An automatic welding device for a foil winding machine

Abstract

This application relates to the field of metal welding technology and discloses an automatic welding device for a foil winding machine, including a support and a support mechanism. The support mechanism includes a rear support plate installed inside the support, a rotating shaft rotatably mounted inside the rear support plate, and a coil slidably mounted outside the rotating shaft. The welding mechanism includes a telescopic rod two installed on the top of the support, a movable plate installed at the telescopic end of the telescopic rod two, and a support column fixedly connected to the bottom of the movable plate. This device supports the guide plate through the surface of the coil, ensuring the guide plate remains horizontally aligned with the upper surface of the coil. A slanted groove on the right side of the guide plate guides the coil's lead-out portion into the guide plate's inner cavity. When the telescopic rod three and the pusher plate push the metal plate into the guide plate's inner cavity, welding is completed using the welding components. The entire process is highly automated with significantly improved accuracy, requiring no additional guidance and effectively enhancing the device's working efficiency.

Description

Technical Field

[0001] This application relates to the field of metal welding technology, and in particular to an automatic welding device for a foil winding machine. Background Technology

[0002] Foil winding machines are specialized equipment used for winding foil coils for transformers. Foil-wound coils are a type of layered coil, using thin and wide copper or aluminum foil as the conductive material. The windings formed after winding can be used in low-voltage, small-capacity transformers. After winding, foil-wound coils often need to be welded with metal conductive plates for connection. In existing technologies, the coil is usually led out and placed separately on a welding device, and pressure spot welding is used to complete the welding. However, since foil-wound coils are not circular, the led-out part will undulate with the overall coil during the lead-out process, which can easily affect the flatness of the coil lead-out part. Moreover, existing technologies cannot fully automate the coil lead-out and positioning processes, requiring operators to guide and operate the machine. The degree of automation is low, which seriously restricts the welding efficiency and welding quality of foil coils. The existing solutions are relatively simple: using a cylinder or hydraulic cylinder to drive a pressure plate assembly to press the coil lead-out part and forcibly fix the coil. This can easily cause the coil to be too rigid, which is not conducive to quickly returning to the correct position after welding and forming the same curvature as the overall coil, resulting in low work efficiency. Summary of the Invention

[0003] This application proposes an automatic welding device for foil winding machines, which has the advantages of high working efficiency and high reliability, in order to solve the problem of low working efficiency caused by low automation in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solution: an automatic welding device for a foil winding machine, including a support, and further comprising: A support mechanism includes a rear support plate installed inside a support, wherein a rotating shaft is rotatably mounted inside the rear support plate, and a coil is slidably mounted outside the rotating shaft. A welding mechanism includes a telescopic rod 2 installed on the top of a support. A movable plate is installed at the telescopic end of the telescopic rod 2. A support column is fixedly connected to the bottom of the movable plate. A support cylinder and a spring are movably sleeved on the outer surface of the support column. A guide plate is fixedly installed at the bottom of the support cylinder. A storage box and welding components are fixedly installed at the top of the guide plate. A material passage groove communicating with the support cylinder is opened at the top of the guide plate. The bottom of the guide plate is adapted to abut against the top of the coil. Multiple sets of metal plates are placed inside the storage box. A telescopic rod 3 is fixedly installed on the right side of the storage box. A pusher plate is fixedly installed at the telescopic end of the telescopic rod 3. This redesigned device significantly improves its automation level. To achieve this, the device suspends the support cylinder, guide plate, and welding assembly. The weight of these components ensures a proper fit between the bottom of the guide plate and the top of the coil. A support column is fixedly connected to the moving plate, and the support cylinder is fitted onto the outside of the support column. Springs provide elastic support for the support cylinder and guide plate, offsetting some of their weight. When the coil is driven to rotate by the motor and shaft, the coil surface supports the guide plate, ensuring it remains horizontally aligned with the coil's upper surface. A slanted groove on the right side of the guide plate guides the coil's lead-out portion into its inner cavity. When the telescopic rod and pusher plate push the metal plate into the guide plate's inner cavity, the welding assembly completes the welding process. The entire process is highly automated with significantly improved accuracy, requiring no additional guidance and effectively enhancing the device's efficiency.

[0005] Preferably, the support mechanism further includes a motor fixedly installed on the rear side of the rear support plate and a guide cylinder fixedly installed on the bottom inner side of the support. The telescopic end of the telescopic rod is fixedly installed with a front support plate located in front of the rotating shaft. A guide rod is fixedly connected to the bottom of the front support plate. The guide rod is adapted to be inserted into the inside of the guide cylinder. The front end of the rotating shaft is rotatably installed on the top of the front support plate.

[0006] Preferably, the welding assembly includes two sets of guide posts 2 fixedly installed on the top left side of the guide plate. A top plate is fixedly installed on the top of the guide posts 2, and a telescopic rod 4 is fixedly installed on the bottom of the top plate. Multiple sets of mounting plates are fixedly installed on the telescopic ends of the telescopic rod 4. Multiple sets of welding heads are fixedly installed on the bottom of the mounting plates. The welding heads are directly above the material feed chute. The mounting plates are adapted to fit onto the outer surface of the guide posts 2.

[0007] Preferably, the axial cross-section of the support column is T-shaped and is invertedly disposed inside the support cylinder, with both ends of the support cylinder being elastically connected to the support column and the support cylinder, respectively.

[0008] Preferably, the support columns are arranged in two symmetrical sets, the spring is compressed inside the support cylinder, and the axial cross-section of the spring is rectangular.

[0009] Preferably, a slot is provided at the bottom right side of the storage box, the pusher plate has an "L" shaped cross-section, and the left side of the pusher plate is adapted to be inserted into the slot.

[0010] Preferably, the guide plate has an inclined groove on its left side, and a support plate is fixedly installed at the bottom of the inner cavity of the guide plate. Both sides of the support plate have inclined surfaces.

[0011] Preferably, the thickness of the pusher plate is less than the thickness of the metal plate, and the width of the metal plate is less than the width of the feed groove.

[0012] Preferably, the top of the movable plate is fixedly connected to two sets of guide columns that are symmetrically distributed front and back, and the top of the guide columns extends upward to the top of the support.

[0013] The beneficial effects of this invention are as follows: 1. This device has been redesigned, significantly improving its automation level. To achieve this, the device suspends the support cylinder, guide plate, and welding assembly. The weight of the support cylinder, guide plate, and welding assembly maintains a proper fit between the bottom of the guide plate and the top of the coil. A support column is fixedly connected to the moving plate, and a support cylinder is fitted onto the outside of the support column. Springs provide elastic support for the support cylinder and guide plate as a whole, offsetting part of the weight of the support cylinder, guide plate, and welding assembly. When the coil is driven to rotate by the motor and shaft, the surface of the coil supports the guide plate, ensuring that the guide plate remains horizontally aligned with the upper surface of the coil. A slanted groove on the right side of the guide plate guides the coil lead-out portion into the inner cavity of the guide plate. When the telescopic rod and pusher plate push the metal plate into the inner cavity of the guide plate, the welding assembly completes the welding. The entire process is highly automated with significantly improved accuracy, requiring no additional guidance and effectively improving the device's working efficiency.

[0014] 2. Then, the device uses a storage bin to transfer and store metal plates, and automatically replenishes the inner cavity of the guide plate with the help of the telescopic rod three and the pusher plate. The support cylinder is located on the right side of the welding assembly. The telescopic rod three drives the pusher plate to push the metal plate located at the bottom of the inner wall of the storage bin to the inner wall of the guide plate. Multiple sets of metal plates can be pre-stored in the inner wall of the storage bin. The telescopic rod three can drive the pusher plate to move repeatedly and push the metal plate in the support cylinder into the inner wall of the guide plate, completing the preparation before welding. This design changes the design of feeding the metal plate from the front and rear sides of the device, which not only saves the space occupied by the device, but also improves the reliability and stability of the device during welding preparation.

[0015] 3. Finally, this device utilizes a support column inverted on top of the inner cavity of the support cylinder, and a spring to support the support cylinder and guide plate. The spring is compressed to generate an upward rebound force, which offsets part of the weight of the support cylinder, guide plate and welding components. This design makes the raising and lowering of the guide plate very flexible. The support force of the coil on the guide plate when rotating can be provided by the spring, reducing the rigid contact damage between the guide plate and the upper surface of the coil and improving the practicality of the device. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0017] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a front view diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the welding assembly and support mechanism of the present invention; Figure 3 This is a front sectional view of the overall structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the axial cross-section of the support column, support cylinder, and spring of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B; Figure 7 This is a schematic diagram showing the separation of the welding assembly of the present invention; Figure 8 This is a schematic diagram showing the separation of the support mechanism of the present invention.

[0018] The components are as follows: 1. Support; 2. Rear support plate; 3. Telescopic rod one; 4. Front support plate; 5. Rotating shaft; 6. Coil; 7. Guide cylinder; 8. Guide rod; 9. Motor; 10. Telescopic rod two; 11. Moving plate; 12. Guide column one; 13. Support column; 14. Support cylinder; 15. Spring; 16. Guide plate; 17. Inclined groove; 18. Storage box; 19. Telescopic rod three; 20. Push plate; 21. Guide column two; 22. Top plate; 23. Telescopic rod four; 24. Mounting plate; 25. Welding head; 26. Metal plate; 27. Material passage chute; 28. Support plate; 29. ​​Slot. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Please see Figures 1-8 This embodiment discloses an automatic welding device for a foil winding machine, including a support 1, and further comprising: The support mechanism includes a rear support plate 2 installed inside the support 1, a rotating shaft 5 rotatably mounted inside the rear support plate 2, and a coil 6 slidably mounted outside the rotating shaft 5. The welding mechanism includes a telescopic rod 10 installed on the top of the support 1. A movable plate 11 is installed at the telescopic end of the telescopic rod 10. A support column 13 is fixedly connected to the bottom of the movable plate 11. A support cylinder 14 and a spring 15 are movably sleeved on the outer surface of the support column 13. A guide plate 16 is fixedly installed at the bottom of the support cylinder 14. A storage box 18 and a welding assembly are fixedly installed at the top of the guide plate 16. A material passage 27 communicating with the support cylinder 14 is opened at the top of the guide plate 16. The bottom of the guide plate 16 is adapted to abut against the top of the coil 6. Multiple sets of metal plates 26 are placed inside the storage box 18. A telescopic rod 19 is fixedly installed on the right side of the storage box 18. A pusher plate 20 is fixedly installed at the telescopic end of the telescopic rod 19. This device has been redesigned, significantly improving its automation level. To achieve this, the device suspends the support cylinder 14, guide plate 16, and welding assembly. The weight of the support cylinder 14, guide plate 16, and welding assembly maintains a proper fit between the bottom of the guide plate 16 and the top of the coil 6. A support column 13 is fixedly connected to the moving plate 11. The support cylinder 14 is fitted onto the outside of the support column 13, and a spring 15 provides elastic support for the support cylinder 14 and guide plate 16 as a whole, offsetting some of the impact of the support cylinder 14 and guide plate 16. With the weight of the welding components, when the coil 6 is driven to rotate by the motor 9 and the rotating shaft 5, the surface of the coil 6 supports the guide plate 16, so that the guide plate 16 can always be horizontally distributed with the upper surface of the coil 6. The lead-out part of the coil 6 is guided to the inner cavity of the guide plate 16 through the inclined groove 17 opened on the right side of the guide plate 16. When the telescopic rod 19 and the pusher plate 20 push the metal plate 26 into the inner cavity of the guide plate 16, the welding is completed by the welding components. The whole process is highly automated and the accuracy is significantly improved. No additional guidance is required, which effectively improves the working efficiency of the device.

[0021] Then, the device uses a storage box 18 to transfer and store the metal plate 26, and automatically replenishes the inner cavity of the guide plate 16 with the cooperation of the telescopic rod 19 and the pusher plate 20. The support cylinder 14 is located on the right side of the welding assembly. The telescopic rod 19 drives the pusher plate 20 to push the metal plate 26 located at the bottom of the inner wall of the storage box 18 into the inner wall of the guide plate 16. Multiple sets of metal plates 26 can be pre-stored in the inner wall of the storage box 18. The telescopic rod 19 can drive the pusher plate 20 to move repeatedly and push the metal plate 26 in the support cylinder 14 into the inner wall of the guide plate 16 to complete the preparation before welding. This design changes the design of feeding the metal plate 26 from the front and rear sides of the device, which not only saves the space occupied by the device, but also improves the reliability and stability of the device during welding preparation.

[0022] Finally, the device utilizes the support column 13 to be inverted and placed on the top of the inner cavity of the support cylinder 14, and the support cylinder 14 and guide plate 16 are supported by the spring 15. The spring 15 is compressed to generate an upward rebound force, which offsets part of the weight of the support cylinder 14, guide plate 16 and welding assembly. This design makes the lifting and lowering of the guide plate 16 very flexible. When the coil 6 rotates, the supporting force on the guide plate 16 can be provided by the spring 15, which reduces the rigid contact damage between the guide plate 16 and the upper surface of the coil 6 and improves the practicality of the device.

[0023] In this embodiment, the support mechanism also includes a motor 9 fixedly installed on the rear side of the rear support plate 2 and a guide cylinder 7 fixedly installed on the bottom inner side of the support 1. The telescopic end of the telescopic rod 3 is fixedly installed with a front support plate 4 located in front of the rotating shaft 5. A guide rod 8 is fixedly connected to the bottom of the front support plate 4. The guide rod 8 is adapted to be inserted into the inside of the guide cylinder 7. The front end of the rotating shaft 5 is rotatably installed on the top of the front support plate 4. like Figure 1 , Figure 2 As shown, coil 6 can be smoothly fitted onto the outside of rotating shaft 5 when telescopic rod 3 drives front support plate 4 to move downward to the lowest point. Subsequently, telescopic rod 3 drives front support plate 4 to return to its original position and provides stable rotational support for rotating shaft 5.

[0024] In this embodiment, the welding assembly includes two sets of guide posts 21 fixedly installed on the top left side of the guide plate 16. A top plate 22 is fixedly installed on the top of the guide posts 21, and a telescopic rod 23 is fixedly installed on the bottom of the top plate 22. Multiple sets of mounting plates 24 are fixedly installed on the telescopic ends of the telescopic rod 23, and multiple sets of welding heads 25 are fixedly installed on the bottom of the mounting plates 24. The welding heads 25 are directly above the material feed trough 27, and the mounting plates 24 are adapted to be connected to the outer surface of the guide posts 21. like Figure 2 , Figure 3 As shown, the top opening on the left side of the storage box 18 can accommodate multiple sets of welding heads 25 located at the bottom of the mounting plate 24. The welding heads 25 are set in multiple sets with linear equidistant spacing, and can complete the pressing welding of the coil 6 and the metal plate 26 in one go when the telescopic rod four 23 drives the mounting plate 24 and the welding heads 25 to move downward. The guide post two 21 can provide a guiding function for the mounting plate 24 and the welding heads 25.

[0025] In this embodiment, the axial cross-section of the support column 13 is "T" shaped and is invertedly disposed inside the support cylinder 14. The two ends of the support cylinder 14 are elastically connected to the support cylinder 14 and the support column 13, respectively. like Figure 6As shown, the support column 13 is inverted and placed on the top of the inner cavity of the support cylinder 14. The support cylinder 14 and the guide plate 16 are supported by the spring 15. The spring 15 is compressed to generate an upward rebound force, which offsets part of the weight of the support cylinder 14, the guide plate 16 and the welding assembly. This design makes the lifting and lowering of the guide plate 16 very flexible. When the coil 6 rotates, the supporting force on the guide plate 16 can be provided by the spring 15, which reduces the rigid contact damage between the guide plate 16 and the upper surface of the coil 6.

[0026] In this embodiment, the support columns 13 are set in two sets symmetrically arranged front and back, and the spring 15 is compressed and set inside the support cylinder 14. The axial cross-section of the spring 15 is rectangular. like Figure 5 , Figure 6 As shown, the rebound force generated by the spring 15 can offset part of the gravity from the support cylinder 14, the guide plate 16 and the welding assembly, and the axial cross-section of the spring 15 is rectangular. This design ensures that the spring 15 will not displace when compressed to its limit. The whole can be regarded as a rigid component, and it assists the telescopic rod 10 and the moving plate 11 in driving its movement upward.

[0027] In this embodiment, a slot 29 is provided at the bottom right side of the storage box 18, and the cross-sectional shape of the pusher plate 20 is "L" shaped. The left side of the pusher plate 20 is adapted to be inserted into the inside of the slot 29. like Figure 4 As shown, the left side of the pusher plate 20 is adapted to be inserted into the inside of the slot 29. When the telescopic rod 3 19 drives the pusher plate 20 to move to the left, the pusher plate 20 can push the metal plate 26 to move to the left and enter the inner cavity of the guide plate 16 to complete the welding preparation.

[0028] In this embodiment, a sloping groove 17 is provided on the left side of the guide plate 16, and a support plate 28 is fixedly installed at the bottom of the inner cavity of the guide plate 16. Both the left and right sides of the support plate 28 are provided with sloping surfaces. like Figure 4 As shown, the design of the inclined slot 17 can easily guide the lead-out portion of the coil 6 into the inner cavity of the guide plate 16, while the support plate 28 supports the lead-out portion of the coil 6, thereby enabling the coil 6 to be positioned above the metal plate 26 to complete the preparation before welding.

[0029] In this embodiment, the thickness of the pusher plate 20 is less than the thickness of the metal plate 26, and the width of the metal plate 26 is less than the width of the feed groove 27. like Figure 4 As shown, the pusher plate 20 is used to push the metal plate 26 into the feed trough 27 and the guide plate 16. The metal plate 26 needs to pass through the feed trough 27 to enter the guide plate 16.

[0030] In this embodiment, the top of the movable plate 11 is fixedly connected to two sets of guide columns 12 that are symmetrically distributed front and back, and the top of the guide columns 12 are adapted to extend upward to the top of the upper end of the support 1. The movable plate 11 moves up and down under the drive of the telescopic rod 10 and provides rigid support for the support column 13. Its guiding function is provided by the guide column 12.

[0031] Working principle: When this device is in operation: First, activate telescopic rod 3, which moves the front support plate 4 and guide rod 8 downward to install coil 6 on the outer surface of rotating shaft 5. Then, activate telescopic rod 3, which resets the front support plate 4, confining coil 6 between the front support plate 4 and the rear support plate 2. Activate telescopic rod 10, which moves moving plate 11, support column 13, support cylinder 14 and guide plate 16 downward, so that the bottom of guide plate 16 abuts against the top of coil 6. Then, start motor 9, which will drive shaft 5 and coil 6 to rotate counterclockwise, as follows. Figure 1 As shown, since the bottom of the guide plate 16 abuts against the top of the coil 6, the coil 6 exerts an upward reaction force on the guide plate 16 when it rotates. This force pushes the guide plate 16 upward and drives the support cylinder 14, the storage box 18, and the welding assembly to move upward, as shown. Figure 5 As shown, when the support cylinder 14 moves upward, the compression of the spring 15 decreases, and the upward rebound support force provided by the spring 15 to the support cylinder 14 and the guide plate 16 decreases. The reduced support force is borne by the rotating shaft 5 and the coil 6. Then, as Figure 3 As shown, the telescopic rod 19 is activated and pushes the pusher plate 20 to the left into the slot 29, pushing the metal plate 26 located at the bottom to the left into the feed chute 27, and it falls to the left side of the bottom of the guide plate 16. The lead-out part of the coil 6 enters the inner cavity of the guide plate 16 under the guidance of the inclined groove 17 opened on the right side of the guide plate 16, and extends deep into the inner cavity of the guide plate 16. At this time, the motor 9 is stopped, the telescopic rod 23 is activated and drives the mounting plate 24 and the welding head 25 downward, so that the welding head 25 presses the lead-out part of the coil 6 and the metal plate 26 located in the inner cavity of the guide plate 16 together for welding. After the welding is completed, the telescopic rod 23 drives the welding head 25 to reset, reverses the motor 9, and drives the coil 6 and the metal plate 26 to leave the inner cavity of the guide plate 16.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic welding device for a foil winding machine, comprising a support (1), characterized in that, Also includes: The support mechanism includes a rear support plate (2) installed inside the support (1), a rotating shaft (5) is rotatably installed inside the rear support plate (2), and a coil (6) is slidably installed on the outside of the rotating shaft (5). The welding mechanism includes a telescopic rod two (10) installed on the top of the support (1). A movable plate (11) is installed at the telescopic end of the telescopic rod two (10). A support column (13) is fixedly connected to the bottom of the movable plate (11). A support cylinder (14) and a spring (15) are movably sleeved on the outer surface of the support column (13). A guide plate (16) is fixedly installed at the bottom of the support cylinder (14). A storage box (18) and a welding assembly are fixedly installed on the top of the guide plate (16). A material passage groove (27) communicating with the support cylinder (14) is opened on the top of the guide plate (16). The bottom of the guide plate (16) is adapted to abut against the top of the coil (6). Multiple sets of metal plates (26) are placed inside the storage box (18). A telescopic rod three (19) is fixedly installed on the right side of the storage box (18). A pusher plate (20) is fixedly installed at the telescopic end of the telescopic rod three (19).

2. The automatic welding device for a foil winding machine according to claim 1, characterized in that, The support mechanism also includes a motor (9) fixedly installed on the rear side of the rear support plate (2) and a guide cylinder (7) fixedly installed on the bottom of the inner side of the support (1). The telescopic end of the telescopic rod (3) is fixedly installed with a front support plate (4) located in front of the rotating shaft (5). The bottom of the front support plate (4) is fixedly connected with a guide rod (8). The guide rod (8) is adapted to be inserted into the inside of the guide cylinder (7). The front end of the rotating shaft (5) is rotatably installed on the top of the front support plate (4).

3. The automatic welding device for a foil winding machine according to claim 2, characterized in that, The welding assembly includes two sets of guide posts (21) fixedly installed on the top left side of the guide plate (16). A top plate (22) is fixedly installed on the top of the guide posts (21). A telescopic rod (23) is fixedly installed on the bottom of the top plate (22). Multiple sets of mounting plates (24) are fixedly installed on the telescopic ends of the telescopic rod (23). Multiple sets of welding heads (25) are fixedly installed on the bottom of the mounting plate (24). The welding heads (25) are directly above the material feed trough (27). The mounting plate (24) is adapted to fit the outer surface of the guide posts (21).

4. The automatic welding device for a foil winding machine according to claim 3, characterized in that, The axial section of the support column (13) is "T" shaped and is inverted inside the support cylinder (14). The two ends of the support cylinder (14) are elastically connected to the support cylinder (14) and the support column (13) respectively.

5. The automatic welding device for a foil winding machine according to claim 4, characterized in that, The support column (13) is set in two sets symmetrically arranged front and back, and the spring (15) is compressed inside the support cylinder (14). The axial cross-section of the spring (15) is rectangular.

6. The automatic welding device for a foil winding machine according to claim 5, characterized in that, The bottom right side of the storage box (18) is provided with a slot (29), and the cross-sectional shape of the pusher plate (20) is "L" shaped. The left side of the pusher plate (20) is adapted to be inserted into the inside of the slot (29).

7. An automatic welding device for a foil winding machine according to claim 6, characterized in that, The guide plate (16) has a sloping groove (17) on its left side, and a support plate (28) is fixedly installed at the bottom of the inner cavity of the guide plate (16). The support plate (28) has sloping surfaces on both the left and right sides.

8. An automatic welding device for a foil winding machine according to claim 7, characterized in that, The thickness of the pusher plate (20) is less than the thickness of the metal plate (26), and the width of the metal plate (26) is less than the width of the feed groove (27).

9. An automatic welding device for a foil winding machine according to claim 8, characterized in that, The top of the movable plate (11) is fixedly connected to two sets of guide columns (12) that are symmetrically distributed front and back. The top of the guide column (12) is adapted to extend upward to the top of the support (1).

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