CN112453649A - Wire feeding mechanism of robot welding gun - Google Patents
Wire feeding mechanism of robot welding gun Download PDFInfo
- Publication number
- CN112453649A CN112453649A CN202011371206.7A CN202011371206A CN112453649A CN 112453649 A CN112453649 A CN 112453649A CN 202011371206 A CN202011371206 A CN 202011371206A CN 112453649 A CN112453649 A CN 112453649A
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- China
- Prior art keywords
- wire
- welding
- wire feeding
- welding gun
- feeding barrel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Resistance Welding (AREA)
Abstract
本发明公开了一种机器人焊枪送丝机构，包括盛放焊丝盘的送丝桶；所述送丝桶由泄力单元带动绕Z轴转动，以消除焊丝的自身扭力；为保证送丝桶送出的焊丝与焊接工件所用焊丝的速度一致，从送丝桶引出的焊丝经同步单元调整后进入焊枪机器人导杆中。本发明的优点在于将工作时静止不动的送丝桶变成沿Z轴旋转，消除了从焊丝盘上直接引出的焊丝自身所存在的绕径扭力，降低了备件的费用，提高了焊接品质；采用同步单元来调整焊丝的输送速度，保证机器人焊枪工作时对焊丝量的需求和送丝量保持一致，保证了机器人焊接的工作效率和工作质量。
The invention discloses a wire feeding mechanism of a robot welding gun, comprising a wire feeding barrel containing a wire drum; the wire feeding barrel is driven by a force release unit to rotate around a Z axis to eliminate the self torsion force of the welding wire; in order to ensure that the wire feeding barrel is sent out The speed of the welding wire is the same as that of the welding wire used for welding the workpiece. The welding wire drawn from the wire feeding barrel is adjusted by the synchronizing unit and enters the guide rod of the welding gun robot. The advantage of the present invention lies in that the wire feeding barrel which is stationary during operation is turned into rotation along the Z axis, which eliminates the torsion around the diameter of the welding wire itself directly drawn from the welding wire reel, reduces the cost of spare parts, and improves the welding quality. ; The synchronous unit is used to adjust the conveying speed of the welding wire to ensure that the demand for the amount of welding wire and the amount of wire feeding are consistent when the robot welding gun is working, and the work efficiency and work quality of the robot welding are guaranteed.
Description
Technical Field
The invention relates to an automatic welding wire body of a chassis robot in the field of automobile manufacturing, in particular to a wire feeding mechanism of a robot welding gun.
Background
The automatic welding line body of the chassis robot is widely applied to the field of existing automobile manufacturing. Under normal conditions, a welding wire disc is placed in a wire feeding barrel, when the robot welding gun works, welding wires led out from the welding wire disc firstly enter a guide rod of the robot welding gun, and then under the clamping force action of a wire feeding roller, the welding wires are conveyed to a contact tip through a wire feeding hose to weld inner and outer plate workpieces.
When the welding gun works, the wire feeding barrel for placing the wire reel is still, the welding wire can generate certain diameter-winding torsion when being drawn out from the wire feeding barrel, namely the welding wire moves spirally, when being conveyed into the welding gun, the gaps among the welding wire, the guide rod, the wire feeding hose and the contact tip are small, the long-term spiral movement can cause the internal abrasion of a plurality of parts such as the guide rod, the wire feeding hose and the contact tip, and the spare part cost is increased; meanwhile, the welding wire rotates in the welding process due to the spiral torsion of the welding wire, so that the welding seam is unstable, and the welding quality is directly influenced.
Disclosure of Invention
The invention aims to provide a wire feeding mechanism of a robot welding gun, which aims to solve the technical problems of part abrasion and influence on welding quality caused by welding wire torsion in the welding gun.
In order to achieve the purpose, the invention can adopt the following technical scheme:
the invention relates to a wire feeding mechanism of a robot welding gun, which comprises a wire feeding barrel for accommodating a wire reel; the wire feeding barrel is driven by the force releasing unit to rotate around a Z axis so as to eliminate the self torsion of the welding wire; in order to ensure that the speed of the welding wire sent out from the wire feeding barrel is consistent with that of the welding wire used for welding a workpiece, the welding wire led out from the wire feeding barrel enters a welding gun robot guide rod after being adjusted by a synchronization unit.
The force unloading unit comprises a worm driven by a power source to work and a worm wheel meshed with the worm, and the wire feeding barrel is fixed at the upper end of a worm wheel shaft and synchronously rotates along with the worm wheel.
In actual manufacturing, the synchronization unit of the present invention can adopt the following structure: the device comprises a supporting rod which is slidably arranged on a fixing seat in a penetrating mode, a balancing weight is arranged at the bottom of the supporting rod, an upper limit switch and a lower limit switch are respectively arranged on the upper surface and the lower surface of the fixing seat, and pressing pieces are respectively arranged on the supporting rod above and below the fixing seat.
The synchronization unit of the present invention may also adopt the following structure: the welding wire welding device comprises an oil tank for containing oil, wherein a floating ball fixed at the lower end of a supporting rod positioned above the oil tank is arranged in the oil, and the upper end of the supporting rod is provided with a through hole for penetrating a welding wire; and a limiting mechanism for controlling the force release unit is arranged on the supporting rod body between the through hole and the floating ball.
The density of the floating ball is slightly less than that of the oil liquid.
Stop gear is including being close to the fixed scale that bracing piece department set up, and set up last limit switch and the lower limit switch on the fixed scale be provided with on the bracing piece body of rod and press the baffle.
The welding wire feeding device has the advantages that the wire feeding barrel which is still in work is changed into the rotation along the Z axis so as to eliminate the diameter winding torsion of the welding wire directly led out from the wire reel, the welding wire enters the welding gun in a linear motion in work, the abrasion problems of parts such as a guide rod, a wire feeding hose, a conductive nozzle and the like are avoided, and the cost of spare parts is reduced; meanwhile, when the welding wire in linear motion is used for welding an outer plate by the contact tube, the welding seam can be ensured to be uniform, and the welding quality can be improved; in order to avoid working faults caused by the fact that the welding wire amount sent out by the wire feeding barrel is asynchronous with the welding speed (the welding wire is accumulated and wound due to the fact that the wire feeding amount is too large, and the welding robot is stuck due to the fact that the wire feeding amount is too small), the invention adopts the synchronizing unit to adjust the conveying speed of the welding wire, ensures that the requirement on the welding wire amount and the wire feeding amount are consistent when a welding gun of the robot works, and ensures the working efficiency and the working quality of the welding of the robot.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 shows another embodiment of the synchronization unit of fig. 1.
Detailed Description
The present invention will be described in more detail below with reference to the accompanying drawings so as to facilitate understanding for those skilled in the art.
As shown in figure 1, the wire feeding mechanism of the robot welding gun comprises a wire feeding barrel 2 for accommodating a wire reel 1; in order to solve the problem of diameter-winding torsion of the welding wire 101 when the welding wire 101 is led out from the welding wire disc 1, the wire feeding barrel 2 is driven by the force-releasing unit to rotate around a Z axis so as to eliminate the torsion of the welding wire 101; in order to ensure that the welding wire 101 led out from the wire feeding barrel 2 is consistent with the welding speed of the robot welding gun 102 and avoid welding or equipment failure, the welding wire 101 led out from the wire feeding barrel 2 enters the welding gun robot guide rod 103 after being adjusted by the synchronization unit.
When in specific manufacture, the force unloading unit can adopt the following structure: the automatic wire feeding device comprises a worm 4 driven by a power source (a servo motor 3 capable of stepless speed regulation) to work and a worm wheel 5 meshed with the worm 4, wherein a wire feeding barrel 2 is fixed at the upper end part of a worm wheel shaft 6 and synchronously rotates around a Z axis along with the worm wheel 5. Because the angle of the welding wire around the diameter can not be quantized, the linear interpolation control is not easy to be carried out by measuring the offset angle, the wire feeding barrel is rotated around the Z axis (the rotating direction of the wire feeding barrel is opposite to the winding direction of the welding wire placed in the barrel), so that the torsion generated when the welding wire is led out of the wire feeding barrel is eliminated, the welding wire enters the welding gun in a linear motion, the abrasion of the welding wire on the inner walls of the guide rod 103, the wire feeding hose 104 and the contact tip 105 is avoided, the welding wire at the contact tip 105 does not generate spiral motion any more, the welding seam can be ensured to be uniform when a workpiece 106 is welded, and the.
In order to ensure that the speed of the welding wire sent out by the wire feeding barrel 2 is consistent with that of the welding wire for welding of the contact tip 105 and avoid the problem that the normal welding work is influenced by too large or too small wire feeding amount, the invention adopts a synchronization unit for adjustment.
In particular, the synchronization unit may be constructed as shown in fig. 1: the welding wire welding device comprises an oil tank for containing oil liquid 7, wherein a floating ball 9 fixed at the lower end of a support rod 8 positioned above the oil tank is arranged in the oil liquid, and the upper end of the support rod 8 is provided with a through hole for penetrating a welding wire 101; a limiting mechanism for controlling the work of the force releasing unit is arranged on the supporting rod body between the through hole and the floating ball 9. Preferably, the support rod 8 is made of aluminum materials, and the density of the floating ball 9 is slightly smaller than that of the oil liquid.
Specifically, the limiting mechanism comprises a fixed scale 10 arranged close to the supporting rod 8, an upper limiting switch 11 and a lower limiting switch 12 which are arranged on the fixed scale 10, and a pressing baffle 13 is arranged on the rod body of the supporting rod; the upper limit switch 11 is a normally open switch, the lower limit switch 12 is a normally closed switch, and the upper/lower limit switches are connected in series in a control loop of the force releasing unit to control the start and stop of the force releasing unit.
The welding wire sent from the wire feeding barrel 2 passes through the through hole at the upper end of the support rod 8 and then is sequentially introduced into the guide rod 103, the wire feeding hose 104 and the contact nozzle 105, and a workpiece 106 is welded: when the welding wire feeding device works, firstly, the servo motor 3 is started, the wire feeding barrel 2 rotates, welding wires coiled on the wire feeding disk 1 are discharged and then are conveyed out, along with the increase of the output quantity of the welding wires, the floating ball 9 drives the supporting rod 8 and the welding wires to move downwards until the pressing baffle 13 touches the lower limit switch 12, the control cabinet sends a signal to cut off the power of the servo motor 3, at the moment, the length of the welding wires between the wire feeding barrel 2 and the guide rod 103 is set to be L2, along with the continuation of the welding work, the length of the welding wires between the wire feeding barrel 2 and the guide rod 103 is gradually shortened, the welding wires drive the supporting rod 8, the floating ball 9 and the pressing baffle 13 to move upwards until the length of the welding wires between the wire feeding barrel 2 and the guide rod 103 is shortened to be L2, at the moment, the pressing baffle 13 touches the upper limit switch 11, the control cabinet, the welding gun can ensure that the welding wire quantity required by the welding gun is synchronous with the wire feeding quantity provided by the wire feeding barrel in the whole welding process.
If the gravity of bracing piece 8 and floater 9 is too big, can lead to can't drive bracing piece 8 upward movement after the welding wire length shortens, so preferred, bracing piece 8 adopts aluminium material, and the density of floater 9 is lighter than the density of fluid slightly, and the buoyancy of floater 9 can be changed to the height of accessible regulation fluid 7 like this, adjusts the pulling force of bracing piece and floater to the welding wire, makes the welding wire can drive the bracing piece and press baffle 13 up-and-down motion in order to touch upper/lower limit switch.
In order to achieve the speed of the welding wire fed from the wire feeding barrel 2 to be consistent with the speed of the welding wire for welding by the contact tip 105, the structure of the synchronization unit can also adopt the structure shown in 2: the device comprises a supporting rod 12 which is slidably arranged on a fixed seat 11 in a penetrating way, wherein the bottom of the supporting rod 12 is provided with a balancing weight 13, the upper surface and the lower surface of the fixed seat 11 are respectively provided with an upper limit switch 14 and a lower limit switch 15, the supporting rod 12 positioned above and below the fixed seat is respectively provided with a pressing piece, the pressing piece for pressing the upper limit switch 14 can adopt a pressing rod 16, and the pressing piece for pressing the lower limit switch can be replaced by an upper stop block of the balancing weight 13; to improve the accuracy of the welding wire adjustment, a scale may be marked on the support rod 12. By adjusting the number (or weight) of the counter weight blocks 13, the downward pulling force is adjusted, and by adjusting the up-down position of the pressing rod 16, the length L2 of the welding wire between the wire feeding barrel 2 and the guide rod 103 is adjusted.
Claims (6)
1. A robot welding gun wire feeding mechanism comprises a wire feeding barrel for accommodating a wire reel; the method is characterized in that: the wire feeding barrel is driven by the force releasing unit to rotate around a Z axis so as to eliminate the self torsion of the welding wire; the welding wire led out from the wire feeding barrel enters a welding gun robot guide rod after being adjusted by the synchronization unit.
2. The robotic welding gun wire feeder of claim 1, wherein: the force unloading unit comprises a worm driven by a power source to work and a worm wheel meshed with the worm, and the wire feeding barrel is fixed at the upper end of the worm wheel shaft and synchronously rotates along with the worm wheel.
3. The robotic welding gun wire feeder of claim 1, wherein: the synchronous unit comprises a supporting rod which is arranged on the fixing seat in a penetrating mode in a sliding mode, a balancing weight is arranged at the bottom of the supporting rod, an upper limit switch and a lower limit switch are arranged on the upper surface and the lower surface of the fixing seat respectively, and pressing pieces are arranged on the supporting rod above and below the fixing seat respectively.
4. The robotic welding gun wire feeder of claim 1, wherein: the synchronous unit comprises an oil tank for containing oil, a floating ball fixed at the lower end of a support rod positioned above the oil tank is arranged in the oil, and a through hole for penetrating a welding wire is formed in the upper end of the support rod; and a limiting mechanism for controlling the work of the force release unit is arranged on the supporting rod body between the through hole and the floating ball.
5. The robotic welding gun wire feeder of claim 4, wherein: the density of the floating ball is slightly less than that of the oil liquid.
6. The robotic welding gun wire feeder of claim 4, wherein: stop gear is including being close to the fixed scale that bracing piece department set up, and set up last limit switch and the lower limit switch on the fixed scale be provided with on the bracing piece body of rod and press the baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011371206.7A CN112453649A (en) | 2020-11-30 | 2020-11-30 | Wire feeding mechanism of robot welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011371206.7A CN112453649A (en) | 2020-11-30 | 2020-11-30 | Wire feeding mechanism of robot welding gun |
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| Publication Number | Publication Date |
|---|---|
| CN112453649A true CN112453649A (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011371206.7A Pending CN112453649A (en) | 2020-11-30 | 2020-11-30 | Wire feeding mechanism of robot welding gun |
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| Country | Link |
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| CN (1) | CN112453649A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023135632A1 (en) * | 2023-12-18 | 2025-06-18 | Fronius International Gmbh | Container for a consumable wire and method for filling a container for a consumable wire |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05185232A (en) * | 1992-01-14 | 1993-07-27 | Nippon Steel Weld Prod & Eng Co Ltd | Welding wire with pail pack |
| US20070151964A1 (en) * | 2004-01-26 | 2007-07-05 | Josef Artelsmair | Welding wire storage device |
| CN101693321A (en) * | 2009-11-06 | 2010-04-14 | 北京工业大学 | Wire feeding system of double-motor combined welding wire coordinating mechanism |
| CN101786195A (en) * | 2010-03-25 | 2010-07-28 | 杭州凯尔达电焊机有限公司 | Pushing-pulling synchronous wire feeding device and control method |
| JP2014184475A (en) * | 2013-03-25 | 2014-10-02 | Komatsu Ltd | Wire feeding device, method of controlling wire feeding device, and welding system |
| JP2015139786A (en) * | 2014-01-27 | 2015-08-03 | 株式会社ダイヘン | Feeding mechanism, and arc system |
| JP2017094380A (en) * | 2015-11-27 | 2017-06-01 | 株式会社ダイヘン | Arc-welding device |
| JP2018153849A (en) * | 2017-03-17 | 2018-10-04 | ダイハツ工業株式会社 | Welding equipment |
| CN210937599U (en) * | 2019-10-31 | 2020-07-07 | 湖北秦鸿新材料股份有限公司 | Automatic wire feeding mechanism who parks |
| CN213998162U (en) * | 2020-11-30 | 2021-08-20 | 郑州日产汽车有限公司 | Wire feeding mechanism of robot welding gun |
-
2020
- 2020-11-30 CN CN202011371206.7A patent/CN112453649A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05185232A (en) * | 1992-01-14 | 1993-07-27 | Nippon Steel Weld Prod & Eng Co Ltd | Welding wire with pail pack |
| US20070151964A1 (en) * | 2004-01-26 | 2007-07-05 | Josef Artelsmair | Welding wire storage device |
| CN101693321A (en) * | 2009-11-06 | 2010-04-14 | 北京工业大学 | Wire feeding system of double-motor combined welding wire coordinating mechanism |
| CN101786195A (en) * | 2010-03-25 | 2010-07-28 | 杭州凯尔达电焊机有限公司 | Pushing-pulling synchronous wire feeding device and control method |
| JP2014184475A (en) * | 2013-03-25 | 2014-10-02 | Komatsu Ltd | Wire feeding device, method of controlling wire feeding device, and welding system |
| JP2015139786A (en) * | 2014-01-27 | 2015-08-03 | 株式会社ダイヘン | Feeding mechanism, and arc system |
| JP2017094380A (en) * | 2015-11-27 | 2017-06-01 | 株式会社ダイヘン | Arc-welding device |
| JP2018153849A (en) * | 2017-03-17 | 2018-10-04 | ダイハツ工業株式会社 | Welding equipment |
| CN210937599U (en) * | 2019-10-31 | 2020-07-07 | 湖北秦鸿新材料股份有限公司 | Automatic wire feeding mechanism who parks |
| CN213998162U (en) * | 2020-11-30 | 2021-08-20 | 郑州日产汽车有限公司 | Wire feeding mechanism of robot welding gun |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023135632A1 (en) * | 2023-12-18 | 2025-06-18 | Fronius International Gmbh | Container for a consumable wire and method for filling a container for a consumable wire |
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