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Apparatus and method for replacing a finished roll with an empty roll core in a double-drum winder

  • US 4,428,543 A
  • Filed: 10/16/1981
  • Issued: 01/31/1984
  • Est. Priority Date: 10/25/1980
  • Status: Expired due to Fees
First Claim
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1. Apparatus for replacing a finished web roll with an empty core and a roll support in a drum-type web winder, whereinthe web winder comprises a winding station including drum means on which the web is wound on a roll support supported on a core;

  • an extraction station removed from the winding station and including extraction means for extracting a core from a wound roll then at the extraction station;

    transfer means for transferring a wound roll from the winding station to the extraction station;

    the apparatus for replacing comprises a support;

    a lever movably carried on the support;

    the lever having a free end with a gripper for gripping a core;

    lever moving means for moving the lever with respect to the support, the roll support at the drum means and the transfer means;

    the lever moving means moving the lever to move the gripper between the extraction station, where the gripper receives an empty core and roll support, and the winding station, where the gripper delivers the core and roll support to the web winder;

    the lever moving means raising the gripper to raise a core and a roll support supported on the core to pass over a finished roll which may be present at one of the winding station and the transfer means as the gripper moves that core and a supported roll support to the winding station and the support lever moving means and gripper being shaped so that the finished roll would be able to extend up to the upraised core and roll support.

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