From logs to wood shavings with Log Shaver
USA, November 2022
In the final month’s of 2022 we delivered a complete log shaving line to make excellent wood shavings from logs.
The logs are placed on a chain conveyor by crane. On the chain conveyor the logs are buffered and transported further in the line. A stepfeeder and singulator create a flow in which each log is individually separated, spaced and aligned before being put on a belt conveyor. During the transport on the belt conveyor the logs are scanned to see if the size is correct and a metal detector checks for metal parts in the logs.
The approved logs are debarked and transported further to the log shaver where the logs are kicked into the two stationary infeed hoppers. The rejected logs are transported backwards and kicked in a reject bin.
The log shaver has two stationary infeed bunkers that also function as a buffer for the logs. Underneath the stationary infeed hoppers are specifically developed convertible cassettes with cutterheads. These ensure quality and continuity. The complete cassette can be replaced within a few minutes by another cassette with sharpened blades. In the meantime, the knives in the removed cassette are sharpened fully automatically so that this cassette is ready for use again. The log shaver has a capacity of 12,000 kg of wet wood shavings per hour.
The fresh wood shavings are fed out using a chain scraper and sceened in a star screen. The wood shavings are then buffered in a bunker and the sieved oversize pieces are exported separately.
Due to the precise blade adjustment, extremely voluminous wood shavings can be produced. These voluminous wood shavings only need half of the raw material (tree trunks) to reach the original scattering volume. By drying these wood shavings, a huge amount of energy can be saved compared to less voluminous wood shavings.
The combination of saving raw materials and saving energy is an enormous cost saving and it also benefits the environment.