SURFACE LAYER LAMELLA PRODUCTION

The sawn timber unstacking unit is used for unstacking and preparing the sawn timber for the bandsaw.

A forklift truck places one or more stacks of sawn timber on the feed-in chain conveyor, which also acts as a buffer. After positioning under the vacuum portal, the timber is unstacked layer by layer and placed on a chain conveyor. Any stacking strips are stripped and collected in a container.

The raw material can now be conveyed piece by piece through a curvature detection system, aligned optimally by a tilting fixture, and discarded if the curvature is too high.

Via an angle transfer unit, the separated boards pass longitudinally through a moisture measurement system and a metal detector. If they are found to be suitable, the boards are transferred to the planing machine, otherwise they are pushed out onto a deposit table.

The separated, inspected boards are drawn in by the planing machine and planed top and bottom to the set dimensions.

Ideally, the board can be conveyed freely again after the planing machine, before being fed to the bandsaw intake.

Depending on requirements, the SPEEDLINER bandsaw modules can be arranged in quantities of 1 to 6 which cut the sawn timber into the appropriate number of lamellae. Then the lamella pack is planed on the sides (joined) to remove chipping/cuttings and produce a gluable surface.

The cut and planed lamella pack is passed by an angle transfer unit to the high-speed separation unit. This consists of two suction units which alternately (tandem) lift the top lamella and lay it on conveyor tracks. From here, the lamellae are accelerated with the greatest possible care for the material by diagonally arranged acceleration units and transported to the brush unit.

In order to prevent excessive amounts of dust from escaping, the separation unit is enclosed and aspirated. The lamella then passes through a longitudinal brush unit which removes any dust and shavings so that the subsequent quality scanner can perform a reliable evaluation of the lamella.

The cleaned and classified lamellae are decelerated again by a conveyor running in the opposite direction and transported transversely to the sorting area.

An inclined elevator conveys the lamellae to the level appropriate for the quality, where a layer is formed.

Once the layer has passed through the level, it is conveyed by lift-conveyor to the removal area and fed to the stack handling unit, where lamella stacks are built sorted by quality. (It is also possible to apply stacking strips here.)

Once the desired stack height has been reached, the stack is transported out and made available to the forklift truck for removal.