Protective tool for copper plating of bearing outer ring

Abstract

The invention relates to a protection tool for copper plating, in particular to a protection tool for copper plating of a bearing outer ring. The problem that in the prior art, when copper is plated on the outer surface of a bearing outer ring, a non-plated face is prone to being corroded by an oil removing solution or permeating into electroplating liquid, and the product quality is affected is solved. The device is simple in structure and easy to use. When the conductive nut is screwed, the upper cover plate and the lower bottom plate apply pressure to the two end faces of the bearing outer ring, at the moment, the sealing ring, the first sealing gasket and the second sealing gasket elastically deform, and meanwhile the rubber plug is inserted into an oil hole in the circumferential face of the bearing outer ring. Therefore, the non-plating positions (the inner circumferential surface, the two end surfaces and the inner surfaces of the oil holes) of the bearing outer ring are protected, and the non-plating surfaces are effectively prevented from being corroded by the oil removing solution or liquid seepage of the non-plating surfaces is effectively prevented. The invention belongs to the technical field of bearing part electroplating.

Description

Technical Field

[0001] The invention relates to a protective tooling for copper plating, in particular to a protective tooling for copper plating of a bearing outer ring, and belongs to the technical field of electroplating of bearing parts. Background Art

[0002] According to the special requirements of the product, the outer circumference of the outer ring of a certain type of bearing needs to be copper-plated, and there are several oil holes on the circumference of the outer ring of this type of bearing. Therefore, it is necessary to protect the non-plated positions of the outer ring of the bearing (inner circumference, two end faces and inner surfaces of the oil holes), and the appearance quality requirements are extremely high.

[0003] At present, the common protection method is to use tape to bond the two end surfaces and oil holes of the bearing outer ring for protection. However, during the degreasing and copper plating process of the bearing outer ring at 60-80℃, the tape is heated, resulting in poor adhesion and easy fall-off of the tape, which in turn causes the non-plated surface to be corroded by the degreasing solution or the non-plated surface to penetrate the electroplating solution, affecting product quality and generating waste.

[0004] In summary, how to propose a protective tooling for copper plating of bearing outer rings in response to the above technical problems has become an urgent problem to be solved by technicians in this field. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a protective tooling for copper plating of a bearing outer ring.

[0006] The technical solution of the present invention is: a protective tooling for copper plating of a bearing outer ring, comprising a conductive nut, an upper cover plate, a lower base plate, a cushion block, a conductive block, a first sealing gasket, a second sealing gasket, a conductive screw and a plurality of rubber plugs.

[0007] The upper cover plate and the lower base plate are respectively buckled on the two end surfaces of the bearing outer ring, and the cushion block, the conductive block and the upper cover plate are sequentially sleeved on the conductive screw;

[0008] The outer ring of the bearing is sleeved on the conductive block, the outer diameter of the conductive block is the same as the inner diameter of the outer ring of the bearing, and the two end surfaces of the cushion block are respectively against the lower bottom plate and the conductive block.

[0009] One end of the conductive screw is threadedly connected to the lower base plate, and the other end of the conductive screw passes through the upper cover plate and is connected to the conductive nut, and a sealing ring is sandwiched between the conductive nut and the upper cover plate.

[0010] The first sealing gasket is arranged between one end surface of the bearing outer ring and the upper cover plate, and the second sealing gasket is arranged between the other end surface of the bearing outer ring and the lower bottom plate. The rubber plug is inserted into the oil hole on the circumferential surface of the bearing outer ring.

[0011] Compared with the prior art, the present invention has the following effects:

[0012] 1. The structure of the present invention is simple and easy to use. When the conductive nut 100 is tightened, the upper cover plate 200 and the lower base plate 300 both apply pressure to the two end surfaces of the bearing outer ring 1000. At this time, the sealing ring 700, the first sealing gasket 610 and the second sealing gasket 620 are elastically deformed, and the rubber plug 900 is inserted into the oil hole on the circumferential surface of the bearing outer ring 1000, thereby protecting the non-plated position (inner circumferential surface, two end surfaces and inner surface of the oil hole) of the bearing outer ring 1000, effectively preventing the non-plated surface from being corroded by the degreasing solution or the non-plated surface from seeping. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a cross-sectional view of the present invention;

[0014] Figure 2 is a top view of the conductive block 500;

[0015] Figure 3 yes Figure 1 A partial enlarged view of point Ⅰ in the middle;

[0016] Figure 4 yes Figure 1 A partial enlarged view of the middle II;

[0017] Figure 5 yes Figure 1 A partial enlarged view of the middle part III;

[0018] Figure 6 This is a schematic diagram of the outer circumference of the bearing outer ring 1000 being copper plated.

[0019] In the figure: 100, conductive nut; 200, upper cover plate; 300, lower base plate; 400, spacer block; 500, conductive block; 510, tensioning screw; 610, first sealing gasket; 620, second sealing gasket; 700, sealing ring; 800, conductive screw; 900, rubber plug; 1000, bearing outer ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] Specific implementation method 1: Combination Figures 1 to 5 To illustrate the present embodiment, a protective tooling for copper plating of a bearing outer ring in the present embodiment includes a conductive nut 100 , an upper cover plate 200 , a lower base plate 300 , a spacer block 400 , a conductive block 500 , a first sealing gasket 610 , a second sealing gasket 620 , a conductive screw 800 and a plurality of rubber plugs 900 .

[0022] The upper cover plate 200 and the lower base plate 300 are respectively mounted on the two end surfaces of the bearing outer ring 1000 , and the cushion block 400 , the conductive block 500 and the upper cover plate 200 are sequentially mounted on the conductive screw 800 .

[0023] The bearing outer ring 1000 is sleeved on the conductive block 500 , the outer diameter of the conductive block 500 is the same as the inner diameter of the bearing outer ring 1000 , and the two end surfaces of the cushion block 400 are respectively against the lower base plate 300 and the conductive block 500 .

[0024] One end of the conductive screw 800 is threadedly connected to the lower base plate 300 , and the other end of the conductive screw 800 passes through the upper cover plate 200 and is connected to the conductive nut 100 . A sealing ring 700 is sandwiched between the conductive nut 100 and the upper cover plate 200 .

[0025] The first sealing gasket 610 is arranged between one end surface of the bearing outer ring 1000 and the upper cover plate 200, and the second sealing gasket 620 is arranged between the other end surface of the bearing outer ring 1000 and the lower base plate 300. The rubber plug 900 is inserted into the oil hole on the circumferential surface of the bearing outer ring 1000.

[0026] Specific implementation method 2: Combination Figure 1 and Figure 2 To explain this embodiment, two tensioning screws 510 are installed on the conductive block 500 in this embodiment. When the tensioning screws 510 are tightened, the conductive block 500 will be slightly deformed, so that the radial size of the conductive block 500 changes, and then the conductive block 500 is closely abutted against the bearing outer ring 1000 and the conductive screw 400, respectively, to improve the conductive effect. Other components and connection relationships are the same as those of the first embodiment.

[0027] Specific implementation method three: Combination Figures 1 to 5 To explain this embodiment, in this embodiment, the conductive nut 100 , the conductive block 500 and the conductive screw 800 are all made of stainless steel.

[0028] Furthermore, the upper cover plate 200 and the lower base plate 300 are both made of polytetrafluoroethylene.

[0029] Furthermore, the material of the cushion block 400 is 45 steel.

[0030] Furthermore, the first sealing gasket 610 , the second sealing gasket 620 , the sealing ring 700 and the rubber plug 900 are all made of silicone rubber.

[0031] Other components and connection relationships are the same as those in the first or second specific implementation.

[0032] How it works

[0033] Combination Figures 1 to 6 The working principle of the present invention is described:

[0034] When tightening the conductive nut 100, the upper cover plate 200 and the lower base plate 300 both apply pressure to the two end surfaces of the bearing outer ring 1000. At this time, the sealing ring 700, the first sealing gasket 610 and the second sealing gasket 620 are elastically deformed. At the same time, the rubber plug 900 is inserted into the oil hole on the circumferential surface of the bearing outer ring 1000, thereby protecting the non-plated position of the bearing outer ring 1000 (the inner circumferential surface, the two end surfaces and the inner surface of the oil hole), so that the plating liquid cannot affect the non-plated position.

[0035] When electroplating the outer circumference of the bearing outer ring 1000, the conductive nut 100 is connected to the cathode, and then the present invention is placed in the electroplating tank, and the electroplating liquid covers the entire present invention, and the outer circumference of the bearing outer ring 1000 is completely in contact with the electroplating liquid; then the anode rod is inserted into the electroplating tank (such as Figure 6 As shown), the conductive nut 100, the conductive screw 800, the conductive block 500, the bearing outer ring 1000 and the anode rod constitute a conductive path, which can control the circumferential uniformity of the plating layer. Finally, the copper plating can be completed when the plating thickness of the bearing outer ring 1000 reaches a specified range.

[0036] The present invention has been disclosed as above in the form of a preferred embodiment, but it is not intended to limit the present invention. Any simple modification, equivalent changes and modifications made to the above implementation cases by any professional and technical personnel who do not deviate from the content of the technical solution of the present invention and based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A protective tool for copper plating of bearing outer ring, characterized in that: It comprises a conductive nut (100), an upper cover plate (200), a lower base plate (300), a cushion block (400), a conductive block (500), a first sealing gasket (610), a second sealing gasket (620), a conductive screw (800) and a plurality of rubber plugs (900); The upper cover plate (200) and the lower base plate (300) are respectively mounted on the two end surfaces of the bearing outer ring (1000), and the cushion block (400), the conductive block (500) and the upper cover plate (200) are sequentially mounted on the conductive screw (800); The bearing outer ring (1000) is sleeved on the conductive block (500), the outer diameter of the conductive block (500) is the same as the inner diameter of the bearing outer ring (1000), and the two end surfaces of the cushion block (400) are respectively against the lower base plate (300) and the conductive block (500); One end of the conductive screw (800) is threadedly connected to the lower base plate (300), and the other end of the conductive screw (800) passes through the upper cover plate (200) and is connected to the conductive nut (100), and a sealing ring (700) is sandwiched between the conductive nut (100) and the upper cover plate (200); The first sealing gasket (610) is arranged between one end surface of the bearing outer ring (1000) and the upper cover plate (200), and the second sealing gasket (620) is arranged between the other end surface of the bearing outer ring (1000) and the lower base plate (300); the rubber plug (900) is inserted into the oil hole on the circumferential surface of the bearing outer ring (1000).

2. The protective tooling for copper plating of a bearing outer ring according to claim 1, characterized in that: Two tensioning screws (510) are installed on the conductive block (500).

3. The protective tooling for copper plating of bearing outer ring according to claim 2, characterized in that: The conductive nut (100), the conductive block (500) and the conductive screw (800) are all made of stainless steel.

4. The protective tooling for copper plating of bearing outer ring according to claim 3, characterized in that: The upper cover plate (200) and the lower base plate (300) are both made of polytetrafluoroethylene.

5. The protective tooling for copper plating of bearing outer ring according to claim 4, characterized in that: The cushion block (400) is made of 45 steel.

6. The protective tooling for copper plating of a bearing outer ring according to claim 5, characterized in that: The first sealing gasket (610), the second sealing gasket (620), the sealing ring (700) and the rubber plug (900) are all made of silicone rubber.

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