Tight ventilation once molding bottle opening machining process

Abstract

The invention discloses a tight ventilation once molding bottle opening machining process. The process comprises the steps of a container raw material, blow molding, blank extrusion, mold shifting, a blowing needle mold, mold closing molding, blowing needle demolding, mold opening, bottle opening aftertreatment and quality inspection; the mold includes a left bottle mold and a right bottle mold symmetrically arranged; bottle shanks, annular sections and conical sections are arranged at the bottle mouth parts of the left bottle mold and the right bottle mold; a conical table mold section, a push table mold section and a bottle shank mold section are arranged on the blowing needle mold; the conical table mold section and a conical section are matched to press a tight inclined port; the push table mold section is matched with an annular section to press a bottle mouth with a smooth inner wall; and the bottle shank mold section is matched with the bottle shank section to press a bottle shank. The process realizes safe ventilation between a bottle cap and the bottle mouth through self deformation of the bottle cap by using an expansion force effect between the tight inclined port and the bottle cap, synchronously realizes a gas ventilation effect and a liquid sealing function, and is simple in process and high in yield.

Description

technical field [0001] The invention relates to the technical equipment field of a sealed and breathable container, in particular to a process for processing a sealed and breathable one-time forming bottle mouth. Background technique [0002] With the continuous development of the blow molding industry and the widespread use of daily chemical packaging products, people pay more and more attention to the low cost and high performance of blow molding products. In order to prevent the overflow of the liquid contained in the container, the traditional container adopts a sealed structure, and the completely sealed structure of the container containing the volatile or easily decomposed liquid is not suitable. When the volatile or easily decomposed liquid is subjected to light, heat or vibration, Especially in the process of transportation or handling, the air pressure in the container may exceed the safe value of the container, thereby causing an accident of flushing the cover, or...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the container that realizes the function of sealing and venting usually adopts the container cover to set the vent hole and the vent channel structure, and there are also cases of using a sealed vent pad; The environment and means of transportation cause pollution, and may also corrode the means of transportation; the use of air-permeable cushions may easily cause pollution or blockage of the air-permeable cushion, resulting in failure of the air-permeable performance. The processing cost of the air-permeable cushion is high, the processing procedure is complicated, and the production cost is too high

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