Veneer assembly device and veneer assembling method using the same

A veneer assembly device comprising:

• a sliding extendable roller conveyor including a fixed conveyor and a movable conveyor for conveying a veneer that has been glued to a veneer stopping position corresponding to a position above a predetermined assembling position,
• the sliding extendable roller conveyor being alternatively switchable between an extended state in which the movable conveyor is advanced so as to be pushed out from an inside to an outside of the fixed conveyor and a contracted state in which the movable conveyor is retracted so as to be pulled from the outside to the inside of the fixed conveyor,
• the movable conveyor being provided, in its front portion, with a guiding roller disposed so as to be inclined toward one lateral side at a predetermined angle with respect to a width direction orthogonal to a longitudinal direction of the movable conveyor such that a leading end of the veneer is guided toward the one lateral side as a reference surface in the longitudinal direction of the movable conveyor,
• the veneer assembly device further comprising:
• veneer detecting means which detects the veneer reaching the veneer stopping position with a leading-side edge of the veneer being brought into contact with a predetermined stopper member;
• roller control means which drives each driving roller of the fixed conveyor and the movable conveyor to rotate forward such that the veneer is conveyed to the veneer stopping position;
• and
• slide movement control means which controls slide movement of the movable conveyor,
• wherein the roller control means drives each driving roller of the fixed conveyor and the movable conveyor to rotate forward such that the veneer is continuously conveyed from the fixed conveyor onto the movable conveyor in the extended state of the sliding extendable roller conveyor,
• wherein, when the veneer is detected by the veneer detecting means, the slide movement control means retracts the movable conveyor in the extended state, in a contracting direction in a state in which forward rotational driving of the driving roller of the movable conveyor is maintained by the roller control means, the veneer receives moment of force in a direction to move a rear end of the veneer toward the one lateral side of the movable conveyor with a contact portion of the veneer with the stopper member as a rotational fulcrum by a driving force based on the forward rotational driving of the driving roller of the movable conveyor which is retracting, and the veneer is drawn such that a longitudinal edge runs along the one lateral side of the movable conveyor and the veneer naturally drops from the veneer stopping position to the assembling position in a state in which the leading-side edge is positioned by the stopper member and the longitudinal edge is positioned by the one lateral side of the movable conveyor.