Apparatus and method for longitudinal cutting of very thin glass

Abstract

The invention provides a method for producing a glass ribbon section, having at least the following steps: - transporting a glass ribbon in a plane E1 with a speed v1 under application of a tensile stress parallel to the side edges of the glass ribbon, wherein the speed v1 depends on a preset glass thickness (d1), and cooling the glass ribbon with a cooling rate which depends on the preset glass thickness (d1), - introducing score marks on the surface of the glass ribbon in at least one edge region by scribing the glass surface, wherein the scribing is performed at an angle a of the scribing tool relative to the transport direction of the glass ribbon, and deflecting the glass ribbon into a plane E2 to generate a bending stress, - separating the glass ribbon section in case of forming an edge by breaking the glass ribbon at the extension of the score marks transverse to the glass ribbon. The invention also relates to a device for producing a glass ribbon section.

Description

TECHNICAL FIELD

[0001] The present invention relates to the production of glass ribbon sections from thin or ultra-thin glass, i.e. glass having a thickness in the range of 15 to 150 μιη, wherein a target fracture line is introduced and subsequently a bending stress is applied to separate individual glass ribbon sections in the transverse direction of the glass ribbon. The invention further relates to a corresponding device for producing glass ribbon sections from ultra-thin glass. BACKGROUND

[0002] For cutting or separating glass, a method is generally used in which first a scribe is produced in the glass surface over the entire width of the glass as a target fracture site by means of a scribing tool, and then a bending stress is applied by bending the glass, which causes the glass to fracture so that an edge is formed along the scribe. However, especially in the case of thin glass, the fracture is difficult to control due to its speed and here an uncontrolled fracture can easily occur due to the energy introduced being greater than that required to form the fracture edge and can lead to peeling.

[0003] Furthermore, when separating glass ribbon sections or glass plates from a continuous glass ribbon, the glass ribbon is moved transversely to the scribing direction, so that the minimum glass plate length that can be achieved depends on the feed speed of the glass and the duration of the cutting process. Here, the duration of the cutting process is derived from the time for a round trip of the cutting shaft and the duration required for synchronizing the scribing tools. Thus, for each ribbon speed there is a minimum plate size that cannot be made any smaller.

[0004] For this, the drawing speed of the glass ribbon and also the feed speed increases with decreasing glass thickness. For thin glass, for this, depending on the respective glass thickness, feed speeds of 0.5 to 50 m / min are obtained, so that for example for glass having a thickness of 50 μιη the minimum cutting size is above 690 mm. For glass having a thickness of 30 μιη the minimum cutting size is already above 1000 mm. However, it is generally desirable for the maximum length of the glass plate to be 500 mm.

[0005] In addition to the above-mentioned higher minimum cutting size, a further problem that arises due to the high feed speed is that the cutting quality cannot be ensured when scribing over the entire glass width.

[0006] A cutting method for thin glass is therefore described in DE 10 2014 013 262 A1, in which the scoring is not carried out over the entire width of the glass ribbon, but only in the edge region. Furthermore, by using a rotating cutting line it is not necessary to carry out a synchronization, so that the duration of the cutting process can be shortened overall. After the scoring, the edges are formed by bending the glass and the respective glass segments are separated from the glass ribbon and fed to a collection container. A disadvantage in DE 10 2014 013 262 A1, however, is that the bending stresses cannot be set precisely. Furthermore, the device described in DE 10 2014 013 262 A1 cannot separate the glass ribbon segments. SUMMARY

[0007] It is therefore an object of the present application to provide a method for producing glass ribbon segments formed from ultra-thin glass, which does not have the above-mentioned disadvantages. In particular, glass ribbon segments in the form of glass discs with variable length and in high yield can also be produced by means of the production method according to the application. It is a further object of the present application to provide a device for producing glass ribbon segments formed from thin glass by a process-reliable machine component, in particular in high process yield.

[0008] This object has been achieved by the subject matter of the independent claims. Advantageous embodiments and refinements of the application are the subject matter of the dependent claims.

[0009] The present application provides a method for producing glass ribbon segments, which has at least the following steps a) to g):

[0010] a. hot forming a continuous glass ribbon formed from a glass melt, which has a pre-set glass thickness (d1 ) in the range from 15 μιη to 150 μιη and cools the glass ribbon at a cooling rate which depends on the pre-set glass thickness (d1 ),

[0011] b. transporting the glass ribbon at a speed v1 with application of a tensile stress parallel to the side edges of the glass ribbon,

[0012] c. deflecting the glass ribbon into a plane E1,

[0013] d. transporting the glass ribbon at a speed v1 in the plane E1,

[0014] e. introducing scores on the surface of the glass ribbon in the region of at least one edge region of the glass ribbon by scoring the glass surface, wherein the scoring is carried out by a scoring tool at an angle a to the transport direction of the glass ribbon,

[0015] f. guiding the glass ribbon into a plane E2 to generate a bending stress, wherein the glass ribbon is transported in the plane E2 with a speed v2, wherein the plane E1 and the plane E2 are arranged relative to each other such that the glass ribbon (4) is subjected to a bending stress when being transferred from the first transport unit to the second transport unit and the bending radius is set by the difference in position between the plane E1 and the plane E2 and / or the difference in speed v1 and v2, and

[0016] g. separating the glass ribbon sections in case of forming edges by the glass ribbon spontaneously forming cracks propagating at the elongation of the score transverse to the glass ribbon.

[0017] According to an embodiment, the speed v1 is set in accordance with the desired glass thickness d1.

[0018] Steps c) and d) can be directly subsequent to each other, but embodiments are also possible in which steps c) and d) are completed spatially and / or temporally separated from each other. Thus, for example, the glass ribbon (4) can be wound up after step c) and the thus generated roll is transported to steps d) to g) at a later point in time.

[0019] The plane E1 and the plane E2 are arranged relative to each other such that the glass ribbon (4) is subjected to a bending stress when being transferred from the first transport unit to the second transport unit. In particular, the two planes E1 and E2 have a different position. Preferably, the plane E1 and the plane E2 have an offset. Alternatively or additionally, the two planes E1 and E2 have an angular offset. In embodiments in which the two planes E1 and E2 have an offset between them, the two planes have a height difference Ah in the z-direction. In the present disclosure, the z-direction represents the vertical direction. Thus, different z-coordinates represent different heights. Preferably, here the plane E2 is arranged below the plane E1. In particular, the height difference Ah is configured in the form of a step. According to a preferred embodiment, the two planes E1 and E2 have a height difference Ah and are oriented parallel to each other, i.e. the two planes have no angular offset from each other.

[0020] According to an embodiment, after step g), in step h) the glass ribbon sections are separated from the glass ribbon by a transport with a speed v2, wherein for the speed preferably v2 > v1 applies. According to the difference in position of the two planes E1 and E2, for example when the two planes have a relatively large height difference Ah, it is also possible to separate the glass ribbon sections from the glass ribbon when the speed v2 is smaller than the speed v1.

[0021] Alternatively or additionally, in another embodiment of the present application the individual glass ribbon sections can be separated from each other by a transport with a speed v3, wherein for the speed v3 the following applies: v3 > v1.

[0022] The edge region of the glass ribbon can be configured as a rolled edge region. By rolled edge region is understood a bulge-like thickening at both edges in the longitudinal direction of the glass ribbon. The glass ribbon has a glass thickness in the rolled edge region which is greater than the thickness dl in the middle of the glass ribbon. In particular, the thickness d2 of the rolled edge region and the glass thickness dl of the glass ribbon satisfy: d2 > 4dl.

[0023] In one embodiment of the application, the glass ribbon has two rolled edge regions and the scoring in step e) is carried out in at least one of the rolled edge regions of the glass ribbon. Scoring in the rolled edge region is particularly advantageous because the glass ribbon has greater mechanical strength in this region due to the greater glass thickness than in the middle region of the glass.

[0024] The speed vl at which the glass ribbon is transported in step d) is set in accordance with the desired glass thickness and corresponds to the stretching speed of the shaping device. Here, the glass ribbon is stretched in the y direction in the plane El, wherein the tensile stress is applied parallel to the glass roll edge. Here, the tensile stress applied in the plane El does not correspond to the tensile force in the hot shaping process in step b), because in step d) only the force for the transport in the y direction, i.e. the horizontal transport, has to be applied.

[0025] According to one embodiment, the glass ribbon is stretched in a down-draw process in step a), preferably at a speed in the range from 1 m / min to 50 m / min. However, the method is not limited to the down-draw process. It is possible, for example, to carry out the stretching in an overflow fusion process or other suitable processes for producing thin glass ribbons.

[0026] According to one variant, the glass ribbon is actively cooled in step a), i.e. heat is output to the environment by convection or thermal radiation. Here, the cooling rate depends on the predetermined glass thickness.

[0027] An alternative embodiment is to actively cool the glass ribbon immediately after the shaping, wherein in particular a cooling rate of at least 10 K / s is used. However, the cooling rate can also be significantly greater. Thus, one embodiment of the application is that the cooling rate is at least 40 K / s. The cooling rate increases the smaller the predetermined thickness of the glass ribbon is. According to one refinement of the application, the cooling in step b) is carried out at a thickness-dependent cooling rate, wherein the cooling rate is in the range from (1 / d)*5 K / min*pm to (1 / d)*280 K / min*pm. According to one preferred embodiment, the cooling rate is in the range from 120 to 260 K / min*pm. Preferably, the cooling of the glass ribbon in this embodiment is carried out in particular with the aid of a thermal cooling element. To this end, the device can have a cooling furnace before the first transport device.

[0028] It is surprisingly found here that a rapid cooling is induced, preferably in the separation process. The rapid cooling here leads to the build-up of compressive stresses in the glass surface. The compressive stresses in the glass thus lead to the fact that the cracks produced when scribing in step e) do not continue autonomously in the x direction, but rather break at the crack when the bending stress is applied in step f) and thus can be better controlled. While the compressive stresses are disadvantageous in conventional cutting methods, the build-up of compressive stresses in the method according to the application thus leads to a better control of the separation process and thus also to an increase in process yield.

[0029] In a subsequent step c) the glass ribbon is turned. According to one embodiment, the glass ribbon is turned here such that it is no longer transported in the vertical, i.e. in the z direction, but rather in the y direction. The transport of the glass ribbon in step d) here takes place in one plane E1. The transport speed here corresponds to the drawing speed v1.

[0030] In steps e) to h) the glass ribbon section is separated with the formation of a glass ribbon edge by scribing the glass ribbon in at least one edge region and applying a bending stress. The glass section is thus caused to break autonomously from the glass ribbon by autonomous crack propagation, wherein the break or crack extends along the principal stress line. Thus, in step e) the glass ribbon is scribed in at least one edge region of the glass ribbon, preferably in at least one edge region of the glass ribbon. The edge region is understood here as the region near the edge of the glass ribbon. The scribe has an angle a to the transport direction or drawing direction of the glass ribbon. Thus, after the application of the bending stress, a break is made at an angle a to the main drawing direction. In order to obtain a right-angled or at least substantially right-angled glass ribbon section, the angle a is preferably in the range of 80 to 100°. The angle a is in particular 90°.

[0031] In the method according to the application it is not necessary to produce a transverse target break line extending over the entire width of the glass ribbon before the application of the bending stress. Rather, the scribing is made in one of the two edge regions of the glass ribbon having a small lateral extension, in order to obtain a break edge after the application of the bending stress, which has an angle a, preferably an angle a of 90°, to the main drawing direction or transport direction of the glass ribbon. Since the crack propagates along the bending edge and the bending edge has an angle of 90° to the transport direction, a right-angled or at least substantially right-angled glass ribbon section can also be obtained when the angle a is not 90°. According to one preferred embodiment, the length of the crack is in the range of 2 to 6 mm.

[0032] Due to the small lateral extension of the score, the time for the back-and-forth travel of the cutting shaft is significantly reduced. The duration of the simultaneous travel is also reduced in the case of the use of a simultaneous cutting tool. A method is provided by the significantly shortened process length of the scribing process, which enables short cutting dimensions even at high belt speeds. A glass disc with a glass thickness in the range from 15 μιη to 150 μιη and a cutting dimension of only 500 mm, even below 500 mm, can thus be produced by means of the method according to the application.

[0033] According to an improvement of the application, a scribing tool is used in step e), which is angled by β to the hem. Here, the angle β is set depending on the transport speed v1, such that the movement of the glass ribbon in the y direction is compensated by the transport speed v1 during the scribing process. The angle β is matched here in particular to the drawing speed or transport speed v1 of the glass ribbon and the cutting speed v2 of the scribing tool 刻划 such that the score has an angle a in the range from 80 to 100°. Here, for the angle β to be set: β = arccos(v1 / v2). Thus, in the improvement of the application the simultaneous travel of the scribing tool with the glass ribbon is dispensed with, whereby the process length in step e) can additionally be shortened. 刻划

[0034] Alternatively or additionally, a further improvement of the application is the use of an elastic tool holder. Due to the elasticity of the tool holder, the scribing tool is flexible, such that the scribing tool can match the differential speed of the glass surface transverse to the cutting direction, thus no synchronization is necessary. According to an advantageous embodiment, the angle β of the scribing tool to the hem is set here in the range from 40 to 70°. The large tolerance of the angle β to the angle a is achieved here due to the elasticity of the scribing device. Thus, preferably, according to this improvement also no synchronization of the scribing tool with the glass ribbon takes place.

[0035] ​The scored glass ribbon in step e) is subjected to a bending stress in a subsequent step f). Here, the bending stress is achieved by guiding the glass ribbon from a plane E1 into a plane E2 with a speed vi. Here, the planes E1 and E2 have different positions. Thus, the planes E1 and E2 have an offset, i.e. a height difference Ah. Preferably, in this embodiment, the plane E2 is located below the plane E1, thus the glass ribbon is guided downwards in the z-direction and is subjected to a bending due to the gravitational force. Another embodiment is that the planes E1 and E2 have an angle with respect to each other. Here, the additional offset can be in the form of a height difference. In addition, the speeds vi and v2 with which the glass ribbon is transported in the planes E1 and E2 can be different. Here, the bending radius can be influenced by choosing the speed v2 or the speed difference between the transport speeds vi and v2. It is especially suitable that: vi < v2. According to one preferred embodiment, it is here suitable that: vi < v2. Thereby, glass ribbon sections can also be separated from the glass ribbon and the individual glass sheets can be separated from each other. Alternatively, however, the speeds vi and v2 can be suitable: vi = v2.

[0036] According to one embodiment of the application, the transport device is configured as a belt, which is guided via pulleys. In this embodiment, the smallest bending radius is predefined by the radius D1 of the pulley of the first transport device. The bending radius and the applied bending stress can be fine-tuned by changing the offset of the planes E1 and E2, for example by changing the height difference Ah, and / or the difference of the speeds vi and v2.

[0037] According to one embodiment of the application, the height difference Ah of the two planes E1 and E2 is 75 to 225 mm, preferably 150 to 200 mm. The greater the chosen height difference Ah, the better the matching of the glass to the predefined bending radius D1 and the greater the time delay with respect to the previous glass ribbon section. The greater time delay with respect to the previous glass ribbon section and the spacing enable the second transport device to be operated at a smaller speed v2. This in turn leads to the glass ribbon better adhering to the pulley and thus enables the actual bending radius to approach the smallest bending radius D1.

[0038] It is especially suitable that the ratio of the two speeds vi / v2 is in the range of 0.95 to 1.05, preferably in the range of 0.9 to 1.1.

[0039] In a refinement of the application, in at least one of the two edging regions, a score is made from the inside of the edging tape in the direction of the side edge or side edge of the glass ribbon. Here, only one of the two edging regions of the glass ribbon can be scored or both edging regions of the glass ribbon can be scored. It is preferred that only one side is scored. The glass edging has a unique cross-sectional configuration, in which the glass thickness slowly rises from the inside to the outside in the direction of the edge of the glass ribbon. By scoring from the inside to the outside, the scoring tool follows this rise.

[0040] In very thin glass ribbons in particular, the self-weight of the glass ribbon is sufficient to achieve the bending of the glass ribbon upon the transition from the first plane E1 to the second plane E2 by gravity. The improvement according to the application is that the bending radius of the glass ribbon in step f) is also set by the contact of the glass ribbon with at least one guide wheel. The point of contact A between the glass ribbon and the guide wheel is here preferably in the plane E1. Here, one guide wheel or a plurality of guide wheels is preferably positioned in the region of the rolled edge of the glass ribbon. The guide wheel is driven with a circumferential speed v 轮 which is faster than the transport speed v1 of the first transport device, so that no stopping momentum occurs when the glass ribbon comes into contact with the guide wheel. 轮

[0041] With the above-mentioned improvement according to the application, it is advantageous in particular when relatively thick glass ribbons are split, the thickness of which is in the range from 80 to 150 μιη. In glass ribbons in the aforementioned thickness range, the stiffness of the glass leads to the fact that the bending does not occur or occurs too late during the bending process only by gravity, i.e. without further mechanical assistance. Thus, with the above-mentioned improvement, the bending radius and the bending stress can also be set precisely in thicker glasses, in particular in the range from 80 to 150 μιη.

[0042] A further embodiment is that the rolled edge region of the glass ribbon section is removed in step i) after step d). This can be carried out in particular by means of a laser cutting method. The respective glass ribbon section without rolled edge can be wound up, for example. Here, according to one embodiment, the rolled edge region is removed in the region of the plane E2, i.e. after the formation of the fracture edge transverse to the transport direction. This offers the advantage that scoring can be carried out in the rolled edge region. A further embodiment is that the rolled edge is removed before step e). In this embodiment, the scoring is carried out in the edge region of the glass ribbon without rolled edge.

[0043] The steps f) to h) of the production method are preferably repeated a plurality of times, so that a plurality of glass ribbon sections is produced accordingly. According to one improvement according to the application, the individual glass ribbon sections are packed manually in step j) after step h). Here, the glass ribbon sections are conveyed to the packing station by means of a third transport device with a transport speed v3.

[0044] According to one variant of the application, the individual glass ribbon sections are transported by means of a third transport device to the packing station, preferably onto a stacking platform of the packing station by means of a robot. Here, the glass ribbon sections and paper sections are alternately stacked on the stacking platform. Preferably, the paper sections in the form of a sheet of paper are placed by means of a further robot from a paper conveying device onto the glass ribbon sections on the upper part of the stacking platform. During the transfer of the glass ribbon sections and the paper sections, the stacking platform is moved downwards by the thickness of the glass ribbon sections or the thickness of the paper sections at each transfer.

[0045] ​According to an advantageous embodiment of the application, the glass band segment is transferred from the third transport device to the stacking platform via a perforated flat plate to which a vacuum is applied, in particular via a perforated flat plate made of plastic. Thus, it is ensured that the glass band segment is uniformly sucked up and that a high suction force or pulling force is not point-like induced on the glass band segment. Very thin glass segments can thus also be transferred from the third transport device to the stacking platform without the risk of breakage.

[0046] A further variant of the application is that the glass band segment obtained in step g) has a length in the range from 100 to 2000 m, preferably in the range from 100 to 1000 m and that the glass band segment is rolled up together with the paper band in step k) after step h). In particular, a variant is provided for the glass band segment, in which the hemmed region is removed in a preceding method step.

[0047] Furthermore, a device for producing a glass band segment of a predetermined thickness dl in the range from 15 μm to 150 μm is the subject of the application, in particular for the above-mentioned method according to the application. Here, the device comprises at least two, preferably three transport devices for transporting the glass band, wherein the transport devices have a width bl which is greater than the width b2 of the glass band, and at least one device for scoring the glass band in the region of the first transport device.

[0048] It has been found to be advantageous to use belts as transport devices. By making the width bl of the belt greater than the width b2 of the glass band, the belt provides a full-area support for the glass band. Here, each belt is driven independently of the other. This makes it possible for the speed of each glass band to be set independently of the other. The belts are guided by pulleys. Here, the diameter of the pulleys simultaneously defines the minimum possible bending radius. It has been found to be particularly advantageous to use pulleys with a diameter in the range from 40 to 150 mm.

[0049] In the device, the second transport device or the second belt is arranged behind the first transport device and, if necessary, in front of the third transport device. Here, the glass band is transported from the first transport device to the second transport device. Thus, the second transport device is arranged behind the first transport device in the stretching direction and the third transport device is arranged behind the second transport device in the stretching direction. Here, the first and second transport devices are arranged relative to one another such that a bending stress is built up in the glass band when it is transported from the first transport device to the second transport device.

[0050] The first transport device has a speed vl, wherein vl corresponds to the speed of the stretching machine, and the second transport device has a speed v2. According to one embodiment of the application, the speeds of the individual transport devices are set such that the speeds of the first and second transport devices differ from one another. Alternatively, it is also possible for the first and second transport devices to have the same speed.

[0051] In an embodiment with a third transport device, the third transport device has a speed v3. Preferably, the speed v3 of the third transport device is greater than the speed vi of the first transport device here. By this, it is ensured that the fracture edges of the individual glass ribbon segments do not collide with each other. Here, the third transport device is at least considerably faster than the first transport device, so that the individual glass ribbon segments are sufficiently separated. Here, the sufficient separation is important for the subsequent packaging process.

[0052] According to an advantageous embodiment, an inspection device is arranged in the area of the first transport device, by means of which an imperfection in the glass ribbon can be detected. If an imperfection is found in the glass ribbon, the corresponding area of the glass ribbon can be cut off by means of the above-described cutting process or the corresponding damaged glass sheet can be sorted out in a subsequent process step.

[0053] Alternatively or additionally, it is another embodiment that a device for measuring the thickness of the glass ribbon is arranged in the area of the first transport device. An improvement is that the glass ribbon is produced from the glass melt by means of a draw machine using a device for heat shaping the continuous glass ribbon and the device for measuring the thickness is connected to the device for heat shaping, so that the draw speed of the draw machine is adjusted depending on the measured glass thickness.

[0054] At least one device for scoring the glass ribbon is arranged in the area of the first transport device or the first belt, wherein the device for scoring is preferably arranged in the end region of the first transport device which is connected to the second transport device.

[0055] The scoring device is oriented so that the score is at an angle a in the range of 80 to 100°, preferably at an angle of 90°, relative to the transport direction of the glass ribbon. Due to the small length of the score, the time for the round trip is almost completely saved. The synchronization time is also shortened accordingly. Thus, even at high ribbon speeds, short glass ribbon segments or glass sheet blocks or glass sheets can be produced. Preferably, the scoring tool is positioned so that the glass ribbon is scored in the edge region of the glass ribbon or in the region of the rolled edge. According to an embodiment, the score has a lateral extension in the range of 2 to 6 mm. Thus, the score is 2 to 6 mm long.

[0056] In an embodiment, the first and the second transport device have a height difference Ah in the z-direction, i.e. perpendicular to the transport direction, wherein the second transport device is lower than the first transport device. According to an embodiment of the application, the height difference Ah is in a stepped configuration. Preferably, the height difference Ah is in the range of 75 to 225 mm. Preferably, there is no angular difference here between the planes Ei and E2.

[0057] The bending stress causes the formation of a fracture edge by spontaneous crack propagation along the main tensile stress starting from the score. Thus, by the angle a a right angle is formed in the case of the formation of an edge.

[0058] Here, the bending stress can be set by the respective height difference Ah between the first and second transport devices and by the difference of the speeds vi and v2 of the first and second transport devices. Here, the bending radius of the glass ribbon when being transferred from the first transport device to the second transport device is set via the speeds vi and v2 or via the speed difference. If the second transport device has a speed which is smaller than the speed of the first transport device, a relatively small bending radius is formed. Whereas, if the first transport device travels slower than the second transport device, a larger bending radius is formed.

[0059] Alternatively or additionally, the first and second transport devices can also have an angular offset.

[0060] According to an improvement, the device for scoring the glass ribbon is designed in such a way that the synchronous travel can be abandoned. By abandoning the synchronous travel, the duration of the cutting process can be reduced again. The abandonment of the synchronous travel can be realized in different ways. Thus, one embodiment is that the scoring device is placed at an angle β to the transport direction of the glass ribbon. Here, the angle β is set depending on the transport speed vi of the first transport device in such a way that the resulting score has an angle a in the range according to the invention to the transport direction of the glass ribbon.

[0061] Another scoring device without synchronous travel has a tool for scoring on an elastic tool holder. The elastic tool holder is arranged on a rotating disc. The tool holder is designed in particular as an elastic arm. The tool for scoring can use for example a diamond or diamond dust which is mounted on the tool holder. For the scoring of the roll edge the rotating disc is rotated by 360°, wherein the elastic arm with the diamond or diamond dust just touches the roll edge. The scoring tool can be moved with the glass ribbon by the elastic arm, so that an inclined axis is formed. Thus, the scoring tool has more degrees of freedom by the elastic arm than a stationary scoring tool. According to one embodiment, the elastic tool holder is at an angle β in the range of 40 to 70° to the stretching direction of the glass ribbon or to the roll edge of the glass ribbon.

[0062] A variant of the device is that the device has a device for mechanically diverting the glass ribbon at the end of the first transport device. The diverting device comprises preferably at least two guide wheels. The guide wheels or guide rollers are supported on a common shaft, which has its own drive. Here, according to one embodiment the shaft can be set in height and with its spacing to the respective step between the first and second transport devices. Here, the diverting device is set with a rotational movement and a circumferential speed v 轮A 360° rotational movement is carried out. Here the circumferential speed v 轮 is preferably set to be greater than the transport speed v1 of the first transport device, so that a stopping momentum when touching the glass ribbon is avoided. Thus, by additionally mechanically reversing the glass ribbon, it is also possible for a glass ribbon having a thickness in the range from 80 to 150 μιη to be bent with a preset bending radius, wherein the bending does not occur or occurs too late due to the stiffness of the glass ribbon only by gravity.

[0063] According to an embodiment of the application, the device has a device for separating the glass selvedge in the region of the first or second transport device. Preferably, the device for separating the selvedge is formed by means of a laser cutting device.

[0064] An embodiment of the device comprises a third transport device and at least two packaging stations in the region of the third transport device. Here, due to the relatively high process speed and in particular the speed v3 of the third transport device, at least two packaging stations are required, which alternately unload individual glass segments or individual glass sheets from the third transport device. Each packaging station comprises preferably at least two robots, a stacking platform and a paper conveying device. Here, a first robot stacks the glass ribbon segments from the third transport device onto the stacking platform. A second robot places a page of paper, which has previously been provided by means of the paper conveying device, onto the uppermost glass ribbon segment or onto the uppermost glass sheet block of the stacking platform. Here, the stacking platform is moved in the z direction and after each stacking process is moved downwards by the thickness value of the glass sheet block or the paper thickness. In this way it is possible to produce 100 to 500 glass sheet paper stacks and subsequently to transport them to the final packaging.

[0065] Preferably, the first robot of the packaging station comprises a perforated flat plate, preferably a perforated plastic plate, to which a low pressure is applied for unloading the glass sheets.

[0066] According to an embodiment of the device, the device has a scrap funnel at the end of the third transport device, into which glass sheet blocks having glass defects are introduced. The glass sheet blocks having glass defects are brought by means of the scrap funnel into a collection container below the manufacturing plane. Here, there is a higher air pressure in the manufacturing plane, so that no glass dust enters from the collection container into the manufacturing plane.

[0067] In a further embodiment of the device, the device has a packaging station in the region of the third transport device, in which the glass ribbon segments are rolled up together with a paper roll. Preferably, the device also has a device for removing the selvedge region in the region of the first or second transport device. In the embodiment of the device, glass ribbon segments without selvedge, in particular having a length in the range from 100 to 2000 m, preferably in the range from 100 to 1000 m, are thus preferably rolled up in the packaging or rolling station. BRIEF DESCRIPTION OF DRAWINGS

[0068] The following is based on Figures 1 to 13 The present invention is described in detail. It is shown that:

[0069] Figure 1 shows a schematic top view of an embodiment of the device according to the present invention;

[0070] Figure 2 Shown Figure 1 A schematic side view of the embodiment shown in ;

[0071] Figure 3 A schematic diagram showing a cross-sectional configuration of a glass ribbon;

[0072] Figure 4 A schematic diagram showing the position of the scoring tool and the scoring motion;

[0073] Figure 5 shows a schematic diagram of a scoring tool having a resilient arm;

[0074] Figure 6 A schematic diagram of an improved solution of the present invention provided with an additional guide device is shown in a top view;

[0075] Figure 7 Shown in side view Figure 6 Schematic diagram of the improved scheme shown in;

[0076] Figure 8 A schematic diagram of a packaging station is shown in top view;

[0077] Figure 9 A schematic diagram of an improved embodiment of the invention with a rolled edge separation unit and a packaging station for rolling up the strip sections is shown in a side view;

[0078] Figure 10 shows the relationship between glass thickness and stretching speed;

[0079] Figure 11 shows the relationship between cooling rate and glass thickness;

[0080] Figures 12(a) to 12(c) A schematic diagram showing various embodiments in which the arrangements of the positions E1 and E2 are different from each other is shown in side view; and

[0081] Figure 13 A schematic diagram shows a modified solution of the present invention with a thermoforming station. DETAILED DESCRIPTION

[0082] Figure 1 and Figure 2 A schematic diagram of an embodiment of the device according to the present invention is shown in a top view ( Figure 1) or a side view Figure 2 The device of this embodiment comprises three transport devices 1, 2 and 3, which are configured as belts and are guided via pulleys. Preferably, the pulleys have a diameter D1 in the range of 40 to 150 mm. The belts 1, 2 and 3 have a width b2, which is greater than the width b1 of the glass ribbon 4, so that the glass ribbon 4 lies completely on the belts. The glass ribbon 4 has a thickness in the range of 15 to 150 μιη, wherein the glass thickness in the beaded area can be greater than at the middle of the glass and thus also above 150 μιη.

[0083] The belts 1, 2 and 3 are driven independently of one another at transport speeds v1, v2 and v3. Here, the first belt 1 and the second belt 2 have speeds v1 and v2. The speed v1 of the first belt 1 corresponds to the stretching speed with which the stretching machine (not shown) stretches the glass ribbon from the forming machine and is thus essentially determined by the desired glass thickness d1 of the glass ribbon 4. Here, the stretching speed and the speed v1 of the first belt or the first transport device increases with increasing glass thickness d1 of the glass ribbon 4. The speed v3 of the third glass ribbon is set such that the glass ribbon sections 60, 61, 62 are divided and the broken edges of the individual glass ribbon sections 60, 61, 62 are avoided. Thus, the speed v3 is preferably greater than the speed v1 of the first belt 1. The length L3 of the third belt 3 is chosen such that there is sufficient space here for the packaging station (not shown).

[0084] The scoring device 5 is positioned on the end of the first transport device or the first belt 1, so that the continuous glass ribbon 4 is scored in the area of the beading. Here, the score extends at right angles or at least approximately at right angles to the transport direction, which is also the main stretching direction, and the score has a length in particular in the range of 2 to 6 mm.

[0085] The first belt 1 and the second belt 2 are arranged offset in height, i.e. in the z-direction, such that in the region 5, i.e. between the first belt 1 and the second belt 2, a step with a height difference hi is formed. Due to the height difference Ah between the first belt 1 and the second belt 2 in the region 7, the glass ribbon 4 is subjected to a bending stress which leads to the glass ribbon 4 being broken along the score to form a glass edge, such that the continuous glass ribbon 4 is divided into glass ribbon sections 60, 61, 62. The length of the glass ribbon sections 60, 61, 62 is determined by the time interval between two scoring processes. Here, the minimum length of the glass ribbon sections 60, 61, 62 is defined by the shortest time interval between two scoring processes which is to be achieved by means of the apparatus. In this time interval, time is available, for example, for the scoring tool to travel back and forth, for the duration of the cutting process and, if necessary, for the duration of the synchronised travel. Since the score in the method according to the application has a length of only 2 to 6 mm, the time interval between two scoring processes can be kept very short here, whereby it is also possible to divide very thin glass ribbons 4 into relatively short glass ribbon sections 60, 61, 62. The minimum plate length is therefore no longer dependent on the minimum spacing between two scores, but rather on the length of the glass ribbon which spontaneously leads to a break in the radius when being transferred onto the plane E2, in particular in embodiments in which the synchronisation of the tools can be dispensed with. The respective glass ribbon length is associated with the relative position of the planes E1 and E2, and thus in the embodiment shown with the height difference of the planes E1 and E2. In connection therewith, the lower limit of the length of the glass ribbon sections or glass plates is in the range from 150 to 250 mm.

[0086] The bending of the glass ribbon 4 is achieved by its own weight. In this embodiment, the bending radius and the bending stress are set by the height difference Ah between the first belt 1 and the second belt 2. Furthermore, the bending radius and the bending stress can be fine-tuned by the ratio of the speeds vi and v2 of the first belt 1 and the second belt 2. If the first belt 1 travels at a higher speed than the second belt 2, a relatively small bending radius is produced, and vice versa.

[0087] Figure 3 A schematic cross-section of the continuous glass ribbon 4 is shown. Here, the glass ribbon 4 has rolled edge regions 41 with an increased glass thickness d2 at both ends, while the glass thickness di in the middle region 40 of the glass ribbon is significantly smaller. Preferably, the glass is an aluminosilicate glass.

[0088] Here, the maximum glass thickness in the beveling region can be up to 5 times thicker than the glass thickness dl of the middle region of the glass ribbon. The beveling region 41 has an asymmetric cross-sectional configuration in which the glass thickness rises gently from the glass middle 40 towards the edge. Thus, according to an advantageous design variant of the method, the scribing tool 5 for producing the score 8 is guided in the beveling region 41 from the inside out, i.e. towards the edge of the glass ribbon. This is shown in Figure 4 Here, the arrow 9 symbolically shows the direction of movement of the scribing tool 5 during the scribing process.

[0089] Figure 5 An improved version of the scribing device 50 is shown schematically in a side view. The scribing device 50 comprises a rotating disc 11 on which a resilient tool holder 12 is arranged. On the other end of the tool holder 12, which is configured as a resilient arm, a cutting or scribing tool 13 in the form of one or more elements of hard material, for example diamond or diamond powder or diamond particles, is arranged. By rotation of the disc 11, indicated by the arrow 90, the cutting tool 13 produces the score 8. Here, the cutting movement is identified by the arrow 91. By means of the resilient tool arm of the tool holder 12, the tool holder can simultaneously perform a transport movement of the glass ribbon 4, so that the score 8 has an angle of 90° with respect to the transport direction of the glass ribbon 4 over its entire length. Thus, the necessity of a synchronous run is omitted in the case of use of the scribing device 50. Here, an additional matching angular adjustment of the speed of the scribing tool can also be made here. By cancelling the synchronous run, the minimum duration between two scribing processes is further shortened, so that even in very thin glass glass platelets with a small minimum length are obtainable.

[0090] An improved version of the device according to the application is shown schematically in a top view and a side view in Figure 6 which, in addition to the setting of the bending radius, the device has guide wheels in the region of the glass beveling. The guide wheels 14 are arranged behind the step 7 in the x direction and are supported on a common shaft 15. The shaft 15 is driven via its own drive. Here, the guide wheels 14 have a higher circumferential speed than the belt 1, so that no stopping momentum is produced on contact with the glass ribbon 4. Figure 7 A side view of the device is shown. The shaft 15 of the guide wheels can be adjusted in its height and its spacing relative to the step, i.e. in the x and z directions. Thus, the spacings xl and x2 and the height h2 are set by the position of the guide wheels 14 or the shaft 15. Here, the point A represents the point of contact of the glass edge with the guide wheels 14. The glass ribbon 4 is forced to bend by the guide wheels 14 in a mechanical manner. Thus, in Figure 6 and Figure 7The device shown in Fig. 1 is particularly suitable for relatively thick glass strips having a thickness in the range of 80 to 150 μιη, wherein due to the high stiffness of the glass, no or at least no immediate bending of the glass occurs without additional mechanical action.

[0091] Furthermore, in the device shown in Figure 6 and Figure 7 the bending radius and the bending stress can be set by different parameters. Thus, the bending stress is influenced, on the one hand, by the diameter D1 of the pulley of the first belt 1. The smaller the diameter D1, the greater the bending stress. Preferably, the diameter D1 is in the range of 25 to 150 mm.

[0092] Furthermore, the bending stress can also be controlled by the speed v2 of the second belt 2. The slower the transport speed v2, the better the glass can be pressed against the diameter D1 of the pulley and thus the bending radius can be set more precisely via the diameter D1 of the pulley. However, here v2 must be large enough so that the individual glass strip sections can be separated.

[0093] Furthermore, the above-mentioned minimum speed of the second belt 2 and indirectly the bending stress can also be set by the height hi of the step, i.e. the spacing of the two belts 1 and 2 in the z direction. The greater the height hi, the better the glass is pressed against the pulley having the diameter D1 and the greater the time delay and the greater the spacing from the preceding plate. This in turn enables a reduction of the speed v2, whereby the glass can also be pressed better against the diameter D1 of the pulley.

[0094] Here, the spacing and the height of the shaft 15 must be in a certain proportion to the edges of the glass strip. The height h2 represents the spacing of the two shafts of the belt 1 and the guide pulley. If this height h2 corresponds to half the sum of the two diameters D1 and D2, i.e. corresponds to h2 = 0.5*(D1 + D2), then the tangent at the lowest point of the guide pulley is as high as the glass strip 4 on the belt 1, i.e. as high as the belt surface of the first glass strip 1. Then the most probable point of contact A of the guide pulley 14 is obtained here. If additionally 0.5*(D1 + D2) + xi is met at the position of the point of contact A, the best most probable point of contact is achieved. Here, the displacement xi in the horizontal direction depends on the glass thickness di of the glass strip 4, since thin glass will contact earlier than thick glass and the glass thickness is squared in the bending stress. Thus, for example, for xi is met:

[0095] glass thickness d1 [pm] [mm] x2 150 245 100 75 75 75 50 45 30 30 20 25

[0096] Table 1: Dependence of the spacing xi on the glass thickness

[0097] If the guide wheel 14 or the shaft 15 is lowered further, the distance between the center point of the pulley and the shaft 15 must be increased at the same time, i.e. in horizontal direction x2, whereby x1 remains unchanged. Here, the distances x1 and h2 follow the equation:

[0098]

[0099] Figure 8 A partial view of one embodiment of the apparatus is shown, in which two packing stations 160, 161 are arranged in the area of the third transport device 3. Here, each packing station 160, 161 comprises a first robot 17 and a second robot 20, a stacking platform 18 and a paper transport device 20. The first robot 17 stacks a glass sheet or a glass ribbon segment 60 from the third transport device 3 onto the stacking platform 18. The second robot 20 then places a sheet of paper, which it has taken from the paper transport device 19, onto the glass sheet 60 on the stacking platform 18. Here, after each stacking process the stacking platform is moved down by the amount of the glass sheet thickness and the paper thickness. A 100 to 500 sheet glass paper stack is thus created and can be transported to the final packing subsequently. Due to the high transport speed v3 of the third transport device, the glass ribbon segments 60 can be stacked in the packing stations 160, 161 at a speed of 1000 to 5000 sheets per minute. Figure 8 In the embodiment shown, two packing stations are arranged in the area of the third transport device 3. At the end of the third transport device 3 there is a scrap funnel 21 through which the defective sheets are transported to a collection container. Here, the collection container is in the building plane below the manufacturing plane. Since there is a higher air pressure in the manufacturing plane than in the plane of the collection container, it is ensured that no glass dust enters from the collection container into the manufacturing plane.

[0100] In Figure 9 A partial view of another variant of the apparatus is shown schematically in a side view. Here, the apparatus forms in the area of the second transport device 2 an apparatus for continuous separation of the hem at two hem regions of the glass ribbon segment 60. The apparatus 22 is here preferably configured as a laser separation apparatus. The separated hem 41 is deflected downward by a transport device 25, while the glass ribbon segment 40 without the hem continues to be transported by the second transport device 2 toward the third transport device 3. In the area of the third transport device 3 a rolling apparatus 24 is arranged for rolling up the glass ribbon segment 40. Here, the glass ribbon segment 40 is rolled up together with spacer paper 26 provided by a paper transport device 23. In Figure 9 The variant shown in is particularly suitable for rolling up glass ribbon segments of a length in the range of 100 to 1000 m.

[0101] Figure 10 The relationship between the desired glass thickness d1 and the required stretching speed v z is shown. Here, the stretching speed v zcorresponds to the transport speed v1 of the first transport device. Obviously, with decreasing glass thickness, the stretching speed v z is increased significantly. This makes it necessary to stretch the glass at very high stretching speeds v z to stretch very thin glass. Thus, due to the high stretching speed v z and v1, the short process time during the cutting is decisive for the production of short glass platelets.

[0102] According to a variant of the method according to the application, immediately after the forming process, the glass ribbon is passed through a cooling furnace before it is transported on the first transport device and scored. Since in the cooling furnace also the stretching speed v z is to be maintained, a smaller cooling time is produced for thinner glass than for thicker glass. Thus, an embodiment of the application is that the cooling rate increases with decreasing thickness d1 of the glass ribbon. The relationship between the glass thickness d1 and the cooling rate is shown in Figure 11 .

[0103] In Figures 12(a) to 12(c) different embodiments of the device are shown schematically in a side view, which differ in the arrangement of the planes E1 and E2. In Fig. 12(a) a device is shown, in which the two planes E1 and E2 have a height difference, here without an angular difference from one another. In the embodiment shown in Fig. 12(b), the planes E1 and E2 have an angular offset. In the embodiment shown in Fig. 12(c), the height difference and the angular offset of the layers E1 and E2 are combined with one another.

[0104] Figure 13 An embodiment of the device is shown schematically with a device 6 for hot forming. Here, the glass ribbon 4 is first stretched in the vertical direction with the hot forming device 6. The transport takes place in the vertical direction here by means of the stretching device 9. After the glass ribbon 4 is turned into a horizontal plane, the glass ribbon is transported by means of the first transport device 1. In the area of the first transport device 1 there is a scoring device 5 for introducing a score into at least one side edge region of the glass ribbon. Subsequently, the glass ribbon 4 is guided onto the second transport device 2, similar to the embodiment described in Figure 2 .

[0105] List of reference signs

[0106] 1、2、3 Transport device 4 Glass ribbon 5 Scribing device 6 Thermoforming device 7 Area between 1 and 2 8 Score 9 Stretching device 10 Device for manufacturing glass ribbon sections 11 Disc 12 Tool holder 13 Scribing tool 14 Guide wheel 15 Shaft 17、20 Robot 18 Stacking platform 21 Fragment funnel 22 Device for separating the rabbet 23 Paper transport device 24 Winding device 25 Transport device 26 Spacing paper 40 Intermediate area 41 Rabbet area 50 Scribing device 60、61、62 Glass ribbon section 160、161 Packaging station

Claims

1. A method for producing a glass ribbon segment (60, 61, 62), the method comprising at least the following steps: a. hot forming a continuous glass ribbon (4) formed from a glass melt, the glass ribbon having a predetermined glass thickness in the range of 15 μm to 150 μm and cooling the glass ribbon (4) at a cooling rate depending on the predetermined glass thickness, b. transporting the glass ribbon (4) at a speed v1 while applying a tensile stress parallel to the side edges of the glass ribbon (4), c. deflecting the glass ribbon into plane E1, d. transporting the glass ribbon (4) in the plane E1, e. Introducing a score on the surface of the glass ribbon (4) in the region of at least one edge region of the glass ribbon by scoring the glass surface, wherein the scoring is performed by a scoring tool at an angle α relative to the transport direction of the glass ribbon (4) at a scoring speed v 刻划 conduct, f. deflecting the glass ribbon (4) into plane E2 to generate bending stress having a principal stress line, and g. separating the glass ribbon segments (60, 61, 62) by spontaneously crack-propagating the glass ribbon (4) from the score along the principal stress line in the extension of the score transverse to the glass ribbon (4), causing the glass ribbon (4) to fracture to form an edge, The glass ribbon (4) is stretched so that it has two rolled edge areas, the thickness (d2) of the rolled edge areas is greater than the thickness in the middle area of ​​the glass ribbon, and the score is added to the surface of the glass ribbon (4) in at least one rolled edge area of ​​the glass ribbon.

2. The method according to claim 1, wherein the glass ribbon (4) is transported in a plane E2 at a speed v2. The method according to claim 2 , wherein the speeds v1 and v2 are different. The method according to claim 3 , wherein the speeds v1 and v2 satisfy v1<v2.

5. The method according to any one of claims 1 to 4, wherein in step h) after step g), glass ribbon segments (60, 61, 62) are separated from the glass ribbon (4) transported at a speed v3. The method according to claim 5 , wherein the speeds v1 and v3 satisfy v3>v1.

7. The method according to any one of claims 1 to 4, wherein the angle α is in the range of 80° to 100°.

8. The method according to any one of claims 1 to 4, wherein the angle α is 90°.

9. The method according to any one of claims 1 to 4, wherein scoring is performed from an inner side edge of the rolled edge region toward a side edge of the glass ribbon (4).

10. The method according to any one of claims 1 to 4, wherein the scoring tool makes an angle β with the edge of the glass ribbon (4), wherein the angle β is proportional to the transport speed v1 and the scoring speed v 刻划 Matched to meet β=arccos(v1 / v 刻划 ).

11. The method according to any one of claims 1 to 4, wherein the scoring tool is arranged on a resilient tool holder (12) and runs together with the glass ribbon (4) in the y-direction.

12. The method according to claim 11, wherein synchronization of the scoring tool with the glass ribbon (4) is not performed. 13 . The method according to claim 1 , wherein the two planes E1 and E2 have an angular difference and / or a height difference Δh. 14 . The method according to claim 1 , wherein a height difference Δh between the two planes E1 and E2 is in the range of 75 to 225 mm and there is no angular difference. The method according to claim 14 , wherein the plane E2 is located below the plane E1 .

16. The method according to any one of claims 1 to 4, wherein in step f) the bending radius of the glass ribbon is also set by the contact of the glass ribbon with a guide wheel, wherein a contact point A between the glass ribbon (4) and the guide wheel is located in a plane E1.

17. The method according to claim 16, wherein the guide wheel is driven and has a peripheral speed v 轮 >v1.

18. The method according to any one of claims 1 to 4, wherein in step f) the glass ribbon (4) is bent by its own weight.

19. The method according to any one of claims 1 to 4, wherein in step a), the glass ribbon (4) is cooled at a cooling rate equal to or greater than 10 K / s and / or at a cooling rate in the range of (1 / d)*5 K / (min*μm) to (1 / d)*280 K / (min*μm), wherein d represents the thickness of the glass ribbon (4), and / or in step a), cooling is performed in a cooling furnace by means of a thermal element.

20. The method according to any one of claims 1 to 4, wherein in step a), the glass ribbon (4) is cooled at a cooling rate equal to or greater than 25 K / s and / or at a cooling rate in the range of (1 / d)*5 K / (min*μm) to (1 / d)*280 K / (min*μm), wherein d represents the thickness of the glass ribbon (4), and / or in step a), cooling is performed in a cooling furnace by means of a thermal element.

21. The method of any one of claims 1 to 4, wherein a rolled edge region of the glass ribbon segment (60, 61, 62) is removed in step i) after step f).

22. The method according to any one of claims 1 to 4, wherein in step i) after step f), the rolled edge region of the glass ribbon segment (60, 61, 62) is removed by laser cutting.

23. The method of claim 5, wherein the glass ribbon segment (60, 61, 62) obtained in step g) has a length in the range of 100 to 2000 m and the glass ribbon segment (60, 61, 62) is rolled up together with the paper in step k) after step h).

24. The method of claim 5, wherein the glass ribbon segment (60, 61, 62) obtained in step g) has a length in the range of 100 to 1000 m and the glass ribbon segment (60, 61, 62) is rolled up together with the paper in step k) after step h).

25. The method according to claim 5, wherein steps e) to h) are repeated multiple times and, after step h), in step j), the individual glass ribbon segments (60, 61, 62) are machine-packaged, wherein the glass ribbon segments (60, 61, 62) are stacked and separated from each other by paper (26).

26. An apparatus (10) for producing a glass ribbon segment (60, 61, 62) and for performing the method according to any one of claims 1 to 25, comprising at least two transport devices (1, 2) for a glass ribbon (4), wherein the transport devices (1, 2) have a width b1 that is greater than a width b2 of the glass ribbon (4), - the second transport device (2) is arranged behind the first transport device (1) in the stretching direction and the transport direction of the glass ribbon (4) extends from the first transport device (1) toward the second transport device (2), - wherein the individual transport devices (1, 2) are driven independently of one another, at least one device for scoring the glass ribbon in the region of the first transport device, wherein the device is arranged such that the scoring makes an angle α in the range of 80° to 100° with respect to the transport direction of the first transport device, - wherein the first and second transport devices (2) are arranged relative to each other such that the glass ribbon (4) is subjected to bending stress when transitioning from the first transport device to the second transport device.

27. Device according to claim 26, wherein the positions of the first transport device (1) and the second transport device (2) are different.

28. The device according to claim 27, wherein the first transport device (1) and the second transport device (2) have an angular difference and / or a height difference Δh.

29. The device according to claim 27, wherein the first transport device (1) and the second transport device (2) have a height difference Δh in the range of 75 to 225 mm and no angular difference.

30. The device according to any one of claims 26 to 29, wherein the device for scoring the glass ribbon is placed on the glass ribbon (4) at an angle β to the transport direction of the glass ribbon, wherein the angle β satisfies β=arccos(v1 / v 刻划 ), v 刻划 is the scoring speed of the scoring device and v1 is the transport speed of the first transport device (1).

31. The device according to any one of claims 26 to 29, wherein the device for scoring the glass ribbon comprises a scoring tool (13) for scoring on a flexible tool holder (12), wherein the flexible tool holder (12) is arranged on a rotating disk (11).

32. The device according to claim 31, wherein the elastic tool holder (12) is designed as an elastic arm and / or the scoring tool (13) for scoring is arranged on the tool holder (12) in the form of a diamond.

33. The device according to claim 31, wherein the elastic tool holder (12) is designed as an elastic arm and / or the scoring tool (13) for scoring is arranged as diamond dust on the tool holder (12).

34. The device according to any one of claims 26 to 29, wherein the device has a reversing device for reversing the glass ribbon (4) at the end of the first transport device (1), the reversing device comprising at least two guide wheels (14) and a shaft (15), wherein the reversing device has a drive and performs a 360° rotational movement parallel to the transport direction of the second transport device (2) and at a circumferential speed v 轮 Rotation, wherein the reversing device is configured in the device so that the glass ribbon (4) is guided downward by contact with the reversing device.

35. The device of claim 34, wherein the switching device is mounted in the device such that the position of the switching device in the device is variable in the x and z directions. 36 . The device according to claim 26 , wherein the transport device is designed as a belt and the belt is guided via pulleys.

37. The apparatus of claim 36, wherein the pulley has a diameter in the range 40 to 150 mm.

38. The device according to any one of claims 26 to 29, wherein the device comprises a device for separating a glass bead (41) from a glass ribbon (4).

39. The device according to claim 38, wherein separation is performed by means of laser cutting.

40. The device according to claim 38, wherein the device for separating the glass bead (41) is arranged in the area of ​​the second transport device (2).

41. An apparatus according to any one of claims 26 to 29, wherein the apparatus has a winding station for rolling up the glass ribbon segments (60, 61, 62) in the area of ​​a third transport device (3), wherein the winding station includes a paper conveying station and is configured so that the glass ribbon segments (60, 61, 62) are wound into a roll together with a spacer layer of paper.

42. An apparatus according to claim 41, wherein the apparatus has at least two packaging stations (160, 161), a device (23) for conveying paper, and at least one first and second robot (17, 20) in the area of ​​the third transport device (3), the packaging stations each including a stacking platform (18), wherein the first robot (17) is configured to transport the glass ribbon segments (60, 61, 62) from the third transport device (3) to the stacking platform (18) and the second robot (20) is configured to transport paper (26) from the device for conveying paper to the stacking platform (18).

43. The apparatus of claim 42, wherein the first robot (17) has a porous plate on which a vacuum is applied to receive the glass ribbon segments (60, 61, 62).

44. The device according to claim 43, wherein the porous plate is a porous plastic plate.

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