Motor stator paint dripping process and paint dripping device

Abstract

The invention provides a motor stator paint dripping process and a paint dripping device, and the motor stator paint dripping process comprises the steps: stator state detection, equipment detection, feeding, left side pre-drying, first left side paint dripping, first right side paint dripping, second left side paint dripping, second right side paint dripping, right side curing, blanking, and detection. The clamping jaws on the two sides are used for clamping at a time and conducting preheating, paint dripping and heating curing on coils on the two sides of a stator respectively, so that the production efficiency is improved, it is guaranteed that the coils are preheated in place, insulating paint dripping on the clamping jaws is reduced, the insulating paint cured on the clamping jaws is relatively reduced, the cleaning frequency is reduced, and waste of the insulating paint is reduced.

Description

Technical Field

[0001] The present invention relates to an electric motor, and in particular, to a dipping process and a dipping device for an electric motor stator. Background Art

[0002] The dipping process of the electric motor stator is an important link in the manufacturing process of the electric motor, which is used to enhance the insulation performance and structural strength of the electric motor. Through processes such as preheating, dipping, and curing, the insulating paint is evenly filled into the gaps of the stator coil, thereby improving the operating efficiency and service life of the electric motor. After further improvement of the dipping process, a dripping process is derived, which reduces solvent volatilization and environmental pollution compared to the dipping process.

[0003] The current dripping process requires multiple dripping and curing treatments on the coils on one side of the electric motor stator, and then it is flipped and installed to re-perform the dripping and curing treatments on the coils on the other side. The overall production time is relatively long and the efficiency is low. Summary of the Invention

[0004] In view of this, the first object of the present invention is to provide a dipping process for an electric motor stator with relatively high processing efficiency.

[0005] The technical solution of the present invention is: a dipping process for an electric motor stator, including: S1: Inspect the stator state to observe whether there are any defects in the stator; S2: Detect the equipment to check whether the dipping device can operate normally and whether the raw material of the insulating paint is sufficient; S3: Load the material, and install the stator on the clamping jaws of the dipping device; S4: Pre-bake on the left side, pre-heat the stator through the dipping device; S5: First left-side dripping, drip paint on the coils on the left side of the stator. The dripping revolution time is 18 - 23 seconds, and the dripping amount is 45 - 50 grams. At the same time, pre-bake the coils on the right side of the stator; S6: First right-side dripping, install the stator on the clamping jaws on the other side through the dipping device, and drip paint on the coils on the right side of the stator. The dripping revolution time is 18 - 23 seconds, and the dripping amount is 45 - 50 grams. At the same time, heat and cure the paint on the coils on the left side of the stator, and the curing temperature is 130°C - 140°C; S7: Second left-side dripping, perform a second dripping on the coils on the left side of the stator. The dripping revolution time is 18 - 23 seconds, and the dripping amount is 45 - 50 grams. At the same time, heat and cure the coils on the right side of the stator, and the curing temperature is 130°C - 140°C; S8: Second right-side dripping, perform a second dripping on the coils on the right side of the stator. The dripping revolution time is 18 - 23 seconds, and the dripping amount is 45 - 50 grams. At the same time, perform secondary heat curing on the coils on the left side of the stator, and the curing temperature is 135°C - 145°C; S9: Curing on the right side, secondarily heating and curing the coils on the right side of the stator, with the curing temperature being 135°C - 145°C; S10: Unloading; S11: Inspection, checking whether the windings are completely cured, with even dipping, no dripping, no loose slot wedges, no paint tumors on the inner and outer circles of the iron core and the surface of the stop, and no scorched yellow on the insulating paper.

[0006] Through the above technical means, the coils on both sides of the stator are clamped at one time by the clamping jaws on both sides and preheated, dipped with paint, and heated and cured respectively, thereby increasing the production efficiency. At the same time, it ensures that the coils are preheated in place, reduces the insulating paint dripping on the clamping jaws, relatively reduces the insulating paint cured on the clamping jaws, reduces the cleaning frequency, and reduces the waste of insulating paint.

[0007] The second object of the present invention is to provide a paint dipping device applicable to the above-mentioned paint dipping process for the motor stator.

[0008] The technical solution of the present invention is: a paint dipping device, including a transport rack, a processing cover, a transmission component, a paint dipping nozzle, and a heating nozzle. The processing cover is fixed on the transport rack, the transmission component is arranged on the transport rack, a paint dipping area and a heating area are arranged in the processing cover, the paint dipping nozzle is arranged in the paint dipping area, the heating nozzle is arranged in the heating area, the transmission component includes a circulating conveyor chain one and a circulating conveyor chain two, and a first clamping jaw component and a second clamping jaw component are respectively arranged on the circulating conveyor chain one and the circulating conveyor chain two, and the first clamping jaw component and the second clamping jaw component alternately clamp the stator.

[0009] Through the above technical means, the first clamping jaw component and the second clamping jaw component are transported by the circulating conveyor chain one and the circulating conveyor chain two, thereby driving the stator to move in the paint dipping area and the heating area.

[0010] Preferably, the first clamping jaw component and the second clamping jaw component have the same structure. The first clamping jaw component includes a base shaft, a rotating shaft, and three jaw heads. The base shaft is fixedly arranged on the circulating conveyor chain one, the rotating shaft is arranged in the base shaft, the jaw heads are arranged in an annular array on the rotating shaft, and further includes a pushing structure for driving the jaw heads to expand and contract, a rotating structure for driving the rotating shaft to rotate, and a clamping structure for driving the jaw heads to open and close.

[0011] Through the above technical means, the clamping structure drives the jaw heads to open and close, thereby clamping or loosening the stator. The rotating structure drives the rotating shaft to rotate, so that the insulating paint is more uniform during paint dipping and at the same time the excess insulating paint is thrown out. The pushing structure pushes out the stator, so that the stator is exchanged between the first clamping jaw component and the second clamping jaw component.

[0012] Preferably, a sliding base is fixedly arranged on the transport rack. A sliding groove is formed in the sliding base. The base shaft slides in the sliding groove. The rotating structure includes a rotating motor I arranged in the sliding base. A T-shaped chuck is arranged at the output end of the rotating motor I. A T-shaped slot is arranged at the tail of the rotating shaft. When the T-shaped chuck is inserted into the T-shaped slot, the rotating motor I can drive the rotating shaft to rotate.

[0013] By the above technical means, through the cooperation between the T-shaped chuck and the first slot, when the base shaft moves to the working position, it is convenient for the rotating motor I to drive the rotating shaft to rotate.

[0014] Preferably, the pushing structure includes an air duct I, an air duct II and a push rod. The air duct I is arranged in the sliding base. The air duct II is arranged in the base shaft and the rotating shaft. A sliding hole I is formed in the rotating shaft. The push rod is slidably arranged in the sliding hole I. A cavity I is arranged between the push rod and the rotating shaft. The air duct I, the air duct II and the cavity I are communicated with each other. A limiting sliding groove is formed at the upper end of the push rod. A limiting column is fixedly arranged on the rotating shaft and slides in the limiting sliding groove.

[0015] By the above technical means, by arranging the air duct I and the air duct II, when the base shaft moves to the working position, the air duct I is communicated with the air duct II, and the push rod is driven to move by air pressure, so as to drive the stator to eject or retract.

[0016] Preferably, the clamping structure includes a conical block, a conical rod and an air duct group. A counterbore is formed at the end of the push rod. The conical block is arranged in the counterbore. Three vertical holes are formed in the side end of the push rod. The conical rod is slidably arranged in the vertical holes. Bevels are arranged at the tails of the conical block and the conical rod. The air duct group is used to drive the conical block to move and lift the conical rod. The claw head is arranged on the conical rod.

[0017] By the above technical means, through the cooperation between the conical block and the conical rod, and an air duct group is arranged at the tail of the conical block, the conical rod is moved by ejecting the conical block by air pressure, so as to achieve the purpose of loosening or clamping the stator.

[0018] Preferably, the air duct group includes an air duct III, an air duct IV and an air duct V. A sliding hole II is arranged in the push rod. An inner rod is arranged in the sliding hole II. The inner rod is fixedly arranged in the rotating shaft and is slidably matched with the sliding hole II. The air duct III is formed in the sliding base. The air duct IV is formed in the base shaft. The air duct V is formed in the rotating shaft. An air duct VI is formed in the inner rod. The air duct III, the air duct IV, the air duct V and the air duct VI are communicated with each other.

[0019] By the above technical means, by arranging the air duct III, the air duct IV and the air duct V, when the base shaft moves to the working position, the clamping jaws can be driven to open and close by air pressure. By arranging the inner rod, it is prevented that the air duct V is communicated with the air duct II, so that the two gas flow channels are independent, and at the same time, the sliding accuracy of the push rod is increased.

[0020] Preferably, a paint collecting plate is further arranged outside the base shaft. When the pushing structure drives the first jaw assembly to move back, the coil moves to the outside of the paint collecting plate.

[0021] By the above technical means, by arranging the paint collecting plate, when blowing hot air to cure the insulating paint, the insulating paint dripping on the base shaft is further reduced.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The two-side jaws are used for clamping at one time, and the coils on both sides of the stator are preheated, drip-painted, and heated and cured respectively, thereby increasing the production efficiency. At the same time, it ensures that the coils are preheated in place, reduces the insulating paint dripping on the jaws, relatively reduces the insulating paint cured on the jaws, reduces the cleaning frequency, and reduces the waste of insulating paint; 2. By arranging the air duct 1 and the air duct 3, when the base shaft moves to the working station, the air pump can be used to convey air to the air duct 1 and the air duct 3 and extract air to control the ejection of the stator and the opening and closing of the jaws. While ensuring that the base shaft can move along with the circulating conveyor chain 1 and the circulating conveyor chain 2, it provides driving force for them. Description of the Drawings

[0023] Figure 1 Structural schematic diagram of Embodiment 2 Figure 1 ; Figure 2 Structural schematic diagram of Embodiment 2 Figure 2 ; Figure 3 Cross-sectional schematic diagram of Embodiment 2; Figure 4 Structural schematic diagram of the first jaw assembly; Figure 5 Structural schematic diagram of the jaw head.

[0024] Reference numerals: 1, transport rack; 2, processing cover; 3, transmission assembly; 4, paint dripping nozzle; 5, heating nozzle; 6, paint dripping area; 7, heating area; 8, first circulating conveyor chain; 9, second circulating conveyor chain; 10, first jaw assembly; 11, second jaw assembly; 12, base shaft; 13, rotating shaft; 14, jaw head; 15, material pushing structure; 16, rotating structure; 17, material clamping structure; 18, sliding base; 19, sliding groove; 20, first rotating motor; 21, one-word clamping block; 22, one-word clamping groove; 23, first air duct; 24, second air duct; 25, push rod; 26, first sliding hole; 27, first cavity; 28, limiting sliding groove; 29, limiting post; 30, tapered block; 31, tapered rod; 32, air duct group; 33, counterbore; 34, vertical hole; 35, limiting vertical rod; 36, top ring; 37, spring; 38, third air duct; 39, fourth air duct; 40, fifth air duct; 41, second sliding hole; 42, inner rod; 43, sixth air duct; 44, paint collecting plate; 90, stator. Detailed implementation manners

[0025] The following further details the specific implementation manners of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master. Embodiment

[0026] A paint dripping process for a motor stator 90 includes: S1: Check the state of the stator 90 and observe whether there are any defects in the stator 90; S2: Detect the equipment to check whether the paint dripping device can operate normally and whether the raw material of the insulating paint is sufficient; S3: Load the material and install the stator 90 on the jaws of the paint dripping device; S4: Pre-bake on the left side, pre-heat the stator 90 through the paint dripping device; S5: First paint dripping on the left side, drip paint on the left-side coil of the stator 90, the paint dripping revolution time is 20 seconds, and the paint dripping amount is 45 grams. At the same time, pre-bake the right-side coil of the stator 90; S6: First paint dripping on the right side, install the stator 90 on the jaws on the other side through the paint dripping device, and drip paint on the right-side coil of the stator 90. The paint dripping revolution time is 20 seconds, and the paint dripping amount is 45 grams. At the same time, heat and cure the paint on the left-side coil of the stator 90, and the curing temperature is 135°C; S7: Second paint dripping on the left side, perform second paint dripping on the left-side coil of the stator 90, the paint dripping revolution time is 22 seconds, and the paint dripping amount is 50 grams. At the same time, heat and cure the right-side coil of the stator 90, and the curing temperature is 135°C; S8: Second paint dripping on the right side, perform second paint dripping on the right-side coil of the stator 90, the paint dripping revolution time is 22 seconds, and the paint dripping amount is 50 grams. At the same time, perform secondary heat curing on the left-side coil of the stator 90, and the curing temperature is 145°C; S9: Curing on the right side, secondary heating and curing of the coils on the right side of the stator 90, with the curing temperature being 145 °C; S10: Unloading; S11: Inspection, checking whether the windings are completely cured, with even dipping and no dripping, no looseness of the slot wedges, no paint tumors on the inner and outer circles and the stop surface of the iron core, and no charring of the insulating paper. Embodiment

[0027] A dipping device includes a transport rack 1, a processing cover 2, a transmission assembly 3, a dipping nozzle 4, and a heating nozzle 5. The processing cover 2 is fixed on the transport rack 1, the transmission assembly 3 is arranged on the transport rack 1. Inside the processing cover 2, there is a dipping area 6 and a heating area 7. The dipping area 6 is set in the middle of the processing cover 2, and the heating area 7 is set on both sides of the processing cover 2. The dipping nozzle 4 is arranged in the dipping area 6, and the heating nozzle 5 is arranged in the heating area 7. Inside the processing cover 2, there are several workstations. The dipping nozzle 4 and the heating nozzle 5 are arranged at the workstations. The transmission assembly 3 includes a first circulating conveyor chain 8 and a second circulating conveyor chain 9. The first circulating conveyor chain 8 and the second circulating conveyor chain 9 are respectively provided with a first jaw assembly 10 and a second jaw assembly 11. The first jaw assembly 10 and the second jaw assembly 11 alternately clamp the stator 90. The first circulating conveyor chain 8 and the second circulating conveyor chain 9 have the same structure, including a chain and a motor driving its rotation. The motor drives the chain to rotate cyclically and drives the stator 90 to move between workstations. The chain length of the first circulating conveyor chain 8 is longer than that of the second circulating conveyor chain 9, and one side is exposed outside the processing cover 2 for convenient loading.

[0028] The first jaw assembly 10 and the second jaw assembly 11 have the same structure, including a base shaft 12, a rotating shaft 13, and three jaw heads 14. The base shaft 12 is fixedly arranged on the first circulating conveyor chain 8. The rotating shaft 13 is arranged inside the base shaft 12. The jaw heads 14 are arranged in an annular array on the rotating shaft 13. It also includes a pushing structure 15 for driving the jaw heads 14 to expand and contract, a rotating structure 16 for driving the rotating shaft 13 to rotate, and a clamping structure 17 for driving the jaw heads 14 to open and close.

[0029] A sliding base 18 is fixedly arranged on the transport rack 1. A sliding groove 19 is formed on the sliding base 18. The base shaft 12 slides in the sliding groove 19. The rotating structure 16 includes a first rotating motor 20 arranged inside the sliding base 18. The output end of the first rotating motor 20 is provided with a single - character clamping block 21. The tail of the rotating shaft 13 is provided with a single - character clamping groove 22. When the chain drives the base shaft 12 to move to the side of the first rotating motor 20, the single - character clamping block 21 can be inserted into the single - character clamping groove 22. At this time, the first rotating motor 20 can drive the rotating shaft 13 to rotate.

[0030] The material pushing structure 15 includes an air passage one 23, an air passage two 24, and a push rod 25. The air passage one 23 is arranged inside the sliding base 18, the air passage two 24 is arranged inside the base shaft 12 and the rotating shaft 13. A sliding hole one 26 is formed inside the rotating shaft 13. The push rod 25 is slidably arranged inside the sliding hole one 26. A cavity one 27 is arranged between the push rod 25 and the rotating shaft 13. When the chain drives the base shaft 12 to move to the working position, the air passage one 23 is communicated with the air passage two 24. By conveying or extracting gas into the cavity one 27 through the air passage one 23 and the air passage two 24, the movement of the push rod 25 can be realized. A limiting sliding groove 28 is formed at the upper end of the push rod 25. A limiting column 29 is fixedly arranged on the rotating shaft 13 and slidably arranged inside the limiting sliding groove 28 to prevent the push rod 25 from separating from the sliding hole one 26.

[0031] The material clamping structure 17 includes a conical block 30, a conical rod 31, and an air passage group 32. A counterbore 33 is formed at the end of the push rod 25. The conical block 30 is arranged inside the counterbore 33. An end cover for restricting the conical block 30 from separating from the counterbore 33 is also arranged inside the counterbore 33. Three vertical holes 34 are arranged in an annular array on the side end of the push rod 25. The conical rod 31 is slidably arranged inside the vertical holes 34. Slanting surfaces are arranged at the tails of both the conical block 30 and the conical rod 31. When the conical block 30 moves, it can drive. The air passage group 32 is used to drive the conical block 30 to move upward and jack up the conical rod 31. The claw head 14 is arranged on the conical rod 31. Limiting vertical rods 35 are also arranged in an annular array on the side end of the push rod 25. The tail of the claw head 14 is slidably matched with the limiting vertical rods 35. A top ring 36 is arranged at the top of the limiting vertical rods 35. A spring 37 is also arranged between the top ring 36 and the claw head 14. The spring 37 presses against the claw head 14 and generates a downward force. When the conical block 30 retracts, the spring 37 drives the claw head 14 to close inward.

[0032] The air passage group 32 includes an air passage three 38, an air passage four 39, and an air passage five 40. A sliding hole two 41 is arranged inside the push rod 25. An inner rod 42 is arranged inside the sliding hole two 41. The inner rod 42 is fixed by threads and is slidably matched with the sliding hole two 41. The air passage three 38 is formed inside the sliding base 18, the air passage four 39 is formed inside the base shaft 12, the air passage five 40 is formed inside the rotating shaft 13. An air passage six 43 is formed inside the inner rod 42. The air passage three 38, the air passage four 39, the air passage five 40, and the air passage six 43 are communicated. When the base shaft 12 moves to the working position, the opening and closing of the clamping jaws can be driven by air pressure. By arranging the inner rod 42, when the push rod 25 extends, the air passage two 24 and the air passage five 40 are separated by the inner rod 42 to prevent communication between the air passage five 40 and the air passage two 24, making the two gas flow channels independent and increasing the sliding accuracy of the push rod 25 at the same time.

[0033] A paint collecting plate 44 is also arranged outside the base shaft 12. When the material pushing structure 15 drives the first clamping jaw assembly 10 to move back, the coil facing the heating nozzle 5 moves to the outside of the paint collecting plate 44, so as to prevent the insulating paint from dripping onto the base shaft 12 when curing the insulating paint with hot air.

[0034] The paint dripping process of the stator 90 is as follows: Install the stator 90 on the first jaw assembly 10, send the stator 90 into the processing cover 2 through the first circulating conveyor chain 8, and move it to the processing station. At this time, the second jaw assembly 11 follows the first jaw assembly 10 to move to the processing station together, and the one-word card block 21 can be clamped into the one-word card slot 22. Then, preheat the coil on the left side of the stator 90. After the heating is completed, push out the stator 90 through the pushing structure 15 of the first jaw assembly 10. At the same time, the pushing structure 15 and the clamping structure 17 of the second jaw assembly 11 clamp the stator 90. Then, the clamping structure 17 of the first jaw assembly 10 is loosened, and the stator 90 can be moved from the first jaw assembly 10 to the second jaw assembly 11. Then, preheat the coil on the right side of the stator 90 through the heating nozzle 5 at the upper end of the second jaw assembly 11. At the same time, the paint dripping nozzle 4 in the paint dripping area 6 drips paint towards the coil on the left side of the stator 90. During the preheating and paint dripping process, the first rotating motor 20 is always in a rotating state to throw out the excess insulating paint. After the paint dripping and preheating are completed, the second jaw assembly 11 drives the stator 90 to move to the next station and exchanges the stator 90 back to the first jaw assembly 10. At this time, the coil on the left side of the stator 90 moves to the heating area 7 and is outside the paint collecting plate 44, and the coil on the right side enters the paint dripping area 6 for paint dripping. After completion, repeating the above steps can achieve double-sided paint dripping.

[0035] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A motor stator paint dripping process, characterized in that: include: S1: Checking the state of the stator (90) to see if there are any defects in the stator (90); S2: Testing equipment, testing whether the paint dripping device can operate normally and whether the insulating paint raw materials are sufficient; S3: Loading, installing the stator (90) on the clamping jaws of the paint dripping device; S4: pre-baking on the left side, pre-heating the stator (90) through the paint dripping device; S5: dripping paint on the left side for the first time, dripping paint on the left coil of the stator (90), the revolution time of the paint dripping is 18-23 seconds, the amount of paint dripping is 45-50 grams, and the right coil of the stator (90) is pre-baked at the same time; S6: Firstly, paint is dripped on the right side. The stator (90) is mounted on the clamping claw on the other side by means of a paint dripping device, and paint is dripped on the right coil of the stator (90). The paint dripping revolution time is 18-23 seconds, and the paint dripping amount is 45-50 grams. At the same time, the paint on the left coil of the stator (90) is heated and cured. The curing temperature is 130° C.-140° C.; S7: dripping paint on the left side for the second time, dripping paint on the left coil of the stator (90) for the second time, the paint dripping revolution time is 18-23 seconds, the paint dripping amount is 45-50 grams, and at the same time, the right coil of the stator (90) is heated and cured, and the curing temperature is 130° C.-140° C.; S8: dripping paint on the right side for the second time, dripping paint on the right coil of the stator (90) for the second time, the revolution time of the paint dripping is 18-23 seconds, the amount of paint dripping is 45-50 grams, and at the same time, the left coil of the stator (90) is heated and cured for the second time, and the curing temperature is 135° C.-145° C.; S9: right side curing, performing secondary heating curing on the right side coil of the stator (90), the curing temperature being 135° C.-145° C.; S10: cutting; S11: Check whether the winding is completely cured, dripping is uniform and leak-free, the slot is not loose, there is no paint nodule on the inner and outer circles of the core and the surface of the stop, and the insulating paper is not burnt yellow.

2. A paint dripping device used in the motor stator paint dripping process as claimed in claim 1, characterized in that: The invention comprises a transport frame (1), a processing cover (2), a transmission assembly (3), a paint dripping nozzle (4) and a heating nozzle (5), wherein the processing cover (2) is fixed on the transport frame (1), the transmission assembly (3) is arranged on the transport frame (1), a paint dripping area (6) and a heating area (7) are arranged in the processing cover (2), the paint dripping nozzle (4) is arranged in the paint dripping area (6), and the heating nozzle (5) is arranged in the heating area (7), the transmission assembly (3) comprises a circulating conveying chain 1 (8) and a circulating conveying chain 2 (9), and a first clamping jaw assembly (10) and a second clamping jaw assembly (11) are respectively arranged on the circulating conveying chain 1 (8) and the circulating conveying chain 2 (9), and the first clamping jaw assembly (10) and the second clamping jaw assembly (11) alternately clamp a stator (90).

3. The paint dripping device according to claim 2 is characterized in that: The first clamping jaw assembly (10) has the same structure as the second clamping jaw assembly (11). The first clamping jaw assembly (10) comprises a base shaft (12), a rotating shaft (13) and three claw heads (14). The base shaft (12) is fixedly arranged on a circulating conveying chain (8). The rotating shaft (13) is arranged inside the base shaft (12). The claw heads (14) are arranged in a ring array on the rotating shaft (13). The first clamping jaw assembly (10) also comprises a pushing structure (15) for driving the claw heads (14) to extend and retract, a rotating structure (16) for driving the rotating shaft (13) to rotate and a clamping structure (17) for driving the claw heads (14) to open and close.

4. The paint dripping device according to claim 3 is characterized in that: A sliding base (18) is fixedly arranged on the transport frame (1), a sliding groove (19) is provided on the sliding base (18), the base shaft (12) slides in the sliding groove (19), the rotating structure (16) comprises a rotating motor (20) arranged in the sliding base (18), a straight-line clamping block (21) is arranged at the output end of the rotating motor (20), and a straight-line clamping groove (22) is arranged at the tail of the rotating shaft (13), and when the straight-line clamping block (21) is clamped in the straight-line clamping groove (22), the rotating motor (20) can drive the rotating shaft (13) to rotate.

5. The paint dripping device according to claim 4 is characterized in that: The pushing structure (15) comprises an air channel 1 (23), an air channel 2 (24) and a push rod (25); the air channel 1 (23) is arranged in a sliding base (18); the air channel 2 (24) is arranged in a base shaft (12) and a rotating shaft (13); a sliding hole 1 (26) is provided in the rotating shaft (13); the push rod (25) is slidably arranged in the sliding hole 1 (26); a cavity 1 (27) is provided between the push rod (25) and the rotating shaft (13); the air channel 1 (23), the air channel 2 (24) and the cavity 1 (27) are connected; a limiting sliding groove (28) is provided at the upper end of the push rod (25); a limiting column (29) is fixedly provided on the rotating shaft (13) and slides in the limiting sliding groove (28).

6. The paint dripping device according to claim 5 is characterized in that: The clamping structure (17) comprises a cone block (30), a cone rod (31) and an airway group (32); a countersunk hole (33) is provided at the end of the push rod (25); the cone block (30) is arranged in the countersunk hole (33); three vertical holes (34) are provided at the side end of the push rod (25); the cone rod (31) is slidably arranged in the vertical holes (34); the tails of the cone block (30) and the cone rod (31) are both provided with inclined surfaces; the airway group (32) is used to drive the cone block (30) to a certain position and lift the cone rod (31); and the claw head (14) is arranged on the cone rod (31).

7. The paint dripping device according to claim 6, characterized in that: The airway group (32) includes airway three (38), airway four (39) and airway five (40), the push rod (25) is provided with a sliding hole two (41), the sliding hole two (41) is provided with an inner rod (42), the inner rod (42) is fixedly arranged in the rotating shaft (13) and slidingly cooperates with the sliding hole two (41), the airway three (38) is opened in the sliding base (18), the airway four (39) is opened in the base shaft (12), the airway five (40) is opened in the rotating shaft (13), the inner rod (42) is provided with an airway six (43), and the airway three (38), airway four (39), airway five (40) and airway six (43) are connected.

8. The paint dripping device according to claim 3 is characterized in that: A paint collecting plate (44) is also arranged on the outside of the base shaft (12); when the pushing structure (15) drives the first clamping jaw assembly (10) to move back, the coil moves to the outside of the paint collecting plate (44).

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