End cover inner wall chromium plating process device

Abstract

The utility model discloses an end cover inner wall chromium plating process device which comprises an end cover body, a conformal taper circular ring anode is fixedly assembled in the center of the top of the end cover body, a plurality of first threaded holes are formed in the position, close to the outer side, of the end cover body, an insulating sleeve is arranged in the conformal taper circular ring anode, and a plurality of second threaded holes are formed in the insulating sleeve. The bottom of the outer side of the insulating sleeve is in threaded connection with the conformal taper ring anode, and second threaded holes are formed in the positions, close to the two sides, of the top of the insulating sleeve. According to the end cover inner wall chromium plating process device, through the innovative conformal taper ring anode design, the chromium plating effect of the inner wall of the end cover, especially the area with the small structural size and poor solution circulation, is effectively improved, the conformal taper design not only increases the contact area between the anode and a plating solution, but also promotes the uniform flowing of the plating solution, and the plating quality is improved. Therefore, the problem that the chromium layer is not uniform due to poor solution circulation is solved, and the uniformity and consistency of the chromium coating on the inner wall of the end cover are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of chrome plating process technology for surface treatment of inner wall structure of parts, specifically a chrome plating process device for the inner wall of an end cap. Background Technology

[0002] After steel parts are surface-treated and chrome-plated, their hardness, wear resistance, and corrosion resistance can be improved. However, due to the characteristics of the chrome plating process, the cathode current density is much higher than that of other plating types, and the electrolyte dispersion ability is also poorer. Therefore, the requirements for the fixture design of the chrome plating process are quite strict. How to design and manufacture a reasonable fixture device is one of the important factors in ensuring the quality of the chrome layer.

[0003] Currently, the design of chrome plating fixtures for regular cylindrical and rod-shaped parts in the field of surface treatment technology has reached a certain level of maturity. However, for chrome plating of the inner wall surface of end cap parts, especially for challenging structures with small structural dimensions, poor solution circulation, and strict inner wall dimensional tolerances, the design of regular tooling structures can no longer meet the product's usage requirements. Utility Model Content

[0004] The purpose of this utility model is to provide a chromium plating process device for the inner wall of an end cap, so as to solve the problem mentioned in the background art that the conventional tooling structure design can no longer meet the product's usage requirements for chromium plating on the inner wall surface of end cap parts, especially for structures with small size, poor solution circulation, and strict inner wall dimensional tolerances.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a chrome plating process apparatus for the inner wall of an end cap, comprising an end cap body, wherein a figurative tapered annular anode is fixedly mounted at the center of the top of the end cap body, and a plurality of threaded holes are provided on the outer side of the end cap body, an insulating sleeve is provided inside the figurative tapered annular anode, the bottom of the outer side of the insulating sleeve is threadedly connected to the figurative tapered annular anode, and threaded holes are provided on both sides of the top of the insulating sleeve, an auxiliary cathode plate is provided on the top of the end cap body, the auxiliary cathode plate is sleeved with the figurative tapered annular anode, and the top of the insulating sleeve extends to the outside of the figurative tapered annular anode.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This end cap inner wall chromium plating process device, through an innovative figurative tapered annular anode design, effectively improves the chromium plating effect on the inner wall of the end cap, especially in areas with smaller structural dimensions and poor solution circulation. The figurative tapered design not only increases the contact area between the anode and the plating solution but also promotes uniform flow of the plating solution, thereby solving the problem of uneven chromium layer caused by poor solution circulation. This significantly improves the uniformity and consistency of the chromium plating layer on the inner wall of the end cap. The ingenious combination of the figurative tapered annular anode and the auxiliary cathode plate in the device ensures the uniformity of current distribution during the chromium plating process, avoiding the phenomenon of excessively thick or thin local plating layers caused by current concentration. This ensures strict control of the dimensional tolerances of the inner wall of the end cap, meeting the requirements of high-precision products. By having the anode and cathode coexist in a single process device, the number of clamping and disassembling operations required in traditional chromium plating processes is reduced. The unloading process greatly simplifies the operation and improves production efficiency. Meanwhile, the design of auxiliary structures such as hooks and welded long bolts facilitates the hoisting and fixing of the device, further reducing the labor intensity of workers. The design of the figurative tapered annular anode not only solves the chrome plating process problem but also expands the design concept of figurative anodes, providing new inspiration for the design of chrome plating tooling fixtures for similar structural parts. This innovative design not only improves chrome plating efficiency and quality but also enriches the processing experience and technical reserves of tooling fixtures. This utility model has been successfully applied to the chrome plating process of the inner wall surface of a certain product end cap structure. Actual production verification shows that its chrome plating effect is very ideal, not only meeting the product's usage requirements but also improving production efficiency and reducing production costs. Therefore, this device has broad application value. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2 This is a schematic diagram of the structure of the pictographic tapered annular anode of this utility model.

[0010] Figure 3 This is a schematic diagram of the structure of the insulating sleeve of this utility model.

[0011] Figure 4 This is a top view schematic diagram of the structure of the auxiliary cathode plate of this utility model.

[0012] Figure 5 This utility model Figure 1 A magnified view of part A in the diagram.

[0013] Figure 6 This utility model Figure 1 A magnified view of part B in the diagram.

[0014] In the diagram: 1. End cap body; 2. Threaded hole one; 3. Pictographic tapered annular anode; 4. Insulating sleeve; 5. Threaded hole two; 6. Mounting bolt; 7. Auxiliary cathode plate; 8. Through hole; 9. Limiting screw; 10. Hook; 11. Welded long rod bolt. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-6 This utility model provides a technical solution: a chrome plating process device for the inner wall of an end cap, including an end cap body 1, a figurative tapered annular anode 3 fixedly mounted at the center of the top of the end cap body 1, a plurality of threaded holes 2 on the outer side of the end cap body 1, an insulating sleeve 4 disposed inside the figurative tapered annular anode 3, the bottom of the outer side of the insulating sleeve 4 being threadedly connected to the figurative tapered annular anode 3, threaded holes 5 on both sides of the top of the insulating sleeve 4, an auxiliary cathode plate 7 disposed on the top of the end cap body 1, the auxiliary cathode plate 7 being sleeved with the figurative tapered annular anode 3, and the top of the insulating sleeve 4 extending to the outside of the figurative tapered annular anode 3.

[0017] The insulating sleeve 4 is made of plexiglass.

[0018] The top of the insulating sleeve 4 is threaded with mounting bolts 6 on both sides. The bottom of the mounting bolts 6 extends through the outside of the threaded hole 5 and is threadedly connected to the center of the top of the end cap body 1.

[0019] The auxiliary cathode plate 7 has through holes 8 on both sides, and the top of the auxiliary cathode plate 7 has limit screws 9 on both sides. The bottom of the two limit screws 9 passes through the two through holes 8 and the threaded holes 2 on both sides and is threadedly connected to the threaded holes 2.

[0020] A long welded bolt 11 is welded to the rear side of the top of the pictographic tapered annular anode 3.

[0021] Hooks 10 are fixedly connected to both sides of the top of the end cap body 1.

[0022] Working principle: The end cap part to be chromium-plated is placed inside the end cap body 1, ensuring the correct relative position with the figurative tapered annular anode 3 and the auxiliary cathode plate 7. The chromium plating equipment is started, and the plating solution begins to circulate. The design of the figurative tapered annular anode 3 promotes the uniform flow of the plating solution, ensuring that the plating solution can fully contact all areas of the inner wall of the end cap. At the same time, the setting of the auxiliary cathode plate 7 ensures the uniform distribution of current during the chromium plating process, avoiding the phenomenon of excessively thick or thin local plating layers caused by current concentration. Under the action of current, chromium ions in the plating solution undergo a reduction reaction on the inner wall of the end cap to form a chromium plating layer. The ingenious combination of the figurative tapered annular anode 3 and the auxiliary cathode plate 7 ensures the uniformity and consistency of the chromium plating layer. After the chromium plating process is completed, the device is removed from the chromium plating equipment by using the hook 10 and the welded long rod bolt 11 for subsequent cleaning, inspection and assembly work.

[0023] In summary, this end cap inner wall chromium plating process device, through its innovative design of a figuratively tapered annular anode 3, effectively improves the chromium plating effect on the inner wall of the end cap, especially in areas with smaller structural dimensions and poor solution circulation. The figuratively tapered design not only increases the contact area between the anode and the plating solution but also promotes uniform flow of the plating solution, thus solving the problem of uneven chromium layer caused by poor solution circulation. This significantly improves the uniformity and consistency of the chromium plating layer on the inner wall of the end cap. The ingenious combination of the figuratively tapered annular anode 3 and the auxiliary cathode plate 7 ensures the uniformity of current distribution during the chromium plating process, avoiding localized excessively thick or thin plating layers caused by current concentration. This ensures strict control of the dimensional tolerances of the inner wall of the end cap, meeting the requirements of high-precision products. By coexisting the anode and cathode in a single process device, it reduces the need for multiple clamping operations required in traditional chromium plating processes. The disassembly process greatly simplifies the operation and improves production efficiency. Meanwhile, the design of auxiliary structures such as the hook 10 and welded long bolts 11 facilitates the hoisting and fixing of the device, further reducing the labor intensity of workers. The design of the figurative tapered annular anode 3 not only solves the chrome plating process problem but also expands the design concept of figurative anodes, providing new inspiration for the design of chrome plating tooling fixtures for similar structural parts. This innovative design not only improves chrome plating efficiency and quality but also enriches the processing experience and technical reserves of tooling fixtures. This utility model has been successfully applied to the chrome plating process of the inner wall surface of a certain product end cap structure. Actual production verification shows that its chrome plating effect is very ideal, not only meeting the product's usage requirements but also improving production efficiency and reducing production costs. Therefore, this device has broad application value.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chrome plating process apparatus for the inner wall of an end cap, comprising an end cap body (1), characterized in that: The end cap body (1) is fixedly fitted with a figurative tapered annular anode (3) at the center of its top. Several threaded holes (2) are opened on the outer side of the end cap body (1). An insulating sleeve (4) is provided inside the figurative tapered annular anode (3). The bottom of the outer side of the insulating sleeve (4) is threaded to the figurative tapered annular anode (3). Threaded holes (5) are opened on both sides of the top of the insulating sleeve (4). An auxiliary cathode plate (7) is provided on the top of the end cap body (1). The auxiliary cathode plate (7) is fitted with the figurative tapered annular anode (3). The top of the insulating sleeve (4) extends to the outside of the figurative tapered annular anode (3).

2. The apparatus for chrome plating the inner wall of an end cap according to claim 1, characterized in that: The insulating sleeve (4) is made of plexiglass.

3. The apparatus for chrome plating the inner wall of an end cap according to claim 1, characterized in that: The top of the insulating sleeve (4) is threaded with mounting bolts (6) on both sides. The bottom of the mounting bolts (6) extends through the outside of the threaded hole (5) and is threadedly connected to the center of the top of the end cap body (1).

4. The apparatus for chrome plating the inner wall of an end cap according to claim 1, characterized in that: The auxiliary cathode plate (7) has through holes (8) on both sides. The top of the auxiliary cathode plate (7) is provided with limit screws (9) on both sides. The bottom of the two limit screws (9) passes through the two through holes (8) and the threaded holes (2) on both sides and is threadedly connected to the threaded holes (2).

5. The apparatus for chrome plating the inner wall of an end cap according to claim 1, characterized in that: The rear side of the top of the pictographic tapered annular anode (3) is welded with a long welding rod bolt (11).

6. The apparatus for chrome plating the inner wall of an end cap according to claim 1, characterized in that: Hooks (10) are fixedly connected to both sides of the top of the end cap body (1).

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