METALLIC MOLD

• Main Authors: OTAKE KIYOSHI, FUNAI MASAHIDE, SUGIURA MITSUO
• Format: Patent
• Language: English
• Published: 03.02.1998
• Edition: 6
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

PROBLEM TO BE SOLVED: To easily execute the positioning of a coating sheet and to obtain tension having good balance corresponding to the elongation and the strain stress of a coating sheet material by interposing both end parts of the coating sheet material between a fixed member arranged at both sides of a metallic mold and both side parts of the metallic mold and holding it. SOLUTION: After inserting the coating sheet material 3 into the metallic mold body K, the metallic mold body K and the coating sheet material 3 are fitted to the fixed member 4, and the fixed member 4 is fixed to the metallic mold body K with a fixed means of vis, etc. Both end parts 3a, 3a of the coating sheet material 3 are interposed between both side wall surfaces 4a, 4a of the fixed member 4 and both side wall surfaces KA, KB of the metallic body K. Successively, a blank is laid on the upper surface of the metallic mold body K and pressed with a punch and after executing simple bending to the blank, plastic bending, slip-deformation and correcting forming completion are executed in order. The contact surface of the coating sheet material 3 is formed with a material excellent in the lubricity, and since slipping friction is generated between the metallic mold body K and the coating sheet material 3, the flaw is not developed on the blank surface and a grinding process for removing the flaw can be omitted.