JPH07105766A - Twisting method for insulated electric wire - Google Patents

Abstract

PURPOSE:To provide a method capable of performing given gathering to twisting without a rewinding machine on a delivery side in a method wherein plural insulated electric wires are twisted by a winding rotation type twisting machine. CONSTITUTION:In a method wherein insulated electric wires 2 delivered from plural bobbins 1 are gathered in a gathering die 4 via a gathering plate 3 to be twisted by winding and rotating on a winder 6 side, a projection-attached electric wire, having a protruded part 23 rising from the surface of a coat 22 and continuing in a longitudinal direction, is used as the insulated electric wires 2 delivered from the respective bobbins 1. It is made possible that a twist to be transferred to the delivering bobbin 1 side is prevented and twisting is conducted while keeping a uniform rotation direction. The protruded part of the projection-attached electric wire is better provided into a straight line along the axial direction of the electric wire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for twisting insulated electric wires. In particular, the present invention relates to the provision of a method capable of twisting insulated wires in a winding rotary type twisting machine without using a twisting machine.

[0002]

2. Description of the Related Art When an insulated electric wire such as a coaxial wire is wound and twisted by a rotary type twisting machine, it is necessary to twist back the insulated electric wire at the sending side. The reason is as follows. That is,
In a type of twisting machine that winds and rotates on the winder side, the insulated wires are gathered in a gathering die without twisting and twisted together. Join in the same direction. There is no problem if the twist applied to the insulated wire itself can be gathered → twisted while being uniformly applied in the longitudinal direction, but when the insulated wire passes through the gathering die, the twist due to rotation of the winder is squeezed It is transmitted to the delivery bobbin side), and as a result, the twist is accumulated between the collecting plate and the delivery bobbin.

If twists are accumulated in the insulated wire itself, problems such as kinks will occur in the insulated wire, resulting in defective products.
Therefore, in the past, a twisting machine was used on the sending side to twist the insulated wire, and then the assembly-> twisting process was performed. When twisting back was performed on the sending side in this way, the number of twisting rotations could not be increased (maximum 250 rpm). Further, the twisting machine is expensive, which increases the manufacturing cost of the twisted electric wire. Further, since the twisting machine itself is large, there is a problem in terms of space factor.

The present invention has been made in order to solve the above-mentioned problems of the prior art. In a method of winding a plurality of insulated wires and twisting them with a rotary type twisting machine,
It is an object of the present invention to provide a method capable of performing a predetermined gathering → twisting operation without requiring a twisting machine on the sending side.

[0005]

In order to achieve the above object, the method for twisting insulated wires of the present invention is to provide insulated wires sent from a plurality of bobbins to a collecting die via a collecting plate. In the method of gathering and twisting by winding and rotating on the winder side, as an insulated electric wire sent from each bobbin, an electric wire with a protrusion protruding from the surface of the coating and having a continuous convex portion in the longitudinal direction is used, and it is sent out. The twist transmitted to the bobbin side is prevented, and the twist can be performed while maintaining a uniform rotation direction. It is preferable that the protrusions of the electric wire with protrusions be provided in a straight line along the axial direction of the electric wire.

[0006]

1 shows an embodiment of a method for twisting insulated wires according to the present invention, in which 1,1 is a bobbin for sending out, and 2,2 are electric wires with protrusions which are improvements in the present invention. Reference numeral 3 is a collecting plate, 4 is a collecting die, 5 is a twisted electric wire, and 6 is a winding machine.

The protruding electric wires 2 sent out from each of the plurality of bobbins 1 in the direction of the arrow a are passed through the collecting plate 3 and then gathered in the gathering die 4, while the winding and rotation of the winder 6 causes the rotation A direction. By twisting it in the direction of the arrow b and twisting it, it is wound up while being twisted as a predetermined twisted electric wire 5.

Thus, the electric wire with protrusions 2 is formed by elevating the protrusions 23 on the surface of the insulating coating 22 formed on the conductor 21 and continuously forming the protrusions 23 in the longitudinal direction. From the collecting plate 3 to the collecting die 4. Now, when twist is applied in the direction of rotation A by the winder 6, twist in the direction of rotation B is also applied to the wire with protrusions 2 on the sending side. In the electric wire with protrusions 2 to which the rotation is applied, the twist in the rotation B direction applied to itself is made uniform in the convex portion 23, and the twist is not accumulated.

FIG. 2 shows an example of an electric wire with protrusions.
A convex portion having a semicircular cross section is raised on the surface of the insulating coating 22 applied on the conductor 21 and is formed in a straight line along the axial direction of the electric wire. With such straight convex portions, it is possible to reliably perform twisting while maintaining the rotation direction B uniformly.

[0010]

According to the method of twisting the insulated electric wire of the present invention as described above, the insulated electric wire itself to be sent out uses the electric wire with a protrusion which is raised on the surface of the coating and has a continuous convex portion in the longitudinal direction. Therefore, if twisting due to winding / rotation on the winder side tries to add to the sending side, the protrusions on the wire itself allow twisting while maintaining a uniform direction of rotation, so twisting of the wire on the sending side It is possible to perform predetermined assembly → twisting without using a twisting machine on the sending side without accumulating. Along with this, the number of rotations for twisting can be significantly increased, and the effect of not using a twisting back machine is that the manufacturing cost is reduced and the space factor is improved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a method of twisting insulated wires according to the present invention.

FIG. 2 is a perspective view showing an example of an electric wire with protrusions used in the twisting method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 bobbin 2 wire with protrusion 3 assembly plate 4 assembly die 5 twisted wire 6 winder 21 conductor 22 insulation coating 23 convex part

Claims (2)

[Claims] 1. In a method of collecting insulated electric wires sent from a plurality of bobbins in a collecting die via a collecting plate and twisting them by winding / rotating on the winding machine side, the insulated electric wires sent from each bobbin are covered. A twisted method of an insulated electric wire, characterized in that an electric wire with a protrusion which is raised from the surface and has a convex portion continuous in the longitudinal direction is used. 2. The method for twisting an insulated electric wire according to claim 1, wherein the convex portion of the electric wire with protrusions is provided in a straight line along the axial direction of the electric wire.