TWI435774B - Grinding machine tool dust cover - Google Patents

Description

Dust cover for grinding machine

The invention relates to a dust collecting cover, in particular to a dust collecting cover suitable for removing a large amount of dust.

In the surface grinding operation, the grinding process is usually performed by a machine tool. The machine tool usually has an electric motor and a grinding disc. The bottom of the grinding disc is provided with a corresponding sandpaper, and the electric motor drives the grinding disc to perform a rotation. The stroke, which grinds the surface of the object with the sandpaper rotated at a high speed.

Dust is generated during high-speed grinding, so an outer cover is usually disposed above the grinding disc, and the outer cover is connected to an air extracting device to remove the dust generated by the grinding. For example, in the U.S. Patent No. US 2005/0202769, the prior case is an improved grinding disc structure of a grinder. The grinding disc is connected to a dust hood of a grinder, and the outer edge forms a contact surface and is provided with a plurality of axially extending air holes and a plurality of radial air holes communicating with the axial through holes. Then, the grinding disc assembly is assembled into the accommodating space of the body of the grinding machine, that is, the driving shaft inside the accommodating space is used, the fixing portion of the grinding disc can be assembled and fixed, and the grinding disc is driven by the driving shaft, and the grinding can be performed. After the fines and dust, it is quickly absorbed through the plurality of pores provided on the surface of the grinding disc, thereby achieving the effect of vacuuming.

However, when a large-area surface grinding operation (such as a large-area table top, a wall surface, a floor surface, etc.) is performed using the above-mentioned machine tool, a large amount of dust is generated during high-speed grinding, and the dust flow of the plurality of air holes of the above-mentioned machine tool is insufficient. Eliminate such a large amount of powder at any time Dust, which makes it difficult to vacuum, must use a large vacuum equipment to suck the dust away, and may even block the multiple pores. In view of this, the inventors of the present invention have devoted themselves to the development of a structure that can improve the above problems.

The main object of the present invention is to improve the problem that a large amount of dust cannot be immediately removed when high-speed grinding or large-area grinding is performed.

In order to achieve the above object, the present invention provides a dust collecting hood of a grinding machine tool, which is mounted on a grinding machine comprising a driving motor, at least one grinding portion driven by the driving motor for rotating stroke, and a dust collecting cover that accommodates the grinding portion, the dust collecting cover includes a peripheral wall surrounding the polishing portion and a dust collecting cover body connected to the peripheral wall and forming the grinding portion with the peripheral wall A collection of dust spaces. The dust collecting cover comprises a top fixed to the grinding machine, the height of the dust collecting space decreases along the top to the peripheral wall, and the dust collecting cover further comprises a tapering from the peripheral wall to the top a beveling surface, a dust-discharging opening disposed in the inclined surface to communicate with the dust collecting space, and a flow guiding portion formed on the inclined surface and extending from the dust-discharging opening to the peripheral wall, the guiding portion facing away from the dust collecting The direction of the space is recessed to guide the flow of the dust collecting space to the dust exhaust opening.

Further, the abrasive machine tool includes a plurality of abrasive portions having the same horizontal position.

Further, the polishing machine includes a fan portion disposed between the polishing portion and the dust collecting cover and connected to the driving motor.

Further, the abrasive portions have the same size.

Further, the abrasive portions have the same weight.

Further, the flow guiding portion is radially disposed on the dust collecting cover with the top portion as a center.

Further, the flow guiding portion is spirally arranged on the dust collecting cover with the top portion as a center.

Further, the top portion includes a fastening member connected to the grinding machine tool and an adjusting member pivoting the fastening member and adjusting the fastening degree of the fastening member.

An advantageous effect of the present invention is that, when the high-speed polishing or the large-area polishing operation is performed by the flow guiding portion of the dust collecting cover, a large amount of dust generated by the polishing is concentrated and guided through the flow guiding portion. The dust exhaust opening is discharged. Moreover, the design of the dust collecting cover is tapered such that the height of the dust collecting space decreases along the direction from the top to the peripheral wall, thereby helping the dust to concentrate to the flow guiding portion and passing through the guiding portion. The dust exhaust opening at the end discharges the dust. In addition, the fan portion and the blade portion of the polishing machine tool are designed to be rotated by the driving motor when the polishing machine performs the polishing process, and the electric fan generally blows a large amount of dust generated by the grinding, in combination with the above. The design of the flow guiding portion and the dust collecting cover body can easily and smoothly remove a large amount of dust generated by high-speed grinding or large-area grinding from the dust-discharging opening, and solve the problem that the conventional grinding tool machine generates a large amount of high-speed grinding or large-area grinding. Dust can't immediately eliminate the problem smoothly.

1‧‧‧Drive motor

2‧‧‧ Grinding Department

3‧‧‧ dust cover

31‧‧‧Week wall

32‧‧‧ dust cover

321‧‧‧ top

322‧‧‧tight fasteners

323‧‧‧Adjustment

33‧‧‧Dust space

34‧‧‧Dust opening

35‧‧‧Drainage Department

4‧‧‧Connecting Department

41‧‧‧Face

42‧‧‧Fan Department

5‧‧‧Dust collector

Figure 1 is a schematic view showing the use of a dust collecting hood of the abrasive machine tool of the present invention.

Figure 2 is a top plan view of the dust collecting hood of the abrasive power tool of the present invention.

Fig. 3 is a bottom plan view showing the dust collecting hood of the abrasive working machine of the present invention.

Figure 4 is a schematic view showing the flow direction of the dust collecting hood of the abrasive machine tool of the present invention.

Fig. 5 is a schematic view showing the dust removal of the dust collecting hood of the abrasive working machine of the present invention.

Figure 6 is a cross-sectional view showing another embodiment of the dust collecting hood of the abrasive power tool of the present invention.

The detailed description and the technical content of the present invention will now be described with reference to the drawings. Please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are schematic diagrams of the use of the dust collecting cover of the grinding machine of the present invention, a top view of the appearance and a bottom view of the appearance. As shown in the figure, the present invention is a dust collecting hood of a grinding machine tool, which is mounted on a grinding machine comprising a driving motor 1 and at least one grinding driven by the driving motor 1 for a rotary stroke. And a dust collecting cover 3 accommodating the polishing portion 2, the dust collecting cover 3 includes a peripheral wall 31 surrounding the polishing portion 2 and a dust collecting cover 32, and the dust collecting cover 32 is connected thereto The peripheral wall 31 and the peripheral wall 31 form a dust collecting space 33 in which the polishing portion 2 is accommodated. The dust collecting cover 32 includes a top portion 321 fixed to the grinding machine. The height of the dust collecting space 33 decreases along the direction from the top portion 321 to the peripheral wall 31. The dust collecting cover 32 further includes a self-cleaning cover body 32. a sloped surface of the peripheral wall 31 that is tapered toward the top portion 321 , a dust exhaust opening 34 disposed in the inclined surface communicating with the dust collecting space 33 , and a diversion flow formed on the inclined surface and extending from the dust exhaust opening 34 to the peripheral wall 31 In the portion 35, the flow guiding portion 35 is recessed in a direction away from the dust collecting space 33 to guide the airflow of the dust collecting space 33 to the dust discharging opening 34. The above structure is the basic structure of the present invention.

In addition, in the present invention, the drive motor 1 can be a pneumatic motor or an electric motor, and the dust discharge opening 34 is connected to a dust suction device 5, and the dust suction device guides a large amount of dust guided by the guide portion 35 to the dust discharge opening 34. discharge. And the top 321 contains one and the research The fastening member 322 of the grinding machine tool and the adjusting member 323 pivotally connected to the fastening member 322 and adjusting the fastening degree of the fastening member 322, when assembled with the grinding machine, the dust collecting cover 3 is tightened The fastener 322 is fixed to the grinding machine. In addition, in an embodiment of the present invention, the grinding machine includes a plurality of plurality of polishing portions 2 having the same horizontal position, and the polishing portions 2 have the same size and the same weight, so that the polishing machine performs the grinding stroke. The polishing portions 2 are balanced and smoothly rotated. Since the polishing portions 2 have a distance with respect to the center of the rotation stroke, the polishing portions 2 are rotated along a track of a larger radius to reinforce the polishing area and the polishing force of the polishing machine tool, and the polishing speed is extremely fast. And produce a lot of dust. Moreover, the polishing machine includes a plurality of connecting portions 4 connected to the polishing portions 2, and a plurality of blade portions 41 respectively disposed on the connecting portions 4, and the blade portions 41 are in the grinding machine When the polishing stroke is performed, the driving motor 1 is driven to rotate, and an electric fan generally blows a large amount of dust generated by the grinding. In addition, the flow guiding portion 35 may be disposed on the dust collecting cover 32 with the top portion 321 as a center, or the spiral guiding member may be spirally disposed around the top portion 321 in the dust collecting cover. 32, but not limited thereto, any structure which is based on the structure of the present invention and which is simply changed or replaced is within the scope of the present invention.

Please refer to FIG. 4 and FIG. 5 , which are schematic diagrams of the flow direction of the dust collecting cover of the grinding machine of the present invention and a schematic diagram for eliminating dust, as shown in the figure: during the grinding operation of the grinding machine, a large amount of dust is generated by high-speed grinding. The two slopes of the present invention: one slope of the dust collecting cover 32 inclined from the top portion 321 toward the peripheral wall 31, which can guide the rotating updraft to concentrate toward the center with the dust, and the other slope is a spiral slope In this case, the flow guiding portion 35, the flow guiding portion 35 rises in a direction from the low to the high in the direction of the upward airflow, forming a spiral rising tunnel and a rotating ascending airflow. Naturally, it is guided to move along the spiral type ascending tunnel of the flow guiding portion 35 to bring the dust to the trailing end of the flow guiding portion 35. The dust collecting cover 32 is provided at the end of the flow guiding portion 35, and the dust discharging opening 34 is connected to a dust collecting device 5, and the dust collecting device 5 is guided by the guiding portion 35. A large amount of dust introduced to the dust exhaust opening 34 is eliminated.

6 is a cross-sectional view showing another embodiment of the dust collecting cover of the abrasive working machine of the present invention. As shown in the figure, in another embodiment of the present invention, the grinding machine includes a large-area grinding portion 35 and A fan unit 42 provided between the polishing unit 35 and the dust collecting cover 32 and connected to the drive motor 1 is provided. When the polishing machine performs the polishing operation, the driving motor 1 drives the polishing unit 2 and the fan unit 42 to perform a rotation stroke, and a large amount of dust generated during the polishing operation is concentrated by the dust collecting cover 3 on the dust collecting unit. In the space 33, the fan unit 42 drives the airflow in the dust collecting space 33 to blow the dust generated by the polishing operation upward, and the dust collecting cover 32 concentrates the guiding airflow toward the center, and guides the dust discharging opening through the guiding portion 35. 34 Dust out.

By the flow guiding portion 35 of the dust collecting cover 32, when a high-speed polishing or a large-area polishing operation is performed, a large amount of dust generated by the polishing is concentrated and guided to the dust-discharging opening via the flow guiding portion 35. 34 discharge. Moreover, the design of the dust collecting cover 32 is tapered such that the height of the dust collecting space 33 decreases along the direction from the top portion 321 to the peripheral wall 31, thereby helping the dust to concentrate on the flow guiding portion 35 and The dust discharge opening 34 at the end of the flow guiding portion 35 discharges the dust. Further, the fan portion 42 and the blade portion 41 of the polishing machine tool are designed to be rotated by the driving motor 1 when the polishing machine tool performs the polishing process, and the electric fan generally blows a large amount of dust generated by the grinding. With the design of the above-mentioned flow guiding portion 35 and the dust collecting cover 32, a large amount of dust generated by high-speed grinding or large-area grinding can be easily and smoothly removed from the dust-discharging opening 34, and the conventional grinding machine can be used for high-speed grinding or large Large area when grinding The amount of dust is not immediately and smoothly eliminated.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

3‧‧‧ dust cover

31‧‧‧Week wall

32‧‧‧ dust cover

321‧‧‧ top

322‧‧‧tight fasteners

323‧‧‧Adjustment

34‧‧‧Dust opening

35‧‧‧Drainage Department

5‧‧‧Dust collector

Claims (9)

A grinding machine comprising a driving motor, at least one grinding portion driven by the driving motor for rotating stroke, and a dust collecting cover for accommodating the grinding portion, wherein the dust collecting cover comprises: a wall, surrounding And the dust collecting cover; and a dust collecting cover body connected to the peripheral wall and forming a dust collecting space for receiving the grinding portion with the peripheral wall, the dust collecting cover body comprising a top portion, and a dust collecting body from the peripheral wall toward the top portion a beveling surface, a dust-discharging opening disposed in the inclined surface to communicate with the dust collecting space, and a flow guiding portion formed on the inclined surface and extending from the dust-discharging opening to the peripheral wall, the guiding portion facing away from the dust collecting The direction of the space is recessed to guide the flow of the dust collecting space to the dust exhaust opening. The abrasive machine tool of claim 1, wherein the abrasive machine tool comprises a plurality of abrasive portions having the same horizontal position. The grinding machine tool according to claim 1 or 2, wherein the grinding machine includes a fan portion disposed between the polishing portion and the dust collecting cover and coupled to the driving motor. The grinding machine tool according to claim 2, wherein the grinding machine comprises a plurality of connecting portions connected to the grinding portions, and a plurality of blade portions disposed on the connecting portions. The abrasive machine tool of claim 2, wherein the abrasive portions have the same size. The abrasive machine tool of claim 2, wherein the grinding portions have the same weight. The abrasive machine tool according to claim 1, wherein the flow guiding portion is radially disposed on the dust collecting cover with the top portion as a center. The abrasive machine tool according to claim 1, wherein the flow guiding portion is disposed on the dust collecting cover with a spiral ring centered on the top portion. The abrasive machine tool according to claim 1, wherein the top portion comprises a fastening member connected to the grinding machine tool and an adjusting member pivoting the fastening member and adjusting the fastening degree of the fastening member.