JPH0342408Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention consists of a vertical and horizontal mixed type optical fiber wire twisting device,
In particular, the present invention relates to a vertical and horizontal mixed optical fiber wire twisting device that combines a vertical twisting machine, a thread winding device placed horizontally on the floor, and a tape winding device.

Recently, optical fibers have been developed, and the demand for optical fiber strands is increasing. Optical fiber cables usually have a tension wire, such as a steel wire, at the center of the strands to provide tensile strength in the longitudinal direction. As a special optical fiber twisting machine handles two types of wires of different materials at the same time, it is complicated to replace the delivery bobbin, and there are various problems including confusion when the tension wire breaks. There were some inconveniences. In addition, the difficulty of locating a factory has increased recently, and there has been a demand for a stranded wire manufacturing device that can be easily installed even in a relatively small factory building with neither a very high ceiling nor a large area.

This invention was made to eliminate such conventional inconveniences and to meet new demands. In particular, when the tension wire breaks, it does not interfere with other optical fiber wires, and it can be used in narrow spaces. It is an object of the present invention to provide a new optical fiber twisting device of vertical and horizontal mixed type, which can also be installed.

First, the core of the optical fiber cable to be manufactured by the apparatus of this invention will be explained with reference to _FIG . _f are twisted together, and the thread 41 and tape T are wound thereon.

Figures 2 and 3 show an embodiment of the device of this invention, and the vertical cage shown as 2 as a whole is assembled into a substantially hollow prismatic shape by vertically extending vertical column members 21. A vertically extending hollow central shaft 23 is rotatably supported at the center of the frame, and is driven by a pulley 25 fixed to the lower end thereof.

At least one shelf board 24 (in this example, a plurality of shelf boards 24 at different heights) is fixed to the central shaft 23, and an optical fiber wire sending device 22 for sending out an optical fiber wire w _f is mounted on this shelf board 24. placed. In this embodiment, a total of eight optical fiber wire delivery devices 22 are provided as shown in FIG.

A twisting die 3 is provided on the central axis of the central shaft 23 in the upper part of the vertical cage 2, and at least one thread winding device 4 is arranged in a normal horizontal position on the floor downstream of the progress of the wire. Ru.

A tension wire sending device 1 is provided close to the vertical cage 2 and sends out a tension wire w _c .
The tension wire w _c pulled out from this is guided by a guide roller and then guided to the lower end of the central shaft 23, from where it passes through the hollow part of the central shaft 23 and is turned into an optical fiber at the twisting die 3.
w _f and are twisted together by the rotation of the vertical cage 2.

Usually steel or a suitable metal wire with high tensile strength is used as the tension wire w _c , but this tension wire w _c is connected to the twisting die 3 which is the confluence point.
Since it runs inside the central shaft 23, which is completely isolated from the optical fiber wire w _f , up to the position, even if there is a break in the middle, the tension wire w _c will jump and cut or damage the optical fiber wire w _f . There is no fear at all.

At least one (two in the illustrated example) tape winding device 5 for winding the tape T is provided downstream of the thread winding device 4, and a take-up device 6 and a winding device 7 are further provided downstream of the tape winding device 5. Ru. Note that the reference numeral 8 indicates a traverser device.

As detailed above, the vertical optical fiber twisting device of this invention can (i) use a vertical cage and increase the number of shelves even when the number of optical fiber wires increases; It can be installed even on a small site.
(ii) Since it is a mixed type in which the wire twisting machine is vertical and the tape winding device and the rest are horizontal, it can be used even in factories with narrow sites and relatively low buildings. (iii) Since the tension wire is completely isolated within the hollow shaft until it merges with the optical fiber wire, when the tension wire breaks, it will not bounce and affect the surrounding optical fiber wires, etc. (iv)
There are advantages such as easy replacement of the center line bobbin and the optical fiber wire bobbin.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the optical fiber cable cores to be twisted by this invented device, Fig. 2 is a side view showing an embodiment of this invention, and Fig. 3 shows the arrangement of the optical fiber wire feeding device. FIG. 1... Tension wire sending device, 2... Vertical cage, 22... Optical fiber wire sending device, 3
...Twisting die, 4... Thread winding device, 5...
Tape winding device.

Claims (1)

[Claims for Utility Model Registration] (a) The shelf consists of a vertically extending hollow center shaft 23 that is rotatably provided and a multi-stage shelf board 24 that is attached to the center shaft at varying heights in the axial direction. Optical fiber feeder 2 on the board
(b) a tension wire sending device 1 disposed so as to send out the central tension wire Wc through the inside of the central shaft; (c) the above-mentioned A twisting die 3 disposed on the center line of the central axis above the vertical cage in close proximity to the shaft end of the center axis; (d) horizontally placed sequentially on the floor downstream of the twisting die; 1. A vertical and horizontal mixed type optical fiber wire twisting device, comprising: at least one thread winding device 4 and at least one tape winding device 5 disposed in the vertical and horizontal directions.