Blank supplying and automatic bottle shedding mechanism of plastic blowing machine

Abstract

The invention relates to a blank supplying and automatic bottle shedding mechanism of a plastic blowing machine, which comprises a stander, a template, a die, a die opening and closing mechanism and a blowing mechanism, wherein the template, the die and the die opening and closing mechanism are arranged on the stander. The blank supplying and automatic bottle shedding mechanism of the plastic blowing machine is characterized in that a blank supplying device and an automatic bottle shedding mechanism are arranged on the die, the blank supplying device comprises a supporting plate which is arranged on the stander or the die, a plastic bottle blank guide cylinder is arranged in the supporting plate, the center of the guide cylinder is in the same straight line as the center of the die, and ablank receiving fork is arranged on a die orifice of the movable die and contacted with a plastic bottle blank; the automatic bottle shedding mechanism comprises a bottle mouth extruding device and abottom die rotating device, the bottle mouth extruding device comprises a pushing plate and a spring which are fixed on the die orifice of the fixing die, and a post rod is arranged on the movable die and matched with the pushing plate; and the bottom die rotating device comprises a rotating shaft which is connected in series with bottom dies, the head of the rotating shaft is provided with a pulling block which is contacted with a contact rod arranged on the stander or the die to rotate, and the rotating shaft is provided with a resetting spring.

Description

technical field [0001] The invention relates to a plastic stretch-blow machine, in particular to an upper preform of the plastic stretch-blow machine and a mechanism for automatically ejecting and forming bottles, belonging to the field of plastic machinery, and suitable for producing plastic hollow containers such as mineral water bottles and oil bottles. Background technique [0002] When the plastic hollow container is processed by the two-step method of injection molding and stretch blowing, the plastic raw material such as PET is first injected into a preform by the injection molding machine, and the preform needs to be heated by a heater for a second time, and then the heated preform is put into the stretch blowing machine Stretching and blowing in the mold to form a bottle, the existing technology can combine the heater and the stretch blowing machine on one machine, and the preform heated on the heater can automatically enter the stretch blowing machine mold, which is...

AI Technical Summary

Problems solved by technology

On the one hand, the operator of the semi-automatic stretch blowing machine takes out the heated preform from the heater and puts it into the stretch blowing machine mold, and on the other hand takes out the formed bottle in the stretch blowing machine mold by hand. The reasons are as follows: first, the labor intensity is very high, and you are constantly busy; second, the mouth of the plastic preform is made with threaded ribs and limit stop rings, and corresponding grooves are made on the mold. The ribs and rings need to fit well with the grooves when making the mold, so it is very troublesome and the production efficiency is low; the third is that the hands are easy to be crushed by the mold if you take the bottle carefully, and there are hidden dangers of work-related injuries

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