• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    METHOD AND APPARATUS FOR POSITIONING A HEATED GLASS SHEET FOR FORMATION. It is a method and apparatus (54) for positioning glass sheets for forming which includes positioners (55) which are moved more slowly than the glass sheet transport speed to provide rotational adjustment of a glass sheet in alignment above a forming mold (52). The forming mold (52) is moved upwards for forming in a compacting manner against a downward facing upper mold (58). The smooth and preformed glass sheets can be positioned by different types of apparatus.
    公开号:BR112014009318B1
    申请号:R112014009318-0
    申请日:2012-10-05
    公开日:2020-12-22
    发明作者:David B. Nitschke；Dean M. Nitschke；Daniel P. Lechner
    申请人:Glasstech, Inc；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [001] This invention relates to a method and system for positioning glass sheets for forming and also involves the formation of glass sheets after positioning. BACKGROUND
    [002] The glass sheets after heating were previously formed by transporting on a lower roller bed to above a forming mold that is moved upwards to provide the formation, see US Patent 6,543,255. The roller bed may include wheels or, as disclosed in US Patent Application Publication No. 2011/0247367 entitled PRESS BENDING STATION AND METHOD FOR BENDING HEATED GLASS SHEETS by Dean M. Nitschke ET AL, may include elongated wheels and rollers that are selectively fixable and removable for rotational drive and positioning to provide the shape needed for the mold to move vertically from the bottom to the top of the conveyor to lift the heated glass sheet for forming. The aforementioned application and patent are hereby incorporated by reference. SUMMARY
    [003] An objective of the present invention is to provide an improved method for positioning a sheet of heated glass in relation to a forming mold for forming.
    [004] In carrying out the above objective, the method for positioning a sheet of heated glass in relation to a forming mold for forming is carried out by transporting a sheet of heated glass horizontally on a roller conveyor on a conveyor carrier in a transport direction along a route towards a vertically aligned position above a forming mold. A pair of positioners are moved along the direction of transport at laterally spaced locations in the path of the transported glass sheet and on a conveyor slower than the conveyor speed so that the transported glass sheet contacts the positioners by sufficient time to rotate the glass sheet on the roller conveyor to correct any rotation from a rotational design position in relation to the forming mold. The positioners are then moved along the direction of transport on a conveyor faster than the speed of the conveyor and the glass sheet being transported out of contact with them to allow the glass sheet to move in vertical alignment with the formation mold for formation.
    [005] As revealed, the carrier speed and the speed of the slow moving positioners are decelerated at the same rate before the positioners move faster than the carrier speed. In addition, after a deceleration of the carrier speed and the positioner speed at the same rate and before the positioners start moving faster than the carrier speed, the carrier speed continues to decelerate and the positioner speed accelerates until the speed of the carrier and the speed of the positioners are the same as the positioners come out of contact with the sheet of glass as the speed of the carrier continues to slow down and the speed of positioners continues to accelerate. In addition, the positioners come out of contact with the glass sheet at a location upstream a predetermined distance along the transport direction of the location where the glass sheet moves in vertical alignment with the forming mold.
    [006] The forming mold as disclosed is a peripheral forming mold that has an open center and includes an adjacent upstream portion whose movement of the positioners occurs within the open center of the peripheral forming mold. After coming out of contact with the glass sheet, the positioners are moved downwards and the glass sheet moves above the positioners towards a place where the periphery of the glass sheet moves above and in alignment with the forming mold. peripheral. The peripheral forming mold as disclosed is then moved upward in time and speed to lift the moving sheet of glass from the conveyor onto rollers for forming the sheet of glass. More specifically, the peripheral forming mold is moved upwards in a time and speed to lift the glass sheet of the carrier on rollers after the glass sheet has been transported a predetermined distance along the direction of transport subsequent to the positioners leaving contact with the glass sheet. An upper mold is revealed to be moved downwards and the glass sheet is formed by forming between the forming mold and the upper mold.
    [007] In a revealed practice of the method, the heated glass sheet is preformed before being transported in alignment with the forming mold and, in another revealed method practice, the heated glass sheet is transported with a flat shape in alignment with the forming mold.
    [008] Another objective of the present invention is to provide an improved apparatus for positioning a sheet of heated glass for formation.
    [009] In the execution of the immediately preceding object, the apparatus for positioning a sheet of heated glass for forming includes a roller conveyor for transporting a sheet of glass heated horizontally at a conveyor speed on a route along a direction of transport out from a heating furnace and away from the furnace and include a conveyor drive that drives the conveyor on rollers. The apparatus has an upward forming mold with an upward curved concave shape and an open center, and the apparatus also has a pair of laterally spaced positioners in a location along the transport direction in the path of the glass sheet carried in. from an open center of the forming mold adjacent to a downstream portion of the forming mold and the apparatus also has supports for the positioners to move vertically between an upper position to contact the glass sheet and a lower position that allows the glass sheet moves over the positioners. A device positioner drive moves the pair of positioners along the transport direction. A device controller operates the carrier drive and the positioner drive so that: (a) the pair of positioners is initially moved along the transport direction on a carrier slower than the carrier speed so that the sheet transported glass contact the positioners to provide rotational adjustment of the glass sheet; and (b) the controller subsequently moves the positioners faster than the conveyor speed and the glass sheet transported so that the positioners come out of contact with the glass sheet in preparation for the glass sheet moving over and in alignment vertical with the forming mold.
    [010] The revealed controller operates the carrier drive and the positioner drive so that the carrier speed and the positioner speed are accelerated at the same rate before the positioners move faster than the carrier speed. More specifically, the revealed controller operates the carrier drive and the positioner drive so that, after a deceleration of the carrier and the positioners at the same rate and before the positioners start moving faster than the speed of the carrier, the speed of the carrier continues to decelerate and the speed of the positioners accelerates until a carrier carrier and the speed of the positioners are the same as the positioners come out of contact with the sheet of glass as the speed of the carrier continues to decelerate and the speed of positioners continues to accelerate. In addition, the positioners come out of contact with the glass sheet at a location upstream a predetermined distance along the transport direction of the location where the glass sheet moves in vertical alignment with the forming mold.
    [011] The revealed forming mold has an open center and a peripheral shape that corresponds to the periphery of the glass sheet, the forming mold has an upstream portion, the pair of positioners is mounted inside the open center of the adjacent forming mold to its upstream portion and a mold actuator moves the forming mold upwards to lift the moving sheet of glass from the forming conveyor. The disclosed apparatus also includes a top mold that cooperates with the forming mold to compress the glass sheet.
    [012] The apparatus is revealed in one embodiment as having its carrier on rollers including rollers that provide a concave upward transport format for transporting a sheet of heated glass that is previously formed and, in another embodiment, the apparatus is revealed as having its roller conveyor including rollers that provides a smooth transport plane for transporting a smooth heated glass sheet for forming. BRIEF DESCRIPTION OF THE DRAWINGS
    [013] Figure 1 is a schematic side elevation view of a glass sheet compression forming system that includes positioning an apparatus for positioning a heated glass sheet in a forming mold to provide positioning and forming according to the present invention.
    [014] Figure 2 is a schematic cross-sectional view through the system taken along the direction of line 2-2 in Figure 1 at an outlet end of a system furnace and illustrates inclined, horizontal rollers on which sheets of heated glass are transported for initial roller formation before leaving the furnace in preparation for compression formation.
    [015] Figure 3 is a schematic cross-sectional view taken through the system along line 3-3 in Figure 1 at its forming or compression station to illustrate the construction of a lower forming mold provided by a ring and also illustrates the construction of a superior compression mold, the molds of which are movable between the positions indicated by solid and phantom line to bend by compression the glass sheet formed by roller initially.
    [016] Figure 4 is a view of another modality of the system whose positioning device positions and then forms a smooth glass sheet according to the invention.
    [017] Figure 5 is a cross-sectional view taken along the line 5-5 in Figure 4 to further illustrate the flat shape of the glass sheet during positioning prior to its formation.
    [018] Figure 6 is a perspective view of a mold forming the apparatus seen from a side upstream direction and showing the positioners in preparation for a positioning operation of a transported glass sheet.
    [019] Figure 7 is another view of the forming mold taken from a downstream side position and showing the positioners after movement along the transport direction to provide the positioning of a glass sheet transported in vertical alignment with the mold.
    [020] Figure 8 is a partial view taken similarly to Figure 6 showing an upper position of the positioners during the positioning of the glass sheet in relation to the mold.
    [021] Figure 9 is a view similar to Figure 8 that shows, however, a lower position of the positioners that allows the positioned glass sheet to move up and in vertical alignment with the mold after positioning.
    [022] Figure 10 is a schematic top plan view showing the manner in which a sheet of glass is rotated for positioning and vertical alignment with the forming mold for forming.
    [023] Figure 11 is a timing graph that illustrates the forming and positioning cycle by moving the carrier, moving the positioners and moving the forming mold upwards to perform the formation in a compression manner with a mold. associated superior. DETAILED DESCRIPTION OF PREFERENTIAL MODALITIES
    [024] With reference to Figure 1 of the drawings, a system for forming glass sheets is generally indicated by 10 and includes a forming station 12 whose construction and method of operation will be described in an integrated manner with the entire system to facilitate a understanding of different aspects of the invention.
    [025] With continued reference to Figure 1, system 10 includes a furnace 14 which has a roller forming station 16 just downstream along a transport direction C from the compression bending station 12. Upstream of compression forming station 12 along transport direction C, system 10 is illustrated as including a final processing station 18 in which the formed glass sheet can be slowly cooled for annealing or more quickly cooled by sudden cooling to provide reinforcement heat or temper.
    [026] As illustrated continuing with reference to Figure 1, the furnace 14 has inlet and outlet ends 20 and 22 and includes a heating chamber 24 (Figure 2) that has a carrier 26 for transporting glass sheets along the direction transport through the furnace from the inlet end to the outlet end for heating. The carrier 26 over which the glass sheets are heated can be either a conventional gas oven or a roller carrier over which the glass sheets are transported during heating from room temperature to a temperature high enough to allow formation, which it is also referred to as folding in the glass sheet industry.
    [027] The outlet end furnace 22 includes the roller forming station 16 which is illustrated in Figure 2 as having horizontally extending conveyor rollers 28 which are rotationally driven and separated horizontally within the heating chamber along the transport direction that extends laterally in relation to it to support the transport of the heated glass sheets. The roller forming station 16 also includes a pair of folding roller assemblies 30, wherein the folding roller assemblies 30 are separated from each other within the heating chamber 24 along the transport direction. Each set of folding rollers 30 is supported and rotationally driven by a drive mechanism 33 with the folding rollers at progressively increasing slopes along the transport direction as illustrated by the numerals 32a, 32b, 32c and 32d in Figure 2 Transporting each heated glass sheet G along the transport direction in cooperation with the folding rollers 32 provides initial formation of the glass sheet G along a direction transversal to the transport direction as illustrated in Figure 2. This formation provides the shape formed of the glass sheet with straight-line elements that can be parallel to each other in a cylindrical shape or at an angle to each other in a conical shape. Since each location of the glass sheet along the transport direction is folded from its flat shape, this fold also additionally folds the preceding location so that the final effect is a slightly tapered shape.
    [028] With a combined reference to Figures 1 and 3, the compression forming station 12, as previously mentioned, is located externally to the furnace 14 downstream of its outlet end 22 to receive the glass sheets initially formed from the forming station. of roller 16. More specifically, the compression forming station 12 includes a conveyor that has a lower wheel or roller bed 34 of the conveyor to receive a glass sheet initially formed to be further formed by 36 compression. The wheel bed bottom 34 includes a bottom base frame 38 and a plurality of carrier wheel assemblies 40. Each wheel assembly 40, as hereinafter more fully described, includes a housing 42 that has an upper end that includes a wheel 44 and that has a lower end that includes a removable connection 46 for removably connecting the wheel assembly to the base frame 38. A mechanism the drive wheel provides rotational drive of the wheel 44 of each wheel assembly 40 by connecting it to the lower base frame 38. For a more detailed description of the carrier and the drive mechanism, see US Patent No. 6,543,255 which was previously incorporated as a reference. In addition, it should be noted that the carrier, instead of having only wheel carrier assemblies, may also have elongated roller conveyor assemblies both horizontal and quanti inclined as revealed by US Patent Application serial number 12 / 756,521 filed in April 8, 2010 by Nitschke ET AL. with the title Press Bending Station And Method For Bending Heated Glass Sheets, the entire disclosure of which has been incorporated into this document as a reference.
    [029] As shown in Figure 3, a lower compression ring support 50 of the compression forming apparatus 36 supports a lower forming mold or compression ring 52 that has an upwardly concave shape and is received within the wheel bed 34 below the wheels 44 of the wheel carrier assemblies 40 in a ring shape thereof where no wheel assemblies are located. The construction of the lower compression ring is more fully described hereinafter. The positioning apparatus 54 of the system includes positioners 55 (Figures 6 to 10) that rotate a transported glass sheet G to provide alignment with the forming mold 52 for forming.
    [030] Also illustrated in Figure 3, an upper assembly 56 of the compression station 12 supports an upper compression mold 58 of the compression forming apparatus 36. This upper compression mold 58 has a downwardly facing convex forming face 60 to the concave shape above the lower compression ring 52.
    [031] A mold actuator collectively indicated by 62 in Figure 3 provides relative vertical movement between the lower compression ring 52 and the wheel bed 34 and between the lower compression ring and the upper compression mold 58 to move the foil. heated glass above the wheel bed and ultimately for compression engagement between the lower compression ring and the upper compression mold 58 to compression form the glass sheet as is more fully described hereinafter. As shown, the actuator not only moves the lower compression ring 52 upwards, but also moves the upper compression mold 58 downwards to cooperate with the lower compression ring to compress the glass sheet. Actuator 62 includes a lower mold actuator 62l, and an upper mold actuator 62u, which respectively move lower forming mold 52 and upper mold 58 up and down. However, it should be noted that it is possible to move only the lower forming mold 52 up and down without any movement of the upper mold.
    [032] The compression forming station 12 as illustrated in Figure 3 and described above has the wheel bed 34 provided with an upward curved shape in a direction transverse to the transport direction C along which the wheel bed receives the heated glass sheet corresponding to the shape initially provided by the roller forming station 16 shown in Figures 1 and 2. More specifically, the lower base frame 38 of the wheel bed 34 includes a plurality of rails 64 that extend along of the transport direction and have different elevations at which they support wheel assemblies 40. This high rail placement is provided by adjusters that are not shown to provide the curved shape of the wheel bed along a direction transverse to the direction of travel. transport.
    [033] Also shown in Figure 3, the upper compression mold 58 has its forming face 60 provided with an arrangement of holes 61 in which vacuum is provided with a vacuum source 66 shown in Figure 1 in order to support the foil. glass formed after compression formation and will guarantee the formation of the glass sheet in the shape of the forming face. Upon subsequent operation of the actuator 62, the lower compression ring 52 is moved downward and the upper compression mold 58 is moved upward and a shuttle 68 from the final processing station 18 is moved by an actuator 70 to move an delivery 72 in the left direction below the upper mold 58. The termination of the vacuum provided by the vacuum source 66 can then be accompanied by the supply of pressurized gas to the upper mold surface 60 to release the glass sheet in the delivery ring 72 and on the actuator hooks 70 then moves the hooks 68 back in the right direction from the position shown in Figure 1 so that the delivery ring 72 and the glass sheet formed therein are delivered for final processing such as further annealing or cooling rapid by abrupt cooling by air to reinforce heat or temper between the upper and lower temper heads 74 and 76.
    [034] With reference to Figures 4 and 5, another modality of the glass sheet forming system 10 'is similar to the modality of Figure 3, however it operates to provide positioning and formation of smooth glass sheets without any pre-formation as with the previously described modality. Thus, similar components of the same have the same reference numbers that are used for the training station 12 ', furnace 14', and the compression forming apparatus 36 'as well as the base structure 38'.
    [035] As shown in Figures 1 and 4, each modality of the system 10, 10 'includes a controller 78 connected to the mold actuator 62, the actuator shuttles 70, a conveyor drive 80 and the positioning device 54 to coordinate the operation of the system for the training and positioning cycle. Systems 10 and 10 'each have conventional sensor-like glass sheet forming systems adjacent to the junction between the outlet end of the roller forming station 16 and the upstream end of the forming station 12 or 12' to detect the location of a downstream end in the center of the side of the transported glass sheet.
    [036] As shown in Figures 6 and 7, the bottom forming mold facing upwards 52 can have the curvature both laterally in relation to the transport direction C and along the transport direction C and is mounted on the mold holder 50 by adjusters of any suitable type as schematically illustrated by 84 in order to provide adjustment to the upward concave shape designed to be formed. The pair of laterally spaced positioners 55 are mounted by a positioner drive 86 of the positioning apparatus 54 for movement along the transport direction within the open center of the lower forming mold 52 between the upstream position shown in Figure 6 and the position downstream shown in Figure 7. Controller 78 (Figures 1 and 4) operates carrier drive 80 and positioner drive 86 in a coordinated manner and provides rotational positioning of a transported glass sheet G to be aligned so appropriate by transport above mold 52 for forming. As the glass sheet is transported along the transport direction above the forming mold 52, the laterally spaced positioners 55 are moved along the transport direction from the upstream position of Figure 6 in the direction of the downstream position of Figure 7, but at a slower rate than the carrier so that the positioners come into contact with the sheet of glass.
    [037] As shown in Figure 10, the glass sheet G as shown by a solid line illustration is initially located counterclockwise from the rotational design position and contact with the slowly moving positioners 55 rotates the sheet. glass to the rotational design position illustrated by dotted lines in order to align vertically with the forming mold 52 by means of distant transport in preparation for compression forming. If the glass sheet is initially located clockwise from the rotational design position, the slowly moving positioners 55 rotate the glass sheet counterclockwise to the design rotation position. In addition, the positioners will not rotate the glass sheet if it is initially in the rotational design position and thus does not require any rotation. If there is any rotation in any direction, the controller moves the positioners 55 faster than the conveyor speed and the glass sheet transported so that the positioners come out of contact with the leading edge of the glass sheet in preparation for the glass sheet move on and in vertical alignment with the forming mold 52.
    [038] It should be mentioned that the amount of rotation to provide rotational alignment of the glass sheet G with the forming mold 52 does not have to be particularly optimal. More specifically, it has been observed that the ability to adjust for a main quantity of about 5 mm or a rear quantity of about 5 mm, for a total range of 10 mm, is sufficient to provide rotational adjustment to the design position to correct any rotational variation.
    [039] As shown in Figure 8, the positioning apparatus 54 includes cylinders 88 whose piston connecting rods 90 are vertically movable and provide support for the positioners 55 for movement between the upper position of Figure 8 where the positioners come into contact with the glass sheet and a lower position shown in Figure 9 to allow the glass sheet to move over the positioners and in vertical alignment above the forming mold 52. More specifically, the forming mold 52 as shown in Figures 6 and 7 has an open center 92 and a peripheral shape that corresponds to the periphery of the glass sheet. An upstream portion 94 of the forming mold 52 extends laterally in relation to the direction of transport, and the positioners 55 move in the direction of that portion upstream from the position of Figure 6 to the position of Figure 7 during the slower movement of the positioners than the carrier to provide the rotating glass sheet in rotational alignment with the mold periphery. Before the positioners 55 reach the downstream mold portion 94, the cylinders 88 move the positioners downwards so that the glass sheet can move over the positioners and the forming mold 52 and in vertical alignment with its peripheral shape.
    [040] Systems 10, 10 'each have an electrical presence sensor that is not shown in conventional glass sheet forming systems similar to the electromagnetic wave type in the center of the side of the transported glass sheet adjacent to the junction between the outlet end of the roller forming system 16 or furnace 14 'and the upstream end of the forming station 12 or 12'. This type of sensor detects the downstream end in the center of the side of the transported glass as it approaches or moves to the training station for training. Such sensors conventionally initiate operation of the associated training apparatus. Usually, there is about one meter, that is, 1,000 mm, of the detection path to the design position in the mold apparatus where the formation takes place. During this amount of travel, the midpoint of the side glass sheet where detection normally occurs can vary by about 3 mm and the side ends due to rotation during the entire transport can vary by about 5 mm from from the lateral midpoint, by a total variation in the range of about 8 mm.
    [041] With the present systems, the electrical presence sensor adjacent to the junction between the outlet end of the roller forming system 16 or furnace 14 'and the upstream end of the training station 12 or 12' is connected to the controller 78 to start the operation of the positioning device 54 in coordination with the carrier and after the positioners complete the positioning and come out of contact with the glass sheet, there is normally less than 100 mm of travel to the design position where the glass sheet is aligned to the forming mold 52 so that there is then normally only a total variation of the glass position from the design position in the range of about 1.2 mm. More specifically, after positioners 55 come out of contact with the glass sheet, the controller 78 operates the conveyor and the mold actuator 62 in a coordinated manner that provides a more accurate positioning of the glass sheet in relation to the forming mold 52 as it is more fully described hereinafter.
    [042] With reference to the timing graph shown in Figure 11, the X coordinate or abscissa represents the time during a positioning and timing cycle and the Y or ordered coordinate represents the speed of movement. More specifically, line C represents the conveyor speed along the horizontal transport direction, line P represents the positioner speed along the horizontal transport direction and line M represents the vertical movement speed of the forming mold 52 under the operation of the controller 78. The carrier speed C initially moves at a constant index speed during which the electric presence sensor at the time of line S through the operation of the controller 78 initiates the positioning device operation 54. Subsequently, the speed carrier C starts to decelerate at a constant rate and the positioners are accelerated to reach a maximum speed that is slightly less than the carrier speed and the positioners then start to decelerate at the same rate as the carrier. Slow moving positioners come into contact with the glass sheet and provide any necessary rotational adjustment and also provide any necessary longitudinal adjustment in relation to the carrier before reaching time on phantom line 96. If no rotational adjustment is required, both positioners they will come into contact with the glass sheet sooner than in the case when the positioners provide the rotational positioning of the glass as previously predicted. After the phantom line 96 time, the carrier speed continues to decelerate and the positioner speed increases until both the carrier and the positioners have the same speed at the moment of intersection 98. Positioners 55 then come out of contact with the sheet glass transported as the positioner speed continues to increase and the conveyor speed continues to decrease. After disengaging positioners 55 from the glass sheet, the positioners move downwards as previously described and their speed is decelerated to a stop at the locations shown in Figures 7 and 9. The conveyor speed and, therefore, the transport speed of the sheet then continue to decelerate and the bottom mold incorporated by the compression ring is moved upwards as shown by the mold line M, where the upward movement is initially relatively quick to lift the glass sheet from the conveyor to which the upward movement is decreased to a relatively slow movement during compression with the upper mold and is finally finished after the compression of the glass sheet is completed.
    [043] The glass sheet comes out of contact with the positioners at intersection 98 which is a predetermined distance along the transport direction of the location on the lifting line L where the bottom mold is moved upwards enough to lift the sheet glass of the carrier and finish its transport. This spacing together with a predetermined conveyor speed and the elevator speed facilitates the correct timing of the actuator 62 to lift the glass sheet as it is being transported in vertical alignment with the mold to provide proper positioning for the finishing lift the transport of the glass sheet.
    [044] Before timeline 96 shown in Figure 11, both the carrier and positioners 55 are decelerating at the same rate, but the speed of the positioners is slower than the speed of the carrier, about 100 mm per second as illustrated. The relevant part of the positioner's action begins when the glass sheet approaches the positioners and the positioners have reached their maximum speed, about 100 mm / second slower than the carrier, and have started to slow down with the carrier at the same rate. Preferably for a sheet of glass that has not been rotated and for which the electrical presence sensor has correctly identified the leading edge of the sheet of glass and has assigned the current position of the carrier to the sheet of glass or registered the sheet of glass to the carrier and by a sheet of glass that was not slid on the carrier after registration, the sheet of glass will have a separation of 10 mm away from the positioners at the beginning of the positioning as the positioners now begin to slow down. The positioners will have a 10 mm lead and the ideal glass sheet discussed shortly will reach and contact the positioners in slow motion after the positioners have traveled 10 mm less than the carrier. Typically the relevant positioning part occurs at a distance of approximately 200 mm from the conveyor. During this path of the carrier, the positioners travel in the same direction but travel 20 mm less than the travel distance of the carrier. Thus, if the positioners were in contact with the glass sheet at the beginning of its slowest movement, they would delay the movement of the glass sheet by 20 mm, but would only delay the ideal glass sheet by 10 mm as discussed above.
    [045] After rotational and longitudinal adjustment, the sheet of glass will be on timeline 96 in Figure 11 when the speed of the positioners accelerates as the speed of the carrier continues to decelerate. For an additional 1.5 mm of retarding movement of the glass sheet after timeline 96, the positioners are still going slower than the conveyor, so that the glass sheet is still pressed against the positioners. More specifically, at time point 96, the glass sheet is sliding on the conveyor rollers at 100 mm per second and is moving at the speed of the positioners. Between the time line 96 and the time point 98, the speed of the glass sheet increases to the speed of the carrier. The friction coefficient between the glass sheet and the carrier is initially, then, the dynamic friction coefficient instead of the static friction coefficient due to the sliding that occurs. Then the positioners need to be accelerated slowly between timeline 96 and point in time 98 so that they do not move away from the glass sheet until the glass sheet has stopped sliding on the conveyor and its transport speed is the same than carrier speed. At time point 98, the speed of the positioners and the speed of the carrier, and therefore also the speed of the glass sheet, are the same so that there is no slip and the carrier then controls the speed of transport of the glass sheet. . This is important due to the fact that the positioners delivered the glass sheet at the point in time 98 very precisely under the operation of the controller 78 in coordination with the carrier so that the transport of the glass sheet to the design position in with respect to forming mold 52 can be precisely controlled.
    [046] The carrier, not the positioner, thus controls the movement of the glass sheet for about the last 80 mm before being absorbed by the forming mold. This removes the inaccuracy of the positioning provided only by the sensor as previously described and inaccuracy due to the sliding between the glass sheet and the rollers over roughly the meter of travel of the sensor to the time point 98. The time point 98 is related very precisely to the design position of the mold by controller 78 and the coordinated conveyor operation for electrically controlled delivery of the glass sheet to the design position for absorption and forming.
    [047] After positioning and compression forming as described above, the forming mold 52 is moved downwards and the upper mold 58 is moved upwards with the glass sheet therein by the provision of the vacuum previously discussed so that the delivery ring 72 can be moved to the forming station to receive the glass sheet formed for final processing, or rough cooling or annealing as discussed above.
    [048] The cycle time of formation and total positioning is less than 2 seconds and specifically it is about 1 2/3 seconds.
    [049] Although exemplary modalities are described above, these modalities are not intended to describe all possible forms of the invention. Instead, the words used in the specification are words of description rather than limitation and it should be understood that several changes can be made without separating themselves from the spirit and scope of the invention. In addition, the features of various implantation modalities can be combined to form additional modalities of the invention.
    权利要求:
    Claims (11)
    [0001]
    1. METHOD FOR POSITIONING A HEATED GLASS SHEET (G), in relation to a forming mold (52), which comprises: transporting a sheet of heated glass (G) horizontally on a roller conveyor at a conveyor speed decelerating in a transport direction (C) along a route towards a vertically aligned position above a forming mold (52) having an open center (92) and a peripheral shape corresponding to the periphery of the glass sheet (G) also having a portion (94) downstream along the transport direction (C); and characterized by: moving a pair of positioners (55) along the transport direction (C) in laterally spaced locations while in a higher position within the open center (92) of the forming mold (52) from a upstream to downstream position while the glass sheet (G) is moved over the forming mold (52) in the glass sheet route (G) transported with the positioners (55) moving at a deceleration speed that it is slower than the decelerating conveyor speed so that the glass sheet (G) transported contacts the positioners (55) long enough to rotate the glass sheet (G) on the roller conveyor to correct any rotation of a rotational design position in relation to the forming mold (52); then continue to decelerate the speed of the carrier and accelerate the speed of the positioners (55) until the speed of the carrier and the speed of the positioners (55) is equal and then continue to increase the relative speed of the positioners (55) in relation to the speed of the conveyor so that the positioners (55) move faster than the speed of the conveyor and glass sheet (G) transported and the positioners come out of contact with the glass sheet (G) transported in preparation for the moving the glass sheet (G) on and in vertical alignment with the forming mold (52); and where after the speed of the carrier and the speed of the positioners (55) are equal, the speed of the carrier continues to decelerate and the speed of the positioners (55) continues to accelerate, but at a higher rate of acceleration according to the positioners (55 ) come out of contact with the glass sheet (G); and after the positioners (55) come out of contact with the glass sheet (G), the positioners (55) are moved down to their lower position adjacent to the portion (94) downstream of the forming mold (52), so that the glass sheet (G) can move over the positioners (55) in its downstream position and over the forming mold (52) in vertical alignment with its peripheral shape.
    [0002]
    2. METHOD FOR POSITIONING A HEATED GLASS SHEET, in relation to a forming mold, according to claim 1, characterized by the speed of the conveyor and the speed of the positioners (55) being decelerated at the same rate before continuing to decelerate the speed of the conveyor and accelerate the speed of the positioners (55).
    [0003]
    3. METHOD FOR POSITIONING A HEATED GLASS SHEET, in relation to a forming mold, according to claim 1, characterized in that the peripheral forming mold (52) is moved upwards in a time and speed to lift the sheet glass (G) moving from the carrier on rollers to form the glass sheet (G).
    [0004]
    4. METHOD FOR POSITIONING A HEATED GLASS SHEET FOR FORMATION, according to claim 3, characterized by the peripheral forming mold (52) being moved upwards in a time and speed to lift the glass sheet (G) from roller conveyor after the glass sheet (G) has been transported a predetermined distance along the transport direction (C) subsequent to the exit of the positioners (55) from contact with the glass sheet (G).
    [0005]
    5. METHOD FOR POSITIONING A HEATED GLASS SHEET, in relation to a forming mold, according to claim 1, characterized in that an upper mold (58) is moved downwards and the glass sheet (G) is formed by compaction between the forming mold (52) and the upper mold (58).
    [0006]
    6. METHOD FOR POSITIONING A HEATED GLASS SHEET, in relation to a forming mold, according to claim 1, characterized in that the heated glass sheet (G) is preformed before being transported in alignment with the mold training (52).
    [0007]
    7. METHOD FOR POSITIONING A HEATED GLASS SHEET, in relation to a forming mold, according to claim 1, characterized in that the heated glass sheet (G) is transported with a flat shape in alignment with the forming mold (52).
    [0008]
    8. APPLIANCE FOR THE POSITIONING OF A HEATED GLASS SHEET, which performs the method as defined in any one of claims 1 to 7, comprising: a roller carrier that includes rollers (40) that provide a curved upward concave shape for transporting a sheet of heated glass (G) horizontally at a decelerating carrier speed on a route along a transport direction (C) out of a heating furnace (16) and in the opposite direction to the furnace (16); . drive (80) of conveyor that drives the conveyor on rollers; an upward forming mold (52) which has a curved upward concave shape and an open center (92), and the forming mold also having a peripheral shape that corresponds to the periphery of the glass sheet (G) also having a downstream portion (94) along the transport direction (C); characterized by: a pair of positioners (55) laterally spaced at a location along the transport direction (C) in the transported glass sheet (G) route and located within the open center (92) of the forming mold (52) for movement between an upstream position and a downstream position adjacent to the portion (94) downstream of the forming mold (52) while the glass sheet (G ) is moved over the forming mold (52); . positioner drive (86) to move the pair of positioners (55) along the transport direction (C) and provide support (88) for the positioners (55) to allow them to move vertically between an upper position to enter contact with the glass sheet (G) and a lower position that allows the glass sheet (G) to move over the positioners (55); and a controller (78) configured to operate the carrier drive (80) and the positioner drive (86).
    [0009]
    9. APPARATUS FOR POSITIONING A HEATED GLASS SHEET FOR FORMATION, according to claim 8, characterized in that the controller (78) is configured to operate the conveyor drive (80) and the positioner drive (86) so that the speed of the carrier and the speed of the positioners (55) are decelerated by the same rate before the glass sheet (G) comes into contact with the positioners (55).
    [0010]
    10. APPARATUS FOR POSITIONING A HEATED GLASS SHEET FOR FORMATION, according to claim 8, characterized in that it also includes a mold actuator (62) to move the forming mold (52) upwards to lift the glass sheet moving carrier for training.
    [0011]
    11. APPARATUS FOR THE POSITIONING OF A HEATED GLASS SHEET FOR FORMATION, according to claim 10, characterized in that it additionally includes an upper mold (58) that cooperates with the forming mold (52) to compact the glass sheet .
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112014009318B1|2020-12-22|method and apparatus for positioning a sheet of heated glass for forming
    KR100257801B1|2000-06-01|Method and apparatus for bending glass sheets in a horizontal position
    EP0300416B1|1991-10-09|In-lehr press bending
    FI84592C|1991-12-27|FOERFARANDE SAMT ANORDNING FOER BOMBERING AV GLASSKIVOR.
    BRPI0606696B1|2016-10-25|device for bending one pane or several panes placed above one another, and method for bending at least one pane
    US5372624A|1994-12-13|Process and apparatus for bending a glass sheet
    US4666496A|1987-05-19|Shuttling support frame for vacuum pickup
    US4767434A|1988-08-30|Horizontal press bending pickup and delivery system
    JPH0662309B2|1994-08-17|Method and device for manufacturing curved glass
    FI89793C|1993-11-25|FREQUENCY REQUIREMENT FOR EXHAUST INSTALLATION AV EN GLASSKIVA SOM LOEPER PAO EN TRANSPORTOER
    FI91522B|1994-03-31|Method and apparatus for bending glass sheets
    FI89790C|1993-11-25|Method and apparatus for orienting a glass plate in relation to a bombing or other heat treatment device
    RU2729662C2|2020-08-11|Shuttle positioning system for sheet forming system
    RU2719872C2|2020-04-23|Glass sheets forming device and method
    CN108966633B|2020-04-10|SMT preparation system
    CN110922034B|2022-03-08|Hot bending equipment and processing technology for producing curved surface toughened film
    JP2013136472A|2013-07-11|Method of bending and molding glass plate and bend molding apparatus
    CN106240929A|2016-12-21|A kind of hybrid tubular material of ELECTROMAGNETIC VACUUM enters bagging apparatus at a high speed
    JPH0739636Y2|1995-09-13|Carton take-out molding equipment
    BR112020001797A2|2020-07-21|method and device for folding panels
    JP2014091671A|2014-05-19|Glass bending forming method and glass bending forming apparatus
    同族专利:
    公开号 | 公开日
    CA2852014A1|2013-04-25|
    US10011514B2|2018-07-03|
    ZA201403465B|2015-12-23|
    HUE050011T2|2020-11-30|
    US20150000346A1|2015-01-01|
    JP6026547B2|2016-11-16|
    CA2852014C|2019-07-23|
    BR112014009318A2|2017-04-11|
    MX2014004661A|2015-07-06|
    KR102034910B1|2019-11-08|
    RU2014116880A|2015-11-27|
    US20130091896A1|2013-04-18|
    CN103987669A|2014-08-13|
    EP2768780A4|2015-08-12|
    KR20140093950A|2014-07-29|
    PL2768780T3|2020-07-13|
    CN103987669B|2017-03-29|
    US8881551B2|2014-11-11|
    MX351016B|2017-09-28|
    MX360709B|2018-11-13|
    WO2013059000A3|2014-05-08|
    RU2613657C2|2017-03-21|
    JP2014534154A|2014-12-18|
    EP2768780A2|2014-08-27|
    EP2768780B1|2020-04-15|
    WO2013059000A2|2013-04-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    SU603636A1|1975-01-10|1978-04-25|Одесский Проектно-Конструкторский И Экспериментальный Филиал Всесоюзного Научно-Исследовательского И Проектно-Конструкторского Института Стекольного Машиностроения|Device for conveying sheet material|
    US4666493A|1985-12-19|1987-05-19|Ppg Industries, Inc.|Sheet positioning system|
    GB2193709B|1986-07-28|1989-12-13|Libbey Owens Ford Co|Apparatus for aligning glass sheets in a production line|
    US4895244A|1986-07-28|1990-01-23|Libbey-Owens-Ford Co.|Apparatus for aligning glass sheets in a production line|
    FR2644777B1|1989-03-24|1991-05-31|Saint Gobain Vitrage|POSITIONING OF A RUNNING GLASS SHEET ON A CONVEYOR|
    US4883526A|1989-03-30|1989-11-28|Libbey-Owens-Ford Co.|Method and apparatus for shaping and conveying glass sheets|
    JPH0421206Y2|1989-09-08|1992-05-14|
    US5066321A|1990-07-19|1991-11-19|Glasstech, Inc.|Device for positioning hot glass sheets|
    US5090989A|1990-10-17|1992-02-25|Glasstech, Inc.|Air operated locating system for orienting glass sheet on glass sheet shaping tool|
    US5096478A|1991-03-26|1992-03-17|Glasstech, Inc.|Apparatus and method for conveying glass sheets|
    JP3433462B2|1993-02-22|2003-08-04|旭硝子株式会社|Method and apparatus for positioning plate material in bending machine|
    GB9407609D0|1994-04-15|1994-06-08|Pilkington Glass Ltd|Bending and tempering glass sheets|
    US5669953A|1995-03-07|1997-09-23|Glasstech, Inc.|Glass sheet forming system|
    JP4688011B2|2001-05-09|2011-05-25|旭硝子株式会社|Glass plate bending apparatus and method|
    US6578383B2|2001-06-19|2003-06-17|Glasstech, Inc.|Apparatus and method for roll bending heated glass sheets|
    US20020189290A1|2001-06-19|2002-12-19|Glasstech, Inc.|System and method for forming and quenching glass sheets|
    US6543255B2|2001-06-19|2003-04-08|Glasstech, Inc.|Press bending station and method for job switching|
    US20030182969A1|2002-03-28|2003-10-02|Dunifon Thomas A.|Glass handling and locating system|
    JP2006058784A|2004-08-23|2006-03-02|Fuji Photo Film Co Ltd|Substrate positioning mechanism, substrate positioning method, substrate carrying apparatus and image forming apparatus|
    US7716949B2|2007-04-04|2010-05-18|Glasstech, Inc.|Method for positioning glass sheets for forming|
    US20110247367A1|2010-04-08|2011-10-13|Glasstech, Inc.|Press bending station and method for bending heated glass sheets|
    US8881551B2|2011-10-17|2014-11-11|Glasstech, Inc.|Method for positioning glass sheets for forming|US8881551B2|2011-10-17|2014-11-11|Glasstech, Inc.|Method for positioning glass sheets for forming|
    WO2015013475A1|2013-07-26|2015-01-29|Corning Incorporated|Corrugated sheet, method of manufacture thereof, and mold therefor|
    CN103708716B|2013-12-20|2016-02-24|广州福耀玻璃有限公司|The glass positioning device for glass of compacting tool set|
    US9933373B2|2014-04-29|2018-04-03|Glasstech, Inc.|Glass sheet acquisition and positioning mechanism for an inline system for measuring the optical characteristics of a glass sheet|
    CN104193154B|2014-08-15|2017-05-24|福耀集团（上海）汽车玻璃有限公司|Improved mold for out-of-furnace press forming of automobile laminated glass|
    US9896369B2|2014-11-24|2018-02-20|Glasstech, Inc.|Glass sheet forming and annealing providing edge stress control|
    US10851013B2|2015-03-05|2020-12-01|Glasstech, Inc.|Glass sheet acquisition and positioning system and associated method for an inline system for measuring the optical characteristics of a glass sheet|
    CN107646023B|2015-05-27|2020-12-01|皮尔金顿集团有限公司|Method and apparatus for shaping glass sheets|
    TWI729020B|2015-11-02|2021-06-01|美商玻璃技術股份有限公司|Glass sheet positioning apparatus and method and glass sheet processing system|
    EP3371118A4|2015-11-02|2019-07-03|Glasstech, Inc.|Mold shuttle positioning system for a glass sheet forming system|
    EP3370894A4|2015-11-02|2019-08-21|Glasstech, Inc.|Vacuum mold shuttle system for a glass sheet forming system|
    CN106007351B|2016-05-27|2018-09-11|昆山国显光电有限公司|The calibration method of glass loading attachment, fast heat treatment device and its supporting pin|
    KR20190082954A|2016-11-23|2019-07-10|필킹톤 그룹 리미티드|METHOD OF FORMING A GLASS SHEET AND BENDING TOOL USED THEREON|
    CN106932931B|2017-05-02|2019-09-27|武汉华星光电技术有限公司|A kind of device and method being directed at glass plate|
    CN109982981A|2017-10-27|2019-07-05|法国圣戈班玻璃厂|For fixing the device of sheet material|
    PL236771B1|2018-08-08|2021-02-22|Pilkington Automotive Poland Spolka Z Ograniczona Odpowiedzialnoscia|Glass bending press|
    法律状态:
    2018-03-27| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-06-02| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-10-06| B09A| Decision: intention to grant|
    2020-12-22| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 05/10/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/274,827|US8881551B2|2011-10-17|2011-10-17|Method for positioning glass sheets for forming|
    US13/274,827|2011-10-17|
    PCT/US2012/058844|WO2013059000A2|2011-10-17|2012-10-05|Method and apparatus for positioning glass sheets for forming|
    [返回顶部]