JPS617510A - Press molding machine for flat 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] [Background and Objectives of the Invention] The present invention relates to a forming device for rectangular stranded wires used in superconducting coils, etc., and rectangular stranded wires in general that are thin and rectangular in shape and require flexibility. It is.

Twisted wire is usually used when obtaining a conductor with large capacitance or when flexibility is required even if the size is small.
The present invention has a particularly rectangular cross-sectional shape and is used for cotton-wrapped or sequel-braided wire conductors, and is suitable for winding wires of electrical equipment with large currents.

Conventionally, stranded wires have been sandwiched and molded using a device made of a highly slippery synthetic resin molding material, but as the degree of flatness increases, the shape tends to collapse.

As a method for preventing the deformation of the wire, increasing the pressure even further has the disadvantage that the frictional resistance with the stranded wire increases, further increasing the tension.

Therefore, for stranded wires with a shape or structure that easily loses their shape, a holding plate is used with the intention of preventing the shape from collapsing. in,
It could not be applied to structures with a large number of twists.

The object of the present invention is to improve these conventional problems and provide an apparatus for forming rectangular shaped stranded wires of stable quality and suitable for long lengths.

[Summary of the invention]

That is, the gist of the present invention is that the roller pre-forming device is installed immediately after the wire rod passes through the collecting die.

The structure of the present invention is that a roller forming device is provided at the stage before forming the stranded wire coming out of the collecting die with the main forming roll, and this roller forming device is precise and has low rolling resistance. The material used is hardened bearing steel, which is a super hard material, and has a material structure that can withstand high pressure.

The mechanism uses a bearing structure for each roll group, and the rollers are installed in a circulating manner to minimize rolling resistance.In order to improve the forming precision and improve the appearance, a belt made of metal, etc. is press-molded into the form of rollers. Hang it so that it rotates on the outside of the device.

〔Example〕

Next, one embodiment of the apparatus of the present invention will be described in comparison with the drawings.

FIG. 1 is a front view of a rectangular forming stranded wire press molding apparatus according to the present invention, and FIG. 2 is a cross-sectional view of the rectangular forming stranded wire,
In the figure, 1 is a wire rod, which is sent out from a wire twisting machine that twists a large number of wire rods at a fixed twisting pitch.The wire rod 1 passes through a collecting plate 2 and is passed through a collecting die 3 to form a rectangular shape. It becomes a twisted wire.

Thereafter, it enters the roller-shaped pre-molding device 4 and applies pressure in the thickness direction, thereby pre-molding it to a constant thickness. Next, the stranded wire passed through the main forming roll 5 is pressure-molded to a required thickness, and becomes a rectangular-molded stranded wire having a planar outer periphery as shown in FIG.

〔Effect of the invention〕

The stranded wire twisted by the collecting die has bulges at both ends and easily collapses, so a roller-like pre-forming device was installed in the small space between the collecting die and the main forming roll to prevent the wire from slipping. No, you can use a high degree of pressure to completely suppress the bulges at both ends.

This pre-forming device rolls the surface of the stranded wire without any force, so there is little resistance that would lead to an increase in tension, and there is almost no dimensional change due to wear, so it is stable over long lengths without any trouble, and also has high quality. A high strand is formed.

If the wire is simply pressed down with a presser plate, as in the conventional case, the frictional resistance will be extremely large, and the problem of deformation and wire breakage due to the influence of tension will be improved.

However, it is still excellent in that it can prevent sudden wire breakage or wire breakage during long work due to abrasion of the presser plate.

[Brief explanation of the drawing]

FIG. 1 is a front view of a rectangular forming stranded wire press molding apparatus according to the present invention, and FIG. 2 is a cross-sectional view of the same rectangular forming stranded wire. 1... Wire rod, 2... Gathering board, 3...
... Collective die, 4 ... Roll-shaped pre-forming device, 5 ... Main forming roll.弗 1 Himi 2 l

Claims (1)

[Claims] (1) Copper, copper alloy, aluminum, aluminum alloy,
A press molding device for manufacturing rectangular shaped stranded wire from iron, sodium, and composite materials thereof, characterized in that it is equipped with a set of dies for forming the wire, a roller-shaped preforming device, and a main forming roll. Twisted wire press molding equipment.