Wire feeding mechanism of a welding device

Abstract

The present invention relates to the technical field of welding, and particularly to a wire feeding mechanism of a welding device, which includes a bracket, a welding torch, and a wire feeding structure arranged on the bracket. A wire feeding tube is fixedly connected between the welding torch and the wire outlet end of the wire feeding structure. A support frame is fixedly connected to the inner side of the bracket. A wire releasing roller for fixing a wire spool is rotatably connected to the front side of the support frame. The rear side of the wire releasing roller passes through the support frame and is fixedly connected to a rotating rod. A rotating disk is fixedly connected to the outer wall of the rotating rod. A fixed cylinder is fixedly connected through the top of the support frame, and a moving knife and a fixed knife are respectively arranged in the fixed cylinder. A through groove is formed through the bottom of the fixed cylinder. A winding mechanism for driving the wire releasing roller to wind is arranged in the support frame. When it is necessary to replace the wire spool, the welding torch can be inserted into the fixed cylinder. Subsequently, under the mutual cooperation of the winding mechanism and the moving mechanism, the molten droplets of the wire on the welding torch are automatically cut off, and then the redundant wire is wound on the wire spool, thereby realizing the automatic wire withdrawal of the device without the need for manual operation.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a wire feeding mechanism of welding equipment. Background Art

[0002] The wire feeder generally has a control part to provide parameter settings, the drive part drives the wire feeding under the control of the control part, and the wire feeding nozzle part sends the welding wire to the welding gun position. It is an automatically driven mechanized wire feeding device, which is mainly used for automatic wire feeding in manual welding, automatic wire feeding in argon arc welding, automatic wire feeding in plasma welding and automatic wire feeding in laser welding. The system adopts microcomputer control and stepping reduction motor transmission, with high wire feeding accuracy and good repeatability.

[0003] The prior art discloses a welding wire feeding device with publication number CN115519286A. After the welding device stops, the power is turned off, the electromagnet is powered off, and under the attraction of the permanent magnet, it moves downward to drive the pressure plate to press the wire reel to prevent the reel from continuing to rotate, thereby effectively preventing the welding wire from continuing to move forward. When the pressure plate moves downward, it drives the driving slider to move downward, and drives the clamping arm to clamp the wire feeding shaft through the driving slider, so that the wire feeding wheel stops rotating, thereby further ensuring that the welding wire is no longer fed forward, effectively preventing the welding wire from showing signs of looseness.

[0004] Although the welding wire can be transported during the welding process, there are still some defects in the actual welding process. Since the wire feeding mechanism lacks an automatic wire rewinding structure, after the welding wire on the wire reel is used up, workers are required to use tools to cut off the molten droplets on the end of the welding wire, and then manually rotate the wire reel in reverse to wind the excess welding wire back before replacing the new wire reel. This is not only time-consuming and labor-intensive, but also consumes a lot of time, which greatly reduces the welding efficiency of the device.

[0005] Therefore, a wire feeding mechanism of a welding device is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a wire feeding mechanism for welding equipment.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: A wire feeding mechanism of a welding device, comprising a bracket and a welding torch, as well as a wire feeding structure arranged on the bracket. A wire feeding pipe is fixedly connected between the welding torch and the wire outlet end of the wire feeding structure. A support frame is fixedly connected to the inner side of the bracket. A wire releasing roller for fixing a wire spool is rotatably connected to the front side of the support frame. The rear side of the wire releasing roller passes through the support frame and is fixedly connected to a rotating rod. A rotating disk is fixedly connected to the outer wall of the rotating rod. A fixed cylinder is fixedly connected through the top of the support frame, and a moving knife and a fixed knife are respectively arranged in the fixed cylinder. A through groove is opened through the bottom of the fixed cylinder. A winding mechanism for driving the wire releasing roller to wind is arranged in the support frame;

[0008] The winding mechanism includes a toothed ring. A fixing plate is slidably connected to the inner bottom end of the support frame. A sliding groove is opened on the front side of the fixing plate at a position corresponding to the rotating rod. The toothed ring is rotatably connected to the front side of the fixing plate and is located outside the rotating rod. A rack meshing with the toothed ring is slidably connected to the inner bottom end of the support frame. A pair of pushing plates are fixedly connected to the front side of the toothed ring. Arc-shaped L-shaped plates for abutting against the outer side of the rotating disk are fixedly connected to the front sides of the pushing plates. A sliding block is arranged in the support frame. A connecting block is fixedly connected to the top end of the rear side of the sliding block. An abutting block is fixedly connected to the bottom end of the connecting block. An inclined groove is opened on one side of the abutting block close to the fixing plate. A connecting frame is fixedly connected to the front side of the fixing plate. An inclined block is fixedly connected to the front side of the connecting frame and is fitted with the inclined groove. A moving mechanism for driving the sliding block and the moving knife to slide is arranged in the support frame. A push rod is fixedly connected to the top of the connecting block. A U-shaped frame is fixedly connected to the front side of the rack.

[0009] In the above technical solution, further, the width of the rack is greater than the width of the toothed ring. Anti-slip pads are fixedly connected to the sides of the arc-shaped L-shaped plate and the rotating disk that are close to each other. The abutting block and the connecting frame are arranged in a staggered manner.

[0010] In the above technical solution, further, a recessed groove is opened on the rear side of the inner wall of the support frame. A pair of upper springs are fixedly connected between the recessed groove and the fixing plate.

[0011] In the above technical solution, further, the moving mechanism includes a servo motor. The servo motor is fixedly connected to the side wall of the support frame. A threaded rod is rotatably connected to the inner side of the support frame. The output end of the servo motor passes through the side wall of the support frame and is fixedly connected to the side wall of the threaded rod. The threaded rod is threadedly connected through the inner side wall of the sliding block. A bottom rod is arranged between the connecting block and the rack and is located below the fixed cylinder. A material guiding frame is fixedly connected to the top of the bottom rod. The moving knife is fixedly connected to the top end of the material guiding frame. The fixed knife is fixedly connected to the inner side of the through groove;

[0012] A recessed bottom groove is formed on the front side of the bottom rod. A right-angled upper block is slidably connected to the inner side of the bottom groove. A positioning rod is fixedly connected between the bottom of the support frame and located between the abutting block and the rack. A right-angled lower block is fixedly connected to the front side of the positioning rod. The end of the U-shaped frame away from the tooth ring and the bottom rod are arranged staggeredly.

[0013] In the above technical solution, further, a lower spring is fixedly connected between the rear side of the right-angled upper block and the inner side of the bottom groove. The outer wall of the push rod abuts against the rear side of the right-angled upper block, and the right-angled lower block and the push rod are arranged staggeredly.

[0014] In the above technical solution, further, a return spring is fixedly connected between the positioning rod and the bottom rod.

[0015] In the above technical solution, further, a push ring is slidably connected to the inner side of the fixed cylinder. A plurality of top springs are fixedly connected between the bottom of the push ring and the inner bottom end of the fixed cylinder. A touch sensor is arranged at the inner bottom end of the fixed cylinder. The touch sensor is electrically connected to the servo motor through a controller.

[0016] In the above technical solution, further, a limiting frame is fixedly connected to the inner side of the support frame at a position corresponding to the material guiding frame. A collecting box is slidably connected through the rear side of the support frame at a position corresponding to the limiting frame. The inner bottom end of the material guiding frame is inclined toward the collecting box.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When it is necessary to replace the wire spool, the welding torch can be inserted into the fixed cylinder. Subsequently, under the mutual cooperation of the wire winding mechanism and the moving mechanism, the molten droplets of the wire on the welding torch can be automatically cut off, and then the excess wire can be wound on the wire spool, thereby realizing the automatic wire feeding-back of the device, without the need for manual operation, saving a large number of cumbersome steps, and improving the welding efficiency of the device.

[0019] 2. Through the mutual cooperation of the touch sensor, the material guiding frame, the collecting box and the moving mechanism, not only can the wire be automatically fed back when the welding torch is inserted into the fixed cylinder, without pressing a switch for control, but also the cut wire can be collected, which is beneficial for subsequent unified processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front three-dimensional structural schematic diagram of the wire feeder of the present invention;

[0021] Figure 2 is a rear three-dimensional structural schematic diagram of the wire feeder of the present invention;

[0022] Figure 3 is a side partial cross-sectional three-dimensional structural schematic diagram of the wire feeder of the present invention;

[0023] Figure 4 Schematic diagram of the fully-sectioned three-dimensional structure of the rear view of the support frame of the present invention;

[0024] Figure 5 Attached to the present invention Figure 4 Schematic diagram of the partially enlarged structure at position A in

[0025] Figure 6 Schematic diagram of the fully-sectioned three-dimensional structure of the side view of the frame of the present invention;

[0026] Figure 7 Schematic diagram of the overall external structure of the winding mechanism of the present invention;

[0027] Figure 8 Schematic diagram of the three-dimensional structure of the front side of the fixing plate of the present invention;

[0028] Figure 9 Schematic diagram of the fully-sectioned three-dimensional structure of the side view of the bottom rod of the present invention;

[0029] Figure 10 Schematic diagram of the top view structure of the winding mechanism of the present invention.

[0030] In the figure: 1. Bracket; 2. Wire feeding structure; 3. Welding torch; 4. Wire feeding tube; 5. Support frame; 6. Wire releasing roller; 7. Rotating rod; 8. Rotary disk; 9. Fixed cylinder; 10. Through groove; 11. Tooth ring; 12. Fixing plate; 13. Chute; 14. Rack; 15. Push plate; 16. Arc-shaped L-shaped plate; 17. Sliding block; 18. Connecting block; 19. Block; 20. Inclined groove; 21. Connecting frame; 22. Inclined block; 23. Moving knife; 24. Fixed knife; 25. Anti-slip pad; 26. Groove; 27. Upper spring; 28. Servo motor; 29. Threaded rod; 30. Push rod; 31. U-shaped frame; 32. Bottom rod; 33. Material guiding frame; 34. Bottom groove; 35. Upper right-angle block; 36. Lower spring; 37. Positioning rod; 38. Lower right-angle block; 39. Return spring; 40. Push ring; 41. Top spring; 42. Touch sensor; 43. Limit frame; 44. Collection box. Detailed implementation manners

[0031] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0032] Such as Figures 1 - 10The wire feeding mechanism of a welding device shown in the figure includes a bracket 1 and a welding torch 3, as well as a wire feeding structure 2 provided on the bracket 1. The wire feeding structure 2 is a mature technology in the prior art and will not be described in detail here. A wire feeding tube 4 is fixedly connected between the welding torch 3 and the wire outlet end of the wire feeding structure 2. A support frame 5 is fixedly connected to the inner side of the bracket 1. A wire releasing roller 6 for fixing the wire reel is rotatably connected to the front side of the support frame 5. When installing the wire reel, the chuck on the wire releasing roller 6 is screwed out, and then the wire reel can be inserted. The wire releasing direction of the wire reel is placed opposite to the subsequent wire withdrawing direction. At the same time, the positioning part is inserted into the opening in the wire reel, and then the chuck is tightened. The rear side of the wire releasing roller 6 passes through the support frame 5 and is fixedly connected to a rotating rod 7. An eccentric disc 8 is fixedly connected to the outer wall of the rotating rod 7. A fixed cylinder 9 is fixedly connected through the top of the support frame 5, and a moving knife 23 and a fixed knife 24 are respectively arranged in the fixed cylinder 9. A through groove 10 is opened through the bottom of the fixed cylinder 9. Through the setting of the through groove 10, the normal movement of the moving knife 23 and the sliding of the cut wire are prevented from being affected. A winding mechanism for driving the wire releasing roller 6 to wind is arranged in the support frame 5;

[0033] The winding mechanism includes a gear ring 11. A fixing plate 12 is slidably connected to the inner bottom end of the support frame 5. A chute 13 is opened on the front side of the fixing plate 12 at a position corresponding to the rotating rod 7. Through the setting of the chute 13, the fixing plate 12 is prevented from being blocked by the rotating rod 7 when sliding. The gear ring 11 is rotatably connected to the front side of the fixing plate 12 and is located outside the rotating rod 7. A rack 14 meshing with the gear ring 11 is slidably connected to the inner bottom end of the support frame 5. A pair of push plates 15 are fixedly connected to the front side of the gear ring 11. Arc-shaped L-shaped plates 16 for abutting against the outer side of the eccentric disc 8 are fixedly connected to the front sides of the push plates 15. A sliding block 17 is arranged in the support frame 5. A connecting block 18 is fixedly connected to the top end of the rear side of the sliding block 17. A resisting block 19 is fixedly connected to the bottom end of the connecting block 18. An inclined groove 20 is opened on one side of the resisting block 19 close to the fixing plate 12. A connecting frame 21 is fixedly connected to the front side of the fixing plate 12. An inclined block 22 is fixedly connected to the front side of the connecting frame 21 and is fitted with the inclined groove 20. A moving mechanism for driving the sliding block 17 and the moving knife 23 to slide is arranged in the support frame 5;

[0034] The top of the connecting block 18 is fixedly connected to a push rod 30, and the front side of the rack 14 is fixedly connected to a U-shaped frame 31. The width of the rack 14 is greater than the width of the gear ring 11, which can ensure that the gear ring 11 is still in meshing with the rack 14 after sliding. The arc-shaped L-shaped plate 16 and the side close to the rotating disk 8 are fixedly connected with an anti-skid pad 25. Through the setting of the anti-skid pad 25, the friction between the arc-shaped L-shaped plate 16 and the rotating disk 8 is increased, thereby ensuring that the wire release roller 6 can be driven to rotate normally. The stop block 19 and the connecting frame 21 are staggered to avoid being hindered by the connecting frame 21 when the stop block 19 slides over the tilting block 22, affecting the normal operation of the device. An inward groove 26 is provided on the rear side of the inner wall of the support frame 5, and a pair of upper springs 27 are fixedly connected between the groove 26 and the fixed plate 12. Through the setting of the upper spring 27, it is convenient for the stop block 19 to be reset by the elastic force of the upper spring 27 to quickly reset the fixed plate 12;

[0035] During the process of the wire feeder withdrawing the wire and cutting off the molten drop on the welding gun 3, the movement of the connecting block 18 will drive the stop block 19 to move, thereby squeezing the inclined block 22 through the inclined groove 20 to drive the fixed plate 12 to slide through the connecting frame 21, thereby driving the gear ring 11, the push plate 15 and the arc-shaped L-shaped plate 16 to move, and at the same time stretching the upper spring 27 and driving the gear ring 11 to slide on the rack 14, so that the side wall of the arc-shaped L-shaped plate 16 is tightly pressed against the outer side of the rotating disk 8, and at the same time, the two anti-slip pads 25 are squeezed to ensure the tightness of the connection, and then the moving mechanism is moved. The servo motor 28 drives the push rod 30 to continue to move, which will push the U-shaped frame 31 and the rack 14 to slide, thereby driving the meshing gear ring 11 to rotate, and at the same time push the tilting block 22 to the front side of the stop block 19, thereby driving the push plate 15 and the arc-shaped L-shaped plate 16 to rotate, and then driving the rotating disk 8, the rotating rod 7 and the wire-releasing roller 6 to rotate, thereby realizing automatic winding of excess welding wire without the need for worker operation, eliminating a large number of tedious steps, and improving the welding efficiency of the device. Finally, the welding wire reel is removed from the wire-releasing roller 6, and the servo motor 28 is controlled to rotate in the opposite direction for reset.

[0036] In order to automatically cut off the molten droplet on the welding gun 3 and avoid the molten droplet getting stuck and affecting the normal wire withdrawal of the device, the moving mechanism includes a servo motor 28, the servo motor 28 is fixedly connected to the side wall of the support frame 5, and the inner side of the support frame 5 is rotatably connected with a threaded rod 29, the output end of the servo motor 28 passes through the side wall of the support frame 5 and is fixedly connected to the side wall of the threaded rod 29, the threaded rod 29 is threadedly connected to the inner wall of the sliding block 17, a bottom rod 32 is provided between the connecting block 18 and the rack 14 and below the fixed cylinder 9, the top of the bottom rod 32 is fixedly connected to a material guide frame 33, the moving knife 23 is fixedly connected to the top of the material guide frame 33, and the fixed knife 24 is fixedly connected to the inner side of the through groove 10;

[0037] A recessed bottom groove 34 is formed on the front side of the bottom rod 32. A right-angled upper block 35 is slidably connected to the inner side of the bottom groove 34. A positioning rod 37 is fixedly connected to the bottom of the support frame 5 and located between the abutting block 19 and the rack 14. A right-angled lower block 38 is fixedly connected to the front side of the positioning rod 37. The end of the U-shaped frame 31 away from the tooth ring 11 and the bottom rod 32 are arranged in a staggered manner, so as to avoid the other end being blocked by the bottom rod 32 when the sliding block 17 pushes the U-shaped frame 31 to move. A lower spring 36 is fixedly connected between the rear side of the right-angled upper block 35 and the inner side of the bottom groove 34. The outer wall of the push rod 30 abuts against the rear side of the right-angled upper block 35, and the right-angled lower block 38 and the push rod 30 are arranged in a staggered manner, which can prevent the right-angled lower block 38 from squeezing the right-angled upper block 35 into the bottom groove 34 and then blocking the continuous movement of the push rod 30, and will not affect the pushing of the right-angled upper block 35. A return spring 39 is fixedly connected between the positioning rod 37 and the bottom rod 32;

[0038] When the wire spool needs to be replaced, first insert the welding torch 3 into the fixed cylinder 9, then start the servo motor 28 to drive the threaded rod 29 to rotate, and then drive the sliding block 17 connected by the thread to move, and at the same time drive the connecting block 18 and the push rod 30 to move. At this time, the outer wall of the push rod 30 abuts against the vertical surface of the right-angled upper block 35, so as to push the right-angled upper block 35 and the bottom rod 32 to move, and at the same time compress the return spring 39, and then drive the material guiding frame 33 and the moving knife 23 to move. The cutting of the molten droplet part on the welding torch 3 is realized by the contact between the moving knife 23 and the fixed knife 24;

[0039] At the same time, the push rod 30 pushes the right-angled upper block 35 to move beside the right-angled lower block 38. As the push rod 30 continues to move, the right-angled upper block 35 is squeezed by the inclined surface of the right-angled lower block 38 and slides into the bottom groove 34 to squeeze the lower spring 36, so as to push the right-angled upper block 35 out of the contact position with the push rod 30. Then when the push rod 30 continues to slide and slides out of the front side of the right-angled upper block 35, it will push the bottom rod 32 to reset by the elastic force of the return spring 39, and at the same time push the right-angled upper block 35 to reset by the elastic force of the lower spring 36, so as to complete the automatic cutting of the molten droplet on the welding torch 3. Moreover, when the push rod 30 resets, it will squeeze the inclined surface of the right-angled upper block 35 to make it slide into the bottom groove 34 until the right-angled upper block 35 resets after the push rod 30 is removed, so as to ensure that the push rod 30 can push the right-angled upper block 35 to move during subsequent use.

[0040] In order to improve the automation efficiency of the device, a push ring 40 is slidably connected to the inner side of the fixed cylinder 9. A plurality of top springs 41 are fixedly connected between the bottom of the push ring 40 and the inner bottom end of the fixed cylinder 9. A touch sensor 42 is arranged at the inner bottom end of the fixed cylinder 9. The touch sensor 42 is electrically connected to the servo motor 28 through a controller;

[0041] During the wire retraction process, when the welding torch 3 is inserted into the fixed cylinder 9, the pushing ring 40 is squeezed by the insertion of the end of the welding torch 3, and then the top spring 41 is compressed. Subsequently, when the pushing ring 40 is squeezed to the bottom end inside the fixed cylinder 9, it will touch the touch sensor 42 at the bottom, and then transmit a signal to the controller. The controller controls the servo motor 28 to start to automatically cut the molten droplet, and then wind up the remaining welding wire, so that there is no need for workers to press the switch, further improving the working efficiency of the device.

[0042] In order to facilitate the collection of the cut welding wire, a limiting frame 43 is fixedly connected to the inner side of the support frame 5 at a position corresponding to the material guiding frame 33. A collection box 44 is slidably connected through the rear side of the support frame 5 at a position corresponding to the limiting frame 43. The inner bottom end of the material guiding frame 33 is inclined toward the collection box 44.

[0043] During the wire retraction process, the cut welding wire falls into the material guiding frame 33 by its own gravity. Subsequently, due to the inclined setting of the inner bottom end of the material guiding frame 33, the falling welding wire will fall into the collection box 44 by its own gravity, thus achieving the effect of centralized collection of the cut welding wire, which is conducive to subsequent unified processing. When it is necessary to clean the welding wire, pull the handle on the collection box 44 to pull out the collection box 44, and the welding wire can be poured out.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire feeding mechanism for a welding device, comprising a bracket, a welding torch, and a wire feeding structure disposed on the bracket. A wire feeding tube is fixedly connected between the welding torch and the wire outlet end of the wire feeding structure. It is characterized in that: A support frame is fixedly connected to the inner side of the bracket. A wire feeding roller for fixing a welding wire reel is rotatably connected to the front side of the support frame. The rear side of the wire feeding roller passes through the support frame and is fixedly connected to a rotating rod. An outer wall of the rotating rod is fixedly connected to a rotating disk. A fixed cylinder penetrates and is fixedly connected to the top of the support frame, and a moving knife and a fixed knife are respectively arranged in the fixed cylinder. A through groove is formed through the bottom of the fixed cylinder. A winding mechanism for driving the wire feeding roller to wind is arranged in the support frame. The winding mechanism includes a toothed ring. A fixing plate is slidably connected to the inner bottom end of the support frame. A chute is formed in the front side of the fixing plate at a position corresponding to the rotating rod. The toothed ring is rotatably connected to the front side of the fixing plate and is located outside the rotating rod. A rack meshing with the toothed ring is slidably connected to the inner bottom end of the support frame. A pair of push plates are fixedly connected to the front side of the toothed ring. Arc-shaped L-shaped plates for abutting against the outer side of the rotating disk are fixedly connected to the front sides of the push plates. A sliding block is arranged in the support frame. A connecting block is fixedly connected to the top end of the rear side of the sliding block. A resisting block is fixedly connected to the bottom end of the connecting block. An inclined groove is formed in the side of the resisting block close to the fixing plate. A connecting frame is fixedly connected to the front side of the fixing plate. An inclined block is fixedly connected to the front side of the connecting frame and is attached to the inclined groove. A moving mechanism for driving the sliding block and the moving knife to slide is arranged in the support frame. A push rod is fixedly connected to the top of the connecting block. A U-shaped frame is fixedly connected to the front side of the rack. The moving mechanism includes a servo motor. The servo motor is fixedly connected to the side wall of the support frame. A threaded rod is rotatably connected to the inner side of the support frame. An output end of the servo motor passes through the side wall of the support frame and is fixedly connected to the side wall of the threaded rod. The threaded rod is threadedly connected through the inner side wall of the sliding block. A bottom rod is arranged between the connecting block and the rack and below the fixed cylinder. A guide material frame is fixedly connected to the top of the bottom rod. The moving knife is fixedly connected to the top end of the guide material frame. The fixed knife is fixedly connected to the inner side of the through groove. An indented bottom groove is formed in the front side of the bottom rod. An upper right-angle block is slidably connected to the inner side of the bottom groove. A positioning rod is fixedly connected to the bottom of the support frame between the resisting block and the rack. A lower right-angle block is fixedly connected to the front side of the positioning rod. The end of the U-shaped frame away from the toothed ring and the bottom rod are arranged in a staggered manner.

2. The wire feeding mechanism of a welding device according to claim 1, characterized in that: The width of the rack is greater than the width of the toothed ring. Anti-slip pads are fixedly connected to the sides of the arc-shaped L-shaped plate and the rotating disk close to each other. The resisting block and the connecting frame are arranged in a staggered manner.

3. The wire feeding mechanism of a welding device according to claim 1, wherein: An indented groove is formed in the rear side of the inner wall of the support frame. A pair of upper springs are fixedly connected between the groove and the fixing plate.

4. The wire feeding mechanism of a welding device according to claim 1, characterized in that: A lower spring is fixedly connected between the rear side of the upper right-angle block and the inner side of the bottom groove. The outer wall of the push rod abuts against the rear side of the upper right-angle block, and the lower right-angle block and the push rod are arranged in a staggered manner.

5. The wire feeding mechanism of a welding device according to claim 1, characterized in that: A reset spring is fixedly connected between the positioning rod and the bottom rod.

6. The wire feeding mechanism of a welding device according to claim 1, characterized in that: A push ring is slidably connected to the inner side of the fixed cylinder. A plurality of top springs are fixedly connected between the bottom of the push ring and the inner bottom end of the fixed cylinder. A touch sensor is arranged at the inner bottom end of the fixed cylinder. The touch sensor is electrically connected to the servo motor through a controller.

7. The wire feeding mechanism of a welding device according to claim 1, characterized in that: A limiting frame is fixedly connected to the inner side of the support frame at a position corresponding to the material guiding frame. A collection box is slidably connected through the rear side of the support frame at a position corresponding to the limiting frame. The inner bottom end of the material guiding frame is inclined towards the collection box.

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