JP2009006534A - Method and equipment for manufacturing tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain an improvement in rubber quality and efficient use of energy by reducing winding means in an un-operated state. <P>SOLUTION: In a winding stage CS in which a plurality of winding stations T1 to T4 are disposed, bodies to be wound 12 are successively transferred to the winding stations T1 to T4 with a constant tact time by a distribution transfer mechanism 62, and rubber strips are helically wound around the bodies to be wound 12 a large number of times simultaneously by winding means 59. On the other hand, every time the winding is completed, the bodies to be wound 12 are transferred to the next winding stage IS with the constant tact time by the distribution transfer mechanism 62 and, therefore, the winding means 59 in the winding stage CS are actuated simultaneously. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

    The present invention relates to a tire manufacturing method and apparatus for forming a rubber member constituting a part of a tire by winding a rubber strip many times around a wound body in a spiral manner.

As a conventional tire manufacturing method and apparatus, those described in, for example, Patent Document 1 below are known.
JP 2004-174765 A

  This is equipped with a rotating body that can rotate around its own axis, an endless track that sequentially moves the rotating body to a plurality of work stations with a fixed tact time, and only one unit is installed at each work station. Different types of rubber members that form part of the tire, such as a base tread member, a cap tread member, or a side, that form a part of a tire by supplying a rubber strip around the rotating body that has been moved and spirally wound many times. And winding means for forming each of the wall members and the like.

    However, in such a conventional tire manufacturing method and apparatus, since only one winding means is installed at each work station, the type of tire to be manufactured, specifically, the rubber type of the rubber member is used. When the change occurs, it is necessary to change the type (rubber type) of the rubber strip supplied from the winding means according to the type of the tire. In this case, the tire manufacturing including the winding means is performed. After the operation of the entire device is stopped, the remaining rubber is removed from the winding means and discarded, while it is necessary to supply unvulcanized rubber of the corresponding rubber type to the winding means, resulting in a reduction in work efficiency. In addition, there is a problem that unnecessary rubber is generated.

  In order to solve such problems, for example, a rubber strip of a rubber type that is scheduled to be wound (a rubber type different from each other) is supplied to a work station in which the rubber type of the rubber strip is changed in accordance with a change in the type of tire. It is also possible to install a plurality of possible winding means and supply the rubber strip to the wound body from one winding means corresponding to the tire currently being manufactured.

  However, if this is done, the remaining winding means will be deactivated, or if it continues to operate, the rubber strip that has nowhere to go is simply returned to the winding means (no winding state). Therefore, there is a problem that the rubber is temporarily retained and the rubber quality of the rubber member is lowered or the energy loss is increased.

  An object of the present invention is to provide a tire manufacturing method and apparatus that can improve rubber quality and use energy efficiently by reducing the non-operating state of the winding means.

    The purpose of this is to firstly move a wound body that can rotate around its own axis line to a plurality of winding stages by moving means at a constant tact time, while in any winding stage. The rubber strip is supplied from the winding means installed on the winding stage to the periphery of the wound body and wound many times in a spiral manner to form different types of rubber members constituting a part of the tire. In the tire manufacturing method, a plurality of winding stations each provided with the winding means are provided on at least one winding stage, and the winding station is provided by a distribution transfer mechanism constituting a part of the moving means. On the other hand, the wound body is sequentially transferred from the previous winding stage in a predetermined order, and the rubber strip is simultaneously wound around the wound body at two or more winding stations. By tire manufacturing method so as to transfer the time to said wound body in which winding of the rubber strip ends next winding stage can be achieved,

  Secondly, a wound body that can rotate around its own axis, a moving means that sequentially moves the wound body to a plurality of winding stages with a fixed tact time, and each winding stage are provided with the windings. And a winding means for supplying a rubber strip around the wound body that has been moved to the rotation stage and winding it in a spiral manner to form different types of rubber members that constitute part of the tire. In the tire manufacturing apparatus, a plurality of winding stations each provided with the winding means are provided on at least one winding stage, and a distribution transfer mechanism constituting a part of the moving means is provided in front of the winding station. The wound body is sequentially transferred from the winding stage in a predetermined order, and the rubber strip is simultaneously wound around the wound body at two or more winding stations. There the 該被 wound body whenever the terminated by tire manufacturing apparatus designed to transfer to the next winding stage can be achieved.

  In this invention, in the winding stage provided with a plurality of winding stations, the winding body is sequentially transferred from the previous winding stage to the winding station by a distribution transfer mechanism with a constant tact time, and At the two or more winding stations, the rubber strip is simultaneously supplied to the wound body by the winding means and wound many times in a spiral manner, while the wound body is distributed each time the winding of the rubber strip is completed. Since the transfer mechanism is configured to transfer to the next winding stage with a constant tact time, two or more of the plurality of winding means are operating simultaneously in the winding stage. The non-operating state of the winding means is reduced, so that the rubber quality can be improved and the energy can be used efficiently.

  Further, as described above, when winding is performed simultaneously on the wound body at two or more winding stations, the per unit time of the rubber strip supplied to the wound body from the winding means of each winding station. The supply amount will be less than the rubber strip supply amount when only one winding means is installed on the winding stage, thereby making the winding means at each winding station smaller and cheaper. Can do. In addition, when the rubber types of the rubber strips supplied from the winding means of the respective winding stations are different, a plurality of types of tires can be manufactured simultaneously in a mixed flow state, while the rubber strips described above are the same. It is also possible to use a rubber type, and in this case, one type of tire can be manufactured. Thus, it can be easily adapted to various types of manufacturing forms, and the degree of freedom in manufacturing tires is increased, which is suitable for various kinds of small-volume production.

  According to the third aspect of the present invention, only one winding means is installed on the winding stage so that the amount of rubber strip supplied from each winding means to the wound body per unit time is one. In this case, the amount of rubber strip supplied is uniformly reduced to a value divided by the number of winding means. As a result, any winding means can be made small and inexpensive. Furthermore, if constituted as described in claim 4, the distribution transfer mechanism can be made simple and small in size.

  According to the fifth aspect of the invention, the wound body is fixed to the drive unit, and the mass of the object to be moved is smaller than when the wound body and the entire drive unit are moved. Handling becomes easy, and the use of excess energy can be suppressed. Furthermore, if comprised as described in Claim 6, since the temperature immediately after extrusion and a rubber strip with high adhesive force can be supplied to a to-be-wound body, the shape stability of the shape | molded rubber member is improved. be able to.

  Further, since the rubber layer of the tread cap layer is changed relatively frequently when the type of tire is changed, such a situation can be easily coped with if configured as described in claim 7. be able to. Further, if configured as described in claim 8, no matter how the tire type is changed, winding means corresponding to the change is installed in advance, so that this can be easily dealt with. it can.

Embodiment 1 of the present invention will be described below with reference to the drawings.
In FIGS. 1 and 2, reference numeral 11 denotes a carry-in stock stand installed on the floor surface, and a plurality of wound bodies 12 are placed on the carry-in stock stand 11. In addition, a drive unit (not shown) is installed behind the carry-in stock stand 11, and a substantially donut whose outer surface is the same shape as the inner surface of the vulcanized tire (product tire) by the rotation shaft of the drive unit. A rigid core 13 is gripped from the inside. The rigid core 13 can rotate around a horizontal axis by receiving a rotational driving force from the drive unit.

  Here, the rigid core 13 is inserted into the core segments 16 in a plurality of arc segments arranged in close contact with each other in the circumferential direction, and the core segments 16 are screwed together. Is formed of substantially cylindrical fastening bodies 17 and 18 that sandwich the shaft from both sides. The core segment 16 is composed of two types of segments, a fan-shaped sector segment and a substantially trapezoidal chevron segment, and the sector and chevron segments are alternately arranged in the circumferential direction.

  When the rigid core 13 is rotated by receiving a driving force from the drive unit as described above, a rubberized cord, a rubber strip, a ply, etc. are knitted and wound around the rigid core 13, A tire intermediate body 20 made of a bead, a carcass, a belt, or the like is formed outside the rigid core 13. The composite body of the rigid core 13 and the tire intermediate body 20 formed outside the rigid core 13 constitutes the above-described wound body 12, and the wound body 12 is removed from the drive unit after molding. And transported to the carry-in stock table 11. The wound body may be composed of a rigid core 13 alone.

  In the present invention, the carcass is molded on a cylindrical molding drum capable of expanding and contracting, and after forming a green case by setting beads, the molding drum between the beads is expanded in diameter to make the carcass substantially circular. While bulging and deforming in an arc shape, a belt intermediate body may be attached to the outside of the carcass to constitute a tire intermediate body, and a wound body may be constituted by a composite of the tire intermediate body and the forming drum. In addition, you may comprise a to-be-wrapped body from the shaping | molding drum single-piece | unit mentioned above.

  1, 2, 3, and 4, a base winding stage BS is provided in front of the carry-in stock table 11, and a fixed frame (not shown) is installed on the floor surface of the base winding stage BS. Yes. Reference numeral 23 denotes a drive mechanism supported on a fixed frame. The drive mechanism 23 has a horizontal lower plate 24, and a pair of guide rails 25 extending in the left-right direction are laid on the upper surface of the lower plate 24. . A motor 26 is attached to the right end of the lower plate 24, and a screw shaft 28 extending in parallel to the guide rail 25 is connected to an output shaft 27 of the motor 26.

  The screw shaft 28 is rotatably supported by the lower plate 24 via a bearing 29, and the middle of the screw shaft 28 is screwed to an upper plate 31 that is slidably supported by the guide rail 25. As a result, when the motor 26 operates and the screw shaft 28 rotates, the upper plate 31 moves in the left-right direction while being guided by the guide rail 25. A pair of guide rails 32 extending in the front-rear direction is laid on the upper surface of the upper plate 31, and a motor 34 having an output shaft 33 is attached to the rear end of the upper plate 31.

  36 is a screw shaft extending in the front-rear direction, the rear end of which is connected to the output shaft 33 and the front end is rotatably supported by the upper plate 31 via a bearing (not shown). The drive unit 37 is slidably supported on the guide rail 32 and is screwed. As a result, when the motor 34 operates and the screw shaft 36 rotates, the drive unit 37 moves in the front-rear direction while being guided by the guide rail 32. The lower plate 24, the guide rail 25, the motor 26, the screw shaft 28, the upper plate 31, the guide rail 32, the motor 34, and the screw shaft 36 as a whole move the drive unit 37 two-dimensionally in a horizontal plane. The mechanism 23 is configured.

  The drive unit 37 has a rotary shaft 40 extending horizontally toward the front, and a gripping body 42 having a plurality of gripping segments 41 and arranged at a front end portion of the rotary shaft 40 and spaced apart in the circumferential direction. Is provided. When the wound body 12 is carried into the base winding stage BS and the fastening bodies 17 and 18 of the wound body 12 are fitted to the outside of the gripping body 42 in a reduced diameter state, The gripping body 42 expands in diameter and comes into contact with the inner periphery of the fastening body 17, firmly grips the wound body 12 from the inside and attaches it to the drive unit 37. At this time, the wound body 12 is It can rotate around its own axis. When the drive unit 37 is operated in this state, the wound body 12 is rotated around the axis together with the rotating shaft 40.

  44 is a base transfer mechanism installed in front of the carry-in stock table 11 and to the left of the base winding stage BS. This base transfer mechanism 44 is composed of one stationary industrial robot, and its manipulator 45 Can hold or release the wound body 12 from the holding. The base transfer mechanism 44 holds one wound body 12 mounted on the carry-in stock table 11, more specifically, the fastening body 17 or 18 by the manipulator 45, and then lifts it about 90 counterclockwise while lifting it. Then, the gripped wound body 12 is fitted to the outside of the gripping body 42 in the base winding stage BS. When the diameter of the gripping body 42 is increased in this state, the wound body 12 is transferred from the base transfer mechanism 44 to the drive unit 37 of the base winding stage BS. The base transfer mechanism 44 transfers the wound body 12 from the carry-in stock table 11 to the drive unit 37 with a constant tact time.

  47 is a support stand installed on the floor surface of the base winding stage BS, and this support stand 47 is arranged on the right side of the wound body 12 held by the holding body 42. A support post 48 extending in the vertical direction is installed on the support base 47, and the support post 48 can receive a driving force from a driving motor (not shown) and can rotate about a vertical axis. An extruder 49 that rotates around a horizontal axis by a drive motor (not shown) is provided on the upper portion of the support post 48. The extruder 49 includes, for example, a gear pump 50 and an unvulcanized product supplied from the gear pump 50. And an extrusion head 52 for continuously extruding rubber as a rubber strip 51.

  The support post 48 is rotatably supported by a pressure roller 54 and a guide roller 55 that are pressed against and pasted around the wound body 12 while guiding the rubber strip 51 immediately after being extruded from the extrusion head 52. Yes. Then, when the wound body 12 positioned on the base winding stage BS is rotating around the axis, the drive unit 37 is moved in the horizontal plane by the drive mechanism 23, thereby the outer surface of the wound body 12 and While maintaining the relative position to the extruder 49 constant, the support post 48 and the extruder 49 are rotated around the vertical axis, and the rubber strip 51 extruded from the extrusion head 52 of the extruder 49 is rotated. When the rubber strip 51 is supplied to the outer periphery of the body, here in the radial direction, the rubber strip 51 is spirally wound many times around the outer periphery of the wound body 12 to form a rubber member 56 constituting a part of the tire, here the top tread. The base layer 58 is formed.

  The fixed frame, the drive mechanism 23, the drive unit 37, the support base 47, the support post 48, the extruder 49, and the pressure roller 54 as a whole are installed on the base winding stage BS and moved to the base winding stage BS. The rubber strip 51 is supplied around the wound body 12 and wound many times in a spiral manner to constitute a base winding means 57 for molding a rubber member 56 (base layer 58) constituting a part of the tire. .

  Here, the rubber strip 51 wound around the wound body 12 may be one that has been extruded from an extruder, wound around a reel, and unwound from the reel as necessary. In this case, the winding means supplies the drive unit, the unwinding mechanism for unwinding the rubber strip from the reel, and the wound rubber strip around the wound body while shifting the unwound rubber strip in the width direction. What is necessary is just to comprise from the guide mechanism to press.

  Since the base winding means 57 has the extruder 49 for continuously extruding the rubber strip 51 as described above, the rubber strip 51 having a high temperature and adhesive force immediately after extrusion is applied to the wound body 12. As a result, the shape stability of the molded rubber member 56 (base layer 58) can be improved. Note that the cap layer and side winding means described later also have an extruder 49, and the same effect can be obtained.

  A cap winding stage CS is provided in front of the base winding stage BS. The cap winding stage CS has a plurality of equidistant distances on a straight line extending in the front-rear direction, in this case from the rear to the front. Are arranged in order, and the number of winding stations T (four in this case) equal to the number of types of tires to be manufactured, that is, the first, second, third and fourth winding stations T1, T2, T3, T4 is provided.

  Each of the winding stations T described above is provided with cap winding means 59 having the same configuration as the base winding means 57 described above. On the other hand, a laying table 60 extending forward from the first winding station T1 to the fourth winding station T4 is installed in front of the base transfer mechanism 44 and to the left of the four winding stations T. A pair of guide rails 61 extending in the front-rear direction are laid on the upper surface of the table 60.

  A distribution transfer mechanism 62 is slidably supported on the guide rail 61 and is movable in the front-rear direction. The distribution transfer mechanism 62 includes one industrial robot having the same structure as the base transfer mechanism 44. The manipulator 63 can grip or release the wound body 12 from the grip, similarly to the manipulator 45 described above. The distribution transfer mechanism 62 receives, for example, a screw mechanism (not shown) after receiving the wound body 12 around which the rubber member 56 (base layer 58) is wound from the base transfer mechanism 44 at the predetermined tact time. Receiving a driving force from a moving force applying mechanism such as the like, and moving forward to determine a predetermined order, here, first, second, third, and fourth winding stations T1, T2, T3, and T4 In this order, the wound body 12 is sequentially transferred to all (four) winding stations T and transferred to the cap winding means 59 of the cap winding stage CS.

  When the wound body 12 moves to the cap winding means 59 of each winding station T in this way, the rubber strip 51 is rotated from the extruder 49 of the cap winding means 59. It is supplied around the body 12 at the same time (supplied to the three wound bodies 12 for most of the time and simultaneously supplied to the four wound bodies 12 for a short time), and is wound many times in a spiral manner. A rubber member 56 of a different type from the above-described base layer 58, in this case, a cap layer 64 of a top tread is formed. At this time, from the cap winding means 59 in the first, second, third, and fourth winding stations T1, T2, T3, and T4 described above, more specifically, from the extruder 49, the type corresponds to the type of tire to be manufactured. Since the rubber strips 51 of different rubber types are extruded, the rubber member 56 formed at each winding station T has a different rubber type.

  Here, when the number of tires to be manufactured simultaneously is smaller than the number of winding stations T, only two or three winding stations T (cap winding means 59 (cap winding means 59) are provided in the same number of winding stations T as the tire types. ) And the rubber strip 51 may be wound by transferring the wound body 12 and may be transferred to two or more winding stations T and wound. At this time, the operation of the cap winding means 59 is stopped at the winding station T where the wound body 12 is not transferred, or the rubber strip 51 extruded from the extruder 49 is returned to the extruder 49 again.

  In this embodiment, the number of winding stations T provided in the cap winding stage CS is the number of types of rubber (number of tire types) scheduled to be wound in the cap winding stage CS. However, the number may be larger than the number of types of rubber types scheduled to be wound in the cap winding stage CS. In short, the number may be equal to or greater than the number of types of rubber types scheduled to be wound. In this way, no matter how the tire type is changed, the cap winding means 59 corresponding to this change is installed in advance, so that this can be easily dealt with, and either It is also possible to mold the rubber member 56 (cap layer 64) composed of a plurality of rubber types at the winding station T.

  When the winding of the rubber strip 51 around the wound body 12 is completed at the winding station T, the distribution transfer mechanism 62 removes the wound wound body 12 from the cap winding means every time the winding is completed. It is received from 59 and transferred forward, and this transfer interval is the same as the tact time. Here, in the cap winding stage CS in which a plurality of cap winding means 59 are installed, in order to receive and send the wound body 12 at a constant tact time as described above, each cap winding means The winding time from the start of winding to the end of winding in 59 is the same as the winding time when one cap winding means 59 is installed on the cap winding stage CS. It is necessary to lengthen to the extent of multiplying the number of units.

  For this purpose, the supply amount per unit time of the rubber strip 51 supplied to the wound body 12 from the plurality of cap winding means 59 installed in the cap winding stage CS is set to one cap winding stage. What is necessary is just to reduce from the supply amount per unit time when the means 59 is installed in the cap winding stage CS. Here, in order to reduce the supply amount per unit time as described above, the discharge speed of the rubber strip 51 from the cap winding means 59 (extruder 49) is reduced, or the cap winding means It is conceivable to reduce the cross-sectional area of the rubber strip 51 discharged from 59 (extruder 49), and to reduce both the discharge speed and the cross-sectional area. For example, four cap windings in the cap winding stage CS are possible. When the turning means 59 are operating simultaneously, the supply amount per unit time may be reduced to approximately 1/4.

  As a result, in the cap winding stage CS as described above, the rubber strip 51 is simultaneously supplied from the extruder 49 of the cap winding means 59 to the periphery of the wound body 12 (three windings in most time). The body 12 is simultaneously supplied to the four wound bodies 12 in a short time). The supply amount per unit time of the rubber strip 51 supplied from the cap winding means 59 of each winding station T as described above is used when only one winding means is installed on the cap winding stage CS. If the supply amount per unit time of the rubber strip is reduced, the cap winding means 59 in each winding station T can be made small and inexpensive.

  Here, the supply amount per unit time of the rubber strip 51 supplied to the wound body 12 from the plurality of cap winding means 59 installed on the cap winding stage CS provided with the plurality of winding stations T. Is equal in any cap winding means 59, the supply amount per unit time of the rubber strip 51 supplied from each cap winding means 59 to the wound body 12 is the cap winding stage CS. When only one winding means is installed, the amount of rubber strip supplied per unit time is uniformly reduced to the value divided by the number of cap winding means 59. As a result, any cap winding means 59 can also be smaller and cheaper.

  Further, if configured as described above, two or more of the plurality of cap winding means 59 in the cap winding stage CS are operating simultaneously (the rubber strip 51 is being pushed out), The non-operating state of the wound body 12 is reduced. As a result, the situation in which the operation of the extruder 49 stops and the unvulcanized rubber stays is reduced, the rubber quality of the rubber member 56 is improved, and when the extruder 49 is operating, the extruded rubber strip The situation where the 51 is simply returned to the extruder 49 is reduced, and the energy can be used efficiently. Moreover, when the rubber type of the rubber strip 51 supplied from the cap winding means 59 of each winding station T is different as described above, a plurality of types of tires can be manufactured simultaneously in a mixed flow state.

  Here, the four cap winding means 59 are divided into two, and the rubber strips 51 of different rubber types are extruded from the two and the remaining two to simultaneously mix two types of tires. Alternatively, it is possible to produce one type of tire by extruding the rubber strip 51 of the same rubber type from all four cap winding means 59, thereby producing various types of tires. It can be easily adapted to the form and has a high degree of freedom in manufacturing tires, which is suitable for various small-scale production. In addition, the top tread cap layer 64 changes the rubber type relatively frequently when the tire type is changed, so that the cap winding with the plurality of cap winding means 59 installed as described above. If the rubber member 56 molded in the stage CS is the top tread cap layer 64, such a situation can be easily dealt with.

  One side side winding stage IS is provided in front of the cap winding stage CS, specifically, the fourth winding station T4 located in the foremost row, and the one side winding stage IS is provided with one side winding. Means 66 are installed. Here, the one-side side winding means 66 has substantially the same structure as the base winding means 57, but in this one-side side winding means 66, the drive unit 37 has a vertical axis with respect to the fixed frame. A difference is that a motor (not shown) that can rotate around the vertical axis is installed.

  A one-side side transfer mechanism 67 is installed in front of the laying table 60 and to the left of the one-side side winding stage IS. The one-side side transfer mechanism 67 has the same structure as the base transfer mechanism 44. And a manipulator 68 that can hold or release the wound body 12 from the holding industrial robot. The one side transfer mechanism 67 receives the wound body 12 around which the rubber member 56 (cap layer 64) is wound from the distribution transfer mechanism 62 at the predetermined tact time, and then receives the one side winding. Delivered to one side winding means 66 of the turning stage IS.

  When the wound body 12 is mounted up to the one side winding means 66 in this way, the drive part 37 of the one side winding means 66 is rotated 90 degrees counterclockwise by the operation of the motor. Thereafter, the wound body 12 is driven by the drive unit 37 and rotates around the axis. At this time, the rubber strip 51 is supplied from the extruder 49 of the one-side side winding means 66 to the periphery of the rotating wound body 12 and is wound many times in a spiral manner to constitute a part of the tire. Then, a different type of rubber member 56 (one side tread 69 wound around one side in the axial direction of the wound body 12) is formed from the base layer 58 and the cap layer 64 described above. Next, the drive unit 37 is rotated 90 degrees clockwise to return to the initial position, and the one-side side transfer mechanism 67 removes the wound body 12 from which the winding has been completed from the one-side side winding means 66. Take out.

  The other side winding stage TS is provided in front of the one side winding stage IS, and the other side winding stage TS has the same structure as the one side side winding means 66. Means 70 are installed. Further, an other side transfer mechanism 71 is installed in front of the one side transfer mechanism 67 and to the left of the other side winding stage TS. The other side transfer mechanism 71 is the same as the base transfer mechanism 44. It has a manipulator 72 that is configured by a single industrial robot having a structure and can grip or release the wound body 12 from the grip.

  Then, after the other side transfer mechanism 71 receives the wound body 12 around which the rubber member 56 (one side tread 69) is wound from the one side transfer mechanism 67 with the above-described fixed tact time, Transfer to the other side winding means 70 on the other side winding stage TS. When the wound body 12 is mounted on the other side winding means 70 in this way, the drive unit 37 of the other side winding means 70 rotates 90 degrees counterclockwise by the operation of the motor. Thereafter, the wound body 12 is driven by the drive unit 37 and rotates around the axis.

  At this time, the rubber strip 51 having the same rubber type as the rubber strip 51 extruded from the extruder 49 of the other side winding means 70 and extruded from the one side winding means 66 is rotating. A rubber member 56 of a type different from the base layer 58, the cap layer 64, and the one-side side tread 69 described above, which is supplied around the rotating body 12 and wound in a spiral manner to form a part of the tire. The other side tread 73) wound around the other side in the axial direction of the wound body 12 is formed into a green tire 74. Next, the drive unit 37 is rotated 90 degrees clockwise to return to the initial position, and the other side transfer mechanism 71 moves the wound body 12 (green tire 74) from the other side winding means 70. The sheet is taken out and transferred onto the carry-out stock stand 75 installed in front of the other side transfer mechanism 71. Note that the rubber type of the rubber strip 51 pushed out from the one-side and other-side side winding means 66, 70 may be different.

  The above-described base, distribution, one side, and other side transfer mechanisms 44, 62, 67, 71 as a whole have a plurality of wound bodies 12 with a fixed tact time, here four winding stages S, that is, bases. , A moving means 78 for sequentially moving to the cap, the one side, and the other side winding stages BS, CS, IS, TS. As a result, the distribution transfer mechanism 62 constitutes a part of the moving means 78. The distribution transfer mechanism 62 sequentially transfers the wound body 12 from the previous base winding stage BS to the winding station T in a predetermined order, so that the winding is performed at two or more winding stations T. While the rubber strip 51 is wound around the body 12 at the same time, the wound body 12 can be transferred to the next one-side side winding stage IS each time the rubber strip 51 is wound.

  In the present invention, the moving means includes a laying base extending from the side of the base winding stage BS to the side of the other side winding stage TS, and a bottom supported by the laying base so as to be movable in the front-rear direction. A moving plate, an upper moving plate supported by the lower moving plate so as to be movable in the left-right direction, and a gripping claw supported by the upper moving plate and capable of gripping and releasing the wound body. Also good.

  In this embodiment, the distribution transfer mechanism 62 can be held and released from the gripping body 12 as described above, and includes a plurality of winding stations T, the previous base winding stage BS, and the next one side. Since it is composed of one industrial robot capable of transferring the wound body 12 to and from the winding stage IS, the distribution transfer mechanism 62 can be simplified in structure and reduced in size.

  Further, in this embodiment, as described above, a plurality of winding stations T and a winding stage other than the cap winding stage CS provided with the winding station T, that is, a base, one side, and the other side The drive unit 37 is installed on each of the side winding stages BS, IS, TS, and the wound body 12 transferred from the moving means 78 to the drive unit 37 is rotated around the axis by the drive unit 37. Therefore, the fixed body is fixed to the drive unit, and compared to the case where the entire wound body and the drive unit are moved, the mass of the moving object is reduced and the handling becomes easy and the excess energy is reduced. Use can be suppressed.

  In the above-described embodiment, only four winding stages S, that is, the base, the cap, the one side, and the other side winding stages BS, CS, IS, and TS are installed. Two, three or five or more winding stages may be installed. Furthermore, in the above-described embodiment, a plurality of (four) winding stations T each provided with the cap winding means 59 are provided only on the cap winding stage CS. However, in the present invention, The winding stage S, for example, the base winding stage BS, the one side winding stage IS or the other side winding stage TS, may be provided with a plurality of winding stations each provided with winding means, In short, it is only necessary to provide a plurality of winding stations each provided with winding means on at least one winding stage.

  In the above-described embodiment, the drive unit 37 is moved two-dimensionally (front and rear, left and right) together with the wound body 12 by the drive mechanism 23, and the support post 48 having the extruder 49 is moved around the vertical axis. The rubber strip 51 is wound around the wound body 12 while being rotated at the same time. However, in the present invention, the drive unit 37 and the wound body 12 are left stationary, while the support base 47 is supported. The rubber strip 51 may be wound around the wound body 12 while the post 48 is moved two-dimensionally and the support post 48 is rotated about the vertical axis.

Next, the operation of the first embodiment will be described with reference to FIG.
Now, at time t0, the wound body 12 mounted on the drive unit 37 of the base winding means 57 in the base winding stage BS is driven by the drive unit 37 to start rotating, and the base winding means 57 It is assumed that the rubber strip 51 is supplied from the extruder 49 to the periphery of the wound body 12, and the rubber strip 51 forming the base layer 58 starts to be wound radially outward of the wound body 12. .

  At this time, the wound body 12 is not attached to the cap winding means 59 in the first winding station T1 of the cap winding stage CS, and is empty, but the cap of the first winding station T1 is empty. The wound body 12 to be mounted on the winding means 59 is transferred toward the cap winding means 59 of the first winding station T1 while being gripped by the distribution transfer mechanism 62.

  At this time, in the second, third, and fourth winding stations T2, T3, and T4 of the cap winding stage CS, rubber strips 51 of different rubber types from the extruder 49 of the cap winding means 59 are connected to the axis line. Although the drive unit 37 of the cap winding means 59 moves in a horizontal plane, the support post 48 and the extruder 49 are moved around the vertical axis. Since the rubber strip 51 rotates, the rubber strips 51 are wound one after another in a spiral manner on the outer side in the radial direction of the wound body 12 to form a cap layer 64.

  On the other hand, in the one side and other side winding stages IS and TS, the wound body in which the rubber strip 51 is rotated around the axis from the extruder 49 of the one side and other side winding means 66 and 70. Although the one side, the other side winding stage IS, TS also on the one side, the drive unit 37 of the other side winding means 66, 70 moves in the horizontal plane, Since the support post 48 and the extruder 49 are rotated around the vertical axis, the rubber strip 51 is spirally wound around the axially outer sides of the wound body 12 one after another, and the one side, the other side tread 69 and 73 are molded. Thereafter, the distribution transfer mechanism 62 transfers the gripped wound body 12 to the cap winding means 59 of the first winding station T1, and then returns to the standby state.

  Next, at time t1, at the first winding station T1, rotation is started by the driven body 12 being driven by the drive unit 37, and the winding from the extruder 49 of the cap winding means 59 is started. The supply of the rubber strip 51 is started around the rotating body 12, and the rubber strip 51 forming the cap layer 64 starts to be wound radially outward of the wound body 12. As a result, the rubber strips 51 of different rubber types are respectively supplied to the wound body 12 at all (four) winding stations T and are simultaneously wound.

  Next, at time t2, the winding of the rubber strip 51 around the wound body 12 of the other side winding stage TS (molding of the other side tread 73) is completed, and the green tire 74 is molded. The rotation of the rotating body 12 stops. Thereafter, the other side transfer mechanism 71 takes out the wound body 12 (green tire 74) from the other side winding means 70 and transfers it onto the carry-out stock table 75.

  Next, at time t3, the winding of the rubber strip 51 around the wound body 12 at the second winding station T2 (formation of the cap layer 64) ends, and the rotation of the wound body 12 stops. Thereafter, the distribution transfer mechanism 62 is moved to the vicinity of the second winding station T2 while being guided by the guide rail 61, and after the wound body 12 is taken out from the cap winding means 59 of the second winding station T2, It moves forward while grasping the rotating body 12.

  Next, at time t4, the winding of the rubber strip 51 around the wound body 12 of the one-side side winding stage IS (molding of the one-side side tread 69) is completed, and the rotation of the wound body 12 is stopped. To do. Thereafter, the one-side side transfer mechanism 67 takes out the wound body 12 from the one-side side winding means 66. Here, during the period from time t2 to time t5, the other side transfer mechanism 71 transfers the wound body 12 (green tire 74) onto the carry-out stock table 75 as described above, and then The wound body 12 taken out from the side side winding means 66 is received from the one side transfer mechanism 67, and the wound body 12 is mounted on the other side winding means 70 on the other side winding stage TS. To do.

  At time t5, the rotation of the wound body 12 is started by the other side winding means 70 of the other side winding stage TS, and the winding is performed from the extruder 49 of the other side winding means 70. The supply of the rubber strip 51 is started around the body 12, and the rubber strip 51 forming the other side tread 73 starts to be wound around the wound body 12. At this time t5, the winding of the rubber strip 51 around the wound body 12 attached to the base winding means 57 of the base winding stage BS (molding of the base layer 58) is completed, and the wound The rotation of the rotating body 12 stops. Thereafter, the base transfer mechanism 44 takes out the wound body 12 from the base winding means 57.

  Here, during the period from time t4 to time t6, the one-side side transfer mechanism 67 takes out the wound body 12 from the one-side side winding means 66 and transfers it to the other-side side transfer mechanism 71 as described above. After that, the wound body 12 is received from the distribution transfer mechanism 62 that has moved to the front limit, and is mounted on the one side winding means 66 of the one side winding stage IS. Thereafter, the distribution transfer mechanism 62 moves rearward. At time t6, the one-side side winding means 66 starts the rotation of the wound body 12 by the one-side side winding stage IS, and the one-side side winding means 66 starts the rotation from the extruder 49. The supply of the rubber strip 51 is started around the body 12, and the rubber strip 51 forming the one side tread 69 starts to be wound around the wound body 12.

  Here, during the period from time t5 to time t7, the base transfer mechanism 44 delivers the wound body 12 taken out from the base winding means 57 as described above to the distribution transfer mechanism 62, and then the carry-in stock table The wound body 12 is taken out from 11 and mounted on the base winding means 57 of the base winding stage BS, while the distribution transfer mechanism 62 moves forward while gripping the received wound body 12. Then, at time t7, the first turn ends and returns to time t0. Here, the time between the above-described time t0 and time t7 is the tact time.

  Next, the second turn starts. In this second turn, the rubber strip for forming the cap layer 64 on the wound body 12 attached to the cap winding means 59 of the second winding station T2 at time t1. At the time t3, winding of the rubber strip 51 around the wound body 12 attached to the cap winding means 59 of the third winding station T3 (molding of the cap layer 64) is completed at the time t3. . Other operations are the same as those in the first turn.

  Next, in the third turn, winding of the rubber strip 51 around the wound body 12 of the third winding station T3 at time t1 (molding of the cap layer 64) starts, and the fourth winding at time t3. The winding of the rubber strip 51 around the wound body 12 at the station T4 (formation of the cap layer 64) is completed, and in the fourth turn, the rubber strip around the wound body 12 at the fourth winding station T4 at time t1. The winding of 51 (molding of the cap layer 64) starts, and the winding of the rubber strip 51 (molding of the cap layer 64) around the wound body 12 of the first winding station T1 ends at time t3. Other operations at this time are the same as those in the first turn.

  Such first to fourth turns constitute one cycle, and thereafter this cycle is repeated. At this time, the wound body 12 is sequentially moved to a plurality of winding stages S by a moving means 78 with a fixed tact time, here, base, cap, one side, other side winding stages BS, CS, IS, TS. On the other hand, in any winding stage S, the rubber strip 51 is supplied around the wound body 12 from the base, the cap, the one side, and the other side winding means 57, 59, 66, 70. It is wound many times in a spiral to form different types of rubber members 56, here, a base layer 58, a cap layer 64 and one side, other side treads 69, 73.

  In the cap winding stage CS, the distribution transfer mechanism 62 applies a plurality of winding stations T, here four first, second, third and fourth winding stations T1, T2, T3, T4. The wound body 12 is sequentially transferred from the previous base winding stage BS in the above-described order, and the rubber strip 51 is simultaneously wound around the wound body 12 at two or more winding stations T in this case. On the other hand, every time winding of the rubber strip 51 is completed, the wound body 12 is taken out from the winding station T and transferred to the next one-side side winding stage IS. Thereafter, the green tire 74 is conveyed to a vulcanizing device and then vulcanized in the vulcanizing device to become a vulcanized tire (product tire).

    FIG. 6 is a diagram showing Embodiment 2 of the present invention. In this embodiment, the cap winding stage CS has a plurality of, in this case, two winding stations T on two straight lines extending in the front-rear direction, for example, first and second windings on one straight line. Stations T1 and T2 are installed on the other straight line with the third and fourth winding stations T3 and T4 spaced apart from each other in order from the rear to the front, and the first and second winding stations T1, Between the T2 and the third and fourth winding stations T3 and T4, a laying table 60 and a guide rail 61 extending in the front-rear direction, in which the distribution transfer mechanism 62 is slidably supported, are installed. The wound body 12 is transferred while being distributed to both sides. In this way, the length of the cap winding stage CS can be shortened, the work efficiency can be improved, and the size of the entire manufacturing apparatus can be reduced.

  The present invention can be applied to the industrial field of manufacturing tires.

It is a schematic plan view which shows Embodiment 1 of this invention. It is meridian sectional drawing of the to-be-wrapped body vicinity. It is a top view of the winding means vicinity. FIG. 4 is a cross-sectional view taken along the line II in FIG. 3. It is a time chart figure of rubber strip winding to a wound body. It is a schematic plan view of the cap winding stage vicinity which shows Embodiment 2 of this invention.

Explanation of symbols

12… Wound body 37… Drive unit
49 ... Extruder 51 ... Rubber strip
56 ... Rubber member 57, 59, 66, 70 ... Winding means
62… Distribution transfer mechanism 64… Cap layer
78 ... Moving means S ... Winding stage T ... Winding station

Claims (8)

    While the wound body that can rotate around its own axis is sequentially moved to a plurality of winding stages by moving means at a fixed tact time, the windings installed on the winding stage in any winding stage. In a tire manufacturing method in which a rubber strip is supplied around a wound body from a winding means and wound many times in a spiral manner to form different types of rubber members constituting a part of the tire, respectively. A plurality of winding stations each provided with the winding means are provided on one winding stage, and the winding station is wound from the previous winding stage by a distribution transfer mechanism constituting a part of the moving means. The rolls are sequentially transferred in a predetermined order, and the rubber strip is wound around the wound body at two or more winding stations at the same time. Tire manufacturing method is characterized in that so as to transfer the 該被 wound body to the next winding stage Ryosuru time.     A wound body that can rotate around its own axis, a moving means that sequentially moves the wound body to a plurality of winding stages with a fixed tact time, and installed on each winding stage, and moves to the winding stage In a tire manufacturing apparatus comprising a winding means for supplying a rubber strip around a wound body to be wound and spirally winding a number of times to form different types of rubber members constituting a part of the tire, respectively A plurality of winding stations each provided with the winding means on at least one winding stage, and a previous winding stage with respect to the winding station by a distribution transfer mechanism constituting a part of the moving means The wound body is sequentially transferred in a predetermined order, and the rubber strip is simultaneously wound around the wound body at two or more winding stations, while the winding of the rubber strip is completed. Tire production apparatus characterized by that time in the 該被 wound body was to transfer to the next winding stage.     The supply amount per unit time of the rubber strip supplied to the wound body from a plurality of winding means installed on a winding stage provided with the plurality of winding stations is the same in any winding means. The tire manufacturing apparatus according to claim 2, which is an amount.     The distribution transfer mechanism is a single robot capable of gripping and releasing the wound body from a plurality of winding stations and the previous and next winding stages and transporting the wound body. The tire manufacturing apparatus according to claim 2 or 3.     A driving unit is installed in each of the winding stages other than the plurality of winding stations and the winding stage provided with the winding station, and the wound body passed from the moving means to the driving unit is moved by the driving unit. The tire manufacturing apparatus according to any one of claims 2 to 4, wherein the tire manufacturing apparatus is rotated about an axis.     The tire manufacturing apparatus according to any one of claims 2 to 5, wherein the winding means includes an extruder for continuously extruding a rubber strip.     The tire manufacturing apparatus according to any one of claims 2 to 6, wherein the rubber member molded in the winding stage provided with the plurality of winding stations is a cap layer of a top tread.     The tire manufacturing apparatus according to any one of claims 2 to 7, wherein the number of winding stations provided on the winding stage is equal to or greater than the number of types of rubbers scheduled to be wound on the winding stage.

Images