WO2019244654A1 - Glass roll manufacturing method - Google Patents

Glass roll manufacturing method Download PDF

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Publication number
WO2019244654A1
WO2019244654A1 PCT/JP2019/022529 JP2019022529W WO2019244654A1 WO 2019244654 A1 WO2019244654 A1 WO 2019244654A1 JP 2019022529 W JP2019022529 W JP 2019022529W WO 2019244654 A1 WO2019244654 A1 WO 2019244654A1
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WO
WIPO (PCT)
Prior art keywords
glass ribbon
glass
slack
transport
conveyance
Prior art date
Application number
PCT/JP2019/022529
Other languages
French (fr)
Japanese (ja)
Inventor
森　弘樹
洋平 桐畑
Original Assignee
日本電気硝子株式会社
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Filing date
Publication date
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 WO2019244654A1 publication Critical patent/WO2019244654A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/10—Advancing webs by a feed band against which web is held by fluid pressure, e.g. suction or air blast
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/12—Advancing webs by suction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/30—Arrangements for accumulating surplus web
    • B65H20/32—Arrangements for accumulating surplus web by making loops
    • 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
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
    • B65H23/198—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations motor-controlled (Controlling electrical drive motors therefor)

Definitions

  • the present invention relates to a method of manufacturing a glass roll by cutting an unnecessary portion by cutting the glass ribbon in a longitudinal direction while conveying the glass ribbon, and then winding the glass ribbon around a core.
  • the manufacturing process of a glass film may include a process of manufacturing a glass roll by winding a glass ribbon from which the glass film is made into a roll shape.
  • Patent Document 1 discloses an example of a specific method for performing this step.
  • a glass ribbon is continuously formed by an overflow down draw method.
  • the formed glass ribbon is cut in the longitudinal direction while being conveyed. With this cutting, unnecessary parts (unnecessary parts including ears) located at both ends in the width direction of the glass ribbon are separated from effective parts (parts to be products later) located in the center in the width direction.
  • a glass roll consisting of only the effective portion is wound around a core to produce a glass roll.
  • the glass ribbon when the glass ribbon is wound, the glass ribbon is passed through a slack conveyance section for conveying the glass ribbon in a slack state, and then drawn around the core.
  • the tension acting on the part being wound is propagated to the part where the unnecessary part is being cut off. Due to this, the quality of the cut end formed along with the cutting (cutting) is deteriorated, and the glass ribbon is easily broken.
  • the slack conveyance section is provided, breakage of the glass ribbon can be suitably avoided.
  • Patent Document 1 has the above advantages, it has the following disadvantages.
  • the winding diameter of the glass roll gradually increases with the winding of the glass ribbon. Therefore, in order to avoid an increase in the rotation peripheral speed of the glass roll accompanying an increase in the winding diameter, it is necessary to gradually reduce the rotation speed of the core. This has made it more difficult to control the amount of slack in the above method.
  • the present invention which has been made in view of the above circumstances, is used to cut a glass ribbon into unnecessary portions, pass the slacked glass ribbon through a slack conveyance section, and then wind it around a core to produce a glass roll. It is a technical object to realize both easy control of the slack amount of the glass ribbon and winding of the glass ribbon with a constant tension.
  • the present invention was devised in order to solve the above-described problems, and after the glass ribbon is cut along the conveyance path in the longitudinal direction to cut unnecessary portions from the glass ribbon, the unnecessary portion of the glass is cut off.
  • a method of manufacturing a glass roll by passing a ribbon through a slack conveyance section on a conveyance path in a slack state, and then winding the ribbon around a core at a downstream end of the conveyance path, wherein the slack conveyance on the conveyance path is performed.
  • a transport section for transporting the glass ribbon to the downstream end side while fixedly holding the glass ribbon, and the transport section adjusts the transport speed of the glass ribbon, so that the glass ribbon in the slack transport section is provided. It is characterized by controlling the amount of slack.
  • the glass ribbon is conveyed to the downstream end while the glass ribbon is fixedly held between the slack conveyance section on the conveyance path and the downstream end. For this reason, a portion of the glass ribbon being transported by the transport unit (hereinafter, referred to as a transporting portion) is in a state of being fixedly held by the transport unit. For this reason, by adjusting the transfer speed of the glass ribbon by the transfer unit, the slack amount of the glass ribbon in the slack transfer section can be easily controlled. In addition, since the transport unit controls the slack amount in this manner, it is not necessary to control the slack amount by adjusting the winding speed by the winding core, and the winding speed can be kept constant.
  • a glass roll can be manufactured by winding the glass ribbon with a constant tension. From the above, according to the present method, both the easy control of the slack amount of the glass ribbon and the winding of the glass ribbon with a constant tension can be realized.
  • the transport unit may be a belt provided on the suction conveyor.
  • the transport section may be a rotating peripheral section of the suction roller.
  • the portion being conveyed can be fixedly held by the rotating peripheral portion of the suction roller.
  • the non-guaranteed surface of the front and back surfaces of the glass ribbon is fixedly held by the transport unit.
  • the glass ribbon may be cut in a state where the glass ribbon is superimposed on the protective sheet, and the glass ribbon separated from the protective sheet may be passed through the slack conveyance section.
  • the torque transmission between the winding core and the rotating shaft of the drive source for rotating the winding core be performed via a friction clutch.
  • the transfer speed of the glass ribbon by the transfer unit is appropriately changed to be faster or slower. It is very complicated to perform control such that the rotation speed of the rotation shaft of the drive source is changed in accordance with the change of the transport speed every time the change occurs. On the other hand, if the torque transmission between the winding core and the rotating shaft of the drive source is performed via a friction clutch, the frictional change in the transfer speed of the glass ribbon by the transfer unit as described above can be prevented. It is possible to respond by using the slip of the clutch.
  • the unnecessary portion is cut off from the glass ribbon, the slacked glass ribbon is passed through the conveyance section, and then wound around the core to produce a glass roll. Both easy control of the quantity and winding of the glass ribbon with a constant tension can be realized.
  • the manufacturing apparatus 1 cuts the glass ribbon 2 in the longitudinal direction at a cutting area P ⁇ b> 1 on the conveyance path while conveying the glass ribbon 2, and thereby the effective portion 2 a of the glass ribbon 2 (a part that will later become a product).
  • a cutting mechanism 3 that cuts an unnecessary part 2b (a part that is discarded without becoming a product) from the apparatus, and a glass ribbon 2 that has cut the unnecessary part 2b (a glass ribbon 2 consisting of only the effective part 2a) at the downstream end of the transport path.
  • a winding mechanism 7 for producing a glass roll 6 by winding around the core 5 in a state of being superposed on the belt-shaped protective sheet 4 at P2.
  • the glass ribbon 2 passes through the slack conveyance section T located between the cutting area P1 and the downstream end P2 on the conveyance path in a state where the glass ribbon 2 is slackened downward.
  • the glass ribbon 2 to be cut is glass whose shape is continuously formed by an overflow down draw method, and then the conveying direction is changed from a vertically lower direction to a horizontal direction.
  • the glass ribbon 2 includes unnecessary portions 2b located at both ends in the width direction (the direction perpendicular to the paper surface in FIG. 1) and an effective portion 2a located at the center in the width direction.
  • the glass ribbon 2 is formed to a thickness (for example, 300 ⁇ m or less) that can provide flexibility.
  • the upper surface 2c of the glass ribbon 2 is a guaranteed surface (a surface suitable for performing a film forming process or the like later), and the lower surface 2d is a non-guaranteed surface.
  • the method of forming the glass ribbon 2 is not limited to the overflow down draw method, but may be a float method, a slot down draw method, a redraw method, or the like.
  • the cutting mechanism 3 includes a transport device 8 for transporting the glass ribbon 2 in the cutting area P1, and a cutting device 9 for cutting the glass ribbon 2 being transported.
  • a belt conveyor that transports the glass ribbon 2 in a flat position is used.
  • the present invention is not limited to this, and a roller conveyor or the like can be used in addition to a belt conveyor.
  • the belt-shaped protective sheet 10 is supplied to the transport surface of the transport device 8 (here, the surface of the belt provided on the belt conveyor).
  • the belt-shaped protective sheet 10 is sent to the downstream side in a state of being superposed on the glass ribbon 2, then separated from the glass ribbon 2 and pulled out below the transport device 8 to be separated from the transport path of the glass ribbon 2.
  • a foamed resin sheet can be used as the belt-shaped protection sheet 10. The lower surface 2d of the glass ribbon 2 transported on the transport device 8 is protected by the belt-shaped protective sheet 10.
  • a laser cutting machine arranged above the transport device 8 is used. This laser cutting machine irradiates the laser L along the boundary between the effective part 2a and the unnecessary part 2b of the glass ribbon 2 passing below the glass ribbon 2, and also directs the refrigerant C toward the heated part with the irradiation. (For example, mist-like water) can be injected.
  • the glass ribbon 2 is continuously cut along the longitudinal direction by the laser cutting method by the above-mentioned cutting mechanism 3, and the effective part 2a and the unnecessary part 2b are separated.
  • the effective portion 2a and the unnecessary portion 2b may be separated from each other by using a laser fusing method other than the laser cutting method.
  • the unnecessary part 2b after the separation is detached downward from the conveyance path of the glass ribbon 2 (effective part 2a), cut into a length suitable for disposal, and discarded.
  • the cutting for disposal is performed by bending the upper surface 2c side of the unnecessary portion 2b to a convex shape and applying a bending stress.
  • an end portion in the width direction of the unnecessary portion 2b is scratched from an upper surface 2c side by a flaw member (not shown) for each length suitable for disposal. ing. This makes it easy to cut (break) the unnecessary portion 2b starting from the scratch.
  • a diamond grindstone, a diamond chip, sandpaper, or the like can be used as the injured member.
  • the take-up mechanism 7 includes a transport device 11 that transports the glass ribbon 2 in a flat posture, and a winding core 5 that winds the glass ribbon 2 unloaded from the transport device 11.
  • the transport device 11 is disposed between the slack transport section T and the downstream end P2 on the transport path.
  • the transfer device 11 includes a suction conveyor 12 and a plurality of transfer rollers 13.
  • the suction conveyor 12 includes a belt 12a as a transport unit that transports the glass ribbon 2 (effective portion 2a) to the downstream end P2 side while fixedly holding the glass ribbon 2 (effective portion 2a).
  • the term “fixed holding” as used herein means that both the belt 12 a and the part of the glass ribbon 2 being conveyed do not move relative to each other during the conveyance of the glass ribbon 2 by the suction conveyor 12. That is, it means that both the surface of the belt 12a and the lower surface 2d of the part being conveyed do not move relative to each other.
  • the belt 12a has a large number of suction holes (not shown) penetrating the belt 12a in the thickness direction.
  • a negative pressure generating mechanism (not shown) connected to a vacuum pump or the like is arranged on the inner peripheral side of the belt 12a.
  • the negative pressure generating mechanism generates a negative pressure on the glass ribbon 2 through the suction holes, thereby fixing and holding the lower surface 2d of the glass ribbon 2 with respect to the surface of the belt 12a serving as the conveyance surface by suction.
  • the glass ribbon 2 adsorbed on the belt 12a is transported downstream of the transport path under the same transport speed V1 as the feed speed V1 of the belt 12a.
  • the belt 12a may be configured to adsorb the entire width of the glass ribbon 2 in the width direction, or may be configured to adsorb only a part of the glass ribbon 2 in the width direction.
  • the plurality of transport rollers 13 are free rollers arranged along the transport path of the glass ribbon 2. Of course, some or all of the plurality of transport rollers 13 may be drive rollers.
  • the winding core 5 can rotate around an axis extending along the width direction of the glass ribbon 2.
  • the core 5 winds the glass ribbon 2 conveyed by the conveying device 11 to the downstream end P2 of the conveying path with the upper surface 2c side inside. Further, as shown by an arrow U, the winding core 5 can gradually move upward while winding up the glass ribbon 2. Thereby, even if the diameter of the glass roll 6 gradually increases as the winding progresses, the posture of the portion of the glass ribbon 2 that is bridged from the transport roller 13 to the core 5 is maintained horizontally. ing.
  • the rotation speed of the winding core 5 is set such that the portion of the glass ribbon 2 located between the suction conveyor 12 and the downstream end P2 has tension as the winding by the winding core 5 takes place.
  • the number of rotations of the core 5 gradually decreases. Thereby, regardless of the diameter of the glass roll 6, the rotational peripheral speed of the glass roll 6 is maintained constant.
  • the belt-shaped protective sheet 4 is supplied to the glass ribbon 2 wound around the core 5 from the lower surface 2d side.
  • a resin sheet PET film or the like
  • the belt-shaped protective sheet 4 is continuously pulled out from a sheet roll 14 disposed below as the core 5 rotates.
  • the belt-shaped protective sheet 4 is wound around the core 5 in a tensioned state (a state in which tension is applied).
  • the amount of slack of the glass ribbon 2 is detected above the conveyance path of the glass ribbon 2 by detecting the mutual distance D between the glass ribbon 2 and the upper surface 2c of the glass ribbon 2 (effective portion 2a).
  • a detector 15 is disposed as detecting means for performing the detection.
  • an ultrasonic displacement sensor is used as the detector 15.
  • the mutual distance D detected by the detector 15 is sent to the suction conveyor 12 as a detection result signal.
  • the suction conveyor 12 that has received the signal can adjust the feed speed V1 of the belt 12a (conveying speed V1 of the glass ribbon 2) so that the distance D between them becomes constant (to take a predetermined target value). It is.
  • the suction conveyor 12 functions as a slack control unit that controls the slack amount of the glass ribbon 2 in the slack conveyance section T by adjusting the conveyance speed V1 of the glass ribbon 2.
  • the feedback control for executing the detection of the slack amount by the detector 15 and the adjustment of the transport speed V1 based on the detection result is performed.
  • an ultrasonic displacement sensor is used as the detector 15 (detecting means), but the present invention is not limited to this.
  • a laser displacement sensor may be used instead of the ultrasonic displacement sensor.
  • the glass is a transparent body and the laser beam is easily transmitted therethrough, a laser displacement sensor may not be able to accurately detect the amount of slack in the glass. Therefore, an ultrasonic displacement sensor is preferable.
  • the amount of slack can be detected by imaging the glass in the slack transport section T with a camera and performing image processing.
  • the length of the mutual distance D is determined by both the feed speed V1 by the suction conveyor 12 and the feed speed V2 by the transport device 8.
  • the feed speed V2 by the transport device 8 is equal to the forming speed of the glass ribbon 2.
  • the adjustment of the feed speed V1 is preferably performed in the range of 0.95 ⁇ V2 ⁇ V1 ⁇ 1.15 ⁇ V2.
  • torque transmission between the winding core 5 and a rotating shaft 16 a of a drive source 16 for example, a motor or the like
  • the rotation speed of the drive source 16 on the rotation shaft 16 a is higher than the rotation speed of the core 5.
  • slippage occurs in the friction clutch 17 due to the difference in the number of rotations between the winding core 5 and the rotation shaft 16a of the drive source 16.
  • the suction conveyor 12 functions as the above-described slack control means, even if the feed speed V1 by the suction conveyor 12 increases or decreases, the driving source 16 is connected to the friction clutch 17.
  • the core 5 can be rotated with a constant torque.
  • it is also possible to adjust the motor rotation torque of the drive source 16 for example, torque control by a servo motor).
  • the effective state of the glass ribbon 2 superimposed on the belt-shaped protection sheet 10 on the conveying device 8 is improved.
  • the part 2a and the unnecessary part 2b are continuously separated.
  • the unnecessary part 2b after the division is discarded.
  • the glass ribbon 2 (effective portion 2 a) after the separation is carried out downstream from the conveying device 8, separated from the belt-shaped protective sheet 10, passed through the slack conveying section T, and transferred to the suction conveyor 12.
  • the suction conveyor 12 adjusts the feed speed V1 of the belt 12a according to the distance D detected by the detector 15 so that the distance D is constant. As described above, since the suction conveyor 12 adjusts the distance D between each other, the glass roll 6 can be manufactured by continuing to wind the glass ribbon 2 at a constant winding speed (constant tension).
  • the glass ribbon 2 is transported by the suction conveyor 12 between the slack transport section T and the downstream end P2.
  • the suction conveyor 12 conveys the glass ribbon 2 to the downstream side in a fixed state. For this reason, even if the glass ribbon 2 is provided with tension between the suction conveyor 12 and the downstream end P2 (the tension is applied), the suction conveyor 12 straddles the portion of the glass ribbon 2 being conveyed. In addition, it is possible to prevent the tension from propagating from the downstream side to the upstream side. Thereby, while the slack of the glass ribbon 2 in the slack conveyance section T can be maintained, the above-mentioned tension can be prevented from propagating to the part of the glass ribbon 2 that is cutting the unnecessary portion 2b. Therefore, it is possible to prevent the quality of the cut end portion formed on the glass ribbon 2 from being deteriorated due to the division of the unnecessary portion 2b, and it is possible to prevent the glass ribbon 2 from being broken.
  • the glass ribbon 2 carried out from the suction conveyor 12 is sent downstream by the plurality of transport rollers 13 and then wound around the core 5 at the downstream end P2.
  • the traveling direction of the glass ribbon 2 when the glass ribbon 2 is wound around the core 5 is different from the direction in which the glass ribbon 2 should originally travel. Can be prevented from being unduly tilted. For this reason, it is possible to prevent the winding deviation of the manufactured glass roll 6.
  • the method of manufacturing the glass roll according to the second embodiment is different from the above-described first embodiment in that a suction roller 18 is disposed instead of the suction conveyor 12 and the suction roller 18 is provided. Is that a transport section is constituted by the rotating peripheral portion 18a. In the present embodiment, the suction roller 18 (rotary peripheral portion 18a) functions as a slack control unit.
  • the method of manufacturing a glass roll according to the third embodiment is different from the above-described first embodiment in that a nip roller 19 is disposed instead of the suction conveyor 12 and the nip roller 19 is provided.
  • a transport section is constituted by the respective rotating peripheral portions 19aa of the pair of holding rollers 19a, 19a.
  • the pair of nipping rollers 19a, 19a (rotating peripheral portion 19aa) function as slack control means.
  • the pair of sandwiching rollers 19a, 19a can sandwich and hold the glass ribbon 2 in the thickness direction.
  • the glass ribbon 2 sandwiched by the sandwiching rollers 19a, 19a moves downstream of the transport path under the same transport speed V1 as the rotational peripheral speed of the rotating peripheral portion 19aa of the sandwich rollers 19a, 19a. To be transported.
  • the method for manufacturing a glass roll according to the present invention is not limited to the embodiment described in the above embodiment.
  • the glass roll 6 is manufactured by separating the unnecessary portion 2b from the glass ribbon 2 continuously formed by the overflow down draw method, and then winding it around the core 5. Not as long.
  • the present invention can also be applied to the present invention.
  • the glass ribbon 2 is wound around the core 5 with the upper surface 2c side inside, and the belt-shaped protective sheet 4 is supplied from the lower surface 2d side.
  • the glass ribbon may be wound around the core with the lower surface of the glass ribbon inside, and the belt-shaped protective sheet may be supplied from the upper surface.
  • the suction conveyor 12 adjusts the feed speed V1 of the belt 12a according to the mutual distance D detected by the detector 15 so that the mutual distance D is constant.
  • the core 5 is rotated with a constant torque, but this is not a limitation.
  • the control device receives the signal of the inter-distance D detected by the detector 15, and the control device simultaneously controls the rotation speed of the belt 12 a of the suction conveyor 12 and the rotation speed of the drive source 16. May be.
  • the control means simultaneously controls the transport speed of the transport unit and the winding speed of the glass ribbon, it is possible to manufacture the glass roll by continuing the winding of the glass ribbon with a constant tension.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Advancing Webs (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Winding Of Webs (AREA)

Abstract

In this method, after severing an unnecessary portion 2b by cutting a glass ribbon 2 in the longitudinal direction during conveyance, the glass ribbon 2, from which the unnecessary portion 2b has been cut off, is passed through a slack conveyance section T on the conveyance path with the slack conveyance section T in a slackened state, and is then wound around a winding core 5 at the downstream end P2 of the conveyance path to produce a glass roll 6, wherein a suction conveyor 12 is provided in the interval between the downstream end P2 and the slack conveyance section T on the conveyance path, and the slackness (distance D) of the glass ribbon 2 in the slack conveyance section T is controlled by the suction conveyer 12 adjusting the conveyance velocity V1 of the glass ribbon 2.

Description

ガラスロールの製造方法Manufacturing method of glass roll
　本発明は、ガラスリボンを搬送しつつ長手方向に切断することで不要部を分断した後、ガラスリボンを巻芯の周りに巻き取ってガラスロールを製造する方法に関する。 The present invention relates to a method of manufacturing a glass roll by cutting an unnecessary portion by cutting the glass ribbon in a longitudinal direction while conveying the glass ribbon, and then winding the glass ribbon around a core.
　近年、急速に普及しているスマートフォンやタブレット型ＰＣ等のモバイル端末は、薄型、軽量であることが求められるため、これらの端末に組み込まれるガラス基板にも薄板化に対する要請が高まっているのが現状である。このような現状の下、フィルム状にまで薄板化（例えば、厚みが３００μｍ以下）されたガラス基板であるガラスフィルムが開発、製造されるに至っている。 In recent years, mobile terminals such as smartphones and tablet PCs, which are rapidly spreading, are required to be thin and lightweight, and the demand for thinner glass substrates incorporated in these terminals is increasing. It is the current situation. Under such circumstances, a glass film which is a glass substrate thinned into a film shape (for example, having a thickness of 300 μm or less) has been developed and manufactured.
　ガラスフィルムの製造工程には、これの元となるガラスリボンをロール状に巻き取ってガラスロールを製造する工程が含まれる場合がある。そして、この工程を実行するための具体的な手法の一例が特許文献１に開示されている。 The manufacturing process of a glass film may include a process of manufacturing a glass roll by winding a glass ribbon from which the glass film is made into a roll shape. Patent Document 1 discloses an example of a specific method for performing this step.
　同文献に開示された手法においては、まず、オーバーフローダウンドロー法によりガラスリボンを連続的に成形する。次いで、成形したガラスリボンを搬送しつつ長手方向に切断する。この切断に伴ってガラスリボンの幅方向両端に位置する不要部（耳部を含んだ不要な部位）を幅方向中央に位置する有効部（後に製品となる部位）から分断する。最後に、有効部のみでなるガラスリボンを巻芯の周りに巻き取ってガラスロールを製造する。 手法 In the method disclosed in the document, first, a glass ribbon is continuously formed by an overflow down draw method. Next, the formed glass ribbon is cut in the longitudinal direction while being conveyed. With this cutting, unnecessary parts (unnecessary parts including ears) located at both ends in the width direction of the glass ribbon are separated from effective parts (parts to be products later) located in the center in the width direction. Finally, a glass roll consisting of only the effective portion is wound around a core to produce a glass roll.
　ここで、上記の手法では、ガラスリボンを巻き取るに際し、ガラスリボンを弛ませた状態で搬送する弛み搬送区間を通過させたのち、巻芯の周りに引き込んでいる。これにより、上記の手法によれば、下記のような不具合の発生を回避することが可能となる。 Here, in the above method, when the glass ribbon is wound, the glass ribbon is passed through a slack conveyance section for conveying the glass ribbon in a slack state, and then drawn around the core. Thus, according to the above-described method, it is possible to avoid the following problems.
　仮に弛み搬送区間を設けることなく、ガラスリボンを巻芯の周りに引き込んだ場合には、巻き取り中の部位に作用している張力が、不要部を分断中の部位まで伝播して作用する。このことに起因して、分断（切断）に伴って形成される切断端部の品位が悪化して、ガラスリボンが破断しやすくなってしまう。これに対して、上記の手法では、弛み搬送区間を設けているため、ガラスリボンの破断を好適に回避することができる。 If the glass ribbon is drawn around the core without providing the slack conveyance section, the tension acting on the part being wound is propagated to the part where the unnecessary part is being cut off. Due to this, the quality of the cut end formed along with the cutting (cutting) is deteriorated, and the glass ribbon is easily broken. On the other hand, in the above-described method, since the slack conveyance section is provided, breakage of the glass ribbon can be suitably avoided.
特開２０１５－１７４７４４号公報JP-A-2015-174744
　しかしながら、特許文献１に開示された手法には、上記のような利点がある一方で、下記のような難点が存在している。 However, while the method disclosed in Patent Document 1 has the above advantages, it has the following disadvantages.
　すなわち、上記の手法でガラスリボンの弛み量を制御するには、巻芯による巻き取り速度を調整することが必要となる。しかしながら、巻き取り速度を調整すると、巻芯が加速と減速とを繰り返すこととなり、一定の張力でガラスリボンの巻き取りを継続することが困難となる。その結果、製造されるガラスロールに巻きずれが生じる原因となる。このような事情から、ガラスリボンの弛み量の容易な制御と、一定の張力でのガラスリボンの巻き取りとの双方を実現できる技術の確立が期待されていた。 That is, in order to control the slack amount of the glass ribbon by the above method, it is necessary to adjust the winding speed by the core. However, when the winding speed is adjusted, the core repeatedly accelerates and decelerates, making it difficult to continue winding the glass ribbon with a constant tension. As a result, it causes winding deviation in the manufactured glass roll. Under such circumstances, it has been expected to establish a technology capable of realizing both easy control of the amount of slack of the glass ribbon and winding of the glass ribbon with a constant tension.
　なお、ガラスリボンの巻き取りに伴ってガラスロールの巻き取り径は徐々に大きくなっていく。そこで、巻き取り径の拡大に付随してガラスロールの回転周速度が高速化することを回避するため、巻芯の回転数は漸次に低下させていく必要がある。このことが上記の手法における弛み量の制御を一層難しくしていた。 The winding diameter of the glass roll gradually increases with the winding of the glass ribbon. Therefore, in order to avoid an increase in the rotation peripheral speed of the glass roll accompanying an increase in the winding diameter, it is necessary to gradually reduce the rotation speed of the core. This has made it more difficult to control the amount of slack in the above method.
　上記の事情に鑑みなされた本発明は、ガラスリボンから不要部を分断すると共に、分断後のガラスリボンに弛み搬送区間を通過させたのち、巻芯の周りに巻き取ってガラスロールを製造するに際し、ガラスリボンの弛み量の容易な制御と、一定の張力でのガラスリボンの巻き取りとの双方を実現することを技術的な課題とする。 The present invention, which has been made in view of the above circumstances, is used to cut a glass ribbon into unnecessary portions, pass the slacked glass ribbon through a slack conveyance section, and then wind it around a core to produce a glass roll. It is a technical object to realize both easy control of the slack amount of the glass ribbon and winding of the glass ribbon with a constant tension.
　上記の課題を解決するために創案された本発明は、ガラスリボンを搬送経路に沿って搬送しつつ長手方向に切断することでガラスリボンから不要部を分断した後、不要部が分断されたガラスリボンに搬送経路上の弛み搬送区間を弛ませた状態で通過させたのち、搬送経路の下流端で巻芯の周りに巻き取ってガラスロールを製造する方法であって、搬送経路上における弛み搬送区間と下流端との相互間に、ガラスリボンを固定保持した状態で下流端側へ搬送する搬送部を設け、搬送部は、ガラスリボンの搬送速度を調節することで、弛み搬送区間におけるガラスリボンの弛み量を制御することに特徴付けられる。 The present invention was devised in order to solve the above-described problems, and after the glass ribbon is cut along the conveyance path in the longitudinal direction to cut unnecessary portions from the glass ribbon, the unnecessary portion of the glass is cut off. A method of manufacturing a glass roll by passing a ribbon through a slack conveyance section on a conveyance path in a slack state, and then winding the ribbon around a core at a downstream end of the conveyance path, wherein the slack conveyance on the conveyance path is performed. Between the section and the downstream end, there is provided a transport section for transporting the glass ribbon to the downstream end side while fixedly holding the glass ribbon, and the transport section adjusts the transport speed of the glass ribbon, so that the glass ribbon in the slack transport section is provided. It is characterized by controlling the amount of slack.
　本方法では、搬送経路上における弛み搬送区間と下流端との相互間にて、搬送部がガラスリボンを固定保持した状態で下流端側へ搬送する。このことから、ガラスリボンのうち、搬送部によって搬送中の部位（以下、搬送中部位と表記）は、搬送部に固定保持された状態となる。そのため、搬送部がガラスリボンの搬送速度を調整することで、弛み搬送区間におけるガラスリボンの弛み量を容易に制御することができる。また、このように搬送部が弛み量を制御するため、巻芯による巻き取り速度を調節することによって弛み量を制御する必要がなく、巻き取り速度を一定なものとすることができる。この結果、一定の張力でガラスリボンを巻き取ってガラスロールを製造できる。以上のことから、本方法によれば、ガラスリボンの弛み量の容易な制御と、一定の張力でのガラスリボンの巻き取りとの双方を実現できる。 In the present method, the glass ribbon is conveyed to the downstream end while the glass ribbon is fixedly held between the slack conveyance section on the conveyance path and the downstream end. For this reason, a portion of the glass ribbon being transported by the transport unit (hereinafter, referred to as a transporting portion) is in a state of being fixedly held by the transport unit. For this reason, by adjusting the transfer speed of the glass ribbon by the transfer unit, the slack amount of the glass ribbon in the slack transfer section can be easily controlled. In addition, since the transport unit controls the slack amount in this manner, it is not necessary to control the slack amount by adjusting the winding speed by the winding core, and the winding speed can be kept constant. As a result, a glass roll can be manufactured by winding the glass ribbon with a constant tension. From the above, according to the present method, both the easy control of the slack amount of the glass ribbon and the winding of the glass ribbon with a constant tension can be realized.
　上記の方法では、検出手段によるガラスリボンの弛み量の検出と、検出結果に基づいた搬送部によるガラスリボンの搬送速度の調節とを実行するフィードバック制御を行うことが好ましい。 In the above method, it is preferable to perform feedback control for detecting the slack amount of the glass ribbon by the detecting unit and adjusting the glass ribbon conveying speed by the conveying unit based on the detection result.
　このようにすれば、ガラスリボンの弛み量について、弛み量が所定の目標値をとるように、或いは、所定の目標値に近づくように好適に制御を行うことが可能となる。 With this configuration, it is possible to suitably control the slack amount of the glass ribbon so that the slack amount takes a predetermined target value or approaches the predetermined target value.
　上記の方法では、搬送部が、吸着コンベアに備わったベルトであってもよい。 で は In the above method, the transport unit may be a belt provided on the suction conveyor.
　このようにすれば、吸着コンベアに備わったベルトにより、搬送中部位を固定保持することが可能となる。 In this case, it is possible to fix and hold the part being conveyed by the belt provided on the suction conveyor.
　上記の方法では、搬送部が、サクションローラーの回転周部であってもよい。 で は In the above method, the transport section may be a rotating peripheral section of the suction roller.
　このようにすれば、サクションローラーの回転周部により、搬送中部位を固定保持することが可能となる。 In this case, the portion being conveyed can be fixedly held by the rotating peripheral portion of the suction roller.
　上記の方法では、ガラスリボンの表裏面のうち、非保証面となる面を搬送部に固定保持させることが好ましい。 In the above method, it is preferable that the non-guaranteed surface of the front and back surfaces of the glass ribbon is fixedly held by the transport unit.
　このようにすれば、搬送部がガラスリボンを搬送する際、搬送部との接触により、ガラスリボンの保証面が汚染されることを回避できる。 With this configuration, when the transport unit transports the glass ribbon, it is possible to avoid contamination of the guarantee surface of the glass ribbon due to contact with the transport unit.
　上記の方法では、ガラスリボンを保護シート上に重ね合わせた状態で切断すると共に、保護シートから分離させた状態のガラスリボンに弛み搬送区間を通過させてもよい。 In the above method, the glass ribbon may be cut in a state where the glass ribbon is superimposed on the protective sheet, and the glass ribbon separated from the protective sheet may be passed through the slack conveyance section.
　このようにすれば、保護シートと重ね合わせることで、ガラスリボンに傷等が発生することを可及的に回避できる。さらに、保護シートから分離させた状態のガラスリボンに弛み搬送区間を通過させることで、当該区間を通過後のガラスリボンを搬送部が固定保持するに際し、これを好適に行うことが可能となる。 れ ば In this way, it is possible to avoid as much as possible the glass ribbon from being damaged by overlapping with the protective sheet. Further, by allowing the glass ribbon separated from the protective sheet to pass through the slack conveyance section, the glass ribbon after passing the section can be appropriately fixed when the conveyance section holds the glass ribbon.
　上記の方法では、巻芯と、巻芯を回転させるための駆動源の回転軸との間におけるトルク伝達を、摩擦クラッチを介して行うことが好ましい。 In the above method, it is preferable that the torque transmission between the winding core and the rotating shaft of the drive source for rotating the winding core be performed via a friction clutch.
　弛み量の制御のため、搬送部によるガラスリボンの搬送速度は、適宜変化して速くなったり、遅くなったりする。この搬送速度の変化が生じる度に、その変化に合わせて駆動源の回転軸の回転数を変更するように制御を行うことは非常に煩雑である。これに対して、巻芯と駆動源の回転軸との間のトルク伝達を、摩擦クラッチを介して行うようにすれば、上記のような搬送部によるガラスリボンの搬送速度の変化に対し、摩擦クラッチの滑りを利用して対応することが可能となる。 の た め For controlling the slack amount, the transfer speed of the glass ribbon by the transfer unit is appropriately changed to be faster or slower. It is very complicated to perform control such that the rotation speed of the rotation shaft of the drive source is changed in accordance with the change of the transport speed every time the change occurs. On the other hand, if the torque transmission between the winding core and the rotating shaft of the drive source is performed via a friction clutch, the frictional change in the transfer speed of the glass ribbon by the transfer unit as described above can be prevented. It is possible to respond by using the slip of the clutch.
　本発明によれば、ガラスリボンから不要部を分断すると共に、分断後のガラスリボンに弛み搬送区間を通過させたのち、巻芯の周りに巻き取ってガラスロールを製造するに際し、ガラスリボンの弛み量の容易な制御と、一定の張力でのガラスリボンの巻き取りとの双方を実現することが可能となる。 According to the present invention, the unnecessary portion is cut off from the glass ribbon, the slacked glass ribbon is passed through the conveyance section, and then wound around the core to produce a glass roll. Both easy control of the quantity and winding of the glass ribbon with a constant tension can be realized.
本発明の第一実施形態に係るガラスロールの製造方法を示す側面図である。It is a side view showing the manufacturing method of the glass roll concerning a first embodiment of the present invention. 本発明の第一実施形態に係るガラスロールの製造方法を示す平面図である。It is a top view showing the manufacturing method of the glass roll concerning a first embodiment of the present invention. 本発明の第二実施形態に係るガラスロールの製造方法を示す側面図である。It is a side view showing the manufacturing method of the glass roll concerning a second embodiment of the present invention. 本発明の第三実施形態に係るガラスロールの製造方法を示す側面図である。It is a side view showing the manufacturing method of the glass roll concerning a third embodiment of the present invention.
　以下、本発明の実施形態に係るガラスロールの製造方法について、添付の図面を参照しながら説明する。 Hereinafter, a method for manufacturing a glass roll according to an embodiment of the present invention will be described with reference to the accompanying drawings.
＜第一実施形態＞
　はじめに、本発明の第一実施形態に係るガラスロールの製造方法に用いる製造装置の構成を説明する。 <First embodiment>
First, the configuration of a manufacturing apparatus used in the method for manufacturing a glass roll according to the first embodiment of the present invention will be described.
　図１に示すように、製造装置１は、ガラスリボン２を搬送しつつ搬送経路上の切断領域Ｐ１にて長手方向に切断することで、ガラスリボン２の有効部２ａ（後に製品となる部位）から不要部２ｂ（製品とならずに廃棄される部位）を分断する分断機構３と、不要部２ｂを分断したガラスリボン２（有効部２ａのみでなるガラスリボン２）を、搬送経路の下流端Ｐ２にて帯状保護シート４と重ね合わせた状態で巻芯５の周りに巻き取ることで、ガラスロール６を作製する巻取機構７とを備えている。 As shown in FIG. 1, the manufacturing apparatus 1 cuts the glass ribbon 2 in the longitudinal direction at a cutting area P <b> 1 on the conveyance path while conveying the glass ribbon 2, and thereby the effective portion 2 a of the glass ribbon 2 (a part that will later become a product). A cutting mechanism 3 that cuts an unnecessary part 2b (a part that is discarded without becoming a product) from the apparatus, and a glass ribbon 2 that has cut the unnecessary part 2b (a glass ribbon 2 consisting of only the effective part 2a) at the downstream end of the transport path. There is provided a winding mechanism 7 for producing a glass roll 6 by winding around the core 5 in a state of being superposed on the belt-shaped protective sheet 4 at P2.
　本製造装置１では、搬送経路上における切断領域Ｐ１と下流端Ｐ２との相互間に位置した弛み搬送区間Ｔを、ガラスリボン２が下方に弛んだ状態で通過していく。 製造 In the manufacturing apparatus 1, the glass ribbon 2 passes through the slack conveyance section T located between the cutting area P1 and the downstream end P2 on the conveyance path in a state where the glass ribbon 2 is slackened downward.
　ここで、切断の対象となるガラスリボン２は、オーバーフローダウンドロー法により連続的に成形した後、その搬送方向を鉛直下方から水平方向に転換させたガラスである。このガラスリボン２は、幅方向（図１では紙面に鉛直な方向）両端に位置する不要部２ｂと、幅方向中央に位置する有効部２ａとを含んでいる。ガラスリボン２は可撓性を付与できる程度の厚み（例えば、３００μｍ以下）に成形されている。本実施形態では、ガラスリボン２の上面２ｃが保証面（後に成膜処理等を施すのに適した面）であり、下面２ｄが非保証面である。なお、ガラスリボン２の成形方法は、オーバーフローダウンドロー法に限らず、フロート法やスロットダウンドロー法、リドロー法等であってもよい。 ガ ラ ス Here, the glass ribbon 2 to be cut is glass whose shape is continuously formed by an overflow down draw method, and then the conveying direction is changed from a vertically lower direction to a horizontal direction. The glass ribbon 2 includes unnecessary portions 2b located at both ends in the width direction (the direction perpendicular to the paper surface in FIG. 1) and an effective portion 2a located at the center in the width direction. The glass ribbon 2 is formed to a thickness (for example, 300 μm or less) that can provide flexibility. In the present embodiment, the upper surface 2c of the glass ribbon 2 is a guaranteed surface (a surface suitable for performing a film forming process or the like later), and the lower surface 2d is a non-guaranteed surface. The method of forming the glass ribbon 2 is not limited to the overflow down draw method, but may be a float method, a slot down draw method, a redraw method, or the like.
　分断機構３は、切断領域Ｐ１にてガラスリボン２を搬送するための搬送装置８と、搬送中のガラスリボン２を切断するための切断装置９とを備えている。 The cutting mechanism 3 includes a transport device 8 for transporting the glass ribbon 2 in the cutting area P1, and a cutting device 9 for cutting the glass ribbon 2 being transported.
　搬送装置８としては、ガラスリボン２を平置き姿勢で搬送するベルトコンベアを使用している。勿論、これに限定されるものではなく、ベルトコンベアの他、ローラーコンベア等を使用することも可能である。また、固定して設置された定盤と、この定盤上を摺動する帯状のシート（例えば、後述の帯状保護シート１０）とで搬送装置８を構成することも可能である。 ベ ル ト As the transport device 8, a belt conveyor that transports the glass ribbon 2 in a flat position is used. Of course, the present invention is not limited to this, and a roller conveyor or the like can be used in addition to a belt conveyor. Further, it is also possible to configure the transport device 8 with a fixed base plate and a belt-shaped sheet sliding on the base plate (for example, a belt-shaped protection sheet 10 described later).
　搬送装置８の搬送面（ここでは、ベルトコンベアに備わったベルトの表面）に対しては、帯状保護シート１０が供給されている。この帯状保護シート１０は、ガラスリボン２と重ね合わされた状態で下流側に送られた後、ガラスリボン２から分離させて搬送装置８の下方に引き出すことでガラスリボン２の搬送経路から離脱させる。なお、帯状保護シート１０としては、例えば、発泡樹脂シートを使用することが可能である。この帯状保護シート１０により、搬送装置８上を搬送されるガラスリボン２の下面２ｄが保護される。 帯 The belt-shaped protective sheet 10 is supplied to the transport surface of the transport device 8 (here, the surface of the belt provided on the belt conveyor). The belt-shaped protective sheet 10 is sent to the downstream side in a state of being superposed on the glass ribbon 2, then separated from the glass ribbon 2 and pulled out below the transport device 8 to be separated from the transport path of the glass ribbon 2. In addition, as the belt-shaped protection sheet 10, for example, a foamed resin sheet can be used. The lower surface 2d of the glass ribbon 2 transported on the transport device 8 is protected by the belt-shaped protective sheet 10.
　切断装置９としては、搬送装置８の上方に配置したレーザー切断機を使用している。このレーザー切断機は、自身の下方を通過するガラスリボン２の有効部２ａと不要部２ｂとの境界線に沿ってレーザーＬを照射すると共に、照射に伴って加熱された箇所に向けて冷媒Ｃ（例えば、ミスト状の水）を噴射することが可能となっている。 レ ー ザ ー As the cutting device 9, a laser cutting machine arranged above the transport device 8 is used. This laser cutting machine irradiates the laser L along the boundary between the effective part 2a and the unnecessary part 2b of the glass ribbon 2 passing below the glass ribbon 2, and also directs the refrigerant C toward the heated part with the irradiation. (For example, mist-like water) can be injected.
　上記の分断機構３により、レーザー割断法を利用してガラスリボン２が長手方向に沿って連続的に切断され、有効部２ａと不要部２ｂとが分断されていく。なお、レーザー割断法の他、レーザー溶断法を利用して有効部２ａと不要部２ｂとを分断してもよい。 (4) The glass ribbon 2 is continuously cut along the longitudinal direction by the laser cutting method by the above-mentioned cutting mechanism 3, and the effective part 2a and the unnecessary part 2b are separated. The effective portion 2a and the unnecessary portion 2b may be separated from each other by using a laser fusing method other than the laser cutting method.
　分断後の不要部２ｂは、ガラスリボン２（有効部２ａ）の搬送経路から下方に離脱させ、廃棄に適した長さに切断して廃棄する。この廃棄のための切断は、不要部２ｂの上面２ｃ側を凸に湾曲させ、曲げ応力を付与することで実行される。本実施形態では、不要部２ｂの切断を容易にするため、廃棄に適した長さ毎に不要部２ｂの幅方向端部に対して上面２ｃ側から加傷部材（図示省略）により傷を付けている。これにより、傷を起点として不要部２ｂを切断（破断）しやすくなる。加傷部材としては、ダイヤモンド砥石やダイヤモンドチップ、サンドペーパー等を使用できる。 (4) The unnecessary part 2b after the separation is detached downward from the conveyance path of the glass ribbon 2 (effective part 2a), cut into a length suitable for disposal, and discarded. The cutting for disposal is performed by bending the upper surface 2c side of the unnecessary portion 2b to a convex shape and applying a bending stress. In the present embodiment, in order to facilitate the cutting of the unnecessary portion 2b, an end portion in the width direction of the unnecessary portion 2b is scratched from an upper surface 2c side by a flaw member (not shown) for each length suitable for disposal. ing. This makes it easy to cut (break) the unnecessary portion 2b starting from the scratch. As the injured member, a diamond grindstone, a diamond chip, sandpaper, or the like can be used.
　巻取機構７は、ガラスリボン２を平置き姿勢で搬送する搬送装置１１と、搬送装置１１から搬出されたガラスリボン２を巻き取る巻芯５とを備えている。 The take-up mechanism 7 includes a transport device 11 that transports the glass ribbon 2 in a flat posture, and a winding core 5 that winds the glass ribbon 2 unloaded from the transport device 11.
　搬送装置１１は、搬送経路上における弛み搬送区間Ｔと下流端Ｐ２との相互間に配置されている。この搬送装置１１は、吸着コンベア１２と、複数の搬送ローラー１３とを備えている。 The transport device 11 is disposed between the slack transport section T and the downstream end P2 on the transport path. The transfer device 11 includes a suction conveyor 12 and a plurality of transfer rollers 13.
　吸着コンベア１２は、ガラスリボン２（有効部２ａ）を固定保持した状態で下流端Ｐ２側へ搬送する搬送部としてのベルト１２ａを備えている。ここで言う「固定保持」とは、吸着コンベア１２によるガラスリボン２の搬送中に、ベルト１２ａとガラスリボン２における搬送中の部位との両者が相対移動しないことを意味する。つまり、ベルト１２ａの表面と搬送中の部位の下面２ｄとの両者が相対移動しないことを意味している。 (4) The suction conveyor 12 includes a belt 12a as a transport unit that transports the glass ribbon 2 (effective portion 2a) to the downstream end P2 side while fixedly holding the glass ribbon 2 (effective portion 2a). The term “fixed holding” as used herein means that both the belt 12 a and the part of the glass ribbon 2 being conveyed do not move relative to each other during the conveyance of the glass ribbon 2 by the suction conveyor 12. That is, it means that both the surface of the belt 12a and the lower surface 2d of the part being conveyed do not move relative to each other.
　ベルト１２ａには、当該ベルト１２ａを厚み方向に貫通した多数の吸着用孔（図示省略）が形成されている。また、ベルト１２ａの内周側には、真空ポンプ等と接続された負圧発生機構（図示省略）が配置されている。この負圧発生機構が、吸着用孔を介してガラスリボン２に負圧を発生させることで、搬送面となるベルト１２ａの表面に対してガラスリボン２の下面２ｄを吸着により固定保持する。これにより、ベルト１２ａに吸着された状態のガラスリボン２は、ベルト１２ａの送り速度Ｖ１と同一の搬送速度Ｖ１の下で、搬送経路の下流側に搬送されていく。なお、ベルト１２ａは、ガラスリボン２の幅方向における全幅を吸着する構成であってもよいし、幅方向における一部のみを吸着する構成であってもよい。 The belt 12a has a large number of suction holes (not shown) penetrating the belt 12a in the thickness direction. A negative pressure generating mechanism (not shown) connected to a vacuum pump or the like is arranged on the inner peripheral side of the belt 12a. The negative pressure generating mechanism generates a negative pressure on the glass ribbon 2 through the suction holes, thereby fixing and holding the lower surface 2d of the glass ribbon 2 with respect to the surface of the belt 12a serving as the conveyance surface by suction. As a result, the glass ribbon 2 adsorbed on the belt 12a is transported downstream of the transport path under the same transport speed V1 as the feed speed V1 of the belt 12a. The belt 12a may be configured to adsorb the entire width of the glass ribbon 2 in the width direction, or may be configured to adsorb only a part of the glass ribbon 2 in the width direction.
　複数の搬送ローラー１３は、ガラスリボン２の搬送経路に沿って並べられたフリーローラーである。勿論、複数の搬送ローラー１３の一部または全部が駆動ローラーであってもよい。 The plurality of transport rollers 13 are free rollers arranged along the transport path of the glass ribbon 2. Of course, some or all of the plurality of transport rollers 13 may be drive rollers.
　巻芯５は、ガラスリボン２の幅方向に沿って延びる軸心を中心に回転することが可能である。この巻芯５は、搬送装置１１により搬送経路の下流端Ｐ２まで搬送されてきたガラスリボン２を、その上面２ｃ側を内側にして巻き取る。また、巻芯５は、矢印Ｕで示すように、ガラスリボン２を巻き取りつつ漸次に上方に移動することが可能となっている。これにより、巻き取りの進行に伴ってガラスロール６の径が次第に拡大しても、ガラスリボン２における搬送ローラー１３から巻芯５に架け渡された部位の姿勢が水平に維持されるようになっている。 The winding core 5 can rotate around an axis extending along the width direction of the glass ribbon 2. The core 5 winds the glass ribbon 2 conveyed by the conveying device 11 to the downstream end P2 of the conveying path with the upper surface 2c side inside. Further, as shown by an arrow U, the winding core 5 can gradually move upward while winding up the glass ribbon 2. Thereby, even if the diameter of the glass roll 6 gradually increases as the winding progresses, the posture of the portion of the glass ribbon 2 that is bridged from the transport roller 13 to the core 5 is maintained horizontally. ing.
　巻芯５の回転数は、当該巻芯５による巻き取りに伴い、ガラスリボン２における吸着コンベア１２と下流端Ｐ２との相互間に位置する部位が張りを持つような回転数とされている。なお、ガラスロール６の径が次第に拡大していくのに伴い、巻芯５の回転数は漸次に低下する構成とされている。これにより、ガラスロール６の径の大小を問わず、ガラスロール６の回転周速度が一定に維持されるようになっている。 回 転 The rotation speed of the winding core 5 is set such that the portion of the glass ribbon 2 located between the suction conveyor 12 and the downstream end P2 has tension as the winding by the winding core 5 takes place. In addition, as the diameter of the glass roll 6 gradually increases, the number of rotations of the core 5 gradually decreases. Thereby, regardless of the diameter of the glass roll 6, the rotational peripheral speed of the glass roll 6 is maintained constant.
　巻芯５に巻き取られていくガラスリボン２に対しては、その下面２ｄ側から帯状保護シート４を供給している。帯状保護シート４としては、例えば、樹脂製のシート（ＰＥＴフィルム等）を使用することが可能である。この帯状保護シート４は、巻芯５の回転に伴って下方に配置されたシートロール１４から連続的に引き出されてくる。なお、帯状保護シート４は、張りを持った状態（張力が作用した状態）で巻芯５に巻き付いていく。 帯 The belt-shaped protective sheet 4 is supplied to the glass ribbon 2 wound around the core 5 from the lower surface 2d side. As the belt-shaped protective sheet 4, for example, a resin sheet (PET film or the like) can be used. The belt-shaped protective sheet 4 is continuously pulled out from a sheet roll 14 disposed below as the core 5 rotates. In addition, the belt-shaped protective sheet 4 is wound around the core 5 in a tensioned state (a state in which tension is applied).
　弛み搬送区間Ｔにおいて、ガラスリボン２の搬送経路の上方には、自身とガラスリボン２（有効部２ａ）の上面２ｃとの相互間距離Ｄを検出することで、ガラスリボン２の弛み量を検出する検出手段としての検出器１５が配置されている。本実施形態では、検出器１５として超音波式変位センサーを使用している。この検出器１５が検出した相互間距離Ｄは、検出結果の信号として吸着コンベア１２に送られる。信号を受信した吸着コンベア１２は、相互間距離Ｄが一定になるように（所定の目標値をとるように）ベルト１２ａの送り速度Ｖ１（ガラスリボン２の搬送速度Ｖ１）を調節することが可能である。つまり、吸着コンベア１２（ベルト１２ａ）は、ガラスリボン２の搬送速度Ｖ１を調節することで、弛み搬送区間Ｔにおけるガラスリボン２の弛み量を制御する弛み制御手段として機能する。このように本実施形態では、検出器１５による弛み量の検出と、検出結果に基づいた搬送速度Ｖ１の調節とを実行するフィードバック制御が行われる。 In the slack conveyance section T, the amount of slack of the glass ribbon 2 is detected above the conveyance path of the glass ribbon 2 by detecting the mutual distance D between the glass ribbon 2 and the upper surface 2c of the glass ribbon 2 (effective portion 2a). A detector 15 is disposed as detecting means for performing the detection. In the present embodiment, an ultrasonic displacement sensor is used as the detector 15. The mutual distance D detected by the detector 15 is sent to the suction conveyor 12 as a detection result signal. The suction conveyor 12 that has received the signal can adjust the feed speed V1 of the belt 12a (conveying speed V1 of the glass ribbon 2) so that the distance D between them becomes constant (to take a predetermined target value). It is. That is, the suction conveyor 12 (belt 12a) functions as a slack control unit that controls the slack amount of the glass ribbon 2 in the slack conveyance section T by adjusting the conveyance speed V1 of the glass ribbon 2. As described above, in the present embodiment, the feedback control for executing the detection of the slack amount by the detector 15 and the adjustment of the transport speed V1 based on the detection result is performed.
　ここで、本実施形態では、検出器１５（検出手段）として超音波式変位センサーを用いているが、この限りではない。検出器１５として、超音波式変位センサーに代えて、レーザー式変位センサーを用いてもよい。ただし、ガラスは透明体であり、レーザー光が透過し易いことから、レーザー式変位センサーではガラスの弛み量を正確に検出できない場合があるため、超音波式変位センサーの方が好ましい。また、変位センサー以外の方法として、弛み搬送区間Ｔのガラスをカメラで撮像して画像処理することによっても弛み量を検出できる。 Here, in the present embodiment, an ultrasonic displacement sensor is used as the detector 15 (detecting means), but the present invention is not limited to this. As the detector 15, a laser displacement sensor may be used instead of the ultrasonic displacement sensor. However, since the glass is a transparent body and the laser beam is easily transmitted therethrough, a laser displacement sensor may not be able to accurately detect the amount of slack in the glass. Therefore, an ultrasonic displacement sensor is preferable. In addition, as a method other than the displacement sensor, the amount of slack can be detected by imaging the glass in the slack transport section T with a camera and performing image processing.
　詳述すると、相互間距離Ｄの長短は、吸着コンベア１２による送り速度Ｖ１と、搬送装置８による送り速度Ｖ２との両速度により決定される。ここで、搬送装置８による送り速度Ｖ２は、ガラスリボン２の成形速度に等しい。この送り速度Ｖ２に対して吸着コンベア１２による送り速度Ｖ１を速くしたり、遅くしたりすることで、ガラスリボン２の下方への弛み量が制御され、相互間距離Ｄが一定になるように制御される。送り速度Ｖ１の調節は、０．９５×Ｖ２≦Ｖ１≦１．１５×Ｖ２の範囲で行われることが好ましい。 Specifically, the length of the mutual distance D is determined by both the feed speed V1 by the suction conveyor 12 and the feed speed V2 by the transport device 8. Here, the feed speed V2 by the transport device 8 is equal to the forming speed of the glass ribbon 2. By increasing or decreasing the feed speed V1 by the suction conveyor 12 with respect to the feed speed V2, the amount of slack of the glass ribbon 2 downward is controlled, and the distance D between the glass ribbons 2 is controlled to be constant. Is done. The adjustment of the feed speed V1 is preferably performed in the range of 0.95 × V2 ≦ V1 ≦ 1.15 × V2.
　図２に示すように、巻芯５と、巻芯５を回転させるための駆動源１６（例えば、モーター等）の回転軸１６ａとの間におけるトルク伝達は、摩擦クラッチ１７を介して行われる。駆動源１６の回転軸１６ａにおける回転数は、巻芯５の回転数よりも高くなっている。これにより、巻芯５と駆動源１６の回転軸１６ａとの間における回転数の差に起因して、摩擦クラッチ１７には滑りが発生する。これにより、吸着コンベア１２が前述の弛み制御手段として機能する場合において、吸着コンベア１２による送り速度Ｖ１が速くなったり遅くなったりしたとしても、駆動源１６が摩擦クラッチ１７と連結されているため、一定のトルクで巻芯５を回転させることができる。また、摩擦クラッチ１７を用いる以外の方法として、駆動源１６のモーター回転トルクを調整（例えばサーボモーターによるトルク制御）しても対応することが可能である。 As shown in FIG. 2, torque transmission between the winding core 5 and a rotating shaft 16 a of a drive source 16 (for example, a motor or the like) for rotating the winding core 5 is performed via a friction clutch 17. The rotation speed of the drive source 16 on the rotation shaft 16 a is higher than the rotation speed of the core 5. Thereby, slippage occurs in the friction clutch 17 due to the difference in the number of rotations between the winding core 5 and the rotation shaft 16a of the drive source 16. Accordingly, when the suction conveyor 12 functions as the above-described slack control means, even if the feed speed V1 by the suction conveyor 12 increases or decreases, the driving source 16 is connected to the friction clutch 17. The core 5 can be rotated with a constant torque. As a method other than using the friction clutch 17, it is also possible to adjust the motor rotation torque of the drive source 16 (for example, torque control by a servo motor).
　次に、上記の製造装置１を用いた本発明の第一実施形態に係るガラスロールの製造方法、及び、その作用・効果を説明する。 Next, a method of manufacturing the glass roll according to the first embodiment of the present invention using the above-described manufacturing apparatus 1, and the operation and effect thereof will be described.
　図１に示すように、成形後のガラスリボン２が搬送経路上の切断領域Ｐ１まで搬送されてくると、搬送装置８上で帯状保護シート１０と重ね合わされた状態のガラスリボン２について、その有効部２ａと不要部２ｂとを連続的に分断する。分断後の不要部２ｂは廃棄する。分断後のガラスリボン２（有効部２ａ）は、搬送装置８から下流側に搬出し、帯状保護シート１０から分離させた後、弛み搬送区間Ｔを通過させて吸着コンベア１２に移乗させる。 As shown in FIG. 1, when the formed glass ribbon 2 is conveyed to the cutting area P1 on the conveyance path, the effective state of the glass ribbon 2 superimposed on the belt-shaped protection sheet 10 on the conveying device 8 is improved. The part 2a and the unnecessary part 2b are continuously separated. The unnecessary part 2b after the division is discarded. The glass ribbon 2 (effective portion 2 a) after the separation is carried out downstream from the conveying device 8, separated from the belt-shaped protective sheet 10, passed through the slack conveying section T, and transferred to the suction conveyor 12.
　吸着コンベア１２は、検出器１５が検出した相互間距離Ｄに応じて、相互間距離Ｄが一定となるようにベルト１２ａの送り速度Ｖ１を調節する。このように吸着コンベア１２が相互間距離Ｄの調整を行うため、一定の巻き取り速度（一定の張力）でのガラスリボン２の巻き取りを継続してガラスロール６を製造することができる。 (4) The suction conveyor 12 adjusts the feed speed V1 of the belt 12a according to the distance D detected by the detector 15 so that the distance D is constant. As described above, since the suction conveyor 12 adjusts the distance D between each other, the glass roll 6 can be manufactured by continuing to wind the glass ribbon 2 at a constant winding speed (constant tension).
　このようにして弛み搬送区間Ｔと下流端Ｐ２との相互間において、吸着コンベア１２にガラスリボン２を搬送させる。この吸着コンベア１２は、ガラスリボン２を固定保持した状態で下流側に搬送する。このことから、吸着コンベア１２と下流端Ｐ２との相互間でガラスリボン２に張りを持たせた（張力を作用させた）としても、吸着コンベア１２が搬送中のガラスリボン２の部位を跨いで、張力が下流側から上流側に伝播することを回避できる。これにより、弛み搬送区間Ｔにおけるガラスリボン２の弛みを維持できると共に、上記の張力がガラスリボン２における不要部２ｂを分断中の部位まで伝播することを防止できる。従って、不要部２ｂの分断に伴ってガラスリボン２に形成される切断端部の品位が悪化することを阻止でき、ガラスリボン２の破断を回避することが可能となる。 よ う Thus, the glass ribbon 2 is transported by the suction conveyor 12 between the slack transport section T and the downstream end P2. The suction conveyor 12 conveys the glass ribbon 2 to the downstream side in a fixed state. For this reason, even if the glass ribbon 2 is provided with tension between the suction conveyor 12 and the downstream end P2 (the tension is applied), the suction conveyor 12 straddles the portion of the glass ribbon 2 being conveyed. In addition, it is possible to prevent the tension from propagating from the downstream side to the upstream side. Thereby, while the slack of the glass ribbon 2 in the slack conveyance section T can be maintained, the above-mentioned tension can be prevented from propagating to the part of the glass ribbon 2 that is cutting the unnecessary portion 2b. Therefore, it is possible to prevent the quality of the cut end portion formed on the glass ribbon 2 from being deteriorated due to the division of the unnecessary portion 2b, and it is possible to prevent the glass ribbon 2 from being broken.
　吸着コンベア１２から搬出したガラスリボン２は、複数の搬送ローラー１３により下流側に送った後、下流端Ｐ２にて巻芯５の周りに巻き取っていく。このとき、吸着コンベア１２と下流端Ｐ２との相互間でガラスリボン２に張りを持たせていることにより、巻芯５に巻き付く際のガラスリボン２の進行方向が、本来進むべき方向に対して不当に傾くことを回避できる。そのため、製造されるガラスロール６の巻きズレを防止することが可能となる。巻芯５の周りに所望の長さのガラスリボン２の巻き取りが完了すると、ガラスロール６の製造が完了する。 (4) The glass ribbon 2 carried out from the suction conveyor 12 is sent downstream by the plurality of transport rollers 13 and then wound around the core 5 at the downstream end P2. At this time, since the glass ribbon 2 is provided with tension between the suction conveyor 12 and the downstream end P2, the traveling direction of the glass ribbon 2 when the glass ribbon 2 is wound around the core 5 is different from the direction in which the glass ribbon 2 should originally travel. Can be prevented from being unduly tilted. For this reason, it is possible to prevent the winding deviation of the manufactured glass roll 6. When the winding of the glass ribbon 2 having a desired length around the core 5 is completed, the production of the glass roll 6 is completed.
　以下、本発明の他の実施形態に係るガラスロールの製造方法について説明する。ここで、他の実施形態の説明では、上記の第一実施形態で説明済みの要素と実質的に同一の要素については、同一の符号を付すことで重複する説明を省略し、第一実施形態との相違点についてのみ説明する。 Hereinafter, a method of manufacturing a glass roll according to another embodiment of the present invention will be described. Here, in the description of the other embodiments, elements that are substantially the same as those described in the first embodiment will be denoted by the same reference numerals, and redundant description will be omitted. Only the differences from the above will be described.
＜第二実施形態＞
　図３に示すように、第二実施形態に係るガラスロールの製造方法が、上記の第一実施形態と相違している点は、吸着コンベア１２に代えてサクションローラー１８を配置し、サクションローラー１８の回転周部１８ａにより搬送部を構成している点である。本実施形態では、サクションローラー１８（回転周部１８ａ）が弛み制御手段として機能する。 <Second embodiment>
As shown in FIG. 3, the method of manufacturing the glass roll according to the second embodiment is different from the above-described first embodiment in that a suction roller 18 is disposed instead of the suction conveyor 12 and the suction roller 18 is provided. Is that a transport section is constituted by the rotating peripheral portion 18a. In the present embodiment, the suction roller 18 (rotary peripheral portion 18a) functions as a slack control unit.
　サクションローラー１８の回転周部１８ａには、当該サクションローラー１８の径方向に孔軸が延びる多数の吸着用孔（図示省略）が形成されている。また、サクションローラー１８の内部には、真空ポンプ等と接続された負圧発生機構（図示省略）が設けられている。この負圧発生機構が、吸着用孔を介してガラスリボン２に負圧を発生させることで、搬送面となるサクションローラー１８の外周面に対してガラスリボン２の下面２ｄを吸着により固定保持する。これにより、サクションローラー１８に吸着された状態のガラスリボン２は、回転周部１８ａの回転周速度と同一の搬送速度Ｖ１の下で、搬送経路の下流側に搬送されていく。 回 転 A large number of suction holes (not shown) whose hole axes extend in the radial direction of the suction roller 18 are formed in the rotating peripheral portion 18a of the suction roller 18. Further, a negative pressure generating mechanism (not shown) connected to a vacuum pump or the like is provided inside the suction roller 18. The negative pressure generating mechanism generates a negative pressure on the glass ribbon 2 via the suction holes, thereby holding the lower surface 2d of the glass ribbon 2 by suction with respect to the outer peripheral surface of the suction roller 18 serving as a transport surface. . As a result, the glass ribbon 2 sucked by the suction roller 18 is transported downstream of the transport path under the same transport speed V1 as the rotational peripheral speed of the rotating peripheral portion 18a.
＜第三実施形態＞
　図４に示すように、第三実施形態に係るガラスロールの製造方法が、上記の第一実施形態と相違している点は、吸着コンベア１２に代えてニップローラー１９を配置し、ニップローラー１９を構成する一対の挟持ローラー１９ａ，１９ａの各々の回転周部１９ａａにより搬送部を構成している点である。本実施形態では、一対の挟持ローラー１９ａ，１９ａ（回転周部１９ａａ）が弛み制御手段として機能する。 <Third embodiment>
As shown in FIG. 4, the method of manufacturing a glass roll according to the third embodiment is different from the above-described first embodiment in that a nip roller 19 is disposed instead of the suction conveyor 12 and the nip roller 19 is provided. Is that a transport section is constituted by the respective rotating peripheral portions 19aa of the pair of holding rollers 19a, 19a. In the present embodiment, the pair of nipping rollers 19a, 19a (rotating peripheral portion 19aa) function as slack control means.
　一対の挟持ローラー１９ａ，１９ａは、ガラスリボン２を厚み方向に挟持して固定保持することが可能である。これにより、両挟持ローラー１９ａ，１９ａにより挟持された状態のガラスリボン２は、両挟持ローラー１９ａ，１９ａの回転周部１９ａａにおける回転周速度と同一の搬送速度Ｖ１の下で、搬送経路の下流側に搬送されていく。 The pair of sandwiching rollers 19a, 19a can sandwich and hold the glass ribbon 2 in the thickness direction. As a result, the glass ribbon 2 sandwiched by the sandwiching rollers 19a, 19a moves downstream of the transport path under the same transport speed V1 as the rotational peripheral speed of the rotating peripheral portion 19aa of the sandwich rollers 19a, 19a. To be transported.
　ここで、本発明に係るガラスロールの製造方法は、上記の実施形態で説明した態様に限定されるものではない。例えば、上記の実施形態では、オーバーフローダウンドロー法により連続的に成形したガラスリボン２から不要部２ｂを分断した後、巻芯５の周りに巻き取ってガラスロール６を製造しているが、この限りではない。ロール・トゥ・ロールの形態を利用し、第一巻芯から連続的に巻き外したガラスリボンから不要部を分断した後、第二巻芯の周りに再び巻き取ってガラスロールを製造する場合にも本発明を適用することが可能である。 Here, the method for manufacturing a glass roll according to the present invention is not limited to the embodiment described in the above embodiment. For example, in the above embodiment, the glass roll 6 is manufactured by separating the unnecessary portion 2b from the glass ribbon 2 continuously formed by the overflow down draw method, and then winding it around the core 5. Not as long. In the case of using a roll-to-roll configuration to separate the unnecessary portion from the glass ribbon that has been continuously unwound from the first core, and then rewinding it around the second core to produce a glass roll, The present invention can also be applied to the present invention.
　また、上記の実施形態では、巻芯５の周りにガラスリボン２の上面２ｃ側を内側にして巻き取ると共に、下面２ｄ側から帯状保護シート４を供給しているが、この限りではない。巻芯の周りにガラスリボンの下面側を内側にして巻き取ると共に、上面側から帯状保護シートを供給するようにしてもよい。 In the above-described embodiment, the glass ribbon 2 is wound around the core 5 with the upper surface 2c side inside, and the belt-shaped protective sheet 4 is supplied from the lower surface 2d side. The glass ribbon may be wound around the core with the lower surface of the glass ribbon inside, and the belt-shaped protective sheet may be supplied from the upper surface.
　また、上記の第一実施形態では、吸着コンベア１２が、検出器１５が検出した相互間距離Ｄに応じて、相互間距離Ｄが一定となるようにベルト１２ａの送り速度Ｖ１を調節すると共に、駆動源１６と巻芯５との間のトルク伝達を、摩擦クラッチ１７を介して行うことで、一定のトルクで巻芯５を回転させているが、この限りではない。図示しない制御装置を設け、検出器１５が検出した相互間距離Ｄの信号を制御装置が受け取ることで、制御装置が吸着コンベア１２のベルト１２ａの回転速度と駆動源１６の回転速度を同時に制御しても良い。制御手段が搬送部の搬送速度とガラスリボンの巻き取り速度を同時に制御することで、一定の張力でのガラスリボンの巻き取りを継続してガラスロールを製造することができる。 In the above-described first embodiment, the suction conveyor 12 adjusts the feed speed V1 of the belt 12a according to the mutual distance D detected by the detector 15 so that the mutual distance D is constant. By transmitting the torque between the drive source 16 and the core 5 via the friction clutch 17, the core 5 is rotated with a constant torque, but this is not a limitation. By providing a control device (not shown), the control device receives the signal of the inter-distance D detected by the detector 15, and the control device simultaneously controls the rotation speed of the belt 12 a of the suction conveyor 12 and the rotation speed of the drive source 16. May be. When the control means simultaneously controls the transport speed of the transport unit and the winding speed of the glass ribbon, it is possible to manufacture the glass roll by continuing the winding of the glass ribbon with a constant tension.
　２　　　　　ガラスリボン
　２ｂ　　　　不要部
　２ｃ　　　　上面
　２ｄ　　　　下面
　５　　　　　巻芯
　６　　　　　ガラスロール
　１０　　　　帯状保護シート
　１２　　　　吸着コンベア
　１２ａ　　　ベルト
　１５　　　　検出器
　１６　　　　駆動源
　１６ａ　　　回転軸
　１７　　　　摩擦クラッチ
　１８　　　　サクションローラー
　１８ａ　　　回転周部
　Ｄ　　　　　相互間距離
　Ｔ　　　　　弛み搬送区間
　Ｐ２　　　　下流端
　Ｖ１　　　　搬送速度（送り速度） 2 Glass ribbon 2b Unnecessary part 2c Upper surface 2d Lower surface 5 Core 6 Glass roll 10 Belt-like protective sheet 12 Suction conveyor 12a Belt 15 Detector 16 Drive source 16a Rotary shaft 17 Friction clutch 18 Suction roller 18a Rotating peripheral part D Inter-distance T Slack Transport section P2 Downstream end V1 Transport speed (feed speed)

Claims (7)

  1. 　ガラスリボンを搬送経路に沿って搬送しつつ長手方向に切断することで該ガラスリボンから不要部を分断した後、該不要部が分断された前記ガラスリボンに前記搬送経路上の弛み搬送区間を弛ませた状態で通過させたのち、前記搬送経路の下流端で巻芯の周りに巻き取ってガラスロールを製造する方法であって、
    　前記搬送経路上における前記弛み搬送区間と前記下流端との相互間に、前記ガラスリボンを固定保持した状態で前記下流端側へ搬送する搬送部を設け、
    　前記搬送部は、前記ガラスリボンの搬送速度を調節することで、前記弛み搬送区間における前記ガラスリボンの弛み量を制御することを特徴とするガラスロールの製造方法。     Unnecessary portions are separated from the glass ribbon by cutting the glass ribbon in the longitudinal direction while being transported along the transport path, and then the slack transport section on the transport path is relaxed by the glass ribbon from which the unnecessary portions have been separated. A method of manufacturing a glass roll by passing around the core at the downstream end of the transport path after passing in a state in which the glass is rolled,
    Provided between the slack conveyance section and the downstream end on the conveyance path, a conveyance unit that conveys the glass ribbon to the downstream end in a state where the glass ribbon is fixed and held,
    The method of manufacturing a glass roll, wherein the transfer unit controls a slack amount of the glass ribbon in the slack transfer section by adjusting a transfer speed of the glass ribbon.
  2. 　検出手段による前記ガラスリボンの弛み量の検出と、検出結果に基づいた前記搬送部による前記ガラスリボンの搬送速度の調節とを実行するフィードバック制御を行うことを特徴とする請求項１に記載のガラスロールの製造方法。 2. The glass according to claim 1, wherein feedback control is performed to execute detection of the slack amount of the glass ribbon by a detection unit and adjustment of the transport speed of the glass ribbon by the transport unit based on the detection result. 3. Roll manufacturing method.
  3. 　前記搬送部が、吸着コンベアに備わったベルトであることを特徴とする請求項１又は２に記載のガラスロールの製造方法。 The method according to claim 1 or 2, wherein the transport unit is a belt provided on a suction conveyor.
  4. 　前記搬送部が、サクションローラーの回転周部であることを特徴とする請求項１又は２に記載のガラスロールの製造方法。 The method according to claim 1 or 2, wherein the transport unit is a rotation peripheral portion of a suction roller.
  5. 　前記ガラスリボンの表裏面のうち、非保証面となる面を前記搬送部に固定保持させることを特徴とする請求項１～４のいずれかに記載のガラスロールの製造方法。 (5) The method for manufacturing a glass roll according to any one of (1) to (4), wherein a surface serving as a non-guaranteed surface among the front and back surfaces of the glass ribbon is fixedly held by the transport unit.
  6. 　前記ガラスリボンを保護シート上に重ね合わせた状態で切断すると共に、
    　前記保護シートから分離させた状態の前記ガラスリボンに前記弛み搬送区間を通過させることを特徴とする請求項１～５のいずれかに記載のガラスロールの製造方法。     While cutting the glass ribbon in a state of being superimposed on the protective sheet,
    The method for producing a glass roll according to any one of claims 1 to 5, wherein the glass ribbon separated from the protective sheet is passed through the slack conveyance section.
  7. 　前記巻芯と、前記巻芯を回転させるための駆動源の回転軸との間におけるトルク伝達を、摩擦クラッチを介して行うことを特徴とする請求項１～６のいずれかに記載のガラスロールの製造方法。 The glass roll according to any one of claims 1 to 6, wherein torque transmission between the core and a rotation shaft of a drive source for rotating the core is performed via a friction clutch. Manufacturing method.
PCT/JP2019/022529 2018-06-22 2019-06-06 Glass roll manufacturing method WO2019244654A1 (en)

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JP2015182844A (en) * 2014-03-24 2015-10-22 日本ゼオン株式会社 Method and apparatus for manufacturing brittle film
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