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1. (WO1998051469) RAM SUPPORT SKATE FOR AN INJECTION MOLDING MACHINE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/051469 International Application No.: PCT/US1998/009736
Publication Date: 19.11.1998 International Filing Date: 13.05.1998
IPC:
B29C 45/17 (2006.01) ,B29C 45/67 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
64
Mould opening, closing or clamping devices
67
hydraulic
Applicants:
CINCINNATI MILACRON INC. [US/US]; 4701 Marburg Avenue Cincinnati, OH 45209, US (AllExceptUS)
JOYNER, Van, K. [US/US]; US (UsOnly)
HERTZER, Ronald, A. [US/US]; US (UsOnly)
VAN KEUREN, Frederick, F., III [US/US]; US (UsOnly)
Inventors:
JOYNER, Van, K.; US
HERTZER, Ronald, A.; US
VAN KEUREN, Frederick, F., III; US
Agent:
FRISKNEY, Stephen, H.; 4701 Marburg Avenue Cincinnati, OH 45209, US
Priority Data:
60/046,62716.05.1997US
Title (EN) RAM SUPPORT SKATE FOR AN INJECTION MOLDING MACHINE
(FR) ENSEMBLE SUPPORT DE BELIER POUR MACHINE A MOULER PAR INJECTION
Abstract:
(EN) A self-compensating support skate (46) for an annular hydraulic ram (15) mounted in the front stationary platen (10) of a 'two-platen' injection molding machine (1) is disclosed. The hydraulic ram (15) fits into a central bore (22) in the stationary platen (10) and connects directly to a relatively thin die platen (11) that provides a mold mounting surface. The purpose of the skate (46) is to prevent movement (tilting) of the die platen (11) and the resulting misalignment with the movable platen (20) when the mold (30) is attached. The skate (46) is adjusted during assembly to compensate for the tolerance stack-up in the ram assembly. The 'zero' clearance is maintained by disc springs (56) within the skate (46) that compensate for the expansions and contractions of the large diameter parts due to temperature variations. The die platen (11) is held in the aligned position by contact with the lower tie rods (7).
(FR) L'invention concerne un ensemble support auto-compensateur (46) destiné à un bélier hydraulique annulaire (15) monté sur le plateau fixe avant (10) d'une machine à mouler (1) par injection à deux plateaux. Le bélier hydraulique (15) est conçu pour venir se loger dans un alésage central (22) du plateau fixe (10) et est directement relié à un plateau matrice (11) relativement mince constituant une surface de montage du moule. Le rôle de l'ensemble (46) consiste à empêcher le mouvement (basculement) du plateau matrice (11) et le défaut d'alignement qui en résulte par rapport au plateau mobile (20) lorsque le moule (30) est fixé. L'ensemble (46) est réglé lors de l'assemblage pour compenser l'accumulation des tolérances dans l'ensemble bélier. Des ressorts à disques (56) disposés dans l'ensemble (46) permettent de maintenir un jeu nul, lesquels ressorts compensent les dilatations et les contractions des pièces de grand diamètre dues aux variations de température. Le plateau matrice (11) est maintenu aligné par contact avec les tiges (7) d'éjection inférieures.
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Designated States: BR, CA, JP, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0956187US6328553CA2291239