Shaft metal inner hole chromium plating device

Abstract

The utility model discloses a shaft type metal inner hole chromium plating device which comprises a chromium plating clamp, an anode rod, an upper insulation plug and a lower insulation plug, a workpiece is placed on the inner side of the chromium plating clamp, the lower insulation plug is arranged at one end of the anode rod in a sleeved mode, the lower insulation plug and the anode rod are plugged into an inner hole of the workpiece, and the upper insulation plug is arranged on the anode rod in a sleeved mode and plugs an inner hole opening of the workpiece. The chromium plating clamp comprises a pressing block and a fixing block, the pressing block and the fixing block are in an arc shape, one end of the pressing block is hinged to one end of the fixing block, the other end of the pressing block and the other end of the fixing block are fixed through a fastening screw, the two ends of the pressing block are provided with through holes allowing the hooks to penetrate through and are fixedly connected with the hooks, and one end of each hook is connected with the hanging ring. The device is simple in structure, economical and applicable, the cost is effectively reduced, electrons generated on the anode rod are prevented from moving towards a non-chromium-plating area through the upper insulating plug and the lower insulating plug, and the chromium plating accuracy of an inner hole of a workpiece is ensured.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing and processing technology, specifically to a device for chromium plating of the inner hole of a shaft-type metal. Background Technology

[0002] After steel parts are chrome-plated, their wear resistance and corrosion resistance can be improved. The company's shock-type products generally work in harsh environments and have high requirements for wear resistance and corrosion resistance. Therefore, it is necessary to chrome-plat the working parts of key components to improve the product's working stability and service life, thereby increasing the product's market share.

[0003] When chrome plating a workpiece, without specific tooling and fixtures, the entire part will be chrome-plated, which will not achieve the desired effect. This will not only cause waste, but also make it difficult to further process. Existing chrome plating equipment has a relatively complex structure, is difficult to operate, and is inconvenient to use. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a device for chromium plating of the inner bore of shaft-type metals. It has a simple structure, is easy to operate, and enables precise chromium plating of the inner bore of shaft-type metals.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for chrome plating the inner hole of a shaft-type metal, comprising a chrome plating fixture, an anode rod, an upper insulating plug, and a lower insulating plug. The workpiece is placed inside the chrome plating fixture. The lower insulating plug is sleeved on one end of the anode rod and inserted into the inner hole of the workpiece. The upper insulating plug is sleeved on the anode rod and plugs the inner hole of the workpiece. The chrome plating fixture includes a pressure block and a fixing block. The pressure block and the fixing block are arc-shaped. One end of the pressure block is hinged to one end of the fixing block. The other end of the pressure block and the other end of the fixing block are fixed by fastening screws. Both ends of the pressure block are provided with through holes for hooks to pass through and are fixedly connected to the hooks. One end of the hook is connected to a lifting ring.

[0006] The hook is fixedly connected to the reinforcing plate and the conductive plate, and the reinforcing plate and the conductive plate are welded together.

[0007] Both the upper and lower insulating plugs are provided with several flow guiding holes, which are divided into upper flow guiding holes and lower flow guiding holes.

[0008] The hook is provided with a hook-shaped ring at one end where it connects to the lifting ring.

[0009] The hook is welded and fixed to the pressure block.

[0010] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model has a simple structure, is economical and practical, effectively reduces costs, and prevents electrons generated on the anode rod from moving to the non-chromium-plated area by the upper and lower insulating plugs, thus ensuring accurate chromium plating of the inner hole of the workpiece. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0013] Figure 2 This is a schematic diagram of the structure of the chrome plating fixture of this utility model;

[0014] In the diagram: 1. Anode rod; 2. Upper insulating plug; 201. Upper guide hole; 3. Lower insulating plug; 301. Lower guide hole; 4. Workpiece; 5. Pressure block; 501. Through hole; 6. Fixing block; 7. Fastening screw; 8. Hook; 801. Hook-shaped ring; 9. Lifting ring; 10. Reinforcing plate; 11. Conductive plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0016] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments. Example

[0017] like Figures 1 to 2 As shown, this utility model provides a device for chrome plating the inner hole of a shaft-type metal, including a chrome plating fixture, an anode rod 1, an upper insulating plug 2, and a lower insulating plug 3. The workpiece 4 is placed inside the chrome plating fixture. The lower insulating plug 3 is sleeved on one end of the anode rod 1 and inserted into the inner hole of the workpiece 4. The upper insulating plug 2 is sleeved on the anode rod 1 and plugs the inner hole of the workpiece 4. The chrome plating fixture includes a pressure block 5 and a fixing block 6. The pressure block 5 and the fixing block 6 are arc-shaped. One end of the pressure block 5 is hinged to one end of the fixing block 6. The other end of the pressure block 5 and the other end of the fixing block 6 are fixed by fastening screws 7. The pressure block 5 has through holes 501 at both ends for hooks 8 to pass through and is fixedly connected to the hooks 8. One end of the hooks 8 is connected to a lifting ring 9.

[0018] Specifically, the hook 8 is fixedly connected to the reinforcing plate 10 and the conductive plate 11, and the reinforcing plate 10 and the conductive plate 11 are welded together; the upper insulating plug 2 and the lower insulating plug 3 are each provided with a plurality of flow guiding holes, the flow guiding holes being divided into an upper flow guiding hole 201 and a lower flow guiding hole 301; the end of the hook 8 connected to the lifting ring 9 is provided with a hook-shaped ring 801; the hook 8 is welded together with the pressure block 5.

[0019] This device has a simple overall structure, is economical and practical, and can effectively reduce costs; at the same time, it can accurately plate chrome onto the inner hole surface of workpiece 4, thereby improving the relevant performance of key components.

[0020] During operation, the anode rod 1 and the lower insulating plug 3 are first inserted into the inner hole of the workpiece 4, and then the upper insulating plug 2 is used to plug the inner hole of the workpiece 4. Then, the pressure block 5 and the fixing block 6 are fitted onto the outer circle of the workpiece 4, and the workpiece 4 is fixed by the pressure block 5 and the fixing block 6 through the fastening screw 7. The entire device is then hung in the electrolyte by the lifting ring 9. At this time, the workpiece 4 can be understood as the cathode. After the chromium ions in the electrolyte are energized, they move towards the inner hole surface of the workpiece 4. Then, the chromium ions discharge on the inner hole surface of the workpiece 4 and combine with electrons to form metallic chromium. The metallic chromium forms a covalent bond with the workpiece 4, forming a chromium layer on the inner hole surface of the workpiece 4, and the chromium plating is completed.

[0021] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A device for chromium plating of the inner hole of a shaft-type metal, characterized in that, The fixture includes a chrome plating fixture, an anode rod (1), an upper insulating plug (2), and a lower insulating plug (3). The workpiece (4) is placed inside the chrome plating fixture. The lower insulating plug (3) is fitted onto one end of the anode rod (1) and inserted into the inner hole of the workpiece (4) along with the anode rod (1). The upper insulating plug (2) is fitted onto the anode rod (1) and plugs the inner hole of the workpiece (4). The chrome plating fixture includes a pressure block (5) and a fixing block (6). The pressure block (5) and the fixing block (6) are arc-shaped. One end of the pressure block (5) is hinged to one end of the fixing block (6). The other end of the pressure block (5) and the other end of the fixing block (6) are fixed by fastening screws (7). The two ends of the pressure block (5) are provided with through holes (501) for the hook (8) to pass through and are fixedly connected to the hook (8). One end of the hook (8) is connected to the lifting ring (9).

2. The device for chrome plating the inner hole of a shaft-type metal according to claim 1, characterized in that, The hook (8) is fixedly connected to the reinforcing plate (10) and the conductive plate (11), and the reinforcing plate (10) and the conductive plate (11) are welded and fixed.

3. The device for chromium plating of the inner hole of a shaft-type metal according to claim 1, characterized in that, Both the upper insulating plug (2) and the lower insulating plug (3) are provided with several flow guide holes, which are divided into upper flow guide holes (201) and lower flow guide holes (301).

4. The device for chrome plating the inner hole of a shaft-type metal according to claim 1, characterized in that, The hook (8) is connected to the ring (9) at one end with a hook-shaped ring (801).

5. The device for chromium plating of the inner hole of a shaft-type metal according to claim 1, characterized in that, The hook (8) is welded and fixed to the pressure block (5).

Images