US 5,330,126 A · Cup sidewall stock unwind stand

Abstract

An unwind stand for unwinding rolled material is disclosed in which a movable carriage mounted on a stationary frame includes at least two roll holders adapted to support a roll of material and a shifting mechanism connected to the movable carriage for moving the carriage between a first unwinding position in which a first roll of material supported by a first roll holder is positioned for unwinding, and a second unwinding position in which a second roll of material supported by a second roll holder is positioned for unwinding. Once a roll is in the unwinding position, the shifting mechanism also functions to maintain the material unwinding from the roll in an alignment position in response to an alignment detector by making fine adjustments to the lateral position of the carriage. The unwind stand may also include a rotatable wheel connected to a carrier slidably mounted on a rodless cylinder for applying a radial braking force to the roll of material, thereby imparting tension to the unwinding material. The rotatable wheel may include a pair of friction discs surrounding a portion of the wheel which can be adjustably compressed to control the slip torque of the wheel, thereby further controlling the tension of the unwinding material.

Claims32

Dependent claims

An unwind stand for rolled material comprising:

a movable supporting means for supporting at least two rolls of material, said supporting means including a first roll holding means and a second roll holding means for holding a first roll of material and a second roll of material respectively;
a shifting means including a shifting mechanism connected to said movable supporting means for shifting said movable supporting means between a first unwinding position in which a first roll of material received by said first roll holding means is positioned for unwinding and a second unwinding position in which a second roll of material received by said second roll holding means is positioned for unwinding;
an alignment detecting means for detecting the position of the material unwinding from a roll relative to an unwinding material alignment position, said alignment detecting means operatively connected to said shifting mechanism and adapted to actuate movement of at least a portion of said shifting mechanism for adjusting said movable supporting means to maintain the material in said alignment position, wherein the material unwinding from a roll travels in an unwinding direction and said shifting mechanism shifts said movable supporting means laterally with respect to the unwinding direction.

An unwind stand for rolled material comprising:

a stationary frame;
a carriage movably mounted on said stationary frame for supporting at least one roll of coiled material, said carriage means including at least one roll holding means for rotatably holding a roll of material;
a carriage shifting means including a shifting mechanism for shifting said carriage between an unwinding position in which a roll of material positioned in said at least one rolling holding means is positioned for unwinding and a stand-by position in which the roll of material positioned in said at least one roll holding means is moved substantially out of said unwinding position;
an alignment detecting means for detecting the position of the material unwinding from a roll when in said unwinding position relative to an unwinding means operatively connected to said shifting mechanism and adapted to actuate movement of at least a portion of said shifting mechanism for adjusting said carriage to maintain the material in said alignment position, wherein the material unwinding from a roll positioned in said unwinding position travels in an unwinding direction and said shifting mechanism shifts said movable supporting means laterally with respect to said unwinding direction.

1 more element

Dependencies are inferred from the claim text.

Cup sidewall stock unwind stand

Life of this patent

Cup sidewall stock unwind stand

Life of this patent

Abstract

Claims32