KR20000066613A - System for cleaning/transferring a LCD cell - Google Patents

Abstract

PURPOSE: A cleaning and feeding system of liquid crystal cell is provided to completely remove particles attached on the center and edges of the cell and automatically discriminate the failure and ID of the cell. CONSTITUTION: A cleaning and feeding system of liquid crystal cell comprises a conveyer(10), a carrying unit(20), a camera unit(30), a cleaning unit(40) and a fork unit(60). The cells are entered into the entrance of the conveyer(10) and stored in the outlet of the conveyer. The carrying unit(20) is disposed in the entrance site of the conveyer to seat the cells on the conveyer. The camera unit(30) photographs the inherent number of the cells seated on the conveyer to transfer the images to a controller. The cleaning unit(40) removes particles on the cell carried by the conveyer. The fork unit(60) stores the cleaned cells into a cassette.

Description

System for cleaning / transferring a LCD cell}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal cell cleaning and conveying system. More particularly, the present invention relates to a liquid crystal cell cleaning and transporting system. The present invention relates to a system for transporting and storing a liquid crystal cell in a cassette after confirming whether the cell is unpaid or not.

In general, a liquid crystal display device for changing a phase of a liquid crystal to display desired letters, letters, or numbers includes a liquid crystal cell having a structure in which a liquid crystal is enclosed between two glass substrates, and a backlight unit for irradiating light with the liquid crystal cell. do.

The liquid crystal cell is provided with an alignment film for determining the initial arrangement state of the liquid crystal molecules on the inner surface of each of the lower glass substrate and the upper glass substrate on which the pixel electrode is formed, and an adhesive is printed on one of the two glass substrates. The glass substrate is coated on one glass substrate, and the two glass substrates are overlapped in the sealing process and placed in a drying oven of the pressing apparatus, followed by thermocompression. The polarizing plate is attached to each of the upper surface of the upper glass substrate and the lower surface of the lower glass substrate so that light is incident only in a predetermined direction.

When the assembly of the liquid crystal cell is completed as described above, the liquid crystal cell is cut along the previously formed scribing line. By the way, chip | tip and microparticles | fine-particles generate | occur | produce during cutting | disconnection, and this chip | grain and microparticles | fine-particles may be buried in a liquid crystal cell, and there exists a possibility that a gate and a pad may be polluted.

Therefore, after a cutting process, the process of washing a liquid crystal cell is necessarily performed. Conventionally, cleaning was performed only along the cutout part of the liquid crystal panel, that is, along the edge. This is because the portion where the gate and the pad are located is located outside the liquid crystal cell.

To this end, conventionally, a worker carries out a cut liquid crystal cell directly into a washing apparatus to perform cleaning, and when the washing is completed, the liquid crystal cell is taken out and stored in a cassette.

In addition, after cutting the liquid crystal cell, it is tested whether the liquid crystal cell is functioning properly. In the related art, the operator checks the identification number (ID) of the liquid crystal cell, and stores only the liquid crystal cell that has passed the test in the cassette. The determined liquid crystal cell was loaded in a dummy box.

However, the conventional cleaning method as described above has a disadvantage in that only the edges of the liquid crystal cell are cleaned, so that chips or fine particles scattered during the cutting process and adhered to the central surface of the liquid crystal cell cannot be removed.

In addition, since the operator checks whether the liquid crystal cell is defective or not by checking the ID, and selectively loads the liquid crystal cell in the cassette or the dummy box, the liquid crystal cell determined to be normal or defective due to an operator mistake is often loaded upside down.

And since the operator manually stores the liquid crystal cell in the cassette, a situation in which the surface of the liquid crystal cell is scratched or even broken often occurs in the slot of the cassette.

Accordingly, an object of the present invention is to provide a liquid crystal cell cleaning and conveying system capable of removing not only the edges of liquid crystal cells but also fine particles deposited at the center thereof.

Another object of the present invention is to automatically read the ID of the liquid crystal cell so as to determine whether it is defective, thereby preventing the liquid crystal cell from being reversed and loaded into the cassette or dummy box.

It is another object of the present invention to automatically receive a liquid crystal cell determined as normal in a slot of a cassette, thereby preventing the liquid crystal cell from being scratched or collided with the slot.

1 and 2 are a front view and a plan view showing a liquid crystal cell cleaning and conveying system according to the present invention.

3 is a plan view showing a conveyor which is a main part of the present invention.

4 and 5 are a front view and a plan view showing a camera unit which is a main part of the present invention.

6 is a perspective view showing a cleaning unit which is an essential part of the present invention.

7 is a sectional front view showing the internal structure of the cleaning head.

8 is a front view showing a stage of the cleaning unit.

-Explanation of symbols for the main parts of the drawing-

One ; Table 10; conveyor

20; Import unit 30; Camera unit

40; Cleaning unit 60; Fork unit

70; cassette

In order to achieve the above object, the cleaning and conveying system according to the present invention has the following configuration.

A conveyor for transporting liquid crystal cells is arranged on the table, and liquid crystal cells individually cut through the inlet of the conveyor are carried in, and at the outlet, a cassette in which only liquid crystal cells determined to be normal are stored in a stack is arranged. An import unit for placing the liquid crystal cell on the conveyor by placing the liquid crystal cell on the conveyor entrance, a camera unit for photographing the unique number of the liquid crystal cell for good judgment, a cleaning unit for removing particulates from the liquid crystal cell, and a normal determination Fork units for accommodating the liquid crystal cell in the cassette are sequentially arranged.

The carry-in unit includes: a U-shaped stage in which the inlet side of the conveyor is opened; And a pneumatic cylinder for elevating the stage. A pair of alignment members for pushing and aligning both sides of the liquid crystal cell to both sides of the stage are arranged, and each alignment member is moved by a pneumatic cylinder provided in the conveyor.

The camera unit includes a pair of longitudinal robots disposed on both sides of the conveyor; A transverse robot which is lifted by the longitudinal robot; And a camera installed on the horizontal robot. In addition, each longitudinal robot is provided with a micrometer, the position can be adjusted along the moving direction of the conveyor.

The cleaning unit is disposed on both sides of the conveyor, the groove portion is formed on the opposite inner side, the long groove connected to the groove portion is formed on the outer side of the pair of long and vertical support; Both ends are inserted into the grooves on both sides of the support, and are fixed at a predetermined position of the long groove by fixing bolts inserted from the long grooves, and both top surfaces are fastened to at least one height adjustment bolt fastened from the top surface of each support, and the bottom surface An opening through which a cleaning gas is injected is formed along a center thereof, and both sides of the opening are inclined at an acute angle with respect to the horizontal plane; A pair of ion gas injectors disposed at both inner sides of the cleaning head and spraying the cleaning gas ionized through the opening to the surface of the liquid crystal cell; A vacuum inhaler disposed at the inner center of the cleaning head, for suctioning and removing the fine particles excited on the surface of the liquid crystal cell by the cleaning gas through the openings; A guide rail disposed along a moving direction of the conveyor on a table below the cleaning head; A pneumatic cylinder movably connected to the guide rail; A stage installed at the upper end of the pneumatic cylinder, where the liquid crystal cell determined to be normal is placed; And a stepping motor for moving the stage and the pneumatic cylinder along the guide rail.

On the other hand, the stage is composed of the upper plate and the lower plate, the lower plate upper surface is formed with a plurality of insertion grooves, the lower surface of the upper plate is formed, the insertion portion is inserted into each insertion groove is projected. The upper plate is changed in size according to the model of the liquid crystal cell, and a vacuum line for adsorbing the liquid crystal cell in a vacuum is connected.

The fork unit includes a pneumatic cylinder installed on the table; A stage installed at the upper end of the pneumatic cylinder, the liquid crystal cell is placed; A fork installed on the predetermined portion of the stage so as to reciprocate and to carry the liquid crystal cell into the cassette; And a stepping motor for reciprocating the fork. Alignment members are also arranged on both sides of the stage of the loading unit, and the alignment members are moved by a pair of pneumatic cylinders installed on the conveyor.

On the other hand, holders having support shafts are provided on the table at the center of both sides of the conveyor in both directions perpendicular to the moving direction of the conveyor. The inner end of the lead screw is held by each support shaft of the holder, and the lead screw is rotated in position. The lead screw is screwed into both conveyors, and an adjustment handle is installed at the outer end of the lead screw which protrudes the conveyor. The adjusting handle is installed at either of the two sides of the conveyor, and the other end of the lead screw without the adjusting handle is connected to the other end of the lead screw on which the adjusting handle is installed by a timing belt to receive the operating force of the adjusting handle.

According to the above-described configuration of the present invention, the operator simply places the liquid crystal cell on the stage of the carrying unit, and the camera unit photographs the ID of the liquid crystal cell to confirm whether there is a non-payment in the preceding test process, and the defective liquid crystal cell. Is a dummy box, and the normal liquid crystal cell is conveyed on a conveyor. The normal liquid crystal cell is moved in a state settled on the stage of the cleaning unit, so that the particles deposited on its surface are lifted up by the ion gas injected from the ionizing gas injector of the cleaning head, and the particulate matter is sucked in by the vacuum inhaler. The liquid crystal cells conveyed to the fork unit are stored in the cassettes one by one by the fork.

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

1 and 2 are a front view and a plan view showing a liquid crystal cell cleaning and conveying system according to the present invention, Figure 3 is a plan view showing a conveyor which is a main part of the present invention, Figures 4 and 5 is a camera which is a main part of the present invention 6 is a perspective view showing a cleaning unit which is an essential part of the present invention, FIG. 7 is a front sectional view showing the internal structure of the cleaning head, and FIG. 8 is a front view showing a stage of the cleaning unit.

First, as shown in Figures 1 and 2, the liquid crystal cell cleaning and conveying system according to the present invention is a table 1, the conveyor 10 of a predetermined height disposed on the table 1, the conveyor 10 And a loading unit 20, a camera unit 30, a cleaning unit 40, and a fork unit 60 sequentially arranged from the entrance. On the outlet side of the conveyor 10, a cassette 70 is arranged in which only liquid crystal cells determined to be normal are stacked, and the cassette 70 is pitched at a predetermined pitch, i.e., by the pneumatic cylinder 71 disposed thereunder. The slot interval of 70 is raised and lowered.

First, the conveyor 10 does not need to change its width unless the size of the liquid crystal cell changes, but there are various models of the liquid crystal cells currently manufactured, and accordingly, the size of the liquid crystal cell is also various. Means for varying the width of the conveyor 10 are provided in the conveyor 10, the structure of which is shown in detail in FIG.

As shown, a pair of holders 11 are arranged in the center of the center between the two sides of the conveyor 10 so that the holders 11 are installed on the table although not shown. Each holder 11 has a pair of support shafts 12 in both directions perpendicular to the direction of movement of the conveyor 10. The inner end of the lead screw 13 is supported by being fitted to each of the support shafts 12 of the holder 11, and in particular, the support shaft 12 supports the lead screw 13 so as to be rotatable only. 13) so that it only rotates in place.

On the other hand, since there are two holders 11, the total number of lead screws 13 is four. In FIG. 3, the conveyor 10 is divided into two left and right, and accordingly, four holders 11 and four lead screws 13 are provided. Is composed of a total of eight. The reason for this configuration is to prepare for the case where it is necessary to adjust the width of the conveyor 10 to the left and right.

The lead screw 13 is screwed to the conveyor 10 so as to reduce or increase the width of the conveyor 10 in accordance with its rotation direction. At each other end of the lead screw 13 passing through the conveyor 10, an adjustment handle 14 for manually rotating the lead screw 13 is provided. The adjusting handle 14 may be installed at both ends of each lead screw 13, but is provided only at the other ends of the lead screws 13 arranged in the same direction so that the widths of both sides of the conveyor 10 are always the same. It is preferable. In FIG. 3, the adjustment handle 14 is shown only in the lead screw 13 arrange | positioned at the inlet side of the conveyor 10. As shown in FIG. On the other hand, in order to transmit the operating force of the adjustment handle 14 to the lead screw 13 arranged on the outlet side of the conveyor 10, the other end of the lead screw 13 arranged on the outlet side of the conveyor 10 is the inlet side. It is connected to the other end of the lead screw 13 disposed in the timing belt 15. In addition, when operating the adjustment handle 14 disposed only in one direction, the balance weight (balance weight: 16) is adjusted to prevent the phenomenon that vibration occurs in the conveyor 10 due to the eccentric weight. ) And the lead screw 13 are preferably installed in parallel along the longitudinal direction of the conveyor 10.

The configuration of the loading unit 20 on which the liquid crystal cell is placed on the conveyor 10 having the above configuration will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the loading unit 20 includes a stage 21 on which an operator places a liquid crystal cell. The stage 21 has a width shorter than the width of the conveyor 10 to be lowered below the height of the conveyor 10 while being disposed between the conveyors 10. Although the stage 21 may be a simple flat plate shape, as shown in FIG. 2, it is preferable that the inlet side of the conveyor 10 has an open U-shape so that no interference occurs between the operator's hand and the stage 21. Do. The U-shaped stage 21 is connected by a pneumatic cylinder 22 provided on the table 1, and the liquid crystal cell is lowered on the conveyor 10 by the pneumatic cylinder 22 while being lowered below the conveyor 10. It will be put up.

In addition, a pair of alignment members 24 for pushing and aligning both sides of the liquid crystal cell are disposed so that the liquid crystal cell is accurately placed on the conveyor 10. Both ends of the alignment member 24 protrude in a short length, so that the liquid crystal cell enters between both projections. The alignment member 24 is moved by the pneumatic cylinder 23 installed on the conveyor 10.

The liquid crystal cell placed on the conveyor 10 by the import unit 20 configured as described above moves on the conveyor 10 to the lower portion of the camera unit 30. The detailed structure of the camera unit 30 is shown in FIGS. 4 and 5.

As shown, a pair of longitudinal robots 31 are arranged on both sides of the conveyor. The horizontal robot 32 which traverses the both longitudinal robots 31 is provided, and the camera 33 which captures the unique ID of a liquid crystal cell is provided in the horizontal robot 32. Therefore, the camare 33 is moved up and down by the longitudinal axis robot 31, and is moved left and right by the horizontal axis robot 32. In addition, in order to adjust the position of the longitudinal robot 31 along the moving direction of the conveyor 10, each longitudinal robot 31 is provided with the micrometer 34. As shown in FIG.

Here, the camera 33 photographs the ID of the liquid crystal cell, so that the liquid crystal cell is classified according to the prepayment of the liquid crystal cell predetermined in the test step, which is a preceding step. That is, when the camera 33 photographs the ID of the liquid crystal cell, this image is transferred to the controller to which the test process result is input, so that the liquid crystal cell can be easily sorted according to the good or bad judgment. That is, the liquid crystal cell having an ID determined as defective is taken out from the conveyor 10 by the operator and loaded in the dummy box, and only the liquid crystal cell determined as normal is continuously conveyed on the conveyor 10.

The liquid crystal cell determined to be normal is returned to the cleaning unit 30. The cleaning unit 30 is shown in detail in FIGS. 6 to 8. Referring to FIG. 6, the cleaning unit 30 includes a pair of supports 41 disposed on both sides of the conveyor 10. Grooves 41a are formed on the inner side of each support 41 in the same shape and size, and two long grooves 47 connected to the grooves 41a are formed long on the outer side of the support 41. Both ends of the cleaning head 42 are fitted into the groove portions 41a. The upper and lower lengths of the groove portions 41a and the length of the long grooves 47 are longer than the thickness of the cleaning head 42, so that the height of the cleaning head 42 is increased. Can be adjusted within the length range of the groove portion 41a.

To this end, both ends of the cleaning head 41 are fastened to the fixing bolt 48 that enters through the long groove 47, and is fixed at a predetermined position of the long groove 47. In addition, the lower ends of the three height adjustment bolts 49a and 49b entered from the upper surface of each support 41 are fastened to the upper surfaces of both ends of the cleaning head 42 entered into the groove 41a. That is, the height of the cleaning head 42 is adjusted by loosening the fixing bolt 48 and the both side adjustment bolts 49b and tightening or releasing the center adjustment bolts 49a.

As shown in Fig. 7, the cleaning head 42 is an inclined surface 44 whose lower surface is not parallel to the liquid crystal cell and is inclined with the liquid crystal cell by a predetermined acute angle, approximately 45 degrees. The opening part 43 is formed in the center of the inclined surface 44, that is, the portion where both inclined surfaces merge. A pair of ionization gas injectors 45 for injecting ionization gas through the opening 43 are disposed on both sides of the cleaning head 42. Therefore, the ionization gas is inclined to the surface of the liquid crystal cell via the inclined surface 44 through the opening 43, thereby making it possible to more easily lift the fine particles on the surface of the liquid crystal cell. In particular, the ionization gas also exhibits the effect of static electricity charged on the surface of the liquid crystal cell. On the other hand, nitrogen gas is preferable as the ionization gas used in the present invention.

A vacuum inhaler 46 for suctioning the particulates excited on the liquid crystal cell surface by the ionization gas into the vacuum is disposed at the inner center of the cleaning head 42. In other words, the fine particles are removed by being sucked into the vacuum inhaler 46 through the opening 43.

On the other hand, since the cleaning head 42 does not move in the right position, the surface of the liquid crystal cell should be moved in a state very close to the lower surface of the cleaning head 42. To this end, as shown in FIG. 8, the stage in which the liquid crystal cell is placed is composed of an upper plate 50 and a lower plate 51. The reason why the stage is composed of the upper and lower plates 50 and 51 as described above is to effectively cope with liquid crystal cells of various sizes. That is, in the related art, when the size of the liquid crystal cell is changed, the entire stage has to be replaced, but in the present invention, the top plate 50 having the size corresponding to the size of the liquid crystal cell may be replaced. Therefore, the upper plate 50 should be able to be easily separated from the lower plate 51, for this purpose several inserts 54 are formed on the lower surface of the upper plate 50, the upper surface of the lower plate 51 An insertion groove (not shown) into which the insertion portion 54 is fitted is formed. The lower plate 51 is connected to the pneumatic cylinder 53 to be elevated. In order to adsorb the liquid crystal cell by vacuum, a vacuum line 52 is connected to the upper plate 50 on which the liquid crystal cell is placed.

On the other hand, in order to allow the entire surface of the liquid crystal cell settled on the upper plate 50 to pass under the cleaning head 42, as shown in FIG. 1, the pneumatic cylinder 53 is installed on the base 55, and the base 55 is movably connected to the guide rail 56 provided on the table 1. The base 55 is moved along the guide rail 56 by a stepping motor (not shown). In addition, a guide rod 57 for supporting the upper and lower plates 50 and 51 which are lifted and lowered by the pneumatic cylinder 53 is disposed on the base 55.

The liquid crystal cell from which the fine particles have been removed from the cleaning unit 40 is conveyed back to the fork unit 60 via the conveyor 10. As shown in FIG. 1, the fork unit 60 includes a stage 61 on which a cleaned liquid crystal cell is placed. The stage 61 is elevated by the pneumatic cylinder 62 provided on the table 1. Like the carrying unit 20, in order to align the liquid crystal cell accurately on the stage 61, a pair of alignment members 65 for pushing the liquid crystal cell are disposed on both sides of the conveyor 10. Each alignment member 65 is moved by a pneumatic cylinder 64 provided on the conveyor 10.

The fork 63 is installed in a predetermined portion on the stage 61 so as to reciprocate from side to side, and the fork 63 is moved back and forth in the cassette 70 direction by a stepping motor (not shown), thereby providing a liquid crystal cell. The cassettes are loaded into the cassettes 70 one by one.

Hereinafter, the operation of the system according to the present embodiment having the above configuration will be described in detail.

First, the operator places the liquid crystal cell which is individually cut and the test process is completed on the stage 21 of the loading unit 20. At this time, since the stage 21 has a U-shape in which the inlet side direction of the conveyor 10 is opened, the operator's hand does not interfere with the stage 21. Each alignment member 24 is moved inward by the pneumatic cylinder 23 to align the liquid crystal cell in the correct position.

In this state, the camera 33 photographs the ID of the liquid crystal cell and transmits this image to the controller. The position of the camera 33 is adjusted correctly by the longitudinal axis robots 31 and 32, and the position of the longitudinal axis robot 31 is also adjusted by the micrometer 34 in the moving direction of the conveyor 10. As shown in FIG. Since the test result of the liquid crystal cell is input to the controller in advance for each ID, the controller recognizes the non-payment of the liquid crystal cell according to the transmitted ID. As a recognition method, an alarm sound can be made in the case of a defective liquid crystal cell. The liquid crystal cell determined as defective is loaded into the dummy box by the operator, and only the normal liquid crystal cell is returned to the subsequent step.

Then, the stage 21 is lowered below the conveyor 10 by the pneumatic cylinder 22, and the liquid crystal cell is seated on the conveyor 10. The liquid crystal cell conveyed on the conveyor 10 reaches the cleaning unit 40. As the upper and lower plates 50 and 51 are lifted by the pneumatic cylinder 53, the liquid crystal cell is settled on the upper plate 50 and raised to a height slightly higher than the conveyor 10. The liquid crystal cell is firmly adsorbed to the top plate 50 by the vacuum pressure provided in the vacuum line 52. Here, since the upper plate 50 is simply inserted into the insertion groove of the lower plate 51, when the size is changed by changing the model of the liquid crystal cell, it is easily replaced with another upper plate 50 suitable for the changed size. Can be.

The base 55 is moved by the stepping motor so that the liquid crystal cell enters under the cleaning head 42. Nitrogen ionization gas is injected from each ionization gas injector 45 to the surface of the liquid crystal cell through the opening 43. Since the ionization gas is guided by the inclined surface 44, it is injected at an acute angle to the surface of the liquid crystal cell. Therefore, the fine particles deposited on the surface of the liquid crystal cell can be lifted from the surface more easily than the vertical injection. In addition, the ionization gas also exhibits the effect of static electricity charged on the surface of the liquid crystal cell. Particulates excited at the surface of the liquid crystal cell by the ionization gas are sucked out through the opening 43 by the vacuum pressure provided from the vacuum inhaler 46 and removed. In particular, since the cleaning head 42 is disposed across both sides of the conveyor 10, it is possible to remove all fine particles from the entire surface of the liquid crystal cell being moved.

In addition, the height of the cleaning head 42 is adjusted according to the liquid crystal cell. That is, when the fixing bolt 48 is loosened and both side height adjustment bolts 49b are also loosened and both center height adjustment bolts 49a are tightened or loosened, the cleaning head 42 is raised or raised in the groove portion 41a. By descending, the height can be set to a desired position.

After the cleaning is completed, the liquid crystal cell is stopped at the fork unit 60 and placed on the stage 61 lifted by the pneumatic cylinder 62. At the same time, each alignment member 64 is moved inward by the pneumatic cylinder 65, so that the liquid crystal cell is aligned. The fork 63 is advanced toward the cassette 70 by the stepping motor, so that the liquid crystal cell is inserted into the slot of the cassette 70 and accommodated therein. The cassette 70 is lowered by a predetermined pitch by the pneumatic cylinder 71, so that one liquid crystal cell is stored for each slot.

On the other hand, if the size, i.e., the left and right width, is changed by the model change of the liquid crystal cell, the width of the conveyor 10 is changed accordingly. That is, when both adjustment handles 14 are rotated, the operation force of the adjustment handle 14 is transmitted to the lead screw 13 directly or indirectly through the timing belt 15, so that each lead screw 13 rotates in position. do. Therefore, the conveyor 10 is pinched or opened according to the rotation direction of the lead screw 13, so that the distance between the conveyors 10 is adjusted to match the width of the liquid crystal cell.

According to the present invention as described above, the cleaning unit can remove not only the edges of the liquid crystal cell but also the fine particles on the entire surface, whereby the fine particles continue to be present, thereby preventing the liquid crystal cell from failing.

In addition, since the camera captures the ID of the liquid crystal cell and transmits the ID to the controller, whether or not the liquid crystal cell is correctly made or not, the defective liquid crystal cell is stored in the cassette, or the normal liquid crystal cell is placed in the dummy box and disposed of or repaired. Is also prevented.

In addition, since each liquid crystal cell is automatically stored in the cassette by the fork unit, the liquid crystal cell is prevented from being scratched or crashed into the slot of the cassette.

In particular, the conveyor of the present invention can adjust the left and right width, it is possible to effectively cope with the liquid crystal cells of various sizes.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

Claims (14)

A conveyor in which a liquid crystal cell which has been individually cut from the inlet side and subjected to a quantitative test has been carried in, and a cassette in which the liquid crystal cell determined to be normal is housed on the outlet side; An import unit installed at an inlet side of the conveyor to seat the liquid crystal cell on the conveyor; A camera unit which photographs a unique number of the liquid crystal cell placed in the import unit, and transmits the photographed image to a controller in which a test result is input to classify a normal liquid crystal cell and a bad liquid crystal cell; A cleaning unit which removes the fine particles from the camera unit during the cutting process on the surface of the liquid crystal cell which is determined to be normal and conveyed on the conveyor; And And a fork unit disposed at the exit side of the conveyor to accommodate the liquid crystal cell having been cleaned in the cleaning unit in the cassette. 2. A holder according to claim 1, wherein a holder is disposed at the center of each of the inlet and the outlet of the conveyor, and the holder has a pair of support shafts in both directions perpendicular to the direction of movement of the conveyor, One end is inserted so that the lead screw is rotated in position, and each lead screw is screwed to the conveyor so that the width of the conveyor is adjusted by pinching or spreading the conveyor according to the direction of rotation thereof, and each lead protruding from the conveyor. And a control handle for rotating the lead screw on the other end of the screw. The timing belt according to claim 2, wherein the adjustment handle is installed only on a lead screw disposed at the inlet side or the outlet side of the conveyor, and the other end of the other lead screw without the adjustment handle is disposed at the other end of the lead screw on which the adjustment handle is installed. Liquid crystal cell cleaning and conveying system, characterized in that connected to. The liquid crystal cell cleaning and conveyance system according to claim 3, wherein a balance weight is provided in parallel with a lengthwise direction of the conveyor at a connection portion of the adjustment handle and the lead screw. The method of claim 1, wherein the import unit A stage in which a liquid crystal cell is placed, the stage being sized to descend below the conveyor through the conveyor; And And a pneumatic cylinder for elevating the stage. 6. The liquid crystal cell cleaning and conveyance system according to claim 5, wherein the stage has a U-shape in which an inlet side direction of the conveyor is opened. The method of claim 5, wherein a pair of alignment members for pushing and aligning both sides of the liquid crystal cell placed on the stage is disposed on both sides of the conveyor, each alignment member is moved by a pneumatic cylinder installed on the conveyor Liquid crystal cell cleaning and conveying system. The method of claim 1, wherein the camera unit A pair of longitudinal robots disposed at both sides of the conveyor; A transverse axis robot which is connected across each of the longitudinal axis robots and is elevated by the longitudinal axis robots; And And a camera mounted on the horizontal robot and configured to photograph and transmit a unique number of the liquid crystal cell to the controller. The method of claim 1, wherein the cleaning unit A pair of supports disposed on both sides of the conveyor; A cleaning head connected between the supports and having an opening formed at a lower surface thereof; A pair of ionization gas injectors disposed at both inner sides of the cleaning head to spray ionization gas to the surface of the liquid crystal cell through the opening to lift particles from the surface of the liquid crystal cell; A vacuum inhaler disposed at an inner center of the cleaning head to suck fine particles excited on the surface of the liquid crystal cell by the ionization gas at a vacuum pressure; A stage disposed below the cleaning head in a vertical direction, in which a liquid crystal cell is placed; A pneumatic cylinder for raising the stage to be positioned proximate to the bottom surface of the cleaning head; And a stepping motor for moving the pneumatic cylinder along a conveyor moving direction to inject the ionizing gas onto the entire surface of the liquid crystal cell. 10. The fixing bolt according to claim 9, wherein grooves into which both ends of the cleaning head are fitted are formed on opposite surfaces of the support, and a long groove connected to the groove is formed vertically long on an outer surface of the support, and is fixed through the long groove. Is fastened to the cleaning head to fix the cleaning head at a predetermined position of the long groove, and the height adjustment bolt which is fastened to the upper surface of the cleaning head entered into the groove to adjust the height of the cleaning head is installed on the upper surface of the support. A liquid crystal cell cleaning and conveying system characterized by the above-mentioned. 10. The liquid crystal cell cleaning of claim 9, wherein the lower surface of the cleaning head is formed to be inclined at an acute angle with respect to the surface of the liquid crystal cell, and the ionizing gas injected from each of the ionization gas injectors is inclined to be sprayed onto the surface of the liquid crystal cell. Conveying system. The method of claim 9, wherein the stage A top plate having a plurality of inserts formed on a lower surface thereof, and having a vacuum line connected to vacuum the liquid crystal cell; And Including a lower plate formed in the upper surface of the insertion groove into which the respective inserts of the upper plate, A liquid crystal cell cleaning and conveying system, configured to replace only the top plate according to the size of a liquid crystal cell. The method of claim 1, wherein the fork unit A stage in which the liquid crystal cell is placed; A pneumatic cylinder for elevating the stage; A fork disposed on the stage so as to be moved forward and backward in a cassette direction to accommodate a liquid crystal cell placed on the stage in a cassette; And And a stepping motor for advancing and retreating the fork. The method of claim 13, wherein a pair of alignment members for pushing and aligning both sides of the liquid crystal cell placed on the stage is disposed on both sides of the conveyor, each alignment member is moved by a pneumatic cylinder installed on the conveyor Liquid crystal cell cleaning and conveying system.