Apparatus for slitting coil stock
AssigneeMonsanto Company
InventorsJames E. Weeks, Charles J. Runkle, Bernhard T. Junker, Gary E. O'Connor
Life of this patent
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Abstract
An apparatus is disclosed for precision slitting of metallic coil stock into multiple continuous lengths of wire, wherein the resultant wire is characterized by a small cross-sectional area. The apparatus comprises means for guiding coil stock into a pair of revolving monolithic cutter rolls and means for collecting the slit wire. The rolls are positioned in engaging relationship and each roll contains a plurality of lands and grooves so that stock can be slit with an aspect ratio of less than five.
Claims16
An apparatus for slitting metallic coil stock into multiple continuous lengths of small cross-sectional wire, comprising:
- a rigid stationary housing;
- a first arbor positioned in the upper portion of said housing;
- a second arbor positioned in the lower portion of said housing and substantially parallel to said first arbor;
- a first and a second monolithic cutter roll positioned in engaging relationship on said arbors, each roll comprising, a plurality of lands and grooves wherein the grooves are characterized by essentially vertical sides and a curved root, the ratio between groove width and said coil thickness being less than 5:1 and the spacing between the lands of said first roll and the groove roots of said second roll being a pre-determined distance so that during slitting fracture occurs in the shear mode.
An apparatus for slitting black plate coil stock into multiple continuous lengths of wire of a cross-sectional area of less than about 7.0 .times. 10.sup..sup.-4 square inches, comprising:
- a rigid stationary housing;
- guide means positioned in front of said housing for guiding said black plate into said apparatus without rotational movement during slitting;
- a first arbor positioned in the upper portion of said housing;
- a second arbor positioned in the lower portion of said housing and substantially parallel to said first arbor;
- a first and a second monolithic cutter roll positioned in engaging relationship on said arbors, each roll comprising, a plurality of lands and grooves wherein the grooves are characterized by essentially vertical sides and a curved root, the ratio between groove width and said black plate thickness being less than 3:1 and the spacing between the lands of said first roll and the groove roots of said second roll being a pre-determined distance and a shoulder adjacent an outer groove said shoulder being at least three times as wide as said lands.
An apparatus for slitting metallic coil stock into multiple continuous lengths of small cross-sectional wire comprising:
- a first and a second monolithic cutter roll positioned in parallel relationship, each roll comprising, a plurality of lands and grooves wherein the grooves have essentially vertical sides terminating at a curved root, a nip being formed by the spacing between the lands of said first roll and the groove roots of said second roll;
- and means for supporting said first and second rolls.
Cutters adapted for slitting metallic coil stock, comprising:
- first and second cylindrical elements wherein each said element further comprises, a plurality of annular grooves spaced along said cylinder in a predetermined pattern and each said groove having a pair of vertical walls terminating at a curved root;
- and, a
- plurality of annular lands wherein each said land is adjacent a groove so that the width of each said land is defined by the spacing between a pair of adjacent annular grooves.
Dependencies are inferred from the claim text.