JPH01177959A - Wire rewinding device - Google Patents

Abstract

PURPOSE:To remove a coil from a holding bar group easily by installing the base ends of the holding bars swayable with pins to a boss to which a fixing flange is installed, contacting and holding the tips of the holding bars at the periphery of a bridge piece to which a movable flange is installed, and removing the bridge piece to make the tips of the holding bars movable to the center axis side. CONSTITUTION:A fitting piece 26 is fixed to the tip of the installing part 23 with a screw 28, and the tips (free ends) of plural bars 30 which compose a wire rewinding bobbin 4 are abuttedly held by the tapered surface 34 of the fitting piece 26. In such a condition, the tip of a wire W is wound to the wire rewinding bobbin 4, which is rotated by a driving motor 21, and a wire C1 on a winding bobbin 2 is wound to the wire rewinding bobbin 4 to form a coil C2. After such a winding is completed, the fitting piece 26 is removed from the installing part 23 together with a movable flange 27. As a result, the free ends of the holding bars 30 can be made movable to the installing part 23 side with pins 31 of a boss 24 installed with a fixing flange 25 as the supporting point, a clearance is made between the inside hole Ca and the coil C2, and the coil C2 can be removed from the holding bars.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is applied to, for example, a wire-type cutting device in which a wire wound into a coil is inserted into a wire-breaking device that facilitates taking out the wire from a bobbin.

[Conventional technology]

2. Description of the Related Art Conventionally, a wire-type cutting device has been used as a method for simultaneously cutting a large number of single crystals of high hardness and brittle materials such as silicon into wafer shapes. This cutting device is designed to cut the single crystal by pouring a cutting fluid into the wire and running the wire (for example, Japanese Patent Publication No. 12954/1983). In this cutting device, the wire is a consumable item, and when it reaches a predetermined number of uses, it must be removed from the winding bobbin and replaced with a new wire. In this case, the wire is long, so it is preferable to take out the coiled wire wound around the bobbin.

[Problem that the invention seeks to solve]

However, the wire is tightly wound around the bobbin, and even if one or both flanges of the bobbin can be removed, it is difficult to take out the wire in its coiled state. For this reason, it is conceivable to make the winding core of the bobbin tapered, but even with this structure, there are problems such as requiring a lot of effort to take out the winding.

[Means for solving problems]

In view of the above, an object of the present invention is to provide a wire unraveling device that can easily take out a used wire in the form of a coil. Equipped with a support mechanism for the wire bobbin,
The wire winding revolving bobbin support mechanism includes a support shaft that rotatably supports the bobbin, and the wire-reeling bobbin support mechanism includes a mounting portion that fits into the wire-reeling bobbin at the tip of the drive shaft connected to the drive motor. The wire bobbin has a boss that is fitted into and supported by the mounting part and has one flange attached to it, a piece that is detachably attached to the tip of the mounting part and has the other flange, and a length that spans both flanges. It consists of a plurality of support bars arranged on the outer periphery of the mounting part, and the support bar is pivotably supported on the boss side so as to be able to swing in the radial direction, and its tip is supported in contact with the outer periphery of the piece. The purpose is to wind the wire onto the support bar of the wire-breaking bobbin and to allow the tip of the support bar to move toward the center axis by removing the piece.

[For production]

By removing the piece from the drive shaft, the support bar supporting the coil can be moved in the axial direction, creating a gap with the inner diameter of the coil, making it easy to take out the coil.

〔Example〕

The drawings show an embodiment of the present invention, in which FIG. 1 is a plan view of the entire line-breaking device, and FIGS. 2 to 9 are views showing details of the structure. This wire unraveling device l includes a wire winding bobbin support mechanism 3 that removably supports a winding bobbin 2 around which a used wire W is wound, and a wire winding bobbin support mechanism 5 that supports a wire unraveling bobbin 4. is equipped with a pair of support shafts 6 and 7 that sandwich the winding bobbin 2, one support shaft 6 is rotatably supported by a bearing 9 attached to a fixed base 8, and the other support shaft 7 is slidable. It is rotatably supported by a bearing 11 attached to a moving table 10.

Both support shafts 6.7 fit into and support both ends of the center hole 12 of the winding bobbin 2. The slide table 10 is slidably supported on a support table 13 in parallel with the support shaft axis, and connects a transition bolt 14, which is screwed into a fixed block 15 attached to the base. The rotation moves the support shaft 7 forward and backward through the tenth slide.

16 is a rotation detector, and a dog 17 attached to the support shaft 7
and a proximity switch installed opposite to this, which detects when the rotation of the winding bobbin 2 decreases when the wire is cut or the winding is completed during wire winding, which will be described later, and issues a signal. This is how it was done.

The wire bobbin support mechanism 5 includes a drive shaft 20 that supports the wire bobbin 4, and a drive motor 21 connected to one end of the drive shaft.The drive shaft 20 is rotatably supported by a bearing 22, and the tip is provided with a mounting portion 23 that fits into the wire-breaking bobbin 4. Note that it is preferable to use a torque motor that rotates with a constant torque as the drive motor 21.

The wire bobbin 4 is located at the base end of the mounting portion 23 (bearing 22 side)
The boss 24 that is fitted into the boss 24, the fixed flange 25 that is attached to this boss, the piece 26 that is removably attached to the tip of the attachment part with a screw, and the movable flange 27 attached, and the length that spans both flanges 25 and 27. and a plurality of support bars 30 arranged around the outer periphery of the mounting portion.

The support bar 30 is swingably attached to the boss 24 by a pin 31, and includes an arc-shaped rim 32 around which the wire W is wound, and an arm 33 protruding from the center lower part of the rim. The piece 26 has a tapered surface 34, and the tip of the arm 33 forms a tapered engagement part 35 that fits this, and when the piece 26 is attached to the mounting part 23, the support bar 30 is supported by the tapered surface 34. do.

The boss 24 is fitted into a key 40 provided on the mounting portion 23, and the piece 26 is also slidably fitted into the key 41. Thereby, the wire-breaking bobbin 4 is rotated by the drive shaft 20 without being twisted. Note that the pin 31 that pivotally supports the support bar 30 is attached to the fixed flange 25 so as to be positioned outward from at least its inner surface (the wire-wound side).

In the figure, reference numerals 36 and 37 indicate through holes of the support bar 30 bored in the fixed flange 25 and the #S moving flange 27, respectively.

In the above configuration, the winding bobbin 2, which is formed by winding a used wire into a coil CI, is connected to the support shafts 6, 7 of the support mechanism 3.
The support shaft 7 on the movable side is moved forward by the operation of the transition pole 14, and the tips of both support shafts 6.7 are fitted and held on both sides of the bobbin center hole 12.

On the other hand, the disconnected wire bobbin 4 is attached to the mounting portion 2 by screws 28.
3, and the tip of the support bar 30 is supported by the tapered surface 34.

In this state, the tip of the wire W is wound around the wire bobbin 4, and the drive motor 21 applies a constant torque to the wire wire bobbin 4.
is rotated to wind the wire CI on the winding bobbin 2 onto the wire-breaking bobbin 4 to form a coil C2.

After winding is completed, the piece 26 is removed from the mounting part 23 together with the movable flange 27. As a result, the free end of the support bar 30 can be moved to the mounting part 23 side using the bin 31 as a fulcrum, and is connected to the inner hole Ca of the coil C2. A gap is created between them, so that the coil can be easily removed.

In this embodiment, the winding bobbin is supported on both ends, and the line bobbin is supported on cantilever support, but either method may be used and may be selected depending on the M amount and size of the bobbin.

As an application of the present invention, it can also be used as a wire winding bobbin when the wire winding in a wire cutting device is a method in which the wire is discarded without being reused.

〔Effect of the invention〕

According to the present invention, the wire-breaking bobbin is composed of a plurality of support bars in place of the conventional core shaft around which the wire is wound, and the support bars are supported by pins on the bosses on which the flanges are attached on one side, and the other side is supported on the bosses on which the flanges are attached. The diameter of the free end of the support bar can be reduced by removing the piece together with the flange after winding the wire to form a coil. This has the effect that it can be easily removed.

[Brief explanation of the drawing]

The figures relate to an embodiment of the present invention, in which FIG. 1 is an overall plan view, FIG. 2 is a front view of the winding bobbin support mechanism, and FIG. 3 is a sectional view taken along line I-1 in FIG. 1. Figure 4 is a sectional view taken along the line ■-■ in Figure 1, Figure 5 is a front view of the support bar, Figure 6 is a sectional view taken along the line ■-■ in Figure 5, and Figure 7 is the piece. 8 is a left side view of the wire, FIG. 9(a) is a vertical sectional view showing the wire wound around the wire bobbin, and FIG. 9(b) is the state with the piece removed. FIG. 1 is a wire unraveling device, 2 is a wire winding ribbin, 3 is a winding bobbin support mechanism, 4 is a wire unraveling bobbin, 5 is a support mechanism, 6, 7
20 is a support shaft, 20 is a drive shaft, 21 is a drive motor, 23 is a mounting portion, 24 is a boss, 25.27 is a flange, 26 is a piece, 30 is a support bar, and W is a wire. Patent applicant: Sumitomo Metal Industries, Ltd. Figure 4 Figure 7 Figure 8

Claims (1)

[Claims] The wire-winding bobbin support mechanism includes a support mechanism for a wire winding bobbin and a support mechanism for a wire-breaking bobbin, the wire-winding bobbin support mechanism includes a support shaft that rotatably supports the bobbin, and the wire-breaking bobbin support mechanism is connected to a drive motor. The disassembly bobbin is fitted into and supported by the attachment part, and the boss to which one flange is attached is removably attached to the distal end of the attachment part, and It consists of a piece with the other flange and a plurality of support bars having a length spanning both flanges and arranged on the outer periphery of the attachment part, and the support bar is pivotably supported on the boss side so as to be swingable in the radial direction. , the tip is supported in contact with the outer periphery of the piece, allowing the wire from the winding bobbin to be wound onto the support bar of the unraveling bobbin, and the tip of the support bar to be moved toward the center axis by removing the piece. A wire breaking device characterized by: