Air-flow self-expanding molding blowing device

Abstract

The invention provides an airflow self-expansion molding bottle blowing device. The device comprises a molding module, a molding cavity is machined in the molding module, the upper part of the moldingcavity is equipped with a to-be-shaped bottle blank, an up-and-down motion main air blowing valve is assembled on the opening of the bottle blank, the lower part of the main air blowing valve and theupper part opening of the bottle blank are in seal assembly, the main air blowing valve can blow high-pressure hot gas into the bottle blank, molding fine holes and return air holes are machined on aside wall of the molding cavity, the molding fine holes are connected to a high-pressure air path through a molding control block, and the return air holes are connected to an air extraction module through the molding control block. The device can make bottles of different shapes only by one same molding module, the making process is simple and rapid, and the cost of small-batch bottle shape production is lower.

Description

technical field [0001] The invention belongs to the technical field of bottle blowing equipment, and in particular relates to an air-flow self-expanding molding bottle blowing device. Background technique [0002] Plastic bottle containers are indispensable filling materials in social production and life. The current plastic bottles are mostly processed by blow molding. In the blow molding process, the processed preforms are placed in the blow mold, and high-pressure hot air is blown into the preforms through high-pressure equipment to make the plastic preforms Soften and expand, and then through the limit of the bottle body mold, the plastic bottle can finally be formed in the preform. The shape of the bottle is determined by the shape of the mold. One mold can only process one bottle shape. When different bottle shapes need to be processed, different molds need to be replaced. The cost of mold replacement is relatively high, which makes it inconvenient to process differe...

AI Technical Summary

Problems solved by technology

One mold can only process one bottle shape. When different bottle shapes need to be processed, different molds need to be replaced. The cost of mold replacement is relatively high, which makes it inconvenient to process different plastic bottle shapes by blow molding. , especially when processing a small amount of bottle shapes, the processing cost is relatively high, and the entire processing time is longer due to the need to make molds

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