EP0837212B1 - Procédé et dispositif pour le remplissage automatique des vitrages isolants avec un gaz différent de l'air - Google Patents

Procédé et dispositif pour le remplissage automatique des vitrages isolants avec un gaz différent de l'air Download PDF

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Publication number
EP0837212B1
EP0837212B1 EP97117761A EP97117761A EP0837212B1 EP 0837212 B1 EP0837212 B1 EP 0837212B1 EP 97117761 A EP97117761 A EP 97117761A EP 97117761 A EP97117761 A EP 97117761A EP 0837212 B1 EP0837212 B1 EP 0837212B1
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EP
European Patent Office
Prior art keywords
panels
gas
filling
panel
ejecting
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.)
Expired - Lifetime
Application number
EP97117761A
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German (de)
English (en)
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EP0837212A2 (fr
EP0837212A3 (fr
Inventor
Fortunato Vianello
Dino Moschini
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For El Base di Vianello Fortunato and C SNC
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For El Base di Vianello Fortunato and C SNC
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Priority to SI9730736T priority Critical patent/SI0837212T1/sl
Publication of EP0837212A2 publication Critical patent/EP0837212A2/fr
Publication of EP0837212A3 publication Critical patent/EP0837212A3/fr
Application granted granted Critical
Publication of EP0837212B1 publication Critical patent/EP0837212B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677—Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
    • E06B3/6775—Evacuating or filling the gap during assembly

Definitions

  • the present application relates to an automatic procedure and an automatic device for filling panels of insulating glass with a gas different from the air.
  • a gas different from the air is employed for improving thermal and acoustic insulation properties of panels, as well as for improving other properties connected with the peculiar characteristics of the employed gas.
  • the first techniques are based on either the principle of measuring the gas flow and the introduction time of the same or the principle of measuring the concentration of either the gas or the residual oxygen inside the panel of insulating glass during the introduction of the gas itself.
  • the second techniques usually resort to the method of measuring the concentration of either the gas or the residual oxygen inside the panel of insulating glass during the introduction of the gas itself until the desired gas concentration is achieved.
  • the sensitive increase in demand of panels of insulating glass filled with gas shall necessarily direct the producers of panels of insulating glass to the employment of the sole automatic machines or at least of the semiautomatic ones and, above all, to the selection of those automatic machines that, all the other characteristics being equal, have a limited consumption of gas for the filling of the same panel like the one which is referred to in the present application.
  • the diffusion has grown of gases having more and more peculiar characteristics, finer characteristics and therefore more expensive characteristics (even more than two orders of magnitude expensive), whereby a need has grown to use methods and machines of filling that minimize the consumption of gas.
  • the speed of the gas during the filling is in LAMINAR regime.
  • Argon When Argon is employed (which was the most diffused when the gas filling technology of panels of insulating glass was originally born) the problem of gas waste resulted economically bearable, but the employment of nobler (and therefore more expensive) gases for achieving better physical characteristics of the panels has made the incidence of costs unbearable. Suffice it to consider the fact that Argon has a market price of about 10 Italian Liras/Nliter (where Nliter is the abbreviation for Normal-liter, i.e. a unit of mass for gases equal to the mass of 10 -3 m 3 of gas at a pressure of 101325 Pa and at a standard temperature), while Krypton costs as much as 1000 Italian Liras/Nliter and Xenon hits 6000 Italian Liras/Nliter.
  • Italian Patent no. 1.142.062 it substantially discloses a chamber, provided with seals, in order to contain the panel of insulating glass which is not yet assembled with its components, i.e. glasses and spacer frame, inside which chamber the gas is fluxed, which accordingly occupies also the inside of the insulating glass panel before the assembling phase that is carried out in the same machine.
  • the drawbacks of this system which works in a turbulent regime, are the elevated consumption of gas and the non-achievement of a high concentration of gas (or the one is improved to the detriment of the other).
  • a quantity of additional gas must be used also for the saturation of the volume of the machine chamber which is not occupied by the glass and a further quantity of gas is lost in the transit phases for the entry and the exit of the panel of insulating glass.
  • EP-A-0 267 647 the main claim concerns the concept of using means acting on the external surfaces of the panel, for example planes of a press, to oppose the overpressure that is established inside the panel during the phase of gas introduction,; in fact, even a small overpressure interesting a very wide surface involves considerable efforts to the extent that either the separation is caused of the sheets from the spacer frame to which the glass sheets are bound through the primary sealant or the explosion of the same sheets is even caused.
  • this technique introduces the additional problem of requiring at least two holes (one located in the bottom part and the other located in the top part of the panel) crossing both the walls of the spacer frame.
  • European Patent Application no. EP-A-0 323 333 it deals with a device similar to the previous one except that, for the optimization of both the mechanics of the machine and the working cycle of the process, the holes for the introduction of gas and for the discharge of the mixture air-gas are displaced in the lower part of one of the sides (generally the exit side) of the spacer frame; it is accordingly avoided the time for the translation of the mechanisms that have to operate in correspondence of the discharge hole.
  • the turbulence of the process is even more emphasized and, even though the process globally takes place in less time, the consumption of gas results among the highest ones with respect to the other prior art systems.
  • European Patent Application no. EP-A-0 444 391 in order to fill the inside of the insulating glass panel, one of the two sheets, while they are kept between the clamping boards of the press, is pulled out from the spacer frame in correspondence of an edge of the sheet, due to a portion of the same board of the press provided with suckers. In such a way a slit is created through which the operations of introduction of gas and discharge of the mixture air-gas are carried out.
  • This device also operates in a regime of turbulent flow with the drawbacks already described herein above.
  • the sole advantage of this method resides in that the internal part of the spacer frame is kept sound, thus resulting in a valuable aesthetic aspect. Its drawback, besides the known problem of turbulence, is tied to the need of elastically deforming one of the two sheets which constitute the panel of insulating glass, which need cannot be met with all typologies of glass, for example those having a high thickness.
  • European Patent Application no. EP-A-0 603 148 the process of filling the panel of insulating glass with gas takes place, always inside the press, with one of the two glass sheets leant against the spacer frame only in correspondence of the horizontal top side and of part of the vertical sides for the portion along which the elasticity of the glass allows the relative deformation of the same.
  • the gas is introduced from under the spacer frame and the mixture air-gas is expelled through the portion of the vertical sides where the glass is detached from the spacer frame.
  • Aim of the present invention is to solve the underlined technical problems and to eliminate the drawbacks involved in the prior art, by contriving an automatic procedure and an automatic device for filling panels of insulating glass with gas different from air which, differently from the known automatic corresponding methods and machines, provide for a notable cheapness as regards the consumption of the filling gas and which, with respect to Italian Patent application no. TV94A000125 and to the corresponding European Patent application no. EP-A-0 715 053, allow to provide a device having better functionality and reliability and which further reduce the consumption of gas and allows to take full advantage of the laminar-flow filling technique disclosed in EP-A-0 715 053, speeding up the operation of the machine.
  • Another important object is to provide a device which, even though it is inserted in lines for the automatic production of insulating glass panels, meets the productivity of the same lines, allowing at the same time to achieve an acceptable cheapness in the consumption of gas and an achievement of an elevated concentration of gas inside the finished insulating panel and, last but not least, preservation of such obtained concentration over time.
  • FIG. 1 is a cross-sectional view of the filling station of the device, according to the invention.
  • a collector-container which is able to receive, to contain and to distribute at least two (typically, but not exclusively, eight to ten) panels of insulating glass into respective slots.
  • the innovative and inventive concept of the method according to the invention consists in using a free selection logic rather than a sequential selection logic, in order to receive in input the panels of insulating glass on one of the available slots of the collector-container, to contain the panels of insulating glass in the same collector-container during the phase of filling with gas, to output the panels of insulating glass to the following station from such collector container, for example to the station which carries out the process of automatic sealing of the peripheral edge of the insulating glass panel, in the manufacturing line for the insulating glass panel, according to the logic required by the line itself.
  • said logic can be determined from one of the following criteria: 1) ejecting from the collector-container the first finished panel, in order to minimize by far the waiting times for the following station; 2) ejecting, as far as they are available, the panels having spacer frames of the same thickness, in order not to change the manufacturing parameters of the downstream automatic sealing machine; 3) ejecting, as far as they are available, panels classified according to customer; 4) giving priority to small pieces in order not to have too many glass panels which have been already finished as regards the filling phase, but which are still to be sealed in the openings for introduction of the gas and expulsion of the air, should the kind of machine provide for a separate location for such sealing, and which are therefore held in a filling status, even though with a reduced flow of gas; 5) providing priority at the request of the operator; 6) providing additional uses of the collector-container, in addition to its main function of filling the panels with gas, as an accumulation and waiting container, should the downstream processing stations be temporarily inactive or busy.
  • the machine according to the invention particularly comprises a fixed horizontal base frame 1 on which a mobile counter-frame 2 is mounted so as to slide in a transverse direction with respect to the input conveying direction of the panels.
  • the counter-frame 2 corresponds to the above-mentioned collector-container and comprises, on its upper side, at least two (typically from eight to ten) backs 3, on which the panels of insulating glass 4 lean when they are conveyed into the counter-frame 2.
  • the backs are vertical or slightly sloped with respect to the vertical plane, i.e. they are directed substantially perpendicularly with respect to the ground.
  • the same panels are conveyed into said backs by means of conveying rollers 5 which, in addition to a rotatory motion, are also provided with an alternating upward/downward movement (with respect to the ground) along the same backs 3 by means of a suitable mechanisms globally indicated with 6.
  • Such alternating movement allows to receive the input panel when the rollers are in the raised position, or to evacuate the panel in exit, when the same rollers 5 are in the lowered position, so as to put down the panel on feet-supports 7, which are displaced with an appropriate distribution in the lower part of the each back 3 and rigidly connected with the respective back, as shown in figure 1.
  • nozzle-holder carriages are displaced for the introduction of the gas through a pre-drilled (in the same machine) hole on the external face of the bottom side of the spacer frame, while probe-holder carriages are located along guides 9, the probe being inserted, through an automatic device, into the pre-drilled holes located in the upper portion of a lateral side of the spacer frame.
  • holes are respectively built as follows; one hole is built on the lower side of the spacer frame through an automatic device located immediately upstream of the collector-container, while the other hole is built on a lateral side of the spacer frame either in the same automatic machine that manufactures the spacer frame by folding and joining straight shapes, or manually or semi-automatically by means of a drilling device, in the case of spacer frames having sides precisely cut and joined at the apexes through inserts of a metallic or plastic material.
  • zone 10 the devices are respectively located for centering the nozzle-holder carriages and for sealing of the hole at the bottom side of the spacer frame and the devices for centering the probe-holder carriages and for sealing the hole at the lateral side of the spacer frame.
  • collector-container An important advantage of the collector-container is to be able to increase the available filling time for the filling station by a factor equal to the number of compartments or slots of the collector-container, with respect to the time of the most critical station of the production line of panels of insulating glass.
  • the above cited prior art gives to the gas filling operation a time far shorter than the time of the most critical station of the line, since the machine that carries out the filling with gas is the same one that has also to carry out the joining and the pressing operations of the components forming the panel of insulating glass.
  • the automatic procedure and the automatic device according to the present invention object of the present application can operate with a gas flow in a laminar regime while all the other automatic procedures and automatic devices of the prior art, are forced to operate in a (faster) turbulent regime for time reasons.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (10)

  1. Dispositif automatique pour remplir, avec un gaz autre que de l'air, des vitrages isolants (4) du type comportant deux feuilles de verre séparées l'une de l'autre par un cadre d'espacement,
    ledit cadre d'espacement comportant dans sa face inférieure un distributeur à microtrou pour le remplissage de la chambre formée entre lesdites feuilles de verre à l'aide dudit gaz selon un écoulement laminaire en introduisant ledit gaz dans un trou préalablement percé situé dans la face extérieure de ladite face inférieure, le cadre d'espacement comportant en outre un trou de refoulement pour refouler l'air,
    ledit dispositif comportant des postes amont pour réunir les feuilles de verre aux cadres d'espacements respectifs à l'aide de cordons latéraux d'un agent d'étanchéité primaire et pour acheminer les vitrages (4) ainsi formés jusqu'à un poste de remplissage pour remplir les vitrages (4) à l'aide dudit gaz,
    caractérisé en ce que le poste de remplissage comporte un bac de regroupement (2) destiné à recevoir une pluralité de ces vitrages (4) et à les renvoyer dans des postes de traitement en aval dans un ordre défini par une logique de libre choix, ledit bac de regroupement comprenant une pluralité de supports (3) définissant une pluralité de rainures destinées à recevoir et à supporter des vitrages respectifs (4) dans une position sensiblement verticale par rapport au sol,
    le bac de regroupement (2) étant monté de manière coulissante sur un châssis (1) de façon à pouvoir coulisser dans une direction transversale par rapport à la direction d'introduction des vitrages (4) afin de recevoir une succession de vitrages d'entrée et de délivrer une succession de vitrages de sortie remplis de gaz,
    chaque rainure comportant dans son fond (8) un chariot porte-injecteur destiné à supporter un injecteur pour introduire ledit gaz dans le vitrage (4) placé dans la rainure, à travers ledit trou préalablement percé du cadre d'espacement,
    chaque support (3) comportant des guides (9) servant à guider un chariot porte-sonde comportant une sonde pour analyser l'air et le mélange éjectés refoulés via ledit trou de refoulement pendant ledit remplissage ;
    ledit poste de remplissage comportant en outre un moyen pour sélectionner les rainures disponibles pour recevoir en entrée un nouveau vitrage et pour éjecter un vitrage rempli, suivant ladite logique de libre choix.
  2. Dispositif automatique selon la revendication 1, caractérisé en ce que ladite éjection est choisie dans le groupe comprenant :
    a) une éjection du premier vitrage fini depuis le bac de regroupement, afin de limiter fortement les temps d'attente pour le poste suivant ;
    b) éjecter, dès qu'ils sont disponibles, les vitrages ayant des cadres d'espacements de la même épaisseur ;
    c) éjecter, dès qu'ils sont disponibles, des vitrages placés par client ;
    d) éjecter les vitrages en donnant la priorité aux petits vitrages ;
    e) éjecter les vitrages en donnant la priorité au choix de l'opérateur.
  3. Dispositif automatique selon la revendication 1, caractérisé en ce que chaque support (3) comporte une roulette qui peut être approchée automatiquement du vitrage afin de le détacher du support (3) et de centrer le trou de refoulement du vitrage par rapport à la sonde.
  4. Dispositif automatique selon la revendication 1, caractérisé en ce que ledit injecteur a une forme conique conçue pour obtenir un raccordement étanche au gaz avec la paroi annulaire du trou préalablement percé dans la face inférieure du cadre d'espacement.
  5. Dispositif automatique selon la revendication 1, caractérisé en ce que les sondes du poste de remplissage sont connectées à un analyseur unique servant à analyser l'air refoulé ou le mélange de gaz et d'air refoulé, ledit analyseur étant commandé par un programmateur logique séquentiel pour examiner de manière cyclique toutes les rainures du bac de regroupement.
  6. Dispositif automatique selon la revendication 5, caractérisé en ce que ledit analyseur est choisi dans le groupe comprenant des analyseurs du type paramagnétique et des analyseurs à oxyde de zirconium.
  7. Dispositif automatique selon la revendication 1, caractérisé en ce qu'il comprend un calculateur de commande de processus pour piloter le dispositif, mettant en oeuvre les fonctions d'interface utilisateur, de diagnostic et de statistiques, et servant à représenter de manière synoptique l'état de remplissage de chaque vitrage en verre isolant.
  8. Dispositif automatique selon la revendication 1, caractérisé en ce que chaque système d'introduction de gaz est doté d'une valve de sûreté individuelle afin d'éviter les surpressions à l'intérieur de la chambre du vitrage en verre isolant.
  9. Procédé pour remplir automatiquement, à l'aide d'un gaz autre que l'air, des vitrages (4) en verre isolant du type comprenant deux feuilles de verre séparées l'une de l'autre par un cadre d'espacement et comportant un trou de refoulement pour refouler l'air, comprenant les étapes consistant à :
    munir ledit cadre d'espacement, sur sa face inférieure, d'un distributeur à microtrou ;
    réunir les feuilles de verre avec les cadres d'espacement respectifs à l'aide de cordons latéraux d'un agent d'étanchéité primaire ;
    acheminer les vitrages (4) ainsi formés jusqu'à un poste de remplissage pour remplir les vitrages (4) à l'aide dudit gaz ;
    caractérisé en ce qu'il comprend les étapes consistant à, dans un bac de regroupement (2),
    prévoir une pluralité de supports (3) définissant une pluralité de rainures destinées à recevoir et à supporter des vitrages respectifs (4) dans une position sensiblement verticale par rapport au sol ;
    recevoir une pluralité de ces vitrages en faisant coulisser ledit bac de regroupement dans une direction transversale par rapport à la direction d'introduction des vitrages (4) ;
    remplir avec ledit gaz la chambre de chaque vitrage formée entre lesdites feuilles de verre à l'aide dudit gaz suivant un écoulement laminaire, en introduisant ledit gaz dans un trou préalablement percé situé dans ladite face inférieure, à l'aide d'un injecteur supporté par un chariot porte-injecteur présent dans la région du fond (8) de chaque rainure ;
    analyser l'air et le mélange éjectés refoulés via ledit trou de refoulement pendant ledit remplissage, à l'aide d'une sonde supportée par un chariot porte-sonde guidé par des guides respectifs (9) présents sur chaque support (3) ;
    renvoyer lesdits panneaux (4) dans des postes de traitement en aval dans un ordre défini par une logique de libre choix.
  10. Procédé selon la revendication 9, caractérisé en ce que ladite éjection est choisie dans le groupe comprenant :
    a) une éjection du premier vitrage fini depuis le bac de regroupement, afin de limiter fortement les temps d'attente pour le poste suivant ;
    b) éjecter, dès qu'ils sont disponibles, les vitrages comportant des cadres d'espacement de la même épaisseur ;
    c) éjecter, dès qu'ils sont disponibles, des vitrages classés par client ;
    d) éjecter les vitrages en donnant la priorité aux petits vitrages ;
    e) éjecter les vitrages en donnant la priorité au choix de l'opérateur.
EP97117761A 1996-10-17 1997-10-14 Procédé et dispositif pour le remplissage automatique des vitrages isolants avec un gaz différent de l'air Expired - Lifetime EP0837212B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730736T SI0837212T1 (sl) 1996-10-17 1997-10-14 Postopek in priprava za avtomatsko polnjenje izolirnih sip s plinom, kije razlicen od zraka

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTV960129 1996-10-17
IT96TV000129A IT1288674B1 (it) 1996-10-17 1996-10-17 Procedimento e dispositivo automatici per la polmonazione di pannelli di vetro isolante con gas diverso dall'aria

Publications (3)

Publication Number Publication Date
EP0837212A2 EP0837212A2 (fr) 1998-04-22
EP0837212A3 EP0837212A3 (fr) 1998-05-13
EP0837212B1 true EP0837212B1 (fr) 2006-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117761A Expired - Lifetime EP0837212B1 (fr) 1996-10-17 1997-10-14 Procédé et dispositif pour le remplissage automatique des vitrages isolants avec un gaz différent de l'air

Country Status (6)

Country Link
EP (1) EP0837212B1 (fr)
AT (1) ATE320541T1 (fr)
DE (1) DE69735456T2 (fr)
ES (1) ES2258274T3 (fr)
IT (1) IT1288674B1 (fr)
SI (1) SI0837212T1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307403A1 (de) * 1993-03-09 1994-09-15 Cta Composite Tech Autom Gmbh Verfahren und Vorrichtung zum Einrichten, Gasfüllen und Verpressen von Einzelscheiben und/oder bereits vorgefertigten Scheibenanordnungen als zwei Komponenten bei der Herstellung von Isolierglasscheiben
IT1273916B (it) * 1994-10-28 1997-07-11 For El Base Di Vianello Fortun Procedimento e dispositivo automatici per la polmonazione di pannelli di vetro isolante.

Also Published As

Publication number Publication date
ES2258274T3 (es) 2006-08-16
ATE320541T1 (de) 2006-04-15
EP0837212A2 (fr) 1998-04-22
ITTV960129A1 (it) 1998-04-17
SI0837212T1 (sl) 2006-08-31
IT1288674B1 (it) 1998-09-23
DE69735456D1 (de) 2006-05-11
DE69735456T2 (de) 2006-09-28
EP0837212A3 (fr) 1998-05-13

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