an improved process of stacking parts comprising thermoplastic plastic in an intermediate - storage cage , and the further transport of the stacks to subsequent devices . a pivotable stacking cage effects the transfer of the stacks onto a transverse conveyor belt , or directly to finishing devices , with the parts selectively standing up or lying down , so the apparatus is suited for both flat and tall parts . the method can be used with high cycle numbers , and allows for the mounting of devices that reliably prevent the parts from drifting apart in the intermediate - storage cage , which is particularly advantageous for flat parts .