JPH09282957A - Chuck device for wire processing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly insert an electric wire CA into a mark tube MA so as to install the mark tube MA in the wire CA. SOLUTION: A guide 40 for electric wire CA has guide pieces 42, 42,... for dividing the periphery of a core A of reference ring 10 into three in the circumferential direction for operating and closing. The guide 40 guides a core CA1 of the wire CA through a guide passage 40a formed by the guide pieces 42 42..., and thereafter, the guide pieces 42, 42... are opened corresponding to a coating CA2, and the wire Ca can be thereby securely inserted into a mark tube Ma held by a holding unit 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire processing chuck device for inserting a cylindrical mark tube for displaying a wiring symbol or the like into an end of a covered electric wire and performing an electric wire end processing operation.

[0002]

2. Description of the Related Art In order to perform a terminal treatment work on a covered electric wire,
A chuck device for processing electric wires is known (Japanese Patent Laid-Open No. 7-
78528).

This device is constructed by mounting chucks for electric wires and chucks for mark tubes on both end faces of a rotatable reference ring. The mark tube chuck can hold the mark tube on the axis of the reference ring, and forms a trumpet-shaped guide path that opens and expands toward the wire chuck. On the other hand, the chuck for wire is
The core wire can be twisted by gripping the tip of the wire on the axis of the reference ring, removing the coating on the tip, and rotating the entire wire. Therefore, the wire is stripped of its tip, released from the grip by the wire chuck, and then moved forward along the axis of the reference ring, so that the tip of the wire is attached to the mark tube held by the mark tube chuck. The part can be inserted and the mark tube can be attached.

[0004]

According to such a prior art, the chuck for mark tube guides the coating of the electric wire through the trumpet-shaped guide path when advancing the electric wire. Since it is not guided, the core wire easily disengages from the axis of the mark tube, and it is difficult for the core wire and the end of the mark tube to interfere with each other so that the core wire does not enter the mark tube correctly. There is a problem in that the crimp terminal may not be properly attached due to the occurrence of a crack.

Therefore, in view of the problems of the prior art, an object of the present invention is to provide a guide for an electric wire with an openable / closable guide piece so that troubles in a series of terminal processing operations can be eliminated. To provide a chuck device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the structure of the present invention comprises a rotatable reference ring, a wire guide attached to both end surfaces of the reference ring, and a mark tube for opening and closing independently of each other. The chuck for the mark tube holds the mark tube on the axis of the reference ring, and the guide for the wire divides the circumference of the axis of the reference ring into three parts in the circumferential direction. The gist is to guide the electric wire on the axis of the reference ring through the guide piece that opens and closes.

The guide pieces have arcuate portions formed on their respective inner surfaces, and the arcuate portions can form guideways through which only the core wires of the electric wires are inserted when the guide pieces are in close contact with each other and closed.

Further, each of the guide pieces may be formed with a taper portion which is continuous with the circular arc portion and expands outward, and is attached to three arms which are combined in a triangular shape. The arms are provided with a reference ring and a reference ring. Both ends of each may be swingably connected to a differential ring mounted on the ring so as to be rotatable relative to each other.

Further, each arm can be formed with a notch on the inner side surface corresponding to a guide piece attached to another adjacent arm.

The differential ring may be attached to the reference ring via a bearing.

[0011]

According to the structure of the invention, the chuck for mark tube holds the mark tube on the axis of the reference ring, and the guide for electric wire is provided on the axis of the reference ring via the guide piece. Can guide you. Therefore,
By advancing the electric wire toward the mark tube held by the mark tube chuck and entering the mark tube, the mark tube can be reliably attached. By appropriately opening and closing the guide piece that is divided into three parts in the circumferential direction, the core wire and the coating of the electric wire are accurately guided to the axis of the reference ring, respectively, and the guide tube on the axis is This is because interference can be eliminated. Since the guide piece can be opened and closed arbitrarily, it is possible to always accurately guide both the core wire and the coating of the electric wire regardless of the size of the electric wire.

When the arcuate portion of the guide piece forms a guide path, the guide path should allow only the core wire of the electric wire to pass through when the electric wire is advanced, and surely guide the tip end of the core wire into the mark tube. You can

When forming the taper portion on the guide piece, the taper portion forms a trumpet-shaped guide path for guiding the electric wire, and when the electric wire is advanced, the electric wire can be more surely guided to a predetermined position. .

If the guide pieces are attached to the three arms, the guide pieces rotate the differential ring relative to the reference ring,
By swinging the three arms at once, they can be opened and closed at once.

When forming a notch in each arm, a guide piece attached to another adjacent arm enters into the notch, and the guide pieces stick to each other even if they are attached parallel to each arm. You can close it. At this time, even if the guide pieces are opened so as to be separated from each other, their respective directions do not extremely shift from the axial direction. However, the parallel state of the guide pieces here means that the hypotenuses on both sides of each guide piece are equiangular with the longitudinal direction of the arm.

If the differential ring is mounted via the bearing, the differential ring smoothly rotates relative to the reference ring, and the guide for the electric wire can be stably operated for a long period of time.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

The electric wire machining chuck device mainly comprises a reference ring 10, a guide 40 for the electric wire CA mounted on both end surfaces of the reference ring 10, and a chuck 50 for the mark tube MA (FIG. 1, FIG. 1). 2). The guide ring 40 and the differential rings 20 and 30 for opening and closing the chuck 50 are attached to both ends of the reference ring 10.

The reference ring 10 is a pair of base rings 1.
Flange ring 13 and bearing 14 on the outer circumference of 1 and 12
And the pulley 15 with teeth is attached to the outer circumference of the flange ring 13. Base ring 1
A ring-shaped rib 11a is formed on the outer periphery of No. 1, and a tapered through hole 11b is formed in the center.
However, the through hole 11b linearly expands toward the guide 40, and a short straight pipe portion is formed on the chuck 50 side. An annular rib 12a is formed on the outer periphery of the base ring 12, and a tapered through hole 12b that is continuous with the through hole 11b of the base ring 11 is formed at the center. However, a substantially triangular recess 12b1 is formed on the end surface of the base ring 12 on the chuck 50 side.

For the base rings 11 and 12, the flange ring 13 for mounting the pulley 15 and the bearing 14 are fitted into the base ring 11 in this order, and the base ring 12 is overlapped.
For the screw holes 11c, 11c ... on the base ring 11 side,
The reference ring 10 is integrally assembled by screwing the bolts 12d, 12d ... through the holes 12c, 12c. At this time, the thick inner diameter portion of the flange ring 13 and the inner race of the bearing 14 are sandwiched between the ribs 11a and 12a such that they cannot rotate relative to each other.

The differential rings 20 and 30 are formed by mounting toothed pulleys 22 and 32 on the outer circumferences of annular flange rings 21 and 31, respectively, and rotate relative to both ends of the reference ring 10 via bearings 23 and 33. It is installed freely. The flange rings 21 and 31 are retainers 2 formed in the inner diameter direction.
It is retained by the reference ring 10 via the bearings 1 and 31a and bearings 23 and 33. That is, the bearing 2
3 and 33 are adapted to the outer diameter of the base rings 11 and 12,
The inner races are fitted to the outer circumferences of the base rings 11 and 12 so as to come into contact with the ribs 11a and 12a.

The guide 40 for the electric wire CA is composed of three arms 41, 41 ... And guide pieces 42, 42 ... Attached to the inside of each arm 41. The arms 41, 41 ... Are combined in a triangle with the axis A of the reference ring 10 as the center.

Each arm 41 has a through hole 41a formed at one end and an elongated hole 41b formed at the other end (FIGS. 2 and 3). By offsetting the side of the long hole 41b outward from the center of each arm 41, the rear surface side of the long hole 41b can accommodate the through hole 41a side of another arm 41, and the through hole 4b can be stored.
The surface side on the side of 1a is cut off in a step-like manner by a thickness corresponding to the thickness on the side of the long hole 41b. An arc portion 41c is formed at the center of the inner surface of each arm 41.
A V-shaped notch 41d is formed adjacent to the circular arc portion 41c on the side of the through hole 41a of c.

Each guide piece 42 is formed in a divided cylindrical shape with a flange 42a that divides the circumferential direction into three. On the inner surface of each guide piece 42, a small-diameter arc portion 42b and an arc portion 4
2b1 which is continuous with 2b and expands outwards
And are formed in the axial direction. Each guide piece 42 is attached to the inside of the arc portion 41c of the corresponding arm 41 via bolts 41e and 41e. However, the bolt 41
e and 41e are fixed in parallel to the arm 41 by screwing into the screw holes 42a1 and 42a1 formed in the flange 42a of the guide piece 42 through the counterbored holes 41f and 41f formed in the central portion of the arm 41. can do. At this time, one oblique side of the guide piece 42 substantially corresponds to one side of the cutout 41d of the arm 41.

Each arm 41 is attached to the end of the base ring 11 so that the side of the through hole 41a is sunk in the through hole 11b of the base ring 11 (FIGS. 1 and 2). It should be noted that the base ring 11 is provided on the side of the through hole 41 a of each arm 41.
The nut member 11d embedded in the axial direction of the through hole 41
It is swingably connected to the reference ring 10 by screwing a bolt 41g1 through a. Also, the long hole 4
1b side is a screw hole 21b formed in the flange ring 21.
On the other hand, by screwing the bolt 41g2 through the long hole 41b, it is swingably connected to the differential ring 20. Therefore, the arms 41, 41 ... Are combined so as to form an equilateral triangle about the axis A of the reference ring 10.

Each nut member 11d is a base ring 11
Through a counterbore 11e formed in the axial direction of the countersunk screw 11
By screwing f into the through hole 1 of the base ring 11.
It is fixed so as to be partially buried in the tapered inner surface of 1b. However, a pocket for accommodating the nut member 11d is formed on the inner surface of the through hole 11b so as to correspond to the counterbore hole 11e. Also, bolts 41g1 and 41g2
Is a shoulder bolt adapted to the through hole 41a and the elongated hole 41b, and the neck portion of the bolts 41g1 and 41g2 is formed to be slightly longer than the wall thickness of the arm 41 on the through hole 41a side and the elongated hole 41b side.

The arms 41, 41 ... Rotate the differential ring 20 relative to the reference ring 10 in the direction of arrow B1 in FIG.
2, 42 ... can be separated from each other and the guide 40 can be opened. Further, the arms 41, 41 ...
Are relatively rotated in the direction of arrow B2 in the same figure (B), so that the guide pieces 42, 42 ...
The guide 40 can be closed. At this time, the guide piece 4
2, 42 ... are notches 41d of other adjacent arms 41.
Part of each of them enters into close contact with each other to form a small-diameter guide path 40a inside through the arcuate parts 42b, 42b ... Of the inner surface (FIG. 1), and the tapered parts 42b1, 42b.
Guide path 40 that expands outward in a trumpet shape via b1 ...
b can be formed. The guide path 40a is formed on the axis A, and has a diameter that allows only the core wire CA1 of the electric wire CA to pass through but not the covering CA2.

The chuck 50 for the mark tube MA is
Similar to the guide 40 for the electric wire CA, the three arms 5 that are combined in a triangle centering on the axis A of the reference ring 10
1 and 51, and holding pieces 52 and 5 attached to each arm 51
2 and the like (FIGS. 1 and 2).

Similar to the arm 41, each arm 51 has a through hole 51a and a long hole 51b formed at both ends thereof.
The front surface side on the a side is cut off, and the back surface side on the long hole 51b side is cut off. Further, a small-diameter circular arc portion 51c and a V-shaped notch 51d are formed adjacent to each other at the center of the inner side surface of each arm 51 (FIG. 5 (A)). Each holding piece 52
Is formed into a divided cylindrical shape that divides the circumferential direction into three parts, and an arc portion 52a that matches the arc 51c of the arm 51 is formed on the inner surface (FIG. 2). Each holding piece 52 has a bolt 51.
The circular arc portion 52a is attached in parallel to the arm 51 at the central portion on the back surface side of each arm 51 via e and 51e so as to correspond to the circular arc portion 52c. At this time, one oblique side of the holding piece 52 substantially corresponds to one side of the cutout 51d of the arm 51 (FIG. 5 (A)).

Like each of the arms 41, 41, ..., Each arm 51 has the reference ring 1 on the side of the through hole 51a via the pin 51f.
No. 0 base ring 12 is swingably connected (FIGS. 1 and 2), and the long hole 51b side is swingably connected to the flange ring 31 of the differential ring 30 via a bolt 51g. The pin 51f is commonly inserted into the through hole 51a and the hole 12e formed in the base ring 12 to form the retaining ring 51a.
It is locked through 1 Also, the bolt 51g is
A shoulder bolt similar to the bolt 41g2, which is a screw hole 3 formed in the flange ring 31 through the elongated hole 51b.
It is screwed into 1b.

Therefore, the arms 51, 51, ... Align the differential ring 30 with respect to the reference ring 10 by the arrow C1 in FIG. 5 (A).
The relative rotation in the directions allows the holding pieces 52, 52 ... To be separated around the axis A, and the chuck 50 to be opened. Further, the arms 51, 51 ...
By relatively rotating 0 in the direction of arrow C2 in FIG. 3B, the holding pieces 52, 52, ... Can be closely packed around the axis A and the chuck 50 can be closed. At this time, the holding pieces 52, 52 ...
A cylindrical holding portion 50a can be formed inside via a, 52a, ... (FIG. 1). However, the holding portion 50a
Is formed on the axis A, and its inner diameter and length are adapted to the mark tube MA.

A chuck device for processing such an electric wire is
The whole is rotatably supported via a bracket B1 and a bearing 14, and the reference ring 10 and the differential rings 20 and 30 are rotatably driven by independent drive motors M1, M2 and M3, respectively. The electric wire CA can be supplied and the mark tube MA can be supplied to the differential ring 30 side for use. An electric wire supply device and a mark tube supply device (not shown) are installed on both sides of the chuck device, and the electric wire CA and the mark tube MA are supplied on the axis A.

The reference ring 10 is supported by a bracket B1 standing on a base B2 via a bearing 14. On the other hand, the reference ring 10 has a drive motor M
The timing belt M1b is wound around the pulley M1a and the pulley 15 at the shaft end of 1 to be connected to the drive motor M1. Similarly, the differential rings 20 and 30 are driven by the drive motor M via timing belts M2b and M3b wound around the pulleys M2a and 22, pulleys M3a and 32, respectively.
2, connected to M3. The drive motors M1, M
2, M3 reference ring 10, differential ring 20, 30
The rotation direction of is unified, for example, in the direction of arrow K in FIGS. 1, 4, and 5.

Therefore, assuming that the rotational speeds n1, n2 and n3 of the reference ring 10 and the differential rings 20 and 30 are n1 and n1, respectively.
= N2 = n3, the reference ring 10 and the differential ring 2
By rotating 0 and 30 in synchronization, the guide 40 for the electric wire CA and the chuck 50 for the mark tube MA can maintain their respective opening degrees even if they rotate together with the reference ring 10. Further, the guide 40 has n2> n
The chuck 50 can be opened by setting 1 and can be closed by setting n2 <n1. The chuck 50 can be opened by setting n3> n1 and can be closed by setting n3 <n1. That is, the guide 40 and the chuck 50 can be opened and closed independently of each other.

When the electric wire CA is terminated, the whole wire is rotated at a rotation speed of n1 = n2 = n3, first the guide 40 is closed and the chuck 50 is opened, and the mark tube along the axis A. The MA is inserted into the chuck 50, the chuck 50 is closed, and the mark tube MA is held in the holding portion 50a (FIG. 6A). Then, the tip end of the coating CA2 is removed, and the electric wire CA in which the tip end of the core wire CA1 is exposed is inserted from the guide 40 side.
A is guided on the axis A through the guide paths 40b and 40a, and the tip of the core wire CA1 can be inserted into the mark tube MA through the guide path 40a (two-dot chain line in the same figure (A)). .

After that, the guide 40 is covered with the coating CA of the electric wire CA.
Open according to the outer diameter of 2 (solid line in the figure (B)), and wire C
When A is further advanced, the coating CA2 is accurately positioned on the axis A by the guide path 40a and guided, so that the coating CA2 and the mark tube MA do not interfere with each other and the core wire CA1 , The coating CA2 penetrates the guide passage 40a and can penetrate the mark tube MA through the guide passage 40a (two-dot chain line in the figure). Therefore, the electric wire CA uses the core wire CA1 as the chuck 50.
Side of the mark tube MA
Can be attached.

After that, the electric wire CA is attached with a crimping terminal of a predetermined size to the core wire CA1 protruding to the chuck 50 side, and the electric wire CA is pulled out to the guide 40 side to crimp a part of the mark tube MA on the chuck 50 side. The terminal 40 is covered, the guide 40 and the chuck 50 are fully opened, and the electric wire CA is completely extracted to the guide 40 side to complete the terminal treatment. However, in order to move the mark tube MA to the crimp terminal side by pulling out the electric wire CA to the guide 40 side and cover the mark tube MA on the base of the crimp terminal, the holding pieces 52, 52 ... Of the chuck 50 have respective arcs. A stopper that can be engaged with the end surface of the mark tube MA may be formed at one end of the portion 52a on the guide 40 side.

In the above description, the rotation directions of the reference ring 10 and the differential rings 20, 30 may be opposite to the direction of arrow K in FIGS. 1, 4 and 5. However, the guide 40 and the chuck 50 at this time are respectively n2 <n1,
Open by setting n3 <n1 and n2> n1 and n3
It can be closed by setting> n1.

When the electric wire CA is passed through the mark tube MA, the mark tube MA preferably rotates integrally with the holding pieces 52, 52, ... By the rotation of the chuck 50. Mark tube M for electric wire CA
This is because the electric wire CA can smoothly enter the mark tube MA by rotating A. Therefore, each holding piece 52 has an arc portion 5 forming the holding portion 50a.
2a may be provided with a suitable slip stopper for fixing the mark tube MA.

When the guide 40 guides the core wire CA1 of the electric wire CA via the guide path 40a, the guide piece 42,
It is not always necessary to close 42 in close contact with each other.
That is, the arc portions 42b, 42b of the guide pieces 42, 42 ...
... corresponds to the core wire CA1 of a specific size,
By closing the guide pieces 42, 42 ... to an intermediate opening, it can be applied to another large-sized core wire CA1 without any trouble.

[0041]

As described above, according to the present invention, the electric wire is placed on the axis of the reference ring via the mark tube chuck for holding the mark tube on the axis of the reference ring and the guide piece. By providing the guide for the electric wire to be guided, the electric wire guide can accurately guide the core wire of the electric wire into the mark tube held on the axis, so that the core wire may be bent or separated. There is no fear of this, and there is an excellent effect that troubles in a series of terminal processing operations can be eliminated.

[Brief description of drawings]

FIG. 1 is a sectional view showing the overall structure

FIG. 2 is an exploded perspective view of the entire configuration.

FIG. 3 is an enlarged exploded perspective view of essential parts.

4 is a left side view of FIG.

5 is a right side view of FIG. 1.

FIG. 6 is an operation explanatory diagram

[Explanation of Codes] A ... Shaft center CA ... Electric wire MA ... Mark tube 10 ... Reference ring 20 ... Differential ring 23 ... Bearing 40 ... Guide 50 ... Chuck 40a ... Guide path 41 ... Arm 41d ... Notch 42 ... Guide piece 42b … Arc part 42b1… Tapered part

Claims (6)

[Claims] 1. A mark for chucking, comprising a rotatable reference ring, electric wire guides attached to both end faces of the reference ring and opened and closed independently of each other, and a chuck for mark tube. , A mark tube is held on the axis of the reference ring, and the guide for the electric wire is provided with a guide piece for opening and closing the reference ring via a guide piece that is circumferentially divided into three parts to open and close. A chuck device for electric wire processing, which guides the electric wire along the axis. 2. The guide pieces have arcuate portions formed on their inner surfaces, and the arcuate portions form a guide path through which only the core wire of the electric wire is inserted when the guide pieces are in close contact with each other. The chuck device for electric wire processing according to claim 1. 3. The chuck device for electric wire processing according to claim 2, wherein each of the guide pieces has a taper portion which is continuous with the circular arc portion and expands outward. 4. The guide pieces are combined in a triangular shape 3
Attached to a book arm, the arm including the reference ring,
The chuck for electric wire processing according to any one of claims 1 to 3, wherein both ends of the differential ring, which is attached to the reference ring so as to be rotatable relative to each other, are swingably connected to each other. apparatus. 5. The chuck device for electric wire processing according to claim 4, wherein each of the arms has a notch formed on an inner surface thereof corresponding to the guide piece attached to another adjacent arm. 6. The chuck device for wire processing according to claim 4, wherein the differential ring is attached to the reference ring via a bearing.