Global Patent Index - EP 1113892 A1

EP 1113892 A1 20010711 - INJECTION UNIT FOR A PRESSURE DIE CASTING MACHINE

Title (en)

INJECTION UNIT FOR A PRESSURE DIE CASTING MACHINE

Title (de)

EINPRESSAGGREGAT FÜR EINE DRUCKGIESSMASCHINE

Title (fr)

ENSEMBLE D'INJECTION POUR MACHINE DE COULEE SOUS PRESSION

Publication

EP 1113892 A1 20010711 (DE)

Application

EP 00943750 A 20000531

Priority

  • EP 0004977 W 20000531
  • EP 99109360 A 19990601

Abstract (en)

[origin: EP1057560A1] Disclosed is an injection unit for a hot-chamber pressure die casting machine, providing an electromechanical drive for the plunger. A spring element (16) in the form of a plastic component or a hydraulic spring is inserted in between the plunger and the connecting rod (9) in order to absorb the moments of inertia which occur when the plunger drive mechanism is shifted from the phase in which the mould is filled to a pressure dwelling phase. Said spring element is compressed by the additional travel of the connecting rod after the motor is decelerated. The extent of said compression can be selected in such a way that the resulting axial force which is exerted upon the plastic component or hydraulic spring suffices to create the desired pressure dwell in the melt.

IPC 1-7

B22D 17/20; B22D 17/32

IPC 8 full level

B22D 17/02 (2006.01); B22D 17/20 (2006.01); B22D 17/04 (2006.01); B22D 17/32 (2006.01)

CPC (source: EP US)

B22D 17/2015 (2013.01 - EP US); B22D 17/32 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1057560 A1 20001206; AT 332778 T 20060815; CZ 2001418 A3 20010516; CZ 300224 B6 20090325; DE 50013156 D1 20060824; EP 1113892 A1 20010711; EP 1113892 B1 20060712; ES 2267548 T3 20070316; HK 1035343 A1 20011123; JP 2003500219 A 20030107; JP 4558954 B2 20101006; PL 193801 B1 20070330; PL 345746 A1 20020102; US 6581670 B1 20030624; WO 0072998 A1 20001207

DOCDB simple family (application)

EP 99109360 A 19990601; AT 00943750 T 20000531; CZ 2001418 A 20000531; DE 50013156 T 20000531; EP 0004977 W 20000531; EP 00943750 A 20000531; ES 00943750 T 20000531; HK 01106202 D 20010903; JP 2000621098 A 20000531; PL 34574600 A 20000531; US 76204701 A 20010607