JP5830824B2 - Ring concentric stranded cord manufacturing equipment - Google Patents

Description

  The present invention relates to an apparatus for manufacturing an annular concentric stranded cord.

A manufacturing method and a manufacturing apparatus for obtaining an annular concentric stranded cord by spirally winding a side wire around an annular core are known in Patent Document 1.
In the manufacturing apparatus described in Patent Document 1, the annular core is rotated by two pinch rollers.

Japanese Patent No. 3657599

  By the way, in the manufacturing apparatus of Patent Document 1, when the side wire is wound around the annular core, the apparent outer diameter of the annular core (the outer diameter of the annular body composed of the annular core and the side wire) is increased by the amount of the side wire. Become. For this reason, the rotational speed of the annular core is increased, the winding pitch of the side wire to the annular core is changed, and the winding accuracy may be lowered.

  Then, an object of this invention is to provide the manufacturing apparatus of the cyclic | annular concentric twisted cord with the high winding precision around the cyclic | annular core of a side wire.

An apparatus for manufacturing an annular concentric stranded cord according to the present invention that can solve the above-mentioned problems is a core rotation mechanism that rotates an annular core in the circumferential direction;
A first cassette moving mechanism for moving the cassette containing the side wire to the outside and inside of the ring of the annular core;
Moving the cassette from one side to the other side of the rotation axis of the annular core inside the ring of the annular core, and moving the cassette from the other side of the rotation axis of the ring core to the one side outside the ring of the annular core; A second cassette moving mechanism,
An annular concentric twisted cord is manufactured by moving the cassette to the inside and the outside of a ring of an annular core rotating in the circumferential direction, and spirally winding a side wire drawn from the cassette around the annular core. A cord manufacturing apparatus,
When winding the side wire for one layer around the outer periphery of the annular core, the side wire in the final circumference is arranged in the gap between the side wire wound just before and the side wire wound around the first turn. As the number of wraps around the annular core increases, a speed adjusting unit is provided that decreases the rotational speed of the core rotating mechanism or increases the moving speed of the cassette by the first cassette moving mechanism.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing apparatus of the cyclic | annular concentric stranding cord with the high winding precision to the cyclic | annular core of a side wire is provided.

It is a front view of the manufacturing apparatus of the annular concentric stranded cord concerning the embodiment of the present invention. It is a top view of the manufacturing apparatus shown in FIG. It is a schematic diagram which shows the manufacturing process of the cyclic | annular concentric twisted cord by the manufacturing apparatus shown in FIG. It is sectional drawing which shows a mode that the side wire in a pinch roller part advances. It is a block diagram of a control part.

<Description of Embodiment of Present Invention>
First, the contents of the embodiments of the present invention will be listed and described.
The embodiment of the present invention is
(1) a core rotation mechanism for rotating the annular core in the circumferential direction;
A first cassette moving mechanism for moving the cassette containing the side wire to the outside and inside of the ring of the annular core;
Moving the cassette from one side to the other side of the rotation axis of the annular core inside the ring of the annular core, and moving the cassette from the other side of the rotation axis of the ring core to the one side outside the ring of the annular core; A second cassette moving mechanism,
An annular concentric twisted cord is manufactured by moving the cassette to the inside and the outside of a ring of an annular core rotating in the circumferential direction, and spirally winding a side wire drawn from the cassette around the annular core. A cord manufacturing apparatus,
When winding the side wire for one layer around the outer periphery of the annular core, the side wire in the final circumference is arranged in the gap between the side wire wound just before and the side wire wound around the first turn. As the number of windings of the annular core increases, the rotational speed of the core rotating mechanism is decreased, or the moving speed of the cassette by the first cassette moving mechanism is increased, and the annular concentric twisting is provided with a speed adjusting unit. This is a cord manufacturing apparatus.

According to the manufacturing apparatus according to the present embodiment, the speed adjusting unit lowers the rotational speed of the core rotating mechanism as the number of turns of the winding of the side wire to the annular core increases, so that the annular core is always kept at a constant rotational speed. An annular concentric stranded cord that can be rotated and has high winding accuracy can be manufactured.
Alternatively, the speed adjusting unit increases the moving speed of the cassette by the first cassette moving mechanism as the number of turns of the winding of the side wire to the annular core increases, so that the moving speed of the cassette matches the increased rotating speed of the annular core. An annular concentric stranded cord with high winding accuracy can be manufactured.

(2) provided with a counter for counting the number of reciprocations between the outer side and the inner side of the ring of the annular core of the cassette by the first cassette moving mechanism;
The speed adjusting unit may control the core rotating mechanism or the first cassette moving mechanism according to the output of the counter that increases as the number of turns of the winding of the side wire to the annular core increases.
According to the manufacturing apparatus according to the present embodiment, the number of windings of the side wire can be obtained with a simple means of counting the number of reciprocations of the cassette.

<Overall structure>
Hereinafter, an apparatus for manufacturing an annular concentric stranded cord according to an embodiment of the present invention (hereinafter simply referred to as a manufacturing apparatus) will be described with reference to the drawings.
FIG. 1 is a front view of a manufacturing apparatus according to this embodiment.
As shown in FIG. 1, the manufacturing apparatus according to the present embodiment includes a core rotating mechanism 10 that rotates the annular core 1 in the circumferential direction, a first cassette moving mechanism 20, a second cassette moving mechanism 30, and a side wire. 2 and a cassette 50 accommodating 2.

(Core rotation mechanism)
The core rotation mechanism 10 rotates the annular core 1 in a posture in which the central axis B of the annular annular core 1 faces the horizontal direction. That is, the annular core 1 is rotated in the circumferential direction counterclockwise around the rotation axis B in a posture that forms a ring in a front view as shown in FIG. The core rotation mechanism 10 includes a housing 11, a clamp portion 12, two pairs of pinch roller portions 13 and 14, and a pressing roller 15.

  The clamp unit 12 is attached to the housing 11. The clamp part 12 contacts the annular core 1 at the highest position of the annular core 1, and the clamp part 12 is provided with two rollers 12a and 12b arranged so that the rotation axis faces the vertical direction and faces each other. Yes. The annular core 1 and the side wire 2 are inserted between the rollers 12 a and 12 b, and the side wire 2 drawn from the cassette 50 joins the annular core 1. In the following description, the point where the clamp portion 12 contacts the annular core 1 and the side wire is referred to as a winding point A.

  The pinch roller portions 13 and 14 are rotatably attached to the housing 11 at positions separated from each other. The pinch roller portions 13 and 14 include inner rollers 13a and 14a and outer rollers 13b and 14b, respectively. The inner rollers 13 a and 14 a are driven by a roller drive motor 18. The inner rollers 13a and 14a contact the annular core 1 and the side wire 2 to rotate the annular core 1 and the side wire 2. The outer rollers 13b and 14b are in contact with the annular core 1 and the side wire 2 and are rotated as the annular core 1 and the side wire 2 are rotated. The operation of the roller drive motor 18 is controlled by the control unit 19.

  An arm 16 is rotatably attached to the housing 11. A presser roller 15 is rotatably attached to one end of the arm 16. The other end of the arm 16 is supported by the housing 11 via a spring 17. The presser roller 15 contacts the annular core 1 below the lower pinch roller portion 14. The presser roller 15 suppresses shaking of the annular core 1 that occurs during rotation.

(First cassette moving mechanism)
As shown in FIG. 1, the first cassette moving mechanism 20 includes a link mechanism 21, a moving mechanism drive motor 22 connected to one side of the link mechanism 21, a guide rail 26, and the other side of the link mechanism 21. The cassette connecting portion 23 is fixed. As the motor 23 rotates, the other side of the link mechanism 21 moves linearly in the left-right direction, and the cassette connecting portion 23 is moved to the outside and inside of the ring of the annular core 1 in a front view.

  Counters 25 are attached to both ends of the guide rail 26. The counter 25 can be, for example, a magnetic or photoelectric proximity sensor that outputs a signal in response to the approach of the cassette support 23. With this counter 25, the number of reciprocations between the outer side and the inner side of the ring of the annular core 1 of the cassette 50 by the first cassette moving mechanism 20 can be grasped. The output of the counter 25 is input to the control unit 19.

(Second cassette moving mechanism)
As shown in FIG. 1, the second cassette moving mechanism 30 is provided on the upper portion of the cassette connecting portion 23.
FIG. 2 is a top view of the manufacturing apparatus shown in FIG. As shown in FIG. 2, the cassette connecting portion 23 is provided on one side and the other side of the rotation axis B of the annular core 1 with respect to the rotation surface C of the annular core 1. Each of the pair of cassette connecting portions 23 is provided with a second cassette moving mechanism. The second cassette moving mechanism 30 moves the cassette 50 with respect to the rotation surface C of the annular core 1 from one side to the other side in the direction of the rotation axis B of the annular core 1 and from the other side to the one side. The second cassette moving mechanism 30 is provided with pins 24 protruding from each other. With this pin 24, the cassette 50 is supported so as not to rotate relative to the second cassette moving mechanism 30.

(cassette)
As shown in FIG. 1, the cassette 50 is provided on the outer periphery of the reel 51 around which the side wire 2 is wound, the case 52 that houses the reel 51 and covers the outer periphery of the side wire 2, and the case 52. The guide block 53 is provided. The guide block 53 is provided with a guide portion 53a, and the side wire 2 wound around the reel 51 is guided by the guide portion 53a and pulled out to the annular core 1 side. In the present embodiment, the guide portion 53a is formed as a through hole.

  A slit 54 is provided in a part of the outer peripheral surface of the case 52. The side wire 2 extending from the reel 51 toward the guide portion 53a passes through the slit 54.

(Operation of manufacturing equipment)
In the manufacturing apparatus configured as described above, the cassette 50 is moved inside and outside the ring of the annular core 1 rotating in the circumferential direction, and the side wire 2 drawn from the cassette 50 is spirally formed in the annular core 1. To produce an annular concentric stranded wire cord. This will be described in detail below.

Drawing 3 is a mimetic diagram showing the manufacturing process of the annular concentric twisted cord by the manufacturing device concerning this embodiment.
First, in the state of FIG. 3A, the cassette 50 is located on one side of the rotation surface C of the annular core 1 outside the ring of the annular core 1. At this time, the side wire 2 runs along the outer periphery of the annular core 1 at the clamp portion 12. The side wire 2 is pulled out from the cassette 50 with the rotation of the annular core 1 by the rotating roller of the clamp portion 12 and pulled toward the annular core 1 side.

  From the state of FIG. 3A, the cassette 50 is moved inside the ring of the annular core 1 by the first cassette moving mechanism 20 while the annular core 1 is rotated in the circumferential direction by the pinch roller portions 13 and 14. As a result, the state shown in FIG.

  3B, the cassette 50 is moved to the other side of the rotation surface C of the annular core 1 by the second cassette moving mechanism 20 while rotating the annular core 1 in the circumferential direction. As a result, the state shown in FIG. Then, in the clamp part 12, the side wire 2 is wound spirally by the half circumference of the annular core 1.

  Then, from the state shown in FIG. 3C, the first cassette moving mechanism 20 moves the cassette 50 to the outside of the ring of the annular core 1 while rotating the annular core 1 in the circumferential direction. As a result, the state shown in FIG.

  3D, the cassette 50 is moved to one side of the rotation surface C of the annular core 1 by the second cassette moving mechanism 20 while rotating the annular core 1 in the circumferential direction. As a result, the state shown in FIG. Then, in the clamp part 12, the side wire 2 is further wound spirally for half the circumference of the annular core 1. As a result, the side wire 2 goes around the annular core 1.

  When the cassette 50 is moved while rotating the annular core 1 by repeating the steps (a) to (d) in FIG. 3, the side wire is wound around the outer periphery of the annular core 1 in a spiral shape. In some cases, by repeating the steps (a) to (d) in FIG. 3 in the reverse direction, the twisting direction is reverse to the twisting direction obtained by repeating the steps (a) to (d) in order. The wire 2 can be wound around the annular core 1. For example, steps (a) to (d) in FIG. 3 are repeated in the forward direction to wind the first side wire 2 around the annular core 1 by S winding, and the steps are repeated in the reverse direction to perform the second side wire 2. May be wound around the annular core 1 by Z winding.

  FIG. 4 is a cross-sectional view of the pinch roller unit 13 showing a state in which the side wire 2 is wound. FIG. 4 shows a state in which the winding process of the side wire 2 around the annular core 1 proceeds from (a) to (f). 4A shows the first step of winding the side wire 2, and FIG. 4F shows the last step of winding. Moreover, (f ') of FIG. 4 has shown the last winding process of the side wire 2 in the manufacturing apparatus which concerns on a reference example. Moreover, in FIG. 4, the filled circle has shown the side wire 2 wound by the 1st round.

  First, as shown in FIG. 4A, the side wire 2 starts to be wound along the annular core 1. In the state of FIG. 4A, both the inner roller 13a and the outer roller 13b are in direct contact with the annular core 1, and the annular core 1 is driven to rotate. When the side wire 2 is wound around the annular core 1 by one turn, the side wire 2 is wound around the second, third, fourth, fifth and annular core 1 as shown in FIG. The state shown in (b) of FIG.

  In the present embodiment, the n-th side wire 2 is arranged in the clockwise direction of the side wire 2 wound in the (n-1) th round. The rotational speed of the annular core 1 and the moving speed of the cassette 50 are provided at positions adjacent to the side wire 2 around which the n-th side wire 2 is wound in the (n-1) th round in the state of FIG. So that it is adjusted.

  In the state shown in FIG. 4B, the inner roller 13 a comes into contact with the side wire 2 wound around the outer periphery of the annular core 1. Then, the assembly of the annular core 1 and the side wire 2 in the state of FIG. 4B has a radius larger than the state of the state of FIG. 13 is rotated. For this reason, even if the inner roller 13a rotates at a constant rotational speed, the rotational speed of the rotating core 1 and the side wire 2 is the rotational speed of the annular core 1 and the side wire 2 in the state of FIG. Rather than the side wire 2.

  Therefore, as shown in FIG. 4 (c), when the fifth circumference of the side wire 2 is to be wound around the outer circumference of the annular core 1, the annular core 1 can be wound more than the state shown in FIG. 4 (a). The rotation speed is faster. That is, as shown in FIG. 4 (a), the rotational speed of the annular core 1 and the cassette that were initially adjusted so that the n-th side wire 2 is positioned next to the n-1-th side wire without a gap. The rotational speed of the annular core 1 deviates from the moving speed of 50. As a result, as shown in FIG. 4C, the side wire 2 of the seventh turn is disposed at a position spaced apart from the side wire 2 of the sixth turn by the gap T1. However, with the rotation of the annular core 1, the side wire 2 of the seventh turn moves to the side wire 2 side of the sixth turn, and there is no gap between them.

In this way, the side wire 2 is arranged so as to be adjacent to the outer periphery of the annular core 1 in a clockwise direction without a gap, and as shown in FIG. 4D, the outer roller 13b and the inner roller 13a are also connected to the side wire 2. Contact. Then, in the state shown in FIG. 4 (d), the aggregate of the annular core 1 and the side wire 2 has a turning radius larger by twice the diameter of the side wire 2 than in the state of FIG. 4 (a). Will be rotated. Accordingly, in the state shown in FIG. 4D, the rotational speed of the annular core 1 and the side wire 2 in the state shown in FIG. 4A and FIG. 4B and FIG. 4C is higher. The annular core 1 and the side wire 2 are rotated.

  Therefore, as shown in FIG. 4E, when the inner roller 13a and the outer roller 13b come into contact with the side wire 2, the n-th side wire 2 becomes the n-1-th side wire. 2 is arranged at a position separated by a gap T2 larger than the gap T1 generated in FIG.

  When the final circumference of the side wire 2 is wound, the distance between the side wire 2 wound just before that and the side wire 2 wound in the first circumference is only about the diameter of the side wire 2. For this reason, when the annular core 1 and the side wire 2 rotate at a speed higher than the initial speed, the side wire 2 in the final circumference is not a place where it should be originally placed, as shown in FIG. There is a risk of being disposed on the outer circumference of the already wound side wire 2 by shifting in the clockwise direction from the circumference. Thereby, there is a possibility that the winding accuracy of the side wire 2 around the annular core 1 is lowered.

  Therefore, in the manufacturing apparatus according to this embodiment, the rotation speed of the roller drive motor 18 that drives the pinch roller units 13 and 14 is controlled by the control unit 19 that functions as a speed adjustment unit. When the control unit 19 winds the side wire 2 for one layer around the outer periphery of the annular core 1, the side wire 2 on the final circumference is formed between the side wire 2 wound immediately before and the side wire 2 wound on the first turn. Control is performed so as to decrease the rotational speed of the pinch roller portions 13 and 14 as the number of turns of the winding of the side wire 2 around the annular core 1 increases so as to be disposed in the gap.

  More specifically, in the manufacturing apparatus according to the present embodiment, as shown in FIG. 4D, the 20th turn side wire 2 is the 19th turn side wire 2 and the first turn side wire as shown in FIG. 2, the number of rotations of the pinch roller portions 13 and 14 is lowered before the side wire 2 of the 20th turn is wound. Thereby, the side wire 2 of the last circumference is arrange | positioned between the side wire 2 wound immediately before it, and the side wire 2 wound on the 1st round, and can be wound by the outer peripheral side of the other side wire 2. It is prevented. Thereby, an annular concentric stranded cord with high winding accuracy is provided.

  FIG. 5 is a block diagram of the control unit 19. As shown in FIG. 5, the output of the counter 25 is input to the control unit 19, and the control unit 19 controls the roller drive motor 18 in response to this.

More specifically, the control unit 19 drives the roller drive motor 18 so as to rotate the pinch roller units 13 and 14 at the first rotation speed V1 in the initial state.
Next, the first cassette moving mechanism 20 drives the cassette 50 to start winding the side wire 2 around the annular core 1, and the control unit 19 further controls the cassette 50 by the first cassette moving mechanism 20 based on the output signal of the counter 25. Calculate the number of round trips.
When the control unit 19 determines that the number of reciprocations of the cassette 50 exceeds the threshold, the control unit 19 performs pinch roller units 13 and 14 at a second rotation speed V2 (V2 <V1) that is slower than the first rotation speed V1. Rotate. The threshold value of the number of reciprocations of the cassette 50 here is a value predicted in advance corresponding to the number of turns of the side wire 2 where the inner roller 13 a and the outer roller 13 b will come into contact with the side wire 2.

  Thus, according to the manufacturing apparatus according to the present embodiment, even if the number of windings of the side wire 2 around the annular core 1 increases, the rotational speeds of the drive rollers 13a and 14a are lowered accordingly. For this reason, the increase in the speed of the annular core 1 due to the thickening of the winding by the side wire 2 and the reduction in the rotational speed of the drive rollers 13a, 14a cancel each other, and the outer side of the side wire 2 on which the side wire 2 has already been wound. An annular concentric stranded cord with high winding accuracy can be manufactured without riding up.

  The manufacturing apparatus according to the present embodiment includes a threshold value changing unit 19a that allows an operator to change the threshold value. Thereby, the threshold value of the number of reciprocations for changing the rotation speed can be changed according to the type of the annular concentric stranded cord to be manufactured.

  Further, the manufacturing apparatus according to the present embodiment grasps the number of reciprocating motions of the cassette 50 by the first cassette moving mechanism 20 by using the counters 25 provided at both ends of the guide rail 26. In the manufacturing apparatus according to the present embodiment, the second cassette moving mechanism 30 operates when the cassette support portions 23 are positioned at both ends of the guide rail 26. For this reason, it can be acquired by the output of the counter 25 that the cassette support portion 23 is positioned at both ends of the guide rail 26, and the output of the counter 25 can also be used as a trigger for starting the operation of the second cassette moving mechanism 30. . Since the counter 25 serves as both a sensor for grasping the winding amount of the side wire 2 and a sensor for operating the second cassette moving mechanism 30, it is not necessary to provide a separate sensor.

  In addition, it is preferable that V-grooves having a large inner angle are provided on the contact surfaces of the inner and outer rollers of the pinch roller portion with the annular core 1 and the side wire 2. For example, if a V-groove with a small inner angle is provided on the contact surface, the contact point between the roller and the annular core 1 and the side wire 2 is easily displaced in the radial direction, and the rotational speed of the annular core 1 and the side wire 2 varies. This is because it is easy. For this reason, it is preferable to set the interior angle of the V-groove provided on the contact surface to be large so that the contact surface can contact a plurality of the annular core 1 and the side wire 2 as much as possible.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
For example, the number of laps used in the description of FIG. 4 is an example, and the present invention is not limited to this.

  In the example of FIG. 4, the side wire 2 is wound on the annular core 1 by one layer, but may be wound on a plurality of layers. When the side wire 2 is wound around the outer periphery of the annular core 1 in a plurality of layers, the speed of the pinch roller portion is decreased during the winding of the side wire 2 for each layer as described above.

  In the example of FIG. 4, the example in which the side wire 2 is wound around the annular core 1 so as to arrange the side wire 2 in the clockwise direction has been described. However, the winding is performed so that the side wire 2 is arranged in the counterclockwise direction. May be. Moreover, you may wind so that the side wire 2 may be arrange | positioned in a different direction for every layer.

  In the above example, the example in which the rotational speeds of the drive rollers 13a and 14a are changed in two stages has been described. However, the present invention is not limited to this example. When the amount of the side wire 2 wound around the annular core 1 is large, the speed may be changed in multiple stages. Further, the rotational speeds of the drive rollers 13a and 14a may be continuously changed according to the amount of the side wire 2 wound around the annular core 1.

  In the above-described embodiment, the example in which the rotation speed of the pinch roller units 13 and 14 is changed by the control unit 19 that electrically controls the motor as the speed adjustment unit has been described. However, the present invention is limited to this example. Absent. For example, a speed change mechanism as a speed adjustment unit is provided between the roller drive motor 18 and the pinch roller units 13 and 14 so that the rotation speed of the pinch roller units 13 and 14 is reduced according to the number of reciprocations of the cassette 50. You may change the gear stage of a transmission mechanism.

  Moreover, although the above-mentioned embodiment gave and demonstrated the example which reduces the rotational speed of the pinch roller parts 13 and 14 according to the increase in the frequency | count of the circumference | surroundings of the winding of the side wire 2 to the cyclic | annular core 1, this invention is demonstrated to this. Not limited. You may comprise so that the moving speed of the cassette 50 by the 1st cassette moving mechanism 20 may be raised according to the increase in the frequency | count of the winding of the side wire 2 to the cyclic | annular core 1. FIG.

  For example, when the driving rollers 13a and 14a rotate the annular core 1 at a constant speed, the rotational speed of the annular core 1 increases as the winding of the side wire 2 around the annular core 1 proceeds. Therefore, in this modification, the cassette 50 is moved at high speed by the first cassette moving mechanism 20 in accordance with the increase in the number of windings. Thereby, since the reciprocating motion of the cassette 50 is also increased according to the increase in the rotational speed of the annular core 1, the winding pitch of the side wire 2 around the annular core 1 is difficult to change.

  The speed change of the reciprocating motion of the cassette 50 by the first cassette moving mechanism 20 may be realized by electrically controlling the moving mechanism driving motor 22 or mechanically changing the speed by a speed change mechanism or the like. You may comprise.

  In the above-described embodiment, the counter 25 grasps the number of times the cassette 50 is reciprocated by the first cassette moving mechanism 20, and from this, the example in which the winding amount of the side wire 2 around the annular core 1 is specified has been described. The present invention is not limited to this example.

  For example, instead of the counter 25 that can count the reciprocating motion of the cassette 50 by the first cassette moving mechanism 20, a counter that can count the reciprocating motion of the cassette 50 by the second cassette moving mechanism 30 may be adopted. As the number of reciprocating motions by the second cassette moving mechanism 30 increases, the number of windings of the side wire 2 around the annular core 1 also increases. Similarly, a counter capable of counting the number of operations of the first cassette moving mechanism 20 and the second cassette moving mechanism 30 may be employed.

Alternatively, a weight sensor that detects the weight of the cassette 50 can be used in place of the counter 25. For example, the weight sensor can be attached to the cassette support 23. When the weight of the cassette 50 decreases, the number of windings of the side wire 2 increases.
By adopting such a sensor, the amount of winding of the side wire 2 around the annular core 1 is grasped, the rotational speed of the annular core 1 by the core rotating mechanism 10 is lowered, or the cassette 50 is moved by the first cassette moving mechanism 20. You may increase the speed.

1: annular core 2: side wire 10: core rotating mechanism 13, 14: pinch roller unit 13a, 14a: driving roller 13b, 14b: driven roller 15: presser roller 18: roller driving motor 19: control unit 19a: threshold changing unit 20: First cassette moving mechanism 23: Cassette support 30: Second cassette moving mechanism 50: Cassette

Claims (3)

A core rotation mechanism for rotating the annular core in the circumferential direction;
A first cassette moving mechanism for moving the cassette containing the side wire to the outside and inside of the ring of the annular core;
Moving the cassette from one side to the other side of the rotation axis of the annular core inside the ring of the annular core, and moving the cassette from the other side of the rotation axis of the ring core to the one side outside the ring of the annular core; A second cassette moving mechanism,
An annular concentric twisted cord is manufactured by moving the cassette to the inside and the outside of a ring of an annular core rotating in the circumferential direction, and spirally winding a side wire drawn from the cassette around the annular core. A cord manufacturing apparatus,
When winding the side wire for one layer around the outer periphery of the annular core, the side wire in the final circumference is arranged in the gap between the side wire wound just before and the side wire wound around the first turn. As the number of windings of the annular core increases, the rotational speed of the core rotating mechanism is decreased, or the moving speed of the cassette by the first cassette moving mechanism is increased, and the annular concentric twisting is provided with a speed adjusting unit. Code manufacturing equipment. A counter that counts the number of reciprocations between the outside and inside of the ring of the annular core of the cassette by the first cassette moving mechanism;
The said speed adjustment part controls the said core rotation mechanism or the said 1st cassette movement mechanism according to the output of the said counter which increases with the increase in the frequency | count of the winding of the side wire to the cyclic | annular core. Equipment for annular concentric twisted cords. The counter is a sensor that is provided near one end of the reciprocating stroke of the cassette and detects the cassette;
The apparatus for manufacturing an annular concentric stranded cord according to claim 2, wherein the cassette moving operation by the second cassette moving mechanism is started in accordance with the output of the sensor.

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