JPS582795B2 - Belt backlash plastron - Google Patents

Description

[Detailed Description of the Invention] This invention moves the abrasive material supplied within the contact section between the endless belt rotating at high speed and the contact pulley while extremely compressing it in the rotation direction, and explosively at the projecting point. The compression is released,
A belt-type blasting mechanism that applies rotational speed energy directly to the abrasive material to polish the object is used to blast round materials,
The present invention is capable of efficiently cleaning objects to be polished such as square materials or shapes, and further relates to a cleaning method that is preferably applied when a large number of objects are to be cleaned at once.

Regarding the belt type blast mechanism, Japanese Patent Application Laid-Open No. 50-3819
This is disclosed in Publication No. 4.

Figure 1 shows an overview of the cleaning mechanism.

In the figure, 1 is a drive pulley, 2 is a tension pulley, an endless projection belt 3 is wound between these pulleys, and a contact pulley 4 is provided in contact with or near this belt. Abrasive material is introduced between the pulleys via the distributor 5, and the velocity energy of the belt and the contact pulley forms an abrasive material flow 7, which causes the abrasive material to be vigorously projected onto the surface of the object to be polished 6. Sharpen.

The cleaning method in this case is appropriately selected depending on the form of the object to be polished, the required surface to be polished, and the finishing accuracy.

For example, in the case of single-sided polishing of a plate surface, the polishing is performed by projecting the abrasive material onto the single side at an appropriate projection angle.

A method is also adopted in which both sides are polished at the same time.

Furthermore, in single-sided and double-sided polishing systems, a type in which two or more belt-type blasting mechanisms are installed in parallel to sequentially polish the same surface is also adopted.

In the case of such plate grinding, it can be easily polished, but there is a blind spot in the projection of the abrasive material on round materials (e.g., round bars, pipes), square materials, and shaped materials (e.g., angles, channels, H shapes, etc.). Therefore, a method is adopted in which the abrasive material is projected from two to four directions to prevent the formation of a projection blind spot.

In this case, in order to reduce the projection blind spot, the projection height and projection angle of the abrasive material are appropriately selected depending on the shape and dimensions of the object to be polished.

Such a cleaning method makes it possible to efficiently polish a single object to be polished to a desired finished surface.

However, in order to further improve the cleaning efficiency, there is a strong demand for simultaneously cleaning several or many pieces.

This invention is a cleaning method devised to meet the above-mentioned circumstances.

Embodiments of the present invention will be described below with reference to the drawings.

Descriptions of the numbers in the drawings shown below that correspond to the numbers shown in FIG. 1 will be omitted.

In FIG. 2, several round rods 6 as objects to be polished are arranged horizontally at equal intervals and are moving at a predetermined speed in the direction of the arrow.

Two belt-type blast mechanisms/16.1 and 2 are provided at a predetermined interval on the upper surface of the objects to be polished, which are moved in parallel.

The abrasive material flow 7 projected from each belt-type blasting mechanism is directed at a predetermined projection angle θ with respect to the surface of the object to be polished and at a predetermined oblique angle θ1 with respect to the axial direction of the object to be polished. It is formed in the direction of movement of the object to be polished.

When the directions of the oblique angles θ of the blast mechanism debris 1 and debris 2 are opposite to each other, substantially no projection blind spot is formed in the circumferential surface portion.

Therefore, the projection angle .theta. and the oblique angle .theta.1 are determined in consideration of the dimensions of the object to be polished and the arrangement interval.

Further, a No. 3 belt-type blasting mechanism is provided so as to be seen from the bottom surface of the object to be polished, and the blasting material flow 7 is projected at a predetermined projection angle θ onto the surface of the moving object to be polished. Ru.

FIG. 3 is an explanatory diagram showing, by arrows, the direction in which the abrasive material is projected in the above-mentioned cleaning method.

As the projection angle θ of the abrasive material flow 7 projected from each belt-type blasting mechanism is made smaller, the projection area on the surface of the object to be polished increases, but the projection force becomes weaker.
It is set in relation to the cleaning conditions, taking into account the material of the object to be polished, the degree of cleaning, etc.

4 and 5 show an example in which the aspect of the cleaning method shown in FIG. 2 is reversed.

Figures 6 and 7 show two belt-type blasting mechanisms (No. 1, No. 2), (No. 3, No. 3, No.4
) is used to polish the same surface. They appear correspondingly as explained in FIG.

According to this cleaning method, the projected figure range of the abrasive material intermingles with each other as shown in Figure 7, so more uniform cleaning is achieved, and it is also effective when applied to cleaning square materials, shaped materials, etc. can demonstrate.

In the above example, two belt-type blasting mechanisms are installed at a predetermined interval on the same surface of the object to be polished, and the abrasive material is projected. Needless to say, there may be two or more depending on the cleaning conditions.

According to the cleaning method of the present invention, it is possible to simultaneously polish a large number of objects to be polished, such as round materials, rectangular materials, or shaped materials, and the cleaning method has the advantage of increasing efficiency and simplifying the cleaning process.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a belt-type blasting mechanism, Fig. 2 is an explanatory diagram showing an embodiment of the present invention, Fig. 3 is an explanatory diagram showing the projection direction of the abrasive material, and Figs. 4 to 7. is an explanatory diagram showing another embodiment. The symbols in the figure represent the following. 1... Drive pulley, 2... Tension pulley, 3...
...Projection belt, 4...Contact pulley, 5...Distributor, 6...Object to be ground (round bar), 7...Projection abrasive material flow, θ...Projection angle, θ,...Bevel angle.

Claims (1)

[Claims] 1. A belt-type blasting mechanism consisting of an endless belt rotating at high speed and a removal pulley is placed in front of both the front and back sides of one or several parallel objects to be polished, which move at a predetermined direction and speed. One or more belt-type blast mechanisms are provided on one side and two or more on the other side, and the flow of abrasive material projected by velocity energy from the two or more belt-type blast mechanisms arranged on the same surface of the object to be polished is The object to be polished is projected by projecting the abrasive material at a projection angle θ with respect to the object surface and at an appropriate oblique angle θ1 with respect to the axial direction of the object to be polished, with the directions of inclination being different from each other. A cleaning method using belt-type blasting.