Shielding tool for paint spraying of automobile trim panel

Abstract

The utility model relates to the technical field of automobile accessory processing, and discloses a shielding tool for paint spraying of an automobile trim panel, which comprises a paint spraying gun and a shielding box, one side of the outer wall of the paint spraying gun is sleeved with an external thread sleeve, and one side of the shielding box is provided with an internal thread sleeve in a penetrating manner. The side edge extrudes and abuts against a clamping plate, a first limiting plate is driven to slide and compress a first spring, stable clamping is formed, installation is completed by touching a swing rod, when a plane decoration plate is sprayed, a rubber pad is flexibly attached and sealed, paint is accurately sprayed through a hollowed-out area of a shape plate, so that logo patterns are clear and regular, and when the shape plate needs to be replaced, the top end of the swing rod is held by one hand to apply force, and the shape plate can be replaced. The paper sticking device swings by taking the rotating rod as a shaft, the end part is ejected out of one side of the shape plate according to the lever principle and is pulled out conveniently, tools are not needed in the whole process, the operation is smooth, the tool switching time is greatly shortened, the production efficiency is remarkably improved, and the problem of low paper sticking efficiency in a traditional mode is thoroughly solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically a masking fixture for automotive trim panel painting. Background Technology

[0002] Automotive trim panel painting is a crucial step in shaping the interior's texture and brand image, directly impacting the overall visual appeal and quality of the vehicle. During the painting process, without effective masking, paint can easily splatter onto non-target areas, resulting in mixed colors and blurred patterns on the trim panel surface. This not only damages the aesthetics but can also reduce the product's pass rate. Especially since brand logos and decorative patterns on the trim panels are important carriers of brand image, the precision of their painting directly affects brand recognition and user experience. Even minor paint leaks or painting deviations can cause rough logo edges and distorted patterns, weakening the brand's visual communication effect. Using masking tools allows for precise coverage of non-painted areas, leaving only the target painting surface exposed. This ensures a smooth, clear paint surface over large areas while providing reliable protection for intricate patterns such as logos, allowing the brand identity to be presented in a refined and clear manner, effectively enhancing the quality of the automotive interior and brand value.

[0003] In the current logo painting process, workers manually apply masking stickers pre-cut to the shape of the logo onto the car trim surface, leaving only the logo painting area exposed. This operation relies heavily on the worker's experience and skill, and the stickers are prone to air bubbles and wrinkles, causing paint to seep into the non-painted areas, resulting in problems such as blurred logo edges and rough edges. Furthermore, it is difficult to accurately control the sticker placement, and different workers have different operating methods, making it easy for the logo position to shift. In addition, the stickers need to be recut every time the car model or logo style is changed, which is inefficient and has high labor costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a masking fixture for automotive trim panel painting, which has the advantages of high efficiency, leak prevention, and quick switching. It solves the problems of poor precision, low efficiency, and unstable quality in manual sticker masking of logos in the prior art.

[0005] To achieve the aforementioned goals of efficient adaptation, leak prevention, and rapid switching, this utility model provides the following technical solution: It includes a paint spray gun and a masking box. One side of the paint spray gun's outer wall is fitted with an externally threaded sleeve. One side of the masking box is permeated and fitted with an internally threaded sleeve, which is threadedly connected to the externally threaded sleeve. A slot is permeated through the middle of one side of the masking box's inner cavity. Extrusion grooves are formed on the upper and lower parts of the slot's inner wall. A spring is fixedly connected to one side of the inner cavity of one extrusion groove. A limiting plate is fixedly connected to the side of the spring away from the extrusion groove, and the limiting plate slides within the extrusion groove. A contact clamping plate is fixedly connected to the side of the limiting plate away from the spring through the slot. A swing rod is formed on the side of the masking box near the slot. A rotating rod is rotatably connected to the inner cavity of the swing rod. A swing rod is fixedly connected to the outer wall of the rotating rod, and the swing rod swings within the swing groove and slot.

[0006] As a further improvement of this utility model: a shape plate is slidably connected inside the slot, and the upper and lower sides of the middle part of the shape plate abut against the clamping plate, and the side of the swing rod swinging inside the slot abuts against the shape plate.

[0007] As a further embodiment of this utility model: multiple sets of sleeves are connected through and fixedly connected to the interior of the shielding box away from the internal threaded sleeve. A spring is fixedly connected to one side of the inner cavity of one set of sleeves. A limiting plate is slidably connected inside the sleeve, and one side of the limiting plate is fixedly connected to the sleeve. A connecting rod is fixedly connected to the sleeve and the shielding box through one side of the limiting plate.

[0008] As a further embodiment of this utility model: a connecting ball is fixedly connected to the side of the connecting rod away from the second limiting plate, a connecting block is rotatably connected to the outer wall of the connecting ball, and a rubber pad is installed on the side of the connecting block away from the connecting ball.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. In this utility model, when the logo-engraved shape plate is inserted into the slot, the side squeezes against the clamping plate, causing the limiting plate to slide and compress the spring, forming a stable clamp. The installation is completed when the swing rod is touched. When the flat decorative panel is sprayed, the rubber pad flexibly fits and seals, and the paint is accurately sprayed through the hollow area of ​​the shape plate, preventing leakage and making the logo pattern clear and neat. When the shape plate needs to be replaced, one hand holds the top of the swing rod and applies force, swinging the rod as the axis. The end uses the lever principle to push out one side of the shape plate, and then pulls it out. No tools are required throughout the process, the operation is smooth, the tooling changeover time is greatly shortened, the production efficiency is significantly improved, and the problem of low efficiency of the traditional sticker method is completely solved.

[0011] 2. In this utility model, when the rubber pad contacts the curved decorative panel and moves upward under the reaction force, the connecting block drives the connecting ball and the connecting rod to rise synchronously, pushing the limiting plate two to slide smoothly in the sleeve. The spring two then compresses and stores energy. With the design that the middle rubber pad is given priority to receive force, the other rubber pads respond in sequence according to the curved surface contour. Combined with the universal bending characteristics of the connecting ball, the connecting block is driven to dynamically adjust, so that the rubber pad automatically forms a ring arc array that closely fits the complex curved surface. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the external threaded sleeve and the internal threaded sleeve of this utility model;

[0014] Figure 3 This is a cross-sectional view of the shielding box of this utility model;

[0015] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0016] Figure 5 This is a schematic diagram of the inside of the sleeve of this utility model.

[0017] In the diagram: 1. Paint gun; 2. External threaded sleeve; 3. Masking box; 4. Internal threaded sleeve; 5. Slot; 6. Extrusion groove; 7. Spring 1; 8. Limiting plate 1; 9. Abutting clamping plate; 10. Swinging groove; 11. Rotating rod; 12. Swinging rod; 13. Sleeve; 14. Spring 2; 15. Limiting plate 2; 16. Connecting rod; 17. Connecting ball; 18. Connecting block; 19. Rubber pad; 20. Shape plate. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-5In this embodiment of the present invention, a masking fixture for painting automotive trim panels includes a paint gun 1 and a masking box 3. An externally threaded sleeve 2 is fitted onto one side of the outer wall of the paint gun 1, and an internally threaded sleeve 4 is threaded through and installed on one side of the masking box 3. The internally threaded sleeve 4 is threadedly connected to the externally threaded sleeve 2. When painting the logo pattern on the automotive trim panel, the internally threaded sleeve 4 and the externally threaded sleeve 2 on one side of the masking box 3 are first screwed tightly to secure them, thereby accurately positioning the nozzle of the paint gun 1 within the working area inside the masking box 3. The inner cavity of the masking box 3 is penetrated through the center of one side. A slot 5 is provided. A shape plate 20 with a specific logo or pattern is aligned with the slot 5 and inserted. The upper and lower parts of the inner wall of the slot 5 are provided with extrusion grooves 6. A spring 7 is fixedly connected to one side of the inner cavity of one extrusion groove 6. A limit plate 8 is fixedly connected to the side of the spring 7 away from the extrusion groove 6 and slides in the extrusion groove 6. The side of the limit plate 8 away from the spring 7 passes through the slot 5 and is fixedly connected to an abutment clamping plate 9. During insertion, the side of the shape plate 20 presses against the abutment clamping plates 9 on the upper and lower sides of the inner cavity of the slot 5, causing the abutment clamping plates 9 to move against the limit plate 6. Plate 8 slides synchronously towards the extrusion groove 6. During this process, spring 7 is compressed, forming an elastic clamping force, thereby clamping the shaped plate 20. When the shaped plate 20 slides to contact and abut against the swing rod 12, it stops moving and the installation is completed. The shielding box 3 has a swing rod 12 on the side near the slot 5. The inner cavity of the swing rod 12 is rotatably connected to the rotating rod 11. The outer wall of the rotating rod 11 is fixedly connected to the swing rod 12, and the swing rod 12 swings within the swing groove 10 and the slot 5. The shaped plate 20 is slidably connected inside the slot 5, and the upper and lower sides of the middle of the shaped plate 20 are... All of them are in contact with the clamping plate 9. The side of the swing rod 12 swinging in the slot 5 is in contact with the shape plate 20. When the shape plate 20 needs to be replaced, the operator only needs to hold the top of the swing rod 12 with one hand. After applying force, the swing rod 12 swings smoothly in the range of motion formed by the swing groove 10 and the slot 5 with the rotating rod 11 as the axis. During the swing, the end of the swing rod 12 accurately acts on the edge of the shape plate 20 and uses the lever principle to push one side of it out of the slot 5. At this time, the operator can hold the end of the shape plate 20 that has been separated from the slot 5 and pull out the whole shape plate 20.

[0020] The shielding box 3, located away from the internal threaded sleeve 4, has multiple sets of sleeves 13 that are connected through and fixedly connected inside. A spring 14 is fixedly connected to one side of the inner cavity of one set of sleeves 13. A limiting plate 15 is slidably connected inside the sleeve 13, and one side of the limiting plate 15 is fixedly connected to the sleeve 13. For the spraying operation of the curved decorative panel, when the rubber pad 19 moves upward due to the reaction force of the curved decorative panel, the connecting block 18 drives the connecting ball 17 and the connecting rod 16 to rise synchronously. The connecting rod 16 pushes the limiting plate 15 to slide smoothly inside the sleeve 13, and the spring 14 is compressed. Since the rubber pad 19, located in the middle position, is the first to be stressed. As the rubber pads 19 move upward, they rise sequentially under the action of the arc contour. One side of the limiting plate 15 passes through the sleeve 13 and the shielding box 3 and is fixedly connected to the connecting rod 16. The connecting rod 16 is fixedly connected to the connecting ball 17 on the side away from the limiting plate 15. The outer wall of the connecting ball 17 is fitted with and rotatably connected to the connecting block 18. The connecting block 18 is equipped with rubber pads 19 on the side away from the connecting ball 17. Through the bending characteristics of the connecting ball 17, the connecting block 18 is driven to flexibly adjust its position, so that multiple rubber pads 19 adaptively form an annular arc array, tightly wrapping the arc-shaped decorative panel, thereby achieving high-precision spraying of complex curved logos.

[0021] The working principle of this utility model is as follows: When the logo pattern of the car trim panel is sprayed, the inner threaded sleeve 4 and the outer threaded sleeve 2 on one side of the masking box 3 are first screwed together to fix them, so that the nozzle of the paint gun 1 is accurately positioned in the working area inside the masking box 3. Then, the shape plate 20 with a specific logo or pattern is aligned with the slot 5 and inserted. During the insertion process, the side of the shape plate 20 presses the upper and lower sides of the inner cavity of the slot 5 to the abutment clamping plate 9, which drives the abutment clamping plate 9 and the limiting plate 8 to slide synchronously towards the extrusion groove 6. During this process, the spring 7 is compressed to form an elastic clamping force, thereby clamping the shape plate 20. When the shape plate 20 slides to contact and abut against the swing rod 12, it stops moving and the installation is completed.

[0022] When spraying paint on a flat car trim panel, the masking box 3 is smoothly attached to the surface of the trim panel. At this time, the rubber pad 19, with its flexible properties, tightly adheres to and seals the edge of the trim panel, forming an effective masking protection. After starting the paint gun 1, the sprayed paint passes through the hollow area of ​​the shape plate 20 and is accurately sprayed onto the surface of the trim panel, ultimately forming a clear and regular logo pattern.

[0023] For the spraying operation of curved decorative panels, when the rubber pad 19 moves upward under the reaction force of the curved decorative panel, the connecting block 18 drives the connecting ball 17 and the connecting rod 16 to rise synchronously. The connecting rod 16 pushes the limiting plate 15 to slide smoothly in the sleeve 13, and the spring 14 is compressed. Since the rubber pad 19 located in the middle position is the first to be forced upward, the other rubber pads 19 are lifted in sequence under the action of the curved contour. Through the bending characteristics of the connecting ball 17, the connecting block 18 is driven to flexibly adjust its position, so that multiple rubber pads 19 adaptively form a ring arc array, tightly wrapping the curved decorative panel, thereby achieving high-precision spraying of complex curved logos. In addition, the shape plate 20 adopts a reusable design concept. By quickly changing the shape plate 20 with different patterns, it can easily adapt to diverse logo spraying needs, completely solving the problem of low efficiency of traditional manual sticker masking methods.

[0024] When the shape plate 20 needs to be replaced, the operator only needs to hold the top of the swing rod 12 with one hand. After applying force, the swing rod 12 swings smoothly within the movable range formed by the swing groove 10 and the slot 5, with the rotating rod 11 as the axis. During the swing, the end of the swing rod 12 precisely acts on the edge of the shape plate 20, and uses the lever principle to push one side of it out of the slot 5. At this time, the operator can hold the end of the shape plate 20 that has been removed from the slot 5 and pull out the entire shape plate 20. The entire replacement process does not require additional tools, the operation is smooth and continuous, greatly shortens the tooling changeover time, and significantly improves production efficiency.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A masking tool for painting an automobile panel, comprising a paint spraying gun (1) and a masking box (3), characterized in that: A threaded sleeve (2) is fitted on one side of the outer wall of the paint spray gun (1). An internally threaded sleeve (4) is installed through one side of the shielding box (3), and the internally threaded sleeve (4) is threadedly connected to the externally threaded sleeve (2). A slot (5) is provided through the middle of one side of the inner cavity of the shielding box (3). Extrusion grooves (6) are provided on the upper and lower parts of the inner wall of the slot (5). A spring (7) is fixedly connected to one side of the inner cavity of one extrusion groove (6). A spring (7) is fixedly connected to the side of the spring (7) away from the extrusion groove (6). Limiting plate 1 (8) slides in the extrusion groove (6). The side of the limiting plate 1 (8) away from the spring 1 (7) passes through the slot (5) and is fixedly connected to the abutment clamping plate (9). The shielding box (3) is provided with a swing rod (12) on the side near the slot (5). The inner cavity of the swing rod (12) is rotatably connected to a rotating rod (11). The outer wall of the rotating rod (11) is fixedly connected to the swing rod (12), and the swing rod (12) swings in the swing groove (10) and the slot (5).

2. The masking tool for painting the automobile trim panel according to claim 1, wherein: The slot (5) is slidably connected to a shape plate (20), and the upper and lower sides of the middle part of the shape plate (20) are in contact with the clamping plate (9). The swing rod (12) is in contact with the shape plate (20) on one side when it swings in the slot (5).

3. The masking tool for painting the automobile trim panel according to claim 1, wherein: The shielding box (3) is connected to multiple sets of sleeves (13) through and fixedly connected to the interior of the internal threaded sleeve (4). A spring (14) is fixedly connected to one side of the inner cavity of one set of sleeves (13). A limiting plate (15) is slidably connected inside the sleeve (13), and one side of the limiting plate (15) is fixedly connected to the sleeve (13). One side of the limiting plate (15) passes through the sleeve (13) and the shielding box (3) and is fixedly connected to a connecting rod (16).

4. The masking tool for painting the automobile trim panel according to claim 3, wherein: A connecting ball (17) is fixedly connected to the side of the connecting rod (16) away from the limiting plate (15). A connecting block (18) is sleeved and rotatably connected to the outer wall of the connecting ball (17). A rubber pad (19) is installed on the side of the connecting block (18) away from the connecting ball (17).

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