| 摘要 |
1,097,439. Roller conveyers; mechanical storage apparatus. HARTMAN METAL FABRICATORS Inc. Sept. 29, 1966 [March 11, 1966], No. 43514/66. Headings B8A and B8E. A roller conveyer 24 having reversible drive includes a switch 137 operable by a roller 135 when the roller is engaged by a pallet fed on to the conveyer. A motor (46, Fig. 2, not shown) which drives the seven leftmost rollers 45 of the conveyer is thus energized and the pallet moves towards a bar 88 which is pivotally supported on arms 87 and which is actuated by a cylinder 93. A pallet orienting or " squaring " plate 63 is pivoted at one end 62 and is movable at its other end by a cylinder 78. As the pallet advances, its leading edge engages the plate 63 and the pallet may be shifted out of parallel with the bar 88. Since the drive rollers 45 continue to rotate, the pallet is moved into parallelism with the bar 88 and a follower 107 which controls a switch 110, is pushed to the left through an opening 108 in the bar. The switch open-circuits the motor (46) and drive to the rollers 45 is interrupted. The switch 110 also causes the cylinders 78, 93 to be moved to exhaust positions to allow the plate 63 to pivot clockwise and the bar 88 to swing away from the leading edge of the " squared " pallet. A forklift mechanism (not shown) may now be inserted through recesses 200 to transfer the pallet to a stacker 22, Fig. 1. When placing a pallet on the left-hand end of the conveyer, a switch 126 is operated by a roller 119 and the motor (46) is energized in a direction such as to cause the rollers 45 to convey the pallet toward the other end of the conveyer. Automated stacker, Fig. 1. Each of two storage racks 20 is provided with a conveyer 24 as above, and a stacker 22 having a forklift mechanism automatically stacks or unstacks pallets which are fed to or discharged from the conveyers 24. |
