In-mold paint spraying guard
The problem of paint mist obscuring the observation window in the in-mold paint spraying device has been solved by using a transparent protective film and an electric motor-driven roller structure. This enables clear observation of the observation window and convenient cleaning of the protective cover, improving the visibility of the painting operation and maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI BILOR NEW MATERIALS TECH CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-06-05
AI Technical Summary
Existing protective devices for in-mold painting may cause paint mist to splatter onto the viewing window during the painting process, resulting in blurred vision and affecting the painting operation. Furthermore, the integrated protective cover is cumbersome to clean.
Employing a transparent protective film and a motor-driven active and passive roller structure, the protective film can cover the observation window during painting. The motor drives the active roller to pull out the clean film and rewind the contaminated film. Combined with the movable cover design, it is easy to clean and replace the protective film.
It effectively prevents paint mist from contaminating the observation window, ensuring clear visibility of the painting operation and simplifying the cleaning and maintenance process of the protective cover.
Smart Images

Figure CN224321629U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of in-mold painting, specifically relating to a protective device for in-mold paint spraying. Background Technology
[0002] In-mold coating protection devices are critical equipment used to protect operators, equipment, and the environment from hazards such as paint mist and solvent evaporation during the coating process. Their core functions include isolating the coating area, collecting excess paint mist, preventing dust dispersion, and ensuring process stability.
[0003] Existing in-mold paint spraying protective devices typically involve fixing the mold to be painted onto a fixture, closing the protective door, and then sending the paint spraying device into the protective cover to perform the painting operation. During the painting process, excess paint mist may splash onto the observation window, causing it to become blurry and making it difficult to observe the inside of the protective cover. This may affect the painting operation of the mold. In addition, the common protective cover is a one-piece structure, which requires cleaning after long-term use. Cleaning one-piece protective covers is quite cumbersome. Utility Model Content
[0004] To overcome the problem that paint mist may blur the observation port and affect the painting operation when using in-mold paint spraying protective devices, a new type of in-mold paint spraying protective device is proposed.
[0005] The technical solution of this utility model is as follows: a protective device for in-mold paint spraying, including a main shield and a base. A first groove is opened through the outer wall of the main shield. A frame is fixed to the inner wall of the first groove. An observation window is fixed inside the frame. Symmetrical support blocks are fixed to the upper and lower edges of the frame. A driven roller is rotatably installed between the upper and lower support blocks on the left side. An active roller is rotatably installed between the upper and lower support blocks on the right side. A symmetrical second groove is opened through the front edge of the frame. A protective film is provided at the rear end of the observation window. One end of the protective film passes through the right second groove and is fixed to the outer wall of the active roller. The other end of the protective film passes through the left second groove and is rolled up to the outer wall of the driven roller. A motor is installed at the front end of the base. The output end of the motor passes through the lower support block on the right side and is connected to the rotating shaft of the active roller.
[0006] Furthermore, the rear end of the main shield is fixedly connected to a first hinge block that is symmetrically arranged on the left and right and distributed vertically, the rear end of the main shield is provided with a movable cover that is symmetrically arranged on the left and right, and the front end of the movable cover is fixedly connected to a second hinge block that is distributed vertically.
[0007] Furthermore, the first hinge block and the second hinge block are hinged together by a rotating pin. The outer wall of the rotating pin is provided with a second slot, and a second spring pin is fixedly connected in the second slot.
[0008] Furthermore, a clamp is fixed to the center of the upper end of the base, and a collection groove is opened around the upper end of the base.
[0009] Furthermore, a fixing groove is provided at the upper end of the base, which is located in front of the collection groove. A fixing block is fixedly connected to the lower end of the main cover, and the fixing block is interference-fitted with the fixing groove.
[0010] Furthermore, the lower end of the movable cover is provided with a first slot, and a first spring pin is fixedly connected in the first slot. The upper end of the base is provided with a limiting hole, which is located on the rear side of the collection tank and is adapted to the first spring pin.
[0011] Furthermore, the base has through slots at both ends, which are connected to the collection slots, and soft plugs are installed inside the through slots.
[0012] The beneficial effects of this utility model are as follows: The transparent protective film can protect the observation window, preventing paint mist or spray paint from splashing onto it. The output of the motor can drive the active roller to rotate, pulling the protective film to the right. This allows the driven roller to release the clean protective film to the front end of the observation window, while the active roller rewinds the contaminated protective film. Compared with existing in-mold paint spraying protective devices, the added protective film, driven roller, and active roller structure can protect the observation window, preventing paint mist from contaminating it and affecting the observation of the inside of the protective cover. Furthermore, when the protective film is contaminated, the contaminated section can be rewound, and the clean protective film can be pulled to the rear end of the observation window for easy observation of the inside of the protective cover. Attached Figure Description
[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;
[0014] Figure 2 The diagram shown is a three-dimensional structural disassembly diagram of this utility model;
[0015] Figure 3 The diagram shown is a three-dimensional structural breakdown of the frame, support block, driven roller, driving roller, motor, observation window and protective film of this utility model.
[0016] Figure 4 The diagram shown is a three-dimensional disassembled view of the main protective cover and the movable cover of this utility model.
[0017] Figure 5 The diagram shown is a three-dimensional disassembled view of the rotating pin and the second spring pin of this utility model.
[0018] Figure 6 The diagram shown is a three-dimensional disassembled view of the base, clamp, first spring pin, and soft plug of this utility model.
[0019] Explanation of reference numerals in the attached drawings: 1. Main protective cover; 2. Base; 3. First groove; 4. Movable cover; 5. Clamp; 6. Frame; 7. Second groove; 8. Observation window; 9. Support block; 10. Driven roller; 11. Driven roller; 12. Motor; 13. Protective film; 14. First hinge block; 15. Second hinge block; 16. First slot; 17. Rotating pin; 18. Second slot; 19. Second spring pin; 20. First spring pin; 21. Limiting hole; 22. Collection groove; 23. Through groove; 24. Soft plug; 25. Fixing groove; 26. Fixing block. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Please see Figures 1-6 This utility model provides an embodiment of an in-mold paint spraying protective device, including a main shield 1 and a base 2. The outer wall of the main shield 1 is provided with a first groove 3. The inner wall of the first groove 3 is fixedly connected to a frame 6. An observation window 8 is fixedly connected inside the frame 6. The upper and lower edges of the frame 6 are fixedly connected with symmetrical support blocks 9. A driven roller 10 is rotatably installed between the upper and lower support blocks 9 on the left side. A driving roller 11 is rotatably installed between the upper and lower support blocks 9 on the right side. The front edge of the frame 6 is provided with a symmetrical second groove 7. A protective film 13 is provided at the rear end of the observation window 8. One end of the protective film 13 passes through the right second groove 7 and is fixed to the outer wall of the driving roller 11. The other end of the protective film 13 passes through the left second groove 7 and is wound up to the outer wall of the driven roller 10. A motor 12 is installed at the front end of the base 2. The output end of the motor 12 passes through the lower support block 9 on the right side and is connected to the rotating shaft of the driving roller 11.
[0022] The transparent protective film 13 protects the observation window 8, preventing paint mist or spray paint from splashing onto it. The output of the motor 12 drives the drive roller 11 to rotate, which pulls the protective film 13 to the right, allowing the driven roller 10 to release the clean protective film 13 to the front end of the observation window 8. The drive roller 11 then rolls up the contaminated protective film 13, ensuring the cleanliness of the observation window 8 during painting and allowing observation of the painting process.
[0023] Please see Figures 4-5In this embodiment, the rear end of the main protective cover 1 is fixedly connected to a first hinge block 14 that is symmetrically arranged on the left and right and distributed vertically. The rear end of the main protective cover 1 is provided with a movable cover 4 that is symmetrically arranged on the left and right. The front end of the movable cover 4 is fixedly connected to a second hinge block 15 that is distributed vertically. In use, the main protective cover 1 and the movable cover 4 can protect the paint spraying mold and prevent paint mist from harming the workers. The first hinge block 14 and the second hinge block 15 are hinged by a rotating pin 17. The outer wall of the rotating pin 17 is provided with a second slot 18. A second spring pin 19 is fixedly connected in the second slot 18. In use, the main protective cover 1 and the movable cover 4 can be connected by rotating pin 17. Pressing the second spring pin 19 can pull out the rotating pin 17, which facilitates the disassembly and cleaning of the movable cover 4.
[0024] Please see Figures 4-6 In this embodiment, a clamp 5 is fixedly connected to the upper center of the base 2, and a collection groove 22 is opened around the upper end of the base 2. In use, the clamp 5 can hold the paint spraying mold to facilitate painting. The collection groove 22 can collect the sprayed paint. A fixing groove 25 is opened at the upper end of the base 2. The fixing groove 25 is located in front of the collection groove 22. A fixing block 26 is fixedly connected to the lower end of the main cover 1. The fixing block 26 and the fixing groove 25 are interference fit. In use, the main cover 1 can be fixed by the fixing groove 25 and the fixing block 26. The main cover 1 can be disassembled to facilitate cleaning of the inner wall of the main cover 1.
[0025] Please see Figure 6 In this embodiment, the lower end of the movable cover 4 is provided with a first slot 16, and a first spring pin 20 is fixedly connected in the first slot 16. The upper end of the base 2 is provided with a limiting hole 21, which is located on the rear side of the collection tank 22. The limiting hole 21 is adapted to the first spring pin 20. In use, the opening and closing of the movable cover 4 can be limited and fixed by the first spring pin 20 in conjunction with the limiting hole 21, so as to ensure the stability of the movable cover 4 during painting. The left and right ends of the base 2 are provided with through slots 23, which are connected to the collection tank 22. A soft plug 24 is provided in the through slot 23. In use, the collection tank 22 can be easily cleaned through the through slot 23, and the soft plug 24 can prevent the paint in the collection tank 22 from flowing out.
[0026] When working, first, place the mold to be painted on the upper end of the clamp 5, use the clamp 5 to fix the mold, and flip and close the movable cover 4 so that the first spring pin 20 fits into the limiting hole 21 to complete the installation of the mold. Next, send the painting device into the cover to perform the painting operation on the mold. The motor 12 can be started. The output end of the motor 12 drives the active roller 11 to rotate. Wait for the active roller 11 to wind up a section of the contaminated protective film 13, and then turn off the motor 12. Finally, after the painting is completed, open the movable cover 4 and the mold can be taken out.
[0027] After the work is completed, firstly, press the second spring pin 19 and pull out the rotating pin 17 to remove the movable cover 4. Then, pull out the main cover 1 and clean the movable cover 4 and the main cover 1. Next, pull out the soft plug 24 to clean the collection tank 22 and the through tank 23 and recover the paint. Then, remove the contaminated protective film 13 and fix one end of the new protective film 13 to the outer wall of the driven roller 10. Insert the other end of the protective film 13 from the front of the left second tank 7 and out from the rear of the right second tank 7 and fix it to the outer wall of the driving roller 11. Finally, rotate the driven roller 10 to wind up and tighten the protective film 13.
[0028] Through the above steps, the transparent protective film 13 can protect the observation window 8, preventing paint mist or paint splashes from hitting the observation window 8. The output end of the motor 12 can drive the active roller 11 to rotate, which can pull the protective film 13 to the right, so that the driven roller 10 releases the clean protective film 13 to the front end of the observation window 8, and the active roller 11 rolls up the contaminated protective film 13. This solves the problem that paint mist may cause the observation window to become blurry and affect the painting operation when the protective device for in-mold paint spraying is in use.
Claims
1. A protective device for in-mold paint spraying, comprising a main protective cover (1) and a base (2), characterized in that: The outer wall of the main protective cover (1) is provided with a first groove (3), the inner wall of the first groove (3) is fixed with a frame (6), the frame (6) is fixed with an observation window (8), the upper and lower edges of the frame (6) are fixed with symmetrical support blocks (9), a driven roller (10) is rotatably installed between the upper and lower support blocks (9) on the left side, and a driving roller (11) is rotatably installed between the upper and lower support blocks (9) on the right side. The front edge of the frame (6) is provided with a left The second groove (7) is symmetrical on the right. A protective film (13) is provided at the rear end of the observation window (8). One end of the protective film (13) passes through the second groove (7) on the right and is fixed to the outer wall of the drive roller (11). The other end of the protective film (13) passes through the second groove (7) on the left and is wound up on the outer wall of the driven roller (10). A motor (12) is installed at the front end of the base (2). The output end of the motor (12) passes through the lower support block (9) located on the right and is connected to the rotating shaft of the drive roller (11).
2. The protective device for in-mold paint spraying according to claim 1, characterized in that: The rear end of the main shield (1) is fixed with a first hinge block (14) that is symmetrical on the left and right and distributed vertically. The rear end of the main shield (1) is provided with a movable cover (4) that is symmetrical on the left and right. The front end of the movable cover (4) is fixed with a second hinge block (15) that is distributed vertically.
3. The protective device for in-mold paint spraying according to claim 2, characterized in that: The first hinge block (14) and the second hinge block (15) are hinged together by a rotating pin (17). The outer wall of the rotating pin (17) is provided with a second slot (18), and a second spring pin (19) is fixedly connected in the second slot (18).
4. The protective device for in-mold paint spraying according to claim 3, characterized in that: A clamp (5) is fixed to the center of the upper end of the base (2), and a collection groove (22) is opened around the upper end of the base (2).
5. The protective device for in-mold paint spraying according to claim 4, characterized in that: The upper end of the base (2) is provided with a fixing groove (25), which is located in front of the collection groove (22). The lower end of the main cover (1) is fixed with a fixing block (26), which is interference-fitted with the fixing groove (25).
6. The protective device for in-mold paint spraying according to claim 5, characterized in that: The lower end of the active cover (4) is provided with a first slot (16), and a first spring pin (20) is fixedly connected in the first slot (16). The upper end of the base (2) is provided with a limiting hole (21), which is located on the rear side of the collection groove (22). The limiting hole (21) is adapted to the first spring pin (20).
7. The protective device for in-mold paint spraying according to claim 6, characterized in that: The base (2) has through slots (23) at both ends, which are connected to the collection slot (22). A soft plug (24) is provided in the through slot (23).