The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2022
Filed:
Jul. 03, 2017
S.i.p.a. Societa' Industrializzazione Progettazione E Automazione S.p.a., Vittorio Veneto, IT;
Matteo Zoppas, Conegliano, IT;
Alberto Armellin, Vittorio Veneto, IT;
Michele Varaschin, Vittorio Veneto, IT;
Giancarlo Besa, Orsago, IT;
S.I.P.A. SOCIETA' INDUSTRIALIZZAZIONE PROGETTAZIONE E AUTOMAZIONE S.P.A., Vittorio Veneto, IT;
Abstract
A method for increasing the injection speed of a melted plastic injection device for injecting said melted plastic into a molding cavity (), said injection device comprising a first cylinder () provided with a tubular casing () defining a first inner diameter d, and a first piston () slidable inside said tubular casing (), adapted to be loaded with melted plastic and to inject said melted plastic toward the molding cavity (); a second cylinder () constrained to the first cylinder () and provided with a second piston () which rod () is connected to the first piston () and is adapted to actuate said first cylinder () during an injection operation; the method comprising the steps of: —releasing second cylinder () and first cylinder () by extracting the first piston () from the tubular casing (); —coaxially inserting a tubular body (), defining a second inner diameter dwhich is smaller than the first inner diameter d, into the tubular casing (); —disconnecting the first piston () from the rod (); —connecting a third piston () to the rod (), said third piston () being sized to slide inside said tubular body (); —constraining second cylinder () and first cylinder () by inserting the third piston () into the tubular casing ().