JPH0735232Y2 - Anti-twisting device - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention relates to a twist back prevention device in an SZ alternating twisting device.

(Prior Art) S-twist and Z-twist are alternately applied to a CCP cable for communication and manufactured by an alternate twisting device as shown in FIG. That is, in FIG. 4, an alternate twisting head 1 and a coarse winding device 2 are attached to a wire group C composed of a required number of wires.
Alternating twist is added via the SZ alternating twisting device consisting of
The vertical winding tape 4 is vertically added in the tape vertical addition device 3 on the alternately twisted strands, and the horizontal winding tape not shown in the figure is wound by the holding and winding device 5 to produce the tape. It

(Problems to be Solved by the Invention) In the conventional device having the above-described configuration, the tape vertical attachment device 3 is provided between the rough winding device 2 and the holding and winding device 5 for horizontally winding the tape.
Since the space between the two is inevitably lengthened to some extent, since the S winding is installed, at the time of switching from S winding to Z winding, Z winding to S
It was unavoidable that some untwisting occurred at the time of switching the winding.

Thus, conventionally, in order to solve the problem of untwisting,
In consideration of this, extra twisting was added to that extent, so there was a drawback that the wire speed in the production of twisted wire could not be increased sufficiently.

The present invention has been made based on the above circumstances, and it is provided immediately after the alternate twisting device to prevent the above-mentioned twist back, and it is not necessary to add an excessive twist in anticipation of the twist back, and an alternate twist cable at a high wire speed is provided. It is an object of the present invention to provide a twist back prevention device that can be manufactured.

[Means for Solving the Problem] (Means for Solving the Problem) The anti-twisting device of the present invention is a twisted wire formed by sequentially passing through an alternating twisting head, a coarse winding device, a tape vertical attachment device, and a press winding device. A device for preventing untwisting at the time of alternate twisting, which faces a substrate attached to the outlet of the coarse winding device and is placed on the substrate so that they can approach and separate from each other in a direction perpendicular to the pass line. Two roller support plates,
A plurality of pairs of roller brackets attached to these roller support plates, to which spring forces are applied in a direction opposite to each other in a direction perpendicular to the pass line and close to each other, and each roller bracket is centered on an axis perpendicular to the pass line. And a roller which is rotatably supported as a member. (Function) In the anti-twisting prevention device of the present invention having the above-mentioned configuration, the roller bracket is applied to the roller bracket by adjusting the distance between the roller supporting plates. Since the spring force applied is changed, the twisting wire holding pressure of the opposing rollers can be set to an appropriate size which prevents the twisting back and does not damage the strands.

(Embodiment) FIG. 1 in which the same parts as those in FIG. 4 are denoted by the same reference numerals is a conceptual diagram showing an installation state of an embodiment of the present invention, FIG. 2 is an enlarged side view of the embodiment, and FIG. The figure is a sectional view taken along the line III-III. The anti-twisting prevention device 10 of the present invention is provided at the outlet of the coarse winding device 2 as shown in FIG. The detailed structure is shown in FIGS. 2 and 3.

That is, in FIG. 2 and FIG.
The reference numeral 10 comprises a rectangular substrate 11 which is attached to the exit of the coarse winding device 2 in parallel and horizontally to the pass line, and side walls 11a perpendicular to the plate surface are provided on the side edges of the substrate 11 which are parallel to the pass line. Has been. In addition, a right-hand thread portion is engraved in one half and a left-hand thread portion is provided in the other half at the center of each side wall 11a, and the right-hand thread portion and the left-hand thread portion have an L-shaped cross section disposed between the both side walls. The ends of tightening screws 13 screwed into the two roller support plates 12 are rotatably supported. Further, each side wall 11a is provided with a guide rod 14 located on both sides of the tightening screw 13 and penetrating each roller support plate 12. A handle 13a is attached to one end of the tightening screw 13. With the above configuration, tightening screw 13
By rotating, the distance between the two roller support plates 12 can be arbitrarily adjusted and set.

As shown in FIG. 2, a plurality of spring cylinders 15 (five in the figure) are attached to each roller support plate 12 with the axis perpendicular to the plate surface. A support shaft 17a of a U-shaped roller bracket 17 that rotatably supports is rotatably and non-rotatably engaged. In the figure, reference numeral 18 denotes a guide pin that is planted in the spring cylinder 15 and that cooperates with the key groove 18a of the support shaft 17a to restrain its rotation. Also, the support shaft 17
The axis a of the roller 16 supported by the roller bracket 17 is orthogonal to a.

A spring 19 in the spring cylinder 15 applies a spring force in a direction in which the roller bracket 17 is separated from the opening of the spring cylinder 15 to each support shaft 17a.

In the anti-twisting prevention device of the present invention having the above-mentioned configuration, the twisted wire immediately after coming out of the rough winding device 2 is sandwiched between the opposing rollers. This clamping pressure is appropriately set by rotating the tightening screw 13 to move the roller support plates 12 closer to or apart from each other to change the spring force of the spring 19. That is, if the clamping pressure is too small, the twisting occurs, and if it is too large, the strands are damaged.Therefore, the tightening screw 13 is rotated to adjust the interval between the roller support plates 12 to adjust the spring 19. The spring pressure is set to a required value so that the roller 16 clamps the stranded wire at a pressure that does not cause the untwisting and does not damage the strand.

As described above, by mounting the anti-twisting device of the present invention immediately after the coarse winding device 2, even if the alternating twisting device and the holding and winding device are separated from each other, untwisting occurs at the time of switching of the alternating twisting device. There is no.

[Effect of the Invention] According to the anti-twisting prevention device of the present invention, when the twisted wire formed by passing through the alternate twisting head, the coarse winding device, the tape vertical attachment device, and the press winding device in order is alternately twisted, It is possible to prevent twisting back at the time of switching of alternate twisting without causing damage to the wire, and it is not necessary to add extra twisting in anticipation of twisting back, and the wire speed of the twisting operation can be increased.

[Brief description of drawings]

FIG. 1 is a conceptual view showing an installation state of an embodiment of the present invention, FIG. 2 is an enlarged side view of the embodiment, and FIG. 3 is its III-III.
FIG. 4 is a sectional view taken along the line, and is a conceptual diagram of a conventional alternate twisting device. 11 ... Substrate, 11a ... Side wall, 12 ... Roller support plate, 13 ...
… Tightening screw, 14 …… Guide rod, 15 …… Spring cylinder, 16 …… Roller, 17 …… Roller bracket, 17a …… Spindle, 18 ……
Guide pin, 18a ... Keyway, 19 ... Spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isamu Tanno 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa, Showa Electric Wire & Cable Co., Ltd. (56) Reference JP-A-61-99217 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A device for preventing untwisting of a twisted wire formed by passing through an alternating twisting head, a coarse winding device, a tape longitudinally-applying device, and a holding and winding device in that order during the alternate twisting. A substrate attached to the outlet of the substrate, two opposing roller support plates installed on the substrate so as to be able to approach and separate from each other in a direction perpendicular to the pass line, A plurality of pairs of roller brackets to which a spring force is applied in a direction facing each other in a direction perpendicular to the pass line and close to each other, and a roller rotatably supported by each roller bracket about an axis perpendicular to the pass line. An anti-twisting prevention device having: