| 摘要 |
<p>The fetching device comprises an arm (4) which captures die-cut blanks (3) located in the magazine (2) of an erecting machine for erecting these blanks to form boxes or the like. The extractor arm (4) is provided with suckers (5) and these suckers are supplied by circuits (13) and (14). The circuits (13) and (14) are connected to each end of the arm (4) and they are also provided with dispenser-type means (15) and (16), respectively, so that they can be active together or separately. The suckers (5) are wholly or partly provided with multifunction three-way valves (17). These valves (17) are able, on the one hand, to allow as many suckers (5) as possible to be selected and used for the operation of extracting each die-cut blank (3) and, on the other hand, to isolate the circuits (13) and (14) from each other in order to deactivate any suckers (5) which are to be shunted in order to erect said die-cut blanks (3), for example.</p> |
