TAKE-UP REEL, VENEER REELING APPARATUS, TAPE FEEDING UNIT FOR VENEER ROLL, VENEER ROLL UNWINDING APPARATUS AND A PRODUCTION METHOD FOR LAMINATED WOOD

摘要

A TAKE-UP REEL (7) HAS A DIAMETER EQUAL TO OR MORE THAN 85 TIMES A THICKNESS OF A VENEER SHEET (1) WOUND THEREON AND EQUAL TO OR MORE THAN 300 MM SO AS TO BE OF A CURVATURE OF THE TAKE-UP REEL TO REDUCE CRACKING IN PARALLEL TO FIBER ORIENTATIONS THAT OCCURS IN WINDING A VENEER SHEET AFTER DRYING ON A WINDING SURFACE OF THE TAKE-UP REEL. A VENEER REELING APPARATUS COMPRISES: A TAKE-UP REEL (7) DISPOSED IN A VENEER SHEET REELING POSITION IN A ROTATABLE MANNER; A DRIVE ROLLER (6) DISPOSED ON THE LOWER SURFACE OF THE TAKE-UP REEL, TRANSMITTING A DRIVING FORCE WITH A VARIABLE SPEED; A VENEER DRYER (2) DISPOSED UPSTREAM FROM THE VENEER SHEET REELING POSITION; A CONVEYOR (4) PROVIDED BETWEEN THE TERMINAL END OF THE VENEER DRYER AND THE DRIVE ROLLER IN THE VENEER SHEET REELING POSITION; AND A PLURALITY OF THREAD FEEDING MECHANISMS (10) DISPOSED AT ARBITRARY SPATIAL INTERVALS ALONG A LENGTH DIRECTION OF THE TAKE-UP REEL (7) FOR A VENEER SHEET, WHEREIN A CONTINUOUS DRIED VENEER SHEET OR DRIED VENEER SHEETS WHOSE SIZES ARE OF A CONSTANT LENGTH OR OF A LENGTH AT RANDOM ARE WOUND ON THE TAKE-UP REEL TO FORM A VENEER ROLL (9) WITH THREADS AS GUIDE BY A FRICTIONAL FORCE OF THE DRIVE ROLLER. FURTHER, PAIRS OF TWO OVERLAPPING VENEER SHEETS OR SETS OF A PAIR OF TWO OVERLAPPING VENEER SHEETS AND A SINGLE VENEER SHEET CAN BE WOUND ON THE TAKEUP REEL IN A COMPOSITE FORM.