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1. WO2007140575 - PISTON AND VALVE STEM ASSEMBLY FOR A HOT RUNNER

Publication Number WO/2007/140575
Publication Date 13.12.2007
International Application No. PCT/CA2007/000853
International Filing Date 11.05.2007
Chapter 2 Demand Filed 14.12.2007
IPC
B29C 45/18 2006.01
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
18Feeding the material into the injection moulding apparatus
B29C 45/20 2006.01
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
CPC
B29C 45/2806
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
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
Applicants
  • HUSKY INJECTION MOLDING SYSTEMS LTD. [CA]/[CA] (AllExceptUS)
Inventors
  • JENKO, Edward Joseph
Agents
  • HUSKY INTELLECTUAL PROPERTY SERVICES
Priority Data
11/449,09308.06.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PISTON AND VALVE STEM ASSEMBLY FOR A HOT RUNNER
(FR) ENSEMBLE PISTON ET TIGE D'OBTURATEUR POUR CANAL CHAUFFÉ
Abstract
(EN)
A unified monolithic piston/valve stem structure for a gated-valve type injection molding hot runner. The piston/valve stem structure includes a piston and a valve stem that are joined to each other in a non-threaded manner without the need for any preformed securing devices formed separately from the piston and valve stem.
(FR)
L'invention concerne une structure unifiée monolithique constituée d'un piston et d'une tige d'obturateur pour un canal chauffé de moulage par injection à obturateur. La structure constituée du piston et de la tige d'obturateur comprend un piston et une tige d'obturateur joints sans l'aide d'un filetage et ne nécessitant pas un mécanisme préformé de fixation fabriqué séparément du piston et de la tige d'obturateur.
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