Detachable galvanizing auxiliary anode tool

Abstract

The utility model relates to a detachable galvanizing auxiliary anode tool which comprises a cathode hanging body, an anode hanging body and a plurality of auxiliary anode pieces, the top of the cathode hanging body is provided with a hook, and the cathode hanging body is hung on the cathode copper bar through the hook; a first transverse plate is fixed at the bottom of the cathode hanging body, and a plurality of connecting bolts are arranged on the first transverse plate; a plurality of insulating plastic connecting pieces are fixed on the anode hanging body, one end of each insulating plastic connecting piece is fixed with the anode hanging body, and the other end of each insulating plastic connecting piece is fixed with the cathode hanging body; a second transverse plate is fixed to the bottom of the anode hanging piece, and connecting plates are fixed to the two ends of the second transverse plate; each auxiliary anode piece comprises a stud, a nut and a metal rod; the stud is in threaded connection with the connecting plate and is kept vertical; the nut sleeves the upper part of the stud; the metal rod is fixed to the bottom of the stud and shares the same axis with the stud. According to the device, a zinc coating in a hole of a part is uniform, and the anodic oxidation treatment effect of the part is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of metal surface treatment technology, specifically to a detachable zinc plating auxiliary anode tooling. Background Technology

[0002] Alkaline zinc plating is a widely used technology for surface treatment of various metals, playing a particularly important role in the automotive and electronics industries. This process primarily utilizes zincate plating solutions for electroplating, depositing zinc onto the metal surface through electrolytic reduction. This improves the metal's corrosion resistance and appearance quality. It is suitable for both rack and barrel zinc plating production, producing a soft, high-brightness coating that is easily passivated with chromate.

[0003] Due to the poor depth capability of alkaline zinc plating, it is difficult to obtain an ideal coating or even plating failure when encountering extremely complex products during the electroplating process, especially those with deep cavities, grooves, and low current areas. The only solution is to make auxiliary anodes. However, for more complex parts with deep cavities and grooves on various surfaces, it is difficult to install and remove the integrated auxiliary anode. Therefore, a detachable auxiliary anode tooling was designed.

[0004] The poor depth of alkaline zinc plating is mainly due to the following reasons:

[0005] From the perspective of the properties of the plating solution, alkaline zinc plating solution has a weak cathodic polarization. Cathodic polarization is crucial for the uniform deposition of metal ions on the surface of complex workpieces. The weak polarization makes it difficult for metal ions to obtain sufficient deposition momentum in deep recesses and other locations on the workpiece surface, resulting in these areas being difficult to be plated with zinc well.

[0006] In terms of dispersion ability, alkaline zinc plating solutions have limited dispersion capabilities. Dispersion ability refers to the ability of a plating solution to achieve a uniform distribution of the coating thickness on the surface of the workpiece. Alkaline plating solutions have difficulty ensuring a uniform distribution of zinc ions across various parts of workpieces with complex shapes, such as those with deep holes or crevices. Zinc ions do not easily penetrate these deeper areas, resulting in a thinner or even non-existent coating in these areas, thus exhibiting poor depth-deepening capability. Utility Model Content

[0007] The purpose of this invention is to provide a detachable zinc plating auxiliary anode tooling that ensures a uniform zinc plating layer inside the holes of the parts, thereby effectively guaranteeing the anodizing effect of the parts.

[0008] To achieve the above-mentioned objectives of this utility model, a detachable zinc plating auxiliary anode fixture is provided, comprising a cathode holder, an anode holder, and several auxiliary anode components.

[0009] The top of the cathode mount has a hook, and the cathode mount is hung on the cathode copper busbar through the hook;

[0010] The bottom of the cathode mount is fixed with a first horizontal plate, and the first horizontal plate is provided with a number of connecting bolts. The connecting bolts are used to connect the parts to be galvanized, and the position of the connecting bolts on the first horizontal plate is adapted to the connecting holes on the parts to be galvanized.

[0011] Several insulating plastic connectors are fixed on the anode mount, with one end of each connector fixed to the anode mount and the other end fixed to the cathode mount.

[0012] The bottom of the anode hanger is fixed with a second horizontal plate, and both ends of the second horizontal plate are fixed with connecting plates.

[0013] Several of the aforementioned auxiliary anode components include studs, nuts, and metal rods;

[0014] The stud is threaded onto the connecting plate and remains vertical;

[0015] The nut is fitted onto the upper part of the stud;

[0016] The metal rod is fixed to the bottom of the stud and shares the same axis with the stud.

[0017] Preferably, the insulating plastic connector is fixed to the anode mount and the cathode mount respectively by bolts.

[0018] Preferably, the second horizontal plate is provided with a plurality of long grooves evenly distributed therethrough, the long grooves penetrating the upper and lower surfaces of the second horizontal plate;

[0019] The stud passes through the corresponding long slot.

[0020] Preferably, the surfaces of the anode mount, cathode mount, stud, and nut are all coated with an insulating layer.

[0021] Preferably, each anode mount has a connection hole at its top, and the external anode is connected to the connection hole by a wire to achieve conductivity of the anode mount.

[0022] This utility model provides a detachable auxiliary anode tooling for galvanizing, which has the following advantages compared with the prior art:

[0023] (1) By designing an anode fixture, a detachable auxiliary anode component is set on the anode hanger of the anode fixture and corresponds one-to-one with the holes to be galvanized on the parts, which effectively ensures the uniformity of the galvanized layer of the parts after subsequent anodizing.

[0024] (2) Simple structure and easy to use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the connection between the anode and cathode in this embodiment;

[0026] Figure 2 This is a schematic diagram of the structure of a detachable zinc plating auxiliary anode tooling according to this embodiment. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the structure of a detachable zinc plating auxiliary anode tooling according to this embodiment. Figure 2 . Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] A detachable zinc plating auxiliary anode fixture includes a cathode holder 1, an anode holder 2, and several auxiliary anode components.

[0031] like Figure 1 As shown, the top of the cathode hanger 1 has a hook 3, and the cathode hanger 1 is hung on the cathode copper busbar through the hook 3; the bottom of the cathode hanger 1 is fixed with a first horizontal plate 4, and the first horizontal plate 4 is provided with a plurality of connecting bolts 5. The connecting bolts 5 are used to connect the parts to be galvanized, and the position of the connecting bolts 5 on the first horizontal plate 4 is adapted to the connecting holes on the parts to be galvanized.

[0032] A plurality of insulating plastic connectors 6 are fixed to the anode mount 2. One end of each insulating plastic connector 6 is fixed to the anode mount 2, and the other end is fixed to the cathode mount 1. In this embodiment, the insulating plastic connectors 6 are fixed to the anode mount 2 and the cathode mount 1 respectively by bolts, thereby achieving a detachable connection.

[0033] like Figure 2 As shown, a second horizontal plate 7 is fixed to the bottom of the anode hanger 2, and connecting plates 8 are fixed to both ends of the second horizontal plate 7; each of the auxiliary anode components includes a stud 9, a nut 10, and a metal rod 11; the stud 9 is threaded onto the connecting plate 8 and remains vertical; the nut 10 is sleeved on the upper part of the stud 9; the metal rod 11 is fixed to the bottom of the stud 9 and shares the same axis with the stud 9.

[0034] In this embodiment, as Figure 2 and Figure 3 As shown, the second horizontal plate 7 is provided with a plurality of long grooves 12 evenly, the long grooves 12 penetrating the upper and lower surfaces of the second horizontal plate 7; the stud 9 passes through the corresponding long groove 12; this arrangement can quickly and effectively adjust the position of the auxiliary anode component, better anodize the inner hole of the part, and form a zinc plating layer.

[0035] In this embodiment, the surfaces of the anode mount 2, cathode mount 1, stud 9, and nut 10 are all coated with an insulating layer to prevent zinc plating on the surfaces of the above-mentioned tooling during the anodizing of the parts.

[0036] In this embodiment, each of the anode mounts 2 has a connection hole 13 at its top. The external anode is connected to the connection hole 13 by a wire to achieve the conduction of the anode mount.

[0037] When anodizing the parts, the parts to be galvanized are first connected to the cathode hanger 1 by several connecting bolts 5. The position of the auxiliary anode component is adjusted on the long groove 12 of the anode hanger 2 and fixed by nuts 10, so that the metal rod 11 on the auxiliary anode component is inserted into the hole to be galvanized, and the inner wall of the hole is about 5-10 mm away from the metal rod. Then, the cathode hanger 1 is hung on the copper busbar, and the anode hanger 2 is connected to the external anode through wires to achieve conductivity. The parts are immersed in the solution for anodizing treatment.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A detachable auxiliary anode tooling for galvanizing, characterized in that, Includes cathode mounting, anode mounting, and several auxiliary anode components; The top of the cathode mount has a hook, and the cathode mount is hung on the cathode copper busbar through the hook; The bottom of the cathode mount is fixed with a first horizontal plate, and the first horizontal plate is provided with a number of connecting bolts. The connecting bolts are used to connect the parts to be galvanized, and the position of the connecting bolts on the first horizontal plate is adapted to the connecting holes on the parts to be galvanized. Several insulating plastic connectors are fixed on the anode mount, with one end of each connector fixed to the anode mount and the other end fixed to the cathode mount. The bottom of the anode hanger is fixed with a second horizontal plate, and both ends of the second horizontal plate are fixed with connecting plates. Several of the aforementioned auxiliary anode components include studs, nuts, and metal rods; The stud is threaded onto the connecting plate and remains vertical; The nut is fitted onto the upper part of the stud; The metal rod is fixed to the bottom of the stud and shares the same axis with the stud.

2. The detachable zinc plating auxiliary anode fixture according to claim 1, characterized in that, The insulating plastic connector is fixed to the anode and cathode mounts respectively by bolts.

3. The detachable zinc plating auxiliary anode fixture according to claim 1, characterized in that, The second horizontal plate is provided with a plurality of long grooves evenly distributed therethrough, the long grooves penetrating the upper and lower surfaces of the second horizontal plate; The stud passes through the corresponding long slot.

4. A detachable auxiliary anode fixture for galvanizing according to any one of claims 1 to 3, characterized in that, The surfaces of the anode mount, cathode mount, stud, and nut are all coated with an insulating layer.

5. A detachable auxiliary anode fixture for galvanizing according to any one of claims 1 to 3, characterized in that, Each anode mount has a connection hole at its top, and the external anode is connected to the connection hole by a wire to achieve conductivity of the anode mount.

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