Device and method for manufacturing cylindrical tire member

Abstract

To provide a device and a method for a cylindrical tire member which can concisely move supplied belt-like tire materials in a drum width direction to position at and wind around a reference position of a molding drum body, and accurately grasp a degree of the positioning.SOLUTION: A molding drum body 6 is configured so that a drum moving mechanism 7 moves sensors 10a and 10b in a drum width direction. The sensors 10 and 10b sequentially sense data on positions in a width direction of a tire material M1, supplied in a flatly placed state through a conveyor 16a, on the molding drum body 6. On the basis of data on installation positions in a width direction of the sensors 10a and 10b with respect to the molding drum body 6 and data on a position in the width direction of the tire material M1 sequentially inputted to a control part 17, a position in the width direction over a whole length of the tire material M1 with respect to a reference position in the width direction of the molding drum 6 is calculated.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to an apparatus and method for manufacturing cylindrical tire components, and more particularly to an apparatus and method for manufacturing cylindrical tire components that can easily and easily move a forming drum body in the drum width direction, position a strip-shaped tire material supplied in a flat state by a conveyor at a reference position in the width direction of the forming drum, and wind the material thereon, while accurately grasping the degree of positioning. [Background technology]

[0002] A tire is manufactured by vulcanizing a green tire. A green tire is formed by stacking many types of tire materials. When a belt-shaped tire material is supplied in a flat state by a conveyor and wound around a forming drum to form a cylindrical shape, various proposals have been made to align the widthwise center position of the supplied tire material with the widthwise center position of the forming drum and wind the tire material in order to prevent the tire material from meandering (see, for example, Patent Document 1). Conventionally, as proposed in Patent Document 1, the widthwise center position of the tire material is calculated sequentially based on widthwise position data of the tire material placed on the conveyor detected by a measuring instrument (sensor). Then, the difference between the calculated widthwise center position of the tire material and the widthwise center position of the forming drum is calculated sequentially, and the conveyor is moved in the width direction so as to make this difference zero.

[0003] When moving the forming drum in the width direction instead of moving the conveyor in the width direction to make the difference between the width direction center positions of the two zero, it is necessary to sequentially calculate the width direction center position of the tire material as described above and sequentially calculate the width direction center position of the forming drum. Therefore, the calculation process becomes complicated, and if there is an error in the calculation of either of the width direction center positions of the two width direction centers, it is not possible to make the difference between the two zero and accurately wind the tire material. Even if the tire material is wound by controlling the movement of the forming drum in the width direction in this way, it is not possible to grasp how accurately the width direction center position of the tire material is actually positioned relative to the width direction center position (reference position) of the forming drum and wound. Therefore, although it is simple, there is room for improvement in moving the forming drum in the drum width direction, positioning the band-shaped tire material at the reference position in the width direction of the forming drum, winding it, and accurately grasping the degree of positioning. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-127986 A Summary of the Invention [Problem to be solved by the invention]

[0005] The object of the present invention is to provide an apparatus and method for manufacturing cylindrical tire components, which is simple and capable of winding a strip of tire material supplied in a flat state by a conveyor by moving the forming drum body in the drum width direction and positioning it at a reference position in the width direction of the forming drum, and which can accurately grasp the degree of positioning. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a manufacturing apparatus for cylindrical tire components, comprising: a conveyor for supplying a strip-shaped tire material in a flat state; a forming drum body around which the tire material supplied by the conveyor is wound to form a cylindrical shape; and a drum moving mechanism for moving the forming drum body in the drum width direction, the manufacturing apparatus for cylindrical tire components comprises: a sensor for detecting the tire material on the forming drum body; a control unit to which width direction position data of the tire material on the forming drum detected by the sensor is sequentially input; and a connecting unit for connecting the forming drum body and the sensor and moving the sensor in the drum width direction together with the forming drum body, wherein the forming drum body is moved in the drum width direction by the drum moving mechanism, so that the tire material is wound around the forming drum body while suppressing meandering, and the control unit calculates the width direction position of the tire material over the entire length relative to a reference position in the width direction of the forming drum body based on the width direction installation position data of the sensor relative to the forming drum body and the width direction position data sequentially input to the control unit.

[0007] The present invention relates to a method for manufacturing a cylindrical tire component, in which a strip-shaped tire material supplied in a flat state by a conveyor is wound around a forming drum body to form it into a cylindrical shape, and the forming drum body is moved in the drum width direction by a drum moving mechanism to suppress meandering and wind the tire material on the forming drum body.The method is characterized in that the forming drum body and a sensor are connected by a connecting part, and the sensor is moved in the drum width direction together with the forming drum body by the drum moving mechanism, and width direction position data of the tire material on the forming drum body detected by the sensor is sequentially input to a control unit, and the control unit calculates the width direction position of the tire material over the entire length relative to a reference position in the width direction of the forming drum body based on the width direction installation position data of the sensor relative to the forming drum body and the width direction position data sequentially input to the control unit. Effect of the Invention

[0008] According to the present invention, when winding the tire material around the forming drum body, by moving the forming drum body in the drum width direction, it is advantageous to suppress meandering and position the tire material at the reference position in the width direction of the forming drum body and wind it. Since the sensor and the forming drum body are connected and move together in the drum width direction, the width direction installation position data of the sensor with respect to the forming drum body remains unchanged regardless of the width direction movement of the forming drum body, and the difference from the reference position of the forming drum body becomes a known value that is grasped in advance. Therefore, it is advantageous to accurately calculate the width direction position of the tire material over the entire length with respect to the reference position of the forming drum body based on the width direction installation position data of the sensor with respect to the forming drum body and the width direction position data sequentially input to the control unit. In other words, it is possible to accurately grasp the degree to which the width direction position of the tire material wound around the forming drum body matches (misaligns) with the reference position, thereby ensuring quality. In this way, even with the simple configuration of connecting the sensor and the forming drum body and moving them together in the drum width direction, the tire material can be positioned at a reference position in the width direction of the forming drum body and wound thereon, and the degree of positioning can be accurately grasped. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is an explanatory diagram illustrating an embodiment of a manufacturing apparatus for a cylindrical tire member in a plan view. [Diagram 2] FIG. 2 is an explanatory diagram illustrating the manufacturing apparatus of FIG. 1 as viewed from the front. [Diagram 3] 2 is an explanatory diagram illustrating the manufacturing apparatus of FIG. 1 in a side view. [Figure 4] FIG. 2 is an enlarged view of the drum unit in FIG. [Diagram 5] 2 is an explanatory diagram illustrating a state in which the drum unit in FIG. 1 has been moved to one winding position in a plan view. FIG. [Figure 6] 6 is an explanatory diagram illustrating the drum unit in FIG. 5 as seen from the side. [Figure 7]6 is an explanatory diagram illustrating a state in which the tire material is being wound onto a building drum body at the winding position in FIG. 5. [Figure 8] 8 is an explanatory diagram illustrating the drum unit in FIG. 7 as seen from the side. [Figure 9] 8 is an explanatory diagram illustrating a state in which the drum unit in FIG. 7 has been moved to the other winding position in a plan view. FIG. [Figure 10] 10 is an explanatory diagram illustrating the drum unit in FIG. 9 as seen from the side; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and method for manufacturing a cylindrical tire member according to the present invention will be described with reference to the embodiments shown in the drawings.

[0011] Using the embodiment of the manufacturing apparatus 1 for a cylindrical tire component illustrated in Figs. 1 to 4, strip-shaped tire materials M1, M2 supplied by conveyors 16a, 16b are wound around a molding drum body 6 to manufacture a cylindrical tire component M. For example, an inner liner and a carcass material are used as the tire materials M1, M2 and sequentially supplied to the molding drum body 6, and an inner liner layer and a carcass layer are manufactured and laminated as the cylindrical tire component M. A green tire G is molded using the inner liner layer and the carcass layer. The molded green tire G is vulcanized to manufacture a tire T.

[0012] The manufacturing apparatus 1 includes a drum unit 2 including a forming drum body 6, conveyors 16a and 16b, and a control unit 17. The drum unit 2 is divided into a base part 3 and an upper structure part 4, and the base part 3 and the upper and lower structures 4 are connected by a vertical movement mechanism 9. The drum unit 2 is the entire structure including the base part 3, the upper structure part 4, and the vertical movement mechanism 9. The X, Y, and Z arrows in the figure respectively indicate the width direction, the front-rear direction, and the height direction of the manufacturing apparatus 1 (the drum unit 2 and the forming drum body 6), which are perpendicular to each other. In the figure, the direction from the conveyors 16a and 16b toward the forming drum body 6 in the front-rear direction (Y direction) is the front.

[0013] The conveyors 16a, 16b are belt conveyors or similar conveying means for supplying the tire materials M1, M2 in a flat state to the building drum body 6. A plurality of conveyors 16a, 16b are arranged in parallel in the width direction. Each of the conveyors 16a, 16b is basically fixed at a certain position on the ground and does not move. In this embodiment, the front ends of the conveyors 16a, 16b are set at substantially the same positions in the front-rear direction, and are set at slightly different positions in the up-down direction. The front ends of the conveyors 16a, 16b may be set at different positions in the front-rear direction, or may be set at substantially the same positions in the up-down direction.

[0014] The base part 3 is placed on a guide rail 2a that extends in the width direction on the ground. A drive motor and other components that constitute a slide movement mechanism 8 are installed on the base part 3. As the slide movement mechanism 8, various known mechanisms that move the base part 3 along the guide rail 2a can be used. When the base part 3 is moved along the guide rail 2a by the slide movement mechanism 8, the drum unit 2 moves as a unit in the width direction.

[0015] The upper structure 4 includes a mounting plate 5a, a slide plate 5b, a forming drum body 6, a rotary drive unit 6a, a drum moving mechanism 7, sensors 10a, 10b (collectively referred to as sensors 10), a sensor slide mechanism 12, and a sensor lifting mechanism 13. A vertical movement mechanism 9 is connected to the lower surface of the mounting plate 5a, and the slide plate 5b and the drum moving mechanism 7 are installed on the mounting plate 5a.

[0016] The slide plate 5b is moved in the width direction relative to the mounting plate 5a by a drum moving mechanism 7. The slide plate 5b is engaged with, for example, a groove extending in the width direction formed in the mounting plate 5a. As the drum moving mechanism 7, various known mechanisms such as a fluid cylinder or a rod moved forward and backward by a servo motor can be used. The drum moving mechanism 7 is a separate mechanism from the slide moving mechanism 8.

[0017] A forming drum body 6 and a rotary drive unit 6a are installed on the slide plate 5b. Tire materials M1 and M2 supplied by conveyors 16a and 16b are wound around the forming drum body 6 to form it into a cylindrical shape. A drum axis C of the forming drum body 6 extends in the X direction. The forming drum body 6 is rotated about the drum axis C by the rotary drive unit 6a.

[0018] A support pillar 14 is erected on the rotary drive unit 6b, and a cross beam 14a extending in the width direction is connected to the support pillar 14. A gate-shaped support frame 15 is fixed to the cross beam 14a. A sensor support beam 11 extending in the width direction is spanned across the support frame 15. As illustrated in FIG. 3, the support pillar 14 is inclined upward toward the opposite side of the conveyors 16a, 16b at a midpoint in the height direction, and the inclination angle S with respect to the horizontal is set to about 45° (for example, 30° to 60°). The support frame 15 is also inclined at this inclination angle S.

[0019] Two sensors 10a, 10b are installed at an interval in the width direction on the sensor support beam 11. The sensors 10a, 10b are moved to desired positions in the width direction along the sensor support beam 11 and fixed there by their respective sensor slide mechanisms 12. As the sensor slide mechanism 12, various known mechanisms such as a rod moved forward and backward by a servo motor or a fluid cylinder can be used.

[0020] The sensor support beam 11 is raised and lowered at an inclination angle S along the support frame 15 by the sensor lifting mechanism 13, and is fixed at a desired position in the height direction. In this embodiment, the sensor lifting mechanism 13 is installed on the cross beam 14a, and its advancing and retreating rod is connected to the sensor support beam 11. As the sensor lifting mechanism 13, various known mechanisms such as a rod that advances and retreats with a fluid cylinder or a servo motor can be used. When the sensor support beam 11 is raised and lowered by the sensor lifting mechanism 13, the sensor 10 is raised and lowered at an inclination angle S, and is fixed at a desired position in the height direction. The sensor lifting mechanism 13 can be provided as desired.

[0021] The sensor 10 is disposed above the forming drum 6 and detects the presence or absence and position of the tire materials M1 and M2 supplied to the forming drum 6. As the sensor 10, various known non-contact type detection sensors can be used. In this embodiment, in order to comprehensively detect the entire range in the width direction of each of the tire materials M1 and M2, the sensors 10a and 10b are disposed at two locations spaced apart in the width direction (X direction). By moving each of the sensors 10a and 10b in the width direction, it is possible to accurately obtain width direction position data of the tire material M1 of any width dimension. If one sensor 10 can comprehensively detect the entire range in the width direction of each of the tire materials M1 and M2, the number of sensors 10 can be reduced to one. The detection data by the sensor 10 is inputted sequentially to the control unit 17. This detection data includes width direction position data of the tire materials M1 and M2 on the forming drum 6.

[0022] The control unit 17 performs calculation processing using input data, stored data, etc., and controls various components of the manufacturing apparatus 1. As the control unit 17, various known computers can be used.

[0023] The vertical movement mechanism 9 moves the upper structure 4 up and down relative to the base 3. As the vertical movement mechanism 9, various known mechanisms such as a fluid cylinder or a rod moved forward and backward by a servo motor can be used. In this embodiment, the vertical movement mechanism 9 is interposed between the base 3 and the mounting plate 5a.

[0024] Therefore, the upper structure 4 moves vertically as a unit by the vertical movement mechanism 9. In addition, various components directly and indirectly connected to the slide plate 5b move widthwise as a unit by the drum movement mechanism 7. That is, the forming drum body 6 and the sensor 10 move synchronously by the same amount in the widthwise direction by the drum movement mechanism 7.

[0025] In this embodiment, the slide plate 5b, the rotation drive unit 6a, the support pillar 14, the cross beam 14a, the support frame 15 and the sensor support beam 11 function as a connection unit that connects the forming drum body 6 and the sensor 10 and moves the sensor 10 in the width direction together with the forming drum body 6. For example, the support pillar 14 can be provided directly on the slide plate 5b instead of on the rotation drive unit 6a, so that the forming drum body 6 and the sensor 10 are indirectly connected to each other and the sensor 10 is moved in the width direction together with the forming drum body 6.

[0026] Next, an example of a procedure for manufacturing a cylindrical tire member M using this manufacturing apparatus 1 will be described.

[0027] In this embodiment, tire materials M1, M2 are supplied in a flat state to the building drum body 6 and wound thereon by a plurality of conveyors 16a, 16b arranged in parallel in the width direction relative to the building drum body 6. When each tire material M1, M2 is supplied, the building drum body 6 is moved and set near the tip end (winding positions P1, P2) of the conveyors 16a, 16b supplying the tire materials M1, M2.

[0028] First, as illustrated in Fig. 5 and Fig. 6, the forming drum body 6 is moved and set at a winding position P1 near the front end of the conveyor 16a that supplies the tire material M1 to the forming drum body 6. To this end, as illustrated in Fig. 5, the sliding movement mechanism 8 moves the drum unit 2 as a whole in the width direction to align it with the winding position P1 (X-direction position). Also, as illustrated in Fig. 6, the vertical movement mechanism 9 moves the upper structure 4 in the vertical direction to align it with the winding position P1 (Z-direction position). The winding position P1 is an appropriate position that allows the tire material M1 to be smoothly transferred from the conveyor 16a to the forming drum body 6.

[0029] The position (X-direction, Y-direction, and Z-direction positions) of the front end of the conveyor 16a is preset, and the Y-direction position of the forming drum body 6 is also preset. Therefore, a pre-test is conducted in which the tire material M1 is transferred from the conveyor 16a to the forming drum body 6 while varying the position (X-direction and Z-direction positions) of the forming drum body 6, and the winding position P1 is determined in advance. Similarly, the winding position P2 is determined for the other conveyor 16b.

[0030] By determining the winding position P1 in advance in this manner, when the tire material M1 is supplied to the forming drum body 6, the width direction position of the forming drum body 6 is adjusted using the slide movement mechanism 8, and the vertical position of the forming drum body 6 is adjusted using the vertical movement mechanism 9 to set the forming drum body 6 at the winding position P1. Specifically, to set the forming drum body 6 at the winding position P1, the slide movement mechanism 8 is controlled by the control unit 17 to adjust the width direction position of the forming drum body 6 based on the width direction position of the tip of the conveyor 16a that supplies the tire material M1. In addition, the vertical movement mechanism 9 is controlled by the control unit 17 to adjust the vertical position of the forming drum body 6 based on the vertical position of the tip of the conveyor 16a. By controlling in this manner, the forming drum body 6 can be automatically set at the winding position P1. In order to more quickly set up the forming drum body 6 at the winding position P1, it is advisable to move the forming drum body 6 (drum unit 2) in the width direction toward the winding position P1 using the slide movement mechanism 8 while moving the forming drum body 6 in the vertical direction using the vertical movement mechanism 9 to align it with the height position of the winding position P1.

[0031] The sensors 10 are moved in the width direction by the respective sensor slide mechanisms 12, and are moved up and down by the sensor lifting mechanism 13 to the detection position and fixed there. The detection position is an appropriate position where the sensor 10 can accurately detect the width direction positions of both ends of the tire material M1 on the forming drum body 6. This detection position varies depending on the arrangement of the conveyor 16a relative to the forming drum body 6 and the width direction size of the tire material M1. Therefore, the detection position is determined in advance by performing a pre-test to detect the tire material M1 on the forming drum body 6 by changing the position (X direction, Y direction, and Z direction position) of the sensor 10 in various ways. The detection positions are also determined in the same manner for the other conveyor 16b and the tire material M2. It is preferable to move the sensor 10 to the detection position while the forming drum body 6 (drum unit 2) is moved in the width direction toward the winding position P1 by the slide movement mechanism 8. This detection position is stored in the control unit 17.

[0032] Next, as illustrated in FIG. 7 and FIG. 8, the forming drum body 6 is rotated around the drum axis C at the winding position P1, and the tire material M1 supplied by the conveyor 16a is wound around it. The tire material M1 placed on the conveyor 16a meanders in the width direction to some extent. Therefore, the width direction position of the tire material M1 on the conveyor 16a is detected by known sensors, and the control unit 17 controls the drum movement mechanism 7 to move the forming drum body 6 in the width direction based on the detection data. In this way, the tire material M1 is wound around the forming drum body 6 while suppressing meandering and positioning it at the reference position Px in the width direction. This reference position Px can be set to any position. For example, the width direction center position of the forming drum body 6 is set in advance to the reference position Px, and the tire material M1 is wound around the forming drum body 6 to be formed into a cylindrical shape by positioning the width direction center position of the tire material M1 so as to coincide with the reference position Px.

[0033] Even if the tire material M1 is positioned in this way and wound around the building drum 6, it is unclear to what extent the widthwise center position of the actually wound tire material M1 coincides (misaligns) with the reference position Px. Therefore, in this embodiment, the control unit 17 calculates the widthwise position of the tire material M1 over its entire length with respect to the reference position Px of the building drum 6 based on widthwise installation position data of the sensor 10 with respect to the building drum 6 and widthwise position data of the tire material M1 on the building drum 6 detected by the sensor 10 which is sequentially input to the control unit 17.

[0034] More specifically, the widthwise center position (i.e., reference position Px) of the forming drum body 6 is calculated based on widthwise installation position data of the sensor 10 relative to the forming drum body 6. Furthermore, the control unit 17 sequentially calculates the widthwise center position over the entire length of the tire material M1 on the forming drum body 6 based on the widthwise position data of the tire material M1 successively detected by each of the sensors 10a, 10b between the start and end of winding the tire material M1 around the forming drum body 6. Then, the control unit 17 calculates the widthwise difference Dx between the calculated reference position Px and the calculated widthwise center position of the tire material M1 over the entire length of the tire material M1.

[0035] Here, since the sensor 10 and the forming drum 6 are connected and move together in the width direction, the data on the width direction installation position of the sensor 10 relative to the forming drum 6 remains unchanged regardless of whether the forming drum 6 moves in the width direction. Since the positions of the sensors 10 are stored in the control unit 17 and known, the width direction distance between each sensor 10 and the reference position Px of the forming drum 6 is also a known value. In other words, the reference position Px is accurately grasped based on the position of each sensor 10. Therefore, in order to calculate the difference Dx, it is sufficient to use the reference position Px accurately grasped based on the position of each sensor 10. That is, the above-mentioned difference Dx can be calculated as the difference between the calculation result of the width direction center position of the tire material M1 on the forming drum 6 over the entire length of the tire material M1 based on the width direction position data of the tire material M1 successively detected by the sensor 10 and the reference position Px accurately grasped based on the position of each sensor 10 stored in the control unit 17.

[0036] Therefore, this manufacturing apparatus 1 has a simple configuration in which the sensor 10 is connected to the forming drum 6 and the sensor 10 is moved in the width direction together with the forming drum 6, and yet is advantageous in accurately calculating the width direction position of the tire material M1 over the entire length relative to the reference position Px even when the forming drum 6 is frequently moved in the width direction. That is, since it is possible to accurately grasp the degree to which the width direction center position of the tire material M1 wound around the forming drum 6 coincides (misaligns) with the reference position Px in the width direction, it is possible to ensure the quality of the manufactured cylindrical tire component M. Moreover, since the sensors 10a and 10b sequentially detect the width direction position data of the tire material M1 from the start to the end of winding the tire material M1 around the forming drum 6, a separate process (time) for calculating the width direction position of the tire material M1 over the entire length relative to the reference position Px is not required.

[0037] Next, as illustrated in Figures 9 and 10, in order to manufacture a cylindrical tire component M from tire material M2 supplied from the other conveyor 16b, the forming drum body 6 is moved to a winding position P2 near the front end of the other conveyor 16b. The procedure for installing the forming drum body 6 at the winding position P2 is the same as the procedure for installing it at the winding position P1 described above. That is, as illustrated in Figure 9, the drum unit 2 is moved as a unit in the width direction by the sliding movement mechanism 8. Also, as illustrated in Figure 10, the upper structure part 4 is moved in the vertical direction by the vertical movement mechanism 9.

[0038] The procedure for moving and fixing the sensors 10a and 10b to the detection positions is the same as that performed at the winding position P1. That is, the sensors 10a and 10b are moved in the width direction by the sensor slide mechanism 12, raised and lowered by the sensor lift mechanism 13, and fixed to the detection positions according to the conveyor 16 and the tire material M2.

[0039] Next, in the same procedure as in the case of the tire material M1 described above, the forming drum body 6 is moved in the width direction by the drum moving mechanism 7, so that the tire material M2 is wound while being positioned at the reference position Px in the width direction of the forming drum body 6 while suppressing meandering. Since a cylindrical tire component M has already been manufactured and wound around the forming drum body 6, the tire material M2 is wound around the outer circumferential surface of this tire component M at the winding position P2. Therefore, at the winding position P2, the tire component M formed into a cylindrical shape by the tire material M2 is manufactured in a state of being stacked on the tire component M already manufactured on the forming drum body 6. Since the deviation in the width direction of each stacked tire component M1 is suppressed, a stack of tire components M with excellent quality is manufactured. Then, for the tire material M2, as in the case of the tire material M1, the difference Dx in the width direction between the reference position Px and the calculated center position in the width direction of the tire material M2 is calculated over the entire length of the tire material M2.

[0040] In this embodiment, the sensor 10 moves up and down at the inclination angle S, and this up and down movement allows the position of the sensor 10 in the height direction (Z direction) as well as the front-rear direction (Y direction) to be adjusted at the same time. Therefore, by appropriately setting the inclination angle S, it is advantageous to quickly move and fix the sensor 10 to a detection position corresponding to the arrangement of the conveyors 16a, 16b relative to the forming drum body 6.

[0041] In this embodiment, by moving the forming drum body 6 in the width direction at the winding positions P1, P2 by the drum moving mechanism 7, it is possible to wind the tire materials M1, M2 around the forming drum body 6 while correcting variations in the width direction positions. The drum moving mechanism 7 moves not the drum unit 2 but the components of the drum unit 2 installed on the slide plate 5 in the width direction, so that it is advantageous compared to the drum unit 2 in moving the forming drum body 6 to a desired width direction position quickly and frequently.

[0042] In FIG. 1, a conveyor 16a is disposed at one of two positions separated in the width direction, and a conveyor 16b is disposed at the other position, but the conveyors 16a and 16b disposed at each position are not limited to one, and may be disposed in a vertical arrangement of a plurality of conveyors (e.g., two to four conveyors). When a plurality of conveyors 16a are disposed in a vertical arrangement at one position, a plurality of tire materials M1 are sequentially and continuously supplied to the forming drum body 6 by each of the vertically arranged conveyors 16a, and each is formed into a cylindrical shape and stacked. As in the above-described embodiment, by moving the forming drum body 6 in the width direction relative to each of the conveyors 16a fixed at a predetermined position, the tire material M1 sequentially and continuously supplied is wound while being positioned at a reference position Px in the width direction of the forming drum body 6 with meandering suppressed. That is, when each of the multiple tire materials M1 supplied sequentially is centered and wound around the building drum body 6, the position of each of the conveyors 16a arranged in a vertical row is fixed, so that each tire material M1 can be continuously supplied to the building drum body 6 through each conveyor 16a.

[0043] On the other hand, in a system in which the forming drum 6 is fixed at a predetermined position and the conveyor 16a immediately before the forming drum 6 is moved in the width direction to center and wind each tire material M1 supplied sequentially on the forming drum 6, the tire material M1 cannot be transferred from the rear conveyor 16a to the conveyor 16a immediately before the forming drum 6 while the conveyor 16a immediately before the forming drum 6 is moving in the width direction. As a result, the supply of the tire material M1 to the forming drum 6 is delayed, and an extra waiting time occurs until the centering process by the immediately preceding conveyor 16a is completed. This leads to a decrease in productivity of the cylindrical tire member M. Therefore, as described above, in the method of winding the tire material M1 supplied successively and continuously while positioning it at the reference position Px in the width direction of the forming drum body 6 by moving the forming drum body 6 in the width direction relative to each conveyor 16a fixed at a predetermined position, unnecessary waiting time until each tire material M1 is supplied to the forming drum body 6 is suppressed, which is advantageous for improving the productivity of the cylindrical tire component M. The same applies when multiple conveyors 16b are vertically arranged at the other position, and the method of moving the forming drum body 6 in the width direction relative to the conveyors 16b fixed at a predetermined position and vertically arranged to center each of the multiple tire materials M2 supplied successively on the forming drum body 6 and winding it is advantageous for improving the productivity of the cylindrical tire component M.

[0044] In the embodiment, the leading ends of the conveyors 16a, 16b are set above the forming drum body 6, but they can also be set below. The leading end of one conveyor 16a can be set above the forming drum body 6, and the leading end of the other conveyor 16b can be set below the forming drum body 6. The number of conveyors 16a, 16b is not limited to two, and this manufacturing device 1 can also be applied to a single conveyor or a case where three or more conveyors are arranged in parallel. When there is one conveyor, there is no need to move the drum unit 2 as a unit in the width direction, so unnecessary components such as the slide movement mechanism 8 can be omitted.

[0045] The forming drum body 6 is not limited to various commonly known forming drums, and may be, for example, a so-called rigid core having an outer surface substantially the same as the inner surface of the tire T to be manufactured. [Explanation of symbols]

[0046] 1 Manufacturing equipment 2 Drum Unit 2a Guide rail 3 Base 4 Superstructure 5a Mounting plate 5b Slide plate 6. Forming drum body 6a Rotation drive unit 7 Drum movement mechanism 8 Slide movement mechanism 9. Up-down movement mechanism 10(10a, 10b) Sensor 11 Sensor support beam 12 Sensor slide mechanism 13 Sensor lifting mechanism 14 Posts 14a Crossbeam 15 Support Frame 16a, 16b Conveyor 17 Control Unit M1, M2 Strip of tire material M Tire parts

Claims

1. A manufacturing apparatus for cylindrical tire components, comprising: a conveyor for supplying a strip-shaped tire material in a flat state; a forming drum body on which the tire material supplied by the conveyor is wound and formed into a cylindrical shape; and a drum moving mechanism for moving the forming drum body in a drum width direction, a control unit to which data on the width direction position of the tire material on the forming drum detected by the sensor is sequentially input; and a connecting unit that connects the forming drum body and the sensor to move the sensor in the drum width direction together with the forming drum body, The tire material is wound on the forming drum body while suppressing meandering by moving the forming drum body in the drum width direction by the drum moving mechanism, The apparatus for manufacturing cylindrical tire components is configured so that the control unit calculates the width direction position of the tire material over the entire length relative to a reference position in the width direction of the forming drum body, based on width direction installation position data of the sensor relative to the forming drum body and the width direction position data sequentially input to the control unit.

2. 2. The manufacturing apparatus for a cylindrical tire member according to claim 1, further comprising a sensor slide mechanism for moving the sensor in the drum width direction, the sensor being moved to a desired position in the drum width direction by the sensor slide mechanism and fixed there.

3. 2. The manufacturing apparatus for a cylindrical tire member according to claim 1, wherein the sensors are disposed at two positions spaced apart in the width direction of the drum.

4. 3. The manufacturing apparatus for a cylindrical tire member according to claim 2, wherein the sensors are disposed at two positions spaced apart in the width direction of the drum.

5. The manufacturing apparatus for a cylindrical tire member according to any one of claims 1 to 4, further comprising a sensor lifting mechanism for lifting and lowering the sensor, and the sensor is set to a desired height position relative to the molding drum body by the sensor lifting mechanism.

6. A method for manufacturing a cylindrical tire component, in which a band-shaped tire material is supplied in a flat state by a conveyor and wound around a forming drum body to form a cylindrical tire, the forming drum body is moved in a drum width direction by a drum moving mechanism to suppress meandering and wind the tire material around the forming drum body, The forming drum body and the sensor are connected by a connecting portion, and the sensor is moved in the drum width direction together with the forming drum body by the drum moving mechanism, The width direction position data of the tire material on the building drum body detected by the sensor is sequentially input to a control unit, A manufacturing method for a cylindrical tire component, in which the control unit calculates the width direction position of the tire material over the entire length relative to a reference position in the width direction of the forming drum body, based on width direction installation position data of the sensor relative to the forming drum body and the width direction position data sequentially input to the control unit.

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