Method and device for changing rolls in a machine utilizing strip material
AssigneeG.D S.p.A.
InventorsFiorenzo Draghetti, Silvano Boriani, Igino Conti
Life of this patent
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Abstract
In a machine utilizing rolls of strip material for whatever purpose, typically a wrapping machine, the depleted rolls are replaced by new rolls taken up in succession from a magazine by a transfer unit including a gripping head that can be traversed along a guide, which in turn can be rotated about and reciprocated along the dispensing axis of the magazine. Being thus rotatable about a permanent axis, the guide can be made selectively to assume different angular positions, each coinciding with a line connecting this same axis with the axis of a respective uncoiling pivot provided by the machine.
Claims10
A method of changing rolls of strip material on a machine having a roll supply-holding station in which a plurality of individual rolls of strip material which are subsequently to be used by the machine are serially disposed in coaxial alignment along a first axis and having at least two roll-uncoiling stations at which respective individual rolls are uncoiled of strip material about respective second axes,
- said method comprising:
- successively transferring said rolls individually from said roll supply-holding station to respective ones of said roll-uncoiling stations along respective rectilinear trajectories, using a guide, including rotating said guide about said first axis to provide each respective rectilinear trajectory.
A device for changing rolls of strip material on a machine having a roll supply-holding station in which a plurality of individual rolls of strip material which are subsequently to be used by the machine are serially disposed in coaxial alignment along a first axis and having at least two roll-uncoiling stations at which respective individual rolls are uncoiled of strip material about respective second axes, by successively transferring said rolls individually from said roll supply-holding station to respective ones of said roll-uncoiling stations along respective rectilinear trajectories,
- said device comprising:
- a guide mounted for rotation about said first axis, said guide having a slide associated therewith for sliding along a guide path provided along said guide;
- a gripper for successively gripping each roll at said roll supply-holding station and moving the respective roll away from said roll supply-holding station along said first axis and into juxtaposition of the gripper with said guide at said slide;
- a first actuator for positioning said guide by rotation of said guide about said first axis until said guide path coincides with a straight line connecting said first axis with a respective one of said second axes;
- and
- a second actuator for traversing said slide and said gripper therewith along said guide path of said guide and thereby moving the respective said roll into a respective said roll-uncoiling station.
Dependencies are inferred from the claim text.