A transfer device maintaining a constant tension of band-shaped film from the beginning to the end of the operation

摘要

Provided is a transfer device capable of maintaining a constant tension of band-shaped film from the start till the end of operation requiring no action by a user. While band-shaped film (F) is being supplied, a feed shaft unit (4) and a feed drive gear (3) rotate. In accordance with their rotations, a movable plate (6) screw- retreats so that the interval between the movable plate (6) and the surface of the feed drive gear (3) is increased in the axial direction. Consequently, the force of a coil spring (5) is reduced and the braking force (a force to press the surface of the feed drive gear (3) to stop its rotation) is gradually decreased.