BLOW MOULD WITH LINKAGE MECHANISM BETWEEN SINGLE SHAFT DIE OPENING AND CLOSING AND BOTTOM DIE CLAMPING

A linkage of mould opening and closing and bottom mould locking is provided in the invention. The linkage comprises a mould opening and closing assembly and a driving assembly. The mould opening and closing assembly comprises a liftable bottom mould, a fixed mould plate disposed on the machine frame of the bottle blowing machine, and a moving mould plate cooperating with the fixed mould plate. The linkage also comprises a bottom mould locking assembly for locking the bottom mould when the bottom mould rises. The bottom mould locking assembly comprises a rotation member, a swing member connected with the rotation member in transmission way, and a sliding block connected with the swing member in transmission way. The swing member is rotatable relative to the machine frame around a first axis, and the sliding block is slidably disposed on the machine frame. The driving assembly comprises a rotation shaft rotatable around a second axis, and a power source for driving the rotation shaft to rotate. The moving mould plate and the rotation member are fixedly connected with the rotation shaft. The linkage of the mould opening and closing assembly and the bottom mould locking assembly are driven by one rotation shaft. Thus, the driving is achieved by a simple configuration, and the whole device of the invention is simple in structure and convenient in operation.