| 摘要 |
<p>In order to enable a packaging machine for producing packages of the flow-pack type to be adapted automatically to different sizes of package and different operating conditions, instead of the use of separate electronically-synchronized drive motors for the various movable elements, at least some of the movable elements, whose precise synchronization is essential for the correct functioning of the machine, are controlled by a single motor through a mechanism which is adapted selectively to the various shapes and different operating conditions by means of electronically-controlled positioning members.</p> |
