US 8,813,622 B2Granted

Machine for slitting metal sheet

AssigneeRed Bud Industries, Inc.

InventorDean S. Schoenbeck

Life of this patent

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Abstract

A machine for slitting metal sheet into strips includes a fixed upper beam and a lower beam that is displaceable vertically. Both beams support slitter heads that move along the beams. Each beam carries an arbor that rotates in it and extends through the slitter heads on it. Each beam also has a fixed threaded shaft and lock rods that extend through the slitter heads on it. Each slitter head carries a knife that rotates with the arbor for its beam. Each slitter head also has a motor-driven nut that engages the threaded shaft extending through the beam and, when rotated, moves the slitter head along its beam. The slitter heads have clamps, which clamp down on the lock rods to secure the slitter heads in fixed positions. The knives rotate about axes that are skewed slightly relative to the axes of the arbors that drive them.

Claims18

Dependent claims

A machine for slitting metal sheet, said machine comprising:

a first arbor mounted for rotation about a first axis;
a second arbor mounted for rotation about a second axis that is parallel to the first axis;
first elongated lock elements located parallel to and in fixed positions with respect to the first axis;
second elongated lock elements located parallel to and in a fixed position with respect to the second axis;
a first slitter head located along the first arbor and along the first lock elements;
the first slitter head including:
a hub located around the first arbor, the hub being engaged with the first arbor for rotation with the first arbor, yet being displaceable along the first arbor;
a knife carried by and rotatable with the hub;
and
clamps for clamping against the first lock elements and securing the first slitter head from axial movement along the first arbor;
a second slitter head located along the second arbor and along the second lock elements, the second slitter head including:
a hub located around the second arbor, the hub being engaged with the second arbor for rotation with the second arbor, yet being displaceable along the second arbor;
a knife carried by and rotatable with the hub;
and
clamps for clamping against the second lock elements and securing the second slitter head against axial movement along the second arbor;
whereby the knives of the first and second slitter heads can be positioned to establish a nip through which metal sheet upon passing will be severed into separate strips;
wherein the clamps are actuated by a pressurized fluid;
a first beam supporting the first arbor and first slitter heads;
a second beam supporting the second arbor and second slitter heads;
a first hose assembly carried by the first beam for directing pressurized fluid to the first slitter heads;
and
a second hose assembly carried by the second beam for directing pressurized fluid to the second slitter heads;
each hose assembly including;
an entry block mounted on the beam that carries the hose assembly;
a terminal block carried by each slitter head on the beam that carries the hose assembly;
a flexible hose extending between the entry block and the terminal block for each slitter head, each hose extending from the entry block away from the slitter head and then toward the slitter head and forming a loop where it changes direction;
and
a hose carrier at the loop in each hose, the hose carrier being urged away from the entry and terminal blocks to maintain the hose taut.

25 more elements

A machine for slitting metal sheet, said machine comprising:

a first beam;
a second beam spaced from the first beam;
a first arbor extending along the first beam and rotatable about a first axis;
a second arbor extending along the second beam and rotatable about a second axis that is parallel to the first axis;
at least one first slitter head on the first beam;
at least one second slitter head on the second beam;
each slitter head comprising:
a housing that is movable along the beam on which the slitter head is located;
a hub that rotates in the housing and through which extends the arbor for the beam on which the slitter head is located, the hub being engaged with the arbor to rotate with the arbor, but being movable axially along the arbor,
a knife carried by the hub;
at least one fluid-operated device on the housing;
a first hose assembly carried by the first beam for directing pressurized fluid to the fluid-operated device on the first slitter head;
and
a second hose assembly carried by the second beam for directing pressurized fluid to the fluid-operated device on the second slitter head;
each hose assembly including:
an entry block mounted in a fixed position with respect to the beam that carries the hose assembly;
a terminal block carried by the slitter head on the beam that carries the hose assembly;
a flexible hose extending between the entry block and the terminal block for the slitter head, the hose extending from the entry block away from the slitter head and then toward the slitter head and forming a loop where it changes direction;
and
a hose carrier at the loop in each hose, the hose carrier being urged away from the entry and terminal blocks to maintain the hose taut.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/370,414Filed 10 Feb 2012
Published: US 2013/0205966 A115 Aug 2013
Granted: 26 Aug 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

B23D 35/004
Means for mounting the cutting members: for circular cutting members
B23D 19/04
Shearing machines or shearing devices cutting by rotary discs: having rotary shearing discs arranged in co-operating pairs
B23D 19/06
Having rotary shearing discs arranged in co-operating pairs: with several spaced pairs of shearing discs working simultaneously, e.g. for trimming…
B23D 35/007
Adjusting the position of the cutting members: for circular cutting members