JP4048464B2 - Method and apparatus for loading / unloading glass substrate to / from sealant curing surface plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the liquid crystal display assembling process, the glass substrate temporarily fixed by the laminating apparatus is loaded and placed on a seal material curing surface plate, and after the seal material curing treatment is completed, the glass substrate is sealed. -It is related with the method and apparatus which carry out from a steel material hardening surface plate.
[0002]
[Prior art]
Conventionally, in a liquid crystal display assembly process, a glass substrate temporarily fixed by a laminating apparatus is sent to a seal material curing process, and when a gap between two glass substrates has a predetermined gap parallelism, the glass substrate is fixed. -A curing process for curing the glue material is performed. There are two methods of curing the seal material: a thermosetting method and an ultraviolet irradiation curing method. In the thermosetting method, a heating surface plate in which a heater is embedded is used, and in the ultraviolet irradiation curing method, A quartz surface plate that transmits ultraviolet rays is used.
Also, as a method of placing a glass substrate on each surface plate and taking out the glass substrate from the surface plate after the seal material is cured, generally the glass substrate is adsorbed from a number of suction pads and lifted up. The upper surface suction transfer method, which is placed on the surface plate or taken out from the surface plate, and the glass substrate is lifted from the lower surface by the transfer arm and transferred to the lift pins that have passed through the surface plate, and the lift pins are lowered and fixed. There are two methods, a lift pin method in which a glass substrate is placed on a plate or taken out from a surface plate.
[0003]
[Problems to be solved by the invention]
However, in the above-described upper surface suction transfer method, the temporary fixing of the two glass substrates is peeled off by the mass of the glass substrate itself during the transfer, and the size of the glass substrate that can be processed (transferred) is limited. In order to solve this problem, the adhesive strength can be increased by increasing the amount of sealant applied or increasing the number of places to be applied. Even if it does not soften, it becomes a support rod between the glass substrates, and this part has a gap wider than other parts by about 10 μm, which adversely affects the parallelism of the gap. For this reason, it is not desirable to increase the number of seal materials for temporary fixing in order to perform suction conveyance of the glass substrate.
Furthermore, the lift pin method described above makes a hole for lifting the lift pin on the surface plate, but when pressurizing the glass substrate, only the portion of the hole is not pressurized and the gap at this portion becomes wider, which adversely affects the parallelism of the gap. Effect. For this reason, it is not desirable to make holes for lifting and lowering the lift pins on the surface plate.
[0004]
The present invention has been made in view of the above-described problems, and minimizes the amount of application of the sealing material for temporary fixing of the glass substrate and performs drilling in the sealing material curing surface plate. The glass substrate that has been temporarily fixed without being carried in and placed on the seal material curing surface plate and can be unloaded from the seal material curing surface plate after the curing treatment. It is an object of the present invention to provide a loading / unloading method and apparatus for a board.
[0005]
[Means for Solving the Problems]
Sheet of glass substrate in the present invention in order to achieve the above object - carrying out the method of the sealing material curing platen, the glass substrates bonded by the temporary fastening sealing material and curing the sealant, for curing A method of carrying on a seal material curing surface plate for curing a sealing material , carrying out a seal material curing process, and then unloading the glass substrate on the seal material curing surface plate. In this case, gas is blown between the glass substrate and the seal material curing surface plate to form a gas film, and the glass substrate is lifted from the seal material curing surface plate by the upper glass substrate adsorption. When carrying out the roller feeding and carrying out the seal material cured glass substrate, the upper surface of one end of the glass substrate is lifted up by suction, and a gap is formed between the glass substrate and the seal material curing surface plate. Air that is ionized positively and negatively in the gap By blowing in and forming a gas film, the entire surface of the glass substrate is lifted to neutralize the charges charged on the surface of the glass substrate and the seal material curing surface plate with ions of opposite polarity, and perform static elimination. The roller pull-in conveyance is performed.
[0006]
The glass substrate of the present invention sheet - unloading device to sealing material curing platen, a plurality of b for conveying the glass substrate - La and該Ro - moving frame of portal structures across La - more to transport the arm of Russia - the sealing material cured plate - uniaxially multiple b is provided a guide between La - - forward and reverse rotation b La structure - the conveying end outside the Rakonbeya temporary bonding glass substrate sheet both Russia with arranging the La Placed slightly lower than the transport surface of the forward / reverse rotating roller conveyor, and attached a plurality of suction pads in front of the moving frame close to the seal material curing surface plate so that it can be raised and lowered, In addition, a static elimination air nozzle is attached to the lower end face of the glass substrate sucked by the suction pad so as to be inclined downward, and a pusher for moving the moving frame is arranged below the entrance / exit of the forward / reverse rotating roller conveyor. Forward and reverse rotation roller A stopper for stopping the glass substrate is arranged below the seal material curing surface plate of the seal member, and the seal material curing surface is positioned between the forward / reverse rotating roller conveyor and the seal material curing surface plate. A gas spray nozzle is attached to the lower surface of the glass substrate on the board, and the nozzles are further spaced above both outer sides in the direction intersecting the glass substrate movement direction in the seal material curing surface plate. It is characterized in that it is disposed at a distance and can be moved oppositely.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The apparatus is a combination of a forward / reverse rotating roller conveyor A, a seal material curing surface plate B for curing a curing sealing material, and a moving frame C. The configuration is as follows. A number of rotary shafts 2 and 2 are rotatably supported at intervals between the conveyor frames 1 and 1, and the rotary shafts 2 and 2 are forward and reverse via pulleys 3 and 3 and a timing belt 4. The rotary motor 5 is connected.
[0008]
Further, a plurality of rollers 6 and 6 for conveying the glass substrate P and preventing bending are attached to the rotary shafts 2 and 2 at a pitch of 100 to 150 mm according to the size of the glass substrate. Guides 7 and 7 for preventing lateral displacement of the glass substrate P are attached to the outside of the glass 6, and rollers 6A and 6A for transporting the moving frame C are arranged on the left and right sides of the guides 7 and 7. Individually, guides 7A and 7A for preventing the lateral displacement of the moving frame C are attached to the outside thereof.
[0009]
The moving frame C has a gate-like structure as a whole (see FIG. 3), the left and right legs 8 and 8 are fixed on the transfer plates 9 and 9, and the transfer plates 9 and 9 are connected to the lower plate. La 6A, 6A. Cylinders 11 through a plurality of mounting frames 10 and 10 that protrude in the direction of the seal material curing surface plate B and are attached to the ceiling of the moving frame C at appropriate intervals on the left and right. 11 is attached facing downward, and suction pads 13 and 13 are attached to the lower ends of the cylinders 11 and 11 with attachment plates 12 and 12 facing downward. As shown in FIG. 5, the suction pads 13 and 13 pass through the inner diameters of the holders 13A and 13A fixed to the cylinders 11 and 11 through the mounting plates 12 and 12, and are not fixed to the holder 13A. Move up and down. Further, the suction pads 13 and 13 are communicated with a vacuum generator 14.
[0010]
Further, at the position behind the central suction pad 13 (moving frame C main body side), a static elimination air nozzle 15 having a static elimination mechanism that ionizes the passing air positively and negatively by an ionizer conveys the nozzle tip to the glass substrate. It is inclined 30-60 degrees below the surface. The static elimination air nozzle 15 communicates with the compressed air generator 16 so as to blow a compressed air of 0.3 to 0.8 MPa (preferably 0.5 MPa).
[0011]
Further, a pusher 17 that lifts the moving frame C from the forward / reverse rotating roller conveyor A is provided below the moving frame C in the forward / reverse rotating roller conveyor A, and the forward / reverse rotating roller conveyor A -A stopper 18 for stopping the movement of the glass substrate P is disposed below the position where the glass substrate hardening plate B is located so as to be movable up and down.
Further, a seal material curing surface plate B is disposed outside the terminal end of the forward / reverse rotating roller conveyor A with its upper surface being lowered by 2-3 mm from the conveying surface of the forward / reverse rotating roller conveyor A.
[0012]
Further, as shown in FIG. 4, horizontal cylinders 19 and 19 are provided on the upper left and right outer sides of the seal material hardening surface plate B so as to face each other through frames 20 and 20, respectively. Manifolds 21 and 21 are attached to the tip of 19 piston rods. A plurality of L-shaped nozzles 22, 22 are communicated with each other at a predetermined interval at the lower part of each manifold 21, 21, and the horizontal portion thereof extends from the upper surface of the seal material hardening surface plate B. A gap of about 0.5 mm is provided.
The nozzles 22 and 22 are inserted about 10 mm inward from the end surface of the glass substrate P by the extending operation of the horizontal cylinders 19 and 19 and are detached from the end surface of the glass substrate P by the contracting operation. The manifolds 21 and 21 are connected to the compressed air generator 16 so that a compressed air of 0.3 to 0.8 MPa (preferably 0.5 MPa) is blown out from the nozzles 22 and 22.
[0013]
Further, a gas blowing nozzle 23 inclined upward by 30 to 60 degrees toward the upper surface end of the seal material curing surface plate B is provided at the center of the terminal end of the forward / reverse rotating roller conveyor A. The spray nozzle 23 communicates with the compressed air generator 16 and sprays a compressed air of 0.3 to 0.8 MPa (preferably 0.5 MPa). The static elimination air nozzle 15 and the gas blowing nozzle 23 are arranged such that blowout ports having an inner diameter of about 1 mm are arranged in series at a pitch of about 1.5 mm and about 50 to 100 mm in parallel with the glass substrate P, or are about 1 mm in width and long. It is desirable to arrange an outlet of about 50 to 100 mm in parallel with the glass substrate P.
[0014]
The operation of the apparatus configured as described above will be described. The moving frame C is rotated in the forward / reverse direction in a state where the glass substrate P which is temporarily fixed to the forward / reverse rotating roller conveyor A by the temporary fixing sealing material and is coated with the curing sealing material is not put thereon. After positioning at a predetermined position (left end position) of the roller conveyor A and the push-up machine 17 is lifted to lift the moving frame C, the stopper 18 is lifted. Next, the two temporarily fixed glass substrates P are transferred from a laminating apparatus (not shown) to the center of the left end of the forward / reverse rotating roller conveyor A, and after the glass substrate P hits the stopper 18, the pusher 17 is lowered. The moving frame C is placed on the forward / reverse rotating roller conveyor A, and the stopper 18 is lowered.
[0015]
Next, the suction pads 13 and 13 attached to the moving frame C are moved from the end of the side opposite to the loading direction of the glass substrate P to the seal material curing surface plate B (left side in FIGS. 1 and 2). The cylinders 11 and 11 are moved down to a position of about 10 to 20 mm to bring the suction pads 13 and 13 into close contact with the glass substrate P, and the vacuum generator 14 is operated to perform vacuum suction. Adsorb P. At this time, the suction pads 13 and 13 are attached to the cylinders 11 and 11 so that the downward pressing force of the cylinders 11 and 11 is not applied to the glass substrate P via the suction pads 13 and 13. Slides by an extra stroke along with the piping shafts 13B and 13B that penetrate the inner diameters of the holders 13A and 13A fixed through the plates 12 and 12 and are not fixed to the holders 13A and 13A (see FIG. 5). . For this reason, since the self-weight (tens of grams) of the suction pads 13 and 13 only acts on the glass substrate P, no extraneous force acts on the glass substrate P, thereby preventing mutual displacement of the glass substrates P.
[0016]
In this state, the forward / reverse rotation motor 5 rotates forward to rotate the rotary shafts 2 and 2 forward, and the glass substrate P and the moving frame C are transferred. Since the glass substrate P and the moving frame C are sent by the rollers 6 and 6A having the same diameter, both moving speeds are the same, and the suction pads 13 and 13 drag the upper glass substrate in the horizontal direction. Prevents the glass substrate P from being displaced from each other.
Thus, as the glass substrate P is conveyed, the glass substrate P moves out of the forward / reverse rotating roller conveyor A and moves onto the seal material curing surface plate B.
[0017]
At this time, 0.3 to 0.8 MPa through a gas blowing nozzle 23 into a gap of 2 to 3 mm provided between the lower surface of the glass substrate P (the conveying surface of the roller 6) and the upper surface of the seal material curing surface plate B. The compressed air is sprayed to form a gas film between the glass substrate P and the seal material curing platen B, and the glass substrate P is lifted from the seal material curing platen B by about 3 mm.
Further, in the gap of about 3 mm, the nozzles 22 and 22 are advanced by the operation of the horizontal cylinders 19 and 19 to insert about 10 mm from the end face of the glass substrate P, and a compressed air of 0.3 to 0.8 MPa is sprayed.
[0018]
When the glass substrate P is completely removed from the forward / reverse rotating roller conveyor A and moves above the seal material curing platen B, the spraying air from the gas spraying nozzle 23 stops working, but the spraying air from the nozzles 22 and 22 is used. Is maintained in a raised state. On the other hand, the shift of the glass substrate P in the direction of travel left and right regulated by the guides 7 and 7 is regulated by the moving frame C via the suction pads 13 and 13 sucked on the upper surface of the glass substrate P.
[0019]
Further, when the glass substrate P reaches a predetermined position where the glass substrate P is placed on the seal material curing surface plate B, the operation of the forward / reverse rotation motor 5 is stopped, and the movement of the moving frame C is stopped. Next, the supply of the compression air to the nozzles 22 and 22 is stopped, and at the same time, the horizontal cylinders 19 and 19 are reversely operated to pull out the nozzles 22 and 22 from the lower part of the glass substrate P, and then the suction by the vacuum generator 14 is stopped. Then, the cylinders 11 and 11 are raised and the suction pads 13 and 13 are separated from the glass substrate P. Then, the forward / reverse rotation motor 5 is reversely rotated and the moving frame C is moved. 13 is retracted from the seal material curing surface plate B. As a result, the glass substrate P is placed at a predetermined position on the seal material curing surface plate B.
[0020]
Next, when the glass substrate P on the seal material curing surface plate B finishes the seal material curing process, the forward / reverse rotation motor 5 is rotated forward to move the moving frame C to the glass substrate P. The glass substrate P is sucked by the suction pads 13 and 13 after being moved to the stop position when placed on the seal material curing surface plate B. Next, the cylinders 11 and 11 are lifted to raise the glass substrate P by several mm (preferably 2 mm) through the suction pads 13 and 13 and lift one end of the glass substrate P. A compressed air of 0.3 to 0.8 MPa is sprayed from the nozzle 15 to form a gas film, and the entire surface of the glass substrate P is lifted.
[0021]
At this time, the compressed air passing from the compressed air generator 16 through the static elimination air nozzle 15 is positively and negatively ionized by the ionizer, and the charged charges are applied to the lower surface of the glass substrate P and the upper surface of the seal material curing surface plate B. Neutralize with ions of reverse polarity to remove static electricity.
Next, the nozzles 22 and 22 are moved forward by the extension operation of the horizontal cylinders 19 and 19 into the gap formed between the glass substrate P and the seal material curing platen B, and the pressure is 0.3 to 0.8 MPa. Spray with compression air.
In this state, the forward / reverse rotation motor 5 is reversely rotated to move the moving frame C in a direction away from the seal material hardening surface plate B. As a result, the floating glass substrate P is guided to the moving frame C via the suction pads 13 and 13 and moves toward the forward / reverse rotating roller conveyor A.
[0022]
When the glass substrate starts to move, the air supply from the static elimination air nozzle 15 is switched to the air supply from the gas blowing nozzle 23. As the moving frame C moves, the glass substrate P moves from the seal material curing surface plate B onto the forward / reverse rotating roller conveyor A. At this time, the glass substrate P is always lifted by the gas blowing nozzle 23 and the air blown from the nozzles 22, 22, and the roller 6 of the forward / reverse rotating roller conveyor A without contact with the seal material curing surface plate B, Change to 6.
[0023]
The moving frame C and the glass substrate P move on the forward / reverse rotating roller conveyor A, and when the moving frame C is positioned above the pusher 17, the operation of the forward / reverse rotating motor 5 is stopped. The Thereafter, the suction action of the suction pads 13 and 13 is released, the cylinders 11 and 11 are lifted and the suction pads 13 and 13 are separated from the glass substrate P, and then the pusher 17 is lifted and the moving frame C is moved. Is raised from the forward / reverse rotating roller conveyor A.
Next, the forward / reverse rotation motor 5 is operated again in reverse rotation, and only the glass substrate P is moved by the forward / reverse rotation roller conveyor A and carried out to the next step.
[0024]
In the embodiment of the present invention, air is shown as the gas blown from the nozzles 22 and 22 and the gas blowing nozzle 23. However, a gas such as nitrogen gas may be used, and a gas such as nitrogen gas is used. In this case, a gas supply source can be provided separately from the compressed air generator 16.
[0025]
【The invention's effect】
As is apparent from the above description, the present invention, when a glass substrate is carried in, forms a gas film by blowing a gas between the glass substrate and the seal material curing surface plate to form the glass substrate. In the state of being lifted from the seal material curing surface plate, the upper glass substrate is sucked into the roller and conveyed, and when the seal material cured glass substrate is unloaded, the upper surface of one end of the glass substrate is lifted by suction. Then, after providing a gap between the glass substrate and the seal material curing surface plate, blowing a positively and negatively ionized air into the gap to form a gas film to lift the entire surface of the glass substrate and Since the charge charged on the surface of the sealing material platen is neutralized with ions of opposite polarity and neutralized, and the roller is drawn and transported by adsorption of the upper glass substrate, the mutual contact between the two glass substrates The gap disappears Both extra external force to the glass substrate is not applied, tacking sheet - also enables the mounting transfer glass substrates of large size can be minimized coating amount of sealing material.
Further, it is not necessary to provide any processing holes in the seal material curing surface plate, and the gap parallelism is not affected at all. Further, there are various effects such as removal of the peeling charge of the glass substrate by ionizing the spraying air at the time of carrying out from the seal material curing surface plate.
[Brief description of the drawings]
FIG. 1 is a plan view showing an entire apparatus for carrying out the present invention.
FIG. 2 is a view taken along arrow XX in FIG.
FIG. 3 is a view on arrow YY in FIG. 1;
4 is a view taken along the line ZZ in FIG. 1. FIG.
FIG. 5 is an operation explanatory diagram of the suction pad slide mechanism,
(A) shows a state where the suction pad does not suck the glass substrate.
(B) shows a state in which the suction pad is sucking the glass substrate.
[Explanation of symbols]
A Forward / Reverse Rotating Roller Conveyor B Seal Material Curing Plate C Moving Frame P Glass Substrate 6 6A Roller 7 7A Guide 13 Suction Pad 15 Electric Discharge Air Nozzle 17 Pusher 18 Stopper 22 Nozzle 23 Gas Blowing nozzle

Claims (4)

The glass substrate bonded with the temporary fixing sealing material and the curing sealing material is loaded onto a seal material curing surface plate for curing the curing sealing material, and after the seal material curing treatment, A method of carrying out a glass substrate on a seal material curing surface plate, wherein a gas film is formed by blowing a gas between the glass substrate and the seal material curing surface plate when the glass substrate is loaded. When the glass substrate is lifted from the seal material curing surface plate, the roller substrate is conveyed by suction on the upper glass substrate, and one end of the glass substrate is taken out when the seal material cured glass substrate is unloaded. The upper surface is lifted by suction and a gap is provided between the glass substrate and the seal material curing surface plate. After that, positively and negatively ionized air is blown into the gap to form a gas film to lift the entire surface of the glass substrate. Glass substrate and The glass substrate seal plate is characterized by neutralizing the charge charged on the surface of the seal plate with ions of the opposite polarity and removing the charge, and then transporting the roller by attracting the upper glass substrate. How to carry in and out. A plurality of b for conveying the glass substrate - La (6) and該Ro - La portal structure across the (6) moving frame - a plurality of B for transporting the beam C - both Russia with arranging the La (6A) -Seal of the temporary fixing glass substrate (P) on the outer side of the conveying end of the forward / reverse rotating roller conveyor (A) having a uniaxial multi-roller configuration in which a guide (7) is provided between the rollers (6) and (6A). The material curing surface plate (B) is arranged slightly lower than the conveying surface of the forward / reverse rotating roller conveyor (A) , and the moving frame (C) is closer to the seal material curing surface plate (B). A plurality of suction pads (13) are attached to the front so that the suction pads (13) can be moved up and down, and the neutralizing air nozzle (15) is directed to the lower end surface of the glass substrate (P) sucked by the suction pads (13). mounting is lowered inclined, the forward and reverse rotation b - the move to transfer port toward lower Rakonbeya (a) Les - sheet of Rakonbeya (A) - - downward toward sealing material cured plate (B), the stopper of the glass substrate (P) for stopping forward and reverse rotation B with pushed up arm (C) machine (17) disposed (18) is disposed, and the glass substrate (P ) on the seal material curing surface plate (B) is positioned between the forward / reverse rotating roller conveyor (A) and the seal material curing surface plate (B). A gas spray nozzle (23) is attached to the bottom surface of the seal material curing surface plate (B) , and further above both side positions in the direction intersecting the moving direction of the glass substrate (P) on the seal material curing surface plate (B) . An apparatus for carrying in and out a glass substrate to a seal material curing surface plate, wherein a plurality of nozzles (22) are arranged at an interval and can be moved opposite to each other. The nozzle angle of the air nozzle for discharging (15) and the gas blowing nozzle (23) is set to 30 to 60 degrees with respect to the conveying surface of the horizontal glass substrate (P). Equipment for loading and unloading glass substrates into and from the seal material curing surface plate. The height of the upper surface of the seal material curing surface plate (B) is set to be 2 to 3 mm lower than the height of the conveying surface of the forward / reverse rotating roller conveyor (A). An apparatus for carrying in and out the glass substrate according to claim 1 to a seal material curing surface plate.

Images