. Automatic produce-bagging machine that uses factory-roll polyethylene net tubing. Fruit, Packaging; Polyethylene; Agriculture. Figure 12.—Bottom-closing stapler head. (1) Gather- ing arm and microswitch on top of the specially- made V-shaped guide notch. (2) Knife on bottom surface. Top-Closing Mechanism Transferring the filled bag from the grip- ping head into a closing mechanism, obtaining consistently satisfactory closure, and discharg- ing the filled bag from the machine were the most complex series of actions to incorporate into a working mechanism. A commercially made air stapler ident
. Automatic produce-bagging machine that uses factory-roll polyethylene net tubing. Fruit, Packaging; Polyethylene; Agriculture. Figure 12.—Bottom-closing stapler head. (1) Gather- ing arm and microswitch on top of the specially- made V-shaped guide notch. (2) Knife on bottom surface. Top-Closing Mechanism Transferring the filled bag from the grip- ping head into a closing mechanism, obtaining consistently satisfactory closure, and discharg- ing the filled bag from the machine were the most complex series of actions to incorporate into a working mechanism. A commercially made air stapler identical to the one used in the bottom- closing mechanism, but mounted in a fixed po- sition, is used as a basic component in the top- closing mechanism. In addition, the mechanism consists of transfer belts, a gathering arm to push the material into the stapler notch, a photo- electric cell control, and resistance wires (figs. 7, 11, and 13). When the preset number of fruit are in the bag, a pulse from the count-fill device causes the transfer belts to swing together, pressing the net material between them and moving the two re- sistance wires into contact with the material at each side. They then transfer the bag top from the gripping head into the stapler (fig. 1D-F). The gathering arm is triggered by the photoelec- tric cell responding to the passing of the bag. The movement of the gathering arm actuates the mi- croswitch that operates the stapler (fig. 13). Although the gripping fingers are released when movement of the transfer belts starts, the resistance wires melt the net material just below the gripping fingers, thereby preventing the bag from hanging on the fingers and hampering ac- tion of the transfer belts. Transfer belts of more rugged construction and more powerful gripping action might pull free material hanging on the gripping fingers after they are released, thereby eliminating the need for the hot wires. Some difficulties in the top-closing mechan- ism were th
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectagriculture
