MXPA97006705A - System and method for forming devid leaves - Google Patents

Abstract

The present invention relates to a system for forming glass sheets, for the use of a factory having a factory ambient temperature, the glass sheet forming system is characterized in that it comprises: a housing defining a hot chamber which is heated above the ambient temperature of the factory, sufficiently to allow the formation of the glass sheet, a conveyor inside the hot chamber to horizontally convey a sheet of hot glass to be formed along a direction of transportation, a support device of the upper part placed inside the hot chamber and having a surface facing downwards which is inclined downwardly along the direction of transportation, and to which vacuum and pressurized air are supplied to provide floating floating upside down from the hot glass sheet after being received from the tra nsporter, a fastening assembly including a support which is mounted outside the housing, and which is at the factory ambient temperature, said fastening assembly includes a horizontal arm mounted by the support and extending through the housing towards the hot chamber, and having first and second fasteners for fixing the sheet of glass suspended below the top support device at a thermally stable site, at least one of the first and second fasteners include a rotating fastener member and a rotary impeller for making rotate the rotary fixing member, and the third fixer to cooperate with the first and second fasteners for fixing the glass sheet suspended below the support device of the upper part along and transversely with respect to the direction of transportation; mold sleeve to support a mold below the fixed glass sheet, suspended by the support device rte of the upper part, to receive the glass sheet of the same, for training

Description

SYSTEM AND METHOD FOR THE FORMATION OF GLASS SHEETS TECHNICAL FIELD This invention relates to a glass sheet forming system and method wherein a hot glass sheet is suspended and placed in an accurate manner below the downward face of a top support device to provide registration or alignment Precise as a 'mold that is moved below the top support device, to follow the glass sheet from it for the formation.

BACKGROUND OF THE INVENTION U.S. Patent Nos. 4,578,103 Fackelman and 4,615,724 Fackelman disclose glass sheet formation wherein a hot glass sheet is suspended by a top support device by a face down face thereof by providing a vacuum and pressurized air to the surface. This suspension of the hot glass sheet is without any contact between the upper surface of the glass sheet and the REF: 25465 face down surface of upper support device, such that it is possible for the surface of the upper glass sheet to be painted without damaging or scratching the paint as it might take place with such contact. Fixed stops are described on the downward facing surface of the top support device, to provide for the positioning of the glass sheet before it is released by the termination of the vacuum, to fall downwardly on a mold * for education. Such fixed stops are not capable of slowly slowing the glass sheet as it is moved to the proper place or for registration with the mold, for formation after being released from the top support device, by completion of the vacuum supplied to the surface face down. It is disclosed that vacuum and pressurized air are provided through associated passages defined in a fused silica block, bonded by sintering which defines the surface face down and has good resistance to thermal distortion. U.S. Patent No. 5,002,599 to McMaster et al. Discloses another top support device having a high temperature metal plate construction for suspending a hot glass sheet by providing pressurized gas and a vacuum of a surface face down, as the top support device, fused silica block type. U.S. Patent Nos. 4,775,404 to Klempner et al., And 5,090,989 to Adoline, disclose mold-mounted fasteners or fixers for placing a hot glass sheet on the downward facing surface of a top support device, such that the termination of the vacuum applied to the device allows the suspended glass sheet to fall on the mold for forming. US Pat. No. 5,066,321 to Kramer et al. Discloses fasteners for glass sheets mounted on a top support device, and having longitudinal and transverse actuators to provide longitudinal and transverse movements which the glass sheet is placed on. the face down face of the device in preparation to be released on a lower mold, for formation.

US Patent No. 5,096,478 to Kramer et al. Discloses an air conveyor for crucibles that is inclined downwardly along the direction of transportation and includes a pair of continuous chains on each side of the conveyor to move the poles of restriction that restrict the movement of the glass sheet under the force of gravity.

DESCRIPTION OF THE INVENTION An object of the present invention is to provide a system for forming glass sheets having an improved mounting assembly for a top support device. By carrying out the previous objective, a glass sheet forming system constructed in accordance with the invention, is used in a factory that has an ambient temperature and includes a housing that defines a heated chamber that is heated above the ambient temperature of the factory, sufficiently to allow the formation of the glass sheet. A conveyor is provided within the hot chamber to horizontally transport a hot glass sheet to be formed along a conveying direction. A top support device, the forming system, is placed inside the hot chamber and has a downward facing surface that is inclined downward along the transportation direction and has vacuum and pressurized gas supplied to it. this to provide suspended float downwardly of the hot glass sheet, after being received from the conveyor. The mounting assembly of the glass sheet forming system includes a support that is mounted outside the housing, and is at the factory ambient temperature. This mounting assembly includes a horizontal arm mounted by the support, and extending through the housing towards the hot chamber. The first and second fasteners of the horizontal arm place the sheet of glass suspended below the support device of the upper part, in a thermally stable location. A third fastener of the fixing or positioning assembly cooperates with the first and second fasteners for placing the glass sheet suspended below the lateral support device of the upper part, along and transversely with respect to the direction of transportation. A mold sleeve of the forming system supports a mold below the fixed glass sheet, suspended by the upper support device, to receive the glass sheet therefrom, for forming. The horizontal arm assembly that has the first and second fasteners on a support at room temperature of a factory, prevents thermal distortions adversely affect the placement of the sheet of glass suspended below the device support part higher. In the preferred construction of the glass sheet forming system, at least one of the first and second fasteners includes a rotary positioning member and a rotary actuator for rotating the rotary fastening member. As described, the first and second fasteners or setters each include a rotary fastening member and a rotary actuator for rotating its rotary fastening member. In addition, the first and second fasteners preferably have a common actuator for their rotary impellers, and this actuator for the rotary impellers of the first and second fasteners preferably has a connection to provide a mounting thereof on the horizontal arm of the fastening assembly in one place. outside the accommodation. In the preferred construction, the system for forming glass sheets includes a supply of pressurized water for moving the rotary positioning members of the first and second fasteners with upward direction in proximity with the downward facing surface of the support device the top The rotary fastening members of the first and second fasteners each include a vertically slidable guide >; on the horizontal arm and a ball connection to it. In addition, the rotary impeller of the first and second fasteners each include an actuator and a channel or channel driven by the actuator with respect to the horizontal arm, as well as including a cylindrical gear of straight denture which is placed on the rotation member. rotary associated and geared with the channel thereof, to be rotated by the movement of the channel. The geared relationship of the cylindrical straight gear and the channels is maintained during the vertical movement of the rotary fixing members with upward direction and downward direction under the pressurized air supply control. In each of the different embodiments described, one of the first and second fasteners on the horizontal arm is a rotary fixer for the placement of the glass sheet suspended along the direction of transportation, and for moving the transverse suspended glass sheet to the transportation address. The other first and second fasteners are mounted on the horizontal arm to provide fixation or placement of the suspended glass sheet, transverse to the conveying direction in cooperation with a rotary fastener, and in cooperation with the third fastener. The first fastener includes a rotary positioning fastening member and the second fastener includes a fastening member with each fastening member having a vertically slidable guide on the horizontal arm, and a ball connection thereto. The supply of pressurized air moves the fixing members of the first and second fasteners with upward direction in proximity with the downward facing surface of the upper support device. The first fastener includes a rotary impeller having an actuator and a channel driven by the actuator with respect to the horizontal arm as well as having a cylindrical gear of straight denture which is fixed on the rotary positioning means thereof, and meshed with the gutter of it to be rotated by the movement of the gutter. The geared relationship of the cylindrical straight gear and the channel of the first clamp is maintained during vertical movement of the rotary fastening member thereof, up and down under the control of the pressurized air supply. The positioning assembly of the glass sheet forming system includes an operating mechanism for moving the horizontal arm on which the first and second fasteners are mounted along and transversely to the direction and transportation as the glass sheet is received by the support device of the glass sheet, from the conveyor. This drive mechanism of the fixing assembly includes a guide or slide that extends along the direction of transportation, and another slide that extends transverse along the direction of transportation to cooperatively mount the horizontal arm on the support the which is at factory ambient temperature outside the hot chamber of the housing. Each slide includes a drive motor that provides the drive thereof, such that the horizontal arm and the first and second fasteners mounted thereon are moved along and transversely to the conveying direction according to the part support device. Top receives the glass sheet from the conveyor. "Two different modes of the conveyor are defined: In one embodiment, the conveyor is an air conveyor of crucibles that is tilted upwards along the direction of transportation and has a pusher that includes the fasteners that place the glass sheet on the conveyor. The conveyor This type of aerial crucible of the conveyor has a downstream end that includes a convex or convex section that transfers the glass sheet from the overhead conveyor of crucibles to the upper support conveyor according to the pusher and the fasteners of the conveyor. they are decoupled, and with this they release the sheet of glass. Yet another embodiment of the conveyor is described as a roller conveyor having rollers that support the glass sheet and rotate to provide transportation thereof along the conveying direction, until the glass sheet is transferred to the device of support of the upper part after moving out of engagement with the rollers, to be released from them. With both modes of the conveyor, the first, second and third fasteners of the positioning assembly confine the glass sheet after being released from the conveyor, for transfer to the top support device. " A construction of the glass sheet forming system, processes a pair of glass sheets during each fixing and forming cycle, and has its mounting assembly constructed to include a pair of horizontal arms by the support, and extending through of the hot chamber housing from opposite directions. Each horizontal arm has first and second associated fasteners, and the fastening assembly includes a pair of the third fasteners to cooperate respectively with the first and second fasteners of the pair of horizontal arms, to place the pair of glass sheets received by the fastener device. Support of the upper part from the conveyor. In this construction, the pair of glass sheets is transported and received by the support device of the upper part with elongated shafts thereof extending along the direction of transportation. Also, a central fixing assembly of the fixing assembly supports the pair of fixing clamps on the face down face of the support device of the upper part, between the pair of horizontal arms on which the first and second associated fasteners are mounted. . This central fastener assembly has an adjustable connection that provides "adjustable positioning of the pair of third-party fasteners on the downward facing surface of the upper support device." A mounting assembly places the central fastener assembly on the face facing surface. below the support device of the upper part with respect to the mold sleeve In its preferred construction, the mounting assembly of the fixing assembly includes a pair of first positioning or positioning members on the central fastener assembly and a pair of second positioning members on the mold sleeve The pair of first positioning members on the central fixing assembly is coupled by the pair of second positioning members on the mold sleeve, for positioning the central fixer assembly and the pair of third-party fasteners mounted on it, to fix the pair of glass sheets under the device support of the upper part after the movement of the mold sleeve below its surface facing downwards. More specifically, the pair of first positioning members are spaced apart on the central fastener assembly along the direction of transportation at the upstream and downstream sites, and the pair of second positioning members are spaced apart on the sleeve. mold along the direction of transportation at the upstream and downstream sites. The first and second placement members at the upstream sites are positioned lower than the first and second positioning members at the downstream sites, to allow movement of the mold sleeve along the direction of transportation, low and far. of the top support device on its downstream side. The form of the glass sheet forming system, designed to form a pair of glass sheets during each cycle, has each third fastener provided with an elongated construction extending along the direction of transportation. Each third fixative is made of boron nitride to have good lubricity at the high temperature involved with the formation of the glass sheet. In yet another practice of the invention, the glass sheet forming system processes a single glass sheet during each fixing and forming cycle, and the glass sheet is transported with a longitudinal axis thereof, extending transversely to the transport direction "With this formation system construction, the mounting assembly includes a pair of horizontal arms mounted by the support and extending through the housing in the hot chamber from opposite directions.One of these horizontal arms has first and second fasteners from the same, while the other horizontal arm has the third fastener and a fourth fastener mounted thereon, with all these fasteners inside the hot chamber, below the face down face of the upper support device. The first and third fasteners provide fixation or placement of the glass sheet below the top support device, along the conveying direction, and the first and third fasteners each include a rotary fastening member, and it has an actuator for rotating the rotary fixing member thereof, for moving the glass sheet transversely with respect to the conveying direction. The second and fourth fasteners cooperate to provide fixation of the glass sheet transversely to the conveying direction. Still another object of the present invention is to provide an improved method for fixing or placing a hot glass sheet. In carrying out the above objective, the method for attaching a hot glass sheet according to the invention is carried out by the initial transportation of the hot glass sheet horizontally along a conveying direction, at the which is supported from below inside a hot chamber that is at the glass forming temperature. The hot glass sheet is transferred to a downward facing surface that is inside the hot chamber, inclined downwardly along the conveying direction, and to which vacuum and pressurized gas are supplied to provide suspended float of the hot glass sheet, below the surface facing down. The suspended glass sheet is fixed below the face-down surface, inside the hot chamber by the first and second fasteners which are mounted by a support at the factory ambient temperature and which cooperate with a third fixer. In the preferred practice of the method, at least one of the first and second fasteners is rotated to fix the hot glass sheet below the surface facing downward and more preferably, the first and second fasteners are rotated both to fix the glass sheet below the surface facing down. The first and second fasteners are moved along and transversely to the conveying direction to fix the hot glass sheet below the face-down surface. In a practice of the method, the first, second and third fasteners, as well as a fourth fastener, are moved along and transversely with respect to the direction of transportation, to fix the hot glass sheet below the face surface toward down. More specifically, the first and third fasteners provide fixation of the glass sheet suspended along the conveying direction, and are rotated to provide a movement thereof transverse to the conveying direction, and the second and fourth fasteners provide fixing the glass sheet transversely to the direction of transportation. The objects, features and advantages of the present invention are readily apparent from the following detailed description of the best embodiments for carrying out the invention, when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIGURE 1 is a side elevation view in schematic format illustrating a glass sheet forming system constructed in accordance with the present invention; FIGURE 2 is a top plan view taken along the direction of line 2-2 in FIG. 1, to illustrate the manner in which a pair of glass sheets to be formed are transported inside a hot chamber defined by the system housing, along a conveyor which is of air crucible; FIGURE 3 is a side elevation view taken along the direction of line 3-3 in FIG. 2, to further illustrate transportation. FIGURE 4 is a top plan view taken in the same direction as FIG. 2, and illustrates the manner in which the glass sheets are transferred from the conveyor to a top support device, for the suspended float turned downward, as well as "also illustrate a fastening assembly that fixes the sheets of FIGURE 5 is a side elevational view taken along the direction of line 5-5 in FIG 4, to further illustrate the manner in which glass sheets are transferred to and affixed below the device FIGURE 6 is a top plan view taken in the same direction as FIGS 2 and 4, to illustrate the glass sheets after the final fixation of the same, by means of the fixing assembly of the FIGURE 7 is a side elevational view taken along line 7-7 in FIG 6, to further illustrate the manner in which the glass sheets are transferred to fixed below the device. top support; FIGURE 8 is an elevation view similar to FIG. 7, but illustrating yet another construction wherein the conveyor is a roller conveyor as opposed to one of the air crucible type as illustrated in FIGS. 1-7; FIGURE 9 is a view similar to the ' FIG. 6, which illustrates yet another construction in which a single sheet of glass is fixed below the support device of the upper part, by means of the fixing assembly with its longitudinal axis extending transversely with respect to the direction of transportation, as opposed to along the direction of transportation, as is the case when a pair of glass sheets are fixed in the manner illustrated by FIGS. 2-7; FIGURE 10 is a cross-sectional view taken through the forming system along the direction of line 10-10 in FIG. 1, to illustrate the construction of the housing of the forming system, the upper support device, the mounting assembly, and the mold sleeve; FIGURE 11 is a top plan view taken along the direction of line 11-11 in FIG. 10, to illustrate a horizontal arm of the mounting assembly of the training system; FIGURE 12 is an elevation view taken along the direction of line 12-12 in FIG. 11, to further illustrate the construction of the horizontal arm of the fixation assembly; FIGURE 13 is a perspective view, in section, illustrating the manner in which a mounting assembly of the forming system places a central fastener on the upper support device, with respect to a mold sleeve; FIGURE 14 is a sectional view taken along the direction of line 14-14 in FIG. 12, to illustrate a horizontal arm slide construction of the mounting assembly; and FIGURE 15 is a sectional view taken along the direction of line 15-15 in FIG. 11, to illustrate the manner in which the fasteners on the horizontal arm are moved vertically and rotationally actuated.

BEST MODALITIES FOR CARRYING OUT THE INVENTION C ^ n reference to FIG. 1 of the drawings, a system for forming glass sheets constructed in accordance with the invention, is indicated generally by the number 20 and will be described in an integrated manner with the method for fixing glass sheets for the present invention. This system 20 for the formation of glass sheets is placed or fixed within a factory on the floor 21 of the same, and includes a housing 22, a conveyor 24, a device 26 for supporting the upper part, a mounting assembly 28 for attaching a hot glass sheet for floating suspended face down on the upper support device 26, and a mold sleeve 30 movable between the positions indicated by continuous and discontinuous lines, by an appropriate actuator 32 such that one or more molds 33 thereon, receive a hot glass sheet from upper cutting device 26, for forming as described more fully hereinafter. type of full surface and, in the latter case, a vacuum can be provided to the surface of the mold to shape the hot glass sheet to the shape of its surface. scribe, the system also includes another mold 34 to which the sleeve 30 moves the glass for a pressing operation as described by U.S. Patent 5,004,491 to McMaster et al. After such pressing, the formed glass sheet is supported by a vacuum on the mold 34, as the sleeve 30 moves back towards the transfer device 26 from the top, for the next site, and as a supply or distribution the mold 36 is moved from the right to the left to receive the glass sheet from the mold 34, before the movement back to the right for the cooling of the glass sheet. With reference again to FIG. 1, the housing 22 of the system is insulated in a conventional manner and defines a hot chamber 37 which is heated above the ambient temperature of the factory, sufficiently to allow the formation of the glass sheet. This heating can be carried out in any conventional manner such as by heating by electrical resistance or by gas burns.

The conveyor 24 is fixed or placed inside the hot chamber 37 defined by the housing 22 as shown in FIG. 1, and is constructed to provide horizontal transportation of a hot glass sheet to be formed along a conveying direction illustrated by arrow C. The specific conveyor 24 illustrated is of the well-known aerial crucible type, which has a surface face up 38 to which pressurized gas is supplied to float the glass sheet * G to be formed. More specifically, the system 22 is constructed in a manner similar to the system described in U.S. Patent No. 5,098,478 to Kramer et al., Wherein a pair of endless transport turns 40 are respectively placed or fixed on each side portion of the housing 22 and they have lower conveyor bars 42 that move along the conveying direction shown by the arrows C, as well as have upper return bars 44 that move in the opposite direction to transportation. The pushers exemplified by the bars 46 extend between the transport turns 40 and the support member members 48, as well as the fasteners 50 as shown in FIG. 2, wherein the transportation is illustrated with a pair of glass sheets to be formed during each training cycle as described more fully hereinafter. In addition, the transport laps 40 also respectively support a pair of fasteners 52 for the placement of the pair of glass sheets G. The aerial conveyor 24 of crucibles as illustrated in FIG. 3 is inclined upwards along the direction of transportation shown by arrow C, with the inclination which is as illustrated to * approximately 1 °, such that there is an elevation of approximately one unit for every six units of horizontal transportation. During transportation, each pusher member 48 exerts a torque on the associated glass sheet G to maintain the coupling thereof with the fixator 50 with upward, internal, associated, and associated externally downwardly directed fixer 52. As illustrated in FIGS. 4 and 5, each glass sheet G is transferred from the aerial conveyor 24 of crucibles to the support device 26 of the upper part, in preparation for forming. At its downstream end, the aerial conveyor 24 of crucibles has a bulged section 54 whose upper surface 56 in the preferred embodiment has a radius of curvature of 26.67 meters (87.5 feet). However, at its upstream end, the bulged section 54 has a flat portion that is 7.62 centimeters (three inches) in length, and coplanar with the upper surface 38 of the aerial conveyor 24 of crucibles, as well as being tangent to the end upstream of the curved surface 56 to facilitate the transportation of the glass sheet on the. bulged section. Similarly, the downstream end of the bulged section 54 has a flat portion that is 15.24 cm (six inches) in length, and is tangent to the downstream end of the curved surface 56, as well as being parallel to the , but slightly lower than a surface 58 facing downwardly of the support device 26 of the upper part, as more fully described hereinafter. This bulged section 54 is 106.7 cm (forty-two inches) in length, such that its highest intermediate portion along the direction of transportation is approximately 0.3175 centimeters (1/8 inch), higher than its running ends. up and downstream, where the curvature begins and ends in the adjacent flat portions. With this construction, gravity acts on each sheet of glass to exert a force on them, in engagement with the pusher member 48, associated, until the center of gravity of the glass sheet is transferred beyond the highest portion of the surface 56, after which gravity then exerts a force on the glass sheet away from the pusher member 48, towards the device 26 of the upper part, for transfer thereto as described in more detail later in the present. As illustrated in FIGS. 5 and 7, the upper supporting device 26 has its downward facing surface 58 provided with a downward inclination along the transportation, with this inclination being Io as illustrated, for example, the same degree that the upward inclination of the aerial conveyor of crucibles previously described but, in the opposite direction. While this support device 26 of the upper part can be constructed from fused silica as described by US Pat. Nos. 4,578,103 to Fackelman and 4,615,724 to Fackelman, the specific, top-supporting support device used as shown in FIG. better illustrated in FIG. 13, is constructed from metal plates as described by U.S. Patent No. 5,002,599 to McMaster et al. More specifically, with reference continuously to FIG. 13, a lower metal plate 60 and an upper metal plate 62 cooperate with the side metal plates 64 to define a plenum chamber 66 to which pressurized gas is supplied for downward flow through a first group of holes 68 for the face down face 58, defined by the plate 60. The holes 68 can be provided with short tubes as described in Patent No. 5,002,599 to McMaster et al., previously mentioned, to facilitate the flow of pressurized gas from the impeller chamber 66 towards surface 58 face downwards. The tubes 70 inside the plenum chamber extend between the upper and lower plates 60 and 62, and have lower ends defining a second group of holes 72 in the lower plate surface 58, dispersed with the first group of holes 68 on the extension of the top support device. These tubes 70 have upper ends which are communicated through holes 74 in the upper plate 62 with a vacuum chamber 76 cooperatively defined by the upper plate 62, an additional upper plate 78, and side plates 80. In this way, the pressure and a vacuum are provided to the downward facing surface 58 of the plate 60, to provide the suspended flow upside down of each heated glass sheet G, after being received by the device support 26, from the upper part, from the conveyor 24. As illustrated in FIGS. 4, 6 and 10, the "mounting assembly 28 includes a support 82 which is mounted outside the housing 22, and is thus at the factory ambient temperature instead of the elevated temperature, necessary to provide the formation of the glass sheets As such, this support 82 is not subject to thermal distortion as is the housing 22 and is thus capable of providing a fixed location from where the fixing or placement takes place. 10, the support 82 is exemplified by a pair of vertical posts 83 extending upwardly from the factory floor 21 on opposite sides of the system housing 22. In addition, the illustrated embodiment processes a pair of glass sheets for fixing and forming them during each cycle, and the mounting assembly 28 includes a pair of horizontal arms 84 having generally Y-shaped internal ends, as well as external ends. ptivamente mounted by the pair of posts 83 of the support 82, as described more fully hereinafter. Each horizontal arm 84 extends through the housing 22 into its hot chamber 37 at a site just below the top device 26, as best illustrated in FIG. 10. These "horizontal arms 84 extend toward the housing 22 from the opposite directions through the slots 86, between the housing mounted in the wire brushes 88 and 90, upper and lower, which reduce the heat loss, while allow the movement of the horizontal arms as described hereinafter An appropriate frame or structure not shown in FIG 10 supports the insulated housing 22, above and below the side slots 86, at spaced apart locations up and downstream from the illustrated site As shown in FIGS.4 and 6, each horizontal arm 84 has first and second fasteners 92 and -94 on its Y-shaped internal end, for fixing or laying the sheet of glass G, suspended, associated, below the support device 26 of the upper part, in a thermally stable location or location, In addition, a third fixator 96 of the fixing assembly cooperates with each group of first and second fasteners 92 and 94, for fixing or placing the associated suspended glass sheet G, below the support device 26 of the upper part, along and transversely with respect to the direction of transportation, illustrated by the arrow C. The sleeve 30 of the mold moves as shown in FIG. 1, between the positions indicated by the continuous and discontinuous line, to receive a hot glass sheet from the support device 26 of the upper part, after a reduction or complete completion of the vacuum supplied thereto, as previously described. Proper attachment of the glass sheet below the top support device, together with the precise placement of each mold, thus ensures adequate registration or alignment of the glass sheet for the desired formation. The sleeve 30 of the mold, as shown in FIG. 10, is supported by the slides 98 which are positioned outside the housing 22, and are thus at the factory ambient temperature, such as the support 82. More specifically, the sleeve 30 is constructed in the manner described, by the Patent US No. 5,230,728 to McMaster, with the legs 100 extending upwardly through the slots 102 in the floor of the housing 22. These slots 102 extend along the direction of transportation, to allow movement of the hose as described above, under the control of your actuator. The sleeve 30 includes a substructure or sub-frame 104 supported by the legs 100 within the hot chamber 37 of the housing 22. The spline and guide connection 106 as described by the aforementioned US Patent No. 5,230,728 to McMaster supports a mold structure 108 of the sleeve, with a thermally stable reference placement. In this way, each mold 33 mounted by the mold frame 108 is precisely positioned on the sleeve 30. As the mold 33 receives the glass sheet from the support device 26 of the upper part after reduction or complete completion from its vacuum, the precise fixing of the glass sheet by the fixing assembly 28 thus provides accurate registration with respect to the mold 33 to ensure the formation of the desired shape. As best illustrated in FIGS. 11, 12 and 15, at least one, and as illustrated, preferably the first and second fasteners 92 and 94 on each horizontal arm 84 each include a rotary fastening member 110 and a rotary actuator 112 to provide rotation thereof in the directions shown by the curved arrows 114. The fasteners 92 and 94 are each coupled to the adjacent edge of the glass sheet, such that. the rotation of the fixator moves the glass sheet towards the other fixator, to ensure proper positioning thereof in cooperation with the third fixator 96. In addition, the first and second fasteners 92 and 94 preferably have an actuator 116 shown in FIGS. 11 and 12 for its rotary impellers 112. This actuator 116 has a connection 118 exemplified by a clamp and bolt as illustrated in FIG. 12 to provide mounting thereof on the horizontal arm 84 of the fixing assembly 28 at a site outside the housing 22. More specifically, the connection 118 mounts the actuator 116 on the inner side of the horizontal arm 84, as illustrated. This actuator 116 is constructed as a cylinder whose piston connecting the rod 120 is moved back and forth by the compressed air and delivered to the opposite sides of the piston within the cylinder of the actuator. A connection junction 122 extends between the actuator rod 120 and the rotary impellers 112 and the fasteners 92 and 94, to provide actuation thereof as is more fully described hereinafter. As illustrated in Figures 11, 12 and 15, the horizontal arm 84 has a hollow interior 124 through which pressurized air is supplied from a source 126 via a flexible conduit 128. This pressurized air supplied to the rotary fixing members. 110 of each fastener, to provide upward movement thereof, as illustrated in FIG. 15, in proximity with the surface 58 facing downwards of the support device of the upper part, to ensure the coupling thereof with the edge of the glass sheet to be fixed. The flow of air through the horizontal arm 84 provides preheating thereof before reaching the fasteners, and thereby reduces the cooling of the fasteners, which work best at the glass forming temperature. Also, the additional preheating of the pressurized air can be carried out firstly by passing it through a tube, such as a tube in the form of a coil, mounted on the horizontal arm on its lower side, before the introduction into the interior of the horizontal arm for the flow of the rotary fixing members. With continuous reference to FIG. 15, each of the rotary fixing members 110 of the first and second fasteners as illustrated by the "second fastener 94 shown, includes a vertically slidable guide 130 on the horizontal arm, and has a ball connection 132 thereto to allow the movement guided upwards and downwards, as well as any necessary angular movement of the fixing member, to ensure positioning in close proximity thereof with respect to the surface 58. The horizontal arm 84 has an annular ring 134 mounted thereon, and received inside an annular skirt 136 of the rotary fixing member 110. This ring 134 and the skirt 136 cooperate in a telescopic relationship to allow the up and down moment of the rotary fixing member 110 under the impetus of the pressurized air supplied from the interior 124 of the arm, through a passage 138 and the holes 140 inside the ring 134. With combined reference to FIGS.11 and 12, the rotary impellers 112 of the first and second fasteners 92 and 94 ,. each includes an actuator which, as described above, is preferably exemplified by the common actuator 116 in cooperation with the joint 122 and each also includes a toothed trough 142 which is moved by the actuator in cooperation with the joint "with with respect to the horizontal arm 84. More specifically, the union 122 has a link 143 with a pivotal connection 144 to the piston connecting rod 120 of the cylinder-like actuator 116. An adjuster 146 of threaded length of the union 122 is connected to the link. 143 and to a link 147 to provide a length adjustment of the joint 122 by providing the connection between the actuator 116 and the channels 142. The link 147 extends from the adjuster 146 and has a connection 148 as shown in FIG. 12 to a pivot link 150 with a pivot connection 152 that provides support thereto below the horizontal arm 84. The pivot connection 152 also extends upwardly through the horizontal arm 84 to a link 154 in shape of V which is supported as shown in FIG. 11 above the horizontal arm 84 and pivoted under the momentum of the joint 122 by the actuator 116. One arm 156 of the V-shaped link 154 has a connection 158 to another link 160 which has a pivot connection 162 to the chute toothed 142 associated with the first fastener 92. A second arm 164 of the V-shaped link 154 has a connection 166 to an end of a link 168, the other end of which has a pivot connection 170 to the toothed channel 142 which is associated with the second fixator 94. The rotatable guides 172 are mounted on the horizontal arm 84 in cooperative pairs as illustrated in FIG. 11 with the channels jaws 142 movably supported therebetween, adjacent to first and second fasteners 92 and 94. As illustrated in FIG.15, each rotary fastener member 110 has a cylindrical, straight tooth gear 174 that is mounted on skirt 136 thereof, and meshed with the serrated gutter 142. This meshing relationship of the cylindrical straight gear 174 with the associated toothed gutter 172 is maintained during vertical movement of the rotary fastening member 110 of the associated fastener, with upward and downward direction between the positions indicated by the continuous and discontinuous line, under the control of pressurized air supplied as previously described. that the gutter and the straight-cylindrical cylindrical gear-driven construction / connection for the rotation of the fasteners is preferred, other types of rotary drive may also be used such as, for example, driving by a cable which is wound around the fixator, and has ends that extend outwardly such that they can be pulled to provide rotation, etc. As shown in FIGS. 4, 10 and 12, the fixing assembly 28 includes a drive mechanism 176 for the movement of each horizontal arm 84 on which the first and second fasteners 92 and 94 are mounted along and transversely to the conveying direction as shown in FIG. illustrated by each arrow 138 in FIG. 4. This movement of the horizontal arm 84 and the first and second fasteners 92 and 94 thereon take place as the associated glass sheet G is received by the support device 26 from the top part of the conveyor 24. The speed of movement of the horizontal arm 84 along the direction of transportation is approximately equal to the speed of the glass sheet on the conveyor, such that there is a relative slow approach speed, and therefore smooth initial coupling between the fasteners and the glass sheet G, under the force of gravity as previously described. As best illustrated in FIGS. 10 and 11, the driving or driving mechanism 176 of the fixing assembly 28, associated with each horizontal arm 84, includes a slider 180 which "extends along the direction of transfer of the glass sheet, and also includes another Slider 182 extending transversely to the conveying direction of the glass sheet such that the slides cooperatively mount the associated horizontal arm on the support 82, which is at factory ambient temperature A slide 180 includes a drive motor 184 (FIG 10) that provides actuation thereof on the side of the direction of transportation of the glass sheet, while the other slide 182 includes a drive motor 186 that provides drive transverse to the direction of transportation. More specifically, the drive mechanism 176 is suspended below a pair of beams 188 extending longitudinally on the upper end of the associated support post 83, with an upper slide 180 directly suspended from these beams and with the other outer slide 182 suspended from the upper slide. The operation of the drive motors 184 and 186 thus provides the movement of the associated horizontal arm 84, along and transversely of the conveying direction, in a manner that allows the glass sheet G to be received by the device. of the upper part to be confined by the fasteners thereof, as more fully described hereinafter. As previously described in connection with FIGS. 1-7, the illustrated embodiment of the conveyor 24 is an overhead conveyor crucibles is inclined upward direction along the transporting direction and has a pusher exemplified by worship 48 pushed members of the pusher bar 46, and as the fasteners 50 and 52 which cooperate with the pusher members to fix each sheet of glass as it is moved along the conveyor 24, for transfer to the top support device. As also mentioned previously, the air conveyor 24 of crucibles has a downwardly directed end that includes a bulged section 54 as shown in FIG. 5, to transfer the glass sheet from the overhead crucible conveyor to the upper support device, as the pusher and the conveyor fasteners are uncoupled, and with this release the glass sheet as its center of gravity moves on the highest portion of the surface 56 of "this bulged section, as previously described." With reference to FIG 8, the forming system 20 is illustrated herein with yet another embodiment of the conveyor 24 which is constructed as a roller conveyor having rollers 25 that support the glass sheet and rotate to provide transportation thereof along the transfer direction shown by arrow C until the glass sheet is transferred to the support device 26 of the part This roller conveyor 24 't, after being moved out of the coupling with the roller, to be released from it, by means of such uncoupling. It has its end adjacent to the support device 26 of the upper part, provided with the roller 25 positioned so that the glass sheet is transported with a slight downward inclination along the direction of transportation. This downward inclination is of the same degree as the downward inclination of the surface 58, thereby facilitating the transfer of the glass sheet from the roller conveyor 24 'to the supporting device 26 of the upper part. Regardless of whether the conveyor is of the aerial type of crucibles as shown in FIGS. 1-' 7, or of the type of rollers as shown in FIG. 8, the first, second and third fasteners 92, 94 and 96 confine the associated glass sheet after being released by the conveyor, for transfer to the support device of the upper part, so that the glass sheet can not move out of position. With reference to FIGS. 4, 6 and 10, the glass sheet forming system as illustrated in this embodiment and as previously mentioned, is constructed to transport and transfer a pair of glass sheets G, to the support device 26 of the upper part, for the formation at the same time that each of the others are respectively received by the pair of molds 33 on the mold sleeve 30. further, the pair of horizontal arms 84 are mounted by the support 82 on opposite sides of the housing 22 of the system, as best shown in FIG. 10, and extends through the housing to the hot chamber 37 as previously described, such that the first and second associated fasteners 92 and 94 on it, are fixed below the downwardly facing surface 58 of the supporting device 26. of the upper part, as previously described to "provide fixation of the glass sheets." Furthermore, the fastening assembly 28 as also previously described, includes a pair of the third fixing fasteners 96 to cooperate respectively with the first and second fasteners 92. and 94 of the horizontal arm pair 84, for fixing a pair of glass sheets received by the support device 26 of the upper part, from the conveyor, either of the air crucible or roller type as previously described. Combined with FIGS 6, 10 and 13, the glass sheet forming system is illustrated including a central fixer assembly 190, which supports the pair of third-party fasteners 96 on the downward facing surface 58 of the support device 26 of the upper part, between the pair of horizontal arms 84 on which the first and second associated fasteners 92 and 94 are mounted, as previously described. More specifically, the central fastener assembly 190 has an adjustable connection 192 (FIG.13) which provides adjustable positioning of the pair of fasteners 96 on the downward facing surface 98 of the upper support device. In addition, a placement assembly 194 places the central fixation assembly 190"on the downwardly facing surface 58 of the support device 26 at the top, with respect to the sleeve 30 of the mold and, more specifically, with respect to each mold of the mold. The adjustable connection 192 of the central fixation assembly 190 includes an elongated plate 196 extending longitudinally with respect to the direction of the transport of glass sheets to the side of the arrow C with the third fixing means 96 mounted on their opposite sides. The upper side of the plate 196 supports a pair of pins 198 in the upstream and downstream positions Each key 198 has an enlarged headspace above the elongated plate 196. The lower metal plate 60 of the support device 26 of the upper part includes a pair of L-shaped keyholes or keyholes 200, whose rods extend transversely with respect to the direction transporting the glass sheets, along the direction of the arrows C. Appropriately illustrated closures 201, on the upper side of the lower plate 60 isolate the lock eyes 200 from the plenum 66, of so that the pressurized gas in it does not flow therefrom through the eyes towards the face down face 58 of the bottom plate. The keyhole bases 200 are large enough to receive the heads of the pins 198 after the upward movement of the central fixing assembly with respect to the supporting device 26 of the upper part, after which the lateral movement of the same transverse to the direction of transportation of the glass sheet, along the arrows C, places the keys into the rods of the lock eyes, as illustrated. The positioning assembly 194 adjustably places the central fixation assembly 190 on the support device 26 of the upper part, in the proper transverse position, with respect to the mold sleeve 30, and each mold thereon as described more fully later in the present. As illustrated by continuous reference in FIG. 13, the positioning assembly 194 includes a pair of first positioning members 202 and 204 on the central fixing assembly placed on the underside thereof., below the upper side where the keys 198 are mounted. The positioning assembly 194 also includes a pair of second positioning members 206 and 208 on the mold structure 108 of the mold sleeve 30. A pair of first positioning members 202 and 2.-4 on the central fixing assembly 190, are engaged by the pair of second positioning members 206 and 208 on the mold sleeve 30, after the movement of the mold sleeve below the mold. support device 26 of the upper part, for placing the central fixation assembly 190 and the pair of third fixing fasteners 96 mounted on opposite sides thereof, for fixing the glass sheets underneath the upper support device therewith. This placement is in a transverse position with respect to the direction of the transportation of glass sheets through the system.

As illustrated, each of the first positioning members 202 and 204 on the central fixing assembly 190, has a grooved or grooved construction which can include rollers on each side thereof, and each of the pair of the second positioning member 206 and 208 on the mold structure 108 of the sleeve 30, has a pointed leg construction to be received by the slot-like positioning member, associated with the central mounting assembly. Of course, it should be appreciated that other constructions of the positioning members are possible, and that with the illustrated constructions it is possible to invert the relative positions of the slot-type and tip-type positioning members on the central fixing assembly and the mold sleeve. As also illustrated in FIG. 13, the pair of first positioning members 202 and 204 are spaced apart on the central mounting assembly 190 along the transportation direction illustrated by arrow C at the upstream and downstream sites. In addition, the pair of second positioning members 206 and 208 are spaced in the mold sleeve 30 along the conveying direction illustrated by the arrow C at the upstream and downstream sites. The first and second positioning members 202 and 206 at the upstream sites are fixed lower than the first and second positioning members 204 and 208 at the upstream and downstream sites to allow movement of the sleeve 30 of the mold throughout. of the transportation direction under and away from the support device 26 from the top on its side with downward direction. As shown in FIG. 13, each of the third fasteners has an elongated construction that extends along the conveying direction, and is mounted in an appropriate manner on the adjacent side of the mounting plate 196 of the central fastener. each third fastener 96 has an elongated construction that extends along the conveying direction with a plate conformation, and is made of multiple pieces 210 having side edges that engage the associated glass sheet G to provide the fixation. More specifically, each fixing part 210 and therefore each third fixator 96 is preferably made of boron nitride to have good lubricity at elevated temperatures.The boron nitride used can be essentially pure boron nitride or can also include some silica to have greater resistance to wear With reference to FIG 9, the system 20 for forming glass sheets, co As illustrated herein, it is constructed to transport and fix a single sheet of glass G on the support device 26 of the upper part by the fastening assembly 28 'which has a slightly different construction than the "mounting assembly" previously. described. More specifically, this fastening assembly includes a pair of horizontal arms 84 and 84a mounted by the support 82 at the factory ambient temperature, and extending through the housing 22 to the hot chamber 37 from opposite directions. One of these horizontal arms 84 has first and second fasteners 92 and 94 thereon, which are both preferably rotatable in the same manner previously described as illustrated by arrows 114. The other horizontal arm 84a has the third fastener 96 and a fourth fixator 97. The third and fourth fixators 96 and 97 are also preferably generally placed in the same manner previously described, except for the fact that the third fixator 96 rotates away from the fourth fixator 97 in a manner contrary to the first and second fixators. and 94 that turn towards each other. In this way, the first and third fasteners 92 and 94 provide fixation of the glass sheet G along the conveying direction illustrated by the arrow C as gravity forces the glass sheet against these fasteners due to the inclination toward down the face-down surface of the top support device, as previously described. In addition, the second and fourth fasteners 94 and 97 provide fastening of the glass sheet transversely with respect to the conveying direction shown by the arrow C. The horizontal arm 84a in addition to providing the fastening along and transversely with respect to the direction of the glass sheet by its second fixator 96, moves the glass sheet towards the horizontal arm 84 such that after final placement there may be a slight spacing of the glass sheet from the fixer 97 after full coupling thereof with the second fixator 94. While the best embodiments for carrying out the invention have been described in detail, those familiar with the technique to which the present invention relates will recognize various alternative designs and embodiments for practicing the invention as defined by the invention. following claims.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (26)

1. A system for the formation of glass sheets, for the use of a factory having an environmental temperature of the factory, the system for forming glass sheets is characterized in that it comprises: a housing that defines a hot chamber that is heated above of the ambient temperature of the factory, sufficiently to allow the formation of the glass sheet; a conveyor inside the hot chamber for horizontally transporting a hot glass sheet to be formed along a conveying direction; a top support device positioned within the hot chamber and having a downward facing surface that is inclined downwardly along the conveying direction, and to which vacuum and pressurized air are supplied to provide float suspended upside down from the hot glass sheet after being received from the conveyor; a fastening assembly including a bracket that is mounted outside the housing, and that is at the factory ambient temperature, said fastening assembly includes a horizontal arm mounted by the bracket and extending through the housing toward the heated chamber , and having first and second fasteners for fixing the sheet of glass suspended below the top support device in a thermally stable site and third fixer to cooperate with the first and second fasteners for fixing the sheet of glass suspended below of the support device of the upper part along and transversely with respect to the direction of transportation; and a mold sleeve for supporting a mold below the fixed glass sheet, suspended by the upper support device, for receiving the glass sheet thereof, for forming.

2. A glass sheet forming system according to claim 1, characterized in that at least one of the first and second fasteners includes a rotary fastening member and a rotary impeller for rotating the rotary fastening member.

3. A glass sheet forming system according to claim 1, characterized in that the first and second fasteners each include a rotary fastening member and a rotary impeller for rotating its rotary fastening member.

4. A glass sheet forming system according to claim 3, characterized in that the first and second fasteners have an actuator for their rotary impellers.

5. A glass sheet forming system according to claim 4, characterized in that the actuator for the rotary impellers of the first and second fasteners has a connection to provide mounting thereof on the horizontal arm of the fastening assembly at a location outside the accommodation.

6. A glass sheet forming system according to claim 3, further characterized in that it includes a supply of pressurized air for moving the rotary fixing members of the first and second fasteners upwards in proximity to the downward facing surface of the device. support of the upper part.

7. A glass sheet forming system according to claim 6, characterized in that the rotary fastening members of the first and second fasteners include each guide vertically slidable on the horizontal arm and a ball condition thereto, the rotary impeller of the first and second fasteners each include an actuator and a channel driven by the actuator with respect to the horizontal arm, as well as including a cylindrical gear of straight teeth which is placed on the associated rotary fixing member, and meshed with the channel thereof to be rotated with the movement of the channel, and the indented relationship of the cylindrical gears and the channels are maintained during the vertical movement of the rotary fixing members with upward direction and with downward direction under the control of the pressurized air supply . 33

8. A glass sheet forming system according to claim 1, characterized in that one of the first and second fasteners is a rotary fastener for the placement or fixation of the glass sheet suspended along the direction of transportation, and for the movement of the glass sheet suspended transversely to the conveying direction, and the other of the first and second fasteners is mounted on the horizontal arm to provide fixation of the glass sheet suspended transversely to the conveying direction in cooperation with a rotary fastener and in cooperation with the third fixator.

9. A glass sheet forming system according to claim 8, characterized in that the first fastener includes a rotary fastening member and the second fastener includes a fastening member, each fastening member having a vertically sliding guide on the horizontal arm and a ball connection thereto, a supply of pressurized air for moving the fastening members of the first and second fasteners with upward direction in proximity to the downward facing surface of the top holding device, the first fastener including rotating impeller having an actuator and a channel driven by the actuator with respect to the horizontal arm, as well as having a cylindrical gear of straight denture which is placed on the rotary fixing member thereof, and meshed with the channel thereof to be rotated by the movement of the channel in the meshed relation of the cylindrical gear co and the channel of the first fastener is maintained during the vertical-movement of the rotary fastening member thereof, with an upward direction and with a downward direction under the control of the pressurized air supply.

10. A glass sheet forming system according to claims 1, 3, 7 or 8, characterized in that the fixing assembly includes a drive mechanism for moving the horizontal arm on which the first and second ones are mounted along and transversely to the transportation direction, as the glass sheet is received by the upper support device from the conveyor.

11. A glass sheet forming system according to claim 10, characterized in that the drive of the fixing assembly includes a slide that extends along the direction of transportation and another slide that extends transversely to the direction of transportation , to cooperatively mount the horizontal arm on the support which is at the ambient temperature of the factory, and each slide includes a drive motor that "provides the same drive as the horizontal arm and the first and second fasteners mounted on they move along and transversely of the conveying direction as the support device of the upper part receives the glass sheet from the conveyor.

12. A glass sheet forming system according to claim 10, characterized in that the conveyor is selected from the group consisting of: (a) an air conveyor of crucibles that is inclined upwardly along the direction of transportation and has a pusher including fasteners that place the glass sheet on the conveyor, and the overhead crucible conveyor has a downstream end that includes a bulged section that transfers the glass sheet from the overhead crucible conveyor to the supporting device from the top conforming, the pusher and the fasteners thereof are uncoupled, and thereby release the glass sheet and (b) a roller conveyor having rollers supporting the glass sheet and which rotate to provide for the transportation of the glass sheet. the same, along the direction of transportation, "until the glass sheet is transferred to the sopor device The upper part after moving out of engagement with the rollers, to be released from them; and the first, second and third fixation fasteners of the fastening confine the glass sheet after being released by the conveyor for transfer to the top support device.

13. A glass sheet forming system according to claim 12, characterized in that the fixing assembly includes a pair of horizontal arms mounted by the support and extending through the housing towards the hot chamber from opposite directions, each horizontal arm has first and second fasteners, and a pair of third fasteners to cooperate respectively with the first and second fasteners of the pair of horizontal arms, to fix a pair of glass sheets received by the upper support device from the conveyor.

14. A glass sheet forming system according to claim 13, characterized in that the fixing assembly further includes a central fixing assembly that supports the pair of fixing clamps on the downward facing surface of the upper support device , between the pair of horizontal arms on which the first and second associated fasteners are mounted.

15. A glass sheet forming system according to claim 14, characterized in that the central fixing assembly has an adjustable connection that provides adjustable positioning of the pair of fixing clamps on the fixing surface with downward direction of the part support device. upper, and a positioning assembly that places the central fastener assembly on the downward facing surface of the upper support device, with respect to the mold sleeve.

16. A glass sheet forming system according to claim 15, characterized in that the positioning assembly includes a pair of first positioning members on the central fixing assembly, and a pair of second positioning members on the mold sleeve, and the pair of first positioning members on the central fixing assembly is coupled by the pair of second positioning members on the mold sleeve, to place the central fixing assembly and the pair of third fixing clamps mounted thereon, to fix the pair of glass sheets below the top support device.

17. A glass sheet forming system, according to claim 16, characterized in that the pair of first positioning members are spaced over the central fixing assembly along the direction of transportation in upstream and downstream locations, the pair of second positioning members are separated on the mold sleeve along the direction of transorting sites running up and downstream, and the first and second positioning members at the upstream sites are placed lower than the first. and second positioning members at the downstream sites to allow a movement of the mold sleeve along the conveying direction, low and far from the top support device on its downstream side.

18. A glass sheet forming system according to claim 17, characterized in that each third fastener has an elongated construction that extends along the direction of transportation.

19. A glass sheet forming system according to claim 18, characterized in that each third fixer is boron nitride.

20. A glass sheet forming system according to claim 11, characterized in that the fixing assembly includes a pair of horizontal arms mounted by the support, and extending through the housing towards the hot chamber from opposite directions, one of the horizontal arms have the first and second fasteners on it, the other horizontal arm has the third fastener and a fourth fasteners mounted on it, the first and third fasteners provide fixing of the glass sheet suspended below the support device from the top along the direction of 'transportation, the first and third fasteners include in each one a rotary fastening member and have an impeller for rotating the rotary fastening member thereof, for moving the glass pane suspended transversely with respect to the conveying direction, and the second and fourth fasteners cooperate to provide the fixation of the suspended glass sheet, transversely to the direction of transportation.

21. A method for fixing a hot glass sheet, characterized in that it comprises: transporting the hot glass sheet horizontally along a conveying direction, while being supported from below inside a hot chamber which is at the temperature of glass formation; the transfer of the hot glass sheet to a face down face that is inside the hot chamber and tilted downwardly along the conveying direction, and to which vacuum and pressurized gas are supplied to provide suspended float from the hot glass sheet below the surface facing down; and fixing the sheet of glass suspended below the face-down surface, inside the hot chamber by the first and second fasteners which are mounted by a support at the factory ambient temperature, and which cooperate with a third fixative.

22. A method for attaching a hot glass sheet according to claim 21, characterized in that at least one of the first and second fasteners is rotated to place or fix the hot glass sheet below the surface facing down.

23. A method for attaching a hot glass sheet according to claim 21, characterized in that the first and second fasteners are both rotated to fix or place the hot glass sheet below the surface facing down.

24. A method for fixing a hot glass sheet according to claim 21, characterized in that the first and second fasteners "are moved along and transversely to the conveying direction to fix the hot glass sheet below the face surface. down.

25. A method for fixing a hot glass sheet according to claim 21, characterized in that the first, second and third fasteners as well as a fourth fastener are moved along and transversely with respect to the direction of transportation, to fix the sheet of hot glass below the surface facing downwards.

26. A method for fixing a sheet of hot glass according to claim 25, characterized in that the first and third fasteners provide the fixing of the glass sheet along the direction of transportation, and are rotated to provide movement of the same transversely to the direction of transportation, and wherein the second and fourth fasteners provide the fixation of the glass sheet transversely to the direction of transportation.