Patent ID: 6164430
Filing Date: 2000-12-26
Classification: B65G,F16F

Abstract:
A stopper cylinder provided with a lock mechanism for stopping a workpiece at a predetermined position by holding, at a predetermined position, a lever provided with rollers rotatably supported thereon, when said workpiece, which is conveyed in a predetermined direction, abuts against said rollers, said stopper cylinder comprising:a main cylinder body;a lever holder provided on an upper side of said main cylinder body, for rotatably supporting said lever to be rotatable by a predetermined angle;a fastening pin member provided on a side surface of said lever, for making rotational displacement integrally with said lever; anda bracket rotatably supported on both side surfaces of said lever holder and provided with a guide section for making engagement with said fastening pin member, wherein:an external force, which is applied in a direction opposite to said conveyance direction of said workpiece, causes rotational displacement of said bracket in accordance with a guiding action of said fastening pin member by the aid of said guide section, and thus said lever is released from a locked state.