CN219174615U

CN219174615U - Device for shielding inner cavity of chemical nickel plating workpiece

Info

Publication number: CN219174615U
Application number: CN202223354155.4U
Authority: CN
Inventors: 刘富; 崔鑫
Original assignee: Shenyang Fortune Precision Equipment Co Ltd
Current assignee: Shenyang Fortune Precision Equipment Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-13
Anticipated expiration: 2032-12-14

Abstract

The utility model relates to a device for shielding an inner cavity of a chemical nickel plating workpiece, which mainly comprises a titanium screw plug, a stainless steel screw, a nylon filling block and a sealing ring; a nylon filling block is arranged in the inner cavity of the workpiece body, the front end of the nylon filling block is provided with a groove, and a titanium screw plug is fixedly connected in the groove through a stainless steel screw; the titanium screw plug is in threaded sealing connection with the threaded hole of the workpiece body; the rear end of the nylon filling block is provided with an O-ring groove; is connected with the inner cavity of the workpiece body in a sealing way through a sealing ring. The device has reasonable structure, can ensure that the inner cavity of the workpiece is completely shielded, has no leakage of liquid medicine in the chemical nickel plating process, is convenient to use and operate, and can be repeatedly used.

Description

Device for shielding inner cavity of chemical nickel plating workpiece

Technical Field

The utility model belongs to the field of surface treatment shielding, and particularly relates to a device for shielding an inner cavity of a chemical nickel plating workpiece.

Background

The chemical nickel plating technology is to plate a layer of nickel-phosphorus alloy on the surface of the material by a chemical method, has good performances of wear resistance, corrosion resistance, high temperature resistance, excellent electric conduction and the like, is widely applied to the fields of aerospace, automobiles, manufacturing and the like, is used as an important part in the semiconductor field, has complex shape and deeper inner cavity, requires shielding of the inner cavity area, inhibits nickel plating, and causes the inner cavity to be heated and expanded in the nickel plating formation due to the nickel plating environment temperature of 80-90 ℃, so that the methods such as rubber plug shielding, adhesive tape shielding, gluing shielding and the like of the conventional shielding method cannot be satisfied, and leakage phenomenon occurs after shielding.

The defects of the traditional shielding process are that the screw thread leakage of the part is 1, the plug gauge is not too large, the inner cavity of the part is leaked, the inner cavity is used as an upper film layer, the repair is difficult, the size of the workpiece is precise, and the size of the part after the leakage repair is out of tolerance. Eventually resulting in the rejection of the workpiece.

Disclosure of Invention

The utility model aims at a device for shielding an inner cavity of an electroless nickel plating workpiece, adopts titanium screw blocking and nylon filling block hard shielding, fills a sealing device along with the shape, and has no leakage phenomenon of the workpiece.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

the shielding device mainly comprises a titanium screw plug, a stainless steel screw, a nylon filling block and a sealing ring; a nylon filling block is arranged in the inner cavity of the workpiece body, the front end of the nylon filling block is provided with a groove, and a titanium screw plug is fixedly connected in the groove through a stainless steel screw; the titanium screw plug is in threaded sealing connection with the threaded hole of the workpiece body; the rear end of the nylon filling block is connected with the inner cavity of the workpiece body in a sealing way through a sealing ring.

The nylon filling block adopts a stepped progressive structure, a titanium screw plug groove is reserved at the front end, and an inner hexagonal groove is reserved at the rear end.

The titanium screw plugs and nylon material filler blocks were connected using M4 stainless steel screws.

The sealing ring is made of fluororubber material.

The filling block is made of nylon material, the expansion coefficient of the nylon material is small, and the filling block is not damaged to a workpiece in the process of loading and unloading friction.

The utility model has the advantages that:

1. the utility model has simple structure, adopts the two-section connection of the blocking and filling blocks to shield the inner cavity, adopts the sealing ring to seal the end head, and ensures that the station of the screw thread and the inner cavity has no leakage risk.

2. The utility model has reasonable material selection, and different materials are respectively selected, so that smooth threads after chemical nickel plating can be ensured, and workpieces can not be scratched during loading and unloading. The pure titanium screw is used for blocking the shielding threads, on one hand, the pure titanium screw is well matched with an aluminum alloy workpiece, the assembly and the disassembly are convenient, and on the other hand, the pure titanium screw cannot be plated with a nickel layer and can be reused.

3. The utility model has novel structure, adopts a hard shielding tool mode, improves the quality and ensures the one-time qualification rate.

4. The utility model improves the efficiency, adopts stainless steel screws and reserved inner hexagonal grooves, and has convenient assembly and disassembly and longer service life.

Drawings

Fig. 1 is an overall cross-sectional view of the present utility model.

FIG. 2 is a schematic illustration of an inventive nylon filler block joint.

FIG. 3 is a cross-sectional view of an inventive nylon filler block.

Detailed Description

The utility model will be described in detail with reference to figures 1-3.

In the present utility model, spatially relative terms such as "above … …," "above … …," "upper surface at … …," "above," and the like may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures, the orientation terms such as "front, back, up, down, left, right," "transverse, vertical, horizontal," and "top, bottom," etc., as used herein, are generally based on the orientation or location as illustrated in the figures, the orientation terms "inner, outer" referring to the interior and exterior of the outline of the components themselves. Positional relationships are used merely for convenience in describing and expressing the positional relationships of the utility model, and unless otherwise indicated, these positional terms do not indicate or imply that the device or element in question must have a particular orientation or be constructed and operated in a particular orientation, and are not to be construed as limiting the scope of the utility model.

The device for shielding the inner cavity of the chemical nickel plating workpiece mainly comprises a titanium screw plug 3, a stainless steel screw 5, a nylon filling block 2 and a sealing ring 6; a nylon filling block 2 is arranged in the inner cavity of the workpiece body 1, the front end of the nylon filling block 2 is provided with a groove, and a titanium screw plug 3 is fixedly connected in the groove through a stainless steel screw 5; the titanium screw plug 3 is in threaded sealing connection with the threaded hole of the workpiece body 1; the rear end of the nylon filling block 2 is connected with the inner cavity of the workpiece body 1 in a sealing way through a sealing ring.

The tail end of the nylon filling block 2 is provided with an inner hexagonal groove structure.

The titanium screw plugs and nylon material filler blocks were connected using M4 stainless steel screws and shims 4. The connection adopts stainless steel screws, the fixation is firm, and the loading and unloading wear is small.

The sealing ring is made of fluororubber material. The sealing ring is made of fluororubber material, has small deformation and good sealing effect, and can be reused.

The filling block is made of nylon material, the expansion coefficient of the nylon material is small, and the filling block is not damaged to a workpiece in the process of loading and unloading friction. The sealing ring is made of fluororubber material, has small deformation and good sealing effect, and can be reused.

The nylon is filled soon and pure titanium screw blocks up design clearance and connects, adopts interior hexagonal stainless steel screw 5 and gasket 4 to fix, and titanium screw blocks up root and nylon filling block tip and adopts the sealing washer to seal, and the work piece is gone into to whole joint shielding device adoption allen key rotation until the screw thread is screwed up completely.

This novel chemical nickel plating of aluminum alloy work piece, with the help of reasonable shielding filler, the inside complete shielding of work piece is guaranteed to sealed rubber ring, outside chemical nickel plating liquid medicine can not get into.

Examples

1. The large-head thread of the pure titanium screw plug is 1-18UNS, the center of the phi 15 small cylinder is provided with an M4 thread, and a sealing groove is reserved at the central connection part.

2. The nylon filling block adopts a stepped progressive structure, a titanium screw plug groove is reserved at a small end, an inner hexagonal groove is reserved at a large end, an inner hexagonal wrench is adopted for assembly and removal, and a sealing groove is reserved at the large end.

3. The pure titanium screw plug and the nylon filling block are connected together by using an M4 screw and a gasket, so that shaking is avoided.

4. And pressing the end sealing ring into the reserved sealing groove, rotating the shielding device into the workpiece by adopting an inner hexagonal wrench, and checking whether the sealing is firm.

5. And after the chemical nickel plating is finished, the shielding device is taken down, and cleaning and baking are carried out so as to be used for the second time.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. An inner cavity shielding device for an electroless nickel plating workpiece is characterized in that:

the shielding device mainly comprises a titanium screw plug, a stainless steel screw, a nylon filling block and a sealing ring;

a nylon filling block is arranged in the inner cavity of the workpiece body, the front end of the nylon filling block is provided with a groove, and a titanium screw plug is fixedly connected in the groove through a stainless steel screw; the titanium screw plug is in threaded sealing connection with the threaded hole of the workpiece body;

the rear end of the nylon filling block is connected with the inner cavity of the workpiece body in a sealing way through a sealing ring.

2. The device for shielding an inner cavity of an electroless nickel plating workpiece according to claim 1, wherein:

3. The device for shielding an inner cavity of an electroless nickel plating workpiece according to claim 1, wherein: the titanium screw plugs and nylon material filler blocks were connected using M4 stainless steel screws.

4. The device for shielding an inner cavity of an electroless nickel plating workpiece according to claim 1, wherein: the sealing ring is made of fluororubber material.