JPH0451922B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for winding a plurality of filaments around a cable while alternately twisting them in reverse, and more specifically, a device for winding a cable with a shield wire or armored metal wire alternately. The present invention relates to a cable support structure in a winding device for an alternately reverse twisted wire body that is wound while performing reverse twisting.

[Prior art] For the purpose of electrical shielding, shielding wires such as copper wires, copper alloy wires, aluminum alloys, etc. are twisted alternately and inverted on the circumferential surface of the external semiconductive layer of the cable core.
Wires are twisted, Z-twisted, or wrapped in S-twist or Z-twist while alternately twisting armored metal wires such as iron wire or steel wire on the circumferential surface of the cable sheath for the purpose of mechanical protection. Conventionally, a body wrapping device having a structure shown in FIG. 3 has been used.

That is, this conventional winding device has a cable passage hole 3a in the center, and a hollow inverted eye plate 3 that has a plurality of filament guide holes 3b concentrically formed therein.
A fixed support base 5 rotatably supports the reversing batten 3 via a bearing 4 such as a bearing, and a drive source 6 for reversing the batten for alternately reversing the reversing batten 3 in forward and reverse directions. It consists of its main parts.

The above-mentioned reversing eye plate 3 includes a rotation support portion 3c made of a short cylindrical body with a relatively thick wall, a cable holding portion 3d integrally extending from the rotation support portion 3c in a cone shape toward the cable traveling direction, and an opposite side of the holding portion 3d. It is formed with a ratchet wheel 3e provided in the shape of a flange on the circumferential surface of a short cylindrical body, and the linear body guide hole 3b is parallel to the cable passage hole 3a in the thick rotation support part 3c. A plurality of holes are drilled at equal intervals on the same circumference. Further, the opening at the tip of the cable holding portion 3d allows the cable 2 drawn inside to be connected to the reversing eye plate 3.
A cable holding die 3f is formed to hold the filament (hereinafter referred to as shield wire) 1 on the central axis of the cable 2 and to bring the filament (hereinafter referred to as shield wire) 1 into close contact with the surface of the cable 2.

The rotation support part 3c of the reversing eye plate 3 formed in this way is rotatably attached to the fixed support base 5 by a bearing 4, and the output shaft of the drive source 6 is connected to the ratchet wheel 3e via a chain 7. has been done. The drive source 6 is composed of a reversible motor or the like, and a ratchet wheel 6a fixed to its output shaft and the ratchet wheel 3e are connected by a chain 7. This connecting means may be connected by a V belt, a timing belt, etc.
In this case, the ratchet wheels 3e and 6a are formed of pulleys or gears.

In the winding device configured in this way, the cable 2 is inserted into the cable passing hole 3 of the inverted batten 3.
When the shield wire 1 is guided through the wire guide hole 3b and moves in the direction of the arrow while being guided by the cable holding die 3f, the shield wire 1, which is guided through the wire guide hole 3b, is rotated in the normal or reverse direction of the batten 3 to form a cable. wrapped around the surface of 2. That is, since the batten 3 is alternately rotated forward and backward by the reversal drive source 6, a plurality of shield wires 1 are wound around the surface of the cable 2 in an S-twist and a Z-twist.

[Problems to be Solved by the Invention] However, in this conventional winding device, the cable 2 drops from the center axis of the reversing batten 3 due to its own weight, and as a result, as shown in FIG. There is no gap between the lower surface of the cable 2 and the inner surface of the cable holding die 3f, and the winding state of the shield wire 1 is disturbed. In particular, when switching between S twist and Z twist, even though the batten 3 has been reversed, the shield wire 1 is caught between the holding die 3f and the cable 2, and the shield wire 1 remains in the same position. As a result,
There was a drawback that the distance between the shield wires in the SZ inversion section was disturbed, making it impossible to obtain uniform shielding. Further, if the winding interval of the shield wire is irregular, when the cable is bent, the shield wire will be kinked, which will significantly impair the shielding effect. This drawback also occurs in armored metal wire.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned drawbacks of the conventional device, and to provide an alternately inverted twisted filament in which the winding interval of the filament is not disturbed by the cable holding die at the tip of the inverted batten. To provide a body wrapping device.

[Means and effects for solving the problem] In the present invention, the radial movement of the cable is restricted and the cable is guided in the traveling direction within the hollow part of the reversing batten, and the center of the cable is placed in the hollow part of the reversing batten. A cable guide member for aligning the center of the passage hole is arranged independently of the rotation of the reversing eye plate, and the weight of the cable applied to this cable guide member is transmitted to the reversing eye plate through the bearing member, and the reversing eye plate is rotated. The dead weight of the cable transmitted to the batten is received by a fixed support stand that is installed on the ground and rotatably supports the inverted batten.

[Example] The present invention will be described below with reference to an illustrated example.

As shown in FIG. 1, in the winding device of the present invention, a cable guide member 8 is independently provided in the hollow portion of the reversing batten 3, regardless of the rotation of the reversing batten 3. And this cable guide member 8
Other configurations except for the above, namely, a reversing batten 3, a drive source 6 for reversing the reversing batten 3 alternately in forward and reverse directions,
The construction of the fixed support base 5, etc., which rotatably holds the reversing eye plate 3 by means of a bearing 4, is constructed exactly the same as the conventional one shown in FIG. 3. Therefore, the same reference numerals are given to the same constituent members as those of the conventional one, and the explanation of their structure and operation will be omitted.

In this embodiment, the cable guide member 8 includes a pair of short rollers 8a that suppress the left and right movement of the cable 2 in the cable passage hole 3a of the reversing eye plate 3;
8a and a pair of short rollers 8b, 8b that suppress vertical movement.
It consists of two sets of rollers. These two roller pairs are rotatably supported by fixed holding plates 9a and 9b, respectively. These holding plates 9a and 9b are attached to a stand 12 installed on the ground with screws 1 at one end.
1 and 11, and is fixed to the tip of a holder 10 consisting of a guide pipe arranged laterally. This holder 10 is designed to allow the cable 2 for feeding the cable 2 into the batten 3 to be inserted therein, and the other end thereof extends into the cable passage hole 3a of the batten 3. The base ends of the fixed holding plates 9a and 9b are fixed to the outer peripheral surface of the other end of the holder 10 at vertically symmetrical positions by soldering or the like, and extend parallel to the traveling direction of the cable 2. A pair of short rollers 8b, 8b for suppressing the vertical movement of the cable 2 are horizontally supported at the tip thereof so as to be freely rotatable. A pair of short rollers 8a, 8a for suppressing the left and right movement of the cable 2 are rotatably supported vertically in the middle of the left and right ends of the extension (as seen from the direction of travel of the cable). ing. Therefore, the short rollers 8a and 8b
are arranged at right angles to each other, so that the cable 2 is sandwiched in a grid pattern within the cable passage hole 3a.

Further, the outer circumferences of the proximal ends of the fixed holding plates 9a and 9b are connected to the reversing eye plate 3 via a rotary bearing member 13 such as a bearing. Therefore, the reversing eye plate 3 is rotatably supported by the immovable fixed support base 5 and the holder 10 on its inner and outer surfaces through the rotary bearing members 4 and 13. Further, the stand 12 is also provided with a filament guide hole 12a which is opposite to the filament guide hole 3b formed in the inverted eye plate 3, and the shield wire 1 is inserted through the hole 12a. Afterwards, it is inserted into the filament guide hole 3b of the batten 3.

Further, the cable holding die 3f formed at the tip of the inverted eye plate 3 has an inner diameter of approximately D+2d+3 mm, where D is the outer diameter of the cable 2 and d is the diameter of the shield wire 1.

In this embodiment configured in this way, a cable guide member 8 is disposed at the center of the cable passage hole 3a of the reversible eye plate 3, and two sets of rollers 8a, 8
a, 8b, and 8b support the outer periphery of the cable 2 in a grid pattern without gaps, so that the weight of the cable 2 is received by the fixed support base 5 via the bearing 13, the reversible batten plate 3, and the bearing 4. Therefore, the cable 2 moves in the direction of the arrow while being supported by its own weight by the cable guide member 8, and when the batten 3 is moved forward and backward by the reversal drive source 6, the shield wire 1 is twisted in S and Z on the surface of the cable 2. Wrapped into a strand. At this time, the cable 2 is connected to the cable guide member 8
It is always held at the center position of the batten 3. As mentioned above, the inner diameter of the cable holding die 3f at the tip of the batten 3 is about 3 mm larger than the outer diameter of the cable with the shield wire 1 wound around it, so the shield wire 1 is held by the die 3f. It does not come loose and the winding state of the shield wire is not disturbed. Since the weight of the cable 2 is supported by the cable guide member 8, the die 3
The gap between the inner diameter of f and the cable 2 is uniform over the entire circumference as shown in FIG. Therefore, the distance between the shield wires at the SZ inversion section is also uniform over the entire circumference of the cable.

In the above-mentioned embodiment, the cable guide member 8 is constituted by a roller guide in which two sets of short rollers are arranged in a grid pattern, but it goes without saying that it may be constituted by a die, a caterpillar, etc.

Further, as shown in FIG. 1, the cable guide member 8 is provided with another cable guide member 8A downstream of the cable holding die 3f.
It is more effective if the cable 2 is supported before and after the holding die 3f by both cable guide members 8 and 8A.

Further, in the above embodiment, the present invention is applied to a winding device, that is, a winding device that winds shield wire or armored metal wire around a cable while alternately twisting it in reverse. However, the cable support structure in the present invention is Needless to say, this method can also be applied to cases where wire cores are twisted alternately in reverse.

[Effects of the Invention] As described above, according to the present invention, (1) a filament such as a shield wire can be evenly wound around the cable surface.

(2) The cable can be wrapped so that the electrical shielding and mechanical protection are uniform throughout the cable.

(3) Even when the cable is bent, the striatum does not protrude;
No kink occurs.

(4) No indentations from dies will be left on the cable surface.

(5) In conjunction with (1) and (4) above, the winding speed of the filament can be increased.

It is possible to provide a winding device for alternately inverted twisted filaments, which achieves various effects such as, and completely eliminates the drawbacks of conventional devices of this type.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a winding device for an alternately reverse twisted wire body showing an embodiment of the present invention, and FIG. 2 shows the relationship between the cable holding die and the cable in the winding device shown in FIG. FIG. 3 is a cross-sectional view of a conventional winding device for alternately reverse twisted wire bodies, and FIG. 4 is a cross-sectional view showing the relationship between the cable holding die and the cable in the winding device shown in FIG. It is a diagram. DESCRIPTION OF SYMBOLS 1...Striatal body (shield wire), 2...Cable, 3...Reverse batten, 3a...Cable passage hole, 3b...Striatal body guide hole, 4...Rotation bearing, 5
... Fixed support stand, 8 ... Cable guide member, 1
3...Bearing member.

Claims (1)

[Scope of Claims] 1. A hollow reversal plate having a cable passage hole in the center and a plurality of filament guide holes concentrically drilled therein is alternately reversed in forward and reverse directions to allow the cable to pass through. In a winding device for alternately reversing twisted wire bodies that winds a wire body guided by the guide hole around a cable that has been passed through the hole, a rotation and a rotation of the reversing eye plate is provided in a hollow portion of the reversing eye plate. is a cable guide that is arranged independently and unrelated to the cable guide to restrict the radial movement of the cable, guide the cable in the traveling direction, and align the center of the cable with the center of the cable passage hole in the reversing batten. a bearing member attached to the outer periphery of the cable guide member for transmitting the weight of the cable applied to the cable guide member to the reversing eye plate; and a bearing member attached to the outer periphery of the reversing eye plate and attached to a fixed support base. A winding device comprising: a rotating bearing that rotatably supports a reversing eye plate;