CN116551122A - Welding wire force adjustment device and adjustment method - Google Patents

Abstract

The present application provides a welding wire force adjustment device and adjustment method, wherein the device includes: a first outer tube, a control assembly and a second outer tube sequentially fixed between the wire drawing motor and the wire pushing motor; the first inner tube Tightly sleeved on the outside of the welding wire, including the first fixed end that is bendably sleeved in the first outer tube and fixedly connected to the wire drawing motor and the first sliding end that can pass through the first outer tube; the second inner tube is tightly sleeved on the The outside of the welding wire includes a second fixed end that is bendably sleeved in the second outer tube and fixedly connected to the wire pushing motor and a second sliding end that can pass through the second outer tube; the first sliding end and the second sliding end As the force of the welding wire changes, the control assembly slides closer or further away; the control assembly is used to control the wire drawing motor to run at a constant first preset speed; and adjust the wire push according to the sliding variation of the first sliding end and the second sliding end The rotation speed of the motor is so that the welding wire is free to be stressed, that is, it is not loose or tight, and there will be no problem of piled wire or wire blocking, and the applicability is better.

Description

Welding wire force adjustment device and adjustment method

technical field

The present application relates to the field of welding technology, and in particular to a welding wire force adjustment device and adjustment method.

Background technique

With the improvement of welding technology level, the requirements for wire feeding stability control also increase. Especially with the rise of the new energy industry, electric vehicles, energy storage, templates and other fields need to introduce a large amount of aluminum welding, and during the aluminum welding process, due to the very soft texture of the aluminum welding wire (such as aluminum-silicon alloy welding wire), the inside of the wire feeding tube The frictional resistance of sliding wire feeding is relatively large, and the wear inside the wire feeding tube will also cause increased resistance, and the rough surface of the welding wire will also cause increased resistance, making it difficult for wire feeding to achieve stable output.

In order to improve the stability of wire output in aluminum welding, a double welding system is introduced. In the double welding system, the wire drawing motor is usually a high-response motor, and the wire-pushing motor is usually a low-response motor. Ideally, the stability of the wire feeding output can be improved. However, in the actual use process, due to the difference in the response speed of the wire drawing motor and the wire pushing motor, the welding wire is usually in a state of stress, and the stable output of the welding wire cannot be achieved. For the aluminum welding process, arc ignition or wire sticking may still occur. The problem of wire blocking.

Therefore, in the aluminum welding process, how to adjust the force of the welding wire so that the welding wire is in a force-free state, thereby ensuring the stable output of the welding wire, has become a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

In order to solve the problem of how to adjust the force of the welding wire in the process of aluminum welding so that the welding wire is in a force-free state, thereby ensuring the stable output of the welding wire, the application provides a welding wire force adjustment device and adjustment method.

In the first aspect, the embodiment of the present application provides a welding wire force adjustment device, which includes: a first outer tube, a second outer tube, a first inner tube, a second inner tube and a control assembly; the first outer tube The tube, the control assembly and the second outer tube are sequentially fixed between the wire drawing motor and the wire pushing motor; the first inner tube is tightly sleeved on the outside of the welding wire, including being bendably sleeved in the first outer tube and fixed Connect the first fixed end of the wire drawing motor with the first sliding end that can pass through the first outer tube; the second inner tube is tightly sleeved on the outside of the welding wire, including bendably sleeved on the In the second outer tube and fixedly connected to the second fixed end of the wire pushing motor and the second sliding end that can pass through the second outer tube; the first sliding end and the second sliding end follow the The force change of the welding wire slides closer or farther away in the control assembly; the control assembly is used to: control the wire drawing motor to run at a constant first preset speed; determine the first sliding end and the second sliding The sliding change amount of the end; adjust the rotating speed of the wire pushing motor based on the sliding change amount, so that the welding wire is free from force.

In a possible implementation manner, the control assembly includes: a third outer tube, a first position sensor, a second position sensor, and a first controller; the third outer tube is fixed to the first outer tube and the Between the second outer tube; the first position sensor is fixed at the end of the first sliding end, and as the force of the welding wire changes, together with the first sliding end, it will be on the third outer Sliding in the tube; the second position sensor is fixed at the end of the second sliding end, and slides in the third outer tube together with the second sliding end as the force of the welding wire changes; The control component is used to determine the amount of sliding change between the first sliding end and the second sliding end, specifically: the first controller performs the following operations: acquire the first position detected by the first position sensor and the second position detected by the second position sensor; determine the actual distance between the first sliding end and the second sliding end based on the first position and the second position; determine the actual The distance difference between the distance and the preset standard distance; the preset standard distance is the distance between the first sliding end and the second sliding end when the welding wire is free under force; it is determined that the distance difference is the Amount of sliding variation.

In a possible implementation manner, the control assembly includes: a fourth outer tube, a first contact tip, a second contact tip, and a second controller; the fourth outer tube is fixed to the first outer tube and the Between the second outer tube; the first contact tip is fixed on the end of the first sliding end, and is in electrical contact with the welding wire, and as the force of the welding wire changes, it is connected to the first sliding end together, slide in the fourth outer tube; the second contact tip is fixed at the end of the second sliding end, and is in electrical contact with the welding wire, and as the force of the welding wire changes, it is in contact with the The second sliding end slides together in the fourth outer tube; the control assembly is used to determine the amount of sliding change between the first sliding end and the second sliding end, specifically: execute the following through the second controller The above operation: acquire the first voltage detected by the first contact tip and the second voltage detected by the second contact tip; determine the first slider and the second voltage based on the first voltage and the second voltage The actual voltage between the second sliding end; determine the voltage difference between the actual voltage and the preset standard voltage; the preset standard voltage is the first sliding end and the first sliding end when the welding wire is free of force The voltage between the two sliding terminals; determine the voltage difference as the sliding variation.

In a possible implementation manner, the control assembly includes: a tension spring, a first pressure sensor, a second pressure sensor and a third controller; the tension spring is fixedly connected to the first sliding end and the Between the second sliding ends; the first pressure sensor is fixed on the end of the first sliding end, and as the force of the welding wire changes, together with the first sliding end, the pulley is stretched or compressed An extension spring; the second pressure sensor is fixed at the end of the second sliding end, and as the force of the welding wire changes, together with the second sliding end, the extension spring is stretched or compressed; The control component is used to determine the sliding variation of the first sliding end and the second sliding end, specifically: the third controller performs the following operations: acquire the first pressure and the first pressure detected by the first pressure sensor the second pressure detected by the second pressure sensor; determine the actual force between the first sliding end and the second sliding end based on the first pressure and the second pressure; determine the actual The force difference between the force and the preset standard force; the preset standard force is the force between the first sliding end and the second sliding end when the welding wire is free of force; determine the The force difference is the sliding variation.

In a possible implementation manner, the device further includes: a first limiting component and a second limiting component fixedly arranged in the control assembly; the first limiting component is arranged on the first sliding end On the sliding path, it is used to limit the farthest position where the first sliding end slides to the side of the wire drawing motor; the second limiting component is arranged on the sliding path of the second sliding end, and is used to limit the The farthest position where the second sliding end slides toward the side of the wire pushing motor.

In the second aspect, the embodiment of the present application also provides a method for adjusting the force of the welding wire, the method is applied to the device for adjusting the force of the welding wire described in the first aspect, and the method includes: controlling the wire drawing motor through the control assembly to running at a constant first preset speed; determining the slip variation of the first sliding end and the second sliding end through the control assembly; adjusting the rotation speed of the wire pushing motor based on the slip variation through the control assembly, so as to Allow the wire to be stress free.

In a possible implementation manner, the control assembly includes: a third outer tube, a first position sensor, a second position sensor, and a first controller; the third outer tube is fixed to the first outer tube and the Between the second outer tube; the first position sensor is fixed at the end of the first sliding end, and as the force of the welding wire changes, together with the first sliding end, it will be on the third outer Sliding in the tube; the second position sensor is fixed at the end of the second sliding end, and slides in the third outer tube together with the second sliding end as the force of the welding wire changes; The determining the sliding variation of the first sliding end and the second sliding end through the control assembly includes: obtaining the first position detected by the first position sensor and the second sliding end through the first controller. the second position detected by the position sensor; the actual distance between the first sliding end and the second sliding end is determined by the first controller based on the first position and the second position; by the The first controller determines the distance difference between the actual distance and the preset standard distance; the preset standard distance is the distance between the first sliding end and the second sliding end when the welding wire is free under force ; Determine the distance difference as the sliding variation by the first controller.

In a possible implementation manner, the control assembly includes: a fourth outer tube, a first contact tip, a second contact tip, and a second controller; the fourth outer tube is fixed to the first outer tube and the Between the second outer tube; the first contact tip is fixed on the end of the first sliding end, and is in electrical contact with the welding wire, and as the force of the welding wire changes, it is connected to the first sliding end together, slide in the fourth outer tube; the second contact tip is fixed at the end of the second sliding end, and is in electrical contact with the welding wire, and as the force of the welding wire changes, it is in contact with the The second sliding ends slide together in the fourth outer tube; the determining the sliding variation of the first sliding end and the second sliding end through the control assembly includes: obtaining the obtained value through the second controller The first voltage detected by the first contact tip and the second voltage detected by the second contact tip; the first slide is determined by the second controller based on the first voltage and the second voltage The actual voltage between the end and the second sliding end; the voltage difference between the actual voltage and the preset standard voltage is determined by the second controller; the preset standard voltage is set when the welding wire is free of force The voltage between the first sliding end and the second sliding end; the voltage difference is determined by the second controller as the sliding change amount.

In a possible implementation manner, the control assembly includes: a tension spring, a first pressure sensor, a second pressure sensor and a third controller; the tension spring is fixedly connected to the first sliding end and the Between the second sliding ends; the first pressure sensor is fixed on the end of the first sliding end, and as the force of the welding wire changes, together with the first sliding end, the pulley is stretched or compressed An extension spring; the second pressure sensor is fixed at the end of the second sliding end, and as the force of the welding wire changes, together with the second sliding end, the extension spring is stretched or compressed; The determination of the sliding variation of the first sliding end and the second sliding end through the control assembly includes: obtaining the first pressure and the second pressure detected by the first pressure sensor through the third controller the second pressure detected by the sensor; the actual force between the first sliding end and the second sliding end is determined by the third controller based on the first pressure and the second pressure; through the The third controller determines the force difference between the actual force and the preset standard force; the preset standard force is the first sliding end and the second sliding end when the welding wire is free of force The force between them; the force difference is determined by the third controller as the sliding variation.

In a possible implementation manner, controlling the wire drawing motor to run at a constant first preset speed through the control component includes: acquiring the actual speed of the wire drawing motor through the control component; Determine the rotational speed difference between the actual rotational speed and the first preset rotational speed; adjust the current rotational speed of the wire drawing motor based on the rotational speed difference through the control component, so that the wire drawing motor can operate at the first preset rotational speed Constantly running.

In the third aspect, the embodiment of the present application also provides a computer device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, and the processor implements the above-mentioned second computer program when executing the computer program. A method for adjusting the force of the welding wire.

In a fourth aspect, the embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the method for adjusting the force of the welding wire in the above-mentioned second aspect.

The embodiment of the present application provides a welding wire force adjustment device and adjustment method. Through the device and the method, the wire drawing motor can be controlled to run at a constant first preset speed to control the stable output of the welding wire. The force change adjusts the speed of the wire pushing motor, so that the welding wire is in a state of free force, that is, neither loose nor tight, and there will be no problem of stacking or blocking wire, which can meet the needs of aluminum welding scenarios and has better applicability.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

Fig. 1 is a schematic structural diagram of a gas metal arc welding system provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of another application scenario provided by the embodiment of the present application.

Fig. 4 is a schematic structural diagram of another gas metal arc welding system provided by an embodiment of the present application.

Fig. 5 is a schematic structural diagram of another gas metal arc welding system provided by an embodiment of the present application.

FIG. 6A is a schematic structural diagram of a welding wire force adjusting device provided in an embodiment of the present application.

FIG. 6B is a schematic diagram of another application scenario provided by the embodiment of the present application.

Fig. 7A is a schematic structural diagram of another welding wire force adjusting device provided in the embodiment of the present application.

FIG. 7B is a schematic diagram of another application scenario provided by the embodiment of the present application.

Fig. 8 is a schematic structural diagram of another welding wire force adjusting device provided in the embodiment of the present application.

Fig. 9 is a schematic structural diagram of another welding wire force adjusting device provided in the embodiment of the present application.

FIG. 10 is a schematic flow chart of a method for adjusting the force of a welding wire provided in an embodiment of the present application.

FIG. 11 is a schematic diagram of another application scenario provided by the embodiment of the present application.

Detailed ways

The present application will be further described in detail through the accompanying drawings and embodiments below. Through these descriptions, the features and advantages of the present application will become clearer and more specific.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features involved in different embodiments of the present application described below may be combined with each other as long as they do not constitute a conflict with each other.

Referring to FIG. 1 , FIG. 1 shows a schematic structural diagram of a gas metal arc welding system. As shown in FIG. 1 , the gas metal arc welding system 100 may include: a power supply part 101 , a wire feeding part 102 , a welding torch part 103 , and a welding wire 104 . Wherein, the power supply part 101 generally satisfies the constant voltage characteristic, and is used to output a constant voltage for the gas metal arc welding system 100 . The wire feeding unit 102 is used to deliver the welding wire 104 to the welding torch unit 103, and the wire feeding unit 102 is usually controlled at a constant speed (or called constant speed, constant or stable), that is, the wire feeding unit 102 usually operates at a certain constant speed , to achieve the effect of stable wire feeding. The welding torch part 103 is used to deliver the welding wire 104 to the base material 105 to weld the base material 105 .

With the improvement of welding technology level, the requirements for wire feeding stability control also increase. Especially with the rise of the new energy industry, electric vehicles, energy storage, formwork and other fields need to introduce a large amount of aluminum welding. In the aluminum welding process, because aluminum is easily oxidized in the air to form alumina, and the melting point of alumina is very high, and the conductivity is poor, so in the aluminum welding process, such as the aluminum welding process of the arc striking process When the welding wire 104 touches the base metal 105, the wire feeding needs to be stopped immediately, so that the end of the welding wire 104 and the base metal 105 fully contact and generate heat to generate an arc 106, thereby improving the success rate of arc striking and reducing the occurrence of arc striking.

It can be seen from FIG. 2 that only when the wire feeding speed is controlled at an ideal speed, it is possible to reduce the speed of the end of the welding wire 104 from high speed to zero immediately when the welding wire 104 touches the base metal 105, thereby stopping the wire feeding. But in the actual application scene, because the welding wire 104 is in a curved running state inside the welding torch part 103, and the length of the welding torch part 103 is usually greater than 3 meters, when the wire feeding part 102 stops feeding the wire, the actual speed of the welding wire 104 end cannot be changed from a high speed to a high speed immediately. Reduced to zero, that is, the end of the welding wire 104 will not stop the output immediately, and it will take a while to stop the output, so that the control of the welding wire output is not ideal, and the arc ignition cannot reach the ideal state.

For another example, in another arc striking process, because aluminum has very good thermal conductivity, and aluminum profiles are prone to defects such as welding cracks after overheating, so heat input needs to be strictly controlled during aluminum welding. In such an application scenario, it is necessary to control the wire feeding unit 102 to switch between high-speed operation and low-speed operation according to a set switching frequency. As shown in Figure 3, when the wire feeding is controlled at an ideal speed, high-speed operation and low-speed operation can be switched immediately. But in the actual application scene, because the welding wire 104 is in the state of curved movement inside the welding torch part 103, and the length of the welding torch part 103 is greater than 3 meters, when the wire feeding part 102 switches from high speed to low speed, or when switching from low speed to high speed, the welding wire 104 The actual speed at the end cannot immediately complete the same switching as that of the wire feeding unit 102, especially, when the switching frequency of the wire feeding unit 102 between high-speed operation and low-speed operation is higher than 10 hertz (Hz), the actual welding state cannot reach the set A certain ideal state leads to unsatisfactory welding wire control, which cannot meet the needs of heat input control, thus failing to achieve a better welding effect.

In order to solve the above problems, in an optional implementation manner, the welding torch part and the wire feeding part are integrated together. For example, referring to FIG. 4 , FIG. 4 shows a schematic structural diagram of another gas metal arc welding system. As shown in FIG. 4 , the MIG arc welding system 400 may include: a power supply unit 401 , a wire reel 402 , a wire feeding tube 403 , a welding wire 404 , a welding torch unit and a wire feeding integrated unit 405 . Wherein, the power supply part 401 is used to output a constant voltage for the gas metal arc welding system 400 . The wire feeding integrated component 405 is used to transport the welding wire 404 from the wire reel 402 along the wire feeding pipe 403 to the base metal 406 , and weld the base metal 406 after generating an arc 407 .

In the MIG arc welding system 400 described above, since the integrated wire feeding component 405 for controlling the wire feeding speed is arranged near the end of the welding wire 404, it is easy to achieve an ideal control effect. However, in this configuration, the structure of the welding torch components is more complicated, and the welding wire reel 402 is far away from the welding torch components, the wire feeding resistance is still relatively large, and the effect of wire feeding control is still unsatisfactory. In order to improve the wire feeding effect, in another optional implementation, the wire feeding path in the wire feeding tube 403 is changed from a sliding friction path to a rolling friction path, which can reduce the wire feeding resistance, but the rolling friction path The price of the wire tube is high, and the wire threading is difficult, especially when the wire feeding distance is long, and the wire feeding control still cannot meet the needs of practical applications.

Therefore, in another alternative embodiment, two wire feeding parts are introduced. Referring to FIG. 5 , FIG. 5 shows a schematic structural diagram of another gas metal arc welding system. As shown in Fig. 5, the MIG arc welding system 500 may include: a wire drawing integrated with a power supply part 501, a welding wire reel 502, a wire pushing part 503, a wire feeding tube 504, a welding wire 505, a welding torch part and a wire drawing part. Component 506, contact tip 507.

Wherein, the power supply part 501 is used for outputting a constant voltage for the gas metal arc welding system 500 . The wire pushing component 503 is used to transport the welding wire 505 from the welding wire reel 502 to the wire drawing assembly component 506 along the wire feeding tube 504 . The wire drawing integrated component 506 is used to output the welding wire 505 from the contact tip 507 to the base material 509 , and after generating the arc 508 , the base material 509 is welded.

In the MIGA welding arc system 500, the wire pushing part 503 is a relatively high-power low-response-speed motor, and the wire-drawing part in the wire-drawing integrated part 506 is a low-power high-response speed motor. The high-speed response characteristics of the 505 end. However, in practical applications, due to the difference in response speed between the wire pushing part 503 and the wire drawing part, the welding wire 505 is under stress, and the stable output of the welding wire 505 cannot be achieved.

In particular, in the above-mentioned arc ignition process of aluminum welding, the wire drawing part responds quickly, and the end of the welding wire stops outputting quickly, but the response speed of the wire pushing part 503 is slow, and the welding wire cannot be stopped quickly, resulting in the inside of the wire feeding tube 504. The welding wire 505 is in a stressed state, and if it continues, it will accumulate at position 1, and wire blocking will occur. For another example, in the above-mentioned arc ignition process that needs to control heat input, when the wire drawing part is switched from low speed operation to high speed operation, the wire drawing part responds quickly, but the response of the wire pushing part 503 is slow, and the welding wire cannot be sent out at high speed in time. As a result, the wire drawing component slips, thereby affecting the arc 508 and possibly damaging the contact tip 507 . Or, when the wire-drawing part is switched from high-speed operation to low-speed operation, the wire-drawing part responds quickly, and the wire-pushing part 503 responds slowly, and the welding wire 505 cannot be sent out in time, causing the welding wire 505 to be in a stressed state in the welding wire tube 504, and then in the position Wire blocking occurred at 1 place.

It can be seen that in the current aluminum welding process, the problem of the force on the welding wire cannot be solved, resulting in the inability to output the welding wire stably, thus failing to meet the actual welding needs, and the welding efficiency is low.

In order to solve the above problems, the embodiments of the present application provide a welding wire force adjustment device and adjustment method. The welding wire force adjusting device and adjusting method can be applied in a welding system. Through this device and this method, it is possible to control the wire-drawing motor (or also called the wire-drawing component) to run at a constant speed at the first preset speed, and to control the stable output of the welding wire. At the same time, it is also possible to adjust the wire-pushing motor (or It can also be called the rotating speed of the wire pushing part), so that the welding wire is in a state of free force, that is, it is not loose or tight, and there will be no problem of stacking or blocking wire, which can meet the needs of aluminum welding scenarios and has better applicability .

In the following, the embodiments provided by the present application will be described in detail in conjunction with the accompanying drawings.

Referring to FIG. 6A , FIG. 6A is a schematic structural diagram of a welding wire force adjusting device provided in an embodiment of the present application. The welding wire force adjusting device can be applied in a welding system. As shown in FIG. 6A , the welding wire force adjusting device 600 may include: a first outer tube 601 , a second outer tube 602 , a first inner tube 603 , a second inner tube 604 and a control assembly 605 .

Wherein, the first outer tube 601 , the control assembly 605 and the second outer tube 602 are sequentially fixed between the wire drawing motor 606 and the wire pushing motor 607 . Optionally, one end of the first outer tube 601 is fixedly connected to the drawing motor 606 , and the other end is fixedly connected to the control assembly 605 . One end of the second outer tube 602 is fixedly connected with the wire pushing motor 607 , and the other end is fixedly connected with the control assembly 605 . That is to say, one end of the control assembly 605 is fixedly connected to the first outer tube 601 , and the other end is fixedly connected to the second outer tube 602 .

The wire pushing motor 607 can be used to pull the welding wire 608 out from the welding wire reel (not shown in the figure) of the welding system, and then convey it to the wire drawing along the second outer tube 602, the control assembly 605, and the first outer tube 601 in sequence. Motor 606. Then, the wire drawing motor 606 can continue to deliver the welding wire 608 to the outside of the welding torch (not shown in the figure) of the welding system for welding.

The first inner tube 603 is tightly sleeved on the outside of the welding wire 608 and can move together with the welding wire 608 . The welding wire 608 does not generate curved movement in the first inner tube 603 . Moreover, when the welding wire 608 moves in a curve, the welding wire 608 can drive the first inner tube 603 to move in a curve together. Optionally, the difference between the outer diameter of the welding wire 608 and the inner diameter of the first inner tube 603 may be 0.5-0.8 mm (millimeter). For example, when the outer diameter of the welding wire 608 is 1.0 mm, the inner diameter of the first inner tube 603 may be 1.5 mm. For another example, when the outer diameter of the welding wire 608 is 1.2 mm, the inner diameter of the first inner tube 603 may be 2.0 mm.

The first inner tube 603 may include a first fixed end 6031 and a first sliding end 6032 . Wherein, the first fixed end 6031 is bendably sheathed in the first outer tube 601 . That is to say, the first fixed end 6031 of the first inner tube 603 can be straightened or bent in the first outer tube 601 . When the welding wire 608 moves in a curve in the first outer tube 601 , the first fixed end 6031 can move in a curve in the first outer tube 601 together with the welding wire 608 . Moreover, the end of the first fixed end 6031 is fixedly connected to the wire drawing motor 606 . The first sliding end 6032 of the first inner tube 603 can pass through the first outer tube 601 and slide in or out in the control assembly 605 . When the first sliding end 6032 slides in or out in the control assembly 605 , there is no curved movement, and it can be considered that the first sliding end 6032 slides in or out in a straight line in the control assembly 605 .

There is a gap between the outer surface of the first inner tube 603 and the inner surface of the first outer tube 601 to ensure that the first inner tube 603 can move in a curved line inside the first outer tube 601 without infinite bending. That is to say, the first outer tube 601 can provide space for the first inner tube 603 to move in a curve, and can also limit the bending degree of the first inner tube 603 . Optionally, the difference between the outer diameter of the first inner tube 603 and the inner diameter of the first outer tube 601 may be 3-5 mm.

The second inner tube 604 is tightly sleeved on the outside of the welding wire 608 and can move together with the welding wire 608 . The welding wire 608 does not generate curved movement in the second inner tube 604 . Moreover, when the welding wire 608 moves in a curved line, the welding wire 608 can drive the second inner tube 604 to move in a curved line together. Optionally, the difference between the outer diameter of the welding wire 608 and the inner diameter of the second inner tube 604 may be 0.5-0.8 mm. For example, when the outer diameter of the welding wire 608 is 1.0 mm, the inner diameter of the second inner tube 604 may be 1.5 mm. For another example, when the outer diameter of the welding wire 608 is 1.2 mm, the inner diameter of the second inner tube 604 may be 2.0 mm.

The second inner tube 604 may include a second fixed end 6041 and a second sliding end 6042 . Wherein, the second fixed end 6041 is bendably sleeved in the second outer tube 602 . That is to say, the second fixed end 6041 of the second inner tube 604 can be straightened or bent in the second outer tube 602 . When the welding wire 608 moves in a curve in the second outer tube 602 , the second fixed end 6041 can move in a curve in the second outer tube 602 together with the welding wire 608 . Moreover, the end of the second fixed end 6041 is fixedly connected to the wire pushing motor 607 . The second sliding end 6042 of the second inner tube 604 can pass through the second outer tube 602 to slide in or out in the control assembly 605 . When the second sliding end 6042 slides in or out in the control assembly 605 , there is no curved movement, and it can be considered that the second sliding end 6042 slides in or out in a straight line in the control assembly 605 .

There is a gap between the outer surface of the second inner tube 604 and the inner surface of the second outer tube 602 to ensure that the second inner tube 604 can move in a curved line inside the second outer tube 602 without being infinitely bent. That is to say, the second outer tube 602 can provide a space for the second inner tube 604 to move in a curve, and can also limit the bending degree of the second inner tube 604 . Optionally, the difference between the outer diameter of the second inner tube 604 and the inner diameter of the second outer tube 602 may be 3-5 mm.

The first sliding end 6032 of the first inner tube 603 and the second sliding end 6042 of the second inner tube 604 slide closer or farther away in the control assembly 605 as the force of the welding wire 608 changes. When the first sliding end 6032 and the second sliding end 6042 slide closer or farther away in the control assembly 605 , there will be no curved movement. It can be considered that the first sliding end 6032 and the second sliding end 6042 are along a straight line in the control assembly 605 Swipe closer or farther away.

Further, when the welding wire 608 is stressed and tightened, the welding wire 608 is straightened, and the first inner tube 603 and the second inner tube 604 are straightened together with the welding wire 608, then the first sliding end 6032 and the second sliding end 6042 Sliding approach. Conversely, when the welding wire 608 is stressed and becomes loose, the welding wire 608 will move in a curve, and the first inner tube 603 and the second inner tube 604 will move in a curve together with the welding wire 608, then the first sliding end 6032 and the second sliding end 6042 will slide way away.

Optionally, the welding wire force adjusting device 600 may also include a first limiting component and a second limiting component fixedly arranged in the control assembly 605 . The first limiting component and the second limiting component are not shown in FIG. 6 , and reference may be made to the content of subsequent embodiments.

Wherein, the first limiting component is arranged on the sliding path of the first sliding end 6032 to limit the farthest position of the first sliding end 6032 sliding toward the side of the wire drawing motor 606 . The furthest position where the first sliding end 6032 slides toward the side of the wire drawing motor 606 is the position where the first limiting component is located.

The second limiting component is arranged on the sliding path of the second sliding end 6042 , and is used to limit the furthest position where the second sliding end 6042 slides toward the side of the wire pushing motor 607 . The farthest position where the second sliding end 6042 slides toward the side of the wire pushing motor 607 is the position where the second limiting component is located.

The control component 605 can be used to control the wire drawing motor 606 to run at a constant speed (or called a constant speed), and adjust the rotation speed of the wire pushing motor 607 according to the force change of the welding wire 608 . Optionally, the control component 605 can be used to: control the wire drawing motor 606 to run at a constant first preset speed; determine the sliding variation of the first sliding end 6032 and the second sliding end 6042; adjust the wire pushing based on the sliding variation The rotating speed of motor 607 is so that welding wire 608 is stressed and free.

Wherein, the first preset rotational speed can be set according to the requirements of actual application scenarios. During specific implementation, the first preset rotational speed is usually the set rotational speed (or called the set speed) of the wire drawing motor. The free force of the welding wire means that the welding wire is neither tight nor loose. It can be considered that in this case, the force of the welding wire is zero. It should be noted that the free force of the welding wire may also be referred to as the balance of the force of the welding wire, which is not limited in this application.

Optionally, the control component 605 controls the wire drawing motor 606 to run at a constant first preset speed, which can be realized in the following manner: the control component 605 acquires the actual speed of the wire drawing motor 606 in real time or periodically; then, the control component 605 determines The rotation speed difference between the actual rotation speed and the first preset rotation speed; then, the control component 605 adjusts the current rotation speed of the wire drawing motor 606 according to the rotation speed difference, so that the wire drawing motor 606 runs at the first preset rotation speed.

If the rotational speed difference is greater than zero, the control assembly 605 reduces the current rotational speed of the wire drawing motor 606 by the rotational speed difference; or, if the rotational speed difference is less than zero, the control assembly 605 increases the current rotational speed of the wire drawing motor 606 by the rotational speed difference or, if the rotational speed difference is equal to zero, the control component 605 controls the drawing motor 606 to run at the current rotational speed.

Optionally, as shown in FIG. 6B , the control component 605 may control the wire drawing motor 606 to run at a first preset rotational speed in a negative feedback manner as shown in FIG. 6B . Wherein, speed feedback refers to feeding back the actual rotational speed of the wire drawing motor 606, and the set speed is the first preset rotational speed. The control component 605 can be based on the actual rotational speed of the wire drawing motor 606 and the set speed through a proportional integral differentiation (PID) controller. Speed, adjusting the current rotation speed of the wire drawing motor 606 so that the wire drawing motor runs at a first preset rotation speed.

Referring to FIG. 7A , FIG. 7A is a schematic structural diagram of another welding wire force adjusting device provided in an embodiment of the present application. The welding wire force adjusting device 700 can be applied in a welding system. As shown in FIG. 7A , the welding wire force adjusting device 700 may include: a first outer tube 701 , a second outer tube 702 , a first inner tube 703 , a second inner tube 704 and a control assembly 705 .

Wherein, the specific structures and functions of the first outer tube 701 , the second outer tube 702 , the first inner tube 703 , the second inner tube 704 and the control assembly 705 can refer to the contents of the foregoing embodiments, and will not be repeated here.

In a possible implementation manner, the control assembly 705 may include: a third outer tube 7051 , a first position sensor 7052 , a second position sensor 7053 , a first controller 7054 and a housing 7055 .

Wherein, the housing 7055 is hollow and has an installation space for fixing the third outer tube 7051 . The third outer tube 7051 is fixed between the first outer tube 701 and the second outer tube 702 . That is to say, one end of the third outer tube 7051 is fixedly connected to the first outer tube 701 , and the other end is fixedly connected to the second outer tube 702 .

The first sliding end 7031 of the first inner tube 703 and the second sliding end 7041 of the second inner tube 704 slide closer or farther away in the third outer tube 7051 as the force of the welding wire 706 changes. When the first sliding end 7031 and the second sliding end 7041 slide closer or farther away in the third outer tube 7051, there will be no curved movement. Swipe closer or farther along a straight line.

Further, when the welding wire 706 is stressed and tightened, the welding wire 706 is straightened, and the first inner tube 703 and the second inner tube 704 are straightened together with the welding wire 706, then the first sliding end 7031 and the second sliding end 7041 In the third outer tube 7051, the distance between the two ends of AB becomes smaller. Conversely, when the welding wire 706 is stressed and becomes loose, the welding wire 706 will move in a curve, and the first inner tube 703 and the second inner tube 704 will move in a curve together with the welding wire 706, then the first sliding end 7031 and the second sliding end 7041 will move in a curved line. The inside of the third outer tube 7051 slides away along a straight line, and the distance between the two ends of AB becomes larger.

Optionally, the difference between the inner diameter of the third outer tube 7051 and the outer diameter of the first inner tube 703 may be 0.5-1 mm. There may also be a difference of 0.5-1 mm between the inner diameter of the third outer tube 7051 and the outer diameter of the second inner tube 704 .

The first position sensor 7052 is fixed at the end of the first sliding end 7031 , and slides in the third outer tube 7051 together with the first sliding end 7031 as the force of the welding wire 706 changes. The first position sensor 7052 can be used to detect the position of the end of the first sliding end 7031 .

The second position sensor 7053 is fixed at the end of the second sliding end 7041 , and slides in the third outer tube 7051 together with the second sliding end 7041 as the force of the welding wire 706 changes. The second position sensor 7053 can be used to detect the position of the end of the second sliding end 7041 .

Optionally, both the first position sensor 7052 and the second position sensor 7053 can be configured as photoelectric sensors or Hall sensors, etc., which are not limited in this application.

Optionally, the control assembly 705 may further include a first limiting component 7056 and a second limiting component 7057 . Wherein, the first limiting component 7056 is used to limit the furthest position where the first sliding end 7031 slides toward the first outer tube 701 side, and the farthest position where the first sliding end 7031 slides toward the first outer tube 701 side is the first The position of a limiting component 7056. The second limiting component 7057 is used to limit the farthest position where the second sliding end 7041 slides to the side of the second outer tube 702, and the farthest position where the second sliding end 7041 slides to the side of the second outer tube 702 is the second limiting position. Where the bit part 7057 resides.

During specific welding, the control component 705 can be used to control the wire drawing motor to run at a constant speed, and adjust the rotation speed of the wire pushing motor according to the force change of the welding wire 706 . Optionally, the control component 705 can be used to: control the wire-drawing motor to run at a constant first preset speed; determine the sliding variation of the first sliding end 7031 and the second sliding end 7041; adjust the wire-pushing motor based on the sliding variation The rotation speed is so that the welding wire 706 is free from stress.

Optionally, the control component 705 can control the drawing motor to run at a first preset rotational speed through the first controller 7054 . For a specific implementation manner, reference may be made to the contents of the foregoing embodiments, and details are not repeated here.

Optionally, the control component 705 determines the amount of sliding change between the first sliding end 7031 and the second sliding end 7041, which may be implemented in the following manner: First, the first controller 7054 obtains the first position detected by the first position sensor 7052. position and the second position detected by the second position sensor 7053; then, the actual distance between the first sliding end 7031 and the second sliding end 7041 is determined based on the first position and the second position by the first controller Distance, that is to determine the distance between the two ends of AB; then, the first controller 7054 determines the distance difference between the actual distance and the preset standard distance; the preset standard distance is the first sliding end 7031 and the first sliding end 7031 when the welding wire 706 is free under force The distance between the second sliding ends 7041; finally, the distance difference is determined by the first controller 7054 as the sliding variation, that is, in this application scenario, the distance between the first sliding end 7031 and the second sliding end 7041 The amount of sliding change is the distance difference.

Optionally, the control component 705 adjusts the rotation speed of the wire-pushing motor based on the amount of slip change, so that the welding wire 706 can be free from force, which can be implemented in the following manner: the first controller 7054 determines based on the amount of slip change The first adjustment speed; determine the speed difference between the actual speed of the wire pushing motor and the second preset speed, and record the speed difference as the second adjustment speed; through the first controller 7054 based on the first adjustment speed and the first adjustment speed 2. Adjust the speed, adjust the speed of the wire pushing motor.

Wherein, the second preset rotational speed can be set according to the requirements of actual application scenarios. During specific implementation, the second preset rotational speed is usually the set rotational speed of the wire pushing motor. The first preset rotation speed and the second preset rotation speed that can ensure that the welding wire is free of force can be preset in advance according to the specific conditions of the equipment in the actual application scene. That is to say, it can be considered that the first preset rotational speed is the set rotational speed of the wire drawing motor when the welding wire is free to be stressed. The second preset rotational speed is the set rotational speed of the wire pushing motor when the welding wire is free to be stressed.

Optionally, as shown in FIG. 7B , the control component 705 can adjust the rotation speed of the wire pushing motor according to the negative feedback method shown in FIG. 7B , so that the welding wire 706 is free from force. Wherein, the speed feedback refers to the feedback of the actual rotational speed of the wire pushing motor, the set speed is the second preset rotational speed, and the force feedback of the welding wire refers to the feedback of the slip variation. The control component 705 can adjust the current speed of the wire pushing motor based on the actual speed, set speed and slip variation of the wire pushing motor through a proportional-integral-differentiation (PID) controller, so that the welding wire is free from force.

Referring to FIG. 8 , FIG. 8 is a schematic structural diagram of another welding wire force adjusting device provided in an embodiment of the present application. The welding wire force adjusting device can be applied in a welding system. As shown in FIG. 8 , the welding wire force adjusting device 800 may include: a first outer tube 801 , a second outer tube 802 , a first inner tube 803 , a second inner tube 804 and a control assembly 805 .

Wherein, the specific structures and functions of the first outer tube 801 , the second outer tube 802 , the first inner tube 803 , the second inner tube 804 and the control assembly 805 can refer to the contents of the foregoing embodiments, and will not be repeated here.

In a possible implementation manner, the control assembly 805 may include: a fourth outer tube 8051 , a first contact tip 8052 , a second contact tip 8053 , a second controller 8054 and a casing 8055 .

Wherein, the housing 8055 is hollow and has an installation space for fixing the fourth outer tube 8051 . The fourth outer tube 8051 is fixed between the first outer tube 801 and the second outer tube 802 . That is to say, one end of the fourth outer tube 8051 is fixedly connected to the first outer tube 801 , and the other end is fixedly connected to the second outer tube 802 .

The first sliding end 8031 of the first inner tube 803 and the second sliding end 8041 of the second inner tube 804 slide closer or farther away in the fourth outer tube 8051 as the force of the welding wire 806 changes. When the first sliding end 8031 and the second sliding end 8041 slide closer or farther away in the fourth outer tube 8051, there will be no curved movement. Swipe closer or farther along a straight line.

Further, when the welding wire 806 is stressed and tightened, the welding wire 806 is straightened, and the first inner tube 803 and the second inner tube 804 are straightened together with the welding wire 806, then the first sliding end 8031 and the second sliding end 8041 In the fourth outer tube 8051, the distance between the two ends of the CD becomes smaller. Conversely, when the force of the welding wire 806 becomes loose, the welding wire 806 will move in a curve, and the first inner tube 803 and the second inner tube 804 will move in a curve together with the welding wire 806, then the first sliding end 8031 and the second sliding end 8041 will In the fourth outer tube 8051, slide away along a straight line, and the distance between the two ends of the CD becomes larger.

Optionally, the difference between the inner diameter of the fourth outer tube 8051 and the outer diameter of the first inner tube 803 may be 0.5-1 mm. There may also be a difference of 0.5-1 mm between the inner diameter of the fourth outer tube 8051 and the outer diameter of the second inner tube 804 .

The first contact tip 8052 is fixed on the end of the first sliding end 8031 and is in electrical contact with the welding wire 806 , and slides in the fourth outer tube 8051 together with the first sliding end 8031 as the force of the welding wire 806 changes. The first conductive tip 8052 is used to detect the voltage corresponding to the welding wire 806 at the end of the first sliding end 8031 .

The second contact tip 8053 is fixed on the end of the second sliding end 8041 and is in electrical contact with the welding wire 806 , and slides in the fourth outer tube 8051 together with the second sliding end 8041 as the force of the welding wire 806 changes. The second conductive tip 8053 is used to detect the voltage corresponding to the welding wire 806 at the end of the second sliding end 8041 .

The welding wire between the first contact tip 8052 and the second contact tip 8053 may be equivalent to a resistance R _W , that is, the welding wire between two ends of CD may be equivalent to a resistance R _W . When the first sliding end 8031 and the second sliding end 8041 slide close to each other along a straight line in the fourth outer tube 8051, the distance between the two ends of CD becomes smaller, and the first contact tip 8052 and the second contact tip 8053 are correspondingly in the fourth outer tube 8051. The tube 8051 slides closer along a straight line. In this application scenario, the resistance value of the resistor R _W becomes smaller, and the current in the welding wire is a constant current, which does not change, and the corresponding voltage difference between the two ends of the CD becomes smaller.

Conversely, when the first sliding end 8031 and the second sliding end 8041 slide away from each other along a straight line in the fourth outer tube 8051, and the distance between the two ends of CD becomes larger, the first contact tip 8052 and the second contact tip 8053 are correspondingly in contact with each other. The inside of the fourth outer tube 8051 slides away along a straight line. In this application scenario, the resistance value of the resistor R _W becomes larger, and the current in the welding wire is a constant current, which does not change, and the corresponding voltage difference between the two ends of CD changes. big.

Optionally, both the first contact tip 8052 and the second contact tip 8053 may be copper alloy contact tips. It should be noted that the first contact tip 8052 and the second contact tip 8053 can also be set as other elements for detecting voltage, current or resistance, which is not limited in this application.

Optionally, the control assembly 805 may further include a first limiting component 8056 and a second limiting component 8057 . Wherein, the first limiting component 8056 is used to limit the furthest position where the first sliding end 8031 slides toward the first outer tube 801 side, and the farthest position where the first sliding end 8031 slides toward the first outer tube 801 side is the first The position of a limiting component 8056. The second limiting part 8057 is used to limit the farthest position where the second sliding end 8041 slides to the second outer tube 802 side, and the farthest position where the second sliding end 8041 slides to the second outer tube 802 side is the second limiting position. Where the bit part 8057 resides.

During specific welding, the control component 805 can be used to control the wire drawing motor to run at a constant speed, and adjust the rotation speed of the wire pushing motor according to the force change of the welding wire 806 . Optionally, the control component 805 can be used to: control the wire-drawing motor to run at a first preset rotational speed; determine the sliding variation of the first sliding end 8031 and the second sliding end 8041; adjust the wire-pushing motor based on the sliding variation The rotation speed is so that the welding wire 806 is free from stress.

Optionally, the control component 805 can control the drawing motor to run at a first preset rotational speed through the second controller 8054 . For a specific implementation manner, reference may be made to the contents of the foregoing embodiments, and details are not repeated here.

Optionally, the control component 805 determines the amount of sliding change between the first sliding end 8031 and the second sliding end 8041, which may be implemented in the following manner: the second controller 8054 obtains the first voltage detected by the first contact tip 8052 and The second voltage detected by the second contact tip 8053; the actual voltage between the first sliding end 8031 and the second sliding end 8041 is determined by the second controller 8054 based on the first voltage and the second voltage, the actual The voltage is the voltage of the actual corresponding welding wire segment between the first sliding end 8031 and the second sliding end 8041; the voltage difference between the actual voltage and the preset standard voltage is determined by the second controller 8054; the preset standard voltage is The voltage of the corresponding welding wire section between the first sliding end 8031 and the second sliding end 8041 when the welding wire is free under force; the voltage difference is determined by the second controller 8054 as the sliding variation, that is, this application In the scenario, the sliding variation of the first sliding end 8031 and the second sliding end 8041 is the voltage difference.

Optionally, the control component 805 adjusts the rotation speed of the wire-pushing motor based on the amount of slip change, so that the welding wire 806 is free from force, which can be implemented in the following manner: the second controller 8054 determines based on the amount of slip change The third adjustment speed; through the second controller 8054 to determine the speed difference between the actual speed of the wire pushing motor and the second preset speed, and record the speed difference as the fourth adjustment speed; through the second controller 8054 based on the The third adjustment speed and the fourth adjustment speed adjust the speed of the wire pushing motor.

Wherein, the second preset rotational speed can be set according to the requirements of actual application scenarios. During specific implementation, the second preset rotational speed is usually the set rotational speed of the wire pushing motor. The first preset rotation speed and the second preset rotation speed that can ensure that the welding wire is free of force can be preset in advance according to the specific conditions of the equipment in the actual application scene. That is to say, it can be considered that the first preset rotational speed is the set rotational speed of the wire drawing motor when the welding wire is free to be stressed. The second preset rotational speed is the set rotational speed of the wire pushing motor when the welding wire is free to be stressed.

Optionally, the control component 805 can also adjust the rotation speed of the wire pushing motor according to the negative feedback method shown in FIG. 7B , so that the welding wire 806 is free from force. For details, reference may be made to the contents of the foregoing embodiments, and details are not repeated here.

Referring to FIG. 9 , FIG. 9 is a schematic structural diagram of another welding wire force adjusting device provided in an embodiment of the present application. The welding wire force adjusting device can be applied in a welding system. As shown in FIG. 9 , the welding wire force adjusting device 900 may include: a first outer tube 901 , a second outer tube 902 , a first inner tube 903 , a second inner tube 904 and a control assembly 905 .

Wherein, the specific structures and functions of the first outer tube 901 , the second outer tube 902 , the first inner tube 903 , the second inner tube 904 and the control assembly 905 can refer to the contents of the foregoing embodiments, and will not be repeated here.

In a possible implementation manner, the control assembly 905 may include: a tension spring 9051 , a first pressure sensor 9052 , a second pressure sensor 9053 , a third controller 9054 and a housing 9055 .

Wherein, the housing 9055 is hollow and has an installation space for installing the tension spring 9051 . The tension spring 9051 is fixedly connected between the first sliding end 9031 of the first inner tube 903 and the second sliding end 9041 of the second inner tube 904 . That is to say, one end of the tension spring 9051 is fixedly connected to the end of the first sliding end 9031 , and the other end is fixedly connected to the end of the second sliding end 9041 .

The first sliding end 9031 and the second sliding end 9041 stretch or compress the tension spring 9051 as the force of the welding wire 906 changes. When the first sliding end 9031 and the second sliding end 9041 stretch or compress the spring, there will be no curved movement. It can be considered that the first sliding end 9031 and the second sliding end 9041 stretch or compress the stretching spring 9051 along a straight line. Moreover, when the extension spring 9051 is stretched or compressed, it will not move in a curved line, but will be stretched or compressed in a straight line.

Furthermore, when the welding wire 906 is stressed and tightened, the welding wire 906 is straightened, and the first inner tube 903 and the second inner tube 904 are straightened together with the welding wire 906, then the first sliding end 9031 and the second sliding end 9041 When the tension spring 9051 is compressed, the force on both ends of EF becomes larger. Conversely, when the force of the welding wire 906 becomes loose, the welding wire 906 will move in a curve, and the first inner tube 903 and the second inner tube 904 will move in a curve together with the welding wire 906, then the first sliding end 9031 and the second sliding end 9041 Stretch the tension spring 9051, the force on both ends of EF becomes smaller.

The first pressure sensor 9052 is fixed at the end of the first sliding end 9031 , and together with the first sliding end 9031 , the extension spring 9051 is stretched or compressed as the force of the welding wire 906 changes. The first pressure sensor 9052 is used to detect the pressure on the end of the first sliding end 9031 .

The second pressure sensor 9053 is fixed at the end of the second sliding end 9041 , and together with the second sliding end 9041 , the extension spring 9051 is stretched or compressed as the force of the welding wire 906 changes. The second pressure sensor 9053 is used to detect the pressure on the end of the second sliding end 9041 .

Optionally, the control assembly 905 may further include a first limiting component 9056 and a second limiting component 9057 . Wherein, the first limiting component 9056 is used to limit the furthest position where the first sliding end 9031 slides toward the first outer tube 901 side, and the farthest position where the first sliding end 9031 slides toward the first outer tube 901 side is the first The position of a limiting component 9056. The second limiting part 9057 is used to limit the farthest position where the second sliding end 9041 slides to the second outer tube 902 side, and the farthest position where the second sliding end 9041 slides to the second outer tube 902 side is the second limiting position. Where the bit part 9057 resides.

During specific welding, the control component 905 can be used to control the wire drawing motor to run at a constant speed, and adjust the rotating speed of the wire pushing motor according to the force change of the welding wire 906 . Optionally, the control component 905 can be used to: control the wire-drawing motor to run at a constant first preset speed; determine the sliding variation of the first sliding end 9031 and the second sliding end 9041; adjust the wire-pushing motor based on the sliding variation The rotating speed is so that the welding wire 906 is free from stress.

Optionally, the control component 905 can control the drawing motor to run at a first preset speed through the third controller 9054 . For a specific implementation manner, reference may be made to the contents of the foregoing embodiments, and details are not repeated here.

Optionally, the control component 905 determines the sliding variation of the first sliding end 9031 and the second sliding end 9041, which may be implemented in the following manner: the first pressure and the first pressure detected by the first pressure sensor 9052 are obtained by the third controller 9054 The second pressure detected by the second pressure sensor 9053; the actual pressure between the first sliding end 9031 and the second sliding end 9041 is determined by the third controller 9054 based on the first pressure and the second pressure Force, that is, the force at both ends of EF; the difference between the actual force and the preset standard force is determined by the third controller 9054; the preset standard force is the force described when the welding wire is free of force The force between the first sliding end 9031 and the second sliding end 9041; the force difference is determined by the third controller 9054 as the sliding variation, that is, in this application scenario, the first sliding end The amount of sliding change between the 9031 and the second sliding end 9041 is the force difference.

Optionally, the control component 905 adjusts the rotating speed of the wire pushing motor based on the sliding variation, so that the welding wire 906 is free from force, which can be implemented in the following manner: the third controller 9054 determines the fifth based on the sliding variation. Adjust the speed; determine the difference between the actual speed of the wire pushing motor and the second preset speed through the third controller 9054, and record the speed difference as the sixth adjusted speed; through the third controller 9054 based on the The fifth adjustment speed and the sixth adjustment speed adjust the speed of the wire pushing motor. For further implementation manners, reference may be made to the content of subsequent method embodiments, which will not be described in detail here.

Wherein, the second preset rotational speed can be set according to the requirements of actual application scenarios. During specific implementation, the second preset rotational speed is usually the set rotational speed of the wire pushing motor. The first preset rotation speed and the second preset rotation speed that can ensure that the welding wire is free of force can be preset in advance according to the specific conditions of the equipment in the actual application scene. That is to say, it can be considered that the first preset rotational speed is the set rotational speed of the wire drawing motor when the welding wire is free to be stressed. The second preset rotational speed is the set rotational speed of the wire pushing motor when the welding wire is free to be stressed.

Optionally, the control component 905 can also adjust the rotation speed of the wire pushing motor according to the negative feedback method shown in FIG. 7B , so that the welding wire 906 is free from force. For details, reference may be made to the contents of the foregoing embodiments, and details are not repeated here.

The welding wire force adjustment device provided in the embodiment of the present application can control the wire drawing motor to run at a constant speed at the first preset speed, and control the stable output of the welding wire. The state of free force, that is, neither loose nor tight, will not cause the problem of piled up or blocked wires, which can meet the needs of aluminum welding scenarios and has better applicability.

It can be understood that the above-mentioned embodiment is only an example, and the above-mentioned embodiment can be deformed during actual implementation. Those skilled in the art can understand that the deformation structure of the above-mentioned embodiment without paying creative work all falls within the scope of protection of the present application. No more details in the example.

Based on the same inventive concept, the embodiment of the present application also provides a welding wire force adjustment method for the above-mentioned welding wire force adjustment device. Since the principle of the problem solved by the welding wire force adjustment method is similar to the aforementioned welding wire force adjustment device, the welding wire The implementation of the force adjustment method can refer to the implementation of the aforementioned welding wire force adjustment device, and the repetition will not be repeated.

Embodiments of the method for adjusting the force of the welding wire provided by the present application will be described below with reference to the accompanying drawings.

Referring to FIG. 10 , FIG. 10 is a schematic flowchart of a method for adjusting the force of a welding wire provided in an embodiment of the present application. This method can be applied to the above-mentioned welding wire force adjusting device. Alternatively, the method can also be used in robots or welding machines. For example, referring to Fig. 11, the wire-drawing motor can be fixedly installed at the end of the robot’s mechanical arm to facilitate welding, and the wire-pushing motor can be fixed on the base or base of the robot, and the control system of the robot can be used as a welding wire stress device The controller of the control assembly will control other force monitoring parts of the assembly, such as the first position sensor and the second position sensor shown in Figure 7, or the first contact tip and the second contact tip shown in Figure 8, etc. , or the first pressure sensor and the second pressure sensor shown in Figure 9, etc., are fixed on the mechanical arm of the robot, the first outer tube is fixedly connected between the wire drawing motor and the force monitoring part, and the second outer tube is fixed It is connected between the wire pushing motor and the force monitoring part. The method can then be implemented by a robot, for example, when a welding operation is performed with a robot.

As shown in Figure 10, the method may include the following steps:

Step S101, controlling the wire drawing motor to run at a first preset rotational speed through the control module.

For the specific implementation manner of step S101, reference may be made to the content of the aforementioned device embodiments, and details are not repeated here.

Step S102, determining the sliding variation of the first sliding end and the second sliding end through the control assembly.

In a possible implementation manner, the control assembly may include: a third outer tube, a first position sensor, a second position sensor, and a first controller; the third outer tube is fixed to the first outer tube and the Between the second outer tubes; the first position sensor is fixed at the end of the first sliding end, and as the force of the welding wire changes, together with the first sliding end, in the third outer tube sliding in the middle; the second position sensor is fixed at the end of the second sliding end, and slides in the third outer tube together with the second sliding end as the force of the welding wire changes.

In such an application scenario, determining the amount of sliding change between the first sliding end and the second sliding end through the control component can be implemented in the following manner:

In the first step, the first controller obtains the first position detected by the first position sensor and the second position detected by the second position sensor.

In the second step, the actual distance between the first sliding end and the second sliding end is determined by the first controller based on the first position and the second position.

In the third step, the distance difference between the actual distance and the preset standard distance is determined by the first controller.

Wherein, the preset standard distance is the distance between the first sliding end and the second sliding end when the welding wire is free under force.

In the fourth step, the distance difference is determined by the first controller as the sliding variation of the first sliding end and the second sliding end.

For specific content, reference may also be made to the content of the aforementioned device embodiments, which will not be repeated here.

In a possible implementation manner, the control assembly may include: a fourth outer tube, a first contact tip, a second contact tip, and a second controller; the fourth outer tube is fixed to the first outer tube and the Between the second outer tubes; the first contact tip is fixed at the end of the first sliding end, and is in electrical contact with the welding wire, and together with the first sliding end as the force of the welding wire changes , sliding in the fourth outer tube; the second contact tip is fixed at the end of the second sliding end, and is in electrical contact with the welding wire, and as the force of the welding wire changes, it is connected with the first The two sliding ends slide together in the fourth outer tube.

In such an application scenario, determining the amount of sliding change between the first sliding end and the second sliding end through the control component can be implemented in the following manner:

In the first step, the second controller obtains the first voltage detected by the first contact tip and the second voltage detected by the second contact tip.

In the second step, the second controller determines the actual voltage between the first wiper and the second wiper based on the first voltage and the second voltage.

In the third step, the voltage difference between the actual voltage and the preset standard voltage is determined by the second controller.

Wherein, the preset standard voltage is the voltage between the first sliding end and the second sliding end when the welding wire is free under force.

In the fourth step, the voltage difference is determined by the second controller as the sliding variation between the first sliding end and the second sliding end.

For specific content, reference may also be made to the content of the aforementioned device embodiments, which will not be repeated here.

In a possible implementation manner, the control assembly may include: an extension spring, a first pressure sensor, a second pressure sensor, and a third controller; the extension spring is fixedly connected to the first sliding end and the first sliding end. Between the two sliding ends; the first pressure sensor is fixed at the end of the first sliding end, and as the force of the welding wire changes, together with the first sliding end, the stretched or compressed A spring: the second pressure sensor is fixed at the end of the second sliding end, and together with the second sliding end, the extension spring is stretched or compressed as the force of the welding wire changes.

In such an application scenario, determining the amount of sliding change between the first sliding end and the second sliding end through the control component can be implemented in the following manner:

In the first step, the third controller acquires the first pressure detected by the first pressure sensor and the second pressure detected by the second pressure sensor.

In the second step, the actual force between the first sliding end and the second sliding end is determined by the third controller based on the first pressure and the second pressure.

In the third step, the force difference between the actual force and the preset standard force is determined by the third controller.

Wherein, the preset standard force is the force between the first sliding end and the second sliding end when the welding wire is under free force.

In the fourth step, the force difference is determined by the third controller as the sliding variation of the first sliding end and the second sliding end.

For specific content, reference may also be made to the content of the aforementioned device embodiments, which will not be repeated here.

Step S103 , adjusting the rotation speed of the wire pushing motor based on the sliding variation through the control assembly, so as to free the welding wire from stress.

For the specific implementation manner of step S103, reference may be made to the contents of the aforementioned device embodiments, and details are not repeated here.

In summary, the welding wire force adjustment device and the welding wire force adjustment method provided in the embodiments of the present application have the following advantages:

Through the welding wire force adjustment device and welding wire force adjustment method provided in the embodiments of the present application, the wire drawing motor can be controlled to run at a constant first preset speed, and the welding wire can be controlled to output stably. At the same time, the wire pushing can also be adjusted according to the force change of the welding wire. The rotation speed of the motor makes the welding wire in a state of free stress, that is, neither loose nor tight, and there will be no problems of piled or blocked wires, which can meet the needs of aluminum welding scenarios and have better applicability.

Although the present application provides the operation steps of the method described in the embodiments or flowcharts, more or less operation steps may be included based on routine or non-inventive efforts. The sequence of steps enumerated in the embodiments is only one of the execution sequences of many steps, and does not represent the only execution sequence. When executed by an actual device or client product, the methods shown in the embodiments or drawings may be executed sequentially or in parallel (for example, in a parallel processor or multi-thread processing environment).

Those skilled in the art should understand that the embodiments of this specification may be provided as methods, devices (systems) or computer program products. Accordingly, the embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Each embodiment in this specification is described in a progressive manner, and the same and similar components in each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment, since it is basically similar to the device embodiment, the description is relatively simple, and for relevant parts, refer to the component description of the device embodiment. In this document, relational terms such as first and second etc. are used only to distinguish one entity or operation from another without necessarily requiring or implying any such relationship between these entities or operations. Actual relationship or sequence. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. The orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must Having a particular orientation, being constructed and operating in a particular orientation, and therefore not to be construed as limiting the application. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to any single aspect, nor to any single embodiment, nor to any combination and/or permutation of these aspects and/or embodiments. Furthermore, each aspect and/or embodiment of the present application may be used alone or in combination with one or more other aspects and/or embodiments thereof.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for the components or all technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. All of them should be covered by the scope of the claims and description of the present application.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "back", "left", "right" etc. indicate orientation or position The relationship is an orientation or positional relationship based on the working state of the application, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the application.

In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

The present application has been described above in conjunction with preferred implementations, but these implementations are only exemplary and serve as illustrations only. On this basis, various replacements and improvements can be made to the present application, all of which fall within the protection scope of the present application.

Claims (10)

1. A welding wire stress adjustment device, characterized in that the device comprises: a first outer tube, a second outer tube, a first inner tube, a second inner tube and a control assembly; The first outer tube, the control assembly and the second outer tube are sequentially fixed between the wire drawing motor and the wire pushing motor; The first inner tube is tightly sleeved on the outside of the welding wire, including a first fixed end that is bendably sleeved in the first outer tube and fixedly connected to the wire drawing motor, and a hole that can pass through the first outer tube. first slider; The second inner tube is tightly sleeved on the outside of the welding wire, including a second fixed end that is bendably sleeved in the second outer tube and fixedly connected to the wire pushing motor and can pass through the second end. the second sliding end of the outer tube; The first sliding end and the second sliding end slide closer or farther away in the control assembly as the force of the welding wire changes; The control unit is used for: controlling the wire drawing motor to run at a first preset speed; determining the sliding variation of the first sliding end and the second sliding end; The rotation speed of the wire pushing motor is adjusted based on the sliding variation, so that the welding wire is free from force. 2. The apparatus of claim 1, wherein the control assembly comprises: a third outer tube, a first position sensor, a second position sensor and a first controller; The third outer tube is fixed between the first outer tube and the second outer tube; The first position sensor is fixed at the end of the first sliding end, and slides in the third outer tube together with the first sliding end as the force of the welding wire changes; The second position sensor is fixed at the end of the second sliding end, and slides in the third outer tube together with the second sliding end as the force of the welding wire changes; The control component is used to determine the sliding variation of the first sliding end and the second sliding end, specifically: the first controller performs the following operations: acquiring a first position detected by the first position sensor and a second position detected by the second position sensor; determining an actual distance between the first slider and the second slider based on the first position and the second position; determining the distance difference between the actual distance and a preset standard distance; the preset standard distance is the distance between the first sliding end and the second sliding end when the welding wire is free under force; The distance difference is determined as the sliding variation. 3. The apparatus of claim 1, wherein the control assembly comprises: The fourth outer tube, the first contact tip, the second contact tip and the second controller; The fourth outer tube is fixed between the first outer tube and the second outer tube; The first contact tip is fixed on the end of the first sliding end, and is in electrical contact with the welding wire. As the force of the welding wire changes, together with the first sliding end, it will be on the fourth outer surface. sliding in the tube; The second contact tip is fixed on the end of the second sliding end, and is in electrical contact with the welding wire. As the force of the welding wire changes, together with the second sliding end, sliding in the tube; The control component is used to determine the sliding variation of the first sliding end and the second sliding end, specifically: the second controller performs the following operations: acquiring a first voltage detected by the first contact tip and a second voltage detected by the second contact tip; determining an actual voltage between the first wiper and the second wiper based on the first voltage and the second voltage; determining the voltage difference between the actual voltage and a preset standard voltage; the preset standard voltage is the voltage between the first sliding end and the second sliding end when the welding wire is free from stress; The voltage difference is determined as the slip variation. 4. The apparatus of claim 1, wherein the control assembly comprises: a tension spring, a first pressure sensor, a second pressure sensor and a third controller; The tension spring is fixedly connected between the first sliding end and the second sliding end; The first pressure sensor is fixed at the end of the first sliding end, and together with the first sliding end, stretches or compresses the extension spring as the force of the welding wire changes; The second pressure sensor is fixed at the end of the second sliding end, and together with the second sliding end, stretches or compresses the tension spring as the force of the welding wire changes; The control component is used to determine the sliding variation of the first sliding end and the second sliding end, specifically: the third controller performs the following operations: acquiring a first pressure detected by the first pressure sensor and a second pressure detected by the second pressure sensor; determining an actual force between the first sliding end and the second sliding end based on the first pressure and the second pressure; determining the force difference between the actual force and the preset standard force; the preset standard force is the force between the first sliding end and the second sliding end when the welding wire is free of force ; The force difference is determined as the sliding variation. 5. The device according to any one of claims 1 to 4, wherein the device further comprises: a first limiting component and a second limiting component fixedly arranged in the control assembly; The first limiting component is arranged on the sliding path of the first sliding end, and is used to limit the furthest position where the first sliding end slides toward the side of the wire drawing motor; The second limiting component is arranged on the sliding path of the second sliding end, and is used for limiting the farthest position where the second sliding end slides toward the side of the wire pushing motor. 6. A method for adjusting the force of a welding wire, wherein the method is applied to the device for adjusting the force of a welding wire according to claim 1, and the method comprises: Controlling the wire drawing motor to run at a first preset rotational speed through the control assembly; determining the sliding variation of the first sliding end and the second sliding end through the control assembly; The rotation speed of the wire-pushing motor is adjusted by the control assembly based on the sliding variation, so that the welding wire is free from force. 7. The method of claim 6, wherein the control component comprises: a third outer tube, a first position sensor, a second position sensor and a first controller; The third outer tube is fixed between the first outer tube and the second outer tube; The first position sensor is fixed at the end of the first sliding end, and slides in the third outer tube together with the first sliding end as the force of the welding wire changes; The second position sensor is fixed at the end of the second sliding end, and slides in the third outer tube together with the second sliding end as the force of the welding wire changes; The determining the sliding variation of the first sliding end and the second sliding end through the control assembly includes: Obtaining the first position detected by the first position sensor and the second position detected by the second position sensor through the first controller; determining, by the first controller, an actual distance between the first slider and the second slider based on the first position and the second position; The distance difference between the actual distance and the preset standard distance is determined by the first controller; the preset standard distance is between the first sliding end and the second sliding end when the welding wire is free under force distance; The distance difference is determined by the first controller as the slip variation. 8. The method of claim 6, wherein the control component comprises: The fourth outer tube, the first contact tip, the second contact tip and the second controller; The fourth outer tube is fixed between the first outer tube and the second outer tube; The first contact tip is fixed on the end of the first sliding end, and is in electrical contact with the welding wire. As the force of the welding wire changes, together with the first sliding end, it will be on the fourth outer surface. sliding in the tube; The second contact tip is fixed on the end of the second sliding end, and is in electrical contact with the welding wire. As the force of the welding wire changes, together with the second sliding end, sliding in the tube; The determining the sliding variation of the first sliding end and the second sliding end through the control assembly includes: Obtaining the first voltage detected by the first contact tip and the second voltage detected by the second contact tip through the second controller; determining, by the second controller, an actual voltage between the first wiper and the second wiper based on the first voltage and the second voltage; The voltage difference between the actual voltage and the preset standard voltage is determined by the second controller; the preset standard voltage is between the first sliding end and the second sliding end when the welding wire is free from stress voltage; The voltage difference is determined by the second controller as the slip variation. 9. The method of claim 6, wherein the control component comprises: a tension spring, a first pressure sensor, a second pressure sensor and a third controller; The tension spring is fixedly connected between the first sliding end and the second sliding end; The first pressure sensor is fixed at the end of the first sliding end, and together with the first sliding end, stretches or compresses the extension spring as the force of the welding wire changes; The second pressure sensor is fixed at the end of the second sliding end, and together with the second sliding end, stretches or compresses the tension spring as the force of the welding wire changes; The determining the sliding variation of the first sliding end and the second sliding end through the control assembly includes: acquiring the first pressure detected by the first pressure sensor and the second pressure detected by the second pressure sensor through the third controller; determining an actual force between the first sliding end and the second sliding end based on the first pressure and the second pressure by the third controller; The force difference between the actual force and the preset standard force is determined by the third controller; the preset standard force is when the welding wire is free of force, the first sliding end and the second The force between the sliding ends; The force difference is determined by the third controller as the slip variation. 10. The method according to claim 6, wherein the controlling the drawing motor to run at a first preset rotational speed through the control component comprises: Obtaining the actual rotational speed of the wire drawing motor through the control assembly; determining a rotational speed difference between the actual rotational speed and the first preset rotational speed through the control component; The current rotation speed of the wire drawing motor is adjusted by the control assembly based on the rotation speed difference, so that the wire drawing motor operates at the first preset rotation speed.