JPH0945162A - Sz wire shield device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an SZ wire shield device having little disturbance of the interval between shield wires and allowing good SZ twist winding at the time of inversion in the S-direction and the Z-direction when multiple shield wires are wound on a cable in an SZ twist. SOLUTION: This SZ wire shield device is provided with a fixed panel strip 11 guiding multiple shield wires S onto a cable C and an inverting panel strip 12 giving inverting motion to the shield wires S from the fixed panel strip 11. The outer periphery of the shield wires S wound into the grooves of the cable C by the inverting panel strip 12 in an SZ twist is press-wound by a tape 13, and the shield wires S are wound on the cable C in the SZ twist. The inverting panel strip 12 is provided on the fixed panel strip 11 side than the nearly center portion between the fixed panel strip 11 and the portion where the shield wires S are brought into contact with the cable C, and a cone section 14 shrunk in diameter gradually in the delivering direction of the shield wires S from the inverting panel strip 12 is removably provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a good SZ, in which a plurality of shielded wires are wound around a cable by SZ twisting, and even when the shielded wires are reversed in the S and Z directions, the line spacing of the shielded wires is small. The present invention relates to an SZ wire shield device that can be twisted and wound.

[0002]

2. Description of the Related Art Conventionally, when winding a shield wire around a cable, the SZ wire shield method has been used in which the rotating direction is switched and inverted between the S (right) direction and the Z (left) direction. A shield wire is wound inside the groove of the cable. When performing the SZ twist, as shown in FIGS. 2 (A) and 2 (B), the cable C penetrates through the central portion, and a plurality of annular shielded wires S are provided on the outer peripheral portion.
A fixed eye plate 1 having a guide hole for guiding a cable C, and a guide hole for guiding a plurality of shielded wires S in an annular shape on the outer peripheral portion of which a cable C penetrates through the central portion similarly to the fixed eye plate 1. The shield device is composed of a reversing eye plate 2 having 2a and supported so as to be capable of reciprocating rotary motion.

A plurality of shields are formed around the outer periphery of the cable C which is fed at a predetermined speed through the fixed eye plate 1 and the reversal eye plate 2 by reversing the reversing eye plate 2 at a predetermined cycle. The wire S is wound with an SZ twist.

Further, the shield wire wound by the SZ twist is fixed to the outer circumference of the cable by a press-winding tape T supplied from a taping head (not shown) which rotates around the cable C at a constant speed. It

In the above apparatus, when guiding a plurality of shielded wires, a sheet basket 3 is provided between the fixed eye plate 1 and the inverted eye plate 2 in the vicinity of the inverted eye plate 2. Therefore, the plurality of shield lines S are prevented from overlapping.

[0006]

By the way, in recent years, the number of shield wires wound around SZ twisted wires has increased, and in order to improve the quality of the shape, the holes 2a formed in the reversing plate 2 are used. Since it is also close to the core, the hole 2a formed in the reversing eye plate 2 as shown in FIG.
The distance between the holes and the holes 2b tends to become narrower. As a result, there is a problem in that the shielded wires passing through the holes of the eye plate generate static electricity due to friction, and the passing shielded wires S overlap with each other or ride on a mountain. For this reason, conventionally, it is necessary to use a ceramic eye plate having less friction and good slipperiness, and as a result of using the special eye plate, there is a problem that the manufacturing cost of the SZ twist shield apparatus increases.

Further, when the number of shielded wires (mild steel etc.) further increases, the shielded wires are often overlapped with each other, and it is often impossible to manufacture the SZ twisted shielded wire itself.

In view of the above circumstances, the present invention provides S and Z when winding a large number of shield wires around a cable with SZ twist.
It is an object of the present invention to provide an SZ twist shield device capable of producing an SZ wire shield having a good shape with little disturbance in the line spacing of the shield wire even when it is reversed in the direction.

[0009]

The structure of the SZ wire shield device according to the present invention which achieves the above-mentioned object is a fixed eye plate for guiding a plurality of shield wires to each groove on the cable.
A reversing eye plate that gives a reversing motion to the shielded wire from the fixed eye plate, and an outer periphery of the shield wire wound in the groove of the cable with SZ twist by the reversing eye plate is wrapped with a tape to shield the cable. In an SZ wire shield device in which a wire is wound with an SZ twist, the reversal eye plate is provided between the fixed eye plate and a portion where the shield wire abuts and gathers in each groove of the cable, and It is characterized in that a cone portion whose diameter is gradually reduced from the eye plate in the shield wire drawing direction is detachably provided. In the SZ wire shield device, the cone portion is a nipple-shaped conical cylinder.

In the above SZ wire shield device,
It is characterized in that a material having a low friction coefficient is applied to a contact surface of the cone portion with the shield wire, or the cone portion is made of a material having a low friction coefficient.

In the above SZ wire shield device,
It is characterized in that the reversal eye plate is provided closer to the fixed eye plate than an intermediate portion between the fixed eye plate and a portion where the shield wire contacts the groove of the cable.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. According to the present invention having the above-described configuration, as shown in FIG. 1, the shield device of the present invention includes a fixed eye plate 11 for guiding a plurality of shield wires S to each groove on the cable C, and a fixed eye plate 11 from the fixed eye plate 11. Shielded wire S
Reversing eye plate 12 for giving reversing motion to the
With the SZ twist, the outer periphery of the shielded wire S wound in the groove of the cable C is pressed by the tape 13 and the shielded wire S is wound around the cable C with the SZ twist S.
In the Z wire shield apparatus, the reversing eye plate 12 is provided on the side of the fixed eye plate 11 which is closer to the fixed eye plate 11 than an intermediate portion between the fixed eye plate 11 and the portion where the shield wire S is in contact with the cable C, and the reversing eye plate 12 is shielded. The cone portion 14 whose diameter gradually decreases in the wire drawing direction is provided.

The cone portion 14 has a taper portion 14a whose diameter gradually decreases in the drawing direction of the shield wire S.
It has a nipple-shaped conical shape having a. The tapered portion 14a, which is the contact surface of the cone portion 14 with the shield wire, is provided with a holding portion 14b that detachably holds the base end portion of the super portion 14a in the axial direction.

The holding portion 14b has a collar portion 14c.
Are provided along the edge thereof, and the collar portion 14c is provided with holes at equal intervals for passing the shield wire S passing through the eye plate.

The tapered portion, which is the contact surface of the cone portion 14 with the shield wire S, may be coated with a material having a low friction coefficient such as silicone resin or Teflon resin.

The cone portion may be made of a material having a low friction coefficient such as the silicone resin.

As a result, even if the shielded wire S comes into contact with the tapered portion 14a of the cone portion, there is no catching, and even if the number of shielded wires is large, the overlapping of the shielded wires is eliminated, and the shielded wire S is eliminated. Can be well aligned inside the groove of the cable C. Further, the reversing eye plate 12 of the present invention.
Is located on the outer peripheral side of the eye plate and is fixed on the fixed eye plate side 1
.., the gap between the plurality of holes 12a for aligning the shield lines S provided on the reversing eye plate 12 becomes large, and as a result, even if the number of shield lines increases, the shield lines are The overlapping or the like is eliminated, and the plurality of shielded wires S can be favorably aligned in the cable. As a result, by preparing the taper portion having a different size as compared with the conventional one, the adjustment at the time of changing the twist size becomes easy.

According to the present invention, in the conventional case, only about 40 shielded wires could be satisfactorily aligned in the cable, but even about 80 times as many shielded wires can be easily and easily arranged. It is possible to carry out SZ wire shield twisting without disorder and having a good shape.

[0019]

As described above, according to the present invention, when the shield wire is wound around the cable by the SZ twist, the S
Even when it is reversed in the Z direction and the Z direction, the SZ wire shield having a good shape with little disturbance in the line spacing of the shield lines can be implemented. Further, in the reversing eye plate, compared with the conventional, the hole of the eye plate is located on the outer side, and since it is located on the fixed eye plate side, the interval between the shield wire aligning holes provided in the eye plate becomes large, As a result, even if the number of shielded wires is large, the overlapping of the shielded wires is eliminated, and a plurality of shielded wires can be favorably aligned in the cable.

Further, since the reversing eye plate is detachably attached to the cone portion, it is possible to respond swiftly to the size change and the pitch change, and the production efficiency is improved.

[Brief description of drawings]

FIG. 1 is a schematic view of a shield device according to the present invention.

FIG. 2 is a schematic view of a shield device according to a conventional example.

[Explanation of symbols]

 11 Fixed eye plate 12 Inverted eye plate 13 Tape 14 Cone part C cable S Shield wire

Claims (4)

[Claims] 1. A fixed eye plate for guiding a plurality of shield wires to respective grooves on a cable, a reversing eye plate for imparting a reversing motion to the shield wire from the fixed eye plate, and an SZ by the reversing eye plate.
In an SZ wire shield device in which the outer circumference of a shielded wire wound in the groove of the cable by twisting is pressed with a tape and the shielded wire is wound around the cable with an SZ twist, a shielded wire is provided in each groove of the cable. The reversing eye plate is provided between the contacting and gathering portion and the fixed eye plate, and a cone portion whose diameter gradually decreases from the reversing eye plate in the shield wire drawing direction is detachably provided. An SZ wire shield device characterized in that 2. The SZ wire shield device according to claim 1, wherein the cone portion is a nipple-shaped conical cylinder. 3. The SZ wire shield device according to claim 1, wherein a material having a low friction coefficient is applied to a contact surface of the cone portion with the shield wire, or a material having a low friction coefficient in the cone portion. An SZ wire shield device characterized by comprising: 4. The SZ wire shield device according to any one of claims 1 to 3, wherein the reversing eye plate is closer to the fixed eye plate than an intermediate portion between the fixed eye plate and a portion where the shield wire contacts the groove of the cable. An SZ wire shield device characterized by being provided.