A blow molding device for the production of plastic barrels

Abstract

The invention relates to a blow molding device for the production of plastic barrels, comprising a base, an extruder, an air blowing mechanism, two first air cylinders and two moulds, and the air blowing mechanism includes a sealing plate, an air blowing pipe, an air storage Tank, rotating assembly, telescopic plate, two telescopic assemblies and two second air cylinders, fixed plate and several air blowing assemblies are arranged in the described air blowing pipe, and described air blowing assembly includes drive unit and two air blowing units, so The blowing unit includes a blowing hole, a sealing block, a movable plate and two springs. The blowing device used for the production of plastic barrels uses the blowing component to blow air into the plastic parison, and the stretching component drives the blowing pipe to extend gradually. Into the parison, use the rotating assembly to drive the blowing pipe to rotate, and open the blowing hole on the blowing pipe in the parison, so that the air acts evenly in the plastic parison, ensuring that the inner wall thickness of the produced plastic barrel is uniform, and then The quality of plastic barrel production and the practicability of the blow molding device are improved.

Description

technical field [0001] The invention relates to the field of plastic barrel production equipment, in particular to a blow molding device for plastic barrel production. Background technique [0002] Plastic barrels are mostly used for the storage and transportation of various liquids, and have good characteristics for special dangerous goods packaging. They are not fragile, rust-free, light in weight, etc., and have excellent oil resistance and corrosion resistance. They are mostly used for heat preservation, Moisture-proof, pressure-resistant and corrosion-resistant dangerous goods packaging. At present, most plastic barrels are produced by various blow molding devices. [0003] When the existing blow molding device is in operation, the main work flow is that the tubular plastic parison obtained by extrusion or injection molding of thermoplastic raw materials is placed in a pair of open molds while it is hot, and the compressed air is injected into the parison immediately a...

AI Technical Summary

Problems solved by technology

However, when the existing blow molding device blows air inside the parison, because the blowing position is fixed, in the plastic parison formed under pressure in the mold cavity, the plastic bucket will not The inner wall of the plastic bucket is relatively thick due to the small air extrusion force, and the inner wall of the plastic bucket is relatively thin due to the large air extrusion force near the blowing position, so that the thickness distribution of the inner wall of the plastic bucket formed is uneven, reducing the Production quality of plastic barrels

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