Automatic paint dipping device for motor stator coil

Abstract

The invention relates to the field of motor coil production, and discloses a motor stator coil automatic paint dipping device which comprises a machine shell and a paint dipping mechanism arranged in the machine shell, the outer surface of the machine shell is further provided with an inlet and outlet, and the paint dipping mechanism comprises a mounting frame body. A traction assembly, a suspension assembly, a paint dipping pool, a drying assembly and a liquid supplementing assembly are arranged on the mounting frame body, the suspension assembly is used for placing a motor stator coil, the traction assembly is used for dragging the suspension assembly and the motor stator coil to pass through the inlet and outlet, the paint dipping pool and the drying assembly, and the drying assembly is used for drying the motor stator coil after paint dipping. When the suspension assembly is located at the highest point of the synchronous belt set, the suspension assembly pulls the motor stator coil to move downwards in an accelerated mode and enter the dipping pool, and meanwhile the liquid supplementing assembly is started to inject new paint liquid into the dipping pool from the bottom of the dipping pool.

Description

Technical Field

[0001] The invention relates to the field of motor production, in particular to the field of motor coil production, and in particular to an automatic paint dipping device for a motor stator coil. Background Art

[0002] During the production process, the stator coil of the motor needs to go through a paint dipping process. The paint dipping process can fill the gaps between adjacent coils and the gaps between the coils and the stator with insulating paint, thereby improving the moisture resistance, insulation and heat dissipation performance of the motor windings. However, during the paint dipping process, since the gaps between adjacent coils are very small, it is easy for the paint liquid to have difficulty flowing into the gaps, resulting in a poor paint dipping effect for the coils, or a longer time is required to complete the paint dipping step. Both the poor paint dipping effect and the low paint dipping efficiency need to be improved. Based on this, the present invention proposes an automatic paint dipping device for motor stator coils. Summary of the invention

[0003] In order to solve the problems mentioned in the above background, the present invention provides an automatic paint dipping device for motor stator coils.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0005] A motor stator coil automatic paint dipping device comprises a casing and a paint dipping mechanism arranged in the casing, the outer surface of the casing is also provided with an inlet and outlet, the paint dipping mechanism comprises a mounting frame, the mounting frame is provided with a traction component, a suspension component, a paint dipping tank, a drying component and a liquid replenishing component, the suspension component is used for placing the motor stator coil, the traction component is used for pulling the suspension component and the motor stator coil through the inlet and outlet, the paint dipping tank and the drying component, the paint dipping tank is used for providing paint liquid for paint dipping, the drying component is used for drying the motor stator coil after paint dipping, and when the motor stator coil enters the paint dipping tank, the liquid replenishing component is used for injecting paint liquid into the paint dipping tank from the bottom of the paint dipping tank.

[0006] As a further improvement and optimization of the present invention, the traction assembly includes a synchronous belt group and a driving motor for driving the synchronous belt group to operate. The axis of the pulley of the synchronous belt group is arranged horizontally and the two pulleys of the synchronous belt group are arranged in the vertical direction. Two synchronous belt groups are arranged along the axis direction of the pulley.

[0007] As a further improvement and optimization of the present invention, four suspension assemblies are provided along the extension direction of the synchronous belt set.

[0008] As a further improvement and optimization of the present invention, the suspension assembly includes a connecting bracket, and a connecting shaft is respectively provided at both ends of the connecting bracket, the axis of the connecting shaft is parallel to the axis of the pulley of the synchronous belt group, and the two connecting shafts are respectively movably connected with the synchronous belt of the synchronous belt group;

[0009] A vertically arranged linear screw stepper motor is arranged on the connecting bracket, a suspension seat is arranged at the lower end of the output shaft of the linear screw stepper motor, a suspension bracket is detachably mounted on the suspension seat, the suspension bracket is used to place the motor stator coil, and a plurality of suspension brackets are arranged in an array along the length direction of the suspension seat.

[0010] As a further improvement and optimization of the present invention, a suspension pin is provided at the upper end of the suspension bracket, and a suspension hole is provided on the suspension seat. The suspension hole includes a through hole and a support groove distributed along the length direction of the suspension seat. The suspension pin can pass through the through hole from bottom to top. A connecting port is provided between the through hole and the support groove. The connecting port is used to avoid the upper end of the suspension bracket and allow the suspension pin to be supported by the support groove.

[0011] As a further improvement and optimization of the present invention, an arc surface for placing the motor stator coil is provided on the suspension bracket, the arc surface is bent upward, and a plurality of convex pins are distributed in an array on the upper arc surface of the arc surface.

[0012] As a further improvement and optimization of the present invention, the paint immersion pool includes a fixed bracket connected to the mounting frame, a pool body is slidably mounted on the fixed bracket along the vertical direction, a connecting nozzle and a vibrator are provided at the bottom of the pool body, and a spring is respectively provided on the upper and lower sides of the connection between the fixed bracket and the pool body.

[0013] As a further improvement and optimization of the present invention, the liquid replenishment component includes a liquid storage tank and a water pump. The liquid storage tank and the liquid inlet end of the water pump are connected through a liquid inlet pipe, and the liquid outlet end of the water pump and the connecting nozzle are connected through a liquid outlet pipe. A liquid discharge pipe is also provided on the liquid outlet pipe, and a solenoid valve is provided on the liquid discharge pipe.

[0014] As a further improvement and optimization of the present invention, the drying component includes a liquid receiving bucket arranged on the upper surface of the liquid storage tank, and the upper surface of the liquid storage tank is provided with a connecting hole connected to the liquid receiving bucket, the synchronous belt group and the four suspension components are all located below the opening on the liquid receiving bucket, and a drying element is arranged upward on both sides of the opening on the liquid receiving bucket along the center line direction of the motor stator coil placed on the suspension component.

[0015] As a further improvement and optimization of the present invention, when the suspension assembly is located at the highest point of the synchronous belt group, the linear screw stepper motor drives the suspension seat to accelerate downward movement, and the suspension seat accelerates downward movement together with the suspension bracket and the motor stator coil. At the same time, the water pump starts to inject the paint liquid in the liquid storage tank into the paint immersion tank.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This solution can achieve continuous and uninterrupted varnishing treatment of the motor stator coil, on this basis:

[0018] During the paint dipping operation, the motor stator coil is first driven to accelerate downward and enter the paint liquid. At the same time, the water pump pulls the paint liquid from bottom to top to replenish the paint dipping tank. On the one hand, the purpose of replenishing the liquid is achieved. On the other hand, the fast flow rate of replenishing the liquid can make the paint liquid in the paint dipping tank flow and fluctuate up and down, which can play a stirring role to prevent the paint liquid in the paint dipping tank from settling. On the other hand, the ups and downs of the paint liquid cooperate with the accelerated downward movement of the motor stator coil, which can make the paint liquid enter the coil gap faster and easier, thereby improving the paint dipping effect and paint dipping efficiency;

[0019] Afterwards, through the reciprocating movement of the synchronous belt group, the motor stator coil moves in an arc trajectory in the paint liquid. The arc trajectory movement can stir the paint liquid and allow the paint liquid to enter the coil gap, and the effects of these effects are more obvious. In addition, the reciprocating movement of the synchronous belt group will also cause the motor stator coil at the draining position to move up and down, thereby improving the draining effect, and will also cause the motor stator coil at the drying position to move back and forth in an arc trajectory, thereby improving the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the paint dipping mechanism;

[0022] Figure 3 is a schematic diagram of a traction component and a suspension component;

[0023] Figure 4 is a structural schematic diagram of a suspension assembly;

[0024] Figure 5 is a schematic diagram of a suspension seat and a suspension bracket;

[0025] Figure 6 It is a schematic diagram of the paint dipping tank, drying component and liquid replenishing component;

[0026] Figure 7 It is a structural schematic diagram of the paint dipping pool.

[0027] The reference numerals in the accompanying drawings are:

[0028] 100, housing; 101, inlet and outlet; 200, mounting frame; 201, synchronous belt set; 202, driving motor; 203, suspension assembly; 2031, connecting bracket; 2032, connecting shaft; 2033, linear screw stepper motor; 2034, suspension seat; 2035, suspension bracket; 2036, suspension pin; 2037, convex pin; 2038, suspension hole; 204, varnish immersion tank; 2041, fixing bracket; 2042, tank body; 2043, spring; 2044, connecting nozzle; 2045, vibrator; 205, liquid storage tank; 206, water pump; 2061, liquid inlet pipe; 2062, liquid outlet pipe; 2063, liquid discharge pipe; 207, drying assembly; 2071, liquid receiving bucket; 2072, drying element. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] Reference Figure 1-Figure 7 An automatic paint dipping device for a motor stator coil comprises a housing 100 and a paint dipping mechanism arranged in the housing 100. The outer surface of the housing 100 is also provided with an inlet and outlet 101 for placing the motor stator coil to be painted or taking away the motor stator coil that has been painted. A in the accompanying drawings of this scheme refers to the motor stator coil.

[0031] The paint dipping mechanism includes a mounting frame 200, on which a traction assembly, a suspension assembly 203, a paint dipping pool 204 and a drying assembly 207 are provided, wherein there are four positions in the housing 100, namely, an entry and exit position, a paint dipping position, a draining position and a drying position, wherein the inlet and outlet 101 is located at the entry and exit position, the paint dipping pool 204 is located at the paint dipping position, the drying assembly 207 is located at the drying position, and the draining position is located between the paint dipping position and the drying position.

[0032] When in use, the motor stator coil is detachably placed through the suspension component 203, and the suspension component 203 is pulled by the traction component to be located at four positions in sequence, the paint dipping process is completed at the paint dipping position, the draining process is completed at the draining position, the drained paint liquid is collected and reused, the drying process is completed at the drying position, and finally the motor stator coil is taken away at the entry and exit position, and the next batch of motor stator coils is placed.

[0033] Furthermore, a liquid replenishing component is also provided on the mounting frame 200. After each paint dipping process is completed, the paint liquid in the paint dipping pool 204 needs to be replenished through the liquid replenishing component. In addition to replenishing the paint liquid, the liquid replenishing component can also enhance the paint dipping effect and paint dipping efficiency, which will be explained in detail later.

[0034] Reference Figure 2 and Figure 3 The traction component includes a synchronous belt group 201, the pulley axis of the synchronous belt group 201 is arranged horizontally and the two pulleys of the synchronous belt group 201 are arranged in the vertical direction. The synchronous belt group 201 is provided with two along the axis direction of the pulley. The synchronous belt group 201 is driven to move by a driving motor 202, and the driving motor 202 is arranged on the mounting frame 200. In addition, in addition to the synchronous belt group 201, the synchronous belt group 201 can also be replaced by conveyor belt technology, chain sprocket technology, etc., which will not be elaborated.

[0035] Reference Figure 2 , Figure 4 and Figure 5 Four suspension components 203 are arranged along the extension direction of the synchronous belt group 201. The cooperation of the four suspension components 203 can realize the uninterrupted and continuous varnishing treatment of the motor stator coil, which can improve the varnishing efficiency.

[0036] The suspension component 203 includes a connecting bracket 2031, and a connecting shaft 2032 is respectively provided at both ends of the connecting bracket 2031. The axis line of the connecting shaft 2032 is parallel to the axis line of the pulley of the synchronous belt group 201. The two connecting shafts 2032 are respectively movably connected with the synchronous belt of the synchronous belt group 201. Therefore, in the process of pulling the suspension component 203 to move through the synchronous belt group 201, the suspension component 203 only moves without deflecting.

[0037] A vertically arranged linear screw stepper motor 2033 is disposed on the connecting bracket 2031 , a suspension seat 2034 is disposed at the lower end of the output shaft of the linear screw stepper motor 2033 , and the suspension seat 2034 and the connecting bracket 2031 are both horizontally arranged.

[0038] A suspension bracket 2035 is detachably mounted on the suspension seat 2034, and a plurality of suspension brackets 2035 are arranged in an array along the length direction of the suspension seat 2034. Furthermore, a suspension pin 2036 is arranged at the upper end of the suspension bracket 2035, and a suspension hole 2038 is arranged on the suspension seat 2034. The suspension hole 2038 includes a through hole and a support groove distributed along the length direction of the suspension seat 2034. The suspension pin 2036 can pass through the through hole from bottom to top, and a connecting port is arranged between the through hole and the support groove. The connecting port is used to avoid the upper end of the suspension bracket 2035 and allow the suspension pin 2036 to be supported by the support groove. Furthermore, a plurality of suspension pins 2036 are arranged on the suspension bracket 2035, and a plurality of suspension holes 2038 are arranged correspondingly to ensure suspension stability.

[0039] The suspension bracket 2035 is provided with an arc surface for placing the motor stator coil, and the arc surface is bent upward. Furthermore, a plurality of protruding pins 2037 are distributed in an array on the upper arc surface. The significance of this is that the motor stator coil is supported by a plurality of protruding pins 2037, and there is point contact between the protruding pins 2037 and the motor stator coil to avoid blocking the motor stator coil and causing incomplete paint immersion.

[0040] Reference Figure 6 and Figure 7 The paint dipping pool 204 includes a fixed bracket 2041 connected to the mounting frame 200, a pool body 2042 is slidably mounted on the fixed bracket 2041 along the vertical direction, a connecting nozzle 2044 and a vibrator 2045 are provided at the bottom of the pool body 2042, and a spring 2043 is respectively provided on the upper and lower sides of the connection between the fixed bracket 2041 and the pool body 2042.

[0041] Reference Figure 6 The liquid replenishing component includes a liquid storage tank 205 and a water pump 206. The liquid storage tank 205 and the liquid inlet end of the water pump 206 are connected via a liquid inlet pipe 2061, and the liquid outlet end of the water pump 206 and the connecting nozzle 2044 are connected via a liquid outlet pipe 2062. A liquid discharge pipe 2063 is also provided on the liquid outlet pipe 2062, and a solenoid valve is provided on the liquid discharge pipe 2063.

[0042] The drying component 207 includes a liquid receiving hopper 2071 arranged on the upper surface of the liquid storage tank 205, and the upper surface of the liquid storage tank 205 is provided with a connecting hole connected to the liquid receiving hopper 2071. The synchronous belt group 201 and the four suspension components 203 are all located below the opening of the liquid receiving hopper 2071. A drying element 2072 is arranged upward on both sides of the opening of the liquid receiving hopper 2071 along the center line direction of the motor stator coil placed on the suspension component 203. Furthermore, the temperature between the two drying elements 2072 is relatively high, which can achieve the purpose of drying. The drying elements 2072 can be realized by using existing electric heating technology, which will not be elaborated.

[0043] Working principle of the present invention:

[0044] Reference Figure 2 The highest point of the synchronous belt group 201 is the paint dipping position, the lowest point of the synchronous belt group 201 is the drying position, the inlet and outlet 101 is the entry and exit position, the entry and exit position and the draining position are located on both sides of the synchronous belt group 201 respectively, and the four suspension components 203 cooperate to achieve continuous and uninterrupted paint dipping. Now take the paint dipping process of one of the suspension components 203 as an example to explain:

[0045] The motor stator coil is placed on the arc surface of the suspension bracket 2035, and can be placed manually or by using existing robotic arm technology;

[0046] Remove the suspension bracket 2035 on which the motor stator coil that has been dipped in paint is placed at the inlet and outlet 101, and then hang the suspension bracket 2035 on which the motor stator coil to be dipped in paint is placed on the suspension seat 2034;

[0047] Then, the synchronous belt set 201 is driven by the driving motor 202 to move the suspension assembly 203 from the entry and exit position to the paint dipping position. At this time, the motor stator coil on the suspension assembly 203 is located above the paint dipping pool 204.

[0048] The linear screw stepper motor 2033 drives the suspension seat 2034 to move downward at an accelerated speed, and the suspension seat 2034 moves downward with the suspension bracket 2035 and the motor stator coil. At the same time, since the paint liquid was consumed in the last paint immersion, the liquid level of the paint immersion pool 204 has decreased. Therefore, the water pump 206 is started to pull the paint liquid in the liquid storage tank 205 to flow into the paint immersion pool 204 at a faster flow rate. On the one hand, the purpose of liquid replenishment is achieved. On the other hand, the fast liquid replenishment action can make the paint liquid in the paint immersion pool 204 flow, fluctuate up and down, and can play a stirring role, preventing the paint immersion pool 204 from 04, the paint liquid in the paint liquid is precipitated. On the one hand, the ups and downs of the paint liquid and the accelerated downward movement of the motor stator coil can make the paint liquid enter the coil gap faster and easier, thereby improving the immersion effect and efficiency. It should be noted that the motor stator coil is accelerated downward, and after being immersed in the paint liquid, the motor stator coil gradually slows down to a stop, and then the synchronous belt group 201 can be reciprocated to move the motor stator coil in the paint liquid in an arc-shaped trajectory. The arc-shaped trajectory movement can play a stirring role and make the paint liquid enter the coil gap, and the effects of these effects are more obvious;

[0049] After a preset time, the linear screw stepper motor 2033 pulls the suspension seat 2034 to move upward, so that the motor stator coil leaves the paint immersion tank 204;

[0050] The synchronous belt assembly 201 continues to move, pulling the suspension assembly 203 to the draining position for draining, and the paint liquid that falls after draining is received by the liquid receiving hopper 2071 and guided into the liquid storage tank 205;

[0051] After the preset time, the synchronous belt group 201 continues to move, pulling the suspension assembly 203 to the drying position for drying;

[0052] After a preset time, the synchronous belt set 201 continues to move, pulling the suspension assembly 203 to the in-and-out position.

[0053] It should be noted that since the present solution realizes continuous and uninterrupted paint dipping through four suspension components, at the beginning of the paint dipping action at the paint dipping position, the entry and exit positions simultaneously take out the dipped coils and place the coils to be dipped in paint. After completion, the synchronous belt group 201 moves back and forth to carry the coils in an arc trajectory in the paint liquid.

[0054] From the above description, we can know that:

[0055] This solution can achieve continuous and uninterrupted varnishing treatment of the motor stator coil, on this basis:

[0056] During the paint dipping operation, the motor stator coil is first driven to accelerate downward and enter the paint liquid. At the same time, the water pump pulls the paint liquid from bottom to top to replenish the paint dipping tank. On the one hand, the purpose of replenishing the liquid is achieved. On the other hand, the fast flow rate of replenishing the liquid can make the paint liquid in the paint dipping tank flow and fluctuate up and down, which can play a stirring role to prevent the paint liquid in the paint dipping tank from settling. On the other hand, the ups and downs of the paint liquid cooperate with the accelerated downward movement of the motor stator coil, which can make the paint liquid enter the coil gap faster and easier, thereby improving the paint dipping effect and paint dipping efficiency;

[0057] Afterwards, through the reciprocating movement of the synchronous belt group, the motor stator coil moves in an arc trajectory in the paint liquid. The arc trajectory movement can stir the paint liquid and allow the paint liquid to enter the coil gap, and the effects of these effects are more obvious. In addition, the reciprocating movement of the synchronous belt group will also cause the motor stator coil at the draining position to move up and down, thereby improving the draining effect, and will also cause the motor stator coil at the drying position to move back and forth in an arc trajectory, thereby improving the drying effect.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic varnish dipping device for a motor stator coil, comprising a housing (100) and a varnish dipping mechanism arranged in the housing (100), wherein an inlet and outlet (101) are arranged on the outer surface of the housing (100), characterized in that: The paint dipping mechanism comprises a mounting frame (200), on which a traction component, a suspension component (203), a paint dipping tank (204), a drying component (207) and a liquid replenishing component are arranged. The suspension component (203) is used to place a motor stator coil. The traction component is used to pull the suspension component (203) and the motor stator coil through an inlet and outlet (101), a paint dipping tank (204) and a drying component (207). The paint dipping tank (204) is used to provide paint liquid for paint dipping. The drying component (207) is used to dry the motor stator coil after paint dipping. When the motor stator coil enters the paint dipping tank (204), the liquid replenishing component is used to inject paint liquid into the paint dipping tank (204) from the bottom of the paint dipping tank (204).

2. The automatic paint dipping device for motor stator coils according to claim 1, characterized in that: The traction assembly comprises a synchronous belt group (201) and a driving motor (202) for driving the synchronous belt group (201) to operate. The pulley axis of the synchronous belt group (201) is arranged horizontally and the two pulleys of the synchronous belt group (201) are arranged in a vertical direction. Two synchronous belt groups (201) are arranged along the pulley axis direction.

3. The automatic paint dipping device for motor stator coils according to claim 2, characterized in that: Four suspension components (203) are arranged along the extension direction of the synchronous belt set (201).

4. The automatic varnish dipping device for motor stator coils according to claim 2 or 3, characterized in that: The suspension assembly (203) comprises a connecting bracket (2031), and each of the two ends of the connecting bracket (2031) is provided with a connecting shaft (2032), the axis center line of the connecting shaft (2032) is parallel to the axis center line of the pulley of the synchronous belt assembly (201), and the two connecting shafts (2032) are respectively movably connected to the synchronous belt of the synchronous belt assembly (201); A vertically arranged linear screw stepper motor (2033) is arranged on the connecting bracket (2031); a suspension seat (2034) is arranged at the lower end of the output shaft of the linear screw stepper motor (2033); a suspension bracket (2035) is detachably mounted on the suspension seat (2034); the suspension bracket (2035) is used to place the stator coil of the motor; a plurality of suspension brackets (2035) are arranged in an array along the length direction of the suspension seat (2034).

5. The automatic paint dipping device for motor stator coils according to claim 4, characterized in that: A suspension pin (2036) is provided at the upper end of the suspension bracket (2035), and a suspension hole (2038) is provided on the suspension seat (2034). The suspension hole (2038) includes a through hole and a support groove distributed along the length direction of the suspension seat (2034). The suspension pin (2036) can pass through the through hole from bottom to top. A connecting port is provided between the through hole and the support groove. The connecting port is used to avoid the upper end of the suspension bracket (2035) and allow the suspension pin (2036) to be supported by the support groove.

6. The automatic varnish dipping device for motor stator coils according to claim 4, characterized in that: The suspension bracket (2035) is provided with an arc surface for placing the stator coil of the motor, the arc surface is bent upward, and a plurality of convex pins (2037) are distributed in an array on the upper arc surface of the arc surface.

7. The automatic paint dipping device for motor stator coils according to claim 4, characterized in that: The paint immersion pool (204) comprises a fixed bracket (2041) connected to a mounting frame (200); a pool body (2042) is slidably mounted on the fixed bracket (2041) in a vertical direction; a connecting nozzle (2044) and a vibrator (2045) are arranged at the bottom of the pool body (2042); and a spring (2043) is respectively arranged on the upper and lower sides of the connection between the fixed bracket (2041) and the pool body (2042).

8. The automatic paint dipping device for motor stator coils according to claim 7, characterized in that: The liquid replenishing component comprises a liquid storage tank (205) and a water pump (206); the liquid storage tank (205) and the liquid inlet end of the water pump (206) are connected via a liquid inlet pipe (2061); the liquid outlet end of the water pump (206) and the connecting nozzle (2044) are connected via a liquid outlet pipe (2062); a liquid discharge pipe (2063) is also provided on the liquid outlet pipe (2062), and a solenoid valve is provided on the liquid discharge pipe (2063).

9. The automatic paint dipping device for motor stator coils according to claim 8, characterized in that: The drying component (207) comprises a liquid receiving hopper (2071) arranged on the upper surface of the liquid storage box (205), and the upper surface of the liquid storage box (205) is provided with a connection hole connected to the liquid receiving hopper (2071), the synchronous belt group (201) and the four suspension components (203) are all located below the upper opening of the liquid receiving hopper (2071), and a drying element (2072) is arranged on both sides of the upper opening of the liquid receiving hopper (2071) along the center line direction of the motor stator coil placed on the suspension component (203) and facing upward.

10. The automatic varnish dipping device for motor stator coils according to claim 8, characterized in that: When the suspension assembly (203) is located at the highest point of the synchronous belt assembly (201), the linear screw stepper motor (2033) drives the suspension seat (2034) to accelerate downward movement, and the suspension seat (2034) accelerates downward movement together with the suspension bracket (2035) and the motor stator coil. At the same time, the water pump (206) is started to inject the paint liquid in the liquid storage tank (205) into the paint immersion pool (204).

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