Device for feeding a quasi-endless material web
AssigneeA. Raymond Et Cie
InventorsMartin Büsch, Tobias Buss
Life of this patent
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Abstract
The invention relates to a device for feeding a quasi-endless material web (4) to a manipulation device (19) receiving the material web (4), wherein a feed tension unit (8) is provided, through which the material web (4) is fed in an S-shape. The feed tension unit (8) comprises a pivotal feed dancer roller (12), the angle positions thereof being captured by a feed angle sensor (34) and fed to a control unit (36), by means of which the material web (4) is fed or retracted by a dispenser roller motor (3) in the direction of the manipulation device (19), depending on the deviation of the angle position from a reference angle position. Substantially uniform tension in the material web (4) is thereby ensured, even under extreme operating conditions.
Claims10
A device for feeding a quasi-endless material web to a manipulation device, said device comprising:
- a freely movable manipulation device about which the material web is received;
- a rotatable dispenser roll upon which the material web is received, said dispenser roll coupled to a dispenser roll motor, said dispenser roll motor operable to drive said dispenser roll in a first direction of rotation and in a second direction of rotation opposite said first direction of rotation;
- and
- a feed tension unit arranged between said dispenser roll and said manipulation device, said feed tension unit comprising:
- at least two fixedly arranged fixed rolls;
- at least one swivel-mounted floating roll;
- an angle sensor responsive to an angular position of said floating roll;
- and
- a control unit connected to said angle sensor and said dispenser roll motor, said control unit operable responsive to a deviation by said floating roll from a reference angular position to operate said dispenser roll either in said first direction of rotation to feed the material web to said manipulation device or in said second direction of rotation to retract the material web from said manipulation device.
Dependencies are inferred from the claim text.