Pneumatic polishing machine with assembled polishing disc structure

Abstract

The utility model discloses a pneumatic polishing machine of an assembly type polishing disc structure, which comprises an air valve and a pneumatic rotating shaft sleeve, a filtering structure is arranged on one side of the air valve, a pressing plate is connected to one side of the top end of the air valve in an overturning manner, a switch button is arranged on the other side of the top end of the air valve, and the pneumatic rotating shaft sleeve is fixedly connected to the other side of the air valve. The bottom end of the pneumatic rotating shaft sleeve is fixedly connected with a transmission shaft shell, and a sand paper plate is installed below the lower cover. By arranging the auxiliary structure, the countersunk head screw is rotated by using a special tool to drive the adjusting fluted disc to rotate so as to drive the adjusting thread, so that the clamping block in threaded connection with the second insertion hole moves along the guide rail; and by controlling positive and negative rotation of the countersunk head screw rod, the multiple clamping blocks can clamp and unfold the inserting rod inserted into the adjusting thread, then the adjusting fluted disc and the supporting plate can be directly pulled out, and the convenience of replacement and use of the polishing machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic polishers, in particular to a pneumatic polisher with an assembled polishing disc structure. Background Art

[0002] As a high-speed rotating grinding equipment powered by gas, the pneumatic polisher can perform a certain degree of grinding and polishing on relatively soft materials such as wood and plastic boards after driving the sandpaper at high speed. Compared with traditional polishers, the pneumatic polisher has a lower cost of use.

[0003] To this end, the patent specification with publication number CN209350013U discloses a hand-held pneumatic polisher for polishing products, including a shell, an air inlet connector is provided on one side of the shell, a pneumatic motor is connected to one side of the air inlet connector through an air pipe, an air outlet is provided on one side of the pneumatic motor, the pneumatic motor is connected to a backing tray through a transmission column, a spring column is provided inside the backing tray, a sandpaper sheet is fixedly connected to the lower end of the backing tray, a protective cover is installed on the transmission column, a pressure plate is connected to the shell through a cylindrical pin, and a pressing air valve for controlling the on and off of compressed air is fixedly connected to the pressure plate. The utility model can better fit the product during the polishing operation, can perform good polishing on spherical or curved products, will not cause deformation of the product after polishing, and the size exceeds the tolerance problem, and the hand-held pneumatic polisher for polishing products is light and flexible. The above-mentioned pneumatic polisher has a high polishing effect when in use, but there are still some problems:

[0004] When the pneumatic polisher is in use, the sandpaper sheet often needs to be disassembled and replaced together with the bottom tray, which makes the replacement and disassembly of the pneumatic polisher inconvenient and the use cost high. Utility Model Content

[0005] The utility model aims to provide a pneumatic polisher with an assembled polishing disc structure, so as to solve the defect that the sandpaper sheets of the existing pneumatic polishers are inconvenient to replace.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an assembled polishing disc structure pneumatic polishing machine, comprising an air valve and a pneumatic rotating shaft sleeve, a filtering structure is installed on one side of the air valve, a pressing plate is flipped and connected to one side of the top of the air valve, a switch button is provided on the other side of the top of the air valve, a pneumatic rotating shaft sleeve is fixedly connected to the other side of the air valve, a transmission shaft housing is fixedly connected to the bottom end of the pneumatic rotating shaft sleeve, a lower cover is installed below the transmission shaft housing, an auxiliary structure is installed at the bottom end of the lower cover, the auxiliary structure comprises a sandpaper board, a support plate, a limit ring, an insertion rod, a limit groove, a first slot, a transmission gear plate, an adjusting thread, a second jack, an adjusting gear plate, a countersunk screw, a guide rail and a clamping block, and the sandpaper board is installed below the lower cover.

[0007] When in use, the air pipe connected to the cylinder is connected to the air inlet pipe, so that the gas generated by the cylinder can enter the interior of the air valve, and by pressing the pressing plate and indirectly pressing the switch button, the gas entering the air valve can enter the interior of the pneumatic rotating shaft sleeve. At this time, the starting rotating shaft located inside the pneumatic rotating shaft sleeve can rotate rapidly, and the lower cover drives the sandpaper board to rotate at high speed, so that the sandpaper board can perform grinding and polishing operations.

[0008] Preferably, the filtering structure includes an outer tube, an insert tube, a filter tube, filter holes and an air inlet pipe, the outer tube is installed on one side of the air valve, one side of the inner part of the outer tube is fixedly connected to the insert tube, the outer side wall of the insert tube is fixedly connected to the filter tube, one side of the filter tube is provided with filter holes, and one side of the outer tube is fixedly connected to the air inlet pipe.

[0009] Preferably, a plurality of filter holes are opened inside the filter tube, and the plurality of filter holes are distributed in a ring shape on one side of the filter tube, so as to filter the gas.

[0010] Preferably, the top of the sandpaper board is fixedly connected to a support plate, the outer side of the top of the support plate is fixedly connected to a limiting ring, the middle position of the top of the support plate is fixedly connected to a plug rod, a limiting groove is provided on the outer side of the bottom end of the lower cover, a first slot is provided at the middle position of the bottom end of the lower cover, a transmission gear disk is rotatably connected to the middle position of the bottom end of the lower cover, an adjusting thread is provided at the top of the transmission gear disk, a second jack is provided inside the transmission gear disk, an adjusting gear disk is meshed on one side of the transmission gear disk, the top of the adjusting gear disk is fixedly connected to a countersunk screw, the top of the lower cover is fixedly connected to a guide rail, the bottom end of the guide rail is slidably connected to a clamping block, and by controlling the forward and reverse rotation of the countersunk screw, a plurality of clamping blocks can clamp and unfold the plug rod inserted into the adjusting thread.

[0011] Preferably, the support plate and the limiting ring are perpendicular to each other, and the limiting ring and the limiting groove are in a rotating structure.

[0012] Preferably, the second insertion hole and the first insertion slot are in the same vertical plane, and the bottom end of the clamping block is in a meshing structure with the adjusting thread.

[0013] Preferably, the countersunk screw and the lower cover are in a rotating structure, and the guide rail and the clamping block are in a sliding structure, so that the clamping of the clamping block is more stable.

[0014] The utility model provides a pneumatic polishing machine with an assembled polishing disc structure, which has the advantages that: by providing an auxiliary structure, a countersunk screw is rotated using a special tool to drive the adjusting toothed disc to rotate and then drive the adjusting thread, so that a clamping block threadedly connected to the second jack moves along a guide rail, and by controlling the forward and reverse rotation of the countersunk screw, a plurality of clamping blocks can clamp and unfold the insertion rod inserted into the adjusting thread, so that the adjusting toothed disc and the support plate can be directly pulled out, thereby improving the convenience of replacing and using the polishing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of a three-dimensional partial cross-sectional structure of the filtering structure of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the auxiliary structure of the utility model;

[0018] Figure 4 It is a schematic diagram of a three-dimensional partial expansion structure of the auxiliary structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the three-dimensional disassembly structure of the auxiliary structure of the utility model.

[0020] In the figure: 1. air valve; 2. filtering structure; 201. outer tube; 202. insert tube; 203. filter tube; 204. filter hole; 205. air inlet pipe; 3. pressing plate; 4. switch button; 5. pneumatic shaft sleeve; 6. transmission shaft housing; 7. lower cover; 8. auxiliary structure; 801. sandpaper board; 802. support plate; 803. limit ring; 804. insert rod; 805. limit groove; 806. first slot; 807. transmission gear disc; 808. adjusting thread; 809. second insert hole; 810. adjusting gear disc; 811. countersunk screw; 812. guide rail; 813. clamping block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 5 The utility model provides an assembled polishing disc structure pneumatic polishing machine, including an air valve 1 and a pneumatic rotating shaft sleeve 5, one side of the top of the air valve 1 is flipped and connected with a pressing plate 3, the other side of the top of the air valve 1 is provided with a switch button 4, the other side of the air valve 1 is fixedly connected with a pneumatic rotating shaft sleeve 5, the bottom end of the pneumatic rotating shaft sleeve 5 is fixedly connected with a transmission shaft housing 6, a lower cover 7 is installed below the transmission shaft housing 6, and an auxiliary structure 8 is installed at the bottom end of the lower cover 7, and the auxiliary structure 8 includes a sandpaper board 801, Support plate 802, limiting ring 803, insertion rod 804, limiting groove 805, first slot 806, transmission gear plate 807, adjusting thread 808, second insertion hole 809, adjusting gear plate 810, countersunk screw 811, guide rail 812 and clamping block 813, sandpaper board 801 is installed under the lower cover 7, the top of sandpaper board 801 is fixedly connected with support plate 802, the outer side of the top of support plate 802 is fixedly connected with limiting ring 803, the middle position of the top of support plate 802 A plug rod 804 is fixedly connected at the bottom, a limiting groove 805 is provided on the outer side of the bottom end of the lower cover 7, a first slot 806 is provided at the middle position of the bottom end of the lower cover 7, a transmission gear disc 807 is rotatably connected at the middle position of the bottom end of the lower cover 7, an adjusting thread 808 is provided at the top of the transmission gear disc 807, a second plug hole 809 is provided inside the transmission gear disc 807, an adjusting gear disc 810 is meshed on one side of the transmission gear disc 807, and a countersunk screw 808 is fixedly connected to the top of the adjusting gear disc 810. 11. The top of the lower cover 7 is fixedly connected with a guide rail 812, and the bottom of the guide rail 812 is slidably connected with a clamping block 813. The support plate 802 and the limiting ring 803 are perpendicular to each other, the limiting ring 803 and the limiting groove 805 are in a rotating structure, the second insertion hole 809 and the first insertion slot 806 are in the same vertical plane, the bottom end of the clamping block 813 is in a meshing structure with the adjusting thread 808, the countersunk screw 811 and the lower cover 7 are in a rotating structure, and the guide rail 812 and the clamping block 813 are in a sliding structure.

[0023] See attached Figure 1 , Figure 3 , Figure 4 and Figure 5When the pneumatic polisher is in use, the air pipe connected to the cylinder is connected to the air inlet pipe 205, so that the gas generated by the cylinder can enter the interior of the air valve 1, and by pressing the pressing plate 3 and indirectly pressing the switch button 4, the gas entering the interior of the air valve 1 can enter the interior of the pneumatic rotating shaft sleeve 5. At this time, the starting shaft located inside the pneumatic rotating shaft sleeve 5 can rotate rapidly, and the lower cover 7 drives the sandpaper board 801 to rotate at a high speed, so that the sandpaper board 801 can perform a grinding and polishing operation. Traditionally, the replacement of the sandpaper board 801 often requires the lower cover 7 to be replaced together, and a special wrench needs to be inserted into the gap between the transmission shaft housing 6 and the lower cover 7 for disassembly. For novices, the operation is cumbersome and costly. Therefore, a special wrench is inserted into the lower cover 7 to disassemble the sandpaper board 801. The bottom end is rotatably connected to the transmission toothed disc 807 which can be threadedly connected to the clamping block 813. The countersunk screw 811 is rotated by a special tool to drive the adjusting toothed disc 810 to rotate and then drive the adjusting thread 808, so that the clamping block 813 which is threadedly connected to the second jack 809 is moved along the guide rail 812. By controlling the forward and reverse rotation of the countersunk screw 811, the plurality of clamping blocks 813 can clamp and unfold the insertion rod 804 inserted into the adjusting thread 808, so that the adjusting toothed disc 810 and the support plate 802 can be directly pulled out. Only a small part needs to be replaced during replacement. During installation and use, the rotation structure of the limiting ring 803 and the limiting groove 805 makes the rotation of the sandpaper board 801 more stable to avoid shaking during use.

[0024] A filtering structure 2 is installed on one side of the air valve 1, and the filtering structure 2 includes an outer tube 201, an insert tube 202, a filter tube 203, filter holes 204 and an air inlet pipe 205. The outer tube 201 is installed on one side of the air valve 1, and the insert tube 202 is fixedly connected to one side of the inner part of the outer tube 201, and the filter tube 203 is fixedly connected to the outer side wall of the insert tube 202. Filter holes 204 are opened on one side of the filter tube 203, and the air inlet pipe 205 is fixedly connected to one side of the outer tube 201. A plurality of filter holes 204 are opened inside the filter tube 203, and the plurality of filter holes 204 are distributed in a ring shape on one side of the filter tube 203.

[0025] See attached Figure 1 and Figure 2 When the pneumatic polisher is in use, in order to avoid the presence of impurities in the gas, which may cause excessive rotational wear of the pneumatic shaft inside the pneumatic shaft sleeve 5, a plug 202 is inserted into the connection on one side of the air valve 1, and the cylinder air pipe is connected to the air inlet pipe 205. The gas enters the outer tube 201 through the air inlet pipe 205, and is filtered through the filter hole 204 and then enters the air valve 1 through the plug 202. At this time, impurities in the gas will not enter the interior of the air valve 1 due to the flow inside the outer tube 201 and the filtration of the filter hole 204, thereby avoiding excessive wear due to the entry of impurities such as solid particles in the gas.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pneumatic polishing machine with an assembled polishing disc structure, comprising an air valve (1) and a pneumatic rotating shaft sleeve (5); Features: A filtering structure (2) is installed on one side of the air valve (1); One side of the top of the air valve (1) is flipped and connected to a pressing plate (3), the other side of the top of the air valve (1) is provided with a switch button (4), and the other side of the air valve (1) is fixedly connected to a pneumatic rotating shaft sleeve (5); The bottom end of the pneumatic rotating shaft sleeve (5) is fixedly connected to a transmission shaft housing (6), a lower cover (7) is installed below the transmission shaft housing (6), and an auxiliary structure (8) is installed at the bottom end of the lower cover (7), wherein the auxiliary structure (8) comprises a sandpaper board (801), a support plate (802), a limiting ring (803), an insertion rod (804), a limiting groove (805), a first insertion slot (806), a transmission gear disc (807), an adjustment thread (808), a second insertion hole (809), an adjustment gear disc (810), a countersunk screw (811), a guide rail (812) and a clamping block (813), and the sandpaper board (801) is installed below the lower cover (7).

2. The pneumatic polishing machine with an assembled polishing disc structure according to claim 1, characterized in that: The filtering structure (2) comprises an outer tube (201), an insert tube (202), a filter tube (203), a filter hole (204) and an air inlet pipe (205); the outer tube (201) is installed on one side of the air valve (1); one side of the inner part of the outer tube (201) is fixedly connected to the insert tube (202); the outer side wall of the insert tube (202) is fixedly connected to the filter tube (203); one side of the filter tube (203) is provided with a filter hole (204); and one side of the outer tube (201) is fixedly connected to the air inlet pipe (205).

3. The pneumatic polishing machine with an assembled polishing disc structure according to claim 2, characterized in that: A plurality of filter holes (204) are opened inside the filter tube (203), and the plurality of filter holes (204) are distributed in a ring shape on one side of the filter tube (203).

4. The pneumatic polishing machine with an assembled polishing disc structure according to claim 1, characterized in that: The top of the sandpaper board (801) is fixedly connected to a support plate (802), the outer side of the top of the support plate (802) is fixedly connected to a limiting ring (803), the middle position of the top of the support plate (802) is fixedly connected to an insertion rod (804), the outer side of the bottom of the lower cover (7) is provided with a limiting groove (805), the middle position of the bottom of the lower cover (7) is provided with a first slot (806), and the middle position of the bottom of the lower cover (7) is rotatably connected to a transmission gear disc (806). 807), the top of the transmission gear disc (807) is provided with an adjusting thread (808), the interior of the transmission gear disc (807) is provided with a second plug hole (809), one side of the transmission gear disc (807) is meshed with an adjusting gear disc (810), the top of the adjusting gear disc (810) is fixedly connected with a countersunk screw (811), the top of the interior of the lower cover (7) is fixedly connected with a guide rail (812), and the bottom of the guide rail (812) is slidably connected with a clamping block (813).

5. The pneumatic polishing machine with an assembled polishing disc structure according to claim 4, characterized in that: The support plate (802) and the limiting ring (803) are perpendicular to each other, and the limiting ring (803) and the limiting groove (805) are in a rotating structure.

6. The pneumatic polishing machine with an assembled polishing disc structure according to claim 4, characterized in that: The second insertion hole (809) and the first insertion slot (806) are located in the same vertical plane, and the bottom end of the clamping block (813) is in a meshing structure with the adjusting thread (808).

7. The pneumatic polisher with an assembled polishing disc structure according to claim 4, characterized in that: The countersunk screw (811) and the lower cover (7) are in a rotating structure, and the guide rail (812) and the clamping block (813) are in a sliding structure.

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