Bale breaker for extracting fibre from compressed bales - comprising pressure rollers having sensors which generate upwards signal for extn. unit

摘要

The bale breaker, to extract fibre flocking from compressed bales, has pressure rollers which act as monitors (1,2) which move vertically by a given amount, with sensors (14) which generate an upwards signal for the extn. unit (5) when the rollers are displaced by a given amount and, at the same time, an advance redn. signal. The height adjustment for the extraction unit ends as soon as the leading roller (1) in the advance direction is moved from a signal generating position. A second sensor system (16) monitors the rotation of the rollers (1,2) and, when both rollers (1,2) are still, generates a downwards signal for the extn. unit (5). The sensor (14) has a switch for the uppermost lifting position to trigger an upwards signal for accelerated upwards movement, and a second switch which, after a given lifting movement triggers a signal for a creeping upwards movement up to the top position. ADVANTAGE - The mechanism compensates for different bale heights, with immediate reaction to a different material level, without requiring a computer program for control.