Apparatus and method for replacing a finished roll with an empty roll core in a double-drum winder
First Claim
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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Accused Products
Abstract
The disclosure concerns both an apparatus and a method for replacing a finished web roll with an empty core and roll support in a double-drum type web winder. The web winder has a winding station at which a pair of drums wind a web on a roll support carried on an extractable core. The finished roll is moved across a transfer table to an extraction table at which the core is removed laterally. At the extraction station, the removed core is reinserted in a new web roll support. The core and new web roll support are pivoted up to an upraised waiting position. A newly finished roll at the winding station is moved toward the extraction station. The new web support and the core within it are moved above the just-finished roll and are delivered to the winding station for winding the next web roll on the core and new roll support.
19 Citations
15 Claims
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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, wherein
the 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. - View Dependent Claims (2, 3, 4, 5, 6)
- 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;
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7. Method for replacing a finished roll with an empty core and roll support in a drum-type web winder, comprising:
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at a winding station, winding a web on a roll support, which roll support is carried on a core, until the web roll is finished;
moving the finished roll over a transfer table from the winding station to an extraction station;at the extraction station, before the finished web roll is moved there, placing a new roll support on a core;
then raising up the core and new roll support thereon to be above the finished roll;
moving the core and new roll support to the winding station while passing them over the finished roll which has been moved off the winding station and toward the extraction station. - View Dependent Claims (8, 9, 10)
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11. Method for replacing a finished roll with an empty core and roll support in a drum-type web winder, comprising:
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at a winding station, winding a web on a roll support, which roll support is carried on a core, until the web roll is finished;
moving the finished roll over a transfer table from the winding station to an extraction station;at the extraction station, before the finished web roll is moved there, placing a new roll support on a core; moving the core and new roll support to a waiting position between the winding and extraction stations, until the finished roll is moved from the winding station;
moving the core and roll support above the finished roll to the winding station from which the finished roll has been moved. - View Dependent Claims (12, 13, 14, 15)
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Specification