WO2022202234A1 - Manufacturing method for glass film and manufacturing device for same - Google Patents

Manufacturing method for glass film and manufacturing device for same Download PDF

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Publication number
WO2022202234A1
WO2022202234A1 PCT/JP2022/009545 JP2022009545W WO2022202234A1 WO 2022202234 A1 WO2022202234 A1 WO 2022202234A1 JP 2022009545 W JP2022009545 W JP 2022009545W WO 2022202234 A1 WO2022202234 A1 WO 2022202234A1
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WO
WIPO (PCT)
Prior art keywords
glass film
strip
cutting
pressing force
band
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Application number
PCT/JP2022/009545
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French (fr)
Japanese (ja)
Inventor
浩一 森
周三 岩田
修 古後
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日本電気硝子株式会社
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Application filed by 日本電気硝子株式会社 filed Critical 日本電気硝子株式会社
Publication of WO2022202234A1 publication Critical patent/WO2022202234A1/en

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/03—Glass cutting tables; Apparatus for transporting or handling sheet glass during the cutting or breaking operations

Definitions

  • the present invention relates to a glass film manufacturing technology, and more particularly, to a technology for obtaining a glass film of a predetermined length by cutting in the width direction a band-shaped glass film that is conveyed in the horizontal direction after molding.
  • a band glass film that is continuously formed by a downdraw method, a float method, or the like is cut in the width direction while being transported in the horizontal direction to obtain a predetermined length. Obtaining a glass film has been done.
  • Patent Document 1 after forming score lines (scribe lines) along the width direction on the lower surface of a thin sheet glass that is conveyed in the lateral direction after molding, a folding roller is applied to the area where the scribe lines are formed.
  • a device is disclosed for breaking and cutting sheet glass by lowering.
  • a scribe line is formed by moving the cutter wheel from one end to the other end in the width direction with respect to the lower surface of the thin plate glass conveyed in the lateral direction (the same See paragraph [0021] of the literature, etc.). According to such a method, the cutting process of the thin plate glass becomes troublesome and complicated, and the work efficiency deteriorates.
  • the thickness of the thin plate glass is, for example, 1.5 mm or less (see paragraph [0010] of the same document).
  • the thin sheets of glass within this thickness range there are those thin enough to be referred to as glass films that are too thin to form scribe lines. This problem is more pronounced when scribe lines are formed on the bottom surface of the glass film than when scribe lines are formed on the top surface of the glass film. Therefore, in the technique of cutting by pushing force by lowering the working member (folding roller) as disclosed in the same document, there is a problem that the cutting process cannot be performed appropriately as the thickness of the glass film becomes smaller.
  • the present invention makes it possible to easily and simply perform a cutting process by applying a pushing force from an upper action member to the strip-shaped glass film being conveyed in the lateral direction after molding, thereby improving work efficiency.
  • Another object of the present invention is to appropriately perform the above-described cutting process no matter how small the thickness of the strip glass film is.
  • a first aspect of the present invention which has been devised to solve the above problems, includes a forming step of forming a strip glass film, a horizontal conveying step of conveying the strip glass film in a horizontal direction by a horizontal conveying means,
  • a glass film manufacturing method comprising a cutting step of cutting the glass film of a predetermined length by cutting the strip glass film in the width direction during the conveying step, wherein in the cutting step, the lower surface of the strip glass film and a process of applying a pressing force to the strip glass film from an acting member arranged above the strip glass film, and the pressing force from the acting member is performed. is characterized by extending the flaw in the width direction of the strip glass and cutting the strip glass film.
  • the horizontal conveying step that is, during the horizontal conveying of the band-shaped glass film after molding
  • a simple process of forming a scratch that serves as a cutting starting point on a part of the lower surface of the formed band-shaped glass film can be performed.
  • the band-shaped glass film is cut by extending the damage in the width direction by the pressing force from the acting member. Therefore, the strip glass film can be easily and simply cut by applying a pushing force from the acting member above the strip glass film, thereby improving working efficiency.
  • the scratch that serves as the starting point for cutting is not a scribe line, the scratch can be appropriately formed on the lower surface of the strip-shaped glass film, no matter how thin it is. Therefore, regardless of the thickness of the band-shaped glass film, it is possible to perform appropriate cutting processing by the pressing force from the acting member.
  • the pressing force is applied to the scratch forming region, or the pressing force of the strip glass film is applied. You may make it form the said crack
  • the acting member is a roller having a central axis along the width direction of the band-shaped glass film, and the roller has a central axis at least when the pressing force is applied to the band-shaped glass film. You may make it rotate around.
  • the roller since the rotating roller applies a pressing force to the band-shaped glass film, problems such as scratches on the band-shaped glass film due to rubbing can be avoided.
  • the roller may be a free roller or a driving roller to which a rotational driving force is applied.
  • the driving roller it is preferable that the conveying speed and the peripheral speed of the band-shaped glass film are the same.
  • the band-shaped glass film has ears at both ends in the width direction, the thickness of which is thicker than that at the center thereof. , the pressing force may be applied to the strip glass film.
  • the horizontal transport means includes a first transport means and a second transport means arranged adjacent to the downstream side of the first transport means and at a position lower than the first transport means.
  • the step between the first conveying means and the second conveying means can be effectively used for the cutting process.
  • the scratches may be formed on the lower surface of the band-shaped glass film by utilizing the gap between the first conveying means and the second conveying means.
  • the gap between both conveying means can be effectively used as a gap for inserting a tool for forming scratches on the lower surface of the band-shaped glass film.
  • the scratch may be formed on the lower surface of the strip glass film between the downstream end of the first transport means and the upper part of the second transport means.
  • the strip glass film is inclined downward toward the downstream side from the downstream end of the first transport means to the upper part of the second transport means.
  • a sufficiently large space exists below the strip glass film in this tilted state.
  • This space is effectively used as a working space for forming scratches on the lower surface of the band-shaped glass film with a tool. Therefore, workability is improved when performing work for forming a scratch.
  • the pressing force may be applied to the strip glass film from the downstream end of the first transport means to the upper part of the second transport means.
  • the Lowering of the action member may be restricted.
  • the acting member can be lowered until a sufficient pressing force acts on the band-shaped glass film to develop the scratch. Moreover, even if the working member is lowered until the strip glass film is cut, the working member does not press the upper part of the second conveying means. As a result, problems such as damage to the second conveying means due to impact from the action member can be avoided.
  • the conveying speed of the second conveying means may be higher than that of the first conveying means.
  • the horizontal transport means further includes a third transport means arranged adjacent to the downstream side of the second transport means, and the third transport means is closer to the second transport means than the second transport means.
  • the conveying speed may be high.
  • the glass films that are cut in order are transferred from the second conveying means to the third conveying means and conveyed, and along with this, the distance between the cut side ends of the adjacent glass films increases. even longer. Therefore, not only is the contact between the cut-side ends of the adjacent glass films more reliably prevented, but also the adjacent glass films are prevented from interfering with the post-treatment of each glass film. can.
  • the acting member may be lowered to apply the pressing force to the strip glass film to cut the strip glass, and then the acting member may be raised.
  • the pressing force may be applied from the acting member to the strip glass film by lifting the strip glass film upward at a position downstream of the acting member.
  • a second aspect of the present invention which has been devised to solve the above-mentioned problems, comprises forming means for forming a band-shaped glass film, horizontal conveying means for conveying the band-shaped glass film in the horizontal direction, and conveyance by the horizontal conveying means. and a cutting means for cutting the strip glass film in the width direction to cut out a predetermined length of the glass film, wherein the cutting means is provided on a part of the lower surface of the strip glass film.
  • a process for forming a scratch that serves as a starting point for cutting and a process for applying a pressing force to the strip-shaped glass film from an acting member disposed above the strip-shaped glass film are performed, and the pressing from the acting member is performed. It is characterized in that the scratch is developed in the width direction of the strip glass by force to cut the strip glass film.
  • the cutting process can be easily and simply performed by applying a pressing force from an upper action member to the band-shaped glass film being transported in the horizontal direction after molding, thereby improving work efficiency. No matter how small the thickness of the band-shaped glass film is, the cutting process can be performed appropriately.
  • BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the whole structure of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic plan view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. It is a bottom view which shows the strip
  • a belt-shaped glass film manufacturing apparatus (hereinafter simply referred to as a manufacturing apparatus) and a glass film manufacturing method according to an embodiment of the present invention will be described below with reference to the drawings.
  • FIG. 1 is a schematic side view schematically showing the overall configuration of a manufacturing apparatus 1 according to the first embodiment of the invention.
  • the manufacturing apparatus 1 includes, as main components, a forming means 2 for forming the band-shaped glass film G, and a direction changing section 3 for changing the conveying direction of the band-shaped glass film G which continuously descends after forming. and a horizontal conveying means 4 for horizontally conveying the strip-shaped glass film G that has passed through the direction changing section 3 .
  • the manufacturing apparatus 1 includes a cutting means 5 for cutting the strip-shaped glass film G conveyed by the horizontal conveying means 4 in the width direction (a direction perpendicular to the conveying direction) for each predetermined length, and the cutting means 5 in order.
  • a pallet 6 is provided for storing glass films G1 of a predetermined length cut and transported by the horizontal transport means 4 in a layered manner in a flat position.
  • the glass film G1 and protective sheets such as foamed resin sheets or resin film sheets are alternately stacked on the pallet 6 .
  • the thickness of the strip glass film G is preferably 300 ⁇ m or less, 200 ⁇ m or less, or 100 ⁇ m or less.
  • the forming means 2 comprises a formed body 7 having an approximately wedge-shaped cross section with an overflow groove 7a at its upper end. Below the molded body 7, the molten glass strip is formed into a strip glass film G having a predetermined width, and then heat treatment is performed to slowly cool the strip glass film G. After that, the strip glass film G is exposed to an ambient temperature ambient atmosphere. Then, a cooling process is performed to cool to near room temperature.
  • the direction changing part 3 guides the direction change of the band-shaped glass film G after molding.
  • the direction changing section 3 includes a plurality of guide rollers 8 arranged in a curved shape. These guide rollers 8 are in contact with the back surface of the band-shaped glass film G. As shown in FIG.
  • the horizontal transport means 4 includes a plurality of transport means (first transport means 9, second transport means 10, third transport means 11) arranged along the horizontal direction (three in the example shown for convenience).
  • these transport means 9, 10 and 11 are all belt conveyors.
  • these belt conveyors are called a first conveyor 9, a second conveyor 10 and a third conveyor 11 in order from the upstream side.
  • the second conveyor 10 is arranged at a position lower than the first conveyor 9.
  • the second conveyor 10 and the third conveyor 11 are arranged at the same height position.
  • the upper portion (upper surface portion) 10a of the second conveyor 10 is positioned lower than the lower portion (lower surface portion) 9b of the first conveyor 9 .
  • the first conveyor 9 and the second conveyor 10 are vertically separated.
  • the upstream portion of the second conveyor 10 is positioned right below the downstream portion of the first conveyor 9 .
  • the first conveyor 9 and the second conveyor 10 overlap each other in the lateral direction.
  • the second conveyor 10 has a higher transfer speed than the first conveyor 9
  • the third conveyor 11 has a higher transfer speed than the second conveyor 10 .
  • the cutting means 5 includes a bladed member 12 for forming a scratch Gx (details will be described later) on a portion of the lower surface Gb of the strip glass film G, and a roller as an acting member for applying a pressing force to the strip glass film G. 13.
  • the bladed member 12 has a cutting edge 12a at its tip and is movable in the direction indicated by the arrow A from the retracted position shown.
  • the cutting edge 12a of the bladed member 12 is arranged on one end side of the strip glass film G in the width direction.
  • the widthwise length of the cutting edge 12a is set to a length corresponding to a part of the widthwise length of the band-shaped glass film G.
  • the bladed member 12 is moved along a straight line in the direction of arrow A by an air cylinder, ball screw mechanism, or the like (not shown) (see FIG. 2).
  • the configuration for moving the bladed member 12 is not limited to this, and may be, for example, a configuration as shown in FIG.
  • This structure consists of a rotating shaft 15 held by a holding table 14 downstream of the first conveyor 9 and to which a rotational driving force is applied so as to be able to rotate forward and backward, and a supporting member 16 rotating integrally with the rotating shaft 15. , and the bladed member 12 is connected to the tip portion 16 a of the support member 16 .
  • the holding table 14 is fixedly installed on a floor surface or the like. Note that the tip portion 16a of the support member 16 is bent toward the center in the width direction, and the bladed member 12 is fixed to this bent portion. In this way, the bladed member 12 moves along an arc as indicated by the arrow X from the retracted position indicated by the dashed line in FIG. to the retracted position. Alternatively, the bladed member 12 may be manually moved by an operator.
  • rollers 13 are spaced upward from the upper surface portion 10a of the second conveyor 10.
  • a pair of rollers 13 are provided at positions corresponding to both ends of the band-shaped glass film G in the width direction.
  • These rollers 13 are free rollers (rollers to which rotational driving force is not applied) rotatable around a central axis (center axis line) 17 . Further, these rollers 13 are held via a central shaft 17 by tip portions 19 a of a pair of arms 19 arranged outside of both ends in the width direction of the first conveyor 9 .
  • the pair of arms 19 rotate integrally with a rotating shaft 21 which is held by a base 20 at a position downstream of the first conveyor 9 and to which rotational driving force is applied so as to rotate forward and reverse.
  • the base 20 is fixedly installed on a floor surface or the like. Therefore, these rollers 13 can descend from the retracted position shown in FIG. 2 along an arc as indicated by arrow B, and then ascend along the arc to the retracted position. In this case, the descent and ascent of these rollers 13 are restricted at predetermined positions. This regulation is performed by stoppers (not shown) that stop the forward and reverse rotational movements of the pair of arms 19 at predetermined positions.
  • the movement path of these rollers 13 (the path indicated by arrow B) is positioned downstream of the movement path of the bladed member 12 (the path indicated by arrow A).
  • the roller 13 may be a single roller 13 that extends from a position corresponding to one widthwise end of the strip glass film G to a position corresponding to the other widthwise end.
  • the structure for lowering and raising the roller 13 may be one using, for example, an air cylinder or a ball screw mechanism. In this case, the roller 13 can be moved, for example, along a straight line in the vertical direction.
  • the glass plate manufacturing method includes a forming process, a horizontal conveying process, and a cutting process.
  • the forming step is a step of forming the band-shaped glass film G by the formed body 7, the heat treatment section, and the cooling section.
  • the horizontal conveying step is a step of horizontally conveying the band-shaped glass film G after molding and the cut glass film G1 of a predetermined length.
  • the cutting step is a step of cutting the band-shaped glass film G conveyed by the horizontal conveying means 4 in the width direction to cut out the glass film G1 of a predetermined length.
  • the strip glass film G extends from the downstream end 9x of the first conveyor 9 to the upper surface 10a of the second conveyor 10, that is, the cutting edge 12a is placed on the lower surface Gb of the strip glass film G in an inclined state. Strike. As a result, a scratch Gx is formed on the lower surface Gb.
  • the gap 22 between the first conveyor 9 and the second conveyor 10 is effectively used as a gap for inserting the bladed member 12 .
  • the bladed member 12 since the first conveyor 9 and the second conveyor 10 are separated vertically, when inserting the bladed member 12 at an angle as indicated by the arrow A, a sufficiently large gap is required. 22 can be secured, and workability is improved.
  • the bladed member 12 may be slid in the width direction of the strip glass film G by a predetermined length at the same time as the abutment.
  • the glass strip G slopes downward toward the downstream side.
  • the bladed member 12 moves in a direction (direction of arrow A) that inclines upward toward the downstream side. Therefore, the direction in which the bladed member 12 is moved intersects the band-shaped glass film G at an appropriate angle. That is, the crossing angle can be made closer to a right angle. Thereby, the scratches Gx can be appropriately formed on the lower surface Gb of the band-shaped glass film G. As shown in FIG.
  • a large space 23 is formed below the strip glass film G in the inclined state.
  • This large space 23 is effectively used as a working space for forming the above-mentioned scratches Gx with the bladed member 12 .
  • the tilt angle of the tilted strip glass film G with respect to the horizontal plane changes. In this case, it is also necessary to change the angle of inclination with respect to the horizontal plane when moving the bladed member 12 .
  • the work space 23 since the work space 23 is large, such a request can be accurately met, and workability is improved.
  • FIG. 6 is a bottom view showing a state in which scratches Gx are formed on the bottom surface Gb of the band-shaped glass film G.
  • the scratch Gx is formed at one end of the strip glass film G in the width direction.
  • Ear portions Gd having a thickness greater than that of the central region (effective region) Gc are formed at both ends of the band-shaped glass film G in the width direction.
  • the scratch Gx is formed across the effective area Gc from one ear Gd.
  • the flaw Gx extends along the width direction, and the length in the width direction is, for example, 5 to 30 mm, preferably with a lower limit of 10 mm and an upper limit of 20 mm.
  • the location where the scratch Gx is formed may be only the effective area Gc near the ear portion Gd or only the ear portion Gd.
  • the scratches Gx may be formed at both ends of the strip glass film G in the width direction.
  • the pair of rollers 13 presses only the tabs Gd at both ends in the width direction of the strip glass film G, and does not contact the effective area Gc.
  • problems such as contact scratches on the effective area Gc are avoided, and the effective area Gc is appropriately protected.
  • the effective area Gc is appropriately protected in the same manner even if the single roller described above is used instead of the pair of rollers 13 .
  • the above-mentioned "formation area of the scratch Gx” means the area including the scratch Gx of the band-shaped glass film G and covering the entire length in the width direction. This is because even if the above-mentioned sufficient pressing force acts only on the scratch Gx, the scratch Gx does not necessarily grow appropriately, and the above-mentioned sufficient pressing force acts on the region over the entire width direction where the scratch Gx should grow. This is because the flaw Gx is appropriately propagated.
  • the strip glass film G is cut in the width direction, and the glass film G1 of a predetermined length is cut off.
  • the roller 13 presses against the upper surface portion 10a of the second conveyor 10 its descent is restricted by the previously described stopper. Therefore, even if the roller 13 is lowered until the strip glass film is cut, the roller 13 does not press the upper surface portion 10 a of the second conveyor 10 . As a result, problems such as damage to the second conveyor 10 due to the impact from the roller 13 can be avoided.
  • the roller 13 rises toward the retracted position indicated by the dashed line. Therefore, the cut edge Ge of the strip glass film G is less likely to be caught by the roller 13, and the strip glass film G is smoothly transported. Also, at this point, the cut edge Ge of the strip glass film G and the cut edge Gf of the cut glass film G1 are properly received by the upper surface portion 10a of the second conveyor 10 . Therefore, problems such as sagging or bending deformation of both cut side ends Ge and Gf can be avoided. Furthermore, at this time point, since the second conveyor 10 has a higher transport speed than the first conveyor 9, both cutting side edges Ge and Gf are appropriately spaced apart.
  • the conveying force from the third conveyor 11 is mainly acting on the glass film G1 that has been cut in advance. Since the third conveyor 11 has a higher transport speed than the second conveyor 10, both the cut side ends Gh and Gi of the glass film G1 are further separated from each other. As a result, not only is the contact between the cut side ends Gh and Gi of the glass films G1 reliably prevented, but also the preceding glass film G1 is post-processed (for example, stored in the pallet 6). This avoids problems such as obstruction of the subsequent glass film G1.
  • FIG. 10 is a schematic side view of essential parts showing a state in which a cutting step according to the second embodiment of the present invention is being performed.
  • the cutting process according to the second embodiment is different from the cutting process according to the first embodiment described above in that the area where the pressing force of the roller 13 of the band-shaped glass film G is acting is provided with a blade. It is located where the cutting edge 12a of the member 12 abuts. In this case, when the pressing force is applied to the strip glass film G and when the cutting edge 12a is abutted, the cutting edge 12a may be applied at the same time, or after the pressing force is applied to the strip glass film G. may be pushed. Since the rest of the configuration is the same as that of the first embodiment already described, constituent elements common to both embodiments are denoted by the same reference numerals in FIG. 10, and descriptions thereof are omitted.
  • FIG. 11 is a schematic side view schematically showing the overall configuration of the manufacturing apparatus 1 according to the third embodiment of the invention.
  • the manufacturing apparatus 1 according to the third embodiment is different from the manufacturing apparatus 1 according to the first embodiment described above in that a ribbon glass is provided on the upstream side of the first conveyor 9.
  • a device 24 is provided for cutting and removing the edge portion Gd of the film G (more specifically, the unnecessary portion including the edge portion Gd). This device 24 cuts and separates the edges Gd of the strip glass film G with a laser cutting machine 26 while the strip glass film G that has passed through the direction changing section 3 is being transported in the horizontal direction by two upstream conveyors 25.
  • the selvage Gd after being cut and separated is conveyed by the inclined conveyor 27 and collected.
  • the laser cutting machine 26 irradiates the band-shaped glass film G thereunder with a laser 28 and jets a coolant 29 to cut and separate the ear portions Gd.
  • the strip-shaped glass film Gcc in the effective region from which the ear portions Gd have been removed is subjected to the same cutting process as in the first embodiment described above, thereby cutting the glass film G1c into a predetermined length. can be cut out. Since the rest of the configuration is the same as that of the first embodiment already described, constituent elements common to both embodiments are denoted by the same reference numerals in FIG. 11, and descriptions thereof are omitted.
  • FIG. 12 is a schematic side view of essential parts showing a state in which a cutting process according to a fourth embodiment of the present invention is being performed.
  • the cutting process according to the fourth embodiment differs from the cutting process according to the first embodiment described above in that the band-shaped glass film G is lifted upward at a position downstream of the roller 13.
  • the pressing force of the roller 13 is applied to the formation area of the scratch Gx of the band-shaped glass film G, and the band-shaped glass film G is cut.
  • the scratch Gx may be formed in the area where the strip glass film G is lifted and the pressing force of the roller 13 is applied.
  • the rollers 13 are preferably fixedly installed at the same height position as the upper surface portion 9a of the first conveyor 9 or at a slightly lower position. Moreover, it is preferable that the bladed member 12 moves right up to form a scratch Gx on the lower surface Gb of the band-shaped glass film G. As shown in FIG. Furthermore, it is preferable that the strip glass film G is lifted manually by an operator. In this case, it is preferable to lift the strip glass film G to a position higher than the rollers 13 . In addition, instead of the operator's manual work, the belt-shaped glass film G may be lifted using a mechanism or the like that moves upward while holding the strip-shaped glass film G with a gripping member or a suction pad.
  • the strip glass film G is formed by the overflow down-draw method, but it may be formed by other down-draw methods such as the slot down-draw method and the redraw method, or by the float method.
  • the acting member is a roller, but other member may be used as long as it can apply a pressing force to the band-shaped glass film.
  • the lower surface of the strip glass film is in contact with the upper surface of each conveyor in the horizontal conveying process, but a protective sheet such as a foamed resin sheet is interposed between the strip glass film and the upper surface of each conveyor. may be made.
  • the length of the protective sheet in the width direction is shortened so that the protective sheet can be collected at the end of transportation on the first conveyor 9, or the lower surface of the band-shaped glass film can be scratched. need to keep
  • first conveyor and the second conveyor overlap each other in the horizontal direction and are spaced apart in the vertical direction.
  • the first conveyor 9 and the second conveyor 10 may be horizontally spaced and vertically spaced apart, or as indicated by symbol Y2 in the figure, the first conveyor 9 and the second conveyor 10 may be horizontally spaced and vertically overlapped. You may do so.
  • the first transport means, the second transport means, and the third transport means constituting the horizontal transport means are belt conveyors, but other transport means such as roller conveyors may be used.

Abstract

The present invention comprises: a molding step in which a strip-shaped glass film G is molded; a horizontal conveyance step in which a horizontal conveyance means 4 is used to convey the strip-shaped glass film G in a horizontal direction; and a cutting step in which the strip-shaped glass film G is cut in a width direction while performing the horizontal conveyance step, and a glass film G1 of a prescribed length is cut away. During the cutting step, a process is performed to form, in a portion of a lower surface Gb of the strip-shaped glass film G, a score Gx that will serve as a cutting start point, and a process is performed to cause a pressing force to act on the strip-shaped glass film G from an action member 13 that is positioned above the strip-shaped glass film G. Due to the pressing force from the action member 13, the score Gx is made to develop in the width direction of the strip-shaped glass film G, and the strip-shaped glass film G is cut.

Description

ガラスフィルム製造方法及びその製造装置Glass film manufacturing method and its manufacturing apparatus
　本発明は、ガラスフィルムの製造技術に係り、詳しくは、成形後に横方向に搬送される帯状ガラスフィルムを幅方向に切断して所定長さのガラスフィルムを得るための技術に関する。 The present invention relates to a glass film manufacturing technology, and more particularly, to a technology for obtaining a glass film of a predetermined length by cutting in the width direction a band-shaped glass film that is conveyed in the horizontal direction after molding.
　ガラスフィルム製造の分野では、ダウンドロー法やフロート法などで連続して成形される帯状ガラスフィルムを横方向に搬送している途中で、該帯状ガラスフィルムを幅方向に切断して所定長さのガラスフィルムを得ることが行われている。 In the field of glass film production, a band glass film that is continuously formed by a downdraw method, a float method, or the like is cut in the width direction while being transported in the horizontal direction to obtain a predetermined length. Obtaining a glass film has been done.
　その具体例として、特許文献１には、成形後に横方向に搬送される薄板ガラスの下面に幅方向に沿う刻線（スクライブ線）を形成した後、そのスクライブ線の形成領域に折り割りローラを下降させることで、薄板ガラスを折り割り切断する装置が開示されている。 As a specific example, in Patent Document 1, after forming score lines (scribe lines) along the width direction on the lower surface of a thin sheet glass that is conveyed in the lateral direction after molding, a folding roller is applied to the area where the scribe lines are formed. A device is disclosed for breaking and cutting sheet glass by lowering.
特開平９－５２７２５号公報JP-A-9-52725
　ところで、特許文献１に開示の装置では、横方向に搬送される薄板ガラスの下面に対して、カッターホイールを幅方向一端から他端まで移動させることでスクライブ線を形成することが行われる（同文献の段落[００２１]等参照）。このような手法によれば、薄板ガラスの切断処理が面倒且つ煩雑となって作業能率が悪化する。 By the way, in the apparatus disclosed in Patent Document 1, a scribe line is formed by moving the cutter wheel from one end to the other end in the width direction with respect to the lower surface of the thin plate glass conveyed in the lateral direction (the same See paragraph [0021] of the literature, etc.). According to such a method, the cutting process of the thin plate glass becomes troublesome and complicated, and the work efficiency deteriorates.
　また、同文献には、薄板ガラスの厚みが例えば１．５ｍｍ以下であることが記載されている（同文献の段落[００１０]参照）。この厚みの範囲内にある薄板ガラスのうち、ガラスフィルムと称される程度まで薄いものの中には、厚みが小さ過ぎることによってスクライブ線を形成できないものが存在する。この問題は、ガラスフィルムの上面にスクライブ線を形成する場合よりも、下面にスクライブ線を形成する場合の方が顕著となる。そのため、同文献に開示のように作用部材（折割りローラ）を下降させることによる押し込み力によって切断を行う技術においては、ガラスフィルムの厚みが小さくなるに連れて切断処理を適切に行えなくなるという難点がある。 In addition, the same document describes that the thickness of the thin plate glass is, for example, 1.5 mm or less (see paragraph [0010] of the same document). Among the thin sheets of glass within this thickness range, there are those thin enough to be referred to as glass films that are too thin to form scribe lines. This problem is more pronounced when scribe lines are formed on the bottom surface of the glass film than when scribe lines are formed on the top surface of the glass film. Therefore, in the technique of cutting by pushing force by lowering the working member (folding roller) as disclosed in the same document, there is a problem that the cutting process cannot be performed appropriately as the thickness of the glass film becomes smaller. There is
　以上の観点から、本発明は、成形後に横方向に搬送中の帯状ガラスフィルムにその上方の作用部材から押し込み力を作用させることによる切断処理を容易且つ簡素に行えるようにして作業能率を向上させると共に、帯状ガラスフィルムの厚みが如何に小さくても上記切断処理を適切に行えるようにすることを課題とする。 From the above point of view, the present invention makes it possible to easily and simply perform a cutting process by applying a pushing force from an upper action member to the strip-shaped glass film being conveyed in the lateral direction after molding, thereby improving work efficiency. Another object of the present invention is to appropriately perform the above-described cutting process no matter how small the thickness of the strip glass film is.
　上記課題を解決するために創案された本発明の第一の側面は、帯状ガラスフィルムを成形する成形工程と、横搬送手段により前記帯状ガラスフィルムを横方向に搬送する横搬送工程と、前記横搬送工程の実行中に前記帯状ガラスフィルムを幅方向に切断して所定長さのガラスフィルムを切り取る切断工程とを備えたガラスフィルム製造方法であって、前記切断工程では、前記帯状ガラスフィルムの下面の一部に切断起点となる傷を形成する処理と、前記帯状ガラスフィルムの上方に配置された作用部材から前記帯状ガラスフィルムに押し付け力を作用させる処理とを行い、前記作用部材からの押し付け力により、前記傷を前記帯状ガラスの幅方向に進展させて、前記帯状ガラスフィルムを切断することに特徴づけられる。 A first aspect of the present invention, which has been devised to solve the above problems, includes a forming step of forming a strip glass film, a horizontal conveying step of conveying the strip glass film in a horizontal direction by a horizontal conveying means, A glass film manufacturing method comprising a cutting step of cutting the glass film of a predetermined length by cutting the strip glass film in the width direction during the conveying step, wherein in the cutting step, the lower surface of the strip glass film and a process of applying a pressing force to the strip glass film from an acting member arranged above the strip glass film, and the pressing force from the acting member is performed. is characterized by extending the flaw in the width direction of the strip glass and cutting the strip glass film.
　このような構成によれば、横搬送工程の実行中、すなわち成形後の帯状ガラスフィルムの横方向への搬送中に、その下面の一部に切断起点となる傷を形成するという簡単な処理が行われる。そして、この傷を作用部材からの押し付け力によって幅方向に進展させることで、帯状ガラスフィルムが切断される。したがって、帯状ガラスフィルムにその上方の作用部材から押し込み力を作用させることによる切断処理を容易且つ簡素に行えるようになって作業能率が向上する。しかも、切断起点となる傷はスクライブ線ではないため、如何に厚みが小さい帯状ガラスフィルムであっても、その下面に適切に傷を形成することができる。したがって、帯状ガラスフィルムの厚みに関わらず、作用部材からの押し込み力により適切な切断処理を行うことが可能となる。 According to such a configuration, during the horizontal conveying step, that is, during the horizontal conveying of the band-shaped glass film after molding, a simple process of forming a scratch that serves as a cutting starting point on a part of the lower surface of the formed band-shaped glass film can be performed. done. Then, the band-shaped glass film is cut by extending the damage in the width direction by the pressing force from the acting member. Therefore, the strip glass film can be easily and simply cut by applying a pushing force from the acting member above the strip glass film, thereby improving working efficiency. Moreover, since the scratch that serves as the starting point for cutting is not a scribe line, the scratch can be appropriately formed on the lower surface of the strip-shaped glass film, no matter how thin it is. Therefore, regardless of the thickness of the band-shaped glass film, it is possible to perform appropriate cutting processing by the pressing force from the acting member.
　この構成において、前記切断工程では、前記帯状ガラスフィルムに前記傷を形成した後、前記傷の形成領域に前記押し付け力を作用させるか、または、前記帯状ガラスフィルムの前記押し付け力を作用させている領域に、前記傷を形成するようにしてもよい。 In this configuration, in the cutting step, after the scratch is formed on the strip glass film, the pressing force is applied to the scratch forming region, or the pressing force of the strip glass film is applied. You may make it form the said crack|wound in the area|region.
　以上の構成において、前記作用部材は、前記帯状ガラスフィルムの幅方向に沿う中心軸線を有するローラであって、前記ローラは、少なくとも前記帯状ガラスフィルムに前記押し付け力を作用させる時に、前記中心軸線の廻りに回転するようにしてもよい。 In the above configuration, the acting member is a roller having a central axis along the width direction of the band-shaped glass film, and the roller has a central axis at least when the pressing force is applied to the band-shaped glass film. You may make it rotate around.
　このようにすれば、回転するローラによって帯状ガラスフィルムに押し付け力が作用するため、帯状ガラスフィルムに擦れによる傷が付く等の不具合が回避される。この場合、ローラは、フリーローラであってもよく、回転駆動力が付与される駆動ローラであってもよい。駆動ローラの場合は、帯状ガラスフィルムの搬送速度と周速度が同一であることが好ましい。 In this way, since the rotating roller applies a pressing force to the band-shaped glass film, problems such as scratches on the band-shaped glass film due to rubbing can be avoided. In this case, the roller may be a free roller or a driving roller to which a rotational driving force is applied. In the case of the driving roller, it is preferable that the conveying speed and the peripheral speed of the band-shaped glass film are the same.
　以上の構成において、前記帯状ガラスフィルムは、幅方向両端部にその中央側よりも厚みが大きい耳部をそれぞれ有し、それら耳部の一方のみまたは双方のみと、前記作用部材との押し付け動作によって、前記帯状ガラスフィルムに前記押し付け力を作用させてもよい。 In the above configuration, the band-shaped glass film has ears at both ends in the width direction, the thickness of which is thicker than that at the center thereof. , the pressing force may be applied to the strip glass film.
　このようにすれば、帯状ガラスフィルムに押し付け力をさせる際には、不要部である耳部（一方の耳部または双方の耳部）のみと、作用部材との押し付け動作が行われるため、作用部材は、双方の耳部の間にある中央側の有効領域には接触しない。そのため、帯状ガラスフィルムの有効領域には傷等が付かず、有効領域の適切な保護がなされる。 In this way, when applying a pressing force to the band-shaped glass film, only the ear portion (one ear portion or both ear portions), which is an unnecessary portion, is pressed against the acting member. The member does not contact the central effective area between the ears. Therefore, the effective area of the band-shaped glass film is not scratched, and the effective area is appropriately protected.
　以上の構成において、前記横搬送手段として、第一搬送手段と、前記第一搬送手段の下流側に隣り合って配置され且つ前記第一搬送手段よりも低い位置に配置された第二搬送手段とを有するようにしてもよい。 In the above configuration, the horizontal transport means includes a first transport means and a second transport means arranged adjacent to the downstream side of the first transport means and at a position lower than the first transport means. may have
　このようにすれば、第一搬送手段と第二搬送手段との段差を、切断工程の実行に有効利用することができる。 By doing so, the step between the first conveying means and the second conveying means can be effectively used for the cutting process.
　この構成において、前記第一搬送手段と前記第二搬送手段との間の隙間を利用して、前記帯状ガラスフィルムの下面に前記傷を形成してもよい。 In this configuration, the scratches may be formed on the lower surface of the band-shaped glass film by utilizing the gap between the first conveying means and the second conveying means.
　このようにすれば、両搬送手段間の隙間が、帯状ガラスフィルムの下面に傷を形成するための工具の挿入用隙間として有効利用される。 By doing so, the gap between both conveying means can be effectively used as a gap for inserting a tool for forming scratches on the lower surface of the band-shaped glass film.
　この構成において、前記帯状ガラスフィルムが前記第一搬送手段の下流側端部から前記第二搬送手段の上部に至るまでの間に、前記帯状ガラスフィルムの下面に前記傷を形成してもよい。 In this configuration, the scratch may be formed on the lower surface of the strip glass film between the downstream end of the first transport means and the upper part of the second transport means.
　このようにすれば、帯状ガラスフィルムが第一搬送手段の下流側端部から第二搬送手段の上部に至るまでの間は、帯状ガラスフィルムは下流側に向かって下降傾斜した状態にある。この傾斜状態にある帯状ガラスフィルムの下方には、十分な大きさの空間が存在している。この空間は、工具により帯状ガラスフィルムの下面に傷を形成するための作業用空間として有効利用される。そのため、傷を形成する作業を行う際の作業性が良くなる。 With this configuration, the strip glass film is inclined downward toward the downstream side from the downstream end of the first transport means to the upper part of the second transport means. A sufficiently large space exists below the strip glass film in this tilted state. This space is effectively used as a working space for forming scratches on the lower surface of the band-shaped glass film with a tool. Therefore, workability is improved when performing work for forming a scratch.
　これらの構成において、前記帯状ガラスフィルムが前記第一搬送手段の下流側端部から前記第二搬送手段の上部に至るまでの間に、前記帯状ガラスフィルムに前記押し付け力を作用させてもよい。 In these configurations, the pressing force may be applied to the strip glass film from the downstream end of the first transport means to the upper part of the second transport means.
　このようにした場合も、上記と同様に、傾斜状態にある帯状ガラスフィルムの下方には、十分な大きさの空間が存在している。この空間は、帯状ガラスフィルムに押し付け力を作用させるための空間として有効利用される。そのため、押し付け力を作用させる作業を行う際の作業性が良くなる。 Even in this case, there is a sufficiently large space below the tapered glass film in the inclined state, as in the above case. This space is effectively used as a space for exerting a pressing force on the strip glass film. Therefore, the workability is improved when performing the work to apply the pressing force.
　この構成において、前記作用部材を下降させて前記帯状ガラスフィルムに前記押し付け力を作用させることで前記帯状ガラスフィルムを切断する際に、前記作用部材が前記第二搬送手段の上部を押し付ける以前に前記作用部材の下降を規制してもよい。 In this configuration, when the acting member is lowered to apply the pressing force to the strip glass film to cut the strip glass film, before the acting member presses the upper part of the second conveying means, the Lowering of the action member may be restricted.
　このようにすれば、上記空間の存在により、傷を進展させるために十分な大きさの押し付け力が帯状ガラスフィルムに作用するまで作用部材を下降させることができる。しかも、作用部材を帯状ガラスフィルムが切断するまで下降させても、作用部材が第二搬送手段の上部を押し付けることはない。これにより、第二搬送手段が作用部材からの衝撃を受けて損傷する等の不具合が回避される。 In this way, due to the presence of the space, the acting member can be lowered until a sufficient pressing force acts on the band-shaped glass film to develop the scratch. Moreover, even if the working member is lowered until the strip glass film is cut, the working member does not press the upper part of the second conveying means. As a result, problems such as damage to the second conveying means due to impact from the action member can be avoided.
　これらの構成において、前記第一搬送手段よりも前記第二搬送手段の方が、搬送速度が高くてもよい。 In these configurations, the conveying speed of the second conveying means may be higher than that of the first conveying means.
　このようにすれば、切断後に帯状ガラスフィルム及び切り取られたガラスフィルムの両切断側端部が第二搬送手段の上部で受け止められた場合に、この両切断側端部が適切に離間した状態で搬送される。これにより、この両切断側端部同士が接触することによる両者の割れや破損等の発生が抑止される。 In this way, when both the cut side ends of the strip glass film and the cut glass film are received on the upper part of the second conveying means after cutting, the cut side ends are properly spaced apart from each other. be transported. As a result, it is possible to suppress the occurrence of cracks, breakage, etc., between the two cut ends due to contact between the two ends.
　これらの構成において、前記横搬送手段として、前記第二搬送手段の下流側に隣り合って配置された第三搬送手段をさらに有し、前記第二搬送手段よりも前記第三搬送手段の方が、搬送速度が高くてもよい。 In these configurations, the horizontal transport means further includes a third transport means arranged adjacent to the downstream side of the second transport means, and the third transport means is closer to the second transport means than the second transport means. , the conveying speed may be high.
　このようにすれば、順々に切り取られるガラスフィルムは第二搬送手段から第三搬送手段に移乗しつつ搬送され、これに伴って、隣り合うガラスフィルムの両切断側端部の離間長さがさらに長くなる。そのため、隣り合うガラスフィルムの両切断側端部同士の接触がより確実に阻止されるだけでなく、各ガラスフィルムに対して後処理を行う際に、隣り合うガラスフィルムが邪魔になることを阻止できる。 In this way, the glass films that are cut in order are transferred from the second conveying means to the third conveying means and conveyed, and along with this, the distance between the cut side ends of the adjacent glass films increases. even longer. Therefore, not only is the contact between the cut-side ends of the adjacent glass films more reliably prevented, but also the adjacent glass films are prevented from interfering with the post-treatment of each glass film. can.
　以上の構成において、前記作用部材を下降させることで前記帯状ガラスフィルムに前記押し付け力を作用させて前記帯状ガラスを切断した後、前記作用部材を上昇させてもよい。 In the above configuration, the acting member may be lowered to apply the pressing force to the strip glass film to cut the strip glass, and then the acting member may be raised.
　このようにすれば、帯状ガラスフィルムを切断した後に、その切断側端部が作用部材に引っ掛かる等の事態が生じ難くなり、帯状ガラスフィルムの搬送が円滑に行われる。 In this way, after the strip glass film is cut, it becomes difficult for the cutting side end to get caught on the working member, and the strip glass film can be conveyed smoothly.
　前述の構成において、前記作用部材よりも下流側の位置で、前記帯状ガラスフィルムを上方に持ち上げることで、前記作用部材から前記帯状ガラスフィルムに前記押し付け力を作用させてもよい。 In the above configuration, the pressing force may be applied from the acting member to the strip glass film by lifting the strip glass film upward at a position downstream of the acting member.
　このようにすれば、作用部材を下方に移動させる必要がなくなり、作用部材からの押し付け力が第二搬送手段の上部に作用する等の不具合が確実に回避される。 This eliminates the need to move the working member downward, and reliably avoids problems such as the pressing force from the working member acting on the upper portion of the second conveying means.
　上記課題を解決するために創案された本発明の第二の側面は、帯状ガラスフィルムを成形する成形手段と、前記帯状ガラスフィルムを横方向に搬送する横搬送手段と、前記横搬送手段により搬送中の前記帯状ガラスフィルムを幅方向に切断して所定長さのガラスフィルムを切り取る切断手段とを備えたガラスフィルム製造装置であって、前記切断手段は、前記帯状ガラスフィルムの下面の一部に切断起点となる傷を形成する処理と、前記帯状ガラスフィルムの上方に配置された作用部材から前記帯状ガラスフィルムに押し付け力を作用させる処理とを行う構成とされ、且つ、前記作用部材からの押し付け力により、前記傷を前記帯状ガラスの幅方向に進展させて、前記帯状ガラスフィルムを切断する構成とされることに特徴づけられる。 A second aspect of the present invention, which has been devised to solve the above-mentioned problems, comprises forming means for forming a band-shaped glass film, horizontal conveying means for conveying the band-shaped glass film in the horizontal direction, and conveyance by the horizontal conveying means. and a cutting means for cutting the strip glass film in the width direction to cut out a predetermined length of the glass film, wherein the cutting means is provided on a part of the lower surface of the strip glass film. A process for forming a scratch that serves as a starting point for cutting and a process for applying a pressing force to the strip-shaped glass film from an acting member disposed above the strip-shaped glass film are performed, and the pressing from the acting member is performed. It is characterized in that the scratch is developed in the width direction of the strip glass by force to cut the strip glass film.
　これによれば、この製造装置と実質的に構成が同一である既述の製造方法と同一の作用効果を得ることができる。 According to this, it is possible to obtain the same effect as the manufacturing method described above, which has substantially the same configuration as this manufacturing apparatus.
　本発明によれば、成形後に横方向に搬送中の帯状ガラスフィルムにその上方の作用部材から押し込み力を作用させることによる切断処理が容易且つ簡素に行えるようになって作業能率が向上すると共に、帯状ガラスフィルムの厚みが如何に小さくても上記切断処理を適切に行うことができる。 According to the present invention, the cutting process can be easily and simply performed by applying a pressing force from an upper action member to the band-shaped glass film being transported in the horizontal direction after molding, thereby improving work efficiency. No matter how small the thickness of the band-shaped glass film is, the cutting process can be performed appropriately.
本発明の第一実施形態に係るガラス板製造装置の全体構成を示す概略側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the whole structure of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るガラス板製造装置の要部を示す概略側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るガラス板製造装置の要部を示す概略平面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic plan view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るガラス板製造装置の構成要素である刃付き部材の動作を示す概略側面図である。It is a schematic side view which shows operation|movement of the bladed member which is a component of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るガラス板製造装置の要部を示す概略側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るガラス板製造装置を使用して得られた帯状ガラスフィルムを示す下面図である。It is a bottom view which shows the strip|belt-shaped glass film obtained using the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るガラス板製造装置の要部を示す概略側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るガラス板製造装置の要部を示す概略正面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic front view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るガラス板製造装置の要部を示す概略側面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the principal part of the glass plate manufacturing apparatus which concerns on 1st embodiment of this invention. 本発明の第二実施形態に係るガラス板製造装置の要部を示す概略側面図である。It is a schematic side view which shows the principal part of the glass plate manufacturing apparatus which concerns on 2nd embodiment of this invention. 本発明の第三実施形態に係るガラス板製造装置の全体構成を示す概略側面図である。It is a schematic side view which shows the whole structure of the glass plate manufacturing apparatus which concerns on 3rd embodiment of this invention. 本発明の第二実施形態に係るガラス板製造装置の要部を示す概略側面図である。It is a schematic side view which shows the principal part of the glass plate manufacturing apparatus which concerns on 2nd embodiment of this invention. 本発明の実施形態の変形例の要部を示す概略側面図である。It is a schematic side view which shows the principal part of the modification of embodiment of this invention.
　以下、本発明の実施形態に係る帯状ガラスフィルム製造装置（以下、単に製造装置という）及びガラスフィルム製造方法について図面を参照しつつ説明する。 A belt-shaped glass film manufacturing apparatus (hereinafter simply referred to as a manufacturing apparatus) and a glass film manufacturing method according to an embodiment of the present invention will be described below with reference to the drawings.
 ＜第一実施形態＞
　図１は、本発明の第一実施形態に係る製造装置１の全体構成を模式的に示す概略側面図である。同図に示すように、製造装置１は、主たる構成要素として、帯状ガラスフィルムＧを成形する成形手段２と、成形後に連続して下降する帯状ガラスフィルムＧの搬送方向を変換する方向変換部３と、方向変換部３を経た帯状ガラスフィルムＧを横方向に搬送する横搬送手段４とを備える。さらに、製造装置１は、横搬送手段４により搬送される帯状ガラスフィルムＧを所定長さ毎に幅方向（搬送方向と直交する方向）に切断する切断手段５と、切断手段５により順々に切り取られて横搬送手段４により搬送される所定長さのガラスフィルムＧ１を平置き姿勢で積層状に収納するパレット６とを備える。この場合、パレット６上では、ガラスフィルムＧ１と発泡樹脂シートや樹脂フィルムシート等の保護シート（図示略）とが交互に積み重ねられる構成にすることが好ましい。ここで、帯状ガラスフィルムＧの厚み（有効領域の厚み）は、３００μｍ以下もしくは２００μｍ以下または１００μｍ以下であることが好ましい。 <First embodiment>
FIG. 1 is a schematic side view schematically showing the overall configuration of a manufacturing apparatus 1 according to the first embodiment of the invention. As shown in the figure, the manufacturing apparatus 1 includes, as main components, a forming means 2 for forming the band-shaped glass film G, and a direction changing section 3 for changing the conveying direction of the band-shaped glass film G which continuously descends after forming. and a horizontal conveying means 4 for horizontally conveying the strip-shaped glass film G that has passed through the direction changing section 3 . Further, the manufacturing apparatus 1 includes a cutting means 5 for cutting the strip-shaped glass film G conveyed by the horizontal conveying means 4 in the width direction (a direction perpendicular to the conveying direction) for each predetermined length, and the cutting means 5 in order. A pallet 6 is provided for storing glass films G1 of a predetermined length cut and transported by the horizontal transport means 4 in a layered manner in a flat position. In this case, it is preferable that the glass film G1 and protective sheets (not shown) such as foamed resin sheets or resin film sheets are alternately stacked on the pallet 6 . Here, the thickness of the strip glass film G (thickness of the effective area) is preferably 300 μm or less, 200 μm or less, or 100 μm or less.
　成形手段２は、上端部にオーバーフロー溝７ａを有する断面が略楔形の成形体７を備える。成形体７の下方では、帯状の溶融ガラスを所定幅の帯状ガラスフィルムＧにした後、帯状ガラスフィルムＧを徐冷する熱処理を行い、然る後、帯状ガラスフィルムＧを常温の外部雰囲気に開放して室温付近まで冷却する冷却処理を行う。 The forming means 2 comprises a formed body 7 having an approximately wedge-shaped cross section with an overflow groove 7a at its upper end. Below the molded body 7, the molten glass strip is formed into a strip glass film G having a predetermined width, and then heat treatment is performed to slowly cool the strip glass film G. After that, the strip glass film G is exposed to an ambient temperature ambient atmosphere. Then, a cooling process is performed to cool to near room temperature.
　方向変換部３は、成形後の帯状ガラスフィルムＧの方向変換を案内するものである。本実施形態では、方向変換部３は、湾曲状に配列された複数のガイドローラ８を備える。これらのガイドローラ８は、帯状ガラスフィルムＧの裏面に接触している。 The direction changing part 3 guides the direction change of the band-shaped glass film G after molding. In this embodiment, the direction changing section 3 includes a plurality of guide rollers 8 arranged in a curved shape. These guide rollers 8 are in contact with the back surface of the band-shaped glass film G. As shown in FIG.
　横搬送手段４は、横方向に沿うように配列された複数台（図例では便宜上３台）の搬送手段（第一搬送手段９、第二搬送手段１０、第三搬送手段１１）を備える。本実施形態では、これら搬送手段９、１０、１１は、何れも、ベルトコンベアである。以下、これらベルトコンベアを、上流側から順に、第一コンベア９、第二コンベア１０及び第三コンベア１１と称する。 The horizontal transport means 4 includes a plurality of transport means (first transport means 9, second transport means 10, third transport means 11) arranged along the horizontal direction (three in the example shown for convenience). In this embodiment, these transport means 9, 10 and 11 are all belt conveyors. Hereinafter, these belt conveyors are called a first conveyor 9, a second conveyor 10 and a third conveyor 11 in order from the upstream side.
　第二コンベア１０は、第一コンベア９よりも低い位置に配置されている。第二コンベア１０と第三コンベア１１とは、同じ高さ位置に配置されている。本実施形態では、第一コンベア９の下部（下面部）９ｂよりも第二コンベア１０の上部（上面部）１０ａの方が低い位置にある。換言すれば、第一コンベア９と第二コンベア１０とは、上下方向で離間している。また、第一コンベア９の下流側部位の真下には、第二コンベア１０の上流側部位が位置している。換言すれば、第一コンベア９と第二コンベア１０とは、横方向で重なり合っている。さらに、第二コンベア１０は、第一コンベア９よりも搬送速度が高く、第三コンベア１１は、第二コンベア１０よりも搬送速度が高い。 The second conveyor 10 is arranged at a position lower than the first conveyor 9. The second conveyor 10 and the third conveyor 11 are arranged at the same height position. In the present embodiment, the upper portion (upper surface portion) 10a of the second conveyor 10 is positioned lower than the lower portion (lower surface portion) 9b of the first conveyor 9 . In other words, the first conveyor 9 and the second conveyor 10 are vertically separated. Further, the upstream portion of the second conveyor 10 is positioned right below the downstream portion of the first conveyor 9 . In other words, the first conveyor 9 and the second conveyor 10 overlap each other in the lateral direction. Furthermore, the second conveyor 10 has a higher transfer speed than the first conveyor 9 , and the third conveyor 11 has a higher transfer speed than the second conveyor 10 .
　切断手段５は、帯状ガラスフィルムＧの下面Ｇｂの一部に傷Ｇｘ（詳細は後述する）を形成するための刃付き部材１２と、帯状ガラスフィルムＧに押し付け力を作用させる作用部材としてのローラ１３とを備える。 The cutting means 5 includes a bladed member 12 for forming a scratch Gx (details will be described later) on a portion of the lower surface Gb of the strip glass film G, and a roller as an acting member for applying a pressing force to the strip glass film G. 13.
　詳述すると、図２に示すように、刃付き部材１２は、先端に切れ刃１２aを有し、図示の退避位置から矢印Ａで示す方向に移動可能とされている。図３に示すように、刃付き部材１２の切れ刃１２ａは、帯状ガラスフィルムＧの幅方向一端側に配置されている。切れ刃１２ａの幅方向長さは、帯状ガラスフィルムＧの幅方向長さの一部に対応する長さとされている。本実施形態では、刃付き部材１２は、図外のエアシリンダやボールねじ機構等により矢印Ａ方向に一直線に沿って移動する（図２参照）。刃付き部材１２を移動させる構成は、これに限らず、例えば図４に示すような構成であってもよい。この構成は、第一コンベア９の下流側位置で保持台１４に保持され且つ正逆回転可能に回転駆動力を付与される回転軸１５と、この回転軸１５と一体的に回転する支持部材１６とを設け、この支持部材１６の先端部１６ａに刃付き部材１２を連結したものである。保持台１４は、床面等の上に固定設置されている。なお、この支持部材１６の先端部１６ａは、幅方向中央側に折れ曲がっており、この折れ曲がり部に刃付き部材１２が固定されている。このようにすれば、刃付き部材１２は、同図に鎖線で示す退避位置から矢印Ｘで示すように円弧に沿って移動して帯状ガラスフィルムＧの下面Ｇｂに到達し、その後に円弧に沿って退避位置に戻ることができる。また、これら以外に、刃付き部材１２を作業者による手作業で移動させてもよい。 Specifically, as shown in FIG. 2, the bladed member 12 has a cutting edge 12a at its tip and is movable in the direction indicated by the arrow A from the retracted position shown. As shown in FIG. 3, the cutting edge 12a of the bladed member 12 is arranged on one end side of the strip glass film G in the width direction. The widthwise length of the cutting edge 12a is set to a length corresponding to a part of the widthwise length of the band-shaped glass film G. As shown in FIG. In this embodiment, the bladed member 12 is moved along a straight line in the direction of arrow A by an air cylinder, ball screw mechanism, or the like (not shown) (see FIG. 2). The configuration for moving the bladed member 12 is not limited to this, and may be, for example, a configuration as shown in FIG. This structure consists of a rotating shaft 15 held by a holding table 14 downstream of the first conveyor 9 and to which a rotational driving force is applied so as to be able to rotate forward and backward, and a supporting member 16 rotating integrally with the rotating shaft 15. , and the bladed member 12 is connected to the tip portion 16 a of the support member 16 . The holding table 14 is fixedly installed on a floor surface or the like. Note that the tip portion 16a of the support member 16 is bent toward the center in the width direction, and the bladed member 12 is fixed to this bent portion. In this way, the bladed member 12 moves along an arc as indicated by the arrow X from the retracted position indicated by the dashed line in FIG. to the retracted position. Alternatively, the bladed member 12 may be manually moved by an operator.
　図２に示すように、ローラ１３は、第二コンベア１０の上面部１０ａから上方に離間して配置されている。また、図３に示すように、ローラ１３は、帯状ガラスフィルムＧの幅方向両端部に対応する位置に一対が設けられている。これらローラ１３は、中心軸（中心軸線）１７の廻りに回転可能とされたフリーローラ（回転駆動力が付与されないローラ）である。また、これらローラ１３は、第一コンベア９の幅方向両端の外側に配置された一対のアーム１９の先端部１９ａに中心軸１７を介して保持されている。一対のアーム１９は、第一コンベア９の下流側位置で基台２０に保持され且つ正逆回転可能に回転駆動力を付与される回転軸２１と一体的に回転する。基台２０は、床面等の上に固定設置されている。したがって、これらローラ１３は、図２に示す退避位置から矢印Ｂで示すように円弧に沿って下降し、その後に円弧に沿って退避位置まで上昇することができる。この場合、これらローラ１３の下降及び上昇はそれぞれ所定位置で規制される。この規制は、一対のアーム１９の正方向の回転動作及び逆方向の回転動作をそれぞれ所定位置で止めるストッパ（図示略）によって行われる。これらローラ１３の移動経路（矢印Ｂで示す経路）は、刃付き部材１２の移動経路（矢印Ａで示す経路）よりも下流側に位置している。なお、ローラ１３は、帯状ガラスフィルムＧの幅方向一端部に対応する位置から幅方向他端部に対応する位置まで延びる単一のローラ１３であってもよい。また、ローラ１３を下降及び上昇させる構成も、例えばエアシリンダやボールねじ機構等を用いたものであってもよい。このようにした場合には、ローラ１３を、例えば鉛直方向で一直線に沿って移動させることができる。 As shown in FIG. 2, the rollers 13 are spaced upward from the upper surface portion 10a of the second conveyor 10. As shown in FIG. Further, as shown in FIG. 3, a pair of rollers 13 are provided at positions corresponding to both ends of the band-shaped glass film G in the width direction. These rollers 13 are free rollers (rollers to which rotational driving force is not applied) rotatable around a central axis (center axis line) 17 . Further, these rollers 13 are held via a central shaft 17 by tip portions 19 a of a pair of arms 19 arranged outside of both ends in the width direction of the first conveyor 9 . The pair of arms 19 rotate integrally with a rotating shaft 21 which is held by a base 20 at a position downstream of the first conveyor 9 and to which rotational driving force is applied so as to rotate forward and reverse. The base 20 is fixedly installed on a floor surface or the like. Therefore, these rollers 13 can descend from the retracted position shown in FIG. 2 along an arc as indicated by arrow B, and then ascend along the arc to the retracted position. In this case, the descent and ascent of these rollers 13 are restricted at predetermined positions. This regulation is performed by stoppers (not shown) that stop the forward and reverse rotational movements of the pair of arms 19 at predetermined positions. The movement path of these rollers 13 (the path indicated by arrow B) is positioned downstream of the movement path of the bladed member 12 (the path indicated by arrow A). The roller 13 may be a single roller 13 that extends from a position corresponding to one widthwise end of the strip glass film G to a position corresponding to the other widthwise end. Also, the structure for lowering and raising the roller 13 may be one using, for example, an air cylinder or a ball screw mechanism. In this case, the roller 13 can be moved, for example, along a straight line in the vertical direction.
　次に、以上のような構成を備えたガラス板製造装置１を用いたガラス板製造方法について説明する。 Next, a method for manufacturing a glass plate using the glass plate manufacturing apparatus 1 having the configuration described above will be described.
　本実施形態に係るガラス板製造方法は、成形工程と、横搬送工程と、切断工程とを備えている。 The glass plate manufacturing method according to this embodiment includes a forming process, a horizontal conveying process, and a cutting process.
　成形工程は、成形体７、熱処理部、及び冷却部により帯状ガラスフィルムＧを成形する工程である。 The forming step is a step of forming the band-shaped glass film G by the formed body 7, the heat treatment section, and the cooling section.
　横搬送工程は、成形後の帯状ガラスフィルムＧ及び切り取られた所定長さのガラスフィルムＧ１を横方向に搬送する工程である。 The horizontal conveying step is a step of horizontally conveying the band-shaped glass film G after molding and the cut glass film G1 of a predetermined length.
　切断工程は、横搬送手段４により搬送されている帯状ガラスフィルムＧを幅方向に切断して所定長さのガラスフィルムＧ１を切り取る工程である。 The cutting step is a step of cutting the band-shaped glass film G conveyed by the horizontal conveying means 4 in the width direction to cut out the glass film G1 of a predetermined length.
　詳述すると、切断工程では、先ず、図５に示すように、刃付き部材１２を矢印Ａ方向に移動させて、切れ刃１２ａを帯状ガラスフィルムＧの下面Ｇｂに突き当てる。詳しくは、帯状ガラスフィルムＧが第一コンベア９の下流側端部９ｘから第二コンベア１０の上面部１０ａに至るまでの間、つまり傾斜状態にある帯状ガラスフィルムＧの下面Ｇｂに切れ刃１２ａを突き当てる。これにより、当該下面Ｇｂに傷Ｇｘが形成される。この場合、第一コンベア９と第二コンベア１０との間の隙間２２が、刃付き部材１２の挿入用隙間として有効利用される。本実施形態では、第一コンベア９と第二コンベア１０とが上下に離間しているため、刃付き部材１２を矢印Ａで示すように傾斜させて挿入する際には、十分な大きさの隙間２２を確保でき、作業性が良くなる。なお、切れ刃１２ａを帯状ガラスフィルムＧの下面Ｇｂに突き当てた際には、突き当てと同時に、刃付き部材１２を帯状ガラスフィルムＧの幅方向に所定長さだけスライドさせてもよい。 Specifically, in the cutting step, first, as shown in FIG. Specifically, the strip glass film G extends from the downstream end 9x of the first conveyor 9 to the upper surface 10a of the second conveyor 10, that is, the cutting edge 12a is placed on the lower surface Gb of the strip glass film G in an inclined state. Strike. As a result, a scratch Gx is formed on the lower surface Gb. In this case, the gap 22 between the first conveyor 9 and the second conveyor 10 is effectively used as a gap for inserting the bladed member 12 . In this embodiment, since the first conveyor 9 and the second conveyor 10 are separated vertically, when inserting the bladed member 12 at an angle as indicated by the arrow A, a sufficiently large gap is required. 22 can be secured, and workability is improved. When the cutting edge 12a abuts against the lower surface Gb of the strip glass film G, the bladed member 12 may be slid in the width direction of the strip glass film G by a predetermined length at the same time as the abutment.
　さらに、帯状ガラスフィルムＧが第一コンベア９の下流側端部９ｘから第二コンベア１０の上面部１０ａに至るまでの間は、帯状ガラスフィルムＧは下流側に向かって下降傾斜している。これに対して、刃付き部材１２は、下流側に向かって上昇傾斜する方向（矢印Ａ方向）に移動する。したがって、刃付き部材１２を移動させる方向は、帯状ガラスフィルムＧに対して、適切な角度で交差することになる。すなわち、交差角度を直角に近づけることができる。これにより、帯状ガラスフィルムＧの下面Ｇｂに適切に傷Ｇｘを形成することができる。 Furthermore, between the downstream end 9x of the first conveyor 9 and the upper surface 10a of the second conveyor 10, the glass strip G slopes downward toward the downstream side. On the other hand, the bladed member 12 moves in a direction (direction of arrow A) that inclines upward toward the downstream side. Therefore, the direction in which the bladed member 12 is moved intersects the band-shaped glass film G at an appropriate angle. That is, the crossing angle can be made closer to a right angle. Thereby, the scratches Gx can be appropriately formed on the lower surface Gb of the band-shaped glass film G. As shown in FIG.
　しかも、傾斜状態にある帯状ガラスフィルムＧの下方には大きな空間２３が形成されている。この大きな空間２３は、刃付き部材１２で上記の傷Ｇｘを形成するための作業用空間として有効利用される。詳述すると、帯状ガラスフィルムＧの厚みや品種が変更された場合には、傾斜状態にある帯状ガラスフィルムＧの水平面に対する傾斜角度が変わる。この場合には、刃付き部材１２を移動させる際の水平面に対する傾斜角度も変える必要がある。ここでの構成では、上記の作業用空間２３が大きいことで、このような要請に的確に応じることができ、作業性が良くなる。 Moreover, a large space 23 is formed below the strip glass film G in the inclined state. This large space 23 is effectively used as a working space for forming the above-mentioned scratches Gx with the bladed member 12 . More specifically, when the thickness or type of the strip glass film G is changed, the tilt angle of the tilted strip glass film G with respect to the horizontal plane changes. In this case, it is also necessary to change the angle of inclination with respect to the horizontal plane when moving the bladed member 12 . In the configuration here, since the work space 23 is large, such a request can be accurately met, and workability is improved.
　図６は、帯状ガラスフィルムＧの下面Ｇｂに傷Ｇｘが形成された状態を示す下面図である。同図に示すように、傷Ｇｘは、帯状ガラスフィルムＧの幅方向一端側に形成されている。帯状ガラスフィルムＧの幅方向両端部には、その中央側領域（有効領域）Ｇｃよりも厚みの大きな耳部Ｇｄがそれぞれ形成されている。本実施形態では、傷Ｇｘは、一方の耳部Ｇｄから有効領域Ｇｃに跨って形成されている。傷Ｇｘは、幅方向に沿って延び、その幅方向長さは、例えば５～３０ｍｍ、好ましくは下限値が１０ｍｍ、上限値が２０ｍｍである。なお、傷Ｇｘの形成箇所は、耳部Ｇｄの近傍の有効領域Ｇｃのみであってもよく、耳部Ｇｄのみであってもよい。また、傷Ｇｘは、帯状ガラスフィルムＧの幅方向両端側にそれぞれ形成されていてもよい。 FIG. 6 is a bottom view showing a state in which scratches Gx are formed on the bottom surface Gb of the band-shaped glass film G. As shown in the figure, the scratch Gx is formed at one end of the strip glass film G in the width direction. Ear portions Gd having a thickness greater than that of the central region (effective region) Gc are formed at both ends of the band-shaped glass film G in the width direction. In this embodiment, the scratch Gx is formed across the effective area Gc from one ear Gd. The flaw Gx extends along the width direction, and the length in the width direction is, for example, 5 to 30 mm, preferably with a lower limit of 10 mm and an upper limit of 20 mm. It should be noted that the location where the scratch Gx is formed may be only the effective area Gc near the ear portion Gd or only the ear portion Gd. Also, the scratches Gx may be formed at both ends of the strip glass film G in the width direction.
　この後は、図７に示すように、刃付き部材１２を退避させた状態で、ローラ１３を矢印Ｂ方向に下降させ、傾斜状態にある帯状ガラスフィルムＧの上面Ｇａに接触して押し付け力を作用させる。このとき、ローラ１３は、矢印Ｚ方向に回転する。これにより、帯状ガラスフィルムＧの上面Ｇａに擦れ傷が付く等の不具合が回避される。また、傾斜状態にある帯状ガラスフィルムＧは、第二コンベア１０の上面部１０ａに滑らかに湾曲して連なっているため、この連なり部に屈曲変形等が生じない。したがって、帯状ガラスフィルムＧが、この連なり部で破損する等の不具合が回避される。 After that, as shown in FIG. 7, with the bladed member 12 retracted, the roller 13 is lowered in the direction of the arrow B to come into contact with the upper surface Ga of the strip glass film G in the inclined state and apply a pressing force. act. At this time, the roller 13 rotates in the arrow Z direction. As a result, problems such as scratches on the upper surface Ga of the band-shaped glass film G can be avoided. In addition, since the strip glass film G in the inclined state is smoothly curved and connected to the upper surface portion 10a of the second conveyor 10, bending deformation or the like does not occur in this connected portion. Therefore, problems such as breakage of the band-shaped glass film G at this continuous portion can be avoided.
　この時点では、図８に示すように、一対のローラ１３は、帯状ガラスフィルムＧの幅方向両端部の耳部Ｇｄのみをそれぞれ押し付けており、有効領域Ｇｃには接触していない。これにより、有効領域Ｇｃに接触傷が付く等の不具合が回避され、有効領域Ｇｃが適切に保護される。なお、一対のローラ１３に代えて、既述の単一のローラを使用した場合であっても、同様にして有効領域Ｇｃが適切に保護される。 At this point, as shown in FIG. 8, the pair of rollers 13 presses only the tabs Gd at both ends in the width direction of the strip glass film G, and does not contact the effective area Gc. As a result, problems such as contact scratches on the effective area Gc are avoided, and the effective area Gc is appropriately protected. It should be noted that the effective area Gc is appropriately protected in the same manner even if the single roller described above is used instead of the pair of rollers 13 .
　ここで、図７を参照して、傾斜状態にある帯状ガラスフィルムＧの下方には、既述のように大きな空間２３が形成されていたため、ローラ１３を下降させる際には、帯状ガラスフィルムＧに十分な大きさの押し付け力が作用するまでローラ１３を下降させることができる。この十分な大きさの押し付け力が、帯状ガラスフィルムＧの傷Ｇｘの形成領域に作用した場合には、傷Ｇｘが帯状ガラスフィルムＧの幅方向に進展する。本実施形態では、帯状ガラスフィルムＧの搬送に伴って傷Ｇｘがローラ１３の移動経路（矢印Ｂに沿う経路）に到達した時点で、傷Ｇｘを進展させるために十分な押し付け力が帯状ガラスフィルムＧに作用するようにローラ１３が下降する。なお、上述の「傷Ｇｘの形成領域」とは、帯状ガラスフィルムＧの傷Ｇｘを含むその幅方向全長に亘る領域を意味している。なぜなら、傷Ｇｘのみに上述の十分な押し付け力が作用しても、傷Ｇｘが適切に進展するとは限らず、傷Ｇｘが進展すべき幅方向全長にわたる領域に上述の十分な押し付け力が作用することで、傷Ｇｘが適切に進展するからである。 Here, referring to FIG. 7, since the large space 23 was formed below the strip glass film G in the inclined state as described above, when the roller 13 is lowered, the strip glass film G The roller 13 can be lowered until a pressing force of sufficient magnitude is applied. When this sufficiently large pressing force acts on the formation area of the scratch Gx of the strip glass film G, the scratch Gx develops in the width direction of the strip glass film G. In the present embodiment, when the scratch Gx reaches the movement path of the roller 13 (the path along the arrow B) as the strip glass film G is conveyed, a pressing force sufficient to develop the scratch Gx is applied to the strip glass film G. Roller 13 descends to act on G. In addition, the above-mentioned "formation area of the scratch Gx" means the area including the scratch Gx of the band-shaped glass film G and covering the entire length in the width direction. This is because even if the above-mentioned sufficient pressing force acts only on the scratch Gx, the scratch Gx does not necessarily grow appropriately, and the above-mentioned sufficient pressing force acts on the region over the entire width direction where the scratch Gx should grow. This is because the flaw Gx is appropriately propagated.
　そして、傷Ｇｘが帯状ガラスフィルムＧの幅方向に適切に進展することで、図９に示すように、帯状ガラスフィルムＧが幅方向に切断されて、所定長さのガラスフィルムＧ１が切り取られる。この場合、ローラ１３は、第二コンベア１０の上面部１０ａを押し付ける以前に、その下降が既述のストッパによって規制される。そのため、ローラ１３を帯状ガラスフィルムが切断するまで下降させても、ローラ１３が第二コンベア１０の上面部１０ａを押し付けることはない。これにより、第二コンベア１０がローラ１３からの衝撃を受けて損傷する等の不具合が回避される。 Then, as the flaw Gx appropriately develops in the width direction of the strip glass film G, as shown in FIG. 9, the strip glass film G is cut in the width direction, and the glass film G1 of a predetermined length is cut off. In this case, before the roller 13 presses against the upper surface portion 10a of the second conveyor 10, its descent is restricted by the previously described stopper. Therefore, even if the roller 13 is lowered until the strip glass film is cut, the roller 13 does not press the upper surface portion 10 a of the second conveyor 10 . As a result, problems such as damage to the second conveyor 10 due to the impact from the roller 13 can be avoided.
　この切断が行われた後に、ローラ１３は鎖線で示す退避位置に向かって上昇する。したがって、帯状ガラスフィルムＧの切断側端部Ｇｅがローラ１３に引っ掛かる等の事態が生じ難くなり、帯状ガラスフィルムＧの搬送が円滑に行われる。また、この時点では、帯状ガラスフィルムＧの切断側端部Ｇｅと、切り取られたガラスフィルムＧ１の切断側端部Ｇｆとが、第二コンベア１０の上面部１０ａで適正に受け止められる。したがって、この両切断側端部Ｇｅ、Ｇｆが垂れ下がったり或いは屈曲変形したりする等の不具合が回避される。さらに、この時点では、第一コンベア９よりも第二コンベア１０の方が搬送速度が高いため、両切断側端部Ｇｅ、Ｇｆは適切に離間した状態になる。これにより、両切断側端部Ｇｅ、Ｇｆ同士が接触することによって両者Ｇ、Ｇ１に破損や損傷が生じる等の不具合が回避される。また、このとき、先行して切り取られているガラスフィルムＧ１には、第三コンベア１１からの搬送力が主として働いている。第三コンベア１１は、第二コンベア１０よりも搬送速度が高いため、これらガラスフィルムＧ１の両切断側端部Ｇｈ、Ｇｉは、より一層離間した状態になる。これにより、これらガラスフィルムＧ１の両切断側端部Ｇｈ、Ｇｉ同士の接触が確実に阻止されるだけでなく、先行するガラスフィルムＧ１に対して後処理（例えばパレット６への収納処理）をする際に後続のガラスフィルムＧ１が邪魔になる等の不具合が回避される。 After this cutting is performed, the roller 13 rises toward the retracted position indicated by the dashed line. Therefore, the cut edge Ge of the strip glass film G is less likely to be caught by the roller 13, and the strip glass film G is smoothly transported. Also, at this point, the cut edge Ge of the strip glass film G and the cut edge Gf of the cut glass film G1 are properly received by the upper surface portion 10a of the second conveyor 10 . Therefore, problems such as sagging or bending deformation of both cut side ends Ge and Gf can be avoided. Furthermore, at this time point, since the second conveyor 10 has a higher transport speed than the first conveyor 9, both cutting side edges Ge and Gf are appropriately spaced apart. As a result, problems such as breakage or damage to both G and G1 due to contact between the cut side ends Ge and Gf can be avoided. Also, at this time, the conveying force from the third conveyor 11 is mainly acting on the glass film G1 that has been cut in advance. Since the third conveyor 11 has a higher transport speed than the second conveyor 10, both the cut side ends Gh and Gi of the glass film G1 are further separated from each other. As a result, not only is the contact between the cut side ends Gh and Gi of the glass films G1 reliably prevented, but also the preceding glass film G1 is post-processed (for example, stored in the pallet 6). This avoids problems such as obstruction of the subsequent glass film G1.
　＜第二実施形態＞
　図１０は、本発明の第二実施形態に係る切断工程を実行している状態を示す要部概略側面図である。この第二実施形態に係る切断工程が、既述の第一実施形態に係る切断工程と相違している点は、帯状ガラスフィルムＧのローラ１３による押し付け力が作用している領域に、刃付き部材１２の切れ刃１２aを突き当てるところにある。この場合、帯状ガラスフィルムＧに押し付け力を作用させる時と、切れ刃１２aを突き当てる時とは同時であってもよく、或いは、帯状ガラスフィルムＧに押し付け力を作用させた後に、切れ刃１２aを突き当てるようにしてもよい。その他の構成は、既述の第一実施形態と同一であるので、両実施形態に共通の構成要素については図１０に同一の符号を付し、その説明を省略する。 <Second embodiment>
FIG. 10 is a schematic side view of essential parts showing a state in which a cutting step according to the second embodiment of the present invention is being performed. The cutting process according to the second embodiment is different from the cutting process according to the first embodiment described above in that the area where the pressing force of the roller 13 of the band-shaped glass film G is acting is provided with a blade. It is located where the cutting edge 12a of the member 12 abuts. In this case, when the pressing force is applied to the strip glass film G and when the cutting edge 12a is abutted, the cutting edge 12a may be applied at the same time, or after the pressing force is applied to the strip glass film G. may be pushed. Since the rest of the configuration is the same as that of the first embodiment already described, constituent elements common to both embodiments are denoted by the same reference numerals in FIG. 10, and descriptions thereof are omitted.
　＜第三実施形態＞
　図１１は、本発明の第三実施形態に係る製造装置１の全体構成を模式的に示す概略側面図である。同図に示すように、この第三実施形態に係る製造装置１が、既述の第一実施形態に係る製造装置１と相違している点は、第一コンベア９の上流側に、帯状ガラスフィルムＧの耳部Ｇｄ（詳しくは、耳部Ｇｄを含む不要部）を切断して除去する装置２４を配備したとこにある。この装置２４は、方向変換部３を経た帯状ガラスフィルムＧを２台の上流側コンベア２５により横方向に搬送している途中で、レーザー切断機２６により帯状ガラスフィルムＧの耳部Ｇｄを切断分離し、切断分離後の耳部Ｇｄを傾斜コンベア２７により搬送して回収するものである。なお、レーザー切断機２６は、その下方の帯状ガラスフィルムＧに対して、レーザー２８の照射と冷媒２９の噴射とを行うことで耳部Ｇｄの切断分離を行う。この第三実施形態によれば、耳部Ｇｄが除去された有効領域の帯状ガラスフィルムＧｃｃに対して、既述の第一実施形態と同様の切断工程を実行し、所定長さのガラスフィルムＧ１ｃを切り取ることができる。その他の構成は、既述の第一実施形態と同一であるので、両実施形態に共通の構成要素については図１１に同一の符号を付し、その説明を省略する。 <Third embodiment>
FIG. 11 is a schematic side view schematically showing the overall configuration of the manufacturing apparatus 1 according to the third embodiment of the invention. As shown in the figure, the manufacturing apparatus 1 according to the third embodiment is different from the manufacturing apparatus 1 according to the first embodiment described above in that a ribbon glass is provided on the upstream side of the first conveyor 9. A device 24 is provided for cutting and removing the edge portion Gd of the film G (more specifically, the unnecessary portion including the edge portion Gd). This device 24 cuts and separates the edges Gd of the strip glass film G with a laser cutting machine 26 while the strip glass film G that has passed through the direction changing section 3 is being transported in the horizontal direction by two upstream conveyors 25. Then, the selvage Gd after being cut and separated is conveyed by the inclined conveyor 27 and collected. Note that the laser cutting machine 26 irradiates the band-shaped glass film G thereunder with a laser 28 and jets a coolant 29 to cut and separate the ear portions Gd. According to the third embodiment, the strip-shaped glass film Gcc in the effective region from which the ear portions Gd have been removed is subjected to the same cutting process as in the first embodiment described above, thereby cutting the glass film G1c into a predetermined length. can be cut out. Since the rest of the configuration is the same as that of the first embodiment already described, constituent elements common to both embodiments are denoted by the same reference numerals in FIG. 11, and descriptions thereof are omitted.
　＜第四実施形態＞
　図１２は、本発明の第四実施形態に係る切断工程を実行している状態を示す要部概略側面図である。この第四実施形態に係る切断工程が、既述の第一実施形態に係る切断工程と相違している点は、ローラ１３よりも下流側の位置で帯状ガラスフィルムＧを上方に持ち上げることで、帯状ガラスフィルムＧの傷Ｇｘの形成領域に、ローラ１３による押し付け力を作用させて、帯状ガラスフィルムＧを切断するところにある。この場合も、帯状ガラスフィルムＧを持ち上げてローラ１３による押し付け力を作用させている領域に、傷Ｇｘを形成してもよい。この切断工程の実行に際しては、横搬送手段４として、第一コンベア９の下流側にコンベアを設けなくてもよい。この場合、ローラ１３は、第一コンベア９の上面部９ａと同一の高さ位置もしくは僅かに低い位置に固定設置されることが好ましい。また、刃付き部材１２は、真上に移動して帯状ガラスフィルムＧの下面Ｇｂに傷Ｇｘを形成することが好ましい。さらに、帯状ガラスフィルムＧの持ち上げは、作業者の手作業で行うことが好ましい。この場合、ローラ１３よりも高い位置まで帯状ガラスフィルムＧを持ち上げることが好ましい。なお、作業者の手作業に代えて、帯状ガラスフィルムＧを把持部材や吸着パッドで保持した状態でそれらを上動させる機構などを用いて持ち上げるようにしてもよい。 <Fourth embodiment>
FIG. 12 is a schematic side view of essential parts showing a state in which a cutting process according to a fourth embodiment of the present invention is being performed. The cutting process according to the fourth embodiment differs from the cutting process according to the first embodiment described above in that the band-shaped glass film G is lifted upward at a position downstream of the roller 13. The pressing force of the roller 13 is applied to the formation area of the scratch Gx of the band-shaped glass film G, and the band-shaped glass film G is cut. Also in this case, the scratch Gx may be formed in the area where the strip glass film G is lifted and the pressing force of the roller 13 is applied. When executing this cutting step, it is not necessary to provide a conveyor downstream of the first conveyor 9 as the horizontal conveying means 4 . In this case, the rollers 13 are preferably fixedly installed at the same height position as the upper surface portion 9a of the first conveyor 9 or at a slightly lower position. Moreover, it is preferable that the bladed member 12 moves right up to form a scratch Gx on the lower surface Gb of the band-shaped glass film G. As shown in FIG. Furthermore, it is preferable that the strip glass film G is lifted manually by an operator. In this case, it is preferable to lift the strip glass film G to a position higher than the rollers 13 . In addition, instead of the operator's manual work, the belt-shaped glass film G may be lifted using a mechanism or the like that moves upward while holding the strip-shaped glass film G with a gripping member or a suction pad.
　以上、本発明の実施形態に係るガラス板製造装置及びその製造方法について説明したが、本発明の実施の形態はこれに限定されるものではなく、本発明の要旨を逸脱しない範囲で種々変更を施すことが可能である。 Although the glass plate manufacturing apparatus and manufacturing method according to the embodiment of the present invention have been described above, the embodiment of the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention. It is possible to apply
　以上の実施形態では、帯状ガラスフィルムＧをオーバーフローダウンドロー法により成形したが、スロットダウンドロー法やリドロー法などの他のダウンドロー法や、フロート法などにより成形してもよい。 In the above embodiment, the strip glass film G is formed by the overflow down-draw method, but it may be formed by other down-draw methods such as the slot down-draw method and the redraw method, or by the float method.
　以上の実施形態では、作用部材をローラとしたが、帯状ガラスフィルムに押し付け力を作用させることができる部材であれば、他の部材であってもよい。 In the above embodiment, the acting member is a roller, but other member may be used as long as it can apply a pressing force to the band-shaped glass film.
　以上の実施形態では、横搬送工程で帯状ガラスフィルムの下面が各コンベアの上面部と接触しているが、帯状ガラスフィルムと各コンベアの上面部との間に発泡樹脂シート等の保護シートが介在されるようにしてもよい。このようにする場合には、第一コンベア９での搬送終了時に保護シートを回収するか、帯状ガラスフィルムの下面に傷を形成することができるように、保護シートの幅方向長さを短くしておく必要がある。 In the above embodiments, the lower surface of the strip glass film is in contact with the upper surface of each conveyor in the horizontal conveying process, but a protective sheet such as a foamed resin sheet is interposed between the strip glass film and the upper surface of each conveyor. may be made. In this case, the length of the protective sheet in the width direction is shortened so that the protective sheet can be collected at the end of transportation on the first conveyor 9, or the lower surface of the band-shaped glass film can be scratched. need to keep
　以上の実施形態では、第一コンベアと第二コンベアとが横方向で重なり合い且つ上下方向で離間しているが、図１３に符号Ｙ１で示すように、第一コンベア９と第二コンベア１０とが横方向で離間し且つ上下方向で離間するようにしてもよく、或いは、同図に符号Ｙ２で示すように、第一コンベア９と第二コンベア１０とが横方向で離間し且つ上下方向で重なり合うようにしてもよい。 In the above embodiment, the first conveyor and the second conveyor overlap each other in the horizontal direction and are spaced apart in the vertical direction. The first conveyor 9 and the second conveyor 10 may be horizontally spaced and vertically spaced apart, or as indicated by symbol Y2 in the figure, the first conveyor 9 and the second conveyor 10 may be horizontally spaced and vertically overlapped. You may do so.
　以上の実施形態では、横搬送手段を構成する第一搬送手段、第二搬送手段及び第三搬送手段を、ベルトコンベアとしたが、ローラコンベア等の他の搬送手段であってもよい。 In the above embodiment, the first transport means, the second transport means, and the third transport means constituting the horizontal transport means are belt conveyors, but other transport means such as roller conveyors may be used.
１     ガラス板製造装置
２     成形手段
４     横搬送手段
５     切断手段
９     第一コンベア（第一搬送手段）
９ａ   第一コンベアの上部（上面部）
９ｘ   第一コンベアの下流側端部
１０   第二コンベア（第二搬送手段）
１０ａ 第二コンベアの上部（上面部）
１１   第三コンベア（第三搬送手段）
１３   ローラ（作用部材）
１７   ローラの中心軸（中心軸線）
２２   両搬送手段間の隙間
Ｇ     帯状ガラスフィルム
Ｇｃ   有効領域の帯状ガラスフィルム
Ｇ１   ガラスフィルム
Ｇ１ｃ ガラスフィルム
Ｇｂ   帯状ガラスフィルムの下面
Ｇｄ   耳部
Ｇｘ   傷 1 glass plate manufacturing apparatus 2 forming means 4 horizontal conveying means 5 cutting means 9 first conveyor (first conveying means)
9a Upper part of the first conveyor (top part)
9x Downstream end of first conveyor 10 Second conveyor (second conveying means)
10a Upper part of the second conveyor (upper surface part)
11 third conveyor (third conveying means)
13 Roller (action member)
17 Roller central axis (central axis)
22 Gap between both transportation means G Strip-shaped glass film Gc Strip-shaped glass film in effective area G1 Glass film G1c Glass film Gb Lower surface of strip-shaped glass film Gd Edge Gx Scratches

Claims (14)

  1. 　帯状ガラスフィルムを成形する成形工程と、横搬送手段により前記帯状ガラスフィルムを横方向に搬送する横搬送工程と、前記横搬送工程の実行中に前記帯状ガラスフィルムを幅方向に切断して所定長さのガラスフィルムを切り取る切断工程とを備えたガラスフィルム製造方法であって、
    　前記切断工程では、前記帯状ガラスフィルムの下面の一部に切断起点となる傷を形成する処理と、前記帯状ガラスフィルムの上方に配置された作用部材から前記帯状ガラスフィルムに押し付け力を作用させる処理とを行い、前記作用部材からの押し付け力により、前記傷を前記帯状ガラスの幅方向に進展させて、前記帯状ガラスフィルムを切断することを特徴とするガラスフィルム製造方法。     A forming step of forming a band-shaped glass film, a horizontal conveying step of conveying the band-shaped glass film in the horizontal direction by a horizontal conveying means, and a predetermined length by cutting the band-shaped glass film in the width direction during the horizontal conveying step. A glass film manufacturing method comprising a cutting step of cutting a glass film of thickness,
    In the cutting step, a process of forming a scratch as a cutting starting point on a part of the lower surface of the strip glass film, and a process of applying a pressing force to the strip glass film from an acting member arranged above the strip glass film. and cutting the strip glass film by extending the scratch in the width direction of the strip glass by the pressing force from the acting member.
  2. 　前記切断工程では、前記帯状ガラスフィルムに前記傷を形成した後、前記傷の形成領域に前記押し付け力を作用させるか、または、前記帯状ガラスフィルムの前記押し付け力を作用させている領域に、前記傷を形成する請求項１に記載のガラスフィルム製造方法。 In the cutting step, after the scratch is formed on the strip glass film, the pressing force is applied to the scratch forming region, or the pressing force is applied to the region of the strip glass film to which the pressing force is applied. The glass film manufacturing method according to claim 1, wherein scratches are formed.
  3. 　前記作用部材は、前記帯状ガラスフィルムの幅方向に沿う中心軸線を有するローラであって、前記ローラは、少なくとも前記帯状ガラスフィルムに前記押し付け力を作用させる時に、前記中心軸線の廻りに回転する請求項１または２に記載のガラスフィルム製造方法。 The acting member is a roller having a central axis along the width direction of the band-shaped glass film, and the roller rotates around the central axis at least when the pressing force is applied to the band-shaped glass film. Item 3. The method for producing a glass film according to item 1 or 2.
  4. 　前記帯状ガラスフィルムは、幅方向両端部にその中央側よりも厚みが大きい耳部をそれぞれ有し、それら耳部の一方のみまたは双方のみと、前記作用部材との押し付け動作によって、前記帯状ガラスフィルムに前記押し付け力を作用させる請求項１～３の何れかに記載のガラスフィルム製造方法。 The band-shaped glass film has lugs at both ends in the width direction, the thickness of which is greater than that of the central side. The glass film manufacturing method according to any one of claims 1 to 3, wherein the pressing force is applied to the.
  5. 　前記横搬送手段として、第一搬送手段と、前記第一搬送手段の下流側に隣り合って配置され且つ前記第一搬送手段よりも低い位置に配置された第二搬送手段とを有する請求項１～４の何れかに記載のガラスフィルム製造方法。 2. The horizontal conveying means includes a first conveying means and a second conveying means arranged adjacent to the downstream side of the first conveying means and at a position lower than the first conveying means. 5. The method for producing a glass film according to any one of -4.
  6. 　前記第一搬送手段と前記第二搬送手段との間の隙間を利用して、前記帯状ガラスフィルムの下面に前記傷を形成する請求項５に記載のガラスフィルム製造方法。 The glass film manufacturing method according to claim 5, wherein the scratches are formed on the lower surface of the band-shaped glass film by using the gap between the first conveying means and the second conveying means.
  7. 　前記帯状ガラスフィルムが前記第一搬送手段の下流側端部から前記第二搬送手段の上部に至るまでの間に、前記帯状ガラスフィルムの下面に前記傷を形成する請求項６に記載のガラスフィルム製造方法。 7. The glass film according to claim 6, wherein the scratch is formed on the lower surface of the strip glass film from the downstream end of the first transport means to the upper part of the second transport means. Production method.
  8. 　前記帯状ガラスフィルムが前記第一搬送手段の下流側端部から前記第二搬送手段の上部に至るまでの間に、前記帯状ガラスフィルムに前記押し付け力を作用させる請求項５～７の何れかに記載のガラスフィルム製造方法。 8. Any one of claims 5 to 7, wherein the pressing force is applied to the band-shaped glass film from the downstream end of the first conveying means to the upper part of the second conveying means. The glass film manufacturing method described.
  9. 　前記作用部材を下降させて前記帯状ガラスフィルムに前記押し付け力を作用させることで前記帯状ガラスフィルムを切断する際に、前記作用部材が前記第二搬送手段の上部を押し付ける以前に前記作用部材の下降を規制する請求項８に記載のガラスフィルム製造方法。 When cutting the band-shaped glass film by lowering the action member to apply the pressing force to the band-shaped glass film, the action member descends before the action member presses the upper part of the second conveying means. The glass film manufacturing method according to claim 8, which regulates.
  10. 　前記第一搬送手段よりも前記第二搬送手段の方が、搬送速度が高い請求項５～９の何れかに記載のガラスフィルム製造方法。 The glass film manufacturing method according to any one of claims 5 to 9, wherein the second conveying means has a higher conveying speed than the first conveying means.
  11. 　前記横搬送手段として、前記第二搬送手段の下流側に隣り合って配置された第三搬送手段をさらに有し、前記第二搬送手段よりも前記第三搬送手段の方が、搬送速度が高い請求項５～１０の何れかに記載のガラスフィルム製造方法。 As the horizontal transport means, a third transport means is further provided downstream and adjacent to the second transport means, and the third transport means has a higher transport speed than the second transport means. The method for producing a glass film according to any one of claims 5 to 10.
  12. 　前記作用部材を下降させることで前記帯状ガラスフィルムに前記押し付け力を作用させて前記帯状ガラスを切断した後、前記作用部材を上昇させる請求項１～１１の何れかに記載のガラスフィルム製造方法。 The glass film manufacturing method according to any one of claims 1 to 11, wherein the operating member is lowered to apply the pressing force to the strip glass film to cut the strip glass, and then the operating member is raised.
  13. 　前記作用部材よりも下流側の位置で、前記帯状ガラスフィルムを上方に持ち上げることで、前記作用部材から前記帯状ガラスフィルムに前記押し付け力を作用させる請求項１～４の何れかに記載のガラスフィルム製造方法。 The glass film according to any one of claims 1 to 4, wherein the pressing force is applied from the acting member to the strip glass film by lifting the strip glass film upward at a position downstream of the acting member. Production method.
  14. 　帯状ガラスフィルムを成形する成形手段と、前記帯状ガラスフィルムを横方向に搬送する横搬送手段と、前記横搬送手段により搬送中の前記帯状ガラスフィルムを幅方向に切断して所定長さのガラスフィルムを切り取る切断手段とを備えたガラスフィルム製造装置であって、
    　前記切断手段は、前記帯状ガラスフィルムの下面の一部に切断起点となる傷を形成する処理と、前記帯状ガラスフィルムの上方に配置された作用部材から前記帯状ガラスフィルムに押し付け力を作用させる処理とを行う構成とされ、且つ、前記作用部材からの押し付け力により、前記傷を前記帯状ガラスの幅方向に進展させて、前記帯状ガラスフィルムを切断する構成とされることを特徴とするガラスフィルム製造装置。     A forming means for forming a strip glass film, a horizontal conveying means for conveying the strip glass film in a lateral direction, and a glass film having a predetermined length by cutting the strip glass film being transported by the lateral transport means in the width direction. A glass film manufacturing apparatus comprising a cutting means for cutting the
    The cutting means includes a process of forming a scratch as a cutting starting point on a part of the lower surface of the strip glass film, and a process of applying a pressing force to the strip glass film from an acting member arranged above the strip glass film. And, by the pressing force from the acting member, the scratch is propagated in the width direction of the strip glass, and the strip glass film is cut. manufacturing device.
PCT/JP2022/009545 2021-03-26 2022-03-04 Manufacturing method for glass film and manufacturing device for same WO2022202234A1 (en)

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JPH0952725A (en) * 1995-08-11 1997-02-25 Nippon Electric Glass Co Ltd Method for cutting thin sheet glass and device therefore
WO2015029669A1 (en) * 2013-08-28 2015-03-05 日本電気硝子株式会社 Method for conveying thin sheet glass, conveyance device, cutting method, and method for producing glass article
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