PROCESS AND DEVICE FOR INCREASING YIELD AND IMPROVING QUALITY OF PLANE-CUT VENEERS

摘要

The invention relates to a process and a device for making broad aesthetic veneers from the high-quality wood, while avoiding the log core zone. According to the invention, the process consists in that, after the thermal treatment, the log is shaped in two prism-like log halves () which are led by some conveyors to the veneer plane-cutting machine where the log half () is fixed onto the table () of the vertical plane cutting machine, driven into a reciprocating straight motion at a cutting rate Vt, the half log () being fixed on a prism-shaped device () of triangular base by means of suction valves, the inclination angle of the sitting surface as compared with the vertical plane being in the range of 25...30°, the value being so selected that the angle between the direction of the cutting vector and the direction of the medullary rays cannot be lower than 25...30°, the veneer being cut by means of the cutting assembly () consisting of a cutting blade and the pressing bar fixed onto the support () which performs an intermittent feed motion until reaching the prism support, at this moment the cutting being stopped, the prism-shaped device () being rotated by 180° and the veneer cutting being continued until the rest () of the cutting blade, in a prism shape, reaches the minimum dimension. The device, as claimed by the invention, consists of a table () with a prism-shaped device () fixing the log half (), some bark blazers () for the log additional fixing and a support () on which the cutting assembly () comprising a cutting blade and a pressing bar is mounted.