Lock opening and closing mechanism for bottle blowing machine die frame

Abstract

The invention discloses a lock opening and closing mechanism for a bottle blowing machine die frame. The mechanism comprises a first elastic part which is arranged on a second die frame and is used for driving a movable claw to rotate far away from a bottle blowing chamber, an elastic locking mechanism which is elastically telescopically arranged on the second die frame and is ejected to stop themovable claw to rotate far away from the bottle blowing chamber, and a control block which is arranged on a fixed claw and is used for propping the elastic locking mechanism to contract and be far away from the movable claw; when a first die frame and the second die frame are rotated to close a die, the elastic locking mechanism is propped through the control block; the movable claw is rotated faraway from the bottle blowing chamber and is hooked and locked to the fixed claw; and when the first die frame and the second die frame are rotated to open the die, the control block is far away fromthe elastic locking mechanism, and the movable claw is rotated to be close to the bottle blowing machine and is separated from the fixed claw, defects of holding force for building of the two claws inan existing claw type lock opening and closing structure and risk of bottle breaking can be overcome; and the two die frames can be interlocked without being driven through guide rails.

Description

technical field [0001] The invention relates to the technical field of bottle blowing, in particular to an opening and closing mechanism for a mold base of a bottle blowing machine. Background technique [0002] For the rotary blow molding machine in which the two side mold frames rotate during the mold opening and closing process, the existing opening and closing technical solutions for the two side mold frames are as follows: [0003] Bolt-type opening and closing lock: In this technical scheme, a bolt that can move up and down is installed on one side formwork, and a bolt hole that cooperates with the bolt is arranged on the other side formwork. During the mold clamping and bottle blowing process, the pin on one side mold base is inserted into the pin hole on the other side mold base to prevent the relative rotation (locking) of the two side mold bases; The latch exits the latch hole on the other side formwork, allowing the relative rotation (unlocking) of the two side f...

AI Technical Summary

Problems solved by technology

Existing embodiments of this technical solution adopt a structure in which the fixed claw buckle faces outward and the movable claw buckle faces inward, which has the following defects: 1) The centrifugal inertial force of the movable claw faces the direction of the two claws to release, in order to ensure the bottle blowing process The two claws in the middle can be effectively interlocked, and a large reverse holding force must be exerted on the movable claws; 2) If the bottle bursts (referring to the rupture of the preform) during the blowing process, the high-pressure airflow leaking from the blowing cavity may make the two Claw tripped, causing more serious accidents

However, the existing claw-type opening and closing technical solutions still have defects such as the large holding force required for effective interlocking of the two claws and the risk of bottle explosion, and the unlocking and locking are both driven by guide rails, which is still relatively complicated and needs further improvement

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