Surface paint spraying process applied to rotational molding equipment

Abstract

The invention relates to the technical field of paint spraying treatment, in particular to a surface paint spraying process applied to rotational molding equipment, which comprises the technological process of component oil removal, cleaning and drying, painting, drying and inspection and warehousing. According to the paint spraying device, the open grooves are formed in the side faces of the sliding boxes, the parts can be surrounded by the two sliding boxes, the parts are separated from the outside, then paint is sprayed to the parts through the spray heads, the spraying condition can be observed through the transparent plates in the open grooves, and during spraying, the parts are covered with the sliding boxes; the device is small in size, small in occupied area, low in cost and flexible to use, the end of the transparent film is wound around the winding rod, the transparent film can shield the transparent plate, the winding rod can be rotated, the transparent film is wound through the winding rod, the transparent film contaminated with much paint is wound into the fixing cylinder, and the device is convenient to use and high in practicability. And the transparent film at the open slot is convenient to replace.

Description

Technical Field

[0001] This invention relates to the field of spray painting technology, and more specifically to a surface spray painting process applied to rotational molding equipment. Background Technology

[0002] Rotational molding is a thermoplastic hollow molding method. In the production process, plastic raw materials are first added to a mold, and then the mold is continuously rotated along two vertical axes and heated. The plastic raw materials inside the mold are gradually and evenly coated, melted and adhered to the entire surface of the mold cavity, forming the desired shape. Rotational molding is also frequently used in the production of some amusement equipment. After the parts of amusement equipment are produced, they often need to be painted to improve their wear resistance and weather resistance, while also providing excellent aesthetic effects.

[0003] When painting rotationally molded amusement equipment parts using existing spray painting methods, the parts are often irregularly shaped. Therefore, workers usually hold the spray nozzles and spray the parts directly onto the surface. This causes paint mist to be sprayed directly into the air, resulting in significant air pollution. If a dedicated spray painting room is set up, it would require a large space to facilitate the movement of the parts, which would also be relatively expensive. Summary of the Invention

[0004] To overcome the aforementioned technical problems, the present invention aims to provide a surface painting process for rotational molding equipment. This process involves opening slots on the sides of sliding boxes, allowing two sliding boxes to enclose the components and isolate them from the outside environment. Paint is then sprayed onto the components through a nozzle. The painting process can be observed through a transparent plate within the opening slots. During painting, the sliding boxes cover the components, preventing paint mist from polluting the outside air. Furthermore, the device is small in size, occupies a small area, has low cost, and is highly flexible in use.

[0005] The objective of this invention can be achieved through the following technical solutions: A surface painting process for rotational molding equipment includes a process flow of degreasing, cleaning and drying, painting, baking, and inspection before warehousing. The specific process steps are as follows: (1) Degreasing of parts: Use degreasing agent to degrease the surface of the amusement equipment parts to be rotomolded and remove dirt, debris and other contaminants from their surface; (2) Cleaning and drying: The surface of the rotationally molded parts is rinsed in a cleaning tank to remove residual degreasing agent and impurities. After cleaning, the surface of the parts is dried to remove water stains. (3) Painting: Place the dried parts into the painting device and use the painting device to spray paint the surface of the parts, thereby painting the surface of the parts; (4) Drying: After the painting is completed, hot air is introduced into the painting device to dry the paint layer on the surface of the parts. (5) Inspection and warehousing: After the parts are dried, they are taken out of the painting equipment and then inspected for quality problems such as damage to the paint layer on the surface of the parts. Parts without quality problems are stored in the warehouse.

[0006] Furthermore, in step (5), after inspecting the parts, a paint gun is used to repaint the damaged surfaces of the parts with quality problems.

[0007] Furthermore, the painting device described in steps (3) and (4) includes a placement module, and adjustment modules are provided on both sides of the placement module. The placement module includes two enclosed sliding boxes, and a support base is provided at the bottom of the two sliding boxes. A support plate is fixedly connected to the top surface of the support base, and the bottom surface of the support plate is slidably connected to the bottom surface of the two sliding boxes. A conveying pipe is connected to the top side of the sliding box. An opening slot is provided on both sides of the sliding box. A pressure frame is slidably connected to the inner side of the opening slot. A transparent plate is fixedly connected to the inner side of the pressure frame. The adjustment module includes a fixing frame. A sliding seat is slidably connected to the inner side of the fixing frame. A connecting pipe is slidably connected to the inner side of the sliding seat. A nozzle is fixedly connected to one end of the connecting pipe inside the sliding box, and a hose is fixedly connected to the other end of the connecting pipe outside the sliding box. A connecting strip is fixedly connected to the top and bottom surfaces of the sliding seat and is slidably connected to the inner side of the fixing frame.

[0008] After placing the rotationally molded parts of the amusement equipment on top of the support plate and between two sliding boxes, the parts are isolated from the outside environment by the two sliding boxes. At this time, paint is supplied to the nozzle located in the sliding box through the connecting pipe, and the parts are sprayed with paint through the nozzle. The spraying process can be observed through the transparent plate in the opening slot. During spraying, the connecting pipe can be moved along the inside of the sliding seat as needed to move the nozzle closer to or away from the parts. At the same time, the sliding seat can move the connecting pipe up or down to adjust the height of the nozzle and spray various parts of the parts. When the sliding seat moves up or down, the inside of the fixing frame can be blocked by the connecting strap, and the parts can be covered by the sliding boxes to prevent paint mist from polluting the outside air and avoiding harm to the workers. It does not require workers to wear various protective equipment in a closed environment. The device is small in size, occupies little space, has low cost, and is relatively flexible in use.

[0009] Furthermore, the bottom surface of the sliding box is fixedly connected to two support frames, the bottom surface of the support frames is provided with two rollers, the inner top surface of the support frames is fixedly connected to a fixing block, the inner sides of the two fixing blocks located at the bottom of the same sliding box are rotatably connected to a lead screw, the side of the support base is fixedly connected to two screw-fit cylinders corresponding to the lead screw, and one end of the lead screw is screwed to the inner side of the adjacent screw-fit cylinder. The support frame and the support base can be fixed to each other through the connection between the lead screw and the screw-fit cylinder, thereby fixing the position of the sliding box. The lead screw can be rotated to disengage the lead screw from the screw-fit cylinder. At this time, the sliding box can be moved away from the support plate, the two sliding boxes can be opened, and then the rotationally molded amusement equipment parts can be placed between the two sliding boxes.

[0010] Furthermore, a drive motor is fixedly connected to the bottom surface of the support base, and a drive shaft that is rotatably connected to the inner side of the support plate is connected to the output end of the drive motor. A disc that is rotatably connected to the top surface of the support plate is fixedly connected to the top of the drive shaft. Parts can be placed on the disc. During painting, the drive motor can drive the drive shaft to rotate, and the drive shaft can drive the disc to rotate, thereby rotating the parts and allowing the parts to pass through the spray nozzle in sequence for comprehensive painting of the parts surface.

[0011] Furthermore, the following features are provided: a fixed frame is fixedly connected to the inner side of the opening slot; fixed cylinders are fixedly connected to both sides of the bottom surface of the sliding box, and adjacent fixed cylinders at the bottom of different sliding boxes are in contact with each other; the support frame is located between two adjacent fixed cylinders; a cover is slidably inserted into the end of the fixed cylinder away from the support base; a winding rod is rotatably connected to the side of the cover; a locking block is fixedly connected to the inner side of the end of the winding rod inside the fixed cylinder, and adjacent locking blocks mesh with each other; a strip-shaped groove is opened on the side of the fixed cylinder away from the support frame; a positioning screw is screwed onto the top of the side of the cover and screwed onto the inner side of the fixed cylinder; a transparent film is provided on the top of the sliding box; both ends of the transparent film pass through the space between the adjacent fixed frame and the pressure frame, and both ends of the transparent film extend to the bottom of the sliding box and pass through the corresponding strip-shaped groove; both ends of the transparent film extend into the corresponding fixed cylinder and are wound around the winding rod; the positioning screw is located in the strip-shaped groove. At the top, the cover can be fixed to the fixed cylinder with positioning screws. A rotating ring that slides into the end of the take-up rod can be rotatably installed on the inner side of the fixed cylinder. The rotating ring supports the end of the take-up rod located at the toothed block. The transparent plate can be covered by a transparent film. During painting, the paint mist will only adhere to the transparent film. After a lot of paint adheres to the transparent film, the pressure frame can be moved away from the fixed frame so that the pressure frame no longer presses down on the transparent film. At this time, one take-up rod at the bottom of one sliding box can be rotated. Two adjacent take-up rods at the bottom of different sliding boxes can rotate synchronously through the toothed block. When the take-up rod rotates, it can wind up the transparent film, thereby winding the paint-adhered transparent film into one fixed cylinder and releasing the paint-free part of the transparent film from the other fixed cylinder. This allows the paint-free part of the transparent film to move to the position of the opening slot. Then, the pressure frame can press the transparent film against the fixed frame, making it easy to replace the transparent film at the opening slot and facilitating the smooth painting process.

[0012] Furthermore, the four corners of the sliding box are rotatably connected to round rods, and the transparent film wraps around the sides of the four round rods. The round rods can support the transparent film, making it easier for the transparent film to move on the surface of the sliding box.

[0013] Furthermore, each of the four corners of the pressure frame is slidably connected to a positioning rod. One end of the positioning rod is fixedly connected to the side of the sliding box. A return spring is fixedly connected to the side of the positioning rod and to the side of the pressure frame. Four sliding blocks are slidably connected to the two sides of the sliding box corresponding to the corners of the pressure frame. Under the action of the return spring, the pressure frame can press the transparent film onto the fixed frame. The positioning rod can support the pressure frame. The sliding blocks can be moved so that they are inserted between the pressure frame and the sliding box. The pressure frame is pushed out by the sliding blocks, and then the position of the transparent film can be adjusted.

[0014] Furthermore, the top and bottom surfaces of the sliding seat are both fixedly connected to a take-up seat, and the opposite surfaces of the two take-up seats are fixedly connected to the adjacent sliding box. A take-up drum is rotatably connected to the inner side of the take-up seat. One end of the connecting strip extends into the interior of the adjacent take-up seat and is wound around the take-up drum. A connecting rod is provided inside the take-up drum and rotatably connected to the inner side of the take-up seat. The connecting rod at the top is rotatably mounted on the inner side of the top take-up seat, and the end of the connecting rod at the bottom is fixedly mounted on the inner side of the bottom take-up seat. A spring is provided between the take-up drum and the connecting rod. A power box is fixedly connected to the side of the top take-up seat. A power motor is provided inside the power box, and the output end of the power motor is drivenly connected to one end of the connecting rod at the top.

[0015] The spring restricts the rotation of the winding drum, which in turn restricts the position of the sliding seat via a connecting belt. When the motor drives the connecting rod at the top to rotate forward, the spring at the top tightens, making its winding force greater than that of the spring at the bottom. This causes the top winding drum to wind up the connecting belt, which in turn pulls the sliding seat upward, causing the sliding seat to move the connecting tube upward. When the motor drives the connecting rod at the top to rotate in the opposite direction, the spring at the top relaxes, making its winding force less than that of the spring at the bottom. This causes the bottom winding drum to wind up the connecting belt, which in turn pulls the sliding seat downward, causing the sliding seat to move the connecting tube downward, thus enabling all-around spraying of the parts.

[0016] Furthermore, the sliding seat is fixedly connected to a fixed seat on the side outside the sliding box. A limit block is slidably connected to the inner side of the fixed seat. An adjusting plate is fixedly connected to the side of the connecting pipe. A pulling frame is slidably connected to the side of the adjusting plate away from the limit block. A sliding rod is fixedly connected to the side of the pulling frame and slidably connected to the inner side of the adjusting plate. A return spring three is fixedly connected to the inner side of the adjusting plate on both the top and bottom inner sides of the sliding rod. A positioning frame is slidably connected to the side of the limit block and fixedly connected to the side of the sliding rod. A return spring two is fixedly connected to the inner side of the fixed seat on both the top and bottom inner sides of the limit block. A conductive rod is embedded in the top and bottom surfaces of the limit block. A conductive block is fixedly connected to the corresponding conductive rod on the inner top and inner bottom surfaces of the fixed seat.

[0017] The pull frame can push the adjustment plate to move horizontally, which in turn drives the connecting pipe to move horizontally, thereby adjusting the horizontal position of the spray head. The pull frame can drive the limit block to move up and down through the sliding rod and positioning frame. The limit block can drive the conductive rod to move. When the pull frame moves the limit block upward, the conductive rod at the top will contact and connect with the conductive block. At this time, the power motor can drive the connecting rod at the top to rotate forward, causing the top take-up drum to rotate and wind up the connecting strip, thus moving the connecting pipe upward. When the pull frame moves the limit block downward, causing the conductive rod at the bottom to contact and connect with the conductive block, the power motor will drive the connecting rod at the top to rotate in the opposite direction, causing the bottom take-up drum to wind up the connecting strip, thus moving the sliding seat and the connecting pipe downward for all-round spraying of parts. When the pull frame stops moving up and down, the sliding seat can be supported by a spring to facilitate its movement.

[0018] The beneficial effects of this invention are: 1. The sliding box has an opening slot on its side. After the parts are placed on the top of the support plate, the parts can be enclosed by two sliding boxes, isolating them from the outside. Paint can be delivered through a connecting pipe extending into the sliding box, and then sprayed onto the parts through a nozzle. The spraying process can be observed through a transparent plate in the opening slot. During spraying, the parts are covered by the sliding box to prevent paint mist from polluting the outside air and causing harm to the workers. At the same time, workers do not need to wear various protective equipment in a closed environment. The device is small in size, occupies little space, has low cost, and is flexible in use. 2. By winding the end of the transparent film onto the take-up bar, the transparent film can block the transparent panel. During painting, paint mist will adhere to the transparent film. If a lot of paint adheres to the transparent film and affects visibility, the pressure frame can be moved away from the transparent film to loosen it. Then, the take-up bar can be rotated to wind up the transparent film, and the transparent film with a lot of paint adheres can be wound into the fixed cylinder. This makes it easy to replace the transparent film at the opening slot and facilitates the smooth progress of painting. 3. By winding one end of the connecting strip onto the take-up drum, the connecting tube can be moved by pulling the frame to adjust the distance between the nozzle and the parts. The limit block can be moved up or down by pulling the frame. When the top conductive rod contacts the conductive block, the power motor can drive the connecting rod to rotate in the forward direction, causing the top take-up drum to wind up the connecting strip. This causes the sliding seat to move the connecting tube upward. When the bottom conductive rod contacts the conductive block, the power motor can drive the connecting rod to rotate in the reverse direction, causing the top take-up drum to release the connecting strip. At this time, the sliding seat can move the connecting tube downward, allowing the nozzle to move up and down relatively quickly, facilitating rapid painting of the amusement equipment parts. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a process flow diagram of the present invention; Figure 2 This is a schematic diagram of the placement module structure in this invention; Figure 3 This is a schematic diagram of the bottom structure of the sliding box in this invention; Figure 4 This is a front view of the internal structure of the sliding box in this invention; Figure 5 This is a schematic diagram of the internal side view of the sliding box in this invention; Figure 6 This is a schematic diagram of the pressure frame structure in this invention; Figure 7 This is a front view schematic diagram of the internal structure of the fixed cylinder in this invention; Figure 8 This is a schematic diagram of the adjustment module structure in this invention; Figure 9 This is a schematic diagram of the fixing frame structure in this invention; Figure 10 This is a front view schematic diagram of the internal structure of the fixing base in this invention; Figure 11 This is a front view schematic diagram of the internal structure of the winding seat in this invention.

[0021] In the diagram: 100, Placement module; 110, Support base; 111, Support plate; 112, Disc; 113, Drive motor; 114, Grinding cylinder; 120, Sliding box; 121, Opening slot; 122, Round rod; 123, Fixing frame; 124, Sliding block; 125, Conveying pipe; 130, Fixing cylinder; 131, Cover; 132, Rewinding rod; 133, Toothed block; 134, Positioning screw; 135, Strip groove; 140, Support frame; 141, Roller; 142, Fixing block; 150, Pressure frame; 151, Positioning rod; 152, Reset. Spring 1; 160, Lead screw; 170, Transparent film; 200, Adjustment module; 210, Fixing frame; 220, Sliding seat; 221, Fixing seat; 222, Limiting block; 223, Reset spring 2; 224, Conductive rod; 230, Connecting pipe; 231, Nozzle; 240, Adjustment plate; 241, Pulling frame; 242, Reset spring 3; 243, Sliding rod; 244, Positioning frame; 250, Take-up seat; 251, Connecting rod; 252, Take-up drum; 253, Clockwork spring; 260, Power box; 270, Connecting belt; 300, Hose. Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-11 As shown, a surface painting process applied to rotational molding equipment includes a process flow of degreasing parts, cleaning and drying, painting, baking, and inspection and warehousing. The specific process steps are as follows: (1) Degreasing of parts: Use degreasing agent to degrease the surface of the amusement equipment parts to be rotomolded and remove dirt, debris and other contaminants from their surface; (2) Cleaning and drying: The surface of the rotationally molded parts is rinsed in a cleaning tank to remove residual degreasing agent and impurities. After cleaning, the surface of the parts is dried to remove water stains. (3) Painting: Place the dried parts into the painting device and use the painting device to spray paint the surface of the parts, thereby painting the surface of the parts; (4) Drying: After the painting is completed, hot air is introduced into the painting device to dry the paint layer on the surface of the parts. (5) Inspection and warehousing: After the parts are dried, they are taken out of the painting equipment and then inspected for quality problems such as damage to the paint layer on the surface of the parts. Parts without quality problems are stored in the warehouse.

[0024] After inspecting the parts in step (5), the damaged surfaces of the parts with quality problems are repainted using a spray gun.

[0025] The painting device in steps (3) and (4) includes a placement module 100, with adjustment modules 200 on both sides of the placement module 100. The placement module 100 includes two enclosing sliding boxes 120, with a support base 110 at the bottom of the two sliding boxes 120. A support plate 111 is fixedly connected to the top surface of the support base 110, and the bottom surface of the support plate 111 is slidably connected to the inner bottom surface of the two sliding boxes 120. A conveying pipe 125 is connected to the top of the side of the sliding box 120. An opening slot 121 is opened on both sides of the sliding box 120. The inner side of the opening slot 121 is... A pressure frame 150 is slidably connected to the surface. A transparent plate is fixedly connected to the inner side of the pressure frame 150. The adjustment module 200 includes a fixing frame 210. A sliding seat 220 is slidably connected to the inner side of the fixing frame 210. A connecting pipe 230 is slidably connected to the inner side of the sliding seat 220. A nozzle 231 is fixedly connected to one end of the connecting pipe 230 inside the sliding box 120, and a hose 300 is fixedly connected to the other end of the connecting pipe 230 outside the sliding box 120. A connecting strip 270 is fixedly connected to both the top and bottom surfaces of the sliding seat 220 and is slidably connected to the inner side of the fixing frame 210.

[0026] After the rotational molding parts of the amusement equipment are placed on top of the support plate 111 and between the two sliding boxes 120, the parts are isolated from the outside world by the two sliding boxes 120. At this time, paint is supplied to the nozzle 231 located in the sliding box 120 through the connecting pipe 230. The parts are sprayed with paint through the nozzle 231. The spraying process can be observed through the transparent plate in the opening slot 121. During spraying, the connecting pipe 230 can be moved along the inside of the sliding seat 220 as needed to move the nozzle 231 closer to or away from the parts. At the same time, the sliding seat 220 can drive the connecting pipe 230 to move up or down, thereby adjusting the height of the nozzle 231 and spraying various positions of the parts. When the sliding seat 220 moves up or down, the inside of the fixing frame 210 can be blocked by the connecting strap 270 and the parts can be covered by the sliding box 120, which can prevent paint mist from polluting the outside air and avoid harming the workers. It does not require the workers to wear various protective equipment in a closed environment. The device is small in size, occupies a small area, has low cost, and is more flexible in use.

[0027] Two support frames 140 are fixedly connected to the bottom surface of the sliding box 120. Two rollers 141 are provided on the bottom surface of the support frame 140. A fixing block 142 is fixedly connected to the inner top surface of the support frame 140. A lead screw 160 is rotatably connected to the inner side of the two fixing blocks 142 located at the bottom of the same sliding box 120. Two screw-fit cylinders 114 are fixedly connected to the side of the support base 110 corresponding to the lead screw 160. One end of the lead screw 160 is screwed to the inner side of the adjacent screw-fit cylinder 114. The connection between the lead screw 160 and the screw-fit cylinder 114 can fix the support frame 140 and the support base 110 to each other, thereby fixing the position of the sliding box 120. The lead screw 160 can be rotated to disengage the lead screw 160 from the screw-fit cylinder 114. At this time, the sliding box 120 can be moved away from the support plate 111 to open the two sliding boxes 120. Then, the rotationally molded amusement equipment parts can be placed between the two sliding boxes 120.

[0028] A drive motor 113 is fixedly connected to the inner bottom surface of the support base 110. The output end of the drive motor 113 is connected to a drive shaft that is rotatably connected to the inner side of the support plate 111. The top end of the drive shaft is fixedly connected to a disc 112 that is rotatably connected to the top surface of the support plate 111. Parts can be placed on the disc 112. During painting, the drive motor 113 can drive the drive shaft to rotate, which in turn drives the disc 112 to rotate, thereby causing the parts to rotate and pass through the spray nozzle 231 in sequence for comprehensive painting of the parts surface.

[0029] A fixed frame 123 is fixedly connected to the inner side of the opening slot 121. Fixed cylinders 130 are fixedly connected to both sides of the bottom surface of the sliding box 120. Adjacent fixed cylinders 130 located at the bottom of different sliding boxes 120 are in contact with each other. A support frame 140 is located between two adjacent fixed cylinders 130. A cover 131 is slidably inserted into the end of the fixed cylinder 130 away from the support base 110. A winding rod 132 is rotatably connected to the side of the cover 131. A locking tooth block 133 is fixedly connected to the inner side of the end of the winding rod 132 inside the fixed cylinder 130, and two adjacent locking teeth blocks 133 mesh with each other. A strip groove 135 is provided on the side away from the support frame 140. A positioning screw 134 is screwed onto the top of the side of the cover 131 and screwed onto the inner side of the fixed cylinder 130. A transparent film 170 is provided on the top of the sliding box 120. Both ends of the transparent film 170 pass through the space between the adjacent fixed frame 123 and the pressure frame 150, and both ends of the transparent film 170 extend to the bottom of the sliding box 120 and pass through the interior of the corresponding strip groove 135. Both ends of the transparent film 170 extend into the interior of the corresponding fixed cylinder 130 and are wound around the winding rod 132. The positioning screw 134 is located at the top of the strip groove 135 and can be positioned by... Screw 134 fixes the cover 131 to the fixed cylinder 130. A rotating ring that slides into the end of the take-up rod 132 can be rotatably installed on the inner side of the fixed cylinder 130. The rotating ring supports one end of the take-up rod 132 located at the toothed block 133. The transparent plate can be blocked by the transparent film 170. During painting, the paint mist will only adhere to the transparent film 170. After a lot of paint adheres to the transparent film 170, the pressure frame 150 can be moved away from the fixed frame 123 so that the pressure frame 150 no longer presses down on the transparent film 170. At this time, one of the take-up rods 132 at the bottom of the sliding box 120 can be rotated. Two adjacent winding rods 132 at the bottom of different sliding boxes 120 can rotate synchronously through the toothed block 133. When the winding rod 132 rotates, it can wind up the transparent film 170, thereby winding the transparent film 170 contaminated with spray paint into a fixed cylinder 130, and releasing the uncontaminated part of the transparent film 170 from the other fixed cylinder 130. This allows the uncontaminated part of the transparent film 170 to move to the position of the opening slot 121. Then, the transparent film 170 can be pressed against the fixed frame 123 by the pressure frame 150, which facilitates the replacement of the transparent film 170 at the opening slot 121 and promotes the smooth progress of spray painting.

[0030] The sliding box 120 has round rods 122 rotatably connected to its four corners, and the transparent film 170 passes around the sides of the four round rods 122. The round rods 122 can support the transparent film 170, making it easy for the transparent film 170 to move on the surface of the sliding box 120. Positioning rods 151 are slidably connected to the four corners of the side of the pressure frame 150. One end of the positioning rod 151 is fixedly connected to the side of the sliding box 120. A return spring 152, which is fixedly connected to the side of the pressure frame 150, is fixedly connected to the side of the positioning rod 151. Four sliding blocks 124 are slidably connected to the two sides of the sliding box 120 corresponding to the corners of the pressure frame 150. Under the action of the return spring 152, the pressure frame 150 can press the transparent film 170 onto the fixed frame 123. The positioning rods 151 can support the pressure frame 150. The sliding blocks 124 can be moved so that they are inserted between the pressure frame 150 and the sliding box 120. The pressure frame 150 is pushed out by the sliding blocks 124, and then the position of the transparent film 170 can be adjusted.

[0031] A take-up seat 250 is fixedly connected to both the top and bottom surfaces of the sliding seat 220, and the opposite surfaces of the two take-up seats 250 are fixedly connected to the adjacent sliding box 120. A take-up drum 252 is rotatably connected to the inner side of the take-up seat 250. One end of the connecting belt 270 extends into the interior of the adjacent take-up seat 250 and is wound around the take-up drum 252. A connecting rod 251 is provided inside the take-up drum 252 and is rotatably connected to the inner side of the take-up seat 250. The connecting rod 251 located at the top is rotatably set on the inner side of the top take-up seat 250, and the end of the connecting rod 251 located at the bottom is fixedly set on the inner side of the bottom take-up seat 250. A spring spring 253 is provided between the take-up drum 252 and the connecting rod 251. A power box 260 is fixedly connected to the side of the top take-up seat 250. A power motor is provided inside the power box 260, and the output end of the power motor is connected to one end of the connecting rod 251 located at the top.

[0032] The spring 253 restricts the rotation of the winding drum 252. The winding drum 252 restricts the position of the sliding seat 220 via the connecting belt 270. When the motor drives the connecting rod 251 at the top to rotate forward, the spring 253 at the top will tighten, making the winding force of the spring 253 at the top greater than that at the bottom. This causes the winding drum 252 at the top to wind up the connecting belt 270, which in turn pulls the sliding seat 220 upward through the connecting belt 270, causing the sliding seat 220 to move. When the moving connecting tube 230 moves upward, and the power motor drives the connecting rod 251 at the top to rotate in the opposite direction, the top spring 253 will relax, making the winding force of the top spring 253 less than that of the bottom spring 253. Thus, under the action of the bottom spring 253, the bottom winding drum 252 can wind up the connecting strip 270 on it. The bottom connecting strip 270 pulls the sliding seat 220 downward, causing the sliding seat 220 to drive the connecting tube 230 downward, thereby spraying the parts from all directions.

[0033] A fixed seat 221 is fixedly connected to the side of the sliding seat 220 outside the sliding box 120. A limit block 222 is slidably connected to the inner side of the fixed seat 221. An adjusting plate 240 is fixedly connected to the side of the connecting pipe 230. A pulling frame 241 is slidably connected to the side of the adjusting plate 240 away from the limit block 222. A sliding rod 243 is fixedly connected to the side of the pulling frame 241 and is slidably connected to the inner side of the adjusting plate 240. A return spring 242 is fixedly connected to the inner side of the adjusting plate 240 on both the top and bottom inner sides of the sliding rod 243. A positioning frame 244 is slidably connected to the side of the limit block 222 and is fixedly connected to the side of the sliding rod 243. A return spring 223 is fixedly connected to the inner side of the fixed seat 221 on both the top and bottom inner sides of the limit block 222. A conductive rod 224 is embedded in the top and bottom surfaces of the limit block 222. A conductive block is fixedly connected to the conductive rod 224 on the inner top and inner bottom surfaces of the fixed seat 221.

[0034] The pulling frame 241 can push the adjusting plate 240 to move horizontally, and the adjusting plate 240 can drive the connecting pipe 230 to move horizontally, thereby adjusting the horizontal position of the nozzle 231. The pulling frame 241 can drive the limiting block 222 to move up and down through the sliding rod 243 and the positioning frame 244. The limiting block 222 can drive the conductive rod 224 to move. When the pulling frame 241 moves the limiting block 222 upward, the conductive rod 224 at the top will contact and connect with the conductive block. At this time, the power motor can drive the connecting rod 251 at the top to rotate in the forward direction, so that the top winding drum 252 rotates to wind up the nozzle. The connecting belt 270 causes the connecting tube 230 to move upward. When the pulling frame 241 drives the limiting block 222 to move downward, and the conductive rod 224 at the bottom contacts the conductive block to conduct electricity, the power motor will drive the connecting rod 251 at the top to rotate in the opposite direction, causing the winding drum 252 at the bottom to wind up the connecting belt 270 on it. This causes the sliding seat 220 to drive the connecting tube 230 to move downward, allowing for all-round spraying of the parts. When the pulling frame 241 stops moving up and down, the sliding seat 220 can be supported by the spring 253 to facilitate the movement of the sliding seat 220.

[0035] Working principle: When in use, rotate the lead screw 160 to disengage it from the engagement cylinder 114. At this time, the sliding box 120 can be moved away from the support plate 111. Then, the rotational molding parts of the amusement equipment can be placed on the disc 112. Then, move the sliding box 120 in the opposite direction so that the two sliding boxes 120 surround the parts. Then, rotate the lead screw 160 in the opposite direction so that the end of the lead screw 160 engages with the adjacent engagement cylinder 114, fixing the support frame 140 and the support base 110 to each other, thereby fixing the sliding box 120 on the support base 110. Paint can be delivered to the connecting pipe 230 through the hose 300, and then sprayed onto the parts through the spray nozzle 231. The drive motor 113 can be started, and the drive motor 113 can drive the disc 112 to rotate through the transmission shaft, thereby causing the parts to rotate and pass through the spray nozzle 231 in sequence to spray the entire surface of the parts. During the spraying process, the spraying situation can be observed through the transparent plate and transparent film 170. The adjustment plate 240 can be moved horizontally by the pull frame 241. The adjustment plate 240 can move the connecting pipe 230 closer to or away from the sliding box 120, thereby adjusting the distance between the spray nozzle 231 and the parts as needed. The pull frame 241 can be moved upwards or downwards. The pull frame 241 can drive the limit block 222 to move via the sliding rod 243 and the positioning frame 244. The limit block 222 can drive the conductive rod 224 to move. When the pull frame 241 moves the limit block 222 upwards, the conductive rod 224 at the top will contact and connect with the conductive block. At this time, the power motor can drive the connecting rod 251 at the top to rotate forward. When the connecting rod 251 rotates forward, it will tighten the spring 253 at the top, thereby causing the winding drum 252 at the top to rotate and wind up the connecting strip 270. Then, the connecting strip 270 at the top pulls the sliding seat 220 upwards, causing the sliding seat 220 to drive the connecting tube 230 upwards. The top of the parts is sprayed as needed. When the pull frame 241 moves the limit block 222 downward, and the conductive rod 224 at the bottom contacts the conductive block to conduct electricity, the power motor will drive the connecting rod 251 at the top to rotate in the opposite direction, causing the top spring spring 253 to relax. At this time, under the action of the bottom spring spring 253, the bottom winding drum 252 can wind up the connecting strip 270 on it, and the top winding drum 252 can release the connecting strip 270 on it. Then, the connecting strip 270 at the bottom pulls the sliding seat 220 downward, causing the sliding seat 220 to drive the connecting tube 230 to move downward. The bottom of the parts is sprayed as needed, thereby spraying the parts in all directions. After the spraying is completed, hot air can be supplied to the sliding box 120 through the delivery pipe 125 to dry the paint layer on the surface of the parts. After drying, the screw 160 can be turned again to open the two sliding boxes 120, take out the parts, and carry out the next spraying. After a period of use, when the transparent film 170 becomes covered with a significant amount of paint, the sliding block 124 can be moved to insert itself between the pressure frame 150 and the sliding box 120. The sliding block 124 then pushes the pressure frame 150 out, preventing it from pressing down on the transparent film 170. At this point, a winding rod 132 at the bottom of one sliding box 120 can be rotated. The winding rod 132, via the locking tooth block 133, can drive a winding rod 132 at the bottom of the other sliding box 120. When the winding rod 132 rotates, it can wind up the transparent film 170, thereby winding the transparent film 170 with spray paint into the fixed cylinder 130, moving the unpainted part of the transparent film 170 to the position of the opening slot 121, and then the sliding block 124 can be moved out from between the pressure frame 150 and the sliding box 120. At this time, under the action of the return spring 152, the pressure frame 150 can be reinserted into the opening slot 121, and the transparent film 170 is pressed against the fixed frame 123.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A surface painting process applied to rotational molding equipment, characterized in that, The process flow includes component degreasing, cleaning and drying, painting, baking, and inspection before warehousing. The specific process steps are as follows: Parts degreasing: Use a degreasing agent to degrease the surface of the amusement equipment parts to be rotomolded, and remove dirt, debris and other contaminants from their surface; Cleaning and drying: The surface of the rotationally molded parts is rinsed in a cleaning tank to remove residual degreasing agent and impurities. After cleaning, the surface of the parts is dried to remove water stains. Painting: The dried parts are placed inside the painting equipment and the painting equipment is used to spray paint on the surface of the parts, thereby painting the surface of the parts; Drying: After the painting is completed, hot air is introduced into the painting equipment to dry the paint layer on the surface of the parts. Inspection and warehousing: After the parts are dried, they are taken out of the painting equipment and then inspected for quality problems such as damage to the paint layer on the surface of the parts. Parts without quality problems are stored in the warehouse.

2. The surface painting process applied to rotational molding equipment according to claim 1, characterized in that, After inspecting the parts in step (5), the damaged surfaces of the parts with quality problems are repainted using a spray gun.

3. The surface painting process applied to rotational molding equipment according to claim 1, characterized in that, The painting device described in steps (3) and (4) includes a placement module (100), with adjustment modules (200) on both sides of the placement module (100). The placement module (100) includes two enclosing sliding boxes (120), with support bases (110) at the bottom of the two sliding boxes (120). A support plate (111) is fixedly connected to the top surface of the support base (110), and the bottom surface of the support plate (111) is slidably connected to the bottom surface inside the two sliding boxes (120). A conveying pipe (125) is connected to the top of the side of the sliding box (120). An opening slot (121) is opened on both sides of the sliding box (120). A pressure frame (150) is slidably connected to the side. A transparent plate is fixedly connected to the inner side of the pressure frame (150). The adjustment module (200) includes a fixing frame (210). A sliding seat (220) is slidably connected to the inner side of the fixing frame (210). A connecting pipe (230) is slidably connected to the inner side of the sliding seat (220). A nozzle (231) is fixedly connected to one end of the connecting pipe (230) inside the sliding box (120), and a hose (300) is fixedly connected to the other end of the connecting pipe (230) outside the sliding box (120). A connecting strip (270) is fixedly connected to both the top and bottom surfaces of the sliding seat (220) and is slidably connected to the inner side of the fixing frame (210).

4. The surface painting process applied to rotational molding equipment according to claim 3, characterized in that, The bottom surface of the sliding box (120) is fixedly connected to two support frames (140). The bottom surface of the support frame (140) is provided with two rollers (141). The top surface of the support frame (140) is fixedly connected to a fixing block (142). The inner sides of the two fixing blocks (142) located at the bottom of the same sliding box (120) are rotatably connected to a lead screw (160). The side of the support base (110) is fixedly connected to two screw cylinders (114) corresponding to the lead screw (160), and one end of the lead screw (160) is screwed to the inner side of the adjacent screw cylinder (114).

5. The surface painting process applied to rotational molding equipment according to claim 3, characterized in that, A drive motor (113) is fixedly connected to the bottom surface of the support base (110). The output end of the drive motor (113) is connected to a drive shaft that is rotatably connected to the inner side of the support plate (111). A disc (112) that is rotatably connected to the top surface of the support plate (111) is fixedly connected to the top of the drive shaft.

6. The surface painting process applied to rotational molding equipment according to claim 4, characterized in that, A fixed frame (123) is fixedly connected to the inner side of the opening slot (121). Fixed cylinders (130) are fixedly connected to both sides of the bottom surface of the sliding box (120). Two adjacent fixed cylinders (130) located at the bottom of different sliding boxes (120) are in contact with each other. The support frame (140) is located between two adjacent fixed cylinders (130). A cover (131) is slidably inserted into the end of the fixed cylinder (130) away from the support base (110). A winding rod (132) is rotatably connected to the side of the cover (131). A toothed block (133) is fixedly connected to the inner side of the end of the winding rod (132) inside the fixed cylinder (130). Two adjacent toothed blocks (133) are fixedly connected to each other. 3) Interlocking: The side of the fixed cylinder (130) away from the support frame (140) is provided with a strip groove (135). The top of the side of the cover (131) is screwed with a positioning screw (134) that is screwed with the inner side of the fixed cylinder (130). The top of the sliding box (120) is provided with a transparent film (170). Both ends of the transparent film (170) pass through the space between the adjacent fixed frame (123) and the pressure frame (150). Both ends of the transparent film (170) extend to the bottom of the sliding box (120) and pass through the interior of the corresponding strip groove (135). Both ends of the transparent film (170) extend into the interior of the corresponding fixed cylinder (130) and are wound on the winding rod (132).

7. A surface painting process for rotational molding equipment according to claim 6, characterized in that, The sliding box (120) has round rods (122) rotatably connected to its four corners, and the transparent film (170) passes around the sides of the four round rods (122).

8. The surface painting process applied to rotational molding equipment according to claim 3, characterized in that, The four corners of the side of the pressure frame (150) are slidably connected with positioning rods (151). One end of the positioning rod (151) is fixedly connected to the side of the sliding box (120). The side of the positioning rod (151) is fixedly connected with a reset spring (152) that is fixedly connected to the side of the pressure frame (150). The two sides of the sliding box (120) are slidably connected with four sliding blocks (124) corresponding to the corners of the pressure frame (150).

9. A surface painting process for rotational molding equipment according to claim 3, characterized in that, The top and bottom surfaces of the sliding seat (220) are fixedly connected to take-up seats (250), and the opposite surfaces of the two take-up seats (250) are fixedly connected to the adjacent sliding box (120). A take-up drum (252) is rotatably connected to the inner side of the take-up seat (250). One end of the connecting strip (270) extends into the interior of the adjacent take-up seat (250) and is wound around the take-up drum (252). A connecting rod (251) is provided inside the take-up drum (252) and is rotatably connected to the inner side of the take-up seat (250). The connecting rod (251) located at the top is connected to the take-up seat (250). The rod (251) is rotatably mounted on the inner side of the top take-up seat (250), and the end of the connecting rod (251) at the bottom is fixedly mounted on the inner side of the bottom take-up seat (250). A spring spring (253) is provided between the take-up drum (252) and the connecting rod (251). A power box (260) is fixedly connected to the side of the top take-up seat (250). A power motor is provided inside the power box (260), and the output end of the power motor is connected to one end of the connecting rod (251) at the top.

10. A surface painting process for rotational molding equipment according to claim 3, characterized in that, The sliding seat (220) is fixedly connected to a fixed seat (221) on the side outside the sliding box (120). A limit block (222) is slidably connected to the inner side of the fixed seat (221). An adjusting plate (240) is fixedly connected to the side of the connecting pipe (230). A pulling frame (241) is slidably connected to the side of the adjusting plate (240) away from the limit block (222). A sliding rod (243) is fixedly connected to the side of the pulling frame (241) and slidably connected to the inner side of the adjusting plate (240). The inner sides of the top and bottom of the sliding rod (243) are both fixedly connected. A reset spring three (242) is fixedly connected to the inner side of the adjusting plate (240). The sliding rod (243) is slidably connected to the side of the positioning frame (244) which is fixedly connected to the side of the limiting block (222). The top and bottom inner sides of the limiting block (222) are both fixedly connected to a reset spring two (223) which is fixedly connected to the inner side of the fixed seat (221). The top and bottom surfaces of the limiting block (222) are both embedded with conductive rods (224). The top and bottom surfaces of the fixed seat (221) are both fixedly connected with conductive blocks corresponding to the conductive rods (224).

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