• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The breaking process comprises: - a tracing step on the surface of the glass by means of a cutting tool, a cutting line delimiting the outer contour of said inner shape and the inner contour of a peripheral shape; contacting the peripheral shape of the glass sheet with a support means along the outer contour of the inner shape; the use of a deformation means for deforming one of the inner shape and the peripheral shape in convex flexion towards the side opposite to the cutting line. The differential deformation between the inner shape and the peripheral shape is sufficient to break the inner shape along the cutting line and create the distance necessary for the non-contact extraction of the inner shape from the peripheral shape. The extraction is carried out with a convex bending retention.
    公开号:FR3031102A1
    申请号:FR1463467
    申请日:2014-12-31
    公开日:2016-07-01
    发明作者:Thierry Dumenil
    申请人:Saint Gobain Glass France SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the field of breaking an internal shape in a glass sheet, for example to form a sunroof in a motor vehicle glazing forming roof or for example still a pivoted glazed opening inside a side window of a motor vehicle, as on some sliding doors. A first known technique is to cut the inner shape by means of a jet of water (Figure 1). The water jet makes a cut by removal of material between the inner shape and the main shape, which allows easy separation (Figure 1a). Nevertheless, the inner shape can not be reused because to be of good quality, the cut must start inside the inner shape (figure 1).
    [0002] The inner shape must be cut from another sheet of glass (Figure 1b) in which the edges have been broken, before assembling the two complementary shapes (Figure 1c). A disadvantage of this method is that the inner shape must be destroyed. In addition, the water jet cutting process is slow.
    [0003] Another faster process is to use a cut with rom page. Two operations follow one another: - A preliminary operation of tracing one or more surface cracks on the surface of the glass using, for example, a glass wheel or a laser; these cracks form lines at the contours of the form; this operation is called the "cut" operation; an operation for propagating the initial surface crack through the thickness of the glass sheet; this operation is called the "break" operation and allows to separate the shape that we want to cut from the original glass sample, called primitive. Figures 2 and 2a illustrate the cutting by tracing and support on the sacrificial central portion for breaking. Additional cutting lines (Figure 2) are then preferably provided to facilitate the breaking of the different pieces of the central portion.
    [0004] 3031102 2 But this technique also has the disadvantage of destroying the inner form. We must cut and shape an inner shape (Figure 2b) from another sheet of glass, and finally assemble the two complementary shapes (Figure 1c).
    [0005] An object of the invention is to facilitate the cutting of an inner shape into a glass sheet. For this purpose, an object of the invention is a method of breaking an inner shape into a glass sheet for forming a glazing unit, comprising: a tracing step on the surface of the glass by means of a tool cutting, a cutting line defining the outer contour of said inner shape and the inner contour of a peripheral shape; contacting the peripheral shape of the glass sheet with a support means along the outer contour of the inner shape; the use of a deformation means for deforming one of the inner shape and the peripheral shape in convex flexion towards the side opposite to the cutting line, the differential deformation between the inner shape and the peripheral shape being sufficient to 20 breaking the inner shape along the cutting line and create the distance necessary for the extraction without contact of the inner shape with respect to the peripheral shape, the extraction being carried out with a convex bending retention. This method makes it possible to preserve the inner shape and to use it as an opening of complementary shape to the window made in the glass sheet. This reduces the manufacturing cost. In addition, the process is fast. This breaking technique also has the advantage of being integrated on an existing line.
    [0006] According to particular embodiments, the method furthermore has one or more of the following characteristics, taken alone or in any technically possible combination: the method uses a means of maintaining the effect of the deformation means in the other of the inner form and the peripheral form; the support means extends over the entire external contour of the inner shape, inside, facing or outside the cutting line; the support means comprises two support members, preferably one around the other; the support means comprises at least one seal for forming at least one zone of low pressure facing at least one of the inner shape and the outer shape; - A low pressure zone is a convex bending deformation zone of said one of the inner shape and the peripheral shape, the deformation means being a suction means; A zone of low pressure is a holding zone countering the deformation of the other of the inner shape and the peripheral shape, the holding means being a suction means; the support means is adapted to serve as support for said other of the inner shape and the peripheral shape during the breaking of the inner shape; the deformation means comprises a convex counterform adapted to press said one of the inner shape and the peripheral shape in convex flexion; The invention also relates to a machine for breaking an inner shape in a glass sheet intended to form a glazing unit, comprising: a cutting tool and means for automatically moving said tool to make a cutting line defining the outer contour of said inner shape and the inner contour of a peripheral shape; A support means for pressing the glass sheet along the outer contour of the inner shape; and deforming means for deforming one of the inner shape and the peripheral shape in convex flexion towards the side opposite to the cutting line, and effecting the extraction of the inner shape with respect to the peripheral shape with convex bending retention of said one of the inner shape and the peripheral shape, with the deformation means and / or other convex bending retention means. The invention will be better understood on reading the description which will follow, to be made solely by way of nonlimiting example, with reference to the following figures: FIGS. 1 to 1c are diagrammatic views from above of a method manufacturing using waterjet cutting, according to the prior art; FIGS. 2 to 2c are views similar to FIG. 1 illustrating another technique for extracting an inner shape according to the prior art, by cutting and breaking; Figures 3 to 5 are diagrammatic views in vertical section of different steps of a method according to a particular embodiment of the invention; Figures 6 - 6c, 7c - 7c, 8c - 8c are also schematic vertical sectional views of the steps performed in three different breaking processes of a first embodiment and Figures 9-9c. analogous figures an example of a second embodiment. Figures 3 to 5 schematically illustrate a method according to a particular embodiment of the invention, consisting first of all in a step of drawing a line 2 (or "line") of cutting (Figure 3); that is, creating a crack on a first face 4A of the glass sheet 4, followed by a rom-page step by convexly bending the inner shape. It should be noted that throughout the text, "inner shape" means a shape whose contour is a closed line and inside with respect to the peripheral contour of the glass sheet. It should also be noted that the sheet of glass to be cut is typically a "primitive". In order to produce a primitive, the first step is to cut into PLF or DLF sheets of glass of rectangular or trapezoidal shape, which are called "primitive". These are sheets of glass whose shape is a convex polygon containing the final glazing to be made while leaving all around a "trim" sufficient to proceed to the eventual breaking of the edges. Alternatively, it is a glass sheet ready to shape, i.e. whose shape corresponds substantially to the final shape of the glazing. However, it is generally a glass sheet of any suitable type, even if it is preferably a flat glass sheet. Also note that the PLF and DLF are the glass sheets obtained on the production line of a float glass ribbon.
    [0007] The tracing of the cutting line is for example carried out by means of a glass wheel 8 or any other suitable cutting instrument, such as for example a laser. The cutting line 2 is a crack intended to allow the breaking along this line during the breaking step. It is therefore a partial cut, i.e. only on a part of the thickness of the glass sheet. This is what is meant by "cut line" throughout the text. Figures 4 and 5 illustrate the principle of the invention, namely to break the glass sheet along the cutting line 4 by convexly bending the inner shape 6 (or alternatively the peripheral shape 10 as shown in the figures 9 - 9quater and explained below). This convex bending is performed toward the opposite side to the cutout side 4, i.e. downward in the figures. The peripheral shape 0 is in turn maintained in its initial state, its bending deformation being prevented (or only limited) by a suitable holding means, such as a suction means, associated with a bearing means 25 carrying the peripheral form, as explained in more detail below. The differential bending of the inner shape 6 with respect to the outer shape 10, simultaneously over the entire contour of the inner shape, provides the breaking and allows the edges of the inner shape of the inner contour to be moved away from the shape. peripheral, which facilitates the extraction of the inner form. The extraction of the inner shape 6 is for example carried out in a direction opposite to that of the bending, as illustrated in FIG. 5 in which the extraction is carried out upwards. It is alternatively an extraction of any suitable type, insofar as the flexural form is maintained in flexion during extraction. Figures 6 - 6c, 7c - 7c, 8c - 8c illustrate more precisely three embodiments of the invention, provided by way of example, and according to a first embodiment in which the inner form 6 is flexed. According to a second embodiment which will be explained with reference to FIGS. 9-9quater, it is the peripheral form 10 which is bending. In the example of FIGS. 6-6, as in all other examples of FIGS. 7-9, a cutting line is drawn along the contour of the inner shape on a first cutting station. The glass sheet is arranged for this purpose on a felt-type carpet or any other suitable type. The glass sheet is then transferred by any suitable means to a breaking station, more particularly to a support table 12 forming a support means for the glass sheet. In the three examples of Figures 6-8quater, the table is provided with seals 14, 16 of sealing support arranged around each other. A first seal 14 is intended to be, after placement of the glass sheet, along and around the cutting line, outside with respect to the cutting line. The outer seal 16 is provided along and inside the outer contour of the peripheral shape 10. Alternatively, however, particularly as illustrated by the example of Figures 9-9quater, the inner seal 14 is provided opposite the cutting line 2 and thick enough to be in sealing contact with the inner shape 6 and the peripheral shape 10. This is a variant also applicable to the examples of Figures 6-8ter. The inner seal 14 creates a low pressure zone (P- -) between the peripheral shape 10 and the support table 12, thereby acting as a convex bending means (see Fig. 6b). A suction device is for example integrated in the support table for this purpose (not shown). With the additional present of the outer seal 16, a partial vacuum (P-) can be created in the zone opposite the peripheral shape 10, so as to maintain the peripheral shape flat, ie to form a holding means countering the bending deformation by the deformation means applied to the inner shape 6. A suction device (not shown) is also integrated into the support table 12 for this purpose.
    [0008] The outer seal is, however, optional in the event that the maintenance of the peripheral shape 10 is carried out mechanically, for example by applying a flat counter-shape to the peripheral shape (variant not shown). It should also be noted that, in a variant not shown, there is not provided a flat holding means against the convex bending deformation, in particular assuming that the peripheral shape is of a large size and the effect from the gravity on the peripheral shape (or the effect of gravity on the inner shape in the second embodiment) sufficient to obtain the desired differential deformation between the inner shape 6 and the peripheral shape 10. In FIG. , the inner shape 6 is held in bending without moving while the peripheral shape 10 is removed, for example by a suction table or other means of any type adapted as a mechanical means.
    [0009] In the second example of Figures 7 to 7c, the break is performed in the same manner as in the first example of Figures 6-6quater, but the extraction is performed by removing the inner form 6 by means of a table. aspirant adapted to maintain the inner shape 6 in flexion during extraction. It is thus conceivable that the convex bending deformation means 25 is not necessarily the same as the convex bending retention means during the extraction. In this specific case, the convex bending deformation means for breaking is formed by the support joints 14, 16 and an associated suction device while the convex bending retention means is formed by a suction table provided on the side. opposite of the glass sheet 30, and preferably having a convex counter-form 18 corresponding to the inner shape in convex flexion. Keeping the flat peripheral shape flat is always done by suction.
    [0010] In the third example of FIGS. 8 to 8c, the bending is carried out not by suction but by mechanical support of a specific counterform 18. The counterform 18 has a shape corresponding to the convex shape desired for breaking, ie a convex form adapted.
    [0011] The extraction is then carried out by suction of the inner shape on the convex counter-form 18 which served for breaking, thus forming a means of maintaining flexion. In the second embodiment illustrated by FIGS. 9-9quater, the inner shape is held flat while the peripheral shape is deformed in convex flexion towards the side opposite the cutting line 2. In this example, the deforming means for breaking is a suction means, the support table 12 forming between the two seals 14, 16 a zone of low pressure sufficient to deform the peripheral shape 10. The inner shape 6 is in turn subject to a low pressure zone Sufficient to maintain it against bending deformation. Extraction of the inner shape is carried out for example by a suction table, while the peripheral shape 10 is held in convex flexion by suction. Note that alternatively, in both embodiments, bending could be upward, for example if the glass sheet was held in the air by suction. In this case, the cutting line 2 would be on the side under the glass sheet. The machine illustrated diagrammatically in FIGS. 6 to 9c has at least one computer and a memory on which machine control programs are stored. The programs are able to control the machines of Figures 6 to 9c, more particularly to control the cutting tool 6, the flexural deformation means, flattening and extraction.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. A method of breaking an inner shape into a glass sheet for forming a glazing, comprising: - a step of tracing on the surface of the glass by means of a cutting tool, a cutting line delimiting the outer contour said inner shape and the inner contour of a peripheral shape; contacting the peripheral shape of the glass sheet with a support means along the outer contour of the inner shape; the use of a deformation means for deforming one of the inner shape and the peripheral shape in convex flexion towards the side opposite to the cutting line, the differential deformation between the inner shape and the peripheral shape being sufficient to breaking the inner shape along the cutting line and creating the distance necessary for the extraction without contact of the inner shape with respect to the peripheral shape, the extraction being carried out with a convex bending retention.
    [0002]
    2. Method according to claim 1, using a holding means counteracting the effect of the deformation means in the other of the inner shape and the peripheral shape.
    [0003]
    3. Method according to claim 1 or 2, wherein the support means extends over the entire outer contour of the inner shape, inside, facing or outside relative to the cutting line.
    [0004]
    4. Method according to any one of the preceding claims, wherein the support means comprises two support members, preferably one around the other.
    [0005]
    5. A method according to any one of the preceding claims, wherein the support means comprises at least one seal for forming at least one zone of low pressure with respect to at least one of the inner shape and the shape. exterior.
    [0006]
    6. Method according to the preceding claim, wherein a low pressure zone is a convex bending deformation zone of said one of the inner shape and the peripheral shape, the deformation means being a suction means. 3031102 10
    [0007]
    7. The method of claim 4 or 5, taken together with claim 2, wherein a low pressure zone is a holding zone countering the deformation of said other of the inner shape and the peripheral shape, the holding means being suction means. 5
    [0008]
    8. A method according to any one of the preceding claims, wherein the support means is adapted to support said other of the inner shape and the peripheral shape during the breaking of the inner shape.
    [0009]
    9. A method according to any one of the preceding claims, wherein the deforming means comprises a convex counterform adapted to press said one of the inner shape and the peripheral shape into convex flexion.
    [0010]
    10. Machine for breaking an inner shape in a glass sheet intended to form a glazing unit, comprising: - a cutting tool and means for automatically moving said tool to make a cutting line delimiting the outer contour of said shape inner and inner contour of a peripheral shape; - A support means for pressing the glass sheet along the outer contour of the inner shape; and a deformation means for deforming one of the inner shape and the peripheral shape into convex flexion towards the side opposite the cutting line, and effecting the extraction of the inner shape with respect to the peripheral shape with a maintaining in convex flexion of said one of the inner shape and the peripheral shape, with the deforming means and / or another means of convex bending retention.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3240763B1|2018-09-26|Method for breaking an inner shape out of a glass sheet and associated apparatus
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    EP0028988A1|1981-05-20|Process and device for separating the edges from a glass sheet bearing a closed-contour cutting line
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    FR2734259A1|1996-11-22|SHEET GLAZING AND METHOD FOR MANUFACTURING SUCH GLAZING
    FR2932402A1|2009-12-18|Industrial decorative stencil for painting e.g. logo on cockpit of airplane, has blank partially subsisting linkages between edges of blank, where blank has cross-section having height lower than thickness of sheet
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    EP1700683B1|2009-12-09|Mold and interior lining part of a motor vehicle
    EP0743146A1|1996-11-20|Method and equipment for producing a covering material with decorative cuts
    FR2627129A1|1989-08-18|Method for assembling two panels made from corrugated cardboard | of the same thickness
    同族专利:
    公开号 | 公开日
    MX2017008638A|2017-10-11|
    FR3031102B1|2017-01-27|
    JP6621828B2|2019-12-18|
    CA2970727A1|2016-07-07|
    JP2018505838A|2018-03-01|
    EP3240763B1|2018-09-26|
    US20170355634A1|2017-12-14|
    EP3240763A1|2017-11-08|
    EA201791492A1|2018-03-30|
    CN106414351A|2017-02-15|
    BR112017011929B1|2021-08-17|
    CN106414351B|2019-01-22|
    US20200079677A1|2020-03-12|
    PL3240763T3|2019-02-28|
    ES2703685T3|2019-03-12|
    WO2016108007A1|2016-07-07|
    US10934204B2|2021-03-02|
    EA033211B1|2019-09-30|
    US10519059B2|2019-12-31|
    PT3240763T|2018-12-17|
    BR112017011929A2|2018-01-16|
    KR20170101960A|2017-09-06|
    引用文献:
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    JP6923284B2|2016-09-30|2021-08-18|コーニング インコーポレイテッド|Equipment and methods for laser machining transparent workpieces using non-axisymmetric beam spots|
    CN106542727B|2016-10-10|2019-03-05|华南理工大学|A kind of goggle with curve surface lens embrittlement forming method that micro- grinding tip precisely induces|
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    法律状态:
    2015-12-15| PLFP| Fee payment|Year of fee payment: 2 |
    2016-07-01| PLSC| Search report ready|Effective date: 20160701 |
    2016-12-16| PLFP| Fee payment|Year of fee payment: 3 |
    2017-12-21| PLFP| Fee payment|Year of fee payment: 4 |
    2019-12-13| PLFP| Fee payment|Year of fee payment: 6 |
    2021-09-10| ST| Notification of lapse|Effective date: 20210806 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1463467A|FR3031102B1|2014-12-31|2014-12-31|PROCESS FOR RIPPING AN INNER SHAPE IN A GLASS SHEET|FR1463467A| FR3031102B1|2014-12-31|2014-12-31|PROCESS FOR RIPPING AN INNER SHAPE IN A GLASS SHEET|
    PL15830821T| PL3240763T3|2014-12-31|2015-12-21|Method for breaking an inner shape out of a glass sheet and associated apparatus|
    KR1020177020986A| KR20170101960A|2014-12-31|2015-12-21|Method of cutting inner shape from glass sheet|
    JP2017535049A| JP6621828B2|2014-12-31|2015-12-21|Method for cutting out the inner shape of a glass plate|
    CN201580002448.XA| CN106414351B|2014-12-31|2015-12-21|For being punched the technique of interior shape in sheet glass|
    EP15830821.3A| EP3240763B1|2014-12-31|2015-12-21|Method for breaking an inner shape out of a glass sheet and associated apparatus|
    CA2970727A| CA2970727A1|2014-12-31|2015-12-21|Method for breaking an inner shape out of a glass sheet|
    ES15830821T| ES2703685T3|2014-12-31|2015-12-21|Cutting procedure of an interior shape on a glass sheet and an associated device|
    BR112017011929-3A| BR112017011929B1|2014-12-31|2015-12-21|BREAKING PROCESS OF AN INTERIOR FORM ON A GLASS SHEET|
    MX2017008638A| MX2017008638A|2014-12-31|2015-12-21|Method for breaking an inner shape out of a glass sheet.|
    PCT/FR2015/053686| WO2016108007A1|2014-12-31|2015-12-21|Method for breaking an inner shape out of a glass sheet|
    PT15830821T| PT3240763T|2014-12-31|2015-12-21|Method for breaking an inner shape out of a glass sheet and associated apparatus|
    US15/540,832| US10519059B2|2014-12-31|2015-12-21|Process for breaking out an inner shape in a glass sheet|
    EA201791492A| EA033211B1|2014-12-31|2015-12-21|Process for breaking out an inner shape in a glass sheet|
    US16/688,143| US10934204B2|2014-12-31|2019-11-19|Process for breaking out an inner shape in a glass sheet|
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