Injection-Compression Apparatus for Manufacturing Thermoplastic Containers

摘要

An injection-compression plant for manufacturing PET performs comprises an extruder (1) to produce a melted resin, a distribution joint (3) for distributing the melted resin from the extruder (1) towards the injection-compression molds (9′, 9″, 9″), gathered in modular groups of three on supporting frames (21) arranged about the peripheral surface of the rotary carousel (2). The joint (3) allows to transfer the fluid thermoplastic resin from the stationary channel (10) of the extruder (1) to the lateral feeding conduit (27) of each molding module (9), said lateral feeding conduit being rotating with the carousel (2). The injection-compression molds (9′, 9″, 9″) have the two half-molds forming the molding cavity (41′, 41″, 41′″) connected by means of bayonet couplings to the frame (21). The molded preforms are extracted from the carousel (2) by means of a wheel (50), which transfers them to an air cooling device (51).

主权项

1. An injection-compression apparatus for manufacturing thermoplastic containers P, in particular PET preforms, having a vertical rotation axis Y, comprising
a fixed supporting base, a rotating carousel, rotating about the vertical rotation axis Y with respect to the fixed supporting base, a plurality of injection-compression molds of the containers P arranged along a periphery of the rotating carousel, said plurality of injection-compression molds being gathered together into molding modules of at least two injection-compression molds each, a distribution device connecting the fixed supporting base to the rotating carousel so as to allow melted thermoplastic to be conveyed, comprising a passage channel, fixed and coaxial to the vertical rotation axis Y, adapted to be connected from an inlet thereof to an extruder and from an outlet thereof to at least one lateral feeding conduit of a respective molding module, said at least one lateral feeding conduit being rotating along with the rotating carousel.