TW202000611A - Glass roll manufacturing method - Google Patents

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

Glass roll manufacturing method

The present invention relates to a method of manufacturing a glass roll by winding a glass ribbon around the core after cutting the unnecessary portion by cutting the glass ribbon along the long side while cutting it. roll) method.

In recent years, the current situation is that mobile terminals such as smart phones or tablet personal computers (PCs), which are rapidly becoming popular, are seeking thinness and lightness. The requirements for change are constantly increasing. Under such circumstances, glass films that are glass substrates that are thinned into a film shape (for example, having a thickness of 300 μm or less) are developed and manufactured.

The manufacturing process of a glass film may include the process of winding the glass ribbon which becomes the source of a glass film in roll shape, and manufacturing a glass roll. Furthermore, Patent Document 1 discloses a specific example method for performing the above steps.

The method disclosed in the aforementioned document first continuously shapes the glass ribbon by an overflow down draw method. Then, the formed glass ribbon is transported and cut along the longitudinal direction. Along with the cutting, an unnecessary portion (an unnecessary portion including ears) located at both ends in the width direction of the glass ribbon is divided from an effective portion located in the center in the width direction (hereinafter, a portion that becomes a product). Finally, a glass roll is manufactured by winding a glass ribbon formed of only the effective portion around the core.

Here, in the method described above, when winding the glass ribbon, the glass ribbon is drawn around the winding core after passing through the slack transport section where the glass ribbon is slackly transported. Thereby, according to the method described above, it is possible to avoid the occurrence of undesirable conditions as described below.

It is assumed that when the glass ribbon is pulled in around the winding core without providing a slack transfer section, the tension acting on the winding portion is transmitted to the portion where the unnecessary portion is cut. Due to such a situation, the quality of the cut end portion formed by breaking (cutting) deteriorates, and the glass ribbon is easily broken. In this regard, since the method described above is provided with a slack transport section, it is possible to better avoid breakage of the glass ribbon. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2015-174744

[Problems to be solved by the invention] However, although the method disclosed in Patent Document 1 has the advantages described above, it also has the disadvantages described below.

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 of the winding core. However, when the winding speed is adjusted, the winding core repeats acceleration and deceleration, and it is difficult to continue winding the glass ribbon with a certain tension. As a result, the glass rolls produced are misaligned. Based on such a situation, it is expected to establish a technology that can realize both easy control of the slack amount of the glass ribbon and winding of the glass ribbon under a certain tension.

Furthermore, as the glass ribbon is wound, the winding diameter of the glass roll gradually increases. Therefore, in order to avoid increasing the rotation speed of the glass roll as the winding diameter increases, it is necessary to gradually decrease the rotation speed of the core. This situation makes it more difficult to control the amount of slack in the method.

The present invention has been completed in view of the above-mentioned circumstances, and its technical problem is to wind the glass ribbon around the winding core after the glass ribbon will not need to be partially broken and the divided glass ribbon passes through the slack transfer section In the manufacture of glass rolls, it is possible to easily control the amount of slack in the glass ribbon and wind the glass ribbon under a certain tension. [Means to solve the problem]

The present invention was created to solve the above-mentioned problems and is a method of manufacturing a glass roll. By cutting the glass ribbon along the conveying path and cutting it along the long side direction, no part of the glass is needed. After the tape is broken, after passing the glass ribbon that has not been broken through the slack conveying section on the conveying path in a slack state, it is wound around the winding core at the downstream end of the conveying path to manufacture a glass roll, in which Between the slack conveying section and the downstream end, a conveying section that conveys the glass ribbon toward the downstream end in a fixed state is provided. The conveying section controls the slack amount of the glass ribbon in the slack conveying section by adjusting the conveying speed of the glass ribbon .

In this method, between the slack transport section on the transport path and the downstream end, the transport unit transports the glass ribbon toward the downstream end side in a fixed state. According to this, the portion of the glass ribbon that is being conveyed by the conveyed portion (hereinafter, referred to as the portion being conveyed) is in a state of being fixedly held by the conveying portion. Therefore, by adjusting the conveying speed of the glass ribbon, the conveying section can easily control the amount of slack in the glass ribbon in the slack conveying section. In addition, since the conveying section controls the slack amount in this manner, it is not necessary to control the slack amount by adjusting the winding speed of the winding core, so that the winding speed can be constant. As a result, the glass ribbon can be manufactured by winding the glass ribbon with a constant tension. As can be seen from the above, according to this method, it is possible to easily control the amount of slack in the glass ribbon and wind the glass ribbon under a certain tension.

In the method described above, it is preferable to perform feedback control that performs the detection of the slack amount of the glass ribbon by the detection mechanism and the conveyance of the glass ribbon by the conveying section based on the detection result Adjustment of speed.

If so, the amount of relaxation of the glass ribbon can be appropriately controlled so that the amount of relaxation takes a predetermined target value or approaches a predetermined target value.

In the method described above, the conveying part may be a belt provided in the suction conveyor.

If so, the belt in the suction conveyor can be used to fix and hold the part in transit.

In the method described above, the conveying portion may be a rotating peripheral portion of a suction roller.

In this way, the part in the conveyance can be fixedly held by the circumferential portion of the suction roller.

In the method described above, it is preferable that the conveyance section fixes and holds the non-guaranteed surface of the front and back surfaces of the glass ribbon.

In this way, it is possible to avoid contamination of the guarantee surface of the glass ribbon due to contact with the transport portion when the glass ribbon is transported by the transport portion.

The method described above allows the glass ribbon to be cut while being superimposed on the protective sheet, while passing the glass ribbon in a state separated from the protective sheet through the slack transport section.

If so, by overlapping with the protective sheet, it is possible to avoid damage to the glass ribbon as much as possible. Furthermore, by passing the glass ribbon in a state separated from the protective sheet through the slack transport section, when the transport section fixes and holds the glass ribbon after passing through the section, it can be preferably fixed and held.

The method described above preferably transmits torque between the winding core and the rotating shaft of the drive source for rotating the winding core via a friction clutch.

In order to control the amount of slack, the conveying speed of the glass ribbon by the conveying section is appropriately changed to become faster or slower. Each time such a change in the conveying speed occurs, it is very complicated to control by changing the rotation speed of the rotating shaft of the drive source according to the change. On the other hand, if the torque transmission between the winding core and the rotating shaft of the drive source is performed via the friction clutch, the change in the transport speed of the glass ribbon by the transport section as described above can be responded to by slipping the friction clutch. [Effect of invention]

According to the present invention, when the glass ribbon is not required to be partially broken, and after the broken glass ribbon is passed through the slack transport section, the glass ribbon can be slacked when the glass ribbon is wound around the winding core to manufacture the glass roll Easy control and winding of the glass ribbon under a certain tension.

Hereinafter, a method of manufacturing a glass roll according to an embodiment of the present invention will be described with reference to the drawings.

<First embodiment> First, the structure of the manufacturing apparatus used for the manufacturing method of the glass roll of 1st Embodiment of this invention is demonstrated.

As shown in FIG. 1, the manufacturing apparatus 1 includes a breaking mechanism 3 that cuts the glass ribbon 2 along the longitudinal direction by cutting the cutting area P1 on the transport path while removing the portion 2b. (The part that is discarded without becoming a product) is cut off from the effective portion 2a of the glass ribbon 2 (hereinafter the part that becomes the product); and the winding mechanism 7, by cutting the glass ribbon 2 (only The glass ribbon 2 formed by the effective portion 2a is wound around the winding core 5 at a downstream end P2 of the conveying path in a state overlapping with the belt-shaped protective sheet 4 to produce a glass roll 6.

In the present manufacturing apparatus 1, the glass ribbon 2 continues to pass through the slack transport section T between the cut region P1 and the downstream end P2 on the transport path in a slack state downward.

Here, the glass ribbon 2 to be cut is glass that has been continuously formed by the overflow down-draw method, and then its transport direction is changed from vertically downward to horizontal. The glass ribbon 2 includes: an unnecessary portion 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 shaped to a thickness that can impart flexibility (for example, 300 μm or less). In the present embodiment, the upper surface 2c of the glass ribbon 2 is a guaranteed surface (a surface suitable for the subsequent film formation treatment or the like), and the lower surface 2d is a non-guaranteed surface. Furthermore, the forming method of the glass ribbon 2 is not limited to the overflow down-draw method, and may also be a float method, a slot down draw method, a redraw method, and the like.

The breaking mechanism 3 includes: a conveying device 8 for conveying the glass ribbon 2 in the cutting area P1; and a cutting device 9 for cutting the glass ribbon 2 being conveyed.

As the conveying device 8, a belt conveyor that conveys the glass ribbon 2 in a horizontal posture is used. Of course, it is not limited to this, and in addition to a belt conveyor, a roller conveyor (roller conveyor), etc. can also be used. In addition, the conveying device 8 may be constituted by a fixedly provided platen and a belt-shaped sheet sliding on the platen (for example, a belt-shaped protective sheet 10 described later).

The belt-shaped protective sheet 10 is supplied to the conveying surface of the conveying device 8 (here, the surface of the belt included in the belt conveyor). After the belt-shaped protective sheet 10 is conveyed to the downstream side in a state of being overlapped with the glass ribbon 2, it is separated from the glass ribbon 2 and pulled out below the conveying device 8 to be separated from the conveyance path of the glass ribbon 2 . Furthermore, as the belt-shaped protective sheet 10, for example, a foamed resin sheet can be used, and the lower surface 2d of the glass ribbon 2 conveyed on the conveying device 8 is protected by the belt-shaped protective sheet 10.

As the cutting device 9, a laser cutting machine arranged above the conveying device 8 is used. The laser cutting machine can irradiate the laser L along the boundary line passing through the effective portion 2a and the unnecessary portion 2b of the glass ribbon 2 under itself, and at the same time can spray the refrigerant C (for example , Misty water).

With the above-mentioned breaking mechanism 3, the glass ribbon 2 is continuously cut along the longitudinal direction by a laser cutting method, and the effective portion 2a and the unnecessary portion 2b are continuously broken. In addition to the laser cutting method, the laser fusing method can also be used to separate the effective portion 2a and the unnecessary portion 2b.

The unneeded portion 2b after the separation is separated downward from the conveyance path of the glass ribbon 2 (effective portion 2a), cut to a length suitable for disposal, and discarded. The cutting for the discarding is performed by bending the upper surface 2c side of the unnecessary portion 2b convexly and giving bending stress. In this embodiment, in order to easily cut the unnecessary portion 2b, each length suitable for discarding is given to the widthwise end of the unnecessary portion 2b from the upper surface 2c side by a scratch applying member (not shown) Scratches. With this, it is easy to cut (break) the unnecessary portion 2b starting from scratches. As the scratch application member, a diamond grindstone, a diamond chip, sandpaper, or the like can be used.

The winding mechanism 7 includes: a conveying device 11 that conveys the glass ribbon 2 in a horizontal posture; and a winding core 5 that winds the glass ribbon 2 carried out from the conveying device 11.

The conveying device 11 is arranged between the slack conveying section T and the downstream end P2 on the conveying path. The conveying device 11 includes an adsorption conveyor 12 and a plurality of conveying rollers 13.

The suction conveyor 12 includes a belt 12a as a conveying portion that conveys the glass ribbon 2 (effective portion 2a) toward the downstream end P2 side in a fixed state. The term "fixed holding" as used herein means that during the conveyance of the glass ribbon 2 by the suction conveyor 12, the belt 12a and the portion of the glass ribbon 2 during the conveyance do not move relatively. That is, it means that both the surface of the belt 12a and the lower surface 2d of the part being transported do not move relatively.

The belt 12a is formed with a plurality of suction holes (not shown) penetrating the belt 12a in the thickness direction. In addition, 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 negative pressure on the glass ribbon 2 through the suction hole, and fixes and holds the lower surface 2d of the glass ribbon 2 on the surface of the belt 12a that becomes the conveying surface by suction. As a result, the glass ribbon 2 in the state of being attracted to the belt 12a is continuously transported toward the downstream side of the transport path at the transport speed V1 that is the same as the feed speed V1 of the belt 12a. In addition, 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 width direction.

The plurality of conveying rollers 13 are free rollers aligned along the conveying path of the glass ribbon 2. Of course, part or all of the plurality of conveying rollers 13 may be driving rollers.

The winding core 5 can rotate about the axis center extending in the width direction of the glass ribbon 2 as a center. The winding core 5 winds the glass ribbon 2 continuously conveyed to the downstream end P2 of the conveying path by the conveying device 11 with the upper surface 2c side inside. Moreover, as shown by the arrow U, the winding core 5 can gradually move upwards while winding the glass ribbon 2. Thereby, even if the diameter of the glass roll 6 gradually expands as the winding progresses, the posture of the portion where the self-transporting roller 13 of the glass ribbon 2 is placed on the winding core 5 can be maintained horizontally.

The rotation speed of the winding core 5 is set as the rotation speed that the winding of the winding core 5 causes the portion of the glass ribbon 2 between the suction conveyor 12 and the downstream end P2 to have tension. In addition, as the diameter of the glass roll 6 gradually expands, the rotation speed of the winding core 5 gradually decreases. Thereby, regardless of the diameter of the glass roll 6, the rotation speed of the glass roll 6 is maintained constant.

The glass ribbon 2 which is continuously wound around the winding core 5 is supplied with the belt-shaped protective sheet 4 from the lower surface 2d side. As the belt-shaped protective sheet 4, for example, a resin sheet (polyethylene terephthalate (PET) film or the like) can be used. The belt-shaped protective sheet 4 is continuously pulled out from the sheet roll 14 arranged below as the winding core 5 rotates. Furthermore, the belt-shaped protective sheet 4 is continuously wound around the winding core 5 in a state with tension (a state in which tension acts).

In the slack transfer section T, above the transfer path of the glass ribbon 2, a detector 15 as a detection mechanism is arranged, and the detector 15 detects itself by interacting with the upper surface 2 c of the glass ribbon 2 (effective portion 2 a) The distance D is used to detect the amount of slack in the glass ribbon 2. 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 signal of the detection result. The suction conveyor 12 that has received the signal can adjust the feeding speed V1 of the belt 12a (the conveying speed V1 of the glass ribbon 2) so that the mutual distance D becomes constant (taking a predetermined target value). That is, the suction conveyor 12 (belt 12a) functions as a slack control mechanism that controls the slack amount of the glass ribbon 2 in the slack transfer section T by adjusting the transport speed V1 of the glass ribbon 2. In this way, in this embodiment, feedback control is performed, which performs detection of the slack amount by the detector 15 and adjustment of the conveying speed V1 based on the detection result.

Here, in the present embodiment, an ultrasonic displacement sensor is used as the detector 15 (detection mechanism), but it is not limited thereto. As the detector 15, a laser displacement sensor may be used instead of the ultrasonic displacement sensor. Among them, glass is a transparent body, and laser light is easily transmitted. Therefore, there is a case where the amount of slack in glass cannot be accurately detected by a laser displacement sensor, so an ultrasonic displacement sensor is preferred. In addition, as a method other than the displacement sensor, the amount of slack may be detected by photographing the glass of the slack transfer section T with a camera and performing image processing.

Specifically, the length of the mutual distance D is determined by the two speeds of the feed speed V1 of the suction conveyor 12 and the feed speed V2 of the transport device 8. Here, the feed speed V2 of the conveying device 8 is equal to the forming speed of the glass ribbon 2. By increasing or decreasing the feeding speed V1 of the suction conveyor 12 relative to the feeding speed V2, the amount of slack in the glass ribbon 2 downward is controlled, so that the mutual distance D becomes constant. The adjustment of the feed speed V1 is preferably performed in the range of 0.95×V2≦V1≦1.15×V2.

As shown in FIG. 2, torque transmission between the winding core 5 and the rotating shaft 16 a of the drive source 16 (for example, a motor or the like) for rotating the winding core 5 is performed via the friction clutch 17. The rotation speed of the rotating shaft 16a of the drive source 16 is higher than the rotation speed of the winding core 5. As a result, the friction clutch 17 slips due to the difference in rotational speed between the winding core 5 and the rotating shaft 16a of the drive source 16. Thereby, when the suction conveyor 12 functions as the slack control mechanism, even if the feed speed V1 of the suction conveyor 12 becomes faster or slower, the drive source 16 is connected to the friction clutch 17 so that the winding The core 5 rotates with a certain torque. In addition, as a method other than using the friction clutch 17, it is also possible to respond by adjusting the motor rotation torque of the drive source 16 (for example, torque control by a servo motor).

Next, a method of manufacturing a glass roll according to the first embodiment of the present invention using the manufacturing apparatus 1 described above, and its functions and effects will be described.

As shown in FIG. 1, if the shaped glass ribbon 2 is continuously transported to the cutting area P1 on the transport path, the glass ribbon 2 in the state of being overlapped with the belt-shaped protective sheet 10 on the transport device 8 is transferred The effective portion 2a and the unnecessary portion 2b are continuously cut off. The unnecessary part 2b after the breaking is discarded. The divided glass ribbon 2 (effective portion 2a) is carried out toward the downstream side from the conveying device 8, and after being separated from the belt-shaped protective sheet 10, it is transferred to the suction conveyor 12 through the slack conveying section T.

The suction conveyor 12 adjusts the feed speed V1 of the belt 12a based on the mutual distance D detected by the detector 15 so that the mutual distance D is constant. In this way, since the suction conveyor 12 adjusts the mutual distance D, it is possible to continue the winding of the glass ribbon 2 at a constant winding speed (constant tension) to manufacture the glass roll 6.

As a result, the suction conveyor 12 transports the glass ribbon 2 between the slack transport section T and the downstream end P2. The suction conveyor 12 conveys the glass ribbon 2 toward the downstream side in a fixed state. According to this, even if the glass ribbon 2 is tensioned between the suction conveyor 12 and the downstream end P2 (the tension acts), the tension can be prevented from crossing the portion of the glass ribbon 2 being transported by the suction conveyor 12 from the bottom The swim side passes toward the upstream side. Thereby, the slack of the glass ribbon 2 in the slack transfer section T can be maintained, and the tension described above can be prevented from being transmitted to the portion of the glass ribbon 2 where the unnecessary portion 2b is being cut. Therefore, it is possible to prevent the deterioration of the quality formed at the cut end portion of the glass ribbon 2 along with the breaking of the unnecessary portion 2b, and to prevent the glass ribbon 2 from breaking.

After the glass ribbon 2 carried out from the suction conveyor 12 is conveyed to the downstream side by the plurality of conveying rollers 13, it is continuously wound around the winding core 5 at the downstream end P2. At this time, by giving the glass ribbon 2 tension between the suction conveyor 12 and the downstream end P2, it is possible to avoid the glass ribbon 2 being wound around the winding core 5 from being improperly inclined with respect to the direction in which it should have been advanced . Therefore, the winding of the manufactured glass roll 6 can be prevented. When the winding of the glass ribbon 2 of a desired length is completed around the winding core 5, the manufacturing of the glass roll 6 is completed.

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, the elements that are substantially the same as those already explained in the first embodiment described above are given the same reference symbols to omit repeated explanations, and only the The difference between one embodiment will be described.

<Second embodiment> As shown in FIG. 3, the method of manufacturing the glass roll of the second embodiment is different from the first embodiment described above in that the suction roller 18 is provided instead of the suction conveyor 12, The rotation part 18a of the suction roller 18 constitutes a conveyance part. In this embodiment, the suction roller 18 (rotational periphery 18a) functions as a slack control mechanism.

A plurality of suction holes (not shown) with hole shafts extending in the diameter direction of the suction roller 18 are formed in the rotation peripheral portion 18 a of the suction roller 18. In addition, 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 through the suction hole, and fixes and holds the lower surface 2d of the glass ribbon 2 on the outer peripheral surface of the suction roller 18 that becomes the conveying surface by suction. As a result, the glass ribbon 2 attracted to the suction roller 18 is continuously transported toward the downstream side of the transport path at the transport speed V1 that is the same as the peripheral speed of the rotating peripheral portion 18a.

<Third Embodiment> As shown in FIG. 4, the method of manufacturing the glass roll of the third embodiment is different from the first embodiment described above in that it is a point in which a nip roller 19 is arranged instead of the suction conveyor 12. The conveyance section is constituted by a pair of nip rolls 19a and nip rolls 19a constituting the nip roll 19. In this embodiment, the pair of nip rollers 19a and the nip rollers 19a (rotational periphery 19aa) function as a slack control mechanism.

The pair of nip rollers 19a and 19a can fix and hold the glass ribbon 2 in the thickness direction. Thereby, the glass ribbon 2 clamped by the two pinch rollers 19a and the pinch roller 19a has a conveying speed V1 that is the same as the rotation peripheral speed of the rotation peripheral portion 19aa of the two pinch rollers 19a and the pinch roller 19a It is continuously transported toward the downstream side of the transport path.

Here, the manufacturing method of the glass roll of this invention is not limited to the aspect demonstrated in the above-mentioned embodiment. For example, in the above-mentioned embodiment, after the glass ribbon 2 continuously formed by the overflow down-drawing method divides the unnecessary portion 2b, it is wound around the winding core 5 to manufacture the glass roll 6, but Not limited to this. In a roll-to-roll configuration, after continuously unwinding the wound glass ribbon from the first roll core to break unnecessary parts, and winding it again around the second roll core to produce a glass roll, The present invention can also be applied.

In addition, in the above-mentioned embodiment, the upper surface 2c side of the glass ribbon 2 is wound around the core 5 and the belt-shaped protective sheet 4 is supplied from the lower surface 2d side, but it is not limited to this . The lower surface side of the glass ribbon may be wound around the winding core as the inner side, and the belt-shaped protective sheet may be supplied from the upper surface side.

In addition, in the first embodiment described above, the suction conveyor 12 adjusts the feed speed V1 of the belt 12 a based on the mutual distance D detected by the detector 15 so that the mutual distance D is constant, and performs via the friction clutch 17 The torque transmission between the drive source 16 and the winding core 5 thereby rotates the winding core 5 with a certain torque, but it is not limited thereto. A control device (not shown) may also be provided, and the control device receives the signal of the mutual distance D detected by the detector 15 to enable the control device to simultaneously control the rotation speed of the belt 12a of the suction conveyor 12 and the rotation of the drive source 16 speed. By controlling the transfer speed of the transfer section and the winding speed of the glass ribbon at the same time by the control mechanism, the glass ribbon can be manufactured by continuing the winding of the glass ribbon under a certain tension.

1‧‧‧ Manufacturing device 2‧‧‧glass ribbon 2a‧‧‧effective part 2b‧‧‧No need 2c‧‧‧upper surface 2d‧‧‧Lower surface 3‧‧‧Breaking mechanism 4, 10‧‧‧ Ribbon protective sheet 5‧‧‧roll core 6‧‧‧glass roll 7‧‧‧winding mechanism 8‧‧‧Conveying device 9‧‧‧cutting device 11‧‧‧Conveying device 12‧‧‧Adsorption conveyor 12a‧‧‧Belt 13‧‧‧Conveying roller 14‧‧‧ sheet roll 15‧‧‧detector 16‧‧‧Drive source 16a‧‧‧Rotation axis of drive source 17‧‧‧Friction clutch 18‧‧‧Suction roller 18a‧‧‧(attracting roller) 19‧‧‧Roll 19a‧‧‧nip roller 19aa‧‧‧(holding roller) C‧‧‧Refrigerant D‧‧‧ mutual distance L‧‧‧Laser P1‧‧‧cut off area P2‧‧‧ downstream T‧‧‧slack transfer section U‧‧‧arrow V1‧‧‧Conveying speed (feeding speed) V2‧‧‧Feeding speed of conveying device

FIG. 1 is a side view showing a method of manufacturing a glass roll according to a first embodiment of the present invention. Fig. 2 is a plan view showing a method of manufacturing a glass roll according to the first embodiment of the present invention. 3 is a side view showing a method of manufacturing a glass roll according to a second embodiment of the present invention. 4 is a side view showing a method of manufacturing a glass roll according to a third embodiment of the present invention.

1‧‧‧ Manufacturing device

2‧‧‧glass ribbon

2a‧‧‧effective part

2b‧‧‧No need

2c‧‧‧upper surface

2d‧‧‧Lower surface

3‧‧‧Breaking mechanism

4, 10‧‧‧ Ribbon protective sheet

5‧‧‧roll core

6‧‧‧glass roll

7‧‧‧winding mechanism

8‧‧‧Conveying device

9‧‧‧cutting device

11‧‧‧Conveying device

12‧‧‧Adsorption conveyor

12a‧‧‧Belt

13‧‧‧Conveying roller

14‧‧‧ sheet roll

15‧‧‧detector

C‧‧‧Refrigerant

D‧‧‧ mutual distance

L‧‧‧Laser

P1‧‧‧cut off area

P2‧‧‧ downstream

T‧‧‧slack transfer section

U‧‧‧arrow

V1‧‧‧Conveying speed (feeding speed)

V2‧‧‧Feeding speed of conveying device

Claims (7)

A method of manufacturing a glass roll, after the glass ribbon is transported along the transport path and cut along the long-side direction to separate unnecessary portions from the glass ribbon, the After a portion of the glass ribbon passes through the slack transport section on the transport path in a slack state, it is wound around the core at the downstream end of the transport path to manufacture a glass roll, and is characterized by: A transport section for transporting the glass ribbon toward the downstream end side in a fixed state is provided between the slack transport section and the downstream end on the transport path, The conveying section adjusts the conveying speed of the glass ribbon, thereby controlling the amount of slack of the glass ribbon in the slack conveying section. The method for manufacturing a glass roll as described in item 1 of the patent application scope, wherein feedback control is performed which performs the detection of the slack amount of the glass ribbon by the detection mechanism and the The conveying unit adjusts the conveying speed of the glass ribbon. The method for manufacturing a glass roll as described in claim 1 or claim 2, wherein the conveying section is a belt included in the suction conveyor. The method for manufacturing a glass roll as described in claim 1 or claim 2, wherein the conveying portion is a rotating peripheral portion of the suction roller. The method for manufacturing a glass roll according to any one of claims 1 to 4, wherein a surface that becomes a non-guaranteed surface on the front and back surfaces of the glass ribbon is fixedly held by the conveying section. The method for manufacturing a glass roll according to any one of claims 1 to 5, wherein the glass ribbon is cut while being superimposed on a protective sheet, At the same time, the glass ribbon separated from the protective sheet passes through the slack transport section. The method for manufacturing a glass roll according to any one of claims 1 to 6, wherein the winding core and the rotating shaft of the driving source for rotating the winding core are performed via a friction clutch Torque transmission.

Images