. Automatic produce-bagging machine that uses factory-roll polyethylene net tubing. Fruit, Packaging; Polyethylene; Agriculture. for catching in the staple (or whatever closing means may be used) could allow the use of a microswitch, a simpler and less expensive con- trol than a photoelectric cell. Ejection Chute A chute tilts progressively as the transfer belts move the bag toward the stapling mechan- ism, reaching the fully tilted position (57°) as stapling is completed. The bag drops clear of the closing mechanism and slides down the chute and onto a conveyor belt. The chute returns to a ne
. Automatic produce-bagging machine that uses factory-roll polyethylene net tubing. Fruit, Packaging; Polyethylene; Agriculture. for catching in the staple (or whatever closing means may be used) could allow the use of a microswitch, a simpler and less expensive con- trol than a photoelectric cell. Ejection Chute A chute tilts progressively as the transfer belts move the bag toward the stapling mechan- ism, reaching the fully tilted position (57°) as stapling is completed. The bag drops clear of the closing mechanism and slides down the chute and onto a conveyor belt. The chute returns to a near-horizontal position (17°) after the grip- ping head has traveled to the top position with the bag held open ready for filling and after the bottom cutting and closing action has been com- pleted. The inside end of the fully tilted chute must clear the vertical travel of the gripping head. As filling starts, the fruit flowing into the bag causes the bottom of the bag to flip onto the inside end of the chute, which provides support as filling progresses (figs. 7 and 10). A hinged retarder flap near the inside end of the chute prevents movement of the bag bottom when fruit falls into the bag and thus prevents undesirable elongation and lateral construction of the bag. The retarder flap is operated by a separate, small air cylinder, and as the chute moves toward the inclined position for discharg- ing the filled bag, the flap drops down to make a smooth surface (figs. 1D-F and 10). Automatic Action Controls Except for the previously discussed photo- electric and microswitch controls, timing and se- quencing of the actions in the cycle are accom- plished by a high-torque, synchronous motor- driven, single-cycle, multicam timer. The single- cycle, rather than continuous, cam timer pro- vides a relatively simple way to connect the ma- chine with the count-fill unit to obtain automatic operation. A pulse from the count-fill unit starts the timer when the preset number of fruit has
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectagriculture
