EP3045281A1 - Automatische maschine zum bohren und fräsen von vertikal angeordneten glasscheiben und seine benutzung - Google Patents

Automatische maschine zum bohren und fräsen von vertikal angeordneten glasscheiben und seine benutzung Download PDF

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Publication number
EP3045281A1
EP3045281A1 EP16151205.8A EP16151205A EP3045281A1 EP 3045281 A1 EP3045281 A1 EP 3045281A1 EP 16151205 A EP16151205 A EP 16151205A EP 3045281 A1 EP3045281 A1 EP 3045281A1
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EP
European Patent Office
Prior art keywords
tool
glass sheet
drilling
accessory
milling
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.)
Granted
Application number
EP16151205.8A
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English (en)
French (fr)
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EP3045281B1 (de
Inventor
Fortunato Vianello
Riccardo VIANELLO
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Forel SpA
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Forel SpA
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Publication of EP3045281A1 publication Critical patent/EP3045281A1/de
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Publication of EP3045281B1 publication Critical patent/EP3045281B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/003—Multipurpose machines; Equipment therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work

Definitions

  • the present invention relates to a device and method adapted to fill some shortcomings that are currently present in machines for drilling and milling glass sheets, having a rectangular or other than rectangular shape, with an arrangement that is vertical or slightly inclined with respect to the vertical.
  • One predominant shortcoming being the support and removal of scrap.
  • Methods for drilling and milling glass sheets, having a rectangular or other than rectangular shape, as obtained following cutting from the original production format to the destination formats and, in most cases but not exclusively, following the grinding of the perimetric edge, are currently known.
  • the grinding, drilling and milling operations are applicable to any step of the processing of the glass sheet after cutting, for example before its use as is for the composition of the insulating glazing unit or as a necessary operation prior to tempering or as preparation of the glass sheet to obtain a definite and regular geometry and surface finish.
  • the first one relates to safety in handling said glass sheets, in which the edges would be dangerously sharp if they were not ground;
  • the second one relates to the elimination of edge defects of the sheets, typically so-called micro-cracks produced by scoring and cutting processes, which might trigger breakages of the sheet in the subsequent processing steps (in particular the tempering step) as well as in the subsequent states of transport or use;
  • the third one can be simply to define the format of the glass sheet with better dimensions, geometry and surface finish than can have been obtained with the first processing step, i.e., cutting, which leaves the edges rough, and this occurs for architectural uses, for uses in interior decoration and in particular for use in the composition of a structural glazing unit (a typical enclosure of buildings), the geometry of which is required to be precise in its dimensions and shape and the edge finish of which is required to be uniform in view of the visual effects linked to this configuration; additional reasons for resorting to grinding of the perimetric edge may be the most disparate.
  • a further and important problem is linked to the retention and subsequent movement of the part of the glass sheet that will become scrap (a term which is a synonym of waste or debris) of finite dimensions, i.e., all those byproducts of drilling and milling that do not consist of glass dust but consist of parts which, once processing has ended, would fall downward, in view of the substantially vertical arrangement of the glass sheet, or would be propelled in several directions, damaging not only such scrap and the parts of the machine struck by the waste but also the surface of the glass sheet that will constitute the finished part intended for use.
  • scrap a term which is a synonym of waste or debris
  • PCT/IB2015/057703 partially solves the problem of the retention and conveyance of scrap, as can be deduced from the corresponding description (pages 26 and 27), from the corresponding figures (in particular Figures 3 and 21), and from the corresponding claims (6, 7), but these solutions have the prerogative of constituting dependent claims, which are rather specific for the same invention and instead are not applicable more broadly in the same invention or more universally in machines that perform perimetric grinding, drilling and milling.
  • the tool magazines typically of the linear type (fixed or translating for example by means of a chain) or of the revolver type (rotating), accommodate abrasive tools in the combinations of various composition related to the agglomerates and abrasives, as a function of the type of glass and of the processing parameters and of various shapes as a function of the type of processing (grinding or drilling or milling), of the profile to be obtained in the sense of the thickness of the glass sheet and of the desired finish (coarse rough edge, medium rough edge, fine rough edge, polished edge).
  • each accessory can be shaped so as to be suitable to couple by interlocking either to the portion of sheet that belongs to the finished part or to the portion of sheet that becomes scrap, and the innovation consists in having an accessory magazine together or complementarily with the tool magazine, each of said accessories being interfaceable for example with the spindle of the rear processing head (or more generally with a head or with each of the heads), with progressive replacements according to the shape of the processes to be performed or of the scrap to be removed.
  • the pads which instead have the sole function of contrasting the thrust of the opposite tool during processing, coupling to the glass sheet like a support.
  • the aim of the present application is therefore to solve the highlighted technical problems of the background art and therefore to devise innovative solutions that allow the functional management of the scrap produced by drilling and milling of glass sheets.
  • an object of the present invention is to restrain the part of the glass sheet that will be converted into scrap, or the part of the glass sheet that is adjacent to the part that will be converted into scrap, or both, during drilling and milling, and to guide the scrap to the position for discharge or conveyance to subsequent processes.
  • an automatic machine and method for drilling and milling glass sheets that are substantially flat and are arranged vertically or slightly inclined with respect to the vertical, comprising a known machine body, having various shapes, provided with at least two mutually opposite processing heads which are also known and have various shapes and are adapted to make contact with the faces of the glass sheet having any shape, in any position, said processing heads being each provided with their own synchronous motions (independently of each other) for feeding (or advancement) and adjustment according to various axes, each processing head being provided with a spindle in order to impart to the respective tool the rotary motion in order to allow the cutting motion; the tools being extractable from tool magazines and returnable to the tool magazines.
  • Such machine and method use an additional function that relates to either processing head or both and consists in using the spindle or spindles by interfacing therewith, according to the requirements of the step of the processing cycle, not a tool but an accessory, constituted by at least one sucker or at least one pad, that can be picked up from the tool magazine or magazines.
  • the machine dedicated to the drilling and milling processes is constituted substantially by an input conveyor 100, a main body that is described in detail hereinafter, and an output conveyor 200.
  • Both conveyors, as well as the central machine body, keep a glass sheet 1 at an inclination of approximately 6° with respect to the vertical, to provide the conditions of stability thereof during transport, stops and processes, arrangement conditions that indeed entail seeking a solution for managing scrap in a manner other than by falling by gravity.
  • the main body of the machine substantially comprises: the front processing head 300; the rear processing head (and head for fixing the plate in the case of application PCT/IB2015/057703 ) 400; each processing head (or corresponding spindle of the electric spindle) being provided with: a cutting motion; a feeding (or advancement) and adjustment motion along vertical axes, respectively Y1 and Y2; a feeding (or advancement) and adjustment motion along transverse axes, respectively Z1 and Z2; one or both of said heads being also optionally provided with a feeding (or advancement) and adjustment motion along horizontal axes, respectively X1 and X2, or the sheet being movable with its own feeding (or advancement) and adjustment motion along the horizontal axis X; the tool magazine 500.
  • the processing head or heads that are intended also for the function of restraining the part of the glass sheet that will become scrap or of fixing the part of the glass sheet proximate to the machining tool is or are provided with an electric spindle, the spindle of which, designated by the reference numerals 301, 401, can be locked in angular phase by means of known devices ( Figure 6 shows the restraints between spindles 301, 401 and accessory holder tool holders 302, 402) and the end part of which, i.e., the one directed toward the glass sheet, has a universal shape, i.e., suitable both to couple to the tool holders 302, 402 and to couple to the accessory holders 302, 402 for restraining the portion of glass sheet 1, a universal shape of the female "Morse" cone type.
  • such tools-accessories are accommodated in a toolholder 302, 402 or in an accessory holder 302, 402 that has a universal shape, typically a male "Morse" cone, i.e., suitable to mate with the spindle of the electric spindle at one end by means of known coupling and uncoupling restraints, and with the tool or accessory at the opposite end.
  • a universal shape typically a male "Morse" cone, i.e., suitable to mate with the spindle of the electric spindle at one end by means of known coupling and uncoupling restraints, and with the tool or accessory at the opposite end.
  • the tool magazine 500 is also part of the central body and is split into a front row 500 and a rear row 502, for example of the rack type, the operation of which belongs to the background art and simply consists in arranging each rack in the operating region of the spindles of the processing heads for example by means of pneumatic actuators 503, 504, not shown, in order to interface with the axis of the spindle or in the step of retraction of the tool holder-accessory holder that has ended the function or in the step of delivery of the tool holder-accessory holder required for the subsequent function (see Figures 5 and 8 ).
  • a section 600 shown only schematically in Figure 7 since it is known, relates to the control unit for creating the vacuum required for the activation of the grip of the portion of the glass sheet 1 by means of the at least one sucker.
  • control units can be optionally constituted by a pneumatic ejector (solution shown in Figure 7 ) or by a vacuum pump and by known accessories such as manual valves, electric valves, connectors, etc.
  • the rear processing head 400 by means of the adjustment motion along the axis 2, is arranged at the height in elevation (an operation that could also be performed earlier) and the spindle 401 now with the function of a drill by means of a transverse stroke along the axis Z2 provides a guide hole with a depth of approximately 1/3 s by using the tool 403 and the plate being retained by suckers 416 that belong to the rear processing head 400.
  • the front processing head 300 which in turn is arranged along the axis Y1 at the height of the guide hole, completes the opposite drilling for the complementary depth, equal to approximately 2/3 s by means of a transverse stroke along the axis Z1, the corresponding spindle 301 being in drilling mode by using the tool 303.
  • the two spindles 401, 301 can act simultaneously, according to the respective axes Z2 and Z1 until the rear one has performed the transverse stroke equal to 1/3 s and therefore retracts, while the front one, which also has reached completion of the transverse stroke equal to 1/3 s, continues its completion stroke so that a through hole is provided, the scrap 2 of which is shaped like a cylindrical core and is expelled by means of the action of the water jet or compressed air jet that arrives from the hollow part of the front tool 303.
  • This is shown in Figures 3a, 3b, 3c (sectional views of the glass sheet 1) and in Figures 9b, 9c (seen toward the rear face p1 of the glass sheet 1).
  • the rear processing head 400 and with it the spindle 401 returns the drilling bit tool 403 to the tool-accessory magazine 502 and picks up from it the accessory 505 that is suitable for the subsequent restraint of the portion of glass sheet 1 that is intended to be converted into scrap 2, in this case a set of three suckers arranged in a right-angled triangle (alternative shapes of the accessory 505, which can be selected as a function of the shape of the scrap 2, are in any case available in the magazine 502), then it repositions itself by moving along the axis Y2 at the elevation suitable for interfacing with the portion of the glass sheet 1 that will become scrap 2.
  • This milling starts from the position in which the hole described in the preceding paragraphs has been provided beforehand after placing the milling tool 303, actuated through the axes X1 and Y1 according to the coordinates of the processing start point and then the adjustment penetration of the milling tool 303 in said hole through the axis ZI ( Figures 9e, 9f ).
  • the guide hole is not necessary, since processing can begin from the outside of the glass sheet 1.
  • This guiding is performed initially by activating the axis Z2, which performs a stroke that is slightly greater than the thickness s of the glass sheet 1 in order to extract the scrap 2 transversely to the glass sheet 1 ( Figure 9h ) and then by activating the axis Y2 for the downward motion ( Figure 9i ) and optionally the axis X2.
  • the final step is therefore the release of the vacuum (venting, by connection to the ambient air or to a source of compressed air, see Figure 7 ) for uncoupling between the sucker (suckers) 505 and the scrap 2 and for the transfer thereof either to the scrap collection tray or to the output conveyor 200.
  • the glass sheets 1 can have a rectangular or other than rectangular shape (for example contoured with portions that are all straight or shaped with some of the portions which are curvilinear, the base of the glass sheet 1 being usually rectilinear).
  • a software interfaced with the library of the shapes required by the production job supplies the input to the PLC (Programmable Logic Controller) that is suitable both to stop the sheet 1 in a precise phase with respect to the processing heads 300, 404 and to adjust and actuate the axes X1, Y1, X2, Y2.
  • the machine according to the invention achieves the intended aim and objects, which, it is stated once again, consists in restraining the portions 2 and 3 of the glass sheet 1 during processing, in restraining and moving the parts of the glass sheet 1 that will become scrap 2, and in the corresponding movements and the corresponding management.
  • This by using the primary inventive concept, which is to interface the spindles 301, 401 not only with processing tools (grinding, drilling, milling performed with abrasive tools 303, 403) but also with accessories such as suckers 505 (in various shape combinations) and pads 506.
  • the invention is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims.
  • the mechanical solutions for the feeding, adjustment and cutting motions of the tools and for picking up, adjusting and returning the tools 303, 403 and the accessories 505, 506 (systems of suckers and pads), the support and transport of the glass sheet 1 and the actuation means which can be electrical, electric-electronic, pneumatic, hydraulic and/or combined, while the control means can be electronic or fluidic and/or combined.
  • the machine by operating in a wet environment due to the cooling and lubricating flow directed onto the tools, is provided with protections (some of which are visible in Figure 8 ) such as bulkheads, sheaths, accordion-like elements, etc. to avoid the escape of fluids and the contamination of the parts that are not suitable to bear contact with liquids.
  • the machining scrap produced by drilling of the so-called core type, which is small or in any case has dimensions that are smaller than those required for interfacing with the sucker accessory, can be removed by way of the action of the flow of water for cooling/lubrication that is directed through the hollow part of the spindle 301, 401, of the tool holder 302, 402 and of the tool 303, 403 or as an alternative by way of the action of a stream of compressed air that is also directed through said hollow parts.
  • a field that is developing every day and also requires, in addition to the milling of the perimetric edge, the drilling and milling of the glass sheets 1, with adequate degrees of finish, is constituted by all those applications that resort to the use of tempered glass sheets, such as those in furnishings or electrical household appliances.
  • the drilling and milling of the glass sheet 1 thus constitutes an added value that is very important and qualifies the product, especially if this processing is performed with machines and methods that are not only superior in terms of quality and productivity but are also more functional in the management of the scrap 2 than what is currently commercially available.
EP16151205.8A 2015-01-16 2016-01-14 Automatische maschine zum bohren und fräsen von vertikal angeordneten glasscheiben und seine benutzung Active EP3045281B1 (de)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170304982A1 (en) * 2014-10-09 2017-10-26 Forel Spa Automatic machine and method for automatically drilling and milling glass sheets arranged vertically
CN108638345A (zh) * 2018-05-18 2018-10-12 安徽工程大学 一种玻璃板用防滑钻孔装置
IT201700108406A1 (it) * 2017-09-27 2019-03-27 Omv Vismara Di Mauro Vismara Macchina per la lavorazione di lastre in vetro
CN110696193A (zh) * 2019-09-26 2020-01-17 陕西拓日新能源科技有限公司 一种光伏玻璃打孔机的制造方式
CN113798868A (zh) * 2021-09-06 2021-12-17 宁波海天精工股份有限公司 一种三工位自动头库
CN113953929A (zh) * 2021-09-30 2022-01-21 河北光兴半导体技术有限公司 板材磨边装置
CN114918775A (zh) * 2022-05-20 2022-08-19 中山晶昱玻璃工艺制品有限公司 一种钢化玻璃加工用自动化流水线及加工方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112008826B (zh) * 2020-08-31 2021-09-14 杨明儒 钻井固废料处理方法

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE29621422U1 (de) * 1996-12-10 1998-04-09 Kraus Hermann Vorrichtung zur Bearbeitung plattenartiger Glas- oder Steinkörper
DE29825149U1 (de) * 1998-04-08 2005-06-23 P&L Gmbh & Co. Kg Werkzeugmaschine mit Werkstückwechseleinrichtung
DE202008012632U1 (de) * 2008-09-23 2010-02-25 Weeke Bohrsysteme Gmbh Bearbeitungsmaschine für sechsseitige Bearbeitung
EP2631048A1 (de) * 2012-02-21 2013-08-28 Forvet S.r.l. Multifunktionaler Werkzeugträgerdrehkopf für Glasbearbeitungsanwendungen und System zum Schneiden von Glasplatten mit einem derartigen Kopf
EP2687327A1 (de) * 2012-07-17 2014-01-22 Biesse S.p.A. Vorrichtung zum Schleifen der Ränder von Glasplatten, Marmor und Gesteinsmaterialien im Allgemeinen, mit integrierter Bohr-/Fräseinheit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29621422U1 (de) * 1996-12-10 1998-04-09 Kraus Hermann Vorrichtung zur Bearbeitung plattenartiger Glas- oder Steinkörper
DE29825149U1 (de) * 1998-04-08 2005-06-23 P&L Gmbh & Co. Kg Werkzeugmaschine mit Werkstückwechseleinrichtung
DE202008012632U1 (de) * 2008-09-23 2010-02-25 Weeke Bohrsysteme Gmbh Bearbeitungsmaschine für sechsseitige Bearbeitung
EP2631048A1 (de) * 2012-02-21 2013-08-28 Forvet S.r.l. Multifunktionaler Werkzeugträgerdrehkopf für Glasbearbeitungsanwendungen und System zum Schneiden von Glasplatten mit einem derartigen Kopf
EP2687327A1 (de) * 2012-07-17 2014-01-22 Biesse S.p.A. Vorrichtung zum Schleifen der Ränder von Glasplatten, Marmor und Gesteinsmaterialien im Allgemeinen, mit integrierter Bohr-/Fräseinheit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170304982A1 (en) * 2014-10-09 2017-10-26 Forel Spa Automatic machine and method for automatically drilling and milling glass sheets arranged vertically
US10702966B2 (en) * 2014-10-09 2020-07-07 Forel Spa Automatic machine and method for automatically drilling and milling glass sheets arranged vertically
IT201700108406A1 (it) * 2017-09-27 2019-03-27 Omv Vismara Di Mauro Vismara Macchina per la lavorazione di lastre in vetro
CN108638345A (zh) * 2018-05-18 2018-10-12 安徽工程大学 一种玻璃板用防滑钻孔装置
CN110696193A (zh) * 2019-09-26 2020-01-17 陕西拓日新能源科技有限公司 一种光伏玻璃打孔机的制造方式
CN113798868A (zh) * 2021-09-06 2021-12-17 宁波海天精工股份有限公司 一种三工位自动头库
CN113798868B (zh) * 2021-09-06 2022-10-14 宁波海天精工股份有限公司 一种三工位自动头库
CN113953929A (zh) * 2021-09-30 2022-01-21 河北光兴半导体技术有限公司 板材磨边装置
CN114918775A (zh) * 2022-05-20 2022-08-19 中山晶昱玻璃工艺制品有限公司 一种钢化玻璃加工用自动化流水线及加工方法

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