EP1831116A1 - Procede et dispositif pour diviser une plaque de verre brut revetue en vitres individuelles - Google Patents

Procede et dispositif pour diviser une plaque de verre brut revetue en vitres individuelles

Info

Publication number
EP1831116A1
EP1831116A1 EP05807894A EP05807894A EP1831116A1 EP 1831116 A1 EP1831116 A1 EP 1831116A1 EP 05807894 A EP05807894 A EP 05807894A EP 05807894 A EP05807894 A EP 05807894A EP 1831116 A1 EP1831116 A1 EP 1831116A1
Authority
EP
European Patent Office
Prior art keywords
glass sheet
transport
raw glass
along
raw
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP05807894A
Other languages
German (de)
English (en)
Inventor
Stefan Acker
Jürgen Weisser
Ronny Ullmann
Dieter Riepe
Bernhard Hoetger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jenoptik Automatisierungstechnik GmbH
Original Assignee
Jenoptik Automatisierungstechnik GmbH
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 Jenoptik Automatisierungstechnik GmbH filed Critical Jenoptik Automatisierungstechnik GmbH
Publication of EP1831116A1 publication Critical patent/EP1831116A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/03—Glass cutting tables; Apparatus for transporting or handling sheet glass during the cutting or breaking operations
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/033—Apparatus for opening score lines in glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/09—Severing cooled glass by thermal shock
    • C03B33/091—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam

Definitions

  • the invention relates to a method and a device for dividing a single-coated, thin rectangular or square raw glass sheet into rectangular or quadrati ⁇ cal individual glass panes.
  • Splitting means scoring a raw glass panel along imaginary parting lines defined according to a computer-aided dividing contour with a computer-controlled scoring device and breaking or separating in the scoring lines into individual glass panes.
  • the invention is particularly concerned with the splitting of so-called PDP raw glass panels (plasma display panels) or TFT raw glass panels (thin film transistor).
  • PDP raw glass panels plasma display panels
  • TFT raw glass panels thin film transistor
  • Coatings for PDP glass panes have a layer construction comprising a plurality of individual layers, which are first applied to the glass and solidified in a subsequent heat treatment step and are thereby connected to one another and to the glass pane. Before this tempering step, the coating is very sensitive and can be easily damaged by mechanical action.
  • the object of the invention is to provide a method and a device with which, in particular in the case of the mentioned problem glasses, straight-line and smooth, planar, surface-free fracture-free fracture edge surfaces can be produced, without the coating being impaired.
  • Figure 1 a plan view of a coated raw glass sheet with dividing lines
  • Figure 2a-g schematically the inventive method in the
  • Figure 3a-j schematically the inventive method in the
  • the raw glass panels 1 are already prepared for splitting as shown in FIG. 1 by virtue of the fact that the coating in a stripping track 15 is not present on both sides along virtual parting lines 3, 4, 5, 6, 11, 12, 13.
  • the width of the track 15 is expediently 5 to 10 mm, in particular 6 to 8 mm, wherein the respective dividing line is expediently located in the middle of the track 15 Quer ⁇ .
  • the computer-detected division used according to the invention provides for narrow edge regions 7, 8, 9, 10 of the raw glass panel 1 to be scored and broken off, so that these edge areas are machined away with rough coarse outer edges and the remaining areas of the raw glass panel 1 desired individual glass panes 14 can be generated.
  • the individual glass panes 14 each have a rectangular or square coating field 2, which is framed by a partial area, for example one half, of the respective tracks 15.
  • the inventive method, as well as the distribution device according to the invention work with horizontally behind each other at a small distance 30 of, for example, 5 - 20 cm angeordne ⁇ th transport elements 16, 20, the transport surfaces 17, 21 lie in a horizontal plane ( Figure 2a, b).
  • An infeed element 16 and a removal element 20 are each driven forwards and backwards separately (for example, arrow direction 19, 19a, 18).
  • Each transport element 16, 20 may consist of one or more wide transport belts arranged next to one another or of a plurality of adjacent transport belts. Equally usable are transport rollers or transport roller tracks.
  • a movable laser separating device 22 is arranged below the plane of the transport surfaces 17, 21 or the plane of the upper runs 17, 21, which generates a laser beam directed into the gap 30. The laser separating device 22 can be moved up and down, and can be moved transversely to the transport direction 19, 19a below the plane of the upper runs 17, 21.
  • the laser separating device 22 also has a cooling device which can be adjusted in the distance to the laser beam and which cools the points acted upon by the laser beam along a parting line immediately thereafter.
  • the cooling device has, for example, an aerosol blowing device for blowing an air-water mixture.
  • an upwardly and downwardly movable upper crushing bar 24 which extends parallel to the gap 30 and which has a conically tapered crest vertex edge of, for example, 1-4 mm, in particular 2 - 3 mm wide.
  • the upper breaker bar wood or a medium-hard plastic, which does not damage the glass sheet 1 and ensures a defined application of force.
  • a lower crushing bar 26 which can be moved into the gap and extends parallel to the upper crushing bar is provided whose crest-vertex edge is not vertically below the crushing crest edge of the upper crushing bar but in the transport direction 19 is arranged offset when the lower break bar is in its working position ( Figure 2b).
  • the lower break bar 26 can be moved in the transport direction 19a into a position in which it is arranged offset in the transport direction 19a.
  • a second lower break bar (not shown).
  • the removal belt 20 is arranged tiltable upwards about a horizontal axis which is expediently transverse to the transport direction 19 in the region of a parting line 12 (FIG. 2 d) or preferably vertically beneath or next to a parting line 12, and means for appropriate Kip ⁇ pen and driving back are provided.
  • the raw glass sheet 1 is placed on the feed belt 16. By circulating the Antransportbands 16 in the direction of rotation 18, the raw glass panel 1 is moved in the transport direction 19. The raw glass panel 1 is transported until the parting line 3 comes to rest over the gap 30 (FIG. 2a). This is done by means of positioning stops (not shown), which stop the raw glass panel 1.
  • the laser cutting device 22 for scribing the raw glass sheet 1 is moved along the dividing line 3 transversely to the transport direction 19, wherein the points of the raw glass sheet 1 acted upon from below by the laser beam are heated along the dividing line 3.
  • the immediately following cooling device blows an aerosol of air and water on the exposed areas.
  • the resulting tensile stresses cause along the dividing line 3 a predetermined breaking point.
  • the upper crushing bar 24 is pressed with its crest-vertex edge onto the dividing line 3 on the upper side of the raw glass sheet 1, wherein the coating field 2 is not touched (FIG. 2b).
  • the lower crushing bar 26 is raised in the edge region 7 against the underside of the glass sheet 1 until the edge region. 7 along the predetermined breaking point upwards breaks ( Figure 2c and 3b).
  • the edge region 7 drops down and is removed via guide plates.
  • the positioning stops are repositioned according to the desired dimensions of the individual glass pane 14 to be separated out of the raw glass panel 1. Subsequently, the feed belt 16 and the removal belt 20 are moved in the direction of circulation 18, so that the raw glass panel 1 is transported in the transport direction 19 as far as the stop against the positioning stops.
  • the raw glass panel 1 comes to lie with the dividing line 12 over the Laser ⁇ separating device 22 ( Figure 2d).
  • the raw glass panel 1 is flat both on the strand 17 of the Antransportbandes 16 and on the strand 21 of the discharge belt 20.
  • the removal conveyor 20 is tilted upwards about a rotation axis which lies in the parting line 12.
  • the discharge conveyor 20 moves in the direction of rotation 18, so that during bending and at least until breakage, a tensile force directed perpendicular to the bending axis away from the dividing line is exerted and immediately after breaking the raw glass panel 1, a resulting first glass sheet 27 in a transport direction 20a is moved away from the remaining raw glass panel 1 (FIGS.
  • a resulting edge 28 of the remaining raw glass sheet 1 and a resulting edge 29 of the first glass sheet 27 thus do not rub against each other like a blade, but remain intact because of the intermediate space 30a which immediately forms between them.
  • the Discharge belt 20 is then tilted back to its initial position (FIG. 2g).
  • the axis of rotation in the plane of the first glass pane 27 is located a few millimeters from the dividing line parallel to it, so that the breaklines 28, 29 remove from each other even more quickly after breaking.
  • a tensile stress is also exerted on the remaining raw glass panel 1 in a transport direction 16a by driving the supply belt 16 against the direction of rotation 18.
  • the severed first glass sheet 27 is now rotated by 90 ° in the horizontal (Figure 3g) and further processed as shown in Figures 3h-j.
  • the edge region 10 is removed with the help of the upper and lower crushing bar 24, 26 similar to the above with reference to Figures 2a-c ( Figure 3h), then a first single glass pane 14 by tilting the discharge conveyor 20 while rotating in Um ⁇ running direction 18 to generate smooth break edges separated ( Figure 3i).
  • the edge region 9 is separated from the remaining glass pane (FIG. 3i) by first transporting the glass pane onto the removal conveyor 20. Subsequently, in analogy to the procedure for breaking off the boundary regions 7, 10, the upper breaking strip 24 is now however broken in combination with the second lower breaking strip.
  • the lower break bar 26 is displaced in the transport direction 19a until it is in a position below the edge area 9, from where it is lifted against the glass pane.
  • the separating steps take place, as shown in FIGS. 3g-j, on an additional splitting device, which is designed in accordance with the first one. This advantageously increases the throughput.
  • predetermined breaking points are introduced by tensile stresses along several or along all parting lines 3, 4, 5, 6 before the edge regions 7, 8, 9, 10 are broken along the parting lines.
  • the coating remains undamaged.
  • the coating is solidified, for example in the case of a PDP raw glass panel.
  • the method according to the invention and the device according to the invention are not limited to dividing coated thin glass sheets, but can be used for all glass sheets which are to be divided into individual glass panes to obtain smooth, break-free break edge surfaces.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Thermal Sciences (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

La présente invention concerne un procédé pour diviser une plaque de verre brut mince revêtue sur un côté en vitres individuelles présentant un champ de revêtement limité. Sur sa face revêtue, ladite plaque de verre brut présente des traces dépourvues de couche le long de lignes de séparation virtuelles. Selon cette invention, a) de la chaleur est produite dans le verre sur la face non revêtue de la plaque de verre brut, le long d'une ligne de séparation, au moyen d'un faisceau laser, puis, immédiatement après, l'endroit chauffé est trempé, de manière à produire des contraintes de traction le long de la ligne de séparation, b) immédiatement après, une contrainte de flexion dans la zone de la face non revêtue est appliquée sur la ligne de séparation jusqu'à la rupture, au moyen d'une flexion en particulier autour d'un axe horizontal parallèle à la ligne de séparation dans la zone de celle-ci, puis c) lors de la flexion au moins jusqu'à la rupture, une force de traction perpendiculaire à l'axe de flexion est exercée à partir de la ligne de séparation dans une direction opposée à celle-ci.
EP05807894A 2004-11-05 2005-11-04 Procede et dispositif pour diviser une plaque de verre brut revetue en vitres individuelles Withdrawn EP1831116A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410053598 DE102004053598A1 (de) 2004-11-05 2004-11-05 Verfahren und Vorrichtung zum Aufteilen einer Rohglastafel in Einzelglasscheiben
PCT/DE2005/002000 WO2006048011A1 (fr) 2004-11-05 2005-11-04 Procede et dispositif pour diviser une plaque de verre brut revetue en vitres individuelles

Publications (1)

Publication Number Publication Date
EP1831116A1 true EP1831116A1 (fr) 2007-09-12

Family

ID=35512000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05807894A Withdrawn EP1831116A1 (fr) 2004-11-05 2005-11-04 Procede et dispositif pour diviser une plaque de verre brut revetue en vitres individuelles

Country Status (3)

Country Link
EP (1) EP1831116A1 (fr)
DE (1) DE102004053598A1 (fr)
WO (1) WO2006048011A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016104273B4 (de) * 2016-03-09 2021-02-04 Hegla Gmbh & Co. Kg Verfahren und Vorrichtung zur Behandlung von Flachglaseinheiten an einer glasverarbeitenden Anlage und Glasverarbeitende Anlage

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088255A (en) * 1976-10-29 1978-05-09 Ppg Industries, Inc. Apparatus for opening lateral scores in moving glass sheets
DE2657757C2 (de) * 1976-12-20 1984-08-02 Bottero S.P.A., Cuneo-Spinetta Vorrichtung zum Zuschneiden von Verbundglasplatten
AT403688B (de) * 1992-11-02 1998-04-27 Lisec Peter Verfahren und vorrichtung zum schneiden von verbundglas
US5622540A (en) * 1994-09-19 1997-04-22 Corning Incorporated Method for breaking a glass sheet
JP3886563B2 (ja) * 1996-05-31 2007-02-28 三星ダイヤモンド工業株式会社 ガラススクライバー
DE10016628A1 (de) * 2000-04-04 2001-10-18 Schott Glas Verfahren zum Herstellen von kleinen Dünnglasscheiben und größere Dünnglasscheibe als Halbfabrikat für dieses Herstellen
DE10041519C1 (de) * 2000-08-24 2001-11-22 Schott Spezialglas Gmbh Verfahren und Vorrichtung zum Durchschneiden einer Flachglasplatte in mehrere Rechteckplatten
JP4436592B2 (ja) * 2001-06-28 2010-03-24 三星ダイヤモンド工業株式会社 脆性材料基板のブレイク装置
TWI226877B (en) * 2001-07-12 2005-01-21 Mitsuboshi Diamond Ind Co Ltd Method of manufacturing adhered brittle material substrates and method of separating adhered brittle material substrates
JP2004026545A (ja) * 2002-06-24 2004-01-29 Nakamura Tome Precision Ind Co Ltd 基板の割断加工装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006048011A1 *

Also Published As

Publication number Publication date
WO2006048011A1 (fr) 2006-05-11
DE102004053598A1 (de) 2006-05-11

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Inventor name: ACKER, STEFAN

Inventor name: ULLMANN, RONNY

Inventor name: HOETGER, BERNHARD

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Inventor name: WEISSER, JUERGEN

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