Title:
【発明の名称】タイヤ成型装置
Document Type and Number:
Japanese Patent JP3080966
Kind Code:
B2
Abstract:
A tire building apparatus (1) includes a main hollow shaft (2), a rotatable screw shaft (3) inserted in the main shaft, a pair of slider units (15) axially movably supported so that upon rotating the screw shaft the slider units move through equal distances toward and away from each other, a pair of support member assemblies (19) expansibly and contractibly supported by the slider units for supporting the bead portions (B) of a green case (G) on radially insides by the support member assemblies when expanded to increase their diameters, a pair of movable blocks (27) axially movably supported to be able to abut against the slider units, a drum core (33) in the form of a ring to surround the main shaft between the slider units, a link mechanism (37) connecting the drum core and the movable blocks for expanding the drum core when the movable blocks move axially inwardly toward each other and contracting the drum core when the movable blocks move axially outwardly away from each other, a pair of stoppers (40) for regulating axially outward movement of the movable blocks when the drum core contracts to its minimum diameter, and a spring (42) for urging the movable blocks axially outwardly.
Inventors:
Tsuneharu Nakashima
Toshio Tokunaga
Koji Nakajima
Toshio Tokunaga
Koji Nakajima
Application Number:
JP11632090A
Publication Date:
August 28, 2000
Filing Date:
May 02, 1990
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B29D30/24; (IPC1-7): B29D30/24
Domestic Patent References:
| JP5072976A | ||||
| JP551181B2 | ||||
| JP5938097B2 |
Attorney, Agent or Firm:
Toshio Tada