KR100731735B1 - Apparatus for tipping-off the exhaust pipe in display panel - Google Patents

Abstract

An apparatus for tipping off an exhaust pipe in a display panel is provided to tip off effectively an exhaust tube by heating locally the exhaust tube. A nozzle part(100) is used for sealing one point of the exhaust tube by heating sequentially a periphery of an exhaust tube(700) by using one or more nozzles. An exhaust tube chucking part(200) is used for chucking a lower end of the exhaust tube to a lower part of the injection nozzle. A centering part(300) is coupled with a lower end of the exhaust tube chucking part. The centering part includes a chuck-up/down unit(310), a nozzle up/down unit(320), and a floating unit(330). A base plate(400) is installed at a lower portion of the centering part and includes a base for floating the centering part and a fixing unit for fixing temporarily the centering part.

Description

Apparatus for tipping-off the exhaust pipe in display panel}

1 is an exploded perspective view of a general display panel.

Figure 2 is an illustration of a tip off device of a conventional display panel exhaust pipe.

3 is a front view of the tip off device of the display panel exhaust pipe according to an embodiment of the present invention.

4 is a plan view of FIG. 3.

FIG. 5 is a detailed view of portion A in FIG. 3.

FIG. 6 is an enlarged front view of the centering part and the device fixing part of FIG. 3.

7 is a plan view of the exhaust pipe chucking portion of FIG. 6.

8 is an enlarged left side view of the cutter unit in FIG. 3.

9 is a photograph showing a perspective view from the opposite direction of FIG.

Explanation of symbols on the main parts of the drawings

30 rail 100 nozzle part

110: injection nozzle 120: inner ring

121: gas supply line 130: outer ring

131: gas supply line 132: gas supply groove

140: bearing 150: motor

200: exhaust pipe chuck 210: chuck

220: chuck cylinder 300: centering unit

310: chuck up down means 320: nozzle up down means

330: floating means 340: worker

350: reference hole 400: base plate

410: fixing means 411: working cylinder

412: work pin 500: reference setting section

510: reference cylinder 520: reference pin

600: cutout 610: cutter

620: basket 630: reciprocating means

640: discharge tube

Korea Patent Office Registered Patent Publication No. 10-0340083

The present invention relates to an apparatus for tip-off an exhaust pipe formed to inject exhaust and discharge gas into a display panel, and more particularly, to inject exhaust and discharge gas into the display panel through an exhaust pipe. A tip off device of a display panel exhaust pipe for forming a short length tip while sealing the exhaust pipe.

In general, a display device refers to an interface device that exchanges information between a human and an electronic device. Such display devices include cathode ray tubes (CRT), liquid crystal displays (LCDs), fluorescent displays (VFD), plasma display panels (PDPs), organic ELs (Electro) Luminescent), FED (Field Emission Display), and electronic paper. A display panel is used for such a display device.

1 is an exploded perspective view of a general display panel.

As shown in the drawing, the display panel is coupled in parallel with a front substrate 1, which is a display surface on which an image is displayed, and a rear substrate 2, which forms a rear surface, with a predetermined distance therebetween.

The front substrate 1 is a discharge sustaining electrode for maintaining light emission of a cell by mutual discharge in one pixel, and a pair of common electrodes Common and C and a scan electrode Scan and S are provided. A dielectric layer 5 is formed to limit the discharge current of the two electrodes and to insulate the electrode pairs, and a protective layer 6 is formed on an upper surface thereof.

The rear substrate 2 has an address discharge at a portion of the barrier rib 3 forming a plurality of discharge spaces, that is, a cell, and parallel to the barrier rib 3 and intersecting the scan electrode S. A plurality of address electrodes A and A which generate vacuum ultraviolet rays, and are formed on both side partition walls 3 and the rear substrate 2 surface among the inner surfaces of each discharge space to display visible light for image display during address discharge. It consists of an emitting RGB fluorescent layer (4).

An image display operation of an arbitrary cell in the display panel will be described below.

First, when a discharge start voltage is supplied between a pair of scan electrodes S and a common electrode C in a corresponding cell, surface discharge occurs between the two electrodes to form a wall charge on the inner surface of the corresponding discharge space.

When the address discharge voltage is supplied to the scan electrode S and the address electrode A, writing discharge occurs in the cell. When the sustain discharge voltage is supplied to the scan electrode S and the common electrode C, sustain discharge occurs due to the charged particles generated during the address discharge between the address electrode A and the scan electrode S. It is maintained for a certain time.

That is, the electric field is generated inside the cell by the discharge between the electrodes, and the trace electrons in the discharge gas are accelerated, the accelerated electrons and the neutral particles in the gas collide with each other, and are ionized as electrons and ions, Neutral particles are gradually ionized to electrons and ions by other collisions and the like, and the discharge gas becomes a plasma state and vacuum ultraviolet rays are generated.

When the ultraviolet rays generated as described above excite the fluorescent layer 4 to generate visible light, and the generated visible light is emitted to the outside through the front substrate 1, external light emission, that is, image display is recognized. You can do it.

At this time, in order to operate the display panel, the vacuum space is maintained while the discharge gas is filled in the cell space partitioned between the front and rear substrates 1 and 2, that is, partitioned by the partition wall 3. Must be sealed. The prior art for this is shown in FIG.

Figure 2 is an illustration of a tip off device of a conventional display panel exhaust pipe.

This shows the sealing method and sealing device of the display panel exhaust pipe of the Republic of Korea Patent Publication No. 10-0340083, which shows the process of performing a sealing (Tip off) in the state filled with the discharge gas to the display panel to be.

As shown in the drawing, a display panel which closely adheres the rear substrate 2 having the holes 2a to the front substrate 1 on which an image is displayed, and then fills and seals the discharge gas through the exhaust pipe 9 therein. In the exhaust pipe sealing device of the inside, the cylindrical heat insulating material 10 is hollow; A heating wire 22 wound around the heat insulator 10 and in contact with the exhaust pipe 9; And heating means provided with electric wires 23 for supplying and generating electricity to the heating wires 22; The exhaust pipe 9, which is a fixed body, is cut and sealed by electric heat of the heating means in a state where the discharge gas is filled therein.

Referring to the operation of the prior art in detail as follows.

First, in the prior art, the coating step, the fixing step, the bonding step, and the sealing step are performed, and heat-fixing the front and rear substrates 1 and 2 is then performed to perform the sealing step.

Therefore, in the sealing step, when the set time elapses during the bonding step and maintains the pressure of about 400 to 600 Torr, the sealing device 20 is coupled to the upper side of the exhaust pipe 9 protruding to a predetermined height. do.

When the power is supplied through a power coat (not shown) after the sealing device 20 is coupled, the supplied power generates heat to the heating wire 22 through the wire.

Accordingly, the exhaust pipe 9 is gradually melted after being subjected to the heat of the heated heating wire 22 and then used after being tip off by a conventional method.

As described above, the related art heats the exhaust pipe 9 by exhausting the inside of the display panel through the exhaust pipe 9 (removing foreign substances and water), then injecting gas into the display panel, and covering the exhaust pipe 9 by hand with an electrothermal heater. This seals the exhaust pipe. Then, a diamond cutter was used to cut the sealed portion manually.

However, this conventional technology has the following problems.

That is, according to the prior art described above, it is difficult to shorten the cutting length of the exhaust pipe 9 due to the characteristics of the heat transfer heater, and there is a problem that an operator may be injured because the cut portion is sharp after cutting by manual labor.

In addition, since it is difficult to shorten the length of the exhaust pipe after cutting, when only the display panel itself is transported, there is a problem in that the display panel is loaded with a low loading density per unit space, thereby causing a large transportation cost.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, and an object of the present invention is to heat the exhaust pipe locally using a flame using a gas having excellent straightness and high thermal cohesiveness to seal the exhaust pipe (Tip- It is to provide a tip off device of the display panel exhaust pipe that can significantly reduce the remaining exhaust pipe length by off).

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

The tip off device of the display panel exhaust pipe includes: a nozzle unit (100) for sealing one point of the exhaust pipe by simultaneously or sequentially heating the periphery of the exhaust pipe (700) of the display panel using one or more injection nozzles (110); An exhaust pipe chucking unit 200 for chucking a lower end of the exhaust pipe 700 under the injection nozzle 110; A chuck up-down means 310 coupled to a lower end of the exhaust pipe chucking unit 200 and capable of up-down the exhaust pipe chucking unit 200 and a nozzle up-down means 320 up-down of the nozzle unit 100 may be used. And, the centering unit 300 having a floating means 330 on the lower surface to enable flow in accordance with the position change of the exhaust pipe 700; A base plate 400 disposed below the centering part 300 and having a fixing means 410 to temporarily fix the centering part 100 while allowing the centering part 100 to float. It characterized by comprising;

In addition, the nozzle unit 100 may be divided into a fixed type and a rotating type according to whether the injection nozzle 110 is rotated and the exhaust pipe 700 is heated, and any one of them may be selected.

First, in the case of a fixed type (not shown in the drawing), a plurality of injection nozzles are fixedly arranged radially, and a gas supply line for supplying gas to each of the injection nozzles is configured.

And in the case of a rotary type, with reference to Figures 3 and 5, at least one injection nozzle (110); An inner ring 120 into which the injection nozzle 110 is inserted and fixed; An outer ring 130 inscribed with an outer circumferential surface of the inner ring 120; A bearing (140) configured between the inner ring (120) and the outer ring (130); It consists of a motor 150 for rotating the inner ring (120).

Gas supply lines 121 and 131 for supplying gas to the injection nozzle 110 are formed in the inner ring 120 and the outer ring 130, and are annular along the inner surface of the outer ring 130. A gas supply groove 132 is configured, and the gas supply groove 132 preferably constitutes an oil seal for preventing gas leakage.

In addition, by forming a chamber of a predetermined space in a portion of the gas supply line 131 of the inner ring 120, it is preferable to eject the gas from the injection nozzle 110 at a constant pressure.

The exhaust pipe chucking unit 200 is disposed below the injection nozzle 110 and includes a chuck 210 for chucking a lower end of the exhaust pipe 700; It is composed of a chuck cylinder 220 for operating the chuck 210.

Preferably, the chuck 210 is composed of a plurality of divided pieces 211, and the divided pieces 211 are collected by driving the chuck cylinder 220 to chuck the exhaust pipe and Release.

The centering unit 300 is coupled to the lower end of the exhaust pipe chucking unit 200, chuck up and down means 310 for up and down the exhaust pipe chucking unit 200; Nozzle up-down means (320) for up and down the nozzle unit (100); It comprises a; floating means 330 on the lower surface to enable the flow in accordance with the change in the position of the exhaust pipe (700).

The chuck up and down means 310 is preferably located directly below the chuck cylinder 220, the cylinder is composed of elements that can be reciprocated linearly to up and down the exhaust pipe chucking unit (200).

The nozzle up-down means 320 is also composed of an element that can be reciprocated linearly, such as to up and down the nozzle unit 100.

The floating means 330 is configured on the lower surface of the centering unit 300, and is configured to float on the base plate 400 to be described later to move freely, may be composed of various bearings (fluid bearing, ball bearing, etc.) However, a method of arranging and arranging a ball-cast (ball-cast) that can be freely rotated on the lower surface of the centering unit 300 at a plurality of points is most preferable.

The base plate 400 is configured below the centering unit 300 to be in direct contact with the floating means 330 of the centering unit 300, the base (300) that the centering unit 300 can move freely Will be provided.

In addition, the base plate 400 must be provided with a fixing means 410 to be able to temporarily fix the centering portion 300, which constitutes an electromagnet on the base plate 400 or by a hydraulic cylinder It can be implemented as a driven pin member.

First, when the electromagnet is configured, the centering unit 300 may be fixed by forming an electromagnet on the base plate 400 to generate an electromagnetic force if necessary. (Not shown in the drawing)

In addition, in the case of the pin member driven by the hydraulic cylinder, with reference to Figure 6, to provide a work hole 340 in the centering portion 300, and to form a work cylinder 411 on the base plate 400, The work pin 412 is inserted into the work hole 340 and coupled to the work cylinder 411.

The work hole 340 is preferably disposed in a diagonal direction of the centering part 300 (see Fig. 4), and the inner diameter of the work hole 340 is larger than the outer diameter of the work pin 412 to work. It is preferred that the pin 412 be configured to allow flow therein.

The work pin 412 is usually in an elevated state and then lowered by the operation of the work cylinder 411, and the head of the work pin 412 is in close contact with the centering part 300 so that the centering part ( 300 is fixed to the base plate 400.

On the other hand, the configuration similar to the above may further configure the reference setting unit 500 for setting the reference position of the centering unit 300 on the base plate 400, the detailed configuration for this is based on the centering unit 300 Provides a ball 350, constitutes a reference cylinder 510 in the base plate 400, is composed of a reference pin 520 inserted into the reference hole 350 is coupled to the reference cylinder 510. .

Here, the inner diameter of the reference pin 520 is of a constant size, but is configured to increase in the head direction over a predetermined height (that is, by configuring the cross section of the reference pin to be inclined over a predetermined height) of the reference pin 520 It is possible to return the centering portion 300 moved back to the reference position only by descending.

In addition, the cutout 600 may be separately configured as a part for more easily separating the remaining part of the sealed exhaust pipe 700 in addition to the above configuration.

The cutting unit 600 includes a cutter 610 for cutting the remaining portion of the sealed exhaust pipe 700; A basket 620 installed under the cutter 610; The cutter 610 and the basket 620 is composed of a reciprocating means 630 such as a cylinder so as to enter and exit the position from the reference position to the exhaust pipe 700 position.

Hereinafter, look at the operation of the embodiment of the present invention configured as described above in detail.

When the display panel arrives at a certain point in the manufacturing line with the exhaust pipe facing downward, the display panel is brought to the correct position by using a guide or the like on the manufacturing line for precise work.

And the tip off device of the display panel exhaust pipe of the present invention below the display panel may be fixed to the working position or moved to the position for performing work through the rail (30).

Next, the nozzle chuck 100 and the exhaust pipe chuck 200 are raised by operating the chuck up-down means 310 and the nozzle up-down means 320 of the centering part 300.

The chuck cylinder 220 is operated to collect a plurality of split pieces 211 to chuck the exhaust pipe 700 of the display panel.

Particular attention here is that when the chuck cylinder 220 is operated, the centering part 300 should be able to move freely on the base plate 400, that is, be floating.

This is because the position of the exhaust pipe 700 formed in the display panel has a slight error, and it is necessary to redo the centering required for the operation according to the position of each other exhaust pipe 700.

Looking at the case of one embodiment of the present invention, the centering unit 300 by floating (unlocking) the reference pin 520 that was locked (locked) when chucking the exhaust pipe 700 to the floating means 330, such as ball cast By this, the base plate 400 can be freely moved. (At this time, the work pin is in an unlocked state.)

And while chucking the exhaust pipe 700 to accurately correct the position of the centering unit 300 according to the position of the exhaust pipe 700, by lowering the work pin 412 in the next raised state by fixing the centering unit 300 Centering is required for the work.

For reference, in the exemplary embodiment of the present invention, the reference pin 520 and the work pin 412 are driven by the reference cylinder 510 and the work cylinder 411, respectively, but may be implemented by a combination of an electromagnet and a spring. There will be.

In addition, the centering may be performed by configuring only the electromagnet on the base plate without using the pin member (reference pin, work pin) as a fixing means.

After performing the centering necessary for the work through the process as described above is sealed by heating the circumference of the exhaust pipe 700 with a flame formed by injecting gas through the injection nozzle (110).

At this time, if the chuck 210 chucking the lower end of the exhaust pipe 700 is gradually lowered, the exhaust pipe 700 is gradually thinned and separated.

The remaining portion of the separated exhaust pipe 700 is dropped into the inner space of the chuck 210, it can be easily discharged to the outside by forming a discharge port (not shown) with a tube or the like directly below.

On the other hand, in the method of arranging the injection nozzles 110, it is possible to select and use between the fixed type and the rotary type, in the case of the fixed type, a plurality of injection nozzles are radially arranged to inject gas at the same time to seal the exhaust pipe 700. can do.

Looking at the case of the rotary type, by driving the motor 150 of the nozzle unit 100 to rotate the inner ring 120, whereby one or more injection nozzles 110 installed on the inner ring rotates around the exhaust pipe 700 Sealed by successive heating in sequence.

Meanwhile, in separating the remaining portion of the sealed exhaust pipe 700, a separate cut portion 600 in addition to the method of separating the remaining portion of the exhaust pipe 700 while gradually lowering the chuck 210 chucking the lower end of the exhaust pipe 700. ) May be further configured to separate more easily.

Looking at this in detail, when the exhaust pipe 700 is sealed by the injection nozzle 110 through the reciprocating means 630 such as a cylinder to enter the cutter 610 and the basket 620 to the position directly below the exhaust pipe 700 and Then, when the remaining portion of the exhaust pipe 700 sealed with the cutter 610 is cut and dropped to the basket 620, the discharge port 640 can be separately provided outside the chuck to be discharged to the outside.

After the above-described series of operations are performed, the nozzle unit 100 and the chucking unit 200 are lowered by operating the chuck up-down unit 310 and the nozzle up-down unit 320 of the centering unit 300, respectively.

And the working pin 412 of the base plate 400 is raised (unlocked), the reference pin 520 is lowered (locked) to return the centering unit 300 to the reference position again, the next display panel The transfer will repeat the above operations.

Although the present invention has been described above by being limited to preferred embodiments, the present invention is not limited thereto, and various changes, modifications, and equivalents may be used, and sealing of fluorescent lamps (EEFL, CCFL, etc.) similar in shape to the display panel exhaust pipe may be used. It can also be used as a means.

Therefore, the present invention can be applied by appropriately modifying the above embodiments, it will be obvious that such application also belongs to the scope of the present invention based on the technical idea described in the claims below.

As a result, the present invention is capable of effectively sealing the exhaust pipe by locally heating the exhaust pipe through gas injection having excellent straightness and high thermal cohesion.

In addition, by using a small injection nozzle it is possible to significantly reduce the length of the exhaust pipe can increase the number of display panels that can be loaded in the same space, there is an advantage that can reduce the expenses such as transportation costs.

Claims (9)

A nozzle unit (100) for sealing one point of the exhaust pipe (700) by simultaneously or sequentially heating the periphery of the exhaust pipe (700) of the display panel using one or more injection nozzles (110); An exhaust pipe chucking unit 200 for chucking a lower end of the exhaust pipe under the injection nozzle 110; A chuck up-down means 310 coupled to a lower end of the exhaust pipe chucking unit 200 and capable of up-down the exhaust pipe chucking unit 200 and a nozzle up-down means 320 up-down of the nozzle unit 100 may be used. And a centering part 300 having a floating means 330 on a lower surface thereof so as to flow in accordance with a change in position of the exhaust pipe 700; A base plate disposed under the centering unit 300 and provided with a base on which the centering unit 300 can be floated, and having a fixing means 410 to temporarily fix the centering unit 300. Tip off device of the display panel exhaust pipe, characterized in that configured to include. The method of claim 1, wherein the nozzle unit 100 , The gas supply line is configured to radially arrange a plurality of injection nozzles and to supply gas to each injection nozzle, Tip off device of the display panel exhaust pipe, characterized in that for heating and sealing the circumference of the exhaust pipe 700 of the display panel at the same time. The method of claim 1, wherein the nozzle unit 100, One or more injection nozzles 110; An inner ring 120 into which the injection nozzle 110 is inserted and fixed; An outer ring 130 inscribed with an outer circumferential surface of the inner ring 120; A bearing (140) configured between the inner ring (120) and the outer ring (130); Consists of a motor 150 for rotating the inner ring 120, The inner ring 120 and the outer ring 130 are provided with gas supply lines 121 and 131 for supplying gas to the injection nozzle 110, and have an annular shape along the inner surface of the outer ring 130. Gas supply groove 132 is configured, the gas supply groove 132, the tip off device of the display panel exhaust pipe, characterized in that an oil seal for preventing gas leakage is configured. The gas supply line in the inner ring 120, Tip chamber of the display panel exhaust pipe, characterized in that provided with a chamber of a predetermined space configured to eject the gas from the injection nozzle at a constant pressure. The method according to claim 1, The exhaust pipe chucking unit 200, A chuck (210) for chucking a lower end of the exhaust pipe (700) under the injection nozzle (110); Consists of a chuck cylinder 220 for driving the chuck 210, The chuck 210 is a tip off device of the display panel exhaust pipe, characterized in that composed of a plurality of divided pieces (211). The method of claim 1, wherein the floating means 330, Tip off device of the display panel exhaust pipe, characterized in that consisting of the ball cast. The method of claim 1, wherein the fixing means 410, The work pin 340 is provided in the centering part 300, the work cylinder 411 is formed in the base plate 400, and the work pin is inserted into the work hole 340 and coupled to the work cylinder 411. 412, characterized in that the tip off device of the display panel exhaust pipe. The tip off device according to any one of claims 1 to 7, wherein the tip off device of the display panel exhaust pipe is In order to set the reference position of the centering unit 300 on the base plate 400, the reference hole 350 is provided in the centering unit 300, and the reference cylinder 510 is configured in the base plate 400. And, the tip off device of the display panel exhaust pipe, characterized in that further comprises a reference set part 500 is inserted into the reference hole 350 is composed of a reference pin 520 coupled to the reference cylinder 510. . The tip off device of the display panel exhaust pipe, A cutter 610 for cutting the remainder of the sealed exhaust pipe 700; A basket 620 installed under the cutter 610; And a cutting part 600 having a reciprocating means 630, which allows the cutter 610 and the basket 620 to enter and exit the reference position from the reference position to the exhaust pipe 700 position. Tip off device of the display panel exhaust pipe.

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