CH699748B1 - Method and apparatus for increasing the yield during the separation of flat glass plates of the glass ribbon. - Google Patents

Abstract

The invention relates to a process for separating glass plates from a continuously produced glass strip, in which, before the separation process, the glass strip is continuously examined for glass defects and other quality criteria such as glass thickness, optical quality, glass tensions, color, surface quality, the usable ranges for different final products are determined and from this a cutting pattern for a given glass route is determined in a cutting optimization device, wherein the glass plates of one or different raw formats are arranged in a band section in such a way that the glass properties present within the raw format are admissible for the final product made from the raw format and subsequently the band section is separated. In order to increase the yield significantly, it is provided that within a strip section the raw formats are arranged in front of and next to each other so that areas with impermissible glass properties are outside the end products or a predefined area of an end product and thus the area usable in a strip section is maximized. It also describes a corresponding device.

Description

The invention relates to a method for optimizing the yield in the separation of glass plates from a continuously produced glass ribbon, according to the preamble of the first claim. The invention also relates to a device for separating glass plates according to the preamble of patent claim 9.

Flat glass is a disc-shaped glass, which is used as window glass, but also as a precursor for mirror and automotive glass, screens u. a. Use finds. Today, most of the flat glass is produced in the float process. Float glass production is an endless continuous process in which the purified glass melt is continuously passed from one side to an elongated bath of liquid tin on which the glass floats and spreads evenly. At the other end of the bath, the glass is pulled out continuously, cooled and cut into slices. Standard dimensions for such plates in Europe are, for example, 600 × 321 cm with glass thicknesses of 0.4 mm to 24 mm. For this purpose, the glass ribbon in the float glass cutting zone is scored across every 600 cm and longitudinally scored with two longitudinal cutting tools at a distance of 321 cm. For shorter disks with full net bandwidth, e.g. 240 x 321 cm, the transverse ridges are made at the desired distance (e.g., 240 cm). For even smaller plate sizes, the glass ribbon in the float glass cutting zone can be scratched several times in the desired plate length in addition to the transverse direction in the longitudinal direction and broken later. Generally, the direction of movement of the glass ribbon is referred to as the Y direction and the transverse direction as the X direction, and the cuts running in these directions are referred to as Y cuts and X cuts, respectively. To break up, first the moving glass ribbon is broken into X-sections transversely to the running direction to obtain independent glass sections from the glass ribbon. These glass sections are singulated, ie accelerated and processed away from the running glass ribbon. Subsequently, the borders are separated on a special, adjustable in width transport section, so the left and right outer longitudinal scratches (Y-cuts) separated. Inner Y-sections are separated dynamically, at the moving glass band section, or statically, at the stationary glass section. Higher-order cuts, ie cuts between two Y-cuts parallel to the X-cuts running Z-cuts, can not be used today on the float tape.

Today, before the separation process, the glass ribbon is continuously examined for glass defects and other quality-related criteria such as glass thickness, optical quality, Glaseigenspannungen, color, surface texture to determine the faulty and to be utilized glass ribbon areas, so that the areas that either from the Error class and / or the number of errors are unacceptable, can be localized. The error information is taken into account in the determination of a pattern to the effect that as small as possible glass plates or Nutzglasplatten be placed in the error-prone, to be rejected area on a format optimization, the available glass ribbon area is fully exploited. Here, the pattern is designed so that the Nutzglasplatten are arranged in Traveren gapless side by side. Under traverses are understood perpendicular to the feed direction cut strips of glass ribbon with borders, from which one or more adjacent Nutzglasplatten be separated. The length of the traverses in the feed direction corresponds to the length of the useful plate. The traverses are in turn placed without gaps in the feed direction, unless interspersed areas are arranged between the traverses, which are so subject to errors that they must be sorted out as a whole, as so-called Fehlertravere. The defective utility plates are sorted out after the cutting process.

In order to allow a higher yield of Nutzglasplatten or to reduce the committee, a method is proposed in the published patent application DE 10 335 247, in which determined before the separation process faulty, to be rejected glass ribbon areas and in a cutting optimization device a pattern for a predetermined glass strip route are created, wherein the glass plates of a glass plate format arranged in each case a Travere next to each other and then the glass plates are separated according to the pattern. Within each traverse, the cut lines (Y-cuts) for the glass plates to be separated are placed so close to the defective glass ribbon regions to be discarded that the width of the glass ribbon region to be discarded or the glass ribbon regions to be discarded is minimized, taking into account the largest possible number of usable glass plates. This creates a cutting pattern that is adapted to the fault conditions within the respective Travere. In the determination of the pattern, different valences or, in addition, a downgrading of the value can be accommodated, whereby in a Travere glass plates of different valence are accommodated, or that even glass plates, which are arranged next to glass plates of low valence in a Travere, downgraded, if thereby a larger glass plate format can be achieved with a higher overall value.

Disadvantage of this method is that due to a faulty area between the glass plates to be discarded strip arises, which must have a minimum width to allow a clean separation of the strip, and a breakage or damage to the adjacent glass plate during the separation process to prevent.

Another disadvantage of the known methods is that the strip-shaped reject areas between traverses must have a minimum length as a result of the plant restrictions and thus the reject area is often greater than the effective defective area.

Additional rejects can arise because quality criteria must be applied to an entire rectangular glass plate, even if the final product uses only parts of the glass plate.

Committee may also arise when incurred due to longitudinally offset errors in traverenweise cutting products either one or more Fehlertraveren, and / or one or more strips with the entire product length must be sorted out.

The present invention has for its object to provide a method and apparatus for separating glass plates from a continuously produced glass ribbon available, which overcomes the disadvantages of known methods and devices to increase the yield of Nutzglasplatten.

This object is achieved by a method having the features of claim 1 and by a device having the features of claim 9.

With today's optimization method for creating a suitable pattern, the distances between the defects in the glass ribbon to the next cutting lines, as well as parallel lines of intersection must have a predetermined by the cutting and breaking devices minimum distance. Therefore, in order to increase the yield of the use glass plates and reduce the rejects, it is necessary to juxtapose the cutting lines of the use glass plates and the cut lines of the glass strip strips closer to the defects in the glass ribbon and parallel cutting line. To create an optimized pattern, the final product is considered, which can be, for example, the contour of a car window or any polygon. The final product is assigned to a raw format corresponding to a rectangular disk, which may now either be the final product itself, such as a windowpane, or includes the image of a final product (polygon). The method according to the invention now also takes into account in cutting optimization one or more subsequent glass strip sections which are defective and can not be realized for a cutting process with a cutting device for a continuously drawn glass strip, and sets the reject areas tightly around impermissible defects. The reject area is the faulty glass band area plus a predefined security margin to safely detect the error area. The raw formats or product contours are placed closer to the reject area. The method allows the length of a glass ribbon section to be separated to be equal to or longer than the length of a raw size or longer than the sum of a plurality of longitudinally spaced raw sizes. Further, the method may consider one within an end-product range in pattern optimization. This means that a defect may also lie within the raw format, if thereby the raw product arranged in the raw format lies outside of the scrap area, or that, depending on the quality requirements, certain defects are also accepted within the final product in predetermined ranges. As a result, glass plates can be reused with raw formats that would be rejects without regard to the location of the defects within the raw format or the product. In the further process, the determined optimized cutting patterns are forwarded on the one hand to the cutting devices for cutting and breaking the glass ribbon within the glass plate production process for performing the X and Y cuts and higher-order cuts, and stored on the other hand, to plates with complex patterns if required be able to cut offline later, without the already partially cut glass plates again checked for errors and new patterns must be created. The method further provides the possibility of marking the errors detected in the scanning or the coding of certain parts or glass plates in the glass band, whereby the plates for later post-processing, such as the further use of already calculated pattern can be characterized. The process of optimizing the pattern first provides for scanning the glass quality of the glass ribbon, i. determining, classifying and storing the errors and their position in the glass band. Subsequently, the possible positions of the raw formats, taking into account the end products and an optimal variable glass section length, are determined in iterative steps and an optimized pattern is created and stored within the glass section. In doing so, a given value of the raw formats and the products as well as the scanned errors are considered according to their classification. The lengths of the variable glass ribbon sections are calculated during the optimization and the optimization of the cutting patterns is completed before the separation of the glass ribbon strip from the glass ribbon.

The device for separating flat glass plates from the float glass belt provides additional cutting and breaking devices for higher-order cuts which allow higher-order inner cuts in the glass belt section during the raw-format production process. Furthermore, the device provides a marking device on the moving glass band, with which errors can be marked on the glass band or certain areas of the glass band can be encoded.

Further advantages of the invention follow from the dependent claims and from the following description in which the invention with reference to an embodiment shown in schematic drawings is explained in more detail.

[0014] In the drawings: <Tb> FIG. 1A and 1B show a schematic representation of a section of a glass band with defective glass band areas and a cutting pattern according to the prior art; <Tb> FIG. Fig. 1C is a schematic illustration of a section of a glass ribbon having defective glass ribbon regions and a prior art cutting pattern for products which utilize the entire usable width of the glass ribbon; <Tb> FIG. 2 is a schematic representation of a section of a glass band with defective glass band areas and a cutting pattern according to the method according to the invention with differently long glass band sections and raw formats with end products arranged therein; <Tb> FIG. 3 is a schematic representation of a detail of a glass band with defective glass band areas and a pattern according to the inventive method with additional Z and V sections; <Tb> FIG. 4a <sep> has the same pattern as in FIG. 3, but using variable Y-cuts and higher-order Z-cuts; <Tb> FIG. 4b <sep> is a schematic representation of a detail of a glass band with defective glass band areas and a cutting pattern according to the inventive method with additional Z, V and W sections; <Tb> FIG. 5 is a schematic representation of a section as in FIG. 1C, with a cutting pattern according to the method according to the invention with Z-sections; <Tb> FIG. Fig. 6 is a schematic representation of a section of a glass ribbon with defective glass ribbon areas as in Fig. 5, but with a cut pattern of raw half-width and additional Z-cuts being planned; <Tb> FIG. 7 is a schematic representation of a detail of a glass band with defective glass band areas and a cutting pattern according to the method according to the invention with scheduling additional Z sections and V sections and a marking for later further processing; <Tb> FIG. 8 is a schematic representation of the device for carrying out the method for separating flat glass plates from the float glass band; <Tb> FIG. Fig. 9 is a schematic illustration of the device with a simplified sub-line for Z-cuts across the entire net glass bandwidth.

In the figures, the same reference numerals have been used for the same elements, and first-time explanations apply to all figures, unless expressly stated otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1A to 1C show schematic views of sections of a glass band 1 with defective glass band areas and sectional patterns according to the prior art. In this case, in Fig. 1Aein Glasbandbereich with four traverses 2, and the glass plates 3, the errors 4 and the committee 5 is shown. The raw formats for the end products correspond to the size of the glass plates 3. The distances L1, L2 and L3 denote different traverse lengths. L4 is a reject belt, also referred to as an error traverse, whose length is determined by the minimum traverse length dependent on the machine. The white fields in the figure correspond to the usable glass plates 3, the hatched fields are scrap or defective glass plates 3. X and Y indicate the cutting directions for X-cuts or Y-cuts. The pattern corresponds seamlessly with one another traverses 2 whose length corresponds to the raw formats of the glass plates 3. From the outer edge of the glass band 8, the border 7 is separated in the further process, so that finally the glass band 1 with the net band 12 is available for further processing. After cutting and rupturing, the glass plates 3 marked with defects and hatched in the drawing are rejected as scrap.

Fig. 1B shows the same glass ribbon cutout as Fig. 1A, but with a cutting pattern optimized according to the prior art. The rejects can be reduced since the raw formats of the glass plates 3 within a traverse 2 are shifted transversely to the feed direction of the glass ribbon 1 and taking into account the minimum widths for cuts.

Fig. 1C shows a schematic representation of a section of a glass ribbon 1 with defective glass ribbon areas and a cutting pattern according to the prior art, whereby only products are cut, the raw formats have the length L5 and exploit the entire usable width of the glass ribbon 1. Here, the minimum error traversing length Lminein poses a double problem, since on the one hand the error trajectory Lmin is longer due to the system restrictions than necessary due to the actual errors, and on the other hand the space between the errors taking into account the minimum length of the error traverses is insufficient to place another product in between , As a result, another fault traitor LA2 has to be cut. In practice, the two consecutive error traverses are merged into a long error trajectory with the total length Lmin + LA2. In this case, the error traverses and thus the rejects are larger than the raw format of a glass plate 3.

FIG. 2 shows a detail of a glass band 1 with defective glass band areas as in FIGS. 1A, 1B and a pattern according to the method according to the invention. When planning the pattern, additional z-cuts (z) were allowed. Furthermore, the mold cuts for the end products to be carried out at a later date were taken into account. The glass band is divided into strips of glass strips 10, 11 of different lengths (L1, L2, L3). These lengths result from the raw formats (L1, L2) as well as from the intermediate format 11 with the length (L3), which is composed of a raw format plus a reduced (fictitious) committee strips in its length (L4). This reject strip is not separated in practice, only in the intermediate format 11, which is reused. The resulting after the X and Y sections glass plates 3 then have the raw format of Nutzglas or the intermediate format. The glass plate with the intermediate format 11 is fed to a further cut, a Z-cut (z). Thereafter, this glass plate 3 has the desired raw format. The optimized cutting pattern also takes into account the products arranged in the raw formats in addition to the subsequent, defective tape section (L4). Error 4 here means predefined irregularities, such as inclusions or areas with impermissible glass quality in the glass band, which must not be present in the end product or in predefined areas of the end product. If such an error 4 occurs in a raw format, then this leads to a scrap plate in the methods known today. In the first glass ribbon 10 (left) no errors 4 are included, all glass plates 3 can be used. In the second strip of glass strip 10 is in the top raw format an error 4, which is outside the product. This glass plate 3 is therefore usable and provides no rejects. In the bottom plate of this glass tape strip 10 due to the error position of the error 4 is considered another product with a smaller raw size. The raw format is after a Z-cut. In the third glass tape strip 11 errors were festgesellt in the optimization, which would lead to a reject strip whose width would be much larger than L4. The raw format in this glass ribbon strip was therefore increased by the length L4 to the intermediate format 11 with the length L3. In the top intermediate format is an error 4 outside the product 6 and an error 4 outside the raw format. The glass plate can be used after the Z-cut. In the middle and lower intermediate format, the errors are such that these plates are not usable and provide rejects.

Fig. 3 shows the same situation as shown in Fig. 2dargestellt. When creating the pattern however additional cuts of higher order were planned. The cutting pattern provides an additional raw format in the lower region of the right glass ribbon strip 11, which can be separated by a Z-cut and by two V-cuts. These cuts do not take place in the float glass cutting zone, but are carried out during the production process, on the stationary glass ribbon section. Subsequently, these raw formats are sent for further processing.

Fig. 4a shows the same pattern as shown in Fig. 3dargestellt, but this solution provides for the use of variable Y-sections and a Z-section before, which are then carried out during the production process, the stationary glass band section.

4b shows a schematic representation of a detail of a glass band with defective glass band areas as in FIG. 3, with a pattern according to the inventive method, in which additional to the Z-sections and V-sections in planning Sections are allowed.

In Fig. 5 is a situation as shown in Fig. 1C, where only products are cut, the raw formats have the length L5 and make use of the entire usable width of the glass ribbon 1. When planning the pattern, additional z-cuts are allowed. The defects 4 lie within the glass tape strips 10, 11. By scheduling the Z-cuts, narrow strips of glass ribbon with the lengths LA1, LA2 can be separated from the intermediate formats 10, 11. By applying the optimized pattern of the inventive method, the rejects reduced significantly compared to the application of the pattern of FIG. 1C.

Fig. 6 shows a further application of the method. In addition to the products whose raw formats as shown in Fig. 5, have the length L5 and exploit the entire usable width of the glass ribbon 1, raw formats with a certain length L6 and half net width should be cut out of the glass ribbon. In the pattern additional Z-cuts are planned. This results due to the error situation, a glass band section 11 with two superimposed, identical intermediate formats 11, which are divided with a Y-section and of which Z-cuts the desired raw formats with half net width and length L6, taking into account the location of the error 4 separable are. Thus, with the method, offset cutting of half net width formats is possible, and errors 4 can be considered such that the raw formats within the intermediate formats are adjacent to the errors. Due to the location of the longitudinally staggered flaws 4, traversing the blank formats would either result in one or more long error traverses, and one or more strips would have to be sorted out with the total product length.

Fig. 7 shows a solution for a cutting pattern with the situation as in Fig. 6 with planning of Z and V sections and with the additional consideration of the end products 6 within the raw formats. The belt section 10 is divided into six raw formats for the end product 6. The length L7 of the band portion 10 results from the juxtaposition of two raw formats of the end products 6. After the breaking of the X-cuts, the Z and V cuts can either be made during the ongoing production process on the stationary glass band section, or the glass band sections are stored and one later processed using the already established pattern. For further processing, the information on the usable or unusable raw formats are coded so that only errors 14 are marked in unusable raw formats, and the marking of errors 15 in raw formats but outside the end products 6 is suppressed.

8 is a schematic representation of an example embodiment of a device for increasing the yield in the separation of flat glass plates from the float glass ribbon 1 is shown. The apparatus has a transport system 40, which supplies the glass ribbon 1 and the glass ribbon sections 10, 11 to the cutting devices 61, 62, 66, 80 for separating and dividing the float glass into the raw formats. First of all, the glass ribbon 1 arrives in a main line 100 for quality detection 50, where the glass ribbon 1 is tested for defect 4 by means of a scanner 51. Further, a glass thickness measurement 52 and a voltage measurement 53 are performed. The determined measurement results of the quality detection 50 reach the cutting optimization device 90 continuously. Based on these measurement results, optimized cutting patterns are calculated taking into account the predetermined sizes, shapes and valences of the raw formats and end products. These patterns are stored on the one hand and on the other hand forwarded to the control 91 of the float glass cutting zone 60, to the marking unit 71 and to an additional cutting control 92 for performing higher-order cuts such as the Z, V and W cuts. In the cutting zone 60, the float glass ribbon 1 is scored transversely to the strip running direction in the transverse scratching bridges 62 and in the strip running direction in the longitudinal scratching bridges 61 in accordance with the calculated cut patterns. With the subsequently arranged marking unit 71 errors in the glass ribbon 1 can be marked or discs are coded. With the aid of these markings and codings, partially cut intermediate formats with the corresponding associated, already calculated and buffered cut patterns can be further processed at a later time and at a different location without the plates having to be rescanned and the cutting patterns recalculated. This also makes it possible to schedule and code smaller raw formats according to an optimized pattern in a larger intermediate format and to cut them out at a later time in the further processing of the raw formats according to the optimized pattern from the intermediate formats. This simplifies the transport of the glass plates, as the larger intermediate formats are easier to handle. The marking unit 71 is followed by the breaking 64 of the X-cuts. The glass ribbon sections 10 are separated from the float glass ribbon. This is followed by the rupture 65 of the outer Y-cuts, that is, the separation of the borders 7 from the glass ribbon section 10. The next section is a shear gate 72, in which the reject glass ribbon sections are sorted out. This is followed by a branch into a sideline 102. Plates which are not subjected to any further cutting or breaking up run on the main line 100 to the end of the float glass separating device. In the sideline 102, the inner Y-cuts are broken up into the desired raw formats or intermediate formats 11. The intermediate formats 11 are fed via the lateral line 102 to the cutting table 80, on which the higher-order cuts, namely Z-cuts, V-cuts and / or or W-cuts are scratched according to the optimized cutting pattern. The cutting table 80 is driven by the auxiliary cutting control 92, which receives the cutting patterns to be processed from the cutting optimization device 90. Subsequently, the plates reach the corresponding breaking stations for Z breaking 81 and the side line 102 to the end of the float glass separating device, or they are supplied via a branch line 101 to the V-break 82 and / or the W-break 83 as required by the pattern , The thus cut raw formats can be fed back to the main line 100 and finally reach the end of the float glass separating device. The device shown, for example, shows the additional cutting device 80 for realizing the cutting function for Z-cuts V-cuts and W-cuts. The necessary crushing operations are carried out individually, and can also be omitted depending on the production requirement.

Fig. 9 shows a schematic representation of an exemplary device with a simplified secondary line 101 for the realization of Z-cuts over the entire net glass bandwidth. With this device narrow glass band sections 10 can be separated. The additional secondary line 101 can also lie above or below the main line 100 instead of the illustrated lateral arrangement. Plates for Z-cuts are redirected to the sub-line 101 and fed to the additional cutting and breaking device 85 for the Z-cuts. Subsequently, the raw formats thus obtained are returned to the main line 100 and from there to the end of the float glass separating device.

With the inventive method narrow strips of glass tape can be separated from the glass ribbon without damaging the adjacent glass plate during the separation process, whereby the committee is considerably reduced. By incorporating the shape and quality criteria of the end products and at least one additional cut in the optimization of the patterns, glass plates that would otherwise be broke can continue to be used. Thus, the yield of commercial glass in the separation of flat glass plates can be increased significantly from a continuously drawn glass ribbon, which consequently also significantly increases the cost of a plant using the method.

Claims (12)

1. A method for separating glass plates from a continuously drawn glass strip (1), in which prior to the separation process, the glass ribbon is continuously examined for glass defects and quality criteria such as glass thickness, optical quality, glass tensions, color, surface finish, and therefrom in a cutting optimization device (90 ), a cut pattern for a glass ribbon section (10) is determined, wherein a final product (6) is assigned to a raw format of a predetermined valence and the raw formats are placed within a glass ribbon section (10) of the continuously drawn glass ribbon, and wherein first Y cuts are made longitudinally and moving direction of the continuous drawn glass ribbon (1) and X-cuts in the transverse direction to the longitudinal direction of the continuous drawn glass ribbon (1) are carried out to form two or more rectangular green sheets each for an end product (6), each rectangular blank sheet t extends over a portion of the width of the glass ribbon (1) characterized in that at least one additional section (Z, V, W) is taken into account for optimizing the pattern taking into account mold cuts of the finished products (6) within the two or more rectangular raw formats which, following the Y-cuts and the X-cuts, runs parallel to the transverse direction and / or parallel to the longitudinal direction of the glass ribbon (1) over the area of one of the two or more rectangular blank formats and by means of at least one additional cutting device (80, 85) becomes. 2. The method according to claim 1, characterized in that the at least one additional section (Z, V, W) by means of at least one additional cutting device (80, 85) on the stationary glass ribbon section (10) is executed. 3. The method according to claim 1, characterized in that for optimizing the cutting pattern, taking into account the glass section (10) or a plurality of subsequent glass band sections (10) which are error-prone and not feasible for a separation process with a cutting device for a continuously drawn glass ribbon, a length a glass ribbon section (10) is determined, wherein the length of the glass ribbon section (10) to be separated is equal to or longer than the length of a raw format or longer than the sum of a plurality of longitudinally juxtaposed raw formats (10). 4. The method of claim 1 or 2, characterized in that for optimizing the pattern predetermined values for quality criteria for one or more different zones in the glass ribbon section (10) are taken into account by predetermined values for quality criteria for the raw format or for lying in raw format of the cut of a final product (6) or for another area in the final product (6). 5. The method according to claim 1 or 2, characterized in that for optimizing the cutting pattern (10) taking into account one or more subsequent glass band sections (10) which are error-prone and not feasible for a separation process with a cutting device for a continuously drawn glass ribbon, a Length of a glass ribbon section (10) is determined, wherein the length of a glass ribbon section (10) to be separated is equal to or longer than the length of a raw format or longer than the sum of a plurality of longitudinally juxtaposed raw formats (10), and that further predetermined for optimizing the pattern Values for quality criteria for one or more different zones in a glass ribbon section (10) are taken into account by predefined values for quality criteria for the raw format or for the raw form cut of an end product (6) or for another final product (6) to be involved. 6. The method according to claim 5, characterized in that the areas for the different zones within the raw format are described by geometrically described curves or polygons. 7. The method according to any one of the preceding claims, characterized in that the band sections (10) are marked and stored temporarily and that the optimized cutting pattern for each band section (10) is stored and passed on to a separate processing process. 8. The method according to claim 7, characterized in that the marking of the glass strip sections (10) with a in the apparatus for separating flat glass plates from the glass ribbon (1) integrated error mark (71). Apparatus for separating glass plates according to the method of claim 1, comprising a transport system (40), a quality detector (50) with a scanner (51) for error detection, a glass thickness measurement (52) and a voltage measurement (53), a slice optimizer ( 90) for determining a cutting pattern based on the measurement results of the quality detection (50) and optimized taking into account predetermined sizes, shapes and valencies of the raw formats and end products, and a cutting control (91) for driving cutting devices (61, 62) for transversally to the strip running direction X. Cuts and for the running in the strip running direction Y-sections, characterized in that the device at least one additional cutting device (80, 85) with an associated with the cutting optimization (90) cutting control (92) for performing at least one additional section (Z , V, W) transverse to the direction of tape travel u nd / or parallel to the strip running direction and over a partial region of the width of the glass ribbon (1). 10. The device according to claim 9, characterized in that the device includes a marking unit (71) by means of which marking unit (71) with the quality detection (50) detected errors on the glass ribbon (1) markable and / or glass plates are coded. 11. The device according to claim 10, characterized in that the device at least one side line (102) or secondary line (101) with a cutting table (80) or an associated cutting device (85) for scoring cuts (Z, V, W) transversely to Tape running direction and / or parallel to the tape running direction and over a portion of the width of the glass ribbon (1) according to the optimized pattern has. 12. The device according to claim 11, characterized in that the additional cutting control (92) for performing cuts (Z, V, W) transversely to the strip running direction and / or parallel to the strip running direction and over a portion of the width of the glass ribbon (1) the optimized pattern is coupled to the cut optimization device (90).