A Bead Locking Apparatus of Shaping Drum of Pneumatic Radial Tire

摘要

The present invention improves the assembly of the turnover bladder of the molding machine drum in the molding machine drum of the pneumatic radial tire which forms the green case by turning the inner liner and the body ply into the bead assembly with a turn-up bladder. A bead locking device, in detail, the inflation pressure (5) of a turn-down bladder (3) which acts when turning the inner liner (5) and the body ply (6) onto the bead assembly (4) on the forming drum (1). The bead base part (by pressing the bead locking device 8 against the bead base part 7) by preventing the change of the position of the bead assembly 4 due to the kg / cm 2) and the turn-over pressure (6 kg / cm 2). The present invention relates to a device for reducing bead air intake and repair by reducing air mixed in 7).