MOLDING OF WOODEN BASE MATERIAL WITH PUNCHED-OUT HOLE AND MOLDING DIE FOR WOODEN BASE MATERIAL USING THIS MOLDING METHOD

• Main Authors: KATO MIKIHIKO, MIZUNO KAZUHISA, HAYAKAWA YASUSHI
• Format: Patent
• Language: English
• Published: 05.08.1997
• Edition: 6
• Subjects: MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUTORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTINGOF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL; PERFORMING OPERATIONS; PRESSES; PRESSES IN GENERAL; TRANSPORTING; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL

PROBLEM TO BE SOLVED: To provide a method for molding a wooden base material with a punched-out hole top be used forma high precision hole pouching operation which is performed simultaneously with a molding operation as well as a molding die for the wooden base material which is employed with the method. SOLUTION: In this base material molding method, a wooden base material is compressed between a recessed part provided on the face of one of a molding die and a cur punch provided on the other force, with the part of the wooden base material where the punching-out of a hole is desired, which is to be compressed with a stronger force than the other part and cured. Consequently, a high density layer with the peripheral edge continuously connected to the main body of a base material with a thin wall connecting part formed by the above process. In addition, the high density layer is removed after parting a molding die to obtain the wooden base material with a punched-out hole. For a molding die, the recessed part 3 for punching out a hole with a smaller depth than the thickness of finished product is firmed on the face of one of the paired force 1, 2, and the cut punch 4 which is slightly larger than the thickness of the finished product and has an edge approaching the open end of the recessed part 3 with out the contact between the force faces when the mold is closed, is provided on the face of the other force.