JP2009023204A - Method and apparatus for manufacturing cord reinforcement body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for manufacturing cord reinforcement body capable of improving manufacturing accuracy of a cord reinforcement body which is arranged on a reinforcement object part. <P>SOLUTION: A cord C is fed to a circumferential part 18A of an index rotor 18, the index rotor 18 is rotated around a shaft line, at the same time, a disc 12 is rotated around the shaft line while causing a part of the disc 12 to face the circumferential part 18A of the index rotor 18 and, when the cord C is moved to an opposite position with the disc 12, the cord C is extruded from the circumferential part 18A of the index rotor 18 to the disc 12 and is attached to the disc 12 by a cord holder 62 and a hammer 64 which are retractable to the inside and outside of the circumferential part 18A of the index rotor 18. Therein, the cord C is held by a U-groove 62A formed by the cord holder 62 and is moved to a disc surface 12A. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cord reinforcing body manufacturing method and apparatus.

  In heavy-duty pneumatic radial tires and the like, the sidewall portion is reinforced using a cord reinforcement body such as a wire chafer to reduce the falling deformation of the bead portion and increase the durability of the bead portion (for example, patents) Reference 1).

  When forming such a sidewall portion, first, a sheet-like cord reinforcement body constituted by a cord and rubber is attached to the side inner peripheral side portion (annular reinforcement target portion) of the green tire on the tire core. The cord reinforcing body is formed in accordance with the shape, and then a pre-formed cord reinforcement is wound around a predetermined position of the lower layer member on the outer periphery of the forming drum when forming a green tire.

As another method, by arranging the cords cut to a predetermined length on the disk (annular cord attaching portion) along the circumferential direction, the annular cord reinforcement body is provided. A method may be considered in which the cord reinforcement is transferred from the disk to the inner peripheral side of the side surface of the green tire formed on the tire core.
Japanese Patent Laid-Open No. 5-112109

  By the way, the cord is stored in a state of being wound on a reel, and may have a curved wrinkle even after being cut into a predetermined length. In such a case, there is a problem that the accuracy of the code arrangement on the disk is lowered.

  In view of the above facts, an object of the present invention is to provide a cord reinforcing body manufacturing method and apparatus capable of improving the manufacturing accuracy of a cord reinforcing body disposed in a reinforcement target portion.

  In the cord reinforcing body manufacturing method according to claim 1, a cord supply step of supplying a cord to a position facing the cord adherence portion, and a cord moving member having a groove portion at a position facing the cord adherent portion, A cord moving step of moving the cord closer to the cord attaching portion by moving the cord to the cord attaching portion side in a state where the cord is fitted in the groove portion; and a cord crimping member from the groove portion side to the cord attaching portion. A cord reinforcing body composed of a plurality of cords is formed on the cord adherence portion by repeatedly performing a cord crimping step of extruding and crimping the cord from the groove portion to the cord adherence portion by moving to the side. It is characterized by doing.

  In the cord reinforcing body manufacturing method according to claim 1, in the cord supplying step, the cord is supplied to a position facing the cord attaching portion, and in the cord moving step, the cord is fitted into a groove provided in the cord moving member, In this state, the cord is moved closer to the cord attaching portion by moving the cord moving member toward the cord attaching portion. In the cord crimping step, the cord is pushed and crimped from the groove portion to the cord adherence portion by moving the cord crimping member from the groove portion side to the cord adherent portion side.

  By repeating the above steps, a plurality of cords are arranged on the cord attaching portion, and a cord reinforcing body in which a plurality of cords are arranged is formed on the cord attaching portion.

  Here, according to this manufacturing method, in the cord moving step, the cord is restrained by the groove portion to improve the linearity, and in this state, the cord is crimped to the cord attaching portion in the cord crimping step. Therefore, it is possible to arrange a plurality of cords with high accuracy on the cord attaching portion, and thus it is possible to improve the manufacturing accuracy of the cord reinforcing body.

  The cord reinforcing body manufacturing method according to claim 2 is the cord reinforcing body manufacturing method according to claim 1, wherein in the cord moving step, the cord moving member is separated from the cord attaching portion by a cord. The cord crimping step is performed when the cord is moved to a position equal to or less than the diameter of the cord.

  In the cord reinforcing body manufacturing method according to the second aspect, in the cord moving step, the cord crimping step is performed when the distance between the cord moving member and the cord attaching portion is equal to or less than the diameter of the cord. Therefore, in the cord crimping step, the cord can be prevented from dropping from between the cord moving member and the cord adherent portion, and the cord can be crimped to the cord adherent portion while maintaining the restraint by the groove portion. . Therefore, it is possible to further improve the manufacturing accuracy of the cord reinforcement body.

  The cord reinforcing body manufacturing method according to claim 3 is the cord reinforcing body manufacturing method according to claim 1 or 2, wherein in the cord moving step, the cord is attracted to the groove portion by a magnetic force. And

  In the cord reinforcing body manufacturing method according to the third aspect, the cord moving step is performed in a state where the cord is attracted to the groove portion by the magnetic force, whereby the restriction by the groove portion can be further strengthened.

  The cord reinforcing body manufacturing method according to claim 4 is the cord reinforcing body manufacturing method according to any one of claims 1 to 3, wherein in the cord supplying step, the cord is a peripheral portion of the rotating body. The cord is moved to a position facing the annular code attaching portion by rotating the rotating body around the axis, and in the cord moving step, the cord moving member is moved around the rotating body. The cord is moved closer to the cord adherence portion from the peripheral portion of the rotating body by moving the cord toward the cord adherent portion side, and the cord supplying step, the cord moving step, and the cord crimping step are performed. The cord reinforcing member is formed in the annular cord attaching portion by repeatedly performing the cord attaching portion while rotating around the axis.

  In the cord reinforcing body manufacturing method according to claim 4, in the cord supplying step, the cord is supplied to the peripheral portion of the rotating body, and the rotating body is rotated around the axis, whereby the cord is formed into an annular cord attaching portion. Move to the opposite position. In the cord moving step, the cord moving member in which the cord is fitted in the groove portion is moved from the peripheral portion of the rotating body to the cord attaching portion side, thereby causing the cord to approach the cord attaching portion, and the cord crimping step. To implement.

  By repeating the above steps while rotating the annular cord attaching portion around the axis, a plurality of cords are arranged on the annular cord attaching portion along the circumferential direction. An annular cord reinforcing body in which a plurality of cords are arranged along the circumferential direction of the cord attaching portion is formed on the annular cord attaching portion.

  Therefore, by transferring the annular cord reinforcement body from the code attaching portion to the annular reinforcement object portion, the annular cord reinforcement body can be disposed on the annular reinforcement object portion. In addition, when the annular cord attaching portion is the reinforcement target portion, the annular cord reinforcement body is disposed on the annular reinforcement subject portion by attaching a plurality of cords to the cord attaching portion. it can.

  Here, according to this manufacturing method, various widths, code pitches, and the like vary depending on the adjustment of the length of the cord supplied to the peripheral portion of the rotating body, the adjustment of the rotational speed of the rotating body and the code attaching portion, and the like. An annular cord reinforcement body can be formed, and can correspond to various annular reinforcement target parts having different shapes. In addition, the annular cord reinforcement can be disposed in the annular reinforcement target portion without any stress in the circumferential direction.

  Therefore, it is possible to improve the production efficiency of the annular cord reinforcement disposed in the annular reinforcement target portion and improve the manufacturing accuracy of the cord reinforcement.

  The cord reinforcing body manufacturing apparatus according to claim 5, comprising: a cord supplying unit that feeds the cord to a position facing the cord attaching portion; and a groove portion into which the cord is fitted; the cord is held by the groove portion; A cord moving member that approaches the adherend portion and a cord crimping member that pushes and crimps the cord from the groove portion to the cord adherent portion.

  In the cord reinforcing body manufacturing apparatus according to claim 5, the cord supplying means supplies the cord to a position facing the cord attaching portion, and the cord moving member holds the cord in a state where the cord is fitted in the groove portion, Approach the cord adherent. Then, the cord crimping member pushes and crimps the cord from the groove portion to the cord adherent portion.

  By repeatedly performing the above steps, a plurality of cords are arranged on the cord attaching portion, and a cord reinforcement body in which a plurality of cords are arranged is formed on the cord attaching portion. The

  Here, according to this manufacturing apparatus, the cord is crimped to the cord application portion by the cord crimping member in a state where the cord is restrained by the groove portion of the cord moving member and the linearity is enhanced. Therefore, it is possible to arrange a plurality of cords with high accuracy on the cord attaching portion, and thus it is possible to improve the manufacturing accuracy of the cord reinforcing body.

  The cord reinforcing body manufacturing apparatus according to claim 6 is the cord reinforcing body manufacturing apparatus according to claim 5, wherein the cord crimping member is formed by the cord moving member including the groove portion and the cord attaching portion. The cord is pushed out from the groove portion to the cord adherence portion when it is moved to a position where the distance is equal to or less than the diameter of the cord.

  In the cord reinforcing body manufacturing apparatus according to claim 6, when the distance between the groove portion and the cord attaching portion is equal to or less than the diameter of the cord due to the movement of the cord moving member, the cord crimping member removes the cord from the groove portion to the cord covering portion. Extrusion and crimping to the landing part. Therefore, when the cord crimping member crimps the cord to the cord attaching portion, the cord can be prevented from dropping from between the groove portion and the cord attaching portion, and the restrained state by the groove portion can be maintained.

  The cord reinforcing body manufacturing apparatus according to claim 7 is the cord reinforcing body manufacturing apparatus according to claim 5 or 6, wherein a magnet that attracts the cord to the groove portion is provided in the cord moving member. It is characterized by.

  In the cord reinforcing body manufacturing apparatus according to claim 7, the cord moving member is moved to the cord attaching portion side in a state where the cord is attracted to the groove portion by magnetic force, so that the restriction by the groove portion can be further strengthened. it can.

  The cord reinforcing body manufacturing apparatus according to claim 8 is the cord reinforcing body manufacturing apparatus according to any one of claims 5 to 7, wherein the ring-shaped cord attaching portion is a part thereof. A code adherence rotating means that rotates around the axis so as to face the periphery of the rotating body, and the code supplying means includes a rotating body that rotates around the axis, and a code on the periphery of the rotating body. A cord supply mechanism for supplying the cord, and the cord moving member can be moved in and out of the periphery of the rotating body, and the cord crimping member can move in the protruding and protruding direction of the cord holding member. It is provided in.

  In the cord reinforcing body manufacturing apparatus according to claim 8, the cord supply mechanism supplies the cord to the peripheral portion of the rotating body, and the rotating body rotates around the axis, whereby the cord has an annular cord attaching portion. Is moved to the opposite position. The cord moving member holds the cord in a state where the cord is fitted into the groove portion and protrudes to the outside of the peripheral portion of the rotating body, whereby the cord is brought close to the cord attaching portion, and the cord crimping member is By the relative movement in the protruding direction above, the cord is pushed out from the groove portion to the cord adherence portion and is crimped.

  By repeating the above process while rotating the annular cord attaching portion around the axis by the cord attaching portion rotating means, a plurality of cords are arranged on the annular cord attaching portion in the circumferential direction. A ring-shaped cord reinforcing body in which a plurality of cords are arranged along the circumferential direction of the cord attaching portion is formed on the annular cord attaching portion.

  Therefore, by transferring the annular cord reinforcement body from the code attaching portion to the annular reinforcement object portion, the annular cord reinforcement body can be disposed on the annular reinforcement object portion. In addition, when the annular cord attaching portion is the reinforcement target portion, the annular cord reinforcing body can be disposed on the annular reinforcement subject portion by attaching the cord to the cord attaching portion.

  Here, according to this manufacturing apparatus, various widths, code pitches, and the like vary depending on the adjustment of the length of the cord supplied to the peripheral portion of the rotating body, the adjustment of the rotational speed of the rotating body and the code attaching portion, and the like. An annular cord reinforcing body can be formed, and it can respond to various annular reinforcing objects having different shapes. In addition, the annular cord reinforcement can be disposed in the annular reinforcement target portion without any stress in the circumferential direction.

  Therefore, it is possible to improve the production efficiency of the annular cord reinforcement disposed in the annular reinforcement target portion and improve the manufacturing accuracy of the cord reinforcement.

  As described above, according to the present invention, it is possible to provide a method and an apparatus for manufacturing a cord reinforcement capable of improving the manufacturing accuracy of the cord reinforcement disposed in the reinforcement target portion.

  Next, an embodiment of a cord reinforcing body manufacturing method and apparatus according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the cord reinforcing body manufacturing apparatus 10 attaches a large number of steel cords (insulation cords) C whose surfaces are covered with rubber to the disk surface 12A (cord attachment portion) of the disk 12. Thus, an annular cord reinforcement 14 (see FIG. 2) is formed on the disk 12. The annular cord reinforcement body 14 formed on the disk 12 is transferred to a sidewall portion of a green tire (raw tire) as an annular reinforcement target portion.

  The cord reinforcing body manufacturing apparatus 10 holds a disc 12 and rotates a disc rotating mechanism (code adhering portion rotating means) 16 that rotates around its axis, and a cord supply unit that supplies the cord C to a position facing the disc 12. (Cord supply means) 17, a code pushing mechanism 22 (see FIGS. 5 to 10) that pushes the code C to the disk 12, and a rotor rotating mechanism (rotating body rotating means) 80.

  The cord supply unit 17 includes an index rotor (rotary body) 18 disposed with a peripheral portion facing a part of the board surface 12 </ b> A, and a cord supply mechanism 20 that supplies the code C to the index rotor 18.

  The disc rotating mechanism 16 includes a conical disc holding portion 24, a rotating shaft 26 inserted through the disc holding portion 24 along the axis thereof, and extending from the top of the disc holding portion 24 to the opposite side of the bottom, and a rotating shaft. And a servo motor (drive means) 28 for rotating the index 26.

  The disk holding part 24 holds the disk 12 so as to be rotatable around the rotation shaft 26 by its bottom surface 24A. The servo motor 28 is controlled by a control unit (not shown), and is rotated at a predetermined speed during manufacture of the cord reinforcement body 14.

  The index rotor 18 is a cylindrical drum, and is arranged such that one end side of the axial direction (hereinafter referred to as the rotor axial direction) overlaps with a part of the board surface 12A when viewed in the normal direction of the board surface 12A. Yes. That is, one end side in the rotor axial direction of the peripheral portion 18A of the index rotor 18 faces a part of the board surface 12A. Further, the other end side in the axial direction of the index rotor 18 is rotatably supported by the support portion 30.

  Note that the rotation axis of the index rotor 18 is arranged in a substantially horizontal direction above the rotation center of the disk 12. Here, the position of the rotation axis of the index rotor 18 may be lower than the rotation center of the disk 12, and the angle can be arbitrarily set.

  A plurality of V-shaped grooves 18B extending in the rotor axial direction are formed at one end side in the rotor axial direction of the circumferential portion 18A at a predetermined pitch in the circumferential direction of the index rotor 18 (hereinafter referred to as the rotor circumferential direction). Has been.

  As shown in FIG. 3, a plurality of magnets 19 are arranged in the index rotor 18 along the rotor circumferential direction and the rotor axial direction. Each magnet 19 is disposed so as to overlap with each groove 18B when viewed from the radial direction of the index rotor 18, and magnetically attracts the metal member dropped into each groove 18B.

  Further, as shown in FIG. 1, the cord supply mechanism 20 unwinds the cord C wound on a reel (not shown) from the reel, and is behind the index rotor 18 (on the opposite side of the disk 12). (Hereinafter, referred to as the rotor rear side), a cord transport mechanism 32 that feeds along the rotor axial direction, a cutter 34 (see FIG. 4) that cuts the cord C fed by the cord transport mechanism 32 into a predetermined length, and a predetermined length A cord pushing mechanism 36 that pushes the cord C that has been cut into the groove 18B of the peripheral portion 18A is provided.

  The cord C is wound around an axis extending in the longitudinal direction of the rotor with respect to the reel, and the curled wrinkles in the vertical direction of the rotor remain in the cord C after being unwound from the reel. ing.

  The cord transport mechanism 32 includes a pulley 38 disposed on the other axial end side of the index rotor 18 and the upper rear side of the index rotor 18, a pulley 40 disposed on one end side of the index rotor 18 in the axial direction and the upper rear side of the rotor, and a pulley. And a servo motor (driving means) 42 for rotating 40.

  The pulleys 38 and 40 are arranged in parallel along the rotor shaft direction, and are arranged so that the rotation shafts are substantially parallel to each other and substantially parallel to the rotation shaft 26 described above. The reel side of the cord C is wound around the pulley 38.

  That is, when the pulley 40 is rotated by the servo motor 42, the cord C is unwound from the reel and is sent to the rear side of the index rotor 18 along the rotor axial direction.

  As shown in FIGS. 1 and 5 to 8, on the rear side of the index rotor 18, a rectangular plate-like table 44 whose longitudinal direction is the rotor axial direction is substantially horizontal and the circumferential portion 18 </ b> A of the index rotor 18. Is disposed to face one end side in the axial direction.

  Here, the lowermost part of the pulley 40 is disposed so as to face the upper surface 44A of the table 44 vertically with a slight gap when viewed from the rotor axial direction, and the cord C is sent out from the pulley 40 onto the table 44. It is supposed to be.

  Further, as shown in FIG. 4, the cutter 34 is disposed at the upstream end portion in the code conveying direction on the table 44, and cuts the code C sent from the pulley 40 onto the table 44.

  1 and 9A and 9B, the cord pushing mechanism 36 includes a pushing plate 46, a slider 50 that slidably supports the pushing plate 46, and an oscillating mechanism that slides the slider 50. And a gear unit (pushing drive unit, see FIG. 1) 52.

  The pushing plate 46 is a rectangular plate extending along the longitudinal direction on the table 44, and one end side in the width direction (index rotor 18 side) is gradually thinned from the center side in the width direction to one end side. It is formed in a tapered shape.

  The slider 50 is a rectangular plate material supported on a pedestal 48 (see FIG. 10) so as to be slidable in a substantially horizontal direction and a direction substantially perpendicular to the rotor axial direction (hereinafter referred to as the rotor longitudinal direction). ing. The slider 50 is disposed on the upper side of the table 44 so that its longitudinal direction is substantially parallel to the rotor axial direction and partially overlaps with the index rotor 18 in plan view.

  Here, the slider 50 is formed with a rectangular hole 50A that overlaps with the table 44 and a part of the index rotor 18 on the table 44 side in plan view. The rectangular hole 50A extends to the outside of both ends in the axial direction of the index rotor 18 with its longitudinal direction being substantially parallel to the rotor axial direction.

  That is, the slider 50 includes a base portion 50B that extends in the rotor axial direction on the rear side of the index rotor 18, a rotor insertion portion 50C that is inserted into the index rotor 18 and extends to the outside of both axial ends. A connecting portion 50D that connects the longitudinal ends of the base portion 50B and the rotor insertion portion 50C is provided.

  The pushing plate 46 is disposed in the hole 50A and is fixed to the base portion 50B. That is, as the slider 50 slides, the pushing plate 46 comes into contact with and separates from one end side in the axial direction of the index rotor 18.

  In addition, as shown in FIG. 1, the oscillating gear unit 52 is disposed below the slider 50. The oscillating gear unit 52 is provided on an oscillating gear (not shown), a gear box 54 that accommodates the oscillating gear, and an upper surface 54A of the gear box 54, and an oscillating gear output shaft 58 (FIG. 9A), (See (B)) and a link arm 56 (see FIGS. 9A and 9B) having one end in the longitudinal direction fixed thereto. As shown in FIG. 9, the output shaft 58 extends from the upper surface 54 </ b> A toward the upper base portion 50 </ b> B, and the link arm 56 is rotatable around the output shaft 58.

  A pin 60 protruding upward is provided at the other longitudinal end of the link arm 56. On the other hand, an elongated hole 62 into which the pin 60 is slidably fitted is formed in the base portion 50B. The long hole 62 extends in the longitudinal direction of the base portion 50B. For this reason, when the link arm 56 rotates around the output shaft 58, the base portion 50B slides in the front-rear direction of the rotor.

  Specifically, as shown in FIG. 9A, when the link arm 56 rotates counterclockwise in the figure (the pin 60 is displaced from the rotor rear side of the output shaft 58 to the rotor front side), The base portion 50B moves to the index rotor 18 side, and the link arm 56 rotates in the clockwise direction in the drawing as shown in FIG. 9B (the pin 60 is displaced from the rotor front side to the rear side of the output shaft 58). When rotating, the base portion 50B moves to the side away from the index rotor 18.

  As shown in FIGS. 5 to 10, the cord pushing mechanism 22 includes a plurality of cord pushing members 61 arranged along the longitudinal direction of the rotor insertion portion 50 </ b> C. Each cord extruding member 61 includes a cord holder (crimping rod, cord moving member) 62 extending in the rotor radial direction, and a plurality of hammers (crimping rod, cord crimping member) 64 disposed on the cord holder 62. ing. Further, the cord pushing mechanism 22 is provided with an interlocking mechanism 66 (see FIG. 10) for interlocking the cord holder 62 and the hammer 64, the slider 50, and the oscillating gear unit 52 (see FIG. 1). .

  The cord holder 62 and the hammer 64 are rods extending substantially horizontally and in the rotor radial direction in the central portion in the vertical direction in the index rotor 18, and the cord holder 62 is fixed on the rotor insertion portion 50C. The cord holder 62 is slidably supported along the axial direction.

  As shown in FIGS. 5 and 9A, when the slider 50 is retracted (a state where the slider 50 is slid to the maximum on the rear side of the rotor), the entire cord holder 62 and hammer 64 are accommodated in the index rotor 18. . Further, as shown in FIGS. 7 and 9B, when the slider 50 moves forward (a state in which the slider 50 is slid to the maximum on the front side of the rotor), the tip ends of the cord holder 62 and the hammer 64 are arranged around the index rotor 18. Projecting from the portion 18A toward the board surface 12A.

  Here, the peripheral portion 18A of the index rotor 18 is formed with a plurality of holes 18C through which the respective cord holders 62 and hammers 64 can be inserted so as to be able to be inserted therethrough. The tips of the holder 62 and the hammer 64 protrude from the hole 18C toward the board surface 12A.

  As shown in FIG. 10, the interlocking mechanism 66 extends on the rotor shaft direction, and is supported on the slider 68 supported by the rotor insertion portion 50 </ b> C so as to be slidable along the moving direction of the slider 50, and on each hammer 64. A plurality of L-shaped angles 70 (see FIGS. 5 to 8) arranged one by one, a link arm 72 connected to one longitudinal end of the slider 68, and a link arm 74 connected to the link arm 72. And.

  The slider 68 has a pair of side plates 68A disposed at both ends in the longitudinal direction and a pair of side plates 68A. The base plate 68B has a U-shaped cross section when viewed in the rotor axial direction (see FIGS. 5 to 8). It is comprised by. As shown in FIGS. 5 to 8, the base plate 68 </ b> B is disposed substantially horizontally and opens downward.

  A pair of standing wall portions 68C provided at both ends in the width direction of the base plate 68B are opposed to the longitudinal direction of the rotor, and a plurality of spring plungers 76 are disposed on the standing wall portion 68C provided on the rotor rear side. Arranged along the axial direction. Each spring plunger 76 is superposed vertically with each hammer 64, and a spring portion 76A that can be elastically deformed (elastically expanded and contracted) in the moving direction of the hammer 64 protrudes forward of the rotor.

  The L-shaped angle 70 is fixed on the hammer 64, and the non-joining side portion 70A protrudes upward. The non-joint side portion 70A of the L-shaped angle is disposed between the pair of standing wall portions 68C of the base plate 68B so as to be in contact with the spring portion 76A of the spring plunger 76.

  As shown in FIG. 10, one end portion in the longitudinal direction of the link arm 72 is rotatably connected to a rotation shaft 72 </ b> A erected outward from the side plate 68 </ b> A in the rotor axial direction, and the other end portion in the longitudinal direction of the link arm 72. And one end portion in the longitudinal direction of the link arm 74 are coupled to each other by a rotary shaft 73 extending along the rotor axial direction so as to be relatively rotatable. Further, the other end portion in the longitudinal direction of the link arm 74 is rotatably supported by a rotating shaft 74A extending along the rotor axial direction on the lower rear side of the index rotor 18.

  Further, a long hole 74B extending along the longitudinal direction of the link arm 74 is formed on one end side in the longitudinal direction of the link arm 74, and the side plate 50E of the slider 50 is slidably fitted in the long hole 74B. A pin 78 is projected, and the slide arm 50 rotates the link arm 74 around the rotation shaft 74A, and the slider 68 slides.

  As shown in FIGS. 5 and 8, when the slider 50 and the cord holder 62 are retracted to the maximum, the hammer 64 is retracted to the maximum. In this state, the spring portion 76A of the spring plunger 76 is separated from the non-joining side portion 70A of the L-shaped angle 70, and the standing wall portion 68C on the rotor front side (disk 12 side) of the base plate 68B is not joined to the L-shaped angle 70. It contacts the side portion 70A.

  On the other hand, as shown in FIG. 7, when the slider 50 and the cord holder 62 are advanced to the maximum, the hammer 64 is advanced to the maximum. In this state, the tip end portion of the cord holder 62 and the board surface 12A abut. Further, the spring portion 76A of the spring plunger 76 comes into contact with the non-joining side portion 70A while being elastically deformed.

  Further, as shown in FIGS. 5 to 8, a U-groove (groove portion) 62 </ b> A into which the cord C can be inserted is formed at the distal end portion (end portion on the disk 12 side) of the cord holder 62 that is a long bar. It is formed along the rotor longitudinal direction. The width of the U groove 62A is slightly wider than the diameter of the cord C, and the U groove 62A and the cord C can be loosely fitted. Further, the depth of the U groove 62A is made deeper than the cord C. Therefore, the code C can be held by the plurality of U grooves 62 arranged along the code C.

  A magnet 63 is disposed close to the bottom of the U groove 62A of the cord holder 62, and the code C is attracted to the bottom of the U groove 62A by the magnetic force of the magnet 63.

  Further, as shown in FIG. 5, the hammer 64 is shorter than the cord holder 62, and in a state where the cord holder 62 is retracted to the maximum, the U groove 62 </ b> A is formed at the tip of the hammer 64 (the rotor front side end). Part). Further, when the cord holder 62 is advanced, the hammer 64 is relatively positioned relative to the code holder 62 so that the tip of the hammer 64 reaches the bottom of the groove 18B after the bottom of the U groove 62A passes the position of the bottom of the groove 18B. The amount of movement is set.

  Further, as shown in FIG. 6, when the distance between the distal end portion of the cord holder 62 (the open end portion of the U groove 62A) and the board surface 12A becomes a predetermined value less than the diameter of the cord C, the distal end portion of the hammer 64 The relative movement amount of the hammer 64 with respect to the cord holder 62 is set so that passes through the position of the bottom of the U groove 62A.

  Further, as shown in FIG. 7, when the tip of the cord holder 62 comes into contact with the board surface 12A, the distance between the tip of the hammer 64 and the board surface 12A becomes a predetermined value less than the diameter of the cord C. A relative movement amount of the hammer 64 with respect to the cord holder 62 is set.

  As shown in FIG. 1, the rotor rotation mechanism 80 includes a servo motor (driving means) 82, an index gear unit 84, a drive transmission unit 86 that transmits the output of the servo motor 82 to the index gear unit 84, and an index. And a drive transmission unit 88 that transmits the output of the gear unit 84 to the index rotor 18.

  The servo motor 82 is controlled by a control unit (not shown), and is rotated at a predetermined speed during manufacture of the cord reinforcement body 14. Further, the drive transmission unit 86 includes a pulley 90 fixed to the output shaft 82A of the servo motor 82, a pulley (not shown) fixed to the input shaft (not shown) of the index gear unit 84, and windings around these pulleys. And a timing belt 92 that is hung.

  The index gear unit 84 includes an index gear (not shown) and a gear box 94 that houses the index gear, and extends in the rotor axial direction by the driving force transmitted from the drive transmission unit 86. The first output shaft (not shown) is index-rotated, and the second output shaft 96 extending in the longitudinal direction of the rotor is continuously rotated at a constant speed.

  Here, the output from the second output shaft 96 is transmitted to the above-described oscillating gear by the drive transmission unit 102. The drive transmission unit 102 is wound around a pulley 104 fixed to the second output shaft 96, a pulley 108 fixed to an input shaft 106 extending in the longitudinal direction of the rotor of the oscillating gear, and the pulleys 104 and 108. A timing belt 110.

  The drive transmission unit 88 includes a pulley (not shown) fixed to the first output shaft, a pulley (not shown) disposed at the other axial end of the index rotor 18, and windings around these pulleys. A timing belt 98 is provided.

  Next, the operation in this embodiment will be described.

  At the time of manufacturing the cord reinforcing body 14, the servo motor 42 is driven, and the cord C is unwound from the reel and supplied onto the table 44 on the rear side of the index rotor 18. As shown in FIG. 4, when the leading end of the code C is sent to a predetermined position of the table 44 by the code transport mechanism 32, the cutter 34 is operated. As a result, a code C having a predetermined length is set on the table 44. Since the cut code C is supplied to the index rotor 18 as will be described later, after the supply time has elapsed (after the pushed-in push plate 46 has moved backward), the code transport mechanism 32 is actuated again, and the code C Supply and cutting of the code C by the cutter 34 is performed.

  Further, as shown in FIG. 1, the servomotors 28 and 82 are continuously driven during the manufacture of the cord reinforcement body 14. By driving the servo motor 28, the disk 12 is index-rotated around the rotating shaft 26 extending in the front-rear direction of the rotor.

  The drive of the servo motor 82 is transmitted to the index gear by the drive transmission unit 86, and the index gear is rotated. As a result, the first output shaft extending in the rotor axis direction is index rotated, and the second output shaft 96 extending in the rotor front-rear direction is continuously rotated at a constant speed.

  The index rotation of the first output shaft is transmitted to the index rotor 18 via the drive transmission unit 88, and the index rotor 18 is index rotated. Further, the continuous rotation of the second output shaft 96 is transmitted to the oscillating gear via the drive transmission unit 102, and the oscillating gear is rotated.

  As a result, as shown in FIGS. 5 to 8, the slider 50 is slid in the longitudinal direction of the rotor, the pushing plate 46 is moved forward and backward with respect to the index rotor 18, and the cord holder 62 and the hammer 64 are moved to the disk surface of the disk 12. Move forward and backward with respect to 12A.

  The number of stops per rotation of the index rotor 18 is the same as the number of grooves 18B, and the feed pitch of the index rotor 18 is the same as the pitch of the grooves 18B. When the index rotor 18 stops, one groove 18B on the rotor rear side faces the upper surface 44A of the table 44 substantially horizontally, and one groove 18B on the rotor front side faces the disk surface 12A of the disk 12 substantially horizontally. To do. Thereby, the code C is supplied to the position facing the board surface 12A.

  Here, the slider 50 is connected to the servo motor 82 via an oscillating gear, an index gear, or the like, and the index rotor 18 is connected to the servo motor 82 via an index gear or the like. The rotation of the rotor 18 is mechanically synchronized.

  At that time, the slider 50 stands by at the retracted position when the index rotor 18 rotates (see FIG. 5), and moves forward and backward when the index rotor 18 stops (see FIGS. 6 to 8). When the slider 50 stands by at the retracted position, the pushing plate 46 stands by behind the cord C on the rotor rear side, and the cord holder 62 and the hammer 64 stand by within the index rotor 18.

  When the slider 50 moves forward, the pushing plate 46 moves forward toward the groove 18B and pushes the cord C on the table 44 into the groove 18B. The code C pushed into the groove 18B is held in the groove 18B by the magnetic force of the magnet 19 embedded in the index rotor 18. Further, the advancement of the slider 50 causes the cord holder 62 and the hammer 64 to advance and cause the tip portion to protrude from the hole 18C toward the board surface 12A.

  As shown in FIG. 5, when the slider 50 stands by in the retracted position, the U groove 62 </ b> A provided at the tip portion of the cord holder 62 is positioned on the rotor front side from the tip portion of the hammer 64. As shown in FIG. 6, the link arm 74 is rotated forward by the forward movement of the slider 50, and the rotational force of the link arm 74 acts on the slider 68 via the link arm 72. Advance.

  When the slider 68 advances, the spring portion 76A of the spring plunger 76 comes into contact with the non-joining side portion 70A of the L-shaped angle 70 and pushes the hammer 64 forward of the rotor. Thereby, the hammer 64 moves relative to the cord holder 62 toward the rotor front side.

  Here, the rotation radius R1 of the rotary shaft 73 connecting the link arm 74 and the link arm 72 is larger than the rotation radius R2 of the long hole 74B formed in the link arm 74, and the rotation radius R1 is increased when the slider 50 moves forward. The advance amount of the shaft 73 is larger than the advance amount of the pin 78.

  Thereby, when the slider 50 moves forward, the advance amount of the slider 68 becomes larger than the advance amount of the slider 50, so that the advance amount of the hammer 64 by the advance of the slider 68 is the advance amount of the cord holder 62 by the advance of the slider 50. Bigger than.

  For this reason, when the slider 50 moves forward, the tip of the hammer 64 that was initially located on the rotor rear side with respect to the U groove 62A moves halfway beyond the position of the U groove 62A to the rotor front side. Specifically, after the bottom of the U groove 62A exceeds the position of the bottom of the groove 18B, the tip of the hammer 64 reaches the bottom of the groove 18B, and as shown in FIG. 6, the tip of the cord holder 62 and the board surface 12A When the distance between and reaches a predetermined value less than the diameter of the cord C, the tip of the hammer 64 reaches the position of the bottom of the U groove 62A. As shown in FIG. 7, when the tip of the cord holder 62 comes into contact with the board surface 12A, the distance between the tip of the hammer 64 and the board surface 12A becomes a predetermined value less than the diameter of the cord C.

  That is, when the slider 50 moves forward, first, the cord C is held by the U groove 62A while the cord holder 62 moves forward. At this time, the cord C is attracted to the bottom of the U groove 62 </ b> A by the magnetic force of the magnet 63. Then, as shown in FIG. 6, when the distance between the cord holder 62 and the board surface 12A becomes narrow enough to prevent the cord C from falling between them, the hammer 64 abuts against the cord C while moving forward, as shown in FIG. Thus, the code C is pushed out to the board surface 12A as it is.

  Thereafter, the slider 68 moves forward by a predetermined amount in a state where the spring portion 76A is elastically deformed (compressed), whereby the cord C is pressed against the board surface 12A by the hammer 64.

  On the other hand, the disk 12A is rotated around the rotating shaft 26 extending in the longitudinal direction of the rotor, and the portion of the disk surface 12A where the code C is not yet attached faces the code holder 62 and the hammer 64 substantially horizontally. Sequentially supplied to the position to perform.

  The supply process of the code C to the groove 18B, the movement process of the code C by the rotation of the index rotor 18, the rotation process of the disk 12, and the extrusion process of the code C from the groove 18B to the disk surface 12 are repeatedly performed. Thus, a plurality of cords C are arranged along the circumferential direction on the board surface 12A, and a plurality of cords C are arranged along the circumferential direction of the annular board surface 12A. The body 14 (see FIG. 2) is formed on the annular disk surface 12A.

  Here, the servo motors 28 and 82 are controlled so that the rotation of the disk 12 and the rotation of the index rotor 18 are synchronized. That is, the disk 12 is rotated by one pitch of the code C while the index rotor 18 is rotated by one pitch of the groove 18B. As a result, the cord reinforcement body 14 in which the cords C are arranged annularly at a desired pitch is formed on the board surface 12A.

  By transferring the cord reinforcement body 14 from the disk 12 to the sidewall portion (not shown) of the green tire, the cord reinforcement body 14 in which the cords C are annularly arranged at a desired pitch is disposed on the sidewall portion. be able to.

  By the way, in the present embodiment, the cord C wound around the reel extending about the axis extending in the longitudinal direction of the rotor with respect to the reel is unwound and supplied to the rear side of the index rotor 18 and cut into a predetermined length. is doing. For this reason, the curled ridges in the vertical direction of the rotor remain in the cord C cut into a predetermined length and pushed into the groove 18B of the index rotor 18.

  The cord C held by the index rotor 18 is adsorbed by the magnetic force of the magnet 19 in a groove 18B extending along the rotor axial direction, thereby correcting the curved wrinkles. And the code | cord | chord C hold | maintained with the some code | cord | chord holder 62 paralleled along the rotor axial direction is restrained in several places by the U groove | channel 62A which has a groove wall up and down, and the said curved wrinkles are corrected. The cord C is pressure-bonded to the board surface 12A by the hammer 64 in a state where the curved wrinkles are corrected by the U groove 62A.

  Therefore, it is possible to press the cord C to the board surface 12 with high linearity, and thereby, it becomes possible to arrange a plurality of cords C on the board surface 12A with high accuracy. The manufacturing accuracy of the cord reinforcement 14 can be improved.

  Further, when the gap between the opening end of the U groove 62A and the board surface 12A becomes equal to or smaller than the diameter of the cord C, the cord C is pushed out from the U groove 62A to the board surface 12A by the hammer 64, so that the U groove The fall of the code | cord | chord C from between 62A and the board surface 12A can be prevented.

  Further, the cord C is attracted to the bottom of the U groove 62A by the magnetic force of the magnet 62, whereby the restraint of the cord C by the U groove 62A can be made stronger, and the vertical curl of the code C can be more effectively corrected. . Therefore, it is possible to further improve the manufacturing accuracy of the cord reinforcement body 14.

  Further, according to the present embodiment, the length of the cord C that is sequentially supplied to the peripheral portion 18A of the index rotor 18, the adjustment of the rotation speed of the index rotor 18 and the disk 12, and the index rotor 18 with respect to the disk 12 are adjusted. By adjusting the relative position and the like, various cord reinforcement bodies 14 having different widths, pitches of the cords C, and the like can be disposed, and various tires having different shapes can be handled. Moreover, the cord reinforcement body 14 can be arrange | positioned in the state which does not have the stress to the circumferential direction in the sidewall part of a green tire.

  Therefore, the production efficiency of the cord reinforcement body 14 disposed on the sidewall portion of the tire can be improved, the manufacturing accuracy of the cord reinforcement body 14 can be improved, and the uniformity of the sidewall portion can be improved. Further, it is possible to eliminate the need for large-scale equipment such as a calendar and a wisdom machine used for manufacturing the wire chafer.

  Further, the index rotor 18 is rotated about a rotation axis extending in a substantially horizontal direction above the rotation center of the disk 12. For this reason, as shown in FIG. 2, the cord C constituting the cord reinforcing body 14 is inclined in the circumferential direction with respect to the radial direction of the disk 12. Therefore, compared with the case where the cord C is disposed along the radial direction of the disk 12, the pitch difference of the cord C between the radially inner side and the radially outer side can be reduced, and the radially inner side and the diameter of the cord reinforcing body 14 can be reduced. The strength difference from the outside in the direction can be reduced.

  Further, the index rotation of the index rotor 18 and the advance and retreat of the cord holder 62 and the hammer 64 are mechanically synchronized, and when the index rotor 18 is stopped, the code holder 62 and the hammer 64 advance and retreat, and the retreat operation ends. After that, the index rotor 18 is configured to perform index rotation.

  Thereby, no matter how high the rotational speed of the index rotor 18 and the operating speed of the cord holder 62 and the hammer 64 can be prevented, the mechanical interference between the index rotor 18 and the cord holder 62 and the hammer 64 can be prevented. The productivity of the reinforcing body 14 can be improved.

  Further, the forward and backward movements of the cord holder 62 and the hammer 64 and the forward and backward movements of the push-in plate 46 are mechanically synchronized, so that the rotation speed of the index rotor 18 and the cord holder 62 and the hammer 64 are increased. No matter how high the operating speed and the operating speed of the pushing plate 46 can be, mechanical interference between the index rotor 18 and the pushing plate 46 can be prevented, so that the productivity of the cord reinforcement 14 can be improved.

  The slider 68 is configured to advance by a predetermined amount in a state where the spring portion 76A is elastically deformed (compressed), whereby the cord C is pressed against the board surface 12A by the hammer 64. Is automatically adjusted according to the position of the board surface 12A, so that the non-uniformity of the crimping force can be improved even if the object to be crimped has irregularities, and the non-uniformity of the adhesion state of the code C on the board surface 12A in this case can be improved. Can improve.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in this embodiment, the cord reinforcement body 14 is formed on the disk 12 by the cord reinforcement body manufacturing apparatus 10 and then the cord reinforcement body 14 is transferred from the disk 12 to the sidewall portion. The cord reinforcement 14 may be directly formed on the sidewall portion by the device 10. Moreover, in this embodiment, although the cord reinforcement body 14 was formed in the sidewall part, you may form it in other reinforcement object parts, such as a peripheral part of a tire.

  Further, in the present embodiment, the cord C is temporarily held by the index rotor 18 as a rotating body, and the cord C is pushed out from the index rotor 18 to the board surface 12A as the cord adherence portion as an example. Although the invention has been described, the present invention can also be applied to an apparatus having a configuration in which the cord C is directly supplied to a position facing the cord attaching portion, cut into a predetermined length, and then crimped to the cord attaching portion. In addition, it is not essential that the cord attaching portion is annular.

It is a perspective view which shows the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention. It is an enlarged plan view which shows the cord reinforcement manufactured by the cord reinforcement manufacturing apparatus which concerns on one Embodiment of this invention. It is sectional drawing which shows the index rotor with which the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention was equipped. It is a perspective view which shows the cord supply part with which the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention was equipped. It is a sectional side view which shows the peripheral part of the index rotor with which the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention was equipped. It is a sectional side view which shows the peripheral part of the index rotor with which the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention was equipped. It is a sectional side view which shows the peripheral part of the index rotor with which the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention was equipped. It is a sectional side view which shows the peripheral part of the index rotor with which the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention was equipped. (A), (B) is a top view which shows the peripheral part of the index rotor with which the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention was equipped. It is a side view which shows the peripheral part of the index rotor with which the cord reinforcement body manufacturing apparatus which concerns on one Embodiment of this invention was equipped.

Explanation of symbols

10 Cord reinforcement manufacturing apparatus 12A Board surface (Cord adherence part)
14 Cord reinforcement 16 Disk rotating mechanism (Cord adherent rotating means)
17 Code supply unit (code supply means)
18 Index rotor (rotary body)
18A Circumferential portion 20 Cord supply mechanism 62 Cord holder (code moving member)
63 Magnet 64 Hammer (Cord crimping member)
C code

Claims (8)

A cord supply step for supplying the cord to a position facing the cord application portion;
By moving a cord moving member having a groove portion toward the cord adherent portion with the cord fitted in the groove portion at a position facing the cord adherent portion, the cord approaches the cord adherent portion. A code movement process
A cord crimping step of pushing and crimping a cord from the groove to the cord adherent by moving the cord crimping member from the groove to the cord adherent;
By repeating the above, a cord reinforcing body made of a plurality of cords is formed on the cord attaching portion.   2. The cord crimping step is performed in the cord moving step when the cord moving member is moved to a position where an interval between the cord moving member and the cord attaching portion is equal to or less than a diameter of the cord. The cord reinforcement manufacturing method as described in 2.   The cord reinforcing body manufacturing method according to claim 1 or 2, wherein in the cord moving step, the cord is attracted to the groove portion by a magnetic force. In the cord supplying step, the cord is supplied to the peripheral portion of the rotating body, and the rotating body is rotated around the axis, thereby moving the cord to a position facing the annular code attaching portion,
In the cord moving step, the cord is moved from the peripheral portion of the rotating body to the cord attaching portion by moving the cord moving member from the peripheral portion of the rotating body to the cord attaching portion side,
The cord reinforcing body is formed on the annular cord attaching portion by repeatedly performing the cord supplying step, the cord moving step, and the cord crimping step while rotating the cord attaching portion around an axis. The cord reinforcing body manufacturing method according to any one of claims 1 to 3, wherein: A cord supply means for supplying the cord to a position facing the cord application portion;
A cord moving member having a groove portion into which the cord is fitted, and holding the cord in the groove portion to approach the cord attaching portion;
A cord crimping member for extruding and crimping a cord from the groove portion to the cord adherence portion;
A cord reinforcing body manufacturing apparatus comprising:   The cord crimping member pushes the cord from the groove portion to the cord attaching portion when the cord moving member moves to a position where the distance between the groove portion and the cord attaching portion is equal to or less than the diameter of the cord. The cord reinforcing body manufacturing apparatus according to claim 5.   The cord reinforcing body manufacturing apparatus according to claim 5 or 6, wherein a magnet for attracting the cord to the groove portion is provided on the cord moving member. A cord attaching portion rotating means for rotating the annular code attaching portion around the axis with a part thereof facing the peripheral portion of the rotating body;
The code supply means includes
A rotating body that rotates about an axis;
A cord supply mechanism for supplying a cord to the periphery of the rotating body;
Have
The cord moving member can be moved in and out of the periphery of the rotating body,
The cord reinforcing member manufacturing apparatus according to any one of claims 5 to 7, wherein the cord crimping member is provided on the cord holding member so as to be movable in a protruding and retracting direction.

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