JPH0530003B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a reversal twisting device for a cable with alternatingly reversingly twisted strands, and more particularly, to a reversing twisting device for a cable with alternately reversingly twisted strands. This invention relates to a reversal twisting device that can easily change the left and right twisting angle.

[Prior Art] For example, communication cables that connect telephone offices require work such as branching out or inserting a relay amplifier in the middle of the connection line. When performing such work, the communication cable will be under considerable tension when taking out the pairs and ends of the electric wires at the above-mentioned branching and insertion points, so the internal core wires will be If there is no slack in the strands of strands or strands, the above-mentioned work will be extremely difficult.

Therefore, in the above-mentioned communication cable, slack is given to the group of wires in the core, and when the cable sheath is cut open, the strands become slack and can be taken out. twisted cables) are used.

In addition, there are so-called cables with shielded wires, which have a wrapping layer of metal wire such as copper wire or aluminum wire on the outside for electrical shielding, or cables with iron wire, which have a wrapping layer of iron wire on the outside for mechanical protection. In so-called armored iron wire cables, etc., the winding direction is reversed at arbitrary intervals to prevent buckling of the metal wire winding layer when the cable is bent.

By the way, in such a cable with alternately reversely twisted wire members, the number of turns of each reversely twisted portion cannot be set uniformly depending on the diameter and number of wire rods.

Therefore, it is desirable to change the number of turns of each of the reversely twisted portions. In order to meet this requirement, conventionally, a detection plate formed by being connected to an inversion bed etc. for twisting the filament, and two sensors to detect the rotation of this detection plate are provided, and each of these sensors is provided. The sensor is installed on a locus on an outer circle that has the same center point as the detection plate. Then, the angular position of the detection plate that rotates in conjunction with the rotation of the reversing head, etc. is detected by the two sensors described above, and based on the detection results, forward/reverse rotation control and stop control of the reversing head, etc. are performed. There is.

[Problems to be Solved by the Invention] In such a conventional reversal twisting device for cables with alternately reversely twisted wire members, each twist of the cable with alternately reversely twisted wire members is twisted based on the type of cable, etc. In order to change the number of times, after stopping the machine, remove the screws etc. that fix the sensor mentioned above, adjust the movement, and then fix the sensor again using a fixture etc.
This work is very complicated and requires the machine to be temporarily stopped, which significantly reduces productivity.

In addition, since two of the above-mentioned sensors are arranged on the same circumference of the detection plate, the setting of the reversal angle is as follows.
The range is limited to 180 degrees, and even if you use two detection plates and install a sensor on each, the range is limited to 360 degrees.

Therefore, since the detection accuracy is relatively rough, high-precision control cannot be achieved unless the braking characteristics of the brake for the reversing head etc. are good, and a sensor for setting the operation timing must be added, resulting in a complicated structure. This may lead to

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a reversal twisting device for a cable with slack, which can easily vary the number of times of reversal twisting of a cable with alternately reverse twisted wire bodies and can set the number of twists with high precision.

[Means and effects for solving the problems] In order to achieve the above-mentioned object, the present invention provides a reversal twisting device for a cable with alternately reverse twisted wire members for twisting and winding the wire members in a normal and reverse rectangular shape. ,
A reversing clutch that rotates the reversing bed in the forward and reverse directions for reversing the twisting of the filament, a brake for braking the reversing head, and a pulse signal that controls the direction and angle of rotation corresponding to the rotation of the reversing head. A rotation information detector detects the rotation information in correspondence with the number, and the output pulse signal of the rotation information detector is input to a forward twist setting device and a reverse twist setting device to generate control signals, and these control signals are This is a reversal twisting device for cables with alternately reverse twisted wire bodies, characterized in that the left and right twisting angles can be easily varied by outputting to a non-contact controller that controls the clutch and the non-contact controller that controls the brake. .

[Example] Fig. 1 is a perspective view showing an example of a reversal twisting device for a cable with alternately inverted twisted wire bodies, and Fig. 2 is a configuration diagram showing an example of a control section used in the device. be.

In FIG. 1, a cable 1 sent out from a not-shown sending out machine passes through the centers of a gathering plate 3, a guide tube 4, and a reversing head 5, and from the upstream side, a cable 1 with alternately reversed twisted shield wire is attached as a completed product. The cable is ready to be sent out. Then, each of the plurality of shield wires 2 forming the cable 1 passes through each eye hole 3a of the set batten 3, and from the circumferential surface of the guide tube 4,
Upon exiting the eye hole 5a of the reversing head 5, the cable is twisted back onto the cable surface alternately in clockwise and counterclockwise directions. Next, in order to prevent the untwisted cable from returning to its original state, the twisting device 7 feeds it to the twist opening of the taping device 8, and the pressing device 8 taps the untwisted cable alternately on the surface of the cable. Finally, as a finished product, a cable with alternately reverse twisted shielded wires is obtained, as indicated by reference numeral 1'.

In the reversing drive unit 6, as shown in FIG. 2, the rotation of the power source is first transmitted to the line shaft 9, and the rotation of the line shaft 9 is transmitted to the reversing clutch 11 by appropriate means. . The above-mentioned reversing head 5 is rotated via this reversing clutch 11. A brake 10 is provided on the reversing head 5 either directly or through an appropriate means, so that quick stop control can be performed. A pulse plate 12 for detecting the rotation angle is connected to a member synchronized with the rotation of the reversing head 5. This pulse plate 12 is formed with a plurality of slits that equally divide the circumference.
Two sensors 13 and 14 for detecting the presence or absence of the slit are arranged around the slit with an output phase difference of, for example, 90 degrees. This sensor 1
3 and 14 are each connected to a rotation information detector 15, and the rotation information detector 15 detects the pulse plate 1.
2 rotation direction information and rotation angle information (information on how many steps the pulse plate 12 has rotated) are detected, and only when the pulse plate 12 rotates in the normal direction and the shield wire is twisted in the normal direction to the cable. A pulse signal S1 is generated, and a pulse signal S2 is generated only when the pulse plate 12 is reversed to twist the shield wire against the cable in a reverse direction.
is generated. This rotation information detector 15
The output pulse signals S1 and S2 are input to a forward twist setting device 16 and a reverse twist setting device 17, respectively. This forward twist setting device 16
receives the pulse signal S1, counts the number of pulses of the pulse signal S1, displays the rotation angle corresponding to the rotation angle of the above-mentioned reversing head 5, and generates the control signal S3 and control signal S4, which will be described later. It is. Further, the above-mentioned reverse twist setting device 17 receives the pulse signal S2, counts the number of pulses of the same pulse signal S2, displays a rotation angle corresponding to the rotation angle of the above-mentioned reversing head 5, and also outputs a control signal to be described later. S5 and a control signal S4'.

Each of the forward twist setting device 16 and the reverse twist setting device 17 has a counter for clearing a count display on the opposite side when the rotation angle of the reversing head 5, which is rotated forward or reversed, reaches a predetermined value. It is designed to send out control signals. That is, when the forward twist setter 16 becomes a predetermined value, a control signal S6 is sent to the reverse twist setter 17, and conversely, when the reverse twist setter 17 becomes a predetermined value, the forward twist setter is activated. The control signal S7 is sent to the 16 side.

In addition, the control signal S3 from the normal twist setting device 16
The control signal S5 from the reverse twist setting device 17 is input to a non-contact type controller 18, and the output of the non-contact type controller 18 is supplied to the reverse clutch 11. On the other hand, normal twist setting device 1
6 and the control signal S4' from the reverse twist setting device 17 are output to a non-contact type controller 19 via a wired OR circuit, and the output of the non-contact type controller 19 is supplied to the brake 10. It is becoming more and more common.

Therefore, when the pulse plate 12 is rotated in the normal direction as the reversing head 5 is rotated in the normal direction, a pulse is generated in the pulse signal S1 output from the rotation information detector 15.
The normal rotation twist setting device 16 counts the number of pulses and sequentially displays the rotation angle of the reversing head 5 based on the result. And the same reversal head 5
When the rotation reaches the first set value, the control signal S3 from the normal rotation twist setting device 16 turns off the non-contact type controller 18, thereby disengaging the driving clutch of the reversing clutch 11. After that, when the second set value is reached, the non-contact controller 19 is activated by the control signal S4.
is turned on, the brake 10 is activated, and the brake gear is applied. After several tens of milliseconds after such braking,
The control signal S4 turns off the non-contact type controller 19 and releases the brake 10.

At the same time, the non-contact type controller 18 is turned on by the control signal S4' from the reverse twist setting device 17, and the reverse clutch 11, which had been driven until just before, is reversed. be done.

By repeating this operation, a cable with alternately reverse twisted shielded wires is produced.

Here, when changing the number of turns of each reverse twist in a cable with alternately reverse twist shielded wire, simply change the respective setting values of the forward twist setting device 16 and the reverse twist setting device 17,
The generation timings of various control signals sent from each of the set twist setting device 16 and the reverse twist setting device 17 are changed, and as a result, the length of the reverse twist of the cable with the alternately reverse twist shielded wire can be changed. That is, if the number of settings in the forward twist setting device 16 and the reverse twist setting device 17 is set to a large number, the pulse plate 12 will be rotated until the number of pulses of the pulse signal S1 and the pulse signal S2 increases. Accordingly, the above-mentioned reversing head 5 can be rotated more. Moreover, this rotation is not limited to one rotation or less as in the conventional case, but it goes without saying that it may be multiple rotations.

On the other hand, contrary to the above, if the setting values of the forward twist setting device 16 and the reverse twist setting device 17 are set to a small value,
In the same manner as described above, it is possible to shorten each rotation of the reverse twist of the alternately reverse twist shielded wire cable.

And, due to the twisted nature of the cable itself,
When the forward rotation and reverse rotation were set to be the same, the twist of the filament on the left and right sides was not the same, but the forward rotation twist setting device 16 and the reverse rotation twist setting device 17 can be used to Since the reversal can be set separately, uniform correction can be easily performed taking into account twisting and the like due to twisting of the cable itself.

Incidentally, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments.
The rotation angle detection means consisting of a combination of 3 and 14 is
It may also be an embodiment using a normal rotary encoder. In this case, the configuration can be simplified. Further, the above-mentioned sensors 13 and 14 may be one, and in this case, the reversing clutch 1
Using one sensor in synchronization with the operation of the reversing clutch 11, a signal based on the operation of the reversing clutch 11 and a signal from the one sensor are subjected to AND logic processing to create a forward twist setting device 16 and a reverse twist setting device 17. If the rotation information detector 15 is inputted, it can be used as a substitute for the simple rotation information detector 15.

[Effects of the Invention] As described above, according to the present invention, like the conventional reversal twisting device for cables with alternately reverse twisted wire bodies, after the machine is temporarily stopped, the screws etc. fixing the sensor are removed. Since it is not necessary to fix the sensor again using a fixing tool after adjusting the movement, productivity can be significantly increased.

Furthermore, in order to change the number of reverse twists of a cable with alternately reverse twisted wire bodies, it is only necessary to change the set number, so the number of reverse twists of the same cable can be changed very easily.

Furthermore, since the detection accuracy is very high, high-precision control can be obtained without making the braking characteristics of the brake for the reversing head or the like very good.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a reverse twisting device for a cable with alternately reverse twisted wire bodies according to the present invention;
FIG. 2 is a schematic diagram showing an example of a control means for the cable reversal twisting device shown in FIG. 1 above. 1... Cable, 2... Shield wire (wire body), 5... Reversing head, 10... Brake, 1
1... Reversing clutch, 15... Rotation information detector,
{16...forward twist setting device, 17...reverse twist setting device, 18...non-contact type controller, 19... non-contact type controller} (brake/reverse clutch control means).

Claims (1)

[Scope of Claims] 1. In a reversing twisting device for a cable with an alternatingly inversely twisted filament body for twisting and winding filaments in forward and reverse directions, a reversing head for twisting the filament bodies in reverse directions is rotated in the forward and reverse directions. the reversing clutch, a brake for braking the reversing head, and a rotation information detector for detecting the rotation direction and rotation angle corresponding to the rotation of the reversing bed in correspondence with the number of pulse signals; The output pulse signal of the rotation information detector is input to the forward twist setting device and the reverse twist setting device to generate control signals, and these control signals are used to control the non-contact type controller that controls the above-mentioned reversing clutch and the above-mentioned brake. A reversal twisting device for cables with alternating reversal twisted wire bodies, characterized in that the left and right twisting angles can be easily varied by outputting the output to a non-contact type controller.