JPH0713353B2 - Wire body twisting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement in a linear body twisting device such as a collective twisting device for electric cable cores.

[Conventional technology]

FIG. 3 shows an example of a conventional take-up rotary type twisting device for electric cable cores. In this twisting machine, the feeding bobbins 1a, 1a of the respective feeding machines 1, 1 are fed out. The cores 2, 2 are gathered by the gathering die 4 through the gathering plate 3, and are taken up by the gathered take-up machine 6 and wound by the take-up machine 7, which are composed of the take-up machine 6 and the take-up machine 7. By rotating the rotary twisting machine 5 driven by the motor 10, the predetermined twisted cable 8 is taken up and wound up.

By the way, in the case where the collective twisting of the core is performed as described above, a twist based on the rotation twist occurs in the core,
Because the twisted cable 8 strain remains due to the twist, the respective sending machines 1 and the rotary twisting machines 5 preliminarily installed for the number of the planned cores are linked by the common power transmission line shaft 9. By rotating the line shaft 9 by the drive motor 10, the rotary twisting machine 5 and the respective sending machines 1 are synchronously driven to rotate, and the cores sent out from the sending machine are based on the collective twist. It has been devised to prevent twisting and to prevent residual strain after twisting.

Further, a method has also been proposed in which an analog signal is obtained by a generator or the like by rotation of the main body of the rotary twisting machine and is synchronized with the analog signal to generate rotation of the sending machine.

[Problems to be Solved by the Invention]

When the rotary twisting machine and each sending machine are mechanically interlocked with each other on the line shaft as described above, when adding or reducing the sending machine according to the need to increase or decrease the number of cores Requires a large-scale modification including the interlocking mechanism of the line shaft 9.

Further, in order to synchronize the rotation of the sending machine and the rotary twisting machine with mechanical power, since the sending machine and the rotary twisting machine are connected to each other by the line shaft, the positional relationship between them is restricted, You will be limited by the installation location.

Some feeders and line shafts are linked through a coupling device such as a clutch so that the connected state can be interrupted, but when not in use, a considerable mechanical portion is rotationally driven. It was necessary, and the loss of energy such as electric power required for driving was large.

On the other hand, the drive method using an analog signal, which has been proposed to be electrically linked, cannot avoid the occurrence of a minute error per one rotation of the device, and accumulates such a minute error during long-term operation. However, the core is twisted, and as a result, the cable tends to have residual strain.

In view of the above-mentioned problems of the prior art, the present invention is capable of reliably preventing twisting of a delivery linear body and performing predetermined collective twisting, and also a plurality of delivery machines winding the linear body. It is an object of the present invention to provide a seed wire twisting device that can easily increase or decrease the number of wires.

[Problems and actions to be solved by the invention]

In order to achieve such an object, the apparatus for twisting a linear body of the present invention, as shown in FIGS. 1 and 2, includes a bobbin 11a and a delivery linear body 12 wound around the bobbin. Linear body twisting provided with a plurality of twisting-out feeders 11 each having a guide 20 for pulling out in a direction, and a rotary twisting machine 15 that collectively twists and winds a plurality of linear bodies fed from the respective feeders. A rotating device around the axis of each twist-back feeding machine 11 and a rotating part of the rotary twisting machine, which is provided so as to generate a pulse signal in accordance with each rotation thereof. The pulse generators 21 and 22 and the pulse signal P ₁ from the pulse generator 22 on the rotary twisting machine side and the pulse signal P ₂ from the pulse generator 21 on each sending machine side are respectively captured and compared and calculated. Calculation to process and output the predetermined speed increase / decrease signal N _a A control unit 23, the increase and decrease speed signal N _a rotational speed signal N ₃ which is set to the synchronization of the rotational speed N ₁ of the rotational speed N ₂ of the feed-side rotating stranding machine based on of the device A speed controller 24 for inputting to the bobbin driving motor 110 of each of the feeding machines is provided.

Among the above-mentioned means, the feeder 11 with a twist back is a bobbin.
The feed-out linear body wound around 11a is one in which a twist of one rotation is added for each winding by being pulled out in the axial direction of the bobbin, and in that case, the linear body wound around the bobbin is As a specific means for pulling out the bobbin in the axial direction, a guide 20 called a spin is used in a feeder frame on which the bobbin is mounted so that the linear body is not subjected to resistance when it is fed out.

Here, the basic concept of the present invention will be described with respect to the twist-spinning of the core linear body in the collective twisting and twisting back of the linear body.

First, in the rotating direction of each means, the rotary twisting machine sends out the twisting machine as a direction to return the twist generated in the twisted linear body in the rotary twisting machine consisting of the take-up machine and the winder behind the collecting die. When viewed clockwise from the side, the rotation of the guide of the feeder with twisting back is counterclockwise when viewed in opposition to the core withdrawal direction of the feeder, and the winder of the rotary twisting machine is counterclockwise, When the sending machine is clockwise, it is positive, and vice versa, that is, when the twisting is further added to the core by the rotation of the guide in the sending machine, when the rotary twisting machine is clockwise when viewed from the sending machine side, When the rotation of the guide is negative when viewed clockwise from the opposite direction of the pulling out direction, the positive condition is satisfied as the rotation direction.

Here, the pulse generated from the pulse generating mechanism by the rotation of the rotary twisting machine is P ₁ (pulse / rotation), the pulse generated from the pulse generating mechanism by the rotation of the feeding machine is P ₂ (pulse / rotation), and , N ₃ (rpm) is the compensation rotation required to drive the bobbin of the sending machine, P _{ich is the} twisting pitch that is the length when the twisted linear body is pulled out when the rotary twisting machine makes one rotation, and the linear The winding diameter of the linear body of the bobbin that becomes smaller as the body is fed out is set to D ₁ , and the twisting rate (the ratio of the required core length to the completed length in the strip length when the twisting of the twisted linear body is completed) is η. Then, satisfying the following relational expression makes it possible to make the number of twists of the linear body due to the rotation of the rotary twisting machine and the rotation of the guide of the feeding machine with twisting back equal, and to obtain a twisted linear body without residual strain. It is indispensable for obtaining.

In the above formula (2), the winding diameter D ₁ of the linear body in the bobbin usually becomes smaller as the feeding operation progresses. Therefore, if the pulse P ₁ associated with the rotation of the rotary twisting machine is constantly generated, the compensation rotation N _{3 of the} bobbin must be made smaller together with the linear body winding diameter D ₁ .

As the actual control, by comparing and calculating the rotation N ₁ of the rotary twisting machine 15 and the rotation N ₂ of the guide 20 of the sending machine 11,
The compensation rotation N ₃ is determined. If this is expressed by an equation, it is as follows.

In the present invention, the pulse signal P ₁ generated in accordance with the rotation of the rotary twisting machine 15 and the pulse signal P ₂ generated in accordance with the rotation of the guide 20 of the sending machine 11, are taken into the arithmetic processing device 23, and The rotation N ₁ of the rotary twisting machine and the rotation N ₂ of the guide of the feeding machine are replaced by comparison calculation processing, and the increase / decrease speed signal N _a set as a result of the calculation processing is used by the speed controller.
Enter in 24. In this case, when a pulse P ₂ of a feeder 11 is different from the pulse P ₁ of the rotating twisted machine 15 takes in the increase and decrease speed signal N _a as described below, feed the rotational speed signal N ₃ each, which is set on the basis thereof It is input to the drive motor (variable speed motor) of the machine 11, and thereby the rotation N ₂ of the guide of the sending machine and the rotation N ₁ of the rotary twisting machine are synchronized.

P ₁ -P ₂ > 0 → Command to accelerate from N ₂ .

Command deceleration from P ₁ -P ₂ <0 → N ₂ .

By performing pulse calculation and sending back the speed command to the sending machine, the synchronization deviation between the rotation N ₁ of the rotary twisting machine and the rotation N ₂ of the guide of the sending machine can be performed even during long and long twisting work. Therefore, the twisting due to the rotation and twisting with respect to the sending-out linear body is prevented.

Since such control to each sending machine is performed individually, and they can be performed through the wiring for signal transmission, each sending machine can be individually separated or attached, in other words, increase or decrease of plural sending machines. The change can be easily carried out without carrying out large-scale disassembly.

〔Example〕

FIG. 1 shows an example of a device for twisting a linear body twisting device according to the present invention as a device for twisting an electric cable core, and FIG. 2 specifically shows a feeder of the device. In this example,
Since the target is an electric cable core, the above-mentioned “linear body” will be described as “cable core” or “core”.

Each of the feeding machines 11, 11 ... Has a carriage 27 equipped with wheels 26, which makes it movable. The trolley 27 has a built-in drive motor 110 composed of a variable speed motor and a transmission 111 that works in conjunction with the drive motor 110 via a coupling or the like. Further, a turntable and a drive shaft 28 from its center are provided on the upper surface. It is pivoted so as to project. The turntable and drive shaft 28 are rotationally driven by the transmission 11 to transmit the compensation rotation by the motor 110.

The bobbin 11a around which the cable core 12 is wound is rotatably supported by the drive shaft 28 on the carriage 27, the frame 29, and the brake plate.
It is pressed by a spring 31 through 30, and is rotated together with the cable core feeding on the turntable. Further, the frame 29 is pressed by the brake plate 30 by the pressing of the spring 31, so that the frame 29 rotates together with the shaft, and a guide 20 constituted by a roller or the like is provided at the rotating edge portion thereof. The arm portion of the stand 32 attached to the carriage 27 is provided with a feeding guide 33 attached on an extension of the axis of the shaft 28.

Then, the cable core 12 wound around the bobbin 11a is wound around the guide 20 as a spin and turned, and further fed out through the feeding guide 33, and is twisted by being fed out through the guide 20. is there.

The cable cores 12, 12 ... Sent from the respective sending machines 11, 11 ... As described above are gathered by the gathering die 14 via the gathering plate 13, and are then twisted in a predetermined twisting manner by the rotary twisting device 15. It will be manufactured as a cable 18.

The rotary twisting device 15 includes a take-up machine 16 such as an endless track device and a take-up machine 17 mounted on the rotary frame 15a, which are driven to rotate in cooperation with the main motor 100 by a transmission mechanism such as a gear. It is done. Therefore, the assembly dice 14
The cable core passing through is twisted by the take-up of the take-up machine 16 and the rotational drive of the take-up machine 17 and it is manufactured as a predetermined twisted cable 18, and is wound up by the take-up machine 17.

In this embodiment, the rotation direction of the guide 20 as the delivery spin is set as follows. That is, the guide 20 when the twisting direction of the core 12 that is twisted by the rotation of the rotary twisting device 15 is returned, that is, when the rotary twisting machine 15 is clockwise (see N ₁ ) when viewed from the sending machine 11 side. Rotation is counterclockwise when viewed from above (see N ₂ )
When is counterclockwise, the rotation of the feeder side is set to be clockwise.

Now, with respect to the twisting device configured as described above,
In the present invention, the reflector 21a is attached to the peripheral portion of the frame 29, which is the rotating portion around the axis of the feeder 11, and the photoelectric switch 21b is attached to the reflector 32a in the stand 32 at the passing position. The reflector 21a and the photoelectric tube switch 21b form a pulse generator 21 on the side of the sending machine.

Further, also in the frame 15a, which is the rotating part of the rotary twisting machine 15, the reflecting plate 22a is attached, and the photoelectric tube switch 22b is arranged at a position where this reflecting plate passes, and these reflecting plate 22a and photoelectric switch 22b are provided. Has constructed a pulse generation mechanism on the rotary twisting machine side.

A limit switch system can be adopted instead of the above-mentioned photoelectric tube switch system. In the case of the limit switch method, by forming a convex part that hits the contact of the limit switch on the rotating part, the limit switch is intermittently closed or opened by the rotation of the rotating part, and the signal obtained during that operation is used as a pulse signal. You can use it.

In the case of the photoelectric tube switch system, the switching obtained when the reflectors 21a and 22a attached to the rotating portion pass through the light projecting portions of the photoelectric tube switches 21b and 22b may be used as the pulse signal.

The pulse generation mechanism 21, 21 ... of each sending machine 11, 11 ... and the panness generation mechanism 22 of the rotary twisting machine 15 are the photoelectric tube switch 21.
Electrically connected to the arithmetic processing unit 23 through the wiring from a, 22a, so that the pulse P ₁ generated on the side of the rotary twisting machine 15 and the pulse P ₂ , P generated on the side of each sending machine 11, 11 ... It is designed so that ₂ ...

The arithmetic processing unit 23 performs comparative arithmetic processing on the respectively-acquired pulses P ₁ and P _2, and for example, an electronic counter with an addition / subtraction function is used.

Is processed by such a processing unit 23, which increases or decreases the speed signal N _a output by is input to the speed controller 24.

Speed controller 24, fetches an increase or decrease speed signal N _a as described above, have incorporated the rotational speed N ₁ of the rotating twisted machine 15 as electric signals through the tuning amplifier 25.

From the speed controller 24, a signal as the compensation rotation N ₃ is output, and each of the sending machines 11, 11 ...
Input to the drive motor 110, which is the variable speed motor of.

The signal processing in the speed controller 24 is performed by the rotary twisting machine.
The rotation N ₁ of 15 is input as an electric signal through the tuning amplifier 25, and the main control signal of the rotation N ₃ of the drive motor 110 of the sending machine 11 is output. Further, the pulse P ₁ generated by the rotation of the rotary twisting machine 15 and the guide of the sending machine 11
And decrease speed signal N _a obtained as a result of the arithmetic processing fetches a pulse P ₂ generated by the rotation of 20, the tuning amplifier
The signal as N ₁ from 25 is input to output a signal as an increase / decrease speed synchronized with the rotation N ₁ of the rotary twisting machine 15, and this is input to the drive motor 110 as a compensation rotation N ₃ .

Next, a related operation of the rotary twisting device having the above mechanism and control means will be described.

First, the pulse P ₁ generated by the rotation of the rotary twisting machine 15 is
When the twisting machine makes one revolution, one pulse is generated. In the take-up machine 16 of the rotary twisting machine 15, the take-up is started at the ratio of P ₁ × η × P _ich .

Due to this take-up, the core 12 is fed from the feeder 11 by P ₁ ×
P _ich × twist ratio is extracted, and the rotation of the guide 20 as a spin is also The core rotates by the number of revolutions calculated by the formula, and twist in the direction of rotation is added to the core.

At that stage, the pulse P ₂ generated with the rotation of the guide 20
The inputs with the generated pulse P ₁ of the rotating twisted machine 15 side to the arithmetic processing unit 23, and outputs the decrease speed signal N _a as acceleration and deceleration, which enter the speed coin Controller 24, the controller 24 Based on the signal output from the drive motor 110, the drive motor 110 of each of the feeding machines 11 is caused to perform the compensation rotation N ₃ .

Determining condition of acceleration and deceleration of such compensation rotational N ₃ becomes _{P 1 -P 2> 0 → N} 3 -acceleration command _{P 1 -P 2 <0 → N} 3 deceleration command.

That is, it operates so as to control N ₃ in the direction in which P ₁ −P ₂ is always zero.

Here, the core winding diameter of the delivery bobbin 11a decreases with the twisting work, and N ₃ changes with it, but as a result, as described above, based on the comparison calculation process of the pulse P ₁ P _2. It is automatically corrected.

Incidentally, the electrical wiring between the respective means is very easy to separate and re-connect by performing it through a dedicated outlet, and by using this to move the carriage 27, the sending machine 11 can be quickly and relocated. Easy to do.

According to the basic idea of the present invention, theoretically, the compensation rotation
It is possible to deal with the twisting pitch (P _ich ) by rotating N ₃ in the minus direction, but in practice it is easier to implement by limiting the formula (4) below due to control. You can

P _ich ≤ π × D _d ………… (4) where D _d is the diameter of the delivery bobbin.

The reason for doing the above is that when the twisting pitch exceeds a certain range, the rotation N ₃ of the sending machine 11 side is a positive rotation when it starts, but as the work progresses, it shifts from the stopped state to a negative rotation. This is because the rotation control becomes complicated.

In addition, according to the present embodiment, since the rotation direction of the bobbin in each of the delivery machines rotates in the same direction as the shaft which is mechanically balanced, vibration is caused by centrifugal force or the like even if the turntable is rotated at high speed. There is no fear, in other words, there is an advantage that high-speed movement is possible, the device itself can be simplified, and the drive motor can be downsized.

Further, in a feeder that draws a core wound on a bobbin in the axial direction of the bobbin and gives a twist back, in order to give a twist back to eliminate residual stress of the core against twisting, in the case of controlling by a mechanical interlocking method, Although the manufacturing cost is complicated, the present embodiment has an advantage that the manufacturing cost can be reduced by simplifying as described above.

The present invention is not limited to the above embodiments, and may be modified and applied within the scope of the technical idea of the present invention.

For example, by changing the bobbin set method to
Twist can be added.

That is, when the rotation direction of the rotary twisting machine is set to be clockwise when viewed from the sending machine side, and the rotation direction of the guide of one of the sending machines is set to be clockwise when viewed from above,
Two twists are added to the core. That is, the gathering work can be performed while the cores are twisted together, and the gathering work can be performed while twisting the cores by winding two cores together. In addition, the twist pitch at this time
By changing the generation ratio of P ₁ and P ₂ , it becomes possible to arbitrarily select.

Further, according to the technical idea of the present invention, it is applied to a winding machine of a twisting machine called a single twist buncher,
It can also be adopted as a means for determining the twist pitch.

〔The invention's effect〕

As is clear from the above description, according to the linear body twisting device of the present invention, an electric system is provided as a control means for the synchronous rotation with the rotary twisting machine main body with respect to each feeder. (Signal) is used, so compared to the conventional mechanical interlocking system with a rotary twisting machine such as a line shaft, not only can the device be simplified, but the mechanical The problem of the restriction on the position of each sending machine due to the connection is eliminated, and each sending machine can be arbitrarily increased or decreased.

Further, as a control signal for preventing twisting of the linear body given to the twisting guide of each feeder, a pulse signal obtained based on rotation of the rotary twisting machine and a control signal obtained based on rotation of the guide are obtained. Since the pulse signal to be processed is used as a signal to be processed and a signal for compensating rotation is given to the sending machine, it is affected by the rotation error that is often seen in the conventional control method in which an analog signal is a processed signal. Without this, accurate control can be performed, and twisting of the linear body can be reliably prevented.

Therefore, it is possible to surely prevent the twisting of the feed-out linear body and perform a predetermined twisting and twisting, and also to easily increase or decrease the plurality of feeding machines that wind the linear body. The intended purpose of providing a seed wire twisting device is fully achieved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a linear body twisting device according to the present invention, and FIG. 2 is an explanatory view showing a feeder of a body device,
FIG. 3 is an explanatory view showing an example of a conventional linear body twisting device. In the code, 11 is a sending machine, 11a is a bobbin, 12 is a sending wire (cable core), 13 is a collecting plate, 14 is a collecting die, 15 is a rotary twisting machine, 16 is a take-up machine, and 17 is a take-up machine. , 18
Is a twisted wire (twisted cable), 20,33 is a guide, 21,22
Is a pulse generation mechanism, 23 is an arithmetic processing unit, 24 is a speed controller, and 25 is a tuning amplifier.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Shiro Kanaga 5-1-1 Hidaka-cho, Hitachi-shi, Ibaraki Hitachi Cable Co., Ltd. Hidaka factory (56) Reference JP-A-63-295782 (JP, A) Actual opening Sho 59-18655 (JP, U) Actual opening Sho 60-94884 (JP, U)

Claims (1)

[Claims] 1. A plurality of twisting-out feeders each having a bobbin and a guide for pulling out a sending-out linear body wound on the bobbin in the axial direction of the bobbin, and a plurality of linears sent out from the respective sending-out machines. A linear body twisting apparatus comprising a rotary twisting machine for collectively twisting and winding a body, wherein the rotary section around the axis of each of the above-mentioned twisting and feeding machines and the rotary section of the rotary twisting machine. , A pulse generating mechanism equipped to generate a pulse signal according to each rotation of them, a pulse signal from the pulse generating mechanism of the rotary twisting machine side, and a pulse from the pulse generating mechanism of each sending machine side. An arithmetic and control unit that respectively takes in signals and performs comparative arithmetic processing on them to output a predetermined increase / decrease speed signal, and the rotation speed of the sending machine side and the rotation of the rotary twisting machine based on the increase / decrease speed signal of the device. Linear body twisted device, characterized in that a rotational speed signal which is set in order to tune the degrees are and a speed controller for inputting the bobbin drive motor of each of a feeder.