A local sand blasting shielding device for shaft workpieces

Abstract

The utility model provides a kind of local sand blasting shielding device of shaft workpiece, including bearing and rubber mask, the bearing includes inner ring and outer ring, the inner ring is fixedly connected with workpiece, the surface of the outer ring is equipped with boss, one end of the rubber mask is fixedly connected together with the outer ring using clamp assembly, another end of the rubber mask extends outward, and the rubber mask is supported on the top surface of the boss. When workpiece rotates, the part of workpiece surface exposed outside rubber mask can be fully sandblasted by adopting the technical scheme of the utility model, and because the motion state of bearing inner ring and outer ring is relatively independent, rubber mask is prevented from rotating with workpiece, rubber mask shields local area of workpiece surface, and sand cannot enter bearing interior, bearing is prevented from being blocked, the utility model operates stably, and the utility model is flexible and convenient to use, and more widely applicable.

Description

Technical Field

[0001] This utility model belongs to the field of fixture technology, and in particular relates to a local sandblasting shielding device for shaft-type workpieces. Background Technology

[0002] Sandblasting is widely used to treat the surface of manufactured parts. However, workpieces vary in shape and have different technical requirements for their surface finish. Some parts only require sandblasting of a specific area. For example, patent document CN102601741B discloses a special local sandblasting machine for glass bottles, including a sandbox and a sandblasting gun. A gun displacement cylinder is connected to the upper part of the sandbox, and the piston of the gun displacement cylinder passes through the box and connects to the sandblasting gun. A sandblasting positioning frame is provided at the position of the sandblasting gun facing the sandbox. An operating platform is provided below the sandbox, and a linear guide rail is fixedly connected to the operating platform. A slide rail is slidably fitted on the linear guide rail, and a bottle holder is fixedly connected to the slide rail. A bottle feeding cylinder is fixedly connected to the operating platform, and the piston of the bottle feeding cylinder is connected to the slide rail. A bottle clamping cylinder is provided directly above the bottle feeding cylinder, and a bottle mouth sealing cylinder is provided directly above the sandblasting positioning frame. This patented technology enables sandblasting of specific areas of glass bottles. However, this local sandblasting machine is only suitable for local sandblasting of glass bottles, and its application range is limited. When performing local sandblasting on a certain type of shaft workpiece, the workpiece needs to be rotated so that the area on the outer periphery of the workpiece that needs to be sandblasted can be fully sandblasted. The area that does not need to be sandblasted will rotate with the workpiece as a whole, which not only wastes sand material, but also makes the sandblasted area and the unsandblasted area on the workpiece surface confusing. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a local sandblasting shielding device for shaft-type workpieces.

[0004] This utility model is achieved through the following technical solution.

[0005] This utility model provides a partial sandblasting shielding device for shaft-type workpieces, including a bearing and a rubber shield. The bearing includes an inner ring and an outer ring. The inner ring is fixedly connected to the workpiece. The surface of the outer ring is provided with a boss. One end of the rubber shield is fixedly connected to the outer ring by a clamp assembly. The other end of the rubber shield extends outward and is supported on the top surface of the boss.

[0006] The number of protrusions is multiple, and the multiple protrusions are arranged at equal intervals along the outer peripheral side of the outer ring.

[0007] The number of protrusions shall not be less than 12.

[0008] The relative height between the top surface of the boss and the surface of the outer ring is greater than 6 mm.

[0009] The clamp assembly includes a first clamp, a second clamp, a pin, a screw, and a nut. One end of the first clamp is provided with a limiting groove. The other end of the first clamp is hinged to one end of the pin. The other end of the pin is hinged to one end of the second clamp. The other end of the second clamp is hinged to one end of the screw. The other end of the screw is screwed to the nut. When the screw is fitted into the limiting groove, the rubber cover is sandwiched between the outer ring and the first clamp, and between the outer ring and the second clamp.

[0010] The first or second clamp is a semi-circular shape.

[0011] The nut is a wing nut.

[0012] The first clamp and the second clamp have at least one end face that is flush with the end face of the outer ring.

[0013] The beneficial effects of this utility model are as follows: When the workpiece rotates, the part of the workpiece surface exposed outside the rubber shield can be fully sandblasted. Since the movement states of the inner and outer rings of the bearing are relatively independent, the rubber shield is prevented from rotating with the workpiece. The rubber shield blocks the local area of ​​the workpiece surface and prevents the sand from entering the bearing, thus avoiding bearing jamming. This makes the operation of this utility model stable. In addition, this utility model is flexible and convenient to use and has a wider range of applications. Attached Figure Description

[0014] Figure 1 This is the front view of this utility model;

[0015] Figure 2 This is the front view of the clamp assembly of this utility model.

[0016] In the diagram: 1-Bearing, 2-Rubber cover, 3-Workpiece, 4-Boss, 5-Clamp assembly, 6-Inner ring, 7-Outer ring, 8-First clamp, 9-Second clamp, 10-Pin, 11-Screw, 12-Nut, 13-Limiting groove. Detailed Implementation

[0017] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0018] like Figures 1 to 2 As shown, this utility model provides a partial sandblasting shielding device for shaft workpieces, including a bearing 1 and a rubber shield 2. The bearing 1 includes an inner ring 6 and an outer ring 7. The inner ring 6 is fixedly connected to the workpiece 3. The surface of the outer ring 7 is provided with a boss 4. One end of the rubber shield 2 is fixedly connected to the outer ring 7 by a clamp assembly 5. The other end of the rubber shield 2 extends outward and is supported on the top surface of the boss 4.

[0019] By adopting the technical solution of this utility model, when the workpiece rotates, the part of the workpiece surface exposed outside the rubber shield can be fully sandblasted. Since the movement states of the inner and outer rings of the bearing are relatively independent, the rubber shield is prevented from rotating with the workpiece. The rubber shield blocks the local area of ​​the workpiece surface and prevents the sand from entering the bearing, thus avoiding bearing jamming. This makes the operation of this utility model stable. Furthermore, this utility model is flexible and convenient to use and has a wider range of applications.

[0020] Specifically, there are multiple bosses 4, which are arranged at equal intervals along the outer periphery of the outer ring 7. Preferably, there are no fewer than 12 bosses 4. The relative height between the top surface of the boss 4 and the surface of the outer ring 7 is greater than 6 mm.

[0021] Additionally, the clamp assembly 5 includes a first clamp 8, a second clamp 9, a pin 10, a screw 11, and a nut 12. One end of the first clamp 8 has a limiting groove 13. The other end of the first clamp 8 is hinged to one end of the pin 10, the other end of the pin 10 is hinged to one end of the second clamp 9, the other end of the second clamp 9 is hinged to one end of the screw 11, and the other end of the screw 11 is screwed to the nut 12. When the screw 11 is fitted into the limiting groove 13, the rubber cover 2 is clamped between the outer ring 7 and the first clamp 8, and between the outer ring 7 and the second clamp 9. Specifically, the first clamp 8 or the second clamp 9 is generally semi-circular in shape. The nut 12 is a wing nut 12. At least one end face of the first clamp 8 and the second clamp 9 is flush with the end face of the outer ring 7. By adopting the technical solution of this utility model, the rubber cover also fully shields the bearing, preventing sand from entering the bearing and ensuring that this utility model can be used normally and stably. In addition, the clamp assembly 5 allows the rubber cover 2 and the outer ring 7 to be quickly clamped together, which is flexible and convenient to use. It can quickly shield the parts of the workpiece surface that do not need sandblasting treatment, and realize the sandblasting treatment of the workpiece surface.

Claims

1. A local sandblasting shielding device for shaft-type workpieces, characterized in that: Includes a bearing (1) and a rubber shield (2). The bearing (1) includes an inner ring (6) and an outer ring (7). The inner ring (6) is fixedly connected to the workpiece (3). The surface of the outer ring (7) is provided with a boss (4). One end of the rubber shield (2) is fixedly connected to the outer ring (7) using a clamp assembly (5). The other end of the rubber shield (2) extends outward and is supported on the top surface of the boss (4).

2. The local sandblasting shielding device for shaft-type workpieces as described in claim 1, characterized in that: The number of protrusions (4) is multiple, and the multiple protrusions (4) are arranged at equal intervals along the outer peripheral side of the outer ring (7).

3. The local sandblasting shielding device for shaft-type workpieces as described in claim 2, characterized in that: The number of the bosses (4) is not less than 12.

4. The local sandblasting shielding device for shaft-type workpieces as described in any one of claims 1 to 3, characterized in that: The relative height between the top surface of the boss (4) and the surface of the outer ring (7) is greater than 6 mm.

5. The local sandblasting shielding device for shaft-type workpieces as described in claim 1, characterized in that: The clamp assembly (5) includes a first clamp (8), a second clamp (9), a pin (10), a screw (11), and a nut (12). One end of the first clamp (8) is provided with a limiting groove (13). The other end of the first clamp (8) is hinged to one end of the pin (10). The other end of the pin (10) is hinged to one end of the second clamp (9). The other end of the second clamp (9) is hinged to one end of the screw (11). The other end of the screw (11) is screwed to the nut (12). When the screw (11) is fitted into the limiting groove (13), the rubber cover (2) is sandwiched between the outer ring (7) and the first clamp (8) and between the outer ring (7) and the second clamp (9).

6. The partial sandblasting shielding device for shaft-type workpieces as described in claim 5, characterized in that: The first clamp (8) or the second clamp (9) is a semi-circular shape.

7. The local sandblasting shielding device for shaft-type workpieces as described in claim 5, characterized in that: The nut (12) is a wing nut (12).

8. The local sandblasting shielding device for shaft-type workpieces as described in claim 5, characterized in that: The first clamp (8) and the second clamp (9) have at least one end face that is flush with the end face of the outer ring (7).

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