公开(公告)号：US5164035A

公开(公告)日：1992-11-17

申请号：US691286

申请日：1991-04-25

申请人： Tsuneharu Nakajima ,  Toshio Tokunaga ,  Hiroshi Nakashima

发明人： Tsuneharu Nakajima ,  Toshio Tokunaga ,  Hiroshi Nakashima

IPC分类号： B29D30/24

CPC分类号： B29D30/245

摘要： A tire building apparatus includes a main hollow shaft, a rotatable screw shaft inserted in the main shaft, a pair of slider units 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 expansibly and contractibly supported by the slider units for supporting the bead portions of the green case on radially insides by the support member assemblies when expanded to increase their diameters, a pair of movable blocks axially movably supported to be able to abut against the slider units, a drum core in the form of a ring to surround the main shaft between the slider units, a link mechanism 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 for limiting axially outward movement of the movable blocks when the drum core contracts to its minimum diameter, and a spring for urging the movable blocks axially outwardly.

公开(公告)号：US4472233A

公开(公告)日：1984-09-18

申请号：US512995

申请日：1983-07-12

申请人： Yoshihiro Fukamachi ,  Tsuneharu Nakajima ,  Jun Mizuno ,  Tadashi Maehara

发明人： Yoshihiro Fukamachi ,  Tsuneharu Nakajima ,  Jun Mizuno ,  Tadashi Maehara

IPC分类号： B29D30/24 ,  B29C67/00 ,  B29D30/00 ,  B29D30/36 ,  B29H17/16

CPC分类号： B29D30/36

摘要： A radial tire building drum for forming a radial tire green case having bead portions into a toroidal shape, includes a drive shaft rotatable about a center axis of rotation and movable in a fore-and-aft direction thereof, a pair of drum units carried on the drive shaft and having a common center axis of rotation which is in axially alignment with the center axis of the drive shaft, the drum units being axially movable toward and away from each other along the center axis of the drive shaft by driving at least one of the drum units to move along the common center axis of rotation, a plurality of arcuate drum segments each retained to the pair of drum units and formed with an annular groove circumferentially extending therethrough, each of the arcuate drum segments being radially movable toward and away from the common center axis. The drum further includes a pair of annular rubber sealing members for hermetically sealing space defined by the green case and the pair of drum units and each having a radially inner end portion, a radially outer end portion and a bellows portion intervening between the radially outer end portion and the radially inner end portion, the radially inner end portions being supported by the drum units, the radially outer end portions being tightly received in the annular grooves formed in the arcuate drum segments.

摘要翻译： 一种用于形成具有胎圈部分成环形形状的子午线轮胎绿色壳体的子午线轮胎成型鼓，包括可绕旋转中心轴线旋转并可在其前后方向上移动的驱动轴，一对鼓单元 所述驱动轴具有与所述驱动轴的中心轴线轴向对准的公共中心轴线，所述鼓单元可沿着所述驱动轴的中心轴线彼此轴向移动并通过驱动轴驱动至少一个 鼓单元沿着共同的中心轴线移动，多个弧形鼓段，每个圆盘鼓段保持在一对鼓单元上，并且形成有周向延伸穿过其中的环形凹槽，每个弓形滚筒段可朝向和远离地径向移动 从共同的中心轴。 滚筒还包括一对环形橡胶密封构件，用于气密地密封由绿色壳体和一对鼓单元限定的空间，并且每个具有径向内端部分，径向外端部分和介于径向外端部之间的波纹部分 所述径向内端部由所述鼓单元支撑，所述径向外端部紧密地容纳在形成在所述弧形鼓段中的环形槽中。