| 摘要 |
<p>PURPOSE:To dispense with the setup of a special stack for error correction as well as to perform delivery work in a short time, by replacing a load of its stack to a recess stack for a pair of empty stacks infallibly emptied when a front stack is occupied and the load is delivered out of the recess stack. CONSTITUTION:When a load to be delivered is situated in a recess stack 1b and another load occupies the front stack 1a, first the load (a) on the front stack 1a is loaded on the recess stack 1b for a pair of empty stacks. Next, a load (b) to be delivered is taken out of the recess stack 1b, and delivery work takes palce. And, a pair of stacks delivered out of the recess stack is stored as a pair of empty stacks. As in the abovementioned, the load (a) replaced because of being situated in the front stack 1a is loaded on the recess stack 1b. Therefore, the load (a) on the recess stack 1b loaded by replacement is taken out only at the time of delivery without being replaced again. A newly stocked load is load on the front stack 1a in front of the recess stack 1b of this replaced load (a).</p> |
