To provide a V-belt manufacturing method capable of vulcanizing an unvulcanized rubber after the air in the unvulcanized rubber is discharged forcibly and capable of manufacturing a V-belt in a good shape.
An unvulcanized rubber sheet, tensile ropes and the unvulcanized rubber sheet are laminated in this order to form a cylindrical unvulcanized molded body. This unvulcanized molded body is cut in round slices in a predetermined width and both side surfaces thereof are obliquely cut to form an unvulcanized belt molded body 5 having an almost trapezoidal cross section while the unvulcanized belt molded body 5 is heated and vulcanized under pressure in a vulcanizing mold 7 having a tooth mold 6 formed thereto to manufacture the V-belt. In the initial stage of this vulcanization, the pressure applied by the vulcanizing mold 7 is raised and lowered. By raising and lowering the pressure applied to the unvulcanized belt molded body 5, the air contained in the unvulcanized belt molded body 5 can be discharged forcibly.
| JP4656856 | V-belt type automatic transmission |
| JP2007051656 | BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION |
TANAKA MORIO
IHARA MATSUO
| JPS63236630A | 1988-10-03 | |||
| JPS6127214A | 1986-02-06 | |||
| JP2001001341A | 2001-01-09 | |||
| JP2002036245A | 2002-02-05 |
Atsuo Mori