JPS6282614A - Manufacturing method of pre-hanger type cable - 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 [Industrial Field of Application] The present invention relates to a method for manufacturing self-supporting cables, particularly pre-hanger cables.

[Prior Art] FIGS. 2(A) and 2(e) are a plan view and a cross-sectional view, respectively, showing a pre-hanger type cable 1. This pre-hanger type cable 1 is made by fixing a cable 2 and a hanging wire 3 with a support 4 with an appropriate gap G and pitch P.

FIG. 3 is a plan view for explaining a conventional method of manufacturing the pre-hanger type cable 1 as shown in FIG. The cable 2 and the suspension line 3 are each connected to a cable sending machine 5,
The suspension wires are sent out side by side from the hanging wire sending machine 6, and therefore the molding devices 7 are placed side by side. This molding device 7 extrudes and molds a support 4 (Fig. 2) onto the cable 2 and hanging wire 3 that are inserted in parallel, and is then taken up by a take-up machine 8 and wound around a take-up machine 9 as a pre-hanger type cable 1. taken.

[Problems to be Solved by the Invention] However, the conventional manufacturing method requires three steps: extruding the sheath of the cable 2, extruding the sheath of the hanging wire 3, and molding the support 4. Furthermore, in the molding process, the support 4 is extruded and molded, so the line operation becomes intermittent, which, together with the three processes mentioned above, reduces production efficiency, leading to delivery delays and increased costs. Furthermore, the molding device 7 has problems such as dangerous manual work such as fitting cables to the mold, making it impossible to perform safe work.

The purpose of the present invention is to solve the problems of the prior art described above,
The purpose of the present invention is to improve production efficiency and provide a new method for manufacturing pre-hanger type cables safely at low cost.

Means for Solving Problem F] The method for manufacturing a pre-hanger type cable according to the present invention is to reduce the operating speed of the sending machine and the pulling machine at the same time and at a predetermined period while jacketing the cable core and the cable wire. to form the support portion.

[Function] In the present invention, since the operating speeds of the delivery and take-up machines are controlled simultaneously and at predetermined intervals, supports can be successively formed on the Brebunker type cable at appropriate pitches.

[Embodiment] FIG. 1 is a plan view for explaining an embodiment of the present invention. The cable core 12 and the messenger wire 13 are fed in advance from the cable core sending machine 14 and the messenger wire sending 1fi 15 to the sending machine 16 in advance. The cable core 12 and mesh wire 13 that are fed in parallel from the feeder 16 to the extruder 17 are
Jacked in 7. Since the extruder 17 is rotating at a constant speed, the sending machine 16 and the take-up machine 8
When the operating speeds of the two are controlled at the same time and at a predetermined period, for example, when the sending machine 16 and the taking machine 8 are simultaneously stopped for a few seconds or decelerated, the supports 4 (Fig. The cable 1 is formed. This pre-hanger type cable 1 is then transferred to an extruder 17 and a take-off machine 8.
The support 4 is cooled by a cooling device 18 installed between the supports 4 and taken up by a take-up roller 8 while maintaining its shape, and then wound up by a winder 9. The speed control of the sending machine 16 and the take-up machine 8 is performed by a counter 1 installed between the take-up machine 8 and the take-up machine 9.
This is done by the control device 20 which picks up the signal from 9. Thereby, the pre-hanger type cable 1 can be manufactured in one step.

Regarding the embodiment in which the work is performed in one step), it is also conceivable to work on the cable 2 and the hanging wire 3 in separate steps, and only form the support 4 on the line shown in FIG. 1.

[Effects of invention The present invention has the following remarkable effects.

(1) Pre-hanger type cables can be manufactured in one process, improving production efficiency.

(2) Since molding is not done like in the conventional method,
Production capacity will increase dramatically.

(3) An inexpensive cable can be obtained by the above (1) and (2).

(4) Manual work with molds is eliminated, making work safer.

[Brief explanation of drawings]

FIG. 1 is a plan view for explaining one embodiment of the present invention, FIGS. 2(A) and 2(e) are a plan view and a cross-sectional view showing a pre-hanger type cable, respectively, and FIG. 3 is a conventional cable. FIG. 3 is a plan view for explaining the manufacturing method. 1 is a pre-hanger type cable, 2 is a cable, 3 is a hanging wire, 4 is a support, 5 is a cable feeder, 6 is a hanging wire feeder, 7 is a molding device, 8 is a pulling machine, 9 is a winding machine, 12 is a 13 is a cable core, 13 is a Messenger wire, 14 is a cable core feeder, 15 is a Messenger wire feeder, 16 is a feeder, 17 is an extruder, 18 is a cooling device, 19 is a counter, and 20 is a control device.

Claims (3)

[Claims] (1) While jacketing the cable core and messenger wire that are fed in parallel from the sending machine in the extruder, the operating speed of the sending machine and the pulling machine that takes off the pre-hanger type cable after jacketing is controlled at the same time and at a predetermined period. A method for manufacturing a pre-hanger type cable, characterized by forming a support under control. (2) The speed control of the sending machine and the taking machine is a pre-hanger according to claim 1, wherein the speed control is performed by stopping or decelerating the operation for several seconds by a control device that picks up a signal from a counter provided after the taking machine. Method of manufacturing type cable. (3) The method for manufacturing a pre-hanger type cable according to claim 2, wherein the supports are formed one after another at an appropriate pitch.