| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a tire molding mold by using a precision casting method which can simply, efficiently, and inexpensively produce the mold capable of molding a tire having a prescribed surface shape, by removing an excess part without damaging the surface shape of the product of a roughly molding part mold. SOLUTION: In the method for producing the tire molding mold, a casting mold 1 having channels 2 and 3 in the surface is formed, a plate-shaped member 4 is set in a prescribed place of an area 9' corresponding to the excess part of the roughly molding part mold 5 formed as the reversed mold of the casting mold 1 of the channel 2, the casting mold 1 is enclosed by a casting frame with the member 4 set in the channel 2 of the mold 1, molten metal is cast between the mold 1 and the frame so that the member 4 is wrapped by the mold 5, the member 4 is extracted after the molten metal is hardened, and the mold 5 having a projection 6 of the reversed shape of the channel 2 divided into the product 10 and the excess part 9 by a slit of the reversed shape of the member 4 formed after the extraction. COPYRIGHT: (C)2003,JPO |
