Abstract: A vulcanizing mold manufacturing method, and a tire vulcanizing mold are disclosed. Tubular bodies each formed by oppositely arranging the inner peripheral surfaces of both end portions of a plate-shaped body are each arranged so that the gap between both opposite end portions thereof is narrowed and that the tips of both end portions come in contact with the surface of the plaster mold, by inserting and fitting both opposite end portions into a fitting portion of a plate-shaped metal fitting protruding from the surface of the plaster mold. Molten metal is poured over the surface of the plaster mold to embed the tubular body in a mold while exposing the tips of both opposite end portions at the tire molding surface of the mold. The metal fitting is removed from the mold, so that a mold having a small gap between both opposite end portions is manufactured.

Abstract: A method for separating and removing a rigid core when building a tire. When the rigid core body is to be separated and removed from the inside of the tire, the method includes removing a core holding mechanism and upper and lower support plates; transferring the tire to a support table; raising a second core separation/removal mechanism; horizontally pulling a first type of segment groups until separated from the inner surface of the tire; lowering the first type of the segment groups below the support table; lowering a first core separation/removal mechanism to the center of the height position of the rigid core body; horizontally pulling the second type of the segment groups until they are separated from the inner surface of the tire; transferring a second type of the segment groups with a second core separation/removal mechanism, and conveying the tire to the subsequent process.

Abstract: A tire vulcanization mold manufacturing method can manufacture a tire vulcanization mold having an exhaust mechanism capable of ensuring sufficient exhaust with fewer processing steps. When a mold having a surface of a gypsum mold transferred to the mold is to be manufactured by pouring molten metal onto the surface of the gypsum mold and solidifying the molten metal, a tubular body having a slit allowing hollow inside to communicate with the outside is disposed in such a way that the slit is brought into contact with the surface of the gypsum mold. Thereafter, the molten metal is poured onto the surface of the gypsum mold in such a way that the tubular body is buried in the mold while the slit is exposed on a tire molding surface of the mold.

Abstract: A camera device includes an image sensor which is assembled into a case, a first perspective-control component including a convex partial spherical surface for performing perspective control, and a second perspective-control component including a concave partial spherical surface having a radius of curvature and a center of curvature which are equal to those of the convex partial spherical surface. Before completion of the assembly of the image sensor into the case, the second perspective-control component is mounted on the first perspective-control component attached to a back side of the image sensor, and perspective control is performed with the convex partial spherical surface and the concave partial spherical surface in surface contact with each other. The first perspective-control component and the second perspective-control component are secured to each other via an adhesive after completion of the perspective control.

Abstract: A device for separating and removing a rigid core when building a tire, including a slide table and positioning means which are provided on a support table of the separation/removal device. The slide table is slidable to convey the tire, whose inner surface is held by the rigid core body and a core holding mechanism, to a central position on the support table. An elevating device is provided on the central axis of the support table, and includes a clamping means to elevate the rigid core body and the tire from which the core holding mechanism is removed, to a position where the rigid core body and the tire do not interfere with the core holding mechanism. A pair of core separation/removal mechanisms are disposed below the center of the support table, capable of elevating movement, and radially contracting and removing each type of the segment groups.

Abstract: A primary formed body is formed by fitting bead rings to outside end portions of a cylindrical body having a film and a carcass material disposed on an outer peripheral side of the film. A green tire is formed on a rigid inner mold by causing a center portion of the primary formed body to bulge toward an outer peripheral side, and holding the center portion by suction on the inner peripheral surface of the transferring/holding mold having a similar shape to the outer peripheral surface of the rigid inner mold, and suspending the suction with the transferring/holding mold, and transferring the primary formed body to an outer peripheral surface of a bladder. The bladder has a uniform thickness and an outer peripheral surface in a neutral state similar to a profile of an inner peripheral surface of a tire to be produced. The green tire is vulcanized.

Abstract: A primary formed body is formed by fitting bead rings to outside end portions of a cylindrical body having an inner liner, a film layered on an outer peripheral side of the inner liner, and a carcass material disposed on an outer peripheral side of the film. A green tire is formed on an outer peripheral surface of a rigid inner mold by prevulcanizing the inner liner in a state where a center portion of the primary formed body bulges toward an outer peripheral side, and is held by suction on an inner peripheral surface of a transferring/holding mold to the outer peripheral surface of the rigid inner mold, placing the rigid inner mold inside the primary formed body, then suspending the suction with the transferring/holding mold, and transferring the primary formed body to the outer peripheral surface of the rigid inner mold. The green tire is vulcanized.

Abstract: A pneumatic tire molding method and apparatus enable a side member to be attached to a tire component member set on an external circumferential surface of a rigid inner mold with intimate contact while preventing deformation of the side member surface shape. An annular recess in an annular holder covers an area corresponding to a tire side section of a carcass material on an external circumferential surface of a circular-cylindrically shaped rigid inner mold having substantially the same shape as a profile of an internal circumferential surface of a tire to be manufactured. Air is sucked from a space between the recess and carcass to reduce space pressure. A holding part is arranged inside the recess, has a holding surface having the same shape as a side member surface, and attaches the side member to the reduced pressure area. Remaining tire components are attached to complete a green tire.

Abstract: A green tire of a pneumatic tire, including a cylindrical annular structure, an unvulcanized rubber layer, which will become a tread portion, provided along a circumferential direction of the annular structure on an outer side of the annular structure, and a carcass portion including fibers covered with rubber, provided on at least both sides in the width direction of a cylindrical structure including the annular structure and the unvulcanized rubber layer, is disposed in a vulcanization mold. The vulcanization mold is split into the side plates and the sector at a position on the inner side in the width direction of the annular structure. Next, the bladder inside the green tire is pressurized after closing the side plates and prior to closing the sector. Then the sector is closed and vulcanization is started.

Abstract: A pneumatic tire including: a cylindrical annular structure; a rubber layer, which will become a tread portion, provided along a circumferential direction of the annular structure on an outer side of the annular structure; a carcass portion provided on at least both sides in a width direction of the cylindrical structure including the annular structure and the rubber layer; and an extending portion that extends from both sides in the width direction of the annular structure farther outward in the width direction than a ground contact edge on the outer side in the width direction of the tread portion, and that is provided in plurality on both sides in the width direction along the circumferential direction of the annular structure.

Abstract: A method for separating and removing a rigid core when building a tire. When the rigid core body is to be separated and removed from the inside of the tire, the method includes removing a core holding mechanism and upper and lower support plates; transferring the tire to a support table; raising a second core separation/removal mechanism; horizontally pulling a first type of segment groups until separated from the inner surface of the tire; lowering the first type of the segment groups below the support table; lowering a first core separation/removal mechanism to the center of the height position of the rigid core body; horizontally pulling the second type of the segment groups until they are separated from the inner surface of the tire; transferring a second type of the segment groups with a second core separation/removal mechanism, and conveying the tire to the subsequent process.

Abstract: Provided are a bisected mold for tire molding that enables manufacturing of high-performance tires and that at a mold clamping, avoids a tire from being pinched to thereby attain a yield enhancement; and a process for manufacturing a tire. Inside a container bisected into upper and lower parts in the state of mold opening, there are disposed a mold for tire molding and, along upper and lower side plates, an unvulcanized tire. After performing vulcanization molding of the unvulcanized tire while changing from this state to a state of mold clamping of sectors and segments split into a plurality of pieces in a circumferential direction of the unvulcanized tire through a driving device and a slide unit means, only the sectors are subjected to mold opening by use of a driving means while maintaining the state of mold clamping of the mold for tire molding and the segments by the driving device and the slide unit means, and subsequently taking the vulcanization-molded tire.

Abstract: A pneumatic tire including a cylindrical annular structure, a rubber layer that will become a tread portion provided along a circumferential direction of the annular structure, on an outer side of the annular structure, and a carcass portion including fibers covered by rubber, provided on both sides in a direction parallel to a center axis (Y-axis) of a cylindrical structure including the annular structure and the rubber layer. In a meridian cross-sectional view of the structure, an outer side of the rubber layer and the outer side of the annular structure have the same form.

Abstract: A pneumatic tire including a cylindrical annular structure, a rubber layer that will become a tread portion provided along a circumferential direction of the annular structure, on an outer side of the annular structure, and a carcass portion including fibers covered by rubber, provided on both sides in a direction parallel to a center axis (Y-axis) of a cylindrical structure including the annular structure and the rubber layer.

Abstract: A tire vulcanization mold manufacturing method and a tire vulcanization mold by which an exhaust mechanism capable of ensuring sufficient exhaust can be formed in fewer processing steps are provided. When a mold having a surface 11a of a gypsum mold 11 transferred thereto is to be manufactured by pouring molten metal M onto the surface 11a of the gypsum mold 11 and solidifying the molten metal M, a tubular body 7 having a slit 8 allowing hollow inside 7a to communicate with the outside is disposed in such a way that the slit 8 is brought into contact with the surface 11a of the gypsum mold 11. Thereafter, the molten metal M is poured onto the surface 11a of the gypsum mold 11 in such a way that the tubular body 7 is buried in the mold while the slit 8 is exposed on a tire molding surface of the mold.

Abstract: A tire vulcanization mold includes an elongated exhaust groove open to a tire molding surface, a plate-like blade inserted in the exhaust groove leaving a small gap between the blade and groove defining surfaces, and an exhaust hole connecting the exhaust groove and mold exterior. The exhaust groove has a length reduced partway in a mold depth direction, and includes upper and shorter lower groove portions positioned on mold surface and back surface sides, respectively, of the mold. The upper groove portion thickness is greater than the blade thickness, and the lower groove portion thickness is less than or equal to the blade thickness. The blade includes a communicating portion connecting the upper and lower groove portions, and abuts against portions of the mold defining a bottom surface of the upper groove portion and edge surfaces of both sides in a thickness direction of the lower groove portion.

Abstract: A camera device (1) includes an image sensor (5) which is assembled into a case (2), a first perspective-control component (6) including a convex partial spherical surface (15) for performing perspective control, and a second perspective-control component (7) including a concave partial spherical surface (21) having a radius of curvature and a center of curvature which are equal to those of the convex partial spherical surface. Before completion of the assembly of the image sensor (5) into the case (2), the second perspective-control component (7) is mounted on the first perspective-control component (6) attached to a back side of the image sensor (5), and perspective control is performed with the convex partial spherical surface (15) and the concave partial spherical surface (21) in surface contact with each other. The first perspective-control component (6) and the second perspective-control component (7) are secured to each other via an adhesive after completion of the perspective control.

Abstract: A green tire (G) is formed by stacking a tire component such as a carcass layer (13) on a film (12) which is made of a thermoplastic resin or a thermoplastic elastomer composition and which is disposed on the entire outer circumferential surface of a cylindrical rigid inner die (1) formed of split parts (2). The green tire (G) is placed in a vulcanizing mold together with the rigid inner die (1) and then heated to a given temperature. The film (12) is pressurized from the inner circumferential side and inflated, and the green tire (G) is vulcanized. Thus, unvulcanized rubber of the tire components is pressed toward the inner circumferential surface of the vulcanizing mold and flows in circumferential directions. As a result, volume unevenness of the tire components is corrected. The film (12) which functions as a bladder is tightly bonded to the inner circumferential surface of the tire to become an inner layer of the tire.

Abstract: A device for separating and removing a rigid core when building a tire, including a slide table and positioning means which are provided on a support table of the separation/removal device. The slide table is slidable to convey the tire, whose inner surface is held by the rigid core body and a core holding mechanism, to a central position on the support table. An elevating device is provided on the central axis of the support table, and includes a clamping means to elevate the rigid core body and the tire from which the core holding mechanism is removed, to a position where the rigid core body and the tire do not interfere with the core holding mechanism. A pair of core separation/removal mechanisms are disposed below the center of the support table, capable of elevating movement, and radially contracting and removing each type of the segment groups.

Abstract: A dome cover (6) is manufactured by injection molding by steps of: forming a cavity (14) having the shape of the dome cover (6) between an upper mold (12) and a lower mold (13) for an injection molding die (11), providing a gate port (16) for injecting melt resin at a position (of the upper mold (12)) corresponding to the zenithal portion (15) of the dome cover (6), and injecting the melt resin into the cavity (14) through the gate port (16). The resin injected from the center portion (the portion corresponding to the zenithal portion (15) of the dome cover (6)) of the cavity (14) flows uniformly toward the circumference of the cavity (14). Therefore, variations in pressure and temperature of the resin in the cavity (14) are restrained and, consequently, molding irregularity of the manufactured dome cover (6) is restrained. According to the method of manufacturing the dome cover as described above, generation of the partial molding irregularity on the manufactured dome cover is restrained.