Layer Spread Stacker

Product description

The patented Layer Spread Stacker is used to build packets for the following drying process. An automatic sticker with robotic arms inserts dry sticks between the timber layers. The timber pieces are placed in turns to the left and right in the layer so that the same packet length can be achieved regardless of dimensions. The same packet length is an advantage as the kilns, in the following process, can thus be optimally filled and give as favourable conditions as possible for drying. The sticks are placed in rows at right angles to the lumber pieces in rows above each other which is important for the stability in the package.


  • Patented solution
  • Stable packets
  • Stickers directly above one another
  • Same packet lengths with double end-levelling
  • Highest capacity on the market
  • Robust construction
  • Newly-developed technology
  • Creates optimal conditions for the following drying process

Function description

The Layer Sticker Stacker consists of different machinery units combined as follows:

A layer of lumber arrives on the stacker via an elevator section, or directly from a flat bin, which capacity-wise is a clear advantage. The lumber layer is end-levelled prior to the operator's station where the operator monitors and ensures that the lumber lies in one layer towards the layer punch. The purpose of the layer punch is to create a distance between the lumber layers by holding onto and releasing layers at predetermined intervals. The intermediate spaces are needed to enable a layer to be lowered before the next layer is laid out, and for the structure of the packet build. Within the layer it is decided, for example, that the first lumber piece within each layer shall always lie to the left.

After having built the layer up it is released onwards to the layer distribution, where it is fed out onto a low-level or high-level carrier. The chain conveyor's chain is fitted with carriers at two levels. At the following roller station the timber pieces are forwarded on the lower carriers over to the opposite side to be end-levelled against a stop-screen.

The layer is subsequently fed out onto a layer build-up conveyor to adjust its length to the stick packet's width, and is thereafter forwarded out on the stacker forks. There are two sets of stacker forks that alternately insert layers. When the one set of stacker forks is on its way back the other set is simultaneously on its way out with the next layer. In order to be able to simultaneously lay out sticks on the layer, and so that they will not collide with the stick layering in a subsequent layer, robotic layering forks are used. Each of these in turn fetch their sticks and lay them on the packet's uppermost layer.


Capacity: Max. 20 layers /minute (depending on dimensions)
Package width:  Up to 2 m
Operation:  Electric servo, shaft mounted gear motor drive and pneumatics
Product number:   Roller station 2924
Layer feeder 2905
End-levelling section 2906
Stapling section, Layer Spreader Stacker 2907
Packet elevator 2915
Automatic sticker 2846

Download the product page as PDF