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1. CA2347023 - ACTUATOR FOR INJECTION MOLDING VALVE GATE

Office Canada
Application Number 2347023
Application Date 17.12.1999
Publication Number 2347023
Publication Date 29.06.2000
Grant Number
Grant Date 07.08.2007
Publication Kind C
IPC
B29C 45/23
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
20Injection nozzles
23Feed stopping equipment
CPC
B29C 45/281
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
26Moulds
27Sprue channels ; Runner channels or runner nozzles
28Closure devices therefor
2806consisting of needle valve systems
281Drive means therefor
B29C 2045/2831
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
26Moulds
27Sprue channels ; Runner channels or runner nozzles
28Closure devices therefor
2806consisting of needle valve systems
281Drive means therefor
2831Needle valves driven by a cam
Applicants D-M-E COMPANY
Inventors STEIL, FREDERICK G.
TORTIS, STEPHEN T.
Priority Data 09217295 21.12.1998 US
Title
(EN) ACTUATOR FOR INJECTION MOLDING VALVE GATE
(FR) ORGANE D'ACTIONNEMENT D'OBTURATEUR POUR MOULAGE PAR INJECTION
Abstract
(EN)
A valve (10) for controlling the flow of fluent plastic material from an injection molding machine to a mold cavity. The valve includes an axially slidable valve pin (38) that interacts with a material outlet (17) to control flow through the valve selectively. The valve pin is actuated by an eccentric cam arrangement (60) that positively drives the valve pin between positions where it is engaged with or disengaged from the material outlet. The cam acts on the valve pin only in an axial direction to avoid wear occasioned by side loads imposed on a valve pin.