US 2003/0198707 A1 · Apparatus for pressure molding articles made of plastics, such as caps for closing a container and the like

Abstract

An apparatus for compression molding plastic articles, comprising at least one molding unit composed of an upper punch and a lower mold provided with a cavity for molding the articles, the punch and mold being aligned with each other and movable between a spaced position and a closer positions, feeders for feeding doses of plastic material to be molded, comprising at least one removal element for removing, in succession, individual doses from an extruder and depositing a removed dose in the molding cavity of the mold when it is spaced from the respective punch, supporting elements for temporarily supporting said dose above the molding cavity, associated with the mold, and actuators for actuating the supporting elements so as to release a dose into the cavity before compression start.

Claims12

Dependent claims

An apparatus for compression molding plastic articles, comprising:

at least one molding unit composed of an upper punch and a lower mold provided with a cavity for molding the articles, said punch and said mold being aligned with each other and movable between a spaced position and a closer position;
feeding means for feeding doses of plastic material to be molded, which comprise at least one removal element for removing, in succession, individual doses from an extruder and depositing a removed dose in the molding cavity, of said mold when said mold is spaced from the respective punch;
supporting means for temporarily supporting said dose above said molding cavity which are associated with said mold;
and actuation means for actuating said supporting means so as to release said dose into said cavity before said punch-and said mold start compression.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

10/414,081Filed 16 Apr 2003

Priority

IT BO2002A00022623 Apr 2002

Published

23 Oct 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

B29C 31/048
Using dispensing heads, e.g. extruders, placed over or apart from the moulds: the material being severed at the dispensing head exit, e.g. as…
B29C 43/34
Component parts, details or accessories; Auxiliary operations: feeding the material to the mould or the compression means
B29C 37/0032
In-mould coating, e.g. by introducing the coating material into the mould after forming the article: the coating being applied upon the mould…
B29C 43/08
Continuously movable in one direction, e.g. mounted on chains, belts: with circular movement , e.g. mounted on rolls, turntables

Apparatus for pressure molding articles made of plastics, such as caps for closing a container and the like

Life of this patent

Apparatus for pressure molding articles made of plastics, such as caps for closing a container and the like

Life of this patent

Abstract

Claims12