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WO2018002502A1 - Method for moulding a flush profiled bead on a glazing member and moulding device for said method - Google Patents

Method for moulding a flush profiled bead on a glazing member and moulding device for said method Download PDF

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Publication number
WO2018002502A1
WO2018002502A1 PCT/FR2017/051697 FR2017051697W WO2018002502A1 WO 2018002502 A1 WO2018002502 A1 WO 2018002502A1 FR 2017051697 W FR2017051697 W FR 2017051697W WO 2018002502 A1 WO2018002502 A1 WO 2018002502A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
values
seal
integrating
molding
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.)
Ceased
Application number
PCT/FR2017/051697
Other languages
French (fr)
Inventor
Alexandre HENNION
Nicolas COUTELLIER-LECLERC
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Priority to CN201780002051.XA priority Critical patent/CN108698273A/en
Publication of WO2018002502A1 publication Critical patent/WO2018002502A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14434—Coating brittle material, e.g. glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14418—Sealing means between mould and article

Definitions

  • the present invention relates to the field of overmolding parts for the production of glazing.
  • the present invention relates more particularly to the production of a profiled bead on the edge of a window by overmolding to form a glazing unit and in particular a vehicle glazing.
  • It relates more particularly to a method and a device for molding a profiled bead at the edge of a window, in which a constituent plastic material of said profiled bead is introduced by injection into a molding cavity, said molding cavity being delimited in part by said pane and for other part by walls of a mold having at least one fixed mold part and a movable mold part which is movable with respect to the fixed mold part, said mold parts cooperating in the closed state mold with said pane to form said molding cavity, said molding cavity having a contact between a mold portion and an edge of said pane and a mold portion having at least one seal located near said contact and outside said molding cavity, said seal having, in cross section, a total width and a total thickness.
  • Figure 1 attached illustrates such a method and device of the prior art, with a seal 4 'located outside a mold cavity 2 and having a trunk 40 positioned in a groove 34 formed in a mold portion 30 .
  • a seal trunk has one or more grooves near the glass; however, a joint trunk is always in the vertical continuity of the groove that receives it.
  • FIGS. 9 and 10 of International Patent Application No. WO 98/05487 a method and a device with a molding cavity which is delimited in part by said window and partly by walls. of a mold but in this document a seal is in contact, at least by an edge, with this mold cavity.
  • This method and this device have the particular drawback of requiring very often a manual finishing by an operator, because the skin of the profiled bead then often has defects in the area. corresponding to the presence of the seal in the molding cavity, which increases the cost of manufacture.
  • the object of the invention is to overcome the disadvantages of the prior art by providing a method and a molding device that can mold a profiled bead in a seamless molding cavity, without risk of leakage, while reducing the risk of breakage of panes in mold, particularly for windows having a non-symmetrical shape or a high tolerance bending.
  • Another important object of the invention is thus to make it possible to produce series of glazings in a reliable and inexpensive way, without smudging.
  • the present invention intends to defeat the usual knowledge that recommends a small surface contact between the seal and the glass and intends to provide a high surface contact between the seal and the glass.
  • the present invention thus relates in its broadest sense to a method of molding a profiled bead to the edge of a pane according to claim 1.
  • the dependent claims have advantageous optional features.
  • a plastic material constitutive of said profiled bead is introduced into a molding cavity, said molding cavity being delimited in part by said glass and for other part by walls of a mold comprising minus a fixed mold part and a mold moving part which is movable with respect to the fixed mold part, said mold parts cooperating in the closed state of the mold with said pane to form said molding cavity, said molding cavity comprising a contact between a mold part and an edge of said pane and a mold part comprising at least one seal located close to said contact and outside said molding cavity, said seal having, in cross section, a total width which is in contact with said window when said mold is closed and a total thickness.
  • This method is remarkable in that said seal has, when said mold is open, a width to thickness ratio which is between 1.5 and 25.0 by integrating these values, or even between 2.0 and 25.0 by integrating these values, even between 4.0 and 25.0 by integrating these values.
  • said seal comprises at least one branch which extends laterally on a surface continuity of said mold and which is in contact with both said window and said mold part during the closing of said mold and during the injection of the mold. plastic material in said molding cavity.
  • said seal has in cross section:
  • T A general shape of T with a trunk positioned in a groove in a mold part and two branches each extending laterally on a surface continuity of said mold.
  • a mold surface continuity means that the surface of the mold is flat, for example without groove, or cavity.
  • said pane is in contact with a mold part along an edge of the outer face of the pane which extends from said ridge to said seal and which has a width of between 1.0 and 10. , 0 mm, or even between 2.5 and 8.0 mm.
  • said molding cavity of said profiled bead has no seal.
  • the suction system carries out a suction of a face of the window between two seals during the injection of said plastic into said molding cavity, the two seals each preferably having, when said mold is opened, a width to thickness ratio which is between 1.5 and 25.0 integrating these values, or even between 2.0 and 25.0 integrating these values, or even between 4.0 and 25.0 by integrating these values.
  • these two seals preferably have the same width to thickness ratio in order to facilitate the distribution of the stresses and the management of the suction.
  • the present invention also relates to a device, in particular for implementing the method according to the invention, for molding a profiled bead at the edge of a window, in which a constituent plastic material of said profiled bead is introduced into a molding cavity, said molding cavity being delimited in part by said window and partly by walls of a mold comprising at least one fixed mold part and a moving mold part which is movable with respect to the fixed part mold, said mold portions cooperating in the closed state of the mold with said pane to form said mold cavity, said mold cavity having a contact between a mold portion and an edge of said pane and a mold portion having at least one mold portion; at least one seal located near said contact and outside said molding cavity, said seal having, in cross section, a total width and a total thickness e.
  • the device according to the invention is remarkable in that said seal has, when said mold is open, a width to thickness ratio which is between 1.5 and 25.0 by integrating these values, or even between 2.0 and 25. , 0 by integrating these values, or even between 4.0 and 25.0 by integrating these values.
  • said seal of this device has in cross section:
  • L a general shape of L with a trunk positioned in a groove formed in a mold part and a single branch extending laterally over a surface continuity of said mold
  • T a general shape of T with a trunk positioned in a groove in a mold part and two branches extending laterally each on a surface continuity of said mold.
  • said branch, or said branches when there are two have a height, measured from said surface continuity of said mold, which is between 0.5 and 8.0 mm by integrating these values, and more preferably that is between 1.0 and 6.0 mm by integrating these values, or even between 2.0 and 4.0 by integrating these values.
  • At least one branch comprises at least one boss with a hump point oriented in the direction of said window and said hump point which extends at an angle a preferably of the order of 120 ° more or less 10 °.
  • the device is particularly indicated when a suction system is located in a mold part between two joints of which at least one seal is according to the invention, or both joints are according to the invention.
  • the suction system carries out a suction of a face of the window between two seals during the injection of said plastic into said molding cavity, the two seals each preferably having, when said mold is opened, a width to thickness ratio which is between 1.5 and 25.0 integrating these values, or even between 2.0 and 25.0 integrating these values, or even between 4.0 and 25.0 by integrating these values.
  • the material of the joints can be:
  • the hardness of the material of the joints may be a hardness of between 10 and 90 Shore A, preferably between 20 and 30 Shore A and more preferably 25 Shore A.
  • the method and the device according to the invention make it possible to achieve a simple, reliable and precise adaptation of the contours of the molding cavity to the different variations of curves necessarily observed in a series of identical curved glazings (same general bending, to close the same bay).
  • the invention thus makes it possible to very greatly reduce the rate of breakage of curved panes in a mold, even compared to technologies already known.
  • This breakage rate of molded panes is thus close to zero during the implementation of the method according to the invention.
  • the invention can be implemented for a peripheral profiled bead, that is to say all around the glass.
  • a profiled bead is particularly difficult to achieve.
  • the invention makes it possible to use molds with a single molding cavity for the entire periphery of the window.
  • the plastic material forming the profiled bead does not escape from the cavity. molding and there is no need to perform manual recovery on the profiled cords; the profiled beads always have the desired shape. There is no vent at the joint.
  • FIG. 1 illustrates a schematic and partial sectional view of an exemplary implementation of a method of the prior art and of producing the molding device of the prior art for this process, in a closed mold position, ready for injecting the shaped bead material into the molding cavity;
  • Figures 2 to 4 each illustrate a cross-sectional view of an embodiment of a seal for the method and the device according to the invention.
  • the present invention relates to the manufacture of a profiled bead of a flexible plastic material by molding on the periphery of a window to form a glazing and in particular a vehicle glazing.
  • the constituent plastic material of the profiled bead may be a thermoplastic (PVC, TPE, ...), a polyurethane or a synthetic rubber of the EPDM type or any other suitable material.
  • the profiled bead is generally disposed over the entire periphery of the window, but this profiled bead could quite well be positioned only on a part of the periphery of the glazing or on any part of the glazing.
  • the glazing which consists at least of the window and the profiled bead, as well as possibly accessories and in particular accessories for fixing the glazing or stiffening elements of the glazing, such as plastic or metal inserts, is intended to close a bay making a separation between an interior space and an outside space.
  • the window 1 thus has an inner face 11, intended to be turned towards the inner space, an outer face 12 intended to be turned towards the outer space, and a peripheral edge 13.
  • the pane may be monolithic, that is to say consisting of a sheet of single material, or be composite, that is to say consisting of several sheets of material between which is inserted at least one layer of adherent material in the case of laminated glass, or between which there is at least one intermediate space in the case of multiple glazing (double glazing, triple glazing, ).
  • the sheet (s) of material may (or may) be mineral (s), in particular glass, or organic (s), including plastic.
  • the glazing In the case of a vehicle glazing, the glazing generally has at least partially at its periphery an ornamental strip, not shown here.
  • This strip of ornamentation generally results from an enamel deposit, made on the inner face of the glazing or on an intermediate face of the glazing for the composite glazing, but it can also result from a partial and / or peripheral coloration of the glazing.
  • the profiled bead is manufactured by implementing a manufacturing process called "encapsulation” because it comprises a step of molding the profiled bead in a molding device comprising a mold comprising at least a fixed portion of mold and a moving mold part which is movable relative to the fixed mold part, said mold parts cooperating in the closed state of the mold, during the molding step, with said pane to form a mold cavity having cuts the shape of the profiled bead profile.
  • the molding device further comprises means for opening and closing the mold, as well as means for applying a pressure on the mold during the injection of the material forming the profiled bead in the molding cavity; these means are not illustrated here.
  • the pane 1 in order to manufacture the profiled bead by molding, the pane 1 is positioned in a mold part, here the fixed, lower mold part 30, then an upper moldable moving part 32 is positioned on the mold part. fixed portion 30 of mold, so as to form in the closed space between these two mold parts a molding cavity 2.
  • the edge of the window thus penetrates into the molding cavity 2 in order to be able to mold the profiled bead at the periphery of the pane 1, in contact with an edge 14 of the pane and more precisely here a lower edge with reference to the orientation in figure 1 ; it is a straight edge, substantially 90 °, and not curved / rounded.
  • the molding cavity 2 in which the plastic material constituting the profiled bead is introduced is delimited in part by the pane 1 and in part by walls of the mold 3; this molding cavity 2 has no seal.
  • the movement of opening and closing of the mold 3, that is to say the displacement of the movable portion 32 relative to the fixed part 30 is here a movement in the vertical direction, with reference to the orientation of the Figure 1, but this movement could also be in the horizontal direction or in any other direction, possibly curved.
  • the fixed part 30 is moreover fixed on a frame of a molding device 10.
  • the constituent plastic material of the profiled bead is injected into the mold cavity through at least one injection port (not shown).
  • the window 1 is not flat but curved, there is a problem of adaptation of the windows 1 of the series in the mold 3.
  • the technologies that make it possible to produce a series of curved panes, and particularly the bending technique of mineral glass sheet (s) does not make it possible to guarantee an absolute reproducibility of the curve of one glass pane to another inside a series: it There is always a manufacturing tolerance, which is at best of the order of 2 to 5 tenths of a millimeter, depending on the size of the window.
  • a mold part (here the fixed mold part 30, but it could also be the movable mold part) comprises at least one seal 4 'which is situated outside the molding cavity 2 and is therefore not in contact with the profiled bead during the formation of this profiled bead.
  • This seal 4 ' has a trunk 40 which is positioned in a groove 34 which is formed in the fixed mold portion 30, and which has a lip (not visible in Figure 1 because crushed) protruding from this fixed mold portion relative to the surface of this mold part, that is to say protruding above the groove 34 when the mold is open but also when the mold is closed, to prevent contact between the glass and the mold to this in law.
  • the profiled bead which is thus formed by means of this molding cavity thus has a part which extends opposite the edge of the inner face 11 of the pane and a part which extends in opposite relation the song 13 of the glass; it does not have a portion that extends opposite the edge of the outer face 12 of the window.
  • This profiled bead is present against the edge 14 of the pane and extends in the continuity of the outer face 12 of the pane; the English term for this surface continuity between the outer face 12 of the window and the profiled bead is: "flush”.
  • the pane 1 bears on the fixed part of the mold 30 by the seal 4 'and bears against the movable mold part 32 the pane 1 by the seal 5'.
  • the seal 5 ' has a trunk 50 which is positioned in a groove 35 which is formed in the movable mold part 32, while protruding from this fixed mold part with respect to the surface of this mold part all around the throat 35 when the mold is open but also when the mold is closed, to prevent contact between the glass and the mold at this location.
  • This gasket 5 ' is part of the molding cavity 2.
  • a suction system 8 is located in the fixed mold portion 30; this suction system produces a depression between two seals 4 'and 6' during the injection of the plastic material so as to keep the window 1 in place in the mold 3.
  • the gasket 6 ' is similar to the gasket 4' but is more toward the center of the glass than the gasket 4 '.
  • the seal 6 ' has, like the seal 4', a trunk 60 which is positioned in a groove 36 which is formed in the fixed mold portion 30, and which has a lip (not visible in Figure 1 because crushed) protruding from this mold part fixed relative to the surface of this mold part, that is to say protruding above the groove 36 when the mold is open but also when the mold is closed, to prevent contact between the window and the mold there.
  • the pane 1 When the pane 1 is positioned in the fixed mold part 30, the pane is in contact in this fixed mold part 30 along its edge 14, as well as along an edge b of the outer face 12 of the pane ; this edge extends from the edge 14 to the joint 4 '.
  • the trunks 40, 50, 60, respectively of the joints 4 ', 5', 6 ' have a cross section, according to the plane of the sheet, which is parallelepipedic; these joints do not extend laterally from the trunk next to said groove, respectively 34, 35, 36 which accommodates them, neither during the closing of the mold 3, nor during the injection of the plastic material into the molding cavity 2.
  • the edge b has a width of the order of 25 to 35 mm.
  • Each seal 4 ', 6' comprises a trunk 40, 60 which has a rectangular section with a total width of the order of 6.0 mm and a total thickness of the order of 10.0 mm; they are each intended to penetrate into a groove 34, 36, having a rectangular section with an identical width of the order of 6.0 mm and a depth of the order of 7.0 mm.
  • the suction system 8 carries out a suction of the outer face 12 of the pane 1 between the two seals 4 ', 6' during the injection of the plastic into the molding cavity 2.
  • a seal 4 as visible in FIG. 2 or 3 or 4, or to use two seals 4 and 6, as visible in FIG. 2 or 3 or 4, instead respectively seal 4 'as visible in Figure 1 or two joints 4' and 6 'as visible in Figure 1.
  • a seal 4, 6 according to the invention is particular in that the seal has, when said mold is open, a ratio of width 1 to thickness e which is between 1.5 and 25.0 by integrating these values, or even between 2.0 and 25.0 by integrating these values, or even between 4.0 and 25.0 by integrating these values.
  • the seal 4, 6 illustrated in FIG. 2 has a generally flat cross-sectional shape with a single branch 41 extending laterally over a surface continuity S of the mold 30.
  • This seal has a width 1 of between 2.0 and 10, 0 mm, and more preferably between 3.0 and 8.0 mm; here precisely 5.0 mm.
  • the seal 4, 6 illustrated in FIG. 3 has a generally L-shaped cross section with a trunk 40 positioned in a groove 34 formed in a mold part 30 and a single branch 41 which extends laterally from the trunk 40 on a surface continuity S of the mold 30.
  • This seal has a width 1 of between 5.0 and 15.0 mm, and more preferably between 9.0 and 13.0 mm; here precisely 11.0 mm for a trunk having a width m of 6.0 mm and for a total thickness e of 10.0 mm.
  • the seal 4, 6 illustrated in FIG. 4 has a generally T-shaped cross section with a trunk 40 positioned in a groove 34 formed in a mold part (30) and two branches 41, 42 which each extend laterally from trunk 40 on two surface continuities S of the mold 30.
  • This seal has a width 1 of between 10.0 and 20.0 mm, and more preferably between 12.0 and 18.0 mm; here precisely 16.0 mm for a trunk having a width m of 6.0 mm and for a total thickness e of 10.0 mm.
  • the or each leg 41, 42 extends laterally over a surface continuity of the mold 30 over a distance of between 3.0 and 8.0 mm; here precisely 5.0 mm.
  • the or each branch 41, 42 has a height h, measured from the surface continuity of the mold 30, which is between 0.5 and 8 , 0 mm, and more preferably between 1.0 and 6.0 mm; here precisely 3.0 mm.
  • the window 1 is in contact with a mold part (here the fixed mold portion 30) along the edge b of the outer face 12 of the window which extends from the edge 14 at the joint 4 (for example to the lateral end of the trunk 40 or of a branch 41) and has a width of only between 1.0 and 10.0 mm, or even between 2.5 and 8, 0 mm.
  • a mold part here the fixed mold portion 30
  • the edge b of the outer face 12 of the window which extends from the edge 14 at the joint 4 (for example to the lateral end of the trunk 40 or of a branch 41) and has a width of only between 1.0 and 10.0 mm, or even between 2.5 and 8, 0 mm.
  • each of the seals has at least one branch 41, 42 which extends laterally on a surface continuity of the mold 30 and which is in contact with both the window 2 and the mold part 30 during closure. of the mold 3 and during the injection of the plastic into said molding cavity 2.
  • Each branch 41, 42 allows a better distribution of the sealing forces extends laterally on a mold surface continuity.
  • the contact between the joints 4 and 6 and the pane 1 is perfect throughout the injection and no burr is formed at the point of contact between the edge of the pane and the mold; the finish of the profiled bead is perfect and no recovery is necessary.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a method for moulding a profiled bead on the edge of a window (1), in which a plastic material constituting said profiled bead is introduced into a moulding cavity (2), said moulding cavity (2) being delimited partly by said window (1) and partly by walls of a mould (3) comprising at least a fixed mould part (30) and a movable mould part (32) that is movable relative to the fixed mould part (30), said mould parts cooperating in the closed state of the mould with said window (1) to form said moulding cavity (2), said moulding cavity (2) comprising a contact between a part of the mould (30, 32) and a rim (14) of said window (2) and a part of the mould (30, 32) comprising at least one seal (4) situated close to said contact and outside said moulding cavity (2), said seal (4), when viewed in cross section, having a total width (1) that is in contact with said window (1) when said mould (3) is closed and a total thickness (e), characterised in that said seal (4) has, when said mould (3) is open, a ratio of width (l) to thickness (e) of between 1.5 and 25.0, including these values, or indeed of between 2.0 and 25.0, including these values, or indeed between 4.0 and 25.0, including these values.

Description

PROCEDE DE MOULAGE D'UN CORDON PROFILE AFFLEURANT SUR UN ELEMENT VITRE ET DISPOSITIF DE MOULAGE POUR CE PROCEDE  METHOD FOR MOLDING A PROFILE CORD FLASHING ON A GLASS ELEMENT AND MOLDING DEVICE FOR SAID METHOD

La présente invention se rapporte au domaine du surmoulage de pièces pour la réalisation de vitrages. The present invention relates to the field of overmolding parts for the production of glazing.

La présente invention se rapporte plus particulièrement à la réalisation d'un cordon profilé sur le bord d'une vitre par surmoulage pour former un vitrage et en particulier un vitrage de véhicule.  The present invention relates more particularly to the production of a profiled bead on the edge of a window by overmolding to form a glazing unit and in particular a vehicle glazing.

Elle concerne plus particulièrement un procédé et un dispositif de moulage d'un cordon profilé au bord d'une vitre, dans lequel une matière plastique constitutive dudit cordon profilé est introduite par injection dans une cavité de moulage, ladite cavité de moulage étant délimitée pour partie par ladite vitre et pour autre partie par des parois d'un moule comportant au moins une partie fixe de moule et une partie mobile de moule qui est mobile par rapport à la partie fixe de moule, lesdites parties de moule coopérant à l'état fermé du moule avec ladite vitre pour former ladite cavité de moulage, ladite cavité de moulage comportant un contact entre une partie de moule et une arête de ladite vitre et une partie de moule comportant au moins un joint situé à proximité dudit contact et en dehors de ladite cavité de moulage, ledit joint présentant, vu en coupe transversale, une largeur totale et une épaisseur totale.  It relates more particularly to a method and a device for molding a profiled bead at the edge of a window, in which a constituent plastic material of said profiled bead is introduced by injection into a molding cavity, said molding cavity being delimited in part by said pane and for other part by walls of a mold having at least one fixed mold part and a movable mold part which is movable with respect to the fixed mold part, said mold parts cooperating in the closed state mold with said pane to form said molding cavity, said molding cavity having a contact between a mold portion and an edge of said pane and a mold portion having at least one seal located near said contact and outside said molding cavity, said seal having, in cross section, a total width and a total thickness.

La figure 1 ci-jointe illustre un tel procédé et dispositif de l'art antérieur, avec un joint 4' situé en dehors d'une cavité de moulage 2 et présentant un tronc 40 positionné dans une gorge 34 ménagée dans une partie de moule 30.  Figure 1 attached illustrates such a method and device of the prior art, with a seal 4 'located outside a mold cavity 2 and having a trunk 40 positioned in a groove 34 formed in a mold portion 30 .

II arrive qu'un tronc de joint présente une ou plusieurs rainures à proximité de la vitre ; toutefois, un tronc de joint est toujours dans la continuité verticale de la gorge qui l'accueille.  It happens that a seal trunk has one or more grooves near the glass; however, a joint trunk is always in the vertical continuity of the groove that receives it.

L'art antérieur connaît par ailleurs des figures 9 et 10 de la demande internationale de brevet N° WO 98/05487, un procédé et un dispositif avec une cavité de moulage qui est délimitée pour partie par ladite vitre et pour autre partie par des parois d'un moule mais dans ce document un joint est en contact, au moins par une arête, avec cette cavité de moulage. Ce procédé et ce dispositif ont notamment pour inconvénient de nécessiter très souvent une reprise manuelle de finition par un opérateur, car la peau du cordon profilé présente alors souvent des défauts dans la zone correspondant à la présence du joint dans la cavité de moulage, ce qui augmente le coût de fabrication. The prior art also knows FIGS. 9 and 10 of International Patent Application No. WO 98/05487, a method and a device with a molding cavity which is delimited in part by said window and partly by walls. of a mold but in this document a seal is in contact, at least by an edge, with this mold cavity. This method and this device have the particular drawback of requiring very often a manual finishing by an operator, because the skin of the profiled bead then often has defects in the area. corresponding to the presence of the seal in the molding cavity, which increases the cost of manufacture.

Le procédé et le dispositif illustrés en figure 1 ci-jointe permettent d'éviter de telles reprises mais ne donnent pas entièrement satisfaction car il arrive fréquemment que l'injection sous pression dans la cavité de moulage provoque une rupture de la vitre, en particulier lorsqu'elle est feuilletée.  The method and the device illustrated in Figure 1 attached to avoid such recovery but do not entirely satisfactory because it often happens that the injection under pressure in the mold cavity causes rupture of the window, particularly when it is flaky.

En effet, le contact indispensable entre la partie de moule, généralement en alliage métallique, et la vitre provoque parfois une rupture de cette vitre.  Indeed, the essential contact between the mold part, usually made of metal alloy, and the glass sometimes causes a rupture of this window.

Sur une série d'environ 1000 vitrages, il a été constaté un taux de rupture de la vitre d'environ 6 %, ce qui est élevé.  On a series of about 1000 glazings, it was found a glass breakage rate of about 6%, which is high.

L'art antérieur connaît par ailleurs de la demande internationale de brevet N° WO 2006/35180 un procédé de moulage d'un cordon profilé au bord d'une vitre qui utilise un joint comportant un évent. Dans ce procédé, lors de l'injection de la matière constitutive du cordon profilé, le contact surfacique entre le joint et la vitre est extrêmement petit. Le texte précise que ce procédé engendre nécessairement une bavure sur chaque vitrage, qui est plus ou moins grande au niveau de l'évent en fonction de la quantité de matière du cordon profilé qui s'est échappée.  The prior art also knows from International Patent Application No. WO 2006/35180 a method of molding a profiled bead at the edge of a window which uses a seal comprising a vent. In this process, during the injection of the constitutive material of the profiled bead, the surface contact between the seal and the pane is extremely small. The text states that this process necessarily generates a burr on each pane, which is larger or smaller at the level of the vent as a function of the amount of material of the profiled bead that has escaped.

Le but de l'invention est de pallier les inconvénients de l'art antérieur en proposant un procédé et un dispositif de moulage qui permettent de mouler un cordon profilé dans une cavité de moulage sans joint, sans risque de perte d'étanchéité, tout en diminuant le risque de casse des vitres en moule, particulièrement pour les vitres présentant une forme non symétrique ou un bombage à tolérance élevée.  The object of the invention is to overcome the disadvantages of the prior art by providing a method and a molding device that can mold a profiled bead in a seamless molding cavity, without risk of leakage, while reducing the risk of breakage of panes in mold, particularly for windows having a non-symmetrical shape or a high tolerance bending.

Un autre but important de l'invention est ainsi de permettre de réaliser des séries de vitrages d'une manière fiable et peu onéreuse, sans bavure.  Another important object of the invention is thus to make it possible to produce series of glazings in a reliable and inexpensive way, without smudging.

La présente invention entend aller à Γ encontre des connaissances usuelles qui recommandent un contact surfacique petit entre le joint et la vitre et entend proposer un contact surfacique élevé entre le joint et la vitre.  The present invention intends to defeat the usual knowledge that recommends a small surface contact between the seal and the glass and intends to provide a high surface contact between the seal and the glass.

La présente invention se rapporte ainsi dans son acception la plus large à un procédé de moulage d'un cordon profilé au bord d'une vitre selon la revendication 1. Les revendications dépendantes présentent des caractéristiques optionnelles avantageuses. Selon ce procédé, une matière plastique constitutive dudit cordon profilé est introduite dans une cavité de moulage, ladite cavité de moulage étant délimitée pour partie par ladite vitre et pour autre partie par des parois d'un moule comportant au moins une partie fixe de moule et une partie mobile de moule qui est mobile par rapport à la partie fixe de moule, lesdites parties de moule coopérant à l'état fermé du moule avec ladite vitre pour former ladite cavité de moulage, ladite cavité de moulage comportant un contact entre une partie de moule et une arête de ladite vitre et une partie de moule comportant au moins un joint situé à proximité dudit contact et en dehors de ladite cavité de moulage, ledit joint présentant, vu en coupe transversale, une largeur totale qui est au contact de ladite vitre lorsque ledit moule est fermé et une épaisseur totale. The present invention thus relates in its broadest sense to a method of molding a profiled bead to the edge of a pane according to claim 1. The dependent claims have advantageous optional features. According to this method, a plastic material constitutive of said profiled bead is introduced into a molding cavity, said molding cavity being delimited in part by said glass and for other part by walls of a mold comprising minus a fixed mold part and a mold moving part which is movable with respect to the fixed mold part, said mold parts cooperating in the closed state of the mold with said pane to form said molding cavity, said molding cavity comprising a contact between a mold part and an edge of said pane and a mold part comprising at least one seal located close to said contact and outside said molding cavity, said seal having, in cross section, a total width which is in contact with said window when said mold is closed and a total thickness.

Ce procédé est remarquable en ce que ledit joint présente, lorsque ledit moule est ouvert, un rapport de largeur sur épaisseur qui est compris entre 1,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs.  This method is remarkable in that said seal has, when said mold is open, a width to thickness ratio which is between 1.5 and 25.0 by integrating these values, or even between 2.0 and 25.0 by integrating these values, even between 4.0 and 25.0 by integrating these values.

Ainsi, ledit joint comporte au moins une branche qui s'étend latéralement sur une continuité de surface dudit moule et qui est au contact à la fois de ladite vitre et de ladite partie de moule lors la fermeture dudit moule et pendant l'injection de la matière plastique dans ladite cavité de moulage.  Thus, said seal comprises at least one branch which extends laterally on a surface continuity of said mold and which is in contact with both said window and said mold part during the closing of said mold and during the injection of the mold. plastic material in said molding cavity.

Les caractéristiques particulières du joint sont présentent sur toute la longueur du joint.  The particular characteristics of the seal are present along the entire length of the seal.

De préférence, ledit joint présente en coupe transversale :  Preferably, said seal has in cross section:

- une forme générale plate avec une seule branche s 'étendant latéralement sur une continuité de surface dudit moule, ou  a generally flat shape with a single branch extending laterally over a surface continuity of said mold, or

- une forme générale de L avec un tronc positionné dans une gorge ménagée dans une partie de moule et une seule branche s 'étendant latéralement sur une continuité de surface dudit moule, ou  a general shape of L with a trunk positioned in a groove formed in a mold part and a single branch extending laterally over a surface continuity of said mold, or

- une forme générale de T avec un tronc positionné dans une gorge ménagée dans une partie de moule et deux branches s 'étendant chacune latéralement sur une continuité de surface dudit moule.  - A general shape of T with a trunk positioned in a groove in a mold part and two branches each extending laterally on a surface continuity of said mold.

Une continuité de surface de moule désigne que la surface du moule est plate, par exemple sans gorge, ni cavité.  A mold surface continuity means that the surface of the mold is flat, for example without groove, or cavity.

De préférence par ailleurs, ladite vitre est en contact d'une partie de moule le long d'un bord de la face extérieure de la vitre qui s'étend de ladite arête audit joint et qui présente une largeur comprise entre 1,0 et 10,0 mm, voire entre 2,5 et 8,0 mm.  Preferably also, said pane is in contact with a mold part along an edge of the outer face of the pane which extends from said ridge to said seal and which has a width of between 1.0 and 10. , 0 mm, or even between 2.5 and 8.0 mm.

De préférence en outre, ladite cavité de moulage dudit cordon profilé ne comporte aucun joint. Le procédé est particulièrement indiqué lorsqu'un système d'aspiration réalise une aspiration d'une face de la vitre dans une zone latérale entre deux joints pendant l'injection de ladite matière plastique dans ladite cavité de moulage dont un joint au moins est selon l'invention, voire les deux joints sont selon l'invention. Ainsi, le système d'aspiration réalise une aspiration d'une face de la vitre entre deux joints pendant l'injection de ladite matière plastique dans ladite cavité de moulage, les deux joints présentant chacun, de préférence, lorsque ledit moule est ouvert, un rapport de largeur sur épaisseur qui est compris entre 1,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs. Ces deux joints présentent en outre, de préférence, le même rapport de largeur sur épaisseur afin de faciliter la répartition des contraintes et la gestion de l'aspiration. Also preferably, said molding cavity of said profiled bead has no seal. The method is particularly indicated when a suction system draws a face of the window in a lateral zone between two joints during the injection of said plastic material into said molding cavity of which at least one seal is invention, or both joints are according to the invention. Thus, the suction system carries out a suction of a face of the window between two seals during the injection of said plastic into said molding cavity, the two seals each preferably having, when said mold is opened, a width to thickness ratio which is between 1.5 and 25.0 integrating these values, or even between 2.0 and 25.0 integrating these values, or even between 4.0 and 25.0 by integrating these values. In addition, these two seals preferably have the same width to thickness ratio in order to facilitate the distribution of the stresses and the management of the suction.

La présente invention se rapporte également à un dispositif, notamment pour la mise en œuvre du procédé selon l'invention, pour le moulage d'un cordon profilé au bord d'une vitre, dans lequel une matière plastique constitutive dudit cordon profilé est introduite dans une cavité de moulage, ladite cavité de moulage étant délimitée pour partie par ladite vitre et pour autre partie par des parois d'un moule comportant au moins une partie fixe de moule et une partie mobile de moule qui est mobile par rapport à la partie fixe de moule, lesdites parties de moule coopérant à l'état fermé du moule avec ladite vitre pour former ladite cavité de moulage, ladite cavité de moulage comportant un contact entre une partie de moule et une arête de ladite vitre et une partie de moule comportant au moins un joint situé à proximité dudit contact et en dehors de ladite cavité de moulage, ledit joint présentant, vu en coupe transversale, une largeur totale et une épaisseur totale.  The present invention also relates to a device, in particular for implementing the method according to the invention, for molding a profiled bead at the edge of a window, in which a constituent plastic material of said profiled bead is introduced into a molding cavity, said molding cavity being delimited in part by said window and partly by walls of a mold comprising at least one fixed mold part and a moving mold part which is movable with respect to the fixed part mold, said mold portions cooperating in the closed state of the mold with said pane to form said mold cavity, said mold cavity having a contact between a mold portion and an edge of said pane and a mold portion having at least one mold portion; at least one seal located near said contact and outside said molding cavity, said seal having, in cross section, a total width and a total thickness e.

Le dispositif selon l'invention est remarquable en ce que ledit joint présente, lorsque ledit moule est ouvert, un rapport de largeur sur épaisseur qui est compris entre 1,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs.  The device according to the invention is remarkable in that said seal has, when said mold is open, a width to thickness ratio which is between 1.5 and 25.0 by integrating these values, or even between 2.0 and 25. , 0 by integrating these values, or even between 4.0 and 25.0 by integrating these values.

De préférence, ledit joint de ce dispositif présente en coupe transversale :  Preferably, said seal of this device has in cross section:

- une forme générale plate avec une seule branche s 'étendant latéralement sur une continuité de surface dudit moule, ou  a generally flat shape with a single branch extending laterally over a surface continuity of said mold, or

- une forme générale de L avec un tronc positionné dans une gorge ménagée dans une partie de moule et une seule branche s 'étendant latéralement sur une continuité de surface dudit moule, ou - une forme générale de T avec un tronc positionné dans une gorge ménagée dans une partie de moule et deux branches s 'étendant latéralement chacune sur une continuité de surface dudit moule. a general shape of L with a trunk positioned in a groove formed in a mold part and a single branch extending laterally over a surface continuity of said mold, or - A general shape of T with a trunk positioned in a groove in a mold part and two branches extending laterally each on a surface continuity of said mold.

De préférence, ladite branche, ou lesdites branches lorsqu'il y en a deux, présentent) une hauteur, mesurée à partir de ladite continuité de surface dudit moule, qui est comprise entre 0,5 et 8,0 mm en intégrant ces valeurs, et de préférence encore qui est comprise entre 1,0 et 6,0 mm en intégrant ces valeurs, voire entre 2,0 et 4,0 en intégrant ces valeurs.  Preferably, said branch, or said branches when there are two, have a height, measured from said surface continuity of said mold, which is between 0.5 and 8.0 mm by integrating these values, and more preferably that is between 1.0 and 6.0 mm by integrating these values, or even between 2.0 and 4.0 by integrating these values.

De préférence, ladite branche, ou lesdites branches lorsqu'il y en a deux, présentent) chacune une largeur totale qui est comprise entre 2,0 et 10,0 mm en intégrant ces valeurs.  Preferably, said branch, or said branches when there are two, each have a total width which is between 2.0 and 10.0 mm integrating these values.

De préférence par ailleurs, au moins une branche comporte au moins un bossage avec une pointe de bosse orientée en direction de ladite vitre et ladite pointe de bosse qui s'étend selon un angle a de préférence de l'ordre de 120° plus ou moins 10°.  Preferably, moreover, at least one branch comprises at least one boss with a hump point oriented in the direction of said window and said hump point which extends at an angle a preferably of the order of 120 ° more or less 10 °.

Le dispositif est particulièrement indiqué lorsqu'un système d'aspiration est situé dans une partie de moule entre deux joints dont un joint au moins est selon l'invention, voire les deux joints sont selon l'invention. Ainsi, le système d'aspiration réalise une aspiration d'une face de la vitre entre deux joints pendant l'injection de ladite matière plastique dans ladite cavité de moulage, les deux joints présentant chacun, de préférence, lorsque ledit moule est ouvert, un rapport de largeur sur épaisseur qui est compris entre 1,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs.  The device is particularly indicated when a suction system is located in a mold part between two joints of which at least one seal is according to the invention, or both joints are according to the invention. Thus, the suction system carries out a suction of a face of the window between two seals during the injection of said plastic into said molding cavity, the two seals each preferably having, when said mold is opened, a width to thickness ratio which is between 1.5 and 25.0 integrating these values, or even between 2.0 and 25.0 integrating these values, or even between 4.0 and 25.0 by integrating these values.

La matière des joints peut être : The material of the joints can be:

· Polyuréthane  · Polyurethane

• Silicone à structure pleine, alvéolaire inclusions ouvertes ou fermées  • Silicone with solid structure, alveolar inclusions open or closed

• Thermoplastique TPE  • Thermoplastic TPE

• Co-extrusion de matériaux de différente dureté (mais de même nature).  • Co-extrusion of materials of different hardness (but of the same nature).

La dureté de la matière des joints peut être une dureté comprise entre 10 et 90 shore A, préférentiellement entre 20 et 30 shore A et préférentiellement encore de 25 shore A.  The hardness of the material of the joints may be a hardness of between 10 and 90 Shore A, preferably between 20 and 30 Shore A and more preferably 25 Shore A.

Il est possible par ailleurs de prévoir un fil co-extrudé garantissant une continuité de la section du joint même en cas d'élongation du joint, par exemple si un opérateur tire de part et d'autre du joint, ce dernier ne se détend pas et la section reste identique car le fil, rigide, garanti cela. It is also possible to provide a coextruded wire ensuring a continuity of the joint section even in case of elongation of the joint, for example if a operator pulls on both sides of the seal, it does not relax and the section remains the same because the wire, rigid, guaranteed that.

Avantageusement, le procédé et le dispositif selon l'invention permettent de réaliser une adaptation simple, fiable et précise des contours de la cavité de moulage aux différentes variations de galbes nécessairement constatées dans une série de vitrages bombés identiques (même bombage général, pour fermer la même baie). Advantageously, the method and the device according to the invention make it possible to achieve a simple, reliable and precise adaptation of the contours of the molding cavity to the different variations of curves necessarily observed in a series of identical curved glazings (same general bending, to close the same bay).

Avantageusement, l'invention permet ainsi de réduire très fortement le taux de casse de vitres bombées en moule, même comparé aux technologies déjà connues. Ce taux de casse de vitres en moule est ainsi proche de zéro lors de la mise en œuvre du procédé selon l'invention.  Advantageously, the invention thus makes it possible to very greatly reduce the rate of breakage of curved panes in a mold, even compared to technologies already known. This breakage rate of molded panes is thus close to zero during the implementation of the method according to the invention.

Avantageusement, l'invention peut être mise en œuvre pour un cordon profilé périphérique, c'est-à-dire faisant tout le tour de la vitre. Un tel cordon profilé est particulièrement difficile à réaliser.  Advantageously, the invention can be implemented for a peripheral profiled bead, that is to say all around the glass. Such a profiled bead is particularly difficult to achieve.

Avantageusement en outre, l'invention permet d'utiliser des moules à une seule cavité de moulage pour tout le pourtour de la vitre.  Advantageously further, the invention makes it possible to use molds with a single molding cavity for the entire periphery of the window.

Avantageusement encore, comme la pression de fermeture de la cavité de moulage est maintenue d'une manière adéquate d'une vitre à l'autre tout au long de la série, la matière plastique formant le cordon profilé ne s'échappe pas de la cavité de moulage et il n'y a pas besoin de réaliser de reprise manuelle sur les cordons profilés ; les cordons profilés présentent toujours la forme souhaitée. Il n'y a pas d'évent au niveau du joint.  Advantageously, since the closing pressure of the molding cavity is adequately maintained from one pane to the other throughout the series, the plastic material forming the profiled bead does not escape from the cavity. molding and there is no need to perform manual recovery on the profiled cords; the profiled beads always have the desired shape. There is no vent at the joint.

La présente invention sera mieux comprise à la lecture de la description détaillée ci-après d'exemples de réalisation non limitatifs et des figures ci-jointes : The present invention will be better understood on reading the following detailed description of nonlimiting exemplary embodiments and the attached figures:

• La figure 1 illustre une vue en coupe schématique et partielle d'un exemple de mise en œuvre d'un procédé de l'art antérieur et de réalisation du dispositif de moulage de l'art antérieur pour ce procédé, en position moule fermé, prêt pour l'injection de la matière du cordon profilé dans la cavité de moulage ; et  FIG. 1 illustrates a schematic and partial sectional view of an exemplary implementation of a method of the prior art and of producing the molding device of the prior art for this process, in a closed mold position, ready for injecting the shaped bead material into the molding cavity; and

· Les figures 2 à 4 illustrent chacune une vue en coupe transversale d'un exemple de réalisation d'un joint pour le procédé et le dispositif selon l'invention.  Figures 2 to 4 each illustrate a cross-sectional view of an embodiment of a seal for the method and the device according to the invention.

Dans ces figures, les proportions entre les différents éléments sont respectées mais les éléments en arrière-plan ne sont en général pas représentés, afin de faciliter leur lecture. La présente invention se rapporte à la fabrication d'un cordon profilé en un matériau en matière plastique souple par moulage à la périphérie d'une vitre pour former un vitrage et notamment un vitrage de véhicule. In these figures, the proportions between the different elements are respected but the elements in the background are not generally represented, in order to facilitate their reading. The present invention relates to the manufacture of a profiled bead of a flexible plastic material by molding on the periphery of a window to form a glazing and in particular a vehicle glazing.

La matière plastique constitutive du cordon profilé peut être un thermoplastique (PVC, TPE, ...), un polyuréthanne ou encore un caoutchouc synthétique du type EPDM ou toute autre matière adéquate.  The constituent plastic material of the profiled bead may be a thermoplastic (PVC, TPE, ...), a polyurethane or a synthetic rubber of the EPDM type or any other suitable material.

Le cordon profilé est généralement disposé sur toute la périphérie de la vitre mais ce cordon profilé pourrait tout à fait n'être positionné que sur une partie de la périphérie du vitrage ou sur une partie quelconque du vitrage.  The profiled bead is generally disposed over the entire periphery of the window, but this profiled bead could quite well be positioned only on a part of the periphery of the glazing or on any part of the glazing.

Le vitrage, qui est constitué au moins de la vitre et du cordon profilé, ainsi que éventuellement d'accessoires et notamment d'accessoires de fixation du vitrage ou des éléments de rigidifïcation du vitrage, comme des inserts plastiques ou métalliques, est destiné à fermer une baie réalisant une séparation entre un espace intérieur et un espace extérieur. La vitre 1 présente ainsi une face intérieure 11, destinée à être tournée vers l'espace intérieur, une face extérieure 12 destinée à être tournée vers l'espace extérieur, ainsi qu'un chant périphérique 13.  The glazing, which consists at least of the window and the profiled bead, as well as possibly accessories and in particular accessories for fixing the glazing or stiffening elements of the glazing, such as plastic or metal inserts, is intended to close a bay making a separation between an interior space and an outside space. The window 1 thus has an inner face 11, intended to be turned towards the inner space, an outer face 12 intended to be turned towards the outer space, and a peripheral edge 13.

La vitre peut être monolithique, c'est-à-dire constitué d'une feuille de matière unique, ou être composite, c'est-à-dire constitué de plusieurs feuilles de matière entre lesquelles est insérée au moins une couche de matière adhérente dans le cas des vitrages feuilletés, ou entre lesquelles est présent au moins un espace intercalaire dans le cas des vitrages multiples (doubles vitrages, triples vitrages, ...). La (ou les) feuille(s) de matière peut (ou peuvent) être minérale(s), notamment en verre, ou organique(s), notamment en matière plastique.  The pane may be monolithic, that is to say consisting of a sheet of single material, or be composite, that is to say consisting of several sheets of material between which is inserted at least one layer of adherent material in the case of laminated glass, or between which there is at least one intermediate space in the case of multiple glazing (double glazing, triple glazing, ...). The sheet (s) of material may (or may) be mineral (s), in particular glass, or organic (s), including plastic.

Dans le cas d'un vitrage pour véhicule, le vitrage présente généralement au moins partiellement à sa périphérie une bande d'ornementation, non illustrée ici. Cette bande d'ornementation résulte en général d'un dépôt d'émail, réalisé sur la face intérieure du vitrage ou sur une face intercalaire du vitrage pour les vitrages composites, mais elle peut également résulter d'une coloration partielle et/ou périphérique d'une feuille de matière utilisée, notamment d'une feuille en matière organique.  In the case of a vehicle glazing, the glazing generally has at least partially at its periphery an ornamental strip, not shown here. This strip of ornamentation generally results from an enamel deposit, made on the inner face of the glazing or on an intermediate face of the glazing for the composite glazing, but it can also result from a partial and / or peripheral coloration of the glazing. a sheet of material used, especially a sheet of organic material.

Le cordon profilé est fabriqué par mise en œuvre d'un procédé de fabrication appelé « encapsulation » car il comporte une étape de moulage du cordon profilé dans un dispositif de moulage comportant un moule comportant au moins une partie fixe de moule et une partie mobile de moule qui est mobile par rapport à la partie fixe de moule, lesdites parties de moule coopérant à l'état fermé du moule, pendant l'étape de moulage, avec ladite vitre pour former une cavité de moulage présentant en coupe la forme du profil du cordon profilé. The profiled bead is manufactured by implementing a manufacturing process called "encapsulation" because it comprises a step of molding the profiled bead in a molding device comprising a mold comprising at least a fixed portion of mold and a moving mold part which is movable relative to the fixed mold part, said mold parts cooperating in the closed state of the mold, during the molding step, with said pane to form a mold cavity having cuts the shape of the profiled bead profile.

Le dispositif de moulage comporte par ailleurs des moyens pour ouvrir et fermer le moule, ainsi que de moyens pour appliquer une pression sur le moule lors de l'injection de la matière formant le cordon profilé dans la cavité de moulage ; ces moyens ne sont pas illustrés ici.  The molding device further comprises means for opening and closing the mold, as well as means for applying a pressure on the mold during the injection of the material forming the profiled bead in the molding cavity; these means are not illustrated here.

Comme visible sur la figure 1 , pour fabriquer le cordon profilé par moulage, la vitre 1 est positionnée dans une partie de moule, ici la partie fixe 30 de moule, inférieure, puis une partie mobile 32 de moule, supérieure, est positionnée sur la partie fixe 30 de moule, afin de former dans l'espace fermé entre ces deux parties de moule une cavité de moulage 2.  As can be seen in FIG. 1, in order to manufacture the profiled bead by molding, the pane 1 is positioned in a mold part, here the fixed, lower mold part 30, then an upper moldable moving part 32 is positioned on the mold part. fixed portion 30 of mold, so as to form in the closed space between these two mold parts a molding cavity 2.

Le bord de la vitre pénètre ainsi dans la cavité de moulage 2 pour pouvoir mouler le cordon profilé à la périphérie de la vitre 1, en contact avec une arête 14 de la vitre et plus précisément ici une arête inférieure en référence à l'orientation en figure 1 ; il s'agit d'une arête droite, sensiblement à 90 °, et non courbe/arrondie.  The edge of the window thus penetrates into the molding cavity 2 in order to be able to mold the profiled bead at the periphery of the pane 1, in contact with an edge 14 of the pane and more precisely here a lower edge with reference to the orientation in figure 1 ; it is a straight edge, substantially 90 °, and not curved / rounded.

Ainsi, la cavité de moulage 2 dans laquelle la matière plastique constitutive du cordon profilé est introduite est délimitée pour partie par la vitre 1 et pour autre partie par des parois du moule 3 ; cette cavité de moulage 2 ne comporte aucun joint.  Thus, the molding cavity 2 in which the plastic material constituting the profiled bead is introduced is delimited in part by the pane 1 and in part by walls of the mold 3; this molding cavity 2 has no seal.

Le mouvement d'ouverture et de fermeture du moule 3, c'est-à-dire le déplacement de la partie mobile 32 par rapport à la partie fixe 30 est ici un mouvement selon la direction verticale, en référence à l'orientation de la figure 1, mais ce mouvement pourrait aussi être selon la direction horizontale ou selon toute autre direction, éventuellement courbée.  The movement of opening and closing of the mold 3, that is to say the displacement of the movable portion 32 relative to the fixed part 30 is here a movement in the vertical direction, with reference to the orientation of the Figure 1, but this movement could also be in the horizontal direction or in any other direction, possibly curved.

La partie fixe 30 est par ailleurs fixée sur un bâti d'un dispositif de moulage 10.  The fixed part 30 is moreover fixed on a frame of a molding device 10.

La matière plastique constitutive du cordon profilé est injectée dans la cavité de moulage par l'intermédiaire d'au moins un orifice d'injection (non illustré).  The constituent plastic material of the profiled bead is injected into the mold cavity through at least one injection port (not shown).

Du fait que la vitre 1 n'est pas plate mais bombée, il se pose un problème d'adaptation des vitres 1 de la série dans le moule 3. En effet, les technologies qui permettent de réaliser une série de vitres bombées, et en particulier la technique de bombage de feuille (s) de verre minéral, ne permettent pas de garantir une reproductibilité absolue de la courbe d'une vitre à l'autre à l'intérieur d'une série : il existe toujours une tolérance de fabrication, qui est au mieux de l'ordre de 2 à 5 dixièmes de millimètre, suivant la dimension de la vitre. Since the window 1 is not flat but curved, there is a problem of adaptation of the windows 1 of the series in the mold 3. In fact, the technologies that make it possible to produce a series of curved panes, and particularly the bending technique of mineral glass sheet (s), does not make it possible to guarantee an absolute reproducibility of the curve of one glass pane to another inside a series: it There is always a manufacturing tolerance, which is at best of the order of 2 to 5 tenths of a millimeter, depending on the size of the window.

Selon une caractéristique particulière, une partie de moule (ici la partie de moule fixe 30, mais ce pourrait-être aussi la partie de moule mobile) comporte au moins un joint 4' d'étanchéité qui est situé en dehors de la cavité de moulage 2 et ne se trouve donc pas en contact avec le cordon profilé lors de la formation de ce cordon profilé. Ce joint 4' présente un tronc 40 qui est positionné dans une gorge 34 qui est ménagée dans la partie de moule fixe 30, et qui présente une lèvre (non visible en figure 1 car écrasée) dépassant de cette partie de moule fixe par rapport à la surface de cette partie de moule, c'est-à-dire dépassant au-dessus de la gorge 34 lorsque le moule est ouvert mais aussi lorsque le moule est fermé, afin d'empêcher le contact entre la vitre et le moule à cet endroit.  According to a particular characteristic, a mold part (here the fixed mold part 30, but it could also be the movable mold part) comprises at least one seal 4 'which is situated outside the molding cavity 2 and is therefore not in contact with the profiled bead during the formation of this profiled bead. This seal 4 'has a trunk 40 which is positioned in a groove 34 which is formed in the fixed mold portion 30, and which has a lip (not visible in Figure 1 because crushed) protruding from this fixed mold portion relative to the surface of this mold part, that is to say protruding above the groove 34 when the mold is open but also when the mold is closed, to prevent contact between the glass and the mold to this in law.

Comme visible sur la figure 1 , lorsque le moule 3 est fermé, le pourtour de la cavité de moulage 2 est défini : As can be seen in FIG. 1, when the mold 3 is closed, the periphery of the molding cavity 2 is defined:

- par une portion de la face intérieure 31 de la partie fixe 30 inférieure, by a portion of the inner face 31 of the lower fixed part 30,

- par une portion de la face intérieure 33 de la partie mobile 32 supérieure,by a portion of the inner face 33 of the upper mobile part 32,

- par une portion du bord périphérique de la face intérieure 11 de la vitre 1, par le chant 13 de la vitre jusqu'à l'arête 14 de la vitre. - By a portion of the peripheral edge of the inner face 11 of the window 1, by the edge 13 of the window to the edge 14 of the window.

Le cordon profilé qui est ainsi formé grâce à cette cavité de moulage présente ainsi une partie qui s'étend en vis-à-vis du bord de la face intérieure 11 de la vitre et une partie qui s'étend en vis-à-vis du chant 13 de la vitre ; il ne comporte pas de partie qui s'étend en vis-à-vis du bord de la face extérieure 12 de la vitre.  The profiled bead which is thus formed by means of this molding cavity thus has a part which extends opposite the edge of the inner face 11 of the pane and a part which extends in opposite relation the song 13 of the glass; it does not have a portion that extends opposite the edge of the outer face 12 of the window.

Ce cordon profilé est présent contre l'arête 14 de la vitre et s'étend dans la continuité de la face extérieure 12 de la vitre ; le terme anglais pour désigner cette continuité de surface entre la face extérieure 12 de la vitre et le cordon profilé est : « flush ».  This profiled bead is present against the edge 14 of the pane and extends in the continuity of the outer face 12 of the pane; the English term for this surface continuity between the outer face 12 of the window and the profiled bead is: "flush".

Pendant l'injection de la matière dans la cavité de moulage, la vitre 1 prend appui sur la partie fixe de moule 30 par le joint 4' et prend appui sur la partie mobile de moule 32 la vitre 1 par le joint 5'.  During the injection of the material into the molding cavity, the pane 1 bears on the fixed part of the mold 30 by the seal 4 'and bears against the movable mold part 32 the pane 1 by the seal 5'.

Le joint 5' présente, un tronc 50 qui est positionné dans une gorge 35 qui est ménagée dans la partie de moule mobile 32, tout en dépassant de cette partie de moule fixe par rapport à la surface de cette partie de moule tout autour de la gorge 35 lorsque le moule est ouvert mais aussi lorsque le moule est fermé, afin d'empêcher le contact entre la vitre et le moule à cet endroit. Ce joint 5' fait partie de la cavité de moulage 2. The seal 5 'has a trunk 50 which is positioned in a groove 35 which is formed in the movable mold part 32, while protruding from this fixed mold part with respect to the surface of this mold part all around the throat 35 when the mold is open but also when the mold is closed, to prevent contact between the glass and the mold at this location. This gasket 5 'is part of the molding cavity 2.

Un système d'aspiration 8 est situé dans la partie de moule fixe 30 ; ce système d'aspiration réalise une dépression entre deux joints 4' et 6' pendant l'injection de la matière plastique afin de permettre de conserver la vitre 1 en place dans le moule 3.  A suction system 8 is located in the fixed mold portion 30; this suction system produces a depression between two seals 4 'and 6' during the injection of the plastic material so as to keep the window 1 in place in the mold 3.

Le joint 6' est similaire au joint 4' mais est plus vers le centre de la vitre que le joint 4'.  The gasket 6 'is similar to the gasket 4' but is more toward the center of the glass than the gasket 4 '.

Le joint 6' présente, comme le joint 4', un tronc 60 qui est positionné dans une gorge 36 qui est ménagée dans la partie de moule fixe 30, et qui présente une lèvre (non visible en figure 1 car écrasée) dépassant de cette partie de moule fixe par rapport à la surface de cette partie de moule, c'est-à-dire dépassant au-dessus de la gorge 36 lorsque le moule est ouvert mais aussi lorsque le moule est fermé, afin d'empêcher le contact entre la vitre et le moule à cet endroit.  The seal 6 'has, like the seal 4', a trunk 60 which is positioned in a groove 36 which is formed in the fixed mold portion 30, and which has a lip (not visible in Figure 1 because crushed) protruding from this mold part fixed relative to the surface of this mold part, that is to say protruding above the groove 36 when the mold is open but also when the mold is closed, to prevent contact between the window and the mold there.

Lorsque la vitre 1 est positionné dans la partie de moule fixe 30, la vitre est en contact dans cette partie de moule fixe 30 le long de son arête 14, ainsi que le long d'un bord b de la face extérieure 12 de la vitre ; ce bord s'étend de l'arête 14 jusqu'au joint 4'. Dans l'art antérieur qui est illustré sur cette figure 1, les troncs 40, 50, 60, respectivement des joints 4', 5', 6' présentent une section transversale, selon le plan de la feuille, qui est parallélépipédique ; ces joints ne s'étendent pas latéralement à partir du tronc à côté de ladite gorge, respectivement 34, 35, 36 qui les accueille, ni lors la fermeture du moule 3, ni pendant l'injection de la matière plastique dans la cavité de moulage 2.  When the pane 1 is positioned in the fixed mold part 30, the pane is in contact in this fixed mold part 30 along its edge 14, as well as along an edge b of the outer face 12 of the pane ; this edge extends from the edge 14 to the joint 4 '. In the prior art which is illustrated in this figure 1, the trunks 40, 50, 60, respectively of the joints 4 ', 5', 6 'have a cross section, according to the plane of the sheet, which is parallelepipedic; these joints do not extend laterally from the trunk next to said groove, respectively 34, 35, 36 which accommodates them, neither during the closing of the mold 3, nor during the injection of the plastic material into the molding cavity 2.

Dans cet art antérieur, le bord b présente une largeur de l'ordre de 25 à 35 mm. In this prior art, the edge b has a width of the order of 25 to 35 mm.

Dans cet art antérieur, le contact entre les joints 4', 5', 6' et la vitre 1 est imparfait tout au long de l'injection et il arrive qu'une bavure se forme à l'endroit du bord b, c'est-à-dire à l'endroit du contact entre la face extérieure de la vitre et le moule, en particulier sous l'effet d'aspiration par le système d'aspiration 8 ; la finition du cordon profilé nécessite alors une opération de reprise manuelle par un opérateur. In this prior art, the contact between the joints 4 ', 5', 6 'and the pane 1 is imperfect throughout the injection and it happens that a burr is formed at the edge of the edge b, c' that is to say at the point of contact between the outer face of the pane and the mold, in particular under the effect of suction by the suction system 8; the finishing of the profiled bead then requires a manual recovery operation by an operator.

Chaque joint 4', 6' comporte un tronc 40, 60 qui présente une section rectangulaire avec une largeur totale de l'ordre de 6,0 mm et une épaisseur totale de l'ordre de 10,0 mm ; ils sont chacun destinés à pénétrer dans une rainure 34, 36, présentant une section rectangulaire avec une largeur identique de l'ordre de 6,0 mm et une profondeur de l'ordre de 7,0 mm. Each seal 4 ', 6' comprises a trunk 40, 60 which has a rectangular section with a total width of the order of 6.0 mm and a total thickness of the order of 10.0 mm; they are each intended to penetrate into a groove 34, 36, having a rectangular section with an identical width of the order of 6.0 mm and a depth of the order of 7.0 mm.

Le système d'aspiration 8 réalise une aspiration de la face extérieure 12 de la vitre 1 entre les deux joints 4', 6' pendant l'injection de la matière plastique dans la cavité de moulage 2.  The suction system 8 carries out a suction of the outer face 12 of the pane 1 between the two seals 4 ', 6' during the injection of the plastic into the molding cavity 2.

Selon l'invention, il est proposé d'utiliser un joint 4 tel que visible en figure 2 ou 3 ou 4, ou d'utiliser deux joints 4 et 6, tels que visibles en figure 2 ou 3 ou 4, à la place respectivement du joint 4' tel que visible en figure 1 ou des deux joints 4' et 6' tels que visibles en figure 1. According to the invention, it is proposed to use a seal 4 as visible in FIG. 2 or 3 or 4, or to use two seals 4 and 6, as visible in FIG. 2 or 3 or 4, instead respectively seal 4 'as visible in Figure 1 or two joints 4' and 6 'as visible in Figure 1.

Un joint 4, 6 selon l'invention est particulier en ce que le joint présente, lorsque ledit moule est ouvert, un rapport de largeur 1 sur épaisseur e qui est compris entre 1,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs.  A seal 4, 6 according to the invention is particular in that the seal has, when said mold is open, a ratio of width 1 to thickness e which is between 1.5 and 25.0 by integrating these values, or even between 2.0 and 25.0 by integrating these values, or even between 4.0 and 25.0 by integrating these values.

Le joint 4, 6 illustré en figure 2 présente en coupe transversale une forme générale plate avec une seule branche 41 s 'étendant latéralement sur une continuité de surface S du moule 30. Ce joint présente une largeur 1 comprise entre 2,0 et 10,0 mm, et de préférence encore comprise entre 3,0 et 8,0 mm ; ici précisément de 5,0 mm.  The seal 4, 6 illustrated in FIG. 2 has a generally flat cross-sectional shape with a single branch 41 extending laterally over a surface continuity S of the mold 30. This seal has a width 1 of between 2.0 and 10, 0 mm, and more preferably between 3.0 and 8.0 mm; here precisely 5.0 mm.

Le joint 4, 6 illustré en figure 3 présente en coupe transversale une forme générale de L avec un tronc 40 positionné dans une gorge 34 ménagée dans une partie de moule 30 et un seule branche 41 qui s'étend latéralement à partir du tronc 40 sur une continuité de surface S du moule 30. Ce joint présente une largeur 1 comprise entre 5,0 et 15,0 mm, et de préférence encore comprise entre 9,0 et 13,0 mm ; ici précisément de 11,0 mm pour un tronc présentant une largeur m de 6,0 mm et pour une épaisseur totale e de 10,0 mm.  The seal 4, 6 illustrated in FIG. 3 has a generally L-shaped cross section with a trunk 40 positioned in a groove 34 formed in a mold part 30 and a single branch 41 which extends laterally from the trunk 40 on a surface continuity S of the mold 30. This seal has a width 1 of between 5.0 and 15.0 mm, and more preferably between 9.0 and 13.0 mm; here precisely 11.0 mm for a trunk having a width m of 6.0 mm and for a total thickness e of 10.0 mm.

Le joint 4, 6 illustré en figure 4 présente en coupe transversale une forme générale de T avec un tronc 40 positionné dans une gorge 34 ménagée dans une partie de moule (30) et deux branches 41, 42 qui s'étendent chacune latéralement à partir du tronc 40 sur deux continuités de surface S du moule 30. Ce joint présente une largeur 1 comprise entre 10,0 et 20,0 mm, et de préférence encore comprise entre 12,0 et 18,0 mm ; ici précisément de 16,0 mm pour un tronc présentant une largeur m de 6,0 mm et pour une épaisseur totale e de 10,0 mm. Lorsque le moule est ouvert et que les joints 4, 6 ne sont pas compressés, la ou chaque branche 41, 42 s'étend latéralement sur une continuité de surface du moule 30 sur une distance comprise entre 3,0 et 8,0 mm ; ici précisément de 5,0 mm. The seal 4, 6 illustrated in FIG. 4 has a generally T-shaped cross section with a trunk 40 positioned in a groove 34 formed in a mold part (30) and two branches 41, 42 which each extend laterally from trunk 40 on two surface continuities S of the mold 30. This seal has a width 1 of between 10.0 and 20.0 mm, and more preferably between 12.0 and 18.0 mm; here precisely 16.0 mm for a trunk having a width m of 6.0 mm and for a total thickness e of 10.0 mm. When the mold is open and the seals 4, 6 are not compressed, the or each leg 41, 42 extends laterally over a surface continuity of the mold 30 over a distance of between 3.0 and 8.0 mm; here precisely 5.0 mm.

Lorsque le moule est ouvert et que les joints 4, 6 ne sont pas compressés, la ou chaque branche 41, 42 présente une hauteur h, mesurée à partir de la continuité de surface du moule 30, qui est comprise entre 0,5 et 8,0 mm, et de préférence encore comprise entre 1,0 et 6,0 mm ; ici précisément de 3,0 mm.  When the mold is open and the joints 4, 6 are not compressed, the or each branch 41, 42 has a height h, measured from the surface continuity of the mold 30, which is between 0.5 and 8 , 0 mm, and more preferably between 1.0 and 6.0 mm; here precisely 3.0 mm.

Grâce aux joint 4, 6 selon l'invention la vitre 1 est en contact d'une partie de moule (ici la partie de moule fixe 30) le long du bord b de la face extérieure 12 de la vitre qui s'étend de l'arête 14 au joint 4 (par exemple jusqu'à l'extrémité latérale du tronc 40 ou d'une branche 41) et présente une largeur comprise seulement entre 1,0 et 10,0 mm, voire entre 2,5 et 8,0 mm.  Thanks to the seal 4, 6 according to the invention the window 1 is in contact with a mold part (here the fixed mold portion 30) along the edge b of the outer face 12 of the window which extends from the edge 14 at the joint 4 (for example to the lateral end of the trunk 40 or of a branch 41) and has a width of only between 1.0 and 10.0 mm, or even between 2.5 and 8, 0 mm.

De préférence, lorsqu'un système d'aspiration 8 réalise une aspiration d'une face de la vitre 1 entre les deux joints pendant l'injection de la matière plastique dans la cavité de moulage 2, un des joints et de préférence les deux joints sont des joints 4 et 6 selon l'invention. Ainsi, de préférence chacun des joints a au moins une branche 41, 42 qui s'étend latéralement sur une continuité de surface du moule 30 et qui est au contact à la fois de la vitre 2 et de la partie de moule 30 lors la fermeture du moule 3 et pendant l'injection de la matière plastique dans ladite cavité de moulage 2.  Preferably, when a suction system 8 carries out a suction of a face of the pane 1 between the two seals during the injection of the plastic into the molding cavity 2, one of the seals and preferably the two seals are seals 4 and 6 according to the invention. Thus, preferably each of the seals has at least one branch 41, 42 which extends laterally on a surface continuity of the mold 30 and which is in contact with both the window 2 and the mold part 30 during closure. of the mold 3 and during the injection of the plastic into said molding cavity 2.

Chaque branche 41, 42 permet une meilleure répartition des efforts d'étanchéité en s'étend latéralement sur une continuité de surface de moule.  Each branch 41, 42 allows a better distribution of the sealing forces extends laterally on a mold surface continuity.

Dans le cas d'un joint présentant en coupe transversale une forme générale plate, il est possible de prévoir que ce joint est fixé à la continuité de surface S du moule par un moyen adhésif tel que de la colle ou un ruban adhésif double face.  In the case of a joint having a generally flat cross-sectional shape, it is possible to provide that this seal is fixed to the surface continuity S of the mold by an adhesive means such as glue or double-sided adhesive tape.

Ainsi, le contact entre les joints 4 et 6 et la vitre 1 est parfait tout au long de l'injection et aucune bavure ne se forme à l'endroit du contact entre l'arête de la vitre et le moule ; la finition du cordon profilé est parfaite et aucune reprise n'est nécessaire.  Thus, the contact between the joints 4 and 6 and the pane 1 is perfect throughout the injection and no burr is formed at the point of contact between the edge of the pane and the mold; the finish of the profiled bead is perfect and no recovery is necessary.

Sur une série d'environ 1000 vitrages mis en œuvre selon l'invention, il a été constaté un taux de rupture de la vitre d'environ 0,5 %, ce qui est particulière faible.  On a series of about 1000 glazings implemented according to the invention, it was found a glass breakage rate of about 0.5%, which is particularly low.

La présente invention est décrite dans ce qui précède à titre d'exemple. Il est entendu que l'homme du métier est à même de réaliser différentes variantes de l'invention sans pour autant sortir du cadre du brevet tel que défini par les revendications.  The present invention is described in the foregoing by way of example. It is understood that the skilled person is able to achieve different variants of the invention without departing from the scope of the patent as defined by the claims.

Claims

REVENDICATIONS 1. Procédé de moulage d'un cordon profilé au bord d'une vitre (1), dans lequel une matière plastique constitutive dudit cordon profilé est introduite dans une cavité de moulage (2), ladite cavité de moulage (2) étant délimitée pour partie par ladite vitre (1) et pour autre partie par des parois d'un moule (3) comportant au moins une partie fixe (30) de moule et une partie mobile (32) de moule qui est mobile par rapport à la partie fixe (30) de moule, lesdites parties de moule coopérant à l'état fermé du moule avec ladite vitre (1) pour former ladite cavité de moulage (2), ladite cavité de moulage (2) comportant un contact entre une partie de moule (30, 32) et une arête (14) de ladite vitre (2) et une partie de moule (30, 32) comportant au moins un joint (4) situé à proximité dudit contact et en dehors de ladite cavité de moulage (2), ledit joint (4) présentant, vu en coupe transversale, une largeur totale (1) qui est au contact de ladite vitre (1) lorsque ledit moule (3) est fermé et une épaisseur totale (e), caractérisé en ce que ledit joint (4) présente, lorsque ledit moule (3) est ouvert, un rapport de largeur (1) sur épaisseur (e) qui est compris entre 1,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs. A method of molding a profiled bead at the edge of a pane (1), wherein a plastic material constituting said profiled bead is introduced into a molding cavity (2), said molding cavity (2) being delimited to partly by said window (1) and partly by walls of a mold (3) having at least one fixed mold part (30) and a movable mold part (32) movable with respect to the fixed part Mold member (30), said mold portions cooperating in the closed state of the mold with said pane (1) to form said molding cavity (2), said mold cavity (2) having a contact between a mold part ( 30, 32) and an edge (14) of said pane (2) and a mold part (30, 32) having at least one seal (4) located near said contact and outside said molding cavity (2) , said seal (4) having, seen in cross section, a total width (1) which is in contact with said window (1) when said m oule (3) is closed and a total thickness (e), characterized in that said seal (4) has, when said mold (3) is open, a width ratio (1) thickness (e) which is between 1.5 and 25.0 by integrating these values, or even between 2.0 and 25.0 by integrating these values, or even between 4.0 and 25.0 by integrating these values. 2. Procédé de moulage selon la revendication 1, caractérisé en ce que ledit joint (4) présente en coupe transversale une forme générale plate avec une seule branche (41) s'étendant latéralement sur une continuité de surface dudit moule (30, 32), ou une forme générale de L avec un tronc (40) positionné dans une gorge (34) ménagée dans une partie de moule (30, 32) et un seule branche (41) s'étendant latéralement sur une continuité de surface dudit moule (30, 32), ou une forme générale de T avec un tronc (40) positionné dans une gorge (34) ménagée dans une partie de moule (30, 32) et deux branches (41, 42) s'étendant latéralement chacune de chaque côté dudit tronc (40) sur une continuité de surface dudit moule (30, 32).  2. Molding method according to claim 1, characterized in that said seal (4) has in cross section a generally flat shape with a single leg (41) extending laterally on a surface continuity of said mold (30, 32). , or a general L-shape with a trunk (40) positioned in a groove (34) in a mold part (30, 32) and a single leg (41) extending laterally on a surface continuity of said mold ( 30, 32), or a general T-shape with a trunk (40) positioned in a groove (34) in a mold portion (30, 32) and two legs (41, 42) extending laterally each of side of said trunk (40) on a surface continuity of said mold (30, 32). 3. Procédé de moulage selon la revendication 1 ou 2, caractérisé en ce que ladite vitre (1) est en contact d'une partie de moule (30, 32) le long d'un bord (b) de la face extérieure (12) de la vitre qui s'étend de ladite arête (14) audit joint (4) et qui présente une largeur comprise entre 1,0 et 10,0 mm, voire entre 2,5 et 8,0 mm.  3. Molding method according to claim 1 or 2, characterized in that said pane (1) is in contact with a mold part (30, 32) along an edge (b) of the outer face (12). ) of the window which extends from said edge (14) to said seal (4) and which has a width of between 1.0 and 10.0 mm, or even between 2.5 and 8.0 mm. 4. Procédé de moulage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ladite cavité de moulage (2) dudit cordon profilé ne comporte aucun joint. 4. Molding method according to any one of claims 1 to 3, characterized in that said molding cavity (2) of said profiled bead has no seal. 5. Procédé de moulage selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'un système d'aspiration (8) réalise une aspiration d'une face de la vitre (1) dans une zone latérale entre deux joints (4, 6) pendant l'injection de ladite matière plastique dans ladite cavité de moulage (2), les deux joints (4, 6) présentant chacun, lorsque ledit moule (3) est ouvert, un rapport de largeur (1) sur épaisseur (e) qui est compris entre 1 ,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs. 5. Molding method according to any one of claims 1 to 4, characterized in that a suction system (8) performs suction of a face of the pane (1) in a lateral area between two joints ( 4, 6) during the injection of said plastic material into said molding cavity (2), the two seals (4, 6) each having, when said mold (3) is open, a width ratio (1) on a thickness (e) which is between 1, 5 and 25.0 integrating these values, or even between 2.0 and 25.0 integrating these values, or even between 4.0 and 25.0 by integrating these values. 6. Dispositif (10), notamment pour la mise en œuvre du procédé selon l'une quelconque des revendications 1 à 5, pour le moulage d'un cordon profilé au bord d'une vitre (1), dans lequel une matière plastique constitutive dudit cordon profilé est introduite dans une cavité de moulage (2), ladite cavité de moulage (2) étant délimitée pour partie par ladite vitre (1) et pour autre partie par des parois d'un moule (3) comportant au moins une partie fixe (30) de moule et une partie mobile (32) de moule qui est mobile par rapport à la partie fixe (30) de moule, lesdites parties de moule coopérant à l'état fermé du moule avec ladite vitre (1) pour former ladite cavité de moulage (2), ladite cavité de moulage (2) comportant un contact entre une partie de moule (30, 32) et une arête de ladite vitre (2) et une partie de moule (30, 32) comportant au moins un joint (4) situé à proximité dudit contact et en dehors de ladite cavité de moulage (2), ledit joint (4) présentant, vu en coupe transversale, une largeur totale (1) qui est au contact de ladite vitre (1) lorsque ledit moule (3) est fermé et une épaisseur totale (e), caractérisé en ce que ledit joint (4) présente, lorsque ledit moule (3) est ouvert, un rapport de largeur (1) sur épaisseur (e) qui est compris entre 1,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs.  6. Device (10), in particular for implementing the method according to any one of claims 1 to 5, for molding a profiled bead at the edge of a window (1), in which a constituent plastics material. said profiled bead is introduced into a molding cavity (2), said molding cavity (2) being delimited in part by said pane (1) and for other part by walls of a mold (3) comprising at least a part fixed mold member (30) and a movable mold part (32) which is movable with respect to the mold fixed part (30), said mold parts cooperating in the closed state of the mold with said glass piece (1) to form said molding cavity (2), said molding cavity (2) having a contact between a mold part (30, 32) and an edge of said pane (2) and a mold part (30, 32) comprising at least a seal (4) located near said contact and outside said molding cavity (2), said seal (4) having, seen in cross section, a total width (1) which is in contact with said window (1) when said mold (3) is closed and a total thickness (e), characterized in that said seal (4) has, when said mold (3) is open, a ratio of width (1) to thickness (e) which is between 1.5 and 25.0 integrating these values, or even between 2.0 and 25.0 integrating these values, or even between 4.0 and 25.0 by integrating these values. 7. Dispositif (10) de moulage selon la revendication 6, caractérisé en ce que ledit joint (4) présente en coupe transversale une forme générale plate avec une seule branche (41) s 'étendant latéralement sur une continuité de surface dudit moule (30, 32), ou une forme générale de L avec un tronc (40) positionné dans une gorge (34) ménagée dans une partie de moule (30, 32) et une seule branche (41) s'étendant latéralement sur une continuité de surface dudit moule (30, 32), ou une forme générale de T avec un tronc (40) positionné dans une gorge (34) ménagée dans une partie de moule (30, 32) et deux branches (41, 42) s'étendant latéralement chacune de chaque côté dudit tronc (40) sur une continuité de surface dudit moule (30, 32). 7. Apparatus (10) molding according to claim 6, characterized in that said seal (4) has a generally flat cross-sectional shape with a single leg (41) extending laterally on a surface continuity of said mold (30). , 32), or a general L shape with a trunk (40) positioned in a groove (34) in a mold portion (30, 32) and a single leg (41) extending laterally on a surface continuity said mold (30, 32), or a general T-shape with a trunk (40) positioned in a groove (34) in a mold portion (30, 32) and two laterally extending legs (41, 42). each on each side of said trunk (40) on a surface continuity of said mold (30, 32). 8. Dispositif (10) de moulage selon la revendication 7, caractérisé en ce que ladite branche (41, 42), ou lesdites branches, présente(nt) une hauteur (h), mesurée à partir de ladite continuité de surface dudit moule (30, 32), qui est comprise entre 0,5 et 8,0 mm en intégrant ces valeurs, et de préférence encore qui est comprise entre 1,0 et 6,0 mm en intégrant ces valeurs. 8. Device (10) for molding according to claim 7, characterized in that said leg (41, 42), or said branches, has (s) a height (h), measured from said surface continuity of said mold ( 30, 32), which is between 0.5 and 8.0 mm by integrating these values, and more preferably between 1.0 and 6.0 mm by integrating these values. 9. Dispositif (10) de moulage selon la revendication 7 ou 8, caractérisé en ce que ladite branche (41, 42), ou lesdites branches, présentent) une largeur (1) qui est comprise entre 2,0 et 10,0 mm en intégrant ces valeurs.  9. Device (10) for molding according to claim 7 or 8, characterized in that said leg (41, 42), or said branches, have) a width (1) which is between 2.0 and 10.0 mm by integrating these values. 10. Dispositif (10) de moulage selon l'une quelconque des revendications 7 à 9, caractérisé en ce qu'au moins une branche (41, 42) comporte au moins un bossage (43) avec une pointe de bosse orientée en direction de ladite vitre (2) et ladite pointe de bosse qui s'étend selon un angle a de préférence de l'ordre de 120° plus ou moins 10°.  10. Device (10) for molding according to any one of claims 7 to 9, characterized in that at least one branch (41, 42) comprises at least one boss (43) with a bump tip oriented in the direction of said window (2) and said hump tip extending at an angle preferably of the order of 120 ° plus or minus 10 °. 11. Dispositif (10) de moulage selon l'une quelconque des revendications 6 à 10, caractérisé en ce qu'un système d'aspiration (8) est situé dans une partie de moule (30, 32) entre deux joints (4, 6), les deux joints (4, 6) présentant chacun, lorsque ledit moule (3) est ouvert, un rapport de largeur (1) sur épaisseur (e) qui est compris entre 1,5 et 25,0 en intégrant ces valeurs, voire entre 2,0 et 25,0 en intégrant ces valeurs, voire entre 4,0 et 25,0 en intégrant ces valeurs.  11. Device (10) for molding according to any one of claims 6 to 10, characterized in that a suction system (8) is located in a mold part (30, 32) between two seals (4, 6), the two seals (4, 6) each having, when said mold (3) is open, a ratio of width (1) to thickness (e) which is between 1.5 and 25.0 by integrating these values. or between 2.0 and 25.0 by integrating these values, or even between 4.0 and 25.0 by integrating these values.
PCT/FR2017/051697 2016-06-27 2017-06-26 Method for moulding a flush profiled bead on a glazing member and moulding device for said method Ceased WO2018002502A1 (en)

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FR1655958 2016-06-27
FR1655958A FR3052996B1 (en) 2016-06-27 2016-06-27 METHOD FOR MOLDING A PROFILE CORD FLASHING ON A GLASS ELEMENT AND MOLDING DEVICE THEREFOR.

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FR3052996B1 (en) 2018-07-13
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