| 摘要 |
<p>A buffer for transporting a flexible work piece such as a printed sheet between a first and a second workstation having different operational speeds. The buffer has drive rollers (26) arranged along a path of travel from the outlet of the first station to the inlet of the second for moving the work piece through the buffer at a constant speed that may be different than the operational speeds of the workstations. A slip clutch limits the torque applied by the drive rollers should the constant speed of the buffer be greater than the speed at which the sheet is moving through the first work station and a one-way clutch (34) allows the drive rollers to overrun a drive shaft (32) to permit the sheet to move into and out of the buffer at a speed greater than the constant speed.</p> |
