WO2015139786A1 - Appareil de manipulation de feuille pour appareil d'usinage de feuille - Google Patents

Appareil de manipulation de feuille pour appareil d'usinage de feuille Download PDF

Info

Publication number
WO2015139786A1
WO2015139786A1 PCT/EP2014/072902 EP2014072902W WO2015139786A1 WO 2015139786 A1 WO2015139786 A1 WO 2015139786A1 EP 2014072902 W EP2014072902 W EP 2014072902W WO 2015139786 A1 WO2015139786 A1 WO 2015139786A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
magnetic flux
magnetic
coil
handling apparatus
Prior art date
Application number
PCT/EP2014/072902
Other languages
English (en)
Inventor
James Anthony Graham
Original Assignee
Crabtree Of Gateshead 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 Crabtree Of Gateshead Limited filed Critical Crabtree Of Gateshead Limited
Publication of WO2015139786A1 publication Critical patent/WO2015139786A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00—Feed tables
    • B65H11/007—Feed tables with front stop arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/101—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting on the edge of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/13—Actuating means linear magnetic, e.g. induction motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the present invention relates to a sheet handling apparatus, and relates particularly, but not exclusively, to a metal sheet handling apparatus for use in a metal sheet printing or coating apparatus.
  • any significant deviation of the sheet from perfect rectangular shape can cause the front edge of the sheet to move laterally relative to front lays controlling the position of the front edge of the sheet. This in turn can create disturbances and destabilising torques on the sheet, which again can adversely affect registration accuracy and cause distortion of the sheet, thereby causing a
  • a sheet handling apparatus for handling a sheet of material in a sheet processing apparatus, the sheet handling apparatus comprising: - at least one engaging portion for engaging an edge of a sheet of material being fed in a feeding direction relative to a sheet processing component of a sheet processing apparatus ; and
  • magnetic flux generating means for generating magnetic flux passing through an edge region of the sheet of material such that a first magnetic force is applied to said sheet to urge said sheet towards at least one said engaging portion.
  • the magnetic flux generating means may be adapted to generate magnetic flux passing through an edge region of said sheet such that opposed second and third magnetic forces are applied to said sheet in a direction transverse to a surface of said sheet.
  • the magnetic flux generating means may be adapted to provide at least one pair of first magnetic poles of a first polarity, and at least one second pole of a second polarity, opposite to said first polarity, such that magnetic flux passing from a said first magnetic pole to a said second magnetic pole passes through said sheet.
  • the magnetic flux generating means may have a magnetic flux concentrating portion for concentrating magnetic flux therein and defining at least one pair of said first poles and at least one said second pole. At least one pair of said first magnetic poles may be arranged such that said sheet can pass therebetween.
  • This provides the advantage of enabling a strong attractive force, and substantially equal and opposite forces in a direction transverse to a plane of the sheet, to be applied to the sheet by means of a compact construction.
  • the magnetic flux generating means may comprise at least one first coil and at least one second coil.
  • At least one said first coil may be arranged in use on a first side of said sheet and at least one said second coil may be arranged in use on a second side of said sheet
  • This provides the advantage of enabling substantially equal and opposite forces to be applied to the sheet in a direction transverse to a plane of the sheet by means of an apparatus of simplified construction.
  • At least one said first coil and at least one said second coil may be connected in parallel.
  • This provides the advantage of simplifying electrical control of the apparatus .
  • the apparatus may further comprise mechanical gripper means for gripping said sheet.
  • a sheet processing apparatus including at least one sheet handling apparatus as defined above. At least one said sheet handling apparatus may be adapted to apply a force to said sheet adjacent a side edge thereof relative to a feeding direction of the sheet.
  • At least one said sheet handling apparatus may be adapted to apply a force to said sheet adjacent a rear edge thereof relative to a feeding direction of the sheet.
  • At least one said sheet handling apparatus may be adapted to apply a force to said sheet adjacent a leading edge thereof relative to a feeding direction of the sheet.
  • This provides the advantage of enabling the sheet to be applied to a sheet processing component of a sheet processing apparatus under tension, thereby minimising the risk of buckling of the sheet, thereby maximising print quality.
  • the advantage is further provided that the sheet is rapidly and securely located on the sheet processing apparatus, thereby minimising any deterioration of print quality.
  • Figure 1 is a schematic view of a sheet processing apparatus embodying the present invention
  • Figure 2 is a cross sectional view of a first sheet handling apparatus of the sheet processing apparatus of Figure 1 ;
  • Figure 3 is a schematic side view of the sheet handling apparatus of Figure 2 in operation applying force to a sheet of material;
  • Figure 4 is a perspective front and side view of the sheet handling apparatus of Figure 2;
  • Figure 5 is a perspective side and rear view of the sheet handling apparatus of Figure 2;
  • Figure 6 is a perspective view of a second sheet handling apparatus of the sheet processing apparatus of Figure 1 ;
  • Figure 7 is a plan view of the second sheet handling apparatus of Figure 6 with a gripper blade thereof removed;
  • Figure 8 is a perspective view of a magnet and coil assembly of the apparatus of Figures 6 and 7.
  • a sheet processing apparatus such as a sheet printing apparatus or a sheet coating
  • apparatus embodying the present invention applies ink or coating material to a metal sheet 4 at a gap 6 between a blanket cylinder 8 and an impression cylinder 10.
  • Registration of a leading edge 14 of the sheet 4 with the impression cylinder 10 is achieved by means of a pair of front lay devices 16 with accompanying gripper blades 60
  • a first sheet handling apparatus in the form of a sidelay assembly 20 embodying the present invention applies a tensile attractive force to each side edge 24 of the sheet 4 to limit movement of the sheet 4 in a direction transverse to arrow A, while allowing movement of the sheet 4 in the direction of arrow A.
  • the sheet 4 is fed to the gap 6 between the rollers 8, 10 by means of a feeder apparatus including pushers 28, 30.
  • each sidelay assembly 20 is controlled by controller 22 and has an upper sheet guide plate 32 and a lower sheet guide plate 34 forming a tapering gap 36 for location of the side edge 24 of the sheet 4 therein such that the sheet 4 moves out of the plane of the drawing in Figures 2 and 3.
  • the sidelay assembly 20 is provided with a soft iron core 38 around which a first coil 40 and a second coil 42 are wound, the first 40 and second 42 coils being connected in parallel such that they generate generally identical magnetic flux.
  • the soft iron core 38 defines a pair of north poles 44, 46 which face each other through respective apertures 48, 50 in the upper 32 and lower 34 guide plates, and a south pole 52 adjacent to which a pair of registration rollers 54 is rotatably mounted.
  • the first 40 and second 42 coils are energised, they produce respective magnetic fluxes 56, 58 passing from their
  • the sidelay assemblies 20 also control the pushing force of the feeder apparatus 28, 30, improving the
  • the pushers 28, 30 can be replaced by a sheet handling assembly 20 as shown in Figures 2-5 which applies a gripping force to rear edge 58 ( Figure 1) of the sheet 4, thereby removing the need for complex friction controlling devices to prevent the sheet 4 from moving away from the pushers 28, 30.
  • the front lay device 16 is a complete assembly that is pivoted about pivot axis 62.
  • a soft iron core 66 around which a first coil 68 and a second coil 70 are wound, is mounted to the body 64 and defines a pair of north poles 72 and a south pole 74 arranged between the north poles 72.
  • the gripper assembly 16 is pivoted about pivot axis 62 to expose a slot 76 at the level of the poles 72, 74 at the upper part of inclined surfaces 78.
  • the leading edge of the sheet 4 is attracted towards the poles 72, 74 and slides over inclined surfaces 78 to come into abutment with carbide tips 80 arranged between respective north 72 and south 74 pole pairs.
  • the gripper assembly 16 is then pivoted to mechanically grip the sheet 4 against the impression cylinder 10, ready to be printed in the correct
  • the sidelay assembly 20 shown in Figure 1 as stationary relative to the frame of the apparatus 2 could move with the sheet 2 such that there is zero relative velocity between the sheet 4 and the sidelay assembly 20.
  • the use of the sheet handling apparatus embedded into front lay devices 16 enables the feeder apparatus 28, 30 to be dispensed with, thereby minimising the risk of buckling of the sheet and maintaining a positive force during register, wherein the magnet can be switched off before sheet release.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

Appareil de manipulation de feuille (20) pour manipuler une feuille métallique (4) dans un appareil d'usinage de feuille métallique. L'appareil de manipulation de feuille comprend des rouleaux (54) pour venir en contact avec un bord de la feuille et des bobines (40, 42) pour générer un flux magnétique passant à travers une zone périphérique de la feuille afin de pousser la feuille vers les rouleaux.
PCT/EP2014/072902 2014-03-18 2014-10-24 Appareil de manipulation de feuille pour appareil d'usinage de feuille WO2015139786A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14160570.9 2014-03-18
EP14160570.9A EP2921441B1 (fr) 2014-03-18 2014-03-18 Appareil de manipulation de feuilles pour appareil de traitement de feuille

Publications (1)

Publication Number Publication Date
WO2015139786A1 true WO2015139786A1 (fr) 2015-09-24

Family

ID=50289524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/072902 WO2015139786A1 (fr) 2014-03-18 2014-10-24 Appareil de manipulation de feuille pour appareil d'usinage de feuille

Country Status (2)

Country Link
EP (1) EP2921441B1 (fr)
WO (1) WO2015139786A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018126049B4 (de) * 2018-10-19 2020-08-27 Koenig & Bauer Ag Tafelförmiges Substrat verarbeitende Maschine mit einer Anlage, Verfahren zum Einrichten und Verfahren zum Betreiben einer Anlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752310A2 (fr) * 1994-12-21 1997-01-08 Otto Kunzi Margeur pour des imprimeuses et des machines de lacquage de tÔles
EP0955257A2 (fr) * 1998-05-04 1999-11-10 LTG Holding GmbH Procédé et dispositif pour alimenter des produits en feuilles
US7011305B2 (en) * 2000-05-02 2006-03-14 Heidelberger Druckmaschinen Ag Device and method for aligning sheets
EP2147879A2 (fr) * 2008-07-26 2010-01-27 KBA-MetalPrint GmbH Dispositif et procédé d'alignement des bords avant et latéraux d'un produit en forme de tableau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752310A2 (fr) * 1994-12-21 1997-01-08 Otto Kunzi Margeur pour des imprimeuses et des machines de lacquage de tÔles
EP0955257A2 (fr) * 1998-05-04 1999-11-10 LTG Holding GmbH Procédé et dispositif pour alimenter des produits en feuilles
US7011305B2 (en) * 2000-05-02 2006-03-14 Heidelberger Druckmaschinen Ag Device and method for aligning sheets
EP2147879A2 (fr) * 2008-07-26 2010-01-27 KBA-MetalPrint GmbH Dispositif et procédé d'alignement des bords avant et latéraux d'un produit en forme de tableau

Also Published As

Publication number Publication date
EP2921441A1 (fr) 2015-09-23
EP2921441B1 (fr) 2016-07-27

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