Brake disc paint spraying cover tool
By precisely matching the positioning pins and mounting holes and designing a flexible sealing strip, the problem of inaccurate spraying under the traditional center hole support method is solved, improving the production efficiency and product qualification rate of the brake disc painting process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUANGSHI DONG BEI CASTING CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing brake disc painting process, the traditional center hole support method limits the painting area, making it difficult to achieve precise painting. Furthermore, tooling misalignment can easily cause painting misalignment, affecting production efficiency and pass rate.
The brake disc painting masking fixture uses a precise fit between the positioning pin and the mounting hole. The locking fit between the positioning pin and the mounting hole prevents the fixture from shifting, and the flexible sealing strip prevents paint from seeping into the non-painted area. The depth of the positioning pin is adjustable to adapt to different clamping methods.
It achieves accurate spraying position, reduces scrap rate, and improves production efficiency and production line adaptability.
Smart Images

Figure CN224308683U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of auxiliary equipment for brake disc manufacturing, and more specifically, to a brake disc painting masking fixture. Background Technology
[0002] In the brake disc manufacturing process, the painting process has a significant impact on the product's appearance quality and rust resistance. In existing technologies, automated painting lines often use a center hole support method to fix the brake disc, which limits the painting area. This makes it difficult to achieve precise painting, especially for brake discs with specific dimensions or structural requirements.
[0003] Traditional masking fixtures rely on center hole positioning, but due to the obstruction of the support structure, they cannot effectively cover non-painting areas. They are prone to misalignment of the paint due to fixture misalignment, resulting in product rework or scrap, which seriously restricts production efficiency and pass rate.
[0004] Therefore, there is an urgent need for a high-efficiency, fast, and accurate brake disc painting masking fixture. The fixture can be customized according to the clamping method of different automatic painting lines to accurately spray paint, which will effectively improve the efficiency of the production line. Utility Model Content
[0005] In view of the above-mentioned technical problems in related technologies, this utility model proposes a brake disc painting masking fixture, which can overcome the above-mentioned deficiencies of the prior art.
[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:
[0007] A brake disc painting masking fixture;
[0008] The brake disc painting masking fixture includes a masking fixture body. The top surface of the masking fixture body is provided with at least two positioning pins, which match the mounting holes on the surface of the brake disc to be processed. The bottom surface of the masking fixture body is adapted to the area to be masked on the surface of the brake disc to be processed. The masking fixture body is positioned with the brake disc to be processed by inserting the positioning pins into the mounting holes, and the locking engagement between the positioning pins and the mounting holes prevents the masking fixture body from shifting during the spraying rotation process.
[0009] Furthermore, the top of the covering fixture body is provided with a loading and unloading grip for picking up and putting down.
[0010] Furthermore, the loading and unloading gripping part has an overall T-shaped structure or a U-shaped bent structure, and the surface of the loading and unloading gripping part is provided with anti-slip texture.
[0011] Furthermore, the end of the positioning pin is provided with a positioning head with a cylindrical structure, the positioning head is inserted into the mounting hole, and the diameter of the positioning head is slightly smaller than the diameter of the mounting hole.
[0012] Furthermore, the bottom edge of the covering fixture body is provided with a flexible sealing strip. The flexible sealing strip is arranged around the boundary of the disc surface spraying area of the brake disc to be processed, in order to prevent paint from seeping into the non-spraying area during the spraying process.
[0013] Furthermore, the positioning pin is connected to the cover fixture body by a thread, and the insertion depth of the positioning pin is adjustable.
[0014] The beneficial effects of this utility model are as follows: by replacing the traditional center hole positioning with the precise matching of the positioning pin and the mounting hole, tooling offset is effectively prevented and the spraying position is ensured to be accurate; the adjustable depth design of the positioning pin improves installation efficiency and adaptability; thus achieving the effects of precise masking, reducing scrap rate, improving production efficiency and production line adaptability. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a perspective view of the brake disc painting masking fixture in use according to an embodiment of the present utility model;
[0017] Figure 2 This is a front view of the brake disc painting masking fixture in use according to an embodiment of the present utility model;
[0018] Figure 3 This is a perspective view of the overall structure of a brake disc painting masking fixture according to an embodiment of the present utility model;
[0019] In the diagram: 1. Covering fixture body; 2. Positioning pin; 3. Positioning head; 4. Loading and unloading gripping part; 5. Brake disc to be processed; 6. Disc surface spraying area; 7. Mounting hole; 8. Center hole; 9. Bracket; 10. Workpiece support. Detailed Implementation
[0020] 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 skilled in the art are within the protection scope of the present utility model.
[0021] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.
[0022] like Figure 1-3 As shown in the embodiment of this utility model, a brake disc painting masking fixture includes a masking fixture body 1. The top surface of the masking fixture body 1 is provided with at least two positioning pins 2, which match the mounting holes 7 on the surface of the brake disc to be processed 5. The bottom surface of the masking fixture body 1 is adapted to the area to be masked on the surface of the brake disc to be processed 5. The masking fixture body 1 is positioned with the brake disc to be processed 5 by inserting the positioning pins 2 into the mounting holes 7, and the locking engagement between the positioning pins 2 and the mounting holes 7 prevents the masking fixture body 1 from shifting during the spraying rotation process.
[0023] According to an embodiment of the present invention, a brake disc painting masking fixture is provided on the top of the main body 1 of the masking fixture for picking up and putting down a loading and unloading gripping part 4.
[0024] According to an embodiment of the present invention, a brake disc painting masking fixture is provided. In a specific embodiment, the mounting and holding part 4 is generally T-shaped or U-shaped bent, and the surface of the mounting and holding part 4 is provided with anti-slip texture.
[0025] According to an embodiment of the present invention, a brake disc painting masking fixture is provided at the end of the positioning pin 2 with a cylindrical positioning head 3. The positioning head 3 is inserted into the mounting hole 7, and the diameter of the positioning head 3 is slightly smaller than the diameter of the mounting hole 7.
[0026] According to an embodiment of the present invention, a brake disc painting masking fixture is provided with a flexible sealing strip on the bottom edge of the body 1 of the masking fixture. The flexible sealing strip is arranged around the boundary of the disc surface painting area 6 of the brake disc workpiece 5 to be processed, in order to prevent paint from seeping into the non-painting area during the painting process.
[0027] According to an embodiment of the present invention, a brake disc painting masking fixture is provided. In a specific embodiment, the positioning pin 2 is connected to the masking fixture body 1 by a thread, and the insertion depth of the positioning pin 2 is adjustable.
[0028] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.
[0029] In practical use, the brake disc painting masking fixture according to this utility model includes a masking fixture body 1, on which a positioning pin 2 and a loading and unloading gripping part 4 are provided. The end of the positioning pin 2 is provided with a positioning head 3, and the positioning head 3 at the end of the positioning pin 2 matches the size of the mounting hole 7 on the brake disc workpiece 5 to be processed.
[0030] 1. Place the brake disc workpiece 5, to be processed, on the bracket 9;
[0031] 2. The worker holds the loading and unloading gripping part 4 on the cover fixture body 1 to cover the brake disc workpiece 5 to be processed. The two positioning pins 2 on the cover fixture body 1 are randomly placed at the mounting hole 7 position of the brake disc workpiece 5 to be processed.
[0032] 3. The cover fixture body 1 and the brake disc workpiece 5 are put into the automatic spraying turntable together;
[0033] 4. After the spraying is completed, the worker takes out the masking fixture body 1 by hand from the loading and unloading grip 4 and enters the next brake disc to be processed part 5 spraying stage.
[0034] In summary, by utilizing the above-mentioned technical solution of this utility model, the precise matching of the positioning pin and the mounting hole replaces the traditional center hole positioning, effectively preventing tooling offset and ensuring accurate spraying position; the adjustable depth design of the positioning pin improves installation efficiency and adaptability; thereby achieving the effects of precise masking, reducing scrap rate, improving production efficiency and production line adaptability.
[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A brake disc paint spraying cover tool, characterized in that, The application relates to a covering tool body (1) which is provided with at least two positioning pins (2) on the top surface of the covering tool body (1), the positioning pins (2) being matched with mounting holes (7) on the disc surface of a brake disc to-be-processed piece (5); the bottom surface of the covering tool body (1) is adapted to the area to be covered on the disc surface of the brake disc to-be-processed piece (5); the covering tool body (1) is positioned with the brake disc to-be-processed piece (5) by inserting the positioning pins (2) into the mounting holes (7), and the locking cooperation between the positioning pins (2) and the mounting holes (7) prevents the covering tool body (1) from deviating during the spraying rotation.
2. The paint spraying cover tool for brake disc according to claim 1, characterized in that, The top of the covering tool body (1) is provided with a loading and taking holding part (4) for taking and placing.
3. The paint spraying cover tool for brake disc according to claim 2, characterized in that, The loading and taking holding part (4) is in T-shaped structure or U-shaped bending structure as a whole, and the surface of the loading and taking holding part (4) is provided with anti-skid lines.
4. The paint spraying cover tool for brake disc according to claim 1, characterized in that, The end of the positioning pin (2) is provided with a positioning head (3) in cylindrical structure, the positioning head (3) is inserted into the mounting hole (7), and the diameter of the positioning head (3) is slightly smaller than the hole diameter of the mounting hole (7).
5. The paint spraying cover tool for brake disc according to claim 1, characterized in that, The bottom edge of the covering tool body (1) is provided with a flexible sealing strip which is arranged around the boundary of the disc surface spraying area (6) of the brake disc to-be-processed piece (5) and is used for preventing paint from penetrating into the non-spraying area during the spraying process.
6. The paint spraying cover tool for brake disc according to claim 1, characterized in that, The positioning pin (2) is connected with the covering tool body (1) through screw threads, and the insertion depth of the positioning pin (2) can be adjusted.