KR20150130139A - Apparatus and method for coating both faces of panel - Google Patents

Abstract

Disclosed are an apparatus and a method for coating both sides of a panel, capable of sequentially coating one surface and the other surface of a panel. The disclosed apparatus for coating both sides of a panel comprises: a first coating unit which coats one surface of a flat panel with a coating agent; a first curing unit which cures the coating agent spread on one surface of the panel to form a first coating layer; a panel reverse unit which reverses the panel to switch the upper surface of the panel, on which the first coating layer is formed, to the lower surface; a second coating unit which coats the other surface of the panel which has been turned over; a second curing unit which cures the coating agent spread on the other surface of the panel to form a second coating layer; and a panel transfer unit which transfers the panel to sequentially pass through the first coating unit, the first curing unit, the panel reverse unit, the second coating unit, and the second curing unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a two-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel double-side coating apparatus, and more particularly, to a panel double-side coating apparatus and a panel double-side coating method capable of sequentially coating one side surface and the other side surface of a panel.

For example, in an electronic device related industry such as a display device, a smart phone, etc., there is a case where a surface treatment is performed in which a specific coating liquid is coated on both sides of a panel such as a glass plate. Conventionally, in order to coat both sides of a panel, a so-called dipping method of soaking the panel in a bath containing a coating liquid has been used. However, according to the dipping method, it is difficult to control the thickness of the coating layer thinly and precisely. Coating the panel with a slot die allows thin and precise control of the thickness, but after one side of the panel is coated and cured, the operator turns the panel upside down and puts the panel back on the coating device, Coating and curing, it is impossible to completely automate the two-side coating operation, which slows the operation speed and lowers the productivity.

Korean Patent Registration No. 10-0781327 Korean Patent Publication No. 10-1111245

The present invention provides a panel double-side coating apparatus and a panel double-side coating method in which one side of a panel is coated and then the panel is automatically turned over to coat and discharge the other side.

The present invention provides a panel double-side coating apparatus and a panel double-side coating method for sequentially coating one side surface and the other side surface of a panel, instead of dipping the panel in a coating liquid.

The present invention relates to a flat panel, comprising a first coating unit for applying a coating agent to one side of a flat panel, a first curing unit for curing the coating liquid applied to one side of the panel to form a first coating layer, A second coating unit for applying a coating liquid to the other side of the inverted panel, and a second coating unit for curing the coating liquid applied to the other side of the panel And a second curing unit for forming a second coating layer on the panel, and a second curing unit for forming the panel so that the panel sequentially passes through the first coating unit, the first curing unit, the panel reversing unit, the second coating unit, The present invention provides a panel double-side coating apparatus having a panel transfer unit for transferring a panel.

The first coating unit or the second coating unit may have a slot die for applying the coating liquid to the upper side of the panel through a slot extending in the width direction of the panel .

Wherein the first coating unit or the second coating unit comprises a table for supporting the panel while the coating liquid is applied to the panel and a panel for transferring the panel so that the panel enters the table and is discharged to the outside from the table, Wherein the panel conveying means includes a chain rotatably supported by a plurality of sprockets, and when the chain is rotated higher than an upper side of the table and circulates and rotates, As shown in Fig.

The first coating unit or the second coating unit may include a lip cleaner that wipes a droplet of the coating liquid which is moved in the longitudinal direction of the slot die and is formed at the lower end of the slot die when the slot die does not apply the coating liquid to the panel a lip cleaner may be further provided.

The first curing unit or the second curing unit may include an ultraviolet light irradiator for curing the coating liquid by irradiating an ultraviolet ray onto an upper surface of the panel.

The first coating unit and the second coating unit may be arranged side by side and the panel transfer unit may include at least one direction switching conveyor for switching the proceeding direction of the panel.

Wherein the direction changing conveyor includes a plurality of first rollers uniformly dispersed to rotate in contact with the bottom surface of the panel to convey the panel in one direction and a second roller that rotates in contact with the bottom surface of the panel, And a plurality of second rollers uniformly distributed between the plurality of first rollers and having a radius larger than the radius of the first roller, The rollers are movable up and down so that when the plurality of first rollers are rotated in a state in which the upper outer circumferential portion of the plurality of second rollers is positioned lower than the upper outer circumferential portion of the plurality of first rollers, When the plurality of second rollers are rotated in a state in which the upper outer circumferential portion of the plurality of second rollers is positioned higher than the upper outer circumferential portion of the plurality of first rollers, As shown in FIG.

Wherein the panel is put into the first coating unit with the other side being covered by a flexible cover, and the panel double-side coating apparatus is provided between the panel reversing unit and the second coating unit And a cover removing unit for peeling the cover from the other side of the panel.

The cover removing unit includes a pair of rollers which are in close contact with each other to form a nip, a panel covered with the cover through the nip, and an adhesive tape for attaching the adhesive tape to the cover by passing the adhesive tape. A cover separator which has an attaching unit and an edge formed at an acute angle and separates the cover with the adhesive tape from the panel by pressing the cover to which the adhesive tape is attached by the edge, And a cover collection roller for collecting the cover to which the adhesive tape separated from the panel is attached.

The panel transfer unit includes a loading conveyor for advancing the panel in parallel with the Y axis positive direction and transferring the panel to the first coating unit, a panel conveying unit for moving the panel discharged from the first coating unit in the Y axis positive direction A second conveyor for advancing the panel discharged from the first curing unit in parallel with the positive direction of the Y axis, a second conveyor for advancing the panel in parallel with the first curing unit, A first direction switching conveyor interposed between the panel inverting unit and the third conveyor for switching the proceeding direction of the panel to a direction parallel to the positive direction of the X axis and for transferring the panel to the panel inverting unit, A second direction switching conveyor for switching the proceeding direction of the panel discharged from the panel reversing unit to a direction parallel to the direction of the Y axis negative (-), a panel for switching the direction of the panel in parallel with the direction of the Y axis negative remind A fourth conveyor for advancing the panel discharged from the cover removing unit in parallel with the direction of the Y axis negative (-) and transferring the panel to the second coating unit, a third conveyor for conveying the panel from the second coating unit (-) direction and feeds the panel to the second curing unit, and a fifth conveyor for advancing the panel, which is discharged from the second curing unit, in parallel with the Y axis negative direction And an unloading conveyor for discharging the unloading conveyor to the outside.

The panel inversion unit may include a transducer for picking up the panel and rotating the panel by 180 DEG about a horizontal axis of rotation such that the upper and lower sides of the panel are inverted, And a panel conveyor for conveying the panel inverted by the inverter to the outside, wherein the panel conveyor includes a pair of bridges for supporting the panel together at a position where the panel is picked up, Wherein the pair of bridges are switchable to a first posture that is mutually connected to support the panel horizontally and a second posture that is inclined so that the panel does not collide with the panel when it is picked up and rotated by the reverser Lt; / RTI >

The present invention also provides a method of manufacturing a panel, comprising the steps of: a first coating step of applying a coating agent to one side of a flat panel; a first curing step of curing the coating liquid applied to one side of the panel to form a first coating layer; A second coating step of applying a coating solution to the other side of the inverted panel, and a second coating step of coating the coating solution applied on the other side of the panel with a curing agent And a second curing step of forming a second coating layer on the substrate.

The first coating step or the second coating step may include applying a coating liquid to an upper surface of the panel using a slot die having a slot extending in the width direction of the panel, .

The first curing step or the second curing step may include the step of curing the coating liquid by irradiating ultraviolet light onto the upper surface of the panel.

A cover attaching step of covering a flexible cover on the other side of the panel prior to the first coating step to protect the panel, and a step of, between the panel reversing step and the second coating step, And removing the cover from the other side of the cover.

According to the present invention, since both sides of a panel such as a glass plate can be coated with precision coating equipment such as a slot die without dipping, the thickness of the coating layer can be thinned and precision And the quality of the coating layer can be enhanced.

Further, the panel is automatically turned over after the one side of the panel is coated, and the other side is coated and discharged without depending on the manual labor required for the workforce (human power), so that the working speed is improved and the productivity is improved.

1 is a plan view of a panel double-sided coating apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating a panel that is inserted into the panel double-sided coating apparatus of FIG. 1, and FIG. 3 is a perspective view illustrating a panel that is discharged through a panel double-side coating apparatus of FIG.
Figs. 4 and 5 are views showing the first coating unit of Fig. 1, Fig. 4 is a sectional view seen from the front, and Fig. 5 is a sectional view from a side view.
6 is an enlarged view of VI of Fig. 4. Fig.
Fig. 7 is an enlarged view of VII in Fig. 4. Fig.
Fig. 8 is a front view of the first curing unit of Fig. 1; Fig.
Figs. 9 and 10 are views showing the first direction changing conveyor of Fig. 1, Fig. 9 is a plan view, and Fig. 10 is a front view.
Fig. 11 and Fig. 12 are views showing the panel inversion unit of Fig. 1, Fig. 11 is a plan view, and Fig. 12 is a front view.
13 is an enlarged plan view of the panel feed roller of Fig.
Figs. 14 to 17 are front sectional views sequentially showing panel inversion methods using the panel inversion units of Figs. 11 and 12. Fig.
FIG. 18 is a front view of the cover removing unit of FIG. 1; FIG.
FIG. 19 is an enlarged view of the ZOOM portion of FIG. 18, showing a state in which the cover is peeled off while the panel is being fed.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a panel double-side coating apparatus and a panel double-side coating method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The terminology used herein is a term used to properly express the preferred embodiment of the present invention, which may vary depending on the intention of the user or operator or the custom of the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

FIG. 1 is a plan view of a panel double-side coating apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating a panel to be inserted into the double-side panel coating apparatus of FIG. 1, And FIG. Referring to FIGS. 1 to 3, a panel double-sided coating apparatus 10 according to an embodiment of the present invention is formed by coating and curing a coating agent on both sides of a panel 1 such as a glass plate, The first coating unit 20, the first curing unit 55, the panel reversing unit 100, the cover removing unit 170, the second coating unit 197 , A second curing unit 198, and a controller 199. [

The panel transfer unit is configured such that the panel 1 includes a first coating unit 20, a first curing unit 55, a panel reversing unit 100, a cover removal unit 170, a second coating unit 197, Is a unit for transferring the panel 1 to pass through the second curing unit 198. The panel conveying unit includes a loading conveyor 11, a first conveyor 12, a second conveyor 13, a first direction change conveyor 60, a second direction change conveyor 165, A second conveyor 14, a fourth conveyor 15, a fifth conveyor 16, and an unloading conveyor 17. The loading conveyor 11 is a conveyor in which the panel 1 enters the panel double-sided coating apparatus 10 and advances the panel 1 in parallel to the positive direction of the Y axis to form the first coating unit 20 Transfer. The first conveyor 12 advances the panel 1 discharged from the first coating unit 20 in parallel to the positive direction of the Y axis and transfers the panel 1 to the first curing unit 55. The second conveyor 13 advances the panel 1 discharged from the first curing unit 55 in parallel to the positive direction of the Y axis and transfers the panel 1 to the first direction switching conveyor 60.

The first direction switching conveyor 60 is interposed between the second conveyor 13 and the panel inversion unit 100 and converts the traveling direction of the panel 1 to a direction parallel to the positive direction of the X axis The panel 1 is transferred to the panel inversion unit 100. The second direction switching conveyor 165 is interposed between the panel inverting unit 100 and the third conveyor 14 so that the advancing direction of the panel 1 discharged from the panel reversing unit 100 is Y- To the direction parallel to the direction of the arrow.

The third conveyor 14 conveys the panel 1, which has been redirected in parallel with the direction of the Y axis negative (-), to the cover removing unit 170. The fourth conveyor 15 advances the panel 1 discharged from the cover removal unit 170 in parallel to the direction of the Y axis negative (-) and transfers it to the second coating unit 197. The fifth conveyor 16 advances the panel 1 discharged from the second coating unit 197 in parallel with the direction of the Y axis negative (-), and transfers the panel 1 to the second curing unit 198. The unloading conveyor 17 advances the panel 1 discharged from the second curing unit 198 parallel to the Y axis negative direction and discharges the same to the outside of the panel double-sided coating apparatus 10.

The panel 1 is mounted on a loading conveyor 11 in a state in which a cover 7 that is flexible and hermetically attached to a lower side is mounted and the upper side without the cover 7 is exposed And enters the first coating unit 20. Hereinafter, the side to which the cover 7 is not attached is referred to as one side of the panel 1, and the side to which the cover 7 is attached is referred to as the other side of the panel 1. On the other hand, in the panel 1, the first coating layer 5 is formed on one side, the second coating layer 6 is formed on the other side, the cover 7 is removed, and the unloading conveyor 17 And is discharged from the panel double-sided coating apparatus 10. At this time, the upper and lower surfaces of the panel 100 are turned upside down by the panel reversing unit 100 so that the one side that was the upper side becomes the lower side and the other side that was the lower side becomes the upper side.

The first coating unit 20 is a unit for applying a coating agent to one side of the panel 1 and the first curing unit 55 cures the coating liquid applied on one side of the panel 1 The panel reversing unit 100 is a unit for reversing the panel 1 so that the upper and lower sides of the panel 1 on which the first coating layer 5 is formed are reversed, The removal unit 170 is a unit for removing the cover 7 from the other side of the panel 1 and the second coating unit 197 is a unit for removing the cover 7 from the other side of the panel 1, And the second curing unit 198 is a unit for forming the second coating layer 6 by curing the coating liquid coated on the other side of the panel 1. [ The controller 199 controls the operation of each of the above-mentioned units and automatically performs a double-side coating operation when the panel 1 is mounted on the loading conveyor 11 so as to be discharged to the unloading conveyor 17, And controls the timing of starting and stopping the operation.

4 and 5 are views showing the first coating unit of FIG. 1, FIG. 4 is a front view, FIG. 5 is a sectional view, and FIG. 6 is an enlarged view of FIG. And Fig. 7 is an enlarged view of VII of Fig. 4 to 7, the first coating unit 20 includes a coating unit base 21, a table 22 supported by the coating unit base 21, a panel transfer means, a table 22, A slot die 40 that can be reciprocated in parallel with the Y axis on the wafer W, and a lip cleaner 50. The table 22 supports the panel 1 while the coating liquid is applied. The panel feeding means feeds the panel 1 in parallel with the Y axis positive direction so that the panel 1 enters the table 22 and is ejected from the table 22 to the outside. The panel transfer means also stops the panel 1 on the table 22 while the coating liquid is being applied.

The panel conveying means includes a chain 37 rotatable in a counterclockwise direction on the basis of FIG. 4, a chain drive motor 25 providing power for circulating the chain 37, and a chain 37 A plurality of lower sprockets 29 and a plurality of upper layer sprockets 31 for supporting and circulating the lower sprockets 29. A shaft (not shown) of the chain drive motor 25 is connected to a motor connection sprocket 26 fastened to a shaft 28 extending parallel to the X axis thereon with a separate chain (not shown) Can be rotated by the power of the motor 25. [ A plurality of drive sprockets 27 provided at regular intervals along the longitudinal direction of the shaft 28 are inserted into the chain 27 together with a plurality of lower layer sprockets 29 and a plurality of upper layer sprockets 31, The chain 37 circulates counterclockwise.

The upper layer sprocket 31 and the lower layer sprocket 29 are supported by the sprocket support frame 33 and the sprocket lift actuator 35 supported by the coating unit base 21 supports the sprocket support frame 33 do. Specifically, the sprocket lifting actuator 35 may include an air pressure cylinder or a hydraulic cylinder. When the cylinder rod (not shown) of the sprocket lift actuator 35 protrudes from the cylinder body (not shown) and rises, the sprocket support frame 33 rises, and as shown by the chain double- An upper layer sprocket 31 and a chain 37 supported thereon protrude above the upper surface 23 of the table 22 and come into contact with the lower surface of the panel 1 supported by the table 22. [ At this time, when the chain drive motor 25 is operated, the chain 37 circulates and rotates, and the panel 1 is held in contact with the chain 37 while being frictioned with the chain 37, .

On the other hand, when the cylinder rod (not shown) of the sprocket lift actuator 35 is contracted and descended by the cylinder body (not shown), the sprocket support frame 33 descends and the upper sprocket 31 and the chain 37 Is lowered below the upper side 23 of the table 22 as shown by the solid line in Fig. Thus, the panel 1 comes into contact with the upper surface 23 of the table 22 and is stopped. When the panel 1 is stopped on the table 22 in alignment with the slot die 40, application of the coating liquid by the slot die 40 is started.

The slot die 40 applies a coating liquid to the upper side of the panel 1 through a slot 42 extending in the width direction of the panel 1, that is, in the direction parallel to the X axis. In order to apply the entire area of the panel 1 with the coating liquid, the slot die 40 moves slowly in a direction parallel to the Y-axis and flows down the coating liquid. Further, the slot die 40 is movable up and down in parallel with the Z-axis so that the distance between the panel 1 and the slot 41 is adjusted.

Specifically, the slot die 40 is fixedly supported on a slot die support beam 44 extending in a direction parallel to the X axis, and both ends of the slot die support beam 44 are supported by a pair And the screws 47 are connected to the motor 45 so as to be rotatable by the power of the slot die lifting motor 45. [ On the other hand, the slot die lifting motor 45 and the screw 47 are supported by a moving block 49 provided at both ends of the slot die support beam 44 and movable in the direction parallel to the Y axis.

Thus, when the panel 1 enters the table 22 and stops at the upper side of the table 22, the screw 47 is rotated by the operation of the slot die lifting motor 45 to rotate the slot die support beam 44 and / The slot die 40 is lowered to a proper gap with the panel 1 and stops. Then, the pair of moving blocks 49 are slowly moved in one direction in parallel with the Y-axis, and the coating solution is applied to the entire area of the side surface of the panel 1 by flowing the coating liquid through the slot die 40. When the application of the coating liquid to the upper surface of the panel 1 is completed, the chain 37 rises above the upper surface of the table 22 to support the panel 1 and circulate and rotate to discharge the panel 1 from the table 22, 1 conveyor 12 (see Fig. 1). Further, the slot die 40 and the moving block 49 return to their original positions.

On the other hand, the slot die 40 returned to the original position should not shed the coating liquid until the new panel 1 is supplied onto the table 22, but the lip of the slot 41 under the action of gravity The droplets of the coating liquid may fall off and the table 22 may be contaminated. The lip cleaner 50 moves in the longitudinal direction of the slot die 40, that is, in the direction parallel to the X axis, when the slot die 40 returns to its original position and does not apply the coating liquid to the panel 1 Wipe off the coating liquid droplets formed on the lower lip 42 of the slot die 40. The lip cleaner 50 reciprocates in a direction parallel to the X axis while wiping the slot die lip 42 by the driving force of the lip cleaner drive motor 53. [ The lip cleaner 50 may be formed of an elastic material such as, for example, Teflon (R).

Sequential operation of the components provided in the first coating unit 20 is controlled by the controller 199 (see FIG. 1). The second coating unit 197 (see FIG. 1) has the same configuration as that of the first coating unit 20 shown in FIGS. 4 and 5, A description thereof will be omitted.

The first curing unit 55 includes a curing unit base 56 and a second curing unit 55 in the first curing unit 55. The first curing unit 55 includes a first curing unit 55, A curing unit conveyor 57 for supporting and conveying the ultraviolet light irradiator 1 and a plurality of ultraviolet light irradiators 58 disposed above the conveyor 57. The ultraviolet light irradiator 58 irradiates an ultraviolet ray onto the upper surface of the panel 1 to cure the coating liquid. The coating liquid may be a photocurable coating liquid which is cured when ultraviolet light is irradiated.

The panel 1 discharged from the first coating unit 20 enters the first curing unit 55 via the first conveyor 12 and is aligned and stopped on the curing unit conveyor 57. A plurality of ultraviolet light irradiators (58) emit ultraviolet light to the panel (1). When the coating liquid is cured by ultraviolet light irradiation for a predetermined time to form the first coating layer 5 (see Fig. 3) on one side of the panel 1, the curing unit conveyor 57 is operated to move the panel 1, Is discharged out of the first curing unit 55 and transferred to the second conveyor 13 (see Fig. 1). The sequential operation of the components provided in the first curing unit 55 is controlled by the controller 199 (see FIG. 1).

On the other hand, the panel double-sided coating apparatus 10 (see Fig. 1) of the present invention is not limited to being provided with a curing unit for curing a coating liquid by ultraviolet light irradiation. For example, A curing unit may be provided. In this case, the coating liquid may be a dry curable coating liquid. The second curing unit 198 (see FIG. 1) has the same configuration as that of the first curing unit 55 shown in FIG. 8, and description thereof will be omitted, so that description of the second curing unit 198 will be omitted do.

Figs. 9 and 10 are views showing the first direction changing conveyor of Fig. 1, Fig. 9 is a plan view, and Fig. 10 is a front view. 9 and 10, the first direction switching conveyor 60 includes a direction changing conveyor base 61, a plurality of first rollers 61 that rotate so that the panel 1 can be conveyed in a direction parallel to the Y axis, And a plurality of second rollers 78 rotating so that the panel 1 can be conveyed in a direction parallel to the X axis.

Specifically, the plurality of first rollers 68 are fixed by being fitted into a plurality of first roller shafts 66 extending parallel to the X axis and spaced equidistantly along a direction parallel to the Y axis, and the first roller power The transmission shaft 64 extends in parallel with the Y-axis and is fastened to one end of the plurality of first roller shafts 66 so as to transmit rotational force. For example, a worm gear fixed at equal intervals in the longitudinal direction of the first roller power transmission shaft 64 can be engaged with gears at one end of the plurality of first roller shafts 66 have. Further, a first roller drive motor 62 supported by the orientation-changing conveyor base 61 is fastened to transmit the rotational force to the first roller power transmission shaft 64. For example, the shafts (not shown) of the first roller power transmission shaft 64 and the first roller driving motor 62 may be engaged with bevel gears (not shown).

The plurality of second rollers 78 are fixed by being fitted in a plurality of second roller shafts 76 extending parallel to the Y axis and spaced equidistantly along a direction parallel to the X axis. The second roller shaft 76 is arranged so as to intersect the first roller shaft 66 and positioned below the first roller shaft 66 and the plurality of second rollers 78 are arranged to be located below the first roller shaft 66, As shown in FIG. The radius of the second roller (78) is larger than the radius of the first roller (68). The second roller power transmission shaft 74 extends in parallel with the X axis and is fastened to one end of the plurality of second roller shafts 76 so as to transmit rotational force. For example, a worm gear fixed at equal intervals in the longitudinal direction of the second roller power transmission shaft 74 can be engaged with gears at one side end of the plurality of second roller shafts 76 have.

On the other hand, the second roller drive motor 72 is supported by the second roller support frame 70 and is fastened to transmit the rotational force to the second roller power transmission shaft 74. For example, the shafts (not shown) of the second roller power transmission shaft 74 and the second roller driving motor 72 may be engaged with each other with a bevel gear (not shown). The second roller drive motor 72, the second roller power transmission shaft 74, the second roller shaft 76 and the second roller 78 are supported by the second roller support frame 70, The direction changing conveyor 60 further includes a lift actuator 80 for moving the second roller support frame 70 up and down.

The lift actuator 80 may include a pneumatic cylinder or a hydraulic cylinder. When the cylinder rod (not shown) rises and protrudes from the cylinder body (not shown), the second roller support frame 70 rises and the upper peripheral portion of the plurality of second rollers 78, 68 are positioned higher than the upper outer circumferential portion. On the contrary, when the cylinder rod descends and is retracted into the cylinder body, the second roller support frame 70 descends so that the upper outer peripheral portion of the plurality of second rollers 79 supported by the second roller support frame 70 is located on the upper outer peripheral portion of the plurality of first rollers 68 The position is lowered.

As described above, when the upper outer peripheral portion of the second roller 79 is positioned lower than the upper outer peripheral portion of the second roller 68, the panel 1 is moved from the adjacent second conveyor 13 (see Fig. 1) +), And then flows into the first direction switching conveyor 60. [0050] At this time, when the first roller driving motor 62 is operated, the first roller 68 rotates while supporting the panel 1, so that the panel 1 further advances parallel to the Y axis positive direction, The first roller driving motor 62 stops when the roller 1 advances to the central portion of the first direction switching conveyor 60. [

When the lift actuator 80 raises the second roller support frame 70, the plurality of second rollers 78 rise and the upper outer peripheral portion of the second roller 78 moves upward from the upper outer peripheral portion of the first roller 68 So that the panel 1 is supported. Then, when the second roller driving motor 72 is operated, the second roller 78 rotates so that the panel 1 advances parallel to the positive X-axis direction and the panel reversing unit 100 ). When the panel 1 is discharged from the first direction change conveyor 60, the second roller drive motor 72 stops operating and the second roller support frame 7 also comes down in place. The sequential operation of the components provided in the above-described first direction switching conveyor 60 is controlled by the controller 199 (see FIG. 1). The second direction switching conveyor 165 (see FIG. 1) has the same configuration as that of the first direction switching conveyor 60 shown in FIGS. 9 and 10, and therefore, the second direction switching conveyor 165 ) Will not be described.

Fig. 11 and Fig. 12 are views showing a panel inverting unit of Fig. 1, Fig. 11 is a plan view, Fig. 12 is a cross-sectional view seen from the front, and Fig. 13 is a plan view showing an enlarged view of the panel conveying roller of Fig. Referring to Figs. 11 and 12, the panel inverting unit 100 includes an inverter 140 and a panel feeder 102. Fig. The inverter 140 picks up the panel 10 and rotates the upper side 2 and the lower side 3 of the panel 1 by 180 ° with respect to the horizontal rotation axis C1 . The rotation axis C1 may be parallel to the Y axis. The panel feeder 102 transfers the panel 1 introduced from the first direction switching conveyor 60 to a position picked up by the inverter 140 and turns the panel 1 upside down by the inverter 140 And discharges the false panel 1 to the second direction switching conveyor 165 outside the panel reversing unit 100. [ The panel feeder 102 can feed the panel 1 in parallel with the positive X-axis direction.

The inverter 140 includes an inverting shaft 141 extending along the rotation axis C1, a shaft support portion 143 rotatably supporting both ends of the inverting shaft 141, And a semi-electric rotary motor 151 connected to the rotary shaft 151 so as to be rotatable about the rotation axis C1. The panel inverting unit 100 further includes an inverting elevating actuator 155 for elevating the inverting shaft 141. The inversion actuator 155 may be, for example, a pneumatic or hydraulic cylinder and is fixedly supported by the panel inversion unit base 101. Specifically, the body 156 of the cylinder is fixed to the panel inversion unit base 101, the upper end of the rod 157 of the cylinder is fastened to the shaft support portion 143, and the cylinder rod 157 When the cylinder rod 157 protrudes upward from the cylinder body 156 and the cylinder rod 157 is inserted into the cylinder body 156 and descends when the cylinder rod 157 is lowered, The inverter 140 is lowered.

The reactor 140 has a plurality of counter-rotating beams 146 and a plurality of suction nozzles 148. A plurality of counteracting beams 146 are supported on the counteracting shaft 141 and extend so as to intersect the counteracting shaft 141 and are spaced apart from each other along the longitudinal direction of the counteracting shaft 141. The plurality of counteracting beams 146 extend parallel to the X axis with respect to when the invertor 140 picks up the panel 1 (see FIG. 2).

The plurality of adsorption nozzles 148 are in contact with one side of the panel 1 (see Fig. 2) where the first coating layer 5 (see Fig. 15) is formed and the cover 7 Thereby adsorbing the panel 1 (see Fig. 15). A plurality of adsorption nozzles 148 are mounted on the plurality of counter-beams 146. Although six adsorption nozzles 148 are distributed in one transverse beam 146 in the illustrated embodiment, smaller or larger numbers of adsorption nozzles 148 are distributed depending on the size and weight of the panel 1 . Although not shown in the drawing, an air flow path is formed in the inside of the counter-rotating beam 146 and the counter-rotating shaft 141 so that a negative pressure is formed on the surface of the panel 1 by the air being sucked through the suction nozzle 148 And an air compressor may be provided at an end of the air passage.

The panel feeder 102 has first and second bridges 103A and 103B supported by the panel inversion unit base 101 so as to be switchable between a first posture and a second posture. The first posture is a posture in which the pair of bridges 103A and 103B are connected to each other so as to horizontally support the panel 1 (see Fig. 15) And is inclined so as not to collide with the panel 1 when it rotates.

The first and second bridges 103a and 103B are respectively connected to a plurality of first and second bridges 103a and 103b spaced apart from each other in parallel to each other so as not to collide with the plurality of counter- A plurality of first and second bridge beams (106, 108), a bridge frame (110) connecting and supporting the plurality of first and second bridge beams (106, 108) And a bridge hinge 104 connecting the base 101 and the bridge frame 110 so as to be rotatable with respect to the horizontal pivotal axes R1 and R2.

The first and second bridge beams 106 and 108 have one side end near the inverting shaft 141 and the other opposite end opposite to the one side end of the bridge hinge 104, Closer to the end. The first and second bridge beams 106 and 108 extend parallel to the X axis on the basis of when the bridges 103A and 103B are in the first posture and are disposed so as not to overlap with the plurality of counteracting beams 146 . The lengths of the first and second bridge beams 106 and 108 are equal to each other and the lengths of the bridge beams 106 and 108 of the first bridge 103A on the basis of the time when the bridges 103A and 103B are in the first posture, And the one side end of the bridge beam 106, 108 of the second bridge 103B are spaced apart with a constant gap larger than the diameter of the counteracting shaft 141. [ The counter shaft 141 is configured to move up and down between the openings when the inverter 140 is raised and lowered. Therefore, the inverter 140 does not collide with the first and second bridges 103A and 103B even if the inverter 140 is raised and lowered when the first and second bridges 103A and 103B are in the first posture.

The panel inverting unit 100 includes a bridge actuator 133 for switching the first bridge 103A and the second bridge 103B from the first posture to the second posture and from the second posture to the first posture . The bridge actuator 133 can be, for example, a pneumatic or hydraulic cylinder and is fastened and supported at the lower end of the base 101. [ Specifically, the lower end of the body 134 of the cylinder is rotatably coupled to the lower end of the base 101 by an actuator hinge 136, and the upper end of the rod 135 of the cylinder is connected to a bridge And is fastened to the frame 110.

When the cylinder rod 135 protrudes from the cylinder body 134, the bridge frame 110 is lifted so that the first and second bridges 103A and 103B rotate around the bridge hinge 104, Posture. Conversely, when the cylinder rod 135 is inserted into the cylinder body 134, the bridge frame 110 is pulled down so that the first and second bridges 103A and 103B are rotated about the bridge hinge 104, And is switched to the second posture. When the first and second bridges 103A and 103B are in the second posture, the plurality of bridge beams 106 and 108 are positioned such that the one side end portion closer to the inverting shaft 141 is lowered from the other side end portion .

Each of the first bridge beams 106 is mounted with a plurality of panel feed rollers 120 that support the panel 1 (see Fig. 15) and rotate to feed the panel 1 in a direction parallel to the X axis. A roller driving motor 112 for providing rotational power to the plurality of panel feed rollers 120 is installed in a pair of bridge frames 110, respectively. The roller drive motor 112 is omitted in Fig.

13, the panel feed roller 120 includes a roller shaft 123 coupled to the first bridge beam 106, a roller body 121 rotated around the roller shaft 123 as a rotation center, A belt fastening gear 125 is provided between the body 121 and the first bridge beam 106. The roller body 121 is made of, for example, an elastic material such as rubber, and contacts the panel 1 (see Fig. 15) to cause the panel 1 to be pulled and moved by frictional force with the roller body 121. The belt fastening gear 125 rotates coaxially with the roller body 121 and the belt conveying rollers 120 mounted on one first bridge beam 106 are driven by one timing belt 117 forming a closed curve, Respectively. The timing belt 117 is also connected to a belt pulley (not shown) provided in a roller drive shaft 114 (see Fig. 1) rotated by the power of the roller drive motor 112 Respectively. The roller drive shaft 114 is provided with a belt pulley corresponding to the first bridge beam 106 on a one-to-one basis.

With this configuration, when the roller driving motor 112 is operated when the first and second bridges 103A and 103B are in the first posture, the roller driving shaft 114 rotates, and the timing belt 117 rotates The belt conveying roller 120 rotates by moving along the path passing through the engagement gear 125 and the belt pulley.

Referring again to FIG. 11, a plurality of guide rollers 130 are mounted on each second bridge beam 108. When the panel 1 (see Fig. 15) is conveyed in the direction parallel to the X axis, the guide roller 130 rotates idling by friction, and the panel 1 is out of the path parallel to the X axis . The sequential operation of the components provided in the panel inversion unit 100 described above is controlled by the controller 199 (see Fig. 1).

Figs. 14 to 17 are front sectional views sequentially showing the panel inversion method using the panel inversion unit of Figs. 11 and 12, and the panel inversion unit 100 described with reference to Fig. 14 to Fig. Panel inversion method will be sequentially described. The panel inversion method includes a preparation step, a panel input step, a panel pickup step, a panel inversion step, an absorption stop step, a panel separation step, and a panel emission step.

11, 12 and 14, the preparation step may include switching the first and second bridges 103A and 103B to the first posture, and turning the invertor 140 into a plurality of first and second Is raised above the bridge beams 106 and 108 and the plurality of adsorption nozzles 148 of the inverter 140 are directed downward. The transverse beams 146 of the transducer 140 are arranged to extend in a direction parallel to the X axis and are arranged between the plurality of adsorption nozzles 148 and the first and second bridge beams 106, (See Fig. 15) can be interposed.

In the step of inserting the panel, after the preparation step, the panel 1 is inserted in parallel with the direction of positive X-axis from the outside of the first bridge 103A, and is transferred to the lower side of the inverter 140. The panel transfer roller 120 rotates while supporting the panel 1 to transfer the panel 1 and stops moving when the panel 1 is aligned under the inverter 140. [

11, 12, and 15, the panel picking step may include a step of picking up a plurality of suction nozzles 148 after the panel-closing step to contact the upper surface of the panel 1 on which the first coating layer 5 is formed And the panel 1 is picked up by lowering the inverter 140 so that the panel 1 is lowered. At this time, the air compressor (not shown) is operated so that the adsorption nozzle 148 adsorbs the panel 1.

Referring to FIGS. 11, 12, and 16, the panel inversion step may include switching the first and second bridges 103A and 103B to the second posture after the panel pickup step, ≪ / RTI > The first and second bridges 103A and 103B are switched to the second posture so that the panel 1 is out of the path that rotates together with the inverter 140 by 180 degrees. Therefore, the panel 1 is turned upside down without colliding with the first and second bridges 103A and 103B so that one side surface of the panel 1 to be attracted to the suction nozzle 148 becomes the lower surface, This becomes the upper side. And a cover 7 is attached to the other side surface. The panel 1 inverted in this manner is held in contact with the suction nozzle 148 from above the suction nozzle 148.

The step of stopping the adsorption is to stop the operation of the air compressor (not shown) so that the plurality of adsorption nozzles 148 do not adsorb the panel 1 after the panel inversion step. This is because the panel 1 can be supported by the inverter 140 even if the suction nozzle 148 is not operated due to the weight of the panel 1 itself.

Referring to FIGS. 11, 12 and 17, the panel separating step may include switching the first and second bridges 103A and 103B back to the first posture, Is lower than the plurality of first and second bridge beams (106, 108). When the inverting shaft 141 is lowered in parallel to the negative direction of the Z axis, the plurality of counteracting beams 146 are arranged so as not to cross the first and second bridge beams 106 and 108 So that the inverter 140 can be lowered below the first and second bridge beams 106,108. However, the panel 1 does not pass through the first and second bridge beams 106 and 108. The panel 1 is supported in contact with the first and second bridge beams 106 and 108, specifically a plurality of panel feed rollers 120 and the guide rollers 130, and the panel 1 and the suction nozzles 148) are spaced apart.

The panel discharging step is a step of discharging the panel 1 to the outside of the panel reversing unit 100, specifically, the second direction switching conveyor 165 (see FIG. 1) after the panel separating step. A plurality of panel conveying rollers 120 rotate while supporting the panel 1 to convey the panel 1 in parallel with the positive direction of the X axis and discharge it to the outside of the second bridge 103B. The panel 1 discharged to the second direction switching conveyor 165 is covered with the cover 7 on the upper side and the first coating layer 5 is formed on the lower side. After the panel 1 is discharged to the outside of the second bridge 103B, the rotation of the panel feed roller 120 is stopped.

In the case where the panel 1 is continuously supplied, the preparatory step can be performed again to carry out the inversion operation of the next turn panel 1. [ Specifically, in order to return the panel inversion unit 100 to the state shown in Fig. 14, the inverter 140 is raised higher than the plurality of first and second bridge beams 106 and 108, and the first and second The steps of switching the bridges 103A and 103B to the second posture, rotating the inverter 140 by 180 degrees and switching the first and second bridges 103A and 103B to the first posture are sequentially performed .

Fig. 18 is a cross-sectional view of the cover removing unit of Fig. 1, and Fig. 19 is an enlarged view of the ZOOM portion of Fig. 18, showing the cover being peeled off while the panel is being transported. 18 and 19, the cover removing unit 170 includes a cover removing unit base 171, an adhesive tape feeding roller 712 supported on the base 171, a cover collecting roller 184, A tape cutter 178, an adhesive tape attacher 186, a cover separator 190, a panel support roller 193, and a panel ejector 188.

The adhesive tape feed roller 172 is provided at the end of a feed roller lever 173 pivotally connected to a cover removal unit base 171 and is attached to a roll adhesive tape 9 are mounted. The adhesive tape 9 is an adhesive surface on one side 9a coated with an adhesive and the other side 9b is a non-adhesive surface. The pair of guide rollers 175 and 176 are released from the adhesive tape supply roller 172 and guide the adhesive tape 9 to be supplied to the adhesive tape applicator 186. [ The roll-shaped adhesive tape 9 is fed while being in contact with the guide rollers 175 as shown by a dot-dash line.

When the adhesive tape 9 mounted on the adhesive tape supply roller 172 is exhausted, an operator operates the adhesive tape cutter 178 to cut the adhesive tape 9, and while the supply roller lever 173 is turned over, The adhesive tape 9 consumed in the supply roller 172 is replaced with a new adhesive tape 9 and the starting end of the adhesive tape 9 is cut off in the adhesive tape cutter 178 and is pre- Is attached to the end of the tape (9). Thereby, the operation of removing the cover 7 can be performed while continuity of the operation using the panel double-sided coating apparatus 10 is maintained. 18, the combination of the adhesive tape supply roller 172, the supply roller lever 173, the pair of guide rollers 175 and 176, and the adhesive tape cutter 178 A plurality of combinations may be disposed apart from each other along a width direction of the panel 1, that is, a direction parallel to the X axis.

The adhesive tape applicator 186 has a pair of rollers 187a and 187b which are in close contact with each other so as to form a nip. The panel ejector 188 is provided with a pair of rollers 189a and 189b which are in close contact with each other so as to form a nip as in the case of the adhesive tape adherer 186, 186). The cover separator 190 has an edge formed with an acute angle AN and is disposed between the adhesive tape applicator 186 and the panel ejector 188. The panel support roller 193 is disposed under the cover separator 190, in contact with or slightly spaced from the cover separator 190.

The cover collection roller 184 is disposed on the upper side of the cover separator 190 and is rotated by the rotational force of the cover collection roller drive motor 180. The timing belt 182 is supported by the shaft (not shown) of the motor 180 and the cover collection roller 184 and rotates to transmit the rotational force of the motor 180 to the cover collection roller 184. [ A cover guide roller 194 for guiding the adhesive tape 9 and the cover 7 attached thereto to the cover collection roller 184 is disposed between the cover separator 190 and the cover collection roller 184, 195 are brought into close contact with the cover guide roller 194 to form a nip between the cover guide roller 194 and the pressing roller 195. [

The adhesive tape 9 is sandwiched between the pair of rollers 187a and 187b of the adhesive tape adherer 186 and the gap between the cover separator 190 and the panel supporting roller 193 while the adhesive surface 9a faces downward, The edge 191 of the cover guide roller 190 and the cover guide roller 194 and the pressure roller 195 and proceeds along the path toward the cover collection roller 184. [

At this time, the panel 1 with the cover 7 attached to the upper side passes through the second direction switching conveyor 165 (see FIG. 1) and the third conveyor 14 (see FIG. 1) 186, the adhesive tape 9 is attached to the cover 7 in the nip formed between the pair of rollers 187a, 187b of the adhesive tape applying unit 186. [ The adhesive tape 9 and the cover 7 are firmly adhered to each other as they pass between the panel support roller 193 and the lower side of the cover separator 190 as the panel 1 and the adhesive tape 9 continue to advance . The cover 7 is no longer attached to the panel 1 and is attached to the adhesive tape 9 so that the adhesive tape 9 And is wound on a cover collection roller 184 in a roll form to be recovered. The panel 1 from which the cover 7 is peeled passes between the pair of rollers 189a and 189b of the panel ejector 188 and is discharged to the fourth conveyor 15 (see FIG. 1).

Hereinafter, a panel double-side coating method using the panel double-sided coating apparatus 10 will be described with reference to Figs. 1 to 3 again. The panel double-sided coating method includes a cover attaching step, a first coating step, a first curing step, a panel reversing step, a cover removing step, a second coating step, and a second curing step. The step of attaching the cover is a step of protecting the panel 1 by covering a flexible cover 7 on the other side of the panel 1. [ A plurality of panels 1 are stacked and stored before the panel 1 is inserted into the panel double-sided coating apparatus 10. In order to prevent such scratches or scratches due to collision between the panels 1, A cover 7 is attached. It is possible to protect the panels 1 if only a single cover 7 exists between the pair of panels 1 stacked up and down so that the cover 7 is attached only to the other side of the panel 1, The cover 7 is not attached to one side surface.

The panel 1 is put into the loading conveyor 11 so that the other side to which the cover 7 is attached becomes the lower side and proceeds to the first coating unit 20. The first coating step is a step of applying a coating liquid to one side of the panel 1, and the operation proceeds in the first coating unit 20. The first coating step is performed by flowing a coating liquid onto the upper side of the panel 1 using a slot die 40 (see Fig. 4) in which a slot 41 (see Fig. 4) extending in the width direction of the panel 1 is formed And coating. A detailed description of the coating operation using the first coating unit 20 has already been given with reference to FIGS. 4 and 5, and therefore, a duplicate description will be omitted.

The panel 1 discharged from the first coating unit 20 advances to the first curing unit 55 via the first conveyor 12. The first curing step is a step of curing the coating liquid applied to one side of the panel 1 to form the first coating layer 5, and the operation is performed in the first curing unit 55. The first curing step includes a step of curing the coating liquid by irradiating ultraviolet light onto the upper side of the panel 1. A detailed description of the curing operation using the first curing unit 55 has already been given with reference to Fig. 8, and thus a duplicate description will be omitted.

The panel 1 discharged from the first curing unit 55 proceeds to the panel reversing unit 100 via the second conveyor 13 and the first direction switching conveyor 60 in this order. The panel reversing step is a step of reversing the panel 1 so that the upper and lower sides of the panel 1 on which the first coating layer 5 is formed are reversed, and the operation is progressed in the panel reversing unit 100. The detailed description of the operation of reversing the panel using the panel reversing unit 100 has already been described with reference to FIGS. 11 to 17, and thus redundant description will be omitted.

The panel 1 discharged from the panel reversing unit 100 is formed with the first coating layer 5 on the lower side and the second direction switching conveyor 165 and the third And then proceeds to the cover removing unit 170 via the conveyor 14 in order. The cover removing step is a step of peeling the cover 7 from the other side of the panel 1, that is, the upper side, and the operation is carried out in the cover removing unit 170. A detailed description of an operation for peeling the cover 7 from the panel 1 using the cover removing unit 170 has already been given with reference to Figs. 18 and 19, and thus a duplicate description will be omitted.

The panel 1 discharged from the cover removal unit 170 proceeds to the second coating unit 197 via the fourth conveyor 15. The second coating step is a step of applying the coating liquid to the other side of the panel 1 from which the cover 7 has been removed, and the operation proceeds in the second coating unit 197. The second coating step is performed in the same manner as the first coating step by using the slot die 40 (see Fig. 4) in which the slot 41 (see Fig. 4) extending in the width direction of the panel 1 is formed, I.e., the other side, by applying a coating liquid. Since the coating operation using the second coating unit 197 is the same as the first coating operation already mentioned, a duplicate description will be omitted.

The panel 1 discharged from the second coating unit 197 proceeds to the second curing unit 198 via the fifth conveyor 16. The second curing step is a step of curing the coating liquid applied to the other side of the panel 1 to form a second coating layer 6, and the operation is performed in the second curing unit 198. The second curing step includes the step of curing the coating liquid by irradiating ultraviolet light onto the upper side of the panel 1, that is, the other side. Since the curing operation using the second curing unit 198 is the same as the first curing operation already mentioned, a duplicated description will be omitted.

The panel 1 discharged from the second curing unit 198 and formed with the first and second coating layers 5 and 6 on both sides is collected by the operator or pick-up robot on the unloading conveyor 17, Unloading is performed in the panel double-sided coating apparatus 10.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1: Panel 7: Cover
11: Loading conveyor 17: Unloading conveyor
20: first coating unit 40: slot die
55: first curing unit 60: first chamber? Conversion conveyor
100: panel inversion unit 103A, 103B: bridge
140: Reversal 148: Adsorption nozzle
165: second direction switching conveyor 170: cover removing unit
197: Second coating unit 198: Second curing unit

Claims (15)

A first coating unit for applying a coating agent to one side of the flat panel;
A first curing unit for curing the coating liquid applied to one side of the panel to form a first coating layer;
A panel reversing unit for reversing the panel such that upper and lower sides of the panel on which the first coating layer is formed are reversed;
A second coating unit for applying a coating liquid to the other side of the inverted panel;
A second curing unit for curing the coating liquid applied to the other side of the panel to form a second coating layer; And
And a panel transfer unit for transferring the panel so that the panel sequentially passes through the first coating unit, the first curing unit, the panel reversing unit, the second coating unit, and the second curing unit Lt; / RTI > The method according to claim 1,
The first coating unit or the second coating unit may include a slot die for applying the coating liquid to an upper side of the panel through a slot extending in the width direction of the panel Features a two-sided panel coating system. 3. The method of claim 2,
Wherein the first coating unit or the second coating unit comprises a table for supporting the panel while the coating liquid is applied to the panel and a panel for transferring the panel so that the panel enters the table and is discharged to the outside from the table, Further comprising conveying means,
The panel transfer means includes a chain rotatably supported by a plurality of sprockets. When the chain is rotated higher than an upper side of the table, the panel is supported by the chain so as to be transferred Wherein said panel is a double-sided coating apparatus. 3. The method of claim 2,
The first coating unit or the second coating unit may include a lip cleaner that wipes a droplet of the coating liquid which is moved in the longitudinal direction of the slot die and is formed at the lower end of the slot die when the slot die does not apply the coating liquid to the panel and a lip cleaner. The method according to claim 1,
Wherein the first curing unit or the second curing unit includes an ultraviolet light irradiator for curing the coating liquid by irradiating an ultraviolet ray onto an upper surface of the panel. The method according to claim 1,
Wherein the first coating unit and the second coating unit are arranged side by side,
Wherein the panel transfer unit comprises at least one direction switching conveyor for switching the proceeding direction of the panel. The method according to claim 6,
Wherein the direction changing conveyor comprises: a plurality of first rollers uniformly dispersed to rotate in contact with a bottom surface of the panel to convey the panel in one direction; And a plurality of first rollers which are uniformly distributed between the plurality of first rollers and rotate in contact with the lower surface of the panel to transport the panel in the other direction crossing the one direction, And a plurality of second rollers having a radius,
The second roller is movable up and down so that when the plurality of first rollers are rotated in a state in which the upper outer circumferential portion of the plurality of second rollers is positioned lower than the upper outer circumferential portion of the plurality of first rollers, And the panel is configured to be moved in the other direction when the plurality of second rollers are rotated while the upper outer circumferential portion of the plurality of second rollers is positioned higher than the upper outer circumferential portion of the plurality of first rollers. Double-sided coating device. The method according to claim 1,
Wherein the panel is inserted into the first coating unit while the other side is covered with a flexible cover,
Wherein the panel double-side coating apparatus further comprises a cover removing unit for peeling the cover from the other side of the panel between the panel reversing unit and the second coating unit. 9. The method of claim 8,
The cover removing unit includes a pair of rollers which are in close contact with each other to form a nip, a panel covered with the cover through the nip, and an adhesive tape for attaching the adhesive tape to the cover by passing the adhesive tape. An attaching machine; A cover separator having an edge formed at an acute angle and separating the cover with the adhesive tape from the panel by pressing the cover to which the adhesive tape is attached with the edge; An adhesive tape feeding roller for feeding the adhesive tape to the adhesive tape attaching device; And a cover collection roller for collecting the cover to which the adhesive tape separated from the panel is attached. 9. The method of claim 8,
The panel transfer unit comprises:
A loading conveyor for advancing the panel in parallel with the positive (+) direction of the Y axis and transferring the panel to the first coating unit;
A first conveyor for advancing the panel discharged from the first coating unit in parallel with the positive direction of the Y axis and transferring the panel to the first curing unit;
A second conveyor for advancing the panel discharged from the first curing unit in parallel with the positive direction of the Y axis;
A first direction switching conveyor interposed between the second conveyor and the panel inversion unit for switching the proceeding direction of the panel in a direction parallel to the positive direction of the X axis and transferring the panel to the panel inversion unit;
A second direction switching conveyor interposed between the panel reversing unit and the third conveyor for switching the advancing direction of the panel discharged from the panel reversing unit to a direction parallel to the Y axis negative direction;
A third conveyor for conveying the panel diverted in parallel to the direction of the Y-axis negative (-) to the cover removing unit;
A fourth conveyor for advancing the panel ejected from the cover removing unit in parallel with the direction of the Y axis negative (-) and transferring the panel to the second coating unit;
A fifth conveyor for advancing the panel discharged from the second coating unit in parallel with the direction of the Y axis negative (-) and transferring the panel to the second curing unit; And
And an unloading conveyor for advancing the panel discharged from the second curing unit in parallel with the negative direction of the Y axis and discharging the panel to the outside. The method according to claim 1,
The panel reversing unit may include a reversing unit for picking up the panel and rotating the panel by 180 DEG about a horizontal axis of rotation such that the upper and lower sides of the panel are inverted; And a panel conveyor for conveying the panel to a position picked up by the reverser and for transferring the panel inverted by the reverser to the outside,
The panel conveyor has a pair of bridges for supporting the panel together at a position where the panel is picked up,
Wherein the pair of bridges are configured to be switchable between a first posture that is mutually connected to support the panel horizontally and a second posture that is inclined so that the panel does not collide with the panel when the panel is picked up and rotated by the reversing device Lt; / RTI > A first coating step of applying a coating agent to one side of the flat panel;
A first curing step of curing the coating liquid applied to one side of the panel to form a first coating layer;
A panel reversing step of reversing the panel such that an upper side and a lower side of the panel on which the first coating layer is formed are reversed;
A second coating step of applying a coating liquid to the other side of the inverted panel; And
And a second curing step of curing the coating liquid applied to the other side of the panel to form a second coating layer. 13. The method of claim 12,
The first coating step or the second coating step may include applying a coating liquid to an upper surface of the panel using a slot die having a slot extending in the width direction of the panel, The method of claim 1, 13. The method of claim 12,
Wherein the first curing step or the second curing step comprises curing the coating liquid by irradiating ultraviolet light onto an upper surface of the panel. 13. The method of claim 12,
A cover attaching step of covering a flexible cover to the other side of the panel to protect the panel, prior to the first coating step; And
Further comprising a cover removing step of peeling the cover from the other side of the panel between the panel inversion step and the second coating step.

Images