WO2012143112A1 - Appareil d'ébavurage latéral permettant d'ébavurer les bords longitudinaux d'une bande de métal - Google Patents

Appareil d'ébavurage latéral permettant d'ébavurer les bords longitudinaux d'une bande de métal Download PDF

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Publication number
WO2012143112A1
WO2012143112A1 PCT/EP2012/001634 EP2012001634W WO2012143112A1 WO 2012143112 A1 WO2012143112 A1 WO 2012143112A1 EP 2012001634 W EP2012001634 W EP 2012001634W WO 2012143112 A1 WO2012143112 A1 WO 2012143112A1
Authority
WO
WIPO (PCT)
Prior art keywords
trimming
strip
width
scrap
steering unit
Prior art date
Application number
PCT/EP2012/001634
Other languages
English (en)
Inventor
Praveen Venugopalan THAMPI
Christopher Ian LOGAN
Paul Anthony STIRLING
Andrew Thomas
Carl Kevin BANFIELD
Brian Nicholas RAGOBAR
Original Assignee
Tata Steel Uk Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tata Steel Uk Limited filed Critical Tata Steel Uk Limited
Publication of WO2012143112A1 publication Critical patent/WO2012143112A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D19/00—Shearing machines or shearing devices cutting by rotary discs
    • B23D19/04—Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs
    • B23D19/06—Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs with several spaced pairs of shearing discs working simultaneously, e.g. for trimming or making strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation

Definitions

  • the present invention relates to a side trimming apparatus for trimming longitudinal edges of a metal strip resulting in a trimmed metal strip having a constant width over its length.
  • a side trimming apparatus comprises basically a conveyor means for conveying the metal strip in a machine direction. During movement the strip is trimmed by a trimming means for trimming both longitudinal edges by removing side scrap.
  • the trimming means usually comprise trimming blades which are arranged at a fixed position, that is predetermined by the width of the trimmed strip that is to be achieved. In order to achieve a neatly trimmed edge the side scrap should not be too narrow, otherwise excessive tearing may result in an irregularly trimmed edge. Therefore the strip is centred against the trimming means, e.g. by measuring the edge positions using sensors, which is used as a control feedback for actuating a steering unit. This steering unit gradually or stepwise displaces the moving strip in its width direction, i.e. perpendicular to the machine direction.
  • edge positions are determined using line scan cameras and associated light sources. These are positioned a few metres away upstream from the trimming blades.
  • the scanned positions are fed to a steering module, comprising a controller for controlling the actual steering unit, e.g. a table or the like. Due to the mutual positions there are lags and inaccuracies associated with this known apparatus. As a result steering accuracy is at most within a few mm of the centre line of the strip.
  • typical customer tolerances regarding strip width are -0 mm and +1 mm with edge quality being vital. If a trimmed strip does not meet the specifications, reprocessing is necessary, but costly.
  • due to the enormous volume of strip it would be economically interesting to approach the upper tolerance limit as much as possible, as the strip is sold per tonne.
  • the side trimming apparatus for trimming longitudinal edges of a metal strip resulting in a trimmed strip having a constant width comprises a conveyor means for conveying the metal strip in a machine direction, a trimming means for trimming both longitudinal edges by removing side scrap, a steering unit for mutually displacing the strip and the trimming means in a direction perpendicular to the machine direction, a control means for controlling movement of the steering unit, wherein the control means comprise a side scrap width measurement means for measuring the width of either side scrap removed at the trimming means, and a computer means for conversion of width data received from the side scrap width measurement means into a steering signal for the steering unit.
  • the conveyor means are configured for conveyance of the metal strip, e.g. derived from preceding processes like rolling and/or tempering, from a feed end for introducing the metal strip to be trimmed, past the steering unit, measurement means and trimming means, in that order, towards a discharge end, where the trimmed strip exits the side trimming apparatus for further processing, like coiling.
  • the conveyor means comprise at least one driven roll, and a number of guiding rolls and idle rolls.
  • the side trimming apparatus also comprises a steering unit. This steering unit operates such that the mutual position of the strip and the trimming means is adjusted in the width direction of the strip, based on data obtained from the side scrap width measurement means as will be explained in more detail below. E.g.
  • the strip can be displaced upstream from stationary trimming means. Steering units of this kind are well known in the art and commercially available e.g. from EMG Automation GmbH. It is also possible to adjust the width position of the trimming means, while maintaining the original position of the moving strip. The width of the trimmed strip is not changed.
  • the trimming means can comprise pairs of (rotatable) cutting blades at both sides of the strip, wherein each pair comprises an upper cutting blade and a lower one. The strip runs between the upper and lower blades. Typically the trimming means would notch the strip first and then move into the desired width according to the specifications. Once in position, the trimming means remain in this fixed position. The position is only altered for a following different notch or coil.
  • a side scrap width measurement means for measuring the width of either side scrap removed at the trimming means. Arranging the measurement means upstream from the trimming means and determining the actual scrap side width where scrap is still under tension allows keeping the side scrap widths equal at both strip sides which is favourable in view of edge quality. Moreover, measuring side scrap widths gives an insight in the overage of the preceding processes. According to the invention the measured side scrap widths are used as feedback to control the steering unit.
  • the side scrap width measurement means is calibrated against the (outer) cutting edge of the trimming means. In this way an accurate measurement of strip overlap to the blade cut, i.e. the side scrap width, is obtained, which offers a more precise feedback for controlling the steering unit.
  • a preferred measurement means is a so called LED micrometer. This kind of meters are commercially available, e.g. from Keyence Corporation.
  • the computer means are configured in such a way that the widths of either side scrap are mutually compared thereby establishing a difference factor and if the difference factor is above a predetermined threshold value the steering unit is actuated such that the side scrap widths are levelled.
  • the computer means of the control means control the steering unit with an accuracy within a range of 1 mm. In this way the accuracy required by the customers is met.
  • the invention is further illustrated by reference to the attached drawing showing a diagrammatic representation of an embodiment of a scrap side width controlled side trimming apparatus according to the invention.
  • FIG. 1 an embodiment of a side trimming apparatus according to the invention is indicated in its entirety by reference numeral 10.
  • the apparatus 10 comprises a conveyor 12 comprising a number of driven rolls, guide rolls and idle rolls 14.
  • the conveyor 12 extends from a feed position 16, where strip 18 to be trimmed is introduced in the apparatus 10, to a discharge position 20, where the trimmed strip 18 leaves the apparatus 10.
  • the edges 22 of the strip 18 are trimmed in a trimming position 24.
  • trimming means indicated in its entirety by 26 is arranged.
  • the trimming means 26 comprise a set of cutting blades 28 at each edge 22.
  • the strip 18 runs between the upper cutting blades 28a and the lower cutting blades 28b.
  • the trimming means 26 remove at each edge 22 a side scrap part 30 having a side scrap width dl and dr respectively.
  • the side scrap width is measured by measurement means 32 that is arranged upstream of the trimmer means 26.
  • the measurement means 32 comprise LED micrometers near each edge 22.
  • the position of the cutting edge of an upper cutting blade 28a is used as a zero point for calibration.
  • the data obtained from the measurement means 32 are processed in controller means 34, such as a PLC.
  • the steering unit 36 causes a shift of the strip 18 in its cross direction to level the side scrap width dl and dr.
  • An alternative steering unit 38 for crosswise displacement of the trimmer means 26 with respect to the strip 18, such as a carriage on rail system, a hydraulic piston-cylinder assembly or tooth rack, controlled by control means 34 is also shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)

Abstract

La présente invention a trait à un appareil d'ébavurage latéral (10) permettant d'ébavurer les bords longitudinaux (22) d'une bande de métal (18) en vue d'obtenir une bande ébavurée qui est dotée d'une largeur constante (d), lequel appareil comprend un moyen de transport (14) permettant de transporter la bande de métal dans un sens machine, un moyen d'ébavurage (26) permettant d'ébavurer les deux bords longitudinaux en retirant une chute latérale (30), une unité de conduite (36) permettant de déplacer mutuellement la bande et le moyen d'ébavurage dans une direction perpendiculaire au sens machine, un moyen de commande (34) permettant de contrôler le mouvement de l'unité de conduite, lequel moyen de commande comprend un moyen de mesure de largeur de chute latérale (32) permettant de mesurer la largeur des deux chutes latérales retirées au niveau du moyen d'ébavurage, et un moyen de calcul permettant de convertir les données de largeur reçues en provenance du moyen de mesure de largeur de chute latérale en données de conduite à destination de l'unité de conduite.
PCT/EP2012/001634 2011-04-21 2012-04-16 Appareil d'ébavurage latéral permettant d'ébavurer les bords longitudinaux d'une bande de métal WO2012143112A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11003360 2011-04-21
EP11003360.2 2011-04-21

Publications (1)

Publication Number Publication Date
WO2012143112A1 true WO2012143112A1 (fr) 2012-10-26

Family

ID=44533461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/001634 WO2012143112A1 (fr) 2011-04-21 2012-04-16 Appareil d'ébavurage latéral permettant d'ébavurer les bords longitudinaux d'une bande de métal

Country Status (1)

Country Link
WO (1) WO2012143112A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110315133A (zh) * 2019-06-24 2019-10-11 张驰 一种铝制品切边装置
CN112203961A (zh) * 2018-05-28 2021-01-08 Sms集团有限公司 用于对带形材料覆层的真空覆层设备和方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662638A (en) * 1969-01-24 1972-05-16 Moeller & Neumann Gmbh Shearline for trimming plates and sheets, in particular heavy plates, by means of circular cutter means
DE2341621A1 (de) * 1973-08-17 1975-03-20 Sack Gmbh Maschf Vorrichtung zur genauen lagebestimmung und anordnung eines oder mehrerer baender, insbesondere baender aus metall, z.b. vor einer kreismesserschere
JPH08267309A (ja) * 1995-03-31 1996-10-15 Kawasaki Steel Corp 金属帯板のトリミング装置
EP1306154A1 (fr) * 2001-10-10 2003-05-02 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Procédé ainsi que dispositif pour cisailler des bandes, en particulier des bandes métalliques laminées à chaud

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662638A (en) * 1969-01-24 1972-05-16 Moeller & Neumann Gmbh Shearline for trimming plates and sheets, in particular heavy plates, by means of circular cutter means
DE2341621A1 (de) * 1973-08-17 1975-03-20 Sack Gmbh Maschf Vorrichtung zur genauen lagebestimmung und anordnung eines oder mehrerer baender, insbesondere baender aus metall, z.b. vor einer kreismesserschere
JPH08267309A (ja) * 1995-03-31 1996-10-15 Kawasaki Steel Corp 金属帯板のトリミング装置
EP1306154A1 (fr) * 2001-10-10 2003-05-02 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Procédé ainsi que dispositif pour cisailler des bandes, en particulier des bandes métalliques laminées à chaud

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112203961A (zh) * 2018-05-28 2021-01-08 Sms集团有限公司 用于对带形材料覆层的真空覆层设备和方法
US11814722B2 (en) 2018-05-28 2023-11-14 Sms Group Gmbh Vacuum-coating system, and method for coating a strip-type material
CN110315133A (zh) * 2019-06-24 2019-10-11 张驰 一种铝制品切边装置
CN110315133B (zh) * 2019-06-24 2020-09-15 诸暨市泓瑞机械配件厂 一种铝制品切边装置

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