A surface painting device for motor processing

Abstract

The present invention discloses a surface painting device for motor processing, which relates to the field of motor processing equipment and includes a protective cover. An air suction disc is fixedly installed on the inner wall of the protective cover, and a negative pressure pipe is fixedly installed on the air suction disc. A rotating paint receiving mechanism is installed inside the protective cover, and a moving painting mechanism is arranged on one side of the rotating paint receiving mechanism. A fixing plate is arranged on the rotating paint receiving mechanism, a connecting column is fixedly arranged at the bottom of the fixing plate, the bottom of the connecting column is fixedly connected with a fixing piece, a hanging ring is arranged at the bottom of the fixing piece, and a connecting rod is suspended on the hanging ring. For this surface painting device for motor processing, the time and amount of paint mist received by each part of the motor shell during the painting process are more uniform, so that the coating thickness on the surface of the motor shell is uniformly consistent, effectively avoiding problems such as too thick or too thin paint layer, sagging, and color spots caused by changes in distance or unstable rotation speed.

Description

Technical Field

[0001] The present invention relates to the field of motor processing equipment, and specifically to a surface painting device for motor processing. Background Art

[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction; its main function is to convert mechanical energy into electrical energy; in the field of motor manufacturing, it is often necessary to spray paint on components such as motor end covers and motor housings to effectively enhance the anti-corrosion performance of the above components. At this time, a corresponding painting device is required; currently, due to limitations in structure and design, the positional relationship between the painting mechanism and the motor housing or end cover is often relatively fixed, which makes the spraying operation on the motor housing insufficient and uneven. At the same time, for motor housings of different sizes, they cannot be conveniently and flexibly fixed on the painting device, which greatly affects the use performance and application range of the painting device.

[0003] To solve the above problems, after searching, the patent with publication number CN209613316U discloses a surface painting device for the outer shell of a motor during processing. The device includes placing the motor housing to be painted between two rotating plates, then turning the handle, which drives the driving pulley to rotate, and then drives the driven pulley to rotate through the action of the belt, thereby causing the screw rod to rotate, so that two limit blocks drive the limit rod to move inward, and then drive the guide block to clamp the motor housing by the rotating plate. After that, start the rotating motor and the paint suction pump. The rotating motor drives the right rotating shaft to rotate, so that the right rotating plate drives the motor housing to rotate synchronously. At the same time, the paint suction pump introduces the paint in the paint tank into the painting chamber through the paint suction pipe, and then sprays it onto the rotating motor housing through the paint nozzle, realizing the efficient painting of the motor housing.

[0004] Although the above device can spray paint on the outside of the motor, when actually in use, a large amount of paint mist is generated when spraying paint on the outside of the motor; the paint mist contains organic solvents and harmful chemical substances such as benzene, toluene, and xylene; if operators inhale these paint mists for a long time, it will cause damage to the respiratory system, nervous system, etc., leading to symptoms such as respiratory diseases, dizziness, fatigue, nausea, etc., seriously affecting physical health. Summary of the Invention

[0005] The purpose of the present invention is to provide a surface painting device for motor processing to solve the defects mentioned in the above background art.

[0006] To achieve the above object, a surface painting device for motor processing is provided, including a protective cover. An air suction disc is fixedly installed on the inner wall of the protective cover. A negative pressure pipe is fixedly installed on the air suction disc. A rotating paint receiving mechanism is installed inside the protective cover. A moving painting mechanism is arranged on one side of the rotating paint receiving mechanism. A fixing plate is arranged on the rotating paint receiving mechanism. A connecting column is fixedly arranged at the bottom of the fixing plate. The bottom of the connecting column is fixedly connected to a fixing piece. A hanging ring is arranged at the bottom of the fixing piece. A connecting rod is suspended on the hanging ring. The bottom of the connecting rod is suspended with a motor housing.

[0007] Further, the air suction disc is a rectangular structure made of plastic material. The end of the negative pressure pipe on the air suction disc is communicated with an exhaust fan. The air suction disc is installed on the inner wall of the protective cover through a bracket.

[0008] Further, the rotating paint receiving mechanism includes a connecting rod, a hanging ring, a fixing piece, a connecting column, a first belt pulley, a fixing plate, a speed reducer, a belt and a second belt pulley. C-shaped hooks are fixedly arranged at both ends of the connecting rod. The connecting rod is connected to the hanging ring at the top of the motor housing and the hanging ring at the bottom of the fixing piece respectively through the C-shaped hooks at both ends. The top of the motor housing is connected to the hanging ring at the bottom of the first belt pulley through the connecting rod. The motor housing is driven to rotate through the speed reducer, the connecting rod and the hanging ring.

[0009] Further, a shaft rod is welded to the top of the hanging ring arranged at the bottom of the fixing piece for fixed connection with the hanging ring. The upper part of the rotating shaft of the first belt pulley is fixed to the output shaft of the speed reducer. The speed reducer is fixedly connected to the fixing plate through a machine base. A second belt pulley is installed on one side of the first belt pulley. A belt is installed between the second belt pulley and the first belt pulley.

[0010] Further, the fixing plate is arranged in a "U" shape. The two ends of the fixing plate are respectively screwed on the two side walls of the protective cover. Two groups of connecting columns are arranged at the bottom of the fixing plate. Both groups of connecting columns are connected to the fixing piece at the bottom.

[0011] Further, the moving painting mechanism includes a driving shaft, a bearing seat, a fixing frame, a support leg, a driving frame, a reciprocating lead screw, a guide rod, a gun seat, a driving seat and a paint spray gun. A second belt pulley is fixedly installed at the top of the driving shaft. The driving shaft is driven to rotate through the speed reducer, the first belt pulley, the belt and the second belt pulley.

[0012] Further, two groups of bearing seats are respectively installed on the driving shaft. The ends of the bearing seats are respectively screwed on the side wall of the protective cover. At the same time, the bottom of the driving shaft is fixedly connected to the reciprocating lead screw through a coupling. A guide rod is installed above the reciprocating lead screw. The guide rod and the reciprocating lead screw are arranged in parallel. The guide rod and the reciprocating lead screw are both installed inside the driving frame.

[0013] Furthermore, a fixing frame is screwed and installed at the bottom of the driving frame. The fixing frame is rectangular in shape, and four groups of support legs are evenly installed at the bottom of the fixing frame. The bottom of the support legs is screwed to the side wall of the protective cover.

[0014] Furthermore, a driving seat is installed on the reciprocating lead screw inside the driving frame. A guiding hole adapted to the size of the guiding rod is formed on the driving seat, and the guiding rod is inserted into the guiding hole. The driving seat is movably connected inside the driving frame.

[0015] Furthermore, a gun seat is fixedly installed on the surface of the driving seat. An installation hole is formed inside the gun seat. At the same time, a paint spray gun is inserted and fixed inside the installation hole. The end of the paint spray gun is arranged opposite to the motor housing. The paint spray gun performs a lifting operation driven by the gun seat, the driving seat, and the reciprocating lead screw. The paint mist ejected from the paint spray gun sprays the outer surface of the motor housing from top to bottom.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The present invention synchronously realizes the rotation of the motor housing and the lifting of the paint spray gun through a speed reducer, a first belt pulley, a belt, and a second belt pulley. The speed reducer, the first belt pulley, the belt, and the second belt pulley are combined to form the driving member of the device; coordinating and controlling the lifting movement of the paint spray gun and the rotation of the motor housing can ensure that the distance between the paint spray gun and the motor housing always remains relatively stable, and the time and amount of the paint mist received by each part of the motor housing during the painting process are more uniform, so that the coating thickness on the surface of the motor housing is uniform, effectively avoiding problems such as too thick or too thin paint layers, sagging, and color spots caused by changes in distance or unstable rotation speed.

[0018] 2. When the paint spray gun sprays the motor housing, the generated paint mist is blocked inside the protective cover and will not overflow into the workshop. At the same time, under the action of the exhaust fan, a negative pressure is formed inside the negative pressure pipe. Through the setting of the suction disc, the paint mist inside the protective cover is adsorbed; avoiding the situation that operators inhale these paint mists for a long time, which will cause damage to the respiratory system, nervous system, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated herein and constituting part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0020] Figure 1 It is a front view schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a bottom view of the structure of the present invention;

[0022] Figure 3 Top view of the structure of the present invention;

[0023] Figure 4 Rear view of the structure of the present invention;

[0024] Figure 5 Top view of the protective cover and its internal structure of the structure of the present invention;

[0025] Figure 6 Side view of the structure of the present invention Figure 5 ;

[0026] Figure 7 Cross-sectional view of the structure of the present invention Figure 5 ;

[0027] Reference numerals:

[0028] 1. Protective cover; 2. Suction disc; 3. Negative pressure pipe; 4. Motor housing; 5. Rotating paint receiving mechanism; 51. Connecting rod; 52. Hanging ring; 53. Fixed piece; 54. Connecting column; 55. First pulley; 56. Fixed plate; 57. Reducer; 58. Belt; 59. Second pulley; 6. Moving paint spraying mechanism; 61. Driving shaft; 62. Bearing seat; 63. Fixed frame; 64. Support leg; 65. Driving frame; 66. Reciprocating lead screw; 67. Guide rod; 68. Gun seat; 681. Driving seat; 69. Paint spraying gun. Detailed implementation manners

[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments, and are not intended to specifically limit the present invention.

[0030] It should be pointed out that in the specification, it is mentioned that "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes the specific feature, structure or characteristic. In addition, when combining embodiments to describe specific features, structures or characteristics, implementing such features, structures or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0031] Generally, terms can be understood at least in part from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or property in the singular sense, or can be used to describe a combination of features, structures, or properties in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but rather can alternatively, depending at least in part on the context, allow for other factors that may not be explicitly described.

[0032] It can be understood that the meanings of "on", "above", and "over" in the present invention should be interpreted in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but can also include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0033] Furthermore, spatial relative terms such as "beneath", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be correspondingly interpreted similarly.

[0034] Specific Embodiment 1: Please refer to Figures 1-6 The present invention provides a technical solution: a surface painting device for motor processing, including a protective cover 1. A suction disc 2 is fixedly installed on the inner wall of the protective cover 1. A negative pressure pipe 3 is fixedly installed on the suction disc 2. A rotating paint receiving mechanism 5 is installed inside the protective cover 1. A moving painting mechanism 6 is arranged on one side of the rotating paint receiving mechanism 5. A fixing plate 56 is arranged on the rotating paint receiving mechanism 5. A connecting column 54 is fixedly arranged at the bottom of the fixing plate 56. The bottom of the connecting column 54 is fixedly connected to a fixing piece 53. A hanging ring 52 is arranged at the bottom of the fixing piece 53. A connecting rod 51 is hung on the hanging ring 52. The bottom of the connecting rod 51 is hung with a motor housing 4.

[0035] As Figure 1 、 Figure 2 and Figure 3 shown, Specific Embodiment 2: This embodiment is a further limitation of Specific Embodiment 1. The suction disc 2 is a rectangular structure made of plastic material. The end of the negative pressure pipe 3 on the suction disc 2 is communicated with a suction fan. The suction disc 2 is installed on the inner wall of the protective cover 1 through a bracket.

[0036] As Figure 1 shown, Specific Embodiment 3: This embodiment is a further limitation of Specific Embodiment 1. The rotating paint receiving mechanism 5 includes a connecting rod 51, a hanging ring 52, a fixing piece 53, a connecting column 54, a first pulley 55, a fixing plate 56, a speed reducer 57, a belt 58, and a second pulley 59. C-shaped hooks are fixedly arranged at both ends of the connecting rod 51. The connecting rod 51 is connected to the hanging ring 52 at the top of the motor housing 4 and the hanging ring 52 at the bottom of the fixing piece 53 respectively through the C-shaped hooks at both ends; the top of the motor housing 4 is connected to the hanging ring 52 at the bottom of the first pulley 55 through the connecting rod 51, and the motor housing 4 is driven to rotate through the speed reducer 57, the connecting rod 51, and the hanging ring 52.

[0037] As Figure 1 , Figure 2 and Figure 3 shown, Specific Embodiment 4: This embodiment is a further limitation of Specific Embodiment 3. A shaft rod is welded to the top of the hanging ring 52 arranged at the bottom of the fixing piece 53. The shaft rod at the top of the hanging ring 52 is fixedly connected to the first pulley 55. The upper part of the rotating shaft of the first pulley 55 is fixedly connected to the output shaft of the speed reducer 57; the speed reducer 57 is fixedly connected to the fixing plate 56 through a machine base; a second pulley 59 is installed on one side of the first pulley 55, and a belt 58 is installed between the second pulley 59 and the first pulley 55.

[0038] As Figure 1 shown, Specific Embodiment 5: This embodiment is a further limitation of Specific Embodiment 4. The fixing plate 56 is arranged in a "U" shape. The two ends of the fixing plate 56 are respectively screwed on the two side walls of the protective cover 1. Two groups of connecting columns 54 are arranged at the bottom of the fixing plate 56, and the bottoms of the two groups of connecting columns 54 are both connected to the fixing piece 53.

[0039] As Figure 1 , Figure 6 and Figure 7 shown, Specific Embodiment 6: This embodiment is a further limitation of Specific Embodiment 1. The moving paint spraying mechanism 6 includes a driving shaft 61, a bearing seat 62, a fixing frame 63, a support leg 64, a driving frame 65, a reciprocating lead screw 66, a guide rod 67, a gun seat 68, a driving seat 681, and a paint spraying gun 69. A second pulley 59 is fixedly installed at the top of the driving shaft 61. The driving shaft 61 is driven to rotate through the speed reducer 57, the first pulley 55, the belt 58, and the second pulley 59.

[0040] As Figure 1 , Figure 6 and Figure 7As shown in the figure, Specific Embodiment Seven: This embodiment is a further limitation of Specific Embodiment Six. Two sets of bearing seats 62 are respectively installed on the drive shaft 61. The ends of the bearing seats 62 are screwed to the side wall of the protective cover 1. At the same time, the bottom of the drive shaft 61 is fixedly connected to the reciprocating lead screw 66 through a coupling. A guide rod 67 is installed above the reciprocating lead screw 66. The guide rod 67 and the reciprocating lead screw 66 are arranged in parallel. The guide rod 67 and the reciprocating lead screw 66 are both installed inside the drive frame 65.

[0041] Working principle: When in actual use, open the door on the protective cover 1, and hang the motor housing 4 to be spray-painted at the bottom of the connecting rod 51. At this time, start the external switch of the speed reducer 57. The output shaft of the speed reducer 57 drives the first pulley 55 to rotate. The first pulley 55 drives the motor housing 4 to rotate through the hanging ring 52 and the connecting rod 51. At the same time, when the first pulley 55 rotates, it drives the second pulley 59 to rotate through the belt 58. The second pulley 59 drives the reciprocating lead screw 66 to rotate through the drive shaft 61. When the drive shaft 61 rotates, it is limited and guided by two groups of bearing seats 62 to ensure the stability of the drive shaft 61 during rotation and prevent tilting. At the same time, when the reciprocating lead screw 66 rotates, it drives the gun holder 68 to move up and down from top to bottom through the drive seat 681 on it, realizing the up and down reciprocating movement of the spray gun 69; the paint mist ejected from the spray gun 69 can be evenly sprayed on the motor housing 4 that is rotating on its own, completing the uniform spray painting of the motor housing 4; the rotation of the motor housing 4 and the lifting of the spray gun 69 are synchronously achieved through the speed reducer 57, the first pulley 55, the belt 58 and the second pulley 59. The speed reducer 57, the first pulley 55, the belt 58 and the second pulley 59 are combined to form the driving components of this device; coordinating and controlling the lifting movement of the spray gun 69 and the rotation of the motor housing 4 can ensure that the distance between the spray gun 69 and the motor housing 4 always remains relatively stable, and the time and amount of paint mist received by each part of the motor housing 4 during the spray painting process are more uniform, so that the coating thickness on the surface of the motor housing 4 is uniform, effectively avoiding problems such as too thick or too thin paint layers, sagging, and color spots caused by changes in distance or unstable rotation speed, improving the quality and aesthetics of spray painting; enabling the paint mist to be sprayed more accurately on the motor housing 4, reducing the diffusion and splashing of the paint mist in the air, improving the utilization rate of the paint, reducing both material costs and pollution to the working environment; one group of speed reducers 57 controls the movement of two components at the same time, facilitating the automation of the entire spray painting process, eliminating the need for manual separate operation of the lifting of the spray gun 69 and the rotation of the motor housing 4, reducing manual intervention, lowering labor intensity, and improving production efficiency; the driving components can accurately adjust the lifting speed of the spray gun 69 and the rotation speed of the motor housing 4 according to the shape, size and spray painting process requirements of the motor housing 4, enabling the two to reach the best matching state, and minimizing the spray painting time of a single motor housing 4 while ensuring the spray painting quality, improving production efficiency; using one group of driving components to realize the movement of the motor housing 4 and the spray gun 69 reduces the number of components of the equipment compared to using two independent drive systems, simplifies the overall structure of the equipment, and reduces the manufacturing and procurement costs of the equipment; the simplification of the equipment structure means that there are fewer components that need to be maintained and serviced, reducing the complexity and workload of maintenance work;Meanwhile, since the number of driving parts is reduced, the probability of failure is also relatively decreased. Once a problem occurs, it is easier to troubleshoot and repair the failure, which is beneficial to improving the reliability and stability of the equipment and reducing the maintenance cost. The automated coordinated motion control reduces the manual operation links and the risk of operation errors caused by factors such as the skill level and work attitude of the operators, improving the safety and stability of the painting operation. The overall automated control can better enclose the painting process within a specific working area, reducing the chance of personnel contacting harmful substances such as paint mist and organic solvents, which is beneficial to protecting the physical health of the operators and meeting the requirements of work safety and environmental protection. When the paint gun 69 sprays the motor housing 4, the generated paint mist is blocked inside the protective cover 1 and will not overflow into the workshop. At the same time, under the action of the exhaust fan, a negative pressure is formed inside the negative pressure pipe 3. Through the setting of the suction disc 2, the paint mist inside the protective cover 1 is adsorbed. This avoids the situation where operators inhale these paint mists for a long time, which can cause damage to the respiratory system, nervous system, etc. The door body on the protective cover 1 is installed through hinges. A window opposite to the motor housing 4 is also installed on the protective cover 1, and the progress of painting the motor housing 4 can be observed through the window.

[0042] As Figure 6 and Figure 7 shown, Specific Embodiment VIII: This embodiment is a further limitation of Specific Embodiment VII. A fixing frame 63 is screwed and installed at the bottom of the driving frame 65. The fixing frame 63 is rectangularly arranged, and four groups of support legs 64 are evenly installed at the bottom of the fixing frame 63. The bottoms of the support legs 64 are screwed on the side wall of the protective cover 1.

[0043] As Figure 6 and Figure 7 shown, Specific Embodiment IX: This embodiment is a further limitation of Specific Embodiment VII. A driving seat 681 is installed on the reciprocating lead screw 66 inside the driving frame 65. A guiding hole adapted to the size of the guiding rod 67 is formed on the driving seat 681, and the guiding rod 67 is inserted into the guiding hole. The driving seat 681 is movably connected inside the driving frame 65.

[0044] As Figure 1 , Figure 6 and Figure 7 shown, Specific Embodiment X: This embodiment is a further limitation of Specific Embodiment IX. A gun seat 68 is fixedly installed on the surface of the driving seat 681. An installation hole is formed inside the gun seat 68. At the same time, a paint gun 69 is inserted and fixed inside the installation hole. The end of the paint gun 69 is opposite to the motor housing 4. The paint gun 69 moves up and down under the drive of the gun seat 68, the driving seat 681, and the reciprocating lead screw 66. The paint mist ejected from the paint gun 69 sprays the outer surface of the motor housing 4 from top to bottom.

[0045] The present invention covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. Additionally, to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0046] The above description is only a preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A surface painting device for motor processing, comprising a protective cover (1), characterized in that: An air suction disc (2) is fixedly mounted on the inner wall of the protective cover (1), a negative pressure pipe (3) is fixedly mounted on the air suction disc (2), a rotating paint receiving mechanism (5) is mounted inside the protective cover (1), a movable paint spraying mechanism (6) is arranged on one side of the rotating paint receiving mechanism (5), a fixing plate (56) is arranged on the rotating paint receiving mechanism (5), a connecting column (54) is fixedly mounted on the bottom of the fixing plate (56), a fixing plate (53) is fixedly connected to the bottom of the connecting column (54), a hanging ring (52) is arranged on the bottom of the fixing plate (53), a connecting rod (51) is hung on the hanging ring (52), and a motor housing (4) is hung on the bottom of the connecting rod (51); The mobile paint spraying mechanism (6) comprises a drive shaft (61), a bearing seat (62), a fixed frame (63), a support leg (64), a drive frame (65), a reciprocating screw (66), a guide rod (67), a gun seat (68), a drive seat (681) and a paint spraying gun (69). A second pulley (59) is fixedly mounted on the top of the drive shaft (61). The drive shaft (61) is driven to rotate through a reducer (57), a first pulley (55), a belt (58) and a second pulley (59). The drive shaft ( Two sets of bearing seats (62) are respectively installed on the drive frame (61), and the ends of the bearing seats (62) are screwed on the side wall of the protective cover (1). At the same time, the bottom of the drive shaft (61) is fixedly connected to the reciprocating screw (66) through a coupling. A guide rod (67) is installed above the reciprocating screw (66). The guide rod (67) and the reciprocating screw (66) are arranged in parallel. The guide rod (67) and the reciprocating screw (66) are both installed inside the drive frame (65); the bottom of the drive frame (65) is screwed with a fixed The fixing frame (63) is rectangular, and four sets of supporting legs (64) are evenly installed at the bottom of the fixing frame (63), and the bottom of the supporting legs (64) is screwed to the side wall of the protective cover (1); a driving seat (681) is installed on the reciprocating screw (66) inside the driving frame (65), and a guide hole with a size matching the guide rod (67) is opened on the driving seat (681), and the guide rod (67) is inserted into the inside of the guide hole. The driving seat (681) is movably connected to the driving frame (65). The surface of the driving seat (681) is fixedly mounted with a gun seat (68), the interior of the gun seat (68) is provided with a mounting hole, and a paint spray gun (69) is inserted and fixed inside the mounting hole, and the end of the paint spray gun (69) is arranged opposite to the motor housing (4). The paint spray gun (69) is driven by the gun seat (68), the driving seat (681) and the reciprocating screw (66) to perform a lifting operation, and the paint mist ejected from the paint spray gun (69) is sprayed from top to bottom on the outer surface of the motor housing (4).

2. The surface painting device for motor processing according to claim 1 is characterized in that: The air suction plate (2) is a rectangular structure made of plastic material. The end of the negative pressure pipe (3) on the air suction plate (2) is connected to the exhaust fan. The air suction plate (2) is installed on the inner wall of the protective cover (1) through a bracket.

3. The surface painting device for motor processing according to claim 1, characterized in that: The rotary paint receiving mechanism (5) comprises a connecting rod (51), a hanging ring (52), a fixing plate (53), a connecting column (54), a first pulley (55), a fixing plate (56), a reducer (57), a belt (58) and a second pulley (59). C-shaped hooks are fixedly provided at both ends of the connecting rod (51). The connecting rod (51) is connected to the hanging ring (52) at the top of the motor housing (4) and the hanging ring (52) at the bottom of the fixing plate (53) through the C-shaped hooks at both ends. The top of the motor housing (4) is connected to the hanging ring (52) at the bottom of the first pulley (55) through the connecting rod (51). The motor housing (4) is driven to rotate through the reducer (57), the connecting rod (51) and the hanging ring (52).

4. The surface painting device for motor processing according to claim 3 is characterized in that: A shaft is welded to the top of a hanging ring (52) arranged at the bottom of the fixing plate (53); the shaft at the top of the hanging ring (52) is fixedly connected to the first pulley (55); the upper part of the rotating shaft of the first pulley (55) is fixed to the output shaft of the reducer (57); the reducer (57) is fixedly connected to the fixing plate (56) through a machine base; a second pulley (59) is installed on one side of the first pulley (55); a belt (58) is installed between the second pulley (59) and the first pulley (55).

5. The surface painting device for motor processing according to claim 4 is characterized in that: The fixing plate (56) is arranged in a "U" shape, and the two ends of the fixing plate (56) are respectively screwed onto the two side walls of the protective cover (1). Two groups of connecting columns (54) are arranged at the bottom of the fixing plate (56), and the bottoms of the two groups of connecting columns (54) are connected to the fixing plate (53).

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