| 摘要 |
PCT No. PCT/CH96/00225 Sec. 371 Date Oct. 27, 1997 Sec. 102(e) Date Oct. 27, 1997 PCT Filed Jun. 12, 1996 PCT Pub. No. WO96/41760 PCT Pub. Date Dec. 27, 1996A feed device for a packaging machine having two conveying elements that circulate adjacent to one another at least along an operating path between a loading station and an unloading station. The conveying elements are driven by separate drive motors each connected to a respective rotation angle sensor. The motors and sensors are connected to a control device. Each conveying element has a plurality of pushers spaced with a uniform, settable interval, the plurality of pushers extending over only a portion of the length of the respective conveying element and including a front pusher and back pusher. The control device control the device motors in such a manner that the front pusher of the one conveying element, in the region of the loading station, follows the back pusher of other conveying element with a spacing corresponding to the interval. |
