Center drive unwind system
AssigneePaper Converting Machine Company
InventorWayne D. Klimek
Life of this patent
Estimating the term…
Abstract
A center driven unwind system for core-equipped parent rolls includes a frame for supporting the parent roll while it is being unwound, a parent roll placement cart for moving a parent roll from a loading position to the unwinding position on the frame, and a core removal cart for removing an unwound parent roll from the frame.
Claims16
A center driven unwind system for core-equipped parent rolls comprising:
- a frame including a pair of horizontally spaced-apart side frames,
- a retractable chuck on each of the side frames for insertion into a parent roll core,
- a first cart portion for supporting a new core-equipped parent roll, means on the first cart portion for moving a new parent roll from a first position in which the new roll is not between said side frames to a second position in which the new roll is between said side frames and said chucks can be inserted into the core of the new roll, and
- a second cart portion for supporting a partially unwound core-equipped parent roll, means on the second cart portion for moving the partially unwound roll from a first position in which the partially unwound roll is between the side frames and said chucks are inserted into the core of the partially unwound roll to a second position in which the partially unwound roll is not between the side frames.
A method of unwinding core-equipped parent rolls from an unwind stand having a pair of spaced-apart side frames and a retractable chuck on each of the side frames for insertion into a parent roll core comprising the steps of:
- supporting a core-equipped parent roll on a first movable cart portion, the roll having a web wound thereon,
- moving the first cart portion from a first position in which the roll is not between said side frames to a second position in which the roll is between said side frames and said chucks can be inserted into the core of the roll,
- inserting the chucks into the roll to support the roll on the chucks,
- moving the first cart portion from the second position to the first position,
- at least partially unwinding the web from the roll while the roll is supported by the chucks,
- moving a second movable cart portion from a first position in which the second cart portion is not between the side frames to a second position in which the second cart portion is in position to support the roll,
- retracting the chucks from the roll so that the roll is supported by the second cart portion, and
- moving the second cart portion and the roll to the second position of the second cart portion.
Dependencies are inferred from the claim text.