JPH01235602A - Stone material cutting device - Google Patents

Abstract

PURPOSE:To cut out a large number of stone sheets at once, accurately and promptly and also reduce the harm of noise and dust by stringing a plurality of loops between a pair of drums and driving rotatingly the drums, at the same time, giving a relative movement between the loops and the stones. CONSTITUTION:A diamond beads wire 12 is wound round between the drums 7, 8 so as to actuate an air cylinder 18 and so a bearing 10 at a follower side is pulled in the direction of an arrow P, so that the diamond heads wire, namely, loops 15 may be given an appropriate tension. A motor 11 is rotated in order that the drums 7, 8 are rotated drivingly with the result that the diamond beads wire 12 is run circulatingly at a high speed. Accordingly, the lower part of the drums 7, 8 of respective loops is run in the direction of an arrow S in a strained state. The stone material 28 is lifted up together with a bogie through the actuation of a lift apparatus 6, further the relative movement in the upward and downward direction is performed between the loops 13 and thereof, so than respective loops may cut some cutting grooves onto a stone material surface, wherein the cutting grooves become deep accompanying the lift of the stone material 28.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a stone cutting device. More specifically, the present invention relates to a stone cutting device that can cut out a large number of stone slabs with a single feeding operation.

Note that in this specification, stone is a concept that includes all hard and brittle materials such as ceramics, new ceramics, and concrete, in addition to ordinary stones.

[Prior art] As a stone cutting device, a disk-shaped diamond cutter (a metal disk with a plurality of chips containing diamond abrasive grains provided on its outer circumference, a type of cutting wheel) that rotates at a higher speed than before has been used. It is generally known that the method uses This cutter cuts while moving a high-speed rotating diamond cutter along the direction of the cut line under the guidance of a guide.

On the other hand, a method is also known in which an iron plate that reciprocates at high speed or an endless wire lobe that circulates at high speed is sprinkled with water and an abrasive such as iron sand or carborundum to abrade and cut the iron plate.

Even in such conventional stone cutting equipment, -
It is known to have a structure in which multiple slabs of stone are cut out at once by a single feed.

[Problems to be Solved by the Invention] In the case of the diamond cutter described above, since the diamond cutter escapes to the side with less load, it is difficult to cut on accurate vertical and parallel planes. Since there is a limit to the number of sheets that can be cut with a cutter, the number of sheets that can be cut at a time is extremely small, about 10 at most. Also, if you use an iron plate, you can cut about 20 to 100 pieces at a time.
There is a problem in that the cutting speed is slow and a feed rate of only about 5 to 25 mm can be given per hour.

In addition, both the use of diamond cutters and iron plates produce a large amount of noise and a large amount of dust, which causes environmental deterioration both inside and outside the factory, especially when cutting a large number of stone slabs at once. There is.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a stone cutting device that can cut a large number of stone slabs at once, accurately and quickly, and generates less noise and dust.

[Means for Solving the Problems] A stone cutting device of the present invention includes a pair of drums whose axes are arranged parallel to each other so as to face each other, and a plurality of drums parallel to each other between the pair of drums. at least one diamond bead wire stretched to form a loop group consisting of loops, a rotary drive means for rotationally driving the drum, and a relative distance between the loop group and the stone to be cut. and a feed drive means for giving the desired movement.

The loop group may be comprised of a single diamond bead wire having a loop section that is stretched between drums and a return section that connects the loop sections away from the drum.

Alternatively, the loop group may be comprised of a plurality of endless diamond bead wires strung together to form a closed loop between each drum.

[Function] When the pair of drums rotates, the loops of diamond bead wire stretched thereon are driven to circulate all at once. When the loops and/or stones are moved in a direction perpendicular to the loops, a large number of cutting grooves are formed at once as the loops are moved.

A large number of stone slabs can be obtained at once by cutting the stone as is, or by stopping just before the stone is completely cut and breaking off the remaining part.

Diamond bead wire contains abrasive grains in itself, so there is no need to sprinkle abrasive grains from the outside, and you only need to supply cutting water, so there is minimal noise and dust, and there is no need to sprinkle abrasive grains from the outside. Each can be cut accurately and at high speed.

In addition, the diamond bead wire has much less contact with the stone compared to the iron plate type, and the resistance it receives from the stone is simple as it only faces the opposite side of the cutting direction, so there is a possibility that the cutting groove will bend. Less is. Therefore, a large number of cutting grooves can be formed in parallel with high accuracy.

[Embodiment] Next, a stone cutting device of the present invention will be explained with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the device of the present invention, FIG. 2 is a front view of the device shown in FIG. 1, and FIG. 3 is a sectional view of a main part of the drum portion of the device shown in FIG. Fig. 4 is a partially enlarged front view of the diamond bead wire used in the device of the present invention, Fig. 5 is a sectional view taken along the line (V)-(V) of Fig. 4, and Figs.
Each figure is a schematic perspective view showing an example of a group of loops of diamond bead wire according to the present invention, and FIG. 9 is a schematic perspective view showing another embodiment of the apparatus of the present invention.

The device shown in Fig. 1 has a driving side base (2) and a driven side base (3) that are each fixed to a floor surface (1), and is provided between the two bases (2, (3). A cart (5) and a lifting device (6) are provided within the bit (4).

A driving drum (7) and a driven drum (8) are rotatably supported on the driving side base (2) and the driven side base (3) by bearings (9), QO), respectively.

The drive side base ('2J) is further provided with two motors 011 for rotationally driving the drive drum ('7), each of which is connected to the drive drum (7) via a transmission means such as a V-belt. .

A loop group is stretched, which is made up of a driving drum (one diamond bead wire 02 between the sword and the driven drum (8)) that is hung and turned many times.

That is, one diamond bead wire 02) is connected to the driving drum (7) and the driven drum (7) as shown in FIG.
8) are turned alternately, and the hooks are passed to two idle pulleys 04) rotatably provided above the device.
It is arranged along a circular path returning through a return loop 6.

The bearing (to) of the driven drum (8) is attached to the driven side base (3)
It is provided above so as to be movable in the direction in which the loop group n extends, and tension is constantly applied to the loops using two air cylinders 0. Note that the number of the motors and air cylinders may be further increased as necessary, and may be one. Further, a hydraulic cylinder may be used instead of the air cylinder Oa.

The drums (7) and (8) are made of a lightweight, hard and strong material such as a hard aluminum alloy casting, and as shown in FIG. 3, a large number of annular grooves Oa are formed on the surface thereof. has been done. The interval between the annular grooves Oa is based on the thickness of the commonly used stone slab (for example, 22 mm) and the diameter of the diamond bead wire (for example, 12III mm).
It is determined by the sum of I and (for example, 34 mm), and usually
It is 4 to 44 ωm.

Note that in FIG. 1, the spacing is large so that the drawing can be easily understood. In reality, the number of loops is usually 50 to 10.
The number is about 0, and it can also be 200 or more.

On the inner surface of each annular groove 0a, in order to protect the diamond bead wire 02) and drive it efficiently, there is a protection made of a wear-resistant hard material such as hard urethane rubber (JIS hardness TLSA 50-70, especially around 60). layer 0
9 is provided by, for example, adhesion. Note that the diameters of the drums (7) and (8) are limited by the minimum bending radius of the diamond bead wire;
Diameter 2-4 for +m diamond bead wire
A size of about m is adopted. Said idle pulley 04)
The one on the driving side is rotatably provided on the driving side base (2), and the one on the driven side is rotatably provided on a frame fixed on a bearing (10) or the like.

As shown in Figure 2, the cart (5) inside the bit (4) is equipped with wheels (2D) that roll on the rail overhead, and is driven reciprocally by a winch, etc. However, of course, the wheels are rotated by a motor or the like. You may also do so.

Lifting device (6) fixed to the bottom of the bit (4)
For example, a combination of one to five hydraulic cylinders that can be operated in synchronization is used. However, a type of lift device in which a ball screw mechanism is driven by a servo motor or the like, a lift device using a link mechanism, etc. may also be adopted.

Next, preferred examples of the diamond bead wire used in the present invention will be explained with reference to FIGS. 4 and 5.

A typical diamond bead wire is made by crimping a number of short steel tubes Q4 directly arranged at equal pitches on top of a wire made of stranded metal wire, etc., and crimping four cylindrical diamond beads on top of each tube. It is soldered.

Note that the diamond beads 4 are a type of grindstone prepared by embedding diamond abrasive grains inside metal.

In the device of the present invention, it is preferable to use a synthetic resin coating layer (2) interposed between the wire and the steel tube (2), so that the beads (4) and the tube (2) are interposed between the wire and the steel tube (2).
The impact force applied to the diamond bead 4 and the tube Q4 are respectively protected. It is preferable that the coating layer (2) covers the entire wire.

Furthermore, when a groove extending in the axial direction is formed on the surface of the diamond bead 4, cutting water and powder from the cut stone can be smoothly discharged, resulting in high cutting efficiency.

Next, a method of using the stone cutting device constructed as described above will be explained.

First, as shown in Figure 1, hang a piece of diamond bead wire between the drums (8) and turn it, and secure both ends with caulking rings to form an endless shape.-
After being processed into an endless shape, the diamond bead wire 02) can be used as is until it breaks and breaks.

Next, the air cylinder Oe3 is operated to pull the driven side bearing in the direction of arrow P, applying appropriate tension to the diamond bead wire Oz1, that is, the loop group (2). At this time, it is preferable to alternately tension the wire and rotate the drum to equalize the tension between each loop.

Next, place the stone ■ while pulling out the cart (5) inside the bit (4) in the direction of the arrow (Q1), return the cart (5) to the specified position and set it. Fix it on the trolley with etc.

Next, the motor (11) is rotated to rotate the drums (7) and (8).
) is rotated to circulate the diamond bead wire at high speed. Thereby each loop's drum (7)
, (8) all run together in the direction of arrow (S) in a strongly tensioned state.

When the lift device 0θ is activated to raise the stone together with the cart (ε) and perform relative movement in the vertical direction between it and the loop group U, each loop cuts a cutting groove into the surface of the stone, and the stone is trapped. As the value increases, the cutting groove becomes deeper. Cutting speeds are typically about 500-800 ff1g+/hr.

During cutting, cutting water is poured from above the stone, or further upstream in the running direction of the diamond bead wire, or a jet of high-pressure water is blown to flow out the worn stone powder and remove the diamond. Cool the beads. Lifting by the lift device (6) is stopped before the stone is completely cut, and then the stone is lowered. It is preferable to keep the diamond bead wire 02) circulating during the descent.

Finally, a large number of stone slabs can be hung by pushing the stone slabs separated by cutting grooves inward and breaking the continuous portion at the bottom.

Note that the continuous part of the stone may be broken before it is lowered, or the last part may be cut without leaving it in a continuous state.

The number of cutting grooves is up to the maximum number of loops, and the maximum height of stone that can be cut is the same as the diameter of the drum. Also 2
Both of the main motors (old motor) may be rotated, or only one motor may be driven.

In the loop group configurations shown in FIGS. 1 and 6, one long diamond bead wire is used, so
The work of fixing both ends in an endless pattern only needs to be done once. Another advantage is that the wire does not wear out over a long period of time, and even if the wire breaks, it can be easily repaired. Furthermore, since there is only one loop, the tension in each loop is approximately equal, which allows for smooth cutting.

However, the device of the present invention is not limited to such a case, but can also be constructed from a plurality of endless diamond bead wires, as shown in FIG. 7 or 8, for example.

In the device shown in FIG. 7, one diamond bead wire 02) constitutes a loop group consisting of 3 to 4 loops,
A large number of loops are obtained by combining multiple of them.

With this configuration, for example, the drum can be divided into two or more parts and driven, and the interval between loop groups belonging to different diamond bead wires can be changed as necessary.

In the device shown in FIG. 8, each loop consists of an endless diamond bead wire. Like the device shown in Figure 7, this device can be constructed so that the spacing between each loop can be adjusted freely, and even if one wire breaks during cutting, it can be cut directly with other wires. can continue. Furthermore, since the part passing below and the part passing above the drum run in the same vertical plane, it is possible to cut stones that are thicker than the diameter of the drum. Further, since a return loop (6 in FIG. 6) is not required, there is an advantage that the device becomes simpler.

In the device shown in Fig. 1, the bearings (
9), (Although the structure is such that lo+ is fixed and the stone ■ is moved up and down, the present invention is not limited to such a case. For example, as shown in FIG. 9, the stone is fixed and Alternatively, the base haze can be moved up and down.

In the device shown in Fig. 9, the base part (3) can be raised and lowered using four columns (31) as guides, and there are two sets of raising and lowering drive mechanisms,
For example, the entire base part (2) can be raised and lowered using a combination of a ball screw (32) and a servo motor (33). This can be adopted as a construction of a small or mobile stone cutting device.

The lift device (6) shown in FIG. 1 and the guide and lifting mechanism shown in FIG. 9 may be combined to raise and lower both the stone and the base at the same time.

In other words, the device of the present invention can employ any type as long as it is possible to perform a relative feeding operation between the stone and the loop group.

[Effects of the Invention] The device of the present invention can accurately and quickly cut out a large number of stone slabs in one operation, and furthermore, the damage caused by noise and dust is slight.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the device of the present invention, FIG. 2 is a front view of the device shown in FIG. 1, and FIG. 3 is a sectional view of a main part of the drum portion of the device shown in FIG. Fig. 4 is a partially enlarged front view of a diamond bead wire used in the device of the present invention, Fig. 5 is a sectional view taken along line M-(V) in Fig. 4, and Figs. FIG. 9 is a schematic perspective view showing an example of a group of loops of bead wire, and FIG. 9 is a schematic perspective view showing another embodiment of the device of the present invention. (Main symbols in the drawing) (6): Lift device (7): Drive drum (8): Followed drum 01): Motor (121, Diamond bead wire (13, Loop group 3rd opening A15 Figure O8 Figure 12 Diamond Heath) April 14, 1988 1. Indication of the case 1986 Patent Application No. 63808 2. Name of the invention Stone cutting device 3. Person making the amendment Relationship with the case Patent applicant address Tanabe, Wakayama Prefecture Subject of 15 amendments to 116 Ichihoya-cho (1) “Detailed explanation of the invention” column of the specification (2) Drawings (Figures 1, 2 and 9) Contents of 6 amendments (1) "Hydraulic cylinder (21) J" on page 10, line 8 of the specification is corrected to "hydraulic cylinder n". 7. List of attached documents (1) One copy of the revised drawings (Figures 1, 2, and 9).

Claims (1)

[Claims] 1. A pair of drums whose axes are arranged parallel to each other so as to face each other, and a loop group consisting of a plurality of loops parallel to each other is formed between the pair of drums. at least one diamond bead wire suspended; a rotary drive means for rotationally driving the drum; and a feed drive means for imparting relative movement between the loops and the stone to be cut. A stone cutting device consisting of. 2. The apparatus of claim 1, wherein the group of loops is a length of diamond bead wire having a loop section that is stretched between the drums and a return section that connects the loop sections away from the drum. 3. The apparatus of claim 1, wherein each loop group comprises a plurality of endless diamond bead wires strung to form closed loops between the drums.