WO2013105415A1 - Method for manufacturing glass roll, device for manufacturing glass roll, and glass roll - Google Patents

Abstract

A manufacturing method for a glass roll includes an adjustment step for adjusting a winding position for a glass sheet (10). In this step, the position of a side end (11) of the glass sheet (10) is monitored with respect to the winding core (110). On the basis of these results, a resin film, paper or other adjusting sheet (20) is inserted between glass sheets (10) that are being wound. The distribution of the winding radius (R) for the glass sheet (10) in the axial direction of winding is adjusted by the thickness of the adjusting sheet (20) that is inserted. Therefore, the winding position of the glass sheet (10) wound around the winding core (110) is adjusted thereafter. A device (100) for manufacturing a glass roll has a position sensor (120) that monitors the position of a side end (11) of the glass sheet (10) with respect to the winding core (110) and an adjusting unit (130) that inserts adjusting sheets (20) between the glass sheets (10) being wound.

Description

Glass roll manufacturing method, glass roll manufacturing apparatus, and glass roll

The present invention relates to a glass roll manufacturing method, a glass roll manufacturing apparatus, and a glass roll.

The glass roll is manufactured by winding a glass sheet around a core. The glass roll is used, for example, for manufacturing a display panel such as a liquid crystal panel or an organic EL panel, a solar battery, or the like by a roll-to-roll method.

As another technique, a technique of moving the winding core in the axial direction of the winding core has been proposed in order to prevent a bamboo shoot-like winding slip when a resin sheet containing carbon fiber is wound around the winding core ( For example, see Patent Document 1).

JP 2008-247610 A

When controlling the winding position of the glass sheet, if the core is moved in the axial direction of the core when the glass sheet is wound around the core, shear stress is generated. Since the glass sheet is easier to break than the resin sheet, the glass sheet may be broken.

This invention is made | formed in view of the said subject, Comprising: It aims at provision of the glass roll manufacturing method which can control the winding position of a glass sheet, without breaking a glass sheet, a glass roll manufacturing apparatus, and a glass roll.

In order to solve the above problems, according to one aspect of the present invention, a glass roll manufacturing method for manufacturing a glass roll by winding a glass sheet around a core,
By monitoring the position of the side edge of the glass sheet with respect to the winding core and adjusting the distribution in the winding axis direction of the winding radius of the glass sheet based on the monitoring result, the winding around the winding core is performed thereafter. An adjustment step of adjusting the winding position of the glass sheet to be rotated;

Moreover, according to the other aspect of this invention, the glass roll manufacturing apparatus which winds a glass sheet to a core and manufactures a glass roll,
A position sensor for monitoring a side edge position of the glass sheet with respect to the core;
By adjusting the distribution in the winding axis direction of the winding radius of the glass sheet based on the monitoring result by the position sensor, the winding position of the glass sheet wound around the core is adjusted thereafter. And an adjustment unit.

Furthermore, according to another aspect of the present invention, a glass roll formed by winding a glass sheet into a roll shape,
The winding radius of at least a part of the glass sheet increases from one end side in the winding axis direction to the other end side.

According to the present invention, a glass roll manufacturing method, a glass roll manufacturing apparatus, and a glass roll that can control the winding position of the glass sheet without breaking the glass sheet are provided.

It is a side view of the glass roll manufacturing apparatus by 1st Embodiment. It is a top view of the glass roll manufacturing apparatus by a 1st embodiment. It is explanatory drawing of the glass roll manufacturing method by 1st Embodiment. It is a figure which shows an example of the time-dependent change of the side end position of a glass sheet. It is a figure which shows a mode when a strip | belt-shaped object is wound around the side surface of a truncated cone. It is a side view of the glass roll manufacturing apparatus by 2nd Embodiment. It is a top view of the glass roll manufacturing apparatus by 2nd Embodiment. It is explanatory drawing of the glass roll manufacturing method by 2nd Embodiment. It is a perspective view of the glass roll manufacturing apparatus by 3rd Embodiment. It is a figure which shows the member arrange | positioned between a support frame and a ball screw unit. It is explanatory drawing of the glass roll manufacturing method by 3rd Embodiment. It is a perspective view of the glass roll manufacturing apparatus by the 1st modification of 3rd Embodiment. It is a perspective view of the glass roll manufacturing apparatus by the 2nd modification of 3rd Embodiment. It is a side view which shows the support roll which supports the adjustment sheet | seat which moves toward a winding core from an adjustment core. It is a perspective view of the glass roll manufacturing apparatus by the 3rd modification of 3rd Embodiment. It is a perspective view of the glass roll manufacturing apparatus by 4th Embodiment. It is explanatory drawing of the glass roll manufacturing method by 4th Embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same or corresponding reference numerals, and description thereof is omitted. In each drawing, the adjustment sheet is shown in gray to make the drawing easy to see.

[First Embodiment]
FIG. 1 is a side view of the glass roll manufacturing apparatus according to the first embodiment. FIG. 2 is a plan view of the glass roll manufacturing apparatus according to the first embodiment. Drawing 3 is an explanatory view of the glass roll manufacturing method by a 1st embodiment, and is a sectional view showing the situation of the layer of the glass sheet formed on a core. FIG. 4 is a diagram illustrating an example of a temporal change in the side edge position of the glass sheet. 2 and 3, the Y direction is a direction parallel to the winding axis direction, and the winding axis direction is the axial direction of the winding core.

The glass roll manufacturing apparatus 100 winds the glass sheet 10 around the core 110 to manufacture a glass roll 190 (see FIG. 3). The core 110 may be pulled out from the glass roll 190 after the manufacture.

The glass sheet 10 may be wound around the core 110 so as to overlap with a slip sheet (interleaf) or a resin sheet in order to prevent scratches or the like from being generated during or after winding.

The glass of the glass sheet 10 is selected according to the application. For example, in the case of a glass substrate for a liquid crystal display, an alkali-free glass that does not substantially contain an alkali metal oxide is used. Depending on the application, general glass such as soda lime glass and quartz glass can be used.

The glass sheet 10 may be formed by a general method such as a float method, a fusion downdraw method, a slit downdraw method, or a redraw method.

The average thickness of the glass sheet 10 is preferably 0.3 mm or less. When the average thickness is 0.3 mm or less, the glass sheet 10 has good flexibility, so that bending stress generated when the glass sheet 10 is wound is reduced, and breakage of the glass sheet 10 is suppressed.

A functional film may be formed on the glass sheet 10. The functional film may be, for example, a conductive film, an insulating film, a protective film, and the like, and the material of the functional film is selected according to the type of the functional film. Examples of the functional film material include a metal material, an inorganic material, and an organic material. Examples of the method for forming the functional film include a sputtering method, a vacuum deposition method, a CVD method, and a method of applying a liquid material and drying.

The front end portion of the glass sheet 10 may be fixed to the winding core 110 with a double-sided tape or electrostatic force, or may be sandwiched and fixed between a slip sheet or a resin sheet and the winding core 110. The width direction of the glass sheet 10 and the axial direction of the core 110 are parallel.

The winding core 110 is connected to a winding motor 112. When the winding motor 112 rotates, the glass sheet 10 is wound around the core 110. The winding motor 112 may be a servo motor, and may be feedback controlled so that the winding tension of the glass sheet 10 becomes a predetermined amount.

When the core 110 winds up the glass sheet 10, the position of the side edges 11, 12 of the glass sheet 10 moves in an unintended direction with respect to the core 110 due to a diameter deviation, an axis deviation, vibration, or the like of the core 110. There is.

Therefore, the glass roll manufacturing apparatus 100 includes a position sensor 120 that monitors the position of the side end 11 of the glass sheet 10 with respect to the core 110, and an adjustment unit that adjusts the winding position of the core 110 based on the monitoring result of the position sensor 120. 130.

The position sensor 120 is fixed to a frame (not shown) that supports the core 110 so as to be rotatable about the central axis of the core 110. The position sensor 120 detects the position of the side end 11 of the glass sheet 10 that moves toward the core 110, for example. The position sensor 120 includes a light projecting unit 122 that projects a laser beam 121 parallel to the width direction of the glass sheet 10 and a light receiving unit 123 that is disposed to face the light projecting unit 122 (FIGS. 1 and 11). reference). The light receiving unit 123 includes a plurality of light receiving elements arranged in a direction parallel to the width direction of the glass sheet 10. When the side end 11 of the glass sheet 10 passes between the light projecting unit 122 and the light receiving unit 123, a position where the change in the amount of light received by the light receiving element becomes abrupt is detected, and the side end 11 of the glass sheet 10 is detected. Detect position.

Note that the configuration of the position sensor 120 may vary widely. For example, the position sensor 120 may be configured by an image sensor such as a CCD or a CMOS that images a glass sheet and an image processing unit that performs image processing on an image captured by the image sensor. The image processing unit includes a microcomputer including, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. The image processing unit performs image processing on the image picked up by the image pickup device, identifies a portion where the brightness of the image changes suddenly, and detects the position of the side edge 11 of the glass sheet 10. Moreover, the position sensor 120 may be comprised by the nozzle which injects gas, such as air, and the air volume sensor arrange | positioned facing a nozzle. When the side end 11 of the glass sheet 10 passes between the nozzle and the air volume sensor, the position sensor 120 detects the gas air volume with the air volume sensor and detects the side edge position of the glass sheet 10. Further, the position sensor 120 is a capacitance sensor that detects a capacitance according to a gap formed between the conductive film formed on the side edge 11 of the glass sheet 10 or a contact type linear gauge sensor. It may be configured. Furthermore, the position sensor 120 may detect the position of the side end 11 of the glass sheet 10 using ultrasonic waves.

The installation position of the position sensor 120 may be set upstream of the position where the glass sheet 10 and the adjustment sheet 20 overlap. Since it is not necessary to distinguish between the glass sheet 10 and the adjustment sheet 20, the position detection of the side edge 11 of the glass sheet 10 is easy, and the detection accuracy is improved.

The position sensor 120 of this embodiment monitors the position of the side end 11 of the glass sheet 10 that is moving toward the core 110, but the outermost layer of the glass sheet 10 that is wound around the core 110. You may detect the position of the side edge.

The adjusting unit 130 adjusts the distribution in the winding axis direction of the winding radius R of the glass sheet 10 based on the monitoring result by the position sensor 120, and then the glass sheet wound around the core 110. 10 winding position is adjusted. The distribution of the winding radius R of the glass sheet 10 in the winding axis direction is measured along the width direction of the glass sheet 10.

The adjustment of the distribution of the winding radius R of the glass sheet 10 in the winding axis direction is, for example, at least one of the insertion position of the adjustment sheet 20 inserted between the glass sheets 10 and the size and shape of the adjustment sheet 20. Done by adjusting.

The adjusting unit 130 of the present embodiment adjusts the distribution of the winding radius R of the glass sheet 10 in the winding axis direction by adjusting the insertion position of the adjusting sheet 20 narrower than the glass sheet 10. As the adjustment sheet 20, a resin film, paper, or the like is used. When the adjustment sheet 20 is wound around the core 110 together with the glass sheet 10, the adjustment sheet 20 may be disposed radially inward of the core 110 relative to the glass sheet 10. Since the adjustment sheets 21 and 22 are wound around the winding core and the distribution of the winding radius R of the glass sheet 10 in the winding axis direction is changed, the responsiveness is good.

The adjustment unit 130 includes an adjustment core 131 around which the adjustment sheet 20 is wound, an adjustment motor 133 that rotates the adjustment core 131 around the central axis of the adjustment core 131, and an adjustment sheet that is sent from the adjustment core 131 by the adjustment motor 133. And a cutting machine 135 for cutting 20.

The adjustment core 131 is disposed above the movement path of the glass sheet 10 moving toward the winding core 110, and a plurality (for example, two) of adjustment cores 131 are arranged in a direction parallel to the width direction of the glass sheet 10.

The adjustment motor 133 rotates the adjustment core 131. A plurality of adjustment motors 133 are provided corresponding to the plurality of adjustment cores 131. When the adjustment motor 133 rotates, the corresponding adjustment core 131 rotates, and the adjustment sheet 20 is sent out from the adjustment core 131. The adjustment motor 133 may be a servo motor and is feedback-controlled so that the feeding speed of the adjustment sheet 20 is the same as the moving speed of the glass sheet 10.

The cutting machine 135 includes, for example, a slide 137 that guides the adjustment sheet 20 fed from the adjustment core 131 by the adjustment motor 133 toward a position where the adjustment sheet 20 overlaps the glass sheet 10, and a cutting roll that cuts the adjustment sheet 20 supported by the slide 137. 139 and a cutting motor 141 that rotates the cutting roll 139. A plurality of cutting machines 135 are installed corresponding to the plurality of adjustment cores 131.

The slide 137 guides the adjustment sheet 20 obliquely downward. The adjustment sheet 20 slides down from the slide 137 and is then placed on the glass sheet 10, transported toward the core 110 together with the glass sheet 10, and between the glass sheet layers formed on the core 110. Inserted. When the adjustment sheet 20 is conveyed toward the core 110, the adjustment sheet 20 is attached to the glass sheet 10 by electrostatic force or frictional force.

The cutting roll 139 is disposed near the lower end of the slide 137. When the cutting motor 141 rotates and the cutting roll 139 rotates, the adjustment sheet 20 supported by the slide 137 is cut at a predetermined length.

The control unit 180 includes a microcomputer including a CPU, a RAM, a ROM, and the like. By causing the CPU to execute a program stored in the ROM or the like, various driving units (for example, a winding motor 112, an adjustment motor 133, a cutting motor) The motor 141) is controlled.

Next, the operation (glass roll manufacturing method) of the glass roll manufacturing apparatus having the above configuration will be described. Various operations of the glass roll manufacturing apparatus 100 are performed under the control of the control unit 180.

The control unit 180 drives the winding motor 112 at time t0 shown in FIG. 4 to rotate the winding core 110 to which the front end portion of the glass sheet 10 is fixed, and winds the glass sheet 10 around the winding core 110. At time t0, the adjustment motor 133 and the cutting motor 141 are stopped. For example, the control unit 180 starts monitoring by the position sensor 120 at time t0.

When the control unit 180 detects that the position of the side end 11 of the glass sheet 10 has moved from the reference position Y0 in the Y1 direction beyond the set value ΔY1 at time t1 shown in FIG. 4, the control unit 180 controls the Y2 side adjustment motor 133. Driven to feed out the adjustment sheet 20 wound around the adjustment core 131 on the Y2 side. The adjustment sheet 20 slides down on the Y2 side slide 137 and is placed on the end of the glass sheet 10 on the Y2 side, and is then transported toward the core 110 together with the glass sheet 10 to form a roll-shaped glass sheet 10. It is inserted between each other. Thereby, as shown to Fig.3 (a), the winding radius R of the glass sheet 10 becomes large, so that it goes to a Y2 direction from the Y1 side.

FIG. 5 is a diagram showing a state when a band-like object is wound around the side surface of the truncated cone. When the strip 30 is wound around the side surface 41 of the truncated cone 40 while being in surface contact, the strip 30 is wound spirally. At this time, the strip 30 naturally moves in the direction in which the radius of the side surface 41 of the truncated cone 40 increases.

In the present embodiment, since the winding radius R of the glass sheet 10 increases from the Y1 side in the Y2 direction, the glass sheet 10 is subsequently wound around the core 110 as shown in FIG. Is wound in the Y2 direction.

When the control unit 180 detects that the distance between the position of the side edge 11 of the glass sheet 10 and the reference position Y0 has returned to the set value ΔY1 or less at time t2 shown in FIG. 4, the Y2 side adjustment motor The driving of 133 is stopped and the cutting motor 141 on the Y2 side is driven to cut the adjustment sheet 20 on the Y2 side.

When the control unit 180 detects that the position of the side end 11 of the glass sheet 10 has moved from the reference position Y0 in the Y2 direction beyond the set value ΔY2 at time t3 shown in FIG. 4, the control unit 180 moves the adjustment motor 133 on the Y1 side. Driven to feed out the adjustment sheet 20 wound around the adjustment core 131 on the Y1 side. The adjustment sheet 20 slides down on the Y1 side slide 137 and is placed on the Y1 side end of the glass sheet 10, and is then conveyed toward the core 110 together with the glass sheet 10, and the roll-shaped glass sheet 10. It is inserted between each other. Thereby, as shown in FIG.3 (c), the winding radius R of the glass sheet 10 becomes large as it goes to the Y1 direction from the Y2 side. Therefore, as shown in FIG.3 (d), the winding position of the glass sheet 10 wound around the core 110 after that shifts to the Y1 direction.

In this way, the control unit 180 controls the winding position of the glass sheet 10. Since this control is performed by adjusting the shape of the surface around which the glass sheet 10 is wound, almost no shear stress is applied to the glass sheet 10 and the glass sheet 10 is hardly broken. Therefore, a high quality glass roll 190 is obtained. An adjustment sheet 20 narrower than the glass sheet 10 is inserted into the glass roll 190.

In addition, although the adjustment part of this embodiment contains the some adjustment core 131 arranged in the direction parallel to the width direction of the glass sheet 10, the number of the adjustment cores 131 may be one. In this case, the adjustment unit adjusts the insertion position of the adjustment sheet 20 in the Y direction by moving the adjustment core 131 in the Y direction with respect to the winding core 110.

[Second Embodiment]
In the first embodiment, the strip-shaped adjustment sheet 20 is inserted at the end in the width direction of the glass sheet 10 for the purpose of adjusting the distribution of the winding radius R of the glass sheet 10 in the winding axis direction.

In contrast, the present embodiment is different in that the insertion positions of a plurality of types of adjustment sheets having different dimensions and shapes are adjusted for the same purpose. Hereinafter, the difference will be mainly described.

FIG. 6 is a side view of the glass roll manufacturing apparatus according to the second embodiment. FIG. 7 is a plan view of the glass roll manufacturing apparatus according to the second embodiment. FIG. 8 is an explanatory view of the glass roll manufacturing method according to the second embodiment, and is a cross-sectional view showing the state of the glass sheet layer formed on the core.

The glass roll manufacturing apparatus 200 of this embodiment includes a core 110, a position sensor 120, an adjustment unit 230, and a control unit 280.

The adjustment unit 230 adjusts the distribution in the winding axis direction (Y direction) of the winding radius R of the glass sheet 10 based on the monitoring result by the position sensor 120, and then winds around the core 110. The winding position of the glass sheet 10 to be adjusted is adjusted.

The adjusting unit 230 of the present embodiment adjusts the distribution of the winding radius R of the glass sheet 10 in the winding axis direction by adjusting the insertion positions of the plurality of types of adjusting sheets 21 and 22 having different dimensions and shapes. As the adjustment sheets 21 and 22, a resin film or paper is used. The adjustment sheets 21 and 22 may be wider than the glass sheet 10. There are few gaps formed between the glass sheets 10, and the glass sheet 10 can be stably supported.

The thickness of the one adjustment sheet 21 increases as it goes from one end side to the other end side in the width direction of the adjustment sheet 21 (as it goes from the Y1 side to the Y2 direction). The remaining adjustment sheet 22 becomes thicker from the other end side to the one end side along the width direction of the adjustment sheet 22 (as it goes from the Y2 side to the Y1 direction).

When the adjustment sheets 21 and 22 are wound around the core 110 together with the glass sheet 10, the adjustment sheets 21 and 22 may be arranged radially inward of the core 110 than the glass sheet 10. Since the adjustment sheets 21 and 22 are wound around the winding core 110 and the distribution of the winding radius R of the glass sheet 10 in the winding axis direction is changed, the responsiveness is good.

The adjustment unit 230 includes adjustment cores 231 and 232 around which the adjustment sheets 21 and 22 are wound, adjustment motors 233 and 234 that rotate the adjustment cores 231 and 232 about the central axes of the adjustment cores 231 and 232, and adjustment motors And cutting machines 235 and 236 for cutting the adjustment sheets 21 and 22 sent out from the adjustment cores 231 and 232 by 233 and 234, respectively.

The adjustment cores 231 and 232 are disposed above the movement path of the glass sheet 10 that moves toward the winding core 110 and are aligned along the movement path of the glass sheet 10.

Adjustment motors 233 and 234 rotate the adjustment cores 231 and 232. When the adjustment motors 233 and 234 rotate, the adjustment cores 231 and 232 rotate, and the adjustment sheets 21 and 22 are sent out from the adjustment cores 231 and 232. The adjustment motors 233 and 234 may be servo motors, and are feedback-controlled so that the feeding speed of the adjustment sheets 21 and 22 is the same as the moving speed of the glass sheet 10.

The cutting machines 235 and 236 cut the adjustment sheets 21 and 22 supported by the slides 237 and 238 and the slides 237 and 238 that guide the adjustment sheets 21 and 22 sent out from the adjustment cores 231 and 232 obliquely downward. It comprises rolls 239 and 240 and cutting motors 241 and 242 for rotating the cutting rolls 239 and 240.

The slides 237 and 238 guide the adjustment sheets 21 and 22 toward the position where they overlap the glass sheet 10. The adjustment sheets 21 and 22 slide on the slides 237 and 238, and are then placed on the glass sheet 10 and conveyed toward the core 110 together with the glass sheet 10, and are formed on the core 110. It is inserted between each other.

The cutting rolls 239 and 240 are disposed in the vicinity of the lower ends of the slides 237 and 238. When the cutting motors 241 and 242 rotate and the cutting rolls 239 and 240 rotate, the adjustment sheets 21 and 22 are cut by the blades of the cutting rolls 239 and 240.

The control unit 280 includes a microcomputer including a CPU, a RAM, a ROM, and the like. By causing the CPU to execute a program stored in the ROM or the like, various drive units (for example, the winding motor 112, the adjustment motors 233, 234). The cutting motors 241 and 242) are controlled.

Next, the operation (glass roll manufacturing method) of the glass roll manufacturing apparatus 200 having the above configuration will be described. Various operations of the glass roll manufacturing apparatus 200 are performed under the control of the control unit 280.

The control unit 280 drives the winding motor 112 at time t0 shown in FIG. 4 to rotate the winding core 110 to which the front end portion of the glass sheet 10 is fixed, and winds the glass sheet 10 around the winding core 110. At time t0, the adjustment motors 233 and 234 and the cutting motors 241 and 242 are stopped. For example, the control unit 280 starts monitoring by the position sensor 120 at time t0.

When the controller 280 detects that the position of the side edge 11 of the glass sheet 10 has moved from the reference position Y0 in the Y1 direction beyond the set value ΔY1 at time t1 shown in FIG. 4, the controller 280 drives the adjustment motor 233. The adjustment sheet 21 whose thickness increases from the Y1 side in the Y2 direction is sent out from the adjustment core 231. The adjustment sheet 21 sent out from the adjustment core 231 slides down on the slide 237 and is placed on the glass sheet 10, and then conveyed toward the core 110 together with the glass sheet 10, and is formed on the core 110. Inserted between the glass sheet layers. Then, as shown in FIG. 8A, the winding radius R of the glass sheet 10 increases from the Y1 side in the Y2 direction, so that the winding around the core 110 is thereafter performed as shown in FIG. 8B. The winding position of the rotated glass sheet 10 is shifted in the Y2 direction.

When the control unit 280 detects that the distance between the position of the side end 11 of the glass sheet 10 and the reference position Y0 has returned to the set value ΔY1 or less at time t2 shown in FIG. 4, the controller 280 drives the adjustment motor 233. And the cutting motor 241 is driven to cut the adjustment sheet 21.

When the control unit 280 detects that the position of the side edge 11 of the glass sheet 10 has moved from the reference position Y0 in the Y2 direction beyond the set value ΔY2 at time t3 shown in FIG. 4, the control unit 280 drives the adjustment motor 234. The adjustment sheet 22 whose thickness increases from the Y2 side toward the Y1 direction is sent out from the adjustment core 232. The adjustment sheet 22 sent out from the adjustment core 232 slides down on the slide 238 and is placed on the glass sheet 10, and then conveyed toward the core 110 together with the glass sheet 10, and formed on the core 110. Inserted between the glass sheet layers. Then, as shown in FIG. 3C, the winding radius R of the glass sheet 10 increases from the Y2 side toward the Y1 direction. Therefore, as shown in FIG.3 (d), the winding position of the glass sheet 10 wound around the core 110 after that shifts to the Y1 direction.

In this way, the control unit 280 controls the winding position of the glass sheet 10. Since this control is performed by adjusting the shape of the surface around which the glass sheet 10 is wound as in the first embodiment, almost no shear stress is applied to the glass sheet 10 and the glass sheet 10 is difficult to break. Therefore, the glass roll 290 with good quality is obtained. Inside the glass roll 290, adjustment sheets 21 and 22 that are thicker from one end side to the other end side along the width direction are inserted.

[Third Embodiment]
In the first and second embodiments, the insertion position of the adjustment sheet is adjusted for the purpose of adjusting the distribution of the winding radius R of the glass sheet 10 in the winding axis direction.

In contrast, the present embodiment is different in that the size and shape of the adjustment sheet continuously wound around the core 110 are adjusted for the same purpose. Hereinafter, the difference will be mainly described.

FIG. 9A is a perspective view of a glass roll manufacturing apparatus according to the third embodiment. In FIG. 9A, illustration of a winding motor, an adjustment core, an adjustment motor for rotating the adjustment core, and a position sensor is omitted for convenience. FIG. 9B is a diagram illustrating members disposed between the support frame and the ball screw unit. 9B shows a state when the central axis of the nip roll is inclined with respect to the central axis of the winding core, FIG. 9B (1) is a plan view, and FIG. 9B (2) is a side view. FIG. 10 is an explanatory view of the glass roll manufacturing method according to the third embodiment, and is a cross-sectional view showing the state of the glass sheet layer formed on the core.

The glass roll manufacturing apparatus 300 of this embodiment includes a core 110, a position sensor 120, an adjustment unit 330, and a control unit 380.

The adjusting unit 330 adjusts the distribution in the winding axis direction of the winding radius R of the glass sheet 10 based on the monitoring result by the position sensor 120. This adjustment is performed by adjusting the distribution in the width direction of the thickness of the adjustment sheet 25 that is continuously wound around the core 110 together with the glass sheet 10.

The adjustment unit 330 adjusts the width direction distribution of the winding tension of the adjustment sheet 25 in order to adjust the width direction distribution of the thickness of the adjustment sheet 25. As the adjustment sheet 25, a resin film or paper is used. The adjustment sheet 25 may be wider than the glass sheet 10. There are few gaps formed between the glass sheets 10, and the glass sheet 10 can be stably supported. The front end portion of the glass sheet 10 may be fixed to the winding core 110 with a double-sided tape or electrostatic force, or may be fixed by being sandwiched between a slip sheet or a resin sheet and the winding core 110. The front end portion of the adjustment sheet 25 may be fixed to the winding core 110 with a double-sided tape, electrostatic force, or the like, or may be fixed between a slip sheet or a resin sheet and the winding core 110.

The adjustment unit 330 rotates one of the adjustment core around which the adjustment sheet 25 is wound, the two nip rolls 333 and 334 that sandwich the adjustment sheet 25 that moves from the adjustment core toward the winding core 110, and the nip rolls 333 and 334. A rotating motor 335 to be operated. When the rotation motor 335 rotates one nip roll 333, the adjustment sheet 25 sandwiched between the nip rolls 333 and 334 is sent toward the core 110, and the other nip roll 334 rotates.

The adjustment core passively rotates as the nip rolls 333 and 334 rotate, and sends the adjustment sheet 25 toward the nip rolls 333 and 334. The thickness of the adjustment sheet 25 before passing through the nip rolls 333 and 334 may be uniform in the width direction of the adjustment sheet 25. The central axis of the adjustment core is parallel to the central axis of the winding core 110.

The nip rolls 333 and 334 sandwich and support the adjustment sheet 25 sent out from the adjustment core. The nip rolls 333 and 334 sandwich the adjustment sheet 25 with the pressure of the fluid pressure cylinders 336 and 337, for example.

The nip rolls 333 and 334 are disposed below the moving path of the glass sheet 10. Therefore, the movement path of the adjustment sheet 25 is arranged below the movement path of the glass sheet 10. The nip rolls 333 and 334 may be disposed above the movement path of the glass sheet 10.

The central axes of the nip rolls 333 and 334 are parallel to the central axis of the core 110 and can be inclined with respect to the central axis of the core 110.

The rotary motor 335 is controlled so that a predetermined winding tension is applied to the adjustment sheet 25 fed from the nip rolls 333 and 334 toward the core 110. This control is performed by the control unit 380.

The adjustment unit 330 further includes a support frame 340 that rotatably supports the nip rolls 333 and 334 around the center axis of the nip rolls 333 and 334, and a swing motor 343 that swings the support frame 340.

The support frame 340 supports the nip rolls 333 and 334 rotatably. A rotation motor 335 and fluid pressure cylinders 336 and 337 are fixed to the support frame 340. The support frame 340 can swing along an arcuate frame guide 342.

The swing motor 343 swings the support frame 340. Between the swing motor 343 and the support frame 340, a ball screw unit 344 that converts the rotational motion of the swing motor 343 into a linear motion is disposed. The ball screw unit 344 includes a screw shaft 345 that rotates together with the swing motor 343 and a movable body 346 that includes a screw hole into which the screw shaft 345 is screwed. As shown in FIG. 9B, the movable body 346 and the support frame 340 are fixed to the support frame 340 and a block 347 that is rotatably connected to the movable body 346 by a pin joint or the like. A block guide 348 is provided. The block guide 348 guides the block 347 along the longitudinal direction of the support frame 340.

When the swing motor 343 rotates, the screw shaft 345 rotates, and the movable body 346 and the block 347 move in the axial direction of the screw shaft 345. At this time, the block 347 rotates with respect to the movable body 346 and moves along the block guide 348, and the support frame 340 swings along the arcuate frame guide 342. Accordingly, the central axes of the nip rolls 333 and 334 are inclined with respect to the central axis of the winding core 110.

The rotational force of the swing motor 343 applies a force in a direction approaching the core 110 to one axial end of the nip rolls 333 and 334 and moves away from the core 110 to the other axial end of the nip rolls 333 and 334. Give direction force. Therefore, the winding tension of the adjustment sheet 25 increases as the distance from one end side (for example, Y2 side) to the other end side (for example, Y1 side) of the adjustment sheet 25 increases, and the adjustment sheet 25 increases in elongation. The thickness of 25 is reduced. The elongation of the adjustment sheet 25 may be elastic deformation or plastic deformation.

The control unit 380 includes a microcomputer including a CPU, a RAM, a ROM, and the like. By causing the CPU to execute a program stored in the ROM or the like, various drive units (for example, a winding motor 112, a rotation motor 335, a fluid, and the like) The pressure cylinders 336 and 337 and the swing motor 343) are controlled.

Next, the operation (glass roll manufacturing method) of the glass roll manufacturing apparatus 300 having the above configuration will be described. Various operations of the glass roll manufacturing apparatus 300 are performed under the control of the control unit 380.

The control unit 380 drives the winding motor 112 at time t0 shown in FIG. 4 to rotate the core 110 to which the front end of the glass sheet 10 and the front end of the adjustment sheet 25 are fixed. The glass sheet 10 and the adjustment sheet 25 are wound up. At this time, the control unit 380 drives the fluid pressure cylinders 336 and 337, sandwiches the adjustment sheet 25 with the nip rolls 333 and 334, and sends the adjustment sheet 25 toward the core 110. At time t0, the center axes of the nip rolls 333 and 334 are parallel to the center axis of the winding core 110, and the swing motor 343 is stopped. For example, the control unit 380 starts monitoring by the position sensor 120 at time t0.

When the controller 380 detects that the position of the side edge 11 of the glass sheet 10 has moved from the reference position Y0 in the Y1 direction beyond the set value ΔY1 at time t1 shown in FIG. 4, the controller 380 drives the swing motor 343. The winding tension of the adjustment sheet 25 is reduced as it goes from the Y1 side to the Y2 direction. Thereby, there is little elongation of the adjustment sheet 25 and the thickness of the adjustment sheet 25 becomes thick, so that it goes to the Y2 direction from the Y1 side. Therefore, since the winding radius R of the glass sheet 10 increases from the Y1 side in the Y2 direction as shown in FIG. 10A, the winding around the core 110 is thereafter performed as shown in FIG. 10B. The winding position of the rotated glass sheet 10 is shifted in the Y2 direction.

When the control unit 380 detects that the distance between the position of the side end 11 of the glass sheet 10 and the reference position Y0 has returned to the set value ΔY1 or less at time t2 shown in FIG. 4, the control unit 380 moves the support frame 340 to the original position. The driving of the swing motor 343 is stopped.

Thereafter, when the control unit 380 detects that the position of the side end 11 of the glass sheet 10 has moved from the reference position Y0 in the Y2 direction beyond the set value ΔY2 at time t3 shown in FIG. 4, the control unit 380 drives the swing motor 343. And the winding tension | tensile_strength of the adjustment sheet | seat 25 is made small so that it goes to the Y1 direction from the Y2 side. Thereby, there is little elongation of the adjustment sheet 25 and the thickness of the adjustment sheet 25 becomes thick, so that it goes to the Y1 direction from the Y2 side. Therefore, as shown in FIG. 10C, the winding radius R of the glass sheet 10 increases from the Y2 side in the Y1 direction, so that the winding around the core 110 is thereafter performed as shown in FIG. The winding position of the glass sheet 10 to be rotated is shifted in the Y1 direction.

In this way, the control unit 380 controls the winding position of the glass sheet 10. Since this control is performed by adjusting the shape of the surface around which the glass sheet 10 is wound as in the first embodiment, almost no shear stress is applied to the glass sheet 10 and the glass sheet 10 is difficult to break. Therefore, a high quality glass roll 390 is obtained. The adjustment sheet 25 is inserted into the glass roll 390, and at least a part of the adjustment sheet 25 increases in thickness from one end side to the other end side in the width direction.

In addition, when the adjustment sheet 25 of this embodiment is wound around the core 110 together with the glass sheet 10, the adjustment sheet 25 is arranged on the outer side in the radial direction of the core 110 than the glass sheet 10. 110 may be arranged inward in the radial direction, or may be arranged on both sides.

[First Modification of Third Embodiment]
In the third embodiment, the central axis of the nip rolls 333 and 334 is set to the central axis of the core 110 for the purpose of adjusting the width direction distribution of the thickness of the adjustment sheet 25 continuously wound around the core 110. Rock.

On the other hand, this modification is different in that the central axis of the adjustment sheet 25 is swung with respect to the central axis of the core 110 for the same purpose. Hereinafter, the difference will be mainly described.

FIG. 11 is a perspective view of a glass roll manufacturing apparatus according to a first modification of the third embodiment.

The glass roll manufacturing apparatus 300A of the present embodiment includes a core 110, a position sensor 120, an adjustment unit 330A, and a control unit 380A.

The adjusting unit 330A adjusts the distribution in the winding axis direction of the winding radius R of the glass sheet 10 based on the monitoring result by the position sensor 120. This adjustment is performed by adjusting the distribution in the width direction of the thickness of the adjustment sheet 25 that is continuously wound around the core 110 together with the glass sheet 10.

The adjusting unit 330A adjusts the widthwise distribution of the winding tension of the adjusting sheet 25 in order to adjust the widthwise distribution of the thickness of the adjusting sheet 25. As the adjustment sheet 25, a resin film or paper is used. The adjustment sheet 25 may be wider than the glass sheet 10. The front end portion of the glass sheet 10 may be fixed to the winding core 110 with a double-sided tape or electrostatic force, or may be fixed by being sandwiched between a slip sheet or a resin sheet and the winding core 110. The front end portion of the adjustment sheet 25 may be fixed to the winding core 110 with a double-sided tape, electrostatic force, or the like, or may be fixed between a slip sheet or a resin sheet and the winding core 110.

The adjustment unit 330A includes an adjustment core 331A around which the adjustment sheet 25 is wound, and an adjustment motor 341A that rotates the adjustment core 331A around the central axis of the adjustment core 331A.

The adjustment core 331 </ b> A is rotated by the adjustment motor 341 </ b> A and sends the adjustment sheet 25 toward the winding core 110. The thickness of the adjustment sheet 25 before being sent out from the adjustment core 331A may be uniform in the width direction.

The central axis of the adjustment core 331A is parallel to the central axis of the winding core 110 and can be inclined with respect to the central axis of the winding core 110.

The adjustment unit 330A further includes a support frame 340A that rotatably supports the adjustment core 331A about the central axis of the adjustment core 331A, and a swing motor 343A that swings the support frame 340A.

The support frame 340A rotatably supports the adjustment core 331A. An adjustment motor 341A is fixed to the support frame 340A. The support frame 340A can swing along an arcuate frame guide 342A.

The swing motor 343A swings the support frame 340A. Between the swing motor 343A and the support frame 340A, a ball screw unit 344A that converts the rotational motion of the swing motor 343A into a linear motion is disposed. The ball screw unit 344A includes a screw shaft 345A that rotates together with the swing motor 343A, and a movable body 346A that includes a screw hole into which the screw shaft 345A is screwed. A block 347 and a block guide 348 shown in FIG. 9B are arranged between the movable body 346A and the support frame 340A.

When the swing motor 343A rotates, the screw shaft 345A rotates and the movable body 346A moves in the axial direction of the screw shaft 345A. At this time, the support frame 340 </ b> A swings along the arc-shaped frame guide 342 </ b> A, and the central axis of the adjustment core 331 </ b> A is inclined with respect to the central axis of the winding core 110.

The rotational force of the swing motor 343A gives a force in a direction approaching the winding core 110 to one axial end of the adjustment core 331A, and moves away from the winding core 110 to the other axial end of the adjustment core 331A. Give power. Therefore, the winding tension of the adjustment sheet 25 increases as the distance from one end side (for example, Y2 side) to the other end side (for example, Y1 side) of the adjustment sheet 25 increases, and the adjustment sheet 25 increases in elongation. The thickness of 25 is reduced. The elongation of the adjustment sheet 25 may be elastic deformation or plastic deformation.

The control unit 380A includes a microcomputer including a CPU, a RAM, a ROM, and the like. By causing the CPU to execute a program stored in the ROM or the like, various drive units (for example, a winding motor 112, an adjustment motor 341A, a swing motor, and the like). The motor 343A) is controlled.

In this modification, the width direction distribution of the winding tension of the adjustment sheet 25 is adjusted by swinging the center axis of the adjustment core 310A with respect to the center axis of the winding core 110, and the width of the thickness of the adjustment sheet 25 is adjusted. Adjust the direction distribution. Thereby, the distribution in the winding axis direction of the winding radius R of the glass sheet 10 can be adjusted, and the winding position of the glass sheet 10 wound around the winding core 110 after that can be controlled. Since this control is performed by adjusting the shape of the surface around which the glass sheet 10 is wound as in the first embodiment, almost no shear stress is applied to the glass sheet 10 and the glass sheet 10 is difficult to break. Therefore, a good quality glass roll is obtained.

[Second Modification of Third Embodiment]
In the third embodiment, the central axis of the nip rolls 333 and 334 is set to the central axis of the core 110 for the purpose of adjusting the width direction distribution of the thickness of the adjustment sheet 25 continuously wound around the core 110. Rock.

On the other hand, in this modification, instead of the nip rolls 333 and 334, a support roll that supports the adjustment sheet 25 in an arc shape is used, and the central axis of the support roll is swung with respect to the central axis of the core 110. Is different. Hereinafter, the difference will be mainly described.

FIG. 12 is a perspective view of a glass roll manufacturing apparatus according to a second modification of the third embodiment. In FIG. 12, for the sake of convenience, the illustration of the adjustment core and the adjustment motor that rotates the adjustment core is omitted. FIG. 13 is a side view showing a support roll that supports an adjustment sheet that moves from the adjustment core toward the winding core.

The glass roll manufacturing apparatus 300B of this embodiment includes a core 110, a position sensor 120, an adjustment unit 330B, and a control unit 380B.

The adjusting unit 330B adjusts the distribution in the winding axis direction of the winding radius R of the glass sheet 10 based on the monitoring result by the position sensor 120. This adjustment is performed by adjusting the distribution in the width direction of the thickness of the adjustment sheet 25 that is continuously wound around the core 110 together with the glass sheet 10.

The adjustment unit 330B adjusts the width direction distribution of the winding tension of the adjustment sheet 25 in order to adjust the width direction distribution of the thickness of the adjustment sheet 25. As the adjustment sheet 25, a resin film or paper is used. The adjustment sheet 25 may be wider than the glass sheet 10. The front end portion of the glass sheet 10 may be fixed to the winding core 110 with a double-sided tape or electrostatic force, or may be fixed by being sandwiched between a slip sheet or a resin sheet and the winding core 110. The front end portion of the adjustment sheet 25 may be fixed to the winding core 110 with a double-sided tape, electrostatic force, or the like, or may be fixed between a slip sheet or a resin sheet and the winding core 110.

The adjustment unit 330B supports the adjustment core around which the adjustment sheet 25 is wound, the adjustment motor that rotates the adjustment core around the central axis of the adjustment core, and the adjustment sheet 25 that moves from the adjustment core toward the winding core 110. A plurality of (for example, three) support rolls 332B to 334B.

The adjustment core is rotated by the adjustment motor, and sends out the adjustment sheet 25 toward the support rolls 332B to 334B. The thickness of the adjustment sheet 25 before passing through the support rolls 332B to 334B may be uniform in the width direction of the adjustment sheet 25. The central axis of the adjustment core is parallel to the central axis of the winding core 110.

The adjustment motor is controlled so that a predetermined tension is applied to the adjustment sheet 25 between the adjustment core and the support rolls 332B to 334B. This control is performed by the control unit 380B.

The support rolls 332B to 334B support the adjustment sheet 25 in an arc shape as shown in FIG. The adjustment sheet 25 has an arc shape along a part of the outer peripheral surface of the support rolls 332B to 334B.

The arrangement of the support rolls 332B to 334B is set so as to satisfy the following formula (1).

U2 / U1 ≦ exp (μ1 × θ1 + μ2 × θ2 + μ3 × θ3) (1)
In the above formula (1), U1 represents the tension of the adjustment sheet 25 before passing through the support rolls 332B to 334B, and U2 (≧ U1) represents the tension of the adjustment sheet 25 after passing through the support rolls 332B to 334B. Further, μ1 to μ3 are static friction coefficients between the support rolls 332B to 334B and the adjustment sheet 25, and θ1 to θ3 are center angles of arcuate portions of the adjustment sheet 25.

The support rolls 332B to 334B rotate passively with the rotation of the core 110, and send the adjustment sheet 25 toward the core 110. The central axes of the support rolls 332B to 334B are parallel to the central axis of the core 110 and can be inclined with respect to the central axis of the core 110.

The adjustment unit 330B further includes a support frame 340B that supports the support rolls 332B to 334B rotatably about the central axis of the support rolls 332B to 334B, and a swing motor 343B that swings the support frame 340B.

The support frame 340B rotatably supports the support rolls 332B to 334B. The support frame 340B can swing along the arcuate frame guide 342B. The support frame 340B may support the support rolls 332B to 334B so as to be rotatable, and may support the adjustment core so as to be rotatable about the central axis of the adjustment core.

The swing motor 343B swings the support frame 340B. Between the swing motor 343B and the support frame 340B, a ball screw unit 344B that converts the rotational motion of the swing motor 343B into a linear motion is disposed. The ball screw unit 344B includes a screw shaft 345B that rotates together with the swing motor 343B, and a movable body 346B that includes a screw hole into which the screw shaft 345B is screwed. A block 347 and a block guide 348 shown in FIG. 9B are arranged between the movable body 346B and the support frame 340B.

When the swing motor 343B rotates, the screw shaft 345B rotates, and the movable body 346B moves in the axial direction of the screw shaft 345B. At this time, the support frame 340B swings along the arcuate frame guide 342B, and the central axes of the support rolls 332B to 334B are inclined with respect to the central axis of the core 110.

The rotational force of the swing motor 343B applies a force in a direction approaching the core 110 to one axial end of the support rolls 332B to 334B, and the core 110 to the other axial end of the support rolls 332B to 334B. Give the force away from the. Therefore, the winding tension of the adjustment sheet 25 increases as the distance from one end side (for example, Y2 side) to the other end side (for example, Y1 side) of the adjustment sheet 25 increases, and the adjustment sheet 25 increases in elongation. The thickness of 25 is reduced. The elongation of the adjustment sheet 25 may be elastic deformation or plastic deformation.

The control unit 380B includes a microcomputer including a CPU, a RAM, a ROM, and the like. By causing the CPU to execute a program stored in the ROM or the like, various driving units (for example, a winding motor 112, an adjustment motor, a swing motor) The motor 343B) is controlled.

In this modification, the width direction distribution of the winding tension of the adjustment sheet 25 is adjusted by swinging the center axis of the support rolls 332B to 334B with respect to the center axis of the winding core 110, and the thickness of the adjustment sheet 25 is adjusted. Adjust the distribution in the width direction. Thereby, the distribution in the winding axis direction of the winding radius R of the glass sheet 10 can be adjusted, and the winding position of the glass sheet 10 wound around the winding core 110 after that can be controlled. Since this control is performed by adjusting the shape of the surface around which the glass sheet 10 is wound as in the first embodiment, almost no shear stress is applied to the glass sheet 10 and the glass sheet 10 is difficult to break. Therefore, a good quality glass roll is obtained.

In this modification, a plurality of (for example, three) support rolls 332B to 334B are used. As long as the adjustment sheet 25 can be supported in an arc shape, the number of support rolls may be one, and the number of support rolls is not particularly limited.

[Third Modification of Third Embodiment]
In the said 3rd Embodiment, the width direction distribution of the winding tension | tensile_strength of the adjustment sheet 25 was adjusted in order to adjust the width direction distribution of the thickness of the adjustment sheet 25 wound around the winding core 110 continuously.

On the other hand, this modification is different in that the width direction distribution of the nip pressure of the adjustment sheet 25 is adjusted for the same purpose. Hereinafter, the difference will be mainly described.

FIG. 14 is a perspective view of a glass roll manufacturing apparatus according to a third modification of the third embodiment. In FIG. 14, illustration of the adjustment core and the position sensor is omitted for convenience.

The glass roll manufacturing apparatus 300C of the present embodiment includes a core 110, a position sensor 120, an adjustment unit 330C, and a control unit 380C.

The adjusting unit 330C adjusts the distribution of the winding radius R of the glass sheet 10 in the winding axis direction based on the monitoring result by the position sensor 120. This adjustment is performed by adjusting the distribution in the width direction of the thickness of the adjustment sheet 25 that is continuously wound around the core 110 together with the glass sheet 10.

The adjustment unit 330C adjusts the width direction distribution of the nip pressure of the adjustment sheet 25 in order to adjust the width direction distribution of the thickness of the adjustment sheet 25. As the adjustment sheet 25, a resin film or paper is used. The adjustment sheet 25 may be wider than the glass sheet 10. The front end portion of the glass sheet 10 may be fixed to the winding core 110 with a double-sided tape or electrostatic force, or may be fixed by being sandwiched between a slip sheet or a resin sheet and the winding core 110. The front end portion of the adjustment sheet 25 may be fixed to the winding core 110 with a double-sided tape, electrostatic force, or the like, or may be fixed between a slip sheet or a resin sheet and the winding core 110.

The adjustment unit 330C rotates one of the adjustment core around which the adjustment sheet 25 is wound, the two nip rolls 333C and 334C that sandwich the adjustment sheet 25 that moves from the adjustment core toward the winding core 110, and the nip rolls 333C and 334C. A rotating motor 335C. When the rotation motor 335C rotates one nip roll 333C, the adjustment sheet 25 sandwiched between the nip rolls 333C and 334C is sent out toward the core 110, and the other nip roll 334C rotates.

The adjustment core passively rotates as the nip rolls 333C and 334C rotate, and sends the adjustment sheet 25 toward the nip rolls 333C and 334C. The thickness of the adjustment sheet 25 before passing through the nip rolls 333C and 334C may be uniform in the width direction of the adjustment sheet. The central axis of the adjustment core is parallel to the central axis of the winding core 110.

The nip rolls 333C and 334C sandwich and support the adjustment sheet 25 sent out from the adjustment core. The nip rolls 333C and 334C sandwich the adjustment sheet 25 with the pressure of the fluid pressure cylinders 336C and 337C, for example. The fluid pressure cylinders 336C and 337C are fixed to the support frame 340C.

The central axes of the nip rolls 333C and 334C are parallel to the central axis of the core 110, and the central axis of one nip roll 333C can be inclined with respect to the central axis of the other nip roll 334C.

The pressures of the fluid pressure cylinders 336C and 337 are set so that the adjustment sheet 25 is plastically deformed when passing between the two nip rolls 333C and 334C. The pressure in the fluid pressure cylinders 336C and 337C is controlled by the control unit 380C.

When the pressure of the fluid pressure cylinder 336C on the Y1 side becomes larger than the pressure of the fluid pressure cylinder 337C on the Y2 side, the nip pressure of the adjustment sheet 25 increases from the Y2 side in the width direction of the adjustment sheet 25 toward the Y1 direction. The thickness of the adjustment sheet 25 is reduced. On the other hand, when the pressure of the fluid pressure cylinder 336C on the Y2 side becomes larger than the pressure of the fluid pressure cylinder 337C on the Y1 side, the nip pressure of the adjustment sheet 25 increases from the Y1 side in the width direction of the adjustment sheet 25 toward the Y2 direction. Thus, the thickness of the adjustment sheet 25 is reduced.

The control unit 380C includes a microcomputer including a CPU, a RAM, a ROM, and the like. By causing the CPU to execute a program stored in the ROM or the like, various drive units (for example, the winding motor 112, the fluid pressure cylinder 336C, 337C, rotary motor 335C).

In this modification, the width direction distribution of the nip pressure of the adjustment sheet 25 is adjusted by adjusting the pressure of the fluid pressure cylinders 338C and 339C, and the width direction distribution of the thickness of the adjustment sheet 25 is adjusted. Thereby, the distribution in the winding axis direction of the winding radius R of the glass sheet 10 can be adjusted, and the winding position of the glass sheet 10 wound around the winding core 110 after that can be controlled. Since this control is performed by adjusting the shape of the surface around which the glass sheet 10 is wound as in the first embodiment, almost no shear stress is applied to the glass sheet 10 and the glass sheet 10 is difficult to break. Therefore, a good quality glass roll is obtained.

In this modification, a plurality of fluid pressure cylinders 338C and 339C are used. However, the nip pressure can be unevenly distributed using one fluid pressure cylinder. For example, if one end of each of the nip rolls 333C and 334C is supported by a hinge and a fluid pressure cylinder is used as a turning source for turning around the hinge, the nip pressure can be unevenly distributed by one fluid pressure cylinder. It is.

[Fourth Embodiment]
In the third embodiment, the width direction distribution of the winding tension of the adjustment sheet 25 is adjusted for the purpose of adjusting the width direction distribution of the thickness of the adjustment sheet 25.

On the other hand, the present embodiment is different in that the distribution in the width direction of the winding tension of the glass sheet 10 is adjusted for the same purpose. Hereinafter, the difference will be mainly described.

FIG. 15 is a perspective view of a glass roll manufacturing apparatus according to the fourth embodiment. In FIG. 15, for the sake of convenience, the illustration of the adjustment core, the adjustment motor that rotates the adjustment core, and the position sensor is omitted. FIG. 16 is an explanatory diagram of the glass roll manufacturing method according to the fourth embodiment, and is a cross-sectional view showing the state of the glass sheet layer formed on the core.

The glass roll manufacturing apparatus 400 of this embodiment includes a core 110, a position sensor 120, an adjustment unit 430, and a control unit 480.

The adjustment unit 430 adjusts the distribution in the winding axis direction of the winding radius R of the glass sheet 10 based on the monitoring result by the position sensor 120. This adjustment is performed by adjusting the distribution in the width direction of the thickness of the adjustment sheet 25 that is continuously wound around the core 110 together with the glass sheet 10.

In order to adjust the width direction distribution of the thickness of the adjustment sheet 25, the adjustment unit 430 adjusts the width direction distribution of the winding tension of the glass sheet 10, and adjusts the thickness of the adjustment sheet 25 already wound around the core 110. The width direction distribution of the compressive force compressed in the direction is adjusted. As the adjustment sheet 25, a resin film or paper is used. The adjustment sheet 25 may be wider than the glass sheet 10.

The adjustment unit 430 includes an adjustment core around which the adjustment sheet 25 is wound, an adjustment motor that rotates the adjustment core, two nip rolls 433 and 434 that sandwich the glass sheet 10 that moves toward the winding core 110, and a nip roll 433. Rotation motor 435 that rotates one of 434. When the rotation motor 435 rotates one nip roll 433, the glass sheet 10 sandwiched between the nip rolls 433 and 434 is sent out toward the core 110, and the other nip roll 434 rotates.

The adjustment core is rotated by the adjustment motor, and the adjustment sheet 25 is sent out toward the winding core 110. The thickness of the adjustment sheet 25 before being wound around the winding core 110 may be uniform in the width direction of the adjustment sheet 25. The central axis of the adjustment core is parallel to the central axis of the winding core 110.

The adjustment motor is controlled so that a predetermined winding tension is applied to the adjustment sheet 25 fed from the adjustment core toward the winding core 110. This control is performed by the control unit 480.

The nip rolls 433 and 434 sandwich and support the glass sheet 10 that moves toward the core 110. The nip rolls 433 and 434 sandwich the glass sheet 10 with the pressure of the fluid pressure cylinders 436 and 437, for example.

The central axes of the nip rolls 433 and 434 are parallel to the central axis of the core 110 and can be inclined with respect to the central axis of the core 110.

The rotation motor 435 is controlled so that a predetermined winding tension is applied to the glass sheet 10 fed from the nip rolls 433 and 434 toward the core 110. This control is performed by the control unit 480.

The adjusting unit 430 further includes a support frame 440 that rotatably supports the nip rolls 433 and 434 around the center axis of the nip rolls 433 and 434, and a swing motor 443 that swings the support frame 440.

The support frame 440 supports the nip rolls 433 and 434 in a rotatable manner. A rotation motor 435 and fluid pressure cylinders 436 and 437 are fixed to the support frame 440. The support frame 440 can swing along an arcuate frame guide 442.

The swing motor 443 swings the support frame 440. Between the swing motor 443 and the support frame 440, a ball screw unit 444 that converts the rotational motion of the swing motor 443 into a linear motion is disposed. The ball screw unit 444 includes a screw shaft 445 that rotates together with the swing motor 443 and a movable body 446 that includes a screw hole into which the screw shaft 445 is screwed. A block 347 and a block guide 348 shown in FIG. 9B are disposed between the movable body 446 and the support frame 440.

When the swing motor 443 rotates, the screw shaft 445 rotates and the movable body 446 moves in the axial direction of the screw shaft 445. At this time, the support frame 440 swings along the arcuate frame guide 442, and the central axes of the nip rolls 433 and 434 are inclined with respect to the central axis of the core 110.

The rotational force of the swing motor 443 applies a force in a direction approaching the core 110 to one axial end of the nip rolls 433 and 434 and moves away from the core 110 to the other axial end of the nip rolls 433 and 434. Give direction force. Therefore, the winding tension of the glass sheet 10 increases as it goes from one end side (for example, Y2 side) in the width direction of the glass sheet 10 to the other end side (for example, Y1 side), and adjustment that has already been wound around the core 110. The compression force that compresses the sheet 25 in the thickness direction is increased. Accordingly, the adjustment sheet 25 is more strongly compressed and the thickness of the adjustment sheet 25 is reduced from one end side (for example, Y2 side) in the width direction of the adjustment sheet 25 to the other end side (for example, Y1 side). The compression of the adjustment sheet 25 may be elastic deformation or plastic deformation. In addition, when the adjustment sheet 25 is compressed, the glass sheet 10 hardly deforms.
The control unit 480 includes a microcomputer including a CPU, a RAM, a ROM, and the like. By causing the CPU to execute a program stored in the ROM or the like, various driving units (for example, a winding motor 112, an adjustment motor, a rotation motor) 435, fluid pressure cylinders 436, 437, and swing motor 443).

Next, the operation (glass roll manufacturing method) of the glass roll manufacturing apparatus 400 having the above configuration will be described. Various operations of the glass roll manufacturing apparatus 400 are performed under the control of the control unit 480.

The control unit 480 drives the winding motor 112 at time t0 shown in FIG. 4 to rotate the core 110 to which the front end of the glass sheet 10 and the front end of the adjustment sheet 25 are fixed. The glass sheet 10 and the adjustment sheet 25 are wound up. At this time, the control unit 480 drives the fluid pressure cylinders 436 and 437, sandwiches the adjustment sheet 25 with the nip rolls 433 and 434, and sends it out toward the core 110. At time t0, the center axes of the nip rolls 433 and 434 are parallel to the center axis of the core 110, and the swing motor 443 is stopped. For example, the control unit 480 starts monitoring by the position sensor 120 at time t0.

When the control unit 480 detects that the position of the side edge 11 of the glass sheet 10 has moved beyond the set value ΔY1 in the Y1 direction from the reference position Y0 at time t1 shown in FIG. 4, the controller 480 drives the swing motor 443. The winding tension of the glass sheet 10 is reduced as it goes from the Y1 side to the Y2 direction. Thereby, the force which compresses the adjustment sheet 25 already wound around the core 110 in the thickness direction becomes smaller and the thickness of the adjustment sheet 25 becomes thicker toward the Y2 direction from the Y1 side. Therefore, the winding radius R of the glass sheet 10 increases from the Y1 side toward the Y2 direction as shown in FIG. 16 (a), so that the winding around the core 110 is thereafter performed as shown in FIG. 16 (b). The winding position of the rotated glass sheet 10 is shifted in the Y2 direction.

When the control unit 480 detects that the distance between the position of the side edge 11 of the glass sheet 10 and the reference position Y0 has returned to the set value ΔY1 or less at time t2 shown in FIG. 4, the control unit 480 moves the support frame 440 to the original position. The driving of the swing motor 443 is stopped. The rigidity of the glass sheet 10 is higher than that of the adjustment sheet 25, and the glass sheet 10 is hardly deformed by the driving force of the swing motor 443 (because it does not expand or contract), so that the drive state and stop of the swing motor 443 are stopped. The position of the support frame 440 hardly changes depending on the state.

When the control unit 480 detects that the position of the side edge 11 of the glass sheet 10 has moved from the reference position Y0 in the Y2 direction beyond the set value ΔY2 at time t3 shown in FIG. 4, it drives the swing motor 443. The winding tension of the glass sheet 10 is increased from the Y1 side toward the Y2 direction. Thereby, the compression force which compresses the adjustment sheet 25 already wound around the core 110 in the thickness direction becomes weaker toward the Y1 direction from the Y2 side, and the thickness of the adjustment sheet 25 becomes thicker. Therefore, as shown in FIG. 16C, the winding radius R of the glass sheet 10 increases from the Y2 side in the Y1 direction, so that the winding around the core 110 is thereafter performed as shown in FIG. The winding position of the glass sheet 10 to be rotated is shifted in the Y1 direction.

In this way, the control unit 480 controls the winding position of the glass sheet 10. Since this control is performed by adjusting the shape of the surface around which the glass sheet 10 is wound as in the first embodiment, almost no shear stress is applied to the glass sheet 10 and the glass sheet 10 is difficult to break. Therefore, a high quality glass roll 490 is obtained. The adjustment sheet 25 is inserted into the glass roll 490, and at least a part of the adjustment sheet 25 increases in thickness from one end side to the other end side along the width direction.

In this embodiment, the driving force of the swing motor 443 is used to adjust the width direction distribution of the winding tension of the glass sheet 10, but even if the width direction distribution of the nip pressure of the glass sheet 10 is adjusted. Good. The higher the nip pressure of the glass sheet 10, the slower the feeding speed of the glass sheet 10, so that the winding tension of the glass sheet 10 becomes higher. Adjustment of the width direction distribution of the nip pressure of the glass sheet 10 is performed by adjusting the pressure of the fluid pressure cylinders 436 and 437, for example.

Further, in this embodiment, nip rolls 433 and 434 that sandwich the glass sheet 10 are used to adjust the distribution in the width direction of the winding tension of the glass sheet 10, but the same as in the second modification of the third embodiment. In addition, support rolls 332B to 334B that support the glass sheet 10 in an arc shape may be used.

Further, when the adjustment sheet 25 of the present embodiment is wound around the core 110 together with the glass sheet 10, the adjustment sheet 25 is disposed radially outward of the core 110 than the glass sheet 10, but the core is more than the glass sheet 10. 110 may be arranged inward in the radial direction, or may be arranged on both sides.

In this embodiment, the driving force of the swing motor 543 is used to adjust the width direction distribution of the winding tension of the glass sheet 10. However, even if the width direction distribution of the nip pressure of the glass sheet 10 is adjusted. Good. The higher the nip pressure of the glass sheet 10, the slower the feeding speed of the glass sheet 10, so that the winding tension of the glass sheet 10 becomes higher. Adjustment of the width direction distribution of the nip pressure of the glass sheet 10 is performed by adjusting the pressure of the fluid pressure cylinders 536 and 537, for example.

In this embodiment, nip rolls 533 and 534 that sandwich the glass sheet 10 are used in order to adjust the distribution in the width direction of the winding tension of the glass sheet 10, but the same as in the second modification of the third embodiment. In addition, support rolls 332B to 334B that support the glass sheet 10 in an arc shape may be used.

The first to fourth embodiments of the present invention and the modifications thereof have been described above, but the present invention is not limited to the above-described embodiments and modifications thereof, and the present invention described in the claims. Various modifications and changes can be made within the scope of the present invention.

For example, in the said embodiment and its modification, in order to arrange the winding position of a glass sheet, although adjusting the distribution in the winding axis direction of the winding radius R of a glass sheet, in order to shift the winding position of a glass sheet, a glass sheet The distribution of the winding radius R in the winding axis direction may be adjusted.

Also, the above embodiment and its modifications may be used in combination. Combinations can vary widely.

The present invention is suitable for a glass roll manufacturing method, a glass roll manufacturing apparatus, and a glass roll in which a glass sheet used for a display panel such as a liquid crystal panel or an organic EL panel, a solar battery or the like is wound around a winding core. .

This application is based on Japanese Patent Application No. 2012-005647 filed with the Japan Patent Office on January 13, 2012, claims the priority thereof, and refers to the entire contents of the application. It is included.

DESCRIPTION OF SYMBOLS 10 Glass sheet 20 Adjustment sheet 100 Glass roll manufacturing apparatus 110 Core 112 Winding motor 120 Position sensor 130 Adjustment part 180 Control part

Claims (18)

1. In a glass roll manufacturing method of manufacturing a glass roll by winding a glass sheet around a core,
   By monitoring the position of the side edge of the glass sheet with respect to the winding core and adjusting the distribution in the winding axis direction of the winding radius of the glass sheet based on the monitoring result, the winding around the winding core is performed thereafter. The glass roll manufacturing method including the adjustment process which adjusts the winding position of the said glass sheet rotated.
2. The adjustment step includes adjusting the winding position of the glass sheet by adjusting at least one of the insertion position of the adjustment sheet inserted between the glass sheets and the size and shape of the adjustment sheet. The glass roll manufacturing method of Claim 1 which adjusts distribution in an axial direction.
3. The said adjustment process adjusts distribution in the winding axis direction of the winding radius of the said glass sheet by adjusting the insertion position of the said adjustment sheet | seat narrower than the said glass sheet. Production method.
4. The said adjustment process adjusts distribution in the winding axis direction of the winding radius of the said glass sheet by adjusting the insertion position of the said multiple types of said adjustment sheet from which a dimension and a shape differ. Production method.
5. The adjustment sheet is continuously wound around the core together with the glass sheet,
   The said adjustment process is a glass roll manufacturing method of Claim 2 which adjusts the width direction distribution of the thickness of the said adjustment sheet | seat by adjusting the width direction distribution of the winding tension | tensile_strength of the said adjustment sheet.
6. The adjustment sheet, after passing between nip rolls, is continuously wound around the core together with the glass sheet,
   The said adjustment process is a glass roll manufacturing method of Claim 2 which adjusts the width direction distribution of the thickness of the said adjustment sheet | seat by adjusting the width direction distribution of the nip pressure of the said adjustment sheet | seat.
7. The adjustment sheet is continuously wound around the core together with the glass sheet,
   The said adjustment process adjusts the width direction distribution of the thickness of the said adjustment sheet already wound by the said core by adjusting the width direction distribution of the winding tension | tensile_strength of the said glass sheet. Glass roll manufacturing method.
8. In the adjustment step, when the position of the side edge of the glass sheet with respect to the winding core moves beyond a set value in a predetermined direction from a reference position, the direction toward the direction opposite to the predetermined direction along the winding axis direction increases. The method for producing a glass roll according to any one of claims 1 to 7, wherein the winding diameter of the glass sheet is increased, and then the winding position of the glass sheet wound around the core is adjusted.
9. In a glass roll manufacturing apparatus for manufacturing a glass roll by winding a glass sheet around a core,
   A position sensor for monitoring a side edge position of the glass sheet with respect to the core;
   By adjusting the distribution in the winding axis direction of the winding radius of the glass sheet based on the monitoring result by the position sensor, the winding position of the glass sheet wound around the core is adjusted thereafter. The glass roll manufacturing apparatus containing an adjustment part.
10. The adjustment unit adjusts at least one of the insertion position of the adjustment sheet inserted between the glass sheets and the size and shape of the adjustment sheet, thereby winding the winding radius of the glass sheet. The glass roll manufacturing apparatus of Claim 9 which adjusts distribution in an axial direction.
11. The said adjustment part adjusts the distribution in the winding axis direction of the winding radius of the said glass sheet by adjusting the insertion position of the said adjustment sheet | seat narrower than the said glass sheet, The glass roll of Claim 10 Manufacturing equipment.
12. The said adjustment part adjusts distribution in the winding axis direction of the winding radius of the said glass sheet by adjusting the insertion position of the said multiple types of said adjustment sheet from which a dimension and a shape differ, The glass roll of Claim 10 Manufacturing equipment.
13. The adjustment sheet is continuously wound around the core together with the glass sheet,
    The said adjustment part is a glass roll apparatus of Claim 10 which adjusts the width direction distribution of the thickness of the said adjustment sheet | seat by adjusting the width direction distribution of the winding tension | tensile_strength of the said adjustment sheet | seat.
14. The adjustment sheet, after passing between nip rolls, is continuously wound around the core together with the glass sheet,
    The said adjustment part is a glass roll manufacturing apparatus of Claim 10 which adjusts the width direction distribution of the thickness of the said adjustment sheet | seat by adjusting the width direction distribution of the nip pressure of the said adjustment sheet | seat.
15. The adjustment sheet is continuously wound around the core together with the glass sheet,
    The said adjustment part adjusts the width direction distribution of the thickness of the said adjustment sheet already wound by the said core by adjusting the width direction distribution of the winding tension | tensile_strength of the said glass sheet. Glass roll manufacturing equipment.
16. When the position of the side edge of the glass sheet with respect to the winding core detected by the position sensor moves beyond a set value in a predetermined direction from a reference position, the adjusting unit moves along the winding axis direction along the predetermined winding axis direction. The winding diameter of the glass sheet is increased as it goes in the direction opposite to the direction, and then the winding position of the glass sheet wound around the core is adjusted. Glass roll manufacturing equipment.
17. In a glass roll formed by winding a glass sheet into a roll,
    A glass roll in which a winding radius of at least a part of the glass sheet increases from one end side to the other end side in the winding axis direction.
18. The glass roll according to claim 17, wherein an adjustment sheet narrower than the glass sheet, or an adjustment sheet having a thickness that increases from one end side in the width direction to the other end side of the glass sheet is inserted.

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