JPS5854087A - Method and apparatus for twisting raw wire - 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 cable twisting method and apparatus.

Conventionally, when twisting cable wires, for example, a device as shown in FIG. 1 is used, and the pre-twisting device 102 performs a final twist pitch twist, and then this is twice twisted by introducing a twisting device 1 OaVC. The stage of the first round (Fig. 1A)
Point), untwist by half and twist twice (point B in Figure 1).
Similarly, the technique of twisting half of the twist to the original final twist pitch is well known. In addition, in Figure 1, 1
01 is a twisting die, 108A is a flyer, 108B
104 is a floating frame, and 104 is a take-up bobbin. In this technology, the flyer of the pre-twisting device 102 can be rotated in the same direction at a rotation speed approximately twice that of the flyer 108A of the double-twisting device 10B. This is a key point in the process, and was originally developed by the applicant and has already been patented (Japanese Patent Publication No. 46-89).
No. 181).

This method of twisting strands is effective when the twisting rate of the wires near the center layer and the wires in the outer layer are quite different, such as in multi-layer twisted wires, and in the pre-twisting stage of this method, The process of twisting to the final twisting pitch is
This method is based on the basic concept of first securing the cable strands, balancing the tension of each layer of strands, untwisting by half, and then re-twisting the wire to the product twist pitch.However, multi-layer twisting When twisting materials that are not wires, especially those made of materials that are relatively easily deformed plastically, such as annealed copper wires, pre-twisting with a high twist rate at the beginning does not necessarily lead to good results, but rather leads to final twisting. In many cases, it is preferable to divide the twisting process into two stages, each half of the twist, for example, and after the first stage of twisting, the twisting state is smoothed out before the second stage of twisting is applied. I've come to understand that.

This invention has been made based on such knowledge, and embodiments of the invention will be explained below with reference to the drawings.

FIGS. 2 and 8 show an apparatus according to an embodiment of the present invention, in which the entire apparatus is arranged at an angle with respect to the lead line Y--Y. In FIG. 2, reference numeral 1 indicates an appropriate strand feeding device, numeral 2 indicates a branching plate, and numeral 8 indicates a twisting die. is depicted.

The reference numeral 4 indicates the rotary take-up device as a whole, and its structure will be explained in detail later with reference to FIG. Then, like the inlet roller 41, the wire is moved downstream from the outlet roller 44 which is in contact with the line of advance of the strand, and the cable is taken up by the capstan while being twisted around this line of backward movement. It is something that can be done.

Overall, what is denoted by 5 is a normal double-twisting device, so a detailed explanation will be omitted, but the important thing here is that the rotation axis of the flyer 52, which is rotatably supported on the base 51, 51, is vertical. The floating frame 58, which is tilted relative to the flyer 52 and is relatively rotatable around an axis that is the same as or parallel to the rotational axis of the flyer 52, is rotated by the direction of gravity applied to the weight 58A attached to the bottom of the floating frame 58. Although not parallel to the axis, the floating frame 58 can be kept stationary and stable by the weight 58A. Note that 541d is a winding bobbin driven by a coaxially provided torque motor 54A, 55 is a guide roller 56 provided at a position on the flyer 52 where the wire W is introduced from the flyer 52 into the floating frame 58 again; is the first guide roller on the floating frame 58, and 57 is the drive pulley of the flyer 52.

Now, as shown in FIG. 8, the internal structure of the rotary take-up device 4 is such that a hollow shaft 4□6, which is rotationally driven by a drive pulley 47, extends from the central axis 5-line of a hollow cylindrical casing 40. A flyer disk 45 is fixed to one end of 46. Two capstan drums 42 and 48 are provided on the outer surface of the flyer disk 45 so as to be fixed to a shaft that stands upright on the flyer disk 45 and is rotatably supported. I offing 42A, 48A
is fixed.

On the other hand, the hollow shaft 46 has both banks 48A on its outer periphery.

49A are arranged in series in the axial direction, and constitute a gear train in which a gear 49A with a rotary index is rotationally driven with respect to the hollow shaft 46 via planetary gears 48B and 48C from a pawl 48A fixed to the hollow shaft 46. has been done. This m-49AK has Ryotsu 49B fixed coaxially, and this tooth! , 49B mesh with the previously mentioned gear 42 to rotate 48A. The above structure is a planetary mechanism for rotating the capstan drum 42, 48 at a desired rotational speed independently of the rotation of the flyer disk 45 rotated by the drive pulley 47. Note that 41 and 44 are an artificial roller and an exit roller, respectively, which are provided so as to be in contact with the center axis of the hollow shaft 46, and the wire W enters from the entrance roller 41 and is routed around the capstan drum 42 and 48. Thereafter, it passes through the exit roller 44 and passes through the center axis of the hollow shaft 46 toward the twice-twisting device 5 . Note that the mechanism described here is only an example, and other mechanisms may be used as long as the mechanism is of a rotary type.

Next, the twisting method of this invention using this invention device will be explained. The strand W sent out from the strand feeding device 1 is guided to the rotary take-off device 4 via the segregating plate 2 and the twisting die 8, and after passing around the capstan drum 42 and 48 several times, it is passed through the exit roller. 44, it runs inside the hollow shaft 46 and is introduced into the twice-twisting device 5 downstream. Inside the double twisting device 5, the strands W are guided in exactly the same way as the normal twisting method.
7 The floating frame 58 passes through the final guide roller 55 on the layer 52.
It is assumed that the film is wound up by the winding device 54 via the upper guide row 256.

In the method of the present invention, the rotational speed of the flyer disk 45 of the rotary take-off device 4 is set to be approximately equal to that of the flyer 52 of the double twisting device 5. To be precise, it is preferable that the number of rotations is approximately equal to that of the fryer 52, but not exceeding that of the fryer 52. In this way, the cable wires W are twisted in the twisting die 8 by the number of rotations of the flyer disk 45 of the rotary take-off device 4, and are wound around the outer circumference of the capstan drum 42° 48 in the twisted state. It travels until it reaches the guide roller 55 of the twice-twisting device 5 while maintaining its twisted state.

Next, when moving from the guide roller 55 to the first guide row 256 on the floating frame 58, a twisting force corresponding to the rotation of the flyer 52 is applied to form a product strand. In this case, if the rotational speed of the flyer disk 45 of the rotary take-off device 4 is greater than the rotational speed n' of the flyer 52 of the twice-twisting device 5 by Δn, then on the upstream side where the strands enter the twice-twisting device 5, 2
Only the twist will be untwisted, so if you don't like this untwisting situation, you will need to set the conditions regarding the rotation speed as mentioned earlier. On the other hand, 21'.

When the number of revolutions of the seven strands 52 of the converter 5 is slightly higher, the twisted wires at the same location are heated by the difference in the number of revolutions, which can be said to be more in line with the basic idea of the method of this invention. Will.

What is important in the method of the present invention described above is that the cable wire W, which is first twisted by the rotary pulling device 4, is passed around the outer periphery of the capstan drum 42, 48 several times in the twisted state. , is a process in which the twisted state is smoothed out, that is, the torsional elastic deformation imparted to the element 1fRW by twisting is fixed as close to plastic deformation as possible. Of course, for this reason, the capstan drum is 42.4
It is preferable that the circumferential length of the diameter of No. 8 includes at least two or more twist pitches.

In this invention, when the twist is approximately half of the final twist, in order to adjust the twist state by rolling, the remaining half of the twist, which is then added in the double twisting device 5, rides on the existing twist, and the final Excellent twisted wire with uniform pitch and no twisting or uneven twisting
It has the effect of increasing the

Furthermore, since the device of this invention is essentially vertical, the installation space is small and compact, and because it is slanted, the top of the device is lower than in a true vertical type, making work easier. It also has the advantage that the floating frame can be held stationary by a weight, making the mechanism simpler.

[Brief explanation of drawings]

FIG. 1 is a simplified side view showing an example of a conventional stranding device, FIG. 2 is a side view showing an embodiment of the device of the present invention, and FIG. 8 is a side sectional view showing the inside of the rotary pulling device. Φ・Rotary pulling device, 42.48・Capstan drum, 5・2-degree twisting device, 52 Flyer, 58・Floating frame, 5
4... Winding device. Agent Patent Attorney Masu 1) Takeo IO- Figure 1 Figure 3

Claims (1)

[Scope of Claims] 1. l B) A step of putting the cables together in a twisting die and giving a pre-twist of about half of the final twist, and (B) winding a plurality of countries around the outer periphery of the pre-twisted IT cylinder. Twisting of the strands, which comprises a step of smoothing the pre-twisted state by running the wire twice, and a step of applying a second twist to the pre-twisted cable wire in the same direction and to the same degree as the pre-twist. Method. 2 (a) A flyer disk (45) that is arranged downstream of the twisting die and can rotate around the running line of the strands, and a pair of capstan drums (42) that can rotate freely with respect to the flyer disk. , 48), and (b) a floating frame (5B) inside a fryer (52) that is arranged downstream of the rotary take-off device and is rotatable with respect to the base.
) is V-shaped so as to be relatively rotatable, and a winding device (
54) A device for twisting strands of strands, comprising a two-degree twisting device (51), the axis of rotation of the two-degree twisting device being inclined with respect to the vertical direction. .