JP2015000523A - Manufacturing device for annular concentrically twisted cord and cassette using for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing device for an annular concentrically twisted cord having the high winding accuracy of a side wire around an annular core.SOLUTION: A manufacturing device for an annular concentrically twisted cord includes: a core rotation mechanism 10 for rotating an annular core 1 in a circumferential direction; a first cassette moving mechanism 20 for moving a cassette 50 to the outside and inside of a ring of the annular core 1; and a second cassette moving mechanism 30 for moving the cassette 50 from one side to the other side of a rotation shaft of the annular core 1 on the inside of the ring of the annular core, and moving the cassette 50 from the other side to the one side of the rotation shaft of the annular core 1 on the outside of the annular core 1. The cassette 50 is equipped with a case 52 storing a reel 51 and provided with a cover 62 for covering an outer peripheral side of a side wire 2 wound around the reel 51, and a guide block 53 provided on an outer periphery of the case 52. The cover 52 has a slit 54, and an opening area s1 on the annular core 1 side of the guide portion 53a of the guide block 53 is smaller than an opening area s2 of a slit 54.

Description

  The present invention relates to an apparatus for producing an annular concentric stranded cord and a cassette used therefor.

  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 from Patent Document 1. In the manufacturing apparatus described in Patent Document 1, an annular concentric stranded cord is manufactured by winding a side line wire around an annular core by passing a reel around which the side line wire is wound between an inner side and an outer side of a ring of the annular core. Yes.

Japanese Patent No. 3745771

By the way, in such a manufacturing apparatus, when the reel approaches the annular core, the side wire drawn from the reel is loosened between the winding points. As a result, the position of the winding point is not stable, and the winding accuracy is reduced.
Therefore, in the manufacturing apparatus described in Patent Document 1, when the reel approaches the annular core, the reel is rotated in the direction opposite to the unwinding direction so that the side wire is not loosened. In the manufacturing apparatus described in Patent Document 1, the reel is rotated in the reverse direction by the rack and the pinion. However, if the mechanism for rotating the reel in the reverse direction is mounted on the manufacturing apparatus, the mechanism becomes complicated and the cost increases.

  Then, an object of this invention is to provide the manufacturing apparatus which can provide a cyclic | annular concentric twisted cord with high winding precision with a simple mechanism, and a cassette used for this.

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,
The cassette is
A reel with a side wire wound around its outer periphery;
A case including a cover that houses the reel and covers an outer peripheral side of a side wire wound around the reel;
A guide block provided on the outer periphery of the case and provided with a guide portion for guiding the side wire drawn from the reel to the annular core;
The cover has a slit through which a side wire extending from the reel toward the guide portion passes,
The opening area of the guide portion on the annular core side is smaller than the opening area of the slit.
Moreover, this invention is a cassette used for the said manufacturing apparatus.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing apparatus which can provide an annular concentric twisted cord with a high winding precision with a simple mechanism, and a cassette used for this can be 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 of the cassette of the manufacturing apparatus shown in FIG. It is sectional drawing in the VV line | wire of FIG. It is a figure explaining operation | movement of the cassette moved by the 1st cassette moving mechanism. It is a figure corresponding to FIG. 4 of the manufacturing apparatus which concerns on the modification of this invention.

<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,
The cassette is
A reel with a side wire wound around its outer periphery;
A case including a cover that houses the reel and covers an outer peripheral side of a side wire wound around the reel;
A guide block provided on the outer periphery of the case and provided with a guide portion for guiding the side wire drawn from the reel to the annular core;
The cover has a slit through which a side wire extending from the reel toward the guide portion passes,
The opening area of the guide portion on the side of the annular core is an apparatus for manufacturing an annular concentric stranded cord that is smaller than the opening area of the slit.

  In the annular concentric stranded cord manufacturing apparatus according to the above-described embodiment, the guide block is provided in the guide block provided on the outer periphery of the case, and the slit is provided in the case. Accordingly, the side wire moves while being guided by the guide hole and returned to the inside of the case, and does not sag between the winding point and the guide hole, and the winding point is maintained at one point. Further, the side wire can be largely bent between the guide hole and the reel by using a slit. As a result, the side wire can return to the reel side without being tangled. Therefore, the winding point can be kept constant with a simple mechanism, and an annular concentric stranded cord with high winding accuracy can be manufactured.

(2) The guide portion may be a through hole that penetrates the guide block in a direction along a circumferential direction of the reel.
When the through-hole as the guide portion penetrates in the circumferential direction of the reel, when the side wire is drawn out from the reel, the side wire can smoothly pass through the guide portion, and the side wire is made into the annular core with high accuracy. Can be wound.

(3) The reel is supported by the case so as to be relatively rotatable via a bearing,
The case has a side wall that covers at least one side surface of the reel with respect to the rotation axis direction of the reel,
The cassette may include a braking mechanism that presses a side surface of the reel and the side wall of the case together to suppress rotation of the reel with respect to the case.

  Since the rotation of the reel can be suppressed by the braking mechanism, even if the side wire is wound around the annular core and the moment of inertia of the cassette is reduced, the cassette is difficult to idle. Thereby, since the side wire of a required length can be drawn out from a cassette, an annular core wire twisted cord with high winding accuracy can be manufactured.

(4) The braking mechanism is a magnet provided on the reel,
The reel may be pressed against the metal case by the magnet.
(5) The braking mechanism may be a spring that is interposed between the reel and the side wall and presses the reel against the side wall of the case.
A braking force can be applied to the reel with a simple structure.

  Moreover, embodiment of this invention is a cassette used for the manufacturing apparatus of (6) cyclic | annular concentric twisted cord mentioned above. If said cassette is used for the manufacturing apparatus mentioned above, an annular core wire twisted cord with high winding accuracy can be manufactured.

<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 (slide unit) 20, and a second cassette moving mechanism ( Supply unit) 30 and a cassette 50 containing the side wire 2.

(Core rotation mechanism)
The core rotation mechanism 10 rotates the annular core 1 in a posture in which the central axis 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. 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. 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 2 is referred to as a winding point.

  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.

  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, and a cassette connection fixed to the other side of the link mechanism 21. Part 23. As the motor 23 rotates, the other side of the link mechanism 21 moves in the left-right direction, and the cassette 50 is moved to the outside and inside of the ring of the annular core 1 in a front view.

(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 A of the annular core 1 with respect to the rotation surface of the annular core 1. A second cassette moving mechanism 30 is provided in each of the pair of cassette connecting portions 23. 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.

(Details of cassette)
FIG. 4 is a longitudinal sectional view of the cassette 50. In the following description, the right side in FIG. 4 is defined as one side and the left side is defined as the other side. Further, the side close to the rotation axis D of the reel 51 (vertical center in FIG. 4) is referred to as an inner peripheral side, and the side far from the rotation axis D of the reel 51 (vertical end in FIG. 4) is referred to as an outer peripheral side.

  As shown in FIG. 4, the reel 51 has a winding recess 51a formed on the outer periphery thereof. The side wire 2 is regularly arranged and wound around the winding recess 51a. An inner peripheral portion of the reel 51 is rotatably attached to the case 52.

  The case 52 includes an inner peripheral part 61, an outer peripheral part (cover) 62, one side wall part 63, and the other side wall part 64. The reel 51 is rotatably accommodated in the internal space S surrounded by the inner peripheral portion 61, the outer peripheral portion 62, the one side wall portion 63, and the other side wall portion 64.

  The outer peripheral portion 62 covers the outer peripheral side of the side wire 2 wound around the reel 51. A reel 51 is rotatably attached to the outer peripheral side of the inner peripheral portion 61 via a bearing 65. As a result, the reel 51 is rotatable with respect to the case 52.

  Further, two support holes 66 are formed in the inner peripheral portion 61 so as to extend in the direction of the rotation axis D of the reel 51. The pins 24 of the cassette connecting portion 23 can be inserted into the support holes 66, respectively. Thus, since the cassette 50 is supported by the cassette connecting portion 23 at two points, the cassette 50 cannot be rotated relative to the cassette connecting portion 23.

  In the internal space S of the case 52, a magnet 67 is provided at a position that does not interfere with the rotating reel 51. The magnet 67 is fixed to the one side wall portion 63. On the other side of the reel 51, a magnetic body 68 is fixed. By attracting the magnet 67 and the magnetic body 68 by magnetic force, the one surface 51 b of the reel 51 is pressed against the inner wall surface 63 a of the one side wall 63 of the cover 52. Thereby, a braking force can be applied to the relative rotation of the reel 51 with respect to the case 52.

  5 is a cross-sectional view taken along line VV in FIG. As shown in FIG. 5, a guide block 53 and a slit 54 are provided on the outer peripheral portion 62 of the case 52. The guide block 53 is provided on the side (the right side in FIG. 5) in the direction away from the annular core 1 relative to the rotation axis D of the reel 51 as viewed from the rotation axis D direction of the reel 51. More specifically, when viewed from the direction of the rotation axis D of the reel 51, an angle formed by a line connecting the rotation axis D of the reel 51 and the guide hole 53a with a direction orthogonal to the direction of movement of the cassette by the first cassette moving mechanism. A guide hole 53a is provided at a position where θ is not less than 0 degrees and less than 90 degrees.

  The slit 54 is provided on the side of the guide block 53 in the direction away from the annular core 1. The opening area s1 on the annular core 1 side of the guide portion 53a is smaller than the opening area s2 of the slit 54.

(Effects of guide and slit)
FIG. 6 is a view for explaining the operation of the cassette 50 moved by the first cassette moving mechanism 20.
As described above, the cassette 50 reciprocates between the inside and outside of the ring of the annular core 1. The reciprocating speed is set slower than the rotational speed of the annular core 1. For this reason, when the cassette 50 moves toward the inside of the ring of the annular core 1, a compressive force acts on the side wire 2 fed out from the cassette 50, and the side wire 2 between the reel 51 and the winding point A. There is a risk of sagging.

  Therefore, in the manufacturing apparatus of Patent Document 1, the side wire is wound by rotating the reel in the reverse direction to prevent the side wire from sagging between the winding point and the reel. However, such a mechanism tends to be complicated, maintenance becomes complicated, and the manufacturing cost of the manufacturing apparatus increases.

  Therefore, in the manufacturing apparatus according to the present embodiment, the cassette 50 is provided with guide holes 53a and slits 54. When the cassette 50 moves toward the inside of the ring of the annular core 1 and a compressive force acts on the side wire 2, the side wire 2 moves so as to be guided by the guide hole 53 a and returned to the inside of the case 52. For this reason, the side wire 2 does not sag between the winding point A and the guide hole 53a, and the winding point A can be maintained at one point.

  Further, when the side wire 2 is returned from the guide hole 53a toward the case 52, the side wire 2 is bent between the guide hole 53a and the reel 51, and tries to absorb the extra length that has been returned. At this time, since the case 52 has the slit 54, the side wire 2 can be bent with a large radius of curvature so as to protrude outside the cassette 50 using the slit 54. Thereby, since the side wire 2 is not bent at a steep angle, the side wire 2 is not bent and the side wire 2 can return to the reel 51 side.

  As described above, according to the manufacturing apparatus according to the present embodiment, the simple mechanism of the guide hole 53a and the slit 54 is used without mounting a mechanism for rotating the reel in reverse as in the manufacturing apparatus described in Patent Document 1. The winding point can be kept constant, and an annular concentric stranded cord with high winding accuracy can be manufactured.

  If the opening area s1 on the annular core 1 side of the guide hole 53a is large, the position of the side wire 2 that passes through the guide hole 53a varies. Therefore, the opening area s1 is preferably small. On the other hand, it is preferable that the opening area s2 of the slit 54 is large so that the side wire 2 can be largely bent. Therefore, in the manufacturing apparatus according to the present embodiment, the opening area s1 on the annular core 1 side of the guide hole 53a is set smaller than the opening area s2 of the slit 54.

  Further, as shown in FIG. 6, in the manufacturing apparatus according to the present embodiment, the side wire 2 fed out from the reel 51 passes from the lower side through the annular core 1 and the far side to the upper side, and the slit 54 and the guide hole 53a. And reaches a winding point A where it joins the annular core 1.

When the cassette 50 is located outside the ring of the annular core 1, the distance between the winding point A and the guide hole 53 a is large. For this reason, the direction of the side wire 2 fed out from the reel 51 hardly changes in the guide hole 53a, and the side wire 2 is smoothly fed out from the guide hole 53a to the annular core 1 side.
However, when the cassette 50 is positioned inside the ring of the annular core 1, the distance between the winding point A and the guide hole 53 a becomes short. For this reason, there is a possibility that the side wire 2 from the reel 51 toward the winding point A is greatly bent in the guide hole 53a.

  Therefore, in the manufacturing apparatus according to the present embodiment, the guide hole 53a is provided at a position far from the winding point A. For this reason, even when the cassette 50 is located inside the ring of the annular core 1, a large separation distance between the guide hole 53 a and the winding point A can be secured, and the path of the side wire 2 from the reel 51 toward the guide hole 53 a. And the path of the side wire 2 from the guide hole 53a toward the winding point A is hardly changed. Therefore, the side wire 2 fed out from the reel 51 can go straight to the winding point A. As a result, the direction of the side wire 2 is not significantly changed by the guide hole 53a, and is smoothly fed out toward the winding point A.

In the manufacturing apparatus according to the present embodiment, the case 52 of the cassette 50 is provided with a slit 54 that feeds the side wire 2 drawn from the reel 51 toward the guide hole 53a. The slit 54 is provided on the side away from the annular core 1 of the cassette 50 with respect to the guide hole 53a. For this reason, the side wire 2 drawn out from the reel 51 can sag at the slit 54 and can enter the guide hole 53a at a small entry angle.
The opening area s2 of the slit 54 is preferably formed with a size of 20 degrees or more with respect to the rotation axis D of the reel 51 so that the side wire 2 can sufficiently sag.

  Further, since the opening area s2 of the slit 54 is set large as described above, when the side wire 2 is wound around the reel 51, the work can be performed by using the slit 54 that is widely opened. good.

(Operation and effect of braking mechanism)
According to the manufacturing apparatus according to the present embodiment, the reel 51 is supported by the case 52 via the bearing 65 so as to be relatively rotatable as shown in FIG. Further, the case 52 has one side wall 63 on one side of the reel 51 with respect to the rotation axis D direction of the reel 51. Further, the magnet 67 attached to the one side wall portion 63 attracts the magnetic body 68 attached to the reel 51, thereby pressing the one side surface 51 b of the reel 51 and the one side wall portion 63 of the case 52 together. ing. As described above, in the manufacturing apparatus according to the present embodiment, the magnet 67 and the magnetic body 68 function as a braking mechanism, and the rotation of the reel 51 relative to the case 52 is suppressed.

  As the winding of the side wire 2 around the annular core 1 proceeds, the amount of the side wire 2 in the cassette 50 decreases. Then, the reel 51 around which the side wire 2 is wound is lightened and the moment of inertia is reduced, so that the reel 51 is easily idled. If the reel 51 idles, the side wire 2 may be pulled out more than necessary, and the winding accuracy of the annular core wire stranded cord may be reduced.

  Therefore, according to the manufacturing apparatus according to the present embodiment, the rotation of the reel 51 is suppressed by the braking mechanism. As a result, a constant braking force independent of the amount of the side wire 2 in the cassette 50 can be applied, and the side wire 2 can always be fed out only by a necessary amount. As a result, the side wire 2 can be accurately wound around the annular core 1. Since the braking force applied by the magnet 68 is applied in the direction along the rotation axis D of the reel 51, the braking force is not affected by gravity. For this reason, the braking mechanism can exhibit a braking force that does not depend on the amount of the side wire 2.

  In the above-described embodiment, the example has been described in which the case 52 is provided with the magnet 67 and the reel 51 is provided with the magnetic body 68 to configure the braking mechanism. However, the present invention is not limited to this example. For example, even if the case 52 is formed of metal and the magnet is provided on the reel, the reel 51 can be pressed against the case 52 to suppress the rotation of the reel 51.

  Or you may comprise not only a magnet but like the modification shown in FIG. FIG. 7 is a view corresponding to FIG. 4 of the manufacturing apparatus according to the modification of the present invention. In this modification, a spring 69 is provided between the reel 51 and the case 52 to press the reel 51 in one direction of the case 52. With this spring 69, the one surface 51 b of the reel 51 is pressed against the one side wall 63 of the case 52. Thereby, rotation of the reel 51 is suppressed.

  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.

1: annular core 2: side wire 10: core rotating mechanism 20: first cassette moving mechanism 30: second cassette moving mechanism 50: cassette 51: reel 52: case 53: guide block 53a: guide hole 54: slit 61: inside Peripheral part 62: outer peripheral part 63: one side wall part 64: other side wall part S: inner space 65: bearing 65
66: support hole 67: magnet 68: magnetic body A: winding point B: rotation axis of the annular core C: rotation surface of the annular core D: rotation axis of the reel

Claims (6)

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,
The cassette is
A reel with a side wire wound around its outer periphery;
A case including a cover that houses the reel and covers an outer peripheral side of a side wire wound around the reel;
A guide block provided on the outer periphery of the case and provided with a guide portion for guiding the side wire drawn from the reel to the annular core;
The cover has a slit through which a side wire extending from the reel toward the guide portion passes,
An apparatus for manufacturing an annular concentric stranded cord, wherein an opening area of the guide portion on an annular core side is smaller than an opening area of the slit.   The said guide part is a manufacturing apparatus of the cyclic | annular concentric twisted cord of Claim 1 which is a through-hole which penetrates the said guide block in the direction along the circumferential direction of the said reel. The reel is supported by the case so as to be relatively rotatable via a bearing,
The case has a side wall that covers at least one side surface of the reel with respect to the rotation axis direction of the reel,
3. The annular concentric stranded cord according to claim 1, wherein the cassette includes a braking mechanism that presses a side surface of the reel and the side wall of the case to suppress rotation of the reel with respect to the case. Manufacturing equipment. The braking mechanism is a magnet provided on the reel,
The apparatus for manufacturing an annular concentric stranded cord according to claim 3, wherein the reel is pressed against the case made of metal by the magnet.   The apparatus for manufacturing an annular concentric stranded cord according to claim 3, wherein the braking mechanism is a spring that is interposed between the reel and the side wall and presses the reel against the side wall of the case. The cassette used for the manufacturing apparatus of the cyclic | annular concentric twisted cord as described in any one of Claim 1 to 5.

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