JPH04188512A - Manufacture of cable with drain wire laid alongside - Google Patents

Abstract

PURPOSE:To lay a drain wire alongside the applicable cable in good workmanship by holding an insulated core, the drain wire, and a shield tape with tensions which are below their respective rupture strengths, winding fast the shield tape, and retaining a locating tip within a specific distance of the tape wound part. CONSTITUTION:A shield tape 16 is wound fast while an insulated core 12, drain wire 14, and the shield tape 16 are maintained with tensions ranging between 20-50% of their respective rupture strengths, and a locating tip 18 is retained in a position where the distance (d) from the tape wound part 22 becomes below 20mm. Thus a cable 10 with a drain wire laid alongside is yielded. According to this constitution, no wrinkles will be generated even though a thick shield tape 16 is used, nor elongation be generated in the materials of the core 12 and drain wire 14. Further the position of the drain wire 14 can be stabilized, and the wire 14 be put alongside the cable in good workmanship.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a cable with vertically attached drain wires, and particularly relates to an improvement in the method of longitudinally attaching a drain wire to an insulated core and wrapping a shield tape around it. It is something.

[Prior art] A drain edge vertically attached cable is made by attaching a drain line vertically to an insulated core, positioning the insulated core and drain line with a positioning chip (57), and wrapping a shield tape around the insulated core and drain line. I wrapped it in plastic wrap and sent it to 8i.

[Problem to be solved by the invention 1 When the thickness of the shield tape or insulating core is 3% or less of the outer diameter, the tension of the insulating core, drain wire, and shield tape should be around 200 g/piece regardless of their breaking strength. The company was able to produce high quality cables.

However, if the shielding tape is extremely thick, if you wrap the shielding tape while maintaining the above tension, the tape will be too strong or too small, and wrinkles will appear in the shielding tape when wrapping it, causing the appearance of the cable. If it becomes extremely bad, there will be swells or swells in the drain line. For this reason, sheath breakage may occur at the wrinkled portion of the shielding tape.6 Furthermore, if waviness occurs in the drain wire, the end processing operation of the drain wire may be expensive during terminal processing. Furthermore,
When the tension of the insulated core, drain wire, and shield tape becomes strong, they are stretched and the insulated core, drain wire become thinner, and the width of the shield tape becomes narrower, so the resistance of each conductor increases.

The object of the present invention is to avoid the above-mentioned drawbacks, to provide a drain line that can be manufactured without wrinkles in the sheet tape, that allows a drain line to be properly attached vertically, and that can be manufactured without stretching the material completely. The object of the present invention is to provide a method for manufacturing a vertically spliced cable.

[Means for Solving Glare 1] In order to solve the above problem, the present invention vertically attaches a drain edge to an insulating core, and connects these insulating cores and drain wires by (ff positioning chi knob). In the manufacturing method of a drain line vertical spliced cable in which shield tape is wrapped around the insulated core and drain wire while positioning, the insulated core, drain wire, and shield tape are each maintained at a tension of 20 to 50% of their breaking strength. While doing so, wrap the shield tape and position the knob 2 from the tape wrapping part.
Drain ilI characterized by being maintained within 0 mm
A method for manufacturing a vertically spliced cable is provided.

[Effect 1] In this way, the tension of the shield tape is reduced to 20% of the breaking strength.
When set to ~50%, the shielding tape can be thick without wrinkling, and when the tension of the insulating core and drain wire is set to 20-50% of its breaking strength, the material will not be stretched. , and further drain line (t
7. If the ff determining tip is set within 20 mm from the tape winding part, the position of the drain line can be stabilized, and the drain line can be properly aligned vertically.

[Example] An example of the present invention will be described in detail with reference to the drawings. Fig. 1 shows a drain M vertically spliced cable 10 manufactured by the method of the present invention, and this drain line vertically spliced cable 10 is as follows: As shown in FIG. 2, one drain wire 14 is attached vertically to the insulating core 12, and these 1! It is manufactured by wrapping a shield tape 16 around the insulating core 12 and drain wire 14 while positioning the edge core 12 and drain wire 14 using a positioning chip 18. The insulating core 12 is formed by applying an insulating coating 12B to a center conductor 12A. In FIG. 1, the reference numeral 20 is a kite vibrator guided by the insulating core 12 and the drain wire 14. According to the method of the present invention, the insulating core 12, the drain wire 14, and the shield tape 16 each have their breaking strength. 20-5
Wrap the shield tape 16 while maintaining the tension at 0%,
The eye positioning chip 18 has a distance of 1 from the tape winding part 22.
The drain line vertically attached cable 10 is manufactured by maintaining the drain line at a position within 1 d or 20 mm.

In addition, in the embodiment shown in FIGS. 1 and 2, only one drain is used! J
Either the drain wires 14 are placed on both sides of the insulating core 12 and connected vertically as shown in FIG. The wires 14 may be arranged together on one side of the insulating core 12 and attached vertically.Next, referring to some embodiments of the present invention, in one embodiment, the wires 14 are 16 diameter or 0.5mm in diameter. 18mm mild steel wire with inner thickness of 0.28m
Diameter formed by coating thermoplastic resin of m or 0.74
Two drain wires of mild steel wire with a diameter of 0.26 mm are placed on both sides of the insulating core and attached vertically to an insulating core of 25 μm in thickness, and aluminum with a thickness of 10 μm is bonded to a thickness of 3 μm. Breakage of 7 insulating core wrapped with aluminum polyester seal tape with a thickness of 38 μm and width of 5.0 mm formed by adhesive bonding! J!
is 610g/piece and the insulation core is 200g/piece (32
, 8%), and the breaking strength of the drain wire is 1300g/piece, and the drain wire is supplied with a tension of 300g/piece (2
The breaking strength of the aluminum polyester shield tape was 2500 g/piece, and this shielding tape was wrapped with a tension of 700 g/piece (28%)6. The distance d from the tape winding part was 20 mm. The tolerance for the center conductor diameter of the insulated core was ±0.008 mm, and the tolerance for the drain wire conductor diameter was ±0.01 mm (JIS-C-3
102, 3152) In this way, it has been possible to manufacture a good cable while stably maintaining the position of the insulating core and the drain wire, and without damaging the appearance.

The following Table 1 shows the results of specific examples 2 to 11 of cables manufactured according to the present invention using the same materials as in the above specific examples and only changing the tension and the distance 111d of the positioning tip.

Table 1 Next, there is one comparative example that does not apply to the method of the present invention.
00g/piece (66%) tension, the drain wire is attached vertically to the insulating core with 800g/piece (62%) tension, and the aluminum polyester sealed tape is supplied with 1200g/piece (62%) tension.
7 wrapped with a tension of g/piece (48%), and the distance 11111d from the tape wrapping part of the positioning chip is 20 m.
It was set as m. The diameter of the center conductor of the insulated core is ±0.168 mm (left), and the conductor diameter of the drain wire is ±0.247 mm.1. This would exceed the tolerance of JIS-C-3102 and 3152.

FIG. 5 shows a cable manufactured in this way,
Je edge cocoa 12 and drain 1! ! Table 2 below shows the results for ratios 11112 to 11 of cables manufactured using the same material as the comparative example but only changing the tension and the distance IIId of the positioning tip. .

Table 2 In this way, the tension of the shield tape can be adjusted to 20 to 20 of the breaking strength.
If the tension is set to 50%, the shielding tape will not wrinkle even if it is thick, and if the tension of the insulating core and drain wire is set to 20 to 50% of the breaking strength, the material will not be stretched and the drain will be further strengthened. If the wire positioning tip is set within 20 mm from the tape wrapping part, the position of the drain wire can be stabilized, so it can be seen that it is possible to attach 1a well. [Effects of the Invention] According to the present invention, the following is achieved. As shown in the figure, the drain wire can be properly attached vertically without wrinkling in the sheet tape, and the cable can be manufactured without stretching the material completely, so we can produce a high quality drain line vertically attached cable. Is it possible to get something?

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a drain line longitudinal splint cable manufactured by the method of the present invention, FIG. 2 is a perspective view showing the manufacturing method of the present invention, and FIGS. 3 and 4 are other different methods of the present invention. A cross-sectional view of a cable fabricated according to an embodiment, and FIG. 5 is a schematic illustration of a cable manufactured by a conventional method. 10----- To 1z in & Iil! attached cable,
12-----insulated core, 14----drain wire,
16----Sealing table, 18-1111 positioning tip. Patent applicant Furukawa Electric Co., Ltd.

Claims (1)

[Claims] A method for manufacturing a vertically attached drain line cable, in which a drain wire is longitudinally attached to an insulated core, and a shield tape is wrapped around the insulated core and the drain wire while positioning the insulated core and the drain wire with a positioning chip,
The insulating core, the drain wire, and the shield tape are each wrapped with the shield tape while maintaining a tension of 20 to 50% of their breaking strength, and the positioning tip is maintained within 20 mm from the tape wrapping part. A method for manufacturing a vertical drain cable.