WO1995011364A1 - Procede et dispositif permettant l'assemblage de doubles vitrages au moyen d'entretoises en forme de cadre constituees d'une matiere plastique - Google Patents

Procede et dispositif permettant l'assemblage de doubles vitrages au moyen d'entretoises en forme de cadre constituees d'une matiere plastique Download PDF

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Publication number
WO1995011364A1
WO1995011364A1 PCT/EP1994/003436 EP9403436W WO9511364A1 WO 1995011364 A1 WO1995011364 A1 WO 1995011364A1 EP 9403436 W EP9403436 W EP 9403436W WO 9511364 A1 WO9511364 A1 WO 9511364A1
Authority
WO
WIPO (PCT)
Prior art keywords
spacer
glass
plastic
tilting table
base
Prior art date
Application number
PCT/EP1994/003436
Other languages
German (de)
English (en)
Inventor
Rudolf Bernhard
Original Assignee
Lenhardt Maschinenbau Gmbh
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 Lenhardt Maschinenbau Gmbh filed Critical Lenhardt Maschinenbau Gmbh
Publication of WO1995011364A1 publication Critical patent/WO1995011364A1/fr

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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
    • E06B3/673—Assembling the units
    • E06B3/67326—Assembling spacer elements with the panes
    • E06B3/6733—Assembling spacer elements with the panes by applying, e.g. extruding, a ribbon of hardenable material on or between the panes
    • 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
    • E06B3/673—Assembling the units
    • E06B3/67365—Transporting or handling panes, spacer frames or units during assembly
    • 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
    • E06B3/673—Assembling the units
    • E06B3/67365—Transporting or handling panes, spacer frames or units during assembly
    • E06B2003/67378—Apparatus travelling around the periphery of the pane or the unit

Definitions

  • the invention is based on a method with the features specified in the preamble of claim 1 and on a device with the features specified in the preamble of claim 9.
  • insulating glass panes which consist of glass panels, which are glued to one another at the edge with the interposition of a frame-shaped spacer, have been assembled in an almost vertical position in order to add a sag to the upper glass panel which is otherwise observed in a horizontal position during assembly avoid.
  • Such a sag cannot be undone after the insulating glass pane has been assembled, if the interior of the insulating glass pane is hermetically sealed as a result.
  • plastic spacers When plastic spacers are used, there is also the fact that they can flow under the weight of a glass sheet bearing on them, especially in the case of large-format and thick glass sheets, and when the plastic spacer is only immediately before the insulating glass pane is assembled by extrusion onto one of the glass sheets is applied, so that it is difficult in this way to produce spacers with a precisely predetermined thickness, ie insulating glass panes with a precisely predetermined air gap.
  • this is an additional work step which is undesirable per se and makes production more expensive.
  • the present invention has for its object to show a way how to insulating glass panes with a frame-shaped, plastic spacer, which is only brief be before the actual assembly of a Isolierglasschei ⁇ is formed by extrusion, with exactlyguidingstimm ⁇ tem distance (air gap) of the glass' panels voneinan ⁇ can assemble without sagging particularly wide spacer strands themselves.
  • the invention leaves the path of extruding the plastic spacer directly onto one of the glass sheets of the insulating glass pane.
  • the invention also leaves the way of prefabricating the plastic strand from which the spacer is formed as a strand and then processing it from the supply roll and continuously applying it along the edge to one of the glass sheets of the insulating glass pane.
  • the invention takes a third route in that the spacer frame is extruded directly onto a base, which is not one of the two glass plates which it is intended to keep at a distance in the insulating glass pane, but rather a base, on which the extruded mass adheres worse than on the glass sheets.
  • the finished spacer is placed on one of the glass transferred plates. This can be done simply by pressing the spacer onto a glass sheet with the help of the base; because the spacer adheres better to the glass sheet than to the base, it stays on the glass sheet afterwards when the
  • thermoplastic compound in particular a polyisobutylene
  • the mass extruded onto the pad is preferred on the pad cooled, for example by blowing with cold air, but particularly preferably in that the base itself is cooled, for example in that the base is a plate with cooling channels through which a coolant flows.
  • the mass from which the spacer is extruded is, however, a crosslinking plastic, then this is preferably heated on the base to accelerate the crosslinking, in particular by the base itself being heated, for example by in electrical heating conductor inserted.
  • the method is preferably carried out in such a way that the base is kept horizontal while the mass is being applied and is brought into a vertical or almost vertical position for transferring the spacer onto a glass sheet of a pair of glass sheets.
  • the glass sheets can be moved and handled in a manner known per se on a horizontal conveyor and leaning against a support device through an assembly line during the entire manufacturing process.
  • the vertical is used only for the purpose of producing a plastic spacer by extrusion Working method deviated by extruding the spacer onto a horizontal or approximately horizontal surface.
  • the internal cohesion of the initially still pasty plastic mass which is usually a polyisobutylene heated to 70 ° C. to 80 ° C.
  • the initially still pasty plastic mass which is usually a polyisobutylene heated to 70 ° C. to 80 ° C.
  • the freshly extruded strand cools down by giving off heat to the base and to the ambient air and solidifies progressively, which can be accelerated by additional cooling of the base and / or the strand.
  • the spacer solidified in the horizontal position and thus stabilized in its shape, can then easily be swung up with the base into a vertical or almost vertical position in order to press it onto a glass sheet without the spacer being able to complete the assembly of the insulating glass pane still sagging.
  • the actual assembly takes place in the almost vertical position of the glass panels, in which an undesired glass panel sag is avoided and in which the air space of the insulating glass pane, that is the width of the spacer which is compressed after the glass sheets have been compressed, is not determined by the weight of a glass sheet resting thereon, but solely by the pressing process, which is usually carried out in a plate press with a calibrated plate spacing.
  • the period of time in which the spacer is extruded onto the base can be used to position the first glass sheet of a pair of glass sheets at that point, namely in an assembly and pressing device in which the actual assembly is to take place.
  • the first glass sheet is preferably conveyed into the assembly and pressing device in its almost vertical position and is offset and held therein parallel to itself, transversely to the conveying direction.
  • the second glass sheet following the first glass sheet is stopped in the meantime in front of the assembly and pressing device in the swiveling area of the support, coated with the previously extruded spacer by swiveling up the support, then conveyed into the assembly and pressing device, where it is positioned congruently with the first glass sheet and assembled by closing the press with the first glass sheet.
  • the pad Once the pad has passed the extruded spacer on the second glass panel, it swings into its horizontal position 'back and is immediately ready to extrude on her a spacer for the next Glastafel- few, and for at least for the assembly and pressing of the preceding insulating glass pane is available, because only when the pressing process has ended and the insulating glass pane has been conveyed out of the assembly and pressing device can the first glass sheet for the next insulating glass pane enter the assembly and pressing device and the following glass ⁇ panel are positioned in front of the assembly and pressing device in order to receive the next spacer.
  • the method according to the invention can even shorten the cycle time in the production of insulating glass, especially since the pivoting movement of the lower part can take place very quickly, since it can be constructed very easily, since it only has to carry a spacer, the weight of which - compared to the weight of a glass sheet - is low. A light pad can be moved very quickly due to its low inertia.
  • the assembly and pressing device which is preferably designed as a plate press
  • the spacer widens due to the compression that occurs. Since the extent of the compression is known, the extent of the widening is also known.
  • the spacer is therefore extruded onto the base in such a way that it has a waist between its underside lying on the glass sheet and the surface facing away from it, which is dimensioned such that it disappears in the press due to the subsequent upsetting.
  • Such a method of operation would not be possible when extruding the spacer onto an approximately vertically standing glass sheet, because the waist would further increase the sagging or tipping of the spacer strand at its horizontal sections.
  • the spacer is therefore preferably extruded onto the base without gaps, and this measure is combined with one or both glass sheets, in particular at a corner, being bent away from the spacer before they are assembled and pressed to form the insulating glass pane.
  • a press suitable for this purpose is known from WO 89/11021 and from DE-U-9014304 for another purpose, namely for filling a foreign gas into an insulating glass pane.
  • a vertically working production line for insulating glass with plastic Spacers For the construction of the device according to the invention, one expediently starts from a vertically working production line for insulating glass with plastic Spacers.
  • a production line has a horizontal conveyor, on which the glass sheets are conveyed standing and leaning against an almost vertical support device through various successive stations.
  • One of these stations is an assembly and pressing device which, opposite the support device on which the glass sheets enter the assembly and pressing device, has a holding device, in particular in the form of a plate over which openings are distributed, through the air is sucked in, so that with this plate a glass panel leaning against the support device can be sucked in and lifted off parallel to itself.
  • a tilting table in front of the assembly and pressing device, which can be pivoted about an axis parallel to the conveying direction and the surface of which is designed in such a way that the plastic mass of the spacer adheres to it less than on the glass sheets.
  • a movable nozzle is assigned to this tilting table, through which a spacer can be extruded on the tilting table.
  • the table consists of a plastic, in particular a silicone, on which the spacer does not adhere well, in any case worse than on the glass sheet.
  • the plastic is preferably located as a thin layer on a metallic plate, which consists in particular of an aluminum material. This makes it possible for the hot extruded spacer to cool down and solidify quickly, particularly when the tilting table has a cooling device for its surface. If thermosetting compositions are also to be processed with the device, then the tilting table preferably also has a heating device for its surface in order to promote the crosslinking of the thermosetting composition.
  • the nozzle with which the spacer is extruded can be located at the end of a three-dimensionally movable, program-controlled robot arm; however, it is preferably located on a support which can be moved along a crossmember which in turn can be moved across the tilting table transversely to its longitudinal direction.
  • the traverse expediently extends at right angles to the horizontal conveyor, because then, when the spacer is extruded, it can be moved out of the pivoting area of the tilting table in a particularly short way.
  • the The tilting table can be divided transversely to the horizontal conveyor into two sections which can be moved together or independently of one another, on which two smaller spacers can be coated successively, in order then to be successively transferred to two glass panels positioned opposite them. Accordingly, the smaller insulating glass panes in the assembly and pressing device could also be assembled and pressed together.
  • the two sections of the tilting table can be moved together in synchronism in order to apply an extruded spacer extending over both sections of the tilting table to a correspondingly large-sized glass panel.
  • the layer of plastic that covers the tilting table could be a film that can be moved over the plate of the tilting table, in particular an endless film, from time to time to remove unused or, in the meantime, cleaned areas of the film to be able to study.
  • tilting table instead of only heating or cooling the tilting table, one could use the tilting table and the section of the horizontal conveyor assigned to it, including the section above it arranged support device surrounded by an air-conditioned housing. This allows you to control the problems with condensing moisture that may otherwise occur on the spacer during cooling.
  • FIG. 1 is a plan view of a section of a vertical insulating glass production line
  • FIG. 2 shows the view II-II according to FIG. 1 of that station in the insulating glass production line, in which a plastic spacer is extruded onto a tilting table, with a cut cross member,
  • FIG. 3 shows the station from FIG. 2, but with the tilting table swung up and cut
  • FIG. 4 shows a top view of another insulating glass production line with two tilting tables in the station for extruding plastic spacers.
  • a horizontal conveyor 1 divided into several sections leads through the section of the insulating glass production line shown in FIG. 1, each formed from a horizontally running roller conveyor 2 on which the glass sheets are conveyed standing up and from a support device 3 which runs almost vertically and which the glass panels are leaning against during conveyance.
  • the support device 3 is preferably an air cushion wall, but could also be formed by a field of driven or non-driven rollers.
  • the production line shows an intermediate transport path 4, which comes, for example, from a washing machine, a station 5 in which plastic spacers 7 are extruded, a further intermediate transport path 8, an assembly and pressing device 9, of which one is usually one another conveyor track section leads to a sealing station.
  • the assembly and pressing device 9 has a fixed air cushion wall 12 as a supporting device for the glass panels, which run into the assembly and pressing device on the horizontal conveyor 1.
  • the horizontal conveyor 1 passes through the assembly and pressing device 9.
  • the fixed air cushion wall 12 opposite a pressing plate 13 running parallel thereto, the distance to the air cushion wall 12 can be changed by a press drive, by means of which the pressing plate 13 can be displaced parallel to itself.
  • the press plate 13 has numerous air intake openings over its surface, through which air and with it glass sheets can be sucked in and held.
  • the station 5 has a tilting table 16 which can be moved on rails 14 and 15 which run at right angles to the conveying direction 11, the table top 17 of which is made of aluminum and has a thin silicon layer 17a on the surface. Channels 17b for a coolant run in the table top.
  • two rails 18 and 19 run transversely to the conveying direction 11 and rest on two stands 20 and 21.
  • a traverse 22 parallel to the conveying direction 11 can be moved transversely to the conveying direction 11 over the tilting table 16 tilted into the horizontal position (FIG. 2).
  • the carrier 23, which carries a nozzle 24 through which a plastic spacer 7 can be extruded, can be moved parallel to the conveying direction 11.
  • the nozzle 24 is fed by an arrangement 25 comprising a pump and a reservoir.
  • the device works as follows: Two glass sheets, which are to be assembled to form an insulating glass pane, are conveyed successively by the horizontal conveyor 1.
  • the first glass sheet runs up to the intermediate transport section 8 in front of the assembly and pressing device 9 and waits in front of it until the preceding assembly and pressing process therein has ended and the device 9 has been opened again, in order then to enter the assembly and Press device to break in.
  • a frame-shaped, closed, plastic spacer 7 is formed by the nozzle 24, which can be moved parallel and perpendicular to the conveying direction 11.
  • the first glass sheet is followed by the second glass sheet 26 up to the station 5, in which it is stopped in a predetermined position, preferably with its front edge near the outlet side of the station 5, exactly opposite the spacer 7.
  • a preselected cooling time of a few seconds, for example from 5 to 10 s has elapsed
  • the tilting table 16 is moved on the rails 14 and 15 against the horizontal conveyor 1 and at the same time swiveled up, as a result of which the spacer 7 contacts the second glass sheet 26 is pressed lightly so that it adheres to it when the tilting table is immediately pivoted back into its horizontal starting position and by the horizontal conveyor 1 is driven away.
  • the first glass sheet has run into the assembly and pressing device 9, stopped there in a predetermined position, sucked in by the pressing plate 13 and removed from the horizontal conveyor 1 by moving the pressing plate 13 back, so that the horizontal conveyor in the area of the assembling and pressing device 9 is free again.
  • the second glass sheet 26 covered with the spacer 7 is conveyed into the assembly and pressing device 9, stopped there congruent with the first glass sheet, and the pressure plate 13 is moved against the air cushion wall 12 in order to join the two glass sheets and compress the spacer 7 together to be glued and pressed to a predetermined thickness.
  • the assembly and pressing device 9 is opened and the insulating glass pane is removed.
  • two spacers 7 can be extruded next to one another in the station 5 and placed on two glass plates in order to subsequently join them together in the assembly and pressing device 9 with two glass plates previously positioned therein and held on the press plate 13.
  • the station 5, possibly also the assembly and pressing device 9 can be divided into two successive sections 5a and 5b in the conveying direction 11, each of which has a tilting table 16a and 16b, which has a section ⁇ section of the support wall 3 opposite, which is divided, but can also be undivided.
  • the two tilting tables 16a and 16b can be moved independently. In a departure from the first exemplary embodiment, in FIG.
  • the carrier 23 with the nozzle 24 is also movably supported on a cantilever arm 42 which extends transversely to the conveying direction 11 and which is attached to a carriage 43 which in turn is mounted on two rails 44 and 45 runs in the vicinity of the arrangement 25 of the pump and reservoir.
  • the cantilever arm 42 has its starting position and end position between the tilting tables 16a and 16b and can alternately operate both from there at short notice. As a result, short cycle times of the production line and at the same time sufficient hardening times for the spacers 7 are possible before they are swiveled up.
  • a corresponding design of the device for moving the nozzle 24 as in FIG. 4 could also be used in the first exemplary embodiment.
  • the starting point for the nozzle is expediently chosen such that it lies in the region of a leg of the spacer 7 running transversely to the conveying direction 1, just before the corner to the leg to be extruded next, parallel to the conveying direction 1, so that the leg Conveying direction 11 parallel legs are produced as early as possible and thereby have longer time to solidify than the legs of the spacer 7 running transverse to the conveying direction 11.
  • the plastic spacers could also be extruded through two nozzles to be used simultaneously, which have a common starting point and a common end point; this can reduce the cycle time in station 5.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

Afin d'assembler des doubles vitrages avec une entretoise en forme de cadre constituée d'une matière plastique, on forme d'abord l'entretoise en extrudant la matière plastique en continu sous forme d'un cordon pâteux sur un support (17a) auquel la masse adhère moins bien qu'aux plaques de verre (6, 26). L'entretoise (7) est ensuite transférée du support (17a) sur une des plaques de verre (26), puis on fait coïncider les deux plaques de verre (6, 26) et on les comprime ensemble.
PCT/EP1994/003436 1993-10-20 1994-10-19 Procede et dispositif permettant l'assemblage de doubles vitrages au moyen d'entretoises en forme de cadre constituees d'une matiere plastique WO1995011364A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4335673.7 1993-10-20
DE19934335673 DE4335673C1 (de) 1993-10-20 1993-10-20 Verfahren und Vorrichtung zum Zusammenbauen von Isolierglasscheiben mit rahmenförmigen Abstandhaltern aus einer plastischen Masse

Publications (1)

Publication Number Publication Date
WO1995011364A1 true WO1995011364A1 (fr) 1995-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/003436 WO1995011364A1 (fr) 1993-10-20 1994-10-19 Procede et dispositif permettant l'assemblage de doubles vitrages au moyen d'entretoises en forme de cadre constituees d'une matiere plastique

Country Status (2)

Country Link
DE (1) DE4335673C1 (fr)
WO (1) WO1995011364A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010111174A1 (fr) 2009-03-23 2010-09-30 Dow Corning Corporation Intercalaire et joint d'étanchéité à bords chauds tout-en-un durcissable par voie chimique
US8866590B2 (en) 2006-05-30 2014-10-21 Dow Corning Insulating glass unit with an electronic device and process for its production
CN106014127A (zh) * 2016-07-05 2016-10-12 迈飞特自动化技术(苏州)有限公司 一种关平窗的自动化生产线

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2188624C (fr) * 1995-10-24 2004-03-02 Frederick P. Floyd Pose-ruban souple et methode de fonctionnement
DE19617198A1 (de) * 1996-04-29 1997-11-13 Lenhardt Maschinenbau Verfahren zum Herstellen von Isolierglasscheiben mit thermoplastischem Abstandhalter
DE202008008113U1 (de) * 2008-06-19 2009-10-29 Bc Prozesstechnik Gmbh Anlage zum Verkleben von Scheiben in Rahmenprofilen
DE102009038799B4 (de) 2009-08-25 2011-07-28 Grenzebach Maschinenbau GmbH, 86663 Verfahren und Vorrichtung zum blasenfreien Verkleben großflächiger Glasplatten
AT508998B1 (de) 2009-10-22 2011-07-15 Inova Lisec Technologiezentrum Vorrichtung zum applizieren flexibler abstandhalterbänder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712651B1 (de) * 1977-03-23 1978-03-30 Karl Lenhardt Rahmenauflegestation in einer Anlage zum Zusammenbau von Isolierglas
FR2417480A1 (fr) * 1978-02-17 1979-09-14 Bfg Glassgroup Procede et dispositif pour la fabrication de vitrages multiples et vitrage multiple obtenu suivant ce procede
EP0012462A1 (fr) * 1978-12-18 1980-06-25 Luigi Bovone Elettromeccanica Installation pour la fabrication automatique de vitrages isolants pour fenêtres et portes
FR2667580A1 (fr) * 1990-10-03 1992-04-10 Quelen Andre Sequence de fonctionnement pour installation de production de doubles vitrages.

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Publication number Priority date Publication date Assignee Title
DK166578B1 (da) * 1984-08-22 1993-06-14 Saint Gobain Vitrage Anlaeg til ekstrudering og paafoering af en streng af plastmateriale paa en glasplade
DE3617213C1 (en) * 1986-05-22 1987-07-23 Sinsch Joachim Method of, and apparatus for, fitting a spacer on a pane for producing laminated insulating glass
WO1989011021A1 (fr) * 1988-05-04 1989-11-16 Lenhardt Maschinenbau Gmbh Procede et dispositif pour remplir des vitres isolantes de gaz lourd
AT408982B (de) * 1990-02-28 2002-04-25 Lisec Peter Verfahren zum füllen des innenraumes von isolierglasscheiben mit gas
DE4104108A1 (de) * 1991-02-11 1992-08-13 Ver Glaswerke Gmbh Vorrichtung zum ablegen eines kugelfoermige abstandshalter enthaltenden dichtstoffstrangs auf einer glasscheibe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712651B1 (de) * 1977-03-23 1978-03-30 Karl Lenhardt Rahmenauflegestation in einer Anlage zum Zusammenbau von Isolierglas
FR2417480A1 (fr) * 1978-02-17 1979-09-14 Bfg Glassgroup Procede et dispositif pour la fabrication de vitrages multiples et vitrage multiple obtenu suivant ce procede
EP0012462A1 (fr) * 1978-12-18 1980-06-25 Luigi Bovone Elettromeccanica Installation pour la fabrication automatique de vitrages isolants pour fenêtres et portes
FR2667580A1 (fr) * 1990-10-03 1992-04-10 Quelen Andre Sequence de fonctionnement pour installation de production de doubles vitrages.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8866590B2 (en) 2006-05-30 2014-10-21 Dow Corning Insulating glass unit with an electronic device and process for its production
WO2010111174A1 (fr) 2009-03-23 2010-09-30 Dow Corning Corporation Intercalaire et joint d'étanchéité à bords chauds tout-en-un durcissable par voie chimique
CN106014127A (zh) * 2016-07-05 2016-10-12 迈飞特自动化技术(苏州)有限公司 一种关平窗的自动化生产线

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