Metal conductive bridge wire welding device and welding method thereof

Abstract

The present invention relates to the field of metal conductive welding, and discloses a metal conductive bridge wire welding device and a welding method thereof, comprising: a driving component, a conductive component is arranged in the middle of one end of the driving component, and a reel-and-wind component is arranged at one end of the driving component and on both sides of the conductive component; the reel-and-wind component comprises a first rotating shaft and a second rotating shaft, a reel-and-wind disk is sleeved on the outer surface of one end of the first rotating shaft, and a reel-and-wind disk is sleeved on the outer surface of one end of the second rotating shaft, and metal bridge wires are wound around the outer surfaces of the reel-and-wind disk and the reel-and-wind disk; the conductive component comprises a connecting plate, and the present invention can quickly replace and repair the loss of the welding end of the welding head through the coordinated operation of the reel-and-wind component, the conductive component, the driving component and the cleaning component, thereby ensuring the stability of welding, and self-cleaning the welding slag on the outer surface of the welding head to ensure the content quality and meet people's use needs.

Description

Technical Field

[0001] The invention relates to the field of metal conductive welding, and in particular to a metal conductive bridge wire welding device and a welding method thereof. Background Art

[0002] In the context of the booming electronics industry today, the connection and assembly accuracy and quality requirements of various electronic components are becoming increasingly stringent. As a key conductive component in precision electronic components such as electronic detonators, the welding quality of metal conductive bridge wire is directly related to the overall performance and safety of the product;

[0003] Traditional welding methods, such as manual soldering with a soldering iron, have exposed many drawbacks when facing tiny objects such as metal conductive bridge wires that require extremely high welding accuracy and consistency. On the one hand, manual operation makes it difficult to accurately control the welding temperature, time and pressure, which can easily lead to problems such as cold soldering and over-soldering of the bridge wire welding head. Cold soldering will make the circuit connection unstable and cause signal transmission interruption; over-soldering may damage the material properties of the bridge wire and reduce its conductive efficiency. On the other hand, manual welding is inefficient and cannot meet the urgent demand for production capacity in large-scale industrial production, and labor costs have also risen accordingly;

[0004] As automation technology gradually penetrates into all aspects of the manufacturing industry, the field of electronic component welding is also exploring more efficient and accurate automated welding solutions. However, some existing automated welding equipment usually uses welding needles directly for welding during use. However, after a long period of welding, the tip of the welding needle will be worn out, making it impossible to perform effective welding work. The welding needle needs to be replaced, but during the replacement process, the welding efficiency will be affected and welding work cannot be continued. At the same time, the existing welding equipment does not have a self-cleaning function, resulting in welding slag adhering to the tip of the welding needle after welding, affecting the welding quality. Therefore, the existing automated welding equipment cannot meet people's use needs. Summary of the invention

[0005] The purpose of the present invention is to provide a metal conductive bridge wire welding device and a welding method thereof to solve the following technical problems:

[0006] How to quickly replace and repair the wear and tear of the welding end to ensure the normal operation of the welding work, and how to self-clean the welding slag adhered to the welding end to ensure the welding quality.

[0007] The object of the present invention can be achieved by the following technical solution: a metal conductive bridge wire welding device, comprising: a driving component, a conductive component is arranged in the middle of one end of the driving component, and a retractable and unreeling component is arranged at one end of the driving component and on both sides of the conductive component;

[0008] The reeling and unreeling component comprises a first rotating shaft and a second rotating shaft, a reeling disc is sleeved on the outer surface of one end of the first rotating shaft, a reeling disc is sleeved on the outer surface of one end of the second rotating shaft, and metal bridge wires are wound around the outer surfaces of the reeling and unreeling discs;

[0009] The conductive component comprises a connecting plate, a welding head is arranged at the bottom end of the connecting plate, a limiting groove is arranged at the center of the bottom end of the welding head, and a first limiting shaft hole is arranged on the outer surface of the connecting plate;

[0010] The driving component includes a first connecting block and a second connecting block, the second connecting block is fixedly connected to the middle outer surface of the first connecting block, a driving motor is fixedly installed on the side of the second connecting block, a transmission disk is fixedly installed on one end of the driving motor, a transmission belt is sleeved on the outer surface of the transmission disk, and a second limiting shaft hole is symmetrically opened at the bottom of the side of the first connecting block.

[0011] As a preferred embodiment of the present invention: a cleaning component is provided on the lower outer surface of the conductive component, and the cleaning component includes a connecting rod, both ends of the connecting rod are fixedly connected with toothed disks, an eccentric shaft is provided at the center edge of the connecting rod, a swing arm is rotatably sleeved on the outer surface of the eccentric shaft, the bottom end of the swing arm is rotatably connected to a connecting frame, cleaning wires are symmetrically provided on the bottom outer surface of the connecting frame, a transmission shaft is fixedly connected to the outer surface of one end of the eccentric shaft, and the transmission shaft is aligned with the axis of the connecting rod.

[0012] As a preferred solution of the present invention: transmission teeth are evenly arranged around the periphery of the winding disk, a reset torsion spring is fixedly installed between the bottoms of the first connecting blocks, and a limited position slideway is provided on the lower outer surface of the connecting plate.

[0013] As a preferred embodiment of the present invention: the conductive component also includes a limit assembly, which is symmetrically rotatably connected to the bottom end of the connecting plate and located at both side edges of the welding head, and both ends of the bottom surface of the connecting plate are fixedly connected to magnetic suction frames, and the limit assembly includes a limit block, and magnet sheets are symmetrically arranged on the top of the limit block and both sides of the bottom of the connecting plate, and one end of the top of the limit block is fixedly connected to the limit rotation shaft, and the inner two side surfaces of the limit block are provided with storage grooves, and a clamping block is rotatably installed inside the storage groove, and a tensioning spring is fixedly connected to the outer surface of the bottom side of the clamping block.

[0014] As a preferred solution of the present invention: the outer surfaces of one end of the first rotating shaft and the second rotating shaft are both provided with a clamping block, and the winding reel and the unwinding reel are respectively clamped with the clamping block on the outer surfaces of the first rotating shaft and the second rotating shaft.

[0015] As a preferred solution of the present invention: the first rotating shaft and the second rotating shaft are rotatably connected to the first connecting block through the second limiting shaft hole, the connecting plate is fixedly connected to the side center of the first connecting block, the connecting rod is rotatably connected to the connecting plate through the first limiting shaft hole, the toothed discs at both ends of the connecting rod are meshed and connected with the transmission teeth on the outer surface of the winding disc, and the driving motor is rotatably connected to one end of the first rotating shaft through a transmission belt.

[0016] As a preferred solution of the present invention: one end of the transmission shaft passes through the inner center of the reset torsion spring and is rotatably connected to the side of the first connecting block, one end of the reset torsion spring is fixedly connected to the outer surface of one end of the transmission shaft, the middle part of the connecting frame is slidably connected to the connecting plate through a limiting slide, the bottom outer surface of the clamping block is slidably connected to the outer surface of the metal bridge wire, and the middle part of the metal bridge wire is slidably overlapped on the bottom center of the welding head through a limiting groove.

[0017] A welding method of a metal conductive bridge wire welding device, comprising:

[0018] Step 1: first install the winding reel and the unwinding reel on the outer surfaces of the first rotating shaft and the second rotating shaft, and make the metal bridge wire overlap inside the limiting groove, and make the limiting component on one side slide and clamp on the outer surface of the metal bridge wire;

[0019] Step 2: Then use an external lifting device to drive the driving component to descend as a whole, so that the metal bridge wire inside the limiting groove is close to the product to be welded, and at the same time, the welding head is energized to transmit the high voltage current to the tip of the metal bridge wire, so that the metal bridge wire contacts the product to achieve the welding function;

[0020] Step 3. After the metal bridge wire has been welded multiple times, it is necessary to control the driving motor to rotate and drive the winding disk to rotate to wind up the metal bridge wire. At the same time, the metal bridge wire will slide at the bottom of the welding head to change the welding position of the outer surface of the metal bridge wire. When the winding disk rotates, it will drive the gear disk to rotate, and the gear disk will drive the connecting frame to descend through the swing arm, and the connecting frame will drive the cleaning wire to approach the outer surface of the bottom of the welding head, thereby cleaning the welding slag on the outer surface of the welding head. At the same time, the clamping block will limit the sliding metal bridge wire to ensure that the metal bridge wire is in a tensioned state, and ensure the stability of the welding at the bottom of the welding head;

[0021] Step 4: When the transmission teeth on the outer surface of the winding disk are separated from the outer surface of the toothed disk, the reset torsion spring will drive the toothed disk to reset and rotate, thereby driving the connecting frame and the cleaning wire to rise and reset, and then the welding head can continue to perform welding work.

[0022] Beneficial effects of the present invention:

[0023] (1) The present invention provides retractable and reeling components on both sides of the conductive component, so that the metal bridge wire can slide at the bottom end of the welding head, so that when the welding end is worn, the metal bridge wire can be controlled to slide, and the welding point can be quickly replaced and repaired, so that the welding equipment can continue welding;

[0024] (2) The present invention provides a cleaning component on the lower outer surface of the connecting plate, which can drive the cleaning component to clean the outer surface of the welding head when adjusting the welding position of the outer surface of the metal bridge wire, thereby ensuring the cleanliness of the outer surface of the welding head, thereby ensuring the normal welding work and welding quality of the welding head;

[0025] (3) The present invention can quickly replace and repair the loss of the welding end of the welding head through the coordinated operation of the winding and unwinding parts, the conductive parts, the driving parts and the cleaning parts, thereby ensuring the stability of welding, and self-cleaning the welding slag on the outer surface of the welding head to ensure the content quality and meet people's usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the main structure of the metal conductive bridge wire welding device;

[0028] Figure 2 It is a schematic diagram of the combined connection structure between components;

[0029] Figure 3 It is a schematic diagram of the structure of the reeling and unreeling components;

[0030] Figure 4 It is a schematic diagram of the structure of the conductive component;

[0031] Figure 5 It is a schematic diagram of the cutaway structure of the limit component;

[0032] Figure 6 It is a schematic diagram of the bottom structure of the driving component;

[0033] Figure 7 It is a schematic diagram of the cleaning component structure.

[0034] Description of the drawings: 1. Winding and unwinding component; 2. Conductive component; 3. Driving component; 4. Cleaning component; 11. First rotating shaft; 12. Winding reel; 13. Metal bridge wire; 14. Unwinding reel; 15. Second rotating shaft; 16. Transmission gear; 21. Limiting slideway; 22. Limiting assembly; 23. Limiting groove; 24. Welding head; 25. First limiting shaft hole; 26. Connecting plate; 27. Magnetic suction frame; 221. Magnet sheet; 222 , limit block; 223, tension spring; 224, clamping block; 225, limit shaft; 226, storage groove; 31, first connecting block; 32, driving motor; 33, transmission belt; 34, transmission plate; 35, reset torsion spring; 36, second limit shaft hole; 37, second connecting block; 41, eccentric shaft; 42, transmission shaft; 43, swing arm; 44, connecting frame; 45, cleaning wire; 46, toothed disc; 47, connecting rod. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 7 As shown, the present invention is a metal conductive bridge wire welding device, comprising: a driving component 3, a conductive component 2 is arranged in the middle of one end of the driving component 3, and a retractable and unreeling component 1 is arranged at one end of the driving component 3 and on both sides of the conductive component 2;

[0037] The reeling and unreeling component 1 comprises a first rotating shaft 11 and a second rotating shaft 15. A reeling reel 12 is sleeved on the outer surface of one end of the first rotating shaft 11, and a reeling reel 14 is sleeved on the outer surface of one end of the second rotating shaft 15. Metal bridge wires 13 are wound around the outer surfaces of the reeling reel 12 and the reeling reel 14.

[0038] The conductive component 2 includes a connecting plate 26, a welding head 24 is provided at the bottom end of the connecting plate 26, a limiting groove 23 is provided at the center of the bottom end of the welding head 24, and a first limiting shaft hole 25 is provided on the outer surface of the connecting plate 26;

[0039] The driving component 3 includes a first connecting block 31 and a second connecting block 37. The second connecting block 37 is fixedly connected to the middle outer surface of the first connecting block 31. A driving motor 32 is fixedly installed on the side of the second connecting block 37. A transmission disk 34 is fixedly installed at one end of the driving motor 32. A transmission belt 33 is sleeved on the outer surface of the transmission disk 34. A second limiting shaft hole 36 is symmetrically opened at the bottom of the side of the first connecting block 31.

[0040] A cleaning component 4 is provided on the lower outer surface of the conductive component 2, and the cleaning component 4 includes a connecting rod 47, both ends of the connecting rod 47 are fixedly connected with a toothed disk 46, an eccentric shaft 41 is provided at the central edge of the connecting rod 47, a swing arm 43 is rotatably sleeved on the outer surface of the eccentric shaft 41, and a connecting frame 44 is rotatably connected to the bottom end of the swing arm 43, and a cleaning wire 45 is symmetrically provided on the bottom outer surface of the connecting frame 44, and a transmission shaft 42 is fixedly connected to the outer surface of one end of the eccentric shaft 41, and the transmission shaft 42 is aligned with the axis of the connecting rod 47.

[0041] Transmission teeth 16 are evenly arranged around the periphery of the winding disk 12 , a reset torsion spring 35 is fixedly installed between the bottoms of the first connecting blocks 31 , and a limited position slideway 21 is provided on the lower outer surface of the connecting plate 26 .

[0042] The conductive component 2 also includes a limit assembly 22, which is symmetrically rotatably connected to the bottom end of the connecting plate 26 and located at the two side edges of the welding head 24. Both ends of the bottom surface of the connecting plate 26 are fixedly connected with magnetic suction frames 27. The limit assembly 22 includes a limit block 222. Magnet pieces 221 are symmetrically arranged on the top of the limit block 222 and on both sides of the bottom of the connecting plate 26. One end of the top of the limit block 222 is fixedly connected to a limit rotation shaft 225. Receiving grooves 226 are provided on both inner side surfaces of the limit block 222. A clamping block 224 is rotatably installed inside the storage groove 226. A tensioning spring 223 is fixedly connected to the outer surface of the bottom side of the clamping block 224.

[0043] The outer surfaces of one end of the first rotating shaft 11 and the second rotating shaft 15 are both provided with clamping blocks, and the winding reel 12 and the unwinding reel 14 are respectively clamped with the clamping blocks on the outer surfaces of the first rotating shaft 11 and the second rotating shaft 15, which can ensure that the winding reel 12 and the unwinding reel 14 follow the first rotating shaft 11 and the second rotating shaft 15 in operation.

[0044] The first rotating shaft 11 and the second rotating shaft 15 of the present invention are rotatably connected with the first connecting block 31 through the second limiting shaft hole 36, ensuring the stable rotation operation of the first rotating shaft 11 and the second rotating shaft 15, the connecting plate 26 is fixedly connected with the side center of the first connecting block 31, and the connecting rod 47 is rotatably connected with the connecting plate 26 through the first limiting shaft hole 25, ensuring the stable rotation operation of the connecting rod 47, the toothed discs 46 at both ends of the connecting rod 47 are meshed and connected with the transmission teeth 16 on the outer surface of the winding disk 12, thereby driving the toothed discs 46 to deflect, and the driving motor 32 is rotatably connected to one end of the first rotating shaft 11 through the transmission belt 33, thereby controlling the rotation operation of the first rotating shaft 11.

[0045] One end of the transmission shaft 42 of the present invention passes through the internal center of the reset torsion spring 35 and is rotatably connected to the side of the first connecting block 31, which can limit the rotation of the transmission shaft 42. One end of the reset torsion spring 35 is fixedly connected to the outer surface of one end of the transmission shaft 42, and can provide a reset power for the gear plate 46 after rotation. The middle part of the connecting frame 44 is slidably connected to the connecting plate 26 through the limiting slide 21, which can limit the lifting and lowering of the connecting frame 44. The bottom outer surface of the clamping block 224 is slidably connected to the outer surface of the metal bridge wire 13, which can tension and limit the sliding of the metal bridge wire 13. The middle part of the metal bridge wire 13 is slidably overlapped on the bottom center of the welding head 24 through the limiting groove 23, which can limit the sliding of the metal bridge wire 13 and prevent the metal bridge wire 13 from sliding off the tip of the welding head 24.

[0046] A welding method of a metal conductive bridge wire welding device, comprising:

[0047] Step 1: first install the winding reel 12 and the unwinding reel 14 on the outer surface of the first rotating shaft 11 and the second rotating shaft 15, and make the metal bridge wire 13 overlap inside the limiting groove 23, and make the limiting component 22 on one side slide and clamp on the outer surface of the metal bridge wire 13;

[0048] Step 2: Then use an external lifting device to drive the driving component 3 to descend as a whole, so that the metal bridge wire 13 inside the limiting groove 23 is close to the product to be welded, and at the same time, the welding head 24 is energized to transmit the high voltage current to the tip of the metal bridge wire 13, so that the metal bridge wire 13 is in contact with the product, thereby realizing the welding function;

[0049] Step three, after the metal bridge wire 13 is welded multiple times, it is necessary to control the driving motor 32 to rotate and drive the winding disk 12 to rotate to wind up the metal bridge wire 13. At the same time, the metal bridge wire 13 will slide at the bottom of the welding head 24 to change the welding position of the outer surface of the metal bridge wire 13. When the winding disk 12 rotates, it will drive the toothed disk 46 to rotate, and the toothed disk 46 will drive the connecting frame 44 to descend through the swing arm 43, and the connecting frame 44 will drive the cleaning wire 45 to approach the outer surface of the bottom of the welding head 24, so as to clean the welding slag on the outer surface of the welding head 24. At the same time, the clamping block 224 will limit the sliding metal bridge wire 13 to ensure that the metal bridge wire 13 is in a tensioned state and to ensure the stability of the welding at the bottom of the welding head 24.

[0050] Step 4: When the transmission teeth 16 on the outer surface of the winding disk 12 are separated from the outer surface of the toothed disk 46, the reset torsion spring 35 will drive the toothed disk 46 to reset and rotate, thereby driving the connecting frame 44 and the cleaning wire 45 to rise and reset, and then the welding head 24 can continue the welding work.

[0051] The working principle of the present invention is as follows: first, the winding disk 12 and the unwinding disk 14 are respectively sleeved on the outer surfaces of the first rotating shaft 11 and the second rotating shaft 15, so that the first rotating shaft 11 and the second rotating shaft 15 are clamped with the clamping block, and then one end of the metal bridge wire 13 on the outer surface of the unwinding disk 14 is pulled through the middle part of the limiting component 22 close to the side of the unwinding disk 14, and the metal bridge wire 13 is overlapped on the outer surface of the limiting groove 23, and then one end of the metal bridge wire 13 is fixedly connected to the outer surface of the winding disk 12, wherein the limiting component 22 close to the side of the winding disk 12 is in the state of the principle welding head 24, and does not contact the metal bridge wire 13, wherein the limiting component 22 close to the side of the unwinding disk 14 will make the internal clamping block 224 clamped on the outer surface of the metal bridge wire 13, which can limit the metal bridge wire 13 and ensure that the metal bridge wire 13 is in a tensioned state;

[0052] Then, the external lifting device is controlled to drive the driving component 3 to drop as a whole to adjust the welding position, so that the metal bridge wire 13 inside the limiting groove 23 approaches and contacts the weldment on the welding table, and at the same time, the tip of the welding head 24 contacts the weldment to be welded and applies a certain pressure, and then a large contact resistance is formed on the contact surface of the weldment through the low voltage and high current output by the welding transformer. When the current passes through, a large amount of heat will be generated at the contact point, so that the contact part of the metal bridge wire 13 and the connecting component is quickly heated to the melting point or plastic state. Under the action of heat, the metal atoms on the contact surface of the metal bridge wire 13 and the connecting component obtain enough energy, start to become active and diffuse and fuse with each other. When the welding current stops, the welding part is kept under pressure for a period of time to allow the fused metal to cool and solidify to form a firm welding point.

[0053] Among them, after the metal bridge wire 13 has been welded for many times, it is necessary to control the driving motor 32 to rotate and run, and drive the first rotating shaft 11 to rotate synchronously through the transmission belt 33, and the first rotating shaft 11 will drive the winding disk 12 to wind up the metal bridge wire 13. At the same time, the metal bridge wire 13 will slide at the bottom of the welding head 24, and change the welding position of the outer surface of the metal bridge wire 13. When the winding disk 12 rotates, it will drive the meshing connected toothed disk 46 to rotate through the perfect transmission teeth 16, and the rotation of the toothed disk 46 will drive the swing arm 43 to deflect and drive the connecting frame 44 to descend, and the connecting frame 44 will drive the bottom cleaning wire 45 to descend close to the bottom outer surface of the welding head 24 until the welding slag on the bottom outer surface of the welding head 24 is cleaned. At the same time, when the transmission teeth 16 on the outer surface of the winding disk 12 are separated from the outer surface of the toothed disk 46, the driven twisted The reset torsion spring 35 will drive the transmission shaft 42 to reset and rotate, so that the toothed disc 46 drives the connecting frame 44 to rise and reset through the swing arm 43, so that the cleaning wire 45 rises and moves away from the outer surface of the welding head 24, wherein, when the metal bridge wire 13 is pulled, the clamping block 224 will limit the sliding metal bridge wire 13, thereby ensuring that the metal bridge wire 13 is in a tensioned state, and ensuring the stability of the welding at the bottom end of the welding head 24; therefore, after the cleaning wire 45 rises and resets, the welding head 24 can continue to perform welding work, and finally, through the coordinated operation between the reeling and winding component 1, the conductive component 2, the driving component 3 and the cleaning component 4, the welding end loss of the welding head 24 can be quickly replaced and repaired, thereby ensuring the stability of the welding, and the welding slag on the outer surface of the welding head 24 can be self-cleaned to ensure the content quality and meet people's use needs.

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A metal conductive bridge wire welding device, comprising: A driving component (3), characterized in that a conductive component (2) is provided in the middle of one end of the driving component (3), and a retractable and unreeling component (1) is provided at one end of the driving component (3) and on both sides of the conductive component (2); The reeling and unreeling component (1) comprises a first rotating shaft (11) and a second rotating shaft (15); a reeling reel (12) is sleeved on the outer surface of one end of the first rotating shaft (11); a reeling reel (14) is sleeved on the outer surface of one end of the second rotating shaft (15); and metal bridge wires (13) are wound around the outer surfaces of the reeling reel (12) and the reeling reel (14); The conductive component (2) comprises a connecting plate (26), a welding head (24) is arranged at the bottom end of the connecting plate (26), a limiting groove (23) is provided at the center of the bottom end of the welding head (24), and a first limiting shaft hole (25) is provided on the outer surface of the connecting plate (26); The driving component (3) comprises a first connecting block (31) and a second connecting block (37), wherein the second connecting block (37) is fixedly connected to the middle outer surface of the first connecting block (31), a driving motor (32) is fixedly mounted on the side of the second connecting block (37), a transmission disc (34) is fixedly mounted on one end of the driving motor (32), a transmission belt (33) is sleeved on the outer surface of the transmission disc (34), and a second limiting shaft hole (36) is symmetrically provided at the bottom of the side of the first connecting block (31).

2. The metal conductive bridge wire welding device according to claim 1, characterized in that: A cleaning component (4) is arranged on the lower outer surface of the conductive component (2), and the cleaning component (4) comprises a connecting rod (47), both ends of the connecting rod (47) are fixedly connected with toothed discs (46), an eccentric shaft (41) is arranged on the central edge of the connecting rod (47), a swing arm (43) is rotatably sleeved on the outer surface of the eccentric shaft (41), the bottom end of the swing arm (43) is rotatably connected with a connecting frame (44), a cleaning wire (45) is symmetrically arranged on the bottom outer surface of the connecting frame (44), and a transmission shaft (42) is fixedly connected to the outer surface of one end of the eccentric shaft (41), and the transmission shaft (42) is aligned with the axis of the connecting rod (47).

3. The metal conductive bridge wire welding device according to claim 2, characterized in that: Transmission teeth (16) are evenly arranged around the periphery of the winding disk (12), a return torsion spring (35) is fixedly installed between the bottoms of the first connecting blocks (31), and a limited position slideway (21) is provided on the lower outer surface of the connecting plate (26).

4. The metal conductive bridge wire welding device according to claim 3, characterized in that: The conductive component (2) further comprises a limit assembly (22), wherein the limit assembly (22) is symmetrically rotatably connected to the bottom end of the connecting plate (26) and is located at the two side edges of the welding head (24), and both ends of the bottom surface of the connecting plate (26) are fixedly connected to magnetic suction brackets (27), and the limit assembly (22) comprises a limit block (222), and magnet sheets (221) are symmetrically arranged on the top of the limit block (222) and on both sides of the bottom of the connecting plate (26), and one end of the top of the limit block (222) is fixedly connected to a limit rotation shaft (225), and the inner two side surfaces of the limit block (222) are provided with receiving grooves (226), and a clamping block (224) is rotatably installed inside the receiving groove (226), and a tensioning spring (223) is fixedly connected to the outer surface of the bottom of the side surface of the clamping block (224).

5. The metal conductive bridge wire welding device according to claim 4, characterized in that: The outer surfaces of one end of the first rotating shaft (11) and the second rotating shaft (15) are both provided with a clamping block, and the winding reel (12) and the unwinding reel (14) are respectively clamped with the clamping block on the outer surfaces of the first rotating shaft (11) and the second rotating shaft (15).

6. The metal conductive bridge wire welding device according to claim 5, characterized in that: The first rotating shaft (11) and the second rotating shaft (15) are rotatably connected to the first connecting block (31) through the second limiting shaft hole (36); the connecting plate (26) is fixedly connected to the side center of the first connecting block (31); the connecting rod (47) is rotatably connected to the connecting plate (26) through the first limiting shaft hole (25); the toothed discs (46) at both ends of the connecting rod (47) are meshedly connected to the transmission teeth (16) on the outer surface of the winding disc (12); and the driving motor (32) is rotatably connected to one end of the first rotating shaft (11) through a transmission belt (33).

7. The metal conductive bridge wire welding device according to claim 6, characterized in that: One end of the transmission shaft (42) passes through the inner center of the reset torsion spring (35) and is rotatably connected to the side of the first connecting block (31); one end of the reset torsion spring (35) is fixedly connected to the outer surface of one end of the transmission shaft (42); the middle part of the connecting frame (44) is slidably connected to the connecting plate (26) through a limiting slideway (21); the bottom outer surface of the clamping block (224) is slidably connected to the outer surface of the metal bridge wire (13); the middle part of the metal bridge wire (13) is slidably overlapped on the bottom center of the welding head (24) through a limiting groove (23).

8. A welding method using a metal conductive bridge wire welding device, using the metal conductive bridge wire welding device as claimed in claim 7, characterized in that: include: Step 1: first install the winding reel (12) and the unwinding reel (14) on the outer surfaces of the first rotating shaft (11) and the second rotating shaft (15), and make the metal bridge wire (13) overlap inside the limiting groove (23), and make the single-side limiting component (22) slide and engage on the outer surface of the metal bridge wire (13); Step 2: Then use an external lifting device to drive the driving component (3) to descend as a whole, so that the metal bridge wire (13) inside the limiting groove (23) is close to the product to be welded, and at the same time, the welding head (24) is energized to transmit high voltage current to the tip of the metal bridge wire (13), so that the metal bridge wire (13) is in contact with the product, thereby realizing the welding function; Step 3: After the metal bridge wire (13) is welded multiple times, it is necessary to control the driving motor (32) to rotate and drive the winding disk (12) to rotate to wind up the metal bridge wire (13). At the same time, the metal bridge wire (13) will slide at the bottom of the welding head (24) to change the welding position of the outer surface of the metal bridge wire (13). When the winding disk (12) rotates, it will drive the toothed disk (46) to rotate. The toothed disk (46) will drive the connecting frame (44) to descend through the swing arm (43), and the connecting frame (44) will drive the cleaning wire (45) close to the outer surface of the bottom of the welding head (24), thereby cleaning the welding slag on the outer surface of the welding head (24). At the same time, the clamping block (224) will limit the sliding metal bridge wire (13) to ensure that the metal bridge wire (13) is in a tensioned state, thereby ensuring the stability of the welding at the bottom end of the welding head (24); Step 4: When the transmission teeth (16) on the outer surface of the winding disk (12) are separated from the outer surface of the toothed disk (46), the reset torsion spring (35) will drive the toothed disk (46) to reset and rotate, thereby driving the connecting frame (44) and the cleaning wire (45) to rise and reset, and then the welding head (24) can continue the welding work.

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