Combined electroplating device for cavity type part with locally-silvered outer circle

Abstract

The utility model belongs to the technical field of electroplating devices, and relates to a combined type electroplating device for cavity type parts with locally-silvered excircles, which comprises a protective sleeve, a protective plug and a tool, the tool comprises a conductive contact piece, a bearing support and a main frame, the conductive contact piece is connected with the main frame, and the main frame is connected with the bearing support; the bearing support comprises a main shaft and supporting frames symmetrically connected to the two ends of the main shaft. The main shaft is vertically connected with the main frame, and the supporting frame is vertically connected with the main shaft and is parallel to the main frame; during use, a to-be-plated part is placed on the supporting frame, the protective sleeve is arranged on the middle outer circle face area of the to-be-plated part in a sleeving mode, and the protective plug is embedded into an upper end hole of the to-be-plated part. The mode of dip-coating peelable rubber for insulation protection is replaced, protection of the inner cavity and the middle outer circle face area of the cavity type outer circle local silver plating part is achieved, and local silver plating is conducted on the outer circle faces at the two ends.

Description

Technical Field

[0001] The utility model belongs to the technical field of electroplating devices, and in particular relates to a combined electroplating device for cavity-type outer circle partially silver-plated parts. Background Art

[0002] Before a part is partially silver-plated, the non-silver-plated area needs to be masked to achieve the purpose of local silver plating. Currently, peelable rubber containing volatile organic solvents (tetrachloroethylene) is often used as an insulation masking material. During insulation masking, the entire part needs to be dipped into a pool of peelable rubber liquid, and then dried and naturally air-dried to form a solid rubber protective film layer. After that, the film layer of the silver-plated area is manually peeled off with a blade to expose the silver-plated surface, thereby achieving the purpose of insulation masking of the non-silver-plated area. However, the long-term use of peelable rubber will cause a large amount of organic gas emissions, posing certain environmental risks.

[0003] for example Figure 1 The cavity-type outer circle partially silver-plated parts shown in the figure only need to be silver-plated on the two end areas of the outer circle of the part, and the middle area and the inner cavity do not need to be silver-plated. The current implementation method is to dip the part into a peelable rubber liquid pool. It usually takes a long time (generally more than 8 hours) for the liquid rubber to dry and naturally air-dry to form a peelable solid protective film layer. Only after that can the peeling process be carried out. In addition, the peeling process requires manual cutting with a blade, which can easily cause scratches on the surface of the part and local debonding of the cut protective surface. Therefore, manual scratch repair and repair of the debonding area are also required. The repair is done by manually applying peelable rubber to the cracked area with a brush. Since the bonding strength between the paint in the repaired area and the dipped paint cannot be guaranteed, the rubber is prone to cracking in the subsequent electroplating process, and ultimately an irregular and poorly bonded silver layer appears in the non-silver-plated area.

[0004] After completing the insulation shielding of the non-silver-plated area, the workpiece is manually tied and hung on a hook for silver plating. Due to the weight of the parts, the conductive contact parts at the lower end will be affected by gravity and will produce marks. These marks are mostly located on the silver-plated end face, resulting in poor silver plating quality on the silver-plated surface, which directly affects the pass rate of the parts in one inspection. Utility Model Content

[0005] The purpose of the utility model is to provide a combined electroplating device for partially silver-plated outer-circle parts of cavity-type parts, which solves the problems of long production cycle, poor silver plating quality, low pass rate, etc. in the existing silver plating method using an insulating shielding method.

[0006] The utility model is realized through the following technical solutions:

[0007] A combined electroplating device for partially silver-plated outer-circle parts of cavity-type parts, comprising a protective sleeve, a protective plug and a tooling;

[0008] The tooling includes a conductive contact piece, a load-bearing bracket and a main frame, wherein the conductive contact piece is connected to the main frame, and the main frame is connected to the load-bearing bracket;

[0009] The bearing bracket includes a main shaft and support frames symmetrically connected to both ends of the main shaft;

[0010] The main shaft is vertically connected to the main frame, the support frame is vertically connected to the main shaft, and the support frame is arranged parallel to the main frame;

[0011] When in use, the part to be plated is placed on the support frame, the protective sleeve is set on the middle outer cylindrical surface area of the part to be plated, and the protective plug is embedded in the upper end hole of the part to be plated.

[0012] Furthermore, the conductive contact piece includes a connecting section and a conductive end, and the conductive end is a conductive contact portion connected to the copper conductive beam.

[0013] Further, the support frame includes a central pole and a tripod;

[0014] The main shaft is vertically connected to the main frame, the center rod is vertically connected to the main shaft, the center rod is parallel to the main frame, and the end of the center rod is directed toward the conductive contact piece.

[0015] Furthermore, the tripod includes three support rods, and the angles between the support rods and the main axis and the angle between the center rod and the main axis are designed according to the inner diameter of the part to be plated.

[0016] Furthermore, the protective sleeve is an internal hollow tube, and the diameters of the two ends of the protective sleeve are smaller than the diameter of the middle portion.

[0017] Furthermore, the protective cover is made of EPDM rubber or latex.

[0018] Furthermore, the protective plug is a cone.

[0019] Furthermore, the middle section of the cone is designed to fit tightly according to the inner diameter of the part to be plated, the diameter of the upper end of the cone is larger than the diameter of the middle section, and the diameter of the lower end is smaller than the diameter of the middle section.

[0020] Furthermore, the conductive contact portion includes a spring sheet and a top screw, which are clamped and fixed to the copper conductive beam through the cooperation of the spring sheet and the top screw.

[0021] Furthermore, the tooling is welded from stainless steel.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] The utility model discloses a combined electroplating device for partially silver-plated parts with a cavity-like outer circle. During the silver plating process, a protective sleeve, a protective plug and a tooling are combined to replace the method of dipping peelable rubber for insulation protection, thereby protecting the inner cavity and the middle outer circle area of the cavity-like partially silver-plated parts, and partially silver-plating the outer circle surfaces at both ends. In the electroplating of partially silver-plated parts, a tooling is used instead of the aluminum wire bundling method to suspend the parts and conduct electricity, which will not produce marks and has high silver plating quality; the parts to be plated are placed on a support frame, which is arranged parallel to the main frame and vertically connected to the main shaft, so as to ensure the vertical state of the parts, support the use of air pockets during the electroplating process, and realize material-free protection of the inner cavity. This method abandons the traditional thinking and application mode of using insulating protective materials for shielding, and diversifies the electroplating protection mode. This combined electroplating device is easy to operate, can achieve rapid production, and meets the development needs of enterprises.

[0024] Furthermore, the support frame adopts a tripod design. The triangular support is more stable and avoids the problem of tipping. In addition, the weight of the parts themselves ensures that the parts can be vertically and firmly placed on the support frame during the electroplating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the cavity-like outer circle partially silver-plated parts;

[0026] Figure 2 This is a schematic structural diagram of a combined electroplating device for partially silver-plating a cavity-like outer circular part of the present invention;

[0027] Figure 3 It is a structural diagram of the tooling;

[0028] Figure 4 Schematic diagram of the structure of the protective cover;

[0029] Figure 5 It is a structural diagram of the protective plug;

[0030] Figure 6 is a schematic structural diagram of a conductive contact;

[0031] Figure 7 It is a structural diagram of the supporting bracket part;

[0032] Among them, 1. Protective cover; 2. Protective plug; 3. Tooling; 4. Parts to be plated;

[0033] 11. End; 12. Middle;

[0034] 31. Conductive contact; 32. Load-bearing bracket; 33. Main frame;

[0035] 311. Spring sheet; 312. Top screw;

[0036] 321, main axis; 322, tripod; 323, center rod;

[0037] 21. Middle section; 22. Upper end; 23. Lower end. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following is a further detailed description with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. That is, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0039] The components described and illustrated in the drawings and embodiments of the present invention may be arranged and designed in a variety of different configurations. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely represents a selected embodiment of the present invention. All other embodiments derived by those skilled in the art based on the drawings and embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, element, method, article, or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or also includes elements inherent to the process, element, method, article, or device. In addition, the terms "horizontal" and "vertical" are based on the orientation and positional relationship of the devices or components shown in the drawings, and are only for the purpose of better describing the present invention, rather than requiring that the devices, components, or devices shown must have such a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0041] The features and performance of the present invention are further described in detail below with reference to the embodiments.

[0042] like Figure 2 As shown, the utility model discloses a combined electroplating device for partially silver-plating outer-circle parts of cavity-type parts, comprising a protective cover 1, a protective plug 2 and a tool 3.

[0043] like Figure 3 As shown, the overall frame of the tooling 3 is welded, and mainly includes a conductive contact 31, a supporting bracket 32 and a main frame 33;

[0044] The conductive contact member 31 is connected to the main frame 33. The supporting frame 32 includes a main shaft 321 and support frames symmetrically connected to both ends of the main shaft 321. The support frame includes a central rod 323 and a tripod 322.

[0045] The conductive contact member 31 includes a connecting section and a conductive end, wherein the conductive end is a conductive contact portion connected to the copper conductive beam.

[0046] Specifically, the main shaft 321 is connected perpendicularly to the main frame 33, the center rod 323 is connected perpendicularly to the main shaft 321, the center rod 323 is arranged parallel to the main frame 33, and the center rod 323 extends toward the conductive contact 31. This ensures that the cavity-like outer circular partially silver-plated parts installed on the tooling 3 are all arranged vertically and will not tilt.

[0047] During use, the part 4 to be plated is passed through the support frame, the protective cover 1 is sleeved on the outer circumferential area of the middle portion 12 of the part 4 to be plated, and the protective plug 2 is embedded in the upper end hole of the part 4 to be plated.

[0048] like Figure 4 As shown, the protective sleeve 1 is hollow. The two ends 11 are designed to fit tightly to the dimensions of the junction between the non-silver-plated and silver-plated areas of the component, while the middle portion 12 is designed to be looser based on the shape of the component. The dimensions of the ends 11 are calculated based on factors such as the component's outer diameter and the deformation ratio of the protective sleeve 1.

[0049] The material of the protective cover 1 is preferably EPDM rubber or latex, because it is not only acid and alkali resistant and can meet the requirements of good insulation protection of non-silver-plated areas during the electroplating process, but also has relatively good installation and disassembly advantages.

[0050] like Figure 5 As shown, the protective plug 2 is a cone, and the middle section 21 of the cone is designed to fit tightly according to the inner diameter of the part. The upper end 22 is appropriately larger than the middle section 21, and the lower end 23 is appropriately smaller than the middle section 21. The height is determined based on the specific part size to ensure sealing and easy disassembly.

[0051] like Figure 6 As shown, the conductive contact portion includes a spring piece 311 and a top screw 312 . After the tooling 3 is hung on the copper conductive beam, it is clamped and fixed by the cooperation of the spring piece 311 and the top screw 312 .

[0052] The number of the supporting brackets 32 of the tooling 3 is designed and manufactured according to factors such as the size of the part 4 to be plated, the silver plating area, the anode plate area and the plating tank size.

[0053] Tooling 3 is welded with stainless steel, and the conductive contact parts with the copper conductive beam are made of copper to maximize its conductivity.

[0054] Except for the contact parts with the copper conductive beam and the tripod 322, the rest of the tooling 3 is subjected to one-time insulation and anti-corrosion protection to isolate it from the electroplating solution.

[0055] like Figure 7As shown, the tripod 322 is designed with three support rods, and the angles between the support rods and the main shaft 321 and the angle between the center rod 323 are designed and manufactured according to the inner diameter size of the part 4 to be plated.

[0056] The tooling 3 in this combined electroplating device, except for the conductive contact parts with the copper conductive beam, the support between the lower end of the part to be plated 4 and the supporting bracket 32, and the local conductive area of the tripod 322, is all insulated and anti-corrosion protected at one time, reducing the waste of main materials.

[0057] This combined device is suitable for tube conductor parts with partially silver-plated outer circumference. Figure 1 The parts shown are used as an example for explanation.

[0058] In the electroplating of such parts, after the protective cover 1 is combined with the part to be plated 4, the elasticity of the rubber itself is relied upon to achieve a tight fit between the protective cover 1 and the part to be plated 4, thereby avoiding leakage of the solution during the electroplating process.

[0059] The protective plug 2 is preferably made of rubber because it is not only acid and alkali resistant but also has a certain elasticity, which can meet the requirements of blocking the inner cavity during the electroplating process and prevent the leakage of the solution. The protective cover 1 realizes the insulation protection of the non-silver-plated area of the outer circle of the plated part 4.

[0060] The protective plug 2 is embedded into the upper end hole of the part to be plated 4. After the part to be plated 4 with the protective cover 1 and the protective plug 2 is installed on the supporting bracket 32 of the tooling 3, the tooling 3 is immersed in the electroplating solution. The air pockets during the electroplating process are used to protect the inner cavity of the part to be plated 4.

[0061] The combined electroplating device designed in this utility model utilizes a protective cover 1, a protective plug 2, and a tooling 3 to achieve clean and efficient production of such parts. The protective cover 1, protective plug 2, and tooling 3 in this combined electroplating device are all reusable. The protective cover 1 and protective plug 2 can be reused after a single use without requiring further treatment. The tooling 3 only requires treatment of the silver layer on the conductive contact areas before reuse.

[0062] The protective sleeve 1, protective plug 2, and cavity air trapping principle employed in this combined electroplating device utilize air traps during the electroplating process to achieve material-free protection of the component's internal cavity. This approach abandons the traditional approach and application of shielding with insulating protective materials, diversifying electroplating protection options. It replaces the existing method of using peelable rubber containing volatile organic solvents to protect non-silver-plated areas, avoiding atmospheric pollution while also avoiding issues such as errors in the silver-plated area, scratches on the component surface, and partial delamination of the protective surface caused by manual peeling.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A combined electroplating device for partially silver-plated outer-circle parts of cavity-type parts, characterized in that: It comprises a protective cover (1), a protective plug (2) and a tool (3); The tooling (3) comprises a conductive contact piece (31), a supporting bracket (32) and a main frame (33), wherein the conductive contact piece (31) is connected to the main frame (33), and the main frame (33) is connected to the supporting bracket (32); The bearing bracket (32) includes a main shaft (321) and support brackets symmetrically connected to both ends of the main shaft (321); The main shaft (321) is vertically connected to the main frame (33), the support frame is vertically connected to the main shaft (321), and the support frame is arranged in parallel with the main frame (33); When in use, the part to be plated (4) is placed on the support frame, the protective sleeve (1) is sleeved on the outer circumferential surface area of the middle part (12) of the part to be plated (4), and the protective plug (2) is embedded in the upper end hole of the part to be plated (4).

2. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 1, characterized in that: The conductive contact piece (31) comprises a connecting section and a conductive end, wherein the conductive end is a conductive contact portion connected to the copper conductive beam.

3. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 1, characterized in that: The support frame includes a central rod (323) and a tripod (322); The main shaft (321) is vertically connected to the main frame (33), the center rod (323) is vertically connected to the main shaft (321), the center rod (323) is arranged in parallel with the main frame (33), and the end of the center rod (323) is directed toward the conductive contact piece (31).

4. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 3, characterized in that: The tripod (322) includes three support rods, and the angles between the support rods and the main shaft (321) and the angle between the center rod (323) are designed according to the inner diameter of the part to be plated (4).

5. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 1, characterized in that: The protective sleeve (1) is an internal hollow tube, and the diameters of the two end portions (11) of the protective sleeve (1) are smaller than the diameter of the middle portion (12).

6. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 1, characterized in that: The material of the protective cover (1) is EPDM or latex.

7. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 1, characterized in that: The protection plug (2) is a cone.

8. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 7, characterized in that: The middle section (21) of the cone is designed to fit tightly according to the inner diameter of the part to be plated (4); the diameter of the upper end (22) of the cone is larger than that of the middle section (21), and the diameter of the lower end (23) is smaller than that of the middle section (21).

9. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 1, characterized in that: The conductive contact portion comprises a spring sheet (311) and a top screw (312), and is clamped and fixed to the copper conductive beam through the cooperation of the spring sheet (311) and the top screw (312).

10. The combined electroplating device for partially silver-plated outer-circle parts of cavity-like parts according to claim 1, characterized in that: The tooling (3) is made of stainless steel and welded together.

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