Tyre building apparatus and method

摘要

A tyre building apparatus comprises a tyre building drum (12) for pulling and holding a tyre component on the outer circumference thereof. The tyre building drum being formed with a plurality of holding portions (22) for pulling the tyre component to the tyre building drum (12), and a pitch of adjacent holding portions in the circumferential direction is set to be different from the pitch of another adjacent holding portion in the circumferential direction of the tyre building drum. The holding portions can be pneumatic(suction) or magnetic. <IMAGE>