Presses – Automatic or material triggered control – Of actuating means
Patent
1998-12-22
2000-05-02
Vo, Peter
Presses
Automatic or material triggered control
Of actuating means
100 51, 100 99, 100 50, 100229A, B30B 1516
Patent
active
060559020
ABSTRACT:
There is disclosed compaction apparatus for waste management and recycling purposes including a hydraulic cylinder driven ram capable of exerting very large forces to compact waste paper, trash, or similar commercial or residential waste material. The hydraulic system of the apparatus includes a pump powered by a large electric motor. Forward and reverse motion of the ram is controlled by solenoid valves controlled by limit switches or position sensing switches responding to ram position, and in some cases to time delay devices coordinated with the travel time of the ram. Means for sensing a high resistive force encountered by the ram indicates that a waste container is full or nearly full or in certain apparatus may indicate a need to reverse a baler ram to a rest position to receive more waste material. A motor current sensor is used for indirectly determining when the resistive force on the ram reaches a set value and includes a current level adjustment and an adjustable delay setting so that no responsive action occurs in the apparatus for high currents lasting less than 1 second or other preset time value. Accordingly, high currents on motor starting and also momentary high currents in trash compaction do not give false signals indicating fullness of a container or other false indication. The control logic is simple and is executed by relays which may be electromechanical or solid-state.
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Davis James
Harrop Shannon
Huynh Louis K.
J. V. Manufacturing, Inc.
Keegan Robert R.
Vo Peter
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