A plastic jig for adapting powder spraying of a die casting

Abstract

The utility model discloses a kind of plastic jigs suitable for die casting piece powder spraying, the plastic jig includes: base, for supporting workpiece to be sprayed;Upper cover, cooperate with the base, for at least partly covering the workpiece to be sprayed;Wherein, the base and the upper cover are made of conductive plastic material.Solve the existing spraying jig is mostly sheet metal material, prone to workpiece damage and increase related equipment load and other problems.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for magnesium alloy powder coating, specifically, to a plastic jig adapted for powder coating of die-cast parts. Background Technology

[0002] Magnesium alloys are widely used in 3C products due to their lightweight and high strength properties, but their surfaces require powder coating for corrosion protection and aesthetics. Current powder coating processes rely on sheet metal fixtures (mostly stainless steel) for workpiece masking, which presents the following technical challenges: 1. High risk of workpiece damage: Magnesium alloys have only 60% the hardness of aluminum alloys, making the metal contact surfaces of sheet metal fixtures prone to scratches, impacts, and deformation. 2. Cost and maintenance issues: Sheet metal fixtures are difficult to process and heavy (each set weighs ≥5kg), increasing the load on automated equipment; furthermore, powder easily accumulates on the sheet metal surface, requiring regular cleaning and resulting in high maintenance costs.

[0003] Therefore, providing a lightweight powder coating fixture that can effectively mask the coated parts and is less likely to cause damage to the workpiece is a problem that this utility model urgently needs to solve. Utility Model Content

[0004] The purpose of this invention is to provide a plastic fixture suitable for powder coating of die-cast parts, which solves the problems that existing coating fixtures are mostly made of sheet metal, which can easily cause damage to the workpiece and increase the load on related equipment.

[0005] To achieve the above objectives, this utility model provides a plastic fixture adapted for powder coating of die-cast parts, the plastic fixture comprising: The base is used to support the workpiece to be coated. The top cover, which cooperates with the base, is used to at least partially cover the workpiece to be coated; Both the base and the top cover are made of conductive plastic material.

[0006] Preferably, the workpiece to be coated includes a main body, a recessed groove is formed in the middle of the main body, a surrounding part is formed around the groove, the interior of the groove is a non-coating area, and the upper cover is engaged in the surrounding part to cover the non-coating area.

[0007] Preferably, the receiving groove has a through groove structure inside; The lower end face of the upper cover has an engaging portion; A locking groove is formed on the base; The engaging portion passes through the through-groove structure and is at least partially engaged within the engaging groove.

[0008] Preferably, the engaging part is a vertical strip structure capable of elastic deformation, with a wedge-shaped block that is larger at the top and smaller at the bottom formed on one side of the vertical strip structure, and a hook structure protruding from the other side.

[0009] Preferably, a clearance groove is formed at the bottom of the workpiece to be coated; The surface of the base has a positioning block that mates with the clearance groove.

[0010] Preferably, the bottom of the workpiece to be coated has a reinforcing rib structure; The base has positioning grooves around its periphery that mate with the reinforcing rib structure.

[0011] Beneficial Effects: This utility model provides a plastic fixture adapted for powder coating of die-cast parts. The plastic fixture includes: a base for supporting the workpiece to be coated; and a top cover that cooperates with the base to at least partially cover the workpiece to be coated. Both the base and the top cover are made of conductive plastic material. The conductive plastic material can be nylon (PA) filled with carbon fiber, due to its good strength, wear resistance, and stable conductivity; it can also be polypropylene (PP) filled with carbon black, which is less expensive and suitable for disposable or short-term use fixtures; or it can be polycarbonate (PC) filled with metal powder, etc. Those skilled in the art can select suitable materials from a variety of commercially available conductive engineering plastics based on the fixture's strength requirements, service life, cost, and conductivity requirements. The fixture can be manufactured using conventional plastic processing methods in the art, such as injection molding, which is efficient and can quickly manufacture fixture top covers and bases with complex structures. Compared to sheet metal fixtures in existing technologies, the conductive plastic base and top cover not only meet the conductivity requirements of powder coating, but also do not damage the workpiece surface, are lighter, reduce the load on related equipment, and lower the production cost of the fixture.

[0012] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural diagram of the plastic fixture provided by this utility model; Figure 2 This is an exploded view of the plastic fixture provided by this utility model; Figure 3 yes Figure 2 Enlarged view of section A; Figure 4This is a structural diagram of the workpiece to be coated in the plastic fixture provided by this utility model.

[0014] Explanation of reference numerals in the attached figures 1-Top cover; 2-Main body; 3-Enclosure part; 4-Accommodation groove; 5-Base; 6-Positioning groove; 7-Interlocking groove; 8-Positioning block; 9-Interlocking part; 10-Wedge block; 11-Hook structure; 12-Through groove structure. Detailed Implementation

[0015] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0016] like Figure 1-4 As shown: This utility model provides a plastic fixture adapted for powder coating of die-cast parts. The plastic fixture includes: a base 5 for supporting the workpiece to be coated; and a top cover 1, which cooperates with the base 5 to at least partially cover the workpiece to be coated. Both the base 5 and the top cover 1 are made of conductive plastic material. Compared with sheet metal fixtures in the prior art, the conductive plastic base and top cover not only meet the conductivity requirements of powder coating, but also do not damage the workpiece surface, are lightweight, reduce the load on related equipment, and lower the production cost of the fixture.

[0017] In a preferred embodiment of the present invention, the workpiece to be coated includes a main body 2, a receiving groove 4 is formed in the middle of the main body 2, a surrounding part 3 is formed around the receiving groove 4, the internal structure of the receiving groove 4 is a non-coating area, and the upper cover 1 is engaged in the surrounding part 3 to cover the non-coating area.

[0018] In a preferred embodiment of this utility model, in order to press the workpiece firmly onto the base, a through groove structure 12 is formed inside the receiving groove 4; a locking part 9 is formed on the lower end face of the upper cover 1; a locking groove 7 is formed on the base 5; the locking part 9 passes through the through groove structure 12 and is at least partially locked in the locking groove 7.

[0019] In a preferred embodiment of this invention, the engaging portion 9 is a vertical strip structure capable of elastic deformation. One side of the vertical strip structure has a wedge-shaped block 10 that is larger at the top and smaller at the bottom, while the other side protrudes to form a hook structure 11. When the vertical strip structure passes through the engaging groove on the base, the inclined surface of the wedge-shaped block contacts the groove wall, causing the vertical strip structure to deform under pressure. This allows the hook structure to slide in and lock into the bottom of the engaging groove.

[0020] In a preferred embodiment of this utility model, in order to enable the workpiece to be accurately positioned on the base, a clearance groove is formed at the bottom of the workpiece to be sprayed; a positioning block 8 that cooperates with the clearance groove is formed on the surface of the base 5.

[0021] In a preferred embodiment of this utility model, in order to avoid relative displacement of the workpiece on the base, a reinforcing rib structure is formed at the bottom of the workpiece to be sprayed; a positioning groove 6 that cooperates with the reinforcing rib structure is formed around the periphery of the base 5.

[0022] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0023] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0024] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A plastic fixture adapted for powder coating of die-cast parts, characterized in that, The plastic fixture includes: The base (5) is used to support the workpiece to be sprayed; The top cover (1) cooperates with the base (5) to at least partially cover the workpiece to be sprayed; The base (5) and the top cover (1) are both made of conductive plastic material.

2. The plastic fixture adapted for powder coating of die-cast parts according to claim 1, characterized in that, The workpiece to be coated includes a main body (2), a recessed accommodating groove (4) is formed in the middle of the main body (2), a surrounding part (3) is formed around the accommodating groove (4), the internal structure of the accommodating groove (4) is a non-coating area, and the upper cover (1) is engaged in the surrounding part (3) to cover the non-coating area.

3. The plastic fixture adapted for powder coating of die-cast parts according to claim 2, characterized in that, The receiving groove (4) has a through groove structure (12) inside; The lower end face of the upper cover (1) has a locking part (9). A locking groove (7) is formed on the base (5); The engaging part (9) passes through the through groove structure (12) and is at least partially engaged in the engaging groove (7).

4. The plastic fixture adapted for powder coating of die-cast parts according to claim 3, characterized in that, The engaging part (9) is a vertical strip structure capable of elastic deformation. One side of the vertical strip structure has a wedge-shaped block (10) that is larger at the top and smaller at the bottom, and the other side has a hook structure (11) protruding from it.

5. The plastic fixture adapted for powder coating of die-cast parts according to claim 4, characterized in that, A clearance groove is formed at the bottom of the workpiece to be coated; The surface of the base (5) is formed with a positioning block (8) that cooperates with the clearance groove.

6. The plastic fixture adapted for powder coating of die-cast parts according to claim 5, characterized in that, The bottom of the workpiece to be coated has a reinforcing rib structure; The base (5) has a positioning groove (6) around its periphery that cooperates with the reinforcing rib structure.

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