EP 0353661 A2 19900207 - Concrete block molding machine having continuously driven vibrating shaft mechanism which can be programmably vibrated and method of programmably vibrating such machines.
Title (en)
Concrete block molding machine having continuously driven vibrating shaft mechanism which can be programmably vibrated and method of programmably vibrating such machines.
Title (de)
Maschine zum Formen von Betonblöcken mit kontinuierlichem Drehantrieb einer programmierbar erregten Vibrationsvorrichtung sowie Verfahren zur programmierbaren Vibration solcher Maschinen.
Title (fr)
Machine de moulage de blocs en béton ayant un dispositif de vibration à arbre continuellement entraîné programmable et méthode pour programmer les vibrations dans de telles machines.
Publication
Application
Priority
US 22587788 A 19880801
Abstract (en)
A cement block molding machine has a vibratible mold box incorporating at least one molding cavity for a cement mixture which is to be densified in the cavity. A continuously driven shaft (15) assembly mounts an eccentric fixed portion and a circumferentially adjustable balancing mass. The shaft assembly (5) has a cylinder (c) with a piston (26) therein, connected to the mass (25a) to produce rotary motion of the mass (25a) relative to the fixed eccentric portion (18, 19). A spring (28) of predetermined rate opposes this. The pressure of the fluid introduced is varied to change the amplitude of the vibration imparted during each cycle.
IPC 1-7
IPC 8 full level
B28B 1/08 (2006.01); B06B 1/16 (2006.01); B28B 1/087 (2006.01)
CPC (source: EP)
B06B 1/162 (2013.01); B28B 1/0873 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0353661 A2 19900207; EP 0353661 A3 19901128; EP 0353661 B1 19930113; AU 3914589 A 19900201; AU 624401 B2 19920611; CA 1321467 C 19930824; DE 68904376 D1 19930225; DE 68904376 T2 19930506; JP 2683422 B2 19971126; JP H0280203 A 19900320; NZ 230092 A 19921125
DOCDB simple family (application)
EP 89114005 A 19890728; AU 3914589 A 19890801; CA 607120 A 19890731; DE 68904376 T 19890728; JP 19704089 A 19890731; NZ 23009289 A 19890726