Local silver stripping and plating protection tool for complex shell part

Abstract

According to the local silver stripping and plating protection tool for the complex shell part, the through holes are evenly formed in the two pressing covers, and the through holes of the top cover are in central symmetry, so that sufficient fluidity of stripping liquid is guaranteed, and uniform stripping of a workpiece is achieved. The problems that in the prior art, consumed time is long, cost is high, and product quality cannot be guaranteed are solved. The device is simple in structure, good in sealing performance, easy to assemble and disassemble and good in solution flowability, the working time is shortened to 3-4 hours from 6 hours, and the working efficiency is improved by 1.5-2 times. The end faces of the two pressing covers apply pressing force to the rubber gasket, so that the adverse effects of peeling, blistering and the like caused by poor binding force of a silver layer at a boundary of a gluing area are prevented, the qualified rate of local electrosilvering of the shell is increased from 70% to more than 95%, and the problems of reworking and repairing caused by a traditional gluing process are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of local electrosilver plating, and in particular relates to a local silver stripping protective tooling for complex shell parts. Background Art

[0002] like Figure 8 As shown, a certain complex shell-like part is in the shape of a disk, and from the outer ring to the inner ring are a shell 14, an annular groove 15 and a hollow cylinder 16; there are two annular grooves 15, which are respectively arranged on the inner and outer end surfaces of the part; a plurality of through holes are arranged at the bottom of the annular groove 15, and annular grooves 15 are arranged on the inner and outer end surfaces of the through hole; a central through hole is arranged at the center of the hollow cylinder 16;

[0003] Due to the process requirements, it is necessary to perform partial silver plating on the annular grooves 15 on the inner and outer end surfaces of the parts. Figure 8 After the remaining parts of the part other than the inner and outer end surfaces of the annular groove 15 are coated with glue for protection, the entire complex shell-type part is electroplated and then the glue layer is removed. This process method is time-consuming, may cause uneven color of the coating, and is prone to peeling and blistering of the coating at the boundary line of the glue-coated area; in terms of operating methods, the process requires peeling off the glue layer after the electroplating is completed, so the peeling process often encounters problems of difficult or unclean peeling. The above-mentioned problems will cause waste of manpower, increase costs and increase the time consumption of the process, ultimately affecting product quality. Utility Model Content

[0004] The utility model aims to solve the problems of the prior art that the prior art is time-consuming, costly and cannot guarantee product quality, and for this purpose provides a local silver-plating protection tooling for complex shell parts.

[0005] To achieve the above purpose, the technical solution provided by the utility model is:

[0006] A local silver stripping protection tool for complex shell parts, which is special in that:

[0007] It includes a first pressure cover, a second pressure cover, a nut and a rubber gasket;

[0008] The first pressure cover is a first hollow cylinder, a plurality of first through holes are arranged on the side of the first hollow cylinder, a central through hole and a plurality of second through holes are arranged on the top end surface of the first hollow cylinder; the bottom end surface of the first hollow cylinder is an annular surface, and is adapted to the annular groove on the outer end surface of the complex shell-like part;

[0009] The second pressure cover comprises a second hollow cylinder and a screw; a plurality of third through holes are arranged on the side of the second hollow cylinder; the two ends of the second hollow cylinder are a top cover end and a pressing end respectively, a plurality of fourth through holes are arranged on the end surface of the top cover end, and the end surface of the pressing end is an annular surface and is adapted to the annular groove on the inner end surface of the complex shell-like part;

[0010] The screw is vertically arranged at the center of the inner side of the top cover end of the second hollow cylinder and is located in the second hollow cylinder; the length of the screw is greater than the sum of the height of the first pressure cover, the height of the second pressure cover and the distance between the two end faces of the annular groove; the diameter of the screw is smaller than the diameter of the central through hole of the first pressure cover, the screw passes through the second hollow cylinder and the first pressure cover, and its end protrudes from the central through hole of the top end face of the first pressure cover;

[0011] The end of the screw rod is matched with the nut, and the end face size of the nut is larger than the outer diameter of the central through hole of the first pressure cover;

[0012] The rubber gasket includes an upper rubber gasket and a lower rubber gasket,

[0013] The upper rubber gasket cooperates with the annular groove on the outer end surface of the complex shell-like parts, and the lower rubber gasket cooperates with the annular groove on the inner end surface of the complex shell-like parts. The upper rubber gasket and the lower rubber gasket are respectively pressed by the bottom end surface of the first pressure cover and the pressing end of the second pressure cover in the annular grooves on the outer end surface and inner end surface of the complex shell-like parts.

[0014] Furthermore, the first through holes on the side surface of the first pressure cover are evenly distributed along the circumferential direction, and the third through holes on the side surface of the second hollow cylinder are evenly distributed along the circumferential direction.

[0015] Furthermore, the first through hole and the third through hole are both bar-shaped through holes whose length direction is consistent with the height direction of the cylinder.

[0016] Furthermore, two adjacent ones of the plurality of second through holes are arranged symmetrically with respect to the diameter of the bottom surface of the cylinder, and all the second through holes are evenly distributed;

[0017] The fourth through holes are evenly distributed along the same circumference.

[0018] Preferably, the nut is a butterfly nut.

[0019] The concept of the present invention:

[0020] In order to reduce the workload of applying glue protection and peeling the glue layer, the technicians thought of first Figure 8 After the entire complex shell-like part shown is silver-plated as a whole, the annular grooves 15 on the inner and outer end surfaces of the part are protected and pressed, and finally the rest of the entire complex shell-like part is partially and precisely de-silvered.

[0021] Although this adds a silver-plating de-plating process, it saves a lot of time and energy spent on gluing, peeling off the glue layer and checking whether it is peeled off cleanly, thus ensuring product quality; at the same time, the two pressure covers can be quickly disassembled and assembled through butterfly nuts without gluing, which has low cost, shortens the time of the overall process, and improves the efficiency of local silver plating of complex shell parts.

[0022] The advantages of the utility model are:

[0023] 1. The utility model ensures sufficient fluidity of the deplating liquid and realizes uniform deplating of the workpiece by evenly arranging multiple through holes on the two pressure covers, and the multiple through holes of the top cover are symmetrical along the center.

[0024] 2. The utility model has a simple structure, good sealing, easy loading and unloading, and good solution fluidity, and can realize local precise silver stripping operation, reducing the working hours from 6 hours to 3-4 hours, and improving the working efficiency by 1.5-2 times.

[0025] 3. The utility model applies a pressing force to the rubber gasket through two pressure covers to respectively compress and protect the annular grooves on the inner and outer end surfaces of complex shell parts, thereby avoiding the peeling and blistering caused by the poor bonding force of the silver layer at the boundary line of the glue coating area caused by the traditional method of local glue coating protection followed by electroplating and then removing the glue layer, thereby increasing the qualified rate of local silver plating of the shell from 70% to more than 95%, reducing the rework and repair problems caused by the traditional glue coating protection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the assembly structure of each component of this tooling;

[0027] Figure 2 It is the axonometric view of the first pressure cover;

[0028] Figure 3 Axonometric drawing of the first pressure cover

[0029] Figure 4 This is the axonometric view of the second pressure cover;

[0030] Figure 5 This is the axonometric view of the second pressure cover;

[0031] Figure 6 It is a schematic diagram of the butterfly nut structure;

[0032] Figure 7 It is the side view of butterfly nut;

[0033] Figure 8 It is a top view of some complex shell;

[0034] Fig. 9 This is a schematic diagram of the installation of the local silver stripping protection tooling;

[0035] Fig.10 This is a schematic diagram of the installation of local silver stripping protection tooling.

[0036] Reference numerals:

[0037] 1-first pressure cover; 2-second pressure cover; 3-screw; 4-nut; 5-upper rubber gasket; 6-lower rubber gasket; 7-first through hole; 8-center through hole; 9-second through hole; 10-third through hole; 11-top cover end; 12-pressing end; 13-fourth through hole; 14-housing; 15-annular groove; 16-hollow cylinder; 17-top end surface; 18-bottom end surface. DETAILED DESCRIPTION

[0038] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments:

[0039] like Figure 1 to Figure 7 The illustrated tooling for local silver stripping protection of complex shell parts comprises a first pressure cover 1, a second pressure cover 2, a butterfly nut 4, an upper rubber gasket 5 and a lower rubber gasket 6.

[0040] like Figure 2 to Figure 5 The first pressure cover 1 and the second pressure cover 2 shown;

[0041] like Figure 2 , Figure 3 As shown, the first pressure cover 1 is a first hollow cylinder; a plurality of first through holes 7 for the flow of the deplating liquid are provided on the side of the first hollow cylinder, preferably, all the first through holes are strip-shaped through holes uniformly distributed on the side of the first hollow cylinder along the circumferential direction, and the length direction is consistent with the height direction of the cylinder, so that the flow effect of the deplating liquid is better;

[0042] A central through hole 8 and a plurality of second through holes 9 for the flow of the deplating liquid are provided on the top surface 17 of the first hollow cylinder; preferably, two adjacent second through holes are arranged symmetrically with respect to the diameter of the bottom surface of the cylinder, and all the second through holes are evenly distributed, so that the flow effect of the deplating liquid is better;

[0043] The bottom end surface 18 of the first hollow cylinder is an annular surface, and is matched with the annular groove 15 on the outer end surface of the complex shell.

[0044] like Figure 4 , Figure 5 As shown, the second pressure cover 2 includes a second hollow cylinder and a screw 3;

[0045] The side surface of the second hollow cylinder is evenly provided with a plurality of third through holes 10 for the flow of the deplating liquid along the axial direction; preferably, all the third through holes are strip-shaped through holes evenly distributed along the circumferential direction on the side surface of the second hollow cylinder, and the length direction is consistent with the height direction of the cylinder, so that the flow effect of the deplating liquid is better;

[0046] The two ends of the second hollow cylinder are respectively a top cover end 11 and a clamping end 12. A plurality of fourth through holes 13 for the flow of the deplating liquid are provided on the end surface of the top cover end 11. Preferably, all the through holes are evenly distributed along the same circumference, so that the flow effect of the deplating liquid is better. The end surface of the clamping end 12 is an annular surface, and is adapted to the annular groove 15 on the inner end surface of the complex shell-like part.

[0047] The length of the screw 3 is greater than the sum of the height of the first pressure cover 1, the height of the second pressure cover 2 and the distance between the two end surfaces of the annular groove 15 of the complex shell. The screw 3 is vertically arranged at the inner center of the top cover end 11 of the second hollow cylinder and is located in the second hollow cylinder, and is used to combine the first pressure cover 1 and the second pressure cover 2. The diameter of the screw 3 is smaller than the diameter of the central through hole of the first pressure cover 1, so as to ensure that the screw 3 can pass through the central through hole.

[0048] like Figure 6 , Figure 7 As shown, the screw 3 passes through the second hollow cylinder, the complex shell-like parts and the first pressure cover 1, and its end extends from the central through hole of the top end face of the first pressure cover 1; the end of the screw 3 cooperates with the nut 4 to press the first pressure cover 1 and the second pressure cover 2; the end face size of the nut 4 is larger than the outer diameter of the central through hole of the first pressure cover 1; preferably, in order to facilitate manual operation by the operator, the nut 4 is a butterfly nut.

[0049] like Figure 1 , Figure 8 As shown, the upper rubber gasket 5 and the lower rubber gasket 6 are matched with the annular grooves 15 on the outer end face and the inner end face of the annular groove 15, respectively, and are pressed tightly in the annular grooves 15 on the outer end face and the inner end face of the complex shell by the first pressure cover 1 and the second pressure cover 2. The fit between the gasket and the area to be protected of the workpiece is ensured, and the direct contact between the pressure cover and the workpiece to damage the metal substrate is prevented, so that the qualified rate of local electroplating silver of the shell is increased from 70% to more than 95%.

[0050] like Fig. 9 , Fig.10 As shown, the end faces of the first pressure cover 1 and the second pressure cover 2 cooperate with each other to apply a pressing force to the two rubber gaskets from two directions to prevent peeling, blistering and other adverse effects caused by poor bonding strength of the silver layer at the boundary line of the glue coating area, thereby ensuring the precision of the local silver stripping operation.

[0051] Method for local de-silvering process using complex shell parts for local de-silvering protection:

[0052] 1. Place complex shell parts into the electroplating solution and perform full body electroplating first;

[0053] 2. If Figure 8As shown, the upper rubber gasket 5 and the lower rubber gasket 6 are respectively fitted into the annular grooves 15 on the inner end surface and the outer end surface of the through hole of the complex shell-like parts;

[0054] 3. Such as Fig. 9 , Fig.10 As shown, the complex shell-like parts to be partially stripped are installed on the screw 3 in the second pressure cover 2 through the through hole thereof, and then the first pressure cover 1 is docked with the second pressure cover 2 and the screw 3 is passed through the central through hole of the first pressure cover 1, and then the nut 4 is installed on the screw 3 to lock the first pressure cover 1 and the second pressure cover 2, so that the complex shell-like parts to be partially stripped are wrapped in the tooling of the utility model, and the annular groove 15 on the inner end face thereof is pressed by the pressing end 12 of the second pressure cover 2 in the utility model, and the annular groove 15 on the outer end face is pressed by the bottom end face 19 of the first pressure cover 1 in the utility model;

[0055] 4. Place the combination of complex shell parts and the tooling of the utility model into the deplating liquid, and after local precision deplating, let the deplating liquid flow out from the through holes on the side walls of the first pressure cover 1 and the second pressure cover 2 and the through holes on the top cover in the utility model; because the inner end surface of the annular groove 15 of the complex shell part is pressed and protected by the second pressure cover 2, and the outer end surface of the annular groove 15 is pressed and protected by the first pressure cover 1, both end surfaces of the annular groove 15 cannot contact the deplating liquid, thereby achieving local precision deplating of the rest of the part.

[0056] 5. Remove the partial silver stripping protection tooling of the utility model, and finally remove the rubber gasket to complete the partial silver stripping process.

[0057] The above description is only a specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present utility model, and these modifications or substitutions should be included in the protection scope of the present utility model.

Claims

1. A local silver stripping protection tool for complex shell parts, characterized by: It includes a first pressure cover, a second pressure cover, a nut and a rubber gasket; The first pressure cover is a first hollow cylinder, a plurality of first through holes are arranged on the side of the first hollow cylinder, a central through hole and a plurality of second through holes are arranged on the top end surface of the first hollow cylinder; the bottom end surface of the first hollow cylinder is an annular surface, and is adapted to the annular groove on the outer end surface of the complex shell-like part; The second pressure cover comprises a second hollow cylinder and a screw; a plurality of third through holes are arranged on the side of the second hollow cylinder; the two ends of the second hollow cylinder are a top cover end and a pressing end respectively, a plurality of fourth through holes are arranged on the end surface of the top cover end, and the end surface of the pressing end is an annular surface and is adapted to the annular groove on the inner end surface of the complex shell-like part; The screw is vertically arranged at the center of the inner side of the top cover end of the second hollow cylinder and is located in the second hollow cylinder; the length of the screw is greater than the sum of the height of the first pressure cover, the height of the second pressure cover and the distance between the two end faces of the annular groove; the diameter of the screw is smaller than the diameter of the central through hole of the first pressure cover, the screw passes through the second hollow cylinder and the first pressure cover, and its end protrudes from the central through hole of the top end face of the first pressure cover; The end of the screw rod is matched with the nut, and the end face size of the nut is larger than the outer diameter of the central through hole of the first pressure cover; The rubber gasket includes an upper rubber gasket and a lower rubber gasket, The upper rubber gasket cooperates with the annular groove on the outer end surface of the complex shell-like parts, and the lower rubber gasket cooperates with the annular groove on the inner end surface of the complex shell-like parts. The upper rubber gasket and the lower rubber gasket are respectively pressed by the bottom end surface of the first pressure cover and the pressing end of the second pressure cover in the annular grooves on the outer end surface and inner end surface of the complex shell-like parts.

2. The local silver stripping protection tooling for complex shell parts according to claim 1 is characterized by: The first through holes on the side of the first pressure cover are evenly distributed along the circumferential direction, and the third through holes on the side of the second hollow cylinder are evenly distributed along the circumferential direction.

3. According to claim 2, the local silver stripping protection tooling for complex shell parts is characterized by: The first through hole and the third through hole are both bar-shaped through holes whose length directions are consistent with the height direction of the cylinder.

4. According to claim 1, the local silver stripping protection tooling for complex shell parts is characterized by: Two adjacent second through holes are symmetrically arranged with respect to the diameter of the bottom surface of the cylinder, and all the second through holes are evenly distributed; The fourth through holes are evenly distributed along the same circumference.

5. According to claim 1, the local silver stripping protection tooling for complex shell parts is characterized by: The nut is a butterfly nut.

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