The device consists of lifting platforms (2), which can operate batch-wise so that the upper pieces of a stack (1) are singled from the same level.
Via stationary lift and pushing elements (3) the pieces are accelerated into a combined vertical and horizontal movement and surrended to the running vacuum belt (4).
By a special system the vacuum in the releasing area is interrupted so that the pieces fall down.
The swords of the rotation elevator (5), which are kept steadily in horizontal position take over the pieces and release them onto the infeed roller conveyor (6) of the working line.
For the stacking system the single steps follow vice versa, i.e. from the outfeed conveyor the pieces are taken over by the rotation elevator lifted to a height of approx. 2,2 m and surrendered to the suction belt system.
The belt system transports the simple pieces above the lifting platforms where they are released in a controlled way.
The stack is built with exact vertical edges by the aligning in combination with the batch-wise lowering. Stacks with picture layers, i.e. with some parts in line and some parallel can be formed too.
According to customers demands an infeed and outfeed system for cover boards or pallets can be integrated.
