JP6358002B2 - Method for identifying roll for defect conveyance and method for preventing wrinkle generation in glass ribbon - Google Patents

Description

The present invention, particular methods of non degree conveying rolls, and a flaw prevention method in the glass ribbon.

  In an apparatus for producing a glass plate by the float method, molten glass melted in a glass melting furnace is supplied onto molten tin in a float bath and formed into a strip-like glass ribbon, and the formed glass ribbon is removed from the float bath. After being lifted and taken out by a lift-out roll, the glass is gradually cooled below the strain point temperature of the glass in a slow cooling furnace, further cooled to a temperature that can be cut with a cooling rare, and cut into a predetermined size by a cutting device.

  In the glass plate manufacturing apparatus, a glass ribbon conveyance device is installed in the slow cooling furnace and the cooling rare (see, for example, Patent Document 1). The glass ribbon transport device includes a plurality of transport rolls that transport the glass ribbon. The glass ribbon formed by the float bath is cooled while being conveyed at a predetermined speed by a conveying roll in the slow cooling furnace and the cooling rare. Since the slow cooling furnace must cool the hot glass ribbon immediately after forming with a gentle temperature gradient, it has a length of 20 to 200 m, for example, and the cooling rare is still 200 to 250 ° C. at the outlet of the slow cooling furnace. In order to cool the glass ribbon at a high temperature to about room temperature, a long cooling zone is required as well.

  While the glass ribbon is transported by such a slow cooling furnace and a cooling rare transport roll, the glass ribbon may be subjected to generation of wrinkles (including cracks) by the transport roll. This wrinkle is considered to be generated by deposits on the surface of the transport roll or wrinkles on the roll surface. The glass ribbon in which wrinkles are generated becomes a defective product and causes a decrease in quality and yield, and a thin glass plate is likely to be cracked during conveyance on a roll. For this reason, it is extremely important to quickly identify and take measures for the transport roll that generates wrinkles.

JP 2009-155164 A

  However, the slow cooling furnace and the cooling rare are each provided with a large number (for example, 40 to 1000) of conveyance rolls, and further, the surface of the conveyance roll has fine wrinkles and deposits. It is very difficult to specify whether or not it occurs in the transport roll. Therefore, a method is conceivable in which the transport rolls are lowered one by one in order and separated from the glass ribbon, and the transport roll in which the generation of wrinkles is eliminated is specified as the defective transport roll.

  However, in this method, it takes a long time to identify the defective transport roll, and wrinkles are generated during this time.

This invention is made | formed in view of the above, and it aims at providing the identification method of the roll for malfunction conveyance which can identify the roll for malfunction conveyance at an early stage.

To solve the above problems, the present invention provides a glass ribbon transport apparatus Ru comprising a plurality of conveying rolls for conveying the glass ribbon strip plate, trouble identifying the defect conveying rolls for generating flaw on the glass ribbon a particular method of conveying rollers, the glass ribbon transport device includes a moving mechanism of the order to move the one of the plurality of conveying rolls against the glass ribbon in the axial direction of the transporting roll, close to one of the plurality of conveying rolls against the glass ribbon, and a order of separation mechanism is separated, the carrying rolls two roll diameter of at least are different, each conveying roll rolls Based on the diameter and a plurality of wrinkle cycles appearing at intervals in the conveyance direction of the glass ribbon, the defective conveyance roll is identified, and the plurality of conveyance rolls Zureka By the check for position movement of flaw of the glass ribbon is moved relative to the glass ribbon in the axial direction, to provide a defect detection method of the transfer roll for identifying the defect conveying rolls.
Moreover, this invention is a glass ribbon conveyance apparatus provided with the some roll for conveyance which conveys a strip-shaped glass ribbon, The identification method of the roll for malfunction conveyance which identifies the roll for malfunction conveyance which generates a wrinkle in the said glass ribbon The glass ribbon transport device includes: a moving mechanism for moving any of the plurality of transport rolls relative to the glass ribbon in an axial direction of the transport roll; and the plurality of transport rolls. A contact / separation mechanism for approaching or separating any of the rolls from or to the glass ribbon, the rolls for conveyance differ in at least two roll diameters, the roll diameter of each roll for conveyance, and conveyance of the glass ribbon The defect conveying roll is identified based on a plurality of wrinkle cycles appearing at intervals in the direction, and one of the plurality of conveying rolls is By so spaced relative to the ribbon check for flaws of the glass ribbon provides a defect detection method of the transfer roll for identifying the defect conveying rolls.

ADVANTAGE OF THE INVENTION According to this invention, the identification method of the roll for malfunction conveyance which can identify the roll for malfunction conveyance at an early stage can be provided.

It is a side view of the plate glass manufacturing apparatus provided with the glass ribbon conveying apparatus which is one Embodiment of this invention. It is the elements on larger scale of the glass ribbon conveying apparatus of FIG. It is explanatory drawing (1) of the method of specifying the roll for defect conveyance. It is explanatory drawing (2) of the method of specifying the roll for defect conveyance. It is a side view of an example of a moving mechanism and an approach / separation mechanism. FIG. 6 is a rear view of FIG. 5.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments described below, and the following embodiments are not deviated from the scope of the present invention. Various modifications and substitutions can be made.

(First embodiment)
FIG. 1 is a side view of a plate glass manufacturing apparatus including a glass ribbon transport device according to an embodiment of the present invention. In the plate glass manufacturing apparatus by this float method, the molten glass obtained in the glass melting furnace 1 is supplied onto the molten tin of the float bath 2 and formed into a strip-shaped glass ribbon 5. The formed glass ribbon 5 is pulled up and taken out from the float bath 2 by a lift-out roll, and then gradually cooled to below the strain point temperature of the glass in the slow cooling furnace 3 while being transported by the glass ribbon transport device, and further cut by the cooling rare 4 It is cooled to a certain temperature and cut into a predetermined size by the cutting device 7. Such a float method is excellent in terms of quality and productivity for forming the glass ribbon 5, but may be performed by other forming methods (for example, a fusion method).

  The glass ribbon conveying device of the present invention is installed in the slow cooling furnace 3 and / or the cooling rare 4. This glass ribbon transport apparatus includes a plurality of types of transport rolls 6 having different roll diameters. Each conveyance roll 6 is rotated so that the peripheral speed is substantially the same, and conveys the glass ribbon 5 in a predetermined direction. The transport speed is substantially the same as the peripheral speed of each transport roll 6.

  According to this glass ribbon conveyance device, conveyance with the ridges based on the roll diameter of the conveyance roll 6 and a plurality of ridge periods appearing at intervals in the conveyance direction (longitudinal direction) of the glass ribbon 5. The roll 6 can be indexed and specified. A plurality of types of transport rolls may be arranged for each predetermined number, that is, a predetermined number.

  In the present invention, a plurality of types of transport rolls 6 having different roll diameters are disposed in the slow cooling furnace 3 and / or the transport roll 6 of the cooling rare 4 that may be wrinkled during the transport of the glass ribbon 5. Become. In particular, the transport roll 6 of the slow cooling furnace 3 that transports the glass ribbon 5 immediately after forming has a large influence on the glass ribbon 5 because the glass ribbon 5 has a high temperature, so that the wrinkles attached by the transport roll 6 bite into the glass. Therefore, it is preferable to prioritize the target. In addition, when the generation | occurrence | production situation of a flaw is known empirically, only for some conveyance rolls 6 with the large generation | occurrence | production frequency of each flaw of each of the slow cooling furnace 3 and the cooling rare 4 are used for several types of conveyance from which a roll diameter differs. A roll may be placed.

  In the present invention, it is not limited how many types of rolls having different roll diameters are disposed in the slow cooling furnace 3 and / or the cooling rare 4. However, if the number of roll diameters is small, the number of rolls having the same diameter is large. As a result, it takes time to detect and identify a defective transport roll that is a cause of wrinkles. On the other hand, when the types of transport rolls having different roll diameters increase, the burden of controlling the number of rotations for each roll diameter increases in order to match the transport speed. In addition, the management of the preliminary transport roll is increased.

  Next, an example of a method for identifying a defect transport roll will be described.

  First, the roll diameter of the transport roll that generates the wrinkles is calculated from the wrinkle cycle. Next, about half (for example, four) of a plurality of (for example, eight) conveyance rolls having the calculated roll diameter are lowered, and the remaining about half are rotated while being in contact with the glass ribbon. Thereafter, it is examined whether or not the wrinkle is generated, and a roll group that generates the wrinkle is specified by two choices according to the result.

  Here, the lowering width of the transport roll is preferably 2 to 50 mm, and more preferably 20 to 40 mm. If the lowering width of the transport roll is too small, the glass ribbon can be deformed by its own weight, so it is difficult to separate the transport roll from the glass ribbon. On the other hand, if the lowering width of the transport roll is too large, it is cumbersome to move the transport roll, and the glass ribbon transport device becomes larger.

  Next, about half (for example, two) of a plurality of (for example, four) conveying rolls belonging to the roll group generating wrinkles are lowered, and the remaining about half are rotated while being in contact with the glass ribbon. Thereafter, in the same manner, a group of rolls generating the wrinkles is specified by two options. This process is repeated, and finally a defective transport roll that generates wrinkles is specified.

  This method is more suitable as the number of transport rolls having the same diameter increases. In this method, when the number of transport rolls having the same diameter is a power of 2, it is efficient in identifying the fault transport roll. In addition, when the number of conveyance rolls is an odd number (for example, nine), you may reduce the number (for example, five or four) close to half.

  Here, when the rolls for conveyance of the same diameter are continuously arranged, it is desirable to lower every other roll in consideration of the load applied to the glass ribbon being conveyed. It is preferable to arrange 8 to 32 continuous rolls of the same diameter.

  FIG. 2 is an example in which four types of transport rolls 6a to 6d having different roll diameters are arranged in the order of the roll diameter (A) group to the small (D) group in the transport direction (arrow direction) of the glass ribbon 5. is there. The order of arrangement may be from the order of decreasing roll diameter, or may not be the order of roll diameter. Further, for example, the number of groups (A) may be divided and arranged as (A) (B) (A) (C) (D). Although only four rolls are arranged in each group in FIG. 2, it is preferable to arrange about 10 to 15 rolls. Note that the number of rolls arranged in each group may or may not be the same.

  When the rolls 6a to 6d for conveyance are arranged in this way, when the period of the ridge formed on the glass ribbon 5 is detected, the ridge is placed in a group having a roll diameter having the same circumferential length as the period. It is found that the generated transport roll is included. That is, the group including the transport roll that has generated wrinkles is determined. For example, if the (B) group is determined, the (B) group includes a transport roll that is a cause of wrinkles. Therefore, it is not necessary to specify the transport roll that is the cause of wrinkles from the entire transport roll as in the past, and (B) it is only necessary to specify from each transport roll of the group. The time required to specify the transport roll that is the cause of generation is theoretically reduced to one-fourth. In addition, (B) identification of the defect transport roll that is the cause of wrinkles from the group is performed by, for example, sequentially lowering the transport rolls in the group and separating them from the glass ribbon 5, and generating wrinkles in this state By observing the situation, the transport roll in which wrinkles are eliminated is identified as a defective roll. The identified transport roll is taken out from the transport line in a lowered state, and replaced with a normal transport roll.

  Furthermore, the relationship between the roll for conveyance from which a roll diameter differs, and the wrinkle attached to the glass ribbon 5 by this roll for conveyance is demonstrated. FIG. 3 shows the relationship between the wrinkle cycle and the conveying roll with the wrinkles. In order to make it easy to understand the relationship between the cycle of the ridges and the conveying rolls with the ridges, in FIG. 3, three types of conveying rolls 6a, 6b, and 6c having a roll diameter are arranged. When wrinkles are made on the lower surface of the glass ribbon 5 by the deposit 8 on the roll surface of the transport roll 6a, the wrinkles are generated every time the transport roll 6a makes one turn. It is attached like 8a with the same period (interval) as the circumferential length. Similarly, the period of the ridge 9b attached to the lower surface of the glass ribbon 5 by the deposit 9 on the roll surface of the transport roll 6b is the same as the circumferential length determined by the roll diameter of the transport roll 6b. The period of the ridge 10c attached to the lower surface of the glass ribbon 5 by the deposit 10 on the roll surface is the same as the circumferential length determined by the roll diameter of the transport roll 6c.

  Therefore, it can be easily understood that the transport roll with the flange 8a is the transport roll 6a from the cycle of the flange 8a generated on the glass ribbon 5. Similarly, it can be seen that the rolls 6b and 6c are for conveyance from the period of the flanges 9b and 10c.

  As described above, according to this method for identifying a defect transporting roll, it is possible to identify a defect transporting roll that becomes a cause of wrinkles that have required a long time in a fraction of the time. Therefore, the yield of the glass ribbon can be improved.

(Second Embodiment)
Next, another example of a method for identifying a defective transport roll will be described with reference to FIG. In this example, all the rolls for conveyance are rotating while contacting the lower surface of a glass ribbon, while specifying the roll for malfunction conveyance.

  FIG. 4 is an explanatory diagram (2) of a method for identifying a defective transport roll. In FIG. 4, the state shown by the solid line is the state before the transport roll is moved relative to the glass ribbon in the axial direction (that is, the width direction of the glass ribbon), and the state shown by the two-dot chain line is the shaft of the transport roll. It is a state after moving with respect to the glass ribbon in the direction (arrow A direction).

  As shown in FIG. 4, the strip-like glass ribbon 5 is conveyed on a conveyance roll 6. Therefore, if the deposit 14 is attached to the outer peripheral surface of the transport roll 6, a ridge 15 is formed on the surface of the glass ribbon 5 every time the transport roll 6 rotates once. This ridge 15 appears periodically with an interval L in the conveyance direction (arrow B direction) of the glass ribbon 5. Since the interval L substantially coincides with the outer peripheral length of the transport roll 6, it is determined by the roll diameter (outer diameter) of the transport roll 6. When this transport roll 6 is moved relative to the glass ribbon 5 in the axial direction (arrow A direction), the position of the flange 15 of the glass ribbon 5 also moves in the arrow A direction. At this time, the travel distance W1 of the flange 15 is substantially the same as the travel distance W2 of the transport roll 6.

  Therefore, when specifying the defective transport roll, first, the roll diameter of the transport roll generating the wrinkle is calculated from the wrinkle cycle (that is, the interval L). Next, about half (for example, four) of a plurality of (for example, eight) transport rolls having the calculated roll diameter are moved by a predetermined amount with respect to the glass ribbon in the respective axial directions (in the direction of arrow A). Thereafter, it is checked whether or not the position of the wrinkle of the glass ribbon moves by the predetermined amount in the direction of arrow A, and the roll group generating the wrinkle is specified in two options according to the result.

  Here, the axial movement distance W2 of the transport roll is preferably 0.5 to 5 cm, and more preferably 1 to 2 cm. If the movement distance W2 is too small, it is difficult to confirm the presence or absence of movement of the bag. On the other hand, if the moving distance W2 is too large, it is cumbersome to move the transport roll, and the glass ribbon transport device becomes large.

  In order to visually detect the presence / absence of movement of the scissors, for example, as shown in FIG. 4, a mark member 18 that is movable in the direction parallel to the axial direction of the transport roll 6 is provided above the glass ribbon 5. It is desirable to be. The mark member 18 may be positioned before the transport roll 6 is moved so that the flange 15 passes under the mark member 18.

  Next, about half (for example, two) of a plurality of (for example, four) conveyance rolls belonging to the roll group generating wrinkles are moved relative to the glass ribbon in the respective axial directions. Thereafter, in the same manner, a group of rolls generating the wrinkles is specified by two options. This process is repeated, and finally a defective transport roll that generates wrinkles is specified.

  This method is more suitable as the number of transport rolls having the same diameter increases. In this method, when the number of transport rolls having the same diameter is a power of 2, it is efficient in identifying the fault transport roll. When the number of transport rolls is an odd number (for example, 9), a number close to half (for example, 5 or 4) may be moved in the axial direction.

  According to this method, when the defective transport roll is specified, the transport roll is moved relative to the glass ribbon in the axial direction, so that all the transport rolls are in contact with the lower surface of the glass ribbon. Therefore, it is possible to suppress the glass ribbon from being deformed by its own weight.

  The defective conveyance roll identified in this way is spaced downward with respect to the glass ribbon being conveyed. Thereby, it can prevent that a wrinkle generate | occur | produces in a glass ribbon. Thereafter, the defective transport roll is brought into contact with the glass ribbon after repair such as surface polishing is performed at an appropriate time, or after replacement with a normal transport roll. In this way, when repairing or exchanging, the trouble transporting roll is separated from the glass ribbon to facilitate the work.

  In addition, in order to control that a glass ribbon deform | transforms excessively with dead weight, the auxiliary | assistant roll (not shown) may be provided between two adjacent conveyance rolls. The upper end of the auxiliary roll is disposed below the upper end of the transport roll that transports the glass ribbon.

  In the present embodiment, it is assumed that any of the plurality of transport rolls having a predetermined roll diameter is repeatedly moved in the axial direction with respect to the glass ribbon to identify the defective transport roll. It is not limited to this. For example, by separating any of three or more transport rolls having a predetermined roll diameter from the glass ribbon, the candidate diaphragm for the defective transport roll is brought into contact with all of the remaining two or more candidates. In such a state, any of the remaining two or more candidates may be moved in the axial direction with respect to the glass ribbon to identify the defective transport roll. Further, by moving any of the three or more transport rolls having a predetermined roll diameter in the axial direction with respect to the glass ribbon, the candidate narrowing of the fault transport roll, and any of the remaining two or more candidates You may identify the roll for trouble conveyance by separating with respect to a glass ribbon.

(Third embodiment)
The present embodiment relates to a moving mechanism and a contact / separation mechanism provided in the glass ribbon transport device. The moving mechanism is a mechanism that is connected to any of a plurality of transport rolls and moves the connected transport rolls relative to the glass ribbon in the axial direction. The contact / separation mechanism is a mechanism that is connected to any of a plurality of transport rolls, and approaches and separates the connected transport rolls from the glass ribbon.

  The moving mechanism may be connected to any of a plurality of transport rolls having substantially the same roll diameter, and may be connected to each of these transport rolls. Thereby, workability | operativity at the time of specifying the roll for defect conveyance can be improved.

  In addition, it is desirable that the moving mechanism is connected to a transport roll that is liable to have a problem. Examples of the transport roll that is likely to cause a failure include a transport roll disposed in the upstream region of the slow cooling furnace.

  Similarly, the contact / separation mechanism may be connected to any of a plurality of transport rolls having substantially the same roll diameter, and may be connected to each of these transport rolls. Thereby, workability | operativity at the time of specifying the roll for defect conveyance can be improved.

  In addition, one contact mechanism may be installed in each of all the conveyance rolls irrespective of a roll diameter. Thereby, the workability | operativity at the time of repairing and exchanging a conveyance roll can be improved.

  Hereinafter, specific examples of the moving mechanism and the contact / separation mechanism will be described with reference to FIGS. 5 and 6, but the present invention is not limited thereto.

  The contact / separation mechanism 20 is a mechanism for making the transport roll 6 approach and separate from the glass ribbon 5. For example, as shown in FIGS. 5 and 6, the contact / separation mechanism 20 includes a gantry 21, a shaft 22, an arm 23, a link 24, and the like. Each of these constituent members 21 to 24 is provided on each side of the transport roll 6 in the axial direction.

  The gantry 21 is fixed to a furnace wall such as the slow cooling furnace 3 or the cooling rare 4. One end of the arm 23 is supported by the gantry 21 via the shaft 22. The central portion of the arm 23 rotatably supports the rotation shaft 61 of the transport roll 6. The other end of the arm 23 is suspended from the gantry 21 via a link 24. The link 24 is configured to be movable with respect to the gantry 21 in the axial direction (vertical direction in FIG. 5) and the axial orthogonal direction (horizontal direction in FIG. 5) of the link 24.

  According to the contact / separation mechanism 20, the arm 23 is rotated around the shaft 22 in the direction of arrow C by manually adjusting the relative position between the gantry 21 and the link 24 (or using an appropriate driving device). The transport roll 6 supported by the arm 23 via the rotating shaft 61 can be moved closer to and away from the glass ribbon 5.

  The moving mechanism 30 is a mechanism for moving the transporting roll 6 relative to the glass ribbon 5 in the axial direction (arrow D direction). For example, as shown in FIGS. 5 and 6, the moving mechanism 30 includes a gantry 21, a shaft 22, an arm 23, a link 24, and the like.

  The shaft 22 is configured so as not to move with respect to the gantry 21 in the axial direction (arrow D direction) of the transport roll 6. One end of the arm 23 is configured to be movable with respect to the shaft 22 in the arrow D direction. The central part of the arm 23 is configured to be movable integrally with the rotary shaft 61 of the transport roll 6 in the direction of arrow D. The link 24 is configured to be movable in the direction of the arrow D while the other end is fixed to the gantry 21.

  Thus, in the moving mechanism 30, the shaft 22 cannot move in the direction of arrow D with respect to the gantry 21 (and thus the glass ribbon 5), and the arm 23, the rotating shaft 61, and the transport roll 6 are in the direction of the arrow. It is configured to be movable integrally in the D direction.

  According to this moving mechanism 30, the conveyance roll 6 is moved relative to the glass ribbon 5 in the direction of the arrow D by manually pressing the conveyance roll 6 in the direction of the arrow D (or with an appropriate driving device). It is possible.

  In this embodiment, the shaft 22 cannot move in the arrow D direction with respect to the gantry 21 (and thus the glass ribbon 5), and the arm 23, the rotation shaft 61, and the transport roll 6 are in the arrow D direction. However, the present invention is not limited to this. For example, the shaft 22 and the arm 23 cannot move in the direction of arrow D with respect to the gantry 21 (and thus the glass ribbon 5), and the rotating shaft 61 and the transport roll 6 move integrally in the direction of arrow D. It may be possible. In other words, the rotation shaft 61 may be movable relative to the arm 23 in the direction of arrow D. In this case, limiting means such as a stopper for limiting the moving range of the transport roll 6 in the direction of arrow D may be provided.

  A drive system 40 for rotating the conveyance roll 6 is connected to one end side in the axial direction of the conveyance roll 6. As shown in FIGS. 5 and 6, the drive system 40 includes a roll side gear 41, an intermediate gear 42, a drive side gear 43, a rotation shaft 44, a drive device 45, and the like.

  The roll side gear 41 is coaxially mounted on the rotation shaft 61 of the transport roll 6 and rotates together with the transport roll 6. The roll side gear 41 is configured to be movable with respect to the intermediate gear 42 in the arrow D direction. The teeth of the roll side gear 41 extend obliquely with respect to the axis.

  The intermediate gear 42 is interposed between the roll side gear 41 and the drive side gear 43. The intermediate gear 42 is coaxially connected to the shaft 22 and is rotatable around the axis of the shaft 22. The axis of the intermediate gear 42 is arranged in parallel with the axis of the roll side gear 41 and is arranged perpendicular to the axis of the drive side gear 43.

  The drive side gear 43 is coaxially connected to the rotary shaft 44. The rotating shaft 44 is connected to a driving device 45 such as an electric motor.

  The driving device 45 is fixed to the gantry 21. The drive device 45 rotationally drives the transport roll 6 through the rotation shaft 44, the drive side gear 43, the intermediate gear 42, and the roll side gear 41 under the control of a control device such as a microcomputer.

  According to this drive system 40, when the conveying roll 6 is brought into and out of contact with the glass ribbon 5 using the contact / separation mechanism 20, the intermediate gear 42 and the roll side gear 41 are engaged with each other. 6 can be driven to rotate. Therefore, when contacting / separating the transport roll 6 with the glass ribbon 5 using the contact / separation mechanism 20, the peripheral speed of the transport roll 6 can be adjusted to the transport speed of the glass ribbon 5, and the glass ribbon being transported 5 can be reduced.

  In this embodiment, when the rotational force of the drive device 45 is transmitted to the transport roll 6, the transport roll 6 is pressed in the axial direction. This is because the teeth of the roll side gear 41 extend obliquely with respect to the axis as described above. Therefore, a positioning plate (not shown) that prevents the transport roll 6 from moving in the axial direction is provided on the other axial end side of the transport roll 6. The positioning plate is movably fixed to the gantry 21 and is moved as necessary.

  As described above, the glass ribbon that is continuously conveyed has been described as an example. However, the present invention is not limited to this, and the present invention can also be applied to conveyance of a glass ribbon (glass plate) cut into a rectangle or the like. However, in consideration of early detection and prevention of wrinkles and the like, it is preferably applied to a glass ribbon that is continuously conveyed.

  INDUSTRIAL APPLICABILITY The present invention can be used as a slow cooling furnace for a sheet glass manufacturing apparatus and a glass ribbon transport apparatus in a cooling rare, and is particularly suitable as a slow cooling furnace for a plate glass manufacturing apparatus by a float method and a glass ribbon transport apparatus in a cooling rare.

DESCRIPTION OF SYMBOLS 1 Glass melting furnace 2 Float bath 3 Slow cooling furnace 4 Cooling rare 5 Glass ribbon 6 Transport roll 6a Transport roll 6b Transport roll 6c Transport roll 6d Transport roll 7 Cutting device 8 Deposit 8a ８ 9 Deposit 9b 疵 10 With Kimono 10c 疵 14 Deposit 15 疵 20 Contact / separation mechanism 30 Movement mechanism

Claims (6)

In the glass ribbon transport apparatus Ru comprising a plurality of conveying rolls for conveying the glass ribbon strip plate, a trouble particular method of conveying rolls for identifying the defect conveying rolls for generating flaw on the glass ribbon,
The glass ribbon conveying device is
A moving mechanism of the order to move the one of the plurality of conveying rolls against the glass ribbon in the axial direction of the transporting roll,
Close to one of the plurality of conveying rolls against the glass ribbon, and a order of separation mechanism is separated,
The transport roll has at least two different roll diameters,
Based on the roll diameter of each transport roll and the cycle of a plurality of wrinkles appearing at intervals in the transport direction of the glass ribbon, the defective transport roll is identified,
A defective conveying roll that identifies the defective conveying roll by moving any of the plurality of conveying rolls in the axial direction with respect to the glass ribbon and examining whether or not the position of the ridge of the glass ribbon is moved. How to identify. The malfunction conveyance roll according to claim 1 , wherein any of the plurality of conveyance rolls is separated from the glass ribbon and the presence or absence of wrinkles in the glass ribbon is examined to identify the malfunction conveyance roll. Identification method. In a glass ribbon transport device comprising a plurality of transport rolls for transporting a belt-shaped glass ribbon, a method for identifying a fault transport roll for identifying a fault transport roll that generates wrinkles on the glass ribbon,
The glass ribbon conveying device is
A moving mechanism for moving any of the plurality of transport rolls relative to the glass ribbon in the axial direction of the transport roll;
A contact / separation mechanism for approaching or separating any of the plurality of transport rolls from the glass ribbon;
The transport roll has at least two different roll diameters,
Based on the roll diameter of each transport roll and the cycle of a plurality of wrinkles appearing at intervals in the transport direction of the glass ribbon, the defective transport roll is identified,
The identification method of the defect conveyance roll which identifies the said defect conveyance roll by spacing apart any of the said several conveyance roll with respect to the said glass ribbon, and investigating the presence or absence of the wrinkle of the said glass ribbon. The contacting / separating mechanism is
A stand fixed to a slow cooling furnace or a cooling rare furnace wall;
One end portion is supported by the gantry via a shaft, the central portion rotatably supports the rotating shaft of the transport roll, and the other end portion includes an arm suspended from the gantry via a link. ,
The link failure particular method of conveying roll according to any one of 請 Motomeko 1-3 that is configured to be movable in the axial direction perpendicular to the frame. The moving mechanism is
A stand fixed to a slow cooling furnace or a cooling rare furnace wall;
One end portion is supported by the gantry via a shaft, the central portion rotatably supports the rotating shaft of the transport roll, and the other end portion includes an arm suspended from the gantry via a link. ,
The link specific method of defect conveying roll according to any one of the axial direction 請 Motomeko that is configured to be movable relative to the frame 1-4. The trouble conveying rolls identified by the method according to any one of claims 1 to 5, by away from the said glass ribbon, a glass to prevent the flaw is generated in the glass ribbon How to prevent wrinkles on the ribbon.

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