METHOD AND APPARATUS FOR FORMING ANGLE GROOVE OF LOW ANGLE IN CONTINUOUS BAND MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method and an apparatus for forming an angle groove of low angle on continuous band material wherein cutting workability in forming process can be made excellent, but joining sticking-together operation can be carried out without generating any difference in level in sticking components together to improve productivity of a tire, and defects after vulcanizing can be reduced. SOLUTION: A festoon device 3 controlling operation of a spreading device, a first conveying means 4, and a second conveying means 5 which are composed of a belt conveyor capable of turning regularly and reversely are in series installed between the spreading device 1 on which a band material W consisting of an unvulcanized rubber sheet is wound and a winding device 2. An embossing device 6 corresponding to total width in a width direction of the band material W which forms a conical groove Q of low angle (3 deg. to 15 deg.) at specific intervals of the continuous band material W is installed between the first conveying means 1 and the second conveying means 5.