JPH0251228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cable core wire processing machine, and more specifically, the cable core wire is made smaller in diameter than the core wire diameter before processing by drawing a sleeve attached to the cable core wire together with the core wire while applying external pressure. It is related to processing machines.

When connecting power cables and the like, in the case of stranded wires, connection means through sleeves or connection terminals are generally used. In the case of sleeve connection, as shown in Fig. 4, remove the coating 2 at the end of the cable 1,
The core wire 3 is inserted into the sleeve 4 and diametrically compressed or twisted, or if the core wire diameter is large, molten metal is poured into the sleeve, but in either case, the sleeve itself is thick, so the sleeve The attachment part will be larger than the core wire diameter, and if supplementary insulation coating 5 is applied to this connection part, it will inevitably become larger than the outer diameter of the cable itself, which may cause problems in wiring work such as passing it into the duct. There was a drawback.

The present invention aims to eliminate the above-mentioned drawbacks, and is characterized by a core wire consisting of a support rod connected to a sleeve structure having a cavity of a size that allows easy insertion of the core wire. a compression member;
The cylinder comprises means for liquid-tightly fixing one end of the sleeve structure, means for liquid-tightly protruding the end of the support rod, and a cylinder having a pressurized liquid inlet therein to increase the cylinder internal pressure. Accordingly, there is provided a sleeve core wire processing machine which compresses and tapers the core wire inserted into the sleeve structure.

The present invention will be described in detail below with reference to one embodiment shown in each of the figures from FIG. 1 to FIG.

As shown in FIG. 1, the sleeve core wire processing machine of the present invention has a pressurized liquid inlet 12 for injecting pressurized liquid in the center, an opening 13 having an inner diameter equal to the inner diameter at one end, and a diameter smaller than the opening at the other end. A flange 15 with a tapered core wire insertion hole 16 is attached to the opening 13 of the cylinder 11 having an opening 14 with a screw 17.
It is designed to be installed. The core compression member 21 installed in the cylinder 11 is made of a conductor material such as copper or aluminum, and has packing 18, 1 in the opening 13 with the flange 15 at one end.
It is easy to insert a core wire having a flange 23 that can be fluid-tightly clamped via the cylinder 9, and the core wire has a length of approximately 1/2 of the cylinder length (longer than the length required for connection) and is located approximately in the center. A sleeve component 22 whose wall thickness is thinner than both sides is connected to the sleeve component via a flange 24, and protrudes from the opening 14 to the outside of the cylinder through a packing 20 in a liquid-tight manner. The support rod 25 supports the other end.

The cable core wire processing machine of the present invention is constructed as described above, and the procedure for processing a core wire using this processing machine will be explained below.

First, remove the above-mentioned length from the end of the cable 26 to be connected, and then remove the core wire (stranded wire).
Display 28. This core wire 28 is connected to the flange 15
is inserted into the sleeve structure 23 through the opening 16 of the sleeve. The size of this sleeve component is determined in advance according to the diameter of the core wire.

Next, by injecting pressurized liquid into the cylinder 11 from a hydraulic machine (not shown) attached to the pressurized liquid inlet 12, the thin part of the sleeve structure 23 is inserted into the core wire as shown in FIG. 2b. The core wire is compressed by applying pressure in the direction of its center through the core wire. In this case, both sides of the sleeve structure are thickened so that it does not collapse in the diametrical direction even under a pressure of 3000 kg/cm ² or more due to pressurized liquid. Also,
Due to the pressure applied to the flange 24 and the difference between the thickness of the core wire compressed material 21 and the wall thickness of the support rod 25, the sleeve component 22 was forcibly retreated until the flange 24 came into contact with the end surface of the cylinder 11, and the core wire was bitten. In this state, the wire is stretched together with the core wire, and the diameter of the core wire is reduced to the extent possible.

When the flange 24 came into contact with the end face of the cylinder 11 as described above, the injection of the pressurized flow was stopped, the liquid contained in the cylinder was removed, the flange 15 was removed, and the core compression member 21 was fixed to the cable. Take it out from inside the cylinder 11 in this state.
Thereafter, the flange 23 is removed and the sleeve component 23 is cut at its narrowest portion, thereby completing the core wire reduction work. Thereafter, the core wire of another cable is compressed in the same manner.

The pair of cables 26, 26b, which have a sleeve structure and have a reduced core wire diameter, have a tapered sheath 27 as shown in FIG. By inserting the core wire 28 from both sides of the sleeve 29 and compressing the sleeve, the two cables are connected, and if this connecting part is covered with a supplementary insulator 30, the outer diameter of this part will be smaller than the outer diameter of the cable. It also doesn't have to get big.

As described above, the present invention provides a core wire compression member consisting of a sleeve component having a cavity large enough to easily insert the core wire and a supporting rod connected to the core wire compression member, and one end of the sleeve component fixed in a fluid-tight manner. a cylinder having an inlet for pressurized liquid therein, and means for causing the end of the support rod to protrude in a liquid-tight manner, and the core wire inserted into the sleeve structure is Since it is compressed and formed into a tapered shape, the core wire to be connected becomes thinner and simpler, making it easier to connect, and the insulation coating applied to the connection part becomes smaller, eliminating problems during wiring after connection. It has the effect of

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a core wire processing machine which is an embodiment of the present invention, Fig. 2 is a cross-sectional view for explaining the processing state, and Fig. 3 is a sleeve connection of the core wire processed by the processing machine according to the present invention. FIG. 4 is a sectional view of a conventional cable sleeve connection point. 11... Cylinder, 12... Pressurized liquid inlet,
15, 23, 24...flange, 21...core wire compression material, 22...sleeve structure, 25...support rod.

Claims (1)

[Claims] 1. A pressurized liquid inlet 12 is provided at approximately the center of the cylinder 11 toward the center, and a sleeve is attached to the side surface of the cylinder 11 on the outside of one of the openings 13 and 14 formed at both ends of the cylinder 11. The sleeve structure 22 is provided in the cylinder 11 by fixing the flange 23 of the structure 22 in a liquid-tight manner, and the relatively small diameter support rod 25 passing through the intermediate flange 24 of the sleeve structure 22 is fixed in a liquid-tight manner. A compressed core wire having extensibility is supported so as to protrude from the other opening 14 of the openings 13 and 14, and is formed in the sleeve component 22 on the one opening 13 side with the intermediate flange 24 as a boundary. The outer peripheral surface of the machine 21 and the cylinder 1
The pressurized liquid inlet 12 is located between the inner peripheral surface of the
A cable core wire processing machine with a communicating opening.