JPH0327733Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a welding conduit cable that uses a flexible soft copper stranded wire with a reinforcing cable such as stainless steel wire or piano wire in the center, and an operating wire core that is insulated and coated with fluororesin. It is related to.

Conventionally, this type of welding conduit cable has a gas supply pipe made of nylon, fluororesin, or rubber.
The power conductor and operating wire core are passed together in a vinyl chloride tube, or the power conductor and the operating wire core are twisted concentrically around the gas supply pipe and the outer circumference is covered with insulation. There are some that have a sheath on them, and the operating wire core thereof generally uses an annealed copper aggregate stranded wire or an insulated wire with an annealed copper concentric strand covered with a cross-linked polyethylene or the like.

However, the actual usage conditions are very severe, such as tension and bending with twisting, and as a result, the conductor of the operating line core breaks in a short period of time, resulting in defective products due to malfunction of the welding torch, and the operating line It was wasteful and uneconomical to replace the entire cable because only the core was broken.

The present invention is aimed at eliminating these above-mentioned drawbacks.

The present invention will be explained based on the drawings. FIG. 1 is a perspective view of a welding conduit cable according to the present invention. A power conductor 2 and an operating wire core 3 are twisted concentrically around a gas supply hose 1 made of fluororesin (ETFE, FEP, PFA, etc.) in a spiral shape. A tape-shaped separator 4 made of non-woven fabric, rubberized fabric, or paper is wrapped horizontally or vertically so as to cover the entire circumference on this twisted body, and a sheath 5 of chloroprene rubber or the like is further applied. . As shown in Fig. 2, the operating wire core 3 used here is a composite of flexible annealed copper wires 32 with a diameter of 0.08 to 0.18 mm centered around a reinforcing cable 31 made of twisted stainless steel wire, steel wire, piano wire, etc. Twisted, fluororesin (ETFE, FEP,
It is coated with an insulator 33 made of PFA, etc.).
Here, the flexible annealed copper wire 32 has a diameter of 0.08~
The reason for using a thin wire of 0.18 mm is that wires thinner than 0.08 mm, for example 0.05 mm, are expensive, and wires larger than 0.18 mm lack flexibility and have poor bending resistance. This is because the sex becomes worse. Further, the reason why fluororesin is used as the gas supply hose 1 and the insulator 33 of the operating line core is to improve tensile strength and bending resistance by using fluororesin which has excellent mechanical strength.

The welding conduit cable based on this idea is
The separator reduces the tension applied directly from the sheath to the operating wire core, and the provision of reinforcing cords for the operating wire core improves tensile strength and improves the flexibility of the conductor. As a result, the bending resistance has a breakage life of more than three times (9 months) compared to conventional products (approximately 3 months) under the same usage conditions.
~10 months), cable wear is reduced to 1/3 compared to conventional methods, making it economical and
It has the advantage of reducing the occurrence of defective products due to malfunction due to disconnection.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of the welding conduit cable of the present invention, and FIG. 2 is an external perspective view of the operating core of the welding conduit cable of the present invention. 1...Gas supply hose, 2...Power conductor, 3
... Operation wire core, 4 ... Separator, 5 ... Sheath, 31 ... Reinforcement cable, 32 ... Flexible annealed copper wire, 33
……Insulator.

Claims (1)

[Scope of utility model registration request] As an operating wire core for welding conduit cables,
Centering on reinforcing cables made of twisted stainless steel wire, steel wire, piano wire, etc., flexible annealed copper wire with a diameter of 0.08 to 0.18 mm is twisted together, and insulated wire coated with fluororesin insulation is used. , a welding conduit cable characterized in that it is twisted concentrically around a fluororesin gas supply hose together with a power conductor, and is sheathed with a separator in between.