JPS5851813B2 - Rotating wheels in cutting equipment for stone, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutting device using an endless diamond-tipped saw, and in particular, a rotating wheel has an elastic auxiliary belt suspended around a pulley having a large number of depressions formed on the outer periphery. By changing the apparent upper diameter of the rotating wheel, the apparent upper interval of the recess is adjusted, thereby adjusting the positional deviation between the recess and the diamond tip. It is.

Endless diamond tip saws have a number of diamond tips attached at appropriate intervals to the lower edge of an endless band made of steel, and are suitable for cutting hard materials such as metal and stone.

A cutting device using an endless diamond-tipped saw consists of a pair of rotating wheels, and the band of the endless diamond-tipped saw is suspended from the rotating wheels, and the band is tensioned by applying a strong tendency to open the two rotating wheels. This is what rotates it.

This type of cutting device has the advantage of being highly adaptable to hard materials, but on the other hand, conventional ones have a short lifespan because they tend to crack and break at the attachment point of the diamond tip of the band. It had

This drawback is due to the fact that the band of the endless diamond tip saw is a thin steel plate that is weak against repeated bending, and that the band and the diamond tip are completely different from each other, as shown in Figure 1. When this is hung on the rotating ring 13 of the cutting device and tensioned, the band 11 becomes the rotating ring 13 of the cutting device.
The diamond tip 12 is strongly pressed against the rotating wheel, curves to follow the circular shape of the rotating wheel, and comes into close contact with it.However, since the diamond tip 12 is hard and does not deform at all, the attachment part A of the diamond tip 12 is endless. The band is bent and this part breaks.

As a way to solve this problem, the inventor of the present invention took into consideration the fact that the band does not break even if it is repeatedly bent.
On the outer periphery of the rotating ring, a large number of protrusions are placed at the intervals between the diamond tips, so that they hit the middle of the diamond tips on the band, and the diamond tips are kept in a straight line to prevent this part from breaking. He invented a cutting machine that prevented the
No. 3780).

The present invention is an improvement on the above-mentioned invention, in which the rotating wheel is constituted by a pulley with a large number of depressions formed on its outer periphery, and an auxiliary belt suspended from the pulley, and the auxiliary belt is expanded and contracted to make the depressions visible. The hook adjusts the upper interval, thereby correcting any misalignment between the diamond tip and the depression, so that the diamond tip mounting portion of the band is always kept in a straight line.

The present invention will be specifically described below based on illustrated embodiments.

Reference numeral 1 in the figure is an auxiliary belt. This belt 1 is suspended over a main pulley 2, a guide pulley 3, and a tension adjustment pulley 4, and together constitutes a rotating ring, and this belt itself has appropriate elasticity and elasticity. It is formed using a material whose thickness changes as it expands and contracts.

A large number of recesses 5 are formed on the outer circumferential surface of the main pulley 2 at equal intervals with slightly narrower intervals depending on the mounting interval of the diamond tip 7 to the band 6 of the diamond tip saw.

The width and depth of the recess 5 are not particularly limited, but the width should be at least wider than the length of the diamond tip I, and the portion of the depth auxiliary belt 1 that corresponds to the recess 5 may be linear or straight. It is necessary that the depth is such that it can be curved in a close state.

Here, the relationship between the main pulley 2 and the auxiliary belt 1 will be explained. As shown in the figure, the auxiliary belt 1 is in contact with the main pulley 2 over half its circumference, and the portion that contacts the depression 5 is linear.

Therefore, the rotating wheel appears to have a depression formed in the upper auxiliary belt 1.

The interval between these depressions is proportional to the radius of the rotating wheel, and since this radius is the sum of the thickness of the auxiliary belt 1 and the radius of the main pulley 2, changing the thickness of the auxiliary belt 1 will change the rotation. The apparent appearance of the ring is that the upper radius inevitably changes, and thus the spacing between the depressions changes.

Therefore, the auxiliary belt 1 has a thickness such that the interval between the depressions is slightly wider than the attachment interval of the diamond chips 7 to the band 6 when there is no load, and when it is stretched, it is slightly narrower than the attachment interval. It is important to make it thick.

The tension adjustment pulley 4 is used to extend and contract the auxiliary belt 1, and can be freely separated from the main pulley 2.
It is formed so that the distance between the two ends can be varied, and the distance is adjusted by an adjustment mechanism (not shown).

Needless to say, the above-mentioned adjustment mechanism is for automatic ticket counting, and the method is not particularly limited, but as an example, a through hole 8 is drilled at an appropriate position in the main pulley 2, and its rotational trajectory is sandwiched between the holes 8 and 8. Then, a photoelectric detection device 9 is installed, and on the other hand, a transparent hole 10 is drilled in the band 6 of the diamond-tipped saw, and a photoelectric detection device 11 is installed between the rotating orbits of the band 6 and detects the point at which the through holes 8 and 10 pass. Detect.

The mounting positions of the photoelectric detection devices 9 and 11 are, for example, when the diamond chip 7 is located at the center of the recess as shown in the figure and is rotating, that is, when the diamond chip 7 and the recess maintain a normal positional relationship. When rotating, the passing points of the through holes 8 and 10 are set at points that can be detected simultaneously, and the positional relationship between the diamond tip 7 and the recess is determined by detecting the shift in the time of passage of both. The position of the tension adjustment pulley 4 is changed by detecting the deviation of the tension adjustment pulley 4 and feeding it back to the adjustment mechanism through a ticket counting device (not shown).

Next, the operation for correcting the positional deviation between the diamond tip 7 and the depression 5 will be explained.

As an example, FIG. 3 shows a diamond tip 7 for a depression 5.
showed a leading state.

The causes of such misalignment between the diamond tip 7 and the recess 5 are when the interval between the recesses of the rotating ring is wider than the mounting interval of the diamond chip 7, and when there is a gap between the band 6 and the rotating ring. There may be cases where slipping occurs.

In this case, there is a delay in the time when the photoelectric detector 9 detects the transparent hole 8 than the time when the photoelectric detector 11 detects the transparent hole 11, so this is fed back to the adjustment mechanism and the tension adjustment pulley 4 is slightly separated from the main pulley 2.

Then, the auxiliary melt 1 is stretched accordingly, and its thickness is slightly reduced.

And the radius of the rotating wheel is reduced by that amount.

Also, since the interval between the depressions of the rotating wheel is proportional to the radius of the rotating wheel, if the radius of the main pulley 2 is r, the thickness of the auxiliary belt 1 before stretching is T1, and the thickness after stretching is t, then the depressions are The distance d is r+t d=D, where D is the distance before the auxiliary belt is stretched.

r+T Then, if the number of depressions 5 formed in the main pulley 2 is N, and the mounting interval of the diamond tip T with respect to the band 6 is S, then the diamond tip 7 will move (-8 -d) The positional deviation with respect to the N-dare depression is corrected.

As described in detail above, the present invention involves a main pulley having a large number of depressions formed at equal intervals on its outer circumferential surface, and an auxiliary belt having appropriate elasticity and elasticity suspended therefrom to form a rotating ring, and the auxiliary belt is expanded and contracted. The mechanism attempts to adjust the positional deviation between the diamond tip and the depression by changing the thickness of the diamond tip and thereby changing the radius of the rotating ring. This has the advantage of being able to adjust the positional deviation between the rotary wheel and the recess of the rotary wheel.

[Brief explanation of drawings]

FIG. 1 is a front view schematically showing a conventional cutting device, and FIGS. 2 and 3 are front views schematically showing an embodiment of the present invention. 1...Auxiliary belt, 2...Main pulley,
3... Guide pulley, 4... Tension adjustment pulley, 5... Curvature, 6... Band, 7...
...Diamond tip, 8...Through hole, 9.
...Photoelectric detection device, 10...Through hole, 11
...Photoelectric detection device.

Claims (1)

[Claims] 1 In a rotating wheel in a cutting device using an endless diamond tip saw, the rotating wheel consists of a main pulley, an auxiliary bell dowel suspended from the main pulley, a tension adjusting gouge, etc., and the main pulley has a diamond tip attached to the band of the diamond tip saw on its outer periphery. A large number of depressions are formed at intervals slightly narrower than the spacing, the auxiliary belt is made of a material with appropriate elasticity and elasticity, and the tension adjustment pulley stretches and contracts the auxiliary belt. A rotating wheel for adjusting the thickness of an auxiliary belt.