KR102458915B1 - Glass substrate transfer system including glass substrate transfer devices to prevent damage that occurs during transfer of glass substrate - Google Patents

Abstract

A glass substrate transfer device is disclosed. The disclosed glass substrate transfer device includes: a first support part having a plurality of first air discharge holes formed on an upper surface to discharge first air to a lower surface of the glass substrate, and discharging the glass substrate; and a second support part connected to one side of the first support part and supporting the glass substrate. The glass substrate is slid and transferred in a first direction from the first support part to the second support part, at least a partial area of the upper surface of the second support part is inclined downward, and a plurality of second air outlets for discharging second air to the lower surface of the glass substrate are formed in at least a part of the downwardly inclined area.

Description

Glass substrate transfer system including glass substrate transfer devices to prevent damage that occurs during transfer of glass substrate

Embodiments of the present invention relate to a glass substrate transport system including a plurality of glass substrate transport devices capable of preventing damage occurring during transport of the glass substrate, that is, surface scratches and/or breakage. .

In general, flat panel displays such as PDPs, LCDs, and OLEDs can be found in various places in the form of various devices such as TVs and outdoor billboards. These flat panel displays are implemented by forming an electronic circuit pattern on a glass substrate.

The manufacturing process of the glass substrate includes a cleaning process and a substrate inspection process. In general, a substrate inspection is performed after the glass substrate is cleaned. At this time, in order to easily perform cleaning, the glass substrate is tilted at a predetermined first angle, for example, 7°. In addition, in order to easily perform the substrate inspection, the glass substrate is tilted at a predetermined second angle, for example, 80°.

Accordingly, when manufacturing the glass substrate, the glass substrate tilted at 7° should be tilted at 80° and transferred. For this, a plurality of glass substrate transfer devices are used.

On the other hand, the plurality of glass substrate transfer devices are arranged to be spaced apart by a predetermined interval due to restrictions on installation. At this time, when one side of the glass substrate is positioned between the transport devices, one side of the glass substrate falls downward due to the weight of the glass substrate and collides with the surface of the transport device may occur. Accordingly, there is a problem in that the surface of the glass substrate is scratched or the edge of the glass substrate is damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a glass substrate transport device capable of preventing damage to the glass substrate, that is, scratching the surface of the glass substrate and/or damage to the edge of the glass substrate during transport of the glass substrate.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations thereof indicated in the claims.

In the transport device for slidingly transporting a glass substrate according to an exemplary embodiment of the present invention, a plurality of first air exhaust holes for discharging first air to a lower surface of the glass substrate are formed in the upper surface, and the glass substrate a first support part for supporting the , and a second support part connected to one side of the first support part and supporting the glass substrate, wherein at least a portion of an upper surface of the second support part is inclined downward, and the downward slope A plurality of second air outlets for discharging second air to the lower surface of the glass substrate are formed in at least a portion of the photo area.

In this case, the glass substrate is slidably transferred from the first support part to the second support part, and the glass substrate does not come into contact with the upper surface of the first support part by the first air, and the second support part Another glass support device is disposed spaced apart from the support part by a predetermined distance in the first direction, the glass substrate is slidably transported from the transport device to the other glass support device, and the glass is slidably transported by the second air. A scratch on the surface of the substrate and/or damage to the edge of the glass substrate is prevented.

In addition, the discharge pressure of the second air is set to be higher than the discharge pressure of the first air.

In addition, the discharge pressure of the second air is set based on at least one of a distance between the second support part and the other glass support device and an angle of the at least a portion of the downwardly inclined region.

In addition, a third support portion connected to the other side of the first support portion and supporting the glass substrate, wherein at least a portion of an upper surface of the third support portion is inclined downward, and at least a portion of the portion inclined downward has A plurality of third air outlets for discharging third air are formed on a lower surface of the glass substrate.

In addition, the first support part includes a plurality of support bars extending in the first direction, wherein the plurality of support bars are arranged in parallel in a second direction perpendicular to the first direction, and the second support part is the It is connected to one side of the plurality of support bars.

In addition, the transport apparatus for slidingly transporting a glass substrate according to another embodiment of the present invention includes a plurality of support bars for supporting the glass substrate, wherein at least one of both side end regions of the support bar is inclined downward, and the support A plurality of first air discharge holes for discharging first air are formed in a middle region of the support bar except for both side end regions of the bar, and a plurality of second air discharge holes for discharging second air are formed in at least one of both side end regions of the support bar. 2 Air discharge holes are formed.

According to the present invention, it is possible to prevent damage to the glass substrate, that is, scratch the surface of the glass substrate and/or damage the edge of the glass substrate when the glass substrate is transported.

In addition, the effects of the present invention are not limited to the above-described effects, and it should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a view showing a perspective view of a glass substrate transport system according to an embodiment of the present invention.
2 is a view showing a plan view of a glass substrate transport system according to an embodiment of the present invention.
3 is a view showing a schematic block diagram of a glass substrate transport system according to an embodiment of the present invention.
4 is a view for explaining the concept of a transfer cycle of the glass substrate transfer system according to an embodiment of the present invention.
5 and 6 are diagrams for explaining the operation of the glass substrate transport system in the first period according to an embodiment of the present invention.
7 is a view for explaining the operation of the glass substrate transport system in the second period according to an embodiment of the present invention.
8 and 9 are diagrams for explaining the operation of the glass substrate transport system in the third period according to an embodiment of the present invention.
10 is a view for explaining the operation of the glass substrate transport system in the fourth period according to an embodiment of the present invention.
11 is a view showing a plan view of a transfer device according to an embodiment of the present invention.
12 is a view showing a plan view of a glass substrate support according to an embodiment of the present invention.
13 is a view showing a perspective view of a single-side support bar according to an embodiment of the present invention.
14 is a view illustrating a cross-sectional view of FIG. 13 .
15 is a view showing a cross-sectional view of a support according to an embodiment of the present invention.
16 is a view for explaining a situation in which a glass substrate is transferred in a conventional glass substrate transfer system.
17 is a view for explaining a situation in which a glass substrate is transferred from a first transfer device to a third transfer device according to an embodiment of the present invention.
18 is a view showing a cross-sectional view of a support according to another embodiment of the present invention.
19 is a view showing a perspective view of a side end of a support according to another embodiment of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements.

Terms such as “first” and “second” may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. The term “and/or” includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Throughout this specification, "up and down direction" means a vertical direction of the conveying device in a state in which a conveying device to be described later is installed for daily use, "left and right direction" means a direction orthogonal to the vertical direction, and the front and rear direction is up and down It means a direction orthogonal to both the direction and the left-right direction. "Both directions" or "lateral directions" have the same meaning as the left and right directions, and these terms may be used interchangeably herein.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a perspective view of a glass substrate transport system 1 according to an embodiment of the present invention, Figure 2 is a view showing a plan view of the glass substrate transport system 1 according to an embodiment of the present invention 3 is a view showing a schematic block diagram of a glass substrate transport system 1 according to an embodiment of the present invention.

Referring to FIG. 3 , the glass substrate transport system 1 slides and transports the glass substrate mounted or supported by the input device 2 provided in the glass substrate input area to the discharge device 3 provided in the glass substrate discharge area. It can be a system that makes To this end, the glass substrate transport system 1 may be disposed in a glass substrate transport space provided between the input device 2 and the discharge device 3 .

Hereinafter, for convenience of description, the present specification will be described by mixing "sliding transfer" and "transfer".

Here, the glass substrate mounted or supported by the input device 2 may be a glass substrate in which unnecessary corner regions are cut, vertex regions are polished, and even cleaned. In particular, in order to facilitate cleaning of the glass substrate, the glass substrate should be tilted at a first angle (eg, 7°). To this end, the input device 2 may support the glass substrate by tilting it at a first angle.

In addition, a substrate inspection may be performed on the glass substrate transferred to the discharge device 3 . At this time, the glass substrate should be tilted at a second angle (eg, 80°) in order to perform the substrate inspection. To this end, the discharging device 3 may support the glass substrate by tilting it at a second angle.

Referring to the above, the glass substrate transfer system 1 performs an operation of transferring the glass substrate supported by the input device 2 tilted at a first angle to the discharge device 3 tilted at a second angle. can do.

Meanwhile, the input device 2 may provide the glass substrate to the glass substrate transfer system 1 according to a preset supply cycle. As an example, the feed cycle may be 11 seconds. However, in the case of the conventional glass substrate transport apparatus, the supply cycle is too short, there is a problem that the glass substrate cannot be transported according to the supply cycle. In order to solve this problem, the supply cycle may be set to be long, but in this case, there is a problem in that the transfer time of the glass substrate is long, so that the manufacturing speed of the glass substrate is slowed down.

To solve this problem, referring to FIGS. 1 to 3 , the glass substrate transport system 1 may include a first sub transport system 10 , a second sub transport system 20 , and a control device 30 . can The control device 30 may control operations of the first sub transport system 10 and the second sub transport system 20 . Meanwhile, the control device 30 may be provided inside the transfer space or may be provided outside the transfer space.

The first sub transport system 10 may include a first transport device 11 , a second transport device 12 , and a first moving device 13 . The first sub transfer system 10 may be arranged in a first column of the transfer space.

Each of the first and second transfer devices 11 and 12 may be a device for transferring a glass substrate while supporting the glass substrate. Each of the first and second transport devices 11 , 12 can move forward and backward in the first row of transport space. In this case, the second transfer device 12 may be located at the rear side of the first transfer device 11 .

In addition, the angle at which the first and second transfer devices 11 and 12 support the glass substrate, that is, the tilt angle may be changed. According to the embodiment, the tilting angle of each of the first and second transfer devices 11 and 12 may be the first angle or the third angle. Here, the first angle may be a support angle (tilting angle) of the glass substrate of the input device 2 described above, and the third angle may be an angle different from the first angle. A detailed description thereof will be given later.

The first moving device 13 may be a device that moves the first and second transport devices 11 and 12 forward and backward. A rail 131 may be provided on the upper portion of the first moving device 13 , and the first and second transfer devices 11 and 12 are front and rear along the rail 131 provided in the first moving device 13 . can move to

The second sub conveying system 20 may include a third conveying device 21 , a fourth conveying device 22 , and a second moving device 23 . The second sub transport system 20 may be arranged in the second row of the transport space. In this case, the second row may be positioned adjacent to the first row.

Each of the third and fourth transfer devices 21 and 22 may be a device for transferring a glass substrate while supporting the glass substrate. Each of the third and fourth transport devices 21 , 22 can move forward and backward in the second row of transport space. In this case, the fourth transfer device 22 may be located at the rear side of the third transfer device 21 .

In addition, the angle at which the third and fourth transfer devices 21 and 22 support the glass substrate, that is, the tilt angle may be changed. According to the embodiment, the tilting angle of each of the third and fourth transfer devices 21 and 22 may be the second angle or the third angle. Here, the second angle may be a support angle (tilting angle) of the glass substrate of the discharging device 3 described above, and the third angle may be an angle different from the second angle. According to an embodiment, the third angle may be an angle between the first angle and the second angle. For example, the third angle may be 43.5°. A detailed description thereof will be given later.

The second moving device 23 may be a device for moving the third and fourth transport devices 21 and 22 . A rail 231 may be provided on the upper portion of the second moving device 23 , and the third and fourth transfer devices 21 and 22 are front and rear along the rail 231 provided in the second moving device 23 . can move to

With reference to the above content, the operation of the glass substrate transport system 1 will be described in detail.

According to the embodiment, the glass substrate transport system 1 may operate in a transport cycle. Here, the transfer cycle may correspond to half of the above-described supply cycle. As an example, if the feed cycle is 11 seconds, the feed cycle may be 22 seconds.

4 is a view for explaining the concept of a transfer cycle of the glass substrate transfer system 1 according to an embodiment of the present invention.

The transfer cycle of the glass substrate transfer system 1 may be composed of sequential first, second, third, and fourth periods.

The first and third periods may be periods for transferring the glass substrate. In the first and third periods, each of the first, second, third, and fourth transfer devices 11, 12, 21, and 22 may stop moving forward and backward while maintaining the tilting angle, and the glass substrate can be transported

The second and fourth periods may be periods for moving the positions of the first, second, third, and fourth transfer devices 11 , 12 , 21 , and 22 and changing the tilting angle. In the second and fourth periods, each of the first, second, third, and fourth transfer devices 11 , 12 , 21 , and 22 may move forward and backward while changing the tilting angle.

Hereinafter, operation|movement of the glass substrate conveyance system 1 in each period is demonstrated in detail.

5 and 6 are diagrams for explaining the operation of the glass substrate transport system 1 in the first period according to an embodiment of the present invention.

5 and 6 , in a first period, the first transport device 11 may be positioned adjacent to the input device 2 , and the tilting angle of the first transport device 11 is adjusted to the first angle ( For example, it may be 7°). At this time, both the tilting angle of the first transfer device 11 and the tilting angle of the input device 2 may be the first angle, and the first glass substrate GS1 is pre-installed in the input device 2 according to the supply cycle. can be located Accordingly, the first glass substrate GS1 positioned in the input device 2 may be slidably transferred to the first transport device 11 .

In addition, the second glass substrate GS2 may be previously located in the second transfer device 12 . In addition, in the first period, the second and fourth transport devices 12 and 22 may be positioned adjacent to each other, and the tilting angles of the second and fourth transport devices 12 and 22 are both a third angle (eg, a third angle). to 43.5°), and the plurality of rollers 4221 provided in each of the second and fourth transfer devices 12 and 22 may rotate. Accordingly, the second glass substrate GS2 located in the second transfer device 12 may be slidably transferred to the fourth transfer device 22 .

In addition, the third glass substrate GS3 may be previously located in the third transfer device 21 . In addition, in the first period, the third conveying device 21 may be positioned adjacent to the discharging device 3 , and the tilting angle of the third conveying device 21 is a second angle (eg, 80°). can In this case, both the tilting angle of the third transfer device 21 and the tilting angle of the discharge device 3 may be the second angle. Accordingly, the third glass substrate GS3 positioned in the third transfer device 21 may be slidably transferred to the discharge device 3 .

7 is a view for explaining the operation of the glass substrate transport system 1 in the second period according to an embodiment of the present invention.

Referring to FIG. 7 , in the second period, each of the first, second, third, and fourth transfer devices 11 , 12 , 21 , and 22 may move forward. In addition, when the first, second, third, and fourth transfer devices 11, 12, 21, 22 move forward, the tilting angle of the first transfer device 11 is a first angle (eg, 7°) may be changed from the third angle (eg, 43.5°), the tilting angle of the second transport device 12 may be changed from the third angle to the first angle, and the tilting of the third transport device 21 may be changed from the third angle to the first angle. The angle may be changed from the second angle (eg, 80.5°) to the third angle, and the tilting angle of the fourth transport device 22 may be changed from the third angle to the second angle.

8 and 9 are diagrams for explaining the operation of the glass substrate transport system 1 in the third period according to an embodiment of the present invention.

8 and 9 , in the third period, the second transport device 12 may be positioned adjacent to the input device 2 , and the tilting angle of the second transport device 12 is adjusted to the first angle ( For example, it may be 7°), and the plurality of rollers 4221 provided in the second transfer device 12 may rotate. In this case, both the tilting angle of the second transfer device 12 and the tilting angle of the input device 2 may be the first angle, and the fourth glass substrate GS4 is pre-installed in the input device 2 according to the supply cycle. can be located Accordingly, the fourth glass substrate GS2 located in the input device 2 may be slidably transferred to the second transfer device 12 .

In addition, the first glass substrate GS1 may be previously located in the first transfer device 11 . In addition, in the third period, the first and third transfer devices 11 and 21 may be positioned adjacent to each other, and the tilting angles of the first and third transfer devices 11 and 21 are both a third angle (eg, a third angle). , which may be 43.5°). Accordingly, the first glass substrate GS1 positioned in the first transfer device 11 may be slidably transferred to the third transfer device 21 .

In addition, the second glass substrate GS2 may be previously located in the fourth transfer device 22 . In addition, the fourth transport device 22 may be positioned adjacent to the discharge device 3 , and the tilting angle of the fourth transport device 22 may be a second angle (eg, 80°). In this case, both the tilting angle of the fourth transfer device 22 and the tilting angle of the discharge device 3 may be the second angle. Accordingly, the second glass substrate GS2 positioned in the fourth transfer device 22 may be slidably transferred to the discharge device 3 .

10 is a view for explaining the operation of the glass substrate transport system 1 in the fourth period according to an embodiment of the present invention.

Referring to FIG. 10 , in the fourth period, each of the first, second, third, and fourth transfer devices 11 , 12 , 21 , and 22 may move backward. In addition, when the first, second, third, and fourth transfer devices 11, 12, 21, and 22 move backward, the tilting angle of the first transfer device 11 is a third angle (eg, 43.5°) may be changed from the first angle (eg, 7°), the tilting angle of the second transport device 12 may be changed from the first angle to the third angle, and the tilting of the third transport device 21 may be changed from the first angle to the third angle. The angle may be changed from the third angle to the second angle (eg, 80.5°), and the tilting angle of the fourth transport device 22 may be changed from the second angle to the third angle.

Thereafter, in the first period described above, the glass substrate transport system 1 may operate similarly to FIGS. 5 and 6 .

In other words, the glass substrate transport system 1 according to an embodiment of the present invention may repeatedly operate in a transport cycle, and the transport cycle may be twice the glass substrate supply cycle of the input device 2 . In this case, the first, second, third, and fourth transfer devices 11 , 12 , 21 , and 22 may operate for each first, second, third, and fourth period as described above. Accordingly, it is possible to transfer the glass substrate from the input device 2 to the discharge device 3 according to the supply cycle. As a result, the glass substrate transfer system 1 can distribute the transfer tag of the glass substrate, shorten the transfer time of the glass substrate, and increase the manufacturing speed of the glass substrate.

Hereinafter, with reference to FIGS. 11 to 15, the structures of the first, second, third, and fourth transfer devices 11, 12, 21, and 22, and the glass substrate transferred in the first and third periods ( GS) damage, that is, the surface scratching of the glass substrate and/or the prevention of damage to the edge of the glass substrate will be described in detail.

11 is a view showing a plan view of the transport apparatus (11, 12, 21, 22) according to an embodiment of the present invention.

Referring to FIG. 11 , the transfer devices 11 , 12 , 21 , and 22 may include a base part 410 and a glass substrate support part 420 .

The base unit 410 may operate to move the transfer devices 11 , 12 , 21 , and 22 forward and backward. A component engaged with the rails 131 and 231 provided in each of the first and second moving devices 13 and 23 may be provided at a lower portion of the base 410 .

The glass substrate support 420 may be provided above the base 410 .

The glass substrate support 420 may support the glass substrate GS to mount the glass substrate GS. As described above, the angle of the glass substrate GS supported by the glass substrate support 420 , that is, the tilting angle may be changed. That is, the tilting angle of the glass substrate support 420 of the first and second transfer devices 11 and 12 may be the first angle or the third angle, and the glass of the third and fourth transfer devices 21 and 22 . The tilting angle of the substrate support 420 may be the second angle or the third angle. To this end, the glass substrate support 420 may include a module such as a cylinder and a motor.

In addition, the glass substrate support 420 may transfer the glass substrate GS mounted or supported on the glass substrate support 420 . The first and second transfer devices 11 and 12 may transfer the glass substrate GS transferred from the input device 2 to the third and fourth transfer devices 21 and 22 . The third and fourth transfer devices 21 and 22 may transfer the glass substrate GS transferred from the first and second transfer devices 11 and 12 to the discharge device 3 .

12 is a view showing a plan view of the glass substrate support 420 according to an embodiment of the present invention.

Referring to FIG. 12 , the glass substrate support part 420 may include a support part 421 , a transfer part 422 , and a width adjustment part 423 .

The support 421 may support the glass substrate GS. That is, the support part 421 may support the lower surface of the glass substrate GS.

The support part 421 may include a plurality of middle support parts 4211 and a plurality of short side support parts 4213 .

The middle support part 4211 (ie, the first support part) may have a shape of a support bar extending in the longitudinal direction (ie, the first direction) of the glass substrate support part 420 . The plurality of middle support parts 4211 may be arranged in parallel in the width direction (ie, the second direction) of the glass substrate support part 420 . Hereinafter, for convenience of description, the present specification will be described by mixing the middle support part 4211 and the middle support bar 4211 .

The middle support bar 4211 may be composed of two or more sub support bars. Each of the two or more sub support bars may be connected to the adjacent sub support bar in the longitudinal direction of the glass substrate support 420 .

A first air exhaust module (not shown) may be provided inside the middle support bar 4211 . The first air discharge module may discharge the first air through the first air discharge hole 4212 formed on the upper surface of the middle support bar 4211 . That is, the first air discharge hole 4212 may discharge the first air to the lower surface of the glass substrate GS.

The short side support 4213 may have a shape of a support bar extending in the width direction of the glass substrate support 420 . Hereinafter, for convenience of description, the present specification will be described by mixing the short side support part 4213 and the short side support bar 4213 .

A plurality of short side support bars 4213 (ie, the second support part and the third support part) may be connected to both ends of the plurality of middle support bars 4211 . That is, two or more short-side support bars 4213 may be disposed side by side in the width direction of the glass substrate support 420 at each of both ends of the plurality of middle support bars 4211 . The short side support bar 4213 may function to connect two or more middle side support bars 4211 at the ends.

A second air exhaust module (not shown) may be provided inside the short side support bar 4213 . The second air discharge module may discharge the second air through the second air discharge hole 4214 formed in at least a portion of the upper surface of the short side support bar 4213 . That is, the second air discharge hole 4214 may discharge the second air to the lower surface of the glass substrate GS.

Depending on the first and second air discharged from the first and second air discharge holes 4212 and 4214 , the glass substrate GS may not come into contact with the support 421 . That is, the glass substrate GS may float on the upper side of the support 421 . For example, the glass substrate may be floated by 0.3 to 0.4 mm. As the glass substrate GS floats, the glass substrate GS may be protected when the glass substrate GS is transferred. That is, when the glass substrate GS is transferred, the glass substrate GS does not come into contact with the support 421 , so that the surface of the glass substrate GS may not be scratched. In addition, it is possible to prevent the edge region of the glass substrate GS from being damaged when the glass substrate GS is transported according to the second air discharged from the second air discharge hole 4214 . That is, damage to the glass substrate may be prevented according to the first and second air discharged from the first and second air discharge holes 4212 and 4214 . This will be described in more detail below.

The transfer unit 422 may transfer the glass substrate GS supported by the support unit 421 . That is, by the operation of the transfer unit 422 , the glass substrate GS may be transferred in the first direction. The transfer part 422 may be disposed below the support part 421 .

The transfer unit 422 may include a plurality of rollers 4221 . The plurality of rollers 4221 may be sequentially arranged below the lowermost middle support bar 4211 among the plurality of middle support bars 4211 . The roller 4221 may rotate in the axial direction, and the glass substrate GS may be transferred in the first direction by the rotation of the roller 4221 .

The width adjuster 423 may adjust the width of the glass substrate support 420 to correspond to the width of the glass substrate GS to be supported by the glass substrate support 420 . That is, since the glass substrate GS may have various widths, the width adjusting unit 423 may be provided in the glass substrate support unit 420 to support all the glass substrates GS having various widths. The width adjusting unit 423 may be disposed on the upper side of the supporting unit 421 , and the width adjusting unit 423 may move in the vertical direction to adjust the width of the glass substrate supporting unit 420 .

Hereinafter, the shape of the short side support bar 4213 and the prevention of damage to the glass substrate GS transferred in the first and third periods will be described in detail with reference to FIGS. 13 to 15 .

13 is a view showing a perspective view of a single side support bar 4213 according to an embodiment of the present invention, FIG. 14 is a view showing a cross-sectional view of FIG. 13, and FIG. 15 is a support part according to an embodiment of the present invention ( 421) is a cross-sectional view.

13 to 15 , the short-side support bar 4213 may have a generally rectangular shape, and a portion of the upper surface of the short-side support bar 4213 may be inclined downward.

°만큼 하향 경사질 수 있다. Specifically, the upper surface of the short-side support bar 4213 may be divided into a first upper surface area 4213a and a second upper surface area 4213b. The second upper surface area 4213b of the short side support bar 4213 may be located on the same plane as the upper surface of the middle side support bar 4211 , and the first upper surface area 4213a of the short side support bar 4213 is the short side support bar Based on the second upper surface area 4213b of 4213

It can be tilted downward by °.

Meanwhile, according to another exemplary embodiment, the upper surface of the short-side support bar 4213 may not include the second upper surface region 4213b. That is, the upper surface of the short side support bar 4213 may be formed of only the first upper surface area 4213a. In this case, the first upper surface area 4213a of the short side support bar 4213 may be inclined downward by θ° with respect to the upper surface of the middle side support bar 4211 .

A plurality of second air discharge holes 4314 may be formed in the first upper surface area 4213a of the short side support bar 4213 . The second air may be discharged from each of the plurality of second air discharge holes 4314 .

Referring to FIG. 15 , the short side support bars 4213 may be respectively connected to both ends of the middle side support bar 4211 . At this time, the short side support bar 4213 connected to the right end (ie, one side) of the middle support bar 4211 and the short side support bar 4213 connected to the left end (ie, the other side) of the middle support bar 4211 are mutually It can be symmetrical left and right. The first air discharge hole 4212 formed on the upper surface of the middle support bar 4211 may discharge the first air upward, and the short side support bar 4213 located at the right end may discharge the second air to the right. And, the short side support bar 4213 located at the left end may discharge the second air to the upper left. The first and second air may contact the lower surface of the glass substrate GS.

16 is a view for explaining a situation in which the glass substrate GS is transferred in the conventional glass substrate transfer system.

Referring to FIG. 16 , the glass substrate GS is transferred from the support bar 510 of the transfer apparatus A to the support bar 520 of the transfer apparatus B. Referring to FIG. In addition, due to restrictions on the installation of the transport device, the support bar 510 of the transport device A and the support bar 510 of the transport device B are disposed to be spaced apart by a predetermined interval d. In addition, the support bars 510 and 520 discharge air upward to float the glass substrate GS.

On the other hand, when one side of the glass substrate GS is positioned between the transport device A and the transport device B, air does not contact the lower surface of the one side of the glass substrate GS. At this time, when the separation distance d between the transport device A and the transport device B exceeds the critical distance, one side of the glass substrate GS may fall downward due to the weight of the glass substrate GS having a thin thickness. have. As an example, the critical spacing may be 30 mm. Accordingly, one side of the glass substrate GS collides with the other side of the transfer device B, so that the surface of the glass substrate GS is scratched or a corner region of the glass substrate GS is damaged.

In order to solve this problem, the glass substrate transport system 1 according to the present invention forms an air discharge hole (that is, the second air discharge hole 4214) to be inclined downward at at least a part of both ends of the support part 421 . to discharge the air (ie, the second air). This will be described in detail as follows.

17 is a view for explaining a situation in which the glass substrate GS is transferred from the first transfer device 11 to the third transfer device 21 according to an embodiment of the present invention.

At this time, the content described in FIG. 17 is a situation in which the glass substrate GS is transferred from the second transfer device 12 to the fourth transfer device 22 , and the first or second transfer device ( It can be applied to both a situation in which the glass substrate GS is transferred to 11 and 12 and a situation in which the glass substrate GS is transferred from the third or fourth transfer devices 21 and 22 to the discharge device 3 .

Referring to FIG. 17A , the glass substrate GS is positioned above the first transfer device 11 . At this time, the first air is discharged from the first air discharge hole 4212 formed in the middle support bar 4211 of the first conveying device 11 , and the glass substrate GS is transferred to the first conveying device by the first air. It is plotted in (11). Accordingly, scratching of the surface of the glass substrate GS in the first transfer device 11 may be prevented.

Referring to FIG. 17B , the glass substrate GS is transferred from the first transfer device 11 to the third transfer device 21 . At this time, when one side of the glass substrate GS is positioned between the first transfer device 11 and the third transfer device 21 , the lower surface of the one side of the glass substrate GS has a second air discharge hole 4214 ) in contact with the discharged second air.

That is, as described above, the short side support 4213 provided on one side of the first transfer device 11 may discharge the second air to the upper right, and the short side provided on the other side of the third transfer device 21 . The support part 4213 may discharge the second air to the upper left. The second air discharged to the upper right and upper left may contact the lower surface of one side of the glass substrate GS positioned between the first transfer device 11 and the third transfer device 21 . Accordingly, one side of the glass substrate GS may float between the first transfer device 11 and the third transfer device 21 , and may not collide with the other side of the third transfer device 21 . As a result, a scratch on the surface of the glass substrate GS and/or damage to the glass substrate GS may be prevented.

According to the embodiment, the discharge pressure of the second air may be higher than the discharge pressure of the first air. That is, the discharge intensity of the second air may be greater than the discharge intensity of the first air. Accordingly, one side of the glass substrate GS positioned between the first transfer device 11 and the third transfer device 21 may be better floated.

°) 중 적어도 하나에 기초하여 설정될 수 있다. 이 경우에도, In addition, according to the embodiment, the discharge pressure of the second air discharged from the short-side support bar 4213 is the separation distance d of the first conveying device 11 and the third conveying device 21 (that is, the first The first upper surface area (d) of the short side support bar 4213 of the transport device 11 and the short side support bar 4213 of the third transport device 21) and the downwardly inclined short side support bar 4213 ( 4213a) of the angle (

°) may be set based on at least one of Even in this case,

As an example, as the distance d increases, the influence by the weight of the glass substrate GS increases, so that the discharge pressure of the second air may be set to increase.

As another example, as the angle θ° increases, the distance between the lower surface of the glass substrate GS and the first upper surface region 4213a of the short-side support bar 4213 increases, so that the discharge pressure of the second air increases. It can be set to increase.

Then, referring to FIG. 17C , one side of the glass substrate GS is positioned above the third transfer device 21 . At this time, the first air is discharged from the first air discharge hole 4212 formed in the middle support bar 4211 of the third transfer device 21 , and the glass substrate GS is transferred to the third transfer device by the first air. It is plotted in (21). Accordingly, scratching of the surface of the glass substrate GS in the third transfer device 21 may be prevented.

18 is a cross-sectional view of the support 421 according to another embodiment of the present invention.

Referring to FIG. 18 , the support part 421 may include only the middle support bar 4211 without including the short side support bar 4213 . In addition, at least one of both side ends of the middle support bar 4211 may be formed to be inclined downward.

19 is a view showing a perspective view of a side end of the support part 421 according to another embodiment of the present invention.

Referring to FIG. 19 , the upper surface of the sub support bar corresponding to the side end of the support part 421 may include a third upper surface area 4211a and a fourth upper surface area 4211b.

The third upper surface area 4211a of the sub support bar may be inclined downward by θ° with respect to the fourth upper surface area 4211b of the sub support bar. A first air discharge hole 4212 may be formed in the fourth upper surface area 4211b of the sub support bar, and a second air discharge hole 4214 may be formed in the third upper surface area 4211a of the sub support bar. have.

That is, with reference to FIGS. 18 and 19 , unlike the support part 421 according to the embodiment of the present invention described above, a plurality of middle areas of the middle support bar 4211 except for both side end areas of the middle support bar 4211 are provided. A first air discharge hole 4212 may be formed, and a plurality of second air discharge holes 4214 may be formed in at least one of both side end regions of the middle support bar 4211 . Since the contents described with reference to FIGS. 12 to 17 are applicable except for the above-described differences, overlapping descriptions will be omitted.

Meanwhile, in addition to the first, second, third, and fourth transport devices 11, 12, 21, and 22 in which the tilting angle is changed, various transport devices for transporting the glass substrate GS have been described with reference to FIGS. 12 to 19 . (For example, it can be easily applied to a flat plate-shaped transfer device with a fixed tilting angle).

In addition, although it has been described that air is discharged from the air discharge holes 4212 and 4214 in FIGS. 12 to 19 , the present invention is not limited thereto, and various gases other than air are discharged from the gas discharge holes. it might be In this case, the gas discharge holes may correspond to the air discharge holes 4212 and 4214 .

As described above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are only provided to help the overall understanding of the present invention, and the present invention is not limited to the above embodiments, Various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains. Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims described below, but also all of the claims and all equivalents or equivalent modifications will be said to belong to the scope of the spirit of the present invention.

Claims (7)

first and second transfer devices positioned adjacent to the glass substrate input device tilted at a first angle and movable in the front-rear direction; and
Including; but located adjacent to the glass substrate discharging device tilted at a second angle, the third and fourth transport devices movable in the front-rear direction;
Each of the first and second transfer devices transfers the glass substrate to the third and fourth transfer devices spaced apart from each other by a preset interval after receiving the glass substrate from the glass substrate input device,
Each of the third and fourth transfer devices transfers the glass substrate to the glass substrate discharging device after receiving the glass substrate from the first and second transfer devices,
A tilting angle of each of the first and second transfer devices is the first angle or a third angle, and a tilting angle of each of the third and fourth transfer devices is the second angle or the third angle, and the first , the second and third angles are different,
Each of the first, second, third and fourth transfer devices,
a first support part having a plurality of first gas discharge holes for discharging a first gas to a lower surface of the glass substrate and supporting the glass substrate; and
a second support part connected to both sides of the first support part, respectively, and supporting the glass substrate;
A plurality of second gas outlets for discharging a second gas to a lower surface of the glass substrate are formed in at least a portion of the upper surface of the second support portion inclined downward,
Glass substrate transport system.
The method of claim 1,
The glass substrate does not come into contact with the upper surface of the first support part by the first gas,
Surface scratches and / or edge damage of the glass substrate is prevented by the second gas,
Glass substrate transfer system.
The method of claim 1,
the discharge pressure of the second gas is set to be higher than the discharge pressure of the first gas,
Glass substrate transfer system.
The method of claim 1,
The discharge pressure of the second gas is set based on at least one of a spacing between the adjacent conveying devices and an angle of the downwardly inclined at least part of the region,
Glass substrate transport system.
delete delete first and second transfer devices positioned adjacent to the glass substrate input device tilted at a first angle and movable in the front-rear direction; and
Including; but located adjacent to the glass substrate discharging device tilted at a second angle, the third and fourth transport devices movable in the front-rear direction;
Each of the first and second transfer devices transfers the glass substrate to the third and fourth transfer devices spaced apart from each other by a preset interval after receiving the glass substrate from the glass substrate input device,
Each of the third and fourth transfer devices transfers the glass substrate to the glass substrate discharging device after receiving the glass substrate from the first and second transfer devices,
A tilting angle of each of the first and second transfer devices is the first angle or a third angle, and a tilting angle of each of the third and fourth transfer devices is the second angle or the third angle, and the first , the second and third angles are different,
Each of the first, second, third and fourth transfer devices includes a plurality of support bars for supporting the glass substrate,
Both side end regions of the support bar are inclined downward,
A plurality of first gas discharge holes for discharging a first gas are formed in the middle region of the support bar except for both side end regions of the support bar,
A plurality of second gas discharge holes for discharging a second gas are formed in both side end regions of the support bar,
Glass substrate transport system.

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