JPS5826123B2 - SZ twisting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an SZ twisting machine for blind cables used in one-touch connectors and the like.

A blind cable is usually a cable in which a pair of cores are twisted in pairs, and twisted portions and non-twisted portions are alternately provided in the longitudinal direction of the cable.

In the twisting section of a conventional blind cable, a pair of cores are twisted in one direction, either left-handed or right-handed, so it was necessary to provide a twisting device using a complicated mechanism in the cable sending machine.

Therefore, manufacturing equipment for blind cables has become expensive.

Furthermore, since the stranded cable made by this device has a constant twisting direction, there is a problem in that a small amount of induced current is generated between each core, resulting in induction loss.

In order to solve these problems, it has been proposed to use a twisting machine that pinches the parallel sections of the blind cable and alternately creates S-twisted sections and Z-twisted sections, but a practical device has not yet been obtained. do not have.

The present invention aims to provide a small and high-performance S-Z twisting machine, and its feature is that a plurality of rotating members each having a batten for passing a pair of cores are arranged in a horizontal row. , a twisting head configured so that opposing rotating members can rotate in opposite directions at the same time; a pair of take-up rolls that rotate while vertically pinching the plurality of pairs of core rows that have passed through the twisting head; The present invention includes a drive source that changes the rotational direction of the rotating member of the twisting head over time and continuously rotates the pair of take-up rolls.

FIG. 1 is a plan view of an S-Z twisting machine which is an embodiment of the present invention, and FIG. 2 is an enlarged view of the XX cross section in FIG. 1.

The head drive motor 1 is meshed with a row of gears 5 with planks, and rotates adjacent gears 5 with planks in opposite directions.

The gear with planks 5 is rotatably supported by a pair of bearings 6 on a head stand 9.

The take-up drive motor 2 rotates a pair of take-up rolls 8 in opposite directions by means of a take-up transmission mechanism 3 connected by a belt.

The entrance of the die 7 is located immediately after the batten part of the gear with batten 5, and the exit of the dice 7 is inserted just before the take-up roll 8.

A pair of cores inserted into the gear with a batten 5 pass through the center hole of the die 7 through two holes in the own plate.

At this time, the core pairs that have passed through the adjacent gears with gears 5 are twisted in opposite directions and pass through the die 7, but they are shaped so that they do not untwist, and form S or Z twists for the next pull. It is pulled out by a take-up roll 8.

After forming a twisted pair portion of a predetermined length in this manner, if the rotation of the head drive motor 1 is stopped, a parallel portion is naturally formed.

When the head drive motor 1 is rotated again, if it is rotated for a predetermined time in the opposite direction from the previous time, each twisted pair portion can be formed to have a twisted direction opposite to that of the previous time.

If the twisted pair wires made in this way are assembled and the parallel parts are pasted with tape or heated and fused, S-Z
A twisted blind cable is obtained.

This S-Z twisting machine has a compact structure as shown in the figure, and can operate with high efficiency to manufacture blind cables.

It is more preferable to use a stepping motor that rotates in the opposite direction at predetermined time intervals as the head drive motor 1.

The S-Z twisting machine of this embodiment has a gear train with gear plates that interlock and interlock with each other, and a pair of twisted cores that have passed through the plurality of plates, which are passed through a plurality of dies, and then pulled out with rolls to form the SZ. This method has the advantage of being able to continuously manufacture twisted blind cables with high efficiency, and the device has the advantage of being relatively compact and inexpensive.

FIG. 3 is a sectional view of an SZ twisting machine according to another embodiment of the present invention, in which the same parts as in FIG. 2 are given the same reference numerals.

The difference from FIG. 2 in this embodiment is that the die 7 is omitted and a take-up roll 8 is installed after the gear 5 with a batten.
The outlet of this gear 5 with a plate is located as close to the inlet of the take-up roll 8 as possible.

With this structure, the pair of cores 4 twisted together by the rotation of the gear 5 with planks are immediately pressed and formed by the take-up roll 8 to prevent untwisting. By doing this, it is possible to obtain a blind cable in which twisted portions and parallel portions are alternately formed.

The SZ twisting machine of this embodiment has the effect of being able to make a webbing cable with high efficiency through a simple process of passing the plurality of cores that have passed through a gear with a batten between take-up rolls. The mechanism has the advantage of being simple and inexpensive.

These embodiments use a head drive motor 1 and a take-up drive motor 2 separately as shown in FIG. 1, but if a coupling means such as a clutch mechanism is used, it is possible to use one motor as a power source. Can be configured at low cost.

In addition, although the interlocking of the twisted pair heads is configured by a gear mechanism, it is also possible to attach adjacent battens using a rotation transmission mechanism such as a chain, sprocket, or timing belt so that the members rotate in opposite directions. good.

The SZ twisting machine of the present invention has the advantage of being compact, high-performance, and inexpensively constructed.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an SZ twisting machine which is an embodiment of the present invention;
2 is a sectional view taken along the line XX in FIG. 1, and FIG. 3 is a sectional view of an SZ twisting machine according to another embodiment of the present invention. 1...Head drive motor, 2...Take-up drive motor, 4...Core, 5...Gear with plate, 7...Dice , 8...Re-roll.

Claims (1)

[Scope of Claims] A twisting head comprising a plurality of rotary members each having a batten for passing 11 pairs of cores arranged in a horizontal row so that adjacent rotary members can simultaneously rotate in opposite directions. , a pair of take-up rolls that vertically press and rotate the plurality of pairs of rows of cores that have passed through the twisting head;
An SZ twisting machine characterized by being equipped with a drive source that continuously rotates a pair of take-up rolls. 2. The SZ twisting machine according to claim 1, wherein the rotating member provided with the batten is a gear with a batten. 3. The SZ twisting machine according to claim 1, wherein the twisting head is a twisting head that is attached with a die that passes the core that has passed through the rotating member provided with the batten.