Protection tool for chromium plating of rod parts

Abstract

A protection tool for chromium plating of rod parts comprises a base and an end cover, the whole base is cylindrical, a first blind hole is formed in the middle of the base, threads are arranged on the outer circle face of the base, the whole end cover is cylindrical, a second blind hole is formed in the end cover, and the first blind hole is communicated with the second blind hole. The inner wall of a second blind hole of the end cover is provided with threads matched with the threads on the outer circle face of the base, the base and the end cover are connected into a whole through the threads, the center of the end cover is further provided with a conical hole communicated with the second blind hole, and the base and the end cover are made of polyvinyl chloride. The protection effect of chromium plating on the surfaces of the rod parts is guaranteed, electroplating protection of the same area of different rod parts is achieved when one set of protection tool is applied, completeness of plating layers on the surfaces of the rod parts is guaranteed, use is convenient, operation is easy, cost is low, machining efficiency is improved, machining difficulty is reduced, the part surface quality and the product percent of pass are improved, and production cost is reduced. A plurality of parts can be machined at a time, and machining of different products can be continued.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology for electroplating, and in particular to a protective tooling for chrome plating of rod-type parts. Background Technology

[0002] Chromium plating has high hardness, good wear resistance, strong reflectivity, and good heat resistance. It is widely used as the outer layer and functional plating layer of protective and decorative plating systems, which can increase the surface finish, corrosion resistance, and wear resistance of parts.

[0003] In electroplating, due to the inconsistent functional requirements of different parts of a component, it is common to encounter situations where different plating types appear on local surfaces. The current common practice is to protect the unplated parts of the component with electroplating protective adhesive, protective paint, or paraffin wax, and then remove it after electroplating. However, this protection method has the following drawbacks: the protective adhesive, protective paint, or paraffin wax is easily corroded by the acid and alkali of the bath solution and affected by temperature and current, which can cause varying degrees of edge curling, affecting the protection effect and thus the electroplating quality; it can only protect individual parts, and the manual application of adhesive for local protection can easily lead to poor uniformity of the protected area, resulting in low protection effect and electroplating efficiency, which is not conducive to mass production; generally, when chrome plating rod-type parts, there are many parts requiring local protection, and the electroplating time is long, so methods such as adhesive protection are time-consuming, thus wasting a lot of manpower and resources. Utility Model Content

[0004] To address the problems mentioned in the background section, this utility model provides a protective tooling for chrome plating of rod-shaped parts.

[0005] This utility model discloses the following technical solution: a protective tooling for chrome plating of rod-shaped parts, including a base and an end cap. The base is cylindrical in shape, with a first blind hole in the middle and a thread on the outer surface of the base. The end cap is cylindrical in shape, with a second blind hole. The inner wall of the second blind hole of the end cap is threaded to engage with the thread on the outer surface of the base. The base and the end cap are connected as a whole by threads. The end cap also has a tapered hole at its center that communicates with the second blind hole. The base and the end cap are made of polyvinyl chloride.

[0006] Furthermore, a platform is also provided on the base.

[0007] Beneficial effects: Compared with the prior art, the present invention has the following beneficial effects:

[0008] 1. The use of end caps and bases together ensures the protection effect of chrome plating on the surface of rod-shaped parts. It enables the application of one set of protective fixtures to electroplating protection in the same area of ​​different rod-shaped parts. It has a strong fixing effect, improves work efficiency, and increases the applicability of chrome plating protection fixtures.

[0009] 2. When electroplating rod-type parts, the non-working surface is effectively protected to ensure the integrity of the plating layer on the surface of the rod-type parts; the end caps and bases are made of polyvinyl chloride material to isolate current, prevent the fixture from absorbing current, and ensure the uniform thickness and aesthetics of the chromium plating layer on the outer surface of the parts.

[0010] 3. During use, it is easy and flexible to adjust, simple to operate, easier to replace, lower in cost, can process multiple parts at once, and can be used for processing different products. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a rod-type part.

[0012] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the end cap structure of this utility model;

[0014] In the diagram: 1-base, 11-first blind hole, 12-platform, 2-end cap, 21-second blind hole, 22-conical hole. Detailed Implementation

[0015] like Figure 1 As shown, this rod-like part has a large-diameter frustum on one side and a small-diameter long rod on the other. The connection between the frustum and the long rod is rounded. Chromium plating is required on the long rod. During electroplating, the surface of the parts other than the long rod needs to be strictly protected, and the internal surface corrosion caused by pickling and other processes during electroplating must be avoided. Due to production needs, the electroplating of this rod-like product needs to be rack-mountable, so the protective layer must be tightly connected and cannot be loosened during the mounting process.

[0016] like Figures 2 to 3 As shown, a protective fixture for chrome plating of rod-shaped parts includes a base 1 and an end cap 2. The base 1 is cylindrical in shape and has a first blind hole 11 in the middle for accommodating the part to be protected. The outer surface of the base 1 is threaded. The end cap 2 is cylindrical in shape and has a second blind hole 21 for accommodating the part to be protected. The inner wall of the second blind hole 21 of the end cap 2 is threaded to mate with the thread on the outer surface of the base 1. The base 1 and the end cap 2 are connected as one unit by threads, providing good protection while facilitating disassembly and assembly. The end cap 2 also has a tapered hole 22 at its center that communicates with the second blind hole 21, ensuring a tight fit between the end cap 2 and the surface of the part when the end cap 2 passes through the long rod of the part. The base 1 and the end cap 2 are made of polyvinyl chloride, which has excellent current isolation properties, preventing the fixture from absorbing current and ensuring the uniform thickness and aesthetics of the chrome plating layer on the outer surface of the part.

[0017] The base 1 is also provided with a platform 12, which has the functions of reinforcement and clamping, and is easy to operate.

[0018] In use, the long rod of the part is passed through the inside of the end cap 2 and installed and fitted. Then, the base 1 is connected to the end cap 2 from the other end of the part and tightened by screwing. When the base 1, end cap 2 and the part to be protected are fitted, the local surface protection of this type of rod part can be completed. Compared with the use of protective tape, glue, and protective film, the protective fixture of this utility model can be quickly disassembled, ensuring a uniform and complete appearance. The protective fixture is easy to operate, which can improve processing efficiency, reduce processing difficulty, and improve the surface quality of parts and the product qualification rate.

[0019] 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 protective fixture for chrome plating of rod-shaped parts, comprising a base (1) and an end cap (2), characterized in that: The base (1) is cylindrical in shape. The base (1) has a first blind hole (11) in the middle. The outer surface of the base (1) is threaded. The end cap (2) is cylindrical in shape. The end cap (2) has a second blind hole (21). The inner wall of the second blind hole (21) of the end cap (2) is threaded to match the thread on the outer surface of the base (1). The base (1) and the end cap (2) are connected as one unit by threads. The end cap (2) also has a conical hole (22) at the center that communicates with the second blind hole (21). The base (1) and the end cap (2) are made of polyvinyl chloride.

2. The protective tooling for chrome plating of rod-type parts according to claim 1, characterized in that: A platform (12) is also provided on the base (1).

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