| 摘要 |
PURPOSE:To provide the titled device capable of supplying and cutting-off air at accurate timings, wherein an air source and an air-using part in a cylinder are communicated to each other at a predetermined position in each rotation of the cylinder through a long groove provided in a fixed valve, a vent hole provided at the peripheral surface of a bearer and an air pipe. CONSTITUTION:The peripheral surface of the bearer 22 provided at an end part of a rotary cylinder is faced to an arcurate long groove 27 provided in the fixed groove 23 provided for a machine base frame 21. At the predetermined position in each rotation of the cylinder 9, the air source and the air-using part in the cylinder are communicated to each other through the long groove 27, the vent hole 26 provided at the peripheral surface of the bearer 22 and the air pipe 32. Accordingly, air-ejecting and air-sucking timings are prevented from being delayed, even at the time of high-speed rotation. |
