MOLD ALIGNING AND CLAMPING APPARATUS OF TIRE VULCANIZING MACHINE

摘要

PURPOSE:To rapidly and easily perform the centering work at the time of the replacement of a mold and the clamping work of a lower mold by mounting upper and lower molds on a piston rod having a non-directional bearing to perform centering by the parallel link motion of the centering member connected to the piston rod through a link. CONSTITUTION:When a new mold is placed on the non-directional bearing 53 of a mold support member 54, the pressure in the lower pressure chamber 68 of a hydraulic cylinder 51 rises to a prescribed value or more to be discharged from a relief valve 73. At this time, the centering member 57 connected to a piston rod 52 by a link 58 is pulled downwardly and parallelly moved in the center direction of a vulcanizing machine centering around the fulcrum pins 59 of parallel links 56 to push the mold on the bearing 53 toward the center of the vulcanizer. In the final stage, the centering in the circumferential direction of the mold is also performed by the aligning surface 63 having a V-shape cross-section provided to the inside surface of the centering member 57. When a change-over valve 69 is operated from this state to supply a pressure fluid for clamping to an upper pressure chamber 67, a lower mold 26 is fixed to the surface of a lower hot plate in a pressure contact state by a clamp pawl 64.