CN208117493U - A dust-removing double-action flat grinder - Google Patents

Abstract

The utility model discloses a dust type double acting flat grinding machine, including the host computer body, be provided with the protection casing on the host computer body, the protection casing encloses into an opening cavity down, and rotatable being provided with is used for installing the mount pad of grinding piece on the host computer body, and the mount pad can be rotated for the host computer body by a drive arrangement drive, and the mount pad part or whole accept in the cavity, still is provided with the dust absorption pipe that is linked together with the cavity on the host computer body. Use the utility model discloses before polishing the work piece, earlier with dust absorption pipe and outside air exhaust device intercommunication, then start air exhaust device, can avoid the dust to fly upward and the polluted environment through the dust absorption pipe dust absorption that the operation in-process produced of will polishing, be favorable to operating personnel's healthy.

Description

A dust-removing double-action flat grinder

technical field

The utility model relates to the technical field of grinding equipment, in particular to a dust removal type double-action flat grinder.

Background technique

A flat grinder is a device used to smooth the surface of an object. In industrial production activities, it is inevitable to use a flat grinder for products that need to ensure surface finish or flatness. The use of the flat grinder will inevitably cause dust to fly everywhere, which will not only endanger the health of the operator, but also pollute the environment.

Utility model content

In view of this, the purpose of the utility model is to provide a dust-removing double-action flat grinder that does not fly up and pollute the environment.

The technical scheme that the utility model adopts for solving its technical problem is:

A dust-removing double-action flat grinder, comprising a main body, on which a protective cover is arranged, the protective cover encloses a cavity with an opening facing downwards, and the main body is rotatably provided with a The mounting seat of the grinding piece, the mounting seat is driven by a driving device and can rotate relative to the main body, the mounting seat is partially or completely accommodated in the cavity, and the main body is also provided with A dust suction pipe communicated with the cavity.

Preferably, an eccentric shaft is connected to the output end of the driving device, and the driving device drives the mounting seat to rotate eccentrically through the eccentric shaft.

Preferably, the mounting seat is roughly disc-shaped, the diameter of the mounting seat is 4 inches to 7 inches, and the eccentric size of the mounting seat is 1.25 mm to 6 mm.

Preferably, the mounting seat is roughly disc-shaped, the upper part of the mounting seat is accommodated in the cavity, the bottom of the mounting seat protrudes downwards to the outside of the cavity, and the grinding part is fixed Sandpaper installed on the underside of the mount.

Preferably, the mounting base is provided with a dust discharge hole penetrating up and down.

Preferably, a dust-proof brush extending downward is provided at the lower edge of the protective cover, and the lower ends of the bristles of the dust-proof brush are substantially flush with the bottom surface of the mounting base.

Preferably, the main body is further provided with an air inlet channel communicating with the cavity.

Preferably, the driving device is an air motor, and the switch of the air motor is a normally open switch.

The beneficial effect of the utility model is: before using the utility model to polish workpieces, first connect the dust suction pipe to the external air extraction device, and then start the air suction device, and the dust generated during the grinding operation can be sucked out through the dust suction pipe , to avoid dust flying and pollute the environment, which is beneficial to the health of operators.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is an exploded view of the utility model;

Fig. 3 is a sectional view of the eccentric shaft in the utility model;

Fig. 4 is a schematic diagram of the rotation route of the points on the mount.

Detailed ways

Referring to Figures 1 to 4, a dust removal type double-action flat grinder includes a main body 1, on which a protective cover 2 is arranged, and the protective cover 2 forms a cavity 20 with an opening facing downwards, on the main body 1 It is rotatably provided with a mounting seat 3 for installing grinding parts. The mounting seat 3 is driven by a driving device and can rotate relative to the main body 1. The mounting seat 3 is partially or completely accommodated in the cavity 20. On the main body 1 A dust suction pipe 4 communicating with the cavity 20 is also provided. Before using the utility model to polish workpieces, first connect the dust suction pipe 4 with the external air extraction device, and then start the air suction device, and the dust generated during the grinding operation can be sucked through the dust suction pipe 4 to avoid dust flying and pollution The environment is conducive to the health of operators.

In this embodiment, an eccentric shaft 5 is connected to the output end of the driving device, and the driving device drives the mounting seat 3 to rotate eccentrically through the eccentric shaft 5 . Referring to Fig. 3, the eccentric shaft 5 is provided with a mounting shaft 51 and a mounting hole 52, the axes of the mounting shaft 51 and the mounting hole 52 are parallel to each other and not collinear, and the mounting seat 3 is coaxially installed in the mounting hole 52, and the driving device The output end is coaxial with the installation shaft 51 . In industrial applications, the mounting seat 3 is roughly disc-shaped, and the distance between the axis of the mounting shaft 51 and the axis of the mounting hole 52 should be between 1.5 mm and 6 mm (that is, the eccentric size of the mounting seat 3 ). The diameter of the commonly used mounting seat 3 It is 4 inches to 7 inches. Generally speaking, the eccentric dimension of the mounting seat 3 is positively related to the diameter of the mounting seat 3. For example, the eccentric dimension of the mounting seat 3 with a diameter of 4 inches can be 1.5 mm to 2.5 mm, and the mounting seat 3 with a diameter of 7 inches. Its eccentric size can be 4.5 mm to 6 mm, and the specific eccentric size should be adjusted according to the shape and counterweight of the eccentric shaft 5 .

The upper part of the mounting base 3 is accommodated in the cavity 20 , the bottom of the mounting base 3 protrudes downwards to the outside of the cavity 20 , and the abrasive part is sandpaper that can be fixedly mounted on the bottom surface of the mounting base 3 . The back side of the sandpaper is generally a wool fabric, and an attachment structure similar to Velcro can be set on the bottom surface of the mounting base 3, and the sandpaper is fixed on the bottom surface of the mounting base 3 through these attachment structures. During the grinding operation, the mounting seat 3 rotates eccentrically relative to the main body 1, so that all points on the lower surface of the sandpaper can be fully utilized to grind the workpiece, the surface of the workpiece can be polished more smoothly, and the frictional heat generation speed of the workpiece can be reduced.

In order to further improve the dust removal effect, the mounting base 3 is provided with a dust discharge hole 30 penetrating up and down. Correspondingly, the sandpaper used in the present invention should also be provided with a through hole corresponding to the above dust discharge hole 30 . During the grinding operation, the dust generated in the middle of the sandpaper can enter the cavity 20 through the dust discharge hole 30, and then be sucked away by the above-mentioned dust suction pipe 4. In order to further improve the dust removal effect, a dust-proof brush 6 extending downward is provided at the lower edge of the protective cover 2 , and the lower ends of the bristles of the dust-proof brush 6 are substantially flush with the bottom surface of the mounting base 3 . During the grinding operation, the dust generated at the outer edge of the sandpaper will be thrown outwards, and these dusts can be limited in the cavity 20 by the dust-proof brush 6 to prevent the dust from spreading outwards.

In order to form convection in the cavity 20 , the main body 1 is also provided with an air inlet channel 60 communicating with the cavity 20 . The air inlet passage 60 can be arranged on the protective cover 2 or on the dustproof brush 6 .

In this embodiment, the driving device is an air motor 7 , and the switch of the air motor 7 is a normally open switch 71 . When using the utility model to polish workpieces, the normally open switch 71 needs to be pressed all the time. Once the operator lets go, the air motor 7 will stop rotating immediately, which is safe.

The above are only the preferred implementation modes of the utility model, as long as the technical solutions to achieve the purpose of the utility model by basically the same means all fall within the protection scope of the utility model.

Claims (8)

1. A dust-removing type double-action flat grinder, characterized in that it comprises a main body (1), and a protective cover (2) is arranged on the main body (1), and an opening is surrounded by the protective cover (2) Downward cavity (20), the main body (1) is rotatably provided with a mounting seat (3) for installing grinding parts, and the mounting seat (3) is driven by a driving device so as to be relatively The main body (1) rotates, and the mounting seat (3) is partly or completely accommodated in the cavity (20), and the main body (1) is also provided with the cavity (20) Connected suction pipe (4). 2. A dust-removing double-action flat grinder according to claim 1, characterized in that an eccentric shaft (5) is connected to the output end of the driving device, and the driving device passes through the eccentric shaft (5) Drive the mounting seat (3) to rotate eccentrically. 3. A dust-removing double-action flat grinder according to claim 2, characterized in that the mounting seat (3) is disc-shaped, and the diameter of the mounting seat (3) is 4 inches to 7 inches , the eccentric dimension of the mounting seat (3) is 1.25mm-6mm. 4. A dust-removing double-action flat grinder according to claim 1, characterized in that, the mounting seat (3) is disc-shaped, and the upper part of the mounting seat (3) is accommodated in the cavity In (20), the bottom of the mounting seat (3) protrudes downwards to the outside of the cavity (20), and the grinding member is sandpaper that can be fixedly installed on the bottom surface of the mounting seat (3). 5 . The dust-removing double-action flat grinder according to claim 4 , characterized in that, the mounting base ( 3 ) is provided with a dust discharge hole ( 30 ) penetrating up and down. 6 . 6. A dust-removing double-action flat grinder according to claim 4, characterized in that, a dust-proof brush (6) extending downward is provided at the lower edge of the protective cover (2), and the dust-proof brush (6) The lower end of the bristles of the dust brush (6) is flush with the bottom surface of the mounting seat (3). 7. A dust-removing double-action flat grinder according to claim 1, characterized in that, the main body (1) is also provided with an air inlet channel (60) communicating with the cavity (20) ). 8. A dust-removing double-action flat grinder according to claim 1, characterized in that the drive device is an air motor (7), and the switch of the air motor (7) is a normally open switch (71 ).