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US 6,318,141 B1Granted
Roller leveller
AssigneeKuraitekku Co., Ltd.
InventorHaruo Tokunaga
Life of this patent
Estimating the term…
Abstract
A roller leveller has an upper roller assembly 1 made of a plurality of taper rollers 7 each having a small diameter end with a collar 14 and a large diameter end, with the large diameter ends being set on a same side, and a lower assembly 2 made of a plurality of taper rollers 8 each having a small diameter end with a collar 15 and a large diameter end, with the large diameter ends being disposed on opposite sides of the large diameter ends of the taper rollers 7. The center axes of the upper and lower taper rollers 7 and 8 are inclined by a half-apex angle of the taper roller relative to a passing plane of a plate 50, and the upper and lower taper rollers are disposed in a zigzag way. A plate or coil plate 50 is passed between the upper and lower taper rollers to repetitively bend it and remove defective form.
Claims22
A roller leveller for working a plate, comprising:
- a plurality of upper taper rollers each having a large diameter end and a small diameter end with a collar, the large diameter ends being set on a same side, the small diameter ends being set on other side, and lower generating lines being disposed in parallel to a horizontal plane;
- a plurality of lower taper rollers each having a large diameter end and a small diameter end with a collar, the large diameter ends being set on a same side, the small diameter ends being set on other side, upper generating lines being disposed in parallel to a horizontal plane, said upper taper rollers and said lower taper rollers being disposed in a zigzag way, with the large and small diameter ends of said upper taper rollers being disposed on opposite sides of the large and small diameter ends of said lower taper rollers;
- an upper roller support frame having bearings for rotatively supporting said upper taper rollers, said upper roller support frarrie having a support plane in parallel to the lower generating lines of said upper taper rollers;
- and
- a lower roller support frame having bearings for rotatively supporting said lower taper rollers, said lower roller support frame having a support plane in parallel to the upper generating lines of said lower taper rollers.
2 more elements
A plate working system, comprising:
- a roller leveller for a plate comprising:
- a plurality of upper taper rollers each having a large diameter end and a small diameter end with a collar, the large diameter ends being set on a same side, the small diameter ends being set on other side, and lower generating lines being disposed in parallel to a horizontal plane;
- and
- a plurality of lower taper rollers each having a large diameter end and a small diameter end with a collar, the large diameter ends being set on a same side, the small diameter ends being set on other side, upper generating lines being disposed in parallel to a horizontal plane, said upper taper rollers and said lower taper rollers being disposed in a zigzag way, with the large and small diameter ends of said upper taper rollers being disposed on opposite sides of the large and small diameter ends of said lower taper rollers;
- and
- a working facility disposed at an output port of said roller leveller
- wherein said working facility is one of a facility of forming a seam welded pipe, an acid cleaning facility, and a hot strip mill down coiler.
4 more elements
A roller leveller for correcting a camber of a plate, comprising:
- a plurality of upper taper rollers each having a large diameter end and a small diameter end, the large diameter ends being set on a same side and the small diameter ends being set on other side to define a first plate opposing plane at a lower side thereof;
- a plurality of lower taper rollers each having a large diameter end and a small diameter end, the large diameter ends being set on a same side and the small diameter ends being set on other side to define a second plate opposing plane at an upper side thereof, said upper taper rollers and said lower taper rollers being disposed in a zigzag way, with the large and small diameter ends of said upper taper rollers being disposed oppositely to the large and small diameter ends of said lower taper rollers;
- a support frame having bearings for rotatively supporting said upper and lower taper rollers in such a manner that said first and second plate opposing planes are in parallel to the horizontal plane;
- and
- a position regulating mechanism for regulating a lateral position of the plate between the first and second plate opposing planes.
2 more elements
A method for correcting a camber of a plate, comprising the steps of:
- conveying a plate oriented horizontally;
- inserting the plate between upper and lower taper rollers disposed in a zigzag way, with large and small diameter ends of the upper taper rollers being disposed on opposite sides of the large and small diameter ends of the lower taper rollers and held by a frame which carries axes of said upper and lower taper rollers in such a slanted manner that the upper and lower taper rollers define horizontally oriented plate opposing planes;
- and
- correcting a camber of the plate by driving the plate while applying a pressure to the plate through said plate opposing planes and restricting a lateral position of the plate.
1 more element
A roller leveller for working a plate, comprising:
- a plurality of upper taper rollers each having a large diameter end and a small diameter end with a collar, the large diameter ends being set on a same side, the small diameter ends being set on other side, and lower generating lines being disposed in parallel to a horizontal plane;
- a plurality of lower taper rollers each having a large diameter end and a small diameter end with a collar, the large diameter ends being set on a same side, the small diameter ends being set on other side, upper generating lines being disposed in parallel to a horizontal plane, said upper taper rollers and said lower taper rollers being disposed in a zigzag way, with the large and small diameter ends of said upper taper rollers being disposed on opposite sides of the large and small diameter ends of said lower taper rollers;
- and
- bridle rollers disposed before and after said taper rollers for applying a tensile force to a coil plate.
1 more element
A roller leveller for working a plate, comprising:
- a plurality of upper taper rollers each having a large diameter end and a small diameter end with a collar, the large diameter ends being set on a same side, the small diameter ends being set on other side, the upper taper rollers defining lower generating lines;
- a plurality of lower taper rollers each having a large diameter end and a small diameter end with a collar, the large diameter ends being set on a same side, the small diameter ends being set on other side, the lower taper rollers defining upper generating lines, said upper taper rollers and said lower taper rollers being disposed in a zigzag way, with the large and small diameter ends of said upper taper rollers being disposed on opposite sides of the large and small diameter ends of said lower taper rollers;
- and
- a support frame having bearings for rotatively supporting said upper and lower taper rollers in such a manner that said lower and upper generating lines are in parallel to a horizontal plane.
1 more element
Dependencies are inferred from the claim text.