Chromium plating clamp for T-shaped shaft

Abstract

The utility model belongs to the field of chromium plating of parts containing T-shaped shafts, and relates to a chromium plating clamp of a T-shaped shaft, which comprises a pictographic anode, a positioning sleeve, a screw rod, a hook and an absorption ring, the positioning sleeve is sleeved on the outer shaft surface of the T-shaped shaft part, the lower end of the pictographic anode is fixedly arranged at the root part of a conical head of the positioning sleeve, and the upper end of the pictographic anode is connected with an external anode bar; the chrome-plated part of the conformal anode right faces the disc face, to be subjected to chrome-plated, of the T-shaped shaft part, the absorption ring is connected to the outer circle of the disc face of the T-shaped shaft part in a sleeved mode, the screw is arranged in the T-shaped shaft part and makes contact with the inner wall face of the T-shaped shaft part, the two ends of the screw penetrate out of the two corresponding side end faces of the positioning sleeve respectively and are connected with the lower end of the hook, and the upper end of the hook is hung on a cathode bar of a chrome-plated tank. According to the utility model, the distribution of power lines is improved, the chromium plating uniformity is improved, the chromium plating time is shortened, and the chromium plating efficiency is improved; the influence of the sharp edge effect on the thickness of the edge chromium layer is weakened, and the roughness of the edge chromium layer is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the field of chrome plating of parts containing T-shaped shafts, and particularly relates to a chrome plating fixture for the T-shaped shaft. Background Art

[0002] Since the chromium layer has the advantages of high hardness, high wear resistance, low friction coefficient and significant anti-friction effect, thick chromium electroplating is the first choice for parts subject to high friction. However, the cathode efficiency of the chromium plating solution is low, the dispersion ability is extremely low, and the coverage ability is poor. The "tip or edge" effect is particularly significant during the electrodeposition process of the T-shaped shaft. The uneven distribution of electric lines ultimately causes uneven thickness of the chromium layer in different parts, seriously affecting the qualified rate of the parts. Therefore, the preparation of anode tooling for improving the distribution of electric lines is of great significance for reducing costs and increasing efficiency of thick chromium electroplating. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the above-mentioned prior art and provide a chrome-plated fixture for a T-shaped shaft.

[0004] Technical solution:

[0005] A chrome-plating fixture for a T-shaped shaft comprises a pictographic anode, a positioning sleeve, a screw, a hook and an absorption ring. The positioning sleeve is sleeved on the outer shaft surface of the T-shaped shaft part, the lower end of the pictographic anode is fixedly arranged at the root of the conical head of the positioning sleeve, the upper end of the pictographic anode is connected to the external anode rod, the chrome-plated part of the pictographic anode faces the disk surface of the T-shaped shaft part to be chrome-plated, the absorption ring is sleeved on the outer circle of the disk surface of the T-shaped shaft part, the screw is arranged inside the T-shaped shaft part and contacts the inner wall surface of the T-shaped shaft part, the two ends of the screw respectively pass through the corresponding two side end surfaces of the positioning sleeve and are connected to the lower end of the hook, and the upper end of the hook is mounted on the cathode rod of the chrome plating tank.

[0006] Furthermore, the pictographic anode includes a limiting segment, a pictographic segment, a reinforcement ring and a conductive sheet. The conductive sheet is connected to the pictographic segment and is used to conduct electricity to the pictographic segment. The limiting segment is arranged on one side of the pictographic segment. The limiting segment is connected to the outer shaft surface of the positioning sleeve through a fixing pin. The other side of the pictographic segment is connected to the reinforcement ring. The pictographic segment and the reinforcement ring are facing the disk surface of the T-shaped shaft part to be chrome-plated.

[0007] Furthermore, the pictographic anode is a mesh structure.

[0008] Furthermore, the absorption ring is a conical ring structure with a radial threaded through hole. The absorption ring is fixed to the outer circle of the T-shaped shaft part disk by passing a cylindrical head screw through the threaded through hole.

[0009] Furthermore, both ends of the screw are connected to the lower ends of the corresponding hooks through small hexagonal nuts.

[0010] Furthermore, the chrome-plated fixture also includes a handle and a handle sleeve. The handle sleeve is sleeved on the outer shaft surface of the handle, and the two ends of the handle are respectively connected to the corresponding hook middle section through a small hexagonal nut.

[0011] Furthermore, the chrome plating fixture further comprises a double-ended wire clamp, and the conductive sheet of the pictographic anode is connected to the anode rod via the double-ended wire clamp.

[0012] Furthermore, annular grooves are respectively provided at both ends of the interior of the positioning sleeve along the axial direction, which cooperate with the two ends of the T-shaped shaft part and are used to position the T-shaped shaft part.

[0013] Furthermore, the middle portion of the screw is a stepped shaft section, which contacts the inner wall of the T-shaped shaft part for cathode conduction, and the surface of the screw is silver-plated.

[0014] Furthermore, the double-ended wire clamp includes two conductive copper clamps, and the two conductive copper clamps are connected by a flexible wire.

[0015] Beneficial effects:

[0016] (1) The pictographic anode designed in this utility model is composed of a limiting section, a pictographic section, a reinforcement ring, and a conductive sheet. The pictographic section and the reinforcement ring are directly opposite the surface to be plated and are fastened to the positioning sleeve by a fixing pin. The positioning sleeve separates the T-shaped shaft and the pictographic anode, thereby insulating the pictographic anode from the T-shaped shaft parts. The screw is provided with an external thread, and a small hexagonal nut is used to fix and limit the pictographic anode, the positioning sleeve, and the hook. This improves the distribution of power lines, improves the uniformity of chrome plating, reduces chrome plating time, and improves chrome plating efficiency.

[0017] (2) The utility model designs an absorption ring with a conical ring structure, which is provided with a radial threaded through hole and is connected to the part by a cylindrical head screw, thereby reducing the influence of the sharp edge effect on the thickness of the edge chromium layer, effectively avoiding the roughness of the edge chromium layer, and reducing the risk of chipping in subsequent machining and grinding.

[0018] (3) The utility model has a long service life and low cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the chrome-plating fixture of the present invention.

[0020] Figure 2 It is a schematic diagram of T-shaped shaft parts;

[0021] Figure 3 is a schematic diagram of the absorption ring;

[0022] Figure 4 It is a schematic diagram of the screw;

[0023] Figure 5 This is a schematic diagram of the assembly of the absorption ring, T-shaped shaft parts and screw;

[0024] Figure 6 It is a schematic diagram of the positioning sleeve;

[0025] Figure 7 It is a pictographic anode schematic diagram;

[0026] Figure 8 It is a schematic diagram of the assembly of the positioning sleeve and the pictographic anode;

[0027] Figure 9 This is a schematic diagram of the assembly of the handle, carrying sleeve and hook;

[0028] Figure 10 This is an exploded view of the handle, carrying sleeve and hook assembly;

[0029] Figure 11 It is an exploded view of the chrome-plated fixture of the present invention.

[0030] Among them, 1. Pictographic anode, 2. Positioning sleeve, 3. Screw, 4. Hook, 5. Absorption ring, 6. Handle, 7. Fixing pin, 8. Small hexagonal nut one, 9. Small hexagonal nut two, 10. Cylindrical head screw, 11. Handle sleeve, 12. Double-head wire clamp. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figure 1 As shown, the utility model proposes a chrome plating fixture for a T-shaped shaft, comprising a pictographic anode 1, a positioning sleeve 2, a screw 3, a hook 4 and an absorption ring 5. The positioning sleeve 2 is sleeved on the outer shaft surface of the T-shaped shaft part, the lower end of the pictographic anode 1 is fixedly arranged at the root of the conical head of the positioning sleeve 2, the upper end of the pictographic anode 1 is connected to the external anode rod, the chrome-plated part of the pictographic anode 1 faces the disk surface to be chrome-plated of the T-shaped shaft part, the absorption ring 5 is sleeved on the outer circle of the disk surface of the T-shaped shaft part, the screw 3 is arranged inside the T-shaped shaft part and contacts the inner wall surface of the T-shaped shaft part, the two ends of the screw 3 respectively pass through the corresponding two side end surfaces of the positioning sleeve 2 and are connected to the lower end of the hook 4, and the upper end of the hook 4 is mounted on the cathode rod of the chrome plating tank.

[0033] In the present invention, the pictographic anode 1 is an annular structure with a limiting section. The annular structure with a limiting section is wrapped around the root of the conical head of the positioning sleeve 2 and is used to position the pictographic anode 1. Specifically, the pictographic anode 1 includes a limiting section, a pictographic section, a reinforcement ring and a conductive sheet. The conductive sheet is connected to the pictographic section and is used to conduct electricity to the pictographic section. The limiting section is arranged on one side of the pictographic section. The limiting section is connected to the outer axial surface of the positioning sleeve 2 through a fixing pin 7. The other side of the pictographic section is connected to the reinforcement ring. The pictographic section and the reinforcement ring are facing the disk surface to be chromium-plated of the T-shaped shaft part, so as to ensure the uniformity of the chromium layer on the surface to be plated.

[0034] In the present invention, the pictographic anode 1 is a mesh structure, which is convenient for solution and heat exchange. The pictographic anode 1 is plated with precious metals, which can effectively extend the service life of the pictographic anode 1 in the chrome plating tank.

[0035] In the present invention, both ends of the screw 3 are provided with external threads, and the two ends of the screw are respectively connected to the lower end of the corresponding hook 4 through a small hexagonal nut 29, and the object-shaped anode 1, positioning sleeve 2, and hook 4 are fixed and limited by the small hexagonal nut 29.

[0036] In the present invention, annular grooves are provided at both ends of the positioning sleeve 2 along the axial direction, which cooperate with both ends of the T-shaped shaft part to position the T-shaped shaft part and are insulated from the pictographic anode 1.

[0037] In the present invention, the middle part of the screw 3 is a stepped shaft section, which contacts the inner wall of the T-shaped shaft part and is connected to the cathode rod through a hook 4 for cathode conduction. The screw 3 is silver-plated, which can effectively extend the corrosion resistance of the screw 3 in the chrome plating bath.

[0038] In the present invention, the absorption ring 5 is a conical ring structure with a radial threaded through hole. The cylindrical head screw 10 passes through the threaded through hole to fix the absorption ring 5 on the outer circle of the T-shaped shaft part disk to reduce the influence of the sharp edge effect.

[0039] In the present invention, the hook 4 is a flat structure with the top bent into a C shape. It is mounted on the cathode rod of the chrome-plated tank, the middle section is twisted 90°, connected to the screw through a small hexagonal nut 8, and connected to the conductive part through the screw 3.

[0040] In the present invention, the chrome-plated clamp also includes a handle 6 and a carrying sleeve 11. The carrying sleeve 11 is sleeved on the outer axial surface of the handle 6. The two ends of the handle 6 are respectively connected to the middle section of the corresponding hook 4 through a small hexagonal nut 8. When hanging or removing the clamp, the handle 6 can be lifted for operation. At the same time, since the wires of the double-ended wire clamp 12 are long, in order to avoid entanglement, the wires of the double-ended wire clamp 12 can be fixed on the carrying sleeve 11.

[0041] In the present invention, the chrome plating fixture further includes a double-ended wire clamp 12, through which the conductive sheet of the pictographic anode 1 is connected to the anode rod. The double-ended wire clamp 12 comprises two conductive copper clips connected by a flexible wire. The double-ended wire clamp 12 has a flexible connection in the middle, with conductive copper clips at both ends, facilitating electrical conduction between the pictographic anode 1 and the anode rod at any angle.

[0042] When in use, it is connected to the cathode rod of the plating tank through the hook 4, and the screw 3 and the cathode rod are energized; it is clamped on the anode rod of the plating tank through the double-headed wire clamp 12, and the pictographic anode 1 and the anode rod are energized. The pictographic anode 1 and the parts are immersed in the chrome plating tank liquid to form a circuit. The chrome plating parameters are set according to the corresponding process and chrome plating can be carried out.

[0043] The utility model utilizes a pictographic anode 1 designed to resemble the chrome-plated surface of a component. The anode consists of a limiting segment, a pictographic segment, a reinforcement ring, and a conductive sheet. The pictographic segment and reinforcement ring are aligned with the surface to be plated, ensuring that all points on the anode are equidistant from the chrome-plated surface of the T-shaped shaft component. A fixing pin secures the anode to a positioning sleeve 2, which insulates the T-shaped shaft from the anode 1. A screw 3 is externally threaded and secured and limited by a small hexagonal nut to the anode 1, positioning sleeve 2, and hook 4. This improves the distribution of power lines, enhances chrome plating uniformity, reduces plating time, and enhances chrome plating efficiency.

[0044] The utility model designs an absorption ring 5 with a conical ring structure, which is provided with a radial threaded through hole and is connected to the part by a cylindrical head screw 10, thereby reducing the influence of the sharp edge effect on the thickness of the edge chromium layer, effectively avoiding the roughness of the edge chromium layer, and reducing the risk of edge chipping during subsequent machining and grinding.

[0045] By performing special treatment on the object-shaped anode 1 and the screw 3, the service life of the entire tooling is greatly improved and the cost of tooling use is reduced.

[0046] Although the technical solution of the present application has been described in detail, technicians in this field can make reasonable changes, replacements or deformations to the structure and content of the technical solution of the present application. These changes or improvements to the technical solution all fall within the scope of protection of the present application.

Claims

1. A chrome-plated fixture for a T-shaped shaft, characterized in that: It includes a pictographic anode, a positioning sleeve, a screw, a hook and an absorption ring. The positioning sleeve is sleeved on the outer shaft surface of the T-shaped shaft part, the lower end of the pictographic anode is fixedly arranged at the root of the conical head of the positioning sleeve, the upper end of the pictographic anode is connected to the external anode rod, the chrome-plated part of the pictographic anode faces the disk surface of the T-shaped shaft part to be chrome-plated, the absorption ring is sleeved on the outer circle of the disk surface of the T-shaped shaft part, the screw is arranged inside the T-shaped shaft part and contacts the inner wall surface of the T-shaped shaft part, the two ends of the screw respectively pass through the corresponding two side end surfaces of the positioning sleeve and are connected to the lower end of the hook, and the upper end of the hook is mounted on the cathode rod of the chrome plating tank.

2. The chrome-plated fixture for T-shaped shaft according to claim 1, characterized in that: The pictographic anode includes a limiting section, a pictographic section, a reinforcement ring and a conductive sheet. The conductive sheet is connected to the pictographic section and is used to conduct electricity to the pictographic section. The limiting section is arranged on one side of the pictographic section. The limiting section is connected to the outer shaft surface of the positioning sleeve through a fixing pin. The other side of the pictographic section is connected to the reinforcement ring. The pictographic section and the reinforcement ring are facing the disk surface to be chrome-plated of the T-shaped shaft part.

3. The chrome-plated fixture for T-shaped shaft according to claim 1, characterized in that: The pictographic anode is a mesh structure.

4. The chrome-plated fixture for a T-shaped shaft according to claim 1, characterized in that: The absorption ring is a conical ring structure with a radial threaded through hole. A cylindrical head screw passes through the threaded through hole to fix the absorption ring on the outer circle of the T-shaped shaft part disk.

5. The chrome-plated fixture for a T-shaped shaft according to claim 1, characterized in that: The two ends of the screw are connected to the lower ends of the corresponding hooks through small hexagonal nuts.

6. The chrome-plated fixture for a T-shaped shaft according to claim 1, characterized in that: The chrome-plated fixture also includes a handle and a handle sleeve. The handle sleeve is sleeved on the outer shaft surface of the handle. The two ends of the handle are respectively connected to the corresponding hook middle section through a small hexagonal nut.

7. The chrome-plated fixture for a T-shaped shaft according to claim 2, characterized in that: The chrome plating fixture further comprises a double-headed wire clamp, and the conductive sheet of the pictographic anode is connected to the anode rod via the double-headed wire clamp.

8. The chrome-plated fixture for a T-shaped shaft according to claim 2, characterized in that: Annular grooves are respectively provided at both ends of the interior of the positioning sleeve along the axial direction, which cooperate with the two ends of the T-shaped shaft part and are used to position the T-shaped shaft part.

9. The chrome-plated fixture for a T-shaped shaft according to claim 2, characterized in that: The middle part of the screw is a stepped shaft section, which contacts the inner wall of the T-shaped shaft part to conduct cathode electricity; the surface of the screw is silver-plated.

10. The chrome-plated fixture for a T-shaped shaft according to claim 7, characterized in that: The double-ended wire clamp includes two conductive copper clamps, which are connected by a flexible wire.

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