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WO2015029669A1 - Procédé pour transporter du verre à vitres mince, dispositif de transport, procédé de coupe et procédé de production d'un objet en verre - Google Patents

Procédé pour transporter du verre à vitres mince, dispositif de transport, procédé de coupe et procédé de production d'un objet en verre Download PDF

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Publication number
WO2015029669A1
WO2015029669A1 PCT/JP2014/069873 JP2014069873W WO2015029669A1 WO 2015029669 A1 WO2015029669 A1 WO 2015029669A1 JP 2014069873 W JP2014069873 W JP 2014069873W WO 2015029669 A1 WO2015029669 A1 WO 2015029669A1
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WO
WIPO (PCT)
Prior art keywords
thin glass
glass
cutting
width direction
arch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/069873
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English (en)
Japanese (ja)
Inventor
剛夫 谷田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Electric Glass Co Ltd
Original Assignee
Nippon Electric Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2013176869A external-priority patent/JP6056710B2/ja
Priority claimed from JP2013176870A external-priority patent/JP6056711B2/ja
Application filed by Nippon Electric Glass Co Ltd filed Critical Nippon Electric Glass Co Ltd
Publication of WO2015029669A1 publication Critical patent/WO2015029669A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/09—Severing cooled glass by thermal shock
    • C03B33/091—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam
    • 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
    • C03B33/0215—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the ribbon being in a substantially vertical plane
    • 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
    • C03B33/0235—Ribbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/32—Arrangements for turning or reversing webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/61—Display device manufacture, e.g. liquid crystal displays

Definitions

  • the present invention relates to a thin glass conveying method, a conveying device, a cutting method, and a glass article including the thin glass, when the thin glass formed into a long band shape is cut (cleaved) while being conveyed in the longitudinal direction. It relates to the technology of the manufacturing method.
  • the thin glass is formed into a long and strip shape by, for example, an overflow / down-draw method. At this time, a thick bead is formed at both end portions in the width direction of the formed thin glass compared to the center portion in the width direction.
  • the glass sheet formed by the overflow down-draw method is cut (cleaved) in the width direction while having a bead while being conveyed in the longitudinal direction, and then cut into sheets of a predetermined size, and thereafter The both side ends including the beads are cut (cleaved) in the longitudinal direction of the thin glass to be removed, thereby forming a glass substrate having a uniform thickness.
  • a method for cutting (cleaving) a plate glass conventionally, a method of forming a scribe on a glass with a cutter and cleaving the glass is known. Specifically, the cutter blade is pressed against the glass surface of the plate glass to form a scribe line, and the plate glass is cut (cleaved) by bending along the scribe line.
  • a cleaving method for forming a scribe with a laser has recently attracted attention as a method for cutting (cleaving) a sheet glass (see, for example, “Patent Document 1”).
  • a cleaving method for forming a scribe by a laser it is not necessary to press the cutter blade against the plate glass, so that the plate glass is not damaged due to the pressing force of the cutter blade.
  • the plate thickness of the plate glass becomes thinner, bending and wrinkles are more likely to occur, so that even with a cutting method using a laser, the plate glass may not be cut well.
  • the glass surface tends to be out of focus of the laser.
  • the plate glass is conveyed in the horizontal direction as in Patent Document 1, the sheet-like thin plate glass is likely to be wrinkled, so that the flatness of the glass surface is lowered and the glass surface is likely to be out of focus of the laser. Become.
  • the present invention has been made in view of the above-described current problems, and transport of thin glass when cutting (cleaving) a thin glass sheet formed into a long strip shape while transporting it in the longitudinal direction.
  • a method and a transport apparatus for transporting and transporting a thin glass which can stably cut (cleave) the thin glass and can improve the quality of the thin glass after the cutting (cleaving). It is an object to provide an apparatus.
  • the present invention also relates to a method for cutting a thin glass and a method for producing a glass article including the thin glass when the thin glass formed into a long band is cut (cleaved) while being conveyed in the longitudinal direction. In addition, it is possible to stably cut (cleave) the thin glass, and to improve the quality of the cut (cleaved) portion, and to manufacture a glass article including the thin glass It is an object to provide a method.
  • the thin glass transport method according to claim 1 of the present invention is a thin glass transport method for transporting a thin glass sheet formed in a long strip shape in the longitudinal direction, and on the transport path of the thin glass.
  • an arch step is provided in which the intermediate portion in the conveyance direction of the thin glass is conveyed while being deformed and held in an arch shape curved upward along the longitudinal direction.
  • the conveyance method of the thin glass which concerns on Claim 2 of this invention is a catenary process which deform
  • the thin glass is deformed and held into the arch shape by a plurality of support mechanisms arranged in parallel in the width direction of the thin glass. It is performed by supporting both ends in the width direction on the lower surface side of the thin glass, and each of the support mechanism portions is arranged in a convex arc shape along the conveying direction of the thin glass, and the lower surface of the thin glass And a plurality of support members that come into contact with each other.
  • the support mechanism portion includes an arrangement variable mechanism that changes a position of the support member to change a radius of the arc shape.
  • the plurality of support mechanism portions further support a central portion in the width direction on the lower surface side of the thin glass plate.
  • the thin glass conveying method according to claim 5 of the present invention is characterized in that the support member is a ball caster.
  • the conveyance method of the thin glass which concerns on Claim 6 of this invention WHEREIN: By pressing at least any one of the side end surfaces of the said thin glass to the inner side of the width direction of the said thin glass in the said arch process, The position of the thin glass sheet in the width direction is controlled.
  • the conveyance method of the thin glass which concerns on Claim 7 of this invention supports the both ends of the width direction of the said thin glass in the upstream part and / or downstream part of the said arch process, and conveys the said thin glass.
  • a feeding roller that feeds in a direction, and changing a feeding direction of the thin glass by the feeding roller in a direction inclined with respect to the transport direction according to a width direction position of the thin glass, the thin plate The position of the width direction of glass is controlled.
  • the thin glass conveyance device is a thin glass conveyance device for conveying the thin glass formed into a long band shape in the longitudinal direction, and is on the conveyance path of the thin glass. Characterized in that it comprises an arch zone in which an arch step is carried out while deforming and holding an intermediate portion in the conveyance direction of the thin glass in an arch shape that curves upward along the longitudinal direction at a predetermined position. To do.
  • the thin glass cutting method which concerns on Claim 9 of this invention is a thin glass cutting method which cut
  • the said thin glass Are transported while maintaining the vertical position or the tilted posture in which the downstream side in the transport direction of the thin glass is positioned below and the vertical glass is held in the vertical posture or the tilted posture by the cutting means. It is characterized by comprising a cutting step for cutting along the conveying direction.
  • the thin glass cutting method as a step immediately before the cutting step, the thin glass is transported while being deformed and held in an arch shape that curves upward along the longitudinal direction.
  • the method further includes a step.
  • the cutting means irradiates a laser beam on a planned cutting line of the thin glass, and a position downstream of the laser beam irradiation position in the transport direction.
  • the thin glass sheet is cleaved by cooling a portion heated by being irradiated with the laser beam.
  • the thin glass cutting method according to claim 12 of the present invention supports the thin glass at a location apart from the location irradiated with the laser beam and supports the thin glass at the location irradiated with the laser beam.
  • the thin glass sheet is transported and cut without being performed.
  • the thin glass is linearly cut along the longitudinal direction of the thin glass by the cutting means, and adjacent to the cutting portion, A guide member extending along the longitudinal direction of the thin glass is disposed, and the guide member is disposed on one main surface side and the other main surface side of the thin glass with the thin glass interposed therebetween. It is a member.
  • the guide member includes a first guide member provided on a width direction center portion side of the thin glass at the cutting portion, and the cutting portion at the cutting portion. And a second guide member provided on an end portion side in the width direction of the thin glass.
  • the first guide member and the second guide member each have a facing surface facing the main surface of the thin glass, and the second guide member The facing surface is inclined with respect to the facing surface of the first guide member when the thin glass sheet is viewed in cross section in the width direction.
  • the first guide member and the second guide member are spaced apart from each other in the thickness direction of the thin glass as they go downstream in the conveyance direction of the thin glass. It arrange
  • the manufacturing method of the glass article which concerns on Claim 17 of this invention cut disconnects the width direction both ends of the said sheet glass using the cutting method of the sheet glass as described in any one of Claim 9-16. And a step of obtaining a central portion of the thin glass to be a product, and transporting the central portion and the end portion of the thin glass so as to be separated from each other in the thickness direction of the thin glass.
  • the glass article manufacturing method according to claim 18 of the present invention is characterized by comprising a step of obtaining a thin glass substrate by cutting a central portion of the thin glass in the width direction.
  • the manufacturing method of the glass article which concerns on Claim 19 of this invention is equipped with the process of obtaining a glass roll body by winding the center part of the said sheet glass.
  • the glass article manufacturing method according to claim 20 of the present invention is characterized in that the end portion is cut and separated in the width direction of the thin glass, and the separated end portion is pulverized.
  • the thin glass is held in an arch shape along the longitudinal direction, whereby the rigidity against the bending of the thin glass can be improved.
  • the glass surface of the thin glass plate can be made flat. Therefore, on the downstream side of the arch process, for example, by providing a cutting process of the thin glass by laser cleaving or the like, it is possible to stably cut the thin glass without damaging it. Can improve quality.
  • the method for transporting thin glass in claim 2 of the present invention for example, even when the flow rate per unit time of the thin glass gradually changes, or even when meandering occurs in the flowing thin glass. It is possible to prevent breakage of the thin glass.
  • the thin glass conveyance method in claim 3 of the present invention it is possible to support the thin glass with high rigidity by a simple mechanism at both end portions in the width direction. Therefore, it is not necessary to contact the supporting member with the effective surface used as a product, that is, the glass surface in the center in the width direction of the thin glass, and the occurrence of scratches on the effective surface and adhesion of dust etc. can be avoided, and the thin glass Can improve quality. In addition, the cost of the transport facility can be reduced.
  • the method for transporting thin glass according to claim 4 of the present invention by appropriately changing the radius of the arc shape according to the arrangement of the plurality of support members, for example, when the glass surface is put into the transport device By supporting the support member in contact with the whole, the burden on the operator for the operation of loading the thin glass is reduced, while the support member is contacted only on both side edges in the width direction after the completion of the loading. By supporting it in such a way, it is possible to realize an effective support method that conforms to the actual work procedure, such as preventing the occurrence of scratches or the like in the central portion in the width direction.
  • the frictional force applied to the lower surface of the thin glass can be reduced.
  • the thin glass is held in the arch shape along the longitudinal direction and the rigidity against the external force in the width direction is improved in the width direction. Since both end portions of the sheet glass are pressed toward the inside in the width direction, the meandering of the sheet glass can be corrected effectively without causing scratches or defects on the sheet glass.
  • the feeding roller necessary for transporting the thin glass can be provided with the function of correcting the meandering of the thin glass. This is economical because it is not necessary to provide such a device.
  • the rigidity against bending of the thin glass can be improved by holding the thin glass in an arch shape along the longitudinal direction.
  • the thin glass in an arch shape along the longitudinal direction.
  • it becomes the aspect which inclines and supports diagonally below after the vertex of an arch there is little influence of a weight and it is hard to generate
  • the thin glass cutting method according to claim 9 of the present invention bending or wrinkles due to its own weight, as seen when the thin glass is supported in a horizontal state, occurs in the flat portion of the thin glass. This can be prevented, and the quality of the cut portion of the thin glass can be improved.
  • the thin glass is deformed into an arch shape.
  • the glass surface of the thin glass can be made flat on the downstream side of the arch process while suppressing the occurrence of glass bending and wrinkles.
  • a stress distribution band extending in the width direction is formed in the arch portion, so that the extending direction of the cutting line extends to the end portion along the stress distribution. It is induced. Accordingly, it is possible to prevent the cutting failure from being stopped at the arch portion, and to prevent the damage of the cutting failure from spreading upstream from the arch portion.
  • the portion to be cut by the thin glass cutting means is located on the downstream side in the transport direction and cut by being irradiated with a laser beam and heated. Since the point is cooled at a position downstream of the irradiation position of the laser beam in the transport direction, a coolant (for example, water) that cools the cut point is used to cool the cutting point as in the case where the thin glass is supported in a horizontal state. It is possible to prevent problems such as heating failure extending to the irradiated location, and to improve the quality of the cut location by laser cutting of the thin glass.
  • a coolant for example, water
  • the thin glass cutting method of claim 12 of the present invention only the glass is present in the laser irradiation portion from the cutting means, and therefore the location on the opposite side of the thin glass from the laser irradiation side. It is possible to irradiate the thin glass with a necessary output without paying attention to the damage of the members arranged in the plate. In addition, since the temperature of the thin glass heated by the laser is hardly taken away by the support member or the like, the thin glass can be efficiently cut.
  • the thin glass cutting method of claim 13 of the present invention for example, during transportation, it is possible to reduce as much as possible the influence of vibrations applied to the thin glass on the cut portion, and cutting the thin glass.
  • the quality of the location can be improved.
  • the thin glass cutting method of claim 15 of the present invention an appropriate stress is applied to the cut portion of the thin glass to be conveyed by the second guide member, and laser cutting is performed. The progress of cracks can be facilitated.
  • the cutting method of the thin glass in Claim 16 of this invention can prevent that the cutting edge parts after a laser cleaving contact, and can aim at the quality improvement of the cutting
  • the glass surface is bent under the influence of its own weight, which is often seen in a glass article (for example, thin glass) supported in a horizontal state. There is little occurrence of wrinkles and the like, and a thin glass substrate with improved quality of the cut portion can be obtained by cutting such a thin glass into single-sized sheets.
  • the glass surface is bent or wrinkled due to the influence of its own weight, which is often seen in a thin glass supported in a horizontal state.
  • the glass roll body which aimed at the quality improvement of this cutting location can be obtained by cut
  • both end portions cut and discarded from the thin glass are immediately crushed, for example, a temporary storage place of the both end portions is also provided. It is space-saving and economical.
  • FIG.1 First, the whole structure of the conveying apparatus 1 which embodies this invention is demonstrated using FIG.1, FIG.2, FIG.3 and FIG.
  • the vertical direction of FIGS. 1, 2 and 8 is described as the vertical direction of the transfer device 1 or the thin glass 100.
  • 1, 2, 3, and 8 the direction of arrow A is defined as the conveyance direction of the thin glass 100.
  • the conveying device 1 in the present embodiment continuously conveys the thin glass plate 100 having a thickness of, for example, 0.2 mm or less and formed into a long band shape along the longitudinal direction, and the thin glass plate 100 has a thickness dimension of 0.2 mm or less. It is an apparatus for performing a cutting process (more specifically, a cleaving process). As shown in FIG. 1, the transport device 1 is disposed in order along the transport direction of the thin glass 100 (the direction of the arrow A), the descending zone 11, the first catenary zone 12, the first arch zone 13, the first The cutting zone 14, the second catenary zone 15, the second arch zone 16, and the second cutting zone 17 are configured.
  • the descending zone 11 is a zone provided as an introduction path when the thin glass plate 100 is supplied to the transport apparatus 1.
  • a molding device (not shown) based on the overflow / down-draw method is disposed upstream of the lowering zone 11 in the transport direction, that is, upstream and above the transport device 1.
  • the thin glass 100 is drawn vertically downward while being formed into a strip shape by the forming device, and is supplied to the descending zone 11 of the transport device 1.
  • the thin glass 100 may be supplied while being sequentially fed from a roll (not shown) of the thin glass 100 thus formed, and in that case, the product can be divided in the width direction.
  • a thick bead is formed at both side end portions in the width direction (direction perpendicular to the transport direction) of the thin glass plate 100 formed by the overflow down draw method.
  • the thickness of the central portion of the thin glass 100 is as thin as 0.2 mm or less, a straight scribe line (breaking line) is formed in the width direction so as to cross to the beads at both end portions having a large thickness difference. ) Is difficult to form stably.
  • the transport device 1 in the present embodiment the first cutting is performed before the thin glass 100 is cut (cleaved) into sheets of a predetermined size in the second cutting step of the second cutting zone 17.
  • both end portions of the thin glass 100 are cut (cleaved) in advance while improving quality after cutting (cleaving).
  • the first catenary zone 12 is a zone serving as a buffer region of the thin glass 100 supplied to the transport device 1 and passed through the descending zone 11.
  • the thin glass plate 100 is suspended so as to have a catenary shape that curves downward along the transport direction (longitudinal direction). That is, when the thin glass 100 passes through the first catenary zone 12, it is suspended at the upstream end and the downstream end of the first catenary zone 12, and is deformed and held in a catenary shape.
  • the first catenary zone 12 includes a first catenary process in which the thin glass 100 is deformed and held in a catenary shape curved downward along the longitudinal direction as a process immediately before the first arch process described later.
  • the transport speed of the flowing thin glass 100 gradually changes, and the flow rate per unit time of the thin glass 100 changes.
  • the lower end of the catenary shape of the thin glass 100 moves up and down in accordance with the change in the flow rate, so that the action of stress on the thin glass 100 in the middle of conveyance can be suppressed.
  • the influence of the fluctuation of the flow rate per unit time of the thin glass 100 can be absorbed in the first catenary zone 12, and the influence of the fluctuation of the flow quantity reaches the downstream first arch zone 13 and the like which will be described later. Can be prevented.
  • the catenary shape of the thin glass 100 is twisted in the first catenary zone 12, thereby causing the influence of the meandering to It can absorb in the 1st catenary zone 12, and it can prevent that the influence by the said meandering reaches the downstream 1st arch zone 13 grade
  • the first catenary zone 12 is a buffer that cuts off the relationship of the conveyance state such as fluctuations in the flow rate per unit time and meandering between the descending zone 11 on the upstream side and the first arch zone 13 on the downstream side. It is provided as a region.
  • the first arch zone 13 is a zone for correcting only wrinkles generated on the glass surface of the thin glass 100 and transporting only at both end portions without touching the effective surface (surface used later as a product). .
  • the first arch zone 13 is provided with a first holding device 31 to be described later.
  • the thin glass plate 100 is supported from below by the first holding device 31 in the first arch zone 13.
  • the thin glass plate 100 is deformed and held in an arch shape that curves upward along the transport direction (longitudinal direction). That is, the thin glass plate 100 is deformed and held in an arch shape by the first holding device 31 when passing through the first arch zone 13.
  • the first arch zone 13 is deformed and held at a predetermined position on the conveyance path of the thin glass 100 in an arch shape that is curved upward along the longitudinal direction in the conveyance direction of the thin glass 100. It is a zone in which the first arch process is carried out. And by deform
  • the rigidity of the thin glass plate 100 with respect to the bending in the width direction is generally improved, and the rigidity with respect to the bending in the transport direction is also improved as described later. For this reason, generation of new bending and wrinkles on the glass surface of the thin glass plate 100 is suppressed.
  • the thin glass 100 can make the glass surface flat on the downstream side of the first arch zone 13.
  • the rigidity in the width direction of the sheet glass 100 improves remarkably. That is, since the thin glass 100 held in the horizontal state has low rigidity in the width direction, for example, due to its own weight, the thin glass 100 is likely to be bent at the center in the width direction. On the other hand, since the thin glass 100 held in the arch shape has drastically improved rigidity in the width direction, for example, it is difficult for the center portion in the width direction to be bent by its own weight or an external load. In addition, these things are clear from the fact that the cylindrical member or the like is generally more excellent in rigidity with respect to the external force in the axial direction than the plate-like member.
  • the rigidity in the transport direction of the thin glass plate 100 is also dramatically improved. This is considered to be due to the following reason. That is, as shown in FIG. 8A, in a thin glass 100 held in a horizontal state (hereinafter referred to as “thin glass 100X”), for example, when a vertical load W is applied, the thin glass 100X The bending stress m is generated inside and a bending X that curves in the conveying direction occurs. On the other hand, as shown in FIG.
  • a thin glass 100 held in an arch shape (hereinafter referred to as “thin glass 100Y”), for example, when a vertical load W is applied, the thin glass 100Y , A compressive stress p is generated, and the compressive stress p resists the vertical load W, so that the occurrence of bending is reduced. For this reason, the value of the vertical load (withstand load) W that can be held while preventing the occurrence of bending as much as possible is larger in the arch-shaped thin glass 100Y than in the horizontal thin glass 100X. It can be said that the rigidity in the conveyance direction of the thin glass plate 100 is improved by being held in the arch shape.
  • the rigidity in the width direction and the conveyance direction is improved and the load resistance is increased. Even against this, it becomes possible to fully compete.
  • the degree of rigidity of the thin glass plate 100Y in the width direction and the conveyance direction is determined based on the radius of the arch shape.
  • a first feeding device 32 is disposed at the downstream end of the first arch zone 13, and the first feeding device 32 is used to form a thin plate.
  • the thin glass 100 is transported toward the first cutting zone 14 described later while supporting only both side ends of the glass 100 in the width direction.
  • the first feeding devices 32 and 32 are disposed at both side ends of the thin glass plate 100 in the width direction.
  • Each first feeding device 32 is provided with two feeding rollers 32a and 32b.
  • the two feeding rollers 32a and 32b are arranged to face each other so as to sandwich the side end portion in the width direction of the thin glass plate 100.
  • the two feeding rollers 32a and 32b are supported so as to be rotatable about an axis, and a driving mechanism (not shown) is connected to one feeding roller 32a.
  • the feeding roller 32a is rotationally driven by the driving force transmitted from the driving mechanism. As a result, the thin glass plate 100 is fed out in the carrying direction by the two feeding rollers 32a and 32b while supporting the respective side end portions in the width direction, and conveyed to the first cutting zone 14 (see FIG. 1).
  • the thin glass 100 when conveying the thin glass 100, it does not support the whole glass surface of the thin glass 100, but supports only the both ends of the glass surface in the width direction. That is, in this embodiment, while avoiding the effective surface, that is, the glass surface at the center in the width direction, as the location for supporting the thin glass 100, the left and right side ends including the beads that are finally discarded are supported. For this reason, generation of scratches and adhesion of dust on the glass surface can be avoided, and the quality of the thin glass plate 100 can be improved.
  • the first arch zone 13 is provided with a pressing device 35 (see FIG. 3A) for controlling (correcting) the meandering of the thin glass 100 being conveyed.
  • the pressing device 35 is provided with, for example, a plurality (two in this embodiment) of pneumatic cylinders 35a and 35a, and the pneumatic cylinders 35a and 35a are provided with telescopic rods. Abutting rollers 35b and 35b are respectively pivotally supported at the tip portion.
  • each pressing device 35 and 35 are each arrange
  • the pressing device 35 having such a configuration, the thin glass 100 passing through the first arch zone 13 is controlled (corrected) in meandering.
  • the pressing device 35 is disposed with any one side end portion as a reference side. Then, the glass side end face of the reference side is pressed against the cylinder rods of the reference side pneumatic cylinders 35a and 35a by the cylinder rods of the pneumatic cylinders 35a and 35a opposite to the reference side.
  • the meandering of the thin glass plate 100 is controlled (corrected).
  • at least one of the side end surfaces of the thin glass 100 is pressed inward in the width direction of the thin glass 100, thereby controlling the position in the width direction of the thin glass 100.
  • the conveyance direction is corrected.
  • the structure of the press apparatus 35 it is not limited to the thing of this embodiment, For example, if it is a structure which can press the both-sides edge part of the thin glass 100 hold
  • the rigidity in the width direction of the thin glass plate 100 is dramatically improved by being held in the arch shape by the first holding device 31. That is, the thin glass plate 100 held in the arch shape is in a state that is not easily damaged even when an external force in the width direction is applied. Further, the thin glass 100 when passing through the first arch zone 13 is still in a state of being molded by the above-described molding apparatus, and still has beads at both side ends, and usually has no cracks. Even if an external force in the width direction is applied to both end faces of the thin glass 100, the thin glass 100 is hardly damaged by cracks.
  • the first arch zone 13 it is possible to press the both side end surfaces of the thin glass 100 without damaging them, so that the meandering of the thin glass 100 is controlled by pressing the both side end surfaces. And can be corrected. Further, since the first catenary zone 12 (see FIG. 1) is provided on the upstream side of the first arch zone 13, a slight amount is required when correcting the meandering of the thin glass 100 in the first arch zone 13. Even if twisting occurs, the first catenary zone 12 can absorb the influence of the twisting.
  • the first holding device 31 is provided with a plurality of ball casters 37A, 37A,... 37B, 37B, and so on, and these ball casters 37A, 37A,.
  • the bottom surface of the thin glass plate 100 having an arch shape is supported via Thereby, when correcting the meandering of the thin glass plate 100, the frictional force applied to the lower surface of the thin glass plate 100 is reduced, and the pressing force on both side end faces can be reduced.
  • the first cutting zone 14 is a zone for cutting (cutting) both end portions in the width direction including the beads in the thin glass plate 100 along the conveying direction.
  • a laser cleaving device 41 and a guide member 42 which will be described later, are disposed at both side ends of the thin glass 100 in the width direction.
  • the thin glass 100 fed by the first feeding device 32 from the upstream first arch zone 13 is transported obliquely downward while the transport direction is regulated by the guide member 42.
  • the thin glass 100 is laser-cleaved by the laser cleaving device 41 by passing directly under the laser cleaving device 41.
  • the thin glass plate 100 is located at the center in the width direction with the cutting line 100a (see FIG. 5B) formed by the laser cutting device 41 as a boundary, and is an effective surface used as a product later. (Hereinafter referred to as “product part thin glass 100A” as appropriate) and a part including beads that are finally disposed of at both ends in the width direction (hereinafter referred to as “discarding part thin glass 100B” as appropriate). To be described).
  • the divided product part thin glass 100A is provided by the second feeding devices 43 and 43 disposed at the downstream end of the first cutting zone 14 and the both end parts in the width direction of the product part thin glass 100A. It is conveyed to the second catenary zone 15 described later.
  • the divided discarding unit thin glass 100B is forcibly conveyed obliquely downward by, for example, the belt conveyor 44 and the driving roller 45, and then folded by its own weight and discarded as scrap. That is, in the 1st cutting zone 14, the edge part (both edge part of the width direction) of the thin glass 100 is cut
  • discard part thin plate glass 100B you may break after shaping
  • the first cutting zone 14 is inclined at a predetermined position on the conveyance path of the thin glass 100 such that a predetermined position of the thin glass 100 is positioned downward on the downstream side in the conveyance direction of the thin glass 100 (diagonally downward).
  • a zone in which a first cutting step is performed in which a portion that is transported while being held in an inclined posture of the thin glass 100 and is held in an inclined posture is cut along the transport direction by the laser cleaving device 41. is there. That is, in the first cutting zone 14, both ends of the thin glass 100 in the width direction (more specifically, the discarding part thin glass 100 ⁇ / b> B) using a laser cleaving method (cutting method) by a laser cleaving device 41 described later.
  • a first cutting step of obtaining a central portion (more specifically, product portion thin glass 100A) of the thin glass 100 is performed.
  • the thin glass 100 is fed by the first feeding device 32 and then conveyed obliquely downward, and the both ends in the width direction are cleaved by the laser cleaving device 41. It has a configuration.
  • the thin glass 100 is held in a state of extending obliquely downward from the first feeding device 32 immediately before the laser cleaving device 41, the thin glass 100 is hardly affected by its own weight, and a new bend in the glass surface or The generation of wrinkles is suppressed, and the glass surface is maintained in a flat state corrected by the first arch zone 13. Therefore, in the conveying apparatus 1 in this embodiment, since the laser cutting can be performed on the thin glass 100 in which the glass surface is maintained in such a flat state, the quality of the thin glass 100 after the cutting is improved. Can be achieved.
  • the thin glass 100 has a catenary shape and an arch shape.
  • the thin glass 100 by being held continuously, they are respectively curved downward and upward along the transport direction. Therefore, even if a cutting error occurs in the laser cutting by the laser cutting device 41 in the first cutting zone 14, an adverse effect (for example, a crack) of the cutting error is caused by the first catenary zone 12 or the first arch. It is possible to prevent damming in the zone 13 and transmission to the upstream descending zone 11 (see FIG. 1).
  • the conveying posture of the thin glass 100 in the first cutting zone 14 is an inclined posture.
  • the posture is not limited to this, and for example, a vertical posture in which the downstream side in the conveying direction is positioned below may be adopted.
  • the first catenary zone 12 and the first arch zone 13 may not be formed.
  • the 2nd feeding apparatus 43 is comprised substantially the same as the 1st feeding apparatus 32 mentioned above. That is, the second feeding device 43 is provided with two feeding rollers 43a and 43b arranged to face each other, and a driving mechanism (not shown) is connected to one feeding roller 43a.
  • the feeding roller 43a is rotationally driven by the driving force transmitted from the driving mechanism. Thereby, 100 A of product part thin glass is drawn
  • the product part thin glass 100A fed by the second feeding device 43 may be wound immediately without being transported to the second catenary zone 15 to form the roll 100C.
  • a roll (glass roll) is obtained by winding and cutting the central portion (more specifically, the product portion thin glass 100A) of the thin glass with a predetermined length.
  • the zone where the winding and cutting step for obtaining the body 100C is carried out is arranged in the downstream portion of the first cutting zone.
  • the second catenary zone 15 is a zone serving as a buffer region of the product-part thin glass 100 ⁇ / b> A cleaved by the first cutting zone 14 described above.
  • the second catenary zone 15 is configured substantially the same as the first catenary zone 12 described above. That is, as shown in FIG. 1, in the second catenary zone 15, the product part thin glass 100 ⁇ / b> A is suspended so as to have a catenary shape that curves downward along the transport direction (longitudinal direction). That is, when the product part thin glass 100A passes through the second catenary zone 15, the product part thin glass 100A is suspended at the upstream end and the downstream end of the second catenary zone 15, and is deformed and held in a catenary shape. .
  • the second catenary zone 15 is a second catenary that deforms and holds the product-part thin glass 100A into a catenary shape that curves downward along the longitudinal direction as a step immediately before the second arch step described later. This is the zone where the process is performed. Thereby, for example, even if the conveyance of the product part thin glass 100A is stopped by the second cutting step of the second cutting zone 17 located on the downstream side of the second catenary zone 15 or the conveyance speed fluctuates, the catenary shape When the lower end moves up and down, the action of stress on the product-part thin glass 100A during conveyance can be suppressed.
  • the catenary shape of the product-part thin glass 100A is twisted in the second catenary zone 15.
  • the influence of the meandering can be absorbed in the second catenary zone 15.
  • the second catenary zone 15 is a buffer area that cuts off the relationship of the conveyance state such as the variation in the conveyance speed and the meandering between the first cutting zone 14 on the upstream side and the second arch zone 16 on the downstream side. As provided.
  • the 3rd feeding apparatus 51 which consists of a structure equivalent to the 2nd feeding apparatus 43 * 43 mentioned above in the downstream edge part of the 2nd catenary zone 15, and the both ends of the width direction is mentioned. -51 is arranged.
  • the product-part thin glass 100A is fed out in the transport direction by the third feeding devices 51 and 51 while supporting the respective side end portions in the width direction to the second arch zone 16 (see FIG. 1). It is conveyed.
  • the second arch zone 16 is a zone for preventing transmission to the first cutting process such as vibration generated in the second cutting process described later. Moreover, the 2nd arch zone 16 also has a function which ensures the space which provides a 2nd cutting process by raising the product part thin glass 100A.
  • the second arch zone 16 is configured substantially the same as the first arch zone 13 described above. That is, as shown in FIG. 1, the second arch zone 16 is provided with a second holding device 61 having a configuration substantially equivalent to a first holding device 31 described later.
  • the product thin glass plate 100 ⁇ / b> A is supported from below by the second holding device 61 in the second arch zone 16. As a result, the product-part thin glass 100A is deformed and held in an arch shape that curves upward along the transport direction (longitudinal direction). That is, the product thin glass plate 100 ⁇ / b> A is deformed and held in an arch shape by the second holding device 61 when passing through the second arch zone 16.
  • the second arch zone 16 has an arch shape that curves upward in the longitudinal direction at a predetermined position on the conveyance path of the product-part thin glass 100A in the conveyance direction of the product-part thin glass 100A. It is a zone in which a second arch process is performed in which the sheet is conveyed while being deformed and held.
  • the rigidity of the product-part thin glass 100 ⁇ / b> A with respect to the bending in the width direction is generally improved, and as described above, the rigidity with respect to the bending in the transport direction is also improved. Since it improves, generation
  • the product-part thin glass 100 ⁇ / b> A can make the glass surface flat on the downstream side of the second arch zone 16.
  • a fourth feeding device 62 is disposed at the downstream end of the second arch zone 16, and the fourth feeding device 62 provides a product. While avoiding the central part of the glass surface of the partial thin glass 100A, only the both side ends in the width direction are supported, and the product thin glass 100A is conveyed toward the second cutting zone 17 described later. Thereby, generation
  • a fourth structure having the same structure as the second feeding devices 43 and 43 described above.
  • the feeding devices 62 and 62 are provided.
  • the product-part thin glass 100A is fed out in the transport direction by the fourth feeding devices 62 and 62 while supporting the respective side end portions in the width direction, to the second cutting zone 17 (see FIG. 1). It is conveyed.
  • a steering mechanism for controlling (correcting) the meandering of the product-part thin glass 100A to be conveyed is added to the fourth feeding devices 62 and 62, respectively. That is, as shown in FIG. 3B, the rotation shaft of each fourth feeding device 62 is configured to be rotatable in a substantially vertical direction (the width direction of the product thin glass sheet 100A).
  • each fourth feeding device 62 is detected. Is swung horizontally in an appropriate direction by an appropriate angle, and the meandering of the product sheet glass 100A is controlled (corrected).
  • the both ends in the width direction of the product part thin glass 100A are supported, and the fourth feeding devices 62 and 62 for feeding the product part thin glass 100A in the transport direction.
  • the feeding direction of the product part thin glass 100A by the fourth feeding device 62, 62 is changed to a direction inclined with respect to the transport direction according to the position in the width direction of the product part thin glass 100A.
  • the fourth feeding devices 62 and 62 including the steering mechanism are disposed only in the downstream portion of the second arch zone 16, but the present invention is not limited to this. That is, even in the upstream portion of the second arch zone 16, a feeding device having a steering mechanism may be separately provided together with the fourth feeding devices 62 and 62 or in place of the fourth feeding devices 62 and 62. Good.
  • the third feeding devices 51 and 51 positioned on the upstream side of the second arch zone 16 may be provided with a steering mechanism.
  • the second holding device 61 includes a plurality of ball casters 67A, 67A,... 67B, 67B,.
  • the lower surface of the product-part thin glass 100A having an arch shape is supported through the ball casters 67A, 67A, 67B, 67B,.
  • the second cutting zone 17 is a zone for cutting (cutting) the product-part thin glass 100A into sheets of a predetermined size.
  • a cutter cleaving device 71 is disposed upstream of the second cutting zone 17.
  • the cutter cleaving device 71 is a cleaving device using a wheel tool 71A.
  • the cutter cleaving device 71 is moved while pressing the wheel tool 71A to form a scribe line 100b (see FIG. 2) and bends along the scribe line 100b.
  • it is an apparatus which cleaves product part sheet glass 100A.
  • the cutter cutting (cleaving) by the cutter cleaving apparatus 71 is employ
  • the cutter cleaving device 71 includes a wheel tool 71A that is rotatably supported around an axis, and a plurality of holding means 71B, 71B,... That hold the product thin glass 100A.
  • each holding means 71B is configured with a known chucking mechanism, but is not limited thereto, and may be configured with another mechanism such as a suction pad.
  • the wheel tool 71 ⁇ / b> A has the axial direction directed in the vertical direction, the width direction of the product part thin glass 100 ⁇ / b> A, and the product part thin glass 100 ⁇ / b> A.
  • the holding means 71B, 71B,... are arranged on the both sides in the width direction of the product-part thin glass 100A with a predetermined interval in the vertical direction, and the side end portions of the product-part thin glass 100A are arranged. Each is arranged so as to be sandwiched.
  • the product-part thin glass 100A is fed out from the second arch zone 16 described above by the fourth feeding device 62 and is conveyed in the downward direction. And if the conveyance distance of 100 A of product part thin glass reaches
  • the product-part thin glass 100A is sandwiched by the holding means 71B, 71B. Thereafter, a straight scribe line 100b extending in the width direction is formed on the upstream side of the product thin glass plate 100A by the pressing operation of the wheel tool 71A.
  • the holding means 71B, 71B... are in a predetermined direction (for example, in this embodiment, the thickness direction of the product part thin glass 100A) while being synchronized with each other. ) Start moving slightly. Thereby, the product-part thin glass 100A is bent along the scribe line 100b and is cut (cleaved) into sheets of a predetermined size.
  • the fourth feeding device 62 is driven again, and the conveyance and cutting (cleaving) of the product part thin glass 100A are repeated.
  • the second cutting zone 17 is a first cutting section for cutting (cutting) the product-part thin glass 100A into sheets of a predetermined size by the cutter cutting device 71 at the most downstream position on the conveyance path of the thin glass 100.
  • This is the zone where the two cutting steps are performed. That is, in the 2nd cutting zone 17, the center part (more specifically, product part thin glass 100A) of the thin glass 100 is cut
  • the product-part thin glass 100 ⁇ / b> A is transported in the downward direction while being fed by the fourth feeding device 62, and is then held in a vertical state. It is configured to be cut (cleaved) into leaves.
  • the product-part thin glass 100A is not easily affected by its own weight, and the glass surface hardly has new wrinkles or the like, and has been cleaned by the second arch zone 16 (see FIG. 1).
  • the glass surface is maintained in a state. Therefore, in the conveying apparatus 1 according to the present embodiment, the product part thin glass 100A whose glass surface is maintained in such a clean state can be cleaved by scribing. 100 quality can be improved.
  • the fourth feeding device 62 is stopped and the product part thin glass 100A is cut (cleaved)
  • the slack of the product part thin glass 100A in the second arch zone 16 is generated.
  • the third feeding device 51 is also stopped.
  • the second feeding device 43 is still in a driving state, and the product-part thin glass 100A is continuously fed out from the first cutting zone 14.
  • the product part thin glass 100A that is newly fed out from the first cutting zone 14, Since it can be absorbed in the second catenary zone 15, the effects of stopping the third feeding device 51 and the fourth feeding device 62 are affected by the upstream zones 11, 12, including the first cutting zone 14. 13 can be prevented.
  • the operation in the upstream zones 11, 12, 13, 14 is stopped by temporarily holding the product-part thin glass 100 ⁇ / b> A fed out from the first cutting zone 14.
  • the product-part thin glass 100A can be stopped and cut (cleaved) into sheets of a predetermined size.
  • the product part thin glass 100A has a catenary shape and By being continuously held in the arch shape, it is curved downward and upward, respectively, along the transport direction. Therefore, even if vibration occurs in the second cutting zone 17 due to cutting (cleaving) by the cutter cleaving device 71, the adverse effect (for example, resonance) of the vibration is reduced by the second catenary zone 15 or the second arch zone. Therefore, it is possible to prevent transmission to the upstream first cutting zone 14 (see FIG. 1).
  • FIGS. 4B and 4C the vertical direction of the first holding device 31 for convenience.
  • the direction of the arrow A is defined as the conveyance direction of the thin glass plate 100.
  • the first holding device 31 is provided in the first arch zone 13, and supports the lower surface of the thin glass 100 when the thin glass 100 in the middle of conveyance passes through the first arch zone 13. It is an apparatus for temporarily changing and holding 100 conveyance shapes into an arch shape. As shown in FIG. 4A, the first holding device 31 is mainly composed of a side end support mechanism 31A, a center support mechanism 31B, and the like.
  • the side end support mechanism 31A is for supporting both side ends in the width direction on the lower surface of the thin glass 100 when the thin glass 100 in the middle of conveyance is changed and held in an arch shape.
  • the side end support mechanism 31A includes a plurality of (for example, two in the present embodiment) base plates 36A and 36A.
  • Each of the base plates 36A is formed of a rectangular plate member made of an elastic material. Further, on the upper surface of the base plate 36A, a plurality of ball casters 37A, 37A, etc. as support members, which are in direct contact with the lower surface of the thin glass plate 100, are arranged at predetermined intervals along the longitudinal direction of the base plate 36A. Is disposed.
  • the two base plates 36 ⁇ / b> A and 36 ⁇ / b> A having such a configuration are curved so as to be convex upward, and the width direction of the thin glass 100 depends on the posture of the longitudinal direction along the conveying direction of the thin glass 100. Arranged at both ends. At this time, the respective base plates 36A and 36A are arranged in parallel in the width direction of the thin glass plate 100 so as to be parallel to each other.
  • the first guide blocks 33A and 33A are fixed to the lower surfaces of both end portions in the longitudinal direction of each base plate 36A. Further, below these first guide blocks 33A and 33A, the two first guide rails 34A and 34A are thin glass 100 so that their longitudinal directions are parallel to each other with the longitudinal direction thereof being in the width direction of thin glass 100. Are spaced apart in the transport direction. Further, the first guide blocks 33A and 33A are attached to the corresponding first guide rails 34A and 34A so as to be slidable in the width direction of the thin glass plate 100, respectively.
  • the two base plates 36A, 36A are moved in the width direction of the thin glass 100, respectively. Is possible.
  • each base plate 36A. -36A can be moved in the width direction and placed at an appropriate position.
  • second guide blocks 38A and 38A are respectively fixed to the lower surfaces of the first guide rails 34A at both ends in the longitudinal direction. Further, below these second guide blocks 38A and 38A, the two second guide rails 39A and 39A are arranged so that the longitudinal directions thereof are parallel to each other with the longitudinal direction thereof being directed to the conveying direction of the thin glass 100. Are spaced apart in the width direction.
  • the two first guide rails 34A, 34A can slide on the second guide rails 39A, 39A in the conveying direction of the thin glass 100 via the second guide blocks 38A, 38A. It has become.
  • the two first guide rails 34 ⁇ / b> A and 34 ⁇ / b> A are configured to be close to and away from each other along the conveyance direction of the thin glass plate 100. Therefore, both end portions in the longitudinal direction of the respective base plates 36A connected to the first guide rails 34A and 34A via the first guide blocks 33A and 33A are mutually connected along the conveying direction of the thin glass 100. It is configured to be able to approach and separate.
  • the two first guide rails 34A and 34A are moved in the proximity direction, so that both end portions in the longitudinal direction of each base plate 36A are moved in the proximity direction.
  • the degree of curvature of the virtual surface S1 that simultaneously includes the apexes of the plurality of ball casters 37A, 37A in each arch-shaped base plate 36A that is curved upward, the degree of curvature of the virtual surface S1 that simultaneously includes the apexes of the plurality of ball casters 37A, 37A,.
  • both ends in the longitudinal direction of each base plate 36A are moved in the separating direction.
  • each arch-shaped base plate 36A that is curved upward and convex the degree of curvature of the virtual surface S1 that simultaneously includes the apexes of the plurality of ball casters 37A, 37A,. That is, when the positions of the two first guide rails 34A and 34A are close to each other, the dimension of the bending radius of the virtual surface S1 (the dimension R1 in FIG. 4B) is obtained via each base plate 36A. It can be changed freely. The change of the radius R1 of the bending radius can be easily realized by deforming the base plate by a driving mechanism such as a servo motor.
  • the side end support mechanism 31A includes a plurality of base plates 36A, 36A, ball casters 37A, 37A,... Is provided.
  • the support mechanism portion is disposed in a convex arc shape (that is, an arch shape) upward along the conveyance direction of the thin glass 100, and both end portions in the width direction on the lower surface of the thin glass 100.
  • a support member composed of a plurality of ball casters 37A, 37A, and the like, and an arrangement variable mechanism capable of changing the radial position of the arch shape by changing the arrangement position of the support member
  • the arrangement changing mechanism can change the shape and position of the plurality of base plates 36A and 36A, the base plates 36A and 36A, the first guide blocks 33A and 33A, the first guide rails 34A and 34A, Two guide blocks 38A, 38A ..., second guide rails 39A, 39A, and the like.
  • the center support mechanism 31B is configured substantially the same as the side end support mechanism 31A described above, but differs from the side end support mechanism 31A in the arrangement positions of the base plates 36B, 36B, and 36B. Therefore, in the following description, differences from the side end support mechanism 31A are mainly described, and descriptions of portions having the same configuration as the side end support mechanism 31A are omitted.
  • the center support mechanism 31B supports the central portion in the width direction on the lower surface of the thin glass 100 when changing and holding the thin glass 100 in the middle of the arch shape. Is.
  • the center support mechanism 31B is provided with a plurality of (for example, three in the present embodiment) base plates 36B, 36B, and 36B.
  • a supporting member which are in direct contact with the lower surface of the thin glass plate 100, have a predetermined interval along the longitudinal direction of the base plate 36B. Arranged.
  • These base plates 36B, 36B, and 36B are convex upward in the gap between the two base plates 36A and 36A (the central portion in the width direction of the thin glass 100) provided in the side end support mechanism 31A. And the longitudinal direction is arranged in a posture along the conveyance direction of the thin glass plate 100. At this time, the base plates 36B, 36B, and 36B are juxtaposed in the width direction of the thin glass plate 100 so as to be parallel to each other.
  • the three base plates 36B, 36B, 36B arranged at such positions slide and move the first guide rails 34B, 34B via the first guide blocks 33B, 33B,.
  • Each of the glass 100 is movable in the width direction.
  • the base plates 36B, 36B, 36B It is possible to move it in the direction and arrange it at an appropriate position.
  • the two first guide rails 34B and 34B are configured to be slidable on the second guide rails 39B and 39B via the second guide blocks 38B, 38B.
  • the two first guide rails 34 ⁇ / b> B and 34 ⁇ / b> B are configured to be close to and away from each other along the conveyance direction of the thin glass plate 100. Therefore, both ends in the longitudinal direction of the base plates 36B connected to the first guide rails 34B and 34B and the first guide blocks 33B and 33B are mutually connected along the conveyance direction of the thin glass 100. It is configured to be able to approach and separate.
  • the two first guide rails 34B and 34B are moved in the proximity direction, so that both end portions in the longitudinal direction of each base plate 36B are moved in the proximity direction.
  • the degree of curvature of the virtual surface S2 including the vertices of the plurality of ball casters 37B, 37B in each of the arch-shaped base plates 36B that are convexly curved upward, the degree of curvature of the virtual surface S2 including the vertices of the plurality of ball casters 37B, 37B,.
  • both ends in the longitudinal direction of each base plate 36B are moved in the separating direction.
  • each arch-shaped base plate 36B that is convexly curved upward the degree of curvature of the virtual surface S2 that simultaneously includes the apexes of the plurality of ball casters 37B, 37B,. That is, when the positions of the two first guide rails 34 and 34B are separated from each other, the dimension of the bending radius of the virtual surface S2 (dimension R2 in FIG. 4B) is obtained via each base plate 36B. It can be changed freely. The change of the radius R2 of the bending radius can be easily realized by deforming the base plate by a drive mechanism such as a servo motor.
  • the central support mechanism 31B includes a plurality of base plates 36B, 36B, 36B, ball casters 37B, 37B,... Is provided.
  • the support mechanism portion is arranged in a convex arc shape (that is, an arch shape) upward along the conveyance direction of the thin glass 100, and the width direction central portion of the lower surface of the thin glass 100, A support member composed of a plurality of ball casters 37B, 37B,... That contact, and an arrangement variable mechanism that can change the radial dimension of the arch shape by changing the arrangement position of the support member.
  • the change mechanism can change the shape and position of the plurality of base plates 36B, 36B, and 36B, and the base plates 36B, 36B, and 36B, the first guide blocks 33B, 33B, and the first guide rails 34B and 34B. And second guide blocks 38B, 38B... And second guide rails 39B and 39B.
  • the first holding device 31 includes the side end support mechanism 31A, the center support mechanism 31B, and the like that can operate independently of each other. Therefore, in the first holding device 31, the virtual surface S1 formed by the plurality of ball casters 37A, 37A,... Of the side end support mechanism 31A that holds both side ends of the thin glass 100 in the width direction.
  • the radius R1 of the imaginary surface S2 formed by the plurality of ball casters 37B, 37B,... Of the central support mechanism 31B, which holds the radius R1 of the curvature radius and the central portion of the glass surface of the thin glass 100. Can be changed independently of each other.
  • the radius R1 of the virtual surface S1 and the radius R2 of the virtual surface S2 are adjusted to be equal to each other.
  • the thin glass 100 is supported by both the side end support mechanism 31A and the center support mechanism 31B over the entire glass surface. Thereby, in the loading operation
  • the radius R2 of the imaginary surface S2 is adjusted to be larger than the radius R1 of the imaginary surface S1 (R1 ⁇ R2), and the thin glass 100 has both sides in the width direction of the glass surface. Only at the end, it is supported by the side end support mechanism 31A. Thereby, it can prevent that a crack etc. generate
  • At least the thin glass 100 in the middle of conveyance is arch-shaped through only the width direction both-sides edge part of a glass surface. Any configuration is possible as long as it can be deformed and retained. That is, as the configuration of the first holding device 31, it is sufficient that at least the side end support mechanism 31A is provided.
  • the bending of each virtual plane S1, S2 is performed by the above-described variable arrangement mechanism.
  • it is set as the structure which changes the dimensions R1 and R2 of a radius, it is not limited to this. That is, for example, by forming a base plate with an inelastic member and moving the base plate downward, the side end support mechanism 31A and the center support mechanism are retracted from the thin glass 100. It is good also as comprising 31B.
  • the second holding device 61 provided to temporarily hold the product-part thin glass 100A in the middle of conveyance in the second arch zone 16 in an arch shape is substantially equivalent to the first holding device 31.
  • it differs from the 1st holding
  • the number of the base plates 66B and 66B provided in the central support mechanism 61B is set to two so that the central portion The structure of the support mechanism 61B is made compact in the width direction.
  • a virtual surface S3 formed by a plurality of ball casters 67A, 67A... Of the side end support mechanism 61A that holds both side ends of the thin glass 100 in the width direction.
  • a virtual surface S4 (not shown) formed by a plurality of ball casters 67B, 67B,... Of the center support mechanism 61B, which holds the radius R3 of the curvature radius and the center of the glass surface of the thin glass 100.
  • the radius R4 of the radius of curvature (not shown) can be changed independently of each other.
  • the radius R3 of the virtual surface S3 and the radius R4 of the virtual surface S4 are adjusted to be equal to each other.
  • the thin glass 100 is supported by both the side end support mechanism 61A and the center support mechanism 61B over the entire glass surface. Thereby, in the loading operation
  • the radius R4 of the imaginary surface S4 has a curvature radius R4.
  • the sheet glass 100 is adjusted so as to have a larger value than the radius R3 of the imaginary surface S3 (R3 ⁇ R4), and the thin glass plate 100 has a side end support mechanism only at both ends in the width direction of the glass surface. It is supported by the body 61A. Thereby, it can prevent that a crack etc. generate
  • the vertical direction in FIG. 5A is described as the vertical direction of the transport apparatus 1 including the laser cleaving device 41.
  • the direction of arrow A is defined as the conveyance direction of the thin glass 100.
  • the laser cleaving device 41 is a cleaving device using a laser beam, and immediately after generating a thermal stress by irradiation with a laser beam, a portion where the thermal stress is generated is rapidly cooled to generate a crack, thereby producing a thin glass plate. It is a device that cleaves 100.
  • the laser cleaving device 41 is provided with a laser beam irradiation means (not shown), and a planned cutting line (more specifically, a cleaving line 100a later) of the thin glass 100 being conveyed.
  • the laser beam L is continuously irradiated by the laser beam irradiation means so that the corresponding portion of the thin glass plate 100 has a desired temperature on the line (see FIG. 5B).
  • the beam traces C, C... By the laser beam L are linearly formed along the conveying direction of the thin glass 100 at the side ends in the width direction of the thin glass 100. A plurality are formed.
  • the surface of the thin glass 100 tries to expand by being locally heated to the extent that it does not melt or break due to the formation of the beam mark C, but the expansion is caused by the unheated area around the beam mark C. Is bound.
  • a strong compressive stress q acts on the beam irradiation part on the surface of the thin glass plate 100.
  • the amount of heat applied to the surface of the thin glass 100 through the beam mark C is gradually conducted to the width direction of the thin glass 100 and to the inside with the passage of time.
  • the laser cleaving device 41 is provided with a refrigerant irradiation means (not shown), and the refrigerant R made of water or the like is irradiated with the laser beam L by the refrigerant irradiation means.
  • the refrigerant R made of water or the like is irradiated with the laser beam L by the refrigerant irradiation means.
  • a tensile stress t acts on the surface of the thin glass plate 100.
  • the tensile stress t acting on the surface of the thin glass 100 becomes stronger.
  • the crack k proceeds beyond the fracture toughness value of the thin glass 100. It is considered that the crack k becomes a breaking line 100a (see FIG. 2) and divides the thin glass plate 100.
  • the laser cleaving device 41 as a cutting means disposed in the first cutting zone 14 (see FIG. 1) irradiates the laser beam L on the planned cutting line of the thin glass plate 100 and the laser beam L.
  • the sheet glass 100 is cleaved by cooling the portion irradiated with the laser beam L and heated at a position downstream of the irradiation position in the conveying direction.
  • the holding member made of, for example, a metal having excellent thermal conductivity
  • the back surface of the thin glass 100 (the surface facing the laser cleaving device 41 side) is held. Most of the heat generated by the laser beam L passes through the thin glass 100 and is absorbed by the holding member. Therefore, it is difficult to form a necessary temperature gradient in the thin glass 100, and it is difficult to perform sufficient laser cleaving on the thin glass 100.
  • the first feeding devices 32 and 32 are configured to support only both side ends in the width direction of the thin glass plate 100. In other words, it is possible to hold the thin glass 100 without providing a contact object at least around the laser irradiation position by the laser cleaving device 41, and to support the thin glass 100 at a place where the laser beam L is irradiated.
  • the sheet glass 100 can be stably conveyed and cut.
  • the laser beam has a sufficiently high output without worrying about damage in the vicinity of the back surface of the thin glass 100. L can be irradiated.
  • the thin glass 100 to be cleaved is as described above. Since it is held in an obliquely extended state, it is unlikely that the refrigerant R will suddenly reach the beam mark C, as in the case of being held in a horizontal state, thereby preventing a heating failure at the location where the laser beam L is irradiated. can do.
  • FIG.1 the vertical direction in FIGS. 6 and 7 is described as the vertical direction of the transport apparatus 1 including the guide member 42.
  • the direction of the arrow A is defined as the conveyance direction of the thin glass plate 100.
  • the guide member 42 maintains the posture of the thin glass 100 when the thin glass 100 is cleaved by the laser cleaving device 41, and suppresses vibrations generated in the thin glass 100 as much as possible, so that a high-quality cut surface (break This is a member for securing a cross section.
  • the thin glass 100 when passing through the first cutting zone 14 includes, for example, the first feeding device 32 (or the second feeding device 43) and the upstream of the first cutting zone 14. Due to the influence of the first arch process or the second catenary process performed on the side (more specifically, the first arch zone 13) or the downstream side (more specifically, the second catenary zone 15), respectively, Vibration may occur. Therefore, if such vibration can be surely suppressed, the laser cutting device 41 can perform laser cutting on the thin glass plate 100 while ensuring a high-quality cutting surface (breaking cross section) in the first cutting zone 14. It becomes possible.
  • each cutting process (the first cutting process and the second cutting process) performed by the transport device 1 in the present embodiment is a rough cutting process for cutting into a predetermined product size in a further subsequent process.
  • a region where other members such as a support member can arbitrarily come into contact more specifically, in the vicinity of the breaking line 100a and both end portions including the bead).
  • the thin glass 100 in the first cutting zone 14 is held in a state of extending obliquely downward, the thin glass 100 of, for example, a case where the thin glass 100 is held in a horizontal state is used. There is no need to support the entire glass surface, and the thin glass sheet is reliably held by the guide member 42 using the above-described region where other members can be arbitrarily contacted.
  • the laser cleaving device 41 can perform laser cleaving on the thin glass plate 100.
  • the guide member 42 is formed of, for example, a rectangular plate member. It is desirable that the guide member 42 be formed using a material whose surface in contact with the thin glass 100 is smooth and which does not easily damage the thin glass 100.
  • a plurality of (four in the present embodiment) guide members 42, 42, 42, and 42 are provided along the conveying direction of the thin glass 100 at each side end in the width direction of the thin glass 100. It is disposed in the vicinity of the downstream side of the first feeding device 32 while extending obliquely downward. Further, the driven shaft 44a of the belt conveyor 44 described above (see FIG. 5A) is provided on the back side (lower surface side) of each side end portion of the thin glass 100 and in the vicinity of the downstream side of the first feeding device 32. In consideration of the generation of stress on the beads, the back side of the side end portion is supported by a wide area as much as possible via the conveyance side belt of the belt conveyor 44.
  • these guide members 42, 42, 42, 42 are provided as a set of two, and the two guide members 42, 42 in each set are mutually connected while sandwiching the thin glass 100 therebetween. It arrange
  • one set of guide members 42 and 42 (hereinafter referred to as “inner guide members 42A and 42A” as appropriate) is disposed inside the breaking line 100a in the width direction of the thin glass 100, The glass 100 (more specifically, the product-part thin glass 100A) is disposed so as to oppose each other in the vertical direction.
  • outer guide members 42B and 42B are disposed outside the breaking line 100a in the width direction of the thin glass 100, and the thin glass 100
  • An outer guide member 42B located below the belt-side conveyor belt 44 is disposed below the belt-side conveyor belt 44, and sandwiches the sheet glass 100 (more specifically, the discarding section sheet glass 100B) and the carrier-side belt at the same time. However, they are arranged to face each other in the vertical direction.
  • the inner guide member 42A and the outer guide member 42B have a cleaving line 100a therebetween. While being sandwiched, they are arranged parallel to each other and along the breaking line 100a.
  • the width a of each of the inner guide member 42A and the outer guide member 42B is about 15 [mm]
  • the separation dimension b between the inner guide member 42A and the outer guide member 42B is the laser beam L and the refrigerant R.
  • the width is set to about 5 [mm] (total 10 [mm]) in the width direction of the thin glass plate 100 around the breaking line 100a.
  • the inner guide member 42A and the outer guide member 42B are parallel to each other with the cleaving line 100a interposed therebetween. And it is arrange
  • the inner guide members 42A and 42A are arranged to face each other with the thin glass 100 sandwiched between the gaps, and in the width direction of the thin glass 100.
  • the outer guide members 42B and 42B are arranged to face each other with the sheet glass 100 and the conveyor belt of the belt conveyor 44 sandwiched between the gaps.
  • the dimension of the gap is set to about 0.4 [mm] with respect to the thin glass plate 100 having a thickness dimension of 0.1 [mm], for example.
  • positioning structure of several guide member 42 * 42 ... in this embodiment one set of 2 located in the center part side (inner side) of the width direction of the sheet glass 100 with respect to the breaking line 100a.
  • the inner guide members 42A and 42A and a pair of outer guide members 42B and 42B positioned on the side end side (outer side) in the width direction are configured.
  • the posture of the thin glass plate 100 can be stabilized. It is not limited to this.
  • the thin glass 100 is straight along the conveyance direction (longitudinal direction) of this thin glass 100 by the laser cleaving apparatus (cutting means) 41.
  • FIG. I s cut into a shape to form a breaking line 100a, at least in the width direction central portion side of the thin glass 100 in the breaking line (cutting place) 100a, adjacent to the breaking line (cutting place) 100a, the thin plate Inner guide members (first guide members) 42A and 42A extending along the conveyance direction (longitudinal direction) of the glass 100 are arranged.
  • first guide members 42A and 42A sandwich the thin glass 100 on one side (for example, the front side) and the other side (for example, the back side) in the thickness direction of the thin glass 100. It is comprised as a pair of guide member arrange
  • the conveyance direction of the said thin glass 100 is adjoined to this breaking line (cutting part) 100a in the width direction side edge part side of the thin glass 100 in the breaking line (cutting part) 100a.
  • Outer guide members (second guide members) 42B and 42B extending along the (longitudinal direction) are arranged.
  • these outer side guide members (2nd guide member) 42B * 42B are the said thin glass 100 and belt on the one side (for example, surface side) and the other side (for example, back side) in the thickness direction of the thin glass 100. It is comprised as a pair of guide member arrange
  • the first cutting zone 14 is formed. It has been confirmed that the vibration of the thin glass 100 when passing can be suppressed as much as possible.
  • the two pairs of outer guide members 42 ⁇ / b> B and 42 ⁇ / b> B described above are slightly inclined with respect to the thin glass plate 100. It is good also as a structure arrange
  • the pair of inner guide members 42A and 42A described above are arranged in parallel to the thin glass plate 100, and the pair of outer guide members 42B and 42B are formed of the thin glass plate 100.
  • the lower surface thereof is disposed so as to incline in the direction toward the central portion side in the width direction of the thin glass plate 100.
  • the inner guide members (first guide members) 42A and 42A and the outer guide members (second guide members) 42B and 42B, each of which is a set of two sheets, are the main surfaces (more specifically, When the opposing surfaces of the outer guide members (second guide members) 42B and 42B are a cross-sectional view of the thin glass 100 in the width direction, the opposing surfaces of the thin glass 100 are opposed to each other. It is the structure which inclines with respect to the opposing surface of inner side guide member (1st guide member) 42A * 42A.
  • the thin glass 100 disposed between the outer guide members (second guide members) 42 ⁇ / b> B and 42 ⁇ / b> B when the thin glass 100 passes through the portion of the guide member 42. Is bent with respect to the thin glass plate 100 disposed between the inner guide members (first guide members) 42A and 42A, and has an appropriate stress on the breaking line 100a of the thin glass plate 100 (see FIG. 5B). This makes it possible to stabilize the laser cleaving by the laser cleaving device 41.
  • the initial crack is formed by a processing means such as a diamond cutter, for example.
  • a processing means such as a diamond cutter, for example.
  • the two outer guide members 42B and 42B are disposed so as to be inclined with respect to the inner guide members 42A and 42A, and appropriate on the breaking line 100a of the thin glass plate 100. Stress is always generated. Thereby, even if it is in the middle part of the thin glass 100, if it is on the breaking line 100a, a crack can be easily propagated stably along a bending part from an initial crack, and a laser is applied to the thin glass 100. The work efficiency at the time of cleaving can be improved.
  • the bending dimension (dimension h in FIG. 6) in the width direction of each outer guide member 42B is set to about 0.1 to 0.3 [mm], so that the laser cleaving device is set. It has been confirmed that the laser cleaving by 41 is reliably executed.
  • the two outer guide members 42 ⁇ / b> B and 42 ⁇ / b> B are moved toward the downstream side in the conveyance direction of the thin glass 100.
  • the inner guide members 42A and 42A may be arranged so as to be gradually separated from the glass separation point (starting point of separation of the product part thin glass 100A and the discard part thin glass 100B) in the vertical direction. Good.
  • each set of two inner guide members (first guide members) 42A and 42A and outer guide members (second guide members) 42B and 42B are moved toward the downstream side in the conveyance direction of the thin glass plate 100, It arrange
  • FIG. In other words, in the first cutting zone 14, the central portion (more specifically, the product portion thin glass 100A) and the end portion (more specifically, the discarding portion thin glass 100B) of the thin glass 100,
  • the plurality of guide members 42, 42, 42, 42 are transported so as to be separated from each other in the thickness direction of the thin glass plate 100.
  • an endless member such as a belt may be used for all guides as an alternative to the guide member 42. In this case, it is possible to sandwich the thin glass 100 without a gap.
  • the thin glass conveying method, conveying device, cutting method, and glass article manufacturing method of the present invention are, for example, used in flat panel displays, smartphones, etc. It can be used as a technique for cutting (cleaving) while transporting.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Thermal Sciences (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

Lors de la coupe (fracturation) de verre à vitres mince, formé sous forme d'un ruban allongé, pendant le transport de celui-ci dans la direction longitudinale correspondante, l'invention concerne un procédé et un dispositif pour transporter du verre à vitres mince qui sont capables de couper (fracturer) de manière stable le verre à vitres mince et qui sont capables de réaliser une augmentation de la qualité du verre à vitres mince post-coupe (fracturation), un procédé pour couper du verre à vitres mince qui permet de réaliser une augmentation de la qualité du site de coupe (fracturation) et un procédé pour produire un objet en verre contenant le verre à vitres mince. La présente invention fait appel à une étape de cintrage qui est effectuée en une première zone de cintrage (13) (ou une deuxième zone de cintrage (16)) et, en une position prédéterminée sur la voie de transport du verre à vitres mince (100), une section à mi-chemin le long du verre à vitres mince (100) dans la direction de transport étant transportée tout en étant maintenue et déformée en forme d'arc s'incurvant vers le haut le long de la direction longitudinale.
PCT/JP2014/069873 2013-08-28 2014-07-29 Procédé pour transporter du verre à vitres mince, dispositif de transport, procédé de coupe et procédé de production d'un objet en verre Ceased WO2015029669A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2013-176870 2013-08-28
JP2013176869A JP6056710B2 (ja) 2013-08-28 2013-08-28 薄板ガラスの搬送方法および搬送装置
JP2013176870A JP6056711B2 (ja) 2013-08-28 2013-08-28 薄板ガラスの切断方法、およびガラス物品の製造方法
JP2013-176869 2013-08-28

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WO2016187171A1 (fr) * 2015-05-18 2016-11-24 Corning Incorporated Procédés et systèmes de traitement de ruban de verre
WO2016187173A1 (fr) * 2015-05-18 2016-11-24 Corning Incorporated Commande de tension dans des appareils de fabrication de verre
WO2016187172A1 (fr) * 2015-05-18 2016-11-24 Corning Incorporated Usinage continu de ruban de verre souple à contrainte mécanique réduite
WO2016187190A1 (fr) * 2015-05-18 2016-11-24 Corning Incorporated Traitement en continu d'un ruban de verre flexible avec isolement et stabilisation du ruban
WO2017120407A1 (fr) * 2016-01-07 2017-07-13 Corning Incorporated Procédé et appareil pour le traitement continu d'un ruban de verre souple
JP2021501114A (ja) * 2017-10-30 2021-01-14 コーニング インコーポレイテッド 薄いガラスリボンの処理システムおよび方法
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WO2022202234A1 (fr) * 2021-03-26 2022-09-29 日本電気硝子株式会社 Procédé de fabrication de film de verre et dispositif de fabrication associé
JP2023550656A (ja) * 2020-11-24 2023-12-04 コーニング インコーポレイテッド ガラスリボンを製造する方法及び装置
US20240025791A1 (en) * 2017-10-30 2024-01-25 Corning Incorporated Systems and methods for processing thin glass ribbons

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CN106660849A (zh) * 2014-07-08 2017-05-10 康宁股份有限公司 柔性玻璃带的连续加工
CN106660849B (zh) * 2014-07-08 2021-10-15 康宁股份有限公司 柔性玻璃带的连续加工
US10570047B2 (en) * 2014-07-08 2020-02-25 Corning Incorporated Continuous processing of flexible glass ribbon
WO2016007448A1 (fr) * 2014-07-08 2016-01-14 Corning Incorporated Traitement continu de ruban de verre souple
US20170197864A1 (en) * 2014-07-08 2017-07-13 Corning Incorporate Continuous processing of flexible glass ribbon
JP2018522800A (ja) * 2015-05-18 2018-08-16 コーニング インコーポレイテッド ガラスリボンを処理する方法及びシステム
US10800696B2 (en) 2015-05-18 2020-10-13 Corning Incorporated Methods and systems for processing of glass ribbon
WO2016187190A1 (fr) * 2015-05-18 2016-11-24 Corning Incorporated Traitement en continu d'un ruban de verre flexible avec isolement et stabilisation du ruban
CN107635932A (zh) * 2015-05-18 2018-01-26 康宁股份有限公司 用于加工玻璃带的方法和系统
CN107635930A (zh) * 2015-05-18 2018-01-26 康宁股份有限公司 使机械应力降低来连续处理挠性玻璃带
CN107667075A (zh) * 2015-05-18 2018-02-06 康宁股份有限公司 使带隔离和稳定来连续处理挠性玻璃带
JP2018522802A (ja) * 2015-05-18 2018-08-16 コーニング インコーポレイテッド ガラス製造装置における張力制御
WO2016187172A1 (fr) * 2015-05-18 2016-11-24 Corning Incorporated Usinage continu de ruban de verre souple à contrainte mécanique réduite
TWI682907B (zh) * 2015-05-18 2020-01-21 美商康寧公司 具有減少的機械應力的可撓式玻璃帶的連續製程
WO2016187173A1 (fr) * 2015-05-18 2016-11-24 Corning Incorporated Commande de tension dans des appareils de fabrication de verre
CN107667075B (zh) * 2015-05-18 2020-08-21 康宁股份有限公司 使带隔离和稳定来连续处理挠性玻璃带
WO2016187171A1 (fr) * 2015-05-18 2016-11-24 Corning Incorporated Procédés et systèmes de traitement de ruban de verre
WO2017120407A1 (fr) * 2016-01-07 2017-07-13 Corning Incorporated Procédé et appareil pour le traitement continu d'un ruban de verre souple
JP2021501114A (ja) * 2017-10-30 2021-01-14 コーニング インコーポレイテッド 薄いガラスリボンの処理システムおよび方法
JP7265553B2 (ja) 2017-10-30 2023-04-26 コーニング インコーポレイテッド 薄いガラスリボンの処理システムおよび方法
US11802069B2 (en) 2017-10-30 2023-10-31 Corning Incorporated Systems and methods for processing thin glass ribbons
US20240025791A1 (en) * 2017-10-30 2024-01-25 Corning Incorporated Systems and methods for processing thin glass ribbons
CN114650971A (zh) * 2020-01-20 2022-06-21 日本电气硝子株式会社 玻璃膜的制造方法
JP2023550656A (ja) * 2020-11-24 2023-12-04 コーニング インコーポレイテッド ガラスリボンを製造する方法及び装置
US20240002272A1 (en) * 2020-11-24 2024-01-04 Corning Incorporated Methods and apparatus for manufacturing a glass ribbon
US12441647B2 (en) * 2020-11-24 2025-10-14 Corning Incorporated Methods and apparatus for manufacturing a glass ribbon
WO2022202234A1 (fr) * 2021-03-26 2022-09-29 日本電気硝子株式会社 Procédé de fabrication de film de verre et dispositif de fabrication associé

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