Abstract:
The present invention relates to a phase shifting debarker comprising crank arm mechanisms. The shifting debarker comprises a phase shifting mechanism powered by a main motor and connected to an operative assembly by the mean of timing belts. The main motor is configured to control, by means of a belt, the movement of the phase shifting mechanism which is adapted to control the movement of the operative assembly by means of the timing belts. The operative assembly generally comprises an actuator ring and a main ring. The activation of the shifting mechanism creates a shift phase between the actuator ring and the main ring while rotating at the same speed. The shift phase creates pressure from the rings to a crank arm mechanism, the crank arm mechanism transmitting said pressure to a pressure control system that finally transmits it to the operative assembly arms for debarking.
Abstract:
In various embodiments, a feeding device may comprise a support having feed cylinders arranged in a free end of a respective supporting arm and driven in rotation, wherein the supporting arms in a supported end are journalled in the support on shafts extending in parallel with each other and are pivotable about the shafts between a home position and a pivoted work position, and wherein the supporting arms are mutually connected to each other via a system of articulated links and by means of the links are forced to pivot jointly about their respective shafts, and a movement damping element, which is separate from the support, is integrated in the system of links and independently from the support configured to brake the return movement of the supporting arms from the pivoted position.
Abstract:
An arcuate debarking tool for ring rotor debarking machines used in timber processing. The tool comprises an elongated, arcuate body having an outer end that removably mounts a cutting element, and an inner arbored end adapted to be coupled through a mandrel shaft or the like to a ring rotor. A curved, thread-like leading edge first contacts logs that are transmitted axially through the revolving apparatus, and deflects the tools radially outwardly until the log is surrounded by the revolving ring of debarking tools. A companion, spaced apart exit edge is angularly defined in the frame. It functions in a thread-like manner to slowly unengage the rotating tools from the longitudinally traveling, debarked log. The curved exiting edge threadably revolves about the log circumference and slowly transfers the only remaining contact point between the withdrawing log and the revolving tool to an inward position whereby the tool is slowly, rather than suddenly, allowed to radially retract.
Abstract:
On usine la barre, selon un profil longitudinal et/ou circonférentiel souhaité, par des outils rotatifs (3) portés par un plateau principal (5) entraîné en rotation sur le châssis (20), les outils étant liés au plateau par des supports d'outils (4) mobiles radialement sur ce plateau, et on commande, en fonction dudit profil souhaité, un déplacement radial des supports d'outils en fonction de la position axiale de la barre par rapport au châssis et/ou de la position circonférentielle des outils par rapport à la barre. Pour commander ledit déplacement radial, on entraîne en rotation, coaxialement au plateau principal (5), un plateau secondaire (6) comportant des moyens d' actionnement (42) des supports d'outils (4), agencés de manière que la position des supports d'outils soit fonction de la position angulaire relative entre le plateau principal et le plateau secondaire et, pour ajuster le positionnement radial des outils en permanence lors de la rotation du plateau principal (5), on modifie ladite position angulaire relative.