An automatic soldering device for electromagnetic coil leads

Abstract

This invention relates to the field of welding technology, specifically to an automatic welding device for electromagnetic coil leads. It includes a base and two welding electrodes mounted on the base, and further comprises: a rectangular box mounted on the base for stacking metal sheets; a feeding assembly mounted on the base and connected to the rectangular box for pushing the metal sheets out of the rectangular box onto the electrodes; a rectangular frame mounted on the base for mounting the coil; and a pushing assembly mounted on the base and connected to the rectangular frame for moving and rotating the rectangular frame to continuously weld the leads on the coil. This device allows multiple leads of the coil to be aligned sequentially with the welding electrodes simply by pushing and pulling a handle, making it simple and convenient. The feeding assembly automatically replenishes the metal sheets, making it easy to use. Rubber wheels automatically press down on the metal sheets to ensure accurate welding, eliminating the need for manual alignment and preventing accidental injury to workers.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to an automatic welding device for electromagnetic coil leads. Background Technology

[0002] In the traditional process of soldering the pins of electromagnetic coils, the main method is to use an electric welding machine. A spot welding machine is a mechanical welding device that uses the principle of double-sided double-point overcurrent welding. When working, the two electrodes press the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode to the other electrode, it forms an instantaneous heat fusion at the two contact resistance points. The welding current also flows instantaneously from the other electrode along the two workpieces to this electrode to form a circuit, without damaging the internal structure of the workpiece being welded.

[0003] However, the current method of soldering electromagnetic coil pins is relatively cumbersome and inefficient. Operators must first carefully place the coil pins on the electrodes, then precisely place a metal plate on the pins. This step is a significant test of the operator's manual skills and patience. Finally, once everything is ready, the soldering equipment is started. During this process, the overlap between the pins and the metal plate needs to be manually and meticulously corrected and maintained by the operator. This is not only time-consuming and labor-intensive, but also significantly affects the accuracy and efficiency of the soldering. More importantly, at the moment when pressure is applied to the electrodes and current flows through the contact surface and its surrounding area, generating resistive heat, improper operation or inadequate protective measures can easily cause accidental injury to the operator's hands due to the combined effects of high temperature and current. Therefore, we propose an automatic electromagnetic coil pin soldering device. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides an automatic welding device for electromagnetic coil leads, comprising a base and two welding electrodes disposed on the base, and further comprising: A rectangular box, set on the base, is used to stack metal sheets; The feeding assembly, mounted on the base and connected to the rectangular box, is used to push the metal sheet out of the rectangular box onto the electrode; A rectangular frame, set on the base, is used to mount the coil; A pusher assembly, mounted on a base and connected to a rectangular frame, is used to move and rotate the rectangular frame to continuously weld pins onto the coil.

[0005] In some embodiments, the pushing component includes a U-shaped frame disposed at the bottom end of a rectangular frame, a mounting plate fixedly connected to the base, and a slide rod fixedly connected to the mounting plate, one end of the slide rod slidingly passing through the U-shaped frame to guide and limit the movement of the U-shaped frame; Furthermore, a sliding plate is provided on the base, and a handle is fixedly connected to one end of the sliding plate for pushing the sliding plate to move. A cylindrical protrusion is provided at the bottom end of the U-shaped frame, and a guide groove is provided on the sliding plate. One end of the cylindrical protrusion is located in the guide groove. When the sliding plate is moved, the guide groove is used to drive the U-shaped frame to move. A hollow cylinder is fixedly connected to one side of the rectangular frame. A cylinder is fixedly connected to the mounting frame (42). One end of the cylinder is located inside the hollow cylinder and is slidably connected to it. The hollow cylinder slides through one end of the U-shaped frame. A shaft is fixedly connected to one side of the rectangular frame. The shaft is rotatably connected to the other end of the U-shaped frame. A cylindrical protrusion is provided on the hollow cylinder. A guide groove is provided on the cylinder. One end of the cylindrical protrusion is located inside the guide groove. When the rectangular frame is moved, the guide groove is used to drive the rectangular frame to rotate.

[0006] In some embodiments, the guide groove includes an inclined slide groove formed on the sliding plate, one end of the cylindrical protrusion is located in the inclined slide groove and is slidably connected to its inner wall, and a T-shaped protrusion is fixedly connected to the bottom end of the sliding plate. A T-shaped groove is formed on the base, and one end of the T-shaped protrusion is located in the T-shaped groove for guiding and limiting the movement of the sliding plate.

[0007] In some embodiments, the guide groove second includes a straight sliding groove first formed on a cylinder, one end of the cylindrical protrusion second is located in the straight sliding groove first and is slidably connected to its inner wall, and a spiral groove first is formed on the cylinder that communicates with the straight sliding groove first, which is used to drive the rectangular frame to rotate when the cylindrical protrusion second slides along the spiral groove first, so as to switch the coil welding position. Furthermore, a hollow tube is fixedly connected to the hollow cylinder. One end of the cylindrical protrusion is located inside the hollow tube and is fixedly connected to a spring. One end of the spring is fixed to the inner wall of the hollow tube. A straight sliding groove is provided on the cylinder, which is connected to the spiral groove. The straight sliding groove is designed to be deeper than the spiral groove. A spiral groove 2 is provided on the cylinder. The two ends of the spiral groove 2 are respectively connected to the straight sliding groove 1 and the straight sliding groove 2. The straight sliding groove 1 is designed to be deeper than the spiral groove 2. The inner walls of the straight sliding groove 1 and the straight sliding groove 2 are provided with inclined surfaces.

[0008] In some embodiments, the feeding assembly includes a support frame fixedly connected to the base, a rectangular box fixed to the support frame, a push plate slidably connected inside the rectangular box, an electric push rod fixedly connected to the rectangular box, and an extended end of the electric push rod fixed to the push plate for driving the push plate to move and push out the metal sheet.

[0009] In some embodiments, the push plate adopts a stepped design to support the metal sheet; Furthermore, a second shaft is fixedly connected to one side of the rectangular box, and a deflection plate is rotatably connected to the second shaft. A rubber wheel is rotatably connected to one end of the deflection plate via a rotating shaft. A torsion spring is sleeved on the second shaft, and both ends of the torsion spring are fixed to the second shaft and the deflection plate respectively, in order to provide downward pressure to the rubber wheel to fix the metal sheet. A linkage is provided between the push plate and the deflection plate to drive the deflection plate to deflect when the push plate is retracted, so as to lift the rubber wheel.

[0010] In some embodiments, the linkage includes a shaft three fixedly connected to the deflection plate, an L-shaped plate slidably connected to the side wall of the rectangular box, a guide groove being provided at one end of the L-shaped plate, and one end of the shaft three being located in the guide groove and slidably connected to its inner wall. Furthermore, a shaft four is fixedly connected to one end of the L-shaped plate, and a movable plate is fixedly connected to the bottom end of the push plate. An inclined sliding groove two is provided on the movable plate.

[0011] In some embodiments, a hollow conduit is fixedly connected to the U-shaped frame, and a cylindrical protrusion is located inside the hollow conduit and fixedly connected to a spring. An inclined slide groove three is provided on the sliding plate, which communicates with the inclined slide groove one. An inclined slide groove four is provided on the sliding plate. The two ends of the inclined slide groove four are respectively connected to the inclined slide groove one and the inclined slide groove three. The inclined slide groove four is designed to be deeper than the inclined slide groove three. The inclined slide groove one is designed to be deeper than the inclined slide groove four. An inclined surface is also provided inside the inclined slide groove one and the inclined slide groove four.

[0012] In some embodiments, a locking pin is slidably connected inside the movable plate. One end of the locking pin has an arc-shaped design and a spring is fixedly connected to one end of the locking pin. The base has multiple slots evenly spaced at equal intervals for temporarily fixing the sliding plate in cooperation with the locking pin.

[0013] In some embodiments, both ends of the rubber wheel are fixedly connected to limiting circular plates.

[0014] This invention has at least the following beneficial effects: This automatic electromagnetic coil pin welding equipment integrates a feeding component, a pushing component, and a linkage mechanism to achieve automatic feeding of metal sheets, precise welding of coil pins at multiple positions, and automatic avoidance after welding. In actual welding, all welding operations can be completed simply by pushing and pulling the handle, which significantly improves welding efficiency and safety. At the same time, the spring reset and inclined guide mechanism ensure welding accuracy and avoid the risk of damage caused by manual intervention. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 For the present invention Figure 1 Another structural diagram; Figure 3 For the present invention Figure 2 Another structural diagram; Figure 4 For the present invention Figure 3 Schematic diagram of the structure of area A in the middle; Figure 5 For the present invention Figure 3 Schematic diagram of partial cross-section; Figure 6 For the present invention Figure 5 Schematic diagram of partial cross-section; Figure 7 For the present invention Figure 6 Schematic diagram of partial cross-section; Figure 8 For the present invention Figure 7 Schematic diagram of the structure of Zone B; Figure 9 This is a schematic diagram of the structure of the sliding plate of the present invention; Figure 10 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0016] In the diagram: 1-Base; 11-Welding electrode; 12-Rectangular box; 2-Feeding assembly; 3-Rectangular frame; 4-Pushing assembly; 41-U-shaped frame; 42-Mounting plate; 43-Slide rod; 44-Sliding plate; 45-Handle; 46-Cylindrical protrusion one; 47-Guide groove one; 48-Hollow cylinder; 49-Cylinder; 51-Shaft one; 52-Cylindrical protrusion two; 53-Guide groove two; 54-Slanted slide groove one; 55-T-shaped protrusion; 56-T-shaped groove; 57-Straight slide groove one; 58-Spiral groove one; 59-Hollow tube; 61-Spring Spring 1; 62-Straight Slide Groove 2; 63-Helical Slide Groove 2; 64-Inclined Surface; 65-Support Frame; 66-Push Plate; 67-Electric Push Rod; 68-Shaft 2; 69-Deflection Plate; 71-Rubber Wheel; 72-Torsion Spring; 73-Linkage Component; 74-Shaft 3; 75-L-Shaped Plate; 76-Guide Groove; 77-Shaft 4; 78-Moving Plate; 81-Inclined Slide Groove 2; 83-Hollow Guide; 84-Spring 2; 85-Inclined Slide Groove 3; 86-Inclined Slide Groove 4; 87-Clamping Pin; 88-Spring 3; 89-Limiting Round Plate; 91-Clamping Groove. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figures 1-9 The present invention provides a technical solution: an automatic welding device for electromagnetic coil leads, comprising a base 1 and two welding electrodes 11 disposed on the base 1, and further comprising: A rectangular box 12 is set on the base 1 for stacking metal sheets; The feeding assembly 2 is set on the base 1 and connected to the rectangular box 12, and is used to push the metal sheet out of the rectangular box 12 onto the electrode; Rectangular frame 3, set on base 1, is used to mount the coil; Push component 4, set on base 1 and connected to rectangular frame 3, is used to drive rectangular frame 3 to move and flip to continuously weld pins on coil; Specifically, this device can drive multiple pins of the coil to align sequentially with the welding electrode 11 simply by pushing and pulling the handle 45, which is quite simple and convenient; Meanwhile, this device uses the feeding component 2 to automatically replenish the metal sheets, which is quite convenient to use; At the same time, the rubber wheel 71 automatically presses down on the metal sheet to ensure accurate welding, while eliminating the need for manual alignment by staff and avoiding accidental injury to staff.

[0019] The pushing component 4 includes a U-shaped frame 41 set at the bottom of the rectangular frame 3, a mounting plate 42 fixedly connected to the base 1, a sliding rod 43 fixedly connected to the mounting plate 42, one end of the sliding rod 43 sliding through the U-shaped frame 41 to guide and limit the movement of the U-shaped frame 41; Furthermore, a sliding plate 44 is provided on the base 1, and a handle 45 is fixedly connected to one end of the sliding plate 44 for pushing the sliding plate 44 to move. A cylindrical protrusion 46 is provided at the bottom of the U-shaped frame 41, and a guide groove 47 is provided on the sliding plate 44. One end of the cylindrical protrusion 46 is located in the guide groove 47. When the sliding plate 44 is moved, the guide groove 47 is used to drive the U-shaped frame 41 to move. A hollow cylinder 48 is fixedly connected to one side of the rectangular frame 3. A cylinder 49 is fixedly connected to the mounting plate (42). One end of the cylinder 49 is located inside the hollow cylinder 48 and is slidably connected to it. The hollow cylinder 48 slides through one end of the U-shaped frame 41. A shaft 51 is fixedly connected to one side of the rectangular frame 3. The shaft 51 is rotatably connected to the other end of the U-shaped frame 41 through a bearing. A cylindrical protrusion 52 is provided on the hollow cylinder 48. A guide groove 53 is provided on the cylinder 49. One end of the cylindrical protrusion 52 is located inside the guide groove 53. When the rectangular frame 3 is moved, the guide groove 53 is used to drive the rectangular frame 3 to rotate.

[0020] The guide groove 47 includes an inclined slide groove 54 formed on the sliding plate 44. One end of the cylindrical protrusion 46 is located in the inclined slide groove 54 and is slidably connected to its inner wall. A T-shaped protrusion 55 is fixedly connected to the bottom end of the sliding plate 44. A T-shaped groove 56 is formed on the base 1. One end of the T-shaped protrusion 55 is located in the T-shaped groove 56, which is used to guide and limit the movement of the sliding plate 44.

[0021] The guide groove 53 includes a straight slide groove 57 opened on the cylinder 49. One end of the cylindrical protrusion 52 is located in the straight slide groove 57 and is slidably connected to its inner wall. A spiral groove 58 is opened on the cylinder 49 and communicates with the straight slide groove 57. It is used to drive the rectangular frame 3 to rotate when the cylindrical protrusion 52 slides along the spiral groove 58, so as to switch the coil welding position. Furthermore, a hollow tube 59 is fixedly connected to the hollow cylinder 48. One end of the cylindrical protrusion 52 is located inside the hollow tube 59 and is fixedly connected to a spring 61. The cylindrical protrusion 52 is slidably connected to the inner wall of the hollow tube 59, and one end of the spring 61 is fixedly connected to the inner wall of the hollow tube 59. A straight sliding groove 62 is opened on the cylinder 49, which is connected to the spiral groove 58. The straight sliding groove 62 is designed to be deeper than the spiral groove 58. A spiral groove 2 63 is provided on the cylinder 49. The two ends of the spiral groove 2 63 are respectively connected to the straight slide groove 1 57 and the straight slide groove 2 62. The straight slide groove 1 57 is designed to be deeper than the spiral groove 2 63. The inner walls of the straight slide groove 1 57 and the straight slide groove 2 62 are provided with inclined surfaces 64. Specifically, the operator pushes handle 45 to move sliding plate 44, which in turn uses inclined slide groove 54 to push cylindrical protrusion 52, thereby moving U-shaped frame 41 and rectangular frame 3. During the movement of rectangular frame 3, cylindrical protrusion 52 on hollow cylinder 48 first slides along straight slide groove 57 and passes through inclined surface 64 within straight slide groove 57, causing cylindrical protrusion 52 to move relative to hollow cylinder 48 and retract to one end, while compressing spring 61. In this process, the coil is used to switch the multiple pins on it to align with welding electrode 11 in sequence. Continuing to move U-shaped frame 41, rectangular frame 3 is disengaged from welding electrode 11, while cylindrical protrusion 52 slides along spiral groove 58, thereby moving... The rectangular frame 3 and the coil rotate 90 degrees to switch the welding position. At the same time, the cylindrical protrusion 52 is reset by the spring 61 and driven to embed itself into the straight slide groove 62. At this time, the U-shaped frame is pulled to move the pin on the coil to the welding electrode 11 and continue welding. When the electrode is completely welded, the U-shaped frame is pulled to reset, and the cylindrical protrusion 52 slides along the straight slide groove 62 and the spiral groove 63 to drive the rectangular box 12 to deflect and reset. During this process, the cylindrical protrusion 52 slides along the inclined surface 64 in the straight slide groove 62, and the spring 61 is compressed. When the cylindrical protrusion 52 is aligned with the straight slide groove 57, the spring 61 resets again and drives the cylindrical protrusion 52 to embed itself into the straight slide groove 57, completing the reset operation.

[0022] The feeding assembly 2 includes a support frame 65 fixedly connected to the base 1, a rectangular box 12 fixedly connected to the support frame 65, a push plate 66 slidably connected inside the rectangular box 12, and an electric push rod 67 fixedly connected to the rectangular box 12. The extended end of the electric push rod 67 is fixed to the push plate 66 and is used to drive the push plate 66 to move and push out the metal sheet.

[0023] The push plate 66 features a stepped design to support the metal sheet; A shaft 68 is fixedly connected to one side of the rectangular box 12. A deflection plate 69 is rotatably connected to the shaft 68 via a bearing. A rubber wheel 71 is rotatably connected to one end of the deflection plate 69 via a rotating shaft. A torsion spring 72 is sleeved on the shaft 68, and both ends of the torsion spring 72 are fixed to the shaft 68 and the deflection plate 69 respectively, which is used to provide downward pressure to the rubber wheel 71 to fix the metal sheet. A linkage 73 is provided between the push plate 66 and the deflection plate 69, which is used to drive the deflection plate 69 to deflect when the push plate 66 is retracted, so as to lift the rubber wheel 71 to avoid the welded coil.

[0024] Linkage component 73 includes shaft 74 fixedly connected to deflection plate 69, L-shaped plate 75 slidably connected to the side wall of rectangular box 12, guide groove 76 opened at one end of L-shaped plate 75, and one end of shaft 74 located in guide groove 76 and slidably connected to its inner wall. Furthermore, a shaft 77 is fixedly connected to one end of the L-shaped plate 75, and a movable plate 78 is fixedly connected to the bottom end of the push plate 66. An inclined sliding groove 81 is provided on the movable plate 78. Specifically, after the metal sheet is welded, the electric push rod 67 is retracted, which moves the moving plate 78 and causes the shaft 77 to be embedded in the inclined slide groove 81. The inclined slide groove 81 then pushes the shaft 77 to move, thereby moving the L-shaped plate 75, which in turn causes the deflection plate 69 to deflect, thereby causing the rubber wheel 71 to deflect and lift to avoid the obstacle.

[0025] A hollow guide tube 83 is fixedly connected to the U-shaped frame 41. A cylindrical protrusion 46 is located inside the hollow guide tube 83 and is fixedly connected to a spring 84. One end of the spring 84 is fixed to the inner wall of the hollow guide tube 83. A sliding plate 44 is provided with a sliding groove 3 85 that communicates with a sliding groove 1 54. A sliding groove 46 is provided on the sliding plate 44. The two ends of the sliding groove 46 communicate with the sliding groove 1 54 and the sliding groove 3 85 respectively. The sliding groove 46 is designed to be deeper than the sliding groove 3 85. The sliding groove 1 54 is designed to be deeper than the sliding groove 4 86. The sliding groove 1 54 and the sliding groove 4 86 are also provided with inclined surfaces 64. Specifically, the operator only needs to push and pull to complete the welding operation. Specifically, pushing the sliding plate 44 causes the cylindrical protrusion 46 to slide along the inclined groove 54. The cylindrical protrusion 46 moves using the inclined surface 64 while simultaneously compressing the spring 84. During this process, the rectangular frame 3 first moves outward and deflects to switch the coil pins. Then, the cylindrical protrusion 46 slides along the inclined groove 85 into the inclined groove 86, while the spring 84 resets, causing the cylindrical protrusion 46 to embed into the inclined groove 86. In the middle, the rectangular frame 3 is moved inward to continue welding, and then the entire welding operation of the coil is completed in the push operation. Then, the arc plate is pulled, so that the cylindrical protrusion 46 is moved by the inclined slide groove 86. At the same time, the cylindrical protrusion 46 moves along the inclined surface 64 to compress the spring 84. When the cylindrical protrusion 46 is aligned with the inclined slide groove 54, the spring 84 is used to reset and drive the cylindrical protrusion 46 to embed into the inclined slide groove 54, so that the cylindrical protrusion 46 and the rectangular frame 3 are reset.

[0026] The movable plate 78 is slidably connected with a locking pin 87. One end of the locking pin 87 is arc-shaped and a spring 88 is fixedly connected to the other end of the locking pin 87. Multiple slots 91 are evenly spaced on the base 1 to cooperate with the locking pin 87 to temporarily fix the sliding plate 44, thereby improving the welding accuracy.

[0027] Example 2: Please refer to Figures 1-10 The present invention provides a technical solution: Embodiment 2 is an optimization based on Embodiment 1; Both ends of the rubber wheel 71 are fixedly connected to limiting circular plates 89. The metal sheet is located within the two limiting circular plates 89 to limit the metal sheet and prevent it from deflecting, thereby improving welding accuracy. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic coil pin automatic welding device, comprising a base (1) and two welding electrodes (11) arranged on the base (1), characterized in that: It also includes: A rectangular box (12) is set on the base (1) for stacking metal sheets; The feeding assembly (2) is set on the base (1) and connected to the rectangular box (12) for pushing the metal sheet out of the rectangular box (12) onto the electrode; A rectangular frame (3) is set on the base (1) for mounting the coil; A pusher assembly (4) is set on a base (1) and connected to a rectangular frame (3) for moving and flipping the rectangular frame (3) to continuously weld pins on the coil; The pushing component (4) includes a U-shaped frame (41) set at the bottom of the rectangular frame (3), a mounting plate (42) fixedly connected to the base (1), and a slide rod (43) fixedly connected to the mounting plate (42). One end of the slide rod (43) slides through the U-shaped frame (41) to guide and limit the movement of the U-shaped frame (41). A sliding plate (44) is provided on the base (1). A handle (45) is fixedly connected to one end of the sliding plate (44) for pushing the sliding plate (44) to move. A cylindrical protrusion (46) is provided at the bottom of the U-shaped frame (41). A guide groove (47) is provided on the sliding plate (44). One end of the cylindrical protrusion (46) is located in the guide groove (47). When the sliding plate (44) is moved, the guide groove (47) drives the U-shaped frame (41) to move. A hollow cylinder (48) is fixedly connected to one side of the rectangular frame (3), and a cylinder (49) is fixedly connected to the mounting plate (42). One end of the cylinder (49) is located inside the hollow cylinder (48) and is slidably connected to it. The hollow cylinder (48) slides through one end of the U-shaped frame (41). A shaft (51) is fixedly connected to one side of the rectangular frame (3). The shaft (51) is rotatably connected to the other end of the U-shaped frame (41). A cylindrical protrusion (52) is provided on the hollow cylinder (48). A guide groove (53) is provided on the cylinder (49). One end of the cylindrical protrusion (52) is located inside the guide groove (53). When the rectangular frame (3) is moved, the guide groove (53) drives the rectangular frame (3) to rotate. A hollow guide tube (83) is fixedly connected to the U-shaped frame (41). The cylindrical protrusion (46) is located inside the hollow guide tube (83) and is fixedly connected to a spring (84). An inclined slide groove (3) (85) is opened on the sliding plate (44) and communicates with the inclined slide groove (1) (54). An inclined slide groove (46) (86) is opened on the sliding plate (44). The two ends of the inclined slide groove (46) are respectively connected to the inclined slide groove (1) (54) and the inclined slide groove (3) (85). The inclined slide groove (46) is designed to be deeper than the inclined slide groove (3) (85). The inclined slide groove (1) (54) is designed to be deeper than the inclined slide groove (46). An inclined surface (64) is also provided inside the inclined slide groove (1) (54) and the inclined slide groove (46) (86).

2. The electromagnetic coil pin automatic welding apparatus according to claim 1, characterized by: The guide groove component (47) includes an inclined slide groove (54) opened on the sliding plate (44), one end of the cylindrical protrusion (46) is located in the inclined slide groove (54) and is slidably connected to its inner wall, and a T-shaped protrusion (55) is fixedly connected to the bottom end of the sliding plate (44). A T-shaped groove (56) is opened on the base (1), and one end of the T-shaped protrusion (55) is located in the T-shaped groove (56) for guiding and limiting the movement of the sliding plate (44).

3. The electromagnetic coil pin automatic welding apparatus according to claim 2, characterized by: The guide groove component 2 (53) includes a straight sliding groove 1 (57) opened on the cylinder (49), one end of the cylindrical protrusion 2 (52) is located in the straight sliding groove 1 (57) and is slidably connected to its inner wall, and a spiral groove 1 (58) opened on the cylinder (49) and communicating with the straight sliding groove 1 (57) is used to drive the rectangular frame (3) to rotate when the cylindrical protrusion 2 (52) slides along the spiral groove 1 (58) to switch the coil welding position; A hollow tube (59) is fixedly connected to the hollow cylinder (48). One end of the cylindrical protrusion (52) is located inside the hollow tube (59) and is fixedly connected to a spring (61). One end of the spring (61) is fixed to the inner wall of the hollow tube (59). A straight sliding groove (62) is opened on the cylinder (49) and communicates with the spiral groove (58). The straight sliding groove (62) is designed to be deeper than the spiral groove (58). A spiral groove 2 (63) is provided on the cylinder (49). The two ends of the spiral groove 2 (63) are respectively connected to the straight sliding groove 1 (57) and the straight sliding groove 2 (62). The straight sliding groove 1 (57) is designed to be deeper than the spiral groove 2 (63). The inner walls of the straight sliding groove 1 (57) and the straight sliding groove 2 (62) are provided with inclined surfaces (64).

4. The electromagnetic coil pin automatic welding apparatus according to claim 3, characterized by: The feeding assembly (2) includes a support frame (65) fixedly connected to the base (1), the rectangular box (12) is fixed to the support frame (65), a push plate (66) is slidably connected inside the rectangular box (12), and an electric push rod (67) is fixedly connected to the rectangular box (12). The extended end of the electric push rod (67) is fixed to the push plate (66) and is used to drive the push plate (66) to move and push out the metal sheet.

5. The electromagnetic coil pin automatic soldering apparatus of claim 4, wherein: The push plate (66) adopts a stepped design to support the metal sheet; A shaft 2 (68) is fixedly connected to one side of the rectangular box (12). A deflection plate (69) is rotatably connected to the shaft 2 (68). A rubber wheel (71) is rotatably connected to one end of the deflection plate (69) through a rotating shaft. A torsion spring (72) is sleeved on the shaft 2 (68). Both ends of the torsion spring (72) are fixed to the shaft 2 (68) and the deflection plate (69) respectively, and are used to provide downward pressure to the rubber wheel (71) to fix the metal sheet. A linkage (73) is provided between the push plate (66) and the deflection plate (69) to drive the deflection plate (69) to deflect when the push plate (66) is retracted, so as to lift the rubber wheel (71).

6. The electromagnetic coil pin automatic soldering apparatus of claim 5, wherein: The linkage component (73) includes a shaft three (74) fixedly connected to the deflection plate (69), an L-shaped plate (75) slidably connected to the side wall of the rectangular box (12), a guide groove (76) is provided at one end of the L-shaped plate (75), and one end of the shaft three (74) is located in the guide groove (76) and slidably connected to its inner wall. Furthermore, a shaft four (77) is fixedly connected to one end of the L-shaped plate (75), and a movable plate (78) is fixedly connected to the bottom end of the push plate (66). An inclined sliding groove two (81) is provided on the movable plate (78).

7. The solenoid pin automatic welding apparatus of claim 6, wherein: The movable plate (78) is slidably connected with a locking pin (87). One end of the locking pin (87) is arc-shaped and a spring (88) is fixedly connected to the other end of the locking pin (87). Multiple slots (91) are evenly spaced on the base (1) for temporarily fixing the sliding plate (44) in cooperation with the locking pin (87).

8. The solenoid pin automatic welding apparatus of claim 6, wherein: Both ends of the rubber wheel (71) are fixedly connected to limiting circular plates (89).

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