| 摘要 |
A surface mount machine has a fixed X-axis (47) comprising a straight beam rigidly mounted in the machine chassis along which one or several wagons (48, 49) move(s), each one carrying at least one component pick-up device (50, 51). Below the X-beam for the X-axis (47) there are component feeders (55) which are organised in groups (52, 53, 54) and which are accessible by the pick-up devices (50, 51) and at least two Y-axes provided by linear bearings (41 - 44), which are rigidly mounted in the machine chassis. Y-wagons (45, 46) for carrying printed circuit boards move along the Y-axes. As there are at least two PCB carrying Y-axes, it can be arranged that at least one of them presents a PCB on which the pick-up devices (50, 51) can place components. The time during which the pick-up devices (50, 51) must be idle during PCB unload and load will thereby be dramatically reduced. <IMAGE> |
