CN219075251U

CN219075251U - Clamp type pneumatic grinder

Info

Publication number: CN219075251U
Application number: CN202223421240.8U
Authority: CN
Inventors: 杨玉丰
Original assignee: Jiangsu Junma Pneumatic Technology Co ltd
Current assignee: Jiangsu Junma Pneumatic Technology Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-26
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a chuck type pneumatic grinder which comprises an air pump, a main air inlet pipe, a dust collection box, a sleeve, a push switch, a pneumatic motor and a clamping head, wherein the pneumatic motor and the clamping head are arranged in the sleeve. According to the utility model, the compressed air circulates at the transverse part of the second three-way joint, so that negative pressure is generated at the junction of the vertical part and the transverse part of the second three-way joint, dust is collected through the dust collection pipe and the dust collection nozzle, the air inlet flow of the first branch pipe and the second branch pipe can be regulated by the regulating valve, so that the compressed air is better distributed, the dust collection pipe is made of thin-wall flexible metal, the dust collection range can be conveniently regulated, the front cover is arranged at the upper end of the sleeve, the convex ring made of rubber is arranged at the end far from the front cover, and the pressing switch is not contacted with the placing surface when the dust collection pipe is placed on a plane at any angle by limiting the size of the front cover, so that the situation of false start is effectively avoided.

Description

Clamp type pneumatic grinder

Technical Field

The utility model relates to the technical field of chuck pneumatic grinding machines, in particular to a chuck pneumatic grinding machine with a dust collection function and an error collision prevention effect.

Background

The pneumatic grinder is a pneumatic tool for processing parts by driving a pneumatic motor to rotate through compressed air, the pneumatic motor drives a grinding wheel to rotate, the grinding wheel is installed on the chuck type pneumatic grinder in a clamping mode, the current common chuck type pneumatic grinder is also called an air grinding pen, and the following problems exist in use:

1. dust generated during polishing is required to be additionally provided with dust removing equipment for removing dust, so that the dust is inconvenient, the problem of additionally preparing dust removing equipment is avoided by adopting waste gas discharged by a pneumatic motor in the prior art, but actual use finds that the waste gas discharged by a starting motor basically has no air pressure, and the dust removing effect cannot be achieved;

2. the pneumatic motor is ventilated and pneumatically operated after being pressed by the pressing switch, and the pressing switch is generally arranged on the outer wall of the sleeve, so that the advantages of starting the pressing ventilation and loosening the air-break closing are achieved, but after the pressing switch is used once, the pressing switch is placed on a desk surface without paying attention to the direction of the pressing switch, and the pressing switch is enabled to be triggered to ventilate by self weight just when the pressing switch is placed downwards on the desk surface, so that unexpected conditions are caused.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a chuck type pneumatic grinder.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a pneumatic grinder of clamp head type, includes air pump, main intake pipe, dust collection box, sleeve, push switch, sets up at the inside pneumatic motor of sleeve and clamping head, sleeve upper end fixedly connected with protecgulum, pneumatic motor stretches out the axle and runs through the protecgulum and stretch out to the protecgulum top, clamping head fixed connection is at pneumatic motor stretches out the axle tip, protecgulum upper wall just is located clamping head front side fixedly connected with connector, the connector upper end is provided with dust absorption structure, the connector lower extreme runs through the protecgulum upper wall and stretches into to the protecgulum inside, the connector stretches into the inside one end fixedly connected with second three-way connection of protecgulum, the second three-way connection is the T style of calligraphy, second three-way connection is located the terminal interface and the connector fixed connection of T style of calligraphy vertical part, the one end fixedly connected with first three-way connection of main intake pipe orientation telescopic, the one end and air pump fixed connection of first three-way connection keep away from first three-way connection, two other export fixedly connected with first branch pipes, second branch pipe, first branch pipe and first three-way connection are located the first three-way connection, the first three-way connection is kept away from between first three-way connection and the first three-way connection, three-way connection is kept away from first three-way connection, three-way connection has a T connection, and the first three-way connection is kept away from the first three-way connection, and is located the first three-way connection.

As a further description of the above technical solution: the sleeve overlook the cross-section and be oval and left and right directions are long end, the distance between the relative limit of protecgulum overlook projection is the double of sleeve maximum external diameter.

As a further description of the above technical solution: the inner wall of the sleeve and the left and right sides of the pneumatic motor are respectively provided with a group of vertical holes, one sides, close to one ends of the front cover, of the vertical holes are respectively provided with a group of transverse holes which are internally and externally communicated, and one ends, facing the second three-way joint, of the first branch pipe and the air return pipe are respectively paved along the two groups of transverse holes and the vertical holes.

As a further description of the above technical solution: the sleeve is provided with a convex ring in a sleeved mode on the outer wall of one end, far away from the front cover, of the sleeve, and the convex ring is made of rubber.

As a further description of the above technical solution: the flow regulating structure comprises two groups of regulating valves, the two groups of regulating valves are respectively and fixedly connected between a first branch pipe and a first three-way joint and between a second branch pipe and the first three-way joint, and the front parts of the two groups of regulating valves are respectively provided with regulating knobs.

As a further description of the above technical solution: the dust collection structure comprises a dust collection pipe and a dust collection nozzle, wherein the dust collection pipe is detachably connected to the upper end of the connecting head, the dust collection nozzle is detachably connected to one end, far away from the connecting head, of the dust collection pipe, and the dust collection pipe is a thin-wall flexible metal pipe and the inner side wall of the thin-wall flexible metal pipe is smooth.

As a further description of the above technical solution: the outer wall of one end of the main air inlet pipe and the air return pipe, which is far away from the sleeve, is sleeved with a sleeve together, and the sleeve is a PP corrugated pipe.

The utility model has the following beneficial effects:

1. compared with the prior art, the chuck type pneumatic grinder has the advantages that compressed air fed by the main air inlet pipe is fed into the cylinder body through the first three-way joint in one part, the pneumatic motor is driven by the cylinder body through the first three-way joint in one part, the second three-way joint is fed into the first three-way joint in one part, negative pressure is generated at the joint of the vertical part and the horizontal part of the second three-way joint through the compressed air, dust is sucked through the dust suction pipe and the dust suction nozzle, the air inlet flow of the first branch pipe and the second branch pipe can be regulated through the regulating valve, so that the compressed air is better distributed, the dust suction pipe is made of thin-wall flexible metal, and the dust suction range can be conveniently regulated.

2. Compared with the prior art, the chuck type pneumatic grinder is characterized in that the front cover is arranged at the upper end of the sleeve, the convex ring made of rubber is arranged at one end far away from the front cover, and the size of the front cover is limited, so that the pressing switch can not contact the placing surface when the chuck type pneumatic grinder is placed on a plane at any angle, and the situation of false start is effectively avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of a chuck type pneumatic grinder according to the present utility model;

FIG. 2 is a schematic view of a partial structure of a sleeve and a front cover of a chuck type pneumatic grinder according to the present utility model;

FIG. 3 is a schematic top view of a sleeve of a chuck type pneumatic grinder according to the present utility model;

fig. 4 is a schematic sectional view of a partial structure of a transverse hole and a vertical hole in a sleeve of a chuck type pneumatic grinder according to the present utility model.

Legend description:

1. a sleeve; 2. pressing the switch; 3. a front cover; 4. a clamping head; 5. a sleeve; 6. a main air inlet pipe; 7. a first three-way joint; 8. a regulating valve; 9. an adjustment knob; 10. a first branch pipe; 11. a connector; 12. a dust collection pipe; 13. a dust suction nozzle; 14. an air return pipe; 15. a second branch pipe; 16. a second three-way joint; 17. a vertical hole; 18. a transverse hole; 19. a convex ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the chuck type pneumatic grinder provided by the utility model comprises: the pneumatic motor grinding wheel grinding machine comprises an air pump, a main air inlet pipe 6, a dust collection box, a sleeve 1, a push switch 2, a pneumatic motor and a clamping head 4, wherein the pneumatic motor and the clamping head 4 are arranged in the sleeve 1, the front cover 3 is fixedly connected to the upper end of the sleeve 1, an extension shaft of the pneumatic motor penetrates through the front cover 3 and extends to the upper part of the front cover 3, the clamping head 4 is fixedly connected to the end part of the extension shaft of the pneumatic motor, a grinding wheel is clamped through the clamping head 4, and the pneumatic motor rotates in a ventilation way to drive the clamping head 4 to rotate so as to drive the grinding wheel to rotate;

the front cover 3 is provided with a connecting head 11 on the upper wall and positioned at the front side of the clamping head 4, the upper end of the connecting head 11 is provided with a dust collection structure, the dust collection structure comprises a dust collection pipe 12 and a dust collection nozzle 13, the dust collection pipe 12 is detachably connected to the upper end of the connecting head 11, the dust collection nozzle 13 is detachably connected to one end of the dust collection pipe 12, which is far away from the connecting head 11, the dust collection pipe 12 is a thin-wall flexible metal pipe, the inner side wall of the thin-wall flexible metal pipe is smooth, the thin-wall flexible metal pipe can easily adjust the dust collection range, and the smooth inner side wall can enable dust to be more easily sent away;

the lower end of the connector 11 penetrates through the upper wall of the front cover 3 and extends into the front cover 3, one end of the connector 11 extending into the front cover 3 is fixedly connected with a second tee joint 16, the second tee joint 16 is T-shaped, an interface of the second tee joint 16 at the tail end of the T-shaped vertical part is fixedly connected with the connector 11, one end of the main air inlet pipe 6, which faces the sleeve 1, is fixedly connected with a first tee joint 7, one end of the main air inlet pipe 6, which is far away from the first tee joint 7, is fixedly connected with an air pump, the other two outlets of the first tee joint 7, which are far away from the main air inlet pipe 6, are respectively fixedly connected with a first branch pipe 10 and a second branch pipe 15, one end of the second branch pipe 15, which is far away from the first tee joint 7, is fixedly connected with one end of the sleeve 1, which is far away from the front cover 3, one end of the first branch pipe 10 far away from the first tee joint 7 is fixedly connected with a port of the second tee joint 16 positioned at the left side of the T-shaped transverse part, the second tee joint 16 is far away from the connector 11, the other port of the first branch pipe 10 is fixedly connected with an air return pipe 14, the end part of the air return pipe 14 far away from the second tee joint 16 is fixedly connected with a dust box, compressed air entering through the main air inlet pipe 6 is distributed through the first tee joint 7, a part of the compressed air enters the sleeve 1 through the second branch pipe 15 to drive a pneumatic motor, a part of the compressed air enters the second tee joint 16 through the first branch pipe 10 and is sent to the dust box from the air return pipe 14, negative pressure is formed on the inner side wall of the vertical part of the second tee joint 16 when the compressed air passes through the second tee joint 16, and dust is adsorbed from the dust suction pipe 12 and the dust suction nozzle 13;

the top view cross section of the sleeve 1 is elliptical, the left and right directions are long ends, the distance between the opposite sides of the top view projection of the front cover 3 is twice the maximum outer diameter of the sleeve 1, a convex ring 19 is sleeved on the outer wall of one end of the sleeve 1, which is far away from the front cover 3, the convex ring 19 is made of rubber, and the front cover 3 and the convex ring 19 with limited sizes prevent the press switch from being touched by a placing surface in any direction of the grinder;

a group of vertical holes 17 are respectively formed in the inner wall of the sleeve 1 and positioned at the left side and the right side of the pneumatic motor, a group of transverse holes 18 which are internally and externally communicated are respectively formed in one side, close to one end of the front cover 3, of each of the two groups of vertical holes 17, one end, facing the second three-way joint 16, of each of the first branch pipes 10 and the air return pipes 14 is paved along the two groups of transverse holes 18 and the vertical holes 17, and the first branch pipes 10 and the air return pipes 14 are positioned on the outer wall of the section of the sleeve 1 to be accommodated by arranging the vertical holes 17 and the transverse holes 18, so that the operation of the handheld grinder can not be influenced;

the flow regulating structure is arranged between the first tee joint 7 and the first branch pipe 10 and between the first branch pipe 15 and the second branch pipe 15, and comprises two groups of regulating valves 8, the two groups of regulating valves 8 are respectively and fixedly connected between the first branch pipe 10 and the first tee joint 7 and between the second branch pipe 15 and the first tee joint 7, regulating knobs 9 are arranged at the front parts of the two groups of regulating valves 8, and the flow of compressed air can be regulated by rotating the regulating knobs 9, so that the compressed air can be well distributed between the first branch pipe 10 and the second branch pipe 15;

the outer wall of one end of the main air inlet pipe 6 and the air return pipe 14 far away from the sleeve 1 is sleeved with the sleeve 5, the sleeve 5 is a PP corrugated pipe, and the sleeve 5 can protect the main air inlet pipe 6 and the air return pipe 14 and avoid abrasion and air leakage during dragging.

Working principle: through the centre gripping head 4 centre gripping emery wheel, pneumatic motor ventilation rotation drives centre gripping head 4 rotation, and then drive the emery wheel rotation, the compressed air that gets into through main intake pipe 6 distributes through first three way connection 7, a portion gets into sleeve 1 through second branch pipe 15 and drives pneumatic motor, a portion gets into second three way connection 16 through first branch pipe 10 and send to the dust collection box from muffler 14, when compressed air passes through second three way connection 16, form the negative pressure at the vertical portion inside wall of second three way connection 16, and then adsorb the dust from dust absorption pipe 12, dust absorption mouth 13, the dust absorption pipe 12 that thin wall type flexible metal tube made makes can be comparatively easy adjust dust absorption scope, smooth inside wall makes the dust more sent away, through protecgulum 3 and bulge loop 19 of inject the size, make the free direction of abrasive machine prevent that the press switch from being touched by the face of placing when on the plane, through setting up vertical hole 17, horizontal hole 18 will first branch pipe 10, the muffler 14 is located the outer wall of sleeve 1 section accomodates, can not influence the handheld turbine operation, sleeve 5 can protect main intake pipe 6, the back-up when the back-draft pipe 14 causes the wearing and tearing.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a pneumatic grinder of clamp formula, includes air pump, main intake pipe (6), dust collection box, sleeve (1), push switch (2), sets up at inside air motor and the clamping head (4) of sleeve (1), its characterized in that: the utility model discloses a pneumatic motor, including sleeve (1) and main air inlet pipe (6), sleeve (1) upper end fixedly connected with protecgulum (3), pneumatic motor extension shaft runs through protecgulum (3) and stretches out to protecgulum (3) top, clamping head (4) fixed connection is at pneumatic motor extension shaft tip, protecgulum (3) upper wall just is located clamping head (4) front side fixedly connected with connector (11), connector (11) upper end is provided with dust extraction structure, connector (11) lower extreme runs through protecgulum (3) upper wall and stretches into protecgulum (3) inside, connector (11) stretch into the inside one end fixedly connected with second tee bend joint (16) of protecgulum (3), second tee bend joint (16) are the T style of calligraphy, second tee bend joint (16) are located the terminal interface and connector (11) fixed connection of T style of calligraphy vertical part, main air inlet pipe (6) are towards sleeve (1) one end fixedly connected with first tee bend joint (7), main air inlet pipe (6) keep away from first tee bend joint (7) one end and fixed connection, first air inlet pipe (7) and second tee bend (10) are kept away from between two branch air pump (10) and the first branch air inlet pipe (10) respectively, the one end that first tee bend joint (7) was kept away from to second tee bend pipe (15) and sleeve (1) are kept away from the one end fixed connection of protecgulum (3), the one end that first tee bend joint (7) was kept away from to first tee bend pipe (10) and second tee bend joint (16) are located the left interface fixed connection of T style of calligraphy horizontal part, connector (11) are kept away from to second tee bend joint (16), another interface fixedly connected with muffler (14) of first tee bend pipe (10), the tip and dust collection box fixed connection that second tee bend joint (16) were kept away from to muffler (14).

2. The chuck pneumatic grinder of claim 1, wherein: the top-view cross section of the sleeve (1) is elliptical, the left and right directions are long ends, and the distance between the opposite sides of the top-view projection of the front cover (3) is twice the maximum outer diameter of the sleeve (1).

3. The chuck pneumatic grinder of claim 2, wherein: the inner wall of the sleeve (1) and the left and right sides of the pneumatic motor are respectively provided with a group of vertical holes (17), one sides, which are close to one ends of the front cover (3), of the vertical holes (17) are respectively provided with a group of transverse holes (18) which are communicated with each other inside and outside, and one ends, which face the second three-way joint (16), of the first branch pipe (10) and the return pipe (14) are respectively paved along the two groups of transverse holes (18) and the vertical holes (17).

4. A chuck pneumatic grinder as in claim 3, wherein: the outer wall of one end of the sleeve (1) far away from the front cover (3) is sleeved with a convex ring (19), and the convex ring (19) is made of rubber.

5. The chuck pneumatic grinder as set forth in claim 4, wherein: the flow regulating structure comprises two groups of regulating valves (8), the two groups of regulating valves (8) are respectively and fixedly connected between a first branch pipe (10) and a first three-way joint (7) and between a second branch pipe (15) and the first three-way joint (7), and regulating knobs (9) are respectively arranged at the front parts of the two groups of regulating valves (8).

6. The chuck pneumatic grinder as set forth in claim 5, wherein: the dust collection structure comprises a dust collection pipe (12) and a dust collection nozzle (13), wherein the dust collection pipe (12) is detachably connected to the upper end of the connector (11), the dust collection nozzle (13) is detachably connected to one end, far away from the connector (11), of the dust collection pipe (12), and the dust collection pipe (12) is a thin-wall flexible metal pipe and the inner side wall of the thin-wall flexible metal pipe is smooth.

7. The chuck pneumatic grinder of claim 6, wherein: the outer wall of one end of the main air inlet pipe (6) and the air return pipe (14) far away from the sleeve (1) is sleeved with a sleeve (5), and the sleeve (5) is a PP corrugated pipe.