JP2000239035A - Conveying of glass ribbon and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably convey a glass ribbon and prevent secondary defects from occurring by making the conveyance of glass ribbon include a means for sucking and floating the glass ribbon produced by a float process and kept under high temperature conditions and conveying the glass ribbon, taking out the glass ribbon from a float bath and conveying the taken out glass ribbon. SOLUTION: A glass ribbon 12 reaching an outlet part 17 of a float bath 16 is lifted to some extent near the same outlet part 17, admitted into a layer 18 and annealed in a process for conveying thereof in the layer 18. Conveying rollers 20 for conveying the glass ribbon 12 in contact therewith are installed in the interior of the layer 18 and plural suction floating device 22 for floating all or a part of the glass ribbon 12 from the conveying rollers 20 and conveying the glass ribbon 12 out of contact therewith are provided above the conveying rollers 20 and in the conveying direction of the glass ribbon 12. The noncontact conveying operation with the suction float devices 22 and the contact conveying operation with the conveying rollers 20 are changed over or used together as necessary to convey the glass ribbon 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for transporting a glass ribbon, and more particularly to a method for transporting a glass ribbon in a high temperature state produced by a float method by a transportation roller of an annealing furnace to gradually cool the glass ribbon. The present invention relates to a transfer method and an apparatus therefor.

[0002]

2. Description of the Related Art An apparatus for manufacturing a glass ribbon by a float method mainly comprises a tank kiln for storing molten glass, a float bath for storing molten tin, and a layer (slow cooling furnace) for gradually cooling the glass ribbon. When molten glass is poured from a tank kiln into a float bath, the glass spreads over the molten tin and reaches an equilibrium thickness. At this time, when the glass is pulled in the direction of the layer, the glass is stretched and advances as a glass band having a certain width in the downstream direction of the float bath. The glass ribbon formed into a belt shape is cooled to such a degree that it does not deform even if it comes into contact with the transport rollers of the layer before reaching the outlet of the float bath, and is then lifted up a little by the outlet of the float bath. Enter into the layer. Then, the glass ribbon is cooled while being conveyed by the conveying rollers of the layer.

Since the glass ribbon is transported in the layer by a contact roller using a transport roller, even if the glass ribbon is cooled to a certain degree, the surface of the transport roller may be slightly uneven (formed by machining or the like). Irregularities or irregularities due to the attachment of foreign matter) may be transferred to the glass ribbon, resulting in poor quality. Therefore, as a method of transporting the glass ribbon, a non-contact transport method that does not contact the transport roller is desired.To achieve this, conventionally, a gas is supplied from below the glass ribbon to the glass ribbon, and the glass is transported. A method of transporting a ribbon while floating it is known (Japanese Patent Publication No. 6-506185, Japanese Patent Publication No. 6-506180). In addition, it is not a glass ribbon transfer device in the layer,
Japanese Patent No. 3448 discloses a delivery device in which a support device is arranged near an outlet of a float bath, and the support device floats the glass ribbon from the float bath and sends the glass ribbon to a layer.

[0004]

However, in the transfer method in which a gas is supplied from below the glass ribbon and the glass ribbon is transferred in a non-contact manner, the glass powder and dust are wound up by the gas and the atmosphere in the layer is deteriorated. Therefore, there is a disadvantage that the glass ribbon is contaminated and that the molten metal in the metal bath is adversely affected.

If only the method of transporting the glass ribbon in a non-contact manner is employed, the glass ribbon is transported stably when a trouble such as a crack occurs in the glass ribbon being transported at the start of manufacturing or during normal operation. There is a problem that you can not. In particular, the float method is a plate making method suitable for continuous production of glass ribbons, and it requires a great deal of labor to temporarily stop and restart the line, and it is necessary to perform various conditions again. It takes time to drive.

Therefore, even if the above-mentioned trouble occurs during the conveyance of the glass ribbon, it is not desirable to stop the line in order to eliminate the trouble. In addition, the above-mentioned trouble cannot be generally solved in a short time, and unstable conveyance of the glass ribbon may continue for a long time. This causes a secondary failure to occur.

[0007] As described in JP-T-7-503448, when a support device is installed in a float bath, the atmosphere in the float bath is disturbed, which has a disadvantage that the quality of the glass ribbon is adversely affected. The present invention has been made in view of such circumstances, and is a transfer method and apparatus for transferring a glass ribbon manufactured by a float method, wherein the glass ribbon is non-degraded without adversely affecting the atmosphere of an annealing furnace or a float bath. It is an object of the present invention to provide a method and an apparatus for transporting a glass ribbon which can be transported in a contact manner and can be transported stably at the start of manufacturing or at the time of trouble.

[0008]

In order to achieve the above object, the present invention conveys a glass ribbon in a high temperature state produced by a float method from a float bath and conveys the glass ribbon by a conveying roller. In the method, suction floating means for sucking the glass ribbon unloaded from the float bath above the transport roller and contacting the glass ribbon in a non-contact manner and transporting all or a part of the glass ribbon from the transport roller is arranged. The non-contact transfer operation of the glass ribbon by the suction floating means and the contact transfer operation of the glass ribbon by the transfer roller are switched as necessary or used together to transfer the glass ribbon.

Further, in order to achieve the above object, the present invention provides a glass ribbon transport apparatus for transporting a glass ribbon in a high temperature state manufactured by a float method from a float bath and transporting the glass ribbon by a transport roller. Suction floating means for sucking the glass ribbon unloaded from the float bath above the transport rollers and transporting the glass ribbon in a non-contact state while floating all or a part of the glass ribbon from the transport rollers is arranged. Features.

According to the first and second aspects of the present invention, the suction floating means is disposed above the conveying roller, and the non-contact conveyance operation of the glass ribbon by the suction floating means and the contact conveyance operation of the glass ribbon by the conveyance roller. The glass ribbon is conveyed by switching between them as necessary or by using them together. As described above, when the suction-type suction floating unit is used as the non-contact transfer means of the glass ribbon, the glass ribbon can be transferred in a non-contact manner without adversely affecting the atmosphere of the annealing furnace or the float bath. In addition, the glass ribbon may be conveyed in a state of being entirely floated by the suction floating means, or only the center portion which becomes a product is floated, and an outer edge portion (ear portion) which does not become a product is brought into contact with a transport roller. It may be conveyed in a state where it is placed. In this case, the transport roller is rotated.

At the start of manufacturing or when a trouble occurs, the switching device according to claim 3 switches from the non-contact conveyance operation by the suction floating means to the contact conveyance operation by the conveyance roller, and the glass ribbon is contact-conveyed by the conveyance roller. Let it. Thereby, since the glass ribbon is stably conveyed, it is possible to prevent the occurrence of a secondary defect that is caused by the unstable conveyance of the glass ribbon and the quality of the glass ribbon which is originally not problematic.

According to a fourth aspect of the present invention, there is provided an invention relating to the structure of the suction floating means, which is characterized by arranging an outer chamber member, an inner chamber member, a communication pipe, and a suction means in a casing. The point is that the glass ribbon can be sucked and floated by the suction means of the table. When the suction means is driven, air in the casing is sucked from the gas suction opening of the outer chamber member, and the air is discharged into the casing. At this time, the air pressure in the casing is substantially atmospheric pressure, and the air pressure in the inner chamber member that is communicated with the internal space of the casing via the communication pipe is also substantially atmospheric pressure. However, the air pressure in the outer chamber member is negative pressure by the suction means. By such a balance of the three air pressures, a gas is injected from the injection opening of the inner chamber member to the glass ribbon, and the injected gas is sucked by the suction means from the gas suction opening of the outer chamber member, so that the gas inside the casing is removed. And is sucked into the inner chamber member through the communication pipe, and is ejected again from the ejection opening. That is, according to the suction floatation means of the present invention, the gas can be self-circulated in the casing by one suction means, so that the gas suction means and the injection means are provided exclusively. And the structure becomes simple. Further, since the gas injected from the inner chamber member circulates in the casing, the gas does not disturb the atmosphere of the lehr or the float bath.

According to a fifth aspect of the present invention, the suction floating means comprises a casing, an outer chamber member, an inner chamber member, a suction means, and a circulating means. Suction is performed by the circulating means, and the liquid is actively ejected from the ejection opening of the inner chamber member. By controlling the injection amount of this gas, the floating amount of the glass ribbon can be adjusted. As described above, the exclusive circulation means may be arranged in the suction floating means.

According to the sixth aspect of the present invention, the suction-floating means and the transport roller are relatively movably provided in a direction toward and away from each other. At the time of maintenance or production-related work, the suction / floating means and the transport roller are relatively moved in a direction away from each other to be separated. As a result, the work area is widened and work is facilitated, so that workability is improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a method and an apparatus for transporting a glass ribbon according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a sectional structural view of a glass ribbon manufacturing apparatus to which a method and an apparatus for transporting a glass ribbon according to the present invention are applied.

The glass ribbon manufacturing apparatus 10 shown in FIG.
This is a manufacturing apparatus for manufacturing a glass ribbon 12 by a float method, and a float bath 1 in which molten tin 14 is stored.
6 and the layer 18. An unillustrated tank kiln is installed on the upstream side of the float bath 16 (the left side in FIG. 1), and the molten glass stored in the tank kiln is poured into the float bath 16. The molten glass poured into the float bath 16 is
Spreading upwards to almost equilibrium thickness. This molten tin 14
The molten glass spread upward is pulled in the direction of the layer 18 and, while being stretched, advances as a glass band having a constant width in the downstream direction of the float bath 16. Then, before reaching the outlet 17 of the float bath 16, the layer 18 is cooled to a temperature at which it does not deform even if it comes into contact with the transport rollers 20, 20,.

The glass ribbon 12 arriving at the outlet 17 of the float bath 16 is slightly lifted up near the outlet 17 of the float bath 16 and enters the layer 18.
Then, it is cooled in the process of being transported in the layer 18. The gradually cooled glass ribbon 12 is transported to a plate collecting device (not shown) installed on the downstream side of the layer 18. In the layer 18, there are provided conveying rollers 20, 20,... For conveying the glass ribbon 12 in contact. A plurality of suction levitation devices (corresponding to suction levitation means) 22, 22,... For transporting the glass ribbon 12 in a non-contact manner are provided in the layer 18 above the transport roller 20 along the transport direction of the glass ribbon 12. Have been. This suction floating device 22
The glass ribbon 12 indicated by a solid line in FIG. 1 which is being conveyed by the conveyance roller 20 is floated from the conveyance roller 20 and conveyed as indicated by a two-dot chain line in FIG. Although four types of suction floating devices 22 having different shapes are shown in FIG. 1, they have the same functions, and therefore are denoted by the same reference numerals 22 in FIG. 1 for convenience.

As shown in FIG. 2, the suction floating device 22 comprises a casing 24, an outer chamber (corresponding to an outer chamber member) 26, an inner chamber (corresponding to an inner chamber member) 28, a motor 30 and a fan 32. (Corresponding to suction means) 34 and a communication pipe 36. As shown in FIG. 1, the casing 24 has grooves (corresponding to passage openings) 25, 25 for passing the glass ribbon 12 on the upstream side surface and the downstream side surface in the transport direction of the glass ribbon 12. ing. Even when the glass ribbon 12 is contacted and conveyed by the conveying roller 20,
In addition, even during non-contact conveyance by the suction floating device 22, it passes through the grooves 25, 25.

The casing 24 is divided into, for example, an upper casing 24A and a lower casing 24B with the grooves 25, 25 as boundaries. The upper casing 2
4A and the lower casing 24B are fixed to the wall surface of the layer 18, and the transport roller 20 is rotatably arranged inside thereof. As shown in FIG. 2, a plurality of screw jacks 38 are fixed to the upper surface of the upper casing 24A. The telescopic rods 39 of these jacks 38
Are fixed to the beam 40. Further, a plurality of rods 41, 41 are suspended from the beam 40, and these rods 41 penetrate through the upper casing 24A and pass through the outer chamber 2A.
6, and fixed to the inner chamber 28. Therefore, when the telescopic rod 39 of the screw jack 38 is extended, the beam 40 is raised, so that the outer chamber 2
6 and the inner chamber 28 are moved up via the rod 41. As a result, the height of the space 42 formed between the outer chamber 26 and the inner chamber 28 and the transport roller 20 increases, which is convenient during maintenance.

The upper casing 24A is provided with a plurality of limiter rollers 44 for supporting the ears 12A of the glass ribbon 12. These limiter rollers 44, 44 are rollers that regulate the floating amount of the glass ribbon 12 so that the glass ribbon 12 does not contact the outer chamber 26 and the inner chamber 28 when the glass ribbon 12 is transported in a non-contact manner. . In addition, a through hole 45 through which the limiter roller 44 is disposed is formed on the side surface of the upper casing 24A, and the lower casing 24
A through-hole 2 through which the transport roller 20 is arranged to penetrate the side surface of B
1 are formed, but the through-holes 45 and 21 do not reduce the hermeticity of the internal space 46 of the casing 24.

On the other hand, the outer chamber 26 is formed in a box shape without a bottom as shown in FIGS. 2 and 3, and a protruding tube 48 is connected to an upper central opening thereof via a flexible duct 47. As shown in FIG. 2, the fan 32 of the suction device 34 is arranged inside the protruding tube 48. The fan 32 is connected to the rotating shaft 31 of the motor 30. The motor 30 is fixed to the upper surface of the upper casing 24A, and the rotating shaft 31 is disposed through a through hole 50 formed in the upper surface of the upper casing 24. Therefore, when the fan 32 is rotated by the motor 30,
Air in the casing 24 is sucked into the outer chamber 26 from a lower opening (corresponding to a gas suction opening) 52 formed between the outer chamber 26 and the inner chamber 28, and the sucked air is projected. Top opening 49 of tube 48
From the upper casing 24A. Since the protruding tube 48 is fixed to the upper casing 24A, the displacement of the outer chamber 26 and the inner chamber 28 when ascending and descending is absorbed by the flexible duct 47.

As shown in FIG. 3, the inner chamber 28 is formed in a rectangular box. In addition, for example, four inner chambers 28 are arranged in the outer chamber 26 at predetermined intervals in the example of FIG. Further, the inner chamber 28 has communication pipes 36, 36 on both sides of the upper surface.
Are protruding. The communication pipe 36 protrudes from the upper surface of the outer chamber 26, and thereby, the inner chamber 2
8 and the internal space 46 of the casing 24 are communicated by the communication pipe 36. Therefore, the two internal spaces 54 and 46 are maintained at the same atmospheric pressure. Further, a large number of injection holes (corresponding to injection openings) 56 are formed in the lower portion of the inner chamber 28. The glass ribbon 12 is formed from these injection holes 56, 56.
The gas is jetted toward the upper surface of the.

Next, the operation of the suction flotation device 22 configured as described above will be described. Motor 30 and fan 32
Is rotated, the lower opening 5 of the outer chamber 26 is opened.
2 sucks air in the casing 24, and the air is discharged from the projecting pipe 48 into the casing 24 as shown by the upper arrow in FIG. At this time, the pressure in the casing 24 is substantially atmospheric pressure, and the internal pressure of the inner chamber 28 that is communicated with the internal space 46 of the casing 24 via the communication pipe 36 is also substantially atmospheric pressure. However, the air pressure inside the outer chamber member 26 is negative pressure by the fan 32.

Gas is injected from the injection holes 56, 56,... Of the inner chamber 28 to the glass ribbon 12 by the balance of the three air pressures, and the injected gas is supplied from the lower opening 52 of the outer chamber 28 to the fan. It is sucked by 32 and discharged into the casing 24 again. Then, the released air is sucked into the inner chamber 28 again through the communication pipe 36, and is again injected from the injection holes 56.

When the gas is ejected and sucked on the upper surface of the glass ribbon 12 as described above, the glass ribbon 12 is sucked into the inner chamber 28 and floated from the transport roller 20. Thereby, the non-contact conveyance operation of the glass ribbon 12 becomes possible. The suction force of the glass ribbon 12 can be controlled by controlling the negative pressure in the outer chamber 26, that is, by changing the rotation speed of the fan 32. This negative pressure is set based on the weight of the glass ribbon 12 and the like.

Further, according to the suction floating device 22 of the present embodiment, the gas can be self-circulated in the casing 24 by one suction device 34, so that the gas suction device and the gas ejection device are separated. The structure is simplified as compared with a suction levitation device provided exclusively. Next, an operation method of the glass ribbon manufacturing apparatus 10 to which the suction floating device 22 is applied will be described with reference to a block diagram shown in FIG.

First, the production of the glass ribbon 12 is started by operating the start switch 60 shown in FIG. At the start, the glass ribbon 12
At this time, the control device (corresponding to a switching device) 62 controls the drive of the transport roller driving device 64 and causes the transport ribbon 20 to contact and transport the glass ribbon 12. Thereby, the glass ribbon 12 is stably conveyed.

Next, when a predetermined time has passed from the start and the conveyance of the glass ribbon 12 by the conveyance roller 20 is stabilized, the control device 62 controls the drive of the suction floating device driving device 66 to perform the contact conveyance operation by the conveyance roller 20. Is switched to the non-contact transfer operation by the suction floating device 22 to transfer the glass ribbon 12. That is, the motor 30 of the suction floating device 22 is driven to float the glass ribbon 12 from the transport roller 20 and transport the glass ribbon 12 in a non-contact manner. The suction floating device 22
Has already been described, and the description thereof is omitted here.

The glass ribbon 12 may be conveyed while being floated by the suction floating device 22, or only the center portion of the glass ribbon 12 which becomes a product may be lifted, and the ear portions 12A, 12A May be conveyed in a state of contact with the conveyance roller 20. As a result, at least the center portion of the glass ribbon 12 that is to be a product,
Since the unevenness of the transport roller 20 is not transferred, a high quality glass ribbon 12 is manufactured.

On the other hand, when the trouble detecting device 68 detects that a trouble such as cracking or the like has occurred in the glass ribbon 12 during conveyance of the glass ribbon 12, the control device 62 causes the suction floating device 22 to perform a non-contact conveyance operation. Then, the entirety or a part of the glass ribbon 12 is contacted and conveyed by the conveyance roller 20 by switching to the contact conveyance operation by the conveyance roller 20 or in combination. Thereby, the glass ribbon 12 is stably conveyed, so that occurrence of secondary defects can be prevented.

When the operation is switched, it is desirable to gradually decrease the rotation speed of the fan 32 and gradually increase the negative pressure to the atmospheric pressure. As a result, the glass ribbon 12 that has floated is slowly placed on the rotating transport roller 20, so that the glass ribbon 12 is not damaged. Then, when the trouble portion is sent out from the layer 18, the operation is switched again to the non-contact transfer operation, and the glass ribbon 12 is transferred. The non-contact conveyance range by the suction floating device 22 of the present embodiment may be from the entrance to the exit of the layer 18 or from the entrance of the layer 18 to just before the plate collecting device.

During maintenance of the layer 18, the outer chamber 26 and the inner chamber 28 of the suction floating device 22 are in a state shown by solid lines in FIG. 2 (a state in which the outer chamber 26 and the inner chamber 28 are located at the lowered position). In (2), it is difficult to carry out maintenance of the transport roller 20, maintenance of the chambers 26 and 28, and operations related to production.

In this case, the outer chamber 26 and the inner chamber 28 are raised by the screw jack 38 shown in FIG. 2, and the height of the space 42 formed between the outer roller 26 and the transport roller 20 is increased to increase the work area. Secure. This facilitates maintenance work and work related to production. FIG. 5 shows a suction levitation device 70 according to the second embodiment.
FIG. 4 is a sectional view of the second embodiment, and the same or similar members as those of the suction levitation device 22 of the first embodiment shown in FIGS. 2 and 3 are denoted by the same reference numerals.

The difference between the structure of the suction levitation device 70 and the structure of the suction levitation device 22 is that the communication pipe 36 is connected to the inner chamber 2.
8 so as to protrude from the side of the outer chamber 26 to the side thereof.
A long slow cooling upper heater 72 is provided through the communication pipe 36.
It is the point that was arranged. In the suction levitation device 22, since the communication pipe 36 is provided in the vertical direction, the elongated heater 72 cannot be disposed in the inner chamber 28. Is provided in the horizontal direction, which is effective because the heater 72 can be disposed in the inner chamber 28 using the communication pipe 36.
In addition, the lower casing 24B includes a lower cooling lower heater 74.
Is disposed at a position facing the upper heater 72 with the glass ribbon 12 interposed therebetween.

FIG. 6 is a sectional view showing a schematic structure of a suction levitation device 80 according to the third embodiment, which is the same as the suction levitation device 22 of the first embodiment shown in FIGS. Or, similar members are denoted by the same reference numerals. The structure of the suction flotation device 80 is different from that of the suction flotation device 22 in that a blower (corresponding to a circulating means) 82 is provided, and the gas injected from the inner chamber 28 is forcibly circulated by the blower 82. That is the point. That is, a suction pipe 84 is connected to a lower side surface of the outer chamber 26, and the suction pipe 84 is penetrated by the casing 24 and connected to a suction port of the blower 82. Further, a supply pipe 86 is connected to the injection port of the blower 82, and the supply pipe 8 is connected to the supply pipe 86.
6 is connected to the inner chamber 28 through the casing 24 and the outer chamber 26.

Therefore, when the blower 82 is driven, the gas injected from the inner chamber 28 is sucked by the suction pipe 84.
Is sucked into the blower 82 via the, and the sucked gas is discharged into the inner chamber 28 and is ejected from the inner chamber 28. By controlling the injection amount of this gas, the floating amount of the glass ribbon can be adjusted. Note that the fan 32 shown in FIG. 6 operates in the same manner as the fan 32 shown in FIG.

As shown in FIG. 6, even if the blower 82, which is a dedicated circulating means, is disposed in the suction floating device 80, the same operation and effect as those of the suction floating device 22 of FIG. 1 can be obtained.

[0038]

As described above, according to the method and apparatus for transporting a glass ribbon according to the present invention, the suction floating means is disposed above the transport roller, and the non-contact transport operation of the glass ribbon by the suction floating means is performed. The glass ribbon is transported by switching or using the contact transport operation of the glass ribbon by the transport roller as necessary, so that the glass ribbon is not contacted without adversely affecting the atmosphere of the lehr or the float bath. Can be transported. Also,
At the start of production or when a trouble occurs, the non-contact conveyance operation is switched to the contact conveyance operation using conveyance rollers, so that the glass ribbon can be stably conveyed and secondary defects are prevented. Can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional structural view of a glass ribbon manufacturing apparatus to which a glass ribbon transport device according to an embodiment of the present invention is applied.

FIG. 2 is a cross-sectional view showing a first embodiment of the suction flotation device.

FIG. 3 is a perspective view showing an outer chamber and an inner chamber of the suction flotation apparatus shown in FIG. 2;

FIG. 4 is a block diagram showing a control system for switching between a non-contact transfer operation and a contact transfer operation.

FIG. 5 is a sectional view showing a second embodiment of the suction flotation device.

FIG. 6 is a cross-sectional view showing a third embodiment of the suction flotation device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Glass ribbon manufacturing apparatus, 18 ... Layer, 20 ... Conveyance roller, 22, 70, 80 ... Suction floating device (suction floating means), 24 ... Casing, 26 ... Outer chamber (outer chamber member), 28 ... Inner chamber ( Inner chamber member), 34: suction device (suction means), 36: communication pipe, 3
8 screw jack, 62 control device (switching device)

Claims (6)

[Claims] 1. A glass ribbon conveying method in which a glass ribbon in a high temperature state manufactured by a float method is carried out from a float bath and conveyed by a conveying roller, wherein the glass ribbon carried out of the float bath is transported by a conveying roller. Above, a suction floating means for sucking in a non-contact manner and transporting the whole or a part of the glass ribbon in a state of being floated from a transport roller is disposed, and the non-contact transport operation of the glass ribbon by the suction floating means, Switching the glass ribbon contact and transport operation by the transport roller as necessary,
A method for transporting a glass ribbon, wherein the glass ribbon is transported in combination. 2. A glass ribbon transport device for transporting a glass ribbon in a high temperature state manufactured by a float method from a float bath and transporting the glass ribbon by a transport roller, wherein the glass ribbon transported from the float bath is transported by a transport roller. A glass ribbon conveying device, wherein a suction floating means for sucking the glass ribbon in a non-contact manner and conveying the glass ribbon in a state of being floated from a conveying roller is provided. 3. A non-contact transfer operation of the glass ribbon by the suction floating means, wherein the glass ribbon transfer device includes:
3. The glass ribbon transfer device according to claim 2, further comprising a switching device that can switch and use the contact transfer operation of the glass ribbon by the transfer roller. 4. A suction levitation means, comprising: a casing having a passage opening through which the glass ribbon passes; and a suction opening means provided in the casing and having a gas suction surface facing a top surface of the glass ribbon. An outer chamber member having an opening formed therein, and an inner side provided inside the outer chamber member and having an injection opening for injecting gas toward the glass ribbon on a surface facing the upper surface of the glass ribbon. A chamber member, provided in the outer chamber member, sucking the gas injected from the injection opening of the inner chamber member and the gas flowing from outside the outer chamber member through the gas suction opening. Suction means for releasing the sucked gas into the casing; and an inner space of the inner chamber member and an interior of the casing. During a conveying apparatus for a glass ribbon according to claim 2, characterized in that it is composed of a communicating pipe to maintain the pressure of both the internal space in the same pressure by communicating. 5. A suction levitation means, comprising: a casing having a passage opening through which the glass ribbon passes; An outer chamber member having an opening formed therein, and an inner side provided inside the outer chamber member and having an injection opening for injecting gas toward the glass ribbon on a surface facing the upper surface of the glass ribbon. A chamber member, and suction means provided in the outer chamber member, for suctioning gas flowing from outside the outer chamber member through the gas suction opening, and discharging the sucked gas into the casing. And suctioning the gas ejected from the ejection opening of the inner chamber member while being provided in the outer chamber member. Conveying apparatus for a glass ribbon according to claim 2, wherein a circulation means for releasing a the gas into the inner chamber member, that is composed of. 6. The glass ribbon transport device according to claim 2, wherein the suction floating unit and the transport roller are relatively movably provided in a direction approaching and away from each other.