A mold locking mechanism for blow molding equipment

Abstract

Disclosed in the present invention is a mold clamping mechanism of a blow molding device. A self-locking position is arranged at an ending point of a slide channel, on a side of a swing arm away from a hinged shaft. When rolling along a mold clamping guide rail, a roller of a roller assembly drives the swing arm to swing so as to drive a shifting shaft to move relative to the slide channel. When the shifting shaft moves from a starting point to the ending point of the slide channel, a connecting block and a mold clamping shaft assembly are driven to descend. When the shifting shaft moves into the self-locking position of the sliding channel, a pin bolt exits downwards from an insertion hole and the self-locking is realized. Unlike the prior art, the present invention does not need to dispose a bolt hole and a mold clamping bolt that can be inserted into the bolt hole, thus avoiding strong impact and loud noise typically generated by the prior art, and also preventing common situations of unstable and unreliable operation and short service life in the prior art.

Description

technical field [0001] The invention relates to blow molding equipment, in particular to a mold locking mechanism of blow molding equipment. Background technique [0002] The rotary frame of the blow molding equipment is equipped with multiple workstations with mold parts and mold clamping mechanisms. When working, the drive mechanism drives the mold base of the mold clamping mechanism to open or close at the set time, thereby driving the mold base on the mold base. The mold is opened or closed simultaneously with the mold base to ensure that the preform can be quickly sent into the cavity of the mold for blow molding into a plastic container, and that the finished plastic container can be quickly taken out of the cavity of the mold. [0003] like figure 1 Shown is a mold clamping mechanism in the prior art, which uses a swing structure to lift the mold clamping shaft assembly to unlock the mold, including the swing arm assembly 200 installed on the right mold base 600 and ...

AI Technical Summary

Problems solved by technology

[0004] However, the disadvantages of this mold locking mechanism are: 1. When the mold locking pin 400 is inserted into the locking nostril 101 of the mold locking shaft assembly 100 under the action of the elastic force of the spring 800, a relatively strong impact will occur and a relatively large noise will be generated; 2. 1. When the left and right mold bases 500 and 600 are closed, the left mold base 500 and the clamping pin 400 will also produce noise due to impact, and this impact is to make the clamping pin 400 withdraw from the lock nose 101 to ensure that the clamping shaft assembly 100 rises to achieve 3. If the spring is fatigued due to quality problems or too many cycles, the locking pin 400 will not be able to be inserted and withdrawn from the lock nose hole 101 normally, and the reliability of the mechanism will be reduced.

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