Stationary blow molding machine and method for forming plastic parisons

Abstract

The invention relates to a plant (1) for converting plastic parisons (10) into plastic containers (20), comprising transport means (2) for transporting plastic parisons (10) along a predetermined transport path (P), and in a fixed manner At least one transfer station (4) arranged along the transport path (P), wherein the transfer station has blow molds (12) which can be opened and closed, the blow molds in the closed state are forming cavities, plastic parisons (10 ) can be converted into a plastic container (20) inside the chamber by applying a gaseous medium, the conversion station has a closing unit (6) for closing the blow mold (12), the closing unit (6) has a blow mold (12 ) of at least one part (12a) that can move relative to another part (12b) of the blow mold (12), wherein the transfer station (4) also has features that can be applied to plastic parisons and / or Or the area of ​​the blow mold to facilitate the application of the gaseous medium to the plastic parison (10) of the application device (42). The device to be protected also includes a valve unit (40) controlling the delivery of the gaseous medium to be delivered to the plastic parison (10). According to the invention, the closing unit (6) has a wall (30) which surrounds the blow mold (12) at least partially in the circumferential direction, and the valve unit (40) is arranged inside the wall (30).

Description

technical field [0001] The invention relates to a plant for processing plastic preforms, in particular to a plant for producing plastic bottles. Such devices are already known in the prior art. In this case, it is known in particular that all plastic parisons are heated and then converted or blow-molded in blow molding machines to form containers. Such blow molding machines are usually rotary machines with a number of changeover stations arranged on a rotatable carrier. Background technique [0002] Furthermore, stationary blow molding machines are known from the prior art, to which the plastic parisons are supplied for expansion and in which the plastic parisons are blown in a stationary state. Blow molding. The simple construction using a small number of transfer points known in the prior art enables a continuous process sequence and thus a high output when using rotary machines. In also known linear machines, in particular linear machines arranged in a stationary mann...

AI Technical Summary

Problems solved by technology

In this case, however, the disadvantage is that the spacing of the plastic parisons in the oven is fixed rather than variable

Also, a pitch delay from the chain pitch in the oven to the die pitch in the closing unit has to be done (usually by manipulating the system)

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