CN111283887A - Longitudinal cutting device for bar-shaped processed object and wire saw mounted on same - Google Patents
Longitudinal cutting device for bar-shaped processed object and wire saw mounted on same Download PDFInfo
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- CN111283887A CN111283887A CN201811503203.7A CN201811503203A CN111283887A CN 111283887 A CN111283887 A CN 111283887A CN 201811503203 A CN201811503203 A CN 201811503203A CN 111283887 A CN111283887 A CN 111283887A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/04—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by tools other than rotary type, e.g. reciprocating tools
- B28D5/045—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by tools other than rotary type, e.g. reciprocating tools by cutting with wires or closed-loop blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0058—Accessories specially adapted for use with machines for fine working of gems, jewels, crystals, e.g. of semiconductor material
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention provides a longitudinal cutting device for a rod-shaped workpiece and a wire saw mounted on the longitudinal cutting device, wherein the cutting device smoothly cuts the rod-shaped workpiece into a plurality of parts along the longitudinal direction by cutting a wire rope, and the wire saw is mounted on the cutting device. The invention comprises the following steps: a pair of inner rollers arranged side by side with a predetermined interval therebetween; a pair of outer rollers arranged side by side with the pair of inner rollers interposed therebetween; and a thread cutting device for cutting the thread rope, wherein the thread cutting device is wound around the pair of inner rollers and the pair of outer rollers, and is operated while forming a plurality of cut lines arranged side by side so as to form a cut portion between the pair of inner rollers, and the cut portion is formed by arranging the plurality of cut lines on one selected from an upper side connecting the upper ends of the pair of inner rollers and the pair of outer rollers to each other and a lower side connecting the lower ends of the pair of inner rollers and the pair of outer rollers to each other.
Description
Technical Field
The present invention relates to a longitudinal slicing apparatus for a bar-shaped workpiece and a wire saw mounted thereto, and more particularly, to a slicing apparatus for slicing a bar-shaped workpiece along its longitudinal direction by means of a cutting wire and a wire saw mounted to the slicing apparatus, in the same processing field as a silicon or sapphire ingot having a circular bar shape is sliced along its longitudinal direction to produce Seed rods.
Background
Generally, Wire saws (Wire saw) are suitable for processing stone materials such as granite, marble, etc., or for producing semiconductor wafers.
A wire saw used in a semiconductor wafer manufacturing process performs a slicing process of dividing an ingot into wafers in units of one piece.
The slicing process is widely used because the cutting wire wound around a plurality of rollers is rapidly reciprocated, a slurry (slurry) solution is sprayed on the wire, the wire is cut by friction between the slurry adhered to the cutting wire and the single crystal ingot, and the single crystal ingot can be simultaneously cut into several wafers by a wire saw, thereby improving the production efficiency per unit time.
FIG. 1 is a structure of a wire saw for dividing an ingot into a plurality of wafers, as disclosed in Korean patent laid-open publication No. 10-2016-0128115.
Referring to fig. 1, a wire saw includes: the wire winding device comprises bobbins 3a and 3b for winding a cutting wire 6, and the cutting wire 6 which runs by winding or unwinding the bobbins 3a and 3b and cuts the ingot 4 of the processed object into a plurality of plate-like members (wafers).
The cut string 6 is wound around the pair of rollers 1a,1b to form cut portions in cooperation with the rotation of the rollers 1a,1b, the cut portions 6a,6b are formed by a plurality of cut lines arranged side by side repeatedly around the pair of rollers 1a,1b, and the cut portions 6a,6b are formed on the upper and lower sides of the pair of rollers (1a,1b), respectively.
Thereby, the ingot 4 fed by the upper cutting portion 6a is cut into a plurality of wafers, and the plurality of wafers are received from the space 8 formed between the upper cutting portion 6a and the lower cutting portion 6 b.
However, as shown in fig. 2, when the bar-shaped workpiece 7 having a length larger than the height (h) between the upper cutting portion 6a and the lower cutting portion 6b is sliced (slicing) in the longitudinal direction thereof, the bar-shaped workpiece 7 cut by the upper cutting portion 6a comes into contact with the lower cutting portion 6b at the start of feeding, and is damaged.
Therefore, in the conventional wire saw, a plurality of thin plate-like members such as wafers are cut simultaneously by running around the cutting wire 6 between the pair of rollers 1a and 1b on both sides, and it is difficult to cut the bar-like workpiece 7 having a length longer than the interval between the upper cutting portion 6a and the lower cutting portion 6b in the longitudinal direction thereof.
Disclosure of Invention
Technical problem to be solved by the invention
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a cutting device capable of smoothly cutting a workpiece having a rod shape into a plurality of parts along a longitudinal direction thereof by a cutting wire, and a wire saw attached to the cutting device.
Technical scheme for solving problems
The present invention according to the above configuration provides a wire saw including: a pair of inner rollers arranged side by side with a predetermined interval therebetween; a pair of outer rollers arranged side by side with the pair of inner rollers interposed therebetween; and a cutting line which is wound around the pair of inner rollers and the pair of outer rollers, is formed by a plurality of cutting lines arranged in parallel so as to be run between the pair of inner rollers, is formed by arranging the plurality of cutting lines on one side selected from an upper side connecting the upper ends of the pair of inner rollers and the pair of outer rollers to each other and a lower side connecting the lower ends of the pair of inner rollers and the pair of outer rollers to each other, and includes cutting lines running in mutually opposite directions.
In another aspect, the present invention provides a longitudinal cutting device for a bar-shaped workpiece, including: a frame; a fixing member mounted on the frame for fixing the bar-shaped workpiece; a wire saw mounted on the frame such that a cut portion formed by cutting the wire is formed opposite to the work in a longitudinal direction of the work fixed by the fixing member; a drive member attached to the frame so that the wire saw or the fixing member moves in a direction in which the wire saw and the workpiece approach each other, thereby causing the workpiece to enter the cut portion, the wire saw including: a pair of inner rollers arranged side by side with a predetermined interval therebetween; a pair of outer rollers arranged side by side with the pair of inner rollers interposed therebetween; and cutting the wire rope, winding the pair of inner rollers and the pair of outer rollers, forming a plurality of cut lines which are mutually arranged and run so as to form a cut part between the pair of inner rollers, wherein the cut part is formed by arranging the plurality of cut lines on one side selected from an upper side for connecting the upper ends of the pair of inner rollers and the pair of outer rollers with each other and a lower side for connecting the lower ends of the pair of inner rollers and the pair of outer rollers with each other, and the plurality of cut lines comprise cut lines which run in mutually opposite directions.
In the above configuration of the present invention, the plurality of cut lines constituting the cut portion are opposite to the traveling direction of the adjacent cut line.
In the above configuration of the present invention, the pair of inner rollers are formed with: a winding groove formed in a ring shape along the circumference of the outer circumferential surface so as to wind the cut string in contact to form the cut line; and a passage groove formed in a ring shape along a circumference of the outer circumferential surface, providing a space through which the cut cord passes in a non-contact state, so that the cut cord is wound around the outer roller to form the cut line.
In the longitudinal cutting device for a bar-shaped workpiece according to the present invention, the wire saw includes a body having the pair of inner rollers and the pair of outer rollers provided at an upper end portion thereof, a through hole penetrating in a longitudinal direction of the workpiece is formed at a center portion of the body, and the cutting portion is formed above the through hole, so that as the workpiece enters the cutting portion and is cut, the cut portion of the workpiece enters the through hole, and interference between the wire saw and the cut portion of the workpiece can be prevented.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention having the above-described configuration, the processing of cutting the processed object having a rod shape by cutting the cord into a plurality of pieces in the longitudinal direction thereof can be smoothly performed. That is, the cutoff portion is formed by arranging a plurality of cutoff lines on a selected one of an upper side connecting the upper ends of the pair of inner rollers and the pair of outer rollers and a lower side connecting the lower ends of the pair of inner rollers and the pair of outer rollers, so that even if a bar-shaped processed object having a long length enters and is cut, the cut portion can be prevented from interfering with other running portions of the cut cord and being damaged.
Further, according to the longitudinal workpiece cutting device of the present invention, the through hole penetrating in the longitudinal direction of the workpiece is formed in the center portion of the body, and the cutting portion is formed above the through hole, so that the cut portion of the workpiece enters the through hole after the workpiece enters the cutting portion and is cut, and interference between the wire saw and the cut portion of the workpiece can be prevented.
Further, according to the wire saw of the present invention, the winding groove and the passing groove provided in the inner roller are configured such that the cut line of the cutting wire wound around the inner roller and the cut line of the cutting wire passing through the inner roller in a non-contact state and wound around the outer roller are both located on the same plane, and the cut portion on the plane can be formed.
Drawings
FIG. 1 is a view showing a wire saw for slicing an ingot into a plurality of wafers, which is described in Korean patent laid-open No. 10-2016-0128115;
fig. 2 is an explanatory view schematically showing a configuration in which a cut portion is formed by winding a cut string around a pair of rollers in fig. 1;
fig. 3 is a sectional configuration view of a longitudinal sectioning apparatus of a rod-shaped work according to an embodiment of the present invention;
fig. 4 is a cross-sectional view showing the configuration of a wire saw according to an embodiment of the present invention;
fig. 5 is a plan view showing the constitution of a wire saw according to an embodiment of the present invention;
fig. 6 is a sectional configuration view illustrating a wire saw according to an embodiment of the present invention, cut along the line a-a' of fig. 5;
fig. 7 is an operation explanatory view showing a process in which the work is cut by the wire saw in the longitudinal cutting apparatus of the bar-shaped work according to the embodiment of the present invention;
FIG. 8 is a sectional configuration view showing a configuration of an inner roller shown in a wire saw according to an embodiment of the present invention;
fig. 9 is a sectional configuration view for explaining a configuration in which a cutting wire is wound around an inner roller, an outer roller, and a driving roller in a wire saw according to an embodiment of the present invention;
fig. 10 is a plan view for explaining a configuration in which a cutting wire is wound around an inner roller and an outer roller in a wire saw according to an embodiment of the present invention;
fig. 11 is a configuration explanatory view for explaining a configuration in which a cut portion formed by cutting a wire is located below an inner roller and an outer roller in a wire saw according to an embodiment of the present invention;
fig. 12 is an explanatory view showing a configuration of removing a driving roller in the wire saw according to the embodiment of the invention;
fig. 13 is a configuration explanatory diagram showing a configuration in which the manner in which the cutting wire is wound around the inner roller, the outer roller, and the drive roller is changed in the wire saw according to the embodiment of the present invention.
Description of the marks
10; a frame 11; vertical frame
12; a guide rod 13; driving part
17; a work fixing member 18; workpiece support
20; a wire saw 21; main body
23; a guide hole 25; through hole
28,28 a; guide pulleys 31, 32; inner roller
31a,32 a; an additional inner roller 31 c; winding groove
31d of a resin; the passage grooves 41, 42; outer roller
41a,42 a; additional outer rollers 51, 52; driving roller
56; a motor 57; electric conveyer belt
60, adding a solvent to the mixture; cutting off the cord 61; cut-off part
61 a; additional cut- outs 62, 63; line of severance
R; processed product
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 3, a longitudinal sectioning apparatus of a rod-shaped work according to an embodiment of the present invention, includes: a frame 10; fixing members 17,18 attached to the frame 10 for fixing a rod-shaped workpiece (R); a wire saw 20 mounted on the frame 10 such that a cut portion 61 formed by cutting the wire 60 is opposed to the work (R) in a longitudinal direction of the work (R) fixed by the fixing members 17, 18; and a driving member 13 attached to the frame 10, and configured to move the wire saw 20 or the fixing members 17 and 18 in a direction in which the wire saw 20 and the workpiece (R) approach each other, so that the workpiece (R) enters the cut-off portion 61.
The frame 10 is a part forming a skeleton of the device, supports a bar-shaped workpiece (R) fixedly provided to extend vertically, and mounts a wire saw 20 for cutting the workpiece (R).
Fixing members 17,18 are attached to the frame 10 to support a rod-shaped workpiece (R) in a vertically suspended state.
The fixing members 17,18 include: a workpiece fixing member 17 provided at the upper end portion; and a plurality of workpiece supports 18 which are disposed below the workpiece fixture 17 and can support the workpiece (R) in a bar shape by grasping the middle portion thereof. The work support 18 is sequentially removed by a manual or automatic operation when the wire saw 20 is lifted and cut.
The frame 10 includes a vertical frame 11, and a driving member 13 for moving the wire saw 20 in the vertical direction is attached to the vertical frame 11.
The driving member 13 is a linear actuator fixed to the vertical frame 11 by a vertical arrangement, and in detail, mounts an LM guide.
A guide rod 12 is attached to the frame 10 and vertically arranged in parallel with the vertical frame 11, and is inserted into a guide hole 23 formed in a protrusion 22 of the wire saw 20, and when the wire saw 20 is moved up and down by the linear driver, the guide rod 12 guides the movement.
The wire saw 20 is used for cutting a workpiece (R) by a cutting wire 60 to be driven, and is mounted so as to be movable in a vertical direction by a linear actuator while being guided in the vertical movement direction by a guide rod 12 of the frame 10.
In the present embodiment, the driving member 13 moves the wire saw 20 in the upward direction to perform the cutting operation, but the driving member 13 may move the workpiece fixing member 17 downward to move the rod-shaped workpiece (R) toward the wire saw 20 to perform the cutting operation.
The wire saw 20 is arranged such that a cut portion 61 formed by a plurality of cut lines 62,63 arranged side by side faces a bar-shaped workpiece (R) in the longitudinal direction of the workpiece (R).
In the present embodiment, since the bar-shaped workpiece (R) is fixed in a vertically suspended state and the wire saw 20 is configured to cut the workpiece (R) by moving the workpiece (R) from the lower side to the upper side by the driving member 13, the lower end of the wire saw 20 is provided to face the cut portion 61 of the wire saw 20.
Referring to fig. 4 to 6, the wire saw 20 is provided with a through hole 25 penetrating from the center of the body 21 in the longitudinal direction of the workpiece (R), and a cut portion 61 is formed by a cutting string 60 running above the through hole 25.
Since the through hole 25 penetrating in the longitudinal direction of the workpiece (R) is formed in the center of the body 21 and the cut-off portion 61 is formed above the through hole 25, as shown in fig. 7, after the workpiece (R) enters and is cut off by the cut-off portion 61, the cut-off portion of the workpiece (R) enters the through hole 25, and thus the wire saw 20 can be prevented from interfering with the cut-off portion of the workpiece (R).
The cut portion 61 is a portion formed by arranging a plurality of cut lines 62,63 for cutting the string 60 in parallel, the cut portion 61 is formed between the pair of inner rollers 31,32 and the pair of outer rollers 41,42, and the pair of inner rollers 31,32 and the pair of outer rollers 41,42 are provided at the upper end portion of the body 21.
Referring to fig. 4 and 5, in the present embodiment, a pair of inner rollers 31,32 and a pair of outer rollers 41,42 are provided at the upper end portion of the main body 21, and another pair of additional inner rollers 31a,32a and a pair of additional outer rollers 41a,42a are provided in a direction forming a right angle. Therefore, the cut portion formed by the cutting string 60 is formed into two cut portions 61,61a crossing each other at right angles, and the processed object (R) entering the two cut portions 61,61a can be cut in a grid shape.
Since the two cut portions 61,61a crossing each other at right angles do not interfere with each other, the height of the pair of inner rollers 31,32 and the pair of outer rollers 41,42 and the height of the other pair of additional inner rollers 31a,32a and the pair of additional outer rollers 41a,42a are different from each other, and the two cut portions 61,61a are formed at different heights from each other.
The two cut portions 61,61a are formed by one cut wire 60 running, the cut wire 60 running by winding the pair of inner rollers 31,32 and the pair of outer rollers 41,42 is guided by the guide pulleys 28,28a to switch the running direction of the cut wire 60, and the other pair of additional inner rollers 31a,32a and the pair of additional outer rollers 41a,42a are also wound with the same cut wire 60 to form an additional cut portion 61 a. It goes without saying that the cut portions 61 may be formed by using two cut strings 60 different from each other.
The formation structure and operation of the cut portion 61 for cutting the string 60 in a state where the pair of inner rollers 31,32 and the pair of outer rollers 41,42 are attached will be described below, except that the pair of inner rollers 31,32 and the pair of outer rollers 41,42 are provided in a direction perpendicular to each other, and the other pair of additional inner rollers 31a,32a and the pair of additional outer rollers 41a,42a are provided at different mounting heights and have the same structure.
If only one pair of inner rollers 31,32 and one pair of outer rollers 41,42 are provided, a single cutting portion 61 composed of a plurality of cutting lines 62,63 arranged in parallel with each other is formed, and the processed object (R) entering the cutting portion 61 can be cut (slicing) in a plate shape.
Fig. 6 shows a cross-sectional structure taken along line a-a' in fig. 5.
Referring to fig. 6, the wire saw 20 includes: a pair of inner rollers 31,32 arranged side by side with a predetermined interval therebetween; a pair of outer rollers 41,42 arranged side by side with the pair of inner rollers 31,32 interposed therebetween; the pair of inner rollers 31,32 and the pair of outer rollers 41,42 are wound and run, a plurality of cut lines 62,63 are formed in parallel with each other, and the cut string 60 of the cut portion 61 is formed between the pair of inner rollers 31, 32.
The pair of inner rollers 31,32 are arranged side by side with a predetermined interval therebetween, and a cut-off portion 61 is formed between the pair of inner rollers 31, 32. A through hole 25 is formed vertically below the cutoff portion 61.
The pair of outer rollers 41,42 are provided on both outer sides of the pair of inner rollers 31,32, and are arranged side by side with the pair of inner rollers 31,32 interposed therebetween.
In the present embodiment, drive rollers 51,52 are provided on the lower sides of the pair of outer rollers 41,42, respectively.
The pair of outer rollers 41,42 may be provided with motors to drive the cut wire 60, but the pair of outer rollers 41,42 may be provided with driving rollers 51,52 in order to stably support the cut wire 60.
As shown in fig. 4, the driving rollers 51,52 are rotated by the motor conveyor belt 57 receiving the rotational force of the motor 56, so that the wound cut cord 60 is run.
The cut string 60 is wound around the pair of inner rollers 31,32 and the pair of outer rollers 41,42 to form a plurality of cut lines 62,63 arranged side by side with each other, and a cut portion 61 is formed between the pair of inner rollers 31, 32.
In the present embodiment additionally provided with the driving rollers 51 and 52, the cutting string 60 is wound around the driving rollers 51 and 52 on the lower side.
As shown in fig. 8, in the present embodiment, winding grooves 31c and passing grooves 31d are alternately formed in sequence along the roller axis direction on each of the inner rollers 31,32, the winding grooves 31c forming cut lines 62,63 in a ring shape along the outer circumferential surface so that the cut string 60 is wound in contact; the passage groove 31d is formed in a ring shape along the circumference of the outer circumferential surface, and provides a space through which the cut-off wire 60 passes in a non-contact state in order to wind the cut-off wire 60 around the outer rollers 41,42 and cut off the wires 62, 63.
A part of the cut wire 60 wound around the inner rollers 31,32 to form the cut lines 62,63 is disposed in the winding groove 31c and contacts the inner rollers 31,32, and a part of the cut wire 60 wound around the outer rollers 41,42 to form the cut lines 62,63 passes through the inner rollers 31,32 positioned at the inner side to reach the outer rollers 41,42, and thus passes through the passing groove 31d in a non-contact state with the inner rollers 31, 32.
The winding groove 31c and the passing groove 31d are formed, so that the cut lines 62,63 formed by winding the cut string 60 around the inner rollers 31,32 and the cut lines 62,63 formed by winding the cut string 60 around the outer rollers 41,42 through the inner rollers 31,32 in a non-contact state are formed on the same plane.
By forming the cutting portion 61 in which both the cutting lines 62,63 are located on the same plane, the plurality of cutting lines 62,63 that cut the workpiece (R) can be brought into contact with the workpiece (R) substantially at the same time to start cutting, and even if the workpiece (R) travels out of alignment with the exact center position of the cutting portion 61, the plurality of cutting lines 62,63 can be brought into contact with the workpiece (R) substantially at the same time to cut. The above-described operation does not cause problems such as variation in contact points between the plurality of cutting lines 62,63 and the workpiece (R) between the respective cutting lines 62,63, or uneven cutting force depending on the position when the cutting process is performed at the initial stage, and therefore, a stable cutting operation can be performed.
The structure in which the cut cord 60 is wound around the pair of inner rollers 31,32 and the pair of outer rollers 41,42 will be described in more detail with reference to fig. 9.
First, the cut wire 60 is wound around the winding groove of the one-side drive roller 51 and ascends, and winds around the winding groove 31c of the one-side inner roller 31 between the one-side inner roller 31 and the one-side outer roller 41 toward the other-side inner roller 32.
The cutting cord 60 passes through the passage groove 31d in a non-contact state at the other-side inner roller 32, is wound around the other-side outer roller 42, and is wound around the lower-side drive roller 52.
The cut string 60 wound around the other side drive roller 52 is again lifted up, and the winding groove 31c of the other side inner roller 32 is wound around between the other side inner roller 32 and the other side outer roller 42 to the one side inner roller 31.
The cut string 60 passes through the passage groove 31d of the one inner roller 31 in a non-contact state, winds around the one outer roller 41, and winds around the one lower driving roller 51.
Then, the one-side drive roller 51 is wound again and then lifted up, and the above-described process of winding the winding groove 31c of the one-side inner roller 31 between the one-side inner roller 31 and the one-side outer roller 41 and moving the same toward the other-side inner roller 32 is repeated, whereby the cut-off line 62 connecting the one-side inner roller 31 and the other-side outer roller 42 and the cut-off line 63 connecting the other-side inner roller 32 and the one-side outer roller 41 are repeatedly arranged side by side, and the cut-off portion 61 for cutting the work (R) is formed.
When the cut cord 60 is run as described above, as in the running direction of the cut cord 60 shown by the arrow in fig. 9 and 10, the cut lines 62,63 alternately having mutually opposite running directions form the cut portion 61, and the running directions of the plurality of cut lines 62,63 constituting the cut portion 61 are mutually opposite to the running directions of the adjacent cut lines 62, 63.
In the above-described winding method of the cut cord 60, even if there is a difference in the positions of the cut line 62 connecting the one inner roller 31 and the other outer roller 42 and the cut line 63 connecting the other inner roller 32 and the one outer roller 41, the cut lines have the same length, and therefore, the tensions of the cut lines 62 and 63 caused by the sagging of the processed object (R) when entering and cutting from the upper side can be maintained almost equally, and a uniform cut surface can be formed.
In the above-described embodiment, the cut lines 62,63 forming the cut portion 61 are formed at the position where the pair of inner rollers 31,32 and the upper end portions of the pair of outer rollers 41,42 are connected to each other, but it is also possible to form the cut lines 62,63 forming the cut portion 61 at the position where the pair of inner rollers 31,32 and the lower end portions of the pair of outer rollers 41,42 are connected to each other, as in fig. 11.
Fig. 11 is a view showing a configuration in which the pair of inner rollers 31,32, the pair of outer rollers 41,42, the pair of driving rollers 51,52, and the cut cord 60 wound around them in fig. 6 and 9 are simply turned upside down.
Accordingly, in the present invention, the cut portions 61 to be formed for cutting the work (R) are formed only on one of the upper and lower sides of the inner rollers 31,32 and the outer rollers 41,42, not on the upper and lower sides of the inner rollers 31,32 and the outer rollers 41,42, respectively, by the cut string wound around the inner rollers 31,32 and the outer rollers 41,42, and thus even a long length of the work (R) can be cut smoothly in the longitudinal direction.
That is, the cut-off portion 61 is formed by disposing a plurality of cut-off lines 62,63 on one selected from an upper side connecting upper end portions of the pair of inner rollers 31,32 and the pair of outer rollers 41,42 to each other and a lower side connecting lower end portions of the pair of inner rollers 31,32 and the pair of outer rollers 41,42 to each other.
Like the winding method of the normal wire saw 20, if the cutting wire 60 and the cutting wires 62 and 63 are disposed on both the upper and lower sides of the pair of inner rollers 31 and 32 and the pair of outer rollers 41 and 42, the work (R) cut from the upper cutting portion 61 is lowered and inevitably damaged by the lower cutting wire.
Fig. 12 shows a configuration in which the configuration of the above-described embodiment of the present invention is modified.
That is, the pair of driving rollers 51,52 is removed, and the pair of outer rollers 41,42 or the pair of inner rollers 31,32 is connected to a motor to generate a driving force.
The manner of winding the cut string 60 around the pair of inner rollers 31,32 and the pair of outer rollers 41,42 is the same as the above-described embodiment except that the pair of driving rollers 51,52 is eliminated.
Fig. 13 shows a configuration in which the cut cord 60 is wound in a manner different from that of the above-described embodiment.
In this embodiment, the cut string 60 is wound around the one-side drive roller 51 and ascends, and is wound around the winding groove 31c of the one-side inner roller 31 and toward the other-side inner roller 32 between the one-side inner roller 31 and the one-side outer roller 41.
The other-side inner roller 32 is wound around the winding groove 31c, wound in contact with the other-side inner roller 32, and wound around the lower-side drive roller 52.
The cut string 60 wound around the other side drive roller 52 is again lifted up, wound around the other side outer roller 42 from the outside, passes through the other side inner roller 32 and the one side inner roller 31, and moves toward the one side outer roller 41.
At this time, the cut string 60 passes through the respective passage grooves 31d of the other inner roller 32 and the one inner roller 31 because it is in a state of non-contact with the other inner roller 32 and the one inner roller 31.
The cut wire 60 descending after winding the one outer roller 41 from the outside is wound around the one lower side drive roller 51.
And the above-described process of winding the one-side drive roller 51 again and then ascending, winding the winding groove 31c of the one-side inner roller 31 between the one-side inner roller 31 and the one-side outer roller 41, winding the winding groove of the other-side inner roller 32 and then descending, and winding the other-side drive roller 52.
In the above configuration, the cut line 62 connecting the one inner roller 31 and the other inner roller 32 and the cut line 63 connecting the other outer roller 42 and the one outer roller 41 are repeatedly arranged in parallel to each other to form the cut portion 61 for cutting the workpiece (R).
When the cut cord 60 is wound and run as described above, it is understood that the cut lines 62,63 alternately forming mutually opposite running directions form the cut portion 61 as well as the running direction of the cut cord 60 indicated by an arrow in fig. 13, and the running direction of the plurality of cut lines 62,63 constituting the cut portion 61 is opposite to the running direction of the adjacent cut lines 62, 63.
In the configuration of the present embodiment, the length of the cut-off line 62 connecting the one-side inner roller 31 and the other-side inner roller 32 and the length of the cut-off line 63 connecting the other-side outer roller 42 and the one-side outer roller 41 are different from each other, and therefore, when the processed object (R) enters the cut-off portion 61 and is cut off, the hanging tensions of the cut-off cord 60 are different from each other, and a difference in the cut-off state of each cut-off surface can occur.
While the preferred embodiments of the present invention have been described above, the above-described embodiments are merely examples within the scope of the technical idea of the present invention, and those skilled in the art of the present invention can variously modify and implement the embodiments within the technical idea of the present invention.
Claims (7)
1. A wire saw, comprising:
a pair of inner rollers arranged side by side with a predetermined interval therebetween;
a pair of outer rollers arranged side by side with the pair of inner rollers interposed therebetween;
a thread cutting device for cutting the thread rope so as to form a cut portion between the pair of inner rollers by winding the pair of inner rollers and the pair of outer rollers and forming a plurality of cut lines arranged in parallel,
the cut-off portion is formed by arranging a plurality of cut-off lines on one side selected from an upper side connecting the pair of inner rollers and the upper ends of the pair of outer rollers to each other and a lower side connecting the pair of inner rollers and the lower ends of the pair of outer rollers to each other, and the plurality of cut-off lines include cut-off lines running in mutually opposite directions.
2. A wire saw according to claim 1,
the plurality of cutting lines constituting the cutting portion are opposite to the traveling direction of the adjacent cutting line.
3. A wire saw according to claim 1 or 2,
the pair of inner rollers are respectively and alternately formed in sequence in the roller shaft direction:
a winding groove formed in a ring shape along the circumference of the outer circumferential surface so as to wind the cut string in contact to form the cut line;
and a passage groove formed in a ring shape along a circumference of the outer circumferential surface, providing a space through which the cut cord passes in a non-contact state, so that the cut cord is wound around the outer roller to form the cut line.
4. A longitudinal sectioning device for a rod-shaped work, comprising:
a frame;
a fixing member mounted on the frame for fixing the bar-shaped workpiece;
a wire saw mounted on the frame such that a cut portion formed by cutting the wire is formed opposite to the work in a longitudinal direction of the work fixed by the fixing member;
a drive member attached to the frame so that the wire saw or the fixing member moves in a direction in which the wire saw and the workpiece approach each other, thereby causing the workpiece to enter the cut-off portion,
the wire saw includes:
a pair of inner rollers arranged side by side with a predetermined interval therebetween;
a pair of outer rollers arranged side by side with the pair of inner rollers interposed therebetween;
a thread cutting device for cutting the thread rope so as to form a cut portion between the pair of inner rollers by winding the pair of inner rollers and the pair of outer rollers and forming a plurality of cut lines arranged in parallel,
the cut-off portion is formed by arranging a plurality of cut-off lines on one side selected from an upper side connecting the pair of inner rollers and the respective upper end portions of the pair of outer rollers to each other and a lower side connecting the pair of inner rollers and the respective lower end portions of the pair of outer rollers to each other, and the plurality of cut-off lines include cut-off lines running in mutually opposite directions.
5. The longitudinal sectioning device of a rod-shaped work according to claim 4,
the plurality of cutting lines constituting the cutting portion are opposite to the traveling direction of the adjacent cutting line.
6. Longitudinal sectioning device of rod-shaped worked articles according to claim 4 or 5, characterised in that,
the pair of inner rollers are respectively and alternately formed in sequence in the roller shaft direction:
a winding groove formed in a ring shape along the circumference of the outer circumferential surface so as to wind the cut string in contact to form the cut line;
and a passage groove formed in a ring shape along a circumference of the outer circumferential surface, providing a space through which the cut cord passes in a non-contact state, so that the cut cord is wound around the outer roller to form the cut line.
7. Longitudinal sectioning device of rod-shaped worked articles according to claim 4 or 5, characterised in that,
the wire saw includes a body provided with the pair of inner rollers and the pair of outer rollers at an upper end portion,
a through hole penetrating in the longitudinal direction of the workpiece is formed in the center of the main body,
the cut portion is formed above the through hole, so that the cut portion of the workpiece enters the through hole as the workpiece enters the cut portion and is cut, and interference between the wire saw and the cut portion of the workpiece can be prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811503203.7A CN111283887A (en) | 2018-12-10 | 2018-12-10 | Longitudinal cutting device for bar-shaped processed object and wire saw mounted on same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811503203.7A CN111283887A (en) | 2018-12-10 | 2018-12-10 | Longitudinal cutting device for bar-shaped processed object and wire saw mounted on same |
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| Publication Number | Publication Date |
|---|---|
| CN111283887A true CN111283887A (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811503203.7A Pending CN111283887A (en) | 2018-12-10 | 2018-12-10 | Longitudinal cutting device for bar-shaped processed object and wire saw mounted on same |
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| Country | Link |
|---|---|
| CN (1) | CN111283887A (en) |
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