Rotary spraying equipment

Abstract

Rotary spraying equipment comprises a control box, a rotary spraying box and a rack, the rotary spraying box comprises a box bottom frame and an outer box body, the box bottom frame stretches across the middle of the rack, the outer box body is arranged on the box bottom frame, passing openings are formed in the front side and the rear side of the outer box body, and a rotary spraying mechanism is further installed on the box bottom frame; in conclusion, the universal supporting tool is arranged to support different profiles in a suspended mode, the paint spraying gun starts to rotate while the profiles transversely and horizontally reciprocate through the middle channel, the spraying gun is aligned with the center of the middle circle to enable the profiles to be sprayed in a 360-degree rotating mode, the paint utilization rate is increased, the spraying quality is improved, and a customized clamp is not needed; according to the utility model, the production efficiency is improved, the automation degree is high, and the equipment cost and the labor cost are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of paint spraying technology, specifically relating to a rotary spraying device. Background Technology

[0002] Currently, most spraying equipment for irregularly shaped profiles consists of a long production line. Spraying is achieved by fixing the spray guns while the product is moved laterally. Multiple machines with multiple spray gun nozzles (8 or more) are required to adjust for different profiles, which reduces spraying efficiency, quality, and paint utilization. It does not achieve a high degree of automation for spraying such irregularly shaped profiles. At the same time, the product fixtures also need to be customized, which increases costs. Utility Model Content

[0003] The present invention aims to provide a rotary spraying device to solve the technical problems of low paint utilization, low spraying efficiency and low quality in the spraying of irregular profiles in existing paint spraying equipment.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A rotary spraying device includes a control box, a rotary spraying box, and a frame. The rotary spraying box includes a base frame and an outer box. The base frame spans the middle of the frame, and the outer box is mounted on the base frame. Passage openings are provided on both the front and rear sides of the outer box. A rotary spraying mechanism is also installed on the base frame and is located inside the outer box.

[0006] The rotary spraying mechanism includes a support frame, a cylindrical body, and a rear cover plate. Both the support frame and the rear cover plate are mounted on a base frame. The rear cover plate has a through hole located at one of the openings. A mounting cylinder is fixed to the support frame. One end of the cylindrical body is fitted onto the mounting cylinder. An inner core cylinder is rotatably mounted inside the mounting cylinder via bearings. A driven pulley is located at one end of the inner core cylinder, and the other end of the inner core cylinder extends into the cylindrical body. A disc is fixed to the end of the inner core cylinder, and several support arms are fixed to the disc. All support arms are evenly arranged along the axis of the disc, and each support arm is parallel to the axis of the cylindrical body. A paint spray gun is mounted on each support arm. A spraying motor is also mounted on the base frame. A drive pulley is mounted on the main shaft of the spraying motor, and a transmission belt is provided between the drive pulley and the driven pulley. The rear cover plate is located at the other end of the cylindrical body, and the axis of the through hole coincides with the axis of the cylindrical body. There is a gap between the rear cover plate and the end of the cylindrical body.

[0007] The frame is equipped with a reciprocating drive mechanism and two guide rails. Two slides are mounted on the two guide rails and are connected by a connecting rod. The reciprocating drive mechanism is used to drive the two slides to slide synchronously on the guide rails. Each slide is equipped with a support and a channel steel is fixed on the support. The channel steels of the two supports are located on a straight line.

[0008] The control box contains a controller, which is connected to the spraying motor, the reciprocating drive mechanism, and all paint spray guns.

[0009] Furthermore, a turntable bearing is provided between the end of the cylindrical body and the mounting cylinder. The outer ring of the turntable bearing is fixed to the end of the cylindrical body by several screws, and the inner ring of the turntable bearing is fixed to the mounting cylinder. The outer ring of the turntable bearing has a gear ring structure. A cylinder self-cleaning motor is installed on the bottom frame of the housing. A drive gear is installed on the main shaft of the cylinder self-cleaning motor. The drive gear meshes with the gear ring structure of the turntable bearing.

[0010] A spray pipe is installed on the rear cover plate. The spray pipe is arranged along the axial direction of the cylinder and is located in the lower middle part of the cylinder. A row of spray holes is started at the bottom of the spray pipe and faces the inner wall of the cylinder.

[0011] Furthermore, a scraper and an air knife are installed on the rear cover plate. The scraper and air knife are located on opposite sides of the spray pipe, with the air knife above the scraper. The blade of the scraper is close to the inner wall of the cylinder, and the air knife faces the inner wall of the cylinder.

[0012] Furthermore, a sludge collection tray is placed on the bottom frame of the box, located directly below the gap between the rear cover plate and the end of the cylindrical body.

[0013] Furthermore, the reciprocating drive mechanism includes a forward and reverse motor and a second pulley. The forward and reverse motor is mounted on the frame, and a first pulley is mounted on the main shaft of the forward and reverse motor. The second pulley is mounted on the frame by rotation. A toothed belt is provided between the first pulley and the second pulley, and one of the slides is fixed on the toothed belt. The controller is connected to the forward and reverse motor.

[0014] Furthermore, the rotary spraying equipment also includes an automatic feeding device and an automatic unloading device, which are located on both sides of the rotary spraying box and have the same structure.

[0015] The automatic feeding device includes a profile lifting mechanism and a material rack. A stepper motor and two sets of profile conveying mechanisms are installed on the material rack. The two sets of profile conveying mechanisms are arranged side by side. Each set of profile conveying mechanisms includes a first sprocket and a second sprocket. The first sprocket and the second sprocket are rotatably installed at both ends of the material rack. A conveying chain is arranged between the first sprocket and the second sprocket. Several first clamping plates are arranged on the conveying chain. All the first clamping plates are arranged side by side at equal intervals. The first sprockets of the two sets of profile conveying mechanisms are connected by a transmission rod. A driven sprocket is arranged on the transmission rod. A driving sprocket is installed on the stepper motor. A chain is arranged between the driving sprocket and the driven sprocket.

[0016] The profile lifting mechanism is located at one end of the material rack body. The profile lifting mechanism includes a rotating shaft, a drive motor, and two sets of brackets. The rotating shaft is mounted on the material rack body by rotation. The drive motor is used to drive the rotating shaft to rotate. The bracket is a parallelogram structure and consists of two short rods and two long rods. The long rods and short rods are connected by a hinge. Two vertical slide rails are fixed on the material rack body. Each vertical slide rail is equipped with a slider. The slider can move vertically on the vertical slide rail. The two sets of brackets are respectively set on the two sliders, and the short rods at the bottom of the brackets are fixed on the sliders.

[0017] Both ends of the rotating shaft are connected to the long rods of the two sets of brackets by rocker arms. One end of the rocker arm is fixed to the rotating shaft, and the other end of the rocker arm is rotatably mounted on the long rod of the bracket by a pin. A second locking plate is fixed on the short rod at the top of both sets of brackets. Both the first and second locking plates have V-shaped slots.

[0018] The controller is connected to both the stepper motor and the drive motor.

[0019] Furthermore, an exhaust vent is provided on the rear cover, and an exhaust pipe is connected to the exhaust vent.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides suspended support for different profiles by setting universal supports. While the profiles move horizontally and reciprocally through the middle channel, the paint spray gun starts to rotate. The spray gun is aligned with the center circle to spray the profile 360 ​​degrees. This improves the utilization rate of paint and the spraying quality. No custom clamps are required, which maximizes the use of universal supports. This utility model improves production efficiency, has a high degree of automation, and reduces equipment and labor costs. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is an isometric view of a rotary spraying device according to the present invention;

[0023] Figure 2 This is an isometric view of a rotary spraying device according to this utility model from another perspective.

[0024] Figure 3 This is a schematic diagram of the rotating spray box structure;

[0025] Figure 4 This is a schematic diagram of the internal structure of the rotary spray booth;

[0026] Figure 5 This is a schematic diagram of the rotary spraying mechanism;

[0027] Figure 6 This is a schematic diagram of the inner core cylinder installation.

[0028] Figure 7 This is a side view of the rear cover.

[0029] Figure 8 This is a schematic diagram of the reciprocating drive mechanism;

[0030] Figure 9 This is a schematic diagram of the automatic feeding device;

[0031] Figure 10 This is a schematic diagram of the profile support mechanism. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] The present invention will be further described in detail below with reference to the embodiments.

[0034] A specific embodiment of the rotary spraying equipment provided by this utility model:

[0035] like Figure 1-6 As shown, a rotary spraying device includes a control box 1, a rotary spraying box 2, and a frame 3. The rotary spraying box 2 includes a box base frame 4 and an outer box 5. The box base frame 4 spans the middle of the frame 3, and the outer box 5 is mounted on the box base frame 4. Passage openings 6 are provided on both the front and rear sides of the outer box 5. A rotary spraying mechanism 7 is also installed on the box base frame 4, and the rotary spraying mechanism 7 is located inside the outer box 5.

[0036] The rotary spraying mechanism 7 includes a support frame 8, a cylindrical body 9, and a rear cover plate 10. Both the support frame 8 and the rear cover plate 10 are mounted on a base frame 4. The rear cover plate 10 has a through hole 11 located at one of the passage openings 6. A mounting cylinder 12 is fixed to the support frame 8. One end of the cylindrical body 9 is fitted onto the mounting cylinder 12. An inner core cylinder 13 is rotatably mounted inside the mounting cylinder 12 via a bearing. One end of the inner core cylinder 13 is equipped with a driven pulley 14, and the other end of the inner core cylinder 13 extends into the cylindrical body 9. A disc 15 is fixed to the end of the inner core cylinder 13. Several support arms 16 are fixed on the body 15. All support arms 16 are evenly arranged along the axis of the disc body 15. Each support arm 16 is parallel to the axis of the cylindrical body 9. A paint spray gun 17 is installed on the support arm 16. A spraying motor 18 is also installed on the support frame 8. A drive pulley 19 is installed on the main shaft of the spraying motor 18. A transmission belt 20 is provided between the drive pulley 19 and the driven pulley 14. The rear cover plate 10 is located at the other end of the cylindrical body 9. The axis of the through hole 11 coincides with the axis of the cylindrical body 9. There is a gap between the rear cover plate 10 and the end of the cylindrical body 9.

[0037] The frame 3 is equipped with a reciprocating drive mechanism and two guide rails 21. Two slides 22 are mounted on the two guide rails 21. The two slides 22 are connected by a connecting rod 23. The reciprocating drive mechanism is used to drive the two slides 22 to slide synchronously on the guide rails 21. Each slide 22 is equipped with a support 24. A channel steel 25 is fixed on the support 24. The channel steels 25 of the two supports 24 are located on a straight line.

[0038] The control box 1 is equipped with a controller, which is connected to the spraying motor 18, the reciprocating drive mechanism and all the paint spray guns 17.

[0039] like Figure 8 As shown, the reciprocating drive mechanism includes a forward and reverse motor 26 and a second pulley. The forward and reverse motor 26 is mounted on the frame 3. A first pulley 28 is mounted on the main shaft of the forward and reverse motor 26. The second pulley is mounted on the frame 3 by rotation. A toothed belt 29 is provided between the first pulley 28 and the second pulley. One of the slides 22 is fixed on the toothed belt 29. The controller is connected to the forward and reverse motor 26.

[0040] The specific working process of the rotary spraying equipment in this embodiment is as follows: First, the two ends of the profile 100 are placed on the channel steel 25 of the two supports 24. Then, the spraying motor 18, the reciprocating drive mechanism, and the paint spray gun 17 are controlled by the controller. The forward and reverse motor 26 is started. The forward and reverse motor 26 drives the toothed belt 29 through the first pulley 28 and the second pulley. One slide 22 is set on the toothed belt 29, and the other slide 22 is connected to the slide 22 through the connecting rod 23. As the toothed belt 29 is driven, the two slides 22 slide on the guide rail 21 and move from one end of the guide rail 21 to the other end. The profile 100 moves slowly. During the movement, the profile 100 passes through the openings 6 on the front and rear sides of the outer housing 5. As the profile 100 passes through the outer housing 5, the spraying motor 18 and the paint spray gun 17 are started. The spraying motor 18 drives the inner core cylinder 13 to rotate through the driving pulley 19, the driven pulley 14 and the transmission belt 20. Finally, all the support arms 16 rotate around the axis of the inner core cylinder 13. During the rotation, all the paint spray guns 17 spray the profile 100 in the middle. After the profile 100 passes through the outer housing 5, the paint spray guns 17 complete the full spraying operation of the profile 100. Then the profile 100 can be removed.

[0041] As another embodiment of this utility model, since the painting operation of the profile 100 is carried out inside the cylindrical body 9, paint will splash onto the inner wall of the cylindrical body 9 during the painting process. In order to clean the inner wall of the cylindrical body 9, the rotary spraying equipment can be further optimized. Specifically, a turntable bearing 30 is provided between the end of the cylindrical body 9 and the mounting cylinder 12. The outer ring of the turntable bearing 30 is fixed to the end of the cylindrical body 9 by several screws, and the inner ring of the turntable bearing 30 is fixed to the mounting cylinder 12. The outer ring of the turntable bearing 30 is a gear ring structure. A cylinder self-cleaning motor 31 is installed on the bottom frame 4. A drive gear 32 is installed on the main shaft of the cylinder self-cleaning motor 31. The drive gear 32 meshes with the gear ring structure of the turntable bearing 30.

[0042] like Figure 7 As shown, a spray pipe 33 is installed on the rear cover plate 10. The spray pipe 33 is arranged along the axial direction of the cylindrical body 9. The spray pipe 33 is located in the middle and lower part of the cylindrical body 9. A row of spray holes is started at the bottom of the spray pipe 33, and the spray holes face the inner wall of the cylindrical body 9.

[0043] As the painting operation proceeds, the self-cleaning motor 31 starts, driving the cylindrical body 9 to rotate via the drive gear 32 and the turntable bearing 30. The spray pipe 33 is connected to a water source, and clean water is sprayed onto the inner wall of the cylindrical body 9 through the spray holes. The paint mist mixes with the water, which is beneficial for subsequent waste disposal. The mixed liquid flows outward through the gap between the rear cover plate 10 and the cylindrical body 9. As the cylindrical body 9 rotates one revolution, the spray pipe 33 can clean the entire inner wall of the cylindrical body 9. In addition, in order to prevent the outflowing wastewater from polluting the painting workshop, a waste collection tray can be placed on the bottom frame 4. The waste collection tray is located directly below the gap between the rear cover plate 10 and the end of the cylindrical body 9, and the waste collection tray collects the wastewater.

[0044] Preferably, a scraper 34 and an air knife 35 can also be installed on the rear cover plate 10. The scraper 34 and the air knife 35 are located on opposite sides of the spray pipe 33, with the air knife 35 positioned above the scraper 34. The blade of the scraper 34 is close to the inner wall of the cylindrical body 9, and the air knife 35 faces the inner wall of the cylindrical body 9. The scraper 34 is used to scrape off residual paint from the inner wall of the cylindrical body 9, further cleaning the inner wall of the cylindrical body 9. The air knife 35 is used to dry the mixture of paint mist and water inside the cylindrical body 9, preventing the mixture from rotating with the cylindrical body 9 to the top of the profile 100 and then dripping onto the profile 100, causing pollution. An exhaust port 36 is provided on the rear cover plate 10, and an exhaust pipe is connected to the exhaust port 36. During the painting process, the exhaust pipe performs negative pressure suction, creating a small negative pressure inside the cylindrical body 9, drawing out the floating paint mist inside, and preventing the paint mist from overflowing from inside the cylindrical body 9 and polluting the environment.

[0045] In the above embodiments, the profile 100 needs to be manually placed on the support 24 of the two slides 22, and the profile 100 needs to be manually removed from the support 24 after painting. Therefore, the rotary spraying equipment can be further optimized. As another embodiment of this utility model, such as... Figure 9 and Figure 10 As shown, an automatic feeding device 37 and an automatic unloading device 38 are provided on both sides of the rotary spraying box 2. The automatic feeding device 37 and the automatic unloading device 38 are used for feeding and unloading operations, respectively. The automatic feeding device 37 and the automatic unloading device 38 have the same structure.

[0046] The automatic feeding device 37 includes a profile lifting mechanism and a material rack 39. A stepper motor 40 and two sets of profile 100 conveying mechanisms 41 are installed on the material rack 39. The two sets of profile 100 conveying mechanisms 41 are arranged side by side. Each set of profile 100 conveying mechanisms 41 includes a first sprocket 42 and a second sprocket 43. The first sprocket 42 and the second sprocket 43 are rotatably installed at both ends of the material rack 39. A conveying chain 44 is arranged between the first sprocket 42 and the second sprocket 43. Several first clamping plates 45 are arranged on the conveying chain 44. All the first clamping plates 45 are arranged side by side at equal intervals. The first sprockets 42 of the two sets of profile 100 conveying mechanisms 41 are connected by a transmission rod 46. A driven sprocket 47 is arranged on the transmission rod 46. A driving sprocket 48 is installed on the stepper motor 40. A chain is arranged between the driving sprocket 48 and the driven sprocket 47.

[0047] The profile lifting mechanism is located at one end of the material rack body 39. The profile lifting mechanism includes a rotating shaft 50, a drive motor 51, and two sets of brackets 52. The rotating shaft 50 is mounted on the material rack body 39 by rotation. The drive motor 51 is used to drive the rotating shaft 50 to rotate. The bracket 52 has a parallelogram structure and is composed of two short rods 53 and two long rods 54. The long rods 54 and the short rods 53 are connected by a hinge. Two vertical slide rails 55 are fixed on the material rack body 39. Each vertical slide rail 55 is provided with a slider 56. The slider 56 can move vertically on the vertical slide rail 55. The two sets of brackets 52 are respectively set on the two sliders 56, and the short rods 53 at the bottom of the bracket 52 are fixed on the sliders 56.

[0048] Both ends of the rotating shaft 50 are connected to the long rods 54 of the two sets of brackets 52 via rocker arms 57. One end of the rocker arm 57 is fixed to the rotating shaft 50, and the other end of the rocker arm 57 is rotatably mounted on the long rods 54 of the brackets 52 via pins 58. A second locking plate 59 is fixed on the short rods 53 at the top of the two sets of brackets 52. Both the first locking plate 45 and the second locking plate 59 have V-shaped slots. The controller is connected to the stepper motor 40 and the drive motor 51 respectively.

[0049] The feeding process is as follows: First, the worker inserts a long rod 101 into the profile 100. The length of the long rod 101 must be greater than the length of the profile 100. After insertion, ensure that both ends of the long rod 101 protrude outward from the profile 100. Then, the profile 100 is placed on two corresponding first clamping plates 45. The two ends of the long rod 101 inserted into the profile 100 are placed on the V-shaped grooves of the two first clamping plates 45. The stepper motor 40 drives the transmission rod 46 to rotate through the active sprocket 48, the driven sprocket 47 and the chain. The transmission rod 46 drives the two first sprockets 42 to rotate. The first sprockets 42 drive the conveyor chain 44 to drive. Finally, under the synchronous transmission of the two conveyor chains 44, the profile 100 on the two first clamping plates 45 moves towards the profile lifting mechanism.

[0050] The profile lifting mechanism is used to lift the conveyed profile 100 onto the channel steel 25 of the two supports 24. The specific process is as follows: The drive motor 51 drives the rotating shaft 50 to rotate. The two ends of the rotating shaft 50 respectively pull the two brackets 52 to move synchronously through the rocker arm 57. The rocker arm 57 rotates around one end and pulls the long rod 54 of the bracket 52. As the rocker arm 57 is pulled, the bracket 52 moves upward on the vertical slide rail 55 along with the slider 56. At the same time, the short rod 53 at the top moves towards the support 24. As the direction moves, the two second clamping plates 59 on the final bracket 52 lift the exposed ends of the long rod 101 at both ends of the profile 100 and move them onto the channel steel 25 of the support 24. Then, the bracket 52 moves downward on the vertical slide rail 55, delivering the two ends of the long rod 101 to the channel steel 25 of the two supports 24. At the same time, the short rod 53 on the upper part of the bracket 52 moves towards the first clamping plate 45 to begin lifting the next profile 100, thus completing the loading of the profile 100.

[0051] The automatic unloading device 38 and the automatic loading device 37 have the same structure. The unloading process is the opposite of the loading process. The specific unloading steps will not be repeated here.

[0052] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary spraying device, characterized in that: The system includes a control box, a rotary spraying box, and a frame. The rotary spraying box includes a base frame and an outer box. The base frame spans the middle of the frame, and the outer box is mounted on the base frame. The outer box has access openings on both the front and rear sides. A rotary spraying mechanism is also mounted on the base frame and is located inside the outer box. The rotary spraying mechanism includes a support frame, a cylindrical body, and a rear cover plate. Both the support frame and the rear cover plate are mounted on a base frame. The rear cover plate has a through hole located at one of the openings. A mounting cylinder is fixed to the support frame. One end of the cylindrical body is fitted onto the mounting cylinder. An inner core cylinder is rotatably mounted inside the mounting cylinder via bearings. A driven pulley is located at one end of the inner core cylinder, and the other end of the inner core cylinder extends into the cylindrical body. A disc is fixed to the end of the inner core cylinder, and several support arms are fixed to the disc. All support arms are evenly arranged along the axis of the disc, and each support arm is parallel to the axis of the cylindrical body. A paint spray gun is mounted on each support arm. A spraying motor is also mounted on the base frame. A drive pulley is mounted on the main shaft of the spraying motor, and a transmission belt is provided between the drive pulley and the driven pulley. The rear cover plate is located at the other end of the cylindrical body, and the axis of the through hole coincides with the axis of the cylindrical body. There is a gap between the rear cover plate and the end of the cylindrical body. The frame is equipped with a reciprocating drive mechanism and two guide rails. Two slides are mounted on the two guide rails and are connected by a connecting rod. The reciprocating drive mechanism is used to drive the two slides to slide synchronously on the guide rails. Each slide is equipped with a support and a channel steel is fixed on the support. The channel steels of the two supports are located on a straight line. The control box contains a controller, which is connected to the spraying motor, the reciprocating drive mechanism, and all paint spray guns.

2. The rotary spraying equipment according to claim 1, characterized in that: A turntable bearing is provided between the end of the cylindrical body and the mounting cylinder. The outer ring of the turntable bearing is fixed to the end of the cylindrical body by several screws, and the inner ring of the turntable bearing is fixed to the mounting cylinder. The outer ring of the turntable bearing has a gear ring structure. A cylinder self-cleaning motor is installed on the bottom frame of the box. A drive gear is installed on the main shaft of the cylinder self-cleaning motor. The drive gear meshes with the gear ring structure of the turntable bearing. A spray pipe is installed on the rear cover plate. The spray pipe is arranged along the axial direction of the cylinder and is located in the lower middle part of the cylinder. A row of spray holes is started at the bottom of the spray pipe and faces the inner wall of the cylinder.

3. The rotary spraying equipment according to claim 2, characterized in that: The rear cover is equipped with a scraper and an air knife, which are located on opposite sides of the spray pipe, with the air knife above the scraper. The blade of the scraper is close to the inner wall of the cylinder, and the air knife faces the inner wall of the cylinder.

4. The rotary spraying equipment according to claim 1, characterized in that: A sludge collection tray is placed on the bottom frame of the box, and the sludge collection tray is located directly below the gap between the rear cover plate and the end of the cylindrical body.

5. A rotary spraying device according to claim 1, characterized in that: The reciprocating drive mechanism includes a forward and reverse motor and a second pulley. The forward and reverse motor is mounted on the frame, and a first pulley is mounted on the main shaft of the forward and reverse motor. The second pulley is mounted on the frame by rotation. A toothed belt is provided between the first pulley and the second pulley, and one of the slides is fixed on the toothed belt. The controller is connected to the forward and reverse motor.

6. The rotary spraying equipment according to claim 1, characterized in that: It also includes an automatic feeding device and an automatic unloading device, which are located on both sides of the rotary spray box. The automatic feeding device and the automatic unloading device have the same structure. The automatic feeding device includes a profile lifting mechanism and a material rack. A stepper motor and two sets of profile conveying mechanisms are installed on the material rack. The two sets of profile conveying mechanisms are arranged side by side. Each set of profile conveying mechanisms includes a first sprocket and a second sprocket. The first sprocket and the second sprocket are rotatably installed at both ends of the material rack. A conveying chain is arranged between the first sprocket and the second sprocket. Several first clamping plates are arranged on the conveying chain. All the first clamping plates are arranged side by side at equal intervals. The first sprockets of the two sets of profile conveying mechanisms are connected by a transmission rod. A driven sprocket is arranged on the transmission rod. A driving sprocket is installed on the stepper motor. A chain is arranged between the driving sprocket and the driven sprocket. The profile lifting mechanism is located at one end of the material rack body. The profile lifting mechanism includes a rotating shaft, a drive motor, and two sets of brackets. The rotating shaft is mounted on the material rack body by rotation. The drive motor is used to drive the rotating shaft to rotate. The bracket is a parallelogram structure and consists of two short rods and two long rods. The long rods and short rods are connected by a hinge. Two vertical slide rails are fixed on the material rack body. Each vertical slide rail is equipped with a slider. The slider can move vertically on the vertical slide rail. The two sets of brackets are respectively set on the two sliders, and the short rods at the bottom of the brackets are fixed on the sliders. Both ends of the rotating shaft are connected to the long rods of the two sets of brackets by rocker arms. One end of the rocker arm is fixed to the rotating shaft, and the other end of the rocker arm is rotatably mounted on the long rod of the bracket by a pin. A second locking plate is fixed on the short rod at the top of both sets of brackets. Both the first and second locking plates have V-shaped slots. The controller is connected to both the stepper motor and the drive motor.

7. The rotary spraying equipment according to claim 1, characterized in that: An exhaust vent is provided on the rear cover, and an exhaust pipe is connected to the exhaust vent.

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