Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Sumitomo Rubber Industries Limited

The Yokohama Rubber Co., Ltd.

Nobuhiko Irie

Akira Hasegawa

Hideaki Katayama

Katsuyoshi Sakaguchi

Toshifumi Murakami

Akinori Kubota

Michihito Kobayashi

Masaaki Ijiri

Koji Soeda

Yoshiya Kubota

Shoji Okamoto

Teruaki Muta

Jiro Agawa

Masayoshi Kubo

Masato Yamada

Masami Kawasaki

Yoshihiro Fukamachi

Minoru Kimura

Susumu Ozawa

Kiyoshi Tomosada

Yoshito Mochinaga

Hiroshi Uotani

Takaomi Hanyu

Toshihisa Ikeda

Akira Nakahara

Yoshiharu Itayama

The present invention provides a radial tire forming apparatus capable of being applied to the formation of a carcass band having a large folding length. On a housing for a rollover device of the tire forming apparatus, a plurality of sets of straight rail bearers are fixed at appropriate places, so that a frame provided with rails is advanced toward or retreated from a second forming point on the carcass forming former side by a cylinder fixed to the housing. The diameter of a first rollover ring is slightly smaller than the diameter of a second rollover ring. When the rollover rings are brought closest to each other, the cylindrical portions of the rings enter and lap on each other.

Radial tire forming device

A tire vulcanizing system has a mold assembly M for vulcanizing a tire, which has a bladder assembly M which is supplied with a heating/pressurizing medium, a heating chamber C at the outer peripheral portion of a tire mold C, and upper and lower heating plates M A and M A of the tire mold, and is configured movably and so as to be capable of overcoming a force to open the mold by means of the pressure in a bladder BL; a plurality of mold opening/closing and vulcanizing stations each of which receives the mold assembly M and opens and closes the same, and has a vulcanized tire unloader a green tire loader and a bladder operating/driving device a changing/preheating station which performs the change and preheating of the tire mold C incorporated in the mold assembly M and a bladder assembly and mold transportation apparatus which reciprocates between these two stations and to transport the mold assembly M. Also, the mold opening/closing and vulcanizing station comprises a base frame a pillar for elevation and guidance, which is erected on the base frame an upper movable plate which can freely be moved vertically by being guided by the pillar and connecting/disconnecting device for connecting and disconnecting the upper movable plate to and from the tire mold assembly M.

Tire vulcanizing system and mold opening/closing and vulcanizing station therefor

There is provided a tire vulcanizing system which can easily be arranged in an existing tire factory. The present invention provides a tire vulcanizing system having a vulcanizing station for mounting a plurality of sets of tire mold assemblies M on a flat surface of a predetermined height and a tire mold opening/closing station formed along the vulcanizing station , in which a tire mold opening/closing device , which takes out the tire mold assembly M from the vulcanizing station , and opens and closes the tire mold assembly M, is provided at the tire mold opening/closing station , and the tire mold opening/closing device is provided with an upper movable plate capable of elevating an upper mold Ma of the tire mold assembly M by connecting with the upper mold Ma, a horizontal transfer device for transferring the tire mold assembly M on the same level as the height of the flat surface, and a lower fixed plate capable of fixing a lower mold Mb of the tire mold assembly M.

Tire vulcanizing system

A tire vulcanizing system of the present invention comprises a plurality of rows of tire vulcanizing stations which contain a plurality of sets of movable tire mold assemblies to vulcanize a tire; a mold opening/closing station which is disposed at the tire vulcanizing stations to receive the tire mold assembly to open and close a tire mold, by which a vulcanized tire is removed and a green tire is inserted; and a first mold transporting device and a second mold transporting device which are disposed between the mold opening/closing station and the tire vulcanizing stations to transport the tire mold assembly.

Tire vulcanizing system and tire vulcanizing method

A tire-vulcanizing machine in accordance with the present invention comprises a base frame, a guide column erected on the base frame, an upper movable beam guided by the column so as to move up and down, and two connection/disconnection units for connecting or disconnecting the upper movable beam to or from tire mold assemblies disposed on both sides of the column, wherein both the tire mold assemblies are opened or closed simultaneously or individually.

Tire-vulcanizing machine

A tire vulcanizer in accordance with the present invention comprises a fixed base on which tire vulcanization molds are mounted, a movable frame which can reciprocate in the longitudinal direction on the fixed base, and an elevating frame attached to the movable frame so as to be raised and lowered. After the tire vulcanization mold is opened by raising the elevating frame and lifting an upper half mold of the tire vulcanization mold, the upper half mold of the tire vulcanization mold is moved to the rear by the movable frame to carry out the removal of a vulcanized tire and the supply of a green tire.

Tire vulcanizer

A plurality of green tire storage tables and a green tire loading/unloading apparatus for transferring a green tire on the green tire carrier onto the green tire storage table are provided between a green tire loader at the mold opening/closing station and a plurality of green tire carriers, at least one green tire storage table of the green tire storage tables is a movable green tire storage table, the movable green tire storage table being capable of reciprocating between a first position where a green tire is received by using the green tire loading/unloading apparatus and a second position where a green tire is delivered to the green tire loader, the green tire loading/unloading apparatus can travel between the plural green tire carriers and the plural green tire storage tables, the green tire held horizontally on the movable green tire storage table or by the green tire loading/unloading apparatus is turned so that the positioning control of green tire can be carried out, and the green tire type mark attached to the green tire surface can be read by a green tire type reading device of the movable green tire storage table or a green tire type reading device of the green tire loading/unloading apparatus.

Green tire supply facility for a tire vulcanizing system

(1) During vulcanization, a tire clamping device C is released. (2) After vulcanization has been completed in one tire mold M, the tire mold clamping device C on the side of this tire mold assembly M is operated, so that an upper mold M.sub.2 is connected to an upper mold attaching plate 1. (3) The upper mold attaching plate 1 is raised and the upper mold M.sub.2 connected to the upper mold attaching plate 1 is opened, while on the side of the other tire mold assembly M, vulcanization is continued with the upper mold M.sub.2 being closed. (4) On the side of one tire mold assembly M in which vulcanization has been completed, the removal of the vulcanized tire and the insertion and forming of an unvulcanized tire are carried out in sequence by the procedure similar to the conventional one, and then the upper mold M.sub.2 is closed. Then, a predetermined heating/pressurizing medium is supplied to start vulcanization. For the period from this time to the completion of vulcanization, the tire mold clamping device C is released. (5) On the side of the other tire mold assembly M as well, when vulcanization is completed and the time of opening/closing the upper mold M.sub.2 is reached, the upper mold M.sub.2 is opened and closed by the same procedure.

Tire vulcanizing method using a tire vulcanizer

After a carcass band is elastically deformed temporarily into a standing wave shape, a bead core is located at a predetermined position on the outside of the carcass band. The elastic deformation of the carcass band is eliminated, and the carcass band is pressed against the inner peripheral surface of the bead core to form a first assembly. The first assembly is held by a first transfer from the outside, and an inner liner band of cylindrical shape with an outside diameter smaller than the inside diameter of the first assembly, is located at a predetermined position in the first assembly. The inner liner band is expanded and pressed against the inner peripheral surface of the first assembly to form a second assembly. Then, a third assembly composed of a sidewall, chafer and the like of cylindrical shape and having an outside diameter smaller than the inside diameter of the second assembly, is located at a predetermined position in the second assembly. The third assembly is expanded and pressed against the inner peripheral surface of the second assembly to form a fourth assembly, and the fourth assembly held by the first transfer is moved to a predetermined position on the shaping drum, where the fourth assembly is formed into a toroidal shape and assembled to a belt-tread assembly, which is formed into a cylindrical shape separately, to form a green tire.

Apparatus for forming a radial tire

A tire vulcanizing mold assembly includes an upper flange disposed on an outer peripheral portion of an upper mold of a tire vulcanizing mold or an upper flange disposed in the outer peripheral portion of a plate into which the upper mold is assembled, a lower flange disposed in an outer peripheral portion of a plate into which a lower mold is assembled so as to go up and down, and a lock ring which is rotatably assembled into one of the respective flanges and detachably engaged to the other flange, wherein one end portion of a pressurizing unit is detachably engaged to the plate, an output shaft is engaged onto the other end portion of the pressurizing unit so as to abut against the lower mold through the plate portion, and when the tire vulcanizing mold is closed so that the respective flange portions are coupled to each other by the lock ring, a mold opening force due to the inner pressure of the tire vulcanizing mold is prevented.

Tire vulcanizing mold assembly

A tire vulcanizing system includes a vulcanizing station in which a plurality of sets of tire molds for vulcanization are arranged; a mold opening/closing station having a mold opening/closing device for opening/closing the tire mold, a loader for inserting an unvulcanized tire into the tire mold, and an unloader for removing a vulcanized tire from the tire mold; and a transferring device for transferring a tire mold between the vulcanizing station and the mold opening/closing station.

A method of loading a green tire on a bladderless tire vulcanizer of the inside gripping type and an apparatus thereof, in which both bead portions of the green tire can be inserted into respective bead rings of a mold accurately and reliably. The constitution is such that, on a bladderless tire vulcanizer having a pair of upper and lower pressing members 8 and 9 in opposition to the upper and lower bead rings of tire molds and capable of being expanded and shrunken to mold the inner surfaces of the bead portions of the tire, a green tire is supplied to a position above a lower mold 4 from above the shrunken pressing members 8 and 9 while the inside of the upper bead portion of the green tire is gripped; the pressing members 8 and 9 are interposed between the upper and lower beads of the green tire whose upper bead portion is gripped; the pressing members 8 and 9 are expanded radially; the gripping of the green tire is released; the green tire is shifted to the pressing members 8 and 9; the pressing members 8 and 9 are lowered; and the lower bead portion of the green tire is seated on the lower bead ring 5 portion of the lower mold.

Apparatus for loading of green tire on bladderless tire vulcanizer

A tire transporter which shuttles between a vulcanizing station 1 in which plural pairs of tire molds are arranged to perform vulcanization and a mold opening/closing station 2 in which the tire mold is opened and the vulcanized tire is taken out from the tire mold. Subsequently, an unvulcanized tire to be vulcanized is inserted into the tire mold and shaped before the tire mold is closed. The tire transporter includes a first railway 4 disposed along the vulcanizing station 1 and the mold opening/closing station 2. A truck is provided and moves along the first railway between a first position P1, set in the mold opening/closing station 2, and second positions P2, set at a plurality of portions in front of the vulcanizing station 1. A second railway 12 is disposed on the truck along a direction orthogonal to the first railway 4. A plurality of third railways 13 are disposed at the third positions P3, which are set at a plurality of portions in the vulcanizing station 1, along a direction orthogonal to the first railway 4. Also, a mold transfer unit 32 is provided and moves along the second and third railways 12 and 13 when one of the third railways 13 and the second railway 12 on the truck 19 are connected to each other.

Tire mold transporter

In the present invention, when a tire is vulcanized, a flange fixed to either one of a top plate of a split mold and a piston rod tip end of a split mold opening/closing cylinder is held by operating fingers. The fingers are assembled in such a manner to be capable of oscillating in the holding direction by the return force of a spring. The top plate is connected to a piston rod of the split mold opening/closing cylinder. Thereupon, the split mold is opened and closed by the output of the split mold opening/closing cylinder and the vertical movement of a bolster plate. When the split mold is replaced, holding is released by oscillating the fingers by using a finger driving device, by which the top plate is separated from the piston rod of the split mold opening/closing cylinder.

Split mold opening/closing device for a tire vulcanizer

A tire vulcanizer is provided with a vulcanizing station where tire vulcanizing molds are arranged to perform vulcanization. The tire vulcanizer also includes a mold opening/closing station where, after the tire vulcanizing mold is opened, a vulcanized tire is taken out from the inside of the tire vulcanizing mold, and then an unvulcanized tire to be succeedingly vulcanized is inserted into the inside of the tire vulcanizing mold so as to be shaped before the tire vulcanizing mold is closed. Also, a mold carrier truck is provided which is movable between the vulcanizing mold and the mold opening/closing station. An unvulcanized tire storage section is disposed above each of the tire vulcanizing molds in the vulcanizing station.

Growing community of inventors

Nagasaki, Japan

Nobuhiko Irie