JPH0432214Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Industrial application field" This invention is useful for removing coatings during painting work, etc.
Concerning polishing tools used for rust removal.

``Prior Art'' Conventionally, in this type of work, paper was replaced frequently, so adhesives or hook-and-loop fasteners that were easy to attach and remove were used to bond the disk paper and pad.

However, if paper that has been glued is left in place for a long time, it will be difficult to peel off unless heat is applied, and if you force it, the paper base will be damaged.

On the other hand, magic-type hook-and-loop fasteners that can be attached and detached with one touch are more convenient and are often used, but these are more expensive than glue-on ones, and are naturally more expensive.

In addition, when the periphery of rotating disk paper wears down or the coating film melted by the polishing heat becomes clogged, reducing the grinding power, there is still enough usable whetstone left in the center. They end up throwing it away.

``Problems that the invention attempts to solve'' The present invention is designed to restore the grinding power of disk paper, which has lost its edge, and to increase its frequency of use.

``Means for solving the problem'' The present invention is to attach one or more perforations with different diameters from the center to the disc paper that is attached to the pad of a rotating sander, in order to separate the worn out circumference. This polishing tool is characterized by being provided with two or more auxiliary pads that are engraved and can be adapted to the diameter of the disk paper.

"Example" Next, an example of the present invention will be described based on the drawings.

FIG. 1 shows a pad 1 attached to a sander main body, and a magic hook-and-loop fastener 2 is formed on the surface of the pad 1.

Figures 2 to 3 show perspective views of pads 3 and 4, which have different diameters. be.

A surface fastener 5 is formed on the front surface of the pad 3, and a surface fastener 6 is formed on the back surface, and a surface fastener 7 is formed on the surface of the pad 4, and a surface fastener 8 is formed on the back surface thereof.

Pads 3 and 4 are made of rubber or resin,
It has appropriate elasticity, and pad 1, pad 3, and pad 4 have different diameters.

FIG. 4 shows a partial cross section of the pad 3. Note that the pad 4 is substantially the same as the pad 3, so its description will be omitted.

FIG. 5 shows a perspective view of the disk paper 9. The disk paper 9 is formed to have the same diameter as the pad 3, and the base material 10 is coated with abrasive grains 11.
is applied with an adhesive (not shown). Also, on the back side there is a hook-and-loop fastener 12 for attaching to the pad.
perforations 13, 1 with different diameters from the center.
4 is engraved through both sides.

Incidentally, each of the surface fasteners described above may be provided on the entire surface or only on a necessary part.

``Function'' Therefore, when the present invention having the above-mentioned configuration is used, the large diameter pad 3 is attached to the hook-and-loop fastener 6 on the back side.
Attach it to the surface of the pad 1, that is, the hook-and-loop fastener 2. Next, the surface fastener 12 of the disk paper 9 is pasted onto the surface fastener 5 of the pad 3. As mentioned above, disk paper 9 and pad 3
are molded to have the same diameter, and a sub pad 3 is required as a means for pasting the large diameter disk paper 9 to the small diameter pad 1.

When polishing work is carried out in such a state, the periphery of the disk paper 9 is worn, the coating film melts, clogging occurs, and the polishing power decreases. Conventionally, the paper is replaced with a new one at this stage, but in the present invention, the disc paper 9 is replaced with a new one at this stage.
Then, the circumferential portion, that is, the first circumferential portion 15 is cut off from the perforation 13. Then, the second circumferential portion 16 is exposed, and then the pad 3 is replaced with a pad 4 having the same size as the second circumferential portion 16, and the disc paper 9 with the reduced diameter is attached to the hook-and-loop fastener of the pad 4. Paste it to 7 and continue the polishing work again.

In short, the present invention gradually cuts out the circumferential part of the disk paper whose polishing ability has decreased, and by using a secondary pad that adapts to the reduced diameter, the diameter of pad 1 is finally reached. This allows one piece to be used several times.

In addition, the pads and disc paper of this example are not limited to circular shapes, but can be modified into petal shapes, polygons, and other shapes.Also, the pads and disc paper can be bonded together using hook-and-loop fasteners or glue. All are included in this invention. Furthermore, it goes without saying that the present invention can be similarly applied to a known dust-collecting sander in which holes are made in the pad and disk paper.

``Effect of the invention'' This invention, which has the above structure and function, can be easily attached to the pad of a conventional sander with a single touch, and the disk paper, which until now was used once and then thrown away, can be used many times again by restoring its grinding power. It can be very economical.

[Brief explanation of drawings]

The drawings show an embodiment of the invention,
Fig. 1 is an explanatory view of the operation, Figs. 2 and 3 are perspective views of the sub pad, Fig. 4 is a sectional view showing a part of the sub pad, Fig. 5 is a perspective view of the disk paper,
FIG. 6 is a sectional view showing a portion of the disk paper. 1... Padded, 2... Surface fastener, 9... Disc paper, 13... Perforation, 15... First circumferential part, 16... Second circumferential part.

Claims (1)

[Scope of utility model registration request] One or more perforations with different diameters from the center are carved into the disc paper to be pasted onto the pad of the rotating sander, in order to cut off the worn circumference. A polishing tool characterized by having an adaptable secondary pad.