Class / Patent application number | Description | Number of patent applications / Date published |
072160000 | By use of deflected arranged to provide longitudinally undulating path for work (e.g., "leveling") | 29 |
20090282883 | METHOD OF AND APPARATUS FOR LEVELING STRIP - A method of leveling metal strip having a thickness ≦1 mm has the steps of passing the strip in a travel direction through an upstream braking-roller set and a downstream tension-roller set and through a group of leveling rollers between the braking-roller set and the tension-roller set. A predetermined tension equal to at least 70% of a yield limit of the strip is applied to the strip between the braking-roller set and the tension-roller set for stretch-bend or tension straightening by differentially driving the upstream and downstream roller sets. The strip is bent between the leveling rollers to correct longitudinal curve. Leveling rollers are used of diameters that increase downstream in the travel direction and that are so great that the strip follows the curvature of the leveling rollers at the predetermined tension. | 11-19-2009 |
20140157850 | ROLLER LEVELER - A roller leveler for leveling strips of metal has a frame, a bank of upper and lower work rolls journalled in the frame via a housing positioned toward an exit portion of the leveler. A bank of upper and lower back-up rolls is in contact with the upper and lower work rolls to support the work rolls. The bank of upper and lower back-up rolls mounted to the frame via back-up housings. A second bank of upper and lower work rolls is positioned near an entry portion of the leveler. The first bank of upper and lower rolls has rolls of different diameter than the second bank of upper and lower work rolls. A roll or rolls can be mounted in an eccentric fashion that is achieved by permanent or adjustable positioning of offset of the work roll with respect to adjacent rolls or by providing a work roll that is larger in diameter than its adjacent rolls. | 06-12-2014 |
20150013417 | METHOD AND APPARATUS FOR STRETCH-LEVELING METAL STRIP - A metal strip is gripped by an upstream set of infeed tension rollers and, downstream therefrom in a strip-travel direction, by a downstream set of outfeed tension rollers. These tension rollers are rotated so as to tension the strip between the upstream and downstream sets and move the strip downstream in the strip-travel direction. Between the sets the strip first passes around individually supported relatively rotatable stretch rollers to increase a plastic stretch ratio of the strip, and then through a plurality of straightening rollers to reduce curvature and residual tension of the strip and also to increase the plastic stretch ratio of the strip. | 01-15-2015 |
20150128675 | ROLLER LEVELER AND PLATE FLATTENING METHOD USING THE SAME - A roller leveler includes: a leveling roll unit having a plurality of leveling rolls configured to rotate so as to pass a plate while sandwiching and pressing the plate; a pushing cylinder provided at each of an entrance side and a discharge side of the leveling roll unit, at which the plate enters and is discharged, respectively, and configured to press the plate via the leveling rolls; and a driving mechanism configured to rotate the leveling rolls to pass the plate. At least one of the plurality of leveling rolls has a stepped structure, including a lateral center portion with a large diameter, corresponding to a center portion of the plate with respect to a plate width direction, and lateral end portions with a small diameter, corresponding to edge portions of the plate with respect to the plate width direction. | 05-14-2015 |
20160001339 | ROLL LEVELLER FOR METAL SHEETS AND A PROCESS FOR LEVELLING A METAL SHEET WITH IT - A roll leveler for metal sheets, comprising a plurality of leveling rolls (R | 01-07-2016 |
072161000 | With deforming of work or product (other than levelling) | 4 |
20090100890 | Rolling Stand, Rolling Train, And Method For Rolling Metal Strip - The invention concerns a rolling stand, a rolling train, and a method for rolling a stepped preprofiled metal strip. In order to guarantee that the metal strip is free of waviness in its longitudinal direction, even after individual thickness reduction of the steps, the invention proposes that the thickness reduction be carried out on a step-specific basis according to the following mathematical relationship: Δh | 04-23-2009 |
20130327109 | ROLLER LEVELER AND METAL SHEET FLATTENING METHOD - A roller leveler for flattening a metal sheet or plate having a cut-sheet form includes leveling rolls disposed in a staggered state on upper and lower sides of a pass line and configured to sandwich and flatten the metal sheet while pressing it therethrough, a hydraulic pressing cylinder configured to press the metal sheet via the leveling rolls, a drive unit configured to rotate the leveling rolls, and a pinch roll unit disposed on one side of a leveling roll array area and including a pair of pinch rolls. The pressing cylinder presses the metal sheet via the leveling rolls with a pressing amount necessary for flattening the metal sheet, while the metal sheet is passed by a drawing force applied by the pinch rolls and a driving force applied by the drive unit. | 12-12-2013 |
20150135790 | Method for the Cold Deformation of a Continuous Metal Strip - The invention relates to the pressure treatment of metals, specifically to producing a metal strip using cold deformation. A strip is consecutively drawn with back and front tension through bending devices. Moreover, the degree of deformation of a strip is regulated in each bending device by means of changing the ratio of the speed of the strip exiting a bending device to the speed of said strip entering said device, in such a way as to avoid a break in the metal, the required number of bending devices being selected on the basis of the total stretch factor of a strip and on the maximum allowable stretch factor of same. The result is increased deformation of a strip and reduced energy consumption. | 05-21-2015 |
20150290691 | APPARATUS AND METHOD FOR BENDING COILED TUBING - Apparatus for bending a coiled tubing, the apparatus having a head portion for lateral insertion in a side opening in a wall of a well, the head portion defining a bending path for bending the coiled tubing during feeding thereof through the head portion, and the head portion having a coiled tubing straightener for straightening the coiled tubing during feeding. The coiled tubing straightener is retractable so that it can adopt a retracted position, for lateral insertion of the head portion into the side opening of the well wall. The head portion has, when the straightener is in the retracted position, a profile as viewed in the direction of lateral insertion, and the straightener being extendable for operation to straighten the coiled tubing to an extended position at least partly outside of the profile of the head portion. | 10-15-2015 |
072162000 | Including relatively-inclined successive rollers | 6 |
20080202187 | Method for Straightening Hot Profiled Sections - The invention relates to a method for leveling profiles ( | 08-28-2008 |
20090301156 | TUBING STRAIGHTENER - A tubing straightener includes a housing having a tubing receiving end and a tubing ejection end. At least one set of drive rollers is positioned within the housing and disposed between the first end and the second end. The drive rollers engage tubing to be straightened such that, in use, the drive rollers apply a driving force to the tubing. Each drive roller has more than one circumferential profile for engaging tubing of different diameters. At least one top guide roller and at least one bottom guide roller for guiding the tubing through the housing. | 12-10-2009 |
20100229614 | METHOD TO STRAIGHTEN METALLIC FILAMENT - In various exemplary embodiments, the technology described herein provides systems and methods for drawn wire, commonly called filament, to be straightened after cold, warm or hot drawing to a smaller diameter. This technology controls tension on the wire after drawing, while pulling the wire through straightening rollers. A single set of straightening rollers can be used. There is no limit on the total number of sets of straightening rollers can be used. The number of individual rollers in a set of straightening rollers can range from two-to-many rolls. Tension is generally controlled by at least two relatively large diameter synchronizing sets of pulling rollers, one before the straightening rollers and one after the straightening rollers. | 09-16-2010 |
20140150512 | PIPE STRAIGHTENING APPARATUS AND A METHOD OF STRAIGHTENING A PIPE - A pipe straightening apparatus comprising a first set of rotatably mounted elements which define, at least in part, a first passageway through which a pipe can be constrained to pass, so as to straighten the pipe, wherein the first set of rotatably mounted elements are arranged such that when a pipe translates within the first passageway, relative to the apparatus, the first set of rotatably mounted elements roll along the pipe, relative to the pipe, in a direction which has a component in the circumferential direction of the pipe and a second set of rotatably mounted elements which define, at least in part, a second passageway through which a pipe can pass, wherein the second set of rotatably mounted elements are arranged such that when a pipe translates within the second passageway, relative to the apparatus, the second set of rotatably mounted elements roll along the pipe, relative to the pipe, in a direction that is substantially parallel to the longitudinal axis of the pipe. | 06-05-2014 |
20150143864 | ROLLER LEVELER - A roller leveler is provided having a substantially uniform pitch of leveling rolls arranged in a zigzag manner. The roller leveler has a first roll group with first leveling rolls at a pitch “P1”, a second roll group with second leveling rolls at the pitch “P1”, a first retract mechanism for retracting the middle first leveling rolls, and second retract mechanisms for retracting pairs of end second leveling rolls. The second roll group also has third leveling rolls at the pitch “P1” with respect to the outermost second leveling rolls. | 05-28-2015 |
20150343508 | DRAWING UNIT AND CORRESPONDING METHOD - Drawing unit for drawing at least one long metal product (P), configured to make the at least one long metal product (P) advance along a nominal axis of feed (A) and provided with at least a first motorized roll ( | 12-03-2015 |
072163000 | And back-up means for roller-deflector | 2 |
20140090436 | TENSION LEVELER - A tension leveler includes a work roll coming into contact with a metal sheet and a pair of backup rolls coming into contact with the work roll. A hardening layer harder than the inside of the backup rolls is formed on the surfaces of the backup rolls. The Shore hardness inside the backup rolls is lower than the Shore hardness in the surfaces of the backup rolls by HS23 to HS36. | 04-03-2014 |
20150013418 | ROLLER LEVELER AND SHEET-MATERIAL FLATTENING METHOD - A roller leveler for flattening sheet material includes: a leveling roll unit that has a plurality of leveling rolls configured to rotate so as to pass the sheet material while sandwiching and pressing the sheet material interposed therebetween; pushing cylinders configured to press the sheet material via the leveling rolls and provided on each of an entrance side and a discharge side of the leveling roll unit, on which the sheet material enters and is discharged into and from the leveling roll unit, respectively; and a driving mechanism configured to rotate the leveling rolls to pass the sheet material, wherein the plurality of leveling rolls are designed so that a diameter thereof satisfies a relation, 0.501-15-2015 | |
072164000 | And adjustable carrier for deflector | 12 |
20110197645 | Drawing and/or Straightening Unit For Oblong Metal Products, Such as Bars, Round Pieces or Metal Wire - A drawing and/or straightening unit for feeding one or more oblong metal products to a machine for working the metal products. The drawing and/or straightening unit comprises a first driven roller on which at least one metal product to be fed is positioned longitudinally, and at least a second contrasting roller, opposite the first roller with respect to an axis of feed of the metal product, to keep the metal product correctly positioned with respect to the first roller during feed. The drawing and/or straightening unit comprises actuators operationally associated with the second roller, in order to move, at least in the initial positioning step, the second roller with respect to the first roller, in order to vary the distance between the second roller and the first roller. The actuators comprise a first linear actuator able to command the initial movement of approach of the second roller toward the first roller, and at least a second linear actuator able to command the selective and controlled movement of the second roller substantially continuously during the feed steps, and hence the contrast applied to the metal product, according to its actual sizes. | 08-18-2011 |
20110289994 | SYSTEM AND METHOD FOR STRAIGHTENING TUBING - A technique enables extending the useful life of tubing deployed in a wellbore. The technique involves routing a damaged or distorted tubing through a straightening device. The tubing straightening device bends and counter bends the tubing along predetermined axes as it passes through the tubing straightening device. The bending and counter bending are selected so the tubing exits the straightening device with a predetermined form. | 12-01-2011 |
20120103047 | ROLLER LEVELER - A roller leveler is provided having a substantially uniform pitch of leveling rolls arranged in a zigzag manner. The roller leveler is provided with a first roll group having first leveling rolls arranged with a pitch “P | 05-03-2012 |
20120174643 | METHOD AND DEVICE FOR CONTINUOUSLY STRETCH-BEND-LEVELING METAL STRIPS - The invention relates to a method and a device for continuously stretch-bend-leveling metal strips, wherein a strip under a tensile stress below the elastic limit is alternatingly bent about at least four straightening rollers in the plastic or elastic-plastic region and thereby undergoes plastic stretching. The bending radii of all four straightening rollers are thereby set dually and independently of each other, as the straightening rollers are set up having individually controlled positions. | 07-12-2012 |
20130074565 | LEVELLING DEVICE - A levelling device for a strip of material contains a first cassette frame unit having a plurality of first levelling rollers with juxtaposed axes of rotation spaced by a first pitch substantially greater than a first diameter of the rollers, each of the rollers having one extremity coupled and driven individually by a motor torque transmission extender. A second cassette frame unit is interchangeable with the first cassette frame unit and contains a plurality of second levelling rollers with juxtaposed axes of rotation spaced by a second pitch substantially greater than the second diameter of the second rollers. A motor drive drives a plurality of motor torque transmission outputs to each of the extenders. The second cassette frame unit includes a torque distribution module disposed and coupled between one extremity of at least one of the extenders and at least two juxtaposed extremities of the second rollers. | 03-28-2013 |
20130111962 | STRETCH-BENDING STRAIGHTENER - The invention relates to a method and stretch-bending straightener for straightening metal strips ( | 05-09-2013 |
20140260481 | METHOD AND APPARATUS FOR STRAIGHTENING METAL BANDS - The invention may relate, among other things, to a device for straightening a metal strip having two strip drives which are suitable together to apply tension on the metal strip to straighten the metal strip, wherein at least one of the strip drives is a linear drive, characterised in that the at least one linear drive has a positioning device such that the linear drive can be moved relative to the longitudinal axis of the device. | 09-18-2014 |
20150306648 | LEVELER EQUIPMENT AND SHEET MATERIAL FLATTENING METHOD - Leveler equipment includes a leveler body, a first roll cassette for a roller leveler, and a second roll cassette for a tension leveler. The roller leveler is formed when the first roll cassette is attached to the leveler body, and the tension leveler is formed when the second roll cassette is attached to the leveler body. | 10-29-2015 |
20160107216 | METHOD AND APPARATUS FOR STRAIGHTENING METAL BANDS - The invention may relate, among other things, to a device for straightening a metal strip having two strip drives which are suitable together to apply tension on the metal strip to straighten the metal strip, wherein at least one of the strip drives is a linear drive, characterised in that the at least one linear drive has a positioning device such that the linear drive can be moved relative to the longitudinal axis of the device. | 04-21-2016 |
072165000 | Including tier of roller-deflectors on carriers | 3 |
20090113973 | Methods and Apparatus to Drive Material Conditioning Machines - Apparatus and methods to drive material conditioning machines are described. An example apparatus includes a first plurality of work rolls to process a strip material and a second plurality of work rolls to process the strip material. The example apparatus also includes a motor to drive the second plurality of work rolls. The motor is to apply a first rolling torque to the second plurality of work rolls that is different than a second rolling torque applied to the first plurality of work rolls. | 05-07-2009 |
20120174644 | LEVELING MACHINE WITH MULTIPLE ROLLERS - A machine for leveling a strip of material contains a lower stationary back plate from which extends vertical beams located on either side of a longitudinal axis. A lower stationary leveling chassis and an upper leveling chassis are provided. Each chassis contains spaced apart rollers. An upper stationary back plate is rigidly secured to the upper end of each beam, and a moving coupling device couples the upper leveling chassis to the upper back plate. A device allows a vertical translational movement of the upper leveling chassis in relation to the upper stationary back plate between a rest position where the rollers of the upper leveling chassis are moved away from rollers of the lower leveling chassis and a leveling position where rollers of the upper leveling chassis are moved towards rollers of the lower leveling chassis and the strip is forced to travel along an undulating path. | 07-12-2012 |
20150360270 | Straightening machine - A straightening machine includes a frame supporting housings in which each housing receives a roll shaft rotatable about its axis. At least one first assembly includes a first guide defining a first convex surface and a first corresponding guided element defining a first concave surface. The first surfaces contact each other at a first contact surface. At least one second assembly includes a second guide defining a second convex surface and a second corresponding guided element defining a second concave surface. The second surfaces contact each other at a second contact surface. A device for rotating at least one roll shaft housing carries out a rotation being guided by the assemblies about a virtual axis transverse to a roll shaft axis, to compensate bending due to straightening of a product. | 12-17-2015 |