Blow molding device used for producing plastic barrel

Abstract

The invention relates to a blow molding device used for producing a plastic barrel. The blow molding device comprises a base, an extruding machine, an air blowing mechanism, two first air cylinders and two dies. The air blowing mechanism comprises a sealing plate, an air blowing pipe, an air storing tank, a rotating assembly, a telescoping plate, two telescoping assemblies and two second air cylinders. A fixing plate and a plurality of air blowing assemblies are arranged in the air blowing pipe. Each air blowing assembly comprises a drive unit and two air blowing units. Each air blowing unit comprises an air blowing hole, a sealing block, a moving plate and two springs. According to the blow molding device used for producing the plastic barrel, when the air blowing assemblies are utilizedfor blowing air into a plastic parison, the telescoping assemblies drive the air blowing pipe to extend into the parison gradually, the rotating assembly drives the air blowing pipe to rotate, the airblowing hole in the air blowing pipe located in the parison is opened, thus air acts into the plastic parison uniformly, uniformity and consistency of the wall thickness of the produced plastic barrel are ensured, and then the production quality of the plastic barrel and the practicality 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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