JPH053969B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stone cutting device that uses a diamond band saw as a cutting blade, and particularly to a stone cutting device that can attach a plurality of diamond band saws and perform multi-stage cutting. It is related to.

[Prior Art] In general, as a technology for cutting hard and brittle materials such as stone, a cutting device uses a diamond band saw that reciprocates to which multiple thick hardened steel strips are attached, and a single diamond band saw is used as the cutting blade. There are stone cutting devices etc. that are installed and configured.

[Problems to be solved by the invention] Since the diamond gearing saw to which multiple thick hardened steel strips are attached has a reciprocating motion, the running speed is slow and vibrations are large. The problem is that it is difficult to do so. Further, since the blade portion is thick, there is a problem that the cutting margin is large and the yield of material is poor.

Further, in a cutting device using a diamond band saw, as shown in FIG. 7A, tension is applied to the diamond band saw 60 between a drive pulley 51 and a tension pulley 52 by a tension hydraulic cylinder 54, and a tension is applied from a drive motor 53. A band saw 60 is rotated at high speed by power to efficiently cut a stone material 62 which is a workpiece. In addition,
A pulley case consisting of a drive pulley, tension pulley, band saw, drive motor, etc. is moved up and down by hydraulic pressure, and cutting is performed through a cycle of cutting from top to bottom and returning from bottom to top. Stones are placed on a table 63, and by moving the table back and forth, they can be cut to size and fed in pitches. And the diamond band saw 60 is the seventh
As shown in Figures B and 7C, the width is relatively wide (usually 50-250 mm) and the thickness is thin (usually
A hardened steel strip (0.3 to 1.6 mm) is endlessly welded, and a large number of diamond chips 61 are attached to one end face of the hardened steel strip. In this way, the blade thickness of the diamond band saw is thin, and the diamond tip
It is approximately 0.6 to 5 mm and has smooth continuous rotation in one direction, so there is little cutting allowance and vibration.
It is also possible to slice a 2m square piece of granite into pieces about 5mm thick.

In this way, a stone cutting device that uses a diamond band saw has a small cutting allowance and can cut very thinly.
Since only books are used, there is a problem in that it is not possible to cut several pieces of stone to the required thickness at once.

An object of the present invention is to provide a stone cutting device that can cut several pieces of stone to a predetermined thickness at once using a plurality of diamond band saws, and can improve work efficiency by several times.

Another object of the present invention is to provide a stone cutting device that can cut stone to a desired thickness.

Still another object of the present invention is to provide a stone cutting device that can prevent stone from being damaged during and after cutting.

[Means for Solving the Problems] The present invention has been made to solve the above problems, and a stone cutting device using a diamond band saw of the present invention is a stone cutting device using a plurality of diamond band saws. , two opposing pulleys, a group of rollers arranged in multiples at intervals on the outside of each of the pulleys, an adjustment device for adjusting the spacing between the plurality of diamond band saws, and the diamond band saw. It consists of a drive device for rotation, and an endless diamond band saw is stretched around the outer periphery of two pulleys and each roller group of roller groups arranged in multiple layers.

Further, a guide roller for guiding the linear portion of each diamond band saw is disposed between the pulleys, and the adjustment device is disposed between the pulleys,
One of the pulleys is brought into pressure contact with a multiple roller group arranged outside the pulley, and at least one of the multiple roller groups is connected to a driving device.

Further, it is preferable that a vibration prevention device for preventing vibration of the diamond band saw is disposed between the pulleys.

Further, a patch plate is suspended above each of the diamond band saws.

Then, the material to be cut is placed on the mounting table, and the base is configured to be able to be moved up and down.

[Function] When stone is cut using the stone cutting device configured as described above, a plurality of diamond band saws are rotated at high speed, and the spacing between the diamond band saws can be adjusted by an adjustment device. Therefore, multiple stone plates can be sliced into desired thicknesses in one cutting operation. Furthermore, by inserting the backing plate into the cutting groove, it is possible to prevent the thin stone plate from being damaged during and after cutting.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. Note that the members, arrangement, etc. described below do not limit the present invention, and can be variously modified within the scope of the spirit of the present invention.

FIG. 1 shows an embodiment of the present invention; FIG. 2 is a plan view of a stone cutting device using a plurality of diamond band saws; FIG. 2 is a partially cutaway front view of FIG. 1; FIG. 3 is a drive mechanism; FIG. 4A is a front view showing the state of the diamond band saw and the caul plate during cutting, and FIG. 4B is a side view of FIG. 4A.

The stone cutting device S in the present invention includes a base B, a drive pulley 1, a tension pulley 2, drive roller groups 3a, 3b, 3c, 3d, 3e, tension roller groups 4a, 4b, 4c, 4d, 4e, adjustment devices 5, 6, guide rollers 7a, 7b, 7c, 7d,
7e, 8a, 8b, 8c, 8d, 8e, a drive motor 9 as a drive device, diamond band saws 20a, 20b, 20c, 20d, 20e, etc.

In FIGS. 1 and 2, reference numeral 1 indicates a drive pulley, and reference numeral 2 indicates a tension pulley. The drive pulley 1 and tension pulley 2 in this example are mounted on a base B disposed with a wide distance left and right. On the outside of the drive pulley 1, a group of drive rollers 3a,
3b, 3c, 3d, and 3e are arranged.

The seven drive roller groups 3a of this example are arranged so as to surround the drive pulley 1 in the outer direction of the drive pulley 1 facing the tension pulley.
A drive roller group 3b is arranged outside the drive roller group 3a, and the drive roller groups 3c, 3d, and 3e are thus sequentially arranged in multiples on the outside. A clamping device (not shown) is attached to the lower part of these drive roller groups 3a to 3e to press each drive roller group 3a to 3e toward the drive pulley 1 and clamp the diamond band saw 20. There is. As this clamping pressure device, a well-known device using hydraulic pressure, pneumatic pressure, etc. can be used.

Further, on the outside of the tension pulley 2, tension roller groups 4a, 4b, 4c, 4d, and 4e are arranged in multiple layers, similar to the drive roller groups 3a to 3e described above. And tension pulley 2 is well known.
A known tension device (not shown) is attached, and this tension device includes a drive pulley 1 and drive roller groups 3a to 3e, and a tension pulley 1.
The tension pulley 2 is moved in order to tension the diamond band saw installed on the tension roller groups 4a to 4e.

and the outer peripheries of the drive pulley 1 and tension pulley 2, the drive roller group 3a and the tension roller group 4a.
One diamond band saw 20a to 20e is installed on the outer periphery of the drive roller group 3b and tension roller group 4b, the outer periphery of the drive roller 3c and tension roller group 4c, and the outer periphery of the drive roller group 3d and tension roller group 4d. A total of five lines will be installed.

Each of these diamond band saws 20a-2
As shown in FIG. 2, a large number of diamond chips 21 are attached to the lower end of Oe at appropriate intervals. Each diamond band saw 20a to 20e is held between a drive pulley 1 and a group of drive rollers 3a to 3e, and is stretched between the drive side and a tension pulley 2 and a group of tension rollers 4a to 4e. ing.

Further, a pair of adjustment devices 5 and 6 are arranged at the front of the opposing inner surfaces of the driving pulley 1 and the tension pulley 2 (lower side in FIG. 1). The pair of adjustment devices 5 and 6 adjust the distance between each diamond band saw 20 when cutting stone material 22. Since the adjusting devices 5 and 6 are similar devices, the following description will focus on the adjusting device 5 on the drive roller group side. As shown in FIG. 1, the diamond band saw 20c in the middle is arranged so that the distance between the diamond band saws 20a to 20e regulated by the driving roller groups 3a to 3e can be adjusted.
There are four rollers 5a, 5b, 5c, and 5d that are movable in the width direction (vertical direction in FIG. rollers 5e and 5f, and two outer diamond band saws (i.e., a diamond band saw 20a in contact with the drive pulley 1, and a drive roller 3).
It consists of two rollers 5g and 5h that adjust the distance between the diamond band saw 20e) and the diamond band saws 20b and 20d that are in contact with the diamond band saw 20e.

On the other hand, in this example, the rear inner surface where the drive pulley 1 and the tension pulley 2 face each other (upper part in FIG. 1)
Guide rollers 7a to 7e and 8a to 8e are arranged to guide the straight portions of the diamond band saws 20a to 20e. Guide roller 7a
~7e and 8a~8e each hold and guide each diamond band saw by two rollers.

Furthermore, at a predetermined position of the diamond band saw 20 located between the adjustment device 5 and the adjustment device 6,
A table 23 is arranged, and the table 23
As shown in FIG. 2, the same number of caul plates 24 made of plastic or hard rubber are suspended above the diamond band saws. This backing plate 24 is made of plastic, hard rubber, etc., has a thickness slightly thinner than the width of the cut groove, and has a tapered lower end 24a. The caul plate 24 descends at the same speed as the descending speed of the diamond band saw, and enters into the groove of the stone 22 cut by the diamond band saw. As a suspension means for the backing plate 24, a well-known general support device (not shown) is used, and is configured to move up and down in synchronization with the diamond band saw 20. and table 2
3, a stone 22 to be cut is placed.

In this example, a drive motor 9 is used as a drive device for driving the drive pulley 1. This drive motor 9 is installed below the drive pulley 1, as shown in FIG. The belt 12 is suspended between the belt pulley 10 and the belt pulley 11 installed below the drive pulley 1,
The drive motor 9 is driven to drive the drive pulley 1 via the belt 12.

Therefore, by the clamping device, between the drive pulley 1 and the drive roller group 3a, the drive roller group 3a
and 3b, between drive roller groups 3b and 3c,
Between drive roller groups 3c and 3d, drive roller group 3
A diamond band saw 20 is held between d and 3e, and the diamond band saw 2
0a to 20e run in opposite directions.

In the example shown in FIG. 3, the drive motor 9 is
Although an example is shown in which a drive motor is used, two or more drive motors may be used to drive the drive pulley and the drive roller group separately. In this way, by providing separate drive systems for the drive pulley and the drive roller group, the clamping device can be omitted and the degree of freedom in the spacing between the diamond saws can be increased.

Next, a method of attaching a plurality of diamond band saws to the stone cutting device according to the present invention will be explained.

First, the inner diamond band saw 20a is suspended on the outer periphery of the drive pulley 1 and the tension pulley 2 through the adjustment roller devices 5 and 6 and the guide rollers 7a and 8a. Then, the diamond band saw 2 is set so that the adjustment devices 5 and 6 can cut the stone 22 straight.
Adjust 0a. Then, a tension device (not shown) attached to the tension pulley 2 tensions the diamond band saw 20a. Next, the second diamond band saw 20b is suspended on the outer periphery of the drive roller group 3a and the tension roller group 4a in the same manner, and the adjustment devices 5 and 6 are used to suspend the second diamond band saw 20b from the already attached first diamond band saw 20a. The diamond band saw 20b is stretched so that the diamond band saw 20a and the diamond band saw 20b are parallel to each other with a desired spacing (corresponding to the thickness of the stone slab to be cut). In this way, a predetermined number (5 in this example) of diamond band saws 20a to 20e are sequentially attached, and the clamping device attached to the lower part of the drive roller groups 3a to 3e is operated, and the drive roller groups 3a to 3e are Each diamond band saw 20a to 20e is clamped.

The operation of the stone cutting device configured as described above will be explained.

When the drive motor 9 is started, its rotation is transmitted to the drive pulley 1 by a belt 12 stretched between belt pulleys 10 and 11, as shown in FIG. As the drive pulley 1 rotates, the diamond band saw 20a is rotated by the drive pulley 1.
and tension pulley 2. When the diamond band saw 20a rotates, the drive roller group 3a that clamps the diamond band saw 20a rotates, and the diamond band saw 20b on the outside of the drive roller group 3a rotates.
rotates in the opposite direction to the diamond band saw 20a. In addition, Diamond Band Saw 2
The drive roller group 3b pinching the diamond band saw 20c rotates in the same direction as the drive pulley 1, causing the diamond band saw 20c to rotate. In this way, the diamond band saws 20a to 20e sequentially rotate. This rotational motion is sequentially transmitted from the innermost diamond band saw 20a to the outermost band saw 20e, and the stone cutting device S is brought into operation.

Next, drive pulley 1, tension pulley 2, drive roller groups 3a to 3e, and tension roller group 4a.
~4e, the base B on which the adjustment roller devices 5 and 6, the guide rollers 7a to 7e and 8a to 8e, the drive motor 9, the band saw 20, etc. are mounted is lowered by a hydraulic or pneumatic device (not shown). Then, multiple thin stone slabs are simultaneously cut by cutting from top to bottom. FIGS. 4A and 4B show the state at this time.

4A and 4B show the relationship between the diamond band saws 20a to 20e and the backing plate 24 during cutting, and the diamond band saw 20a
The caul plate 24 suspended above ~20e descends at the same speed as the descending speed of the diamond band saws 20a~20e, and the diamond band saw 20
It enters into the groove of the stone 22 cut by a to 20e. The backing plate 24 has a thickness slightly thinner than the width of the cutting groove and has a tapered lower end 24a, so that it smoothly enters the cutting groove. By configuring the backing plate 24 to be inserted into the cutting groove in this manner, damage to the stone material can be prevented during cutting and before and after the cutting is completed.

In addition, although five diamond band saws are attached in the said Example, the number of diamond band saws may be 2-4 or 6 or more.
As in the above embodiment, according to the stone cutting device S that uses five diamond band saws, the cutting time per stone slab is one fifth of that of the conventional stone cutting device that uses one diamond band saw. can be done.

FIGS. 5 and 6 show other embodiments of the present invention, with FIG. 5 being a plan view of the device, and FIG. 6 showing the drive mechanism for the drive roller group. In this example, the same members and the like as those in the above embodiment are given the same reference numerals, and their explanations will be omitted.

In the above embodiment, an example was shown in which a diamond band saw was driven using a driving pulley as a driving source and a group of driving rollers, but this example shows an example in which a pulley was not used as a driving source.

As shown in FIG. 5, large pulleys 31 and 3
As in the first embodiment, the large pulleys 32 and 2 are arranged on the base B with a wide interval left and right.
On the outside (corner part) of the drive roller group side of the large pulley 31 facing the roller group 33a, 33b, 33 for suspending the diamond band saw.
c, 33d are arranged, and the roller groups 33a to 33
On the other outside (corner part) of the side where d is placed,
Roller groups 35a and 35 as adjustment devices for narrowing the spacing between each diamond band saw 20
b, 35c, and 35d are arranged in multiples.

On the other hand, on the outside of the large pulley 32, roller groups 34a to 34d and roller groups 36a to 36d as adjustment devices are arranged in multiple layers, similar to the roller groups 33a to 33d and 35a to 35d. A tension device (not shown) is attached to the large pulley 32 and the roller groups 34a to 34d.

The outer periphery of both pulleys 31 and 32, the roller group 33a,
Adjustment device 35a, roller group 34a, adjustment device 36
outer periphery of roller group 33b, adjusting device 35b, roller group 34b, adjusting device 36b, roller group 33c, adjusting device 35c, roller group 34c, outer periphery of adjusting device 36c, roller group 33d, adjusting device 3
5d, one diamond band saw 20 on the outer periphery of the roller group 34d, and the adjustment device 36d.
is installed.

At the front of the inner surfaces of the large pulleys 31 and 32 (lower part in FIG.
In order to prevent the shake of 20e, a pair of shake prevention devices 37 and 38 are provided. Shake prevention device 3
7 and 38 regulate the diamond band saw 20 using rollers, or use a band-like regulating plate. It uses commonly known techniques.

Drive roller groups 39a to 39f for driving the diamond band saws 20a to 20e are arranged behind the inner surface of the large pulley 31 (upper side in FIG. 5). This drive roller group 39a to 39f
A belt pulley 42 is disposed below at least one drive roller of a predetermined drive roller group (in this example, the innermost drive roller group 39a). In addition, each drive roller group 39a to 39f has a diamond band saw 2.
A clamping device (not shown) for clamping 0 is attached.

Further, as shown in FIG. 6, the drive motor 40 for driving the drive roller groups 39a to 39f is
Disposed below the drive roller groups 39a to 39f,
Belt pulley 41 attached to drive motor 40
and a belt pulley 42 attached to at least one roller of the drive roller group 39a.
9a.

A stone material 22 to be cut is placed on a table 23 below the five diamond band saws 20 between the vibration prevention devices 37 and 38.

In addition, in the embodiment shown in FIG.
Although one roller 0 is used, two or more rollers may be used to drive the drive roller group. Furthermore, although one drive roller is driven by the drive motor, it is also possible to arrange a belt pulley on the drive motor and multiple drive rollers, stretch these with a belt, and drive multiple drive rollers simultaneously. .

The method of attaching multiple diamond band saws is the same as in the first embodiment, using the large pulley 3.
1, 32, roller groups 33a to 33d, 34
a~34d, adjustment devices 35a~35d, 36a~
One diamond band saw 20a to 20e is installed around the outer circumference of the large pulley 36d.
With a tension device (not shown) attached to 2,
Tension the innermost diamond band saw 20a. Next, the second diamond band saw 20b is adjusted using a pair of adjustment devices 35a and 36a so that it is parallel to and at a desired distance from the first diamond band saw 20a that has already been tensioned, and then The diamond band saw 20b is tensioned by a tension device (not shown) attached to the roller group 34a. In the same manner, a predetermined number of band saws are sequentially attached, and each band saw is clamped by a clamping device (not shown) attached to the drive roller groups 39a to 39f, and operation preparation is completed.

Next, the operation of the stone cutting device having the above structure will be explained.

When the drive motor 40 is started, its rotation is transmitted to the drive roller group 39a by a belt 43 stretched between belt pulleys 41 and 42. Then, the power is sequentially transmitted to the drive roller groups 39b to 39f via the diamond band saws 20a to 20e, and the stone cutting device S is put into operation.

Next, the entire stone cutting device S is lowered by lifting means using hydraulic pressure, air pressure, etc., and cutting work is performed in the same manner as in the previous embodiment.

Note that while the stone cutting device is fixed, the stone 22
It is also possible to simultaneously cut out a plurality of thin stone plates by raising the table 22 on which the stone is placed by lifting means using hydraulic pressure, pneumatic pressure, etc., and by feeding the stones from the bottom to the top.

In the above embodiment, the stone 22 is cut from the top, but the diamond band saw 20 is stretched so that the diamond chip is positioned above it, the table is lowered, and the stone 22 is cut from the bottom. Also good.

[Effects of the Invention] As explained above, the present invention has a diamond band saw attached to each of the outer peripheries of two large pulleys and a group of rollers arranged in multiple layers at intervals on the outside of these pulleys. However, since the spacing between each diamond band saw is adjusted by an adjustment device and the diamond bandsaw is rotated at high speed, it is possible to cut multiple very thin stone slabs in one cutting operation. This greatly improves work efficiency and significantly reduces cutting costs. For example, with a cutting device that uses five bandsaws, the cutting time per stone slab is one-fifth of that of a conventional cutting device that uses one bandsaw. If the stone slab were to be cut using conventional cutting equipment, five pieces of equipment and five pieces of stone would be required.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of a stone cutting device using a plurality of diamond band saws according to the present invention, Fig. 2 is a partially cutaway front view of Fig. 1, and Fig. 3 is a drive mechanism of a drive pulley. Enlarged view showing 4th
Figure A is a front view showing the state of the diamond band saw and backing plate during cutting, Figure 4B is a side view of Figure 4A, Figure 5 is a plan view showing another embodiment of the stone cutting device, and Figure 6 is FIG. 5 is an enlarged view showing the drive mechanism of the drive roller group, FIG. 7A is a perspective view schematically showing a conventional stone cutting device, and FIGS. 7B and 7C are shown in FIG. 7A. It is a partially enlarged view of the diamond band saw. 1... Drive pulley, 2... Tension pulley,
3a to 3e, 39a to 39f...drive roller group,
4a to 4e...Tension roller group, 5, 6, 3
5a to 35d, 36a to 36d...adjustment device, 7
a~7e, 8a~8e...Guide roller, 9,4
0... Drive device (drive motor), 10, 11, 4
1,42...Belt wheel, 12,43...Belt,
20... Diamond band saw, 21... Diamond chip, 22... Stone, 23... Table, 24... Backing plate, 24a... Lower end of backing plate, 31, 32... Large pulley, 33a-33
d, 34a to 34d...Roller group, 37, 38...
... Shake prevention device, S... Cutting device.

Claims (1)

[Claims] 1. A stone cutting device using a plurality of diamond band saws, comprising two opposing pulleys;
It consists of a group of rollers arranged in multiples at intervals on the outside of each of the pulleys, an adjustment device for adjusting the spacing between the plurality of diamond band saws, and a drive device for rotating the diamond band saws. A stone cutting device using a plurality of diamond band saws, characterized in that an endless diamond band saw is installed around the outer periphery of the two pulleys and each roller group of the multiple roller groups. 2. A guide roller for guiding the linear portion of each diamond band saw is disposed between the pulleys, and the adjustment device is disposed between the pulleys, and one of the pulleys and multiple rollers arranged outside the pulley. 2. A stone cutting device using a plurality of diamond bandsaws according to claim 1, further comprising a drive device connected to at least one roller group of said multiple roller groups. 3. A stone cutting device using a plurality of diamond band saws according to claim 1, further comprising a vibration prevention device disposed between the pulleys to prevent vibration of the diamond band saw. 4. A stone cutting device using a plurality of diamond band saws according to claims 1, 2 and 3, characterized in that a patch plate is suspended above each of the diamond band saws. 5. A stone cutting device using a plurality of diamond band saws according to claims 1, 2 and 3, further comprising a mounting table which can be moved up and down on which the material to be cut is placed.