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EP0846525A1 - Method for edge grinding of glass plates - Google Patents

Method for edge grinding of glass plates Download PDF

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Publication number
EP0846525A1
EP0846525A1 EP97117721A EP97117721A EP0846525A1 EP 0846525 A1 EP0846525 A1 EP 0846525A1 EP 97117721 A EP97117721 A EP 97117721A EP 97117721 A EP97117721 A EP 97117721A EP 0846525 A1 EP0846525 A1 EP 0846525A1
Authority
EP
European Patent Office
Prior art keywords
sheet
rollers
overflow
tool
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97117721A
Other languages
German (de)
French (fr)
Inventor
Valerio Rosso
Oriano Bertoncello
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.)
Castelmec Sas Di Rosso Valerio & C
Original Assignee
Castelmec Sas Di Rosso Valerio & C
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 Castelmec Sas Di Rosso Valerio & C filed Critical Castelmec Sas Di Rosso Valerio & C
Publication of EP0846525A1 publication Critical patent/EP0846525A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • B24B41/053—Grinding heads for working on plane surfaces for grinding or polishing glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories
    • B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/0084—Other grinding machines or devices the grinding wheel support being angularly adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass

Definitions

  • the invention relates to a device for overflowing, by an abrasion operation, the edges of the sheets of glass according to the preamble of claim 1.
  • Opposite the wall is the device that performs the coating portion removal operation adjacent to the edges of the sheet and which is movable in translation on vertical guides with possibility of moving back and forth.
  • a first known process for removing the coating of the metal layer consists of the use of burners directed to the edge of the glass sheet but this system is limited because only a small number of the coatings can be removed using the burners.
  • Another process which serves as well for removal of the metal layer only for more operations general cleaning of the edges of a glass sheet, provides for the use of one or more abrasive wheels mounted on a vertically sliding support, as well that can be turned 90 ° around an axis perpendicular to the sheet itself, and which goes through the point of contact between the latter and the tool in the working position.
  • a first drawback derives from the fact that the grinding wheel work phase must exert pressure, although minimal, on the glass sheet to perform the abrasion action and whereas, in the case of thin glass sheets, this may cause cracking, otherwise the rupture of this last.
  • a second drawback derives from the fact that the consumption of the grinding wheel during the working phase requires the use of a device to compensate for wear of the abrasive layer so that the grinding wheel is always in contact and exerting the right pressure against the surface of the glass sheet to be treated.
  • the first type of drawback has been partially eliminated by making in the support wall of the glass sheet, to the right of the work area, a vertical slot on which we inserted a cylinder which turns around its axis vertical and which has the function of regulating the pressure exerted by the tool in the working phase on the element to be worked.
  • the object of the present invention is to provide a device for edge abrasion machining, commonly called overflowing, of a sheet of glass having for first purpose of ensuring that the abrasion action is not concentrated in one point but on the contrary, it is extended over a surface, even if it is limited, in order to reduce the tool pressure during the working phase and avoid breaking the sheet.
  • Another goal is to be able to use a tool abrasive of a reduced cost but also of a long duration of life and which can be replaced once fully worn, in a simple way and in seconds.
  • rollers which support the strip have their axis of rotation parallel to the work sheet and are anchored on a plate arranged perpendicular to said sheet, which plate is in turn supported by a group which allows it to run vertically in both sense, as well as rotations at angles of 90 ° around of an axis perpendicular to the same sheet to be worked, of way to expose to the abrasion operation as well the horizontal edges as the vertical edges of the latter.
  • the abrasive strip which constitutes the novelty of the invention is driven and held in tension by three rollers, one of which, of larger diameter, motorized roller, while the other two, arranged in superposition, serve to keep the part of the strip which will be placed in contact with the sheet of glass.
  • one of the two rollers which form the pair of rollers provided for belt tension is removable, so that its spacing out of position working eliminates tension on the abrasive belt and allows to remove it and replace it with a new band.
  • At least one of these small rollers provided a return spring, acts as a feeler, i.e. that it detects the presence of the glass sheet on the roller conveyor and, in the correct position, stops the approximation stroke of the plate which supports the strip abrasive at the start of each work cycle.
  • the device described above which includes essentially the abrasive belt, the rollers circulation and support plate, can be anchored in fixed position to the machine structure. In this way, it will be possible to work only one region of edges of the glass sheet, for example, the region lower horizontal.
  • the glass sheet is moved on conveyors with rollers or conveyor belts of known type, arranged at the base of the wall of support and, moreover, the whole system, because it must operate fully automatically, will be equipped with photocells, proximity switches and analogs capable of regulating the operation of the assembly of the installation.
  • the glass sheet 1 metallized is supported on the support wall 2, substantially vertical, and on the rotating cylinder 3, placed opposite the work tool, which will be described below and it is driven by rollers 4 placed below of said wall.
  • the movement of the overflow group 5 upwards or down is the result of the movement of the carriage 6, connected by means of a chain 8, to the deflection rollers 9 actuated by a motor not shown in the figure.
  • the entire overflow group 5 consists of a support plate 10, anchored to the carriage 6, provided with a shaft projection 11 on which a bearing block 12 is wedged which supports the overflow tool 13.
  • the overflow tool 13 which represents the novelty of the invention is essentially constituted by a strip abrasive 14, with closed profile, kept taut and placed rotation by means of three rollers 15, 16 and 17 placed at inside the profile of said strip and supported by the plate 18, itself vertical and perpendicular to the glass sheet 1.
  • the first roller 15, of larger diameter, has for function of circulating the abrasive belt 14, and it is actuated by means of the belt 19 by the motor electric 20 supported by block 12.
  • the two end rollers 16 and 17, mad and placed in the front position, near sheet 1, have for function of delimiting the portion 21 of the abrasive strip which will come into contact with the surface of the sheet itself.
  • the roller 16 is mounted directly on the plate support 18 while the roller 17 spins at the end a lever 22, which is in turn articulated on said plate (see figure 2).
  • the push spring 23 acts on the lever 22 so so that the corresponding roller 17 is always in the maximum tension position of the abrasive belt 14.
  • This provision is also intended to facilitate the replacement of the abrasive belt 14, since, by overcoming the resistance of spring 23, for example by pressing manually on the handle 24, connected to the lever 22, we lowers the roller 17, so that said strip relaxes and can be easily removed.
  • the idler roller 25 is advantageously journaled at the end of a lever 26 articulated on the plate 18 and put in motion by a pneumatic piston 27, anchored on the same plate (see figure 2) and which regulates the working pressure abrasion.
  • the roller 29 is mounted directly on the plate 18 while the other small roller 30 is supported by a lever 31, journalled on said plate and pushed towards the glass sheet by a biasing spring 32.
  • roller 30 The function of the roller 30 is that of the feeler of the presence of the glass sheet to be worked, so that the overflow group 5 approaches the sheet, then stops at the correct distance from the sheet, depending on the thickness of it.
  • the overflow group 5 is also provided with a rotational movement around said axis 33, to orient themselves at an angle of 90 °, which allows you to work upper and lower horizontal edge regions of said sheet.
  • This orientation of the device 5 according to angles of 90 °, so that the plate 18, with its accessories, is alternately in vertical position and in position horizontal, carried out using a pneumatic cylinder 34 which, via a stirrup 35, is mounted mad on a pin 36, integral with the support plate 10, while that a rod 37 secured to the cylinder 34, is also mounted crazy on the body of the carrier block 12.
  • An alternative embodiment relative to that which is illustrated, provides for the possibility of using, in additional overflow tool 13, vertically movable, another overflow tool 13, blocked on the structure machine carrier and arranged horizontally in the lower part of the support wall 2, so that ability to work lower horizontal edge region glass sheet 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

The edge grinder has a supporting panel (2), a rotary cylinder (3) and lower conveyor (4) to move the glass sheet (1) as its edges are ground by a vertically-moving assembly (5) with a carriage (6) travelling on guides (7) by means of a transmission chain (8). The grinding tool (13) of the assembly uses an endless abrasive strip (14) which is held under tension and driven by a series of rollers (15,16,17) and a motor (20), the rollers being mounted on a plate (18) which turns about an axis (33) lying perpendicular to the surface of the glass sheet. The tool is supported by a carrier unit (12) on a shaft (11) projecting from a supporting plate (10) fixed to the carriage.

Description

L'invention concerne un dispositif pour le débordage, par une opération d'abrasion, des bords des feuilles de verre, selon le préambule de la revendication 1.The invention relates to a device for overflowing, by an abrasion operation, the edges of the sheets of glass according to the preamble of claim 1.

Dans le travail des feuilles de verre, il se pose le problème de travailler les surfaces des feuilles de verre dans la région des bords pour enlever un revêtement de couches métalliques déposé par évaporation dans la région des bord de feuilles de verre métallisées.In the work of glass sheets, he poses the problem of working the surfaces of glass sheets in the edge area to remove a coating of metallic layers deposited by evaporation in the region of edge of metallic glass sheets.

On connaít des dispositifs pour l'enlèvement du revêtement métallique le long des bords de la feuille de verre qui sont essentiellement constitués par une paroi de soutien latérale sur le bord inférieur de laquelle est disposé un dispositif pour le transport de ladite feuille.There are known devices for removing the metallic coating along the edges of the sheet of glass which essentially consist of a wall of lateral support on the lower edge of which is arranged a device for transporting said sheet.

En face de la paroi, se trouve le dispositif qui exécute l'opération d'enlèvement de la portion de revêtement adjacente aux bords de la feuille et qui est mobile en translation sur des guides verticaux avec possibilité de déplacement dans les deux sens.Opposite the wall is the device that performs the coating portion removal operation adjacent to the edges of the sheet and which is movable in translation on vertical guides with possibility of moving back and forth.

Un premier procédé connu pour l'enlèvement du revêtement de la couche métallique consiste dans l'emploi de brûleurs dirigés vers le bord de la feuille de verre mais ce système est limité parce que seul un petit nombre des revêtements métalliques peut être enlevé à l'aide des brûleurs. A first known process for removing the coating of the metal layer consists of the use of burners directed to the edge of the glass sheet but this system is limited because only a small number of the coatings can be removed using the burners.

Un autre procédé, qui sert aussi bien pour l'enlèvement de la couche métallique que pour des opérations plus générales de nettoyage des bords d'une feuille de verre, prévoit l'emploi d'une ou de plusieurs meules abrasives montées sur un support coulissant verticalement, ainsi qu'orientable à 90° autour d'un axe perpendiculaire à la feuille elle-même, et qui passe par le point de contact entre cette dernière et l'outil en position de travail.Another process, which serves as well for removal of the metal layer only for more operations general cleaning of the edges of a glass sheet, provides for the use of one or more abrasive wheels mounted on a vertically sliding support, as well that can be turned 90 ° around an axis perpendicular to the sheet itself, and which goes through the point of contact between the latter and the tool in the working position.

Ce procédé présente au moins deux inconvénients notables qui se présentent pendant le travail de meulage.This process has at least two notable drawbacks which arise during grinding work.

Un premier inconvénient dérive du fait que la meule en phase de travail doit exercer une pression, bien que minime, sur la feuille de verre pour réaliser l'action d'abrasion et que, dans le cas de feuilles de verre de faible épaisseur, ceci peut provoquer la fêlure, sinon la rupture de cette dernière.A first drawback derives from the fact that the grinding wheel work phase must exert pressure, although minimal, on the glass sheet to perform the abrasion action and whereas, in the case of thin glass sheets, this may cause cracking, otherwise the rupture of this last.

Un deuxième inconvénient dérive du fait que la consommation de la meule en phase de travail impose l'utilisation d'un dispositif pour le rattrapage de l'usure de la couche abrasive de telle manière que la meule soit toujours en contact et qu'elle exerce la bonne pression contre la surface de la feuille de verre à traiter.A second drawback derives from the fact that the consumption of the grinding wheel during the working phase requires the use of a device to compensate for wear of the abrasive layer so that the grinding wheel is always in contact and exerting the right pressure against the surface of the glass sheet to be treated.

En outre, lorsque le diamètre de la couche abrasive a été réduit au-dessous d'une certaine valeur, les meules doivent être remplacées, et ceci représente un coût qui résulte, non seulement de l'emploi de meules neuves, mais aussi du fait qu'il est nécessaire d'arrêter la machine, ce qui est tout à fait au détriment de la productivité. In addition, when the diameter of the abrasive layer has been reduced below a certain value, the grinding stones must be replaced, and this represents a cost which results not only from the use of new grinding wheels, but also because it is necessary to stop the machine, this which is quite at the expense of productivity.

Le premier type d'inconvénient a été en partie éliminé en réalisant dans la paroi de soutien de la feuille de verre, au droit de la zone de travail, une fente verticale sur laquelle on a inséré un cylindre qui tourne autour de son axe vertical et qui a pour fonction de régler la pression exercée par l'outil en phase de travail sur l'élément à travailler.The first type of drawback has been partially eliminated by making in the support wall of the glass sheet, to the right of the work area, a vertical slot on which we inserted a cylinder which turns around its axis vertical and which has the function of regulating the pressure exerted by the tool in the working phase on the element to be worked.

Le but de la présente invention consiste à réaliser un dispositif pour un usinage d'abrasion des bords, communément appelé débordage, d'une feuille de verre ayant pour premier but de faire en sorte que l'action d'abrasion ne soit pas concentrée en un seul point mais qu'au contraire, elle soit étendue sur une surface, même si elle est limitée, afin de réduire la pression de l'outil en phase de travail et d'éviter la rupture de la feuille.The object of the present invention is to provide a device for edge abrasion machining, commonly called overflowing, of a sheet of glass having for first purpose of ensuring that the abrasion action is not concentrated in one point but on the contrary, it is extended over a surface, even if it is limited, in order to reduce the tool pressure during the working phase and avoid breaking the sheet.

Un autre but consiste à pouvoir utiliser un outil abrasif d'un coût réduit mais également d'une longue durée de vie et qui puisse être remplacé une fois entièrement usé, d'une façon simple et en quelques secondes.Another goal is to be able to use a tool abrasive of a reduced cost but also of a long duration of life and which can be replaced once fully worn, in a simple way and in seconds.

Ceci s'effectue en prévoyant l'emploi en tant qu'outil de travail, d'une bande ayant sa surface extérieure recouverte d'une couche abrasive, qui présente un profil fermé et qui peut circuler sur des rouleaux qui ont la fonction d'entraínement, de tension et de compression de ladite bande qui circule contre la surface de verre à travailler.This is done by providing for use as a tool working, of a strip having its outer surface covered with an abrasive layer, which has a profile closed and which can circulate on rollers which have the function of drive, tension and compression of said strip circulating against the glass surface to to work.

Les rouleaux qui supportent la bande ont leur axe de rotation parallèle à la feuille à travailler et sont ancrés sur une plaque disposée perpendiculairement à ladite feuille, laquelle plaque est à son tour supportée par un groupe qui lui permet d'exécuter un coulissement vertical dans les deux sens, ainsi que des rotations selon des angles de 90° autour d'un axe perpendiculaire à la même feuille à travailler, de manière à exposer à l'opération d'abrasion aussi bien les bords horizontaux que les bords verticaux de cette dernière.The rollers which support the strip have their axis of rotation parallel to the work sheet and are anchored on a plate arranged perpendicular to said sheet, which plate is in turn supported by a group which allows it to run vertically in both sense, as well as rotations at angles of 90 ° around of an axis perpendicular to the same sheet to be worked, of way to expose to the abrasion operation as well the horizontal edges as the vertical edges of the latter.

Plus précisément, la bande abrasive qui constitue la nouveauté de l'invention, est entraínée et tenue en tension par trois rouleaux, dont l'un, de plus grand diamètre, fait office de rouleau moteur, tandis que les deux autres, disposés en superposition, servent à maintenir tendue la partie de la bande qui va se placer en contact avec la feuille de verre.More specifically, the abrasive strip which constitutes the novelty of the invention, is driven and held in tension by three rollers, one of which, of larger diameter, motorized roller, while the other two, arranged in superposition, serve to keep the part of the strip which will be placed in contact with the sheet of glass.

Avantageusement, l'un des deux rouleaux qui forment la paire de rouleaux prévue pour la tension de la bande est amovible, de manière que son écartement hors de la position de travail élimine la tension sur la bande abrasive et permette de l'enlever et de la remplacer par une bande neuve.Advantageously, one of the two rollers which form the pair of rollers provided for belt tension is removable, so that its spacing out of position working eliminates tension on the abrasive belt and allows to remove it and replace it with a new band.

Il est également avantageusement prévu un autre petit rouleau intercalé entre la paire de rouleaux tendeurs et qui, monté fou, a pour mission de maintenir la surface de la bande abrasive en contact avec la feuille de verre sous une pression adéquate.Another small advantage is also provided. roller interposed between the pair of tensioning rollers and which, mounted crazy, has the mission to maintain the surface of the tape abrasive in contact with the glass sheet under a adequate pressure.

La poussée que ce petit rouleau intermédiaire engendre sur la bande abrasive est obtenue au moyen d'un levier commandé par un cylindre pneumatique, lui aussi solidaire de la plaque de support de l'ensemble du dispositif.The push that this small intermediate roller generates on the abrasive belt is obtained by means of a lever controlled by a pneumatic cylinder, also integral with the support plate of the entire device.

Finalement, il est prévu une autre paire de petits rouleaux fous, placés extérieurement au profil de la bande abrasive et exerçant la fonction de guidage de l'ensemble du dispositif sur la feuille de verre.Finally, it is expected another pair of small idle rollers, placed outside the strip profile abrasive and exercising the guiding function of the entire device on the glass sheet.

En particulier, au moins un de ces petits rouleaux munis d'un ressort de rappel, fait fonction de palpeur, c'est-à-dire qu'il détecte la présence de la feuille de verre sur le transporteur à rouleaux et, dans la position correcte, arrête la course de rapprochement de la plaque qui supporte la bande abrasive à chaque début de cycle de travail.In particular, at least one of these small rollers provided a return spring, acts as a feeler, i.e. that it detects the presence of the glass sheet on the roller conveyor and, in the correct position, stops the approximation stroke of the plate which supports the strip abrasive at the start of each work cycle.

Le dispositif décrit plus haut, qui comprend essentiellement la bande abrasive, les rouleaux de circulation et la plaque de support, peut être ancré en position fixe à la structure de la machine. De cette façon, il sera possible de travailler uniquement une région des bords de la feuille de verre, comme par exemple, la région horizontale inférieure.The device described above, which includes essentially the abrasive belt, the rollers circulation and support plate, can be anchored in fixed position to the machine structure. In this way, it will be possible to work only one region of edges of the glass sheet, for example, the region lower horizontal.

Le déplacement de la feuille de verre s'effectue sur des transporteurs munis de rouleaux ou de bandes transporteuses de type connu en soi, disposés à la base de la paroi de soutien et, en outre, l'ensemble du dispositif, du fait qu'il doit opérer de façon entièrement automatique, sera équipé de cellules photo-électriques, d'interrupteurs de proximité et analogues aptes à régler le fonctionnement de l'ensemble de l'installation.The glass sheet is moved on conveyors with rollers or conveyor belts of known type, arranged at the base of the wall of support and, moreover, the whole system, because it must operate fully automatically, will be equipped with photocells, proximity switches and analogs capable of regulating the operation of the assembly of the installation.

Ces caractéristiques de l'invention, ainsi que d'autres, seront rendues plus évidentes par la description d'une forme possible de réalisation, donnée uniquement à titre d'exemple illustratif et non limitatif, à l'aide des planches de dessins annexées sur lesquelles :

  • la Fig. 1 (planche I) représente la vue avant, en élévation, du dispositif selon l'invention, dans le sens du déplacement de la feuille de verre,
  • la Fig. 2 (planche II) représente la vue arrière, en élévation, du dispositif selon l'invention, dans le sens du déplacement de la feuille de verre,
  • la Fig. 3 (planche III) représente une vue en plan du dispositif selon l'invention.
    • These characteristics of the invention, as well as others, will be made more evident by the description of a possible embodiment, given solely by way of illustrative and nonlimiting example, using the sheets of drawings annexed to which:
  • Fig. 1 (plate I) represents the front view, in elevation, of the device according to the invention, in the direction of movement of the glass sheet,
  • Fig. 2 (plate II) represents the rear view, in elevation, of the device according to the invention, in the direction of movement of the glass sheet,
  • Fig. 3 (plate III) represents a plan view of the device according to the invention.

    • Comme on peut le voir sur la Fig. 1, la feuille de verre 1 métallisée est appuyée sur la paroi de soutien 2, sensiblement verticale, et sur le cylindre tournant 3, placé à l'opposé de l'outil de travail, qui sera décrit ci-après et elle est entraínée au moyen de rouleaux 4 placés au-dessous de ladite paroi.As can be seen in Fig. 1, the glass sheet 1 metallized is supported on the support wall 2, substantially vertical, and on the rotating cylinder 3, placed opposite the work tool, which will be described below and it is driven by rollers 4 placed below of said wall.

    En avant de la feuille 1, se trouve le groupe de débordage 5 supporté par le chariot 6, qui se déplace le long du guide 7, qui s'étend parallèlement à la paroi de soutien.In front of sheet 1 is the group of overflow 5 supported by the carriage 6, which moves along of the guide 7, which extends parallel to the support wall.

    Le déplacement du groupe de débordage 5 vers le haut ou vers le bas est le résultat du déplacement du chariot 6, relié au moyen d'une chaíne 8, aux rouleaux de renvoi 9 actionnés par un moteur non représenté sur la figure.The movement of the overflow group 5 upwards or down is the result of the movement of the carriage 6, connected by means of a chain 8, to the deflection rollers 9 actuated by a motor not shown in the figure.

    L'ensemble du groupe de débordage 5 se compose d'une plaque de support 10, ancrée au chariot 6, munie d'un arbre saillant 11 sur lequel est calé un bloc porteur 12 qui supporte l'outil de débordage 13.The entire overflow group 5 consists of a support plate 10, anchored to the carriage 6, provided with a shaft projection 11 on which a bearing block 12 is wedged which supports the overflow tool 13.

    L'outil de débordage 13, qui représente la nouveauté de l'invention, est essentiellement constitué par une bande abrasive 14, à profil fermé, maintenu tendu et mis en rotation au moyen de trois rouleaux 15, 16 et 17 placés à l'intérieur du profil de ladite bande et supportés par la plaque 18, elle-même verticale et perpendiculaire à la feuille de verre 1.The overflow tool 13, which represents the novelty of the invention is essentially constituted by a strip abrasive 14, with closed profile, kept taut and placed rotation by means of three rollers 15, 16 and 17 placed at inside the profile of said strip and supported by the plate 18, itself vertical and perpendicular to the glass sheet 1.

    Le premier rouleau 15, de plus grand diamètre, a pour fonction de faire circuler la bande abrasive 14, et il est actionné, au moyen de la courroie 19, par le moteur électrique 20 supporté par le bloc 12.The first roller 15, of larger diameter, has for function of circulating the abrasive belt 14, and it is actuated by means of the belt 19 by the motor electric 20 supported by block 12.

    Les deux rouleaux d'extrémité 16 et 17, fous et placés en position avant, à proximité de la feuille 1, ont pour fonction de délimiter la portion 21 de la bande abrasive qui va se placer en contact avec la surface de la feuille elle-même.The two end rollers 16 and 17, mad and placed in the front position, near sheet 1, have for function of delimiting the portion 21 of the abrasive strip which will come into contact with the surface of the sheet itself.

    Le rouleau 16 est monté directement sur la plaque de support 18 tandis que le rouleau 17 tourillonne à l'extrémité d'un levier 22, qui est à son tour articulé sur ladite plaque (voir figure 2).The roller 16 is mounted directly on the plate support 18 while the roller 17 spins at the end a lever 22, which is in turn articulated on said plate (see figure 2).

    Le ressort de poussée 23 agit sur le levier 22 de telle manière que le rouleau correspondant 17 soit toujours dans la position de tension maximum de la bande abrasive 14.The push spring 23 acts on the lever 22 so so that the corresponding roller 17 is always in the maximum tension position of the abrasive belt 14.

    Cette disposition a en outre pour but de faciliter le remplacement de la bande abrasive 14, puisque, en surmontant la résistance du ressort 23, par exemple en pressant manuellement sur la poignée 24, reliée au levier 22, on abaisse le rouleau 17, de sorte que ladite bande se détend et peut être facilement enlevée.This provision is also intended to facilitate the replacement of the abrasive belt 14, since, by overcoming the resistance of spring 23, for example by pressing manually on the handle 24, connected to the lever 22, we lowers the roller 17, so that said strip relaxes and can be easily removed.

    Entre les deux rouleaux 16 et 17, et toujours à l'intérieur du profil de la bande abrasive 14, se trouve un rouleau intermédiaire fou 25 qui a pour fonction de plaquer la portion 21 de la bande abrasive sur la surface de la feuille de verre.Between the two rollers 16 and 17, and always at inside the profile of the abrasive belt 14, there is a idler intermediate roller 25 which has the function of pressing the portion 21 of the abrasive strip on the surface of the sheet of glass.

    Le rouleau fou 25 est avantageusement tourillonné à l'extrémité d'un levier 26 articulé sur la plaque 18 et mis en mouvement par un piston pneumatique 27, ancré sur la même plaque (voir figure 2) et qui règle la pression du travail d'abrasion.The idler roller 25 is advantageously journaled at the end of a lever 26 articulated on the plate 18 and put in motion by a pneumatic piston 27, anchored on the same plate (see figure 2) and which regulates the working pressure abrasion.

    Finalement, on trouve aussi sur la plaque 18 deux rouleaux supplémentaires fous 29 et 30, extérieurs au profil de la bande abrasive 14 et placés en contact direct avec la surface de la feuille de verre et qui ont pour fonction de régler la position de l'ensemble de l'outil de débordage 5 pendant la phase de travail.Finally, we also find on plate 18 two extra crazy rollers 29 and 30, outside the profile of the abrasive strip 14 and placed in direct contact with the surface of the glass sheet and which have the function of adjust the position of the overflow tool assembly 5 during the work phase.

    Le rouleau 29 est monté directement sur la plaque 18 tandis que l'autre petit rouleau 30 est supporté par un levier 31, tourillonné sur ladite plaque et poussé vers la feuille de verre par un ressort de sollicitation 32.The roller 29 is mounted directly on the plate 18 while the other small roller 30 is supported by a lever 31, journalled on said plate and pushed towards the glass sheet by a biasing spring 32.

    La fonction du rouleau 30 est celle de palpeur de la présence de la feuille de verre à travailler, de façon que le groupe de débordage 5 se rapproche de la feuille, puis s'arrête à la bonne distance de la feuille, en fonction de l'épaisseur de celle-ci.The function of the roller 30 is that of the feeler of the presence of the glass sheet to be worked, so that the overflow group 5 approaches the sheet, then stops at the correct distance from the sheet, depending on the thickness of it.

    En supplément des mouvements vers le haut et vers le bas le long du guide 7, pour le travail des régions des bords verticaux de la feuille et du déplacement sur l'axe 33 de l'arbre 11, perpendiculaire à la surface de la feuille de verre 1, réalisés avec des mécanismes connus en soi et non représentés sur le dessin, le groupe de débordage 5 est aussi doté d'un mouvement de rotation autour dudit axe 33, pour s'orienter d'un angle de 90°, ce qui permet de travailler les régions des bords horizontaux supérieur et inférieur de ladite feuille.In addition to up and down movements along guide 7, for working the edge regions vertical sheet and displacement on axis 33 of the shaft 11, perpendicular to the surface of the leaf glass 1, produced with mechanisms known per se and not shown in the drawing, the overflow group 5 is also provided with a rotational movement around said axis 33, to orient themselves at an angle of 90 °, which allows you to work upper and lower horizontal edge regions of said sheet.

    Cette orientation du dispositif 5 selon des angles de 90°, de manière que la plaque 18, avec ses accessoires, soit alternativement en position verticale et en position horizontale, se réalise à l'aide d'un cylindre pneumatique 34 qui, par l'intermédiaire d'un étrier 35, est monté fou sur une broche 36, solidaire de la plaque de support 10, tandis qu'une tige 37 solidaire du cylindre 34, se monte elle aussi folle sur le corps du bloc porteur 12.This orientation of the device 5 according to angles of 90 °, so that the plate 18, with its accessories, is alternately in vertical position and in position horizontal, carried out using a pneumatic cylinder 34 which, via a stirrup 35, is mounted mad on a pin 36, integral with the support plate 10, while that a rod 37 secured to the cylinder 34, is also mounted crazy on the body of the carrier block 12.

    Une variante de réalisation, relativement à celle qui est illustrée, prévoit la possibilité d'utiliser, en supplément de l'outil de débordage 13, mobile verticalement, un autre outil de débordage 13, bloqué sur la structure porteuse de la machine et disposé horizontalement dans la partie inférieure de la paroi de soutien 2, de manière à pouvoir travailler la région horizontale inférieure du bord de la feuille de verre 1.An alternative embodiment, relative to that which is illustrated, provides for the possibility of using, in additional overflow tool 13, vertically movable, another overflow tool 13, blocked on the structure machine carrier and arranged horizontally in the lower part of the support wall 2, so that ability to work lower horizontal edge region glass sheet 1.

    Claims (12)

    Dispositif pour la débordage de feuilles de verre, oú la feuille de verre (1) à déborder est appuyée sur une paroi (2) et sur un cylindre tournant (3), sensiblement verticaux, ladite feuille étant entraínée par un transporteur inférieur (4), ledit dispositif présentant, en avant de ladite feuille, un groupe de débordage (5) doté d'un mouvement vers le haut et vers le bas, réalisé au moyen d'un chariot (6) qui circule verticalement sur les guides (7) au moyen de l'action d'une chaíne (8) munie de rouleaux de renvoi (9), et d'un mouvement linéaire de rapprochement et d'éloignement par rapport à la surface de ladite feuille de verre, caractérisé en ce qu'il comprend un outil de débordage (13) qui opère par abrasion plane, qui effectue l'opération de débordage des régions horizontales et verticales des bords de la feuille de verre (1), ledit outil comprenant une bande abrasive (14) à profil fermé, maintenue en tension et mise en entraínement au moyen d'une pluralité de rouleaux (15, 16, 17) supportés par une plaque (18) dotée d'un mouvement de rotation autour d'un axe (33) perpendiculaire à la surface de ladite feuille.Device for overflowing glass sheets, where the glass sheet (1) to overflow is supported on a wall (2) and on a rotating cylinder (3), substantially vertical, said sheet being driven by a lower conveyor (4), said device having, in front of said sheet, an overflow group (5) with a movement towards up and down, made by means of a carriage (6) which runs vertically on the guides (7) by means of the action a chain (8) provided with deflection rollers (9), and a linear movement of approaching and moving away by relative to the surface of said glass sheet, characterized in that it comprises an overflow tool (13) which operates by flat abrasion, which performs the overflow operation of horizontal and vertical regions of the edges of the sheet glass (1), said tool comprising an abrasive strip (14) closed profile, kept in tension and driven to means of a plurality of rollers (15, 16, 17) supported by a plate (18) having a rotational movement around a axis (33) perpendicular to the surface of said sheet. Dispositif selon la revendication 1, caractérisé en ce que l'outil de débordage (13) est supporté par un bloc porteur (12) monté fou sur un arbre (11) qui fait saillie à partir d'une plaque de support (10) ancrée au chariot (6), l'axe dudit arbre (11) coïncidant avec l'axe (33) d'orientation de l'ensemble de l'outil de débordage.Device according to claim 1, characterized in that the overflow tool (13) is supported by a block carrier (12) mounted mad on a shaft (11) which projects from a support plate (10) anchored to the carriage (6), the axis of said shaft (11) coinciding with the axis (33) orientation of the entire overflow tool. Dispositif selon la revendication 1, caractérisé en ce que la bande abrasive (14) est mise en mouvement par un premier rouleau (15) relié par la courroie (19) à un moteur électrique (20) ancré sur le bloc porteur (12).Device according to claim 1, characterized in that the abrasive strip (14) is set in motion by a first roller (15) connected by the belt (19) to a motor electric (20) anchored on the carrier block (12). Dispositif selon les revendications 1 et 2, caractérisé en ce qu'il présente deux rouleaux d'extrémité (16, 17) placés en position avant qui délimitent une portion de contact (21) de la bande abrasive (14) destinée à entrer en contact avec la surface à travailler.Device according to claims 1 and 2, characterized in that it has two end rollers (16, 17) placed in the front position which delimit a portion contact (21) of the abrasive belt (14) intended to enter in contact with the surface to be worked. Dispositif selon la revendication 4, caractérisé en ce qu'au moins un des deux rouleaux d'extrémité (16, 17) est adapté pour tourilloner sur un levier (22) articulé sur la plaque (18) et attaqué par un ressort de poussée (23).Device according to claim 4, characterized in that at least one of the two end rollers (16, 17) is suitable for journaling on a lever (22) articulated on the plate (18) and driven by a thrust spring (23). Dispositif selon la revendication 5, caractérisé en ce que la rotation du levier (22), obtenue en agissant sur la poignée (24), éloigne ledit rouleau d'extrémité (17) de la bande (14), en provoquant la détente de celle-ci.Device according to claim 5, characterized in what the rotation of the lever (22), obtained by acting on the handle (24), moves said end roller (17) away from the strip (14), causing it to relax. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'entre les deux rouleaux d'extrémité (16, 17) placés en avant, se trouve un rouleau intermédiaire (25) qui a la fonction d'assurer le plaquage de la portion de contact (21) de la bande abrasive (14) sur la surface à travailler.Device according to one or more of the claims previous, characterized in that between the two rollers end (16, 17) placed in front, there is a roller intermediary (25) which has the function of ensuring the plating of the contact portion (21) of the abrasive belt (14) on the work surface. Dispositif selon la revendication 7, caractérisé en ce que le rouleau intermédiaire (25) est monté fou sur un levier (26) articulé sur la plaque (18) et mis en mouvement par un piston pneumatique (27) à action de poussée réglable.Device according to claim 7, characterized in that the intermediate roller (25) is mounted idly on a lever (26) articulated on the plate (18) and set in motion by a pneumatic piston (27) with adjustable thrust action. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend, extérieurement à la bande abrasive (14) et en position avant, deux rouleaux supplémentaires fous (29, 30) dont au moins un fait office de palpeur pour détecter la présence de la feuille de verre (1).Device according to one or more of the claims previous, characterized in that it includes, externally to the abrasive belt (14) and in the front position, two rollers additional insane (29, 30) at least one of which acts as feeler to detect the presence of the glass sheet (1). Dispositif selon la revendication 9, caractérisé en ce qu'un (30) des rouleaux supplémentaires (29,30) est tourillonné sur un levier (31) articulé sur la plaque (18) et est attaqué par un ressort de sollicitation (32).Device according to claim 9, characterized in what one (30) of the additional rollers (29,30) is journalled on a lever (31) articulated on the plate (18) and is attacked by a biasing spring (32). Dispositif selon la revendication 1 et une ou plusieurs des revendications précédentes , caractérisé en ce que la rotation angulaire de l'outil de débordage (13), par portions successives de 90°, sur l'axe (33) perpendiculaire à la surface de la feuille (1), s'effectue au moyen d'un cylindre pneumatique (34) monté de façon folle, par l'intermédiaire d'une fourche (35), sur une broche (36) solidaire de la plaque de support (10), la tête d'une tige (37) solidaire dudit cylindre pneumatique (34) étant en prise de façon folle avec le corps du bloc de support (12).Device according to claim 1 and one or more several of the preceding claims, characterized in that the angular rotation of the overflow tool (13), by successive portions of 90 °, on the perpendicular axis (33) on the surface of the sheet (1), is carried out by means of a pneumatic cylinder (34) mounted madly, by through a fork (35), on a spindle (36) integral with the support plate (10), the head of a rod (37) integral with said pneumatic cylinder (34) being engaged madly with the body of the support block (12). Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend un autre outil de débordage (13) fixe et disposé horizontalement au niveau d'au moins une des régions horizontales des bords de la feuille (1).Device according to one or more of the claims previous, characterized in that it includes another tool fixed overflow (13) arranged horizontally at level at least one of the horizontal regions of the edges of the sheet (1).
    EP97117721A 1996-10-16 1997-10-14 Method for edge grinding of glass plates Withdrawn EP0846525A1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    IT96VI000162A IT1287347B1 (en) 1996-10-16 1996-10-16 DEVICE FOR THE EDGEBANDING OF GLASS SHEETS
    ITVI960162 1996-10-16

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    EP1167312A1 (en) * 2000-06-27 2002-01-02 Bando Kiko Co. Ltd. Method of and appliance for removing a film layer on a glass plate and glass-plate working unit comprising a station equipped with this appliance
    US7682220B2 (en) 2001-12-06 2010-03-23 Bando Kiko Co., Ltd. Glass-plate working apparatus
    ITVI20090093A1 (en) * 2009-04-28 2010-10-29 Costa Levigatrici Spa BELT SANDER, SANDING GROUP AND ITS METHOD TO APPLY IRREGULAR DRAWINGS PARTICULARLY ON WOOD PANELS
    CN103707152A (en) * 2013-12-16 2014-04-09 南充市长远铝业有限公司 Automatic burring machine of aluminum profile
    CN109693165A (en) * 2017-10-24 2019-04-30 冯肃钢 A kind of cylinder type Full-automatic glass decoration polisher lapper
    CN110695819A (en) * 2019-11-21 2020-01-17 重庆大学 Double-shaft driving abrasive belt grinding head
    CN111993229A (en) * 2020-08-18 2020-11-27 李英 Mechanical engineering metal grinding device
    TWI808215B (en) * 2018-07-20 2023-07-11 日商荏原製作所股份有限公司 Polishing apparatus and polishing method
    CN118493148A (en) * 2024-07-18 2024-08-16 广东汉玻科技有限公司 Front end positioning device for ultra-long large glass end mill

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    CN110450010B (en) * 2019-08-22 2021-01-26 安徽富亚玻璃技术有限公司 Glass grinding guide device
    CN111390684B (en) * 2020-03-20 2021-01-01 温州职业技术学院 A burring device for electric motor rotor assembly line
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    EP1167312A1 (en) * 2000-06-27 2002-01-02 Bando Kiko Co. Ltd. Method of and appliance for removing a film layer on a glass plate and glass-plate working unit comprising a station equipped with this appliance
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    CN103707152A (en) * 2013-12-16 2014-04-09 南充市长远铝业有限公司 Automatic burring machine of aluminum profile
    CN109693165A (en) * 2017-10-24 2019-04-30 冯肃钢 A kind of cylinder type Full-automatic glass decoration polisher lapper
    CN109693165B (en) * 2017-10-24 2023-08-29 浦江众联水晶有限公司 Roller type full-automatic grinding and polishing machine
    TWI808215B (en) * 2018-07-20 2023-07-11 日商荏原製作所股份有限公司 Polishing apparatus and polishing method
    CN110695819A (en) * 2019-11-21 2020-01-17 重庆大学 Double-shaft driving abrasive belt grinding head
    CN111993229A (en) * 2020-08-18 2020-11-27 李英 Mechanical engineering metal grinding device
    CN118493148A (en) * 2024-07-18 2024-08-16 广东汉玻科技有限公司 Front end positioning device for ultra-long large glass end mill

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    IT1287347B1 (en) 1998-08-04

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