JP3710716B2 - Wire saw machine accumulator and wire saw machine equipped with the same - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an accumulator for use in a wire saw machine that cuts a hard material such as metal, stone, glass, ceramic, etc. (hereinafter referred to as “stone material”) to an appropriate thickness by a reciprocating wire, and a wire saw machine including the accumulator .
[0002]
[Prior art]
Usually, if you want to cut a hard material such as a small lump of stone, you can cut it with a rotary blade with diamond attached, but it was difficult to cut a large lump of stone with a large volume. . In addition, it is difficult to maintain accuracy with a rotary blade to slice from such a stone material with a thin plate thickness, and work efficiency is poor when slicing a large number of sheets.
[0003]
Therefore, in order to meet such a demand, a wire saw machine has been used in which a filed wire is reciprocated (“reciprocating”) and cut. Usually, the wires used as the cutting blades of these wire saw machines are used effectively as long as they have a cutting function, so that they are reciprocated several times (usually 5 to 10 reciprocations) until they are almost consumed. This reciprocating travel is performed by placing a wire temporary storage mechanism called an accumulator before and after the cutting portion where the wire moves, and performing retraction / retraction from here.
[0004]
As a conventional example of such a configuration, for example, there is an accumulator disclosed in JP-A-2-30490. This was a mechanism for temporarily storing a predetermined amount of length by pulling wires by alternately hooking wires between a plurality of pulleys arranged above and below, and expanding and contracting the intervals of the pulleys by a crank mechanism. .
[0005]
[Problems to be solved by the invention]
However, wire breakage has been a problem with such wire saw machines. That is, since the wire saw machine cuts by reciprocating the stone or the like as described above, for example, when the wire tries to return in the opposite direction at the cutting part, the wire on the wire supply part side from the cutting part is There is a possibility that the tension is low and the slack is generated. Further, the next time the wire travels in the opposite direction, it is applied as an instantaneous pulling force (impact force), which places a heavy burden on the wire. Therefore, in order to always apply a constant force to the wire W to eliminate slack, it is necessary to separately provide scissors on both sides of the cutting portion, and the configuration of the wire saw machine has been complicated.
[0006]
【the purpose】
Therefore, the present invention has been made in view of the above problems, and by making the accumulator for temporarily storing the reciprocating wire into a structure in which excessive tension is unlikely to be generated and a simple structure, a wire cutting accident can be prevented. An accumulator for use in a wire saw machine for preventing the use of wires efficiently and reducing the number of parts to reduce the failure rate and thus reducing the cost. A wire saw machine is provided.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is configured as follows.
That is, in claim 1, in the accumulator (3, 5) of the wire saw machine, which is separately arranged on the front side and the rear side of the cutting part (2) of the wire saw machine, and temporarily stores the repetitive use of the reciprocating wire. said front stage and rear stage accumulator (3,5), a plurality of stationary pulleys (30 a to 30 c, 50 a to 50 c) consisting essentially of the other which each mounted rotatably coaxially of each stationary axis (31, 51) stationary pulley group (30, 50), a plurality of respectively mounted rotatably coaxially of those said respective stationary axes (31, 51) to each elevator shaft which is disposed vertically movable respectively to face (34, 54) number of lifting pulleys (32 a to 32 c, 52 a - 52 c) consist of respective different lifting pulley group consisting of (32, 52), each wire stationary pulley (30 a to 30 c, 50A～5 c) and the opposing lifting pulley (32 a to 32 c, and wound alternately between 52 a - 52 c), each hanging lifting pulley group (32, 52) holding the wire moving each lifting of An accumulator of a wire saw machine that absorbs slack of the wire and applies tension to the wire by moving the elevating shaft (34, 54) up and down separately by the own weight of the pulley group (32, 52). .
[0008]
In claim 2, in the configuration of each of the separate stationary pulley groups (30, 50) and each of the separate lifting pulley groups (32, 52) of claim 1, the wires are connected from the cutting part (2) side through the wires. towards the feed unit (1) or wire winding section (4), characterized in that an accumulator of the plurality of pulleys progressively wire saw machine configured by arranging such that the small diameter constituting the respective pulley group And
[0009]
In claim 3, a multi-groove pulley (22) that drives and rotates to run the wire, and a cutting section (2) that reciprocates the wire stretched between the multi-groove pulley (22) and cuts the object. The accumulators (3, 5) of the wire saw machine according to claim 1 or 2, wherein the accumulators (3, 5) of the wire saw machine according to claim 1 or 2, which are disposed respectively on the front side and the rear side of the cutting part (2) and temporarily store the repetitive use of the reciprocating wire A wire supply unit (1) for intermittently supplying a new wire to the accumulator (3), a wire winding unit (4) for intermittently winding a waste wire from the subsequent accumulator (5), and the cutting unit (2 ), And a lifting machine that moves the object up and down toward the cutting part (2).
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, exemplary embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration perspective view of the wire saw machine of the present embodiment, and FIG. 2 is an explanatory view of the main part of the wire saw machine of the present embodiment. In this wire saw machine, a pre-stage accumulator 3 is provided between a wire supply unit 1 that supplies a new wire W and a cutting unit 2 that cuts stone or the like S. The front-stage accumulator 3 includes a stationary pulley group 30, a slide rail 33, and a lifting pulley group 32.
[0011]
The stationary pulley group 30 includes three stationary pulleys 30a, 30b, and 30c having coaxial diameters that rotate independently on the same axis of the stationary shaft 31 and gradually expand toward the shaft support side. Is holding in. The slide rail 33 is disposed below the stationary pulley group 30 with the longitudinal direction as the vertical direction, and engages the slide piece 33a. The slide piece 33a is provided with a lifting shaft 34 which will be described later.
[0012]
The raising / lowering pulley group 32 rotates on the same axis as the raising / lowering shaft 34 facing the stationary shaft 31 so as to be able to move up and down independently, and is gradually increased in diameter toward the shaft support side. The pulleys 32a, 32b, 32c, and 32d are configured to be held by the lifting shaft 34 of the slide piece 33a. A guide pulley 6 is disposed between the pre-stage accumulator 3 and the wire supply unit 1 and between the cutting unit 2. The wire supply unit 1 includes a supply bobbin 10 around which a new wire W is wound by a predetermined amount, and a drive motor M2 for intermittently rotating the supply bobbin 10.
[0013]
Further, a post-stage accumulator 5 having the same configuration as that of the front-stage accumulator 3 and symmetrically arranged with respect to the cut-out section 2 is provided between the wire winding section 4 and the cutting section 2 for winding the wire W to be discarded. ing. The latter-stage accumulator 5 includes a stationary pulley group 50, a slide rail 53, and a lifting pulley group 52.
[0014]
The stationary pulley group 50 is composed of coaxial pulleys 50a, 50b, and 50c of three types of coaxial diameters that rotate independently on the same axis as the stationary shaft 51 and gradually expand toward the shaft support side. Is holding in. The slide rail 53 is disposed below the stationary pulley group 50 with the longitudinal direction as the vertical direction, and engages the slide piece 53a. The slide piece 53a is provided with a lifting shaft 54 described later.
[0015]
The raising / lowering pulley group 52 rotates independently on the same axis of the raising / lowering shaft 54 disposed so as to be movable up and down facing the stationary shaft 51, and the raising / lowering pulley group 52 gradually increases in diameter toward the shaft support side. The pulleys 52a, 52b, 52c, and 52d are configured to be held by the lifting shaft 54 of the slide piece 53a. A guide pulley 6 is also disposed between the rear accumulator 5 and the cutting unit 2 and between the wire winding unit 4. The wire winding unit 4 includes a winding bobbin 40 for winding the wire W for disposal as appropriate and a drive motor M3 for intermittently rotating the winding bobbin 40. The lifting pulley groups 32 and 52 absorb a slack of the wire W and give a predetermined own weight in order to apply tension to the wire W, and in this embodiment, the weight is about 180 kg as a whole.
[0016]
A driving motor M1, which is a driving means for causing the wire W to reciprocate in the cutting portion 2 (this is referred to as “reciprocating”), is configured to be able to rotate forward and backward as appropriate. . The output shaft 24 is connected to the rotational drive pulley 20 and is rotated via a timing belt 21 so that the rotational shafts 23a of the three multi-groove pulleys 22a, 22b, and 22c are arranged in parallel to the corners of the regular triangular prism. The rotational driving force is transmitted to 23b and 23c.
[0017]
On the side peripheral surface of the multi-groove pulley 22, a single-turn groove is formed at a predetermined interval, and the wire W is wound at a predetermined interval by being engaged with the groove. The number of windings and the winding interval of the wire W in the multi-groove pulley 22 are appropriately set according to the desired specification thickness and number of stones S or the like. In addition, since the structure itself of this cutting part 2 is the same as that of a conventionally well-known wire saw machine, detailed description of detail is abbreviate | omitted.
[0018]
Action of Embodiment
Next, the operation of the wire saw machine configured as described above will be described. This wire saw machine cuts stones and the like S by pressing the wire W reciprocating by placing and fixing the stones and the like S to be cut on the work table T and moving them up and down as in the past. It is. Here, the traveling direction of the wire W from the wire supply unit 1 side to the wire winding unit 4 side is the X direction, the traveling direction of the wire W from the wire winding unit 4 side to the wire supply unit 1 side is the Y direction, Used in the following description.
[0019]
The driving rotational force due to the forward / reverse switching of the driving motor M1 passes through the output shaft 24, the rotational driving pulley 20, the timing belt 21, and the rotational shafts 23a, 23b, and 23c to the multi-groove pulleys 22a, 22b, and 22c of the cutting unit 2. The wire W travels in a reciprocating manner. In the present embodiment example, the wire W corresponding to a length of 10 m is set to reciprocate 10 times in the cutting portion 2, and is set to be replaced with a new wire W by 1 m for each reciprocation in the process. .
[0020]
Further, the winding of the wire W in the pre-stage accumulator 3 is sequentially clockwise through the guide pulley 6 on the wire supply unit 1 side to the distal end side of the stationary pulley group 30 from the lifting pulley 32a on the distal end side of the lifting pulley group 32. After winding around the stationary pulley 30a, the lifting pulley 32b, the stationary pulley 30b, the lifting pulley 32c, and the stationary pulley 30c are wound in this order, and finally the cutting part is moved from the lifting pulley 32d on the shaft support side of the lifting pulley group 32. Wind around the guide pulley 6 on the second side.
[0021]
The winding of the wire W in the post-stage accumulator 5 is performed clockwise through the guide pulley 6 on the side of the cutting portion 2 in turn clockwise from the lifting pulley 52d on the lifting pulley group 52 side to the stationary pulley on the shaft support side of the stationary pulley group 50. After winding around 50c, the elevating pulley 52c, stationary pulley 50b, elevating pulley 52b, stationary pulley 50a are wound in this order, and finally the elevating pulley 52a on the distal end side of the elevating pulley group 52 is connected to the wire winding unit 4 side. The guide pulley 6 is wound around.
[0022]
In the setting procedure of the wire W in such a setting, first, a wire W of about 9 m is wound around the former stage accumulator 3 in one turn. In this state, when the wire W driven by the rotational drive of the multi-groove pulley 22 of the cutting unit 2 is caused to travel in the X direction, the wire W is pulled according to this and the lifting pulley group 32 engaged with the slide rail 33 is raised (arrow). a) Furthermore, in addition to this, the drive motor M2 is activated and a new wire W is supplied from the supply bobbin 10 by 1 m, and the 10 m wire W moves in the X direction.
[0023]
The traveling in the X direction causes the lifting pulley group 52 engaged with the slide rail 53 of the rear accumulator 5 to descend by its own weight and wind the wire W (arrow b). 10 m of the wire W that has contributed to the cutting operation is taken up. Here, since the winding length of the rear stage accumulator 5 is 9 m, the remaining 1 m is wound up to the winding bobbin 40 by the start of the drive motor M3 that is started intermittently. become.
[0024]
Next, when the multi-groove pulley 22 is reversely rotated by switching the drive motor M1, the wire W travels in the Y direction, and the lifting pulley group 52 engaged with the slide rail 53 of the post-stage accumulator 5 is pulled by the wire W. Ascending (arrow c), the wire W for 9 m moves in the Y direction. The traveling in the Y direction causes the lifting pulley group 32 engaged with the slide rail 33 of the previous accumulator 3 to descend by its own weight and wind the wire W (arrow d). 9 m of the wire W that has contributed to the cutting operation of S is wound up. Here, since the winding length of the pre-stage accumulator 3 is 9 m, in order to unwind the wire W in the X direction again, the driving motor M1 that starts intermittently as described above is activated by 1 m at the end. The new wire W for the minute is added.
[0025]
By repeating such operations, the pre-stage accumulator 3 adds 1 m of the new wire W from the wire supply unit 1 and supplies 10 m to the cutting unit 2 in the forward path (movement in the X direction), and returns (Y direction). In the movement), 1 m is left in the subsequent accumulator 5 and 9 m is wound up.
[0026]
On the other hand, the post-stage accumulator 5 winds 10 m in the forward path, unwinds 9 m while leaving 1 m in the return path, and supplies the unwinding part 2 to the cutting unit 2. It is intended to be wound around.
[0027]
Note that winding and unwinding by the front-stage accumulator 3 and the rear-stage accumulator 5 are performed by the respective lifting pulley groups 32 and 52, and the drive motor M2 of the wire supply unit 1 and the drive motor M3 of the wire winding unit 4 are performed. Is set to start intermittently.
[0028]
Further, the pre-stage accumulator 3 and the post-stage accumulator 5 according to the present embodiment do not have their own rotational drive source, but one side is raised or lowered by the running force of the wire W due to the rotation of the rotary drive pulley 20 of the cutting unit 2. The pulley groups 32 and 52 are suspended and held. In other words, the tension of the wire W that contributes to the cutting of the stone or the like S in the cutting part 2 is appropriately set according to the balance of the weights of the lifting pulley groups 32 and 52 of the front and rear accumulators 3 and 5. .
[0029]
[Possibility of other embodiments]
In the wire saw machine of the above-described embodiment shown in FIG. 1, it has been described that the wire W travels 10 m and then returns 9 m, but is not restricted to this, the hardness of the stone S or the like to be cut, the properties of the wire W, etc. Depending on the difference, it is possible to appropriately set the length of reciprocating travel and the length of return. In this embodiment, the transmission of the rotational force from the drive motor M1 to the cutting unit 2 uses a timing belt, but a chain, a gear, or the like may be used instead.
[0030]
The front-stage accumulator 3 and the rear-stage accumulator 5 are constituted by a plurality of stages of different-diameter stationary pulley groups 30 and 50 and lifting pulley groups 32 and 52 shown in the figure, because this removes the outer peripheral side of each pulley independently. The pulleys may have the same diameter. Furthermore, in light of the object of the present invention, any configuration that can wind a wire W having a predetermined length may be appropriately changed.
[0031]
【The invention's effect】
Since the present invention is configured as described above, it is not necessary to provide a separate load amount for applying tension to the traveling path of the wire W, and the configuration can be simplified by using this as an accumulator. Can do. As a result, it has the effect of reducing the occurrence rate of failure and facilitating maintenance, and significantly reducing the occurrence of wire breakage accidents, and its industrial effect is great.
[Brief description of the drawings]
FIG. 1 is a schematic configuration perspective view of a wire saw machine according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a main part of the wire saw machine of the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wire supply part 10 Supply bobbin 2 Cutting part 20 Rotation drive pulley 21 Timing belt 22 Multi-groove pulley 23 Rotating shaft (~ of multi-groove pulley)
24 Output shaft (motor M1 ~)
3 Front stage accumulator 30 Stationary pulley group 30a Stationary pulley 30b Stationary pulley 30c Stationary pulley 31 Stationary shaft 32 Lifting pulley group 32a Lifting pulley 32b Lifting pulley 32c Lifting pulley 32d Lifting pulley 33 Slide rail 33a Slide piece 34 Lifting shaft 4 Wire winding part 40 Winding bobbin 5 Post-stage accumulator 50 Stationary pulley group 50a Stationary pulley 50b Stationary pulley 50c Stationary pulley 51 Stationary shaft 52 Lifting pulley group 52a Lifting pulley 52b Lifting pulley 52c Lifting pulley 52d Lifting pulley 53 Slide rail 53a Slide piece 54 Lifting shaft 6 Guide pulley W Wire S Stone etc. T Work table M1, M2, M3 ... Drive motor

Claims (3)

In the accumulator (3, 5) of the wire saw machine, which is arranged separately on the front side and the rear side of the cutting part (2) of the wire saw machine and temporarily stores the repetitive use of the reciprocating wire,
Said front stage and rear stage accumulator (3,5), a plurality of stationary pulleys (30 a to 30 c, 50 a to 50 c) consisting essentially of the other which each mounted rotatably coaxially of each stationary axis (31, 51) Stationary pulley group (30, 50);
Those said plurality of lifting pulleys respectively mounted rotatably coaxially of each stationary shafts each elevator shaft which is disposed vertically movable respectively to face the (31,51) (34,54) (32a~32c , 52a -52c) , each separate lifting pulley group ( 32, 52) ,
Each stationary pulleys (30 a to 30 c, 50 a to 50 c) wire and the opposed lift pulley (32 a to 32 c, 52 a - 52 c) and wound alternately between each of the lifting pulley group (32, 52) The lifting shafts (34, 54) are moved up and down separately by the movement of the wire and the weight of each lifting pulley group (32, 52) to absorb the slack of the wire and to apply tension to the wire. An accumulator for a wire saw machine, characterized by being configured to add . In the configuration of each separate stationary pulley group (30, 50) and each separate lifting pulley group (32, 52),
A plurality of pulleys constituting each of the above pulley groups are arranged so as to gradually become smaller in diameter from the cutting part (2) side through the wire toward the wire supply part (1) or the wire winding part (4). 2. The wire saw machine accumulator according to claim 1 , wherein the accumulator is configured as described above. A multi-groove pulley (22) for driving and rotating the wire;
A cutting section (2) in which a wire stretched between the multi-groove pulleys (22) reciprocates to cut an object;
The accumulators (3, 5) of the wire saw machine according to claim 1 or 2, wherein the accumulators (3, 5) of the wire saw machine according to claim 1 or 2, wherein the accumulators (3, 5) are disposed respectively on the front side and the rear side of the cutting part (2),
A wire supply unit (1) for intermittently supplying a new wire to the pre-stage accumulator (3);
A wire winding unit (4) for intermittently winding a waste wire from the latter stage accumulator (5);
A wire saw machine comprising: a lifting platform disposed below the cutting portion (2) and moving the object up and down toward the cutting portion (2).

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