JP2009000848A - Method and apparatus for producing tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of useless rubber while improving working efficiency. <P>SOLUTION: Since, on the side of a cap winding stage CS, a plurality of (four) cap winding means 50 supplying rubber strips of different rubber kinds to a wound body 17 are installed, and the rubber strip from one cap winding means 50 is supplied to the wound body 17, the kind of a tire to be produced, in detail, when the rubber kind of a rubber member 45 is changed, operation is changed over to the winding means 50 which supplies the rubber strip of a rubber kind corresponding to the change. <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, and a single unit installed on the side of each work station. Around the rotating body, a rubber strip is supplied and spirally wound many times to form different types of rubber members constituting part of the tire, for example, a base tread member of a top tread, a cap tread member or a sidewall And winding means for forming each member or the like.

    However, in such a conventional tire manufacturing method and apparatus, since only one winding means is installed on the side of each work station, the type of tire to be manufactured, specifically, the rubber member When the rubber type changes, it is necessary to change the type of rubber strip (rubber type) supplied from the winding means according to the type of tire. In this case, the winding means After the operation of the entire tire manufacturing apparatus is stopped, it is necessary to remove the remaining rubber from the winding means and dispose of it. On the other hand, it is necessary to supply raw 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.

  An object of the present invention is to provide a tire manufacturing method and apparatus capable of preventing generation of useless rubber while improving work efficiency.

    The purpose of this is to firstly move the wound body that can rotate about its own axis to a plurality of winding stages by means of moving means, while in any winding stage, the winding stage A rubber strip is supplied to the periphery of the wound body from the winding means installed on the side of the belt and wound many times in a spiral manner so that different types of rubber members constituting a part of the tire are respectively molded In the tire manufacturing method, a plurality of winding means for supplying rubber strips of different rubber types to the wound body are installed on the side of at least one winding stage, so that the winding stage is wound around the winding stage. This can be achieved by the tire manufacturing method in which the rubber strip is supplied to the wound body from at least one of the plurality of winding means when the rolling body has moved. ,

  Second, 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, and a winding unit that is installed on the side of each winding stage. A tire provided with a winding means for supplying a rubber strip around a wound body that has moved to the stage and winding it in a spiral manner to form different types of rubber members constituting part of the tire. In the manufacturing apparatus, a plurality of winding means for supplying rubber strips of different rubber types to the wound body are installed on the sides of at least one winding stage, and the wound body moves to the winding stage. Then, it can be achieved by a tire manufacturing apparatus in which a rubber strip is supplied to the wound body from at least one of the plurality of winding means.

  In the present invention, a plurality of winding means for supplying rubber strips of different rubber types to the wound body are installed on the sides of at least one winding stage, and the wound body is mounted on the winding stage. Since the rubber strip is supplied to the wound body from at least one of the plurality of winding means when moving, the type of tire to be manufactured, specifically the rubber member When the rubber type changes, the operation of the winding means for supplying the rubber strip is stopped and the operation is switched to the winding means for supplying the rubber type rubber strip corresponding to the change. In this way, continuous production is possible while improving work efficiency, and generation of useless rubber can be easily suppressed.

  According to the third aspect of the present invention, since a rubber strip having a high temperature and high adhesive force immediately after extrusion can be supplied to the wound body, the shape stability of the 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 4. be able to. According to the fifth aspect of the present invention, no matter how the tire type is changed, the 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.
1, 2, and 3, reference numeral 11 denotes a pair of guide rails extending in the front-rear direction, and the guide rails 11 are laid on the floor surface. Reference numeral 12 denotes a plurality of moving bases installed at a predetermined distance in the front-rear direction. These moving bases 12 are slidably supported by the guide rails 11 and are movable along the guide rails 11. Each moving table 12 supports a horizontal forming drum 13 extending forward, and the forming drum 13 can receive a driving force from a driving motor built in the moving table 12 and can rotate around an axis. At the same time, it can be scaled.

  Then, when a tire intermediate body 16 such as a carcass band is carried and supplied to the outside of these molding drums 13 at a carry-in stage described later, the tire intermediate body 16 is gripped by the molding drum 13 at both ends in the axial direction from the inside. After that, since the diameter of the forming drum 13 expands while these two axial ends are approaching each other, it is bulged and deformed in a substantially toroidal shape. In addition, the above-described molding drum 13 alone or a composite body such as the molding drum 13, the tire intermediate body 16, an inclined belt ply and a rubber member, which will be described later, corresponds to the wound body 17 in this embodiment. The wound body 17 can rotate around its own axis. The aforementioned wound body may be a single rigid core having an outer surface that has the same shape as the inner surface of a vulcanized tire (product tire), or a complex of a rigid core and a tire intermediate body. Good.

  Reference numeral 21 denotes an endless chain extending along the guide rail 11. The front and rear ends of the chain 21 are hung around sprockets (not shown), and for example, the front end sprocket is fixed to the output shaft of the motor. Yes. Locking pieces 20 that are separated from each other by a fixed distance are fixed to the chain 21, and these locking pieces 20 can be engaged with and disengaged from the movable table 12. When the locking piece 20 is engaged with the moving table 12, when the motor is operated and the chain 21 travels forward, the plurality of moving tables 12 on the guide rail 11 are synchronously moved forward. Moving.

  Here, since the operation of the motor is stopped every time the movable table 12 moves forward by a certain distance, each wound body 17 is temporarily stopped at each winding stage S separated by a certain distance in the front-rear direction, Move repeatedly toward the front. The chain 21, the motor, the sprocket, and the locking piece 20 described above are arranged such that the wound body 17 supported by the movable table 12 is sequentially arranged from a plurality of winding stages S, here from the rear to the front. A moving means 22 for sequentially moving to a carry-in stage, a base winding stage BS, a cap winding stage CS, a side winding stage SS, and a carry-out stage (not shown) is formed. In addition, as the moving means described above, a self-propelled mechanism loaded on a movable carriage, or a plurality of cylinders that move the movable carriage from one winding stage S to the next winding stage S may be used.

  25 is a conveyor installed on the left side of the base winding stage BS and extending perpendicular to the guide rail 11, and this conveyor 25 is constructed by rubber covering a number of reinforcing cords inclined with respect to the longitudinal direction. The finished sheet body can be supplied to the wound body 17 located on the base winding stage BS. When the wound body 17 located on the base winding stage BS rotates around its own axis, the sheet body is supplied from the conveyor 25 to the outside of the wound body 17 and wound. Then, a plurality of cylindrical inclined belt plies having reinforcing cords inclined with respect to the circumferential direction are formed outside the wound body 17.

  A fixed frame (not shown) is fixed on the floor on the right side of the base winding stage BS, and a horizontal lower plate 28 extending in parallel with the guide rail 11 is attached to the upper end of the fixed frame. Yes. A pair of guide rails 29 extending in parallel with the guide rails 11 are laid on the upper surface of the lower plate 28. The guide rails 29 are guided by the guide rails 29 while receiving a driving force from a moving mechanism (not shown). An upper plate 30 that can move in the direction is supported so as to be slidable.

  A pair of guide rails 32 extending in a direction orthogonal to the guide rails 29 are laid on the upper surface of the upper plate 30, and the guide rails 32 are guided by the guide rails 32 by receiving a driving force from a moving mechanism (not shown). However, a movable plate 33 that can move in the left-right direction is slidably supported. For this reason, the moving plate 33 can freely move in the horizontal plane by the operation of the moving mechanism.

  A support post 36 extending in the vertical direction is installed on the upper surface of the moving plate 33. The support post 36 can be rotated about a vertical axis by receiving a driving force from a driving motor (not shown). An extruder 37 that rotates around a horizontal axis by a drive motor (not shown) is provided on the upper portion of the support post 36, and the extruder 37 continuously includes, for example, a gear pump 38 and raw rubber supplied from the gear pump 38. And an extrusion head 40 for extruding the rubber strip 39. Also, a pair of guide rollers 41 and 42 are rotatably supported on the support post 36 while being pressed and pasted around the wound body 17 while guiding the rubber strip 39 immediately after being extruded from the extrusion head 40. Yes.

  When the wound body 17 positioned on the base winding stage BS is rotating around the axis, the upper plate 30 and the moving plate 33 are moved in a horizontal plane so that the support post 36 is attached to the wound body 17. While moving along the outer surface, the support post 36 and the extruder 37 are rotated around the vertical axis, and the rubber strip 39 extruded from the extrusion head 40 of the extruder 37 is rotated around the wound body 17, here. When supplied radially outward, the rubber strip 39 is wound many times spirally around the wound body 17 to form a rubber member 45 constituting a part of the tire, here a base layer of a top tread. .

  The moving plate 33, the support post 36, the extruder 37, and the guide rollers 41 and 42 described above are installed on the side of the base winding stage BS as a whole, and the wound body 17 has moved to the base winding stage BS. A rubber strip 39 is supplied to the periphery of the rubber strip 39 and wound in a spiral manner to form a base winding means 46 for forming a rubber member 45 (base layer) constituting a part of the tire. Thus, the base winding means 46 has the extruder 37 for continuously extruding the rubber strip 39, so that the rubber strip 39 having high temperature and high adhesive force immediately after extrusion is supplied to the wound body 17. As a result, the shape stability of the molded rubber member 45 (base layer) can be improved. The winding means 50 and 52 described later also have an extruder 37, and the same effect can be obtained.

  In this embodiment, even if there is a change in the type of tire to be manufactured, the rubber type of the rubber member 45 (base layer) is not changed, so the base winding means 46 is provided on the side of the base winding stage BS. Only one rubber strip 39 of the same rubber type is always extruded. Further, the fixed frame, the lower plate 28, the guide rail 29, the upper plate 30, the guide rail 32, and the moving mechanism, which are described above, move the base winding means 46 horizontally along the outer surface of the wound body 17 as a whole. Means 47 is configured.

  On the other hand, on the left side of the cap winding stage CS, two first and second cap winding means 50a and 50b supported by a driving means (not shown) similar to the driving means 47 described above are installed. The first and second cap winding means 50a and 50b have the same structure as the base winding means 46. On the other hand, on the right side of the cap winding stage CS, two third and fourth cap winding means 50c and 50d supported by driving means (not shown) similar to the driving means 47 described above are installed. These third and fourth cap winding means 50c and 50d have the same structure as the base winding means 46.

  Here, a plurality of (four) cap winding means 50 are installed on the side of the cap winding stage CS in this manner when the type of tire to be manufactured is changed, the rubber member 45, Here, the rubber type constituting the cap layer of the top tread is changed to the same type (four types) as the tire type. As a result, the first, second, third, and fourth cap windings described above are performed. The means 50a, 50b, 50c, 50d will extrude rubber strips 39 of different rubber types.

  If a certain type of tire is currently manufactured, a cap winding means 50 corresponding to the manufactured tire, for example, a fourth cap winding means 50d, is provided around the axis in the cap winding stage CS. The rubber strip 39 extruded from the fourth cap winding means 50d is supplied around the wound body 17 while being moved by the driving means 47 along the outer surface of the rotating wound body 17. Then, the rubber member 45 (cap layer) made of the rubber type is formed.

  Next, when there is a change in the type of tire to be manufactured, the operation of the fourth cap winding means 50d that has been supplying the rubber strip 39 is stopped and separated from the wound body 17, The cap winding means 50 corresponding to the tire after the change, that is, any one of the first, second and third cap winding means 50a, 50b, 50c is brought close to the wound body 17, Thereafter, the rubber strip 39 is supplied from the cap winding means 50 around the wound body 17 rotating while being positioned on the cap winding stage CS in the same manner as described above. A rubber member 45 (cap layer) made of a rubber type is molded.

  In this way, a plurality of (four) cap winding means 50 for supplying the rubber strips 39 of different rubber types to the wound body 17 are installed on the sides of the cap winding stage CS, and the cap winding stage CS is provided. When the wound body 17 moves, the rubber strip 39 is supplied to the wound body 17 from any one of the plurality of cap winding means 50. Also, when the type of tire to be manufactured, specifically, the rubber type of the rubber member 45 is changed, the operation of the winding means 50 that has been supplying the rubber strip 39 is stopped and changed as described above. It can be dealt with by simply switching the operation to the winding means 50 for supplying the rubber strip 39 of the rubber type corresponding to the above, thereby enabling continuous production of various types of tires while improving the work efficiency, Generation of wasted rubber It is possible to suppress the easy.

  Here, the cap layer of the top tread is molded on the winding stage in which a plurality of winding means are installed as described above because the rubber type is changed relatively frequently when the type of tire is changed. If the rubber member 45 to be used is a top tread cap layer, such a situation can be easily coped with. Then, if the number of winding means installed in the plurality is the same as the number of types of rubber scheduled to be wound in the cap winding stage S where the winding means is installed, the type of tire is Regardless of how it is changed, the winding means corresponding to this change is installed in advance, and this can be easily dealt with.

  Also, two first and second side winding means 52a and 52b supported by a driving means (not shown) similar to the driving means 47 described above are installed on the right side of the side winding stage SS, The first and second side winding means 52a and 52b have the same structure as the base winding means 46. Here, the first and second side winding means 52a and 52b always extrude the rubber strip 39 of the same rubber type as the base winding means 46 even if the type of tire to be manufactured is changed. I have to.

  The first and second side winding means 52a and 52b are arranged around the wound body 17 (axis) when the wound body 17 moves to the side winding stage SS and rotates around the axis. A rubber strip 39 is supplied to the outer side in the direction and wound many times in a spiral shape to form a rubber member 45 (side tread) made of the rubber type. Here, unlike the above-described reason, the two first and second side winding means 52a and 52b are provided on the side of the side winding stage SS as described above. This is because the rubber strip 39 is simultaneously supplied from the two winding means 52 to both outer sides in the axial direction to form the rubber member 45 with high efficiency. In this way, winding means 46, 50, and 52 for forming different types of rubber members 45 (base layer, cap layer, side tread) are installed on the sides of the respective winding stages BS, CS, and SS. .

  In the above-described embodiment, only a side of the cap winding stage CS is a plurality of winding means for supplying the wound body 17 with rubber strips 39 of different rubber types according to changes in the type of tire. Although 50 is installed, in this invention, a rubber strip 39 of a different rubber type is supplied to the wound body 17 according to the change of the tire type on the side of the base winding stage BS or the side winding stage SS. A plurality of winding means 46, 52 may be installed. In short, winding means for supplying rubber strips of different rubber types to the wound body respectively to the side of at least one winding stage. You can install multiple units.

  Further, in the above-described embodiment, since the cap layer that is the rubber member 45 is composed of one kind of rubber, it is wound from one winding means 50 (initially the fourth cap winding means 50d). The rubber strip 39 is supplied to the body 17, but when the rubber member 45 is composed of two or more kinds of rubber, the wound body 50 is wound from the same number of winding means 50 as the number of rubber kinds. The rubber strip 39 may be supplied to 17 at the same time or while shifting the time. In short, the rubber strip may be supplied from at least one winding means to the wound body.

Next, the operation of the first embodiment will be described.
Here, the manufacturing process of the tire will be described by focusing on one wound body 17, but the similar wound body 17 is installed at the front and rear, and the work is simultaneously performed on other winding stages. . First, the moving table 12 and the forming drum 13 are transported to a carry-in stage immediately after the base winding stage BS by transport means (not shown) and placed on the guide rail 11. Next, when the tire intermediate body 16 such as a carcass band is supplied to the molding drum 13 stopped at the carry-in stage, the tire intermediate body 16 is after the both ends in the axial direction are gripped by the molding drum 13 from the inside. Then, it is bulged and deformed in a substantially toroidal shape, and becomes a wound body 17 together with the forming drum 13.

  Next, the chain 21 is moved forward by operating the motor, and the moving base 12 and the wound body 17 are moved forward along the guide rail 11 from the loading stage to the base winding stage BS by the locking piece 20 of the chain 21. Move to. Then, once the movement of the wound body 17 is stopped in the base winding stage BS, the wound body 17 is driven and rotated by the moving table 12. At this time, the sheet body is wound by the conveyor 25. It is supplied to the outside of the body 17 and wound, and a plurality of inclined belt plies are formed outside the wound body 17.

  Thereafter, while the base winding means 46 is moved along the outer surface of the wound body 17 by the driving means 47, the rubber strip 39 extruded from the base winding means 46 (extruder 37) is rotated. The rubber member 45 (the base layer of the top tread) is molded by being supplied around the wound body 17 and wound in a spiral manner. Next, the chain 21 is moved forward again to move the moving base 12 and the wound body 17 from the base winding stage BS to the cap winding stage CS and temporarily stop. Next, the cap winding means 50 corresponding to the currently manufactured tire, here the fourth cap winding means 50d, is driven along the outer surface of the wound body 17 rotating around the axis. The rubber strip 39 extruded from the fourth cap winding means 50d is supplied to the periphery of the wound body 17 while being moved by the above-mentioned wound body 17 and wound many times in a spiral manner, and a rubber member 45 ( A cap layer) is formed.

  When the tire type is different, the rubber strip 39 is supplied to the wound body 17 from any one of the first, second and third cap winding means 50a, 50b and 50c, and the different rubber types are used. A rubber member 45 (cap layer) is formed. Next, the chain 21 is moved forward again to move the moving base 12 and the wound body 17 from the cap winding stage CS to the side winding stage SS and temporarily stop. Next, while the two first and second side winding means 52a, 52b are moved by the driving means 47 along the outer surface of the rotating wound body 17, the winding body 17 A rubber strip 39 extruded from the first and second side winding means 52a, 52b is supplied to the periphery and wound in a spiral manner to form a rubber member 45 (side tread) made of the rubber type, Use unvulcanized tires.

  Thereafter, the chain 21 is moved forward again to move the moving base 12, the wound body 17 from the side winding stage SS to the carry-out stage, and after removing the unvulcanized tire from the molding drum 13 in the carry-out stage, It is conveyed to a vulcanizer and vulcanized to obtain a vulcanized tire. On the other hand, the forming drum 13 and the moving table 12 from which the unvulcanized tire has been removed are transported to the loading stage by the transporting means. In the present invention, the front end of the guide rail 11 is extended and connected to the rear end, so that the movable table 12 and the forming drum 13 may be returned from the carry-out stage to the carry-in stage by running the chain 21. .

  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 a top view of a drive means and a winding means. It is side surface sectional drawing of a to-be-wrapped body and an extruder vicinity.

Explanation of symbols

17… Wound body 22… Movement means
37 ... Extruder 39 ... Rubber strip
45 ... Rubber member 46, 50, 52 ... Winding means S ... Winding stage

Claims (5)

    While the wound body that can rotate around its own axis is sequentially moved to a plurality of winding stages by the moving means, in any winding stage, the winding means installed on the side of the winding stage In a tire manufacturing method in which a rubber strip is supplied around a wound body and wound many times in a spiral manner to form different types of rubber members constituting a part of the tire, respectively, at least one winding By installing a plurality of winding means for supplying rubber strips of different rubber types to the wound body on the side of the winding stage, when the wound body moves to the winding stage, a plurality of winding means are provided. A tire manufacturing method characterized in that a rubber strip is supplied to a wound body from at least one of the winding means.     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, and installed on the side of each winding stage, has moved to the winding stage. In the tire manufacturing apparatus provided with a winding means for supplying a rubber strip around the wound body and winding it in a spiral manner, and forming different types of rubber members constituting a part of the tire, respectively. When a plurality of winding means for supplying rubber strips of different rubber types to the wound body are installed on the sides of at least one winding stage, and the wound body has moved to the winding stage, A tire manufacturing apparatus, wherein a rubber strip is supplied to a wound body from at least one of the plurality of winding means.     The tire manufacturing apparatus according to claim 2, wherein the winding means includes an extruder for continuously extruding a rubber strip.     The tire manufacturing apparatus according to claim 2 or 3, wherein the rubber member formed on the winding stage provided with the plurality of winding means is a top tread cap layer.     5. The number of winding means installed in a plurality of units is the same as the number of types of rubbers scheduled to be wound in the winding stage in which the winding means is installed. Tire manufacturing equipment.

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