Abstract: Provided is a tire defect detection method capable of accurately detecting a thinly extending convex defect of a tire surface. Prior to the start of Step S1, two-dimensional images including a slit light image are successively obtained in advance. In Step S1, a slit light image is extracted from data of a plurality of shot two-dimensional images. In Step S2, an eccentricity component which is deviation resulting from eccentricity is eliminated from the extracted slit light image. In Step S3, a feature quantity is calculated based on the light image from which the eccentricity component is eliminated, and in Step S4, a thinly extending convex defect is detected based on the calculated feature quantity.

Abstract: Disclosed are an illumination device and an inspection device of a tire that can easily detect abnormality of the shape of the manufactured tire. A photographing portion 18,19 photographs a inner peripheral surface of a tire T, while a driving portion 12 relatively rotates the tire T and a inspection portion 20 around an axis of the tire T, in the state of irradiating a light from a light source unit 36 disposed along the inner peripheral surface of the tire T toward the circumferential direction of the tire T.

Abstract: The invention is for enabling one piece of rotation driving means 17 to drive to rotate both of an outer side shaft portion 3 of a drum shaft 1 and a screw shaft 4 on an inner side as a driving apparatus 10 of a tire building drum D, including an outer shaft 13 connected to the outer side shaft portion 3, a middle shaft 14 connected to the screw shaft 4, one piece of the rotation driving means 17 connected to the middle shaft 14 by way of a rotation transmitting member 18, and a clutch 26 interposed between the rotation transmitting member 18 connected to the middle shaft 14 and the outer shaft 13, and constituted to transmit rotation of the rotation driving means 17 to both of the middle shaft 14 and the outer shaft 13 in connecting the clutch 26 and transmit the rotation of the rotation driving means 17 only to the middle shaft 14 in cutting the clutch 26.

Abstract: Provided is a tire defect detection method capable of accurately detecting a thinly extending convex defect of a tire surface. Prior to the start of Step S1, two-dimensional images including a slit light image are successively obtained in advance. In Step S1, a slit light image is extracted from data of a plurality of shot two-dimensional images. In Step S2, an eccentricity component which is deviation resulting from eccentricity is eliminated from the extracted slit light image. In Step S3, a feature quantity is calculated based on the light image from which the eccentricity component is eliminated, and in Step S4, a thinly extending convex defect is detected based on the calculated feature quantity.

Abstract: A tire building method and a tire building facility according to the invention attains reduction of an installation space of the tire building facility and substantially equal building cycles for respective building stages to increase building efficiency and facilitate arrangement switching. For attaining these, a step for building a cylindrical carcass band, a subsequent step for building a cylindrical green case, a step for building a cylindrical belt and tread band, a step for combining the green case and the belt and tread band to build the final shape are divided as first through fourth building stages (S1) through (S4) having individual building drums (D1) through (D4) corresponding to the respective steps.

Abstract: The invention can firmly and easily remove a finely divided weft piece without leaving the weft piece by constituting a method and an apparatus of removing weft from a cord fabric for a topping sheet in a calender line for topping rubber on a number of pieces of aligned cords by a calender roll. In the midst of transferring a cord fabric transferred to a calender apparatus, weft is finely divided by passing the cord fabric through weft dividing means, thereafter, a plurality of blades arranged movably in a width direction on an upper face side of the cord fabric are reciprocally moved in the width direction over an entire width thereof to be brought into contact with the cord fabric, and the divided weft piece is wiped off to remove by respectively striking respective cords of the cord fabric by the respective blades.

Abstract: The invention can perform building in a process for building a carcass band or a belt/tread band of a tire, in which two drum transfer support bases (10) supporting building drums (D1) are alternately shifted to first and second transfer sections (11), (12), in which predetermined building positions are set, and a rotational transfer device (A) for rotational transfer of the drum transfer support bases (10) is mounted between the first transfer section (11) and the second transfer section (12).

Abstract: The invention can perform building in a process for building a carcass band or a belt/tread band of a tire, in which two drum transfer support bases (10) supporting building drums (D1) are alternately shifted to first and second transfer sections (11), (12), in which predetermined building positions are set, a rotational transfer device (A) for rotational transfer of the drum transfer support bases (10) is mounted between the first transfer section (11) and the second transfer section (12), which are arranged to get out of position relative to and in parallel to each other, and two pairs of rotational transfer rails (27a), (28a) are juxtaposed on a rotating table (20), which has an axis (O) intermediate between the both transfer sections, to be positioned corresponding to extensions of travel rails (11a), (12a) arranged on the first and second transfer sections (11), (12) to receive two drum transfer support bases (10), (10), which enter from portions of the rails (11a), (12a) of the both transfer sections (1

Abstract: Disclosed are an illumination device and an inspection device of a tire that can easily detect abnormality of the shape of the manufactured tire. A photographing portion 18,19 photographs a inner peripheral surface of a tire T, while a driving portion 12 relatively rotates the tire T and a inspection portion 20 around an axis of the tire T, in the state of irradiating a light from a light source unit 36 disposed along the inner peripheral surface of the tire T toward the circumferential direction of the tire T.

Abstract: There is provided a belt member producing method including forming a strip piece 17 of a predetermined width W by cutting a strip material 12 including a plurality of reinforcement cords 11 to a regular size, conveying the strip piece 17 to a transfer conveyor 22 in such a manner that cut sides 19 of the strip piece 17 are in parallel with a traveling direction B of the transfer conveyor 22 and overlapping continuously an integral number Nint of strip pieces 17 on each other on the transfer conveyor 22 in such a manner that the strip pieces 17 are overlapped on each other by an overlapping amount P along non-cut sides 18 thereof, so as to produce a belt member 30 having a desired length equal to a predetermined length L of a belt layer of a pneumatic radial tire, the belt member producing method being characterized by including selecting a desired cutting angle ?pre relative to a traveling direction A of the strip material 17 when the strip material 12 is cut to the regular size, calculating a number Ncal of

Abstract: The invention provides a driving apparatus for a tire building drum which can reduce load when the drum is rotating, which enables stable expanding and contracting operations and in which a center shaft portion (2) of the building drum (D) is made up of a cylindrical outer shaft (3) and an inner threaded shaft (4), the driving apparatus including a cylindrical outer shaft (13) which is coupled to the outer shaft (3), an inner shaft (14) coupled to the threaded shaft (4), a first motor (15) which is a rotational driving means coupled to the outer shaft (13) for rotating the drum, and a second motor (20) which is a rotational driving means coupled to the inner shaft (14) via a clutch (21) in such a manner as to be engaged with and disengaged from the inner shaft for expanding or contracting the drum, wherein by switching the clutch (21), when the drum is rotating, the second motor (20) is held out of engagement with the inner shaft (14), while when the drum is expanded or contracted, the second motor (20) is he

Abstract: The invention can firmly and easily remove a finely divided weft piece without leaving the weft piece by constituting a method and an apparatus of removing weft from a cord fabric for a topping sheet in a calender line for topping rubber on a number of pieces of aligned cords by a calender roll. In the midst of transferring a cord fabric (F) transferred to a calender apparatus, weft is finely divided by passing the cord fabric (F) through weft dividing means, thereafter, a plurality of blades (45) arranged movably in a width direction on an upper face side of the cord fabric (F) are reciprocally moved in the width direction over an entire width thereof to be brought into contact with the cord fabric (F), and the divided weft piece (W1) is wiped off to remove by respectively striking respective cords (C) of the cord fabric (F) by the respective blades (45).

Abstract: The invention can perform building in a process for building a carcass band or a belt/tread band of a tire, in which two drum transfer support bases (10) supporting building drums (D1) are alternately shifted to first and second transfer sections (11), (12), in which predetermined building positions are set, a rotational transfer device (A) for rotational transfer of the drum transfer support bases (10) is mounted between the first transfer section (11) and the second transfer section (12), which are arranged to get Out of position relative to and in parallel to each other, and two pairs of rotational transfer rails (27a), (28a) are juxtaposed on a rotating table (20), which has an axis (O) intermediate between the both transfer sections, to be positioned corresponding to extensions of travel rails (11a), (12a) arranged on the first and second transfer sections (11), (12) to receive two drum transfer support bases (10), (10), which enter from portions of the rails (11a), (12a) of the both transfer sections (1

Abstract: In obliquely cutting a belt band-shaped material (B) to a predetermined length and joining belt material pieces (b) as cut to fabricate a belt member (B10) for a tire, according to the invention, a space, in which an apparatus is mounted, is decreased, a belt member of good quality and high accuracy of joining is manufactured, a cut processing section (A1) for a band-shaped material and an alignment processing section (A2) for belt material pieces as cut are arranged in parallel, in the cut processing section, whenever the band-shaped material (B) is intermittently forwarded, a leading end portion of the band-shaped material is held on a holding table 40 and obliquely cut by a cutter unit (30), the belt material pieces (b) as cut are attracted and held on an underside of a holding member (53) of a transfer unit (T) to be transferred onto and placed on an alignment conveyor (60) with oblique cut ends trued up, and in the alignment processing section, whenever a belt material piece (b) is transferred, the align

Abstract: In the case where a lengthy rubber material (R) is wound on a winding roll (30) mounted on a moving cart (20), the invention prevents excessive bonding of the rubber material between respective layers and is capable of pulling out and supplying the rubber material as wound without a problem, and the lengthy rubber material (R) continuously extruded in a lengthy manner from a rubber extruder to be fed to a winding position is wound to be made spiral with alternately reverse inclination every layer while being caused by a traverse guide to traverse to the winding roll (30) mounted on the cart (20) in accordance with rotation of the roll.

Abstract: The invention can firmly and easily remove a finely divided weft piece without leaving the weft piece by constituting a method and an apparatus of removing weft from a cord fabric for a topping sheet in a calender line for topping rubber on a number of pieces of aligned cords by a calender roll. In the midst of transferring a cord fabric transferred to a calender apparatus, weft is finely divided by passing the cord fabric through weft dividing means, thereafter, a plurality of blades arranged movably in a width direction on an upper face side of the cord fabric are reciprocally moved in the width direction over an entire width thereof to be brought into contact with the cord fabric, and the divided weft piece is wiped off to remove by respectively striking respective cords of the cord fabric by the respective blades.

Abstract: The invention is aimed at shortening time and reducing labor in a work of fitting a multiplicity of cords, respectively, into grooves of a grooved press roll and of a grooved comb roll to align the same in a calender apparatus, in which rubber is topped on the multiplicity of cords as aligned, in an aligning work, the multiplicity of cords are first fitted into grooves on an upper surface side of the comb roll to be aligned, the press roll is then displaced to an alignment transfer position from a standby position close to a topping roll to be opposed to the upper surface side of the comb roll to thereby transfer an aligned state of the cords fitted into the grooves of the comb roll to the press roll as it is to fit the respective cords into grooves of the press roll and to displace the press roll to the standby position while maintaining the fitted state, to set the cords in an aligned state.

Abstract: The invention enables to automatically connect a terminal end portion of a strip-like material drawn out from a winding member constituting an apparatus of supplying the strip-like material and a start end portion of a succeeding strip-like material, at supply support portions 1a, 1b, a strip-like material B is drawn out from one winding member Ba of a plurality of winding members Ba, Bb aligned on support shafts 2a, 2b to be supported thereby, a start end portion of the strip-like material B of other winding member Ba is made to be awaited at an awaiting portion 9a, at every time of finishing transporting the strip-like material B, the strip-like material B is temporarily stopped from being transported, during a time period of stopping to transport the strip-like material B, a start end portion of the strip-like material B of a succeeding winding member Ba is held by a hand apparatus 10 and transported from above the awaiting portion 9a to above a receiving base 7, the start end portion is laminated on a ter

Abstract: The invention provides a driving apparatus for a tire building drum which can reduce load when the drum is rotating, which enables stable expanding and contracting operations and in which a center shaft portion (2) of the building drum (D) is made up of a cylindrical outer shaft (3) and an inner threaded shaft (4), the driving apparatus including a cylindrical outer shaft (13) which is coupled to the outer shaft (3), an inner shaft (14) coupled to the threaded shaft (4), a first motor (15) which is a rotational driving means coupled to the outer shaft (13) for rotating the drum, and a second motor (20) which is a rotational driving means coupled to the inner shaft (14) via a clutch (21) in such a manner as to be engaged with and disengaged from the inner shaft for expanding or contracting the drum, wherein by switching the clutch (21), when the drum is rotating, the second motor (20) is held out of engagement with the inner shaft (14), while when the drum is expanded or contracted, the second motor (20) is he

Abstract: An improvement is achieved in productivity of a tire by preventing an unacceptably molded green tire, which is produced in a molding process, from flowing to a vulcanizing process. Measures therefor comprise putting an unvulcanized green tire on a mount surface of a mount stage, sticking an information label to a side wall of the green tire with a label sticking device arranged below a through-hole formed in a position, which corresponds to an inside of a bead body of the green tire, on the mount surface, and measuring a weight of the green tire with a gravimeter, which supports the mount stage.