| 摘要 |
PURPOSE:To prevent shocking torque from acting on a pulley or a reduction gear by placing a flexible coupling between the output shaft of a motor and the input side of a crank mechanism. CONSTITUTION:Rotation of a motor 2 is transmitted to a pulley 4, a belt 10, a pulley 6, a shaft 8, a flexible coupling 12, a reduction gear 18, and a rotor 28. And a sector gear 32 oscillates in a reciprocal motion right and left around a shaft 34 within a range of the predetermined angle. While the sector gear 32 moves toward (a), a solenoid clutch 40 is turned ON and a feed roller 46 rotates counterclockwise, thereby advancing a film 52 in the arrow-marked direction by the prescribed distance. While the sector gear 32 moves toward (b), the solenoid clutch 40 is turned OFF or the clutch is disconnected, and a solenoid brake 48 is turned ON. Thus, the feed roller 46 is stopped, during which time the film 52 undergoes the heat seal processing. |
