An automatic tin dipping device for hollow cup motor coil production

Abstract

This invention provides an automatic tinning device for the production of hollow cup motor coils. It relates to the field of coil tinning technology and includes a tin furnace, a rosin bath, a lifting plate, a drive mechanism, and a tinning mechanism. An mounting plate is bolted to the outer wall of the lifting plate. The tinning mechanism includes two positioning plates and a limiting plate. The two positioning plates are bolted to the bottom of the mounting plate and are located on one side of the mounting plate. A drive rod is rotatably mounted inside the two positioning plates via a coil spring. After tinning, during the upward movement of the gear ring, the gear ring controls the ratchet to rotate counterclockwise on the suction cup clamp. Compared to traditional vertical lifting, automatic rotation allows the molten solder at the bottom of the coil to rotate along the coil leads to the middle section of the coil, effectively eliminating spikes, improving the traditional tinning process, and ensuring better tinning quality.

Description

Technical Field

[0001] This invention relates to the field of coil tinning technology, and more particularly to an automatic tinning equipment for the production of hollow cup motor coils. Background Technology

[0002] A coreless motor, also known as a hollow rotor motor, is a specially designed DC motor. Its core feature is that the rotor does not have a traditional iron core structure, but is directly composed of hollow cup-shaped coil windings. This design gives it excellent dynamic performance and high efficiency, and it is widely used in scenarios that require fast response, lightweight and miniaturization.

[0003] Hollow cup motors are suitable for auxiliary systems and low-power applications in new energy vehicles, such as electronic throttle, brake booster, air conditioning compressor and fan, and intelligent cockpit adjustment. During the production process, the coil leads of the hollow cup motor need to be tinned.

[0004] However, in existing technologies, traditional tin-dipping processes involve vertically lifting and lowering the area to be tinned into the tin bath. When the material is lifted out, the molten tin that has not been fully soldered will have spikes at the bottom of the leads, resulting in poor processability and affecting the overall production quality of the coil.

[0005] Therefore, it is necessary to provide an automated tin-dipping device for the production of hollow cup motor coils to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides an automatic tin-dipping device for the production of hollow cup motor coils, which solves the technical problem in the traditional tin-dipping process that easily forms spikes during the rising material handling, resulting in poor processability.

[0007] To solve the above-mentioned technical problems, the present invention provides an automatic tin-dipping device for the production of hollow cup motor coils, including a tin furnace, a rosin bath, a lifting plate, a drive mechanism, and a tin-dipping mechanism; The outer wall of the lifting plate is bolted with an installation plate. The tin-immersion mechanism includes two positioning plates and a limiting plate. The two positioning plates are bolted to the bottom of the installation plate. The positioning plates are installed at the bottom of the installation plate and located on one side of the installation plate. The interior of the two positioning plates is rotatably mounted with a drive rod via a coil spring. The outer wall of the drive rod is bolted with a rotating frame. The interior of the rotating frame contains multiple suction cup clamps. The top of each suction cup clamp is sealed with multiple branch pipes. The outer wall of the installation plate is mounted with a negative pressure machine. The outlet of the negative pressure machine is sealed with a hose. The driving mechanism includes a rotating ring, a toothed ring, and a ratchet. The rotating ring is rotatably mounted inside the limiting plate. The toothed ring is located outside the rotating ring. Multiple locking pins are fixed on the outer wall of the toothed ring. Two locking rods are fixed inside the rotating ring. The outer walls of the two locking rods are rotatably mounted on a torsion spring and a ratchet. The ratchet is located at the axis of the rotating ring. A rotating rod is fixed at the axis of the ratchet. The outer wall of the tin furnace is fitted with a bracket by bolts, and a trigger rack is installed inside the bracket.

[0008] Preferably, the air outlet of the hose is sealed and connected to multiple branch pipes, and the multiple suction cup clamps are equidistantly arranged in the horizontal direction about the rotating frame.

[0009] Preferably, the toothed ring is coaxially mounted with the rotating ring via a snap pin, the two ratchet teeth mesh with the ratchet wheel, the axis of the ratchet wheel is connected to the axis of the drive rod via a keyway, and the toothed ring and the trigger rack are mutually adapted.

[0010] Preferably, it also includes a moving motor and a heat dissipation mechanism; The output end of the movable motor is equipped with a movable lead screw, the top of the movable lead screw is threaded with a movable seat, the top of the movable seat is equipped with a lifting motor, and the output shaft of the lifting motor is keyway connected to the lifting lead screw. The outer wall of the lifting screw is threadedly connected to the lifting plate, and the lifting plate is slidably connected to the moving seat; A support plate is installed on the back of the lifting plate and on the side away from the mounting plate, and a back plate is fixed on the outer wall of the support plate. The heat dissipation mechanism includes a positioning frame and two cooling fans. The two fans are embedded inside the positioning frame. Both sides of the positioning frame are bolted with retaining frames. A first gear is connected to the keyway at the outer end of the rotating rod. A first rack is meshed with the bottom of the first gear. A second gear is connected to the keyway at one end of the driving rod. A second rack is meshed with the upper surface of the second gear. Two sliding rods are fixed to the top of the positioning frame. Baffles are fixed to the outer walls of the two sliding rods. Return springs are sleeved on the outer walls of the two sliding rods.

[0011] Preferably, the first rack and the second rack are both installed to the two clip frames by bolts, and the two slide rods pass through the interior of the mounting plate and the back plate.

[0012] Preferably, the two ends of the two reset springs are fixedly connected to the mounting plate and the two baffles, and the air outlets of the two fans face the direction of the drive rod.

[0013] Preferably, it also includes a scraping mechanism; The scraping mechanism includes four mounting seats and two limiting rods. The four mounting seats are fixed around the upper surface of the tin furnace. The two limiting rods are located on opposite sides of the four mounting seats. Scrapers are slidably connected to the outer walls of the two limiting rods. Limiting springs are sleeved on the outer walls of the two limiting rods. A trigger plate is bolted to the outer wall of the back plate.

[0014] Preferably, the bottom of the scraper extends into the interior of the tin furnace, and the left and right ends of the two limiting springs are in contact with the scraper and the mounting base.

[0015] Compared with related technologies, the automatic tin-dipping equipment for producing hollow cup motor coils provided by the present invention has the following beneficial effects: Compared to the traditional vertical lifting tin-dip process design, this design utilizes a lifting gear ring and a trigger rack to engage during the tin-dip process, controlling the ring's forward and reverse rotation. A ratchet and ratchet mechanism further connect the gear ring. During tin-dip, the gear ring descends, ensuring the coil in the suction cup holder enters the tin bath vertically. After tin-dip, as the gear ring rises, it controls the ratchet to rotate the suction cup holder counter-clockwise. Compared to traditional vertical lifting, this automatic rotation allows the molten solder at the bottom of the coil to move along the coil leads to the middle section of the coil, effectively eliminating spikes and improving upon traditional tin-dip processes, thus ensuring higher tin-dip quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the optimal structure for the present invention; Figure 2 for Figure 1 The diagram shows the back structure. Figure 3 for Figure 2 The enlarged structural diagram at point A is shown below; Figure 4 for Figure 1 The diagram shows the structure of the tin furnace, rosin tank, and scraping mechanism. Figure 5 for Figure 1 The diagram shows the structure of the heat dissipation mechanism, the drive mechanism, and the tin-dipping mechanism. Figure 6 for Figure 5 Detailed structural diagrams of the drive mechanism and tin-dipping mechanism are shown below; Figure 7 for Figure 6 The diagram shows the disassembled structure of the drive mechanism; Figure 8 for Figure 6 The diagram shows the installation structure of the tin-dipping mechanism. Figure 9 This is a schematic diagram showing that the ratchet is not engaged when the chuck clamp descends before the tin-dipping process provided by the present invention. Figure 10 for Figure 9 The diagram shows the working state of the toothed ring driving the ratchet to rotate during the upward movement after the tinning is completed; Figure 11 A schematic diagram of the working state of the heat dissipation mechanism provided by the present invention.

[0018] Explanation of icon numbers: 1. Tin furnace; 2. Rosin bath; 3. Lifting platform; 4. Mounting platform; 5. Drive mechanism; 51. Rotary ring; 52. Gear ring; 53. Locking pin; 54. Locking rod; 55. Torsion spring; 56. Ratchet; 57. Ratchet wheel; 58. Rotating rod. 6. Tin dipping mechanism; 61. Positioning plate; 62. Limiting plate; 63. Drive rod; 64. Rotating frame; 65. Suction cup clamp; 66. Branch pipe; 67. Negative pressure machine; 68. Hose. 7. Heat dissipation mechanism; 71. Positioning bracket; 72. Fan; 73. Frame; 74. First gear; 75. First rack; 76. Second gear; 77. Second rack; 78. Slide rod; 79. Baffle; 710. Return spring. 8. Scraping mechanism; 81. Mounting base; 82. Limiting rod; 83. Limiting spring; 84. Scraper. 9. Moving motor; 10. Moving lead screw; 11. Moving base; 12. Lifting motor; 13. Lifting lead screw; 14. Support plate, 15. Back plate, 16. Trigger plate, 17. Bracket, 18. Trigger rack. Detailed Implementation

[0019] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides an automatic tin-dipping device for the production of hollow cup motor coils.

[0021] First embodiment: Please combine Figure 1 , Figures 5 to 10 An automatic tin-dipping device for producing hollow cup motor coils includes a tin furnace 1, a rosin tank 2, a lifting plate 3, a drive mechanism 5, and a tin-dipping mechanism 6. The outer wall of the lifting plate 3 is bolted with an mounting plate 4. The tin-immersion mechanism 6 includes two positioning plates 61 and a limiting plate 62. The two positioning plates 61 are bolted to the bottom of the mounting plate 4. The positioning plates 61 are mounted on the bottom of the mounting plate 4 and located on one side of the mounting plate 4. The interior of the two positioning plates 61 is rotatably mounted with a drive rod 63 via a coil spring. The outer wall of the drive rod 63 is bolted with a rotating frame 64. The interior of the rotating frame 64 contains multiple suction cup clamps 65. The top of each suction cup clamp 65 is sealed with multiple branch pipes 66. The outer wall of the mounting plate 4 is mounted with a negative pressure machine 67. The outlet of the negative pressure machine 67 is sealed with a hose 68. Please see Figure 8 The rotating frame 64 can be designed in sections. During installation, the user can close the rotating frame 64 with bolts and install it on the drive rod 63. At the same time, the suction cup clamps 65 are sequentially embedded in the corresponding holes of the rotating frame 64. Then, the negative pressure machine 67, hose 68 and branch pipe 66 are installed. During the feeding process, the coil to be processed is positioned inside the suction cup clamp 65 in sequence. By starting the negative pressure machine 67, suction force is generated to stably adsorb the coil to be processed inside the suction cup clamp 65 through the hose 68 and branch pipe 66, so that the subsequent tinning work can be completed.

[0022] The drive mechanism 5 includes a rotating ring 51, a toothed ring 52, and a ratchet 57. The rotating ring 51 is rotatably mounted inside the limiting plate 62. The toothed ring 52 is located outside the rotating ring 51. Multiple locking pins 53 are fixed on the outer wall of the toothed ring 52. Two locking rods 54 are fixed inside the rotating ring 51. The outer walls of the two locking rods 54 are rotatably mounted on a torsion spring 55 and a ratchet 56. The ratchet 57 is located at the axis of the rotating ring 51. A rotating rod 58 is fixed at the axis of the ratchet 57. The outer wall of the tin furnace 1 is bolted with a bracket 17, and a trigger rack 18 is installed inside the bracket 17.

[0023] Please see Figure 1 and Figure 9Before tinning, the limiting plate 62 needs to be moved to a suitable position (this position needs to ensure that the toothed ring 52 on the limiting plate 62 can mesh with the trigger rack 18 at the bottom). During the tinning process, the entire rotating frame 64 needs to be controlled to drive the internal suction cup clamp 65 and the internal coil to descend into the tin furnace 1. During the descent, the toothed ring 52 will definitely come into contact with the trigger rack 18, thereby realizing the clockwise meshing and rotating motion of the toothed ring 52 on the trigger rack 18. Please see Figure 7 and Figure 9 When the toothed ring 52 rotates clockwise, it will also drive the rotating ring 51 to rotate the internal ratchet 56 around the surface of the ratchet 57 clockwise. During the clockwise rotation, the ratchet 56 and the ratchet 57 will avoid each other. Therefore, during the tinning process, although the toothed ring 52 can rotate, it will not affect the rotating frame 64, which will still move vertically downward.

[0024] Please see Figure 10 After the tinning is completed, during the rising and picking process, it is necessary to control the rotating frame 64 to rise. During the rising process, the toothed ring 52 will also enter the interior of the trigger rack 18. At this time, it will mesh and rotate counterclockwise. When the toothed ring 52 rotates counterclockwise, it will drive the ratchet 56 to interfere counterclockwise and affect the ratchet 57 to rotate synchronously.

[0025] Please refer to 6 again. Figure 8 and Figure 10 When the ratchet 57 rotates counterclockwise, it will control the drive rod 63 to drive the rotating frame 64 to rotate, and the suction cup clamp 65 will also rotate accordingly.

[0026] The air outlet of the hose 68 is sealed and connected to multiple branch pipes 66, and multiple suction cup clamps 65 are equidistantly arranged in the horizontal direction about the rotating frame 64.

[0027] The gear ring 52 is coaxially mounted with the rotating ring 51 via a snap pin 53. The two ratchet teeth 56 mesh with the ratchet wheel 57. The axis of the ratchet wheel 57 is connected to the keyway of the drive rod 63. The gear ring 52 is adapted to the trigger rack 18.

[0028] In this embodiment, compared to the traditional vertical lifting tin-dip process design, the toothed ring 52 and the trigger rack 18 engage during the tin-dip process, controlling the toothed ring 52 to rotate in both directions. The toothed ring 52 is connected to the ratchet 57 and ratchet 56. When tin-dip is performed, the toothed ring 52 descends, ensuring that the coil in the suction cup clamp 65 can vertically enter the tin bath 1 for vertical tin-dip. After tin-dip, as the toothed ring 52 rises, it controls the ratchet 57 to rotate the suction cup clamp 65 counterclockwise. Compared to the traditional vertical lifting process, this automatic rotation allows the molten solder at the bottom of the coil to rotate along the coil leads to the middle of the coil, effectively eliminating spikes and improving the traditional tin-dip process, thus ensuring better tin-dip quality.

[0029] Understandable: combination Figure 8 As can be seen, since the drive rod 63 is installed via a coil spring and a positioning plate 61, when the gear ring 52 and the trigger rack 18 are separated, the rotating frame 64 will be automatically controlled to reset.

[0030] Second embodiment: Please see Figure 1 , Figures 9 to 11 It also includes a moving motor 9 and a heat dissipation mechanism 7; The output end of the movable motor 9 is equipped with a movable lead screw 10, the top of the movable lead screw 10 is threaded with a movable seat 11, the top of the movable seat 11 is equipped with a lifting motor 12, and the output shaft of the lifting motor 12 is keyway connected to a lifting lead screw 13. The outer wall of the lifting screw 13 is threadedly connected to the lifting plate 3, and the lifting plate 3 is slidably connected to the movable seat 11. A support plate 14 is installed on the back of the lifting plate 3 and on the side away from the mounting plate 4, and a back plate 15 is fixed on the outer wall of the support plate 14. Please see Figure 1 The user can change the front and back position of the moving seat 11 by starting the moving motor 9 to control the forward and reverse rotation of the moving screw 10. By starting the lifting motor 12 to control the forward and reverse rotation of the lifting screw 13, the entire lifting plate 3 can be raised and lowered. This allows the mounting plate 4 to move freely in the front, back and up and down positions.

[0031] The heat dissipation mechanism 7 includes a positioning frame 71 and two cooling fans 72. The two fans 72 are embedded inside the positioning frame 71. Both sides of the positioning frame 71 are bolted with retaining frames 73. The outer end of the rotating rod 58 is keyed to a first gear 74. The bottom of the first gear 74 is meshed with a first rack 75. One end of the drive rod 63 is keyed to a second gear 76. The upper surface of the second gear 76 is meshed with a second rack 77. The top of the positioning frame 71 is fixed with two sliding rods 78. The outer walls of the two sliding rods 78 are fixed with baffles 79. The outer walls of the two sliding rods 78 are fitted with return springs 710.

[0032] Please see Figure 9 and Figure 11 When the tin is dipped, only the toothed ring 52 will rotate. Therefore, the entire heat dissipation mechanism 7 will not be affected during the tin dipping process. Thus, during the tin dipping process, there is a maximum distance between the fan 72 and the suction cup clamp 65. During the tin dipping process, the fan 72 can remove the smoke generated by the soldering process by airflow.

[0033] Please see Figure 10 and Figure 11 After the tinning is completed, as the gear ring 52 rises, it will drive the ratchet 57 to rotate counterclockwise. At this time, the counterclockwise rotating ratchet 57 will synchronously drive the drive rod 63 and the rotating rod 58 to rotate counterclockwise. Therefore, the first gear 74 and the second gear 76 will be affected by the rotating rod 58 and the drive rod 63 to rotate counterclockwise. When rotating counterclockwise, the meshing transmission controls the first rack 75 and the second rack 77 to pull the positioning frame 71 so that the internal fan 72 is close to the drive rod 63. This can change the distance between the fan 72 and the suction cup clamp 65, thus enabling heat dissipation.

[0034] The first rack 75 and the second rack 77 are both installed to the two clip frames 73 by bolts, and the two slide rods 78 pass through the interior of the mounting plate 4 and the back plate 15.

[0035] The two ends of the two reset springs 710 are fixedly connected to the mounting plate 4 and the two baffles 79, and the air outlets of the two fans 72 face the drive rod 63.

[0036] Understandably, as the fan 72 approaches the suction cup clamp 65, it will simultaneously drive the baffle 79 to compress the reset spring 710. At this time, the slide bar 78 will adaptively slide inside the mounting plate 4 and the back plate 15. During the operation of the first embodiment, after the final toothed ring 52 and the trigger rack 18 separate, the reset spring 710 will assist the drive rod 63 in completing the automatic reset of the rotating frame 64 and the fan 72.

[0037] In this embodiment, compared to the traditional design, a fan 72 is included. During the tin dipping process, the fan 72 and the suction cup clamp 65 are at their furthest distance. This design can remove the soldering fumes generated during tin dipping and also prevent fluctuations in the molten solder on the tin pot 1, achieving stable tin dipping while ensuring the safety of the workers. After the tinning is completed, the first gear 74 and the second gear 76 will follow the ratchet 57 to achieve counterclockwise linkage control of the fan 72 to approach the suction cup clamp 65. This can quickly dry and dissipate heat on the molten solder on the coil pins, ensuring that the molten solder can condense quickly. Therefore, the linkage of the fan 72 has two functions.

[0038] Third embodiment: Please see Figures 1 to 4 It also includes a scraping mechanism 8; The scraping mechanism 8 includes four mounting seats 81 and two limiting rods 82. The four mounting seats 81 are fixed around the upper surface of the tin furnace 1. The two limiting rods 82 are located on opposite sides of the four mounting seats 81. Scrapers 84 are slidably connected to the outer walls of the two limiting rods 82. Limiting springs 83 are sleeved on the outer walls of the two limiting rods 82. A trigger plate 16 is bolted to the outer wall of the back plate 15.

[0039] The bottom of the scraper 84 extends into the interior of the tin furnace 1, and the left and right ends of the two limiting springs 83 are in contact with the scraper 84 and the mounting base 81.

[0040] Please see Figure 2 and Figure 3 In the second embodiment, the mounting plate 4 has similar mobility, so the user can freely rotate it to bring the bottom of the trigger plate 16 close to the scraping mechanism 8 before tinning.

[0041] Please see Figure 1 and Figure 4 As the lifting plate 3 moves forward, the trigger plate 16 is located on one side of the scraper 84. At this time, the trigger plate 16 moves with the lifting plate 3 and pushes the scraper 84 to move along the liquid surface of the tin furnace 1 to scrape away the molten metal. At this time, the limit spring 83 is in a compressed state. Finally, when the trigger plate 16 rises, it separates from the scraper 84.

[0042] In this embodiment, compared to the traditional design, the design features an automatically resetting scraper 84, which is positioned on the surface of the molten solder in the solder bath 1. The user can freely choose whether to bring the trigger plate 16 close to the scraper 84. During the movement of the lifting plate 3, the trigger plate 16 is automatically controlled to drive the scraper 84 to move horizontally along the solder bath 1. This design can automatically remove the molten solder oxides on the surface of the solder bath 1, avoiding manual scraping and further improving the tinning quality.

[0043] Please refer to the following: Figures 1 to 11 The working principle of the automatic tin-dipping equipment for producing hollow cup motor coils provided by this invention is as follows: Step S1: First, the coil needs to be positioned and clamped. Position the coil to be processed in the suction cup clamp 65 in sequence. By starting the negative pressure machine 67, the suction force is generated and the coil to be processed is stably adsorbed in the suction cup clamp 65 through the hose 68 and the branch pipe 66. It should be noted that the feeding can be done manually or automatically by the conveyor. Step S2: After the coil is positioned, the lifting plate 3 needs to be moved to the rosin pool 2 to lower the coil pins completely into the rosin pool 2 to soak them in rosin. Then the coil pins are lifted out and placed into the solder pot 1 to achieve soldering. Step S3: During the tinning process, the coil leads need to be vertically controlled to descend into the tin bath 1. After stopping for two or three seconds and completing the soldering, the coil is lifted out. After the tinning is completed, during the rising process, the rotating frame 64 needs to be controlled to rise. During the rising process, the toothed ring 52 will also enter the interior of the trigger rack 18. At this time, it will engage and rotate counterclockwise. When the toothed ring 52 rotates counterclockwise, it will drive the ratchet 56 to interfere counterclockwise and affect the ratchet 57 to rotate synchronously. When the ratchet 57 rotates counterclockwise, it will control the drive rod 63 to drive the rotating frame 64 to rotate. The suction cup clamp 65 will also rotate accordingly, so that the molten solder at the bottom of the coil can rotate and move along the coil leads to the middle position of the coil, thereby effectively eliminating the spike situation and improving the traditional tinning process. Step S4: During the upward movement of the gear ring 52, it will drive the ratchet 57 to rotate counterclockwise. At this time, the counterclockwise rotating ratchet 57 will synchronously drive the drive rod 63 and the rotating rod 58 to rotate counterclockwise. Therefore, the first gear 74 and the second gear 76 will be affected by the rotating rod 58 and the drive rod 63 to rotate counterclockwise. When rotating counterclockwise, the meshing transmission controls the first rack 75 and the second rack 77 to pull the positioning frame 71 so that the internal fan 72 is close to the drive rod 63. This can change the distance between the fan 72 and the suction cup clamp 65. The fan 72 can realize the rapid condensation of the solder on the coil pin.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An automatic tin-dipping device for producing hollow cup motor coils, characterized in that, Includes a tin furnace, rosin bath, lifting plate, drive mechanism, and tin-dipping mechanism; The outer wall of the lifting plate is bolted with an installation plate. The tin-immersion mechanism includes two positioning plates and a limiting plate. The two positioning plates are bolted to the bottom of the installation plate. The positioning plates are installed at the bottom of the installation plate and located on one side of the installation plate. The interior of the two positioning plates is rotatably mounted with a drive rod via a coil spring. The outer wall of the drive rod is bolted with a rotating frame. The interior of the rotating frame contains multiple suction cup clamps. The top of each suction cup clamp is sealed with multiple branch pipes. The outer wall of the installation plate is mounted with a negative pressure machine. The outlet of the negative pressure machine is sealed with a hose. The driving mechanism includes a rotating ring, a toothed ring, and a ratchet. The rotating ring is rotatably mounted inside the limiting plate. The toothed ring is located outside the rotating ring. Multiple locking pins are fixed on the outer wall of the toothed ring. Two locking rods are fixed inside the rotating ring. The outer walls of the two locking rods are rotatably mounted on a torsion spring and a ratchet. The ratchet is located at the axis of the rotating ring. A rotating rod is fixed at the axis of the ratchet. The outer wall of the tin furnace is fitted with a bracket by bolts, and a trigger rack is installed inside the bracket.

2. The automatic tin-dipping equipment for producing hollow cup motor coils according to claim 1, characterized in that, The air outlet of the hose is sealed and connected to multiple branch pipes, and multiple suction cup clamps are equidistantly arranged in the horizontal direction about the rotating frame.

3. The automatic tin-dipping equipment for producing hollow cup motor coils according to claim 1, characterized in that, The gear ring is coaxially mounted with the rotating ring via a snap pin. The two ratchet teeth mesh with the ratchet wheel. The axis of the ratchet wheel is connected to the keyway of the drive rod. The gear ring and the trigger rack are mutually adapted.

4. The automatic tin-dipping equipment for producing hollow cup motor coils according to claim 1, characterized in that, It also includes a moving motor and a heat dissipation mechanism; The output end of the movable motor is equipped with a movable lead screw, the top of the movable lead screw is threaded with a movable seat, the top of the movable seat is equipped with a lifting motor, and the output shaft of the lifting motor is keyway connected to the lifting lead screw. The outer wall of the lifting screw is threadedly connected to the lifting plate, and the lifting plate is slidably connected to the moving seat; A support plate is installed on the back of the lifting plate and on the side away from the mounting plate, and a back plate is fixed on the outer wall of the support plate. The heat dissipation mechanism includes a positioning frame and two cooling fans. The two fans are embedded inside the positioning frame. Both sides of the positioning frame are bolted with retaining frames. A first gear is connected to the keyway at the outer end of the rotating rod. A first rack is meshed with the bottom of the first gear. A second gear is connected to the keyway at one end of the driving rod. A second rack is meshed with the upper surface of the second gear. Two sliding rods are fixed to the top of the positioning frame. Baffles are fixed to the outer walls of the two sliding rods. Return springs are sleeved on the outer walls of the two sliding rods.

5. The automatic tin-dipping equipment for producing hollow cup motor coils according to claim 4, characterized in that, Both the first and second racks are mounted to the two clip frames by bolts, and both slide rods pass through the interior of the mounting plate and the back plate.

6. The automatic tin-dipping equipment for producing hollow cup motor coils according to claim 4, characterized in that, The two ends of the two reset springs are fixedly connected to the mounting plate and the two baffles, and the air outlets of the two fans face the direction of the drive rod.

7. The automatic tin-dipping equipment for producing hollow cup motor coils according to claim 1, characterized in that, It also includes a scraping mechanism; The scraping mechanism includes four mounting seats and two limiting rods. The four mounting seats are fixed around the upper surface of the tin furnace. The two limiting rods are located on opposite sides of the four mounting seats. Scrapers are slidably connected to the outer walls of the two limiting rods. Limiting springs are sleeved on the outer walls of the two limiting rods. A trigger plate is bolted to the outer wall of the back plate.

8. The automatic tin-dipping equipment for producing hollow cup motor coils according to claim 7, characterized in that, The bottom of the scraper extends into the interior of the tin furnace, and the left and right ends of the two limiting springs are in contact with the scraper and the mounting base.

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