JPH1148144A - Covering device for belt grinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform grinding work easily and safely, by covering the upper part of a flat plane of an endlessly running sand belt with a cover plate having a holding hole for a ground work. SOLUTION: A belt grinder 1 is entirely covered with a body cover 7 except an upper surface, and a rectangular aperture 8 is provided in the cover at the opposite part to a flat plane 5a of an endlessly running sand belt 5. The aperture 8 holds a work W, and is detachably mounted with a cover plate 11 provided with a work holding hole 10 which opens only in width needed for the grinding, by hinges 12. The work W is inserted into the work holding hole 10 and ground. The work W is stably held by the work holding hole 10 even if it is pulled by the sand belt 5, therefore it can be evenly ground only by being put down. Further, it does not occur that hands may be scraped and injured by the sand belt 5, because the aperture 8 is covered with the cover plate 11 except only the part to be needed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt type grinder cover device for polishing a work by pressing a work against a flat surface of a sand belt running endlessly.

[0002]

2. Description of the Related Art A belt type grinder is designed to grind a work pressed by a worker's hand on a flat surface of a sand belt running endlessly.

[0003]

The belt type grinder has the following problems because the sand belt pulls the workpiece being polished in the rotating direction. Since the operator must press the work against the sand belt and hold the work so as not to move in the rotation direction, it is difficult to perform the polishing work, and it is difficult to uniformly polish the work. When the force for holding the work is weakened, there is a risk that the work may be blown off by the sand belt and a hand may touch the sand belt.

[0004] In view of the above problems, the present invention holds a work so as not to be pulled by a sand belt, and covers the upper surface of the sand belt by leaving only a portion necessary for polishing, thereby performing a polishing operation. An object of the present invention is to provide a belt-type grinder cover device that can be easily and safely performed.

[0005]

According to the present invention, an object of the present invention is to form a flat surface and hold a work for polishing above the flat surface of a sand belt running endlessly while polishing the work. The problem is solved by covering with a cover plate having a holding hole opening to a size required for the above.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the present invention,
The left side in FIG. 1 is called the front. Belt type grinder
(1) a wide driving pulley (3) rotated by a motor (2) and a driven pulley (4) provided opposite thereto;
And a sand belt (5) which runs between the pulleys (3) and (4) and runs endlessly. The work (W) pressed against the flat surface (5a) of the upper surface of the sand belt (5). ) Is to be polished.

The sand belt (5) is a known polishing member in which abrasive grains are fixed to the surface of a cloth or paper belt. Immediately below the flat surface (5a) of the sand belt (5), a support plate (6) is arranged to prevent the work (W) from being bent downward when the work (W) is pressed against the sand belt (5). Has been established.

The entire surface of the belt type grinder (1) except for the upper surface is covered by a main body cover (7), and a rectangular opening is formed in a portion facing the flat surface (5a) of the sand belt (5). (8) is formed. On the back of the body cover (7),
When the work (W) is accidentally pulled into the sand belt (5), a stopper plate (9) is provided to receive the work (W) and prevent the work (W) from being blown backward. . Further, a hose connected to a dust collector (not shown) is attached to a rear portion of the main body cover (7).

The work (8) is provided in the opening (8) of the main body cover (7).
(W), and a cover plate (11) having a work holding hole (10) formed in a size necessary for polishing the work (W) is formed with a pair of hinges (12) (12). ) So that the opening (8) can be opened and closed. A horizontal receiving surface (8a) for receiving the work holding plate (11) is formed in the opening (8).

In the belt grinder (1) of the above embodiment, when the work (W) is inserted into the work holding hole (10) and polished, the work (W) is pulled even by the sand belt (5). Because it is stably held by the holding hole (10),
By simply pressing the work (W), uniform polishing can be performed. Further, since the opening (8) is covered with the cover plate (11) except for a portion necessary for polishing the work (W), the sand belt (5) may be injured by hand. There is nothing.

A belt grinder (13) according to another embodiment shown in FIG. 3 has a cover plate (15) having a work holding hole (14) conforming to the shape of a work (W) to be polished, and an opening ( 8) so that it can be detachably fitted. In this manner, works of various shapes can be polished simply by replacing the cover plate (15).

[0012]

According to the present invention, the work is stably held by the work holding holes, so that the work can be uniformly polished simply by pressing down. Further, since the flat surface of the sand belt is closed except for a portion necessary for polishing the work, the sand belt is not touched by hands and safety is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a belt grinder according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the belt-type grinder with a cover plate opened.

FIG. 3 is a perspective view around an opening of a belt type grinder of another embodiment.

[Explanation of symbols]

 (W) Work (1) (13) Belt grinder (2) Motor (3) Drive pulley (4) Driven pulley (5) Sand belt (5a) Flat surface (6) Support plate (7) Body cover (8) Opening (8a) Horizontal receiving surface (9) Stopper plate (10) (14) Work holding hole (11) (15) Cover plate (12) Hinge

Claims (1)

[Claims] 1. A cover having a holding surface for holding a work for polishing and opening to a size necessary for polishing the work, above the flat surface of a sand belt which forms a flat surface and runs endlessly. A belt-type grinder cover device characterized by being covered by a plate.