Concrete block molding machine having continuously driven...

Details Concrete block molding machine having continuously driven... Concrete block molding machine having continuously driven...

B - Operations, Transporting

28

B

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B28B 1/08 (2006.01) B06B 1/16 (2006.01) B28B 1/087 (2006.01) B28B 3/06 (2006.01)

Patent

CA 1321467

CONCRETE BLOCK MOLDING MACHINE HAVING CONTINUOUSLY DRIVEN VIBRATING SHAFT MECHANISM WHICH CAN BE PROGRAMMABLY VIBRATED AND METHOD OF PROGRAMMABLY VIBRATING SUCH MACHINES ABSTRACT OF THE DISCLOSURE 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 assembly mounts an eccentric fixed portion and a circumferentially adjustable balancing mass. The shaft assembly has a cylinder with a piston therein, connected to the mass to produce rotary motion of the mass relative to the fixed eccentric portion. A spring of predetermined rate opposes this. The pressure of the fluid introduced is varied to change the amplitude of the vibration imparted during each cycle.

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