Electroplating hanger

Abstract

The invention discloses an electroplating hanging tool which comprises a top outer ring, a bottom outer ring, an outer ring stand column, an inner ring, an inner ring stand column, an insulation connecting column, a negative electrode power connection hook, an auxiliary positive electrode power connection piece, a main negative electrode, an auxiliary positive electrode and an insulation hanging strip. The main negative electrode can play a role in ions in the electroplating bath, so that the metal electroplating material in the electroplating bath is electroplated on the outer surface and the inner hole surface of a workpiece, the auxiliary positive electrode can accelerate the ions to be reduced to the inner hole surface of the workpiece, and the hanger can assist the workpiece in electroplating operation of accurately controlling the thickness of an inner film and an outer film. In addition, the main negative electrode and the auxiliary positive electrode are integrated on the same hanger, but the main negative electrode and the auxiliary positive electrode are ingeniously insulated, so that short circuit of the positive electrode and the negative electrode on the same hanger can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electroplating, and more particularly to an electroplating rack. Background Art

[0002] In the processing of some metal workpieces (such as female connectors with inner holes or various other pipes with inner cavities or inner holes), it is often necessary to electroplate the surface to meet the corresponding conductive performance requirements.

[0003] In the current electroplating process, the workpiece to be electroplated can be placed in the electroplating tank for electroplating by using a hanger. The ordinary hanger has only one negative pole (i.e., cathode). When connecting, the negative pole of the power supply can be connected to the negative pole of the hanger, and the positive pole of the power supply can be connected to the positive pole (i.e., anode) of the electroplating tank. During the electroplating process, the flow direction and time of ions are limited by the direction and distance of the single positive and negative poles, which will cause the ions to be uneven on the outer surface and inner hole surface of the workpiece, resulting in uneven film thickness of the inner and outer coatings of the workpiece, making it difficult to control the film thickness ratio of the inner and outer coatings. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide an electroplating rack that can assist in electroplating workpieces with precise control of the inner and outer film thickness.

[0005] To achieve the above-mentioned purpose, the present invention provides an electroplating rack, comprising a top outer ring, a bottom outer ring, an outer ring column, an inner ring, an inner ring column, an insulating connecting column, a negative electrode power hook, an auxiliary positive electrode connection piece, a main negative electrode, an auxiliary positive electrode and an insulating hanging bar, wherein the bottom outer ring is located below the top outer ring and is connected to the top outer ring through a plurality of evenly arranged outer ring columns, the bottom outer ring and the top outer ring are both located outside the inner ring, the inner ring is provided with a plurality of and are spaced apart from each other from top to bottom, and all inner rings are evenly arranged. The inner ring columns are connected, the top outer ring is connected to the inner ring at the top through an insulating connecting column, and the bottom outer ring is connected to the inner ring at the bottom through an insulating connecting column. The negative electrode power hook is installed on the inner ring at the top, and the auxiliary positive electrode power connection piece is installed on the top outer ring. The auxiliary positive electrode and the insulating hanging bar are respectively installed on the same side of each outer ring column. The main negative electrode is evenly installed on the outer edge of the inner ring, and the end of each main negative electrode extends to one side of the end of the corresponding auxiliary positive electrode and the insulating hanging bar.

[0006] Preferably, the insulating connecting column is configured as a ceramic rod.

[0007] Preferably, the exteriors of the top outer ring, the bottom outer ring, the outer ring columns, the inner ring, the inner ring columns, the insulating connecting columns and the insulating hanging strips are all provided with insulating resin.

[0008] Preferably, the end of the main negative electrode is exposed and the remaining external positions are provided with insulating resin.

[0009] Preferably, the end of the auxiliary positive electrode is exposed and the remaining external positions are provided with insulating resin.

[0010] Preferably, the insulating resin is epoxy resin.

[0011] Preferably, the auxiliary positive electrode and the insulating hanging bar are parallel to each other, and the main negative electrode is arranged in an L-shaped structure.

[0012] Preferably, the auxiliary positive electrode is pre-electroplated with a metal having the same material as the plating layer of the electroplated workpiece.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The hanger of the present invention adopts a cage-hanging structure and is provided with a top outer ring, a bottom outer ring, an outer ring column, an inner ring, an inner ring column, an insulating connecting column, a negative electrode power connection hook, an auxiliary positive electrode power connection part, a main negative electrode, an auxiliary positive electrode and an insulating hanging bar. The workpiece to be electroplated can be hung on the insulating hanging bar, the auxiliary positive electrode can extend into the inner hole of the workpiece without contacting the workpiece to be electroplated, and the main negative electrode can contact the workpiece. When the hanger is respectively connected to the main power supply and the auxiliary power supply, the main negative electrode can act on the ions in the electroplating tank, so that the metal plating material in the electroplating tank is electroplated on the outer surface and inner hole surface of the workpiece, and the auxiliary positive electrode can accelerate the reduction of ions to the inner hole surface of the workpiece. The hanger can assist the workpiece in electroplating operations with precise control of the inner and outer film thickness.

[0015] 2. The main negative electrode and the auxiliary positive electrode of the present invention are both integrated on one hanger, but a clever insulation design is used between the two, which can avoid short circuit between the positive and negative poles on the same hanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 Schematic diagram of the structure of the electroplating rack provided by an embodiment of the present invention;

[0018] Figure 2 is a top view of an electroplating rack provided by an embodiment of the present invention;

[0019] Figure 3 This is an enlarged view of a partial structure of an electroplating rack provided by an embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of the mounting of an electroplating workpiece and an electroplating hanger provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] Please refer to Figure 1 、 Figure 2 and Figure 3 An embodiment of the present invention provides an electroplating rack, including a top outer ring 11, a bottom outer ring 12, an outer ring column 13, an inner ring 14, an inner ring column 15, an insulating connecting column 16, a negative electrode power connection hook 17, an auxiliary positive electrode power connection part 18, a main negative electrode 19, an auxiliary positive electrode 110 and an insulating hanging bar 111. The following is a detailed description of the various components of this embodiment with reference to the accompanying drawings.

[0023] like Figure 1 As shown, the bottom outer ring 12 is located below the top outer ring 11 and is connected to the top outer ring 11 through a plurality of evenly arranged and longitudinally arranged outer ring columns 13. Both the bottom outer ring 12 and the top outer ring 11 are located outside the inner ring 14. Both the bottom outer ring 12 and the top outer ring 11 can be configured in a circular ring shape.

[0024] like Figure 1 As shown, there are a plurality of inner rings 14 arranged in a sequentially spaced order from top to bottom, and all inner rings 14 are connected by evenly arranged and longitudinally arranged inner ring columns 15. The inner rings 14 can be configured in a circular ring shape, and the diameter of the inner ring 14 is smaller than the diameters of the top outer ring 11 and the bottom outer ring 12.

[0025] like Figure 1 and Figure 2 As shown, the top outer ring 11 is connected to the top inner ring 14 via insulating connecting posts 16, and the bottom outer ring 12 is connected to the bottom inner ring 14 via insulating connecting posts 16. In this embodiment, the insulating connecting posts 16 are preferably ceramic rods, which provide good insulation. Of course, connecting posts made of other insulating materials can also be used according to actual needs.

[0026] In this embodiment, the main negative electrode and the auxiliary positive electrode are integrated into one hanger, but an ingenious insulation design is used between the two, which can avoid short circuit between the positive and negative electrodes on the same hanger.

[0027] like Figure 1 As shown, the negative pole connection hook 17 is installed on the inner ring 14 at the top, and the auxiliary positive pole connection piece 18 is installed on the top outer ring 11.

[0028] like Figure 1 and Figure 3 As shown, the auxiliary positive electrode 110 and the insulating hanging bar 111 are respectively installed parallel to each other on the same side of each outer ring column 13, and each outer ring column 13 can be provided with several groups of auxiliary positive electrodes 110 and insulating hanging bars 111.

[0029] like Figure 1 and Figure 3 As shown, the main negative electrodes 19 are evenly installed on the outer edge of the inner ring 14, and the ends of each main negative electrode 19 extend to one side of the ends of the corresponding auxiliary positive electrode 110 and the insulating hanging bar 111. The main negative electrodes 19 can preferably be arranged in an L-shaped structure.

[0030] In this embodiment, the top outer ring 11, bottom outer ring 12, outer ring column 13, inner ring 14, inner ring column 15, negative electrode connection hook 17, auxiliary positive electrode connection piece 18, main negative electrode 19, and auxiliary positive electrode 110 can all be made of conductive metal materials. The top outer ring 11, bottom outer ring 12, outer ring column 13, inner ring 14, inner ring column 15, insulating connecting column 16, and insulating hanging bar 111 can all be coated with insulating resin. The end of the main negative electrode 19 is exposed, and the remaining external locations can be coated with insulating resin. The end of the auxiliary positive electrode 110 is exposed, and the remaining external locations can be coated with insulating resin. In specific implementations, the insulating resin can preferably be set as epoxy resin or other insulating coatings.

[0031] As a further improvement of this embodiment, the auxiliary positive electrode 110 can also be pre-electroplated with a metal that is the same as the plating material of the workpiece. For example, if the workpiece needs to be nickel-plated, a nickel layer can be pre-electroplated at the end of the auxiliary positive electrode 110, which can speed up the electroplating speed.

[0032] Before electroplating, the workpiece needs to be mounted on the electroplating rack. Specifically, Figure 4 As shown, the insulating hanging bar 111 of the hanger can be inserted into the inner hole 21 of the workpiece 2 to be electroplated, so that the workpiece to be electroplated is hung on the insulating hanging bar of the hanger, and at the same time, the auxiliary positive electrode 110 of the hanger is inserted into the inner hole 21 of the workpiece 2 to be electroplated without contacting the workpiece to be electroplated, and the main negative electrode 19 of the hanger is in contact with the workpiece 2 to be electroplated.

[0033] During electroplating, the mounted workpiece to be electroplated and the hanger are placed together in the electroplating tank, the positive pole of the main power supply is connected to the positive pole of the electroplating tank, the negative pole of the main power supply is connected to the main negative pole 19 of the hanger, the positive pole of the auxiliary power supply is connected to the auxiliary positive pole 110 of the hanger, and the negative pole of the auxiliary power supply is connected to the main negative pole 19 of the hanger. Then, the main power supply and the auxiliary power supply are controlled to supply power at the same time. The main negative pole 19 can act on the ions in the electroplating tank, so that the metal plating material in the electroplating tank is electroplated on the outer surface and inner hole surface of the workpiece, and the auxiliary positive pole 110 can accelerate the reduction of ions to the inner hole surface of the workpiece.

[0034] When connecting the power, the negative pole power hook 17 of the hanger can be connected to the negative pole of the main power supply and the negative pole of the auxiliary power supply. The negative pole power hook 17 is connected to the main negative pole 19 through the inner ring 14 and the inner ring column 15. The auxiliary positive pole power connection part 18 can be connected to the positive pole of the auxiliary power supply. The auxiliary positive pole power connection part 18 is connected to the auxiliary positive pole 110 through the top outer ring 11 and the outer ring column 13.

[0035] In summary, the hanger of the present invention adopts a cage-hanging structure, which can assist in the electroplating operation of the workpiece with precise control of the inner and outer film thickness.

[0036] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. An electroplating rack, characterized in that: It includes a top outer ring, a bottom outer ring, an outer ring column, an inner ring, an inner ring column, an insulating connecting column, a negative pole power connection hook, an auxiliary positive pole power connection piece, a main negative pole, an auxiliary positive pole and an insulating hanging strip. The bottom outer ring is located below the top outer ring and is connected to the top outer ring through a plurality of evenly arranged outer ring columns. The bottom outer ring and the top outer ring are both located outside the inner ring. The inner ring is provided with a plurality of columns and is arranged in sequence from top to bottom. All inner rings are connected through evenly arranged inner ring columns. The top outer ring is connected to the inner ring at the top through an insulating connecting column. The bottom outer ring is connected to the inner ring at the bottom through an insulating connecting column. The negative pole power connection hook is installed on the inner ring at the top. The auxiliary positive pole power connection piece is installed on the top outer ring. The auxiliary positive pole and the insulating hanging strip are respectively installed on the same side of each outer ring column. The main negative pole is evenly installed on the outer edge of the inner ring. The end of each main negative pole extends to one side of the end of the corresponding auxiliary positive pole and the insulating hanging strip.

2. The electroplating rack according to claim 1, characterized in that: The insulating connecting column is configured as a ceramic rod.

3. The electroplating rack according to claim 1, characterized in that: The outsides of the top outer ring, the bottom outer ring, the outer ring columns, the inner ring, the inner ring columns, the insulating connecting columns and the insulating hanging strips are all provided with insulating resin.

4. The electroplating rack according to claim 1, characterized in that: The end of the main negative electrode is exposed and the remaining external positions are provided with insulating resin.

5. The electroplating rack according to claim 1, characterized in that: The end of the auxiliary positive electrode is exposed and the remaining external positions are provided with insulating resin.

6. The electroplating rack according to claim 1, 4 or 5, characterized in that: The insulating resin is configured as epoxy resin.

7. The electroplating rack according to claim 1, characterized in that: The auxiliary positive electrode and the insulating hanging bar are parallel to each other, and the main negative electrode is arranged in an L-shaped structure.

8. The electroplating rack according to claim 1, characterized in that: The auxiliary positive electrode is pre-electroplated with a metal having the same material as the coating of the electroplated workpiece.

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