| 摘要 |
<p>The invention relates to a system for feeding single bags to automatic bag inserting apparatuses, picking them up and also unsticking the bag being picked up from the underlying ones, in case they are glued to one another because of glue drops during the bag manufacture. The system substantially comprises (see Fig. 3) three units: a first unit (6) provided with suction cups (12), picking up the bag at its transversal middle portion, where accidental adhesion of bags cannot happen, and lifting it to allow that two unsticking units, (7, 8) consisting of bars (22, 22', 30, 30') being inserted under the bag and unsticking it from the underlying one with a spreading action, are inserted between said bag being picked up and the underlying one.</p><p>One of the two units is also provided with pincers (26, 26') blocking the bag edges on the open unsticking arms (22, 22') and, in the return stroke of the unit to the starting position, transferring it on to the feeding device of the bag inserting apparatus.</p><p>The other unsticking unit (8) is so arranged that the two unsticking bars, (30, 30') in addition to the spreading action, are lowered so as to press the underlying bags so as to hold them down during the stage of bag picking by said pincers (26, 26') of the first unsticking unit (7), so that, if the unsticking was not complete, the underlying bags are kept blocked down and the bag being picked up is stripped and finally separated from the others.</p> |
