JPH0217883B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of manufacturing a sector-shaped core cable.

(Prior art) A fan-shaped cable core is a fan-shaped cable core made by wrapping three fan-shaped cores 1 with insulating tape or conductive foil tape T for shielding around a conductor having a fan-shaped cross section as shown in FIG. 7a. A book or four books are collected and twisted together in a bundle so that the cross section forms a circle, as shown in Figure b.

In this case, if the apex angle is a sector-shaped core of 90 degrees, the number of sets is four, and if the sector-shaped core is also 120 degrees, the number of sets is three.

The conventional method of manufacturing this sector-shaped core cable is
As shown in FIG. 1, a predetermined number of fan-shaped cores 1 sent out from a delivery bobbin are guided through a twisting cap 2 for each core through a pair of clamp rolls 5A, 5B, and the twisting caps 2 are sequentially arranged downstream. A rotary take-up device 3 and a rotary take-up device 4 are synchronously rotated in the same direction about the axis of a fan-shaped core cable formed by twisting.

In this conventional method, the clamp rolls 5A and 5B have roll grooves 51 and 52 each having a shape that matches the shape of the corresponding portion of the fan-shaped core 1, as shown in an enlarged view in FIG. Since the fan-shaped core 1 is introduced into the narrow space sandwiched between the roll grooves 51 and 52, it may be bitten at the entrance and the wrapping tape T may become wrinkled.
Otherwise, there would be problems such as being hurt.

(Object of the Invention) This invention has been made to eliminate the above-mentioned problems, and provides a novel sector-shaped core cable that can efficiently produce a good sector-shaped core cable without damaging the sector-shaped core. The purpose is to provide a manufacturing method for.

(Structure of the Invention) This invention involves winding each sector-shaped core to be twisted together at least once around a winding roll so that one side of the core is in close contact with the outer circumferential surface of the winding roll, and then guiding it to a mating cap. While measuring the twisting angle of each fan-shaped core at a fixed distance upstream of the twisting cap, the inclination of the winding roll is adjusted by rotating around the axis of the sector-shaped core. The present invention relates to a method for manufacturing a sector-shaped core cable, the gist of which is to assemble sector-shaped cores adjacent to each other so that the overall cross section is circular.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 4 to 6. In this invention as well, the configurations of the rotary take-up device 3 and the rotary take-up device 4 downstream thereof are the same as those of the prior art explained with reference to FIG. The introduction method to the twisting cap 2 will be mainly explained.

As shown in an enlarged view in FIG. 5, the fan-shaped core 1 pulled out from the delivery bobbin is wound around a winding roll 6 at least once and then introduced into the twisting cap 2. At this time, one side surface of the fan-shaped core 1, moreover, the entire or part of the flat side surface is wound around the winding roll 6 so as to be in close contact with the outer circumferential surface 61 of the winding roll 6, and both surfaces that are in contact with each other Due to the frictional force between them, the sector core 1 is restrained from rotating around its own axis with respect to the winding roll 6. This state is clearly shown in the same figure, which is partially cut away. Note that in this figure, in order to make it easier to understand the twist of the fan-shaped core 1, the wrapping tape T is partially removed.

After each fan-shaped core 1 is wound around a winding roll 6, it is introduced into a twisting cap 2, where, as shown in FIG. It can be summarized as follows.

What is important here is that when the angular phase of each sector core 1 is adjusted at the entrance of the twisting cap 2, the state shown in FIG. 2 so that it matches the central axis of No. 2.

The fan-shaped core 1 is twisted at a predetermined rate, for example in the direction of the arrow in the figure, under the influence of the twisting rotation of the downstream rotary take-off device 3, so that it is twisted at a fixed distance L upstream from the twisting cap 2. By measuring and adjusting the angular phase of the sector core 1 at a point, the angular phase at the entrance of the twisting cap 2 can be adjusted to the desired state described above.

In order to actually measure the angular phase of the fan-shaped core 1, a line image sensor is used in this embodiment. That is, by arranging the light source 9 inside and precisely measuring the length d of the shadow in the width direction of the fan-shaped core 1 caused by the light from the light source 9, the angular phase of the fan-shaped core 1 at the measured position can be determined. to know. Of course, the fact that the shadow value of d changes slightly due to changes in the angular phase of the sector core 1 is utilized.

In FIG. 5, the reference numeral 8 indicates a line image sensor. Signals from this line image sensor 8 are transmitted to an image controller 10, and information in this image controller 10 is given to the winding roll rotation motor 7. The winding roll 6 is rotated by a small angle, and the winding roll 6 is swung left and right by a small angle around the axis of the fan-shaped core 1.

In addition, the reference numeral 62 denotes a frame that supports the winding roll 6 rotatably around its own axis, and the reference numeral 72
71 is a worm wheel which is fixed to the frame 62 and has the axis of the fan-shaped core 1 as its central axis; and 71 is a worm which is engaged with the worm wheel 72 and directly connected to the winding roll rotation motor 7.

Although not shown, another method for measuring the angular phase of the fan-shaped core 1 is to apply a light beam from a light source 9 to one side of the fan-shaped core 1 and input the shadow of this surface to the line image sensor 8. This is the way to do it.

(Effects of the Invention) According to the present invention, (i) the fan-shaped core is wrapped around the outer peripheral surface of the flat roll and restrained without being introduced into the narrow roll groove between a pair of clamp rolls; (ii) is not likely to damage the insulation or shielding tape;
This method measures the torsion angle of the sector core at a fixed position upstream of the twisting cap, and uses this as a reference to match the apex angle lines of each sector core in the twisting cap, so it is possible to obtain a good apex angle. It is possible to align the wires and obtain a fan-shaped core cable that does not lose its shape and has a perfectly circular cross section as a whole.

[Brief explanation of drawings]

FIG. 1 is a simplified side view showing an example of a conventional fan-shaped core cable manufacturing device, FIG. 2 is an enlarged side view showing the clamp roll portion, and FIG. FIG. 4 is a simplified side view showing an apparatus used to carry out a method according to an embodiment of the present invention, FIG. FIG. 7 is a perspective view showing the fan-shaped core and the twisted state thereof. 1...Sector-shaped core, 2...Twisted cap, 3...
...Rotary take-up device, 4...Rotary take-up device, 6...
Wrapping roll, 61... Outer circumferential surface, 7... Wrapping roll rotation motor, 8... Line image sensor, 9...
...image controller.

Claims (1)

[Claims] 1. A predetermined number of fan-shaped cores 1 are gathered together in a twisting cap 2, and taken up while being twisted by a rotary take-up device 3 located downstream, and then twisted and taken up by a rotary take-up device 4 located further downstream. In the method for manufacturing a fan-shaped core cable that rotates synchronously around the axis of the core cable in the same direction as the rotary pulling device, the twisted base 2
Each sector core 1 is wound at least once around the outer circumferential surface 61 of the winding roll 6 so that one side of the core 1 is brought into close contact with the winding roll 6, and then introduced into the twisting cap 2. At this time, each sector core 1 While measuring the torsion angle at a certain distance upstream of the twisting cap 2, the inclination of the winding roll 61 is adjusted by rotating around the axis of each sector core 1, and thereby the twisting angle in the twisting cap 2 is adjusted. Multiple sector cores 1
A method for manufacturing a fan-shaped core cable, characterized in that the cables are assembled adjacently so that the overall cross section is circular.