A welding device for an automobile stamping

Abstract

The application discloses a welding device for automobile stamping parts and particularly relates to the technical field of automobile stamping part welding, which comprises a mounting seat, a rotating mechanism fixedly installed at the bottom end of the mounting seat, an argon arc welding head arranged at the bottom of the rotating mechanism, a tungsten needle head detachably installed at the bottom of the argon arc welding head, a grinding piece fixedly installed at the top of the rotating mechanism and corresponding to the tungsten needle head, a feeding mechanism fixedly installed at one side of the rotating mechanism, and welding wire used in cooperation with the argon arc welding head arranged in the feeding mechanism. The rotating mechanism comprises a rotating cross frame fixedly installed at the bottom end of the mounting seat. Through the rotating mechanism and the feeding mechanism used in cooperation, automatic feeding of the welding wire is realized, the argon arc welding head can automatically swing at a small angle, the automobile stamping part is subjected to forward swing type argon arc welding, and thus a wave pattern welding seam is formed on the automobile stamping part, and the welding effect of the automobile stamping part is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive stamping welding technology, specifically to a welding device for automotive stamping parts. Background Technology

[0002] The automobile body is mainly composed of the body, closures, interior and exterior trim, and body components. The body is mostly made of stamped parts, which are connected by welding, directly affecting the overall performance and safety of the automobile. Common welding methods for automobile stamped parts include spot welding, arc welding, laser welding, and friction welding. Among them, arc welding uses an electric arc to heat the metal parts, such as gas shielded arc welding and tungsten inert gas welding. Tungsten inert gas welding is the most commonly used method for welding automobile stamped parts. It uses a non-melting tungsten electrode to generate an arc, which heats the materials being welded. At the same time, an inert gas (such as argon) is used to protect the weld area to prevent oxidation and contamination, resulting in good mechanical properties and corrosion resistance.

[0003] However, when traditional automotive stamping parts are welded using argon arc welding, the welding is mostly done manually by holding the argon arc welding head and filler strip. Manual welding can lead to quality problems and pose certain safety hazards to operators, affecting the overall welding efficiency and quality of automotive stamping parts. To address these issues, we propose a welding device for automotive stamping parts. Summary of the Invention

[0004] The purpose of this invention is to provide a welding apparatus for automotive stamping parts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding device for automotive stamping parts, comprising a mounting base, a rotating mechanism fixedly mounted at the bottom end of the mounting base, an argon arc welding head at the bottom of the rotating mechanism, a tungsten electrode needle detachably mounted at the bottom of the argon arc welding head, a grinding component corresponding to the tungsten electrode needle fixedly mounted at the top of the rotating mechanism, and a feeding mechanism fixedly mounted on one side of the rotating mechanism, wherein a welding wire for use with the argon arc welding head is provided in the feeding mechanism;

[0006] The rotating mechanism includes a rotating crossbeam, which is fixedly installed at the bottom of the mounting base. A rotating longitudinal frame is vertically installed at the bottom of the rotating crossbeam. A rotating bearing is fixedly clamped at the bottom of the rotating longitudinal frame, and the handle of the argon arc welding head is fixedly clamped to the middle of the rotating bearing.

[0007] Preferably, the rotating mechanism further includes a first worm gear, which is fixedly engaged with the handle of the argon arc welding head. A first worm is meshed with the outer side of the first worm gear, and a first rotating seat is rotatably mounted on the outer side of the first worm. The first rotating seat is fixedly mounted on the outer side of the rotating frame, and a first motor is fixedly mounted on the side of the rotating frame near the first worm. The drive end of the first motor and the top end of the first worm are fixedly mounted.

[0008] Preferably, the grinding component includes a lifting cylinder, with two symmetrically distributed lifting cylinders. The lifting cylinders are fixedly installed at the bottom center of the rotating crossbeam. The driving end of the lifting cylinder is fixedly installed with the grinding crossbeam. A rotating cylinder is rotatably installed in the middle of the grinding crossbeam. A connector is integrally formed at the top center of the rotating cylinder. An installation groove is opened at the bottom center of the rotating cylinder. A suction cavity is opened in the rotating cylinder. The suction cavity and the connector are interconnected. A grinding frame is fixedly clamped in the connector. A grinding groove corresponding to the tungsten electrode needle is opened at the bottom center of the grinding frame.

[0009] Preferably, a driven gear ring is fixedly sleeved on the middle of the outer side of the rotating cylinder, a second motor is fixedly installed on the top of the grinding crossbeam, a drive shaft is fixedly installed on the drive end of the second motor, the bottom end of the drive shaft extends out of the bottom end of the grinding crossbeam and a drive gear is fixedly installed thereon, and the drive gear and the driven gear ring are meshed together.

[0010] Preferably, the outer side of the grinding frame is provided with a plurality of dust collection grooves arranged in a ring array, the inner wall of the mounting groove is provided with a plurality of dust collection perforations corresponding to the dust collection grooves, a sealing rotating component is fixedly clamped in the middle of the connector, and a connecting pipe is fixedly installed in the middle of the sealing rotating component.

[0011] Preferably, the feeding mechanism includes a connecting longitudinal frame, the feeding mechanism is vertically installed on the side of the bottom of the rotating cross frame away from the rotating longitudinal frame, the bottom of the connecting longitudinal frame is movably fitted with a rotating sleeve, the bottom of the connecting longitudinal frame is fixedly installed with a rotating shaft, the rotating shaft is rotatably engaged with the middle of the rotating sleeve, the outer side of the rotating sleeve is fixedly installed with a fixing sleeve, the middle of the fixing sleeve is fixedly fitted with a support tube, the support tube is inclined, and the bottom of the support tube is fixedly fitted with a fixed conveying component.

[0012] Preferably, the fixed conveying component includes a positioning ring frame, which is fixedly snapped into the bottom of the support tube. The positioning ring frame is a hollow structure, and multiple positioning slide frames arranged in a circular array are slidably snapped into the inner side of the positioning ring frame. Each of the opposite ends of the multiple positioning slide frames is movably snapped into a conveying wheel. A drive ring disk that cooperates with the multiple positioning slide frames is rotatably snapped into the center of the inner cavity of the positioning ring frame. The lower surface of the drive ring disk is provided with a planar threaded protrusion, and the upper surface of the multiple positioning slide frames is provided with a planar threaded groove that cooperates with the planar threaded protrusion. The planar threaded protrusion is movably snapped into the planar threaded groove. The welding wire movably passes through the support tube and the positioning ring frame, and the outer wall of the welding wire contacts the multiple conveying wheels.

[0013] Preferably, a fourth motor is fixedly installed in one of the positioning slide frames, and a pulley transmission assembly is fixedly installed between the drive end of the fourth motor and the shaft end of the corresponding input wheel. The pulley transmission assembly includes two pulleys and a transmission belt movably sleeved on the outside of the two pulleys. The two pulleys are respectively fixedly installed on the drive end of the corresponding fourth motor and the shaft end of the corresponding input wheel.

[0014] Preferably, a drive ring frame is fixedly installed on the middle of the upper surface of the drive ring disk, a third worm gear is fixedly installed on the outer side of the drive ring frame, a third worm is meshed with the outer side of the third worm gear, and auxiliary seats are rotatably installed at both ends of the third worm. The auxiliary seats are fixedly snapped into the inner cavity of the positioning ring frame, and one end of the third worm extends out of the outer side of the positioning ring frame.

[0015] Preferably, a second worm gear is fixedly installed at one end of the rotating shaft, a second worm is meshed with the outer side of the second worm gear, a second rotating seat is rotatably installed on the outer side of the second worm, the second rotating seat is fixedly installed on the outer side of the rotating sleeve, a third motor is fixedly installed on the outer wall of the rotating sleeve near the second worm, and the drive end of the third motor is fixedly installed at one end of the second worm.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By setting up a rotating mechanism and using a feeding mechanism, the welding wire is automatically fed, and the argon arc welding head can automatically swing at a small angle to perform forward swing argon arc welding on automotive stamping parts, thereby forming a wavy weld on the automotive stamping parts and improving the welding effect of automotive stamping parts.

[0018] 2. By setting up grinding components and using a rotating mechanism, the grinding frame is controlled to automatically grind the tungsten electrode tip, thereby improving the subsequent use effect of the tungsten electrode tip.

[0019] 3. By setting up grinding components, when the tungsten electrode needle is automatically ground, the dust pump is simultaneously turned on. The waste generated by automatic grinding is sucked into the suction chamber through multiple dust collection slots and multiple sets of dust collection holes, and then sucked into the dust pump through the connecting pipe for automatic collection of waste, preventing waste from affecting the environment.

[0020] 4. By setting up a feeding mechanism, the angles of the support tube and the fixed conveyor can be flexibly adjusted, thereby flexibly adjusting the angle of the welding wire feed and improving the flexibility of the entire welding device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a schematic diagram showing the structural connection between the rotating mechanism and the argon arc welding head in this invention.

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 This is a schematic diagram of the structure of the grinding part in this invention.

[0026] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle.

[0027] Figure 6 This is a schematic diagram showing the structural connection between the rotating cylinder and the grinding frame in this invention.

[0028] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle.

[0029] Figure 8 This is a schematic diagram showing the structural connection between the feeding mechanism and the welding wire in this invention.

[0030] Figure 9 For the present invention Figure 8 Enlarged view of point D in the middle.

[0031] Figure 10 For the present invention Figure 9 Enlarged view of point E in the middle.

[0032] Figure 11This is a schematic diagram of the structural connection of the fixed conveyor in this invention.

[0033] Figure 12 For the present invention Figure 11 Enlarged view of point F in the middle.

[0034] Figure 13 This is a schematic diagram showing the structural connection between the positioning slide frame and the drive ring disk in this invention.

[0035] In the diagram: 1. Mounting base; 2. Rotating mechanism; 3. Argon arc welding head; 31. Tungsten electrode needle; 4. Grinding part; 5. Feeding mechanism; 6. Welding wire; 21. Rotating crossbeam; 22. Rotating longitudinal frame; 23. Rotating bearing; 24. First worm gear; 25. First worm; 251. First rotating seat; 26. First motor; 41. Lifting cylinder; 42. Grinding crossbeam; 43. Rotating cylinder; 431. Connector; 401. Mounting slot; 402. Dust suction perforation; 44. Grinding frame; 441. Grinding groove; 442. Dust suction groove; 45. Driven gear ring; 451. Second motor; 452. Drive shaft; 453. Drive gear; 46. Sealing rotating component; 461. Connecting pipe; 51. Connecting longitudinal frame; 511. Rotating shaft; 512. Second worm gear; 513. Second worm; 514. Second rotating seat; 515. Third motor; 52. Rotating sleeve; 521. Fixed sleeve; 53. Support pipe; 54. Fixed conveyor component; 541. Positioning ring frame; 542. Positioning slide frame; 543. Conveyor wheel; 5431. Belt pulley transmission assembly; 5432. Fourth motor; 544. Drive ring disc; 545. Drive ring frame; 546. Third worm gear; 547. Third worm; 5471. Auxiliary seat. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example: Figure 1-13 As shown, the present invention provides a welding device for automotive stamping parts, including a mounting base 1, a rotating mechanism 2 fixedly mounted at the bottom end of the mounting base 1, an argon arc welding head 3 provided at the bottom of the rotating mechanism 2, a tungsten electrode needle 31 detachably mounted at the bottom of the argon arc welding head 3, a grinding part 4 corresponding to the tungsten electrode needle 31 fixedly mounted at the top of the rotating mechanism 2, and a feeding mechanism 5 fixedly mounted on one side of the rotating mechanism 2, wherein a welding wire 6 is provided in the feeding mechanism 5 for use in conjunction with the argon arc welding head 3;

[0038] The rotating mechanism 2 includes a rotating crossbeam 21, which is fixedly installed at the bottom of the mounting base 1. A rotating longitudinal frame 22 is vertically installed at the bottom of the rotating crossbeam 21. A rotating bearing 23 is fixedly mounted at the bottom of the rotating longitudinal frame 22. The handle of the argon arc welding head 3 is fixedly engaged in the middle of the rotating bearing 23. By setting the rotating bearing 23, the handle of the argon arc welding head 3 is fixedly engaged in the middle of the rotating bearing 23, which facilitates the argon arc welding head 3 to swing at a small angle at the bottom of the rotating longitudinal frame 22. This facilitates the subsequent automatic small-angle swing of the argon arc welding head 3 to perform forward swing-type argon arc welding on the automotive stamping parts, thereby forming a wavy weld on the automotive stamping parts, improving the welding effect of the automotive stamping parts, and facilitating the argon arc welding head 3 to rotate 180 degrees at the bottom of the rotating longitudinal frame 22.

[0039] The rotating mechanism 2 further includes a first worm gear 24, which is fixedly engaged with the handle of the argon arc welding head 3. A first worm 25 is meshed with the outer side of the first worm gear 24. A first rotating seat 251 is rotatably mounted on the outer side of the first worm 25. The first rotating seat 251 is fixedly mounted on the outer side of the rotating frame 22. A first motor 26 is fixedly mounted on the side of the rotating frame 22 near the first worm 25. The drive end of the first motor 26 is fixedly mounted to the top end of the first worm 25. By controlling the first motor 26 to drive the first worm 25 to drive the first worm gear 24 to rotate, the argon arc welding head 3 will swing at a small angle at the bottom of the rotating frame 22, or the argon arc welding head 3 will rotate 180 degrees at the bottom of the rotating frame 22. A first cover is fixedly mounted on the side end of the rotating frame 22 to protect the first worm gear 24, the first worm 25 and the first motor 26.

[0040] The grinding component 4 includes a lifting cylinder 41, of which two are symmetrically distributed. The lifting cylinder 41 is fixedly installed at the bottom center of the rotating crossbeam 21. A grinding crossbeam 42 is fixedly installed at the drive end of the lifting cylinder 41. A rotating cylinder 43 is rotatably installed at the center of the grinding crossbeam 42. A connector 431 is integrally formed at the top center of the rotating cylinder 43. A mounting groove 401 is formed at the bottom center of the rotating cylinder 43. A suction cavity is formed in the rotating cylinder 43, and the suction cavity and the connector 431 are interconnected. A grinding frame is fixedly clamped in the connector 431. 44. The bottom center of the grinding frame 44 is provided with a grinding groove 441 corresponding to the tungsten electrode tip 31. When it is necessary to grind the tungsten electrode tip 31, the argon arc welding head 3 is first controlled to rotate 180 degrees at the bottom of the rotating frame 22, so that the tungsten electrode tip 31 is rotated from the bottom to the top position, so that the tungsten electrode tip 31 and the grinding frame 44 are vertically aligned. The lifting cylinder 41 is controlled to drive the grinding cross frame 42, the rotating cylinder 43 and the grinding frame 44 to descend, so that the tungsten electrode tip 31 is movably engaged in the corresponding grinding groove 441, so that the surface of the tungsten electrode tip 31 contacts the inner wall of the grinding groove 441.

[0041] A driven gear ring 45 is fixedly sleeved on the outer middle of the rotating cylinder 43. A second motor 451 is fixedly installed at the top of the grinding crossbeam 42. A drive shaft 452 is fixedly installed at the drive end of the second motor 451. The bottom end of the drive shaft 452 extends out of the bottom end of the grinding crossbeam 42 and is fixedly installed with a drive gear 453. The drive gear 453 and the driven gear ring 45 are meshed and connected. The second motor 451 is turned on to drive the drive gear 453 to drive the driven gear ring 45 to rotate at high speed, thereby driving the rotating cylinder 43 and the grinding frame 44 to rotate at high speed. This controls the grinding frame 44 to automatically grind the tungsten electrode needle 31, improving the subsequent use effect of the tungsten electrode needle 31.

[0042] The grinding frame 44 has multiple suction grooves 442 arranged in a ring array on its outer side. The inner wall of the mounting groove 401 has multiple sets of suction holes 402 corresponding to the suction grooves 442. A sealing rotating component 46 is fixedly clamped in the middle of the connector 431. A connecting pipe 461 is fixedly installed in the middle of the sealing rotating component 46. By setting the sealing rotating component 46, the high-speed rotation of the grinding frame 44 does not affect the sealing connection between the connector 431 and the connecting pipe 461. In use, the end of the connecting pipe 461 is connected to the suction port of the vacuum pump. When the tungsten electrode needle 31 is automatically grinding, the vacuum pump is turned on simultaneously. The waste generated by automatic grinding is sucked into the suction chamber through the multiple suction grooves 442 and the multiple sets of suction holes 402, and then sucked into the vacuum pump through the connecting pipe 461.

[0043] The feeding mechanism 5 includes a connecting longitudinal frame 51, which is vertically installed on the side of the bottom of the rotating cross frame 21 away from the rotating longitudinal frame 22. A rotating sleeve 52 is movably fitted onto the bottom of the connecting longitudinal frame 51, and a rotating shaft 511 is fixedly installed on the bottom of the connecting longitudinal frame 51. The rotating shaft 511 is rotatably engaged with the middle of the rotating sleeve 52, and a fixing sleeve 521 is fixedly installed on the outer side of the rotating sleeve 52. The fixing sleeve 521 and the rotating sleeve 52 facilitate feeding from the outside of the rotating shaft 511. The fixed sleeve 521 is fixedly fitted with a support tube 53 in the middle. The support tube 53 is inclined and the bottom of the support tube 53 is fixedly fitted with a fixed feed component 54. By controlling the fixed sleeve 521 and the rotating sleeve 52 to rotate outside the rotating shaft 511, the support tube 53 and the fixed feed component 54 are driven to rotate around the rotating shaft 511. The angle of the support tube 53 and the fixed feed component 54 can be flexibly adjusted so as to flexibly adjust the angle of the welding wire 6 feeding, thereby improving the flexibility of the entire welding device.

[0044] The fixed conveying component 54 includes a positioning ring frame 541, which is fixedly snapped onto the bottom of the support tube 53. The positioning ring frame 541 is a hollow structure. Multiple positioning slide frames 542 arranged in a circular array are slidably mounted on the inner side of the positioning ring frame 541. Each of the opposite ends of the multiple positioning slide frames 542 is movably mounted with a conveying wheel 543. A drive ring disk 544, which cooperates with the multiple positioning slide frames 542, is rotatably mounted in the center of the inner cavity of the positioning ring frame 541. The lower surface of 544 is provided with a planar threaded protrusion, and the upper surface of the plurality of positioning slide frames 542 is provided with a planar threaded groove that cooperates with the planar threaded protrusion. The planar threaded protrusion is movably engaged in the planar threaded groove. The welding wire 6 movably passes through the support tube 53 and the positioning ring frame 541. The outer wall of the welding wire 6 contacts the plurality of conveyor wheels 543. The welding wire 6 is movably passed through the support tube 53 and the positioning ring frame 541, so that the outer wall of the welding wire 6 contacts the plurality of conveyor wheels 543 for positioning.

[0045] A fourth motor 5432 is fixedly installed in one of the positioning slide frames 542. A belt pulley transmission assembly 5431 is fixedly installed between the drive end of the fourth motor 5432 and the shaft end of the corresponding input wheel 543. The belt pulley transmission assembly 5431 includes two pulleys and a transmission belt that is movably sleeved on the outside of the two pulleys. The two pulleys are respectively fixedly installed on the drive end of the corresponding fourth motor 5432 and the shaft end of the corresponding input wheel 543. The fourth motor 5432 is turned on and, in conjunction with the transmission of the belt pulley transmission assembly 5431, drives the corresponding input wheel 543 to rotate, thereby automatically feeding the welding wire 6.

[0046] A drive ring frame 545 is fixedly mounted on the middle of the upper surface of the drive ring disc 544. A third worm gear 546 is fixedly mounted on the outer side of the drive ring frame 545. A third worm 547 is meshed with the outer side of the third worm gear 546. Auxiliary seats 5471 are rotatably mounted on both ends of the third worm 547. The auxiliary seats 5471 are fixedly engaged in the inner cavity of the positioning ring frame 541. One end of the third worm 547 extends out of the outer side of the positioning ring frame 541. The third worm 547 is manually rotated using a tool to drive the third worm gear 546 to rotate, thereby driving the drive ring frame 544. 5. The drive ring disk 544 rotates, and the planar threaded protrusion engages in the planar threaded groove, controlling the multiple positioning slide frames 542 and the input wheel 543 to move in opposite directions. Conversely, the third worm gear 547 is manually rotated in the opposite direction using a tool to drive the third worm wheel 546 to rotate, thereby driving the drive ring frame 545 and the drive ring disk 544 to rotate in the opposite direction, and the planar threaded protrusion engages in the planar threaded groove, controlling the multiple positioning slide frames 542 and the input wheel 543 to move in opposite directions. The spacing of the multiple input wheels 543 can be flexibly adjusted to adapt to the positioning of welding wires 6 with different outer diameters.

[0047] A second worm gear 512 is fixedly installed at one end of the rotating shaft 511. A second worm 513 is meshed with the outer side of the second worm gear 512. A second rotating seat 514 is rotatably installed on the outer side of the second worm 513. The second rotating seat 514 is fixedly installed on the outer side of the rotating sleeve 52. A third motor 515 is fixedly installed on the outer wall of the rotating sleeve 52 near the second worm 513. The drive end of the third motor 515 is fixedly installed at one end of the second worm 513. In use, the third motor 515 is turned on to drive the second worm 513 to rotate. Since the second worm gear 512 and the second worm 513 are meshed, the fixed sleeve 521 and the rotating sleeve 52 are controlled to rotate on the outer side of the rotating shaft 511.

[0048] Working principle: When in use, the entire welding device is fixedly installed on the output end of the robot arm through the mounting base 1. The robot arm is used to control the position adjustment of the entire welding device, which makes it convenient to use the welding device to perform automatic argon arc welding on different positions of automotive stamping parts.

[0049] Subsequently, the end of the connecting pipe 461 is connected to the suction port of the dust pump, and the welding wire 6 is moved through the support pipe 53 and the positioning ring frame 541, so that the outer wall of the welding wire 6 contacts the multiple conveying wheels 543 to position the welding wire 6.

[0050] Subsequently, the control starts the third motor 515 to drive the second worm 513 to rotate. Since the second worm wheel 512 and the second worm 513 are meshed, the control fixation sleeve 521 and the rotating sleeve 52 rotate on the outside of the rotating shaft 511, driving the support tube 53 and the fixed conveyor 54 to rotate around the rotating shaft 511. The angle of the support tube 53 and the fixed conveyor 54 can be flexibly adjusted so as to flexibly adjust the angle of the welding wire 6 until the angle is appropriate.

[0051] Subsequently, the argon arc welding head 3 is turned on, and the fourth motor 5432 is turned on at the same time. In conjunction with the transmission of the belt pulley transmission group 5431, the corresponding input wheel 543 is driven to rotate, thereby automatically feeding the welding wire 6 and performing argon arc welding on the automotive stamping parts.

[0052] During argon arc welding, the first motor 26 is activated to drive the first worm gear 25 to rotate the first worm wheel 24, thereby causing the argon arc welding head 3 to swing at a small angle at the bottom of the rotating frame 22. In conjunction with the argon arc welding head 3 moving forward along the weld seam, the argon arc welding head 3 automatically swings at a small angle to perform forward swinging argon arc welding on the automotive stamping parts, thereby forming a wavy weld seam on the automotive stamping parts and improving the welding effect of the automotive stamping parts.

[0053] The third worm gear 547 is manually rotated using a tool to drive the third worm wheel 546 to rotate, thereby driving the drive ring frame 545 and drive ring disk 544 to rotate. The planar thread protrusion is movably engaged in the planar thread groove, controlling the multiple positioning slide frames 542 and the input wheel 543 to move towards each other. Conversely, the third worm gear 547 is manually rotated in the opposite direction using a tool to drive the third worm wheel 546 to rotate, thereby driving the drive ring frame 545 and drive ring disk 544 to rotate in the opposite direction. The planar thread protrusion is movably engaged in the planar thread groove, controlling the multiple positioning slide frames 542 and the input wheel 543 to move in opposite directions. The spacing of the multiple input wheels 543 can be flexibly adjusted to adapt to the positioning of welding wires 6 with different outer diameters.

[0054] When it is necessary to grind the tungsten electrode tip 31, the first motor 26 is activated to drive the first worm gear 25 to rotate the first worm wheel 24, causing the argon arc welding head 3 to rotate 180 degrees at the bottom of the rotating frame 22, flipping the tungsten electrode tip 31 from the bottom to the top position, so that the tungsten electrode tip 31 and the grinding frame 44 are vertically aligned. The lifting cylinder 41 is activated to drive the grinding cross frame 42, the rotating cylinder 43 and the grinding frame 44 to descend, so that the tungsten electrode tip 31 is movably engaged in the corresponding grinding groove 441, so that the surface of the tungsten electrode tip 31 contacts the inner wall of the grinding groove 441.

[0055] At the same time, the second motor 451 is activated to drive the drive gear 453 to drive the driven gear ring 45 to rotate at high speed, thereby driving the rotating cylinder 43 and the grinding frame 44 to rotate at high speed, and then controlling the grinding frame 44 to automatically grind the tungsten electrode needle 31, thereby improving the subsequent use effect of the tungsten electrode needle 31.

[0056] When the tungsten electrode needle 31 is automatically ground, the dust pump is turned on simultaneously. The waste generated by the automatic grinding is sucked into the suction chamber through multiple dust collection slots 442 and multiple sets of dust collection holes 402, and then sucked into the dust pump through the connecting pipe 461 for automatic collection of waste, preventing waste from affecting the environment.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for automotive stamping parts, comprising a mounting base (1), characterized in that: A rotating mechanism (2) is fixedly installed at the bottom of the mounting base (1). An argon arc welding head (3) is provided at the bottom of the rotating mechanism (2). A tungsten electrode needle (31) is detachably installed at the bottom of the argon arc welding head (3). A grinding part (4) corresponding to the tungsten electrode needle (31) is fixedly installed at the top of the rotating mechanism (2). A feeding mechanism (5) is fixedly installed on one side of the rotating mechanism (2). A welding wire (6) is provided in the feeding mechanism (5) for use with the argon arc welding head (3). The rotating mechanism (2) includes a rotating crossbeam (21), which is fixedly installed at the bottom end of the mounting base (1). A rotating longitudinal frame (22) is vertically installed at the bottom end of the rotating crossbeam (21). A rotating bearing (23) is fixedly clamped at the bottom of the rotating longitudinal frame (22). The handle of the argon arc welding head (3) is fixedly clamped to the middle of the rotating bearing (23). The grinding component (4) includes a lifting cylinder (41), two of which are symmetrically distributed. The lifting cylinder (41) is fixedly installed at the bottom center of the rotating crossbeam (21). The driving end of the lifting cylinder (41) is fixedly installed with a grinding crossbeam (42). A rotating cylinder (43) is rotatably installed in the middle of the grinding crossbeam (42). A connector (431) is integrally formed at the top center of the rotating cylinder (43). An installation groove (401) is opened at the bottom center of the rotating cylinder (43). A suction cavity is opened in the rotating cylinder (43). The suction cavity and the connector (431) are interconnected. A grinding frame (44) is fixedly clamped in the connector (431). A grinding groove (441) corresponding to the tungsten electrode needle (31) is opened at the bottom center of the grinding frame (44). The grinding frame (44) has multiple dust collection grooves (442) arranged in a ring array on its outer side. The inner wall of the mounting groove (401) has multiple sets of dust collection perforations (402) corresponding to the dust collection grooves (442). A sealing rotating part (46) is fixedly installed in the middle of the connector (431). A connecting pipe (461) is fixedly installed in the middle of the sealing rotating part (46).

2. The welding device for automotive stamping parts according to claim 1, characterized in that: The rotating mechanism (2) further includes a first worm gear (24), which is fixedly engaged with the handle of the argon arc welding head (3). A first worm (25) is meshed with the outer side of the first worm gear (24). A first rotating seat (251) is rotatably mounted on the outer side of the first worm (25). The first rotating seat (251) is fixedly mounted on the outer side of the rotating frame (22). A first motor (26) is fixedly mounted on the side of the rotating frame (22) near the first worm (25). The drive end of the first motor (26) and the top end of the first worm (25) are fixedly mounted.

3. The welding device for automotive stamping parts according to claim 1, characterized in that: A driven gear ring (45) is fixedly sleeved on the middle of the outer side of the rotating cylinder (43). A second motor (451) is fixedly installed on the top of the grinding crossbeam (42). A drive shaft (452) is fixedly installed on the drive end of the second motor (451). The bottom end of the drive shaft (452) extends out of the bottom end of the grinding crossbeam (42) and is fixedly installed with a drive gear (453). The drive gear (453) and the driven gear ring (45) are meshed together.

4. The welding device for automotive stamping parts according to claim 1, characterized in that: The feeding mechanism (5) includes a connecting longitudinal frame (51). The feeding mechanism (5) is vertically installed on the side of the bottom of the rotating cross frame (21) away from the rotating longitudinal frame (22). The bottom of the connecting longitudinal frame (51) is movably fitted with a rotating sleeve (52). The bottom of the connecting longitudinal frame (51) is fixedly installed with a rotating shaft (511). The rotating shaft (511) is rotatably engaged in the middle of the rotating sleeve (52). The outer side of the rotating sleeve (52) is fixedly installed with a fixing sleeve (521). The middle of the fixing sleeve (521) is fixedly fitted with a support tube (53). The support tube (53) is inclined. The bottom of the support tube (53) is fixedly fitted with a fixed conveying component (54).

5. The welding device for automotive stamping parts according to claim 4, characterized in that: The fixed conveying component (54) includes a positioning ring frame (541), which is fixedly snapped into the bottom of the support tube (53). The positioning ring frame (541) is hollow. Multiple positioning slide frames (542) are arranged in a ring array on the inner side of the positioning ring frame (541). The opposite ends of the multiple positioning slide frames (542) are movably snapped into the conveying wheels (543). The middle of the inner cavity of the positioning ring frame (541) is rotatably snapped into the driving ring disk (544) that cooperates with the multiple positioning slide frames (542). The lower surface of the driving ring disk (544) is provided with a planar threaded protrusion. The upper surface of the multiple positioning slide frames (542) is provided with a planar threaded groove that cooperates with the planar threaded protrusion. The planar threaded protrusion is movably snapped into the planar threaded groove. The welding wire (6) movably passes through the support tube (53) and the positioning ring frame (541). The outer wall of the welding wire (6) is in contact with the multiple conveying wheels (543).

6. The welding device for automotive stamping parts according to claim 5, characterized in that: A fourth motor (5432) is fixedly installed in one of the positioning slide frames (542). A belt pulley transmission assembly (5431) is fixedly installed between the drive end of the fourth motor (5432) and the shaft end of the corresponding transmission wheel (543). The belt pulley transmission assembly (5431) includes two pulleys and a transmission belt that is movably sleeved on the outside of the two pulleys. The two pulleys are respectively fixedly installed at the drive end of the corresponding fourth motor (5432) and the shaft end of the corresponding transmission wheel (543).

7. The welding device for automotive stamping parts according to claim 5, characterized in that: A drive ring frame (545) is fixedly installed in the middle of the upper surface of the drive ring disc (544). A third worm gear (546) is fixedly installed on the outer side of the drive ring frame (545). A third worm (547) is meshed with the outer side of the third worm gear (546). An auxiliary seat (5471) is rotatably installed at both ends of the third worm (547). The auxiliary seat (5471) is fixedly snapped into the inner cavity of the positioning ring frame (541). One end of the third worm (547) extends out of the outer side of the positioning ring frame (541).

8. The welding device for automotive stamping parts according to claim 4, characterized in that: A second worm gear (512) is fixedly installed at one end of the rotating shaft (511). A second worm (513) is meshed with the outer side of the second worm gear (512). A second rotating seat (514) is rotatably installed on the outer side of the second worm (513). The second rotating seat (514) is fixedly installed on the outer side of the rotating sleeve (52). A third motor (515) is fixedly installed on the outer wall of the rotating sleeve (52) near the second worm (513). The drive end of the third motor (515) and one end of the second worm (513) are fixedly installed.

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