JPS58225508A - Method of folding travel strip and device therefor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and an apparatus for imparting a twist using a filament, particularly a method and an apparatus for imparting a twist to strands to be twisted during the course of their travel when manufacturing stranded metal wires. R) This is related to this.

In general, when it comes to stranded wires made by twisting together multiple metal wires, except for thin wires with a wire diameter of about 1 Own or less, it is common for the strands to come apart or sag. There is. That is, to explain the case of simple winding and rotation type twisting as shown in FIG. The winding bobbin 4 is rotated in a direction opposite to the twisting direction of the winding bobbin 4, so that the stranded wire to be wound on the return bobbin 4 is twisted twice as required for the wire.

When manufacturing stranded metal wires, it is necessary to rotate the strands around the strands in the opposite direction to the direction of rotation of the strands, which increases centrifugal force. There were drawbacks such as the inability to perform high-speed feed-out operation, and to make this possible, the stranding machine itself had to be manufactured with a high-strength design, which significantly increased equipment costs.

Another well-known method of providing loops using strands is a method of twisting twisted pairs of communication cables. To explain this with reference to FIG. 2, two strands t are sent out from stationary delivery bobbins 5 and
A wire storage/rotation device 8 is provided in the middle of the traveling path of each wire, and while winding the two wires gathered together in the twisting die 9 onto a winding bobbin 10, the wires are rotated around the wires. In the method for manufacturing stranded wire, the wire storage/rotation device 7.8 is rotated around the running strand, and the rotation speed is determined by the time required for the strand to pass through the wire storage/rotation device 1.8. A known method is to give a return from each elementary break by changing the period in two steps (rotation change method) or by changing the linear velocity V of the wire in two steps with the same period (linear speed change method). However, this twisting is not a fixed twist in one direction, but a twist that changes direction alternately in both directions, so it is used as a pre-process when manufacturing gold stranded wire such as steel stranded wire, for example. This method cannot be used as a return method from strands of wire.

This invention can easily give more return to the strands during metal strand manufacturing, without using the inefficient method shown in FIG. 1 in which the delivery bobbin itself is rotated around the delivery strands A method and apparatus thereof are provided.

First, the principle of the method of this invention will be explained with reference to FIG.

For example, a device consisting of a pair of rollers that pinches the wire t shown in FIG. To prevent twisting and rotation, use the same stopping point. If we now rotate the blocking point P in the direction shown in the figure around the wire υ passing through this point P, a Z twist will be applied to the wire 4 upstream of the blocking point P. , after passing through the same blocking point P, are given by the same number of S, so these two cancel out each other and only more than S remains in the wire υ.

Next, as shown in FIG. 8(b), two screw blocking points P, . Suppose, however, that these two dog-blocking points P, , P are integrally connected by a suitable frame 11, and that this frame 11 is rotated, for example, in the direction shown. At this time, as before, the strand w4 is given a twist at the upstream side of the first screw blocking point P1 on the upstream side, and the wire 71F remains in that twisted state until it reaches the second screw blocking point P1. After passing through the second thread blocking point P2, the same number of 8's in the opposite direction is given to this strand W, and as a result of the cancellation, the torsion of the strand W becomes zero.

Therefore, as shown in FIG.
If it is possible to eliminate the twist in the Z direction given upstream of the first twist prevention point P, then the second
After passing through the twist prevention point P2, the second
Nervous rotation prevention point P! This is the principle of the clear method.

An embodiment of an apparatus according to the present invention, that is, an example of an apparatus for carrying out the above-mentioned principle method is shown in FIG.

In the figure, at both ends inside the hollow frame 13,
For example, the first twisting prevention device 14 consists of a pair of rollers.
and a second twist prevention device 20 are respectively provided, and the strand V is introduced into the frame 13 from the outside, first passes through the first twist prevention device +114, and immediately before being led out from the frame 13 to the outside, it passes through the second twist prevention device +114. It passes through the blocking device 20.

A pair of winding sheaves 15A, 15B are provided in the running section inside the frame from the first twisting prevention device 14 to the second twisting prevention device 20, and these two sheaves 15A, 1
The strand υ is freely runnable across the 5B. Here, if you want to make the running section of the strand V between the first and second twist prevention devices 14 and 20 longer,
The sheaves 15A and 15B on each side may be arranged in parallel to form a large number of sheave groups, and the strands V may be turned over a large number of turns across these sheave groups. This makes it possible to lengthen the traveling section length of the wire W.

The pair of windings are arranged along the travel path of the wire υ between the sheave devices 15A and 15B, and in the illustrated example, there are four sets of windings.
1f! 16, 17, 18 and 19 are provided. This is configured so that the tension wire is pinched from both sides by a plurality of rollers lined up in the longitudinal direction of the strands, and the direction of the pinching is made to differ angularly for each twisted curl remover. be. For example, the illustrated torsion curl removal device 16 and the same 17 differ in the pinching direction of the rollers by 90 degrees. Note that the reference numeral 21 is a gear for rotating the frame 1311m about the axis of the wire V.

,
1.By using a common expression, the strands are squeezed in various diametrical directions by the clamping force of the roller groups in various different clamping directions, and the wire is squeezed in various diametrical directions. The torsion curl (torsional elastic deformation) that occurs in the strand ν in the upstream part of the twist prevention device 14 is compressed in various bromide radial directions ζ when looking at the cross section of the strand t, and then undergoes plastic deformation. It loses its torsional elastic stability. If the head is replaced, the ``Nenmaiguse'' will be erased. As a result, when the strand V leaves the frame 13, a twist remains in the direction given at the downstream portion of the twist prevention device 20, that is, a twist remains.

FIG. 6 shows an example of a metal stranded wire manufacturing apparatus equipped with the twisting device of the present invention, in which each strand V fed out from the fixed wire feeding bobbin 23, 24 is A twisting motion is given to the length of the 17-minute run traveling from the sending side to the winding side.
It is wound onto a winding bobbin 25. If the take-up bobbin 25 is now rotated in the direction of the arrow shown in the figure, this strand is oriented from Z, so element 11111
− must not be given a return from S. By rotating the driving gear 22 that engages with the gear 21 of each twisting device in the direction of the arrow, the frame 13 of each twisting device also rotates in the direction of the arrow, and as a result, the torsion prevention device 20 on the outlet side In this invention, the strand V is given a directional twist by S on the downstream side of the wire.As mentioned above, the twist is twisted in the middle of the traveling movement from the sending side to the winding side. A predetermined twist can be given to the desired strands. Therefore, unlike the conventional method, it is not necessary to apply rotation γx to one delivery bobbin for twisting the strands, and a large-capacity fixed delivery bobbin can be used. Therefore, it is possible to reduce the labor involved in replacing the bobbin, and to achieve highly efficient and high-speed twisting. Another example is the case of a composite stranded wire that includes irregular cross-section strands and circular cross-section strands in the same stranded layer. Effects such as being particularly suitable for use in manufacturing can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a simplified side view schematically showing an example of a conventional manufacturing device for stranded metal wires, and Fig. 2 is a simplified (+tl 1 side view, Figure 8 is a simplified side view to explain that the line Φ body that passes through the same point leaves no space left behind, Figure 4 is a simplified side view to explain the principle of the method of this invention, and Figure 5 is a simplified side view of this FIG. 6 is a schematic side sectional view showing an apparatus according to an embodiment of the invention, and FIG. 6 is a simplified side view showing an example of a metal stranded wire manufacturing apparatus +1 using the twisting apparatus of the invention. Rotation prevention point, P2... Zth rotation prevention point, 13... Frame, 14.20... Spin rotation prevention device, 15A, 15B... Winding is a sheave device, 1
6.17.18.19...Strain curl removal device. Agent Propensity to be a Patent Attorney Mamoru #;1 Figure 2 Figure 3 Figure 5 Figure 1 Picture Song Figure 4 Figure 6

Claims (1)

[Scope of Claims] 1. A first twisting prevention point (P,) that prevents the filamentary body pulled out from the delivery side from torsionally rotating in the circumferential direction, and a distance from the first twisting blocking point. A step of traveling toward the winding side via a similar second twisting prevention point (P,) at the same position, and moving the first twisting prevention point and the second twisting prevention point. A step of rotating the filament body integrally around a central axis line, and a step of rotating the filament body integrally around a central axis line, and removing the torsion curl generated in the filament body pulled out from the delivery side at an upstream portion of the first torsion prevention point. A method for imparting twist to a traveling linear body, comprising the step of removing or reducing the amount of twist between a rotation prevention point and the second rotation prevention point. 2. Provided within the running path section of the linear body that travels from the sending side to the winding side in multiple directions, and the running linear body Q
'1 A hollow frame (13) which is rotatable around the running filament body around the central axis line, and twisting prevention devices arranged at the filament body introduction part and the lead-out part of the frame, respectively. (14, 20) and a pair of sheave devices (15A
, 15B) and a torsion curl removal device (16, 17, 18, 19) provided on the strand traveling path between the sheave devices. More return giving device