Layer palletizing method

Abstract

This invention relates to a method of palletizing a variety of goods by layers and a device therefor. Goods are formed in a unit load by palletizing them layer by layer in the order of layer area dimensions from the bottom with due consideration to layer area dimensions of goods, dimensions of void spaces which are not occupied with goods, and the dimensional relation among goods so that the palletized goods will not collapse during transportation. A good may fall into the void on the layer below or project beyond the edge of a lower layer to disturb the equilibrium. The palletizing method according to this invention facilitates handling of easily collapsible cases such as corrugated fiberboard boxes in a unit load by pressing at least the two sides of one layer of goods, releasing the pressure and then pressing and holding the same again. This invention method is characterized by palletizing layers of goods in a unit load which has at least one side surface substantially vertical to the bottom surface so that the unit load can be consolidated in the horizontal direction simply but securely by an automatic strapping machine for preventing collapse in transportation. In order to achieve such objects, this invention includes a palletizing device having a mechanism of holding one layer of goods having a good pressing device, a controller for pressing with said goods pressing device, a controller for controlling the order of palletizing, a centering mechanism which registers said holding mechanism with the center of a good layer, a detector which determines the position for suspending a truck so as to align the sides of layers uniformly, and a lifter for unit load which moves a unit load up and down in respect of said holding mechanism.