JP2008023588A - Method and device for forming coil wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for forming a coil wire capable of rapidly performing the delivery of a wire coiled on a reel through the forming of the coil wire in one process. <P>SOLUTION: A wire S delivered by a delivery reel 24 integrally rotating with a flyer is taken up in a coiling mechanism K by a feed roller 10, and coiled in the direction opposite to the rotating direction of the flyer by coiling pins 13, 14 with the axis of a shaft 1 being a center of curvature. In this condition, a roller 21 is fitted in a swollen portion 17 of an inner circumferential surface 16 of a fixed ring 18 for each rotation of the flyer by the coiling pin 14 on the downstream side, and a deformed portion of a partially small curvature is formed for each turn of the coil, and delivered downwardly in a flat strip-like coil wire W in a substantially fitted state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method and apparatus for forming a coil wire, and more particularly to a method and apparatus for forming a flat coil wire that is flexible and has a large elongation suitable as a reinforcing material for rubber products such as automobile tires.

  First, a wire rod such as a steel wire used as a reinforcing material for rubber products such as automobile tires is put into a close coil forming machine to form a cylindrical spiral close coil, and then the formed close coil is used as a coil wire forming machine. The coil center for each turn is displaced in one direction sequentially in a substantially close contact state, and becomes a flat strip in a single free state. Conventionally, it has been attempted to form a coil wire having a high degree of freedom (for example, see Patent Documents 1 and 2).

  In addition, as a method and apparatus for forming a cylindrical helical contact coil, a wire wound around a reel on a shaft is fed out by a fryer that rotates around the shaft axis of the shaft, and is rotated integrally with the fryer so that the shaft axis is curved. By taking it into a coiling mechanism that coiles the wire in the direction opposite to the rotation direction of the flyer as the center, forming it into a coil shape and sending it in the axial direction, the coil after forming can be sent out without rotation, processing A long coil having a stable quality can be manufactured at low cost (for example, see Patent Document 3).

JP 2004-244788 A JP 2005-186133 A JP 2005-186135 A

  Suitable as a reinforcing material for rubber products such as automobile tires, the coil center of each turn in a substantially close contact state is sequentially displaced in one direction to form a flat belt shape in a single free state, with a flexible and large stretch In order to form a coil wire with a high degree of freedom, in the conventional technique, as described above, a wire rod is put into a contact coil forming machine to form a cylindrical spiral contact coil, and then the formed contact coil is Since it is formed in two steps, such as being put into a coil wire forming machine and forming a coil wire, equipment is required for each step. In addition, the close-contact coil can be formed at a high speed by the conventional close-contact coil forming machine, for example, but the conventional coil wire forming machine in which the close-contact coil is inserted and sequentially formed from one end side has a mechanism in which the number of rotations of the die is excessive. It cannot be made high and takes a long time for molding.

  The present invention is intended to solve these problems, and provides a coil wire forming method and apparatus capable of performing from a feeding of a wire wound on a reel to coil wire forming in one step and forming at high speed. For the purpose.

  In the coil wire forming method of the present invention, the wire wound around the reel on the shaft is fed out through a fryer that rotates about the shaft axis of the shaft, and rotates integrally with the fryer so that the axis of the shaft is the center of curvature. By winding the wire in the opposite direction to the rotation direction and forming a deformed portion with a partially changed curvature for each coil turn, and feeding it into a coiling mechanism that feeds out, the coil center for each turn is displaced. The coil wire in the form of a flat band is formed in one step.

  Further, the coil wire forming apparatus of the present invention is a coil wire forming apparatus for forming a coil wire in a flat band shape by deviating the coil center for each turn in one step, and a reel for winding a wire, The shaft on which the reel is mounted, the flyer that rotates around the shaft core of the shaft and feeds the wire wound on the reel, and the shaft core position that takes in the wire that is rotated together with the flyer and fed out through the flyer And a coiling mechanism for forming and sending out a deformed portion having a partially changed curvature for each turn of the coil while winding the coil in the direction opposite to the rotation direction of the flyer.

  In this coil wire forming apparatus, the coiling mechanism includes, for example, a feed roller that takes in and feeds the wire fed through the fryer while rotating integrally with the fryer, and the shaft core that feeds the wire fed by the feed roller. A plurality of coiling pins that are arranged in a plurality of locations separated in the circumferential direction so as to bend along a curvature circle having a predetermined radius with the position being the center of curvature, and the inner peripheral surface is the axis center position of the shaft as the center of curvature. A fixing ring fixed to the apparatus main body in a shape partially bulging radially outward in a part of the circumferential direction based on a curvature circle having a larger curvature radius than the predetermined radius, and a plurality of coiling pins A part of the coiling pin includes a roller for inscribed in the ring at the outer end, and the roller is inscribed in the inner peripheral surface of the fixed ring and is movable forward and backward. In this configuration, the deformed portion is formed by fitting the wire into the bulging portion of the inner peripheral surface of the fixing ring for each rotation of the fryer, and letting the wire partially escape to the outside in the radial direction of the coil every one turn of the coil. It is good to do.

  According to this method and apparatus, the wire is fed out through the flyer, bent by a coiling mechanism to a predetermined curvature around the center of curvature of the rotation axis of the flyer by the principle of a spring winding machine, and for each turn of the coil A deformed portion having a partially different curvature is formed, and is sent out as a flat strip-shaped coil wire. In this way, from the feeding of the wire wound on the reel to the coil wire forming can be performed in one step and can be formed at a high speed. Moreover, according to this method and apparatus, the coil wire after molding is sent out while rotating relatively to the movable part (feed roller, counter roller, coiling pin, etc.) of the coiling mechanism. By rotating the movable part integrally with the flyer in the opposite direction to the coil winding direction, the rotation can be suppressed as an absolute movement, and by adjusting the rotation speed so that one turn of the coil is made during one turn of the flyer. It can be sent out in one direction without rotation, and a long coil wire with stable processing quality can be manufactured at low cost. These can be realized with a simple device.

  As described above, according to the present invention, it is possible to form a coil wire in a single process at a high speed with a simple device, and to manufacture a long-length coil wire with stable quality at low cost. .

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show an example of an embodiment of the present invention. FIG. 1 is a side view of the main part of the coil wire forming apparatus, and FIG. 2 is a front sectional view of the main part of the coil wire forming apparatus.

  In the coil forming apparatus of this embodiment, a shaft 1 is cantilevered substantially horizontally on a support base (not shown), and a reel 2 around which a wire S is wound is rotatably mounted on the shaft 1. The flyer 4 is rotatably mounted on the free end side of the shaft 1 with the friction plate 3 interposed therebetween so as to feed the filament S wound around the reel 2 by rotating around the axis of the shaft 1. . A gear shaft 5 is connected to the shaft 1 so as to protrude forward of the fryer 4 on an extension of the axis on the free end side, and a gear 6 is fixed to the gear shaft 5.

  A mechanism plate 7 on which the coiling mechanism K is disposed is fixed to the front surface of the fryer 4. The mechanism plate 7 is bolted at one end via the boss portion 8 and bolted at the other end via the long hole 9 so that the angle of the mechanism plate 7 can be adjusted within a predetermined range with respect to the rotational axis of the fryer 4.

  In the coiling mechanism K, the movable part rotates integrally with the fryer 4 and takes in the wire S fed out by the fryer 4, and winds the coil in the direction opposite to the rotation direction of the fryer 4 with the axis position of the shaft 1 as the center of curvature. A deformed part with a partially changed curvature is formed for each round of the coil, and the configuration of the movable part is the same as the forming mechanism (coiling mechanism) of a spring winding machine (mechanical coiling machine). A feed roller 10 and a spring-biased counter roller 11 which are arranged to face the front side of the mechanism plate 7 so as to feed the wire S while rotating integrally with the fryer 4, and a small coil diameter with the axis of the shaft 1 as the center of curvature. A half-moon-shaped coiling core 12 that is disposed inside a curvature circle having a predetermined radius corresponding to a portion and rotates integrally with the flyer 4, and the coiling core 12 Is located at a distance in the circumferential direction of the peripheral arcuate faces are equipped with two coiling pins 13, 14 which rotates integrally with the flyer 4 while bending the wire material S fed by the feed roller 10.

  In addition, the coiling mechanism K of this embodiment has an inner peripheral surface 16 fixed to a support plate 15 erected on a base (not shown) of the apparatus main body, with the axial center position of the shaft 1 as the center of curvature. Based on a curvature circle having a large radius to the extent that the coiling pins 13 and 14 can be accommodated inside, a fixed ring 18 having a shape having a bulging portion 17 (bulging portion) partially radially outward in a part of the circumferential direction. It has.

  Of the two coiling pins 13, 14, the coiling pin 13 located on the upstream side in the coil winding direction has a coiling roller 19 at the inner end and can be adjusted in position on the front surface of the mechanism plate 7. It is fixed to. On the other hand, the coiling pin 14 located on the downstream side has a coiling roller 20 at the inner end and a roller 21 for inscribed in the ring at the outer end. The elongated hole 22 and the pin 23 are loosely fitted and fixed so as to be able to advance and retreat in contact with the peripheral surface 16, and the roller 21 is fitted to the bulging portion 17 of the inner peripheral surface 16 of the fixing ring 18 every rotation of the shaft 1. The wire S is partially escaped to the outside in the coil radial direction by being caught, and a deformed portion having a large coil diameter is formed.

  Further, the mechanism plate 7 is provided with a feeding roller 24 that rotates integrally with the flyer 4 and feeds the wire S from the reel 2 in the vicinity of the end that is bolted through the boss 8, and the feeding roller 24. There is a guide roller 25 that changes the direction of the drawn wire S approximately 90 degrees and guides it between the feed roller 10 and the counter roller 1 between the coiling pin 19 on the front side in the coil winding direction and the coiling mandrel 12 in a substantially straight line. It is arranged. The mechanism plate 7 is provided with line guides (straighteners) 26 and 27 at positions in front of and behind the feed roller 10 in the line feed direction.

  The feed roller 10 is fixed to one end of a roller shaft 28 that penetrates the mechanism plate 7, and the roller shaft 28 is rotatably supported by the mechanism plate 7 via a bearing 29. A gear 30 is fixed to the other end of the roller shaft 28 on the back side of the mechanism plate 7. The gear 6 meshes with the gear 30 at the other end of the roller shaft 28 and is fixed to the gear shaft 5 at the free end of the shaft 1. An idle gear 31 is rotatably supported via a support shaft 32 so as to mesh and transmit rotation from the shaft 1 side to the roller shaft 28 side. Thereby, the rotation of the shaft 1 is transmitted to the feed roller 10 via the gear 6, the idle gear 31, the gear 30, and the roller shaft 28.

  In this coil wire forming apparatus, a wire S such as a steel wire is wound around a reel 2, the tip of the wire S is wound around a feeding roller 24, and then wound around a guide roller 25, and a wire guide 26 on the upstream side in the wire feed direction. Between the feed roller 10 and the counter roller 11, pulled along the downstream line guide 27 to the position of the coiling pin 13 on the upstream side in the coil winding direction, and further downstream with the coiling core 12. The coiling pin 14 and the coiling mandrel 12 are pulled out to a position reaching. This completes the setting for forming the coil wire. In this state, the flyer 4 and the shaft 1 are driven by motors (not shown) and rotated in opposite directions. Then, the reel 2 rotates in one direction (counterclockwise in FIG. 1) in conjunction with the shaft 1 via the friction plate 3, and the wire S is fed out.

  Then, the fed wire rod S is taken into the coiling mechanism K by the feed roller 10, and the coiling pins 13 and 14 make the axis of the shaft 1 the center of curvature opposite to the rotation direction of the flyer 4 (in FIG. 1). Coiled in the clockwise direction). At that time, the coiling pin 14 on the downstream side is held at a position where the outer end roller 21 is inscribed in the inner peripheral surface 16 of the fixing ring 18 and the coiling roller 20 bends the wire S with a predetermined radius of curvature. Then, the wire S is bent at a predetermined curvature in cooperation with the upstream coiling pin 13, and the inner peripheral surface of the fixing ring 18 at a predetermined position (right side position in the example of FIG. 1) every rotation of the fryer 4. The roller 21 fits into the 16 bulging portions 17 to partially release the wire S to the outside in the coil radial direction and reduce the curvature of the portion (increase the coil diameter). As a result, a deformed portion having a small curvature is partially formed for each circumference of the coil, and is sent out downward as a flat strip-shaped coil wire W in a substantially close contact state.

  In this way, from the feeding of the wire wound around the reel 2 to the coil wire forming can be performed in one step and can be formed at a high speed. Moreover, according to this method and apparatus, the molded coil wire W is applied to the movable part including the mechanism plate 7 of the coiling mechanism K, the feed roller 10, the counter roller 11, the coiling cored bar 12, the coiling pins 13, 14 and the like. On the other hand, although it is sent out while rotating relatively, the movable part of the coiling mechanism K rotates in the reverse direction with respect to the coil winding direction integrally with the flyer 4, so that rotation can be suppressed as absolute movement, By adjusting the rotation speed so that one turn of the coil is made during one rotation of the fryer 4, it is possible to send out in one direction without rotation, and a long coil wire with stable processing quality can be made inexpensively. Can be manufactured. That is, the rotational speed of the flyer 4 can be adjusted by setting the rotational speed of a flyer driving motor (not shown), and the rotational speed (coiling speed) of the feed roller 10 is adjusted to a shaft driving motor (not shown). The rotation speed ratio between the fryer 4 and the feed roller 10 can be adjusted. In particular, one turn of the coil is made while the fryer 4 makes one rotation. By adjusting the rotation speed ratio between the fryer 4 and the feed roller 10 as described above, the coil wire W as a product can be stably fed out in one direction without rotation.

  The coiling mandrel 12 is provided so as to be able to cope with the case where the coil wire W which is a product is cut with a cutter (not shown). It can be omitted.

  Moreover, the deformation | transformation part formed partly for every coil round may be made to deform | transform so that a curvature may become larger than another site | part. In that case, the inner peripheral surface of the fixing ring has a shape partially bulging radially inward.

  As mentioned above, although an example of embodiment was demonstrated, this invention is not limited to this, Of course, it can change and change an aspect suitably.

It is a principal part side view of the coil wire shaping | molding apparatus of embodiment of this invention. It is principal part front sectional drawing of the coil wire shaping | molding apparatus of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shaft 2 Reel 4 Flyer 7 Mechanism board 10 Feed roller 11 Counter roller 13, 14 Coiling pin 16 Inner peripheral surface 17 Swelling part 18 Fixing ring 21 Ring inscribed roller 24 Feeding roller 25 Guide roller K Coiling mechanism S Wire rod W Coil Wire

Claims (3)

The wire wound around the reel on the shaft is fed out through a fryer that rotates around the shaft axis of the shaft, rotates integrally with the fryer, and reverses the rotation direction of the flyer with the shaft axis of the shaft as the center of curvature. By coiling a wire in the direction and forming a deformed portion with a partially changed curvature for each turn of the coil and feeding it into a coiling mechanism that feeds it, the center of the coil for each turn is displaced and becomes a flat band shape. A coil wire forming method, wherein the coil wire is formed in one step. A coil wire forming apparatus for forming a coil wire having a flat band shape by deviating a coil center for each turn in one process, a reel around which a wire is wound, a shaft on which the reel is mounted, an axis of the shaft A fryer that rotates around a core and feeds the wire wound on the reel; and a fryer that rotates integrally with the fryer and takes in the wire fed out through the fryer and takes the shaft core position of the shaft as the center of curvature. A coil wire forming apparatus comprising: a coiling mechanism that forms and sends out a deformed portion having a partially changed curvature for each turn of the coil while winding the coil in a direction opposite to the rotation direction of the coil. The coiling mechanism includes a feed roller that takes in and feeds a wire rod fed through the flyer while rotating integrally with the flyer, and a wire rod fed by the feed roller with the axial center position of the shaft as a center of curvature. A plurality of coiling pins that are arranged in a plurality of locations separated in the circumferential direction so as to bend along a curvature circle having a predetermined radius, and the predetermined radius whose inner peripheral surface is centered on the axis of the shaft. A fixing ring fixed to the apparatus main body in a shape partially bulging radially outward in a part of the circumferential direction based on a curvature circle having a larger curvature radius, and a part of the plurality of coiling pins The coiling pin has a roller for inscribed in the ring at the outer end, the roller is inscribed in the inner peripheral surface of the fixing ring, and can move forward and backward. The deformed portion is formed by fitting into the swollen portion of the inner peripheral surface of the fixing ring for each rotation of the wire and allowing the wire to partially escape to the outside in the coil radial direction for each turn of the coil. The coil wire forming apparatus according to claim 2.

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