A spray painting equipment with anti-yellowing properties for plastic casings

Abstract

This utility model discloses a spray painting device for plastic shells with anti-yellowing capabilities, relating to the field of plastic shell spray painting technology. It includes a base plate and a filtration and recovery mechanism. The filtration and recovery mechanism is fixedly connected to the bottom of the base plate, and includes a collection tank fixedly connected to the bottom of the base plate. A ceramic membrane fine filter layer is provided at the top of the collection tank, and a stainless steel wire mesh coarse filter layer is provided at the top of the ceramic membrane fine filter layer. An output pipe is fixedly connected to the bottom of the collection tank, and a circulating gear pump is fixedly connected to one end of the output pipe. An adjusting spraying mechanism is fixedly connected to one side of the circulating gear pump. The stainless steel wire mesh coarse filter layer is horizontally placed at the paint recovery inlet. Using a stainless steel woven mesh, it physically intercepts paint films with larger diameters. Compared with existing ordinary spray painting equipment, it can recover excess paint, reduce impurities, improve paint utilization, reduce manufacturing costs and waste paint emissions, and improve coating uniformity, thus managing the paint lifecycle in a coordinated manner.

Description

Technical Field

[0001] This utility model relates to the field of plastic shell painting technology, specifically to a plastic shell anti-yellowing painting equipment. Background Technology

[0002] Plastic casing painting equipment is a professional coating equipment designed to improve the weather resistance of plastic casings and delay yellowing. By precisely spraying anti-yellowing coatings, a protective layer is formed on the plastic surface, blocking the aging and corrosion of plastics by factors such as ultraviolet rays and high temperatures. This equipment is widely used in the fields of household appliance casings, automotive interior parts, and electronic device casings. It can significantly improve the anti-yellowing cycle of plastic casings, extend product lifespan, and reduce later maintenance costs. However, existing plastic casing painting equipment has certain defects.

[0003] For example, a painting device for producing plastic shells, as described in application number CN202222040847.5, includes a main body, a painting mechanism, and a drying mechanism. The painting mechanism is located at the upper end of the main body, and the drying mechanism is located in the middle of the main body. The main body includes a device body, a fixed support plate, and support feet. The fixed support plate is fixedly installed at the lower end of the device body, and the support feet are fixedly installed at the lower end of the fixed support plate. The support feet are evenly distributed at the lower end of the fixed support plate. The painting mechanism includes a paint box, a box cover, threaded holes, bolts, a spray head, a motor, a clamping plate, a return spring, and a limiting plate. This painting device for producing plastic shells, through the installation of the painting mechanism, allows the electric push rod to easily drive the paint box to move linearly left and right to paint the material. The studs facilitate the installation and removal of the paint box, the bolts facilitate the addition of paint to the paint box, and the limiting plate facilitates the clamping of materials of different thicknesses. However, this painting equipment is prone to paint waste, uneven spraying distribution, high cost, difficult waste paint disposal, low efficiency, and large human error.

[0004] Therefore, in view of this, we have studied and improved the existing structure to propose a spray painting equipment with anti-yellowing capabilities for plastic shells. Utility Model Content

[0005] The purpose of this invention is to provide a spray painting device with anti-yellowing capabilities for plastic shells, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic shell anti-yellowing spray painting device, comprising a base plate and a filtration and recovery mechanism. The filtration and recovery mechanism is fixedly connected to the bottom of the base plate, and the filtration and recovery mechanism includes a collection tank fixedly connected to the bottom. A ceramic membrane fine filter layer is provided on the top of the collection tank, and a stainless steel wire mesh coarse filter layer is provided on the top of the ceramic membrane fine filter layer. An output pipe is fixedly connected to the bottom of the collection tank, and a circulating gear pump is fixedly connected to one end of the output pipe. An adjusting spraying mechanism is fixedly connected to one side of the circulating gear pump.

[0007] Preferably, the adjusting spraying mechanism includes a conveying pipe fixedly connected to one side of the circulating gear pump, and a support plate is provided on the outer surface of the conveying pipe. A lifting column is fixedly connected to the bottom of the support plate, and a diverter pipe is fixedly connected to one end of the conveying pipe. A conical throttling nozzle is fixedly connected to the bottom of the diverter pipe, and a control valve is provided on the outer surface of the conical throttling nozzle.

[0008] Preferably, a movable component is fixedly connected to the bottom of the lifting column, and a side plate is provided at the bottom of the movable component.

[0009] Preferably, a fluorinated release coating is fixedly connected to one side of the side plate, and a motor is provided on one side of the side plate.

[0010] Preferably, the outer surface of the output end of the motor is provided with a bearing, and the output end of the motor is fixedly connected to an adjustment frame.

[0011] Preferably, the inner surface of the adjustment frame is rotatably connected to a double-segment threaded rod, and the outer surface of the double-segment threaded rod is threadedly connected to a clamping plate.

[0012] Preferably, a rubber layer is fixedly connected to one side of the clamping plate, and a support frame is fixedly connected to the bottom of the side plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses a filtration and recovery mechanism to recover excess paint, avoiding paint waste and reducing the particulate impurity content of the recovered paint. This ensures that the coating surface of the shell remains smooth after the recovered paint adheres to the shell, preventing uneven paint distribution caused by impurities, improving paint reuse rate, reducing paint usage per batch, lowering production costs, reducing waste paint emissions, and reducing hazardous waste treatment costs. The clean paint after filtration reduces wear on the conical throttling nozzle, extends the nozzle replacement cycle, and improves the continuous operation efficiency of the equipment.

[0015] 2. This utility model improves the uniformity of the coating thickness by adjusting the setting of the spraying mechanism, avoiding the reduction of anti-yellowing ability caused by local excessive thinness, improving the utilization rate of paint, and realizing full life cycle management of paint in conjunction with the filtration and recovery mechanism. It improves the efficiency of small batch production, reduces human operation error, and the conveying pipe adopts a corrugated pipe structure. The stretching length can reach 1.5 times the original length. The outer layer is wrapped with a weather-resistant silicone sleeve, which can deform synchronously with the height adjustment of the lifting column to avoid bending and cracking of the pipe body. The silicone sleeve is resistant to paint corrosion and reduces paint penetration loss. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the filtration and recovery mechanism 2 and the adjusting spraying mechanism 3 of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the adjustment frame 9 of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the mobile component 4 of this utility model.

[0020] In the diagram: 1. Base plate; 2. Filtration and recovery mechanism; 201. Collection tank; 202. Ceramic membrane fine filter layer; 203. Stainless steel wire mesh coarse filter layer; 204. Output pipe; 205. Circulating gear pump; 3. Adjusting spraying mechanism; 301. Conveying pipe; 302. Support plate; 303. Lifting column; 304. Diverter pipe; 305. Conical throttling nozzle; 306. Control valve; 4. Moving component; 5. Side plate; 6. Fluorine-containing release coating; 7. Motor; 8. Bearing; 9. Adjusting frame; 10. Double-section threaded rod; 11. Clamping plate; 12. Rubber layer; 13. Support frame. Detailed Implementation

[0021] 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.

[0022] like Figures 1-2As shown, a plastic shell anti-yellowing spray painting device includes a base plate 1 and a filter recovery mechanism 2. The filter recovery mechanism 2 is fixedly connected to the bottom of the base plate 1, and the filter recovery mechanism 2 includes a collection tank 201 fixedly connected to the bottom. A ceramic membrane fine filter layer 202 is provided on the top of the collection tank 201, and a stainless steel wire mesh coarse filter layer 203 is provided on the top of the ceramic membrane fine filter layer 202. An output pipe 204 is fixedly connected to the bottom of the collection tank 201, and a circulating gear pump 205 is fixedly connected to one end of the output pipe 204. An adjusting spraying mechanism 3 is fixedly connected to one side of the circulating gear pump 205. A stainless steel wire mesh coarse filter layer 203 is horizontally placed at the inlet of the recycled paint material. It is made of stainless steel woven mesh and physically intercepts larger diameter paint skin and impurity particles through the mesh. The ceramic membrane fine filter layer 202, which is tightly attached below it, is made of zirconium oxide and uses a porous membrane structure to screen fine particles, thereby improving filtration efficiency. The output pipe 204 is a polished copper pipe that connects to the outlet of the collection tank 201. The circulating gear pump 205 is a cast iron pump body with gears that have been quenched and hardened. The pump body generates stable pressure and pressurizes and delivers the clean paint material to the regulating spraying mechanism 3, thereby improving the reuse rate of recycled paint material and reducing the coating particle defect rate.

[0023] like Figure 2 As shown, the adjusting spraying mechanism 3 includes a delivery pipe 301 fixedly connected to one side of the circulating gear pump 205, and a support plate 302 is provided on the outer surface of the delivery pipe 301. A lifting column 303 is fixedly connected to the bottom of the support plate 302, and a diversion pipe 304 is fixedly connected to one end of the delivery pipe 301. A conical throttling nozzle 305 is fixedly connected to the bottom of the diversion pipe 304, and a control valve 306 is provided on the outer surface of the conical throttling nozzle 305. The delivery pipe 301 is stretchable. One end is connected to the circulating gear pump 205. The lifting column 303 at the bottom of the support plate 302 is two-sectioned and has fastening bolts on its outer surface. Loosening the fastening bolts can adjust the height of the upper column to accommodate plastic shells of different heights. The other end of the conveying pipe 301 is connected to the diversion pipe 304. Multiple sets of conical throttling nozzles 305 are equidistantly arranged at the bottom of the pipe. During operation, the nozzles spray in a fan shape. The control valve 306 can shut off the idle conical throttling nozzles 305 individually, which is suitable for painting small shells, improving paint utilization and avoiding paint waste.

[0024] Furthermore, a movable component 4 is fixedly connected to the bottom of the lifting column 303, and a side plate 5 is provided at the bottom of the movable component 4. A fluorinated release coating 6 is fixedly connected to one side of the side plate 5, and a motor 7 is provided on one side of the side plate 5. The lead screw of the movable component 4 meshes with the nut seat at the bottom of the lifting column 303. Rotating the lead screw forward and backward drives the lifting column 303 to move horizontally along the guide rail inside the side plate 5. In conjunction with the spray range of the conical throttling nozzle 305, the plastic shell is sprayed without dead angles. The inner surface of the side plate 5 is coated with the fluorinated release coating 6, which has very little adhesion to polar paint. The paint naturally slides off, improving the cleaning efficiency of the side plate 5.

[0025] Furthermore, a bearing 8 is provided on the outer surface of the output end of the motor 7, and an adjustment frame 9 is fixedly connected to the output end of the motor 7. A double-segment threaded rod 10 is rotatably connected to the inner surface of the adjustment frame 9, and a clamping plate 11 is threadedly connected to the outer surface of the double-segment threaded rod 10. The motor 7 is a servo motor 7, and its output end passes through the side plate 5. The bearing 8 is sleeved on the outer surface to reduce rotational wear. By rotating the double-segment threaded rod 10, the spacing of the clamping plate 11 can be adjusted to adapt to different sized shells. The motor 7 drives the adjustment frame 9 to rotate, and with the help of the conical throttling nozzle 305, the coating on each surface of the shell is made uniform.

[0026] Furthermore, a rubber layer 12 is fixedly connected to one side of the clamping plate 11, and a support frame 13 is fixedly connected to the bottom of the side plate 5. The rubber layer 12 not only protects the plastic shell, but also adapts to plastic shells of different shapes. The rubber layer 12 on the inner side of the clamping plate 11 has a high elastic deformation rate, which can fit the curved surface of the irregular shell and avoid scratching the plastic shell during clamping. The support frame 13 at the bottom of the side plate 5 has high load-bearing capacity and reduces pressure by increasing the contact area with the ground, ensuring stable operation of the equipment.

[0027] Working Principle: When using this plastic shell anti-yellowing spray painting equipment, first check if the fluorinated release coating 6 on the inner surface of the side plate 5 is intact. Place the equipment on the support frame 13, rotate the double-segment threaded rod 10 to make the clamping plate 11 drive the rubber layer 12 to clamp the plastic shell. The output end of the motor 7 is connected to the adjustment frame 9 through the bearing 8 to ensure the shell is stable. The operator controls the spray painting equipment to spray the plastic shell. At the same time, the motor 7 drives the adjustment frame 9 to rotate the shell to achieve all-round spraying. Finally, the excess paint is filtered through the stainless steel wire mesh coarse filter layer 203 and the ceramic membrane fine filter layer 202 of the filtration and recovery mechanism 2, and enters the collection tank 201 at the bottom of the base plate 1 for recycling. The ring gear pump 205 delivers paint through the output pipe 204 to the delivery pipe 301 of the spraying mechanism 3. The height is adjusted by the lifting column 303 on the support plate 302. When it is necessary to move the conical throttling nozzle 305, the moving component 4 is rotated to move the lifting column 303. In other cases, the moving component 4 does not need to move. The diversion pipe 304 distributes the paint to the conical throttling nozzle 305. The control valve 306 adjusts the number of conical throttling nozzles 305 to continue spraying the plastic shell. After the spraying is completed, the plastic shell is removed, the motor 7 and the circulating gear pump 205 are turned off, and the painting work is completed. This is the working principle of the plastic shell anti-yellowing spraying equipment.

Claims

1. A plastic shell anti-yellowing spray painting device, comprising a base plate (1) and a filter and recovery mechanism (2), characterized in that, A filter recovery mechanism (2) is fixedly connected to the bottom of the base plate (1), and the filter recovery mechanism (2) includes a collection tank (201) fixedly connected to the bottom of the base plate. A ceramic membrane fine filter layer (202) is provided on the top of the collection tank (201), and a stainless steel wire mesh coarse filter layer (203) is provided on the ceramic membrane fine filter layer (202). An output pipe (204) is fixedly connected to the bottom of the collection tank (201), and a circulating gear pump (205) is fixedly connected to one end of the output pipe (204). An adjusting spraying mechanism (3) is fixedly connected to one side of the circulating gear pump (205).

2. The anti-yellowing spray painting equipment for plastic shells according to claim 1, characterized in that, The adjusting spraying mechanism (3) includes a delivery pipe (301) fixedly connected to one side of the circulating gear pump (205), and a support plate (302) is provided on the outer surface of the delivery pipe (301). A lifting column (303) is fixedly connected to the bottom of the support plate (302), and a diversion pipe (304) is fixedly connected to one end of the delivery pipe (301). A conical throttling nozzle (305) is fixedly connected to the bottom of the diversion pipe (304), and a control valve (306) is provided on the outer surface of the conical throttling nozzle (305).

3. The anti-yellowing spray painting equipment for plastic shells according to claim 2, characterized in that, The bottom of the lifting column (303) is fixedly connected to a moving component (4), and the bottom of the moving component (4) is provided with a side plate (5).

4. The anti-yellowing spray painting equipment for plastic shells according to claim 3, characterized in that, A fluorine-containing release coating (6) is fixedly connected to one side of the side plate (5), and a motor (7) is provided on one side of the side plate (5).

5. The anti-yellowing spray painting equipment for plastic shells according to claim 4, characterized in that, The output end of the motor (7) is provided with a bearing (8), and the output end of the motor (7) is fixedly connected with an adjustment frame (9).

6. The anti-yellowing spray painting equipment for plastic shells according to claim 5, characterized in that, The inner surface of the adjustment frame (9) is rotatably connected to a double-segment threaded rod (10), and the outer surface of the double-segment threaded rod (10) is threadedly connected to a clamping plate (11).

7. The anti-yellowing spray painting equipment for plastic shells according to claim 6, characterized in that, A rubber layer (12) is fixedly connected to one side of the clamp (11), and a support frame (13) is fixedly connected to the bottom of the side plate (5).

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