METHOD AND DEVICE FOR BENDING PANES

Abstract

A method for bending panes, includes providing a pane heated to bending temperature, securing the pane against a contact surface of a first bending mould, pressing the pane between the first bending mould and a press frame, transporting the pane on the press frame to a second bending mould, pressing the pane between the second bending mould and the press frame, securing the pane against the contact surface of the second bending mould, wherein surface pre-bending occurs in the inner region of the pane, transporting the pane on a tempering frame to a cooling device for the thermal tempering of the pane, wherein during transport, surface final bending occurs in the inner region of the pane by gravity.

Claims

1. A method for bending panes, comprising: providing a pane heated to bending temperature, securing the pane against a contact surface of a first bending mould, pressing the pane between the first bending mould and a press frame, wherein the contact surface has an outer surface section that is suitable for an edge final bending in an edge region of the pane, wherein the press frame has a press surface that is complementary to the outer surface section of the first bending mould, transporting the pane on the press frame to a second bending mould, wherein surface pre-bending occurs in an inner region of the pane surrounded by the edge region by means of gravity during transport, pressing the pane between the second bending mould and the press frame, wherein the second bending mould has a contact surface with an outer surface section that is suitable for the edge final bending in the edge region of the pane, wherein the press surface of the press frame is complementary to the outer surface section of the second bending mould, securing the pane against the contact surface of the second bending mould transporting the pane on a tempering frame to a cooling device for the thermal tempering of the pane.

2. The method according to claim 1, wherein by means of pressing the pane between the first bending mould and the press frame, edge pre-bending occurs in the edge region of the pane, by means of pressing the pane between the second bending mould and the press frame, edge pre-bending occurs in the edge region of the pane, edge final bending occurs during transport on the tempering frame.

3. The method according to claim 1, wherein by means of pressing the pane between the first bending mould and the press frame, edge pre-bending occurs in the edge region of the pane, by means of pressing the pane between the second bending mould and the press frame, edge final bending occurs in the edge region of the pane.

4. The method according to claim 1, wherein by means of pressing the pane between the first bending mould and the press frame, edge final bending occurs in the edge region of the pane.

5. The method according to claim 1, wherein during transport on the tempering frame, surface final bending of the surface occurs in the inner region of the pane by means of gravity.

6. The method according to claim 1, wherein the pane is secured against the contact surface of the first bending mould and against the contact surface of the second bending mould by blowing on the pane with a gaseous fluid, as a result of which the pane is raised and is pressed against the contact surface of the bending mould, and/or sucking the pane against the contact surface.

7. The method according to claim 1, wherein the press frame is moved laterally between a first press frame position associated with the first bending mould and a second press frame position associated with second bending mould relative to the first and the second bending mould to transport a pane from the first bending mould to the second bending mould.

8. The method according to claim 7, wherein, while the pane is secured against the contact surface of the first bending mould, the press frame is transported to the first press frame position.

9. The method according to claim 1, wherein, while the pane is secured against the contact surface of the second bending mould, the tempering frame for supporting the pane is transported to a first tempering frame position associated with the second bending mould, the pane is placed on the tempering frame, and the tempering frame carrying the pane is moved laterally relative to the second bending mould to a second tempering frame position for tempering the pane.

10. A device for bending panes for carrying out the method according to claim 1, comprising: a bending zone with a first bending mould and a second bending mould, wherein the first bending mould has a contact surface with an outer surface section suitable for an edge final bending in an edge region of a pane, and the second bending mould has a contact surface with an outer surface section suitable for the edge final bending in the edge region of a pane, a press frame for transporting a pane that has a press surface that is in each case complementary to the outer surface section of the first bending mould and to the outer surface section of the second bending mould, wherein the press frame is suitable for surface pre-bending in the inner region of a pane by means of gravity, wherein the first bending mould and the press frame are vertically movable relative to one another, and the second bending mould and the press frame are vertically movable relative to one another such that a pane can be pressed between the outer surface section of the first bending mould and the press surface of the press frame as well as between the outer surface section of the second bending mould and the press surface of the press frame.

11. The device according to claim 10, further comprising a tempering frame for transporting a pane from the bending zone to a tempering zone with a cooling device for the thermal tempering of a pane, wherein the tempering frame has a frame surface suitable for the edge final bending in the edge region of the pane and is suitably designed for surface pre-bending in the inner region of a pane by gravity.

12. The device according to claim 11, wherein the tempering frame is laterally movable relative to the second bending mould from a first tempering frame position associated with the second bending mould to a second tempering frame position in the tempering zone.

13. The device according to claim 10, wherein the contact surface of the first bending mould and the contact surface of the second bending mould have in each case an inner surface section for surface pre-bending or surface final bending in the inner region of a pane.

14. The device according to claim 10, further comprising a suction device for securing a pane against the contact surface of the first bending mould and/or a blowing device for raising and pressing a pane against the contact surface of the first bending mould, and/or a suction device for securing a pane against the contact surface of the second bending mould and/or a blowing device for raising and pressing a pane against the contact surface of the second bending mould.

15. The device according to claim 10, wherein the press frame is laterally movable relative to the first and second bending mould between a first press frame position associated with the first bending mould and a second press frame position associated with the second bending mould.

Description

[0043] The invention is explained in detail using exemplary embodiments and referring to the accompanying figures. They depict, in simplified, not-to-scale representation:

[0044] FIG. 1 a schematic representation of an exemplary embodiment of the device according to the invention for bending panes, in cross-section;

[0045] FIG. 2-7 the device according to the invention for bending panes of FIG. 1 at a later time in each case;

[0046] FIG. 8A-8B a schematic representation of the pressing of a pane between the first bending tool and the press frame;

[0047] FIG. 9 a flowchart of the method according to the invention for producing a pane.

[0048] Consider first FIG. 1, which illustrates, using a schematic representation, an exemplary embodiment of the device according to the invention in a cross-sectional view. Referring to FIG. 1, essential components of the device for bending panes referenced as a whole with the reference number 1 are described. The device 1 comprises a bending zone 2 for bending (glass) panes 5, a preheating zone 3, arranged to the side of the bending zone 2, with a heating device for heating the panes 5 to bending temperature, which is not shown in detail in FIG. 1 since, in the view of the figures, it is situated behind the bending zone 2, and, arranged to the side, a tempering zone 4 for cooling or tempering bent panes 5. The tempering zone 4 is coupled on the right side to the bending zone 2. The preheating zone 3 and the tempering zone 4 are, viewed from above, arranged at an angle of 90° to the bending zone 2 and are functionally coupled thereto. Here, the preheating zone 3, the bending zone 2, and the tempering zone 4 are in each case spatially separate regions of the device. The bending zone 2 is implemented in the form of a bending chamber closed or closable to the external environment. The bending zone 2 is, for this purpose, provided with an insulating wall such that the interior of the bending zone can be heated to and kept at a temperature (bending temperature) suitable for the bending operation of the panes 5. For heating the interior, the bending zone 2 has a heating device, which is not shown in detail in FIG. 1.

[0049] In the device 1, the panes 5 can be transported successively from the preheating zone 3 into the bending zone 2 and, finally, into the tempering zone 4. Provided for transport of the panes 5 from the preheating zone 3 into the bending zone 2 is a pane transport mechanism 6, comprising, in the embodiment of FIG. 1, a roller bed 7 with cylindrical rollers 8 for flat support of panes 5. The rollers 8 are actively and/or passively rotatably mounted, with their horizontally oriented axes of rotation, here, for example, parallel to the x-direction. By means of the rollers 8, panes 5 heated in the preheating zone 3 to bending temperature are brought individually in each case one after another into a removal position 22 in the bending zone 2. The transport direction for the pane 5 is perpendicular to the plane of the drawing.

[0050] The bending zone 2 has two separate bending stations 9, 9′, with a first bending station 9 and a second bending station 9′ arranged physically offset from one another in the horizontal x-direction. In the description of the two bending stations 9, 9′, the reference characters with “′” refer in each case to a component of the second bending station 9′, with components of the second bending station also possibly not having “′”, when this seems appropriate. For easier reference, all components of the second bending station 9′ are also referred to as “second” components, in contrast to the components of the first bending station 9, which are also referred to as “first” components.

[0051] The bending stations 9, 9′ have in each case a vertical holder 10, 10′ for releasable attachment of a bending tool 11, 11′. The holders 10, 10′ are in each case vertically displaceable by a holder moving mechanism 13, 13′ (not depicted in detail). Optionally, the holders 10, 10′ are laterally displaceable by the moving mechanism 13, 13′ in each case also with at least one horizontal movement component, in particular in the positive or negative x-direction. The bending tool 11, 11′ is in each case detachably mounted at the lower end of the holders 10, 10′. Each bending tool 11, 11′ has a downward-directed, convex contact surface 14, 14′ for the flat contact of a pane 5. With appropriate contact pressure, the pane 5 can be bent on the respective contact surface 14, 14′. The two contact surfaces 14, 14′ have, for this purpose, in each case an end or edge outer surface section 15, 15′ and an inner surface section 16, 16′ with mutually different surface contours (surface shapes), wherein the inner surface section 16, 16′ is completely surrounded (bordered) by the outer surface section 15, 15′.

[0052] In addition to the mutually different surface contours of an outer surface section 15, 15′ and an inner surface section 16, 16′ of one and the same bending tools 11, 11′, the contact surfaces 14, 14′ of the two bending tools 11, 11′ also have different surface contours. Specifically, the outer surface section 15 of the contact surface 14 of the first bending tool 11 has a surface contour that corresponds to a desired edge final bending, i.e., final bending, in a (for example, strip-shaped) edge region 17 of the pane 5, in other words, enables such final bending. The end edge region 17 of the pane 5 is adjacent a pane (cut) edge 19 arranged perpendicular to the two opposing pane primary surfaces.

[0053] The inner surface section 16 of the contact surface 14 of the first bending tool 11 has a surface contour that corresponds to a surface pre-bending, i.e., non-final bending, in an inner region 18 of the pane 5 completely surrounded by the edge region 17. The outer surface section 15′ of the contact surface 14′ of the second bending tool 11′ has a same surface contour as the outer surface section 15 of the contact surface 14 of the first bending tool 11 and has a surface contour that corresponds to the desired edge final bending in the edge region 17 of the pane 5. In contrast to the inner surface section 16 of the contact surface 14 of the first bending tool 11, the inner surface section 16′ of the contact surface 14′ of the second bending tool 11′ has a surface contour that corresponds to a surface final bending, i.e., a final or quasi-final bending, in the inner region 18 of the pane 5. The first holder 10 forms, together with the first bending tool 11, a first bending mould 12. In a corresponding manner, the second holder 10′ forms, together with the second bending tool 11′, a second bending mould 12′.

[0054] The two bending stations 9, 9′ are in each case provided with a suction device 20, 20′ for sucking a pane 5 against the contact surface 14, 14′. For this purpose, the contact surfaces 14, 14′ can, for example, be provided with evenly distributed suction holes (not shown) and/or an apron positioned at the edge. By means of a negative pressure or a vacuum that is produced, a pane 5 can be pulled against the contact surface 14, 14′.

[0055] The first bending station 9 further has a blowing device 21 (not shown in detail) by means of which a flowing gaseous fluid, for example, an air flow 33 can be produced in a vertical direction through the roller bed 7 at the removal position 22. As a result, a pane 5 can be raised from the removal position 22 in the direction of the bending mould 12. The removal position 22 is situated in a vertical direction directly below the bending tool 11 of the first bending mould 12.

[0056] The bending station 9 further has a press frame 25 (e.g., a press ring) for pressing and transporting a pane 5. The press frame 25 is fixedly mounted on an elongated carrier 27 and can be laterally displaced by moving the carrier 27 in a positive and negative x-direction relative to the first and second bending mould 12, 12′. The carrier 27 can be moved by a carrier movement mechanism 26 (not shown in detail) along its extension direction. Thus, the press frame 25 can be moved back and forth translationally in particular between a first press frame position 23 of the first bending station 9 and a second press frame position 24 of the second bending station 9′. The first press frame position 23 and the second press frame position 24 are situated here, for example, in the same horizontal plane. The removal position 22 is situated directly below the first press frame position 23.

[0057] The press frame 25 has an edge-positioned (for example, strip-shaped) press surface 28 (see FIGS. 8A and 8B), whose surface contour is complementary to the surface contour of the outer surface section 14 of the bending tool 11 of the first bending mould 12. The upward facing press surface 28 is suitable for pressing a pane 5 resting thereon in the edge region 17. The press frame 25 is not implemented full surface, but, instead, has an inner opening, which enables gravity pre-bending of the surface of the inner region 18 of a pane 5 placed thereon.

[0058] The tempering zone 4 laterally coupled to the bending zone 2 has two so-called “tempering boxes” 29, which are arranged offset from one another in the vertical direction. By means of the two tempering boxes 29, a flow of air can be generated in each case for air cooling a pane 5 situated between the two tempering boxes 29 in order to temper the bent pane 5. Situated in the tempering zone 4 is a tempering frame 30 for transport and support during tempering of a bent pane 5. The tempering frame 30 can be displaced laterally by a tempering frame movement mechanism 31 (not shown in detail here) along at least one horizontal movement component relative to the bending station 2. Specifically, the tempering frame 30 can be moved back and forth translationally in a horizontal plane between a second tempering frame position 32, which is situated between the two tempering boxes 29 of the tempering station 4, and a first tempering frame position 24, which is identical to the second press frame position. For this purpose, the bending zone 2 implemented as a bending chamber has a door 35. In this manner, the tempering frame 30 can be driven into the second bending zone 24, to pick up a fully bent pane 5 and to transport it into the tempering zone 4. From there, the pane 5 can be removed in a simple manner and further processed.

[0059] Reference is now made to FIG. 1 to 7, wherein the device 1 for bending panes 5 of FIG. 1 is depicted in each case at different successive times during a bending process in order to describe an exemplary method for bending panes 5. For better clarity, only selected components of the device 1 are provided with reference numbers.

[0060] FIG. 1 depicts a situation during the bending process wherein a pane 5 has been brought into the removal position 22 of the first bending station 9. The first bending mould 12 is situated in a raised position above the pane 5. The second bending mould 12′ is situated at approx. the same height as the first bending mould 12. Below the second bending mould 12′, the press frame 25 is situated in the second press frame position 24 of the second bending station 9′ with a further pane 5 placed thereon. The tempering frame 30 is situated in the second tempering frame position 32 of the tempering zone 4 between the two tempering boxes 29.

[0061] FIG. 2 depicts the device 1 for bending panes 5 at a later time than FIG. 1. The first bending mould 12 has been driven downward in the direction of the pane 5 from the raised position into a first lowered position. The pane 5 has been raised by blowing on with the blowing device air flow 33 (symbolically represented by arrows) generated by the blowing device 21 on its lower side in the vertical direction from the removal position 22 in the direction toward the first bending mould 12 and is pressed by the blowing device air flow 33 against the contact surface 14 of the first bending tool 11. In the first lowered position of the first bending mould 12, the contact surface 14 is lowered far enough for the pane 5 to be able to be pressed by the blowing device air flow 33 against the contact surface 14. In addition, the pane 5 is secured against the contact surface 14 by suction by means of the suction device 20. The suction device air flow 34 producing a negative pressure on the contact surface 14 is also symbolically represented by arrows. As a result of the typically incomplete contact against the contact surface 14, a pre-bending of the pane 5 occurs only in the edge region 17. Generally, the pressing pressure from the blowing device air flow 33 is not sufficient to produce a edge final bending in the edge region 17 of the pane 5. On the other hand, the sucking action of the suction device 20 serves substantially only for holding the pane 5 against the contact surface 14, until the press frame 25 has traveled under the pane 5, and has only a slight influence on the bending of the pane 5. Nevertheless, bubbles in the pane 5 can be removed thereby. In the inner region 18 of the pane 5, only pre-bending of the surface is still possible as result of the contact surface 14. FIG. 2 depicts a situation in which the pane 5 is already secured against the contact surface 14.

[0062] The second bending mould 12′ has been brought from the raised position into a lowered position in which there is surface contact between the contact surface 14′ and the pane 5 positioned on the press frame 25. Here, the pane 5 is pressed in the edge region 17 between the outer surface section 15′ of the contact surface 14′ of the bending tool 11′ and the press surface 28 of the press frame 25 (see FIGS. 8A and 8B). The press surface 28 as a shape complementary to the outer surface section 15′ of the contact surface 14. As a result, the edge region 17 of the pane 5 is preferably fully bent, in other words, receives its edge final bending. It is, however, also possible for the edge region 17 to only be pre-bent. Subsequently, the pane 5 is secured against the contact surface 14′ by suction by means of the suction device 20′. It is conceivable for the contact surface 14′ to, alternatively, have a small distance from the pane 5, if suction of the pane 5 over a certain distance is possible. The suction device air flow 34′ generating negative pressure on the contact surface 14′ is symbolically represented by arrows. In contrast to the first bending mould 12 where only holding of the pane 5 is intended and the negative pressure thus causes no bending (at least no notable bending) of the pane 5, the suction of the pane 5 against the contact surface 14′ can also serve for bending the pane 5, in other words, sufficient mechanical pressure to bend the pane 5 as desired is generated by the suction. Thus, the pane 5 is pre-bent on the second contact surface 14′ in the inner region 18 of the pane 5. In addition, a previously produced edge final bending in the edge region 17 can be maintained on the pane 5. The tempering frame 30 is still situated in the tempering device 4 between the two tempering boxes 29.

[0063] FIG. 3 depicts the device 1 for bending panes 5 at a later time than FIG. 2. The first bending mould 12 has again been moved upward into its raised position, wherein the pane 5 is secured against the contact surface 14 by the suction device air flow 34. The second bending mould 12′ has also been moved upward into its raised position, wherein the pane 5 is secured against the contact surface 14′ by the suction device air flow 34′. The press frame 25 is pane-free and is situated below the second bending mould 12′. The tempering frame 30 is still situated in the tempering device 4 between the two tempering boxes 29.

[0064] FIG. 4 depicts the device 1 for bending panes 5 at a later time than FIG. 3. The first bending mould 12 is depicted in a situation wherein it has moved downward on the way into a second lowered position above the first lowered position. The pane 5 is still secured against the contact surface 14 by the suction device air flow 34. The press frame 25 has been moved translationally by means of the carrier movement mechanism 26 on the carrier 27 in a horizontal direction (negative x-direction) from the second press frame position 24 to the first press frame position 23 and is situated below the first bending mould 12. The second bending mould 12′ is still situated in its raised position, wherein the pane is secured against the contact surface 14′ by the suction device air flow 34′. The tempering frame 30 has been moved from the tempering position 32 into the second press frame position 24 of the second bending station 9′ and is situated below the second bending mould 12′.

[0065] FIG. 5 depicts the device 1 for bending panes 5 at a later time than FIG. 4. The first bending mould 12 has now been moved into the second lowered position, wherein the pane 5 comes into contact with the press frame 25. Here, the pane 5 is pressed in the edge region 17 between the outer surface section 15 of the contact surface 14 of the bending tool 11 and the press surface 28 of the press frame 25 (see FIGS. 8A and 8B). The press surface 28 has a shape complementary to the outer surface section 15 of the contact surface 14. The edge region 17 of the pane 5 is, thereby, pre-bent or fully bent. A major advantage of the pressing of the pane 5 against the press frame 25 is a resultant very precise definition of the position of the pane 5 on the press frame 5 with precise contact of the edge region 17 of the pane 5 on the press surface 28 of the press frame 25. This enables precise positional fixation of the pane 5 on the press frame 25 by means of the stop (not shown in detail) resting against the pane 5. Thus, particularly high production accuracy and good optical quality of the bent pane can be achieved. The second bending mould 12′ has been moved into its lowered position, wherein the pane 5 is placed on the tempering frame 30.

[0066] FIG. 6 depicts the device 1 for bending panes 5 at a later time than FIG. 5. The first bending mould 12 and second bending mould 12′ have, in each case, been moved back into their raised position. The press frame 25 has been moved translationally in a horizontal direction (positive x-direction) from the first press frame position 23 to the second press frame position 24 and is situated below the second bending mould 12′. In particular, during transport, the pane 5 situated on the press frame 25 is pre-bent in the inner region 18 by gravity. As a result of the pressing in the edge region 17, the surface pre-bending by means of gravity is limited in the inner region 18. The tempering frame 30 with the pane 5 placed thereupon has been moved from the second press frame position 24 of the second bending station 9′ into the tempering position 32 and is situated between the two tempering boxes 29. To enable exit from the bending zone 2, the door 35 was opened for a short time. Thus, an appreciable temperature loss in the bending zone 2 can be prevented. During transport on the tempering frame 30, an edge final bending of the edges and a surface final bending of the pane 5 can be done by gravity. The tempering frame 30 has, for this purpose, an upwardly directed frame surface 36 for contact with the pane 5, which is suitably designed for an edge final bending. In addition, the tempering frame 30 is suitably designed for a surface final bending by gravitation.

[0067] FIG. 7 depicts the device 1 for bending panes 5 at a later time than FIG. 6. The first bending mould 12 and second bending mould 12′ are still situated in the raised position. A new pane 5 has been brought into the removal position 22 of the first bending station 9. The pane 5 situated on the press frame 25 can be pressed and suctioned by the second bending mould 12′. The pane 5 situated in the tempering zone 32 is cooled by an air flow for tempering, as illustrated by arrows. The situation of FIG. 7 thus resembles the situation of FIG. 1. In this manner, the bending process can be carried out continuously.

[0068] Although this is not shown in FIG. 1 to 7, it would be equally possible for the press frame 25 to remain fixed in position (stationary) in each case within the bending station 2 and for only the first bending mould 12 and second bending mould 12′ to be laterally displaced in each case relative to the stationary press frame 25.

[0069] FIGS. 8A and 8B depict the pressing of the pane 5 between the press frame 25 and the contact surface 14 of the first bending tool 11. Discernibly, the contact surface 14 has an outer surface section 15 and an inner surface section 16 with different surface contours. The outer surface section 15 has a surface contour that corresponds to the desired edge final bending in the edge region 17 of the pane 5 or enables such bending. The inner surface section 16 has a surface contour that corresponds to a surface pre-bending in the inner region 18 of the pane 5 or enables such pre-bending. The press surface 28 of the press frame 25 has a surface contour that is complementary to the surface contour of the outer surface section 15 of the contact surface 14. FIG. 8A depicts a situation in which the inner region 18 of the pane 5 comes to rest against the inner surface section 16 (first contact). This can already be construed as pressing. In FIG. 8B, the pane 5 has, even in the edge region 17, made complete contact against the outer surface section 15 of the contact surface 14, with the desired edge final bending in the edge region 17 having been produced.

[0070] FIG. 9 illustrates, referring to a flowchart, the successive steps of the method for producing the pane 5. Therein, in a first step I, a pane 5 heated to bending temperature is provided. In a second step II, the pane 5 is secured against the contact surface 14 of the first bending mould 12, wherein the contact surface has an outer surface section 15 that corresponds to an edge final bending in edge region 17 of the pane 5 and an inner surface section 16 that corresponds to a surface pre-bending in the inner region of the pane 5, wherein optionally edge pre-bending is done in the edge region 17 and optionally pre-bending of the surface is done in the inner region 18 of the pane 5. In a third step II, the pane 5 is pressed in the edge region 17 against the press surface 28 of the press frame 25, wherein the press surface 28 is complementary to the outer surface section 15 of the contact surface 14, wherein a (further) edge pre-bending or an edge final bending is done in the edge region 17 of the glass pane 5. In a fourth step IV, the pane 5 is transported on the press frame 25 to the second bending mould 12′, wherein, in particular, during transport a (further) surface pre-bending in the inner region 18 of the pane 5 is done by means of gravity. In a fifth step V, the pane 5 is pressed against the contact surface 14′ of the second bending mould 12′ and then secured against the contact surface 14′, wherein (if not already done) edge pre-bending or edge final bending is done in the edge region 17 and surface pre-bending or final bending of the surface is done in the inner region 18 of the pane 5.

[0071] In an exemplary embodiment of the method according to the invention, edge pre-bending in the edge region of the pane 5 is done by means of pressing the pane 5 between the first bending mould 12 and the press frame 25, and edge pre-bending in the edge region 17 of the pane 5 is done by means of pressing the pane 5 between the second bending mould 12′ and the press frame 25, wherein an edge final bending of the edges is done during transport on the tempering frame 30. During transport on the press frame 25, surface pre-bending is done in the inner region of the pane 5 by gravity. During transport on the tempering frame 30, surface final bending is done in the inner region of the pane 5 by gravity. The pane thus receives its final shape only on the tempering frame.

[0072] In another exemplary embodiment of the method according to the invention, edge pre-bending in the edge region 17 of the pane 5 is done by pressing the pane 5 between the first bending mould 12 and the press frame 25, and an edge final bending in the edge region 17 of the pane 5 is done by means of pressing the pane 5 between the second bending mould 12′ and the press frame 25. During transport on the tempering frame 30, a further edge final bending is done only in the sense that the already present edge final bending is not lost, i.e., the edge final bending is maintained. During transport on the press frame 25, surface pre-bending in the inner region of the pane 5 is done by gravity. During transport on the tempering frame 30, surface final bending in the inner region of the pane 5 is done by gravity. The pane 5 thus receives its final shape in the edge region 17 already by means of the second bending mould 12′. The pane 5 receives its final shape in the inner region only on the tempering frame 30.

[0073] In another exemplary embodiment of the method according to the invention, an edge final bending in the edge region 17 of the pane 5 is done by pressing the pane 5 between the first bending mould 12 and the press frame 25. During transport on the press frame 25 and tempering frame 30, a further edge final bending is done only in the sense that the already present edge final bending is not lost, i.e., the edge final bending is maintained. During transport on the press frame 25, surface pre-bending in the inner region of the pane 5 is done by gravity. During transport on the tempering frame 30, a surface final bending in the inner region of the pane 5 is done by gravity. The pane 5 thus receives its final shape in the edge region 17 already by means of the first bending mould 12. The pane 5 receives its final shape in the inner region only on the tempering frame 30.

[0074] In all embodiments of the method, edge pre-bending and/or surface pre-bending can be done by securing the pane 5 against the first bending mould 12 or the second bending mould 12′. In addition, a surface final bending can be done by securing the pane 5 against the second bending mould 12′.

[0075] From the above, it is clear that the invention provides a method as well as a compact device for producing panes by means of which a simple and economical production of panes with short cycle times is enabled. In particular, the throughput with complex glass designs can be increased. Particularly advantageously, the transport time on the press frame between the two bending moulds can be used for gravity bending in the inner region of the surface. By pressing a pane between a first bending mould and a press frame in the edge region of the pane, wherein the pane is pre-bent or final bent in the edge region, a precise definition of position of the pane can be achieved such that the pane can be produced with high quality requirements.

LIST OF REFERENCE CHARACTERS

[0076] 1 device [0077] 2 bending zone [0078] 3 preheating zone [0079] 4 tempering zone [0080] 5 pane [0081] 6 pane transport mechanism [0082] 7 roller bed [0083] 8 roller [0084] 9,9′ bending station [0085] 10,10′ holder [0086] 11,11′ bending tool [0087] 12,12′ bending mould [0088] 13,13′ holder movement mechanism [0089] 14,14′ contact surface [0090] 15,15′ outer surface section [0091] 16,16′ inner surface section [0092] 17 edge region [0093] 18 inner region [0094] 19 pane edge [0095] 20,20′ suction device [0096] 21 blowing device [0097] 22 removal position [0098] 23 first press frame position [0099] 24 second press frame position, first tempering frame position [0100] 25 press frame [0101] 26 carrier movement mechanism [0102] 27 carrier [0103] 28 press surface [0104] 29 tempering box [0105] 30 tempering frame [0106] 31 tempering frame movement mechanism [0107] 32 second tempering frame position [0108] 33 blowing device air flow [0109] 34,34′ suction device air flow [0110] 35 door [0111] 36 frame surface