JP2566370Y2 - Wire-saw wire-wrap belt - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt for winding a wire around a roller of a wire saw.

[0002]

2. Description of the Related Art Conventionally, a wire saw is used for thinly cutting a semiconductor or the like by reciprocating movement of a wire. This cutting wire is usually wound around grooves of a plurality of rollers, and is gradually fed out while repeating a reciprocating movement.

[0003] In the wire saw, when the wire is replaced or the wire is broken during the cutting operation, it is necessary to wind the wire around the roller. In the initial stage of this winding, at least several manual winding operations were required, which required considerable skill and required a long operation time.

To solve such a problem, for example,
By using the wire-wrapping belt proposed in Japanese Utility Model Application Laid-Open No. 2-90050, the winding operation can be performed very easily.

In this method, a belt body having a spiral ridge is wound around a plurality of rollers of a wire saw in an endless manner by a connecting tool, and the wire is fixed to a wire fixing tool fixed to the belt body. By rotating the roller in the feed direction while fixing one end, the wire is sequentially wound spirally in the groove of the roller by a screw feed action on the belt body. Therefore, a high level of skill is not required for the winding work of the wire, and the wire is wound on the roller.
Can be wound easily within a short time.

[0006]

In this type of belt, as shown in FIG. 6, a wire fixing device b attached to a belt a is used to prevent interference with a roller c.
It is located slightly outside the outer diameter of la c. That is, the wire d is pulled by the fixture b moving on a path outside the actual winding path, and is sequentially wound between the rollers c.

At this time, a wire d to be wound
There is a slight difference between the length of the wire d and the length of the wire d that the fixture b must pull. The difference ΔL greatly changes depending on whether the position of the fixture b is between the rollers c and c, that is, when the fixture is linearly moving, and when the fixture b is turning around the roller c.

[0008] That is, the wire-fixed point b by the fixture b
When 1 is in the straight portion, the difference between the distance L1 'between the final junction c1 of the wire d with the groove of the roller c and the fixed point b1 and the length L1 of the wire-wound path therebetween. ΔL is very small, but when entering the turning part,
Since it is joined to the groove of the roller c, the distance L2 'between the final joint point c2 and the fixed point b2 is abrupt to the length L2 of the arc-shaped winding path along the groove of the roller c. To be longer,
Here, the difference ΔL sharply increases.

This change is shown, for example, in the graph of FIG. Moreover, at the turning position, the final joint point c
Since the wire-pull length from 2 is shorter than the pull length in the straight section, the effect on the wire tension is extremely large. As described above, since the tension of the wire d periodically changes greatly during one rotation of the belt a, a phenomenon in which the wire d is repeatedly loosened and stretched occurs.

Normally, a non-stretchable metal wire such as a piano wire is used for this kind of wire d. When an excessive tension is applied, friction occurs between the roller c and the wire d to generate heat. Or the wire d may be broken. If the wire d is loosely wound in the initial adjustment in order to prevent this, the engagement state of the roller c with the groove becomes unstable and the wire d comes off the groove during the winding. Occurs.

Therefore, in order to smoothly and reliably wind the wire, it is necessary to always draw in the wire with an appropriate constant tension.

Accordingly, an object of the present invention is to incorporate a tension adjusting mechanism into a wire-holding member of a belt so that winding can be performed while maintaining a constant wire tension.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a belt-like body having a spiral ridge in the longitudinal direction at the same pitch as the groove of the wire-wound roller. A wire-holding member for guiding and holding the wrapped end of the wire-fixed member, and the wire-holding member supports a slide body slidably slidable in the belt longitudinal direction and elastically held in the moving direction via an elastic member, A structure in which a wire fixing member for fixing one end of the wire to the slide body is provided, and a smooth and reliable winding of the wire can be performed while absorbing a change in the tension of the wire by the movement of the slide body and always maintaining a constant tension. Like that.

Further, the present invention supports the wire locking member so as to be rotatable only in one direction with respect to the slide body, thereby facilitating the work of attaching the wire to the belt.

[0015]

When winding the wire, the operator first winds the belt body around the starting end of the roller, and connects the both ends with the connecting member while fitting the ridge into the groove of the roller. After making the belt body endless,
The winding start end of the wire is passed through the wire guide hole of the holding member, and the end is further fixed to the wire fixing member on the slide body. In this operation, the bending of the wire that has protruded from the groove position of the roller is taken up and absorbed by the rotation of the wire fixing member, and stopped at a predetermined tension.

In this state, if the operator rotates the roller in the feed direction of the wire, or rotates the roller on the driving side in the same direction by the driving source, the belt becomes spiral. The screw feed action of the ridge and groove of
In accordance with the rotation of the roller, it sequentially moves from the end on the winding start side to the end on the winding end.

In this moving process, the wire is sequentially wound around the groove of the roller, and finally reaches the end on the winding end side, and the wire is spirally wound around all the grooves. Become. When the end of the winding is completed, the belt naturally comes off the roller, or before the belt comes off, the tip of the wire is released from the wire locking member, and the belt is wound on the winding side reel. Complete the work.

At the time of winding, the slide body is balanced at a predetermined position by the elastic member at a predetermined tension of the wire, but when the tension changes, the elastic member flexes and moves in the longitudinal direction of the belt. Accordingly, since the position of the wire locking portion moves in the feed direction, the tension of the wire is constantly maintained while pulling or returning the wire.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described below with reference to FIGS.

The wire wrapping belt 1 includes a belt body 2 that can be wrapped around a plurality of, for example, three rollers R, a connecting member 3 for connecting the belt body 2 endlessly, and a wire W wrapping. A wire-holding member 4 for holding the end portion, a slide body 5 slidably provided on the holding member 4 in the belt longitudinal direction, and a winding end of a wire-W provided on the slide body 5 It comprises a wire-fixing member 6 for fixing, a regulating member 7 provided on the holding member 4, and an elastic member 8 for urging and holding the slide body 5.

The belt body 2 is formed in a belt shape with a material having an appropriate elasticity, for example, polyester or the like, and a ridge 10 which can be spirally formed at the same pitch as the groove 9 of the roller R on the back surface thereof. Have. The ridge 10 is formed obliquely at a position shifted by one pitch at the end with respect to the longitudinal direction of the belt body 2.

The connecting member 3 is detachably connected to both ends of the belt main body 2 and is attached to both ends of the belt main body 2 to make it endless. In the present embodiment, a magic tape is used as the connecting member 3 and is attached and fixed in a state of being embedded in the overlapping portion of the end of the belt body.

The holding member 4 has a substrate portion 11 having an L-shaped cross section and having a surface abutting on the surface of the belt body 2 and one end surface thereof, and a guide projection integrally formed on the upper surface of the substrate portion 11. A wire-retaining ring 13 buried at a position outside the belt width at the surface 12 and at one side of the substrate portion 11 to form a wire-guide hole 13a; It is composed of a pair of upright brackets 14.

The holding member 4 applies the right-angled portion of the substrate portion 11 to one end of the belt
The bolt 16 is inserted from the upper surface of the substrate portion 11 into the nut 15 embedded and fixed in the upper surface portion of the base member 11 and tightened, whereby the nut 15 is fixed to the belt main body 2 in a detented state. At this time, the position of the wire guide hole 13a extends outward from the width of the belt main body 2, and the interval between the end of the belt main body 2 and the ridge 10 is 1 to an integral multiple of the roller groove pitch.

The holding member 4 is provided on the bottom surface of the slide body 5.
A slide groove 17 having a dovetail-shaped cross-sectional shape is slidably fitted to the guide projection surface 12 on the upper surface, and the belt is provided within a gap formed between the holding member 4 and the bracket 14. It is slidably supported in the longitudinal direction.

A through hole 18 is formed in the side surface of the slide body 5 in the belt width direction, and a shaft 20 constituting the wire-fixing member 6 is rotatably supported through a pair of bearings 19 in the through hole 18. Further, a one-way clutch 21 is connected to the shaft 20, so that only rotation in one direction is permitted and rotation in the opposite direction is locked. A wire fixing portion 22 is formed at one end of the shaft 20, that is, at a side where the wire guide hole 13a is located.

The wire fixing portion 22 is formed by attaching a washer 23 and a knob nut 24 to a screw formed at one end of the shaft 20, and tightening the nut 24 to connect the wire with the washer 23. −W is fastened and fixed. A wire-through hole 20a is formed in the threaded portion of the shaft 20 in the radial direction, and the wire-W is fastened and fixed between the washer 23 and the nut 24 so as to substantially correspond to this position. U-groove 2 which can wind wire-W around the axis between 23 and nut 24
5 are formed.

The elastic members 8 are interposed between both end faces of the slide body 5 and the brackets 14, respectively. In this embodiment, a leaf spring is used as the elastic member 8, and the slide body 5 is always kept in a fixed position by the elastic force of the two elastic members 8.

A screw hole 14a is formed in each of the brackets 14, and a screw shaft as the restricting member 7 is attached to the screw hole 14a so as to be adjustable toward the end face of the slide body 5. The elastic member 8 is loosely fitted and supported on the screw shaft, and restricts the movement limit of both ends of the slide body 5 at the tip end position of each screw shaft.

With this configuration, when fixing the wrapped end of the wire W to the fixing member 6, the wire W is pulled to pass through the wire guide hole 13a of the holding member 4 from below, and the tip is fixed to the fixing member 6. 6, the nut 20 is tightened with the shaft 20 fixed while the shaft 20 is fixed, and the wire W is fastened and fixed between the washer 23 and the nut 24. Next, the shaft 20 is freed, and the nut 20 is gripped and the shaft 20 is turned, so that the wire W is wound around the U groove 25, and the wire R is passed through the wire guide hole 13a from the roller R to fix the wire fixing portion 22. And absorbs the bending of the wire-W until the tension is adjusted to a predetermined value.

Then, the belt 1 is spirally fed by being guided by the groove 9 of the roller R by the rotation of the roller R. The wire W is wound around the groove of the roller R at the same speed as the belt 1 with the tip fixed to the wire fixing member 6 of the belt 1. At this winding stage, even if the belt 1 is rotated at a constant speed, the position of the wire-holding member 4 is changed by a change in the relative position with the roller R in one rotation. Since the retraction length changes, the tension of the wire-W changes. By detecting this change delicately, the two elastic members 8 expand and contract, and the slide body 5 is moved and adjusted, so that the wire-W retraction length is adjusted,
Therefore, winding is performed while being adjusted so as to always maintain a constant tension.

In this manner, the wire W is sequentially wound around the groove 9 of the roller R as the belt 1 moves,
Eventually, it reaches the end on the winding end side, and the wire-W is spirally wound around all the grooves 9.

The present invention is not limited to the above-described embodiment. For example, the belt connecting member may be constituted by a hook type or a belt fitting, and a utility model registration request may be made by using a coil spring as an elastic member. The configuration of each unit may be arbitrarily changed and embodied within the range described above.

[0034]

According to the present invention, according to the present invention, a wire is wound around a wire.
Attach a wire-holding member that holds the winding end of the wire to a belt body having a spiral ridge in the longitudinal direction at the same pitch as the groove of the wire, and slide in the belt longitudinal direction with respect to the holding member. A slide body is freely provided, a wire-fixing member is provided on the slide body, a movement range of the slide body is regulated by a regulating member, and a variation in wire tension between the holding member and both end faces of the slide body. When the wire is wound around, the operator first winds the belt body around the winding start side end of the roller, and connects the both ends while fitting the ridge into the groove. After the belt main body is endless by being connected by a member, the winding start end of the wire is passed through the wire holding member, and the end is further fixed to the wire fixing member on the slide body.

In this state, when the operator rotates the roller in the wire feeding direction, or rotates the driving roller in the same direction by the driving source, the wire wrapping belt is spirally wound. In accordance with the rotation of the roller, the wire is sequentially moved from the end on the winding start side to the end on the winding end in accordance with the rotation of the roller, and the wire is spirally wound in all the grooves. Will be hung. As described above, the work at the beginning of the rolling of the roller can be performed very easily without skill, and the working time is greatly reduced.

In the process of winding the wire, the slide body is balanced at a predetermined position by the elastic member under a predetermined tension of the wire. However, if the tension changes, the elastic member is bent. Move in the belt longitudinal direction. Accordingly, since the position of the wire fixing portion moves, the tension of the wire is constantly maintained while pulling and returning the wire. Therefore, smooth and reliable winding can be performed.

Further, the wire-fixing member is rotatably supported in one direction by, for example, a one-way clutch or the like on the slide body, so that the initial bending of the wire at the time of fixing the wire can be easily absorbed. Therefore, workability can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a wire-wrap belt of the present invention.

FIG. 2 is a perspective view showing a state in which a wire is wound around a roller.

FIG. 3 is a plan view of a main part in FIG. 1;

FIG. 4 is a sectional view taken along the line AA in FIG. 3;

FIG. 5 is a side view as viewed from a direction B in FIG. 3;

FIG. 6 is a schematic diagram for explaining wire-tension fluctuation at the time of wire-wrapping in a conventional belt system.

FIG. 7 is a diagram showing a difference Δ between a distance L ′ from a wire-joining point of a wire to a position of a wire-fixing tool during rotation of a belt and a length L of a wire-winding path therebetween during belt rotation in a belt system
6 is a graph showing a change in L.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire-wrapping belt 2 Belt main body 3 Belt connection member 4 Wire-holding member 5 Slide body 6 Wire-fixing member 7 Restriction member 8 Elastic member 9 Groove 10 Ridge R Roller W Wire

Claims (2)

(57) [Scope of request for utility model registration] 1. A belt body having a longitudinally extending ridge that can be spirally formed at the same pitch as a groove of a wire-wound roller, a belt connecting member that detachably connects both ends of the belt body, A wire-holding member fixed to the belt main body and having a wire-guide hole formed at a position protruding in the width direction of the belt main body; a slide body slidably supported on the holding member in the belt longitudinal direction; A wire fixing member provided on the body for fixing a tip of the wire inserted into the wire guide hole; a regulating member provided on the wire holding member for restricting a moving range of the slide body; An elastic member interposed between the member and the slide body for urging and holding the slide body at a predetermined position in the movement direction. . 2. The wire-wrapping belt according to claim 1, wherein the wire fixing member is rotatably supported on the slide body in only one direction.