TW201904715A - Method for manufacturing glass plate, and device for manufacturing glass plate - Google Patents

Abstract

A device 1 for manufacturing a glass plate comprises a conveyance mechanism 2 that conveys a glass plate G in the sequence of: an end surface machining step for machining the end surfaces of the glass plate G in a horizontal orientation while a liquid is supplied; an orientation alteration step for altering the orientation of the horizontally oriented glass plate G to an inclined orientation P2; and a washing step for washing the glass plate G in the inclined orientation P2. The device 1 for manufacturing a glass plate comprises a sampling mechanism 3 for holding the glass plate G in the inclined orientation P2 between the orientation alteration step and the cleaning step, and transferring the glass plate G from the conveyance mechanism 2 to a prescribed placement surface 4a.

Description

Glass plate manufacturing method and glass plate manufacturing device

The present invention relates to a method for producing a glass sheet and a device for producing a glass sheet.

In recent years, in glass plates (glass substrates) used for flat panel displays such as liquid crystal display devices or organic electroluminescence (EL) display devices, the specifications required by customers have become stricter and stricter, and various quality management changes have been made. Indispensable.

On the other hand, in order to achieve higher manufacturing efficiency with respect to the outer dimensions of the glass sheet, for example, a large-sized glass sheet of 1000 mm × 1000 mm or more has become mainstream.

Based on such a situation, in the manufacturing step of the glass sheet, for example, after the completion of each step, the processed glass sheet is subjected to extraction inspection, thereby improving the quality of the glass substrate as the final product.

In addition, for example, a device for extracting a glass plate from a transport mechanism including a belt conveyor or the like is proposed (for example, see Patent Document 1). [Prior Art Document] [Patent Literature]

Patent Document 1: Chinese Utility Model Announcement No. 205771976

[Problem to be Solved by the Invention] In order to perform the end surface processing step of the glass sheet while supplying the liquid, the liquid is adhered to the glass sheet subjected to the end surface processing step. In the case of a glass plate having a small thickness and a large surface area, the glass plate is easily bent and broken due to the weight of the liquid adhering to the glass plate. Therefore, in the case where the glass sheet is taken after the end surface processing, it is desirable to reduce the amount of liquid adhering to the glass sheet. Further, the liquid supplied in the end surface processing step may be, for example, a cleaning liquid, a grinding liquid, a polishing liquid or the like. The cleaning liquid is supplied to a platen or the like for holding the glass plate during end surface processing, and the cleaning liquid is, for example, water or a liquid obtained by adding a lotion to water. The grinding liquid and the polishing liquid are supplied for the purpose of cooling the grinding stone or removing the cutting powder, and the grinding liquid and the polishing liquid are, for example, water or a liquid obtained by adding a lubricant to water.

In view of the above-described situation, in the manufacturing process of the glass sheet, it is a technical problem to reduce the amount of liquid adhering to the glass plate extracted after the end surface processing step. [Means for solving the problem]

The method for producing a glass sheet according to the present invention, which is created to solve the above problems, is a method of conveying a glass sheet by a conveying mechanism in the order of an end surface processing step, a posture changing step, and a washing step, wherein the end surface processing step supplies liquid to one side a step of processing an end surface of the glass plate in a horizontal posture, wherein the posture changing step is a step of changing a glass plate posture in a horizontal posture to an inclined posture, and the cleaning step is a step of cleaning the glass plate in the inclined posture The method for producing a glass sheet is characterized in that an extraction step of holding the glass sheet in an inclined posture by the extraction mechanism and transferring the self-transporting mechanism to the predetermined placement surface is provided between the posture changing step and the washing step.

In this configuration, the glass plate is held in an inclined posture by the extraction mechanism and transferred from the transfer mechanism to the placement surface. Since the inclination angle of the glass plate with respect to the horizontal plane is greater than the horizontal posture, the liquid adhering to the glass plate is likely to fall from the glass plate during the process of transferring the glass plate by the extraction mechanism. Thus, the amount of liquid adhering to the extracted glass plate can be reduced.

In the above configuration, the placement surface may be disposed on the side of the conveyance mechanism that is inclined above the inclined posture.

According to this configuration, when the glass sheet is moved from the conveying mechanism to the placing surface, the glass sheet is moved to the side above the inclined posture in the inclined posture. Therefore, the inertial force acts on the liquid so that the liquid adhering to the glass plate moves toward the lower side of the inclined posture, and the liquid is easily detached from the glass plate.

In the above configuration, the placement surface may be disposed on the side of the conveyance mechanism that is inclined downward in the inclined posture.

According to this configuration, when the glass sheet is moved from the conveying mechanism to the placing surface, it is not necessary to pass the glass sheet over the portion on the upper side of the inclination of the conveying mechanism, so that the amount of movement of the glass sheet can be reduced.

In the above configuration, the extraction mechanism may adsorb the glass plate by a plurality of adsorption pads.

According to this configuration, the glass plate of a large size can be stably held by the extraction mechanism. In addition, it is easy to hold and release the glass plate.

In the above configuration, the plurality of adsorption pads may be connected to the vacuum system via the valve portion, and the valve portion is automatically opened in a state where the adsorption pad contacts the glass plate, and is closed in a state where the adsorption pad is not in contact with the glass plate.

With this configuration, when the adsorption pad is adsorbed to a glass plate (ruptured glass plate) or a small-sized glass plate lacking a part, the valve portion connected to the adsorption pad at a position where the glass plate is not present is closed, and The vacuum of the vacuum system is maintained. Further, the valve portion connected to the adsorption pad located at the position where the glass plate exists is opened, so that the adsorption pad is surely adsorbed to the glass plate. Thus, it is possible to surely adsorb and hold a part of the glass plate or the small-sized glass plate by the adsorption pad. Further, in the case where the adsorption pad is adsorbed to a small-sized glass plate, it is not necessary to manually close the operation of closing the valve portion of the adsorption pad located at a position where the glass plate is not present.

In the above configuration, the plurality of adsorption pads may be disposed so as to be adsorbed to the peripheral edge portions of the glass sheets of various sizes.

According to this configuration, when any one of a plurality of sizes of glass sheets is adsorbed, since the peripheral portion of the glass sheet is adsorbed, it is possible to reliably hold the glass sheets of various sizes. Further, since the position at which the adsorption pad is adsorbed is the peripheral portion of the glass plate, the glass plate can be stably adsorbed and held by a small number of adsorption pads.

In the above configuration, the mounting surface may be an inclined surface on which the glass plate can be placed in an inclined posture.

According to this configuration, the liquid adhering to the glass plate can be easily separated from the glass plate on the mounting surface.

In the above configuration, the mounting surface may be provided on the bogie, and the bogie may be configured to be capable of changing the angle of the mounting surface, and the presence or absence of the bogie and the inclination angle of the mounting surface may be detected by the sensor. Appropriate or not.

According to this configuration, after the presence of the trolley is detected by the sensor, the glass plate can be placed on the mounting surface of the trolley. Further, after the sensor detects that the inclination angle of the mounting surface of the trolley is appropriate, the glass plate can be placed on the mounting surface of the trolley. Therefore, the glass plate can be surely placed on the mounting surface of the trolley. Further, it is possible to prevent the case where the extraction step is performed in a state where the trolley is not present or the inclination angle of the placement surface is not appropriate, and the extracted glass sheet is damaged or the device is damaged.

In the above configuration, the receiving tray that supports the end surface of the glass sheet may be provided on the side of the mounting surface that is inclined downward, and the water conduit is disposed directly below the receiving tray. In this case, the liquid detached from the glass plate may be discharged from the plurality of through holes of the receiving tray and dropped to be supplied to the water conduit.

If it is this configuration, the remaining liquid can be removed from the glass plate, and the removed liquid can be collected by the water conduit.

In the above configuration, the receiving tray that supports the end surface of the glass sheet may be provided on the side of the mounting surface that is inclined downward, and a discharge port for discharging the liquid may be disposed. In this case, the liquid detached from the glass sheet can also flow along the receiving tray and be guided to the discharge port.

According to this configuration, the remaining liquid can be removed by the discharge port while being collected by the receiving tray.

Moreover, the apparatus for manufacturing a glass sheet of the present invention, which is created to solve the above problems, is an apparatus including a transport mechanism for transporting a glass sheet in the order of an end surface processing step, a posture changing step, and a washing step, wherein the end surface processing step is one side The step of processing the supply liquid to face the end surface of the glass plate in the horizontal posture, wherein the posture changing step is a step of changing the posture of the glass plate in the horizontal posture to the inclined posture, wherein the cleaning step is to clean the glass plate in the inclined posture In the step of manufacturing the glass sheet, the apparatus for manufacturing the glass sheet is provided with an extraction mechanism that holds the glass sheet in an inclined posture between the posture changing step and the washing step and transfers the self-transporting mechanism to the predetermined placing surface.

According to this configuration, substantially the same actions and effects as those of the first configuration of the method for producing a glass sheet can be obtained. [Effects of the Invention]

As described above, according to the present invention, in the manufacturing step of the glass sheet, the amount of liquid adhering to the glass plate extracted after the end face processing step can be reduced.

Hereinafter, embodiments for carrying out the invention will be described based on the drawings.

As shown in FIG. 1 , the glass sheet manufacturing apparatus 1 used in the method for producing a glass sheet according to the embodiment of the present invention includes a transport mechanism 2 that transports the glass sheet G in a predetermined transport direction. The transport mechanism 2 includes, for example, a belt conveyor or a roller conveyor. The transport mechanism 2 includes a first transport mechanism 2a, a second transport mechanism 2b, and a third transport mechanism 2c. As shown by the white arrow, the glass sheet G is sequentially transported by the first transport mechanism 2a, the second transport mechanism 2b, and the third transport mechanism 2c. The glass plate G is a rectangular flat plate, and is conveyed in a state in which the side (for example, the long side) is along the conveyance direction.

In the middle of the conveyance path of the first conveyance mechanism 2a, the end surface processing step S1 of supplying the liquid to the end surface of the glass sheet G is performed. In the middle of the conveyance path of the third conveyance mechanism 2c, the cleaning step S3 of cleaning the glass sheet G using the cleaning liquid is performed on the glass plate G. The end surface processing and cleaning can be performed while the glass sheet G is being conveyed, or can be performed while the conveyance is stopped.

As shown in FIG. 2A, the glass sheet G is conveyed in the horizontal posture P1 in the first conveying mechanism 2a. On the other hand, as shown in FIG. 2C, the glass sheet G is conveyed in the inclined posture P2 in the third conveying mechanism 2c. Further, as shown in FIG. 2B, the posture of the glass sheet G is changed from the horizontal posture P1 in the first conveying mechanism 2a to the inclined posture P2 in the third conveying mechanism 2c in the second conveying mechanism 2b. In other words, the posture change step S2 of changing the glass plate G from the horizontal posture P1 posture to the inclined posture P2 is performed on the glass sheet G conveyed by the second conveyance mechanism 2b. Further, since the glass sheet G in the third conveying mechanism 2c is in the inclined posture P2, the washing liquid used in the washing step S3 is quickly dropped from the glass sheet G.

In the first conveying mechanism 2a, the second conveying mechanism 2b, and the third conveying mechanism 2c, the conveying direction of the glass sheet G is along the horizontal direction. In the second conveying mechanism 2b and the third conveying mechanism 2c, the glass sheet G in the inclined posture P2 is inclined with respect to the horizontal plane H by being rotated around an axis parallel to the conveying direction. The inclination angle α is, for example, 4° to 6°. In addition, regarding the description of the drawings, the inclination angle α is slightly larger for the sake of easy understanding (the same applies to the following drawings). Further, in the first conveying mechanism 2a and the second conveying mechanism 2b, the inclination angle α of the glass sheet G in the horizontal posture P1 is 0°.

Further, as shown in FIG. 3, the manufacturing apparatus 1 includes an extracting mechanism 3 that extracts the glass sheet G from the second transport mechanism 2b between the posture changing step S2 and the washing step S3, and the loading is extracted by the extracting mechanism 3. The glass plate G of the trolley 4. In other words, between the posture changing step S2 and the washing step S3, an extraction step of holding the glass sheet G by the extraction mechanism 3 and transferring it to the carriage 4 from the second conveying mechanism 2b is provided. 3 is a side view of the same direction as the arrow of the Y-Y line of FIG. 1. Moreover, for the sake of convenience, the side of the second conveyance mechanism 2b is set to the front side, and the side of the carriage 4 is set to the rear side.

The second transfer mechanism 2b is supported by the support mechanism 2d. Further, the second conveyance mechanism 2b itself changes from the horizontal posture to the inclined posture, thereby changing the glass sheet G from the horizontal posture P1 posture to the inclined posture P2. The mechanism for changing the posture of the second conveying mechanism 2b can be manufactured by a known technique (for example, refer to Japanese Laid-Open Patent Publication No. Hei 9-226916).

The extraction mechanism 3 includes a gantry 5, a front and rear moving portion 6, an up and down moving portion 7, and an adsorption pad 8. The gantry 5 is provided with a rail portion 5a extending in the front-rear direction (lateral direction), and is configured such that the front-rear moving portion 6 advances and retreats along the rail portion 5a. The vertical movement portion 7 is supported by the front-rear movement portion 6 via the support portion 7a, and is configured such that the vertical movement portion 7 moves up and down by moving the support portion 7a up and down with respect to the front-rear movement portion 6.

A plurality of adsorption pads 8 are disposed on the lower side of the vertical movement portion 7. The adsorption pad 8 is adsorbed to the glass plate G and used to adsorb the glass plate G to the holder. In the state in which the vertical movement portion 7 is lowered, the adsorption pad 8 can be used to adsorb the glass sheet G in the inclined posture P2 in an inclined posture. The front-rear moving portion 6 and the vertical moving portion 7 are for moving the glass sheet G adsorbed to the adsorption pad 8 in the inclined posture P2.

As shown in FIG. 4, the plurality of adsorption pads 8 are disposed on the vertical movement portion 7 so as to be adsorbed to the peripheral portions of the glass sheets G, the glass sheets G1, and the glass sheets G2 of various sizes. In Fig. 4, a plurality of adsorption pads 8 are formed in a row in the longitudinal direction, and rows are formed in the lateral direction.

As shown in FIG. 5, the plurality of adsorption pads 8 are connected to the pipe 10 via the first valve portion 9a. The pipe 10 is connected to the negative pressure generating source 11 via the second valve portion 9b. The negative pressure generating source 11 may include, for example, a vacuum pump, and a reservoir tank that maintains the inside as a negative pressure may be disposed between the vacuum pump and the second valve portion 9b as needed. Further, the pipe 10 is connected to the compressed air source 12 via the third valve portion 9c. The compressed air source 12 may include, for example, a compressor, and a storage tank that maintains the inside as a positive pressure between the compressor and the third valve portion 9c as needed. When the third valve portion 9c is closed and the second valve portion 9b is opened, the vacuum generating system 11 and the piping 10 constitute a vacuum system. On the other hand, when the second valve portion 9b is closed and the third valve portion 9c is opened, high-pressure air flows into the pipe 10 from the compressed air source 12.

The first valve portion 9a is automatically opened in a state where the opening end portion 8a of the adsorption side of the adsorption pad 8 contacts the glass sheet G, and is closed in a state where the opening end portion 8a of the adsorption side of the adsorption pad 8 does not contact the glass sheet G. . Such a first valve portion 9a may include, for example, a suction assist valve manufactured by SMC Corporation or the like.

As shown in FIG. 3, the mounting surface 4a on which the glass plate G moved by the front-back moving part 6 and the up-and-down moving part 7 is mounted in the trolley 4 is provided. The mounting surface 4a is provided in the mounting portion 4b. The mounting surface 4a is an inclined surface on which the glass plate G can be placed in the inclined posture P2. The mounting surface 4a of the glass sheet G on which the inclined posture P2 is placed is located at a lower position than the conveying surface 2e of the conveying mechanism 2 of the glass sheet G that supports the inclined posture P2. The mounting surface 4a of the glass sheet G on which the inclined posture P2 is placed and the conveying surface 2e of the glass sheet G that supports the inclined posture P2 are inclined in the same manner as the glass sheet G in the inclined posture P2. In order to prevent the glass sheet G from falling from the mounting surface 4a, a plate-shaped receiving tray 4c is provided on the side of the mounting surface 4a which is inclined downward. The inclination angle of the mounting surface 4a is configured to be changeable. Thereby, the mounting portion 4b (glass plate G) can be vertically positioned as shown by a broken line in FIG. 3 by setting the inclination angle of the glass plate G and the mounting surface 4a to, for example, 50 to 85 degrees. posture. Further, although not shown in the drawings, the placing portion 4b (glass plate G) may be in a horizontal posture. Further, the inclination angle of the placement surface 4a may be configured so as not to be changed.

The extracting mechanism 3 is provided with a sensor 13 supported by a supporting member (not shown). The sensor 13 includes, for example, a proximity sensor or the like. The presence or absence of the mounting portion 4b of the trolley 4 can be detected by the sensor 13. In addition, the sensor 13 can further detect the appropriateness of the tilt angle of the mounting surface 4a. That is, it is possible to detect whether or not the inclination angle of the placement surface 4a is the same as the inclination angle of the glass sheet G in the inclined posture P2. With regard to these detections, for example, by providing the sensor 13 at a position where only the inclination angle of the placement surface 4a and the inclination angle of the glass sheet G of the inclined posture P2 are the same, the position of the placement portion 4b can be detected. .

In order to remove and collect the liquid remaining in the glass sheet G in a state where the placing portion 4b is in the inclined posture, the receiving tray 4c has a plurality of through holes (not shown), and the water conduit 4d and the tank 4e are disposed. When the placing portion 4b is in the inclined posture, the water conduit 4d is located directly below the receiving tray 4c. Further, the water conduit 4d and the tank 4e are connected by a pipe (for example, a hose). In such a configuration, the liquid remaining in the glass sheet G is discharged from the plurality of through holes of the receiving tray 4c as it flows down. The liquid discharged from the through hole is supplied to the water conduit 4d by dropping. The liquid supplied to the water conduit 4d is collected and recovered in the tank 4e.

In a state in which the placing portion 4b is in the vertical posture, a tray 4f is disposed in order to remove and collect the liquid remaining in the glass sheet G. When the placing portion 4b is in the vertical posture, the tray 4f is located directly below the receiving tray 4c. In such a configuration, the liquid remaining in the glass sheet G is discharged from the plurality of through holes of the receiving tray 4c as it flows down. The liquid discharged from the through hole is dropped and recovered in the tray 4f.

Next, the operation of the main part of the manufacturing apparatus 1 will be described with reference to Figs. 6 to 14 . Further, since the water conduit 4d and the tank 4e are not related to the operation of the main part of the manufacturing apparatus 1, the illustration is omitted in FIGS. 6 to 14.

As shown in Fig. 6, the trolley 4 does not initially exist, and the extraction mechanism 3 is in a standby state. The front and rear moving portions 6 are at the retracted position Lb, and the vertical moving portion 7 is at the raised position Lu. Further, the second transport mechanism 2b performs a normal operation. In other words, the second conveying mechanism 2b repeatedly performs the operation of moving the glass sheet G carried into the second conveying mechanism 2b from the horizontal posture P1 posture to the inclined posture P2, and then ejecting from the second conveying mechanism 2b to the third conveying mechanism. 2c. In addition, the example of the figure is a horizontal posture P1 before the posture of the glass plate G on the second conveyance mechanism 2b is changed.

Then, as shown in FIG. 7, the bogie 4 is placed at a predetermined position. Further, the extraction mechanism 3 is brought into an operating state. Then, the second conveyance mechanism 2b maintains the posture after the glass sheet G is changed from the horizontal posture P1 posture to the inclined posture P2. Further, the third valve portion 9c is closed while the second valve portion 9b is opened, and the vacuum system is constituted by the pipe 10 and the negative pressure generating source 11.

Further, when the sensor 13 detects the presence of the placing portion 4b of the bogie 4 and detects that the inclination angle of the mounting surface 4a is the same as the inclination angle of the glass sheet G of the inclined posture P2, as shown in FIG. The front and rear moving portions 6 are advanced to the forward position Lf. On the other hand, when it is not possible to detect the presence of the placing portion 4b by the sensor 13, or the inclination angle of the mounting surface 4a is the same as the inclination angle of the glass sheet G in the inclined posture P2, the extraction operation is stopped. . An abnormal stop alarm is triggered by rotating a lamp or a lamp as needed.

Here, the extraction mechanism 3 maintains the posture of the second conveyance mechanism 2b after the glass plate G posture is changed. When the confirmation is completed, as shown in FIG. 9, the vertical movement portion 7 is lowered to the first lowering position Ld1, and the adsorption pad 8 sucks and holds the glass sheet G in the inclined posture P2. The extraction mechanism 3 confirms that the vacuum degree of the vacuum system has reached a predetermined value in order to confirm the adsorption holding of the glass sheet G by the adsorption pad 8.

When the confirmation of the vacuum degree of the vacuum system is completed, as shown in FIG. 10, the vertical movement portion 7 is raised to the rising position Lu. Further, as shown in Fig. 11, the front and rear moving portions 6 are retracted to the retracted position Lb. Thereafter, as shown in FIG. 12, the vertical movement portion 7 is lowered to the second lowering position Ld2. During the said period, the glass plate G adsorbed and held by the adsorption pad 8 is also in a state of the inclined posture P2.

In the state of FIG. 12 (the state in which the vertical movement portion 7 is lowered to the second lowering position Ld2), the glass plate G held in the inclined posture P2 of the adsorption pad 8 and the placement surface 4a of the mounting portion 4b of the carriage 4 are adsorbed. There is a slight gap between them.

Here, the third valve portion 9c is opened while the second valve portion 9b is closed, so that high-pressure air flows into the pipe 10 from the compressed air source 12, and after a predetermined time elapses, the third valve portion 9c is closed. Thereby, the adsorption of the glass plate G by the adsorption pad 8 is released. Then, the glass plate G is moved away from the adsorption pad 8, and is placed on the mounting surface 4a of the mounting portion 4b of the bogie 4 in the inclined posture P2. Further, before the adsorption holding of the glass sheet G by the adsorption pad 8 is released, the presence of the mounting portion 4b of the trolley 4 can be detected again by the sensor 13, and the inclination angle and inclination of the mounting surface 4a can be detected. The inclination angle of the glass plate G of the posture P2 is the same. In this case, the detection by the sensor 13 in the initial stage (state shown in Fig. 7) may be omitted.

Then, as shown in FIG. 13, the vertical movement portion 7 is raised to the rising position Lu. In this manner, the extraction mechanism 3 is in a standby state. Then, as shown in FIG. 14, the posture of the second conveying mechanism 2b is maintained, and the second conveying mechanism 2b is returned to the normal operation. Further, the carriage 4 on which the glass sheet G is placed is moved to an inspection device at another position, where the glass sheet G is inspected by the inspection device. In addition, the second transport mechanism 2b may be returned to the normal operation, and the glass plate G may be held by the extraction mechanism 3, and then the vertical movement unit 7 may be retracted with respect to the second transport mechanism 2b. For example, The second transfer mechanism 2b can also be normally operated in the state shown in FIG.

In the manufacturing apparatus 1 configured as described above, the following effects can be obtained.

The glass plate G is held in the inclined posture P2 from the plurality of glass sheets G processed through the end surface by the extraction mechanism 3, and is transferred from the transport mechanism 2 to the placement surface 4a. The inclination angle α of the inclined posture P2 of the glass sheet G with respect to the horizontal plane H is larger than the horizontal posture P1, and therefore, the liquid adhering to the glass sheet G is efficiently carried out from the glass in the process of transferring the glass sheet G by the extraction mechanism 3. The plate G falls. Therefore, the amount of liquid adhering to the extracted glass sheet G can be reduced. In other words, according to the glass sheet manufacturing apparatus 1 of the present embodiment, in the manufacturing process of the glass sheet, the amount of liquid adhering to the glass sheet G extracted after the end surface processing step S1 can be reduced.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit and scope of the invention. For example, in the above-described embodiment, the placement surface 4a is disposed on the side of the inclination of the inclined posture P2 of the glass sheet G of the conveyance mechanism 2, but the placement surface 4a may be disposed as shown in Fig. 15 . The conveying mechanism 2 is on the side below the inclination of the inclined posture P2 of the glass sheet G.

Further, in the above-described embodiment, the glass sheet G on the second conveying mechanism 2b is moved. However, as shown in Fig. 15, the glass sheet G on the third conveying mechanism 2c before the washing step S3 can be moved.

Further, in the above-described embodiment, the height of the conveying surface 2e of the second conveying mechanism 2b is different from the height of the placing surface 4a of the placing portion 4b, but the heights may be the same. In the example of the drawing of Fig. 15, the height of the conveying surface 2f of the third conveying mechanism 2c is the same as the height of the placing surface 4a of the placing portion 4b.

Further, in the above-described embodiment, the height of the first lowering position Ld1 of the vertical movement portion 7 of the glass sheet G on the conveying surface 2e is extracted and the vertical movement portion for placing the glass sheet G on the mounting surface 4a. The height of the second lowering position Ld2 of 7 is different, but the height of the first lowering position Ld1 and the height of the second lowering position Ld2 may be the same.

Further, in the above-described embodiment, the glass sheet G is maintained in the inclined posture P2 while being held by the extraction mechanism 3, but the glass sheet G is in the inclined posture P2 at least one period during the period of suction and holding of the extraction mechanism 3. Alternatively, the glass plate G may have a tilt posture or a horizontal posture P1 in which the tilt angle is different from the tilt posture P2.

Further, in the above-described embodiment, the placing surface 4a is inclined in the same manner as the glass sheet G in the inclined posture P2, but may be inclined at a different inclination angle from the glass sheet G in the inclined posture P2, or may be a horizontal plane.

Further, in the above-described embodiment, the extraction mechanism 3 adsorbs and holds the glass sheet G by the adsorption pad 8, but the extraction mechanism 3 may hold the glass sheet G, for example, it may be held and held by the nip portion. Glass plate G.

In the above-described embodiment, the mounting surface 4a of the mounting portion 4b of the bogie 4 is used as the mounting surface of the glass sheet G. However, the present invention is not limited thereto. For example, the upper surface or the belt of the mounting table may be used. A conveying surface of a conveying mechanism such as a conveyor is used as a mounting surface.

Further, in the above-described embodiment, the glass sheet G has a rectangular shape. However, the glass sheet G is not limited thereto, and may be, for example, a round glass plate or the like. The thickness of the glass plate G can be, for example, 0.05 mm to 10 mm, preferably 0.05 mm to 0.7 mm. When the glass plate G has a rectangular shape, the size (length × width) of the glass plate can be, for example, 1000 mm × 1000 mm or more, preferably 1500 mm × 1500 mm or more, more preferably 2000 mm × 2000 mm or more. . On the other hand, the upper limit of the size of the glass plate can be set to, for example, 3000 mm × 3000 mm or less.

Further, in the above-described embodiment, in order to remove and collect the liquid remaining in the glass sheet G in a state where the placing portion 4b is in the inclined posture, a plurality of through holes are provided in the receiving tray 4c, and the water conduit 4d is disposed. Etc., but the removal and recovery of the liquid remaining on the glass sheet G may not be performed. Alternatively, the liquid remaining in the glass sheet G may be removed and recovered by another configuration. For example, a configuration as shown in FIGS. 16 and 17 may be employed. FIG. 17 is a schematic plan view of the placing portion 4b shown in FIG. 16.

The basic configuration of the extraction mechanism 3 shown in FIG. 16 and FIG. 17 is the same as that of the extraction mechanism 3 shown in FIG. 3, and the configuration for removing and recovering the liquid remaining in the glass sheet G is changed, and the placement surface 4a is placed. The tilt angle is constructed in such a way that it cannot be changed. Specifically, in the extraction mechanism 3 shown in FIGS. 16 and 17 , the plate-shaped receiving disk 4 g that does not have a plurality of through holes is disposed on the side of the mounting surface 4 a that is inclined downward. The receiving tray 4g supports the end surface of the glass sheet G placed thereon, and guides the liquid that has been detached from the glass sheet G in the longitudinal direction of the receiving tray 4g to flow. A discharge portion 4h for discharging the liquid guided to the receiving tray 4g is disposed at one end of the receiving tray 4g in the longitudinal direction. The discharge portion 4h has a plate-shaped base portion 4i, a discharge port 4j provided in the base portion 4i, and a side wall 4k for preventing liquid from flowing out. On the other hand, the other end of the longitudinal direction of the receiving tray 4g is provided with a side wall 41 for preventing liquid from flowing out. Further, the discharge port 4j is connected to the upper end of the pipe 4m (for example, a hose). The lower end of the pipe 4m is disposed directly above the tank 4n whose upper surface is open.

According to this configuration, the liquid that has been detached from the glass sheet G can be guided to the discharge port 4j by flowing along the receiving tray 4g. Along with this, the liquid detached from the glass sheet G is collected, and the collected liquid flows and falls in the pipe 4m connected to the discharge port 4j, and reaches the tank 4n.

Further, the discharge port 4j may be provided in the remaining area of the placement surface 4a (the area where the glass sheet G is not placed). Further, a discharge port 4j may be provided at each of both ends in the longitudinal direction of the receiving tray 4g. In order to cope with glass sheets of various sizes, the discharge port 4j may be disposed in the middle of the longitudinal direction of the receiving tray 4g. Further, the opening and closing valve may be provided on a path from the discharge port 4j to the lower end of the pipe 4m. In this case, if the opening and closing valve is opened while the carriage 4 is stopped at the proper position, the liquid can be recovered in the tank 4n, and if the opening and closing valve is closed during the movement of the trolley 4, the liquid can be prevented from falling. .

1‧‧‧Manufacture of glass plates

2‧‧‧Transportation agency

2a‧‧‧First transport agency

2b‧‧‧Second transport agency

2c‧‧‧ third transport agency

2d‧‧‧Support institutions

2e‧‧‧Transfer surface

2f‧‧‧Transfer surface

3‧‧‧ extracting institutions

4‧‧‧Trolley

4a‧‧‧Loading surface

4b‧‧‧Loading Department

4c, 4g‧‧‧ undertake

4d‧‧‧Water conduit

4e‧‧‧ box

4f‧‧‧Tray

4h‧‧‧Exporting Department

4i‧‧‧ base

4j‧‧‧Export

4k‧‧‧ side wall

4l‧‧‧ side wall

4m‧‧‧ piping

4n‧‧‧ box

5‧‧‧ gantry

5a‧‧‧Track Department

6‧‧‧ Moving Department

7‧‧‧Up and down moving department

7a‧‧‧Support

8‧‧‧Adsorption pad

8a‧‧‧Open end

9a‧‧‧First Valve Department

9b‧‧‧Second valve department

9c‧‧‧ third valve department

10‧‧‧Pipe (vacuum system)

11‧‧‧Negative pressure generation source (vacuum system)

12‧‧‧Compressed air source

13‧‧‧ sensor

G, G1, G2‧‧‧ glass plate

H‧‧‧ water level

Lb‧‧‧Retracted position

Ld1‧‧‧ first descending position

Ld2‧‧‧ second drop position

Lf‧‧‧ forward position

Lu‧‧‧ rising position

P1‧‧‧ horizontal posture

P2‧‧‧ tilt posture

S1‧‧‧ Face processing steps

S2‧‧‧ posture change steps

S3‧‧‧ cleaning steps

‧‧‧‧ tilt angle

Fig. 1 is a schematic plan view showing a main part of a manufacturing apparatus for a glass sheet according to an embodiment of the present invention. Fig. 2A is a cross-sectional view taken along line X-X of Fig. 1; Fig. 2B is a cross-sectional view taken along the line Y-Y of Fig. 1; 2C is a cross-sectional view of the arrow Z-Z of FIG. 1. 3 is a schematic side view showing an extraction mechanism of a glass sheet. 4 is a schematic view showing an arrangement of an adsorption pad. Fig. 5 is a schematic view for explaining piping associated with an adsorption pad. Fig. 6 is a schematic side view for explaining an operation of an extraction mechanism of a glass sheet. Fig. 7 is a schematic side view for explaining the operation of the extraction mechanism of the glass sheet. Fig. 8 is a schematic side view for explaining an operation of an extraction mechanism of a glass sheet. Fig. 9 is a schematic side view for explaining the operation of the extraction mechanism of the glass sheet. Fig. 10 is a schematic side view for explaining an operation of an extraction mechanism of a glass sheet. Fig. 11 is a schematic side view for explaining the operation of the extraction mechanism of the glass sheet. Fig. 12 is a schematic side view for explaining an operation of an extraction mechanism of a glass sheet. Fig. 13 is a schematic side view for explaining the operation of the extraction mechanism of the glass sheet. Fig. 14 is a schematic side view for explaining the operation of the extraction mechanism of the glass sheet. Fig. 15 is a schematic side view showing a first modification of the extraction mechanism of the glass sheet. Fig. 16 is a schematic side view showing a second modification of the extraction mechanism of the glass sheet. Fig. 17 is a schematic plan view of a mounting portion according to a second modification.

Claims (11)

A method for producing a glass sheet, wherein the glass sheet is conveyed by a transport mechanism in a sequence of an end surface processing step, a posture changing step, and a cleaning step, wherein the end surface processing step is to supply a liquid to the glass plate facing a horizontal posture a step of processing the end surface, wherein the posture changing step is a step of changing the glass plate posture of the horizontal posture to an inclined posture, wherein the cleaning step is a step of cleaning the glass plate in the inclined posture, In the method of manufacturing a glass sheet, the glass plate is held in the inclined posture by the extraction mechanism between the posture changing step and the washing step, and is transferred from the conveying mechanism. The extraction step of the specified placement surface. The method for producing a glass sheet according to the first aspect of the invention, wherein the mounting surface is disposed on a side of the conveying mechanism that is inclined above the inclined posture. The method for producing a glass sheet according to the first aspect of the invention, wherein the mounting surface is disposed on a side of the conveying mechanism that is inclined downward of the inclined posture. The method for producing a glass sheet according to any one of claims 1 to 3, wherein the extraction mechanism adsorbs the glass sheet by a plurality of adsorption pads. The method for producing a glass sheet according to claim 4, wherein the plurality of adsorption pads are respectively connected to a vacuum system via a valve portion, and the valve portion automatically contacts the glass plate with the adsorption pad. The state is opened, and is closed in a state where the adsorption pad is not in contact with the glass plate. The method for producing a glass sheet according to the fourth aspect of the invention, wherein the plurality of adsorption pads are disposed to be adsorbed on a peripheral portion of the glass plate of a plurality of sizes. The method for producing a glass sheet according to any one of the first to sixth aspect, wherein the mounting surface is an inclined surface on which the glass sheet can be placed in the inclined posture. The method for producing a glass sheet according to claim 7, wherein the mounting surface is provided on a bogie, and the bogie is configured to be capable of changing an angle of the mounting surface. A sensor detects the presence or absence of the trolley and the appropriateness of the tilt angle of the mounting surface. The method for producing a glass sheet according to claim 7 or 8, wherein the receiving tray for supporting the end surface of the glass sheet is provided on a side of the mounting surface that is inclined downward. And the water conduit is disposed directly under the receiving tray, and is supplied to the water conduit by discharging the liquid detached from the glass sheet from a plurality of through holes of the receiving tray and dropping it. The method for producing a glass sheet according to claim 7 or 8, wherein the receiving tray for supporting the end surface of the glass sheet is provided on a side of the mounting surface that is inclined downward. And a discharge port for discharging the liquid, and a liquid that is detached from the glass plate flows along the receiving tray and is guided to the discharge port. A glass plate manufacturing apparatus comprising: a conveying mechanism that conveys the glass sheet in the order of an end surface processing step, a posture changing step, and a cleaning step, wherein the end surface processing step supplies the liquid sheet to the horizontally facing glass sheet a step of processing the end surface, wherein the posture changing step is a step of changing the glass plate posture of the horizontal posture to an inclined posture, wherein the cleaning step is a step of cleaning the glass plate in the inclined posture, The apparatus for manufacturing a glass sheet is characterized in that the glass sheet is held in the inclined posture between the posture changing step and the washing step, and is transferred from the conveying mechanism to a predetermined placement. The extraction mechanism of the surface.