WO1993023185A1 - Methode de decoupage et d'empilage de toles __________ - Google Patents

Methode de decoupage et d'empilage de toles __________ Download PDF

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Publication number
WO1993023185A1
WO1993023185A1 PCT/NL1993/000103 NL9300103W WO9323185A1 WO 1993023185 A1 WO1993023185 A1 WO 1993023185A1 NL 9300103 W NL9300103 W NL 9300103W WO 9323185 A1 WO9323185 A1 WO 9323185A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveyor
sheet
speed
sheets
cutting
Prior art date
Application number
PCT/NL1993/000103
Other languages
English (en)
Inventor
Marc Christiaan Leon Van Dieren
Wilhelmus Adrianus Henricus Johanna Hermans
Original Assignee
Walker-Hagou B.V.
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 Walker-Hagou B.V. filed Critical Walker-Hagou B.V.
Publication of WO1993023185A1 publication Critical patent/WO1993023185A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/20—Storage arrangements; Piling or unpiling
    • B21D43/22—Devices for piling sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
    • B65H29/32—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from pneumatic, e.g. suction, carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed

Definitions

  • the invention relates to a method of cutting a metal strip into separate sheets and depositing the sheets onto a stack, wherein the metal strip is cut at a speed V l f whereafter the cut sheet is further conveyed on a first conveyor and is then transferred to a second conveyor from which the sheet is suspended and conveyed further up to a stack where the sheet is released from the conveyor and is lowered to the stack.
  • the object of the invention is to provide a method of the type mentioned in the preamble, in which this problem is removed in an effective way.
  • Fig. 3 is a speed-time diagram corresponding to that of Fig. 2 but of the second conveyor belt of the apparatus of
  • Fig. 5-7 are diagrams corresponding to those of Fig.
  • Fig. 1 shows an exemplary embodiment of an apparatus or cutting a metal strip into separate sheets and for depositing the sheets onto one or more stacks.
  • the metal strip is supplied at constant s s of a o the dischar e end of which a rotary shear 2 is arranged which is indicated only very schematically.
  • This rotary shear 2 is adapted to cut while the metal strip moves on with a constant speed so that the strip does not have to be stopped in order to be cut.
  • the rotary shear may be of a conventional design and does not form part of the present invention so that a detailed description thereof is omitted.
  • a single metal strip it is also possible to handle a plurality of narrow metal strips supplied side by side.
  • the apparatus comprises first of all a belt conveyor 4 supported by a frame 3 and including a plurality, for example 10, narrow conveyor belts 5 extending parallel with a small interspace. Of course a single conveyor belt may also be sufficient.
  • the conveyor belts 5 extend along rollers 6, 7 and are driven by one or more indexing motors 8 controlled by a microprocessor.
  • At the inlet end of the belt conveyor 4 there may be arranged short entrance belts 9 provided between the conveyor belts 5.
  • the belt conveyor 4 is preferably equipped with magnet means (not shown) ensuring that the sheets cut by the rotary shear 2 remain properly positioned on the conveyor belts 5 and do not slide when the conveyor belts 5 are accelerated or decelerated.
  • magnet means of the belt conveyor 4 adjustable at least in the area of the belt conveyor 4 directly after the shear 2 in order to reduce frictional forces on the sheet during the increased speed V 2 while the subsequent sheet of the metal strip moving at the speed V ⁇ is not yet cut.
  • a second belt conveyor 10 in this case consisting of two conveyor portions 11, 12 each of which may comprise a plurality, "for example five, parallel narrow conveyor belts 13, 14 respectively, extending at a small adjustable distance from each other.
  • the conveyor belts 13 and 14 extend along rollers 15, 16 and 17, 18, respectively, and are driven by one or more indexation motors 19, 20, respectively, controlled by a microprocessor.
  • Under the conveyor portions 11, 12 of the belt conveyor 10 are positioned four lifts 21-24 arranged behind each other and adjustable in vertical direction in order to maintain the upper side of a stack of sheets supported thereon at a constant distance to the under side of the lower conveying part of the conveyor belts 13, 14. Transverse to the direction of conveyance of the belt conveyor 10 7 the lifts 21-24 have a device for supplying empty pallets on which sheets may be stacked and for discharging full pallets.
  • the belt conveyors 4 and 10 overlap some distance so that the sheets supplied by the belt conveyor 4 may be transferred to the belt conveyor 10 without the risk of falling off, the sheets being conveyed further, suspended from said belt conveyor 10.
  • This suspended transport is enabled by the arrangement of magnets above the lower conveying parts of the conveyor belts 13 and 14 so that the sheets are magnetized through the conveyor belts 13, 14 and hence adhere to the belt conveyor 10.
  • the release of the separate sheets from the belt conveyor 10 could be effected by making the magnets switchable so that the sheets fall down by gravity.
  • push off means of which a great number is distributed over the length of the belt conveyor 10 and also over the width thereof so that push off means are provided between all adjacent conveyor belts.
  • These push off means are adapted to forcibly release the sheet or sheets suspended from the belt conveyor 10 so that both a quick and reliable operation is effected. Depending on the size of the sheets to be pushed off, a corresponding number of push off means is energized.
  • the belt conveyor 10 In order to obtain a stacking of sheets on the corresponding lifts 21-24 which is as accurate and cautious as possible, the belt conveyor 10 according to the invention is stopped for releasing the sheets so that the sheets may be pushed off vertically downwardly without any horizontal speed. Since the supply of sheets is taking place continuously, however, as a result of the supply conveyor " 1 supplying the metal strip 1 at constant speed, the belt conveyors 4 and 10 should be controlled such that the continuous supply at the inlet end of the belt conveyor 4 may be converted into a discontinuous discharge of sheets to the lifts 21-24.
  • the invention proposes to drive the first belt to the supply speed of the conveyor 1 and a higher speed V 2 , while the speed of the second belt conveyor 10 varies between the higher speed V « and a speed 0 when the sheets are pushed off.
  • the speed of the first belt conveyor 4 should be equalled to V j ⁇ when a sheet is cut, while the speeds of both belt conveyors 4 and 10 should be the same when the sheets are transferred between them.
  • Example 1 In the embodiment shown in Fig. 1 and 1A and having discretely distributed push off means it is important for an accurate stacking operation to allow the push off means 25 to engage the sheet to be pushed off centrically or symmetrically. This is particularly true for shorter sheets.
  • V ⁇ 1.667 m/s. This results in a cycle time a stacking speed of 54.55 sheets/min.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Specific Conveyance Elements (AREA)

Abstract

Méthode permettant de découper une bande de métal en tôles distinctes et de déposer ces tôles en une pile, le découpage s'effectuant à une vitesse (V1). La tôle découpée est ensuite acheminée sur un premier convoyeur puis transférée sur un deuxième convoyeur à partir duquel elle est suspendue et acheminée vers une pile, où elle est libérée du convoyeur pour être déposée sur cette pile. Lors du découpage de chaque tôle, le premier convoyeur est entraîné à la vitesse (V1), et le deuxième convoyeur est arrêté pour déposer une tôle sur la pile. Après les opérations de découpage et de libération, respectivement, de chaque tôle, l'un et l'autre convoyeurs sont accélérés jusqu'à une vitesse (V2) supérieure à la vitesse (V1). Chaque tôle n'est transférée du premier au deuxième convoyeur que lorsque les deux convoyeurs sont entraînés à des vitesses égales.
PCT/NL1993/000103 1992-05-20 1993-05-19 Methode de decoupage et d'empilage de toles __________ WO1993023185A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9200883 1992-05-20
NL9200883A NL9200883A (nl) 1992-05-20 1992-05-20 Werkwijze voor het knippen en stapelen van metaalplaten.

Publications (1)

Publication Number Publication Date
WO1993023185A1 true WO1993023185A1 (fr) 1993-11-25

Family

ID=19860818

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1993/000103 WO1993023185A1 (fr) 1992-05-20 1993-05-19 Methode de decoupage et d'empilage de toles __________

Country Status (2)

Country Link
NL (1) NL9200883A (fr)
WO (1) WO1993023185A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1072548A2 (fr) * 1999-07-29 2001-01-31 LTG Mailänder GmbH Dispositif pour empiler des articles plats
WO2010085486A1 (fr) * 2009-01-20 2010-07-29 Automatic Feed Company Découpage au laser à partir d'un système de convoyeur de feuillard enroulé
CN103874560A (zh) * 2011-10-10 2014-06-18 通快机床两合公司 由板形材料制造工件的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1815651A1 (de) * 1968-12-19 1970-07-09 Siemag Maschinen U Stahlbau Ne Vorrichtung zum Stapeln von Blechen auf einem Hubtisch
EP0340065A1 (fr) * 1988-04-27 1989-11-02 Dujardin Montbard Somenor Procédé et installation pour l'empilage de flans produits par une machine de découpage notamment à partir d'une bande de tôle
EP0426259A2 (fr) * 1990-04-06 1991-05-08 Walker-Hagou B.V. Dispositif pour convoyer et déposer des articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1815651A1 (de) * 1968-12-19 1970-07-09 Siemag Maschinen U Stahlbau Ne Vorrichtung zum Stapeln von Blechen auf einem Hubtisch
EP0340065A1 (fr) * 1988-04-27 1989-11-02 Dujardin Montbard Somenor Procédé et installation pour l'empilage de flans produits par une machine de découpage notamment à partir d'une bande de tôle
EP0426259A2 (fr) * 1990-04-06 1991-05-08 Walker-Hagou B.V. Dispositif pour convoyer et déposer des articles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1072548A2 (fr) * 1999-07-29 2001-01-31 LTG Mailänder GmbH Dispositif pour empiler des articles plats
EP1072548A3 (fr) * 1999-07-29 2001-10-17 LTG Mailänder GmbH Dispositif pour empiler des articles plats
WO2010085486A1 (fr) * 2009-01-20 2010-07-29 Automatic Feed Company Découpage au laser à partir d'un système de convoyeur de feuillard enroulé
US8471175B2 (en) 2009-01-20 2013-06-25 Lasercoil Technologies, Llc Laser blanking from coil strip profile conveyor system
US8841578B2 (en) 2009-01-20 2014-09-23 Lasercoil Technologies, Llc Method for operating a laser blanking system for cutting a blank from a stock material
CN103874560A (zh) * 2011-10-10 2014-06-18 通快机床两合公司 由板形材料制造工件的方法
CN103874560B (zh) * 2011-10-10 2016-03-09 通快机床两合公司 由板形材料制造工件的方法

Also Published As

Publication number Publication date
NL9200883A (nl) 1993-12-16

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