DE10328617A1 - Method and device for marking flat glass panes - Google Patents

Abstract

The invention relates to a method and an apparatus for marking flat glass panes at a predetermined location with at least one mark using a marking device, the marking being carried out by machine on a glass roasting board to be broken up by cracking and breaking, which is broken into flat glass panes after being marked.

Description

The The invention relates to a marking method and a marking device for marking flat glass panes, in particular composite safety or single-pane safety glass panes with at least one license plate.

The The invention also relates to a device for marking flat glass panes.

Usually is e.g. a glass raw board or safety glass raw board on a Cutting table placed a cutting station of a cutting system. One on a cutting head arranged cutting tool which is connected to a cutting bridge on a Sled is placed on the surface of the glass roasting panel and programmatically driven such that the cutting tool Cutting cuts on the glass raw slab surface scratches. After completion a cutting pattern, the cutting tool is raised. The split Glass raw board will follow in crushing stations broken into glass panes, and the glass panes be for one further processing marked. All previous markings done on the broken single disc.

It there is already a labeling obligation of the function glasses. Under Functional glasses subject to labeling fall e.g. Laminated safety glass and tempered safety glass. The labeling must be after certain specifications according to certification criteria respectively. Among other things, it must have inspection numbers, manufacturing and product details contain.

Safety glass have to according to a for subareas already existing default. Based on the place of the plate on the safety glass recognizes a with the production process up to the installation of the disc in a building concerned Person or detecting device, for example, as the disc in the installation must be aligned.

The required alignment of the safety glass pane during installation its intended use should be based on the position of the license plate be recognizable because features such as e.g. the inner nature of safety glass, the orientation of the safety glass pane require, when installing the glass is not readily apparent are. The marking can also be used in particular for internal production scheduling and / or machine occupancy can be used.

A Known marking device has a table with fixed Reading marks on which a cut from a raw glass panel e.g. Safety glass pane is placed by hand. On the basis of a Reading mark is by hand Manipulation of the disc determines a location where a color stamp is placed on the safety glass to be marked. at another device of this kind is the safety glass pane Etched at the determined location or sandblasted.

Known is also a marking device with a laser device is working.

all known method adheres to the disadvantage that no such accurate Positioning the label is possible for orientation a mechanical further processing of the glass to the exact Alignment of the disc is usable.

The Position of the marking on the glass pane surface becomes typically defined at a glass corner, e.g. with a corner distance from 60 × 60 mm, made. The distance measure is However, not always there and depending on the installation requirement to others Job wanted be. For this purpose, the reading mark of the marking device be offset. The reading position of the marking is in particular the later one Glass installation position in front.

The current error rate, such as wrong position, wrong distance, wrong reading direction, is considerable. An incorrectly applied product identification can be considerable damage and additional costs. In addition, the label is currently very laborious and time consuming.

Of the Invention is based on the object, the current error possibilities to avoid the marking of flat glass panes and the To improve and simplify labeling in such a way that the Identify reliably can be done with little effort and in a relatively short time and executed so accurately that can even be a use of marking in a machine Further processing of the glass is possible.

These The object is achieved by the features of independent claims 1 and 19 solved. Advantageous developments of the invention are in the of these claims dependent Subclaims characterized.

The invention provides the marking preferably in a cutting machine in which raw glass panels are divided by at least scribing and breaking, on a glass roasting panel, during scribing or before or after scribing. In this case, a separate identification station of a cutting station of a cutting system for glass blank panels may expediently be connected upstream or downstream. For identification but preferably a marking device is used, which is integrated into the existing cutting station. The marking device itself is expediently installed movably on a bridge which can be moved over a support table and on the bridge.

in the Case of integration of the marking device in a cutting station is expediently the marking device on the cutting bridge and preferably on the cutting head and movably arranged with the cutting head. But it is an advantage Also, the marking device on a separate bridge the Cutting station or - if a stripping device for removing functional layers is provided along scribe lines - at the stripping to arrange.

Of Another is appropriate, the Labeling device exchangeable against the cutting tool or stripping tool.

To The invention is characterized by a marking program automatically controlled, by the marking device with a control device and processes a program, e.g. by one Ritzfeld starts, visits the identification point of a single disc to be broken and then do the tagging. Then the next scratch field will be approached and marked. This operation is repeated, until all for it provided Ritz fields the glass panel are marked.

The Cutting station of a cutting machine is i.d.R. via a control device controlled by a pattern program. The cutting tool drives controlled the pattern and produces the pattern corresponding Scribe lines, e.g. the rectangular scratched fields i.d.R. different size and different Alignments so that their identification location is not a regular pattern forms. Furthermore not every scratching area of a single pane to be produced must be marked become.

To an advantageous embodiment of the Invention is the cutting pattern program for the design of a Control program for the marking used so that the marking device is oriented to the pattern, in particular scribe lines as reference or orientation lines for positioning the marking be used. It may, for example, the label before or after done the scratches.

From particular advantage is that according to the invention, the position of the Marking and their distance dimensions from the edges of the individual panes no more, as before, from i.d.R. irregularly broken glass edges is determined, but very precisely set by exactly positioned Scratch lines or according to the program starting from imaginary scribe lines can be generated. About that In addition, it is advantageous that marker directions or character directions freely selected can be since it is easy, the mobility, in particular the rotation, to provide the marking device therefor.

Preferably a marking device is used, which is equipped with a laser beam the glass surface Pointwise changed in such a way that the lasered spot remains permanently visible. Conveniently, a laser marking device is used which makes it possible to to create a permanently visible point below the glass surface in the glass structure. It is advantageous if this marking device also in the field the glass surface can produce pointwise marks.

It is within the scope of the invention, other labeling devices such as inkjet, printing, Sandstrahleinrichtun gene or the like to use known devices according to the invention.

With The invention succeeds in the manual work, in particular the faulty Aligning a single pane of glass with respect to marking and writing direction for the Marking of individual discs off, the marking according to the program with the Machine control error-free and e.g. through the machine control Aligned to provide automatically aligned, the orientation the license plate and characters by appropriate program control of the marking tool. The labeling requires although a lower speed compared to scribing and / or However, it is much faster and more accurate as with the conventional ones Methods executable.

• – Reduzierung der Fehlerquote durch automatisches Aufbringen bereits im Zuschnitt,
• – definierte Kennzeichnungsposition (Abstand und Leserichtung) und
• – Vorgabe möglicher Produktionsablaufkriterien;
• – ggf. wird zusätzlich ein Barcode (Strichcode) und/oder Data-Matrix-Code (Punktcode) mit aufgebracht;
• – deutlich geringerer Zeitaufwand;
• – die Datenaufbereitung bzw. Datenvorgabe zur Kennzeichnungsaufbringung erfolgt durch die Arbeitsvorbereitung. Serien-Kennzeichnungen können gemäß Speicherabruf an der Maschinensteuerung abgerufen werden.

Particular advantages of the invention are accordingly:

• - Reduction of the error rate by automatic application already in the cut,
• - defined identification position (distance and reading direction) and
• - specification of possible production process criteria;
• - If necessary, in addition a barcode (barcode) and / or data matrix code (point code) is applied with;
• - significantly less time spent;
• - The data preparation or data input for labeling application takes place through the work preparation. Serial identifications can be retrieved according to the memory recall on the machine control.

The Invention is particularly useful for characterizing functional glass such as Safety glass, in particular laminated safety glass, toughened safety glass o. The like. Can be used. For example, the mark of a mandatory labeling according to certain suffices Certification Criteria; the tag contains e.g. Check numbers, manufacturer and / or Product specifications. About that In addition, the marking is in an embodiment of the invention for internal production schedule and / or machine allocation available.

at an embodiment is the marking device according to the invention as retrofit element educated. For example, the retrofit marking device allows a cutting device, in particular a cutting device known per se, with the marking device according to the invention retrofit.

The preferably used laser device has an optic for focusing the laser beam and expediently a beam deflection means, e.g. a mirror or a prism, on. The beam deflecting means is arranged, for example, movable, to deflect the laser beam within a solid angle movable. The laser device allows a particularly effective and / or accurate processing of the flat glass. The mark produced by the laser beam can be applied to the surface of the Flat glass and / or worked into the glass body of the flat glass become. The license plate can be letters, numbers and / or other Characters, such as a barcode (also called a barcode) and / or a Point code (also called data matrix code) and / or a logo.

Prefers This laser marking device is designed to be controllable. For example, power supply and / or optics and / or the Strahlablenkmittel o. The like. Functional elements of the laser device controllable, such that, for example, the intensity of the laser beam, the wavelength of the Laser beam or the polarization of the laser beam setting and / or controllably changeable are.

at an embodiment the invention is the cutting device for moving the raw glass sheet during the Cuts set up. In this embodiment, the zuzuschneidende Raw glass plate in the cutting system, for example, under the bridge before and back movable while the cutting device scratches and identifies the marking device.

at a further embodiment According to the invention, the step of trimming comprises a plurality of sub-steps on, while each of which a continuous cut is made, wherein two sub-steps separated from each other by an interruption are while where no cut is made, the step of marking essentially while the interruption between two steps of the trimming takes place. In this embodiment is the time required for cutting and marking very special low. The generation of the flag is thus for example at a time at which the cutting head in the corner of intersections such as cutting paths, in particular cutting lines, a System-related stop function - approach position Glass cut line intersection point - starts.

For example there is a first sub-step of trimming, a first Cut in a longitudinal direction and second part of the trimming step is make a second cut transverse to the longitudinal direction so that the cut edges in the end area of the first cut and start area form a corner of the second cut. The system is the cutting tool stopped after the first cut, lifted from the raw glass panel, to perform the aligned second cut, deposited on the glass sheet and approached. According to the invention during this System-related, anyway necessary interruption the indicator generates, so that an additional Time required for the marking is minimized.

Especially preferred is an embodiment of the method according to the invention, during that the interruption between two sub-steps of the trimming in an end area of during the first sub-step made cut and / or in one Initial range of during of the second sub-step to be cut becomes.

It is within the scope of the invention, with e.g. optical means the marking device by controlling optical sensors e.g. Detect scribe lines and a program calculates the identification location and the identifier appropriately controlled to set the license plate (s).

following Be exemplary embodiments of Invention with reference to the drawing explained. It demonstrate:

1 schematically a perspective plan view of a cutting table of a cutting system according to a first embodiment of the invention;

2 schematically a perspective plan view of a cutting table of a cutting system according to another embodiment of the invention;

3 schematically a perspective plan view of a cutting table of a cutting system according to a third embodiment of the invention;

4 schematically a perspective plan view of a cutting table of a cutting system according to a fourth embodiment of the invention.

The cutting station 1 a known per se and not further illustrated and described cutting device for splitting a glass panel 2 in single panes 3 by at least scribing and breaking usually has a cutting table 4 with integrated, known transportation (not illustrated sets) for the glass panel. Above the cutting table 1 is a laterally supporting cutting bridge 5 in double arrow direction 6 programmatically arranged movable. On or on or in the cutting bridge 5 is a tool slide 7 in double arrow direction 8th programmatically moveable mounted.

The tool carriage 7 carries a cutting tool carrier head 9 with a cutting tool (not shown) for generating scribe lines 11 on the glass raw board 2 ,

In that regard, the cutting station corresponds 1 the state of the art.

According to one embodiment of the invention is on the tool carriage 7 a marking device 10 expediently arranged on a separate tool head (not shown), the or together with the cutting tool head 9 moves programmatically.

With the cutting bridge 5 and the tool carriage 7 can the labeling device 10 program-controlled very precisely to one or via an identification point 12 on the glass raw board 2 driven and the marking be made.

It is within the scope of the invention for the marking device 10 not to provide a separate tool carrier, but the marking device 10 on the cutting tool carrier head 9 to arrange.

Conveniently, the marking device 10 perpendicular to the cutting table surface up and down, and preferably also rotatably mounted about an axis perpendicular to the cutting table surface axis of rotation.

2 shows a variant of an inventive device for marking glass sheets at predetermined locations, wherein compared to the device according to 1 the same device parts are marked with the same reference numerals.

Above the cutting table 1 is a second, also in double arrow direction 6 movable bridge 13 arranged a second, also in double-headed direction 8th movable tool slides 14 carries at which the marking device 10 outsourced.

In 3 a device according to the invention is shown, in which the second tool carriage 14 on, on or in the cutting bridge 5 in double arrow direction 8th is arranged movable, and the marking device 10 outsourced.

4 shows a variant of the device according to the invention, in which a separate identification station 16 in production direction 15 behind cutting station 1 is arranged. The identification station 16 has one, the cutting table 4 downstream labeling table 17 with known integrated transport (not shown) for storage and transport of the already scratched glass panel 2 on.

Above the marking table 17 is one in double arrow direction 6 movable, separate bridge 13 arranged, one in double-headed direction 8th movable tool slides 14 carries at which the marking device 10 outsourced.

The identification station 16 can the cutting station 1 in production direction 15 but also be upstream, with either the scratched Glasrohtafel 2 can be moved back or programmatically marked an unrooted Glasrohtafel before scribing. Likewise, with the device after 4 first in the labeling station 16 and then to score in the cutting station 1 be reduced.

It is within the scope of the invention, the cutting bridges 5 . 13 stationary and only the sledges 7 . 14 in double arrow direction 8th arranged to be movable, wherein in a conventional manner, the glass panel 2 in double arrow direction 6 on the tables 4 . 17 is moved and supported with known means of transport.

Claims (27)

A method of marking flat glass sheets at a predetermined location with at least one mark using a marking device, characterized in that the marking is carried out by machine on a glass roasting panel to be broken up by cracking and breaking, which is broken into flat glass sheets after being marked. Method according to claim 1, characterized in that that the glass panel is marked after scratching. Method according to claim 1 and / or 2, characterized that the glass panel is marked before scoring. Method according to one or more of claims 1 to 3, characterized in that the glass roasting panel during the Scratching is marked. Method according to one or more of claims 1 to 4, characterized in that the marking on a on a Auflagetisch resting Glasrohtafel done. Method according to claim 5, characterized in that that the marking is carried out with a marking device, the one with over the support table arranged bridge over a on, in or on the bridge movable carriage communicates. Method according to Claim 6, characterized that one on and over the support table movable bridge is used. Method according to claim 6 and / or 7, characterized in that the marking is carried out with a marking device which with one on, in or on the bridge movably arranged carriage is in communication. Method according to one or more of claims 5 to 8, characterized in that as a support table of the cutting table a cutting system is used, divided into the glass raw sheets become. Method according to claim 9, characterized in that that a marking device is used, which coincides with the cutting bridge especially about the cutting tool carriage of the cutting bridge or a separate carriage communicates. Method according to claim 10, characterized in that that a marking device is used, which with a Tool head of a cutting tool, which slides on the cutting tool is arranged, communicates. Method according to one or more of claims 1 to 11, characterized in that the marking device automatically programmatically to the identification location and at the marking location is moved to the design of the license plate. Method according to claim 12, characterized in that that a control program is used that with the scribe pattern program combined. Method according to claim 13, characterized in that that for driving the respective identification point an optical Sensor is used, which is based on scribe lines and readings recognized scribe lines to the control program for the marking provides. Method according to one or more of claims 1 to 14, characterized in that a laser marking device is used. Method according to claim 15, characterized in that in that a laser marking device operating under the glass raw slab surface is used and a flag is created in the glass structure below the surface becomes. Method according to one or more of claims 13 to 16, characterized in that during an interruption of Scratching steps during of the scribe is marked. Method according to claim 17, characterized in that that the marking takes place at a time when the cutting head in the corner of intersections a system-related stop function starts up. Device for marking flat glass panes at a predetermined location with at least one mark using a marking device, in particular for carrying out the method according to one or more of claims 1 to 18, characterized by a support table ( 4 ) for a flat glass raw board ( 2 ) above which an automatically operating, controlled identification device ( 10 ) is preferably arranged on a carriage connected to a bridge. Device according to claim 19, characterized in that it is part of at least one cutting station ( 1 ) for splitting a glass raw board ( 2 ) in single slices ( 3 ) by at least scribing and breaking. Apparatus according to claim 20, characterized in that the support table of the cutting table ( 4 ) of the cutting station ( 1 ), over which a laterally supporting cutting bridge ( 5 ) is arranged on, in or on the a tool carriage ( 7 ) is movably mounted. Apparatus according to claim 21, characterized in that the tool carriage ( 7 ) the marking device ( 10 ) wearing. Apparatus according to claim 22, characterized in that the marking device ( 10 ) on a cutting tool head ( 9 ) arranged with the tool carriage ( 7 ). Apparatus according to claim 20, characterized in that above the cutting table ( 4 ) a second, preferably movable bridge ( 13 ) is arranged on, in or on the a tool carriage ( 14 ) is seated on which a marking device ( 10 ) stores. Apparatus according to claim 21, 22 and 23, characterized in that a second tool carriage ( 14 ), on or in the cutting bridge ( 5 ) is arranged movable and a marking device ( 10 ) stores. Device according to claim 20, characterized in that a separate identification station ( 16 ) behind or in front of the cutting station ( 1 ) is arranged, which a the cutting table ( 4 ) subordinate or upstream identification table ( 17 ) over which a bridge ( 13 ), one on, in or on the bridge ( 13 ) movable tool carriage ( 14 ) wearing. Device according to one or more of claims 19 to 26, characterized in that the bridges ( 5 . 13 ) are arranged movable.