Pneumatic grinding machine

Abstract

The utility model discloses a pneumatic polisher, which belongs to the technical field of pneumatic polishers and comprises a polisher body, a bearing ring is arranged on the outer side of the bottom end of the polisher body, a telescopic folding cover is mounted at the bottom end of the bearing ring, a protective ring is connected to the bottom end of the telescopic folding cover, and balls are circumferentially distributed at the bottom end of the protective ring. Telescopic columns are distributed between the bearing rings in a circular shaft mode, and the outer sides of the telescopic columns are sleeved with springs. By designing a group of protection mechanism consisting of a bearing ring, a telescopic folding sealing cover, a telescopic column, a spring, a protection ring and a ball, in the use process of the device, the bearing ring, the protection ring and the telescopic folding cover can be used for hiding and protecting the grinding disc, and vibration generated when the device accidentally slides off can be absorbed by combining the telescopic column and the spring; and meanwhile, the normal grinding performance of the device is guaranteed through cooperation with the balls, and the protection performance of the device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic grinders, in particular to a pneumatic grinder. Background Art

[0002] Pneumatic grinders are generally used for metal grinding, cutting, paint removal, putty grinding, etc. Pneumatic grinders include disc grinders, orbital grinders, and belt grinders. Disc grinders are divided into compound action grinders and single motion disc grinders. They are suitable for rough grinding, and orbital grinders are suitable for fine processing. When grinding narrow areas, you can use a belt grinder.

[0003] The existing pneumatic grinder uses the high-pressure gas in the external air pipe to drive the grinding disc to rotate during use, so as to grind the object. During the grinding process, since the grinding disc is always exposed, there is a situation where the device falls due to the worker's hand slipping, which leads to the grinding disc being damaged due to the lack of a protective mechanism, resulting in poor protection effect of the device and a short service life of the grinding disc. Therefore, a pneumatic grinder is urgently needed to solve the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a pneumatic grinder.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A pneumatic grinder comprises a grinder body, a bearing ring is arranged on the outer side of the bottom end of the grinder body, a telescopic folding cover is installed on the bottom end of the bearing ring, a protective ring is connected to the bottom end of the telescopic folding cover, balls are distributed in a circular pattern on the bottom end of the protective ring, telescopic columns are distributed in a circular axis between the bearing rings, a spring is sleeved on the outer side of the telescopic column, and a grinding disc is installed on the bottom end of the grinder body.

[0007] Preferably, the carrying ring is connected to the grinder body via screws, one end of the telescopic folding cover is fixedly connected to the carrying ring, and the other end of the telescopic folding cover is fixedly connected to the protective ring.

[0008] Preferably, the ball is rotatably connected to the protective ring, and a ball cavity in which the ball is installed is opened at the bottom end of the protective ring.

[0009] Preferably, one end of the telescopic column is fixedly connected to the carrying ring, the other end of the telescopic column is fixedly connected to the protective ring, and the spring is welded to the outer side wall of the telescopic column.

[0010] Preferably, the grinding disc is fixedly connected to the bottom end of the grinder body, and the specifications of the grinding disc are smaller than the specifications of the protective ring.

[0011] Preferably, an air nozzle is connected to one side wall of the grinder body, and the air nozzle is fixedly connected to the grinder body.

[0012] Preferably, a handle is fixed to the upper end of the grinder body, and the handle is connected to the grinder body by screws.

[0013] Beneficial technical effects of the utility model:

[0014] The utility model designs a protective mechanism consisting of a load-bearing ring, a telescopic folding sealing cover, a telescopic column, a spring, a protective ring and a ball bearing. During the use of the device, the load-bearing ring, the protective ring and the telescopic folding cover can hide and protect the grinding disc. The telescopic column and the spring can absorb the vibration when the device accidentally slips, and protect the grinding disc. At the same time, the ball bearing can be used to ensure the normal grinding performance of the device, thereby effectively improving the protective performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of a pneumatic grinder according to the utility model;

[0016] Figure 2 It is a structural schematic diagram of a preferred embodiment of a pneumatic grinder according to the utility model; (after removing the telescopic folding cover)

[0017] Figure 3 A bottom view of a grinding machine body in a preferred embodiment of a pneumatic grinding machine according to the utility model;

[0018] Figure 4 The figure is a bottom view of a protective ring in a preferred embodiment of a pneumatic grinder according to the utility model.

[0019] The following are the descriptions of the reference numerals:

[0020] 1. Protective ring; 2. Telescopic folding cover; 3. Air nozzle; 4. Handle; 5. Grinder body; 6. Loading ring; 7. Telescopic column; 8. Spring; 9. Grinding disc; 10. Ball. DETAILED DESCRIPTION

[0021] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0022] like Figure 1-Figure 4As shown, a pneumatic grinder provided in this embodiment includes a grinder body 5, a bearing ring 6 is arranged on the outer side of the bottom end of the grinder body 5, a telescopic folding cover 2 is installed on the bottom end of the bearing ring 6, a protective ring 1 is connected to the bottom end of the telescopic folding cover 2, balls 10 are distributed circumferentially at the bottom end of the protective ring 1, telescopic columns 7 are distributed in a circular axis between the bearing rings 6, a spring 8 is sleeved on the outer side of the telescopic column 7, and a grinding disc 9 is installed on the bottom end of the grinder body 5.

[0023] The carrying ring 6 is connected to the grinder body 5 by screws, one end of the telescopic folding cover 2 is fixedly connected to the carrying ring 6, and the other end of the telescopic folding cover 2 is fixedly connected to the protective ring 1. The carrying ring 6, the protective ring 1 and the telescopic folding cover 2 can hide and protect the grinding disc 9.

[0024] The ball 10 is rotatably connected to the protective ring 1. A ball cavity in which the ball 10 is installed is provided at the bottom of the protective ring 1. The ball 10 can be conveniently moved on the surface of the workpiece by a worker holding the device.

[0025] One end of the telescopic column 7 is fixedly connected to the carrying ring 6, and the other end of the telescopic column 7 is fixedly connected to the protective ring 1. The spring 8 is welded to the outer wall of the telescopic column 7. The telescopic column 7 and the spring 8 are combined to absorb the vibration when the device accidentally slips, and protect the grinding disc 9. At the same time, the ball 10 is used to ensure the normal grinding performance of the device, effectively improving the protection performance of the device.

[0026] The grinding disc 9 is fixedly connected to the bottom end of the grinding machine body 5 . The specification of the grinding disc 9 is smaller than that of the protective ring 1 . The grinding disc 9 rotates to grind the workpiece.

[0027] An air nozzle 3 is connected to one side wall of the grinder body 5 . The air nozzle 3 is fixedly connected to the grinder body 5 , and the air nozzle 3 is convenient for being connected to an external air pipe.

[0028] A handle 4 is fixed to the upper end of the grinder body 5 , and the handle 4 is connected to the grinder body 5 by screws. The handle 4 is convenient for the staff to hold the device.

[0029] Working principle of the device: During the use of the device, the external air pipe is connected to the air nozzle 3, and then the staff holds the device on the surface of the workpiece through the handle 4. Then the staff applies pressure to the grinder body 5 to compress the telescopic column 7 and the spring 8, and finally makes the grinding disc 9 contact with the surface of the workpiece for grinding. During the grinding process, the load-bearing ring 6, the protective ring 1 and the telescopic folding cover 2 hide and protect the grinding disc 9, and the ball 10 makes it convenient for the staff to move the grinder body 5. The telescopic column 7 and the spring 8 can absorb the vibration when the device accidentally slips, protect the grinding disc 9, and effectively improve the protection performance of the device.

[0030] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A pneumatic grinder, characterized in that: The invention comprises a grinding machine body (5), wherein a bearing ring (6) is arranged on the outer side of the bottom end of the grinding machine body (5), a telescopic folding cover (2) is installed on the bottom end of the bearing ring (6), a protective ring (1) is connected to the bottom end of the telescopic folding cover (2), balls (10) are distributed in a circular pattern on the bottom end of the protective ring (1), telescopic columns (7) are distributed in a circular pattern between the bearing rings (6), a spring (8) is sleeved on the outer side of the telescopic column (7), and a grinding disc (9) is installed on the bottom end of the grinding machine body (5).

2. A pneumatic grinder according to claim 1, characterized in that: The bearing ring (6) is connected to the grinding machine body (5) via screws, one end of the telescopic folding cover (2) is fixedly connected to the bearing ring (6), and the other end of the telescopic folding cover (2) is fixedly connected to the protective ring (1).

3. A pneumatic grinder according to claim 2, characterized in that: The ball (10) is rotatably connected to the protective ring (1), and a ball cavity in which the ball (10) is installed is provided at the bottom end of the protective ring (1).

4. A pneumatic grinder according to claim 3, characterized in that: One end of the telescopic column (7) is fixedly connected to the bearing ring (6), the other end of the telescopic column (7) is fixedly connected to the protective ring (1), and the spring (8) is welded to the outer side wall of the telescopic column (7).

5. A pneumatic grinder according to claim 4, characterized in that: The grinding disc (9) is fixedly connected to the bottom end of the grinding machine body (5), and the specifications of the grinding disc (9) are smaller than those of the protective ring (1).

6. A pneumatic grinder according to claim 5, characterized in that: An air nozzle (3) is connected to one side wall of the grinder body (5), and the air nozzle (3) is fixedly connected to the grinder body (5).

7. A pneumatic grinder according to claim 6, characterized in that: A handle (4) is fixed to the upper end of the grinder body (5), and the handle (4) is connected to the grinder body (5) via screws.

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