EP3661881A1 - Verfahren und vorrichtung zum biegen von scheiben - Google Patents
Verfahren und vorrichtung zum biegen von scheibenInfo
- Publication number
- EP3661881A1 EP3661881A1 EP18732355.5A EP18732355A EP3661881A1 EP 3661881 A1 EP3661881 A1 EP 3661881A1 EP 18732355 A EP18732355 A EP 18732355A EP 3661881 A1 EP3661881 A1 EP 3661881A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- disc
- bending
- pressing
- frame
- bending mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005452 bending Methods 0.000 title claims abstract description 346
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000003825 pressing Methods 0.000 claims abstract description 144
- 230000005484 gravity Effects 0.000 claims abstract description 28
- 230000000295 complement effect Effects 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000005496 tempering Methods 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 description 15
- 230000007246 mechanism Effects 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 8
- 235000012431 wafers Nutrition 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000007723 transport mechanism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
- C03B23/0302—Re-forming glass sheets by bending by press-bending between shaping moulds between opposing full-face shaping moulds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/025—Re-forming glass sheets by bending by gravity
- C03B23/0252—Re-forming glass sheets by bending by gravity by gravity only, e.g. sagging
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
- C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
- C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
- C03B23/0355—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet by blowing without suction directly on the glass sheet
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
- C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
- C03B23/0357—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet by suction without blowing, e.g. with vacuum or by venturi effect
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/20—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by gripping tongs or supporting frames
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/20—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by gripping tongs or supporting frames
- C03B35/202—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by gripping tongs or supporting frames by supporting frames
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2225/00—Transporting hot glass sheets during their manufacture
- C03B2225/02—Means for positioning, aligning or orientating the sheets during their travel, e.g. stops
Definitions
- the invention relates to a method and apparatus for bending discs and their use.
- various bending methods are used which have already found their way into the patent literature.
- WO 2012/080072 describes a method with a stepwise bending of glass panes in the peripheral and interior regions.
- the glass sheet is first driven on a Vorbiegering in an oven, wherein the disc edge is pre-bent, followed by a bending of the disc rim by a first aspirator, depositing and bending the glass sheet in the area on a Endbiegering and final bending to the desired final geometry by means of a second suction. Due to the stepwise bending of the glass pane, optical defects can be reduced in the case of complex pane shapes.
- WO 2004/087590 and WO 2006072721 each describe a method in which the glass sheet is first pre-bent on a bending frame by gravity, followed by a press bending by means of an upper or lower bending mold.
- the object of the present invention is to provide a comparison with the previously known method improved method and a corresponding device for bending glass sheets available.
- edge pre-bend When used as a "edge pre-bend”, the term refers to the incomplete bending of the disk in a peripheral edge region of the disk adjacent to a disk edge, typically a peripheral region surrounding the disk in a strip-like manner.
- the strip width is in the range of 3 to 150 mm.
- the disk edge is formed by a (cut) surface, which is typically perpendicular to the two opposed disk major surfaces.
- face bend When used as a “face bend”, the term refers to the incomplete bend of the disc in a central or interior area of the disc that is surrounded by the edge area and directly adjacent to the edge area.
- final bend refers to the complete bending of the disc.
- marginal bend the term refers to the complete bend in the edge region of the disc, in use as a "face end bend” on the complete bend in the interior of the disc.
- disk generally refers to a glass sheet, in particular a thermally toughened soda-lime glass.
- the term “laterally” or “laterally displaceable” denotes a movement with at least one horizontal movement component, whereby a component can be arranged laterally relative to another component.
- the disk bending apparatus typically includes several structurally and functionally distinct zones.
- An essential component according to the invention is a thermal bending zone for bending heated panes, which is advantageously equipped with a heating device for heating panes.
- the bending zone may be brought to a temperature which permits plastic deformation of discs and is typically in the range of 600 ° C to 750 ° C.
- the bending zone comprises at least two bending molds, in particular a first bending mold and a second bending mold.
- the first bending mold and the second bending mold each have a contact surface for contacting a disk.
- the contact surface of the first bending or second bending mold has an outer surface portion and an inner surface Surface portion on or is composed of the outer and inner surface portion.
- the outer surface portion is suitably designed for a marginal end bend in an edge region of the disc.
- the inner surface section of the first bending mold or second bending mold is preferably suitably designed for surface pre-bending in a central or inner region of the pane surrounded by the edge region.
- the inner surface portion of the second bending mold may be suitably formed for a ceremoninendbiegung.
- the phrase "suitably formed" in connection with the outer surface portion of the contact surface is to be understood so that the outer surface portion is formed so that a Randendbiegung of the disc can be generated.
- the disc does not necessarily have to be subjected to a marginal end deflection, but it can also be done only a Randvorbiegung.
- the Randendbiegung is then generated only in the further process management.
- the outer surface portion need not necessarily have a shape for this purpose, which is complementary to a marginal end-bent disc.
- the inner surface portion of the contact surface "suitably formed” means that the inner surface portion is formed so that a legislativenvorbiegung of the disc can be generated, which does not necessarily have to be a legislativenvorbiegung.
- the inner surface section of the second bending mold is alternatively designed to be suitable for a surface end bend, this means that a surface end bend can be generated, but does not necessarily have to be produced.
- the mecanicnendbiegung can then be generated in the further process management.
- the first bending mold and the second bending mold each have a means for fixing a disk to the respective contact surface.
- the means for fixing a disk to the contact surface advantageously comprises a pneumatic suction device for sucking in a gaseous fluid, in particular air, through which the disk can be pulled by means of negative pressure against the respective contact surface.
- the contact surface can be provided, for example, with at least one suction hole, advantageously with a plurality of suction holes distributed uniformly over the contact surface, for example, at which a negative pressure can be applied to a suction effect on the contact surface.
- the suction device may alternatively or additionally comprise a skirt surrounding the contact surface, by means of which a negative pressure can be generated at the contact surface.
- the suction device typically generates directed upward flow of a gaseous fluid, in particular air, which is sufficient to hold the disc to the contact surface. This makes it possible in particular to place a frame for receiving the disc fixed to the contact surface, below the disc.
- the means for fixing a disk to the contact surface advantageously comprises a pneumatic blowing device for generating a gaseous flow of fluid, in particular an air stream, which is designed such that a disk is blown from below by the gaseous fluid stream, thereby lifted up and against the contact surface of the first and second bending mold can be pressed.
- the blowing device may in particular be designed such that the disk fixed to the contact surface can be pre-bent by the pressure exerted by the gaseous fluid flow in the edge region and / or in the inner region, advantageously at least in the edge region.
- fixing refers to a fixation of a disk to the contact surface, whereby the disk can be pressed against the contact surface and / or sucked to the contact surface.
- the fixing of a disc on the contact surface is not necessarily connected to a bending process.
- the contact surfaces of the first and second bending mold are each oriented downwards for contact with a disk.
- the disk bending apparatus further comprises a press frame (eg press ring) for transporting and pressing a disk.
- the pressing frame has a pressing surface (contact surface) for a disk, which is designed to be complementary to the outer surface portion of the first bending mold or second bending mold, which is suitably designed for edge end bending.
- the pressing surface is formed for example in the form of a strip, for example with a strip width in the range of 3 to 150 mm.
- the pressing surface is oriented to contact with a disc upwards.
- the pressing frame for a ceremoninvorbiegung by gravity in the inner region of the disc is suitably formed, wherein a sagging of the inner region of the disc downwards by gravity is possible.
- the pressing frame can be open for this purpose, ie be provided with a central opening, or be formed over the entire surface, as long as it is possible for the interior of the pane to sag.
- An open design is preferred in view of easier wafer processing. It is understood that a greater width of a strip-shaped pressing surface by a better weight distribution advantageous with regard to the avoidance of unwanted markings (changes in the flat surfaces of the disc), wherein the pressing of the disc in the edge region on the pressing frame can counteract the generation of markings.
- the pressing surface of the pressing frame has a defined geometry, wherein the pressing frame is sufficiently rigid for this purpose.
- the pressing frame is shaped for example as a casting, wherein the pressing surface is produced for example by milling.
- the disc In gravity bending, the disc is pre-bent by its own weight. By the prior pressing of the disc edge against the pressing surface of the pressing frame, the felicitnvorbiegung the disc can be reduced. In addition, it is advantageously possible to use a stop for fixing the pane during transport on the pressing frame.
- the first bending mold and the pressing frame are displaceable in the vertical direction relative to each other, so that the disc in the edge region between the outer surface portion of the first bending mold and the pressing surface of the pressing frame is compressible.
- the disk is thereby bent or bent in the edge area.
- the first bending mold is coupled to a movement mechanism by means of which the first bending mold can be delivered to the pressing frame.
- the pressing frame of the first bending mold is delivered.
- the second bending mold and the pressing frame are displaceable in the vertical direction relative to each other, so that the disk in the edge region between the outer surface portion of the second bending mold and the pressing surface of the pressing frame is compressible.
- the disk is thereby bent or bent in the edge area.
- the second bending mold is coupled to a movement mechanism by means of which the second bending mold can be delivered to the pressing frame.
- the pressing frame of the second bending mold is delivered.
- the press frame between a first press frame position associated with the first bending mold and a second press frame position associated with the second bending mold is reciprocally movable relative to the first and second bending mold in a reciprocal manner (ie with at least one horizontal movement component).
- the pressing frame in the horizontal plane reciprocally and translationally (1-dimensional) is movable.
- the first press frame position is located in a vertical direction (eg directly). half of the first bending mold and the second pressing frame position in the vertical direction (eg directly) below the second bending mold.
- the device according to the invention also has a preheating zone with a heating device for heating slices to a bending temperature, and a transport mechanism, in particular of the roller bed type, for transporting slices from the preheating zone to the bending zone, in particular to a removal position (eg directly) below the first bending form.
- the roller bed is advantageously designed so that individual slices can be transported one after the other to the removal position.
- the removal position may in particular correspond to an end portion of the roll bed.
- the device according to the invention further comprises a thermal biasing zone with a cooling device for thermally toughening a disc, wherein a biasing frame (for biasing ring) for transporting a disc from one of the second bending mold associated first biasing frame position, which may be in particular identical to the second Pressrahmenposition to one second biasing frame position in the biasing zone relative to the second bending mold in a reciprocal manner laterally movable (ie, with at least one horizontal movement component).
- the biasing frame in the horizontal plane reciprocally and translationally (1-dimensional) movable.
- the pretensioning frame is suitably designed for a surface end bending by gravity in the inner region of the disk. If a disk deposited on the leader frame is first subjected to edge pre-bending and surface pre-bending, edge end deflection and surface deflection by gravity can be achieved during transport on the leader frame.
- the device according to the invention for bending disks serves, in particular, for carrying out the method according to the invention which is described below. In this respect, reference is made to the above statements.
- the method according to the invention comprises a step in which a wafer heated to the bending temperature is provided.
- the method includes a further step of securing the wafer to a contact surface of a first bending mold.
- a fixing of the disc takes place at the contact surface of the first bending mold in that the disc is lifted by blowing with a gaseous fluid and pressed against the contact surface of the first bending mold.
- the disc is fixed by suction on the contact surface of the first bending mold.
- the pane can be subjected to a marginal prebending in the edge area and / or a surface pre-bending in the interior area.
- the method comprises a further step in which the disc is pressed between the first bending mold and a pressing frame.
- the contact surface has an outer surface portion which is suitably designed for edge end bending in an edge region of the disk.
- the pressing frame has a pressing surface which is complementary to the outer surface portion of the first bending mold. In this case, an edge bend or edge bend takes place in the edge region of the pane.
- the method comprises a further step, in which the wafer is transported on the pressing frame to a second bending mold, wherein, during transport, surface pre-bending takes place in the inner region of the pane surrounded by the edge region by gravity.
- the method comprises a further step in which the disk is pressed between the second bending mold and the pressing frame, wherein the second bending mold has a contact surface with an outer surface section suitably designed for the edge end bending in the edge region of the disk, the pressing surface of the pressing frame complimenting to the outer surface portion of the second bending mold.
- an edge bend or edge bend takes place in the edge region of the pane.
- the method includes a further step of securing the disk to a contact surface of the second bending mold.
- a fixing of the disc takes place at the contact surface of the second bending mold in that the disc is lifted by blowing with a gaseous fluid and pressed against the contact surface of the second bending mold.
- the disc is fixed by suction on the contact surface of the second bending mold.
- the pane can be subjected to edge bending in the edge region and / or surface pre-bending and / or surface bending inside.
- the disc is fixed by suction on the second bending mold, wherein the suction is so strong that the disc is subjected to a ceremoniesnendbiegung indoors and possibly a Randendbiegung in the edge region.
- the method includes a further step of transporting the wafer on a (cool) biasing frame to a cooling device for thermally toughening the wafer.
- a further step of transporting the wafer on a (cool) biasing frame is carried out by pressing the disc between the first bending mold and the pressing frame a Randvorbiegung in the edge region of the disc.
- a further edge pre-bending takes place in the edge region of the disk.
- a further advantageous embodiment of the method according to the invention is carried out by pressing the disc between the first bending mold and the pressing frame a Randvorbiegung in the edge region of the disc.
- a marginal end bending takes place in the edge region of the disk.
- the pressing frame between a first Pressrahmenposition which is associated with the first bending mold and is preferably (eg directly) below the first bending mold, and a second Pressrahmenposition which is associated with the second bending mold and preferably ( eg directly) below the second bending mold, moved laterally relative to the first and second bending molds to transport a disk from the first bending mold to the second bending mold.
- the pressing frame is moved reciprocally (bidirectionally) translationally (1-dimensionally) in a horizontal plane between the first pressing frame position and the second pressing frame position.
- the disc is transported by a transport mechanism, in particular of the roller bed type, to a picking position associated with the first bending mold and preferably (e.g., directly) below the first bending mold and, for example, directly below the first molding frame position.
- the disk can then be fixed to the contact surface of the first bending mold.
- the pressing frame is transported to the first pressing frame position.
- the biasing frame while the disc is fixed to the second bending mold, the biasing frame to a first biasing frame position associated with the second bending mold (typically below the second bending mold), the disc is deposited on the biasing frame, and the biasing frame carrying the disc is moved laterally of the first and second bending dies to a second biasing frame position for thermally toughening the disc.
- the biasing frame is reciprocally (bidirectionally) translationally (1-dimensionally) moved in a horizontal plane between the first header frame position and the second header frame position.
- the bend on the second bending mold can give the disk a final or quasi-final shape.
- the shape of the disk on the leader frame will still (usually slightly) change, for which purpose the biasing frame preferably has a frame surface adapted for edge end flexure.
- the biasing frame is designed for a ceremoninendbiegung by gravity suitable. The disc thus receives on the leader frame its final shape.
- the invention extends to the use of the device according to the invention and of the method according to the invention for the production of discs for means of transport for traffic on land, in the air or on water, in particular in motor vehicles, and in particular for rear windows in motor vehicles.
- Figure 1 is a schematic representation of an exemplary embodiment of the device according to the invention for bending discs in cross section.
- Fig. 2-7 the device according to the invention for bending discs of Figure 1 at a later time in each case.
- 8A-8B is a schematic representation of the Verpessung a disc between the first bending tool and the pressing frame;
- FIG. 1 illustrates a schematic representation of an exemplary embodiment of the device according to the invention in a cross-sectional view.
- the device 1 comprises a bending zone 2 for bending (glass) panes 5, a preheating zone 3 arranged laterally of the bending zone 2, with a heating device for heating the panes 5 to the bending temperature, which in FIG.
- the biasing zone 4 is coupled to the right side of the bending zone 2.
- the preheating zone 3 and the prestressing zone 4 are arranged in a top view at an angle of 90 ° to the bending zone 2 and are functionally coupled thereto.
- the preheating zone 3, the bending zone 2 and the prestressing zone 4 are here each spatially separate areas of the device.
- the bending zone 2 is designed in the form of a bending chamber closed or closable to the external environment.
- the bending zone 2 is provided for this purpose with an insulating wall 36, so that the interior of the bending zone can be heated and maintained at a suitable for the bending operation of the discs 5 temperature (bending temperature).
- the bending zone 2 has a heating device, which is not shown in detail in FIG.
- the slices 5 can be successively transported from the preheating zone 3 into the bending zone 2 and finally into the pretensioning zone 4.
- a disk transport mechanism 6 is provided, which in the embodiment of FIG. 1 comprises a roller bed 7 with cylindrical rollers 8 for the flat support of disks 5.
- the Rollers 8 are actively and / or passively rotatably mounted with their horizontally aligned axes of rotation, here for example parallel to the x-direction.
- the bending zone 2 has two separate bending stations 9, 9 ', wherein a first bending station 9 and a second bending station 9' are spatially offset from one another in the horizontal x-direction.
- the reference numerals refer in each case to a component of the second bending station 9', wherein components of the second bending station can not have any, if this appears appropriate.
- 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.
- the bending stations 9, 9 'each have a vertical support 10, 10' for releasable attachment of a bending tool 1 1, 1 1 '.
- the brackets 10, 10 ' are displaceable by a non-illustrated support movement mechanism 13, 13' each in the vertical direction.
- the holders 10, 10 ' are laterally displaceable by the movement mechanism 13, 13', in each case also with at least one horizontal movement component, in particular in the positive or negative x direction.
- At the lower end of the brackets 10, 10 ' is in each case the bending tool 1 1, 1 1' detachably mounted.
- Each bending tool 1 1, 1 1 ' has a downwardly directed, konve ve contact surface 14, 14' for the flat contact a disc 5.
- the disc 5 at the respective contact surface 14, 14 ' are bent.
- the two contact surfaces 14, 14 ' have for this purpose in each case an end or marginal outer surface portion 15, 15' and an inner surface portion 16, 16 'with mutually different surface contours (surface shapes), wherein the inner surface portion 16, 16' of outer surface portion 15, 15 'completely surrounded (edged) is.
- outer surface portion 15 'and inner surface portion 16, 16' of a same bending tool 1 1, 1 1 'and the contact surfaces 14, 14' of the two bending tools 1 1, 1 1 ' have different surface contours.
- the outer surface portion 15 of the contact surface 14 of the first bending tool 1 1 has a surface contour, which corresponds to a desired Randendbiegung, ie final bending, in a (eg strip-shaped) edge region 17 of the disc 5, that allows such a final bend.
- the terminal edge region 17 of the disk 5 adjoins a disk (edge) edge 19 arranged perpendicular to the two opposite disk main surfaces.
- the inner surface section 16 of the contact surface 14 of the first bending tool 1 1 has a surface contour which corresponds to a surface pre-bending, ie non-final bending, in an inner region 18 of the pane 5 which is completely surrounded by the edge region 17.
- the outer surface portion 15 'of the contact surface 14' of the second bending tool 1 1 ' has a same surface contour as the outer surface portion 15 of the contact surface 14 of the first bending tool 1 1 and has a surface contour corresponding to the desired Randendbiegung in the edge region 17 of the disc 5.
- the inner surface section 16 'of the contact surface 14' of the second bending tool 1 1 ' has a surface contour which corresponds to a surface end bend, ie a final or quasi-final bend. in the inner region 18 of the disc 5 corresponds.
- the first holder 10 forms, together with the first bending tool 1 1, a first bending mold 12.
- the second holder 10 'together with the second bending tool 1 1' forms a second bending mold 12 '.
- the two bending stations 9, 9 ' are each provided with a suction device 20, 20' for sucking a disk 5 against the contact surface 14, 14 '.
- the contact surfaces 14, 14 ' can be provided for this purpose, for example with evenly distributed suction holes (not shown) and / or a marginal apron.
- a disk 5 can be pulled against the contact surface 14, 14 '.
- the first bending station 9 further has a blowing device 21, not shown, through which a flowing gaseous fluid, for example an air stream 33, can be generated in the vertical direction through the roller bed 7 at the removal position 22. In this way, a disc 5 can be lifted from the removal position 22 in the direction of the bending mold 12.
- the removal position 22 is located in the vertical direction directly below the bending tool 1 1 of the first bending mold 12th
- the bending station 9 also has a press frame 25 (eg press ring) for pressing and transporting a disk 5.
- the press frame 25 is fixedly attached to an elongate carrier 27 and can be laterally displaced by moving the carrier 27 in the positive and negative x directions relative to the first and second bending molds 12, 12 '.
- the carrier 27 can be moved by a non-illustrated carrier movement mechanism 26 along its extension direction. In this way, the pressing frame 25 can in particular be moved back and forth in translation between a first pressing frame position 23 of the first bending station 9 and a second pressing frame position 24 of the second bending station 9 '.
- the first press frame position 23 and the second press frame position 24 are here, for example, in the same horizontal plane.
- the removal position 22 is located directly below the first pressing frame position 23.
- the pressing frame 25 has a marginal (eg strip-shaped) pressing surface 28 (see FIGS. 8A and 8B) whose surface contour is complementary to the surface contour of the outer surface portion 14 of the bending tool 1 1 of the first bending mold 12 is.
- the upwardly facing pressing surface 28 is suitable for pressing a resting disc 5 in the edge region 17.
- the pressing frame 25 is not formed over the entire surface, but has an inner opening, which allows a ceremoninvorbiegung of the inner region 18 of a disc 5 deposited thereon by gravity.
- the pretensioning zone 4 which is coupled laterally to the bending zone 2, has two so-called pretensioning boxes 29, which are arranged offset from one another in the vertical direction.
- an air flow for air cooling of a disk 5 located between the two biasing boxes 29 can be generated in each case in order to bias the bent disk 5.
- the biasing zone 4 is a biasing frame 30 for transporting and supporting during biasing of a bent disc 5.
- the biasing frame 30 can be laterally displaced along at least one horizontal movement component relative to the bending station 2 by a lead frame moving mechanism 31 which is not shown in detail be offset.
- the biasing frame 30 may translate between a second biasing frame position 32 located between both biasing boxes 29 of the biasing station 4 and a first biasing frame position 24 that is identical to the second pressing frame position in a horizontal plane to be moved.
- the bending zone 2 designed as a bending chamber has a door 35. In this way, the biasing frame 30 can be moved into the second bending zone 24 to receive a finished bent disc 5 and to transport it into the pretensioning zone 4. From there, the disk 5 can be easily removed and further processed.
- FIGS. 1-7 respectively show the apparatus 1 for bending disks 5 of FIG. 1 at various successive times during a bending process to describe an exemplary method of bending disks 5. For better clarity, only selected components of the device 1 are provided with reference numbers.
- FIG. 1 shows a situation during the bending process in which a disk 5 has been moved into the removal position 22 of the first bending station 9.
- the first bending mold 12 is located in an elevated position above the disc 5.
- the second bending mold 12 ' is located approximately at the same height as the first bending mold 12.
- Below the second bending mold 12' is the pressing frame 25 in the second Press frame position 24 of second bending station 9 'with a further disc 5 deposited thereon.
- the biasing frame 30 is located in the second prestressing frame position 32 of the prestressing zone 4 between the two prestressing boxes 29.
- FIG. 2 shows the device 1 for bending disks 5 at a later time than in FIG. 1.
- the first bending mold 12 is moved in the direction of the disc 5 from the elevated position to a first lowered position downward.
- the disk 5 has been lifted by blowing on it with the blower air flow 33 (symbolically represented by arrows) generated by the blowing device 21 on its underside in the vertical direction from the removal position 22 in the direction of the first bending mold 12 and is pressed against the contact surface by the blower air flow 33 14 of the first bending tool 1 1 pressed.
- the contact surface 14 is lowered so far that the disk 5 can be pressed against the contact surface 14 by the blower air flow 33.
- a determination of the disc 5 takes place at the contact surface 14 by suction by means of the suction device 20.
- the suction device air flow 34 generating a negative pressure at the contact surface 14 is also symbolically represented by arrows. Due to the typically incomplete investment against the contact surface 14 takes place only As a rule, the pressing pressure is not sufficient by the Blas Rheins Kunststoffstrom 33 to produce a Randendbiegung in the edge region 17 of the disc 5.
- the suction effect of the suction device 20 essentially only serves to hold the pane 5 against the contact surface 14 until the pressing frame 25 has moved under the pane 5, and has only a slight influence on the bending of the pane 5 the disc 5 are removed. In the inner region 18 of the disk 5, only one surface pre-bending is possible anyway by the contact surface 14.
- FIG. 2 shows a situation in which the disk 5 is already fixed to the contact surface 14.
- the second bending mold 12 ' has been brought from the elevated position to a lowered position in which there is a flat contact between the contact surface 14' and the disc 5 deposited on the pressing frame 25.
- the disc 5 is pressed in the edge region 17 between the outer surface portion 15 'of the contact surface 14' of the bending tool 1 1 'and the pressing surface 28 of the pressing frame 25 (see Figures 8A and 8B).
- the pressing surface 28 has a complementary shape to the outer surface portion 15 'of the contact surface 14.
- the edge region 17 of the disc 5 is thereby preferably finished bending, ie receives its Randendbiegung. However, it is also possible that the edge region 17 of the disc 5 is merely pre-bent.
- the disk 5 is fixed to the contact surface 14 'by suction by means of the suction device 20'.
- the contact surface 14 ' alternatively has a small distance from the disc 5, when suction of the disc 5 over a certain distance away is possible.
- the suction device air flow 34 ' which generates a negative pressure at the contact surface 14', is represented symbolically by arrows.
- the suction of the disc 5 against the contact surface 14 ' also serve to bend the disc 5, ie by the suction sufficient mechanical pressure is generated to bend the disc 5 in the desired manner.
- FIG. 3 shows the device 1 for bending disks 5 at a later point in time than in FIG. 2.
- the first bending mold 12 is again moved upwards to its raised position, the disk 5 being fixed to the contact surface 14 by the suction air flow 34.
- the second bending mold 12 ' is also moved upwards in its raised position, wherein the disk 5 is fixed to the contact surface 14' by the suction air flow 34 '.
- the pressing frame 25 is disc-free and is located below the second bending mold 12 '.
- the biasing frame 30 is still in the biasing means 4 between the two biasing boxes 29.
- Figure 4 shows the apparatus 1 for bending discs 5 at a later time than in Figure 3.
- the first bending mold 12 is shown in a situation in which it the way to a second lowered position above the first lowered position is moved down.
- the disc 5 is still fixed to the contact surface 14 by the Saugeignchtungsluftstrom 34.
- the pressing frame 25 is moved by means of the carrier movement mechanism 26 on the carrier 27 in the horizontal direction (negative x-direction) translationally from the second press frame position 24 to the first press frame position 23 and is located below the first bending mold 12.
- the second bending mold 12 ' is still in its elevated position, the disc being fixed to the contact surface 14 'by the suction air flow 34'.
- the biasing frame 30 is moved from the biasing position 32 to the second press frame position 24 of the second bending station 9 'and is located below the second bending mold 12'.
- FIG. 5 shows the device 1 for bending disks 5 at a later point in time than in FIG. 4.
- the first bending mold 12 has now been moved into the second lowered position, with the disk 5 coming into contact with the pressing frame 25.
- the disc 5 is pressed in the edge region 17 between the outer surface portion 15 of the contact surface 14 of the bending tool 1 1 and the pressing surface 28 of the pressing frame 25 (see Figures 8A and 8B).
- the pressing surface 28 has a complementary shape to the outer surface portion 15 of the contact surface 14.
- the edge portion 17 of the disc 5 is thereby pre-bent or finished bent.
- a great advantage of the pressure of the disc 5 against the pressing frame 25 is a very precise definition of the position of the disc 5 on the pressing frame 5 with an exact contact of the edge portion 17 of the disc 5 on the pressing surface 28 of the pressing frame 25. This allows a precise position fixation of the disc 5 on the press frame 25 through the disc 5 fitting stopper, which is not shown in detail. As a result, a particularly high production accuracy and good optical quality of the bent disc can be achieved.
- the second bending mold 12 ' is moved to its lowered position, wherein the disc 5 is deposited on the biasing frame 30.
- FIG. 6 shows the device 1 for bending disks 5 at a later time than in FIG. 5.
- the first bending mold 12 and the second bending mold 12 ' have each been moved back into their raised position.
- the pressing frame 25 is translationally moved in the horizontal direction (positive x-direction) from the first press frame position 23 to the second press frame position 24 and is located below the second bending mold 12 '.
- the disk 5 located on the pressing frame 25 is pre-bent in the inner region 18 by gravity. Due to the compression in the edge region 17, the surface pre-bending is restricted by gravity in the inner region 18.
- the biasing frame 30 with the disc 5 deposited thereon has been moved from the second press frame position 24 of the second bending station 9 'in the biasing position 32 and is located between the two biasing boxes 29. In order to allow exit from the bending zone 2, the door 35 for open a short period of time. As a result, a significant temperature loss in the bending zone 2 can be avoided.
- the biasing frame 30 has for this purpose an upwardly directed frame surface 36 for contact with the disc 5, which is adapted for a Randendbiegung.
- the biasing frame 30 is suitably adapted for a surface end bending by gravity.
- FIG. 7 shows the device 1 for bending disks 5 at a later time than in FIG. 6.
- the first bending mold 12 and the second bending mold 12 ' are furthermore in an elevated position.
- a new disc 5 was spent.
- the disk 5 located on the press frame 25 can be pressed and sucked by the second bending mold 12 '.
- the disk 5 located in the biasing zone 32 is cooled by a stream of air for biasing, as illustrated by arrows.
- the situation of Figure 7 is thus similar to the situation of Figure 1.
- the bending process can be continued in this way continuously.
- FIGS. 8A and 8B the pressing of the disc 5 between the pressing frame 25 and the contact surface 14 of the first bending tool 11 is shown.
- the contact surface 14 has an outer surface portion 15 and an inner surface portion 16 with different surface contours.
- the outer surface portion 15 has a surface contour, which corresponds to the desired edge end bend in the edge region 17 of the disc 5 or such allows.
- the inner surface portion 16 has a surface contour, which corresponds to a surface pre-bending in the inner region 18 of the disk 5 or such allows.
- the pressing surface 28 of the pressing frame 25 has a surface contour which is complementary to the surface contour of the outer surface portion 15 of the contact surface 14.
- FIG. 8A shows a situation in which the inner region 18 of the disk 5 comes into abutment against the inner surface section 16 (initial contact). This can already be understood as pressing.
- FIG. 8B the pane 5 has also come to lie completely against the outer surface section 15 of the contact surface 14 in the edge region 17, the desired edge end bending being produced in the edge region 17.
- FIG. 9 illustrates the successive steps of the method for producing the disk 5 on the basis of a flowchart.
- a heated to bending temperature disc 5 is provided in a first step I.
- the disc 5 is fixed against the contact surface 14 of the first bending mold 12, wherein the contact surface has an outer surface portion 15, which corresponds to a Randendbiegung in edge region 17 of the disc 5, and an inner surface portion 16, a mecanicnvorbiegung in the inner region 18th corresponds to the disc 5, has up, wherein optionally a Randvorbiegung in the edge region 17 and optionally a legislativenvorbiegung takes place in the inner region 18 of the disc 5.
- a third step III the disc 5 is pressed in the edge region 17 against the pressing surface 28 of the pressing frame 25, wherein the pressing surface 28 is complementary to the outer surface portion 15 of the contact surface 14, wherein a (further) Randvorbiegung or a Randendbiegung in the edge region 17 of the glass pane fifth he follows.
- a fourth step IV the disc 5 is transported on the press frame 25 to the second bending mold 12 ', wherein in particular during transport, a (further) mecanicnvorbiegung takes place in the inner region 18 of the disc 5 by gravity.
- a fifth step V the disk 5 is pressed against the contact surface 14 'of the second bending mold 12' and then fixed to the contact surface 14 ', wherein (if not already done) a edge pre-bending or edge end bending in the edge region 17 and responsiblynvorbiegung or proceedingsnendbiegung in Interior 18 of the disc 5 is done.
- a Randvorbiegung in the edge region of the disc 5 and by pressing the disc 5 between the second bending mold 12 'and the pressing frame 25 a Randvorbiegung in the edge region 17th the disc 5, wherein a Randendbiegung occurs during transport on the biasing frame 30.
- a surface pre-bending takes place in the inner region of the disk 5 by gravity.
- an area end flexure takes place in the interior of the disk 5 by gravity. The disc thus receives its final shape only on the leader frame.
- a further edge end bending takes place only in the sense that the already existing Randendbiegung is not lost, ie the marginal bend is maintained.
- a surface pre-bending takes place in the inner region of the disk 5 by gravity.
- a surface end bend takes place in the inner region of the disk 5 by gravity.
- the disc 5 thus receives in the edge region 17 already by the second bending mold 12 'their final shape. In the interior, the disc 5 is only on the biasing frame 30 its final shape.
- a Randendbiegung in the edge region 17 of the disc 5 is carried out by pressing the disc 5 between the first bending mold 12 and the Press frame 25 a Randendbiegung in the edge region 17 of the disc 5.
- a surface pre-bending takes place in the inner region of the disk 5 by gravity.
- a surface end bend in the interior of the disc 5 by gravity takes place. The disc 5 thus receives in the edge region 17 already by the first bending mold 12 its final shape. In the interior, the disc 5 is only on the biasing frame 30 its final shape.
- edge pre-bending and / or surface pre-bending can take place by fixing the pane 5 to the first bending mold 12 or second bending mold 12 '.
- edge pre-bending and / or surface pre-bending can take place by fixing the disc 5 to the second bending mold 12 'a ceremoninendbiegung.
- the invention provides a method and a compact apparatus for the production of wafers, by means of which a simple and cost-effective production of wafers with short cycle times is made possible.
- this can increase the throughput in the case of complex glass designs.
- the transport time can be used on the press frame between the two bending molds for gravity bending in the interior of the area.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17183930 | 2017-07-31 | ||
PCT/EP2018/066747 WO2019025079A1 (de) | 2017-07-31 | 2018-06-22 | Verfahren und vorrichtung zum biegen von scheiben |
Publications (1)
Publication Number | Publication Date |
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EP3661881A1 true EP3661881A1 (de) | 2020-06-10 |
Family
ID=59501307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18732355.5A Withdrawn EP3661881A1 (de) | 2017-07-31 | 2018-06-22 | Verfahren und vorrichtung zum biegen von scheiben |
Country Status (13)
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US (1) | US20210179473A1 (de) |
EP (1) | EP3661881A1 (de) |
JP (1) | JP6864154B2 (de) |
KR (1) | KR102359351B1 (de) |
CN (1) | CN109601000B (de) |
BR (1) | BR112020001797A2 (de) |
CA (1) | CA3071360A1 (de) |
CO (1) | CO2020001036A2 (de) |
DE (1) | DE202018006729U1 (de) |
MA (1) | MA49736A (de) |
MX (1) | MX2020001182A (de) |
RU (1) | RU2731248C1 (de) |
WO (1) | WO2019025079A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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FI20185664A1 (fi) * | 2018-07-31 | 2020-02-01 | Taifin Glass Machinery Oy | Menetelmä laitteessa lasilevyjen taivuttamiseksi ja laite lasilevyjen taivuttamiseksi |
CN113557217A (zh) * | 2020-02-19 | 2021-10-26 | 法国圣戈班玻璃厂 | 用于压弯玻璃片材的装置和方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4575390A (en) * | 1984-11-23 | 1986-03-11 | Glasstech, Inc. | Apparatus for forming glass sheets |
FR2601668A1 (fr) | 1986-07-16 | 1988-01-22 | Saint Gobain Vitrage | Perfectionnement au bombage de plaques de verre |
FR2606399B1 (fr) * | 1986-11-06 | 1989-01-13 | Saint Gobain Vitrage | Procede et installation de bombage de plaques de verre, a capacite elevee |
US4897102A (en) * | 1989-03-14 | 1990-01-30 | Libbey-Owens-Ford Co. | Glass sheet press bending mold |
DE4203751C2 (de) * | 1992-02-10 | 1993-11-18 | Ver Glaswerke Gmbh | Vorrichtung zum Biegen von Glasscheiben |
US5906668A (en) | 1997-11-20 | 1999-05-25 | Glasstech, Inc. | Mold assembly for forming heated glass sheets |
FR2852951B1 (fr) | 2003-03-26 | 2007-02-16 | Saint Gobain | Procede de bombage de feuilles de verre par pressage et aspiration |
JP2005206458A (ja) | 2003-12-26 | 2005-08-04 | Asahi Glass Co Ltd | ガラス板の曲げ成形方法及びその装置 |
EP1550639A1 (de) * | 2003-12-26 | 2005-07-06 | Asahi Glass Company, Limited | Verfahren und Vorrichtung zum Biegen von Glasscheiben |
FR2880343B1 (fr) | 2004-12-31 | 2007-06-22 | Saint Gobain | Procede de bombage de feuilles de verre par aspiration |
WO2007125973A1 (ja) * | 2006-04-25 | 2007-11-08 | Asahi Glass Company, Limited | ガラス板の曲げ成形方法及びガラス板の曲げ成形装置 |
EP2128099B1 (de) * | 2006-12-19 | 2012-08-29 | Asahi Glass Company, Limited | Verfahren und vorrichtung zum formen einer gekrümmten glasplatte |
EP2233444B1 (de) * | 2007-12-04 | 2013-02-20 | Asahi Glass Company, Limited | Verfahren und gerät zum biegen und formen von glasscheiben |
EP2463247A1 (de) | 2010-12-13 | 2012-06-13 | Saint-Gobain Glass France | Verfahren und Vorrichtung zum Biegen von Scheiben |
US9206067B2 (en) * | 2013-03-12 | 2015-12-08 | Glasstech, Inc. | Glass sheet support structure |
US20150218030A1 (en) * | 2014-02-06 | 2015-08-06 | Glasstech, Inc. | Forming station and method for forming a hot glass sheet with transverse curvature |
ES2713033T3 (es) * | 2014-10-28 | 2019-05-17 | Saint Gobain | Herramienta de curvado para hojas de vidrio |
US11021387B2 (en) * | 2014-12-10 | 2021-06-01 | AGC Inc. | Manufacturing method for laminated glass |
FR3037946A1 (fr) * | 2015-06-25 | 2016-12-30 | Saint Gobain | Dispositif de detection de la position de feuilles de verre |
-
2018
- 2018-06-22 CN CN201880002251.XA patent/CN109601000B/zh not_active Expired - Fee Related
- 2018-06-22 KR KR1020207004047A patent/KR102359351B1/ko active IP Right Grant
- 2018-06-22 WO PCT/EP2018/066747 patent/WO2019025079A1/de active Application Filing
- 2018-06-22 RU RU2020108475A patent/RU2731248C1/ru active
- 2018-06-22 JP JP2020505147A patent/JP6864154B2/ja active Active
- 2018-06-22 EP EP18732355.5A patent/EP3661881A1/de not_active Withdrawn
- 2018-06-22 CA CA3071360A patent/CA3071360A1/en not_active Abandoned
- 2018-06-22 DE DE202018006729.6U patent/DE202018006729U1/de active Active
- 2018-06-22 MA MA049736A patent/MA49736A/fr unknown
- 2018-06-22 MX MX2020001182A patent/MX2020001182A/es unknown
- 2018-06-22 US US16/635,087 patent/US20210179473A1/en not_active Abandoned
- 2018-06-22 BR BR112020001797-3A patent/BR112020001797A2/pt not_active Application Discontinuation
-
2020
- 2020-01-29 CO CONC2020/0001036A patent/CO2020001036A2/es unknown
Also Published As
Publication number | Publication date |
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BR112020001797A2 (pt) | 2020-07-21 |
KR20200029001A (ko) | 2020-03-17 |
RU2731248C1 (ru) | 2020-08-31 |
CO2020001036A2 (es) | 2020-02-18 |
CA3071360A1 (en) | 2019-02-07 |
DE202018006729U1 (de) | 2022-06-01 |
CN109601000A (zh) | 2019-04-09 |
MA49736A (fr) | 2020-06-10 |
CN109601000B (zh) | 2022-03-15 |
US20210179473A1 (en) | 2021-06-17 |
JP2020529381A (ja) | 2020-10-08 |
MX2020001182A (es) | 2020-03-12 |
JP6864154B2 (ja) | 2021-04-28 |
WO2019025079A1 (de) | 2019-02-07 |
KR102359351B1 (ko) | 2022-02-09 |
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