Automobile plastic part paint spraying bracket

Abstract

The utility model discloses a paint spraying bracket for an automobile plastic part. The paint spraying bracket comprises a waste liquid collecting box, a fixing plate, a paint spraying box and a cover plate, two fixing plates are vertically and fixedly arranged in the waste liquid collecting box at intervals, and a paint spraying box with the upper end and the lower end being open is horizontally and rotatably arranged between the two fixing plates through a rotating shaft. And two cover plates capable of blocking openings in the upper end and the lower end of the paint spraying box and used for supporting the plastic parts are horizontally and movably arranged in the paint spraying box in a spaced mode. The automobile plastic part paint spraying bracket overcomes the defects that in the prior art, the plastic parts are placed in the paint spraying box, and only the upper surfaces of the plastic parts can be painted; and when paint is sprayed on the other side, the paint needs to be manually overturned to enable the other side to face upwards for paint spraying operation, so that the paint spraying process is tedious, and the working efficiency is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile plastic processing, in particular to a paint spraying bracket for automobile plastic parts. Background Art

[0002] Automotive plastic parts are a type of auto accessory, comprising the individual components of a vehicle and serving the vehicle's needs. Currently, some auto parts are made of plastic, and injection molding is typically used for processing. However, to enhance the aesthetics and wear resistance of these parts, they are often painted after injection molding.

[0003] After searching: the Chinese patent application number is "CN202322431786.X", which discloses a kind of automobile plastic parts spray painting bracket, including a base, a telescopic rod fixedly connected to the top of the base, a paint box provided on the top of the telescopic rod, and an adjustment component provided inside the paint box. The adjustment component includes two side screws, and the two side screws are symmetrically installed on the paint box. The end of one side of the screw is rotatably connected to a cross plate, and the surface of the cross plate is symmetrically fixedly connected to a spring, and the end of the spring is fixedly connected to a clamping plate; this application designs an adjustment component, which is convenient for clamping and painting automobile plastic parts of different sizes when spraying automobile plastic parts, and can adjust the position of automobile plastic parts during spraying, thereby facilitating workers to perform painting operations.

[0004] The inventor discovered the following problems in the prior art during the implementation of the present invention:

[0005] During the painting process of plastic parts, the plastic parts are placed in the paint box and only the upper surface of the plastic parts can be painted. When painting the other side, it is necessary to manually flip it over so that the other side faces up to perform the painting operation, which makes the painting process more cumbersome and reduces work efficiency.

[0006] Therefore, providing an automobile plastic parts painting bracket that can achieve double-sided painting during use without manual flipping, reducing the workload of staff and improving work efficiency is an urgent problem to be solved by the present utility model. Utility Model Content

[0007] In response to the above technical problems, the purpose of the present utility model is to overcome the problem in the prior art that when plastic parts are placed in a paint spray box, only the upper surface of the plastic parts can be painted. When spraying paint on the other side, it is necessary to manually flip it over so that the other side is facing up to carry out the painting operation, which makes the painting process more cumbersome and reduces work efficiency. Thus, a paint spraying bracket for automobile plastic parts is provided which can achieve double-sided painting during use without manual flipping, reduces the workload of the staff, and improves work efficiency.

[0008] In order to achieve the above-mentioned purpose, the utility model provides a paint spraying bracket for automobile plastic parts, which comprises: a waste liquid collection box, a fixing plate, a paint spraying box and a cover plate;

[0009] Two fixed plates are vertically and fixedly arranged inside the waste liquid collection box, and a paint spray box with open upper and lower ends is horizontally and rotatably arranged between the two fixed plates through a rotating shaft. Two cover plates that can seal the upper and lower openings and support plastic parts are arranged inside the paint spray box at intervals, horizontally and movably, and two clamping plates for clamping plastic parts are arranged inside the paint spray box between the two cover plates.

[0010] Preferably, each of the cover plates comprises: a first support plate and a second support plate; wherein,

[0011] The interior of the paint spray box is horizontally and movably provided with a No. 1 pallet and a No. 2 pallet that can be pressed together to block the opening of the paint spray box or moved away from each other to open the opening, and through holes for the No. 1 pallet and the No. 2 pallet to pass through are respectively opened horizontally on both sides of the paint spray box.

[0012] Preferably, the spray paint bracket further comprises a moving mechanism for driving the first and second pallets to move in the horizontal direction, the moving mechanism comprising: a moving gear, a moving rack and a moving motor; wherein,

[0013] A row of movable racks are fixedly arranged evenly along the length direction of the upper ends of the No. 1 pallet and the No. 2 pallet facing away from the rotating shaft, and movable gears meshing with the row of movable racks are horizontally and rotatably arranged on both side walls of the paint spray box located on the upper ends of the No. 1 pallet and the No. 2 pallet. A movable motor for driving the movable gear to rotate is also fixedly arranged horizontally on the paint spray box, and the movable motor is coaxially connected to the central rotating shaft of the movable gear through a coupling.

[0014] Preferably, the paint spraying bracket further comprises a power assembly for driving the two clamping plates to move inside the paint spraying box, wherein the power assembly comprises: a cylinder; wherein,

[0015] A fixed disk is coaxially fixed on each of the two rotating shafts, and at least one cylinder is horizontally fixed on each of the fixed disks. The free end of the piston rod of each cylinder horizontally penetrates into the interior of the paint spray box from the side wall and is fixed on the clamping plate.

[0016] Preferably, the upper and lower ends of the two clamping plates respectively rest against the two cover plates, and sponge layers are fixedly provided on the facing surfaces of the two clamping plates.

[0017] Preferably, two fixing plates facing the two No. 1 support plates and the No. 2 support plates are respectively provided with avoidance holes horizontally penetrating therethrough for the No. 1 support plate and the No. 2 support plate of the cover plate to pass through.

[0018] Preferably, a drainage pipe communicating with the interior of the waste liquid collection box is fixedly arranged horizontally on the side wall of the waste liquid collection box, and a sealing cover capable of covering the port is fixedly arranged on the port of the drainage pipe through threaded connection.

[0019] Preferably, two rotating shafts are horizontally fixed on both sides of the paint spray box, and the two rotating shafts are horizontally and rotatably arranged on the fixed plate through bearings, and the end of any one of the rotating shafts is coaxially connected to the drive motor horizontally fixed on the fixed plate through a coupling.

[0020] According to the above technical solution, the automobile plastic parts spray painting bracket provided by the utility model has the following beneficial effects when used:

[0021] (1) When in use, the cover plate at the upper end of the spray paint box is moved to open the upper end of the spray paint box, and the lower end of the spray paint box is sealed by another cover plate. The plastic part to be painted is placed into the spray paint box from the upper end of the open spray paint box, and supported by the cover plate at the lower end of the open spray paint box. Then, the two clamping plates are driven to move toward the plastic part to clamp and fix the plastic part to prevent it from shifting during the painting process and affecting the painting effect.

[0022] (2) After the upper end of the plastic part is painted, the cover plate at the upper end of the paint spray box is moved to block the upper end of the cover plate, so that the two cover plates block the upper and lower openings of the paint spray box, and the paint spray box is driven to rotate by the rotating shaft to swap the upper and lower openings of the paint spray box, so that the unpainted lower surface and the painted upper surface of the plastic part in the paint spray box are swapped, and then the cover plate at the lower end of the paint spray box is driven to open the lower end of the opening, so that the unpainted lower surface of the plastic part in the paint spray box is exposed, so that the lower surface of the plastic part can be painted.

[0023] Therefore, the automobile plastic parts painting bracket provided by the utility model can realize double-sided painting during use without manual flipping, thereby reducing the workload of the staff and improving work efficiency.

[0024] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation methods; and the parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a structural diagram of a paint spraying bracket for automobile plastic parts provided in a preferred embodiment of the present utility model;

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure of the middle part A;

[0028] Figure 3 This is a structural front view of a spray paint bracket for automobile plastic parts provided in a preferred embodiment of the utility model.

[0029] Figure 4 This is a schematic diagram of the internal structure of a paint spraying bracket for automobile plastic parts provided in a preferred embodiment of the present utility model;

[0030] Figure 5 It is a structural schematic diagram of a paint box of a paint spraying bracket for automobile plastic parts provided in a preferred embodiment of the present utility model.

[0031] Description of Reference Numerals

[0032] 1. Waste liquid collection box; 2. Fixed plate; 3. Paint spray box; 401. Pallet No. 1; 402. Pallet No. 2; 5. Clamping plate; 6. Rotating shaft; 7. Moving mechanism; 701. Moving gear; 702. Moving rack; 703. Moving motor; 8. Fixed plate; 9. Cylinder; 10. Avoidance hole; 11. Sponge layer; 12. Drive motor; 13. Drain pipe. DETAILED DESCRIPTION

[0033] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0034] like Figure 1-5 As shown, the utility model provides a paint spraying bracket for automobile plastic parts, which includes: a waste liquid collection box 1, a fixing plate 2, a paint spraying box 3 and a cover plate;

[0035] Two fixed plates 2 are vertically and fixedly arranged inside the waste liquid collection box 1, and a paint spray box 3 with open upper and lower ends is horizontally and rotatably arranged between the two fixed plates 2 through a rotating shaft 6. Two cover plates that can seal the upper and lower openings and support plastic parts are arranged inside the paint spray box 3 at intervals, horizontally and movably, and two clamping plates 5 for clamping plastic parts are arranged inside the paint spray box 3 located between the two cover plates at intervals and movably.

[0036] In the above scheme, when in use, the cover plate at the upper end of the paint spray box 3 is moved to make the opening at the upper end of the paint spray box 3 open, and the opening at the lower end of the paint spray box 3 is blocked by another cover plate, and the plastic part to be painted is placed into the paint spray box 3 from the upper end opening of the opened paint spray box 3, and supported by the cover plate at the lower end opening, and then the two clamping plates 5 are driven to move toward the plastic part to clamp and fix the plastic part to prevent it from deflecting during the painting process and affecting the painting effect.

[0037] After the upper end of the plastic part is painted, the cover plate at the upper end of the paint spray box 3 is moved to block the upper end of the cover plate, so that the two cover plates block the upper and lower openings of the paint spray box 3, and the rotating shaft 6 drives the paint spray box 3 to rotate so that the upper and lower openings of the paint spray box 3 are swapped, so that the unpainted lower surface and the painted upper surface of the plastic part in the paint spray box 3 are swapped, and then the cover plate at the lower end of the paint spray box 3 is driven to open the lower end of the opening, exposing the unpainted lower surface of the plastic part in the paint spray box 3 so that the lower surface of the plastic part can be painted. Therefore, during the painting process, there is no need for manual flipping, which reduces the workload of the staff and improves work efficiency.

[0038] In a preferred embodiment of the present invention, each of the cover plates comprises: a first support plate 401 and a second support plate 402; wherein,

[0039] The interior of the paint spray box 3 is horizontally and movably provided with a No. 1 pallet 401 and a No. 2 pallet 402 that can be pressed together to block the opening of the paint spray box 3 or moved away from each other to open the opening, and through holes for the No. 1 pallet 401 and the No. 2 pallet 402 to pass through are respectively opened horizontally on both sides of the paint spray box 3.

[0040] In the above scheme, when in use, the No. 1 pallet 401 and the No. 2 pallet 402 located at the upper end of the spray paint box 3 are moved in opposite directions to separate the two and open the opening at the upper end of the spray paint box 3, the plastic part is placed horizontally in the spray paint box 3 and the two clamping plates 5 are moved to clamp and fix the plastic part, and the upper surface of the plastic part is sprayed by the sprayer.

[0041] After the spraying of the upper surface is completed, the No. 1 support plate 401 and the No. 2 support plate 402 located at the upper end of the spray box 3 are moved toward each other to block the opening of the upper end of the spray box 3, and the spray box 3 and the plastic parts placed therein are turned over by rotating the rotating shaft 6 to exchange the two opening positions of the upper and lower ends of the spray box 3, so that the upper end opening of the spray box 3 is located at the bottom, and the sprayed upper surface of the plastic parts inside the spray box 3 is located at the bottom, and the The No. 1 pallet 401 and the No. 2 pallet 402 lift and support the plastic parts. At the same time, the opening of the lower end of the spray box 3 is located at the top, and the lower surface of the plastic parts inside the spray box 3 is located directly above. The No. 1 pallet 401 and the No. 2 pallet 402 are driven toward each other to keep the opening of the lower end of the spray box 3 in an open state, so that the lower surface of the plastic parts inside the spray box 3 to be painted is exposed, so that the lower surface of the plastic parts can be painted.

[0042] After the painting is completed and the plastic parts are taken out, the No. 1 support plate 401 and the No. 2 support plate 402 of the two cover plates can be moved toward the fixed plates 2 on both sides respectively, so that the upper and lower openings of the paint spray box 3 are in an open state, so that the residual paint of the paint spray box 3 during the painting process can drip into the waste liquid collection box 1 for collection.

[0043] In a preferred embodiment of the present invention, the paint spraying bracket further includes a moving mechanism 7 for driving the first pallet 401 and the second pallet 402 to move in the horizontal direction, and the moving mechanism 7 includes: a moving gear 701, a moving rack 702 and a moving motor 703; wherein,

[0044] A row of movable racks 702 are fixedly arranged evenly along the length direction of the upper ends of the No. 1 pallet 401 and the No. 2 pallet 402 facing away from the rotating shaft 6, and a movable gear 701 meshing with the row of movable racks 702 is horizontally and rotatably arranged on the two side walls of the paint box 3 located on the upper ends of the No. 1 pallet 401 and the No. 2 pallet 402. A movable motor 703 for driving the movable gear 701 to rotate is also fixedly arranged horizontally on the paint box 3, and the movable motor 703 is coaxially connected to the central rotating shaft of the movable gear 701 through a coupling.

[0045] In the above scheme, when in use, the moving rod motor 703 is started to drive the moving gear 701 to rotate clockwise or counterclockwise, and during the rotation of the moving gear 701, the row of moving racks 702 engaged therewith are used to drive the No. 1 pallet 401 and the No. 2 pallet 402 to move in the horizontal direction, so that the No. 1 pallet 401 and the No. 2 pallet 402 are close to each other to block the opening of the spray paint box 3 or the two are moved away from each other to keep the opening of the spray paint box 3 in an open state.

[0046] During the painting process, the No. 1 pallet 401 and the No. 2 pallet 402 located at the upper end of the paint spray box 3 are moved in opposite directions to separate the two and open the opening at the upper end of the paint spray box 3. The plastic part is placed horizontally in the paint spray box 3 and the two clamping plates 5 are moved to clamp and fix the plastic part, and the upper surface of the plastic part is sprayed by the sprayer.

[0047] After the spraying of the upper surface is completed, the No. 1 support plate 401 and the No. 2 support plate 402 located at the upper end of the spray box 3 are moved toward each other to block the opening of the upper end of the spray box 3, and the spray box 3 and the plastic parts placed therein are turned over by rotating the rotating shaft 6 to exchange the two opening positions of the upper and lower ends of the spray box 3, so that the upper end opening of the spray box 3 is located at the bottom, and the sprayed upper surface of the plastic parts inside the spray box 3 is located at the bottom, and the The No. 1 pallet 401 and the No. 2 pallet 402 lift and support the plastic parts. At the same time, the opening of the lower end of the spray box 3 is located at the top, and the lower surface of the plastic parts inside the spray box 3 is located directly above. The No. 1 pallet 401 and the No. 2 pallet 402 are driven toward each other to keep the opening of the lower end of the spray box 3 in an open state, so that the lower surface of the plastic parts inside the spray box 3 to be painted is exposed, so that the lower surface of the plastic parts can be painted.

[0048] After the painting is completed and the plastic parts are taken out, the No. 1 support plate 401 and the No. 2 support plate 402 of the two cover plates can be moved toward the fixed plates 2 on both sides respectively, so that the upper and lower openings of the paint spray box 3 are in an open state, so that the residual paint of the paint spray box 3 during the painting process can drip into the waste liquid collection box 1 for collection.

[0049] In a preferred embodiment of the present invention, the paint spraying bracket further comprises a power assembly for driving the two clamping plates 5 to move inside the paint spraying box 3, wherein the power assembly comprises: a cylinder 9; wherein,

[0050] A fixed plate 8 is coaxially fixed on each of the two rotating shafts 6, and at least one cylinder 9 is horizontally fixed on each of the fixed plates 8. The free end of the piston rod of each of the cylinders 9 passes horizontally through the side wall of the paint spray box 3 and is fixed on the clamping plate 5.

[0051] In the above solution, when in use, the clamping plate 5 fixed thereon can be driven to move horizontally and linearly in the paint spray box 3 by driving the piston rod of the air cylinder 9 to extend from or retract into the cylinder portion.

[0052] And described cylinder 9 is existing known technology, therefore, its specific structure and operating principle will not be described in detail here. In addition, the selection and assembly method of described cylinder 9 specifications can be carried out according to actual conditions, not subject to the size and size of the picture.

[0053] In a preferred embodiment of the present invention, the upper and lower ends of the two clamping plates 5 respectively abut against the two cover plates, and sponge layers 11 are fixedly provided on the facing surfaces of the two clamping plates 5 .

[0054] In the above scheme, during the painting process, the paint enters the paint box 3, and the sponge layer 11 absorbs part of the paint in the paint box 3. Since the two ends of the plastic part clamped between the two clamping plates 5 will contact the sponge layer 11, the paint stored in the sponge layer 11 can be used to paint both sides of the plastic part.

[0055] In addition, a sponge layer 11 is also horizontally fixedly provided on each of the No. 1 pallet 401 and the No. 2 pallet 402 facing the clamping plate 5 to prevent the coating sprayed on the plastic parts from being scratched when the No. 1 pallet 401 and the No. 2 pallet 402 are moving.

[0056] In a preferred embodiment of the present invention, the two fixing plates 2 facing the two No. 1 support plates 401 and the No. 2 support plates 402 are respectively provided with avoidance holes 10 horizontally penetrated therethrough for the No. 1 support plate 401 and the No. 2 support plate 402 of the cover plate to pass through.

[0057] In the above scheme, when the No. 1 pallet 401 and the No. 2 pallet 402 are moving toward their respective corresponding fixed plates 2, the No. 1 pallet 401 and the No. 2 pallet 402 can pass through the fixed plate 2 through their respective corresponding avoidance holes 10 to avoid the No. 1 pallet 401 and the No. 2 pallet 402 being blocked by the fixed plate 2 during the movement.

[0058] In a preferred embodiment of the present invention, a drainage pipe 13 communicating with the interior of the waste liquid collection box 1 is fixedly installed horizontally on the side wall of the waste liquid collection box 1, and a sealing cover capable of covering the port is fixedly installed on the port of the drainage pipe 13 through threaded connection.

[0059] In the above solution, the paint collected in the waste liquid collection box 1 can be discharged through the drain pipe 13. During the painting process, the sealing cover needs to be screwed onto the drain pipe 13 to seal it.

[0060] In a preferred embodiment of the present invention, two rotating shafts 6 are horizontally fixed on both sides of the paint spray box 3, and the two rotating shafts 6 are horizontally and rotatably arranged on the fixed plate 2 through bearings, and the end of any one of the rotating shafts 6 is coaxially connected to the drive motor 12 horizontally fixed on the fixed plate 2 through a coupling.

[0061] In the above solution, the driving motor 12 is started to drive the rotating shaft 6 to rotate so as to drive the paint spray box 3 to rotate in the horizontal direction, so that the upper and lower surfaces of the plastic parts of the paint spray box 3 to be painted face upward.

[0062] Among them, automotive plastic parts include: spoilers, dashboards and other plastic parts.

[0063] In summary, the automobile plastic parts paint spraying bracket provided by the utility model overcomes the problem in the prior art that the plastic parts are placed in the paint spray box, and only the upper surface of the plastic parts can be painted. When painting the other side, it is necessary to manually flip it over so that the other side is facing up for the painting operation, which makes the painting process more cumbersome and reduces work efficiency.

[0064] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0065] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0066] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A bracket for spray painting automobile plastic parts, characterized in that: The paint spraying bracket comprises: a waste liquid collection box (1), a fixing plate (2), a paint spraying box (3) and a cover plate; Two fixed plates (2) are vertically and fixedly arranged at intervals inside the waste liquid collection box (1), and a spray paint box (3) with upper and lower ends opened is horizontally and rotatably arranged between the two fixed plates (2) via a rotating shaft (6). Two cover plates capable of sealing the upper and lower ends of the openings and supporting plastic parts are arranged at intervals, horizontally and movably inside the spray paint box (3), and two clamping plates (5) for clamping plastic parts are arranged at intervals and movably inside the spray paint box (3) located between the two cover plates.

2. The automobile plastic parts spray painting bracket according to claim 1, characterized in that: Each of the cover plates comprises: a first support plate (401) and a second support plate (402); wherein, The interior of the spray paint box (3) is horizontally and movably provided with a first support plate (401) and a second support plate (402) that can be pressed together to block the opening of the spray paint box (3) or moved away from each other to open the opening of the spray paint box (3), and through holes for the first support plate (401) and the second support plate (402) to pass through are respectively opened horizontally on both sides of the spray paint box (3).

3. The automobile plastic parts spray painting bracket according to claim 2, characterized in that: The spray paint bracket further comprises a moving mechanism (7) for driving the first support plate (401) and the second support plate (402) to move in a horizontal direction, wherein the moving mechanism (7) comprises: a moving gear (701), a moving rack (702) and a moving motor (703); wherein, A row of moving racks (702) are fixedly arranged evenly along the length direction of the upper ends of the No. 1 support plate (401) and the No. 2 support plate (402) facing away from the rotating shaft (6), and a moving gear (701) meshing with the row of moving racks (702) is horizontally and rotatably arranged on the two side walls of the spray paint box (3) located on the upper ends of the No. 1 support plate (401) and the No. 2 support plate (402). A moving motor (703) for driving the moving gear (701) to rotate is also fixedly arranged horizontally on the spray paint box (3), and the moving motor (703) is coaxially connected to the central rotating shaft of the moving gear (701) through a coupling.

4. The automobile plastic parts spray painting bracket according to claim 1, characterized in that: The paint spraying bracket further comprises a power assembly for driving the two clamping plates (5) to move inside the paint spraying box (3), wherein the power assembly comprises: a cylinder (9); wherein, A fixed disk (8) is coaxially fixed on each of the two rotating shafts (6), and at least one cylinder (9) is horizontally fixed on each of the fixed disks (8). The free end of the piston rod of each of the cylinders (9) horizontally penetrates the interior of the paint spray box (3) from the side wall thereof and is fixed on the clamping plate (5).

5. The automobile plastic parts spray painting bracket according to claim 4, characterized in that: The upper and lower ends of the two clamping plates (5) respectively rest against the two cover plates, and sponge layers (11) are fixedly provided on the facing surfaces of the two clamping plates (5).

6. The automobile plastic parts spray painting bracket according to claim 2, characterized in that: The two fixing plates (2) facing the two first supporting plates (401) and the second supporting plate (402) are respectively provided with avoidance holes (10) horizontally penetrating therethrough for the first supporting plate (401) and the second supporting plate (402) of the cover plate to pass through.

7. The automobile plastic parts spray painting bracket according to claim 1, characterized in that: A drainage pipe (13) communicating with the interior of the waste liquid collection box (1) is fixedly arranged horizontally on the side wall of the waste liquid collection box (1), and a sealing cover capable of covering the port is fixedly arranged on the port of the drainage pipe (13) through threaded connection.

8. The automobile plastic parts spray painting bracket according to claim 1, characterized in that: Two rotating shafts (6) are horizontally fixedly provided on both sides of the paint spray box (3), and the two rotating shafts (6) are horizontally and rotatably provided on the fixed plate (2) through bearings, and the end of any one of the rotating shafts (6) is coaxially connected to a driving motor (12) horizontally fixed on the fixed plate (2) through a coupling.

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