JPH07237131A - Pad for grinding material furnishing - Google Patents

Abstract

PURPOSE:To effectively restrain grinding heat by forming air intake openings that are opened in a rotary direction, at the peripheral edge portion of the disklike base material of a pad for grinding material furnishing at whose center portion exhaust openings are provided, conducting connection through the exhaust openings and passages. CONSTITUTION:A screw 2 is provided at the back surface center portion of a disklike base material 1, and connectability to the drive spindle of a grinder is realized. Exhaust openings 3 are penetratingly provided around the screw 2 of the base material 1, and a leather or surface fastener 7 is made to adhere to the base material 1 through an elastic material 4 having adequate cushion and thickness, and at the peripheral edge portion of the elastic material 4, plural air intake openings 5 to take in air are formed at proper intervals, and plural passages 6 whose each one end starts from each exhaust opening 3 and whose each other end is inclined toward a rotary direction R, are formed radially, and the air intake openings 5 are connected to the exhaust openings 3 through these passages 6. As a result, when a pad is rotated, the radiation of the pad is conducted by discharging air A that has flowed in from the air intake openings 5, from the center exhaust openings 3 through the passages 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an abrasive material mounting pad for a polishing machine used for polishing a coated surface or the like.

[0002]

2. Description of the Related Art Up to now, a pad to which leather or a hook-and-loop fastener is attached and which has an abrasive attached thereto has been widely used. However, the so-called abrasive heat generated during polishing is applied to the abrasive and its mounting portion. It causes various problems such as heating to the surface, entanglement of the coating film, and distortion of the surface to be polished.

[0003]

In the case of a pad provided with a leather, the abrasive was attached by using an adhesive. However, the adhesive type adhesive has a direct attachment of the abrasive to the leather. The heat to the pad is remarkable. This heat of polishing softens the adhesive, and the abrasive may peel off during use and fall off. Therefore, if an adhesive having a strong adhesive force is used, the base material is damaged when replacing the worn-up abrasive material, and it is difficult to remove the base material.

Even in the case of a pad provided with a hook-and-loop fastener, there is a danger that the abrasives combined during the work may fall off and scatter. Therefore, by repeating experiments, when the rotating abrasive is strongly pressed against the surface to be polished for a long time, the hook portion of the resin fastener tip softened by the polishing heat is pulled and extended. At this time, it was found that the binding force between the fasteners was weakened and the fasteners fell off and scattered. However, it was also found that the degree of bending of this hook returned to its original value when the temperature dropped.

Further, the dust suction type polishing machine uses a suction hole provided in the pad and the polishing material to remove dust generated by polishing from the suction hole.
The structure was such that the negative pressure generated on the back side of the pad sucked into the body and discharged. That is, the conventional suction method only sucks dust by relying only on the suction force by the negative pressure of the motor. For this reason, there is a limit to the suction ability that the suction surface is sucked at the contact surface of the pad, but no suction effect is obtained for fine dust rising from the periphery. The problem to be solved by the present invention is to prevent heat generated during polishing from being applied to the abrasive material mounting portion. Moreover, it is to provide an abrasive material mounting pad that can be used for dust absorption, with an increase in suction force.

[0006]

The technical means taken by the present invention to solve the problems are as follows. An exhaust port 3 is provided in the central portion, and a mounting surface 8 to which an abrasive is attached
At least one intake port 5 which is opened in the rotational direction for taking in air is provided on the disk-shaped peripheral part provided with, and one end is emitted to the exhaust port 3 and the other end is directed outward to the intake port 5. A passage 6 communicating with the pad is formed, and the air flowing in from the intake port 5 when the pad is rotated cools the mounting surface 8 or the abrasive attached to the mounting surface 8 through the passage 6, and then the air is exhausted from the exhaust port 3 It is designed to be discharged from.

[0007]

When the pad according to the present invention is used, a plurality of pads are provided on the peripheral portion and the air A flows as wind into the passage 6 from the intake port 5 opened in the rotational direction. The wind is a so-called air-cooling type pad that functions to cool the frictional heat generated by polishing from the inside of the pad by flowing inwardly in each passage 6. The higher the rotation, the higher the cooling power. That is, the passage 6 is arranged on the back surface of the mounting surface 8 or on the mounting surface, and even if frictional heat is generated in the polishing material, if the pad rotates, it is self-generated.
Air naturally flows into the passage 6 from the intake port 5 arranged in the direction of rotation to cool the mounting surface 8 and the abrasive. Further, in the third embodiment, the passage 6 is provided as a concave groove on the surface of the mounting surface 8, and the abrasive material attached here is directly exposed to the wind from the back side. The agent does not melt due to heat. Further, in the case of a hook-and-loop fastener, the wind uniformly enters between the fluffs, so that the entire back surface of the abrasive is cooled. The dust generated by the polishing is forcibly sucked through the central hole 9 and the suction hole 10 by the suction force of the motor being assisted by the flow of air that has entered from the vent hole 5. Similarly, fine dust that rises around the pad is also sucked from the intake port 5.

[0008]

【Example】

Example 1 Example 1 of the present invention will be described with reference to FIGS. 1 to 4. 1 is a perspective view showing a first embodiment, FIG. 2 is a bottom perspective view thereof, FIG. 3 is a sectional view taken along the line AA, and FIG. 4 is a schematic explanatory view of the operation of the present embodiment. In Example 1, a pad not used for dust collection is shown. A screw 2 is provided in the center of the back surface of the disk-shaped substrate 1,
Although not shown, the pad is rotated by being connected to the drive shaft of the polishing machine. Further, an exhaust port 3 is provided around the screw 2. An elastic material 4 having an appropriate cushion and a wall thickness is adhered to the base material 1, and a plurality of intake ports 5 are provided at appropriate intervals at the peripheral edge of the elastic material 4 in order to take in wind. ing. The elastic member 4 is provided with a number of radial passages 6 each having one end that is emitted from the exhaust port 3 and the other end that is inclined toward the rotational direction (arrow R), through which the intake port 5 and the exhaust port 3 are connected. Each is in communication. That is, when the pads are rotated, the intake ports 5 are provided so as to open in the rotational direction so that the air A can easily flow from the respective intake ports 5. Air A is passage 6
Through the central exhaust port 3 to the back side of the pad. Reference numeral 7 denotes a leather or a surface fastener for attaching an abrasive material, which is adhered to the elastic material 4 to form a flat mounting surface 8.

Second Embodiment A second embodiment will be described with reference to FIGS. 5 is a perspective view showing a second embodiment, FIG. 6 is a bottom perspective view thereof, FIG. 7 is a sectional view taken along the line BB, and FIG. 8 is a schematic explanatory view of the operation of the present embodiment. In the second embodiment, a pad for absorbing dust is shown. A central hole 9 reaching the base material 1 is formed on the flat abrasive mounting surface 8 so as to communicate with the exhaust port 3. A plurality of passages 6 having one end in the central hole 9 are connected to the intake port 5 at the peripheral edge with the other end inclined toward the rotation direction (arrow R). Furthermore, the mounting surface 8
There are several suction holes 10 penetrating the back surface of the polishing pad, which are provided corresponding to the suction holes of the polishing material (not shown). The suction hole 10, the central hole 9 and the exhaust port 3 are communicated with each other via a passage 6. When the pad is rotated, the air A flows from the intake port 5 into the passage 6. The air flow at this time gives a strong suction force in addition to the suction force of the motor, and the dust D around the pad is sucked together with the air A from the intake port 5, and the polishing surface has a central hole 9 and a suction hole. Sucked from 10. Then, the dust D and the air A vigorously pass through the passage 6 and exit from the exhaust port 3. It also goes out from the suction hole 10 'on the back side. At the same time, this air flow cools the mounting surface 8 from the back side.

Third Embodiment A third embodiment will be described with reference to FIG. FIG. 9 is a perspective view showing the third embodiment. In Example 3, a pad that can be used for both dust collection and non-dust collection is shown. Leather or surface fastener on the surface 7
A central hole 9 is shallowly formed in the central portion of the mounting surface 8 on which the exhaust hole 3 is provided, and an exhaust port 3 penetrating to the rear surface side is provided inside the mounting surface 8. A concave groove 11 that reaches the portion is radially formed to form a passage 6, and an intake port 5 is formed on the peripheral wall. In addition, this groove 1
1 may be provided by removing only the leather or surface fastener 7 on the surface, but the elastic material 4 may be deeply drilled together therewith. This pad is configured such that an abrasive is attached to the mounting surface 8 to cover the surface of the passage 6, and when rotated, the wind passing through the inside of the passage 6 directly hits the back surface of the abrasive to cool the abrasive itself. Further, when this is used for dust collection, the mounting surface 8 does not need to be provided with a special suction hole. For example, make the polishing paper a donut shape and each intake port 5
If the part is cut out in a substantially semicircular shape, dust can be sucked from the central hole 9 and the intake port 5 part. Further, when the suction holes are provided in the polishing paper, it is preferable that the suction holes have an elongated shape.
Since the long hole has a function of scraping dust inward during polishing, dust can be collected and sucked in the central hole 9 without being scattered around.

The pad of the present invention is made of rubber or polyurethane having flexibility and elasticity, or resin, or metal such as aluminum material, which may be used alone or formed by stacking elastic materials. But it's okay. As the elastic material 4, a sponge such as rubber or resin is usually used, but it is preferable to provide it as occasion demands. Further, other than this, for example, a screw may be used as the means for connecting the pad and the abrasive without using the adhesive and the surface fastener. Of course, other coupling methods may be used. Further, various deformations of the pad, abrasives other than abrasive paper, deformations of the arrangement of the passages 6, and the like are conceivable, but these are all included in the present invention.

[0012]

Since the present invention has the above-mentioned configuration,
The heat of polishing can be suppressed extremely efficiently by the spontaneous action of rotation. Therefore, since the adhesive is prevented from melting and the surface fastener is not softened, the abrasive is prevented from falling off and is safe. Further, in the polishing work of the coated surface, the entanglement of the coating film is eliminated, and stable polishing power can be maintained. In addition, distortion due to polishing heat is eliminated, and deterioration of the material is prevented. Further, when used in a dust suction type polishing machine, the suction force is doubled by the flow of air generated by the rotation, and various fine effects can be obtained such that not only the abutting surface of the pad but also the fine dust rising to the peripheral portion can be sucked. It is a meaningful invention.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment.

FIG. 2 is a bottom perspective view of FIG. 1 showing the first embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 1 showing the first embodiment.

FIG. 4 is a partially omitted sectional view showing the operation of the first embodiment.

FIG. 5 is a perspective view showing a second embodiment.

FIG. 6 is a bottom perspective view of FIG. 5 showing a second embodiment.

FIG. 7 is a cross-sectional view taken along line BB in FIG. 5 showing the second embodiment.

FIG. 8 is a partially omitted sectional view showing the operation of the second embodiment.

FIG. 9 is a perspective view showing a third embodiment.

[Explanation of symbols]

 1 Base Material 3 Exhaust Port 5 Inlet Port 6 Passage 7 Leather or Surface Fastener 8 Abrasive Mounting Surface A Air D Dust R Rotation Direction

Claims (1)

[Claims] 1. An intake port (5) opened in a rotational direction for taking in air to a disk-shaped peripheral part provided with an exhaust port (3) in a central part and having a mounting surface (8) for attaching an abrasive. At least one of which is provided, and a passage (6) is formed so as to emit one end to the exhaust port (3) and communicate the other end to the intake port (5).