JP2010162704A - Method and apparatus for producing tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the accuracy of the positioning and lamination of a rubber strip by accurately laminating the rubber strip extruded from an extruder on a molded object by a lamination roller. <P>SOLUTION: The rubber extrusion front end of a mouthpiece 13 set in the extruder 10 is arranged close to the axis position lower part of the lamination roller 20, and the rubber strip G is extruded from the mouthpiece 13 toward the approaching lamination roller 20. The extruded rubber strip G is moved to the molded object H and pushed to the outside surface by the rotating lamination roller 20 and wound while being pressure-bonded with the rotation of the molded object H. By a movement means 30, the lamination roller 20 and the extruder 10 are moved unitedly along the outside surface of the molded object H. The rubber strips G are laminated in turn on the molded object H to form a rubber member, and an unvulcanized tire is molded. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tire manufacturing apparatus and a tire manufacturing method for manufacturing an unvulcanized tire by pressing and laminating a rubber strip against a molded body via a roller.

  In general, a pneumatic tire is manufactured by vulcanizing and molding an unvulcanized tire by sequentially arranging tire constituent members made of unvulcanized rubber or the like on a molded body. Further, when manufacturing this unvulcanized tire, conventionally, a rubber strip extruded from a die of an extruder is laminated on a molded body by a laminating roller to form a rubber member for each part of the tire such as a tread rubber. (See Patent Documents 1 and 2).

  However, in these conventional tire manufacturing apparatuses, the rubber strip extruded from the base is conveyed in the air to the relatively distant laminating rollers, and therefore, the supply position of the rubber strip to the laminating rollers is affected by the influence of vibration and deformation during conveyance. There is a risk that the accuracy of positioning and laminating of the rubber strip may decrease due to fluctuations. At the same time, the temperature of the rubber strip is likely to be lowered during conveyance, and the flexibility and plasticity thereof may be lowered, which makes it difficult to deform the rubber strip by the laminating roller during lamination. As a result, problems such as surface roughness, residual interlayer air, and bridging of members are likely to occur in the laminated rubber strip, and the shape accuracy may be reduced.

  Further, these conventional tire manufacturing apparatuses are arranged by shifting the axis of the laminating roller to a position higher than the axis of the molded body, or laminating coordinates (movement) for moving the laminating roller and the extruder during the laminating operation. The (coordinate) system is set without being orthogonal. Along with this, a large amount of calculation is required for the control of each movement and stacking, and there is a problem that the control becomes complicated.

JP 2003-266555 A Special table 2008-521653 gazette

  The present invention has been made in view of such a conventional problem, and an object of the present invention is to accurately laminate a rubber strip extruded from an extruder on a molded body by a laminating roller without requiring complicated control. Then, it is to increase the accuracy of positioning or lamination of the rubber strip or the accuracy of the shape.

The present invention is a tire manufacturing apparatus for manufacturing an unvulcanized tire by laminating a rubber strip extruded from a die of an extruder on a molded body, a laminating roller for laminating the rubber strip against the molded body, A rubber extrusion tip of the die is disposed in the molded object side range in the vicinity of the lamination roller for laminating the rubber strip, and includes an extruder for extruding the rubber strip toward the lamination roller.
The present invention also relates to a tire manufacturing method for manufacturing an unvulcanized tire by laminating a rubber strip extruded from a die of an extruder on a molded body by a laminating roller, wherein the rubber extruding tip of the die is adjacent to the laminating roller. And placing the rubber strip toward the lamination roller adjacent to the base, and pressing the extruded rubber strip against the molding body with the lamination roller and laminating. It is characterized by that.

  According to the present invention, the rubber strip extruded from the extruder can be accurately laminated on the molded body by the laminating roller without requiring complicated control, and the positioning accuracy of the rubber strip, the accuracy of the lamination, or the accuracy of the shape is improved. be able to.

It is a principal part side view which shows typically schematic structure of the tire manufacturing apparatus of this embodiment. It is a principal part side view which shows typically the state at the time of the lamination | stacking start of the rubber strip by the tire manufacturing apparatus of this embodiment. FIG. 3A is an enlarged view of a main part extracted and shown in the vicinity of the lamination roller and the base of FIG. 2, and FIG. 3B is a plan view as viewed from the top of FIG. 3A. 4A is an enlarged view of a main part extracted and shown in the vicinity of the lamination roller and the base of FIG. 1, and FIG. 4B is a plan view as viewed from the top of FIG. 4A. It is a side view which shows typically the cut | disconnected rubber strip.

Hereinafter, an embodiment of a tire manufacturing apparatus and a tire manufacturing method of the present invention will be described with reference to the drawings.
The tire manufacturing apparatus according to the present embodiment is configured such that a rubber strip extruded from a die of an extruder is attached to a rotating molded body via a lamination roller and laminated, and rubber of each part of the tire such as a tread rubber or a sidewall rubber. A member is formed to produce (mold) an unvulcanized tire.

FIG. 1 is a side view of an essential part schematically showing a schematic configuration of the tire manufacturing apparatus.
As shown in the figure, the tire manufacturing apparatus 1 includes a support 2 having an axis X arranged horizontally (in the drawing, the front-rear direction in the drawing), and a rubber strip G provided on the outer side in the radial direction of the support 2 (on the right in the drawing). Extruder 10 (shown through the inside in the figure) and a laminating roller 20 disposed therebetween.

  The support body 2 supports an object to be molded H so as to be rotatable around the axis X during molding of an unvulcanized tire, for example, a cylindrical molding drum that can be expanded or contracted, or an outer surface according to the inner surface shape of the unvulcanized tire. It consists of a rigid core having a shape. Here, the support body 2 is a molding drum that can rotate around the axis X, and a molded body H is formed by sequentially arranging or laminating tire constituent members and rubber strips G on the outer peripheral side thereof. The body H is held concentrically in an expanded state. Further, the support 2 has a rotation drive means (not shown) including a drive source such as a motor, a transmission mechanism of the rotation power, and the like, and is rotationally driven by this to rotate the workpiece H around the axis X. Is rotated at a predetermined rotation speed (arrow K in the figure) and stopped at an arbitrary rotation angle.

  Here, the to-be-molded body H is an object on which the rubber strip G is laminated at the time of molding an unvulcanized tire, and an unvulcanized tire or work-in-progress product in the middle of molding disposed on the support 2. Alternatively, an intermediate molded body or the like. Alternatively, when the rubber strip G is directly laminated on the support 2, a molding drum or a rigid core constitutes the molding H. On the other hand, the rubber strip G is a long rubber member formed and laminated in a ribbon shape, a belt shape, or the like. The rubber strip G is extruded by the extruder 10 and supplied to the molded object H through the lamination roller 20.

  The laminating roller 20 is a disk-shaped or cylindrical rotating body, and is supported by a holder 21 so as to be rotatable around the axis with the axis direction horizontal, and the outer peripheral surface is disposed in contact with the outer surface of the molded body H. . In this state, the laminated roller 20 rotates (arrow R in the figure) with the rotation of the abutting molded object H, and the molded object rotates while holding the rubber strip G extruded from the extruder 10 on the outer peripheral surface. Move to a predetermined stacking position of H, press against the outer surface and crimp. In this way, the lamination roller 20 attaches the rubber strip G supplied from the extruder 10 to the molded body H, for example, the outer surface of the support 2 or the lower rubber strip G, or a tire constituent member that has already been arranged. Then, the rubber member having a predetermined shape is formed by sequentially winding and spirally winding in the circumferential direction.

  The laminating roller 20 is provided with a heating means (not shown) including a heater or the like disposed inside. The tire manufacturing apparatus 1 heats the laminating roller 20 and the rubber strip G in contact with the outer peripheral surface by the heating means, heats the rubber strip G laminated on the molded body H to a predetermined temperature, and sets the temperature to the temperature at the time of extrusion. The flexibility or plasticity of the rubber strip G is adjusted by maintaining the temperature or heating to a set temperature.

  The extruder 10 includes a main body 11 that heats and kneads the unvulcanized rubber M supplied therein and moves it upward, and an extrusion head connected to the main body 11 via a gear pump (not shown) or the like. 12 and a base 13 attached to a rubber discharge port of the extrusion head 12. In this extruder 10, the extrusion head 12 and the base 13 are provided so as to protrude horizontally toward the molding body H, and the rubber extrusion tip of the base 13 for pushing out the rubber strip G is opposed to the outer surface of the molding body H. And arranged close to the lower side of the laminating roller 20. The extruder 10 extrudes rubber toward the predetermined extrusion direction (arrow D in the figure) (here, the horizontal direction) from the opening of the base 13 at a position lower than the axis X of the support 2, and the shape of the opening A rubber strip G having a cross-sectional shape corresponding to the above is formed and continuously supplied to the molding H through the rotating laminating roller 20. Further, a connecting member 22 that protrudes upward is provided at the upper end of the extruder 10, and a first piston / cylinder mechanism 23 and a second piston / cylinder mechanism 24 that have a cylinder 23 </ b> S attached to the upper surface thereof. Thus, the laminated rollers 20 are integrally connected.

  In the first piston / cylinder mechanism 23, a piston rod 23P that advances and retreats from the cylinder 23S is arranged in a horizontal direction (left and right in the drawing) perpendicular to the axis X direction toward the support 2, and extends along the same direction. Then, the piston rod 23P is moved back and forth (arrow F in the figure). As a result, the first piston / cylinder mechanism 23 moves the cylinder 24S of the second piston / cylinder mechanism 24 attached to the tip of the piston rod 23P to approach and separate the molding target H. In the second piston / cylinder mechanism 24, the piston rod 24P that advances and retreats from the cylinder 24S is disposed in the vertical direction perpendicular to the advancing and retreating direction F of the piston rod 23P in the downward direction, and the piston rod 24P extends along the same direction. Is moved forward and backward (arrow J in the figure). Thereby, the 2nd piston and cylinder mechanism 24 moves the holder 21 attached to the lower end of piston rod 24P, and the lamination | stacking roller 20 to an up-down direction.

  The tire manufacturing apparatus 1 constitutes a moving mechanism of the laminated roller 20 by the piston / cylinder mechanisms 23 and 24 and operates them synchronously so that the laminated roller 20 is moved forward and backward with respect to the extruder 10. Move to F, J. By moving in both directions, the stacking roller 20 is moved closer to and away from the molded body H and pressed against the outer surface with a predetermined pressure. In this state, the laminated roller 20 is moved in the circumferential direction along the outer surface of the molded body H. At each stage of vulcanized tire molding, it is arranged at each preset position. Moreover, the tire manufacturing apparatus 1 includes a moving unit 30 that moves the extruder 10 between the extruder 10 and the floor surface. The moving unit 30 moves the extruder 10 together with the lamination roller 20 to the outer surface of the molding H. Move around along. Thereby, the extruder 10 and the laminating roller 20 are moved integrally according to the extrusion speed of the rubber strip G, the laminating position on the molded body H, etc., and the rubber strip G is placed at a predetermined position of the rotating molded body H. Supply.

  The moving means 30 has a swivel table 31 that can swivel integrally with the extruder 10 disposed on the upper surface, and a direction parallel to the axis X of the support 2 (hereinafter referred to as X direction). And a moving stage (XY stage) 40 movably supported in a horizontal plane (XY plane) including the Y direction orthogonal to the X direction. Further, the moving means 30 has a cylindrical shaft member 32 for turning the turning table 31, and the shaft member 32 is pushed out of the turning table 31 with its turning axis (turning axis S) being vertical. It is fixed between the machine 10 and the molded body H. Further, the moving means 30 has, for example, a turning means (not shown) including a motor and a power transmission mechanism provided with a plurality of meshing gears for transmitting the rotational power to the shaft member 32. The member 32 is rotated to turn the turning table 31 around the turning axis S by a predetermined angle θ in a horizontal plane.

  The moving stage 40 includes a plurality of guide rails 41 arranged along the Y direction and parallel to each other, and a plurality (two in the figure) of sliders 42 movable in the longitudinal direction (Y direction) on each guide rail 41. And a first moving table 43 fixed to the upper surfaces of the plurality of sliders 42. The moving stage 40 includes a plurality of guide rails 44 arranged along the X direction on the upper surface of the first moving table 43, and a plurality of movable portions 40 that are movable in the longitudinal direction (X direction) on each guide rail 44. The slider 45 and the second moving base 46 fixed to the upper surfaces of the plurality of sliders 45 are provided, and the turntable 31 is rotatably disposed on the upper surface. The moving stage 40 moves the swivel table 31 and the extruder 10 in the X direction along the guide rail 44 via the slider 45 together with the second moving table 46, and the slider along with the first moving table 43. It is moved in the Y direction along the guide rail 41 via 42.

  Furthermore, the moving stage 40 is provided with driving means (not shown) for moving the moving platforms 43 and 46 in the Y direction and the X direction, respectively, and stopping them at arbitrary positions. , 46 are moved in each direction independently of each other. The moving means 30 continuously moves the swivel table 31 and the extruder 10 to arbitrary positions in the horizontal plane in accordance with the movement of the moving bases 43 and 46, and approaches and separates the molding target H from the predetermined position. The turning table 31 is turned around the turning axis S while being arranged at the position. In this way, the moving means 30 moves the laminating roller 20 for laminating the rubber strip G and the extruder 10 together in synchronism according to the laminating operation, so that the laminating roller 20 abuts on the workpiece H. While moving, it is moved in the X direction and the Y direction (radial direction) parallel to the axis X of the support 2 along the outer surface. At the same time, the moving means 30 rotates the extruder 10 according to the outer surface of the molded body H so that the laminated roller 20 abuts perpendicularly to the outer surface of the molded body H. Is pressed toward the axis X.

  In this embodiment, at the time of steady lamination in which the rubber strips G are continuously laminated, the axial height of the laminating roller 20 for laminating the rubber strips G and the support body 2 (molded) by the above-described piston / cylinder mechanisms 23 and 24. The body H) is arranged such that the axis X heights thereof coincide with each other. Further, the moving means 30 arranges the swivel axis S of the extruder 10 in accordance with the pressing position of the rubber strip G against the molded object H by the lamination roller 20, and the swivel axis S, the lamination roller 20 and the molded object. The extruder 10 is moved in the X and Y directions orthogonal to each other and swiveled around the swivel axis S while maintaining the H contact position (pressing position) in agreement. In this way, the laminating coordinate system for moving the laminating roller 20 and the extruder 10 during the laminating operation is orthogonalized, and the laminating roller 20 and the extruder are based on the contact position of the laminating roller 20 and the molding H. The X direction, the Y direction, and the turning angle θ of 10 are set, and the stacking operation is executed by moving and turning the stacking roller 20 and the extruder 10 based on each setting.

  Next, a description will be given of procedures and operations for manufacturing a tire by forming a rubber member of each part of the tire by laminating the rubber strip G on the molded body H by the tire manufacturing apparatus 1 and molding an unvulcanized tire. The following procedures and the like are controlled by a control device (not shown) and executed by causing each unit of the devices connected based on a predetermined program to perform related operations at preset timings and conditions. This control device is composed of, for example, a computer having a microprocessor (MPU), a ROM (Read Only Memory) for storing various programs, and a RAM (Random Access Memory) for temporarily storing data directly accessed by the MPU. Each part of the apparatus is connected via connection means. Thereby, a control apparatus transmits / receives a control signal and various data with each part of an apparatus, and performs each operation | movement regarding unvulcanized tire shaping | molding, respectively.

FIG. 2 is a side view of a main part schematically showing a state at the start of the lamination of the rubber strip G by the tire manufacturing apparatus 1. 3A is an enlarged view of a main part extracted and shown in the vicinity of the laminating roller 20 and the base 13 of FIG. 2, and FIG. 3B is a plan view as viewed from the top of FIG. 3A.
As shown in FIG. 2, the tire manufacturing apparatus 1 operates the two piston / cylinder mechanisms 23, 24 and the moving means 30, and first arranges the axis of the laminated roller 20 higher than the axis X of the molded body H. Then, the outer circumferential surface of the lamination roller 20 is pressed against the outer circumferential surface of the molding H (see FIG. 3). Moreover, the rubber | gum extrusion front-end | tip of a nozzle | cap | die 13 is made to approach the to-be-molded body H, arrange | positions it at predetermined distance without contacting them, and the rubber | gum extrusion of the extruder 10 and rotation of the support body 2 are started synchronously. . Thereby, the supply of the rubber strip G from the base 13 and the rotation of the molded body H are started simultaneously, the tip of the extruded rubber strip G is brought into contact with the molded body H, and the rubber strip G is then molded. Affix in order in the circumferential direction as H rotates. At the same time, the rubber strip G is pressed against the molding object H by the laminating roller 20 that rotates in contact with the molding object H and is pressure-bonded.

  Subsequently, the tire manufacturing apparatus 1 does not change the position of the laminating roller 20 with respect to the molded body H at a predetermined timing, such as when a predetermined time has elapsed from the start of extrusion of the rubber strip G. Is moved away from the molded body H (arrow Y1 in FIGS. 2 and 3A). As a result, the base 13 is separated from the molded body H, and when the distance between the rubber extrusion tip of the base 13 and the outer surface of the molded body H reaches a predetermined distance, the movement of the extruder 10 is stopped, and the base 13 Is disposed at a regular laminating position where the rubber strip G is continuously laminated on the molded body H. Next, the lamination roller 20 is lowered by the second piston / cylinder mechanism 24 and moved in the circumferential direction along the outer surface of the molding H (arrow J1 in FIGS. 2 and 3A). The stacking rollers 20 are arranged at the steady stacking positions with the axial heights of the molded bodies H being matched with each other. In this way, the tire manufacturing apparatus 1 prevents the interference with the base 13 that moves by moving the laminating roller 20 up and down, and gradually moves it to each of the above-described regular laminating positions, so that the base 13 and the molded body are moved. The rubber strip G with H is brought into contact with the outer peripheral surface of the opposite laminated roller 20 (see FIG. 1).

4 is a view showing the state after the base 13 and the laminating roller 20 are moved in correspondence with FIG. 3, and FIG. 4A is an enlarged view of the main part extracted from the vicinity of the laminating roller 20 and the base 13 in FIG. 4B is a plan view as viewed from the arrow T in FIG. 4A.
When the rubber strip G is continuously laminated, the tire manufacturing apparatus 1 temporarily holds the rubber strip G pushed out from the base 13 on the outer peripheral surface with which the lamination roller 20 contacts, as shown in FIGS. 1 and 4. . The rubber strip G is moved to the molding body H by the rotating laminating roller 20 and pressed against the outer surface of the molding body H to be pressure-bonded and wound in the circumferential direction to be laminated.

  At the time of this regular lamination (winding), the tire manufacturing apparatus 1 places the base 13 close to the lamination roller 20 on which the rubber strip G is laminated, and pushes the rubber strip G from the base 13 of the extruder 10 onto the lamination roller 20. Supply. At this time, in the present embodiment, the rubber extrusion tip of the base 13 is the part farthest from the molded body H of the laminating roller 20 as viewed in the extrusion direction D of the rubber strip G from the base 13 (left-right direction in FIG. 4A). Rather than the range to be molded H (range E in FIG. 4A) (in the present invention, this range is referred to as the range to be molded). Thus, the tire manufacturing apparatus 1 arranges the rubber extrusion tip of the base 13 in the range to be molded near the lamination roller 20 and follows the outer surface of the base 13 toward the lamination roller 20 adjacent to the base 13. Extrude the rubber strip G into

  Here, the rubber extruding tip of the base 13 is arranged as close as possible to the outer peripheral surface within a range overlapping with the laminating roller 20 when viewed in the extruding direction D, and the rubber extruding tip is thus arranged in the laminating roller. Arranged below the 20 axis. The tire manufacturing apparatus 1 extrudes the rubber strip G from the mouthpiece 13 of the extruder 10, moves the rubber strip G upwardly by the laminating roller 20, and sandwiches it between the molded body H. Crimp sequentially. Further, the base 13 is formed in an arcuate curved surface whose outer surface (the upper surface in FIG. 4A) facing the laminating roller 20 is curved along the outer peripheral surface of the laminating roller 20 according to the curvature thereof. The laminated rollers 20 are arranged to face each other. In addition, it is preferable to arrange | position the rubber | gum extrusion front-end | tip of a nozzle | cap | die 13 so that it may be located in the just under the axis line of the lamination | stacking roller 20 as mentioned above.

  As described above, the tire manufacturing apparatus 1 arranges the base 13 and the lamination roller 20 at each regular lamination position, and the lamination roller 20 for laminating the rubber strip G is in a state in which the molding H and the axial line height coincide with each other. The moving means 30 moves along the outer surface of the molded body H integrally with the extruder 10 (arrow X1 in FIG. 4B). At the time of this movement, the moving unit 30 maintains the relative position between the lamination roller 20 and the extruder 10 with the contact position between the lamination roller 20 and the molded body H as a reference, and the extruder 10 Move in a horizontal plane. Further, as described above, the rotation axis S of the extruder 10 is aligned with the pressing position L of the rubber strip G against the molded object H by the laminated roller 20, so that the laminated roller 20 and the extruder 10 are connected to the molded object H. Is turned around the same angle θ (in FIG. 4B, the after turn is indicated by a broken line).

  The tire manufacturing apparatus 1 continuously moves the laminating roller 20 and the extruder 10 in this manner, and the rubber strip G extruded from the base 13 is continuously spiraled while being partially superposed on the molded body H by the laminating roller 20. Then, the rubber member having a predetermined shape is formed by, for example, laminating one layer or a plurality of layers and bonding the layers together. At that time, the tire manufacturing apparatus 1 performs laminating while heating the rubber strip G by heating the laminating roller 20 with the above-described heating means, and sequentially forming rubber members on each part of the molded body H to form an unvulcanized tire. Is formed (manufactured). At the end of the formation of one rubber member, the extrusion of the rubber strip G from the base 13 is stopped while the rotation of the molded body H and the lamination roller 20 is continued, and the rear end of the rubber strip G is cut.

FIG. 5 is a side view schematically showing the cut rubber strip G. FIG.
As shown in the drawing, the rear end of the rubber strip G is pulled by the rotating laminating roller 20 between the base 13 and the laminating roller 20 to apply tension, and is stretched between them, and is torn on the base 13 side. It is cut in this way. As a result, the rear end of the rubber strip G becomes gradually thinner or thinner, and is laminated by being pressed against the molded body H by the laminating roller 20 up to the cut end without causing any disturbance in the laminating position. The tire manufacturing apparatus 1 thus completes the lamination of the rubber strip G, and manufactures an unvulcanized tire by combining other tire constituent members. Thereafter, the unvulcanized tire is removed from the support 2 and vulcanized and molded to produce a product tire.

  As described above, in this embodiment, when the rubber strip G is laminated, the rubber extrusion tip of the base 13 is disposed at a predetermined proximity position of the lamination roller 20, and the rubber strip G is adjacent to the base 13. And is laminated on the molding H. Thus, since the rubber strip G is moved to the molding body H by the laminating roller 20 without being conveyed in the air, the operation and control for laminating can be performed relatively simply and smoothly. In addition, since the rubber strip G can be accurately supplied to the laminating roller 20 and fluctuations in the supply position can be reduced without being affected by vibration, deformation, etc. associated with long-distance conveyance, the rubber strip G can be applied to the molding H. Accurate pressing can be performed and the rubber strip G can be positioned and laminated more accurately. At the same time, the temperature drop of the rubber strip G can be suppressed and the flexibility and plasticity thereof can be prevented from being lowered. At the time of lamination, the rubber strip G is surely moved by the laminating roller 20 to the lamination position of the molding H. Accurate pressure bonding can be used for lamination. As a result, the laminated rubber strip G is less likely to have rough surfaces, residual interlayer air, bridging between members, and the like, and the shape accuracy of the laminated rubber members can be increased.

  Therefore, according to the present embodiment, the rubber strip G extruded from the extruder 10 can be accurately laminated on the molded body H by the laminating roller 20 without requiring complicated control, and the rubber strip G can be positioned and laminated. Accuracy or shape accuracy can be increased. In the tire manufacturing apparatus 1, the outer surface of the base 13 facing the lamination roller 20 is formed in a curved shape along the outer peripheral surface of the lamination roller 20, and the outer surface of the base 13 is disposed along the lamination roller 20. Therefore, the rubber extrusion tip of the base 13 can be disposed closer to the lamination roller 20, and the above effects can be further enhanced. Further, by heating the laminating roller 20 and the rubber strip G at the time of laminating, the rubber strip G can be kept constant by preventing a decrease in flexibility and plasticity thereof, or they can be adjusted as appropriate to adjust the rubber strip G. Positioning accuracy and the like can be effectively improved. On the other hand, when the lamination of the rubber strip G is started, the tip of the rubber strip G is disposed on the molded body H without bringing the base 13 into contact with the molded body H. The shape accuracy of the laminated rubber members can be increased. Further, at the start of the lamination, the rubber strip G is arranged on the molding object H stably and accurately, because the tip of the rubber strip G is arranged on the molding object H without using the lamination roller 20. You can also.

  In addition, in the tire manufacturing apparatus 1, when the laminating roller 20 is moved integrally with the extruder 10 along the outer surface of the molded body H, the swivel axis S of the extruder 10 is moved to the rubber strip G by the laminating roller 20. In accordance with the pressing position L, the lamination roller 20 and the extruder 10 are turned around the molding target H. As a result, since the turning and movement can be set mainly based on the pressing position L by the stacking roller 20, each operation and control at the time of stacking can be easily and accurately compared to the case where a larger number of references are required. It can be executed, and calculations and settings for it can be easily performed. Further, by moving the laminating roller 20 integrally with the extruder 10 in a state where the molding H and the axial line height coincide with each other, the setting of each movement and turning operation becomes simpler, and complicated calculation and control are performed. Therefore, the stacking operation can be executed with easier and more accurate control. At this time, from the viewpoint of further simplifying the operation at the time of stacking and reducing the amount of calculation for control, it is desirable that the above-described stacked coordinate systems including the X direction, the Y direction, and the pivot axis S are orthogonal to each other.

  The rubber strip G may be supplied between the two opposing rollers and supplied to the molding H. In this case, the tip (start of winding) of the rubber strip G that has passed between the rollers, It is difficult to always guide and supply to the set roller side. On the other hand, in this tire manufacturing apparatus 1, since the rubber strip G is laminated by the single laminating roller 20, the rubber strip G can be reliably moved to the molding body H and supplied.

  The tire manufacturing apparatus 1 is used for forming various tires before vulcanization, such as unvulcanized retreaded tires in which a rubber strip G is laminated to form a tread rubber or the like in addition to a raw tire (green tire). be able to. Therefore, the unvulcanized tire of the present invention includes various tires that are formed by laminating the extruded rubber strip G on the molded body H in addition to the raw tire. On the other hand, the to-be-molded body H includes an in-process unvulcanized tire in which a tire constituent member is arranged on a support 2 such as a molding drum or a rigid core, and there is no particular limitation on the configuration of the shape and the like.

  DESCRIPTION OF SYMBOLS 1 ... Tire manufacturing apparatus, 2 ... Support body, 10 ... Extruder, 11 ... Main-body part, 12 ... Extrusion head, 13 ... Base, 20 ... Lamination roller, 21・ ・ ・ Holder, 22 ... Connecting member, 23 ... First piston / cylinder mechanism, 24 ... Second piston / cylinder mechanism, 30 ... Moving means, 31 ... Swivel table, 32 ... shaft member, 40 ... moving stage, 41 ... guide rail, 42 ... slider, 43 ... first moving table, 44 ... guide rail, 45 ... slider, 46 ... 2nd moving stand, G ... Rubber strip, H ... Molded object, S ... Turning axis.

Claims (10)

A tire manufacturing apparatus for manufacturing an unvulcanized tire by laminating a rubber strip extruded from a die of an extruder on a molded body,
A laminating roller for laminating a rubber strip against a molded body;
An extruder for extruding the rubber strip toward the lamination roller, the rubber extrusion tip of the die being disposed in the range to be molded side in the vicinity of the lamination roller for laminating the rubber strip;
A tire manufacturing apparatus comprising: In the tire manufacturing apparatus according to claim 1,
A tire manufacturing apparatus, wherein an outer surface of the die facing the lamination roller is formed in a curved shape along the outer circumferential surface of the lamination roller. In the tire manufacturing apparatus according to claim 1 or 2,
A tire manufacturing apparatus comprising heating means for heating a rubber strip to be laminated on a molded body by heating a lamination roller. In the tire manufacturing apparatus according to any one of claims 1 to 3,
A moving means for moving a laminating roller for laminating rubber strips integrally with the extruder along the outer surface of the molded body;
A tire manufacturing method characterized in that the moving means has means for rotating the laminating roller and the extruder around the molded body by aligning the rotation axis of the extruder with the pressing position of the rubber strip against the molded body by the laminating roller. apparatus. In the tire manufacturing apparatus according to claim 4,
Comprising means for arranging the laminated rollers and the molded body so that the axial heights thereof coincide with each other;
A tire manufacturing apparatus characterized in that the moving means moves the lamination roller integrally with the extruder in a state where the axis height coincides with that of the molded body. A tire manufacturing method for manufacturing an unvulcanized tire by laminating a rubber strip extruded from a die of an extruder on a molded body by a laminating roller,
A step of placing the rubber extrusion tip of the die close to the lamination roller in the range to be molded; and
A process of extruding a rubber strip from the base toward the adjacent laminated roller;
A process of laminating the extruded rubber strip against a molding by a laminating roller; and
A tire manufacturing method comprising: In the tire manufacturing method according to claim 6,
The tire manufacturing method characterized in that the step of arranging includes a step of arranging the outer surface of a base formed in a curved shape along the outer peripheral surface of the laminated roller so as to face each other along the laminated roller. In the tire manufacturing method according to claim 6 or 7,
A tire manufacturing method comprising a step of heating a rubber strip to be laminated on a molded body by heating a lamination roller. In the tire manufacturing method according to any one of claims 6 to 8,
Having a step of moving a laminating roller for laminating rubber strips integrally with the extruder along the outer surface of the molding;
The moving step includes a step of turning the laminating roller and the extruder around the molding object by aligning the rotation axis of the extruder with the pressing position of the rubber strip against the molding object by the laminating roller. Tire manufacturing method. In the tire manufacturing method according to claim 9,
A step of arranging the laminated rollers and the molded body so that the axial heights thereof coincide with each other;
The tire manufacturing method characterized in that the moving step moves the laminating roller integrally with the extruder in a state where the axial line height coincides with the molded body.

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