JPS58169714A - Apparatus for producing twisted wire - 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 The present invention relates to a method and apparatus for manufacturing ms conductors, particularly 8B conductors.

Currently, there is a trend toward 8B (smooth body) stranded wire conductors in order to improve electrical characteristics and save materials. When manufacturing this 8B conductor, 1) m
Methods such as forming wire conductors one by one and twisting them together, and (2) combining round $111 wires into m9 wires and then passing the twisted wires through a die to form them into 8B wires have been implemented.

However, as long as a conventional wire twisting machine is used, there are the following limitations.

In other words, when performing multi-layer twisting or concentric twisting, which is the most frequently used method for electric wire, conventional wire twisting machines rotate once while holding either the material supply drum or the wire winding drum inside the machine. Due to mechanical reasons, continuous production in which wood is supplied from outside the machine and twisted wire is wound outside the machine is not possible; Mae-konifuku is a must-have for this purpose.

In addition, apart from the above-mentioned restrictions, the cross-sectional area of the 8B conductor as a whole stranded wire maintains a dense circular shape, but the individual strands that make up this conductor have a rectangular cross-section. The present invention has been made by paying attention to the drawbacks of the prior art described above and the characteristics of the SB conductor. A method and apparatus are provided in which a conductor with a rectangular cross section for 884 conductors is produced by cutting, and these are twisted and wound continuously, or multiple single wires can be obtained at the same time without twisting. The purpose is to provide.

Various methods have been proposed for simply making circular pipes, including a) extrusion or drawing, c) continuous casting, and b) conform (patent application). There is one by Sho 5l-93902). However, in these methods, (a) is discontinuous and requires a core or special die, and in those that use a mandrel, preforming is required; There are drawbacks such as the fact that it can only be applied to thin materials and the properties change at the seam, and c) requires large-scale equipment and ii) requires a winding device to be rotated since it is made using a mechanical process.

The present invention utilizes the fact that in the conform method (2) above, pipes are manufactured continuously and rotates around an axis to continuously cut out a line with a rectangular or fan-shaped cross section. At the same time, it can be taken out as a twisted wire or as a horizontal wire.

That is, the first and second rotary bodies, which are rotatable on the same axis and constitute the wire passageway and the tube forming passageway, engage with the wire passageway and apply compressive stress to the wire in the wire passageway. a fixed shaft having a spiral inner hole whose radial wire passage cross-sectional area gradually decreases in the circumferential direction; The cutting tool and the rotary head provided in the axial direction in the strand passage 1 which communicates with the passage formed between the adjacent cutting tools are arranged, and the edge material fed through the fixed parts is inserted into the tube forming section. The method is characterized in that a circular tubular material formed as the material progresses is cut into a plurality of continuous pieces using the cutting tool, and these pieces are twisted together.

Hereinafter, the present invention will be described based on the drawings of 1i32F! 8.

FIG. 1 is a partially cutaway cross-section of the main body of a stranded wire forming machine, FIG. 2 is a longitudinal cross-sectional view thereof, and FIG. 3 is a cross-sectional view taken along the line Jll-III in FIG. 2.

In the figure, 1 and 8 are the first and second units rotating on the same axis.
is a rotating body, and the rotating body 1 has a protrusion 2 on its front end surface.
A shaft 3 is provided protruding from the rear heating surface, and an internal shaft hole 4 is provided.
The inner shaft 5 is fitted into the inner shaft 5 through a key (not shown), and the inner shaft 5 is provided with a strand passage 6 at its axial center and a threaded portion T at its tip. The second rotating body 8#i is a ring body,
Its base end 9 is wrapped around the protrusion 2 of the rotating body 1, and
A cloud-shaped wire passage 10 perpendicular to the axis and a tube forming passage 11 parallel to the axis are formed between the two, and a receiving cylinder part 12 protruding from the front of the base part 9 (on the right side in the figure) is formed. #'i rotation to rad 1
3 is fitted and fixed to the screw sT of the internal shaft 5 with a nut 16.The length and depth in the axial direction of the tube-forming path 11) and the vertical spacing are determined by the wall thickness of the circular pipe-shaped wood and the cutting, which will be described later. It can be arbitrarily selected depending on the thickness of the wire.

A plurality of cutting tools 14 are provided in a circular shape on the contact surface of the rotary head 13 with the rotating body 1 so as to protrude into the pipe forming path 11, and adjacent pipes are provided inside the rotary head 13. ) 14. Orifice formed between 14 (not shown)
A cable passageway 15 communicating with is provided in the axial direction.

17ij A flat shoe that engages with the wire passageway 10, and has a spiral inner hole 18 in which the cross section of the wire passageway gradually decreases in the circumferential direction as shown in FIG. A wire rod input port 19 communicating with the hole 18 is opened.

Next, the operation of the molding machine main body will be explained.

The wire inserted from the wire input port 19 of the fixed shoe IT is transferred to the first and 8g2 rotating bodies 1.
With the rotation of 8, it is drawn into the passage 10 by the frictional force of both sides, and advances along the spiral inner hole 18 of the stationary part 8. At this time, since the inner edge of the inner hole 18 is formed so that the cross-sectional area of the passage 10 gradually decreases, it is deformed by compressive stress in the circular direction, and is pushed into the tube-forming passage 11 and formed into a circular tube shape. Saretsu\Byte 14 Proceed in the direction. Here, the rotary head 13 is rotated in the opposite direction to the rotary body 1.8, rotated in the same direction at a faster speed than the rotary body 1.8, or temporarily stopped. As a result, a relative speed difference occurs between these rotating bodies 1°8 and the rotating head 13, and a speed difference occurs between the circular tubular material formed in the tube forming path 11 and the cutting tool 14 of the rotating head 13. To minimize the difference, the circular tube is continuously cut by the cutting tool 14 to form a plurality of cable lines. These strands are extruded out of the machine through the strand passage 15 of the rotary head 13, applied with forward tension, and shaped by a die (not shown) attached to the front of the rotary head 13. After that, when the rotary head 13 is rotating, the internal shaft "5"
The other strands passed through the 0 strands passage 6 are collected at a twisting port (not shown) and twisted together by rotating the rotary head 130, and then passed through a forming die and wound up as an 8B conductor. Further, when the rotary rod 13 is stationary, it is wound up as a multi-strand single wire.

In this case, the direction of rotation of the circular tube and the rotating head 13
The direction of the cutting blade of the cutting tool 14 attached to the machine should be reversed. ◎ Figure 4 shows an overall view of a stranded wire manufacturing apparatus incorporating the above-mentioned forming machine main body. In the figure, a indicates a wire (rough wire), and b indicates a wire serving as a core wire of the stranded wire, both of which are wound on a drum (not shown).

The wire rod is drawn down to a predetermined diameter with a die 20, passes through a rear tension applying device 121 equipped with a number of rolls 22 and a preheating heater 23, and then passes through an extrusion molding device 12 whose outside is sealed.
4, and sent out as a plurality of iX edges by extrusion molding.

The extrusion molding device 24 is connected to a vacuum device and an air conditioning device (not shown) through a pipe 25, and extrusion molding is performed:
It is designed to prevent scale (metal oxide) generation from Ig rays. The extrusion molding device 24 is equipped with the above-mentioned molding machine main body, and the shaft 3 provided in the main body is fitted with a slip ring 26, which extends through the reducer 21 driven by the motor 28, and whose tip is A die for forming the strands (not shown) is connected to a rotary cage equipped with a t-shaped die (not shown). That is, the shaft 3 is the output shaft of the IT reducer 2T, and the molding machine main body is preheated by the electric power supplied by the slip ring 26, and the rotorage and India 29 are supplied with cooling liquid. pipe 30
is provided to cool the shaft 3 and necessary parts inside the molding machine main body.

In this way, the plurality of wires (not shown) sent out by the extrusion molding device 24 are
- Via Muleta 31, said Rotary Raj, India 29
The raw material mb supplied through the shaft hole of the shaft 3 is collected at the twisting port 32 which also serves as a forming die.

The collected plurality of strands and the wood db serving as the core wire are twisted by the rotation of the forming machine main body, resulting in a twist @0. Twist mouth 3
The tension required at 2 is provided by a take-off capstan 33 and is wound onto a winder (not shown). This take-up capstan 33 is housed in a stranded wire cooling device 34, and the device 34
is connected by a pipe to a separate air conditioner (not shown).

As described above, the present invention compresses and deforms the wire by the first and second rotations that constitute the wire passageway and the tube forming passageway, and the fixed seam that engages with the wire passageway, and once forms a circular tube-shaped material. This is then cut using a plurality of bits installed on a rotating body to form a continuous number of votes, and these are twisted together by the rotation of the rotating body. It is possible to continuously produce stranded wire without turning the supply drum or stranded wire winding drum 101 outside the machine, and it is also possible to produce stranded wire from rough drawn wire to wire drawing. The stranded wire can be manufactured consistently with one series of equipment without requiring any pre-processing.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing the molding machine main body according to the present invention, FIG.
The cross-sectional view of II @ K and Figure M4 is an overall view of the stranded wire manufacturing apparatus incorporating the same forming machine body. 1... First rotating body, 8... Second rotating body, 10.
...Wire rod passage, 11...Tube forming passage, 13...Rotating body, 14...Bite, 1T...Fixed shaft, -118...
...Inner hole. Patent applicant Yazaki Sogyo Co., Ltd.

Claims (1)

[Claims] first and second U-rolling bodies that are rotatable on the same axis and constitute a wire passageway and a tube forming passageway; and a wire rod extending in a radial direction so as to engage with the wire passageway and apply compressive stress to the wire rod in the wire passageway. a fixed shoe having a spiral inner hole whose passage cross-sectional area gradually decreases in the circumferential direction; a plurality of bits that are fitted inside the second rotary body and whose end faces face the tube-forming passage; and adjacent bits; A rotary head is provided with a melting passage in one direction that communicates with the passage formed in the tube, and the round wire is fed through a fixed seam and is formed into a circle as it progresses through the tube forming path. A stranded wire manufacturing apparatus characterized in that a tubular material is cut into a continuous number of strands by the cutting tool, and these strands are twisted together.