JP5474383B2 - Tire molding apparatus and tire molding method - Google Patents

Description

  The present invention relates to a tire molding apparatus and a tire molding method for manufacturing a tire by detecting an optimum rotation start position of a molding drum suitable for winding a tire constituent member wound around a molding drum.

Conventionally, in a green tire molding process for molding a green tire as a green tire, as shown in FIG. 11 and FIG. 12, different types of tire constituent members are used in a molding drum provided with a bladder 51c between drum bodies 51a and 51b. Is wound a plurality of times from a predetermined winding start position to form a layered body H of a cylindrical tire body, and then a bladder 51c of a molding drum is expanded in a radial direction as indicated by an arrow G to obtain a raw material before vulcanization. Mold the tire. That is, a layered body H obtained by winding tire constituent members one by one around a molding drum is subjected to bladder molding to obtain a molded tire.
For example, a carcass, a belt, a tread, or the like as a tire constituent member, which is a belt-like member formed in a width substantially the same as the width of the tire, is wound around the molding drum in a layered manner around the winding start position. A position shift is given to the winding start position of each tire constituent member for the purpose of flattening the tire surface, and winding is performed so as not to overlap.
However, as shown in FIG. 11 and FIG. 12, when a green tire is molded by inflating the bladder in the radial direction after winding the cylindrical layered body H, the bladder 51c depends on the characteristics of the bladder or individual differences. In order to prevent the layered body H from being pressed uniformly in the radial direction, the circumferential surface of the molded raw tire has a concave portion Z1 relative to a reference line (a circular line centered on the molding drum central axis h) Q. And the undulation due to the convex portion Z2 is generated, and the raw tire is shaken with respect to the rotation in the circumferential direction.
Therefore, a tire surface irregularity (waviness) detecting device is manually carried into the tire molding device from outside and deployed to examine the relationship between the bladder of the molding drum and the winding start position of the tire constituent member. The position where the body can be pressed uniformly is obtained from the detection result of the unevenness amount, and the most preferable winding start position of the tire constituent member is obtained, and this production is carried out.
Specifically, the position of the bladder where the green tire is molded and the winding start position of the tire component are manually changed relatively to obtain a prototype and detect the runout (swell) in the circumferential direction of the green tire. By examining with a device, the optimum winding start position for the bladder is obtained from the prototype. That is, it is adjusted by the above method so that the raw tire to be molded is produced by the main manufacturing at a position where the runout in the circumferential direction is minimized.
Patent Document 1 discloses an apparatus that performs alignment for aligning the center position in winding of the belt-shaped member.

JP-A-6-254990

However, it takes a lot of man-hours to bring in the unevenness (waviness) detection device to all the molding equipment and judge it with the waveform of unevenness with a small number of samplings (N number), and the measurement accuracy cannot be maintained. .
In addition, if the size of the tire to be molded is switched halfway after production starts, the bladder of the molding drum is replaced, so the runout in the circumferential direction of the raw tire (bladder molded tire) set at the start of production changes. Therefore, there is a possibility that the runout in the circumferential direction of the green tire to be molded cannot be guaranteed. In addition, even when the same size bladder is replaced, even if the winding start position is the same, there are individual differences such as the bladder thickness being partially different between the bladder after replacement and the bladder before replacement, When the diameter of the bladder is increased, the diameter may not be increased in the same way as before replacement, and the circumferential runout may be affected.

  Therefore, in the present invention, in order to solve the above-described problems, the rotation start positions B of a plurality of molding drums are set, and the amount of unevenness on the surface of the bladder molded tire obtained for each rotation start position B is detected, which is preferable for the present manufacturing. Provided are a tire molding apparatus and a tire molding method for detecting an angle.

As a first aspect of the present invention, a molding drum that forms a layered body by winding a tire constituent member from a winding start position A set on the molding drum, and is positioned at the center of the molding drum, after winding and a bladder which is caused by bladder molding expanding the center side of the layered body, the building drum is rotated by winding the tire components from the winding start position a, and the bladder is inflated after forming the layered body A tire molding apparatus for obtaining a bladder-molded tire by molding a bladder , wherein a plurality of rotation start positions B provided along a rotation direction of the molding drum are rotated with the winding start position A a rotation angle setting means for matching each winding the tire component for each match and one one winding start position a of the plurality of rotational start position B And uneven amount detecting means for detecting the amount of unevenness of the surface of the plurality of bladders molded tire to be molded by winding the joining start position A, the amount of irregularities before Symbol irregularity detected by the detecting means a plurality of bladders molded tire surface Among them, a measurement control means for extracting the rotation start position B when the bladder-molded tire with the smallest unevenness is molded, and after the extraction of the rotation start position B with the smallest unevenness, The rotation start position B and the winding start position A are made coincident, the molding drum is rotated to wind the tire constituent member from the winding start position A, and after forming a layered body, the bladder is inflated, and bladder molding is performed It was configured to obtain a tire.
According to the present invention, it is possible to automatically obtain a prototype and obtain a preferable rotation start position, so that it is not necessary to manually measure the amount of unevenness on the surface of the bladder-molded tire. It becomes accurate and the quality of the unevenness of the bladder-molded tire manufactured as the tire of the product before vulcanization is controlled.
The second aspect of the present invention includes a molding drum that forms a layered body by winding a tire constituent member from a winding start position A set on the molding drum, and is positioned at the center of the molding drum. a central side of the layered body is expanded after a bladder for bladder molding, expanding the bladder to the tire component member by rotating the building drum winding from the winding start position a, after forming the layered body A bladder molding tire for obtaining a bladder-molded tire , wherein a bladder detection sensor for detecting replacement of the bladder and a signal from the bladder detection sensor along a rotation direction of the molding drum Rotation angle setting means for rotating a plurality of rotation start positions B provided to coincide with the winding start position A by rotating the molding drum , Irregularity of one and one winding start position A and a plurality of bladders molded tire surface to be molded the tire component for each match by winding the winding start position A of the plurality of rotational start position B and uneven amount detecting means for detecting, out of the amount of irregularities before Symbol irregularity detected by the detecting means a plurality of bladders molded tire surface, the rotation start position when the bladder molded tire uneven amount becomes minimum is molded A measurement control means for extracting B, and after extracting the rotation start position B at which the unevenness amount is minimized, the rotation start position B after the extraction is matched with the winding start position A, and the molding drum is It is rotated, the said tire structural member is wound from winding start position A, and after forming a layered body, the above-mentioned bladder is expanded and a bladder fabrication tire is obtained.
According to the present invention, each time the bladder is changed due to the size change of the tire to be molded by the bladder or the bladder is replaced due to the life, the bladder detection sensor always detects the replacement of the bladder and the rotation of the bladder molding is detected by the unevenness detecting means. Since the production is started after the optimum angle of the start position B is detected, it is possible to guarantee the runout in the circumferential direction of the bladder-molded tire before and after the bladder replacement.

As a third invention of the present invention, the unevenness detecting means is constituted by a laser displacement meter.
According to the present invention, the amount of unevenness is detected by a laser displacement meter in a non-contact manner. For example, if a two-dimensional laser displacement meter is used, the measurement in the width direction of the tire can be performed at one time. A large number of man-hours for measuring unevenness at a plurality of locations are not required, and it is possible to prevent the measurement accuracy from being maintained, such as judging unevenness from the small waveform, and to improve the measurement accuracy.

As a fourth invention of the present invention, since a plurality of rotation start positions B are provided at equal angles , the rotation start position B can be obtained with simple settings, and the configuration is simplified.

As the fifth invention of the present invention, since the rotation start position B of the molding drum is provided every 90 degrees , the configuration is simplified by setting the minimum rotation start value B.

As a sixth aspect of the present invention, a tire component is wound from a winding start position A set on a molding drum to form a layered body, and a bladder located in the center of the molding drum is used to form a center side of the layered body. Is a tire molding method for obtaining a bladder molded tire by expanding a bladder to form a bladder, and then rotating the molding drum to wind the tire constituent member from a winding start position A to form a layered body and then expanding the bladder. Then , the rotation angle setting means for rotating the molding drum causes a plurality of rotation start positions B provided along the rotation direction of the molding drum to coincide with the winding start position A, respectively, and starts the plurality of rotations. Each time the tire constituent members are wound from the winding start position A each time the position B is matched with the winding start position A, a plurality of moldings are formed. Detected by the irregularity detection means for detecting the amount of unevenness of the surface of the bladder molded tire, from the plurality of rotation start position B, the uneven amount of the irregularity is detected by the detection means a plurality of bladders molded tire surface Among them, the extraction is performed by the measurement control means for extracting the rotation start position B when the bladder molded tire having the smallest unevenness is molded, and the rotation start position B by which the unevenness is minimized by the measurement control means is extracted. The rotation start position B after extraction and the winding start position A are made to coincide, the molding drum is rotated to wind the tire constituent member from the winding start position A, and the bladder is formed after forming the layered body. It was inflated to obtain a bladder molded tire.
According to the present invention, it is not necessary to manually measure the amount of unevenness on the surface of the bladder-molded tire, and a suitable rotation start position B angle can be automatically detected. Monitoring is not necessary, and manpower can be omitted.
Further, before the actual production, the angle of the rotation start position B at which the unevenness of the surface of the molded tire molded by the bladder is minimized is detected, and the angle of the rotation start position B is shifted from the winding start position A. Since the layered body can be formed and bladder molding can be performed, the quality of the irregularity of the bladder molded tire manufactured in this way is controlled.

1 is a schematic diagram of a molding apparatus according to Embodiment 1. FIG. 1 is a side view of a molding apparatus according to Embodiment 1. FIG. FIG. 3 is a block diagram of control means according to the first embodiment. FIG. 5 is a correspondence diagram of a rotation start position and a winding start position according to the first embodiment. FIG. 3 is a conceptual diagram of measurement of the bladder molded tire according to the first embodiment. FIG. 3 is a conceptual diagram of measurement of the bladder molded tire according to the first embodiment. FIG. 3 is a diagram of unevenness detection by the control unit according to the first embodiment. FIG. 9 is a diagram of detecting the amount of unevenness by the control unit according to the second embodiment. FIG. 10 is a block diagram of control means according to the third embodiment. FIG. 10 is a diagram illustrating detection of unevenness by the control unit according to the third embodiment. The conventional bladder molding conceptual diagram. The figure which shows the bladder molding tire shape | molded by the conventional bladder molding.

1 and 2 are schematic configuration diagrams showing an embodiment of a tire molding apparatus 50 of the present invention.
In FIG. 1, a tire molding apparatus 50 as an example of molding a raw tire is disposed at a conveyance end of a conveyance line in a longitudinal direction of a conveyance unit 9 that conveys a belt-shaped tire constituent member 10. That is, it is installed at the conveyance end so that the rotation shaft 52 of the molding drum 51 of the tire molding device 50 is orthogonal to the conveyance direction of the tire constituent member 10.

The tire constituent member 10 is composed of a carcass, a belt, a tread, etc., each having a predetermined width and a predetermined length, and is wound around the outer periphery of the molding drum 51 in multiple layers to form a cylindrical layered body V (FIG. 5). (See FIG. 6).
A molding apparatus 50 that performs winding molding of the tire constituent member 10 is roughly configured by a drum base 56, a molding drum 51, support legs 55, and a drum rotation mechanism 60.
The drum base 56 is a pedestal having a mounting surface formed in a flat shape and having a surface covered with metal, such as a surface plate. The mounting surface of the drum base 56 is provided with a molding drum 51 and a drum rotating mechanism 60 for winding the tire constituent member 10.
The two support legs 55 and 55 are erected in the vertical direction with respect to the mounting surface of the drum base 56 so as to face each other. The lower end 55 a of the support legs 55, 55 is fixed to the mounting surface, and the upper end 55 b side includes a mechanism that supports the rotating shaft 52 of the molding drum 51.
The molding drum 51 includes a pair of left and right drum bodies 51a and 51b and a central bladder 51c, and is pivotally supported by a rotary shaft 52 positioned between the support legs 55 and 55.
The pair of drum bodies 51a and 51b are formed to be equally divided on the left and right sides so as to have a predetermined space substantially at the center in the width direction of the molding drum 51.
The bladder 51c is provided so as to connect a central space between the divided drum bodies 51a and 51b.
The rotary shaft 52 is supported by one support leg 55 so that one end 52 a of the rotary shaft 52 is supported, and the other support leg 55 is supported so that the other end 52 b of the rotary shaft 52 protrudes from the support leg 55. A drum pulley 54 is attached to the end 52 b protruding from the other support leg 55.

The drum rotation mechanism 60 is generally constituted by a rotation motor 61, a motor pulley 62, and a belt 63.
The rotation motor 61 is fixed so that the output shaft 61 a is parallel to the rotation shaft 52 of the molding drum 51. Further, a motor pulley 62 is attached to the output shaft 61a, and the drum pulley 56 and the motor pulley 62 are attached to the drum base 56 so as to be in a straight line, and the belt 63 is stretched over.
With the above configuration, when the rotary motor 61 rotates under the control of the control means C described later, the molding drum 51 is rotated via the belt 63 and the tire constituent members 10 are sequentially wound and molded from the bottom layer one by one. Is done.
The rotation of the rotary motor 61 is controlled by a control device C, which will be described later. In the control device C, a plurality of rotation start positions B of a molding drum 51, which will be described later, are positioned at the winding start positions A of the tire constituent member 10 (the molding drum 51). To match the uppermost part of Accordingly, the winding of the tip of the tire constituent member 10 is always started from the predetermined winding start position A of the molding drum 51.

E is an unevenness detecting means attached to the lateral frame 27 and facing the surface of the bladder molded tire on the side of the bladder 51c. C is a control means having a measurement control means Cc, a rotation angle setting means Cd, and a main production control means Ce. Is a bladder detection sensor attached to the vertical frame 26.
In this apparatus, as shown in FIGS. 3 and 4 (a) to 4 (d), the tip of each sheet-like tire constituent member 10 (the tip of the lowermost member in this example) 10 m is wound around the molding drum 51. When the starting position A is reached, the molding drum 51 starts rotating, and a plurality of the tire constituent members 10 are wound sequentially for each rotation, and by this winding, the layered body V ( 5 and 6) are formed.
Here, the rotation start position B of the molding drum 51 is an arbitrary position, but in this example, as shown in FIG. 4A, the surface of the molding drum is divided into equal angles (90 degrees in this example). Four patterns of angle patterns P1 to P4 to be described later are set as winding start positions indicating a plurality of parts.
As shown in FIGS. 4A to 4D, the angle patterns P1 to P4 as the rotation start position B are sequentially positioned so as to correspond to the winding start position A, and the molding drum rotates from each as a starting point. Is controlled by the control device C so as to start.
That is, as shown in FIGS. 4A, 4B, 4C, and 4D, the forming drum 51 is rotated with the angle patterns P1 to P4 as the starting points, and winding starts individually, layered body formation, Since it is controlled to perform bladder molding, each of the patterns P1 to P4 is wound around, and four bladder molded tires are prototyped by bladder molding, and unevenness of the surface of the bladder molded tire of these four prototypes is performed. The amount is detected by the unevenness detecting means E.
In this example, the winding start position A is fixedly set at the uppermost part of the molding drum 51. In the unevenness detecting means E, the molding drum is started to rotate for each of the angle patterns P1 to P4, and each time a prototype is obtained by bulging (inflating) molding by the bladder 51c from winding, tire molding is performed. The molded tire is rotated by the device 50, and the unevenness amount F (waviness in the circumferential direction of the tire surface) of the surface of each molded tire is detected by the unevenness detection means E on the tire molding device 50. In this case, the deformation of the tire is measured by, for example, a laser displacement meter, and the amount of unevenness F is detected by rotating the shaping drum while the laser displacement meter reflects the reflected light that is irradiated from the laser displacement meter and reflected from the surface of the bladder molded tire. This is done by receiving light.

In FIG. 3, the bladder detection sensor Ca detects when a new bladder 51c is exchanged and set on the molding drum 51. The measurement control means uses a signal Cb from the bladder detection sensor Ca as a start signal. C is configured to be driven.
Further, the control means C includes a main production control means Ce for controlling the rotation of the molding drum 51 based on the best angle pattern selected from the angle patterns P1 to P4 among the measurement results obtained by the measurement control means Cc.
The production control means Ce, when producing a tire that is actually a product (when producing the actual product), matches the rotation start position B and the winding start position A of the best angle pattern, and then the lowest layer The rotation of the molding drum 51 is controlled so as to start the winding of the tire constituent member located at.

  The measurement control means Cc has a rotation angle setting means Cd. The rotation angle setting means Cd sets four angle patterns P1 to P4 as shown in FIGS. 4 (a) to 4 (d). Then, the molding drum is controlled so that the rotation start position B and the winding start position A sequentially coincide with each other.

  Therefore, in each of the patterns P1 to P4, the tip 10m of the lowermost tire constituent member 10 is set at the winding start position A, and the layered body V (see FIG. 6) is formed by winding (see FIG. 4). A bladder-molded tire is formed by bulging molding by driving a bladder (see FIGS. 5 and 6). Every time a bladder molded tire is formed, the unevenness amount detection means E described later detects the unevenness amount F.

  The measurement mode by the measurement control means Cc before the manufacture of the prototype tire will be described. Before the tire constituent member 10 is wound around the molding drum 51 in a layered manner, the angle pattern P1 ( 0 degree), angle pattern P2 (90 degrees), angle pattern P3 (180 degrees), angle pattern P4 (270 degrees), and the angle patterns P1 to P4 divided by 90 degrees are wound and winding start position A The molding drum 51 starts rotating from this position as a starting point, and a layered tire constituent member (layered body V) is formed and bladder molding is performed. Each time the bladder molding is completed, the unevenness amount F of the molded tire surface H is detected by the unevenness amount detection means E shown in FIGS. 5 and 6, and the minimum detection result of the unevenness amount F is sent to the measurement control means Cc. Is done.

  In the measurement control means Cc, one of the angle patterns P1 to P4 with which the unevenness amount F is minimized is extracted. The measurement control means Cc drives the production control means Ce after the measurement of the four angle patterns P1 to P4. The main production control means Ce is configured to set the rotation start position B of the molding drum based on one of the patterns P1 to P4 having the smallest unevenness F and perform the main production of tire molding. In FIG. 1, W is a position detection sensor for detecting the rotational position of the molding drum 51, and the control means C detects the signal of the position detection sensor W and sets the position of the molding drum 51 to a desired position. To do.

In the above configuration, the operation will be described below. First, when a new bladder 51c is set on the molding drum 51, the control means C is driven using the signal Cb from the bladder detection sensor Ca as a start signal.
The control means C makes the tip 10m of the lowermost tire component member 10 forming the layered body V of the first tire molded article coincide with the winding start position A as shown in FIG. At this time, the rotation angle setting means Cd controls the angle pattern P1 to coincide with the winding start position A, and the molding drum 51 starts to rotate with the pattern P1 as a starting point. Thus, a plurality of tire constituent members 10 are wound in layers from the first layer, the layered body V is completed, bladder molded, and the first tire molded product is obtained through a series of processes until bladder molding is completed. Next, the molding drum 51 is rotated, and the unevenness amount detecting means E detects the unevenness amount F as shown in FIGS.
Next, as shown in FIG. 4 (b), the rotation angle setting means Cd controls the angle pattern P2 to coincide with the winding start position A, and the tire constituent member 10 is moved to the lowermost layer under the control of the control means C. From the start of winding, the formation of the layered body V, the bladder molding, and the end of the bladder molding, when the second tire molded product is obtained, the irregularity amount detection means E detects the irregularity amount F.
Next, as shown in FIG. 4 (c), the rotation angle setting means Cd controls the angle pattern P3 so as to coincide with the winding start position A, and the tire constituent member 10 is moved to the lowermost layer under the control of the control means C. From the start of winding, the formation of the layered body V, the bladder molding, and the end of the bladder molding, when the third tire molded product is obtained, the irregularity amount detection means E detects the irregularity amount F.
Next, as shown in FIG. 4 (d), the rotation angle setting means Cd controls the angle pattern P4 so as to coincide with the winding start position A, and the tire constituent member 10 is moved to the lowermost layer under the control of the control means C. From the start of winding, the formation of the layered body V, the formation of the bladder, and the end of the bladder molding, when the fourth tire molding is obtained, the unevenness amount detection means E detects the unevenness amount F.
As described above, in the measurement mode by the measurement control means Cc, the tire constituent member is set on the molding drum to form the layered body V, but the rotation angle setting means Cd immediately before the winding start position of the uppermost part. Rotation start position B is set to 0, 90, 180, 270 degrees and four advance angle patterns P1 to P4 with respect to A, and four molded products for each pattern of measurement control means Cc As a result, each time the molded product is completed, the unevenness amount detection means E detects the unevenness amount F (F1, F2, F3, F4) of the molded tire surface H (see FIG. 7).

Each detection result is sent to the measurement control means Cc and comprehensively compared. The measurement control means Cc detects the unevenness amount F2 that minimizes the unevenness amount F, and in this example, the angle pattern P2 is extracted. After the measurement pattern (prototype) of the four patterns P1 to P4 is finished, the production control means Ce is driven.
This production control means Ce sets the rotation start position B of the molding drum to be the winding start position A on the basis of the angle pattern P2 in which the unevenness amount F indicates the minimum unevenness amount F2. The main production of molding is performed. In this production control means Ce, the rotation start position B is always set as the angle pattern P2 with respect to the winding start position A, and by sequentially starting the winding of the multilayer of tire constituent members, the bladder molding, and the bladder molding end operation. Molding of this manufacturing is performed.
That is, the angle of the angle pattern P2 (90 degrees) of the rotation start position B corresponding to the unevenness amount F2 that minimizes the unevenness amount F on the tire surface is extracted and set by the measurement control means Cc. Tire molding is performed starting from 90 degrees.

  As described above, after the bladder 51c is changed to a new one, the bladder 51c is consumed through the measurement mode and the main manufacturing mode and needs to be replaced with a new one. Then, the signal Cb is output to the control means C, and again through the measurement mode, the angle of the optimum rotation start position B (any one of the angle patterns P1 to P4) is extracted and rotated to this extracted angle. The start position B is set and the production is performed again.

In the present embodiment, the winding start position A does not move the joint position J (see FIG. 6) to the tip of the rear end of the tire constituent member 10 when the position is a fixed position. Can be maintained.
In the present embodiment, when the bladder 51c is replaced, the measurement control means Cc of the control means C automatically operates by the signal Cb of the bladder detection sensor Ca, and the angular positions of the layered bodies V of the tire constituent members 10 are different one by one. Winding and molding at the rotation start position B, performing bladder molding, detecting the unevenness F (Z1 + Z2 in FIG. 12) on the surface of each molded tire, and automatically detecting a suitable angle of the rotation start position B Therefore, monitoring such as attendance for measurement becomes unnecessary, and manpower can be omitted.

  In this embodiment, the rotation start position B is set to angles (0 degrees, 90 degrees, 180 degrees, and 270 degrees) of four patterns (P1 to P4) divided every 90 degrees, which are four divisions of 360 degrees. In the above description, the tire is formed and measured by the tire constituent member 10, and the angle may be set to three or less or five or more. That is, 360 degrees / n (n = 2, 3, 4,...) May be set.

Further, as shown in FIG. 8, for example, when the angle pattern P2 in which the unevenness amount F is the minimum value F2 is detected, the rotation start position B is further set to the advance angle γ and the receding angle in the vicinity of the angle pattern P2. Trial manufacture of the tire is performed at each angle of the patterns P21 and P22 shifted by the same amount by the angle β, the unevenness amount F is detected, and the detected unevenness amount F of the advance angle γ or the receding angle β is the unevenness amount. When the unevenness amount F21 smaller than F2 is detected, the rotation start position B may be set to the angle at the unevenness amount F21 to perform the main production control.
Thereby, the angle of the rotation start position B (either γ or β) based on the smaller unevenness F21 is obtained.

Embodiment 2
The detection amount F detected by the unevenness amount detection means E has been described as extracting the minimum value by comparing the detected unevenness amounts F1 to F4 in the patterns P1 to P4. 10, threshold level setting means Cm is provided, and the threshold signal Cs from the threshold level setting means Cm is compared with the signals of the unevenness amounts F1 to F4, and as shown in FIG. Any one of the angle patterns P1 to P4 (pattern P2 in this example) where the amount F2 falls below the threshold defined by Cs may be detected, and the process may be shifted to the main production.

  According to this, for example, when it is detected in the angle pattern P2 that the unevenness amount F2 is below the threshold, the trial production and measurement in the subsequent angle patterns P3 and P4 can be stopped and the process can be immediately started. Thus, improvement in tire mass productivity can be achieved.

Further, the measurement may be performed by mixing the measurement by fine adjustment according to the first embodiment and the comparison measurement based on the threshold level according to the second embodiment.
When any of the angle patterns P1 to P4 that are appropriate to be transferred to the main manufacturing is detected, the detection operation of the unevenness F is not necessary because the main angle shifts to the main manufacturing with the detected angle pattern. As a sampling inspection during the actual manufacturing, the inspection process of the unevenness amount F may be performed every predetermined time by setting a timer or the like, so that the product management of the tire product may be performed.

9 Conveying means, 10 tire constituent members, 50 tire molding device, 51 molding drum,
51c bladder, 60 drum rotation mechanism, A winding start position,
B rotation start position, C control means, Ca bladder detection sensor, Cb signal,
Cc measurement control means, Cd rotation angle setting means, Ce main production control means,
Cm threshold setting means, Cs threshold signal,
E unevenness detection means, F unevenness, P1 angle pattern, P2 angle pattern,
P3 angle pattern, P4 angle pattern, F unevenness amount, V layered body.

Claims (6)

A molding drum that forms a layered body by winding a tire constituent member from a winding start position A set on the molding drum;
It is located in the center of the molding drum, and includes a bladder that performs bladder molding by expanding the center side of the layered body after winding.
A tire molding device for rotating the molding drum to wind the tire constituent member from a winding start position A, forming a layered body and then expanding the bladder to perform bladder molding, thereby obtaining a bladder molded tire ,
Rotation angle setting means for rotating a plurality of rotation start positions B provided along the rotation direction of the molding drum to coincide with the winding start position A by rotating the molding drum ,
The amount of unevenness on the surface of a plurality of bladder molded tires formed by winding the tire constituent member from the winding start position A every time the rotation start position B is matched with the winding start position A. Unevenness detecting means for detecting,
Of irregularity amount before Symbol irregularity detected by the detecting means a plurality of bladders molded tire surface, and a measurement control means for bladder molding tire uneven amount is minimized to extract rotation start position B when molded Prepared,
After extraction of the rotation start position B at which the unevenness amount is minimized, the rotation start position B after the extraction coincides with the winding start position A, and the molding drum is rotated to start winding the tire constituent member. A tire molding apparatus characterized in that a bladder molded tire is obtained by winding the bladder from position A to form a layered body and then expanding the bladder. A molding drum that forms a layered body by winding a tire constituent member from a winding start position A set on the molding drum;
It is located in the center of the molding drum, and includes a bladder that performs bladder molding by expanding the center side of the layered body after winding.
A tire molding device for rotating the molding drum to wind the tire constituent member from a winding start position A, forming a layered body and then expanding the bladder to perform bladder molding, thereby obtaining a bladder molded tire ,
A bladder detection sensor for detecting the replacement of the bladder;
Based on a signal from the bladder detection sensor, a plurality of rotation start positions B provided along the rotation direction of the molding drum are rotated to match the winding start position A by rotating the molding drum. Setting means ;
The amount of unevenness on the surface of a plurality of bladder molded tires formed by winding the tire constituent member from the winding start position A every time the rotation start position B is matched with the winding start position A. Unevenness detecting means for detecting,
Of irregularity amount before Symbol irregularity detected by the detecting means a plurality of bladders molded tire surface, and a measurement control means for bladder molding tire uneven amount is minimized to extract rotation start position B when molded Prepared,
After extraction of the rotation start position B at which the unevenness amount is minimized, the rotation start position B after the extraction coincides with the winding start position A, and the molding drum is rotated to start winding the tire constituent member. A tire molding apparatus characterized in that a bladder molded tire is obtained by winding the bladder from position A to form a layered body and then expanding the bladder.   The tire molding apparatus according to claim 1 or 2, wherein the unevenness detecting means includes a laser displacement meter.   The tire molding device according to any one of claims 1 to 3, wherein the plurality of rotation start positions B are provided at equal angles.   The tire molding device according to any one of claims 1 to 4, wherein a rotation start position B of the molding drum is provided every 90 degrees. The tire component is wound from the winding start position A set on the molding drum to form a layered body,
The bladder is formed by expanding the center side of the layered body by a bladder located in the center of the molding drum,
A tire molding method for obtaining a bladder molded tire by rotating the molding drum and winding the tire constituent member from a winding start position A to form a layered body and then expanding the bladder .
A plurality of rotation start positions B provided along the rotation direction of the molding drum are made to coincide with the winding start position A by a rotation angle setting means for rotating the molding drum,
The amount of unevenness on the surface of a plurality of bladder molded tires formed by winding the tire constituent member from the winding start position A every time the rotation start position B is matched with the winding start position A. Detected by the unevenness detection means to detect,
Of the plurality of rotation start positions B, the rotation start when the bladder molded tire having the smallest unevenness among the uneven amounts on the surface of the plurality of bladder molded tires detected by the unevenness detecting means is molded. Extracted by measurement control means for extracting position B,
After the extraction of the rotation start position B where the unevenness amount is minimized by the measurement control means, the rotation start position B after the extraction coincides with the winding start position A, the molding drum is rotated, and the tire configuration A tire molding method comprising: winding a member from a winding start position A to form a layered body, and then expanding the bladder to obtain a bladder molded tire.

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