KR20110008373A - Rounding apparatus for glass substrate and rounding method using the rounding apparatus - Google Patents

Abstract

PURPOSE: A glass substrate rounding device and a rounding method using the same are provided to improve the efficiency of processes and prevent glass substrates from being partially heated. CONSTITUTION: A glass substrate rounding device comprises a body, a processing unit fixing plate(110), a torch, a laser beam scanning unit(300), a 1 shaft precision stage(400), and a controller. The body comprises a bottom surface and a side. The processing unit fixing plate is moved to the top or the bottom. The torch preheats the edge of the glass substrates. The laser beam scanning unit scans the laser beam on the edge of the preheated glass substrates to round glass substrates. The 1 shaft precision stage can reciprocate the glass substrates in the first direction. The controller controls one or more among the feeding speeds of the 1 shaft precision stage.

Description

Glass substrate rounding device and the rounding method using the glass substrate rounding device {Rounding Apparatus for Glass Substrate and Rounding Method using the Rounding Apparatus}

The present invention relates to a device for rounding a glass substrate used in a flat panel display device and a rounding method using such a rounding device. More specifically, in the rounding of the glass substrate provided in the flat panel display device, the glass substrate is preheated by using a torch, and the laser beam is scanned on the glass substrate by a laser beam scanning device spaced apart from the torch by a predetermined distance. do.

Recently, the trend of the display industry is shifting from conventional displays using CPT to flat panel displays such as LCD, PDP and LED. In addition, the shipment of flat-panel display electronic products in 2008 was 438 million units, and the production of flat-panel display electronic products is increasing year by year. The corners of the glass substrate used in such a flat panel display need to be rounded. The reason why the glass substrate should be rounded at the edge of the glass substrate is that when the glass substrate is not rounded and is used in the flat display manufacturing process such as LCD while being angled, the load may be concentrated at the angled corners, which may increase the breakage rate of the glass substrate. .

Due to this problem, a rounding process is performed on the glass substrate. 1 illustrates a portion of the corner 20 before the glass substrate 10 is rounded and a portion of the corner 30 on which the glass substrate 10 is rounded. However, when using the conventional wheel to round the corner area of the glass substrate, various problems occur. First, the use of wheels causes about 40% reduction in strength due to micro-cracks (fine cracks) in the rounded glass substrates. Secondly, fine glass particles (particles, debris) generated during the rounding process cause problems in electrical wiring.

Therefore, in order to solve this problem, a rounding method using a laser may be used. Figure 2 shows a perspective view of a device for rounding the glass substrate 10 using a conventional laser beam. As shown in FIG. 2, only the laser beam scanning means 300 and the mirror 40 are used to vertically scan the laser beam onto the glass substrate without preheating to round. However, in the case of rounding without preheating using only the laser, the laser is focused on a small point by focusing the laser spot.

Therefore, compared with the portion scanned by such local heating, heat is less likely to spread as a whole, resulting in a large difference in temperature (temperature gradient) in the glass. Therefore, the probability of breakage due to thermal stress generated by the internal temperature difference increases. In addition, in order to prevent this, there is a problem in that a separate heat treatment and post-treatment process are required on the glass substrate, thereby inevitably slowing down the processing speed of the glass substrate.

In addition, a method of preheating using separate equipment may be performed before rounding using a laser. However, this method is inefficient in terms of process, and the system also becomes large. In other words, there is a problem that takes a long time to preheat up to 500 ℃ ~ 600 ℃ by using other equipment (dryer, brazier, etc.) on the glass substrate, and eventually inhibits the processing speed. In addition, there is a problem that a large working space is required because the system needs to have a separate preheating equipment.

Therefore, the present invention has been made to solve the above problems, without rounding using a conventional wheel, it is to round the edge of the glass substrate using a laser beam. Therefore, as in the present invention, a rounding process of the glass substrate is performed through a melting process using a laser beam as a heat source. Therefore, it is possible to reduce the occurrence of micro-cracks and fine glass particles to improve the problems of strength and wiring.

In addition, the present invention can improve the efficiency of the process by performing a rounding process by continuously scanning the laser beam on the preheated and preheated glass substrate of the glass substrate. Thus, as described above, when the laser is processed without preheating using only the laser, the laser is focused on a small point by focusing the laser spot, thereby solving the problem of local heating. In addition, when the corner of the glass substrate is rounded by the rounding device of the present invention, it is possible to prevent breakage due to thermal stress due to an internal temperature difference.

In addition, it is possible to increase the processing speed by using a torch spaced apart from the laser beam scanning means at regular intervals in one rounding device rather than using a separate preheating device.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

An object of the present invention, the glass substrate rounding device, the body having a bottom surface and a side; A processing unit fixing plate connected to a side of the body and moving upward or downward; A torch connected to the lower part of the processing unit and preheating an edge of the glass substrate; A laser beam scanning means connected to a lower part of the processing unit and scanning the laser beam at a corner of the glass substrate preheated by the torch to round the glass substrate; A one-axis precision stage installed at the bottom of the body and capable of reciprocating the glass substrate in a first direction; And it can be achieved as a glass substrate rounding device comprising a control unit for controlling at least one of the moving speed of the processing unit fixed plate and the feed speed of the single-axis precision stage.

It may be characterized in that it further comprises a first adjusting means provided between the processing unit fixing plate and the torch to reciprocate the torch in the first direction.

It may be characterized in that it further comprises a second adjusting means provided between the processing unit fixing plate and the laser beam scanning means for reciprocating the laser beam scanning means in the first direction.

At least one of the first adjusting means and the torch and between the second adjusting means and the laser beam scanning means may further include a rotating body, and the torch or the laser beam scanning means may be rotated.

The laser beam scanning means may further include a lens movable upward or downward.

The laser beam may be characterized as being a CO ₂ laser beam.

The glass substrate may further include a glass substrate fixing part mounted on a single axis precision stage to vertically fix the glass substrate and relatively convey the glass substrate in a second direction having a predetermined angle with respect to the first direction.

The controller may control at least one of the first adjusting means and the second adjusting means to adjust the distance between the torch and the laser beam scanning means.

The controller may control the rotating body to adjust the scan angle of the torch or the scan angle of the laser beam.

A plurality of torch and laser beam scanning means are provided on the processing unit fixing plate, and a plurality of single-axis precision stages are provided on the bottom of the body to preheat glass substrates fixed to each of the single-axis precision stages with a torch, The laser beam may be rounded by scanning.

In another category, an object of the present invention is to provide a rounding method using a glass substrate rounding device, the method comprising: fixing a glass substrate to a single axis precision stage that enables the glass substrate to be transported forward or backward; Preheating the edges of the glass substrate by the torch connected to the processing unit fixing plate which is moved by the one-axis precision stage to move upward or downward; And rounding the edge of the glass substrate preheated by the torch by scanning the laser beam by the laser beam scanning means connected to the processing unit fixing plate by the movement of the single-axis precision stage. It can be achieved with a rounding method.

In the preheating step, the distance between the torch and the laser beam scanning means may be adjusted by reciprocating the torch in a first direction with a first adjusting means provided between the processing unit fixing plate and the torch.

In the rounding step, the distance between the torch and the laser beam scanning means may be adjusted by reciprocating the laser beam scanning means in a first direction with a second adjusting means provided between the processing unit fixing plate and the laser beam scanning means. have.

A rotating body is provided between at least one of the first adjusting means and the torch and between the second adjusting means and the laser beam scanning means to provide rotational freedom to each of the torch and the laser beam scanning means to adjust the scanning angle on the glass substrate. It can be characterized.

In the rounding step, the lens may be further included in the laser beam scanning means to adjust the degree of integration of the laser beam scanned on the glass substrate.

The laser beam may be characterized as being a CO ₂ laser beam.

The glass substrate fixing part may be mounted on the single axis precision stage to fix the glass base, and the glass substrate fixing part may relatively move the glass substrate in a second direction having a predetermined angle with respect to the first direction.

The torch and laser beam scanning means are respectively provided on the fixed part of the processing part, and a plurality of 1-axis precision stages are provided on the bottom of the body to preheat the glass substrate fixed to each of the 1-axis precision stages with a torch, and the laser beam scanning means. The laser beam may be rounded by scanning.

Therefore, according to one embodiment of the present invention as described above, there is an advantage that the rounding process can be performed continuously after preheating the glass substrate for flat panel display using a torch and a laser. Preheating by the torch has the effect of reducing the thermal stress to improve the breakage rate. In addition, the processing speed is faster than the laser only processing has the advantage.

In addition, the torch has a sufficient heat input capability as a preheating heat source and has a simple structure, which has the advantage of being efficient in terms of processes and systems compared to other preheating methods. In addition, the torch, the laser beam scanning means, the stage, the fixed axis of the processed part, and the like are provided in each of the processed parts and the inside, which has the advantage of being able to flexibly cope with changes according to the thickness and processing purpose of the glass.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various other modifications and variations are possible without departing from the spirit and scope of the present invention. Are all within the scope of the appended claims.

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

<Configuration of Rounding Device for Flat Display Glass Substrate>

Hereinafter will be described the configuration of the rounding device of the glass substrate 10 for a flat display according to an embodiment of the present invention. First, Figure 3 shows a perspective view of a rounding device for a flat panel display glass substrate. As shown in FIG. 3, the rounding device includes a body 100 and a processing unit fixing plate 110 connected to the body 100, a first adjusting means 210, a second adjusting means 310, a torch 200, A laser beam scanning means 300, a lens 320, a glass substrate fixing portion 410, a one-axis precision stage 400, and a control unit 500 is provided.

The body 100 has a side surface 130 to which the bottom portion 120 on which the single-axis precision stage 400 is mounted and the processing unit fixing plate 110 are connected. The processing unit fixing plate 110 is movable up or down. The shandong is controlled by the control unit 500 and the distance between the glass substrate 10 and the laser beam scanning means 300 and the distance between the glass substrate 10 and the torch 200 as the shandong of the processing unit fixing plate 110. The distance is adjusted.

In addition, the first adjusting means 210 and the second adjusting means 310 are coupled to the processing unit fixing plate 110. The torch 200 is connected to the first adjusting means 210, and the laser beam scanning means 300 is connected to the second adjusting means 310. The controller 500 may move the first adjusting means 210 and the second adjusting means 310 forward or backward (first direction). Therefore, the distance between the torch 200 fixed to the first adjusting means 210 and the laser beam scanning means 300 connected to the second adjusting means 310 is adjusted.

In addition, Figure 4 shows a front view of the rounding device according to an embodiment of the present invention from the rear. As shown in FIG. 4, the rotating body 600 is provided between the first adjusting means 210 and the torch 200. The control unit 500 controls the rotating body 600 to give the torch 200 rotational freedom in all directions. By providing rotation degrees of freedom to the torch 200, the scanning angle of the flame 220 that is scanned onto the glass substrate 10 may be adjusted. Therefore, the edge 20 of the glass substrate 10 is heated to an appropriate preheating temperature.

The laser beam scanning means 300 also includes a lens 320. The lens 320 is movable up and down. The lens 320 is generated by the laser beam scanning means 300 to adjust the degree of integration of the laser beam 330 scanned on the glass substrate 10. And, the single-axis precision stage 400 is provided with a glass substrate fixing portion 410. Therefore, the glass substrate 10 is fixedly installed perpendicular to the glass substrate fixing part 410. The glass substrate 10 is moved forward and backward (first direction) by the movement of the single-axis precision stage 400.

In addition, the glass substrate fixing part 410 is movable in the left and right (second direction) in the one-axis precision stage 400. Therefore, the laser beam 330 scanned on the glass substrate 10 moves relatively to the left and right. The movement speed of the one-axis precision stage 400 and the left and right movement of the glass substrate fixing part 410 are controlled by the controller 500. The radius of the rounded corners of the rounded glass substrate 10 is determined by adjusting the moving speed of the single-axis precision stage 400 and the horizontal movement of the glass substrate fixing part 410.

Figure 5a shows a side view of the glass substrate rounding device of the present invention. As shown in FIG. 5A, the torch 200 preheats a portion of the corner 20 of the glass substrate 10. The first adjusting means 210 and the second adjusting means 310 are coupled to the processing unit fixing plate 110. The torch 200 is connected to the first adjusting means 210, and the laser beam scanning means 300 is connected to the second adjusting means 310. In addition, the rotating body 600 is provided between the first adjusting means 210 and the torch 200, and the rotating body 600 is also provided at the second adjusting means 310 and the laser beam scanning means 300. have.

<Operation of the rounding device for flat display glass substrates>

Hereinafter, with reference to the accompanying drawings will be described the operation, operation of the rounding device of the glass substrate for a flat panel display.

The distance between the torch 200 and the laser beam scanning means 300 is an important technical point in the present invention. First, the torch 200 preheats the edge 20 to the glass substrate 10 fixed vertically to the one-axis precision stage 400. Then, the laser beam 330 is scanned and rounded on the preheated portion of the glass substrate 10 by the laser beam scanning means 300 spaced apart from the torch 200 by a certain distance by the movement of the single-axis precision stage 400. do.

Therefore, the distance between the torch 200 and the laser beam scanning means 300 determines the time before preheating the glass substrate 10 with the torch 200 and scanning the laser beam 330. During this time, the edge 20 of the glass substrate is naturally cooled, and when the laser beam 330 is scanned, the temperature of the edge 20 is not locally heated by the laser beam 330, and the laser beam 330 Thermal stress by) should be below the critical value. That is, when the laser beam 330 is scanned, the temperature of the glass substrate 10 of the portion to be scanned determines the quality of the product after rounding.

The distance between the torch 200 and the laser beam scanning means 300 is determined by moving the first adjusting means 210 and the second adjusting means 310 in the first direction. First, the edge 20 of the glass substrate 10 is preheated by the flame 220 generated in the torch 200 by the movement of the single-axis precision stage 400. Then, the laser beam 330 is scanned on the glass substrate 10 by the laser beam scanning means 300 coupled to the second adjusting means 310 so that the glass substrate 10 is rounded.

In addition, as shown in Figure 5a, between the first adjusting means 210 and the torch 200 is provided with a rotating body (600). In addition, the rotating body 600 is provided between the second adjusting means 310 and the laser beam scanning means 300. The rotating body 600 is provided to impart rotational degrees of freedom to each of the torch 200 and the laser beam scanning means 300. The controller 500 may control the scan angle of the flame 220 that is scanned by the torch 200 to the glass substrate 10 by controlling the rotating body 600.

FIG. 5B shows a side view of the rounding device of the present invention, wherein the edge 20 portion of the glass substrate 10 preheated by the torch 200 is rounded by the laser beam scanning means 300. In addition, the laser beam 330 generated by the laser beam scanning means 300 is controlled by controlling the rotating body 600 provided between the second adjusting means 310 and the laser beam scanning means 300. The scanning angle to be injected is controlled. As shown in FIGS. 5A and 5B, the single-axis precision stage 400 continuously moves so that the edge 20 of the preheated and preheated glass substrate 10 is moved to the laser beam 330 by the torch 200. The scanning and rounding process is performed continuously.

6 illustrates a block diagram of components controlled by the controller 500. As shown in FIG. 6, the controller 500 controls the one-axis precision stage 400 to adjust the moving speed. The rounding process time is determined by the moving speed. The moving speed will be determined according to the thickness of the glass substrate 10 to be preheated, the time required to preheat to the appropriate temperature, and the degree of integration of the laser beam 330. In addition, the controller 500 controls the first adjusting means 210 and the second adjusting means 310 to adjust the distance between the torch 200 and the laser beam scanning means 300.

The controller 500 controls the processing unit fixing plate 110 to move the processing unit fixing plate 110 upward or downward. Therefore, the distance between the torch 200 and the glass substrate 10 and the distance between the laser beam scanning means 300 and the glass substrate 10 are adjusted. In addition, the control unit 500 controls the rotating body 600 to adjust the scan angle of the flame 220 generated in the torch 200 and injected into the glass substrate 10. The scanning angle of the laser beam 330 generated by the laser beam scanning means 300 and scanned on the glass substrate 10 is adjusted. The glass substrate fixing part 410 coupled to the one-axis precision stage 400 is controlled to move from side to side.

<How to round a glass substrate with a rounding device>

Hereinafter, a method of rounding the glass substrate 10 used in the flat panel display with the rounding device according to an embodiment of the present invention will be described. First, FIG. 7 shows a flowchart of a method of rounding the glass substrate 10 with a rounding device.

The glass substrate 10 is fixed to the single-axis precision stage 400 to move the glass substrate 10 forward or backward (S10). As described above, the one-axis precision stage 400 is installed on the bottom 120 of the body 100 and moves forward or backward to transport the glass substrate 10 fixedly installed. By moving the single-axis precision stage 400, the edge 20 of the glass substrate 10 is positioned below the torch 200 connected to the processing unit fixing plate 110 that is movable upward or downward. Then, the flame 220 is generated in the torch 200 to preheat the edge 20 of the glass substrate 10 (S20).

In the preheating step, the controller 500 controls the first adjusting means 210 to adjust the position of the torch 200 by moving forward or backward of the first adjusting means 210. In addition, by controlling the rotating body 600 provided between the first adjusting means 210 and the torch 200 to adjust the scanning angle of the flame 220 is injected to the edge of the glass substrate (20). In addition, the edge 20 to be scanned by moving the glass substrate fixing part 410 from side to side by controlling the glass substrate fixing part 410 provided in the single-axis precision stage 400 to fix the glass substrate 10 vertically. Adjust the part.

In addition, as the axial precision stage 400 continuously moves, the edge 20 of the glass substrate 10 preheated by the torch 200 is spaced apart from the torch 200 on the processing unit fixing plate 110. The beam scanning means 300 scans the laser beam 330 to round. That is, the glass substrate 10 reaches the lower portion of the laser beam scanning means 300 while the one-axis precision stage 400 continues to move. When the glass substrate edge 20 preheated by the torch 200 is positioned below the laser beam scanning means 300, the edge of the glass substrate 10 where the laser beam 330 generated by the laser beam scanning means 300 is preheated. (20) to be rounded by scanning (S30). When the laser beam 330 is scanned, the temperature of the edge 20 should have a proper temperature. The appropriate temperature means a temperature at which thermal stress due to local heating can be below a threshold value by scanning of the laser beam 330.

When the laser beam 330 is scanned, the controller 500 controls the lens 320 provided in the laser beam scanning means 300 to adjust the degree of integration of the laser beam 330. Then, the second adjusting means 310 is controlled to adjust the distance between the torch 200 and the laser beam scanning means 300. Then, the scanning angle of the laser beam 330 is adjusted by controlling the rotating body 600 provided between the second adjusting means 310 and the laser beam scanning means 300. The laser beam 330 generated by the laser beam scanning means 300 is scanned onto the glass substrate 10, and the edges 20 of the glass substrate 10 are rounded while the glass substrate fixing part 410 is moved left and right. do. This preheating and scanning of the laser beam 330 is made continuously while the one-axis precision stage 400 is moved, rounding the entire corner 20 of the glass substrate 10 (S40).

In addition, the glass substrate may be rounded by a rounding device having a plurality of single-axis precision stages 400 and laser beam scanning means 300. Therefore, the glass substrates are fixed to each one-axis precision stage 400, and the plurality of glass substrate edges 20 are rounded while each one-axis precision stage 400 is moved.

<Another Embodiment (Multi Rounding Device)>

8 is a perspective view of a multi-glass substrate rounding device including a plurality of single-axis precision stage 400, torch 200, and laser beam scanning means 300. As shown in FIG. 8, three single-axis precision stages 400 are installed on the bottom portion 120 of the rounding device body 100. The glass substrate 10 is fixed to each glass substrate fixing part 410. Accordingly, the glass substrate 10 may be rounded while each of the single-axis precision stages 400 moves. One rounding device may round the plurality of glass substrates 10, thereby increasing work efficiency.

FIG. 9 illustrates a front view of a multi-glass substrate rounding device having a plurality of single-axis precision stages 400, torch 200, and laser beam scanning means 300. As shown in FIG. 9, three single-axis precision stages 400 are installed on the bottom portion 120 of the body 100, and the single-axis precision stages 400 are moved by the movement of each single-axis precision stage 400. The glass substrate 10 fixed to the round is rounded. Each glass substrate 10 is preheated by the movement of each of the single-axis precision stage 400 and rounded by the laser beam generating means 300. The configuration and operation of the laser beam scanning means 300 that rounds the edge of the glass substrate 10 by scanning the torch 200 and the laser beam 330 that preheat the edge 20 of the glass substrate 10 are described above. Same as bar.

1 is a plan view of a glass substrate before and after rounding,

Figure 2 is a perspective view of a glass substrate rounding device using a conventional laser beam,

3 is a perspective view of a glass substrate rounding device according to an embodiment of the present invention;

4 is a front view of a glass substrate rounding device according to an embodiment of the present invention;

5A is a side view of a glass substrate rounding device in which a torch is preheating a glass substrate, according to an embodiment of the present invention;

5B is a side view of a glass substrate rounding device in which a torch according to an embodiment of the present invention preheats the glass substrate and the laser beam scanning means rounds the preheated glass substrate portion.

6 is a block diagram showing a signal flow of a control unit according to an embodiment of the present invention;

7 is a front view of a glass substrate rounding device having a plurality of single-axis precision stages, a torch, and laser beam scanning means according to an embodiment of the present invention;

8 is a flow chart of a glass substrate rounding device according to an embodiment of the present invention

FIG. 9 is a perspective view of a glass substrate rounding device having a plurality of single-axis precision stages, a torch, and a laser beam scanning means according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: glass substrate

20: glass substrate edge

30: rounded corners

40: mirror

100: body

110: processing part fixed plate

120: bottom part

130: side

200: torch

210: first adjusting means

220: flame

300: laser beam scanning means

310: second adjusting means

320: a lens

330: laser beam

400: 1 axis precision stage

410: glass substrate fixing part

500: control unit

600: rotating body

Claims (18)

In the glass substrate rounding device, A body having a bottom portion and a side surface; A processing unit fixing plate connected to a side of the body and moving upward or downward; A torch connected to a lower portion of the processing part fixing plate and preheating an edge of the glass substrate; A laser beam scanning means connected to a lower portion of the processing part fixing plate and scanning the laser beam on an edge of the glass substrate preheated by the torch to round the glass substrate; A one-axis precision stage installed at the bottom of the body and capable of reciprocating the glass substrate in a first direction; And And a control unit for controlling at least one of a moving speed of the processing unit fixing plate and a feed speed of the single-axis precision stage. The method of claim 1, And a first adjusting means provided between the processing unit fixing plate and the torch to reciprocate the torch in a first direction. The method according to claim 1 or 2, And a second adjusting means provided between the processing unit fixing plate and the laser beam scanning means to reciprocate the laser beam scanning means in a first direction. The method of claim 3, wherein A rotating body is further included in at least one of the first adjusting means and the torch and between the second adjusting means and the laser beam scanning means. And a glass substrate rounding device capable of rotating the torch or the laser beam scanning means. The method of claim 1, And the laser beam scanning means further comprises a lens movable upward or downward. The method of claim 1, The laser beam is a glass substrate rounding device, characterized in that the CO ₂ laser beam. The method of claim 1, And a glass substrate fixing part mounted on the one-axis precision stage to vertically fix the glass substrate and relatively conveying the glass substrate in a second direction having a predetermined angle with respect to the first direction. Glass substrate rounding device. The method of claim 3, wherein The control unit, And controlling at least one of the first adjusting means and the second adjusting means to adjust a distance between the torch and the laser beam scanning means. The method of claim 4, wherein The control unit, And controlling the rotating body to adjust the scanning angle of the torch or the scanning angle of the laser beam. The method according to any one of claims 1, 2, 5, 6 or 7, The torch and the laser beam scanning means are provided in a plurality on the processing unit fixing plate, A plurality of one-axis precision stages are provided at the bottom of the body to preheat the glass substrate fixed to each of the one-axis precision stages with the torch, and scan and round the laser beam with the laser beam scanning means. Glass substrate rounding device. In the rounding method using the glass substrate rounding device of any one of claims 1, 2, 5, 6 or 7. Securing the glass substrate to a single-axis precision stage that enables the glass substrate to be moved forward or backward; Preheating the edges of the glass substrate by a torch connected to the processing unit fixing plate which is moved to the upper or lower portion by moving the one-axis precision stage; And And rounding the glass substrate preheated by the torch by the laser beam scanning means connected to the processing unit fixing plate by scanning the laser beam by the movement of the single-axis precision stage. Rounding method using the device. The method of claim 11, In the preheating step, Using a glass substrate rounding device to adjust the distance between the torch and the laser beam scanning means by reciprocating the torch in a first direction by a first adjusting means provided between the processing unit fixing plate and the torch. Rounding method. 13. The method of claim 12, In the rounding step, And adjusting the distance between the torch and the laser beam scanning means by reciprocating the laser beam scanning means in a first direction by a second adjusting means provided between the processing unit fixing plate and the laser beam scanning means. Rounding method using glass substrate rounding device. The method of claim 13, At least one of the first adjusting means and the torch and between the second adjusting means and the laser beam scanning means includes a rotating body to impart rotational freedom to each of the torch and the laser beam scanning means, thereby providing the glass substrate. Rounding method using a glass substrate rounding device, characterized in that for adjusting the scanning angle. The method of claim 11, In the rounding step, And a lens further included in the laser beam scanning means to adjust the degree of integration of the laser beam scanned on the glass substrate. The method of claim 11, The laser beam is a rounding method using a glass substrate rounding device, characterized in that the CO ₂ laser beam. The method of claim 11, A glass substrate fixing part is mounted on the single-axis precision stage to fix the glass base, and the glass substrate fixing part relatively moves the glass substrate in a second direction having a predetermined angle with respect to the first direction. Rounding method using a substrate rounding device. The method of claim 11, The torch and the laser beam scanning means are respectively provided in a plurality of the processing unit fixing plate, A plurality of one-axis precision stages are provided at the bottom of the body to preheat the glass substrate fixed to each of the one-axis precision stages with the torch, and scan and round the laser beam with the laser beam scanning means. Rounding method using a glass substrate rounding device.

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