CN113427155B - Multifunctional welding equipment under protective atmosphere - Google Patents

Abstract

The invention discloses a multifunctional welding equipment under a protective atmosphere, comprising a box body, a supporting frame, a heating box, a plasma welding torch, a sliding module, a argon arc welding platform and a control device; the heating box is fixedly installed in the supporting frame; The sliding module is connected to the top of the box, and the plasma welding torch is installed on the sliding module. The control device can control the sliding module to extend the plasma welding torch into/out of the heating box and regulate the welding displacement of the plasma welding torch in the three directions of XYZ; the argon arc welding platform Installed on the support frame; the box covers the heating box and the upper end of the argon arc welding platform, and a protective atmosphere is always maintained in the box. Aiming at the problem of difficult welding of thick plate components, the invention can perform bottom welding of argon arc welding and automatic welding of plasma arc welding, so as to effectively avoid the phenomenon of incomplete penetration of thick plate components. Combining argon arc welding and plasma arc welding in one argon-filled box simplifies the operation steps of priming-automatic welding and does not require the introduction of shielding gas.

Description

A kind of multifunctional welding equipment under protective atmosphere

technical field

The invention belongs to the technical field of welding equipment, and in particular relates to a multifunctional welding equipment under a protective atmosphere.

Background technique

TIG welding is a method of welding in the atmosphere of protective gas argon. Using argon as the shielding gas can effectively prevent the sample from contacting with air during the welding process, thereby preventing the sample from oxidizing and improving the welding quality. TIG welding utilizes a free arc between the electrode and the sample to melt the sample, and then cools and solidifies to achieve welding. TIG welding can be done by hand, which is flexible and convenient.

Plasma arc welding is also a method that requires welding in a shielding gas. It uses high voltage and high frequency oscillation to ionize the gas to form a plasma arc, the plasma arc heats and melts the sample, and the welding is completed after cooling and solidification. Compared with argon arc welding, plasma arc welding has higher energy density, larger aspect ratio, smaller heat-affected zone, and smaller stress deformation.

Both argon arc welding and plasma arc welding can be applied to the welding of thin plates. When welding thicker test pieces, incomplete penetration may occur. At this time, argon arc welding is used for bottom welding, and then plasma arc welding is used for automatic welding of the back side, which can realize the welding of thicker samples. The traditional argon arc welding and plasma arc welding need to be carried out on two independent sets of equipment, and the welding torch needs to be continuously fed with argon gas as a shielding gas during the welding process.

SUMMARY OF THE INVENTION

The invention provides a multifunctional welding equipment under a protective atmosphere, which can concentrate argon arc welding and plasma arc welding on one equipment, and complete the coordinated operation of argon arc welding and plasma arc welding in one welding box. Filled with argon gas as a shielding gas, there is no need to pass additional shielding gas in the welding torch, and the plasma arc welding is equipped with a control device, which can control the movement of the heating box platform and the plasma welding torch, with high welding accuracy and easy operation; and the welding equipment is also Primer-automatic welding of thicker specimens is possible.

Specifically, the present invention provides a multifunctional welding equipment under a protective atmosphere, including a box body, a support frame, a heating box, a plasma welding torch, a sliding module, a argon arc welding platform and a control device;

The heating box is fixedly installed in the support frame, and the heating box is used for placing and heating the sample to be welded;

A sliding module is connected above the heating box, the plasma torch is installed on the sliding module, the control device is electrically connected with the sliding module, and the control device can control the sliding module to turn the The plasma welding torch extends into/out of the heating box and regulates the welding displacement of the plasma welding torch in the three directions of XYZ;

the argon arc welding platform is mounted on the support frame;

The box body covers the heating box and the upper end of the argon arc welding platform, and an argon gas atmosphere is always maintained in the box body, so that the plasma arc welding and the argon arc welding process are always in the argon gas atmosphere.

As a further description of the present invention, the welding equipment further includes a transition bin;

The transition compartment is connected to one side of the box body, and both ends of the transition compartment are provided with sealing cover plates, and the sealing cover plate close to one end of the box body is used for the connection between the box body and the transition compartment. partition/connection between

The transition chamber is connected to a vacuum pump, the vacuum pump is electrically connected to the control device, and the vacuum pump is used for evacuating the transition chamber.

As a further description of the present invention, the transition bins are specifically set as two with different sizes.

As a further description of the present invention, the heating box includes two parts: an upper heat insulation platform and a lower heating chamber, and a heating chamber is formed in the lower heating chamber, and a heating table and a water cooling device are arranged in the heating chamber.

As a further description of the present invention, a welding port is also opened on the upper heat insulating platform, and a heat insulating cover plate is connected to one side of the welding port, and the welding port is used for the plasma torch to extend into/out of the heating room.

As a further description of the present invention, the upper heat insulation platform and the lower heating bin are all composed of the structure of an inner aluminum silicate plate, a middle insulation cotton and an outer metal plate.

As a further description of the present invention, the sliding module includes X-direction sliding rails disposed on both sides of the upper end of the support frame, the upper heat insulation platform is slidably fitted on the X-direction sliding rails, and the upper heat insulation platform is slidably fitted on the X-direction sliding rails. The platform can move out of the lower heating chamber along the X-axis direction, or move a small distance along the X-axis direction during the welding process.

As a further description of the present invention, the sliding module further includes a YZ-direction sliding module fixed on the upper heat-insulating platform, the plasma torch is mounted on the YZ-direction sliding module, and the YZ-direction slides The module is used to control the movement of the plasma torch in the Y-axis direction and the Z-axis direction.

As a further description of the present invention, an observation window and a glove port are provided on the side of the box body, and the observation window and the glove port are arranged above the two stations of plasma arc welding and argon arc welding.

As a further description of the present invention, a fixture is also provided on the argon arc welding platform.

Compared with the prior art, the present invention has the following beneficial technical effects:

Aiming at the problem of difficult welding of thick plate components, the invention can perform bottom welding of argon arc welding and automatic welding of plasma arc welding, which can effectively avoid the phenomenon of incomplete penetration of thick plate components. The argon arc welding and plasma arc welding are concentrated in an argon-filled box, which simplifies the operation steps of priming-automatic welding, and does not require the introduction of shielding gas, which simplifies the welding torch.

Description of drawings

1 is a schematic structural diagram of a multifunctional welding device under a protective atmosphere provided by the present invention;

FIG. 2 is a schematic structural diagram of the welding device in the box of the multifunctional welding equipment provided by the present invention.

Description of reference numbers:

1. Box body; 2. Observation window; 3. Glove port; 4. Control device; 5. Transition chamber; 6. Sealing cover plate; 7. Supporting frame; 8. X-direction sliding track; 9. Upper thermal insulation platform; 10. Lower heating bin; 11. Thermal insulation cover; 12. YZ-direction sliding module; 13. Plasma welding torch; 14. TIG welding platform; 15. Fixture; 16. Heating box.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in use, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The technical solutions of the present invention will be explained below with reference to specific embodiments.

As shown in Figures 1-2, a multifunctional welding equipment under a protective atmosphere is provided, including a box body 1, a support frame 7, a heating box 16, a plasma welding torch 13, a sliding module, a argon arc welding platform 14 and a control device 4 ;

The heating box 16 is fixedly installed in the support frame 7, and the heating box 16 is used for placing and heating the sample to be welded;

A sliding module is connected above the heating box 16, the plasma torch 13 is mounted on the sliding module, the control device 4 is electrically connected with the sliding module, and the control device 4 can control the sliding module The group extends the plasma welding torch 13 into/out of the heating box 16 and regulates the welding displacement of the plasma welding torch 13 in the three directions of XYZ; the argon arc welding platform 14 is installed on the support frame 7;

The box body 1 covers the heating box 16 and the upper end of the argon arc welding platform 14. The box body 1 always maintains an argon gas atmosphere, so that the plasma arc welding and the argon arc welding process are always in the argon gas atmosphere, So as to meet the requirements of argon arc welding and plasma arc welding for shielding gas.

The argon arc welding platform 4 is also provided with a clamp 15 for fixing the sample to be welded. In the argon arc welding process, the sample to be welded is first fixed on the fixture 15, and then the argon arc welding torch is manually operated for welding.

Since the argon gas atmosphere is always maintained in the box body 1, the sample is under the protection of argon gas during the welding process and will not be oxidized. Since the sample is always under the protection of argon gas, there is no need to connect the gas pipe in the welding torch to pass the shielding gas, which simplifies the equipment. However, during plasma arc welding, argon gas still needs to be introduced into the plasma welding torch 13 as an ion gas to generate a plasma arc.

When welding thick plate components, such as single-side groove butt welding of thick plates, the bottom welding of the back of the interface can be performed on the argon arc welding platform 14 first, and then the sample is transferred in the box 1 to the heating box 16. inside, and choose whether to heat according to actual needs, and then control the plasma welding torch 13 to perform automatic plasma arc welding, so that the bottoming-automatic welding of thick plate components can be cooperatively completed in the box 1 .

In an achievable manner, the welding equipment further includes a transition bin 5; the transition bin 5 is connected to one side of the box body 1, and both ends of the transition bin 5 are provided with sealing cover plates 6, close to the The sealing cover 6 at one end of the box body 1 is used for the isolation/communication between the box body 1 and the transition chamber 5; the transition chamber 5 is connected to a vacuum pump, and the vacuum pump is electrically connected to the control In the device 4 , the vacuum pump is used to evacuate the transition chamber 5 .

The transition chamber 5 is used to put the sample into the box 1 or take it out from the box 1. Before placing the sample, it is necessary to seal the sealing cover plates 6 on both sides, and vacuumize the transition chamber 5. Make sure that the transition chamber 5 is in a vacuum state, then open the sealing cover 6 on the side away from the box 1, put the sample into the transition chamber 5, immediately close the sealing cover 6 on this side, vacuum again, and finally approach the box 1 The sealing cover 6 on one side enables the staff to take out the sample from the transition chamber 5 to the box body 1 for subsequent welding operations; the setting of the above-mentioned transition chamber 5 can effectively prevent the sample from being taken in and taken out. It will affect the protective atmosphere in the box 1.

Preferably, the transition bins 5 are specifically set as two of different sizes, so as to meet the requirements of taking and placing samples of different sizes.

In addition, the control device 4 is also equipped with a display, so that it can not only control components such as the vacuum pump, the plasma torch 13 , and the sliding module, but also display the atmosphere of the box 1 and the transition chamber 5 .

Specifically, the heating box 6 includes an upper heat insulation platform 9 and a lower heating chamber 10. The lower heating chamber 10 constitutes a heating chamber, and a heating table and a water cooling device are arranged in the heating chamber to meet the needs of heating during the welding process. and cooling needs. The heating box 6 can heat the entire sample to be welded to a higher temperature suitable for deformation, and maintain heat preservation, so as to avoid cracks in the brittle sample due to excessive stress during the welding process and the cooling process.

Further, in order to prevent heat loss, the upper heat insulation platform 9 and the lower heating bin 10 are all composed of the structure of the inner aluminum silicate plate, the middle insulation cotton and the outer metal plate.

In an achievable manner, the sliding module includes X-direction sliding rails 8 disposed on both sides of the upper end of the support frame 7 , and the upper heat insulation platform 9 is slidably fitted on the X-direction sliding rails 8 , the upper heat insulation platform 9 can move out of the lower heating chamber 10 along the X-axis direction, or move a small distance along the X-axis direction during the welding process.

The sliding module further includes a YZ-direction sliding module 12 fixed on the upper heat insulation platform 9, the plasma torch 13 is mounted on the YZ-direction sliding module 12, and the YZ-direction sliding module 12 It is used to control the movement of the plasma torch 13 in the Y-axis direction and the Z-axis direction.

The above-mentioned upper heat-insulating platform 9 can be moved out of the lower platform 10 of the heating box along the X-axis direction to expose the heating chamber, so as to meet the needs of clamping samples. In addition, the upper heat insulation platform 9 can also move a small distance along the X-axis direction during the welding process to meet the needs of welding; since the heat insulation enclosure around the lower heating bin 10 is relatively thick, during the small distance movement process No voids are created to cause heat loss. The sliding module 12 can control the movement of the plasma torch 13 in the Y-axis direction and the Z-axis direction.

Furthermore, the upper heat insulation platform 9 is also provided with a welding port, one side of the welding port is connected with a heat insulating cover plate 11, and the welding port is used for the plasma torch 13 to extend into/out of the welding port. heating room.

During the heating process of the heating box 16 , the heat insulating cover 11 is closed, and the plasma torch 13 is located outside the heating box 16 at this time. After heating to a certain temperature, open the heat insulation cover 11, start the sliding module 12 to extend the plasma welding torch 13 into the heating chamber for welding, and the plasma welding torch 13 can be displaced in a small range in the Y-axis direction through the sliding module 12. Adjustment, after the welding is completed, remove the plasma torch 13, close the heat insulation cover 11, and continue the heat preservation or slow cooling operation.

The side of the box body 1 is provided with an observation window 2 and a glove port 3, and the observation window 2 and the glove port 3 are arranged at the upper positions of the two stations of plasma arc welding and argon arc welding; the observation window 2 is used for The operator observes the internal conditions in real time when operating the equipment. The glove port 3 is connected to the glove, and the operator can perform operations such as clamping samples and manual argon arc welding in the box 1 through the glove port 3.

The multifunctional welding equipment provided by the invention can solve the problem of difficult welding of thick plate components, and can perform bottom welding of argon arc welding and automatic welding of plasma arc welding, which can effectively avoid the phenomenon of incomplete penetration of thick plate components. In addition, the argon arc welding and the plasma arc welding are concentrated in an argon-filled box, which simplifies the operation steps of priming-automatic welding, and does not need to introduce protective gas, which simplifies the welding torch.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims (7)

1. A multifunctional welding device under a protective atmosphere, characterized in that it comprises a box body (1), a support frame (7), a heating box (16), a plasma welding torch (13), a sliding module, and a argon arc welding platform (14) and control device (4); The heating box (16) is fixedly installed in the support frame (7), and the heating box (16) includes an upper heat insulation platform (9) and a lower heating chamber (10), the lower heating chamber (10). 10) A heating chamber is formed in the heating chamber, a heating table and a water cooling device are arranged in the heating chamber, and the heating box (16) is used for placing and heating the samples to be welded; A sliding module is connected above the heating box (16), the sliding module includes X-direction sliding rails (8) arranged on both sides of the upper end of the support frame (7), and the upper heat insulation platform (9) slides Fitted on the X-direction sliding track (8), the upper heat insulation platform (9) can move out of the lower heating chamber (10) along the X-axis direction, or perform small steps along the X-axis direction during the welding process. distance movement; The sliding module further comprises a YZ-direction sliding module (12) fixed on the upper heat insulation platform (9), and the plasma torch (13) is mounted on the YZ-direction sliding module (12), The YZ-direction sliding module (12) is used to control the movement of the plasma torch (13) in the Y-axis direction and the Z-axis direction The plasma torch (13) is mounted on the sliding module, the control device (4) is electrically connected to the sliding module, and the control device (4) can control the sliding module to transfer the plasma to the sliding module. The welding torch (13) extends into/out of the heating box (16) and regulates the welding displacement of the plasma welding torch (13) in three directions of XYZ; The argon arc welding platform (14) is mounted on the support frame (7); The box body (1) is covered on the heating box (16) and the upper end of the argon arc welding platform (14), and an argon gas atmosphere is always maintained in the box body (1) to enable plasma arc welding and argon arc welding The process is always in an argon atmosphere. 2. The multifunctional welding device under a protective atmosphere according to claim 1, wherein the welding device further comprises a transition bin (5); The transition compartment (5) is connected to one side of the box body (1), and both ends of the transition compartment (5) are provided with sealing cover plates (6). The sealing cover plate (6) is used for the partition/communication between the box body (1) and the transition bin (5); The transition chamber (5) is connected to a vacuum pump, the vacuum pump is electrically connected to the control device (4), and the vacuum pump is used to evacuate the transition chamber (5). 3 . The multifunctional welding equipment under protective atmosphere according to claim 2 , wherein the transition bins ( 5 ) are specifically set as two of different sizes. 4 . 4 . The multifunctional welding equipment under a protective atmosphere according to claim 1 , wherein the upper heat insulation platform ( 9 ) is further provided with a welding port, and one side of the welding port is connected with a heat insulating cover plate. 5 . (11), the welding port is used for the plasma torch (13) to extend into/out of the heating chamber. 5 . The multifunctional welding equipment under protective atmosphere according to claim 1 , wherein the upper heat insulation platform ( 9 ) and the lower heating chamber ( 10 ) are surrounded by an inner aluminum silicate plate, an intermediate space Structural composition of thermal cotton and outer metal plate. 6 . The multifunctional welding equipment under protective atmosphere according to claim 1 , characterized in that: an observation window ( 2 ) and a glove port ( 3 ) are arranged on the side of the box body ( 1 ), and are located in the plasma arc welding and argon The observation window (2) and the glove port (3) are arranged at the upper positions of the two arc welding stations. 7 . The multifunctional welding equipment under protective atmosphere according to claim 1 , wherein a clamp ( 15 ) is further provided on the argon arc welding platform ( 14 ). 8 .

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