LINK MECHANISM FOR OPENING AND CLOSING DIE AND POSITIONING BOTTOM DIE BY SINGLE SHAFT

摘要

A linkage of mould opening and closing and bottom mould positioning is provided in the invention. The linkage is mounted on a bottle blowing machine. The linkage comprises a mould opening and closing assembly and a bottom mould positioning assembly. The mould opening and closing assembly comprises a bottom mould movable relative to a machine frame in up-down direction, a fixed mould plate fixedly disposed on the machine frame, and a moving mould plate rotatable relative to the machine frame. The bottom mould positioning assembly comprises a stop block disposed at the bottom of the moving mould plate, a sliding block slidable relative to the machine frame, a swing member for driving the sliding of sliding block, and a rotation member rotatable relative to the machine frame for driving the swinging of the swing member relative to the machine frame during its' rotation. The rotation member and the moving mould plate are fixedly connected on a rotation shaft which is driven by a power source to rotate a second axis. When the mould opening and closing assembly is in the mould closing state, both the sliding block and the stop block are inserted between the bottom mould and the machine frame and contact against the bottom mould. When the mould opening and closing assembly is in the mould opening state, the moving mould plate is opened relative to the fixed mould plate, such that the stop block and the sliding block are detached from the bottom mould.