KR200407473Y1 - Electrode Inspection System for Cold Cathode Fluorescent Lamp - Google Patents

Abstract

The present invention is an electrode body inspection device for Cold Cathode Fluorescent Lamp (CCLF), and more specifically, the main part of the electrode for Cold Cathode Fluorescent Lamp can be automatically identified and screened for defects through image analysis. The present invention relates to an electrode body inspection device for a cold cathode fluorescent lamp.

The present invention is a chute (100) for sequentially supplying the electrode body 20 in an upright state such that the outer lead wire 22 is directed downward; A rotation transfer part 200 which attaches the electrode bodies sequentially introduced from the chute to the outer circumferential surface by magnetic force and transfers them to one side; A photographing unit 300 disposed around the rotational conveying unit and having a plurality of cameras and lighting apparatuses for photographing a main part of the electrode body conveyed through the rotational conveying unit; A controller which receives the image data photographed from the photographing unit and determines whether the electrode body is defective for each part; And a take-out part 400 which is selectively operated according to a failure occurrence signal transmitted from the controller to take out the electrode body for each defective part.

Cold Cathode Fluorescent Lamp, CCLF, Electrode Inspection, Camera, Rotating Disc

Description

Tester for cathode assembly of cold cathode fluorescent lamp

1 is a cross-sectional view showing the configuration of a typical cold cathode fluorescent lamp.

Figure 2 is an external perspective view of the electrode body inspection device for a cold cathode fluorescent lamp according to the present invention.

3 is a plan view of FIG.

4 is a cross-sectional view taken along the line IV-IV of FIG. 3, showing the state in which the electrode body is attached to the rotating disc.

5A and 5B are a perspective view and a plan view respectively showing a state in which an electrode body is supported between a chute and a support base of the present invention;

Figure 6 is a camera layout of the photographing unit constituting the present invention.

Figure 7 is a perspective view showing a first cylinder constituting the present invention.

FIG. 8 is a diagram illustrating an inspection screen in which a control unit of the present invention overlaps a preset inspection image and image data transmitted from a photographing unit so as to determine whether each part of the electrode body is defective.

9 is a perspective view showing a takeout part of the present invention;

10 is a perspective view showing a second cylinder constituting the present invention;

<Explanation of symbols for main parts of the drawings>

100 ... chute 200 ... rotary feeder

210 ... rotating disc 220 ... sitting groove

230 ... magnet 300 ...

310 ... First Camera 320 ... Second Camera

330 Third Camera 340 Lighting

400 ejection part 410 ejection cylinder

420 ... Ejection 430,460

450.Extracting member 510 ... First cylinder

520 ... 2nd cylinder

The present invention is an electrode body inspection device for Cold Cathode Fluorescent Lamp (CCLF). More specifically, the main part of the electrode for Cold Cathode Fluorescent Lamp can be identified and screened automatically by computer for image analysis. The present invention relates to an electrode body inspection device for a cold cathode fluorescent lamp.

In TFT-LCD monitors, which are rapidly spreading in recent years, since LCDs are not self-luminous devices, they require a light source called a backlight. As the light source, a conventional hot cathode tube is not suitable because it is difficult to miniaturize the structure of the electrode and high temperature is generated from the filament. In general, the hot cathode tube emits light by stimulating a fluorescent substance applied to the inside of a lamp by a gas discharge method. Cold cathode fluorescent lamps are being used.

Conventional cold cathode fluorescent lamps have long lifespan from 6mA to 50,000 hours, high efficiency and high brightness performance, can be manufactured in a compact size, and the diameter and length of the lamp 10 can be freely adjusted and the shape can be easily changed. In addition, due to advantages such as warm color tone, such as natural light, as well as high color rendering, it is widely used as a backlight installed in liquid crystal digital devices such as LCD, liquid crystal TV.

As shown in FIG. 1, a typical cold cathode fluorescent lamp includes a lamp 10 filled with a mixed gas such as mercury, argon and neon as a discharge medium, and an electrode body 20 sealingly bonded to both ends of the lamp 10. It consists of. The fluorescent agent 11 is applied to the inner wall of the lamp 10.

The electrode body 20 includes an electrode 21 made of metal and an external lead wire 22 made of dumet or nickel, the surface of which is an alloy of iron and nickel, so as to supply power to the electrode 21, and The inner lead wire 23 is fused with the lamp 10 and connected to the electrode 21 positioned inside the lamp 10 and protected by the bead glass 24 fused to the outside.

The cold cathode fluorescent lamp having such a configuration is shipped as a finished product through the assembly process between the electrode body 20 and the lamp 10. Since the electrode body 20 is a core part of the cold cathode fluorescent lamp, A separate inspection process is essential before assembly.

The inspection process for the electrode body 20 checks items such as external dimensions and appearance of each main part of the electrode body, for example, the electrode, the outer lead wire 22, the inner lead wire 23, and the bead glass 24. As the size of the electrode body 20 is very small and minute, the operator places each electrode body 10 one by one using tweezers on the work table and then visually checks whether the electrode body is defective through a magnifying glass or a microscope. do.

However, such a conventional electrode body inspection method has a problem that the operator has to move the electrode body one by one with tweezers, and then directly discriminate with the naked eye. .

In addition, in the process of picking up the electrode body with tweezers and placing it on the workbench, the electrode is frequently pressed and damaged by the tweezers, and thus the electrode body inspector itself acts as another factor for generating defective products.

The present invention has been made in view of the above-described conventional problems, and provides an electrode body inspection apparatus for a cold cathode fluorescent lamp, which allows the inspection of the electrode body to be automatically and quickly and accurately and prevents defects from occurring during the inspection of the electrode body. Its purpose is to.

In order to achieve the above object, the present invention is a chute for sequentially supplying the electrode body in an upright state so that the outer lead line is downward; A rotation transfer unit which attaches the electrode bodies sequentially introduced from the chute to the outer circumferential surface by magnetic force and transfers them to one side; A photographing unit having a plurality of cameras and a lighting device arranged at a periphery of the rotatable conveying unit and photographing a main part of the electrode body conveyed through the rotatable conveying unit; A control unit which receives the image data photographed from the photographing unit and determines whether the electrode body is defective for each defective area; And a takeout part which is selectively operated according to a failure occurrence signal transmitted from the controller to take out the electrode body for each defective part.

The rotational transfer part includes a rotating disc having an outer circumferential surface adjacent to an end of the chute, and a plurality of seating grooves vertically formed at regular intervals on the outer circumferential surface of the rotating disc so that the outer lead wire of the electrode body supplied from the chute is seated; Corresponding to the mounting groove of the rotating disk is provided in the center portion is composed of a magnet for attaching the outer lead wire of the electrode body to the mounting groove.

The control unit receives the image data photographed from the photographing unit and judges whether the electrode body is defective for each portion of the electrode body in comparison with the inspection image in which the normal region for each portion of the electrode body is set in advance. The different transmission signal is sent to the ejection part according to the location of the failure.

In addition, it is preferable that the first cylinder for correcting the height of the lower end of the outer lead line of the electrode body passing through the upper portion of the rotating disc between the chute and the photographing unit.

The ejection part is disposed toward the center of the rotation disc along the outer circumference of the rotation disc and is selectively installed at the rod ends of the ejection cylinders and the ejection cylinders that are selectively operated according to a failure occurrence signal transmitted from the controller. A blowout piece for taking out the electrode body positioned in front while moving back and forth along the cylinder rod during driving, and a lower portion adjacent to the rotating disc toward the front of the blowout cylinder so that the electrode body taken out through the takeout piece is freely dropped and discharged to the outside; It may be composed of a blowout hole formed in.

In this case, it is preferable that the second cylinder for correcting the height of the upper end of the electrode body so as not to interfere with the upper end of the electrode body passing through the lower portion and the upper portion of the rotary disk in front of the take-out portion.

The features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments based on the accompanying drawings. Prior to this, terms or words used in the present specification and claims are defined in the technical spirit of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to best describe his or her own design. It must be interpreted to mean meanings and concepts.

The present invention focuses on the external lead wire of the electrode body constituting the cold cathode fluorescent lamp made of a magnetic material, and as shown in FIGS. 2 and 3, a chute for sequentially supplying the electrode body 20 in an upright state. 100 and the rotary transfer unit 200 attached to the outer circumferential surface by magnetic force and sequentially transferred from the chute 100 to the outer circumferential surface, and are disposed and rotated around the rotary transfer unit 200. An image photographed by the photographing unit 300 having a plurality of cameras 310, 320, 330 and an illumination device 340 photographing a main part of the electrode body 20 transferred through the conveying unit 200, and an image photographed by the photographing unit 300. A control unit for determining whether the electrode body 20 is defective for each defective area by receiving the data, and the extraction unit 400 which is selectively operated according to the failure occurrence signal transmitted from the controller to take out the electrode body 20 for each defective area 400. )

The chute 100 is installed to be inclined so that the bottom thereof is downward, and the electrode body supply device is connected to the top. The electrode body supply device includes a hopper (not shown) into which the electrode body 20 to be inspected is introduced, a bowl feeder F1 through which the electrode body 20 exiting the hopper is sequentially passed, and a bowl The liner feeder connected to the electrode body 20 passing through the feeder F1 is aligned so that the outer lead line 22 faces downward, and naturally enters the groove 110 at the top of the chute 100. : F2). The electrode body supply device is not the main configuration of the present invention, so detailed description thereof will be omitted.

In the center of the chute 100, the groove 110 is formed over the whole section along the longitudinal direction. The electrode body 20 that has passed through the liner feeder F2 of the electrode body supply device is in a state in which the lower end of the bead glass 23 is hung on the upper end of the groove 110 so that the outer lead wire 22 faces downward. The furnace 110 is inserted into the groove 110 and is transferred to the bottom of the chute 100.

A separator 120 may be further installed below the chute 100 to pass through the electrode body 20 transported along the groove 110 at a predetermined interval. The separator 120 is provided with a pair across the groove portion 110 and the electrode body 20 to be transferred along the groove portion 110 by passing the electrode body 20 step by step while moving left and right cross the rotational transfer portion ( 200) is operated to pass one by one at a predetermined interval.

The rotary feeder 200 is disposed below the chute 100. The rotary feeder 200 has a rotary disc 210 having an outer circumferential surface adjacent to the end of the chute 100 and an external lead wire 22 of the electrode body 20 supplied in an upright state from the chute 100. A plurality of seating grooves 220 vertically formed at regular intervals on the outer circumferential surface of the rotating disc 210 to be seated thereon, and provided at the center of the outer circumferential surface of the rotating disc 210 so as to correspond to the respective seating recesses 220. It consists of a magnet 230 for attaching the outer lead wire 22 of the sieve 20 to the seating groove 220.

As shown in Figure 4, the rotating disk 210 is made of a non-magnetic material is not affected by the magnetic force, the rotation axis is installed at the center thereof. The lower portion of the rotating disk 210 is connected to the rotating shaft is provided with a motor (M) for rotating the rotating disk 210 to one side at a constant speed.

On the other hand, the bottom surface of the rotating disk 210 may have a receiving groove 211 is formed adjacent to the seating groove 220 so that the magnet 230 is not exposed to the outside of the rotating disk 210 to accommodate the magnet. have. In this case, the inlet of the accommodating groove 211 is closed by the predetermined member 212 after the magnet 230 is inserted into the rotating disk 210 through the accommodating groove 211, so that the magnet 230 is the accommodating groove. There is no deviation from 211. The inlet of the receiving groove is suitable for the silicon 212 is a non-magnetic material and does not require a separate fixing operation.

As shown in FIG. 5, the support member for supporting the electrode body 20 to be smoothly attached to the seating groove 220 of the rotation disk 210 at the lower end of the chute 100 at the upper portion of the rotation disk 210 ( 240 is provided. The support member 240 supports the electrode body 20 so that the electrode body 20 can stand in an upright state at the lower end of the chute 100 before being attached to the seating groove 220 of the rotation disc 210. .

The electrode body 20 is to stand in the state in which the lower end of the bead glass 23 of the electrode body 20 is supported on one side of the support member 240. In this state, the electrode body 20 and the rotating disc 210 are not in contact with each other, and are attached to the mounting groove 220 by magnetic force when the mounting groove 220 of the rotating disc 210 passes.

Meanwhile, an electrode body 20 sensor 250 may be further attached to one side of the support member 240. In this case, the detection sensor 250 notifies the controller of the standby state of the electrode body 20 to cause the controller to operate the rotating disc 210.

On the basis of the traveling direction of the rotation disk 210, the front of the rotation disk 210 and the plurality of cameras (310, 320, 330) to photograph the main part of the electrode body 20 is transferred through the rotation transfer unit 200 The photographing unit 300 having the lighting device 340 is disposed.

As shown in FIG. 6, the cameras 310, 320, and 330 are installed in different directions so that the main part of the electrode may be photographed in each direction. In this embodiment, for example, the second camera 320 disposed in a line with the center of the rotation disk 210, and the first and third cameras 310 and 330 are installed on both sides of the second camera 320, for example. .

The cameras 310, 320, and 330 sequentially photograph the electrode body 20 when the electrode body 20 reaches an optimal photographing position, and transmit the photographed image data to the controller in real time.

On the other hand, as shown in Figure 7, the interval between the chute 100 and the photographing unit 300 is provided in the lower portion of the rotating disc 210, the lower end of the outer lead line 22 of the electrode body 20 passing through the top A first cylinder 510 may be further provided to correct the height of the cylinder.

The first cylinder 510 is operated to push up the lower end of the outer lead wire 22 of the electrode body 20 passing through the upper portion to a predetermined height, whereby the electrode body 20 is attached to the side of the rotation disc 210. The bottom height of the external lead wire 22 is corrected to maintain the predetermined height or more. As such, when the bottom height of the external lead wire 22 is corrected through the first cylinder 510, all of the electrode bodies 20 are always photographed at the same position, thereby improving reliability of the bad judgment.

As described above, the image data photographed by the photographing unit 300 is transmitted to the control unit. The controller receives image data from the photographing unit 300 in real time and determines whether there is a defect for each part of the electrode body 20 through image analysis.

That is, as shown in FIG. 8, the controller compares the image data transmitted from the photographing unit 300 with the inspection image in which the normal region for each part of the electrode body 20 is preset, and prepares the electrode body 20. ) Is automatically judged whether or not the electrode body 20 is defective for each part of the electrode body 20 depending on whether or not to be out of the above area. The control unit generates different failure generation signals according to the failure occurrence position of the electrode body 20, and transmits them to the takeout unit 400.

If the controller analyzes the image data photographed by the first camera 310 and determines that the image is defective, the controller stops photographing the second and third cameras 320 and 330 and immediately generates a defective signal and transmits it to the take-out unit 400. do. In this way, it is possible to minimize the delay of the inspection time and the workload caused by unnecessarily photographing the defective electrode body 20 by the second and third cameras 320 and 330. This control method is similarly applied to the second camera 320.

As shown in FIG. 9, the extraction unit 400 is disposed toward the center of the rotation disc 210 along the outer circumference of the rotation disc 210 and selectively operated according to a failure occurrence signal transmitted from the controller. Installed in the ejection cylinders 410 and the rod ends of the ejection cylinders 410, respectively, to eject the electrode body 20 positioned in front of the ejection cylinder 410 while moving back and forth along the cylinder rod during driving; The ejection piece 420 and the electrode body 20 taken out through the ejection piece 420 are formed in the lower portion adjacent to the rotating disc 210 in front of the ejection cylinder 410 to be freely dropped and discharged to the outside. It consists of a blowout hole 430.

The ejection piece 420 pulls the electrode body 20 approaching along the rotational disk 210 in a state where the ejection cylinder 410 is located above the rotational disk 210 to draw out the electrode body. It is formed in the shape of a hook to be made.

In addition, a separate extraction member 450 is installed at the rear of the last extraction cylinder 410 among the extraction cylinders 410 to take out the electrode body 20 that is normally determined. The extraction member 450 has an inner passage 451 formed downward so that the electrode body 20 approaching along the rotation disk 210 naturally enters the rotation disk 210 in a state of being located above the rotation disk 210. To the bottom of the inner passage 451, a discharge hole 460 (see FIG. 3) for discharging the electrode body 20 determined to fall through the inner passage to the outside is connected.

Meanwhile, each of the discharge holes 430 and 460 may be attached to a funnel (not shown) provided with an air suction hose so that the electrode bodies may be smoothly discharged to the outside through the corresponding discharge hole.

In addition, as shown in Figure 10, the front of the take-out portion 400 (between the photographing portion and the take-out portion) is located in the upper portion of the rotating disc 210 and the upper end of the electrode body 20 passing through the lower portion ( A second cylinder 520 may be further provided to correct the top height of the electrode body 20 so that the 420 does not interfere.

The second cylinder 520 is provided with a correction bolt 521 for pressing the upper end of the electrode body 20 when driving the second cylinder 520 to correct the height of the upper end of the electrode body 20. By varying the fastening degree between the correction bolt 521 and the second cylinder 520, the correction height of the electrode body 20 can be adjusted.

The process of inspecting the electrode body using the electrode body inspection apparatus for a cold cathode fluorescent lamp of the present invention configured as described above is as follows.

First, the electrode body 20 is sequentially supplied to the rotating disc 210 through the chute 100 at a predetermined interval. At this time, the electrode body 20 is supplied to the lower end of the chute 100 by the separator 120 in an upright state so that the external lead wire 22 faces downward, the electrode body 20 is a rotating disc 210 Immediately before being supplied to), the lower end of the bead glass 23 of the electrode body 20 is supported on the upper end of the support member 240 positioned at the lower end of the chute 100. In this state, the electrode body 20 and the rotating disc 210 are not in contact with each other. When the sensor 250 installed in the supporting member 240 detects the electrode body 20, the control unit rotates the rotating disc 210. Drive.

Accordingly, the rotation disc 210 rotates in a counterclockwise direction at a constant speed, and the moment when the mounting groove 220 of the rotation disc 210 passes through the electrode body 20 waiting at the end of the chute 100. The electrode body 20 is naturally attached to the mounting groove 220 of the rotating disk 210 while maintaining the upright state by the magnetic force of the magnet 230 provided on the outer surface of the rotating disk 210. This series of operations is performed continuously so that the electrode body 20 sequentially supplied from the chute 100 can be attached to the seating groove 220 of the subsequent rotating disk 210.

As such, since the electrode body 20 is always attached to the seating groove 220 of the rotating disc 210 by magnetic force, it is prevented that physical external force acts on the electrode body 20 and is damaged during the inspection process. .

As described above, the electrode body 20 attached to the seating groove 220 of the rotating disc 210 is moved toward the photographing part 300 disposed in front of the rotating disc 210 in the state and the photographing part 300 is moved. The first cylinder 510 passes through the upper portion of the electrode cylinder 20, and the lower end of the outer lead wire 22 of the electrode body 20 passing through the upper portion is raised to a predetermined height. The height of the electrode body 20 is corrected based on the lower end of the external lead wire 22. In this case, since the electrode body 20 may be set to the correct photographing position before reaching the photographing unit 300, an accurate inspection may be performed.

The electrode bodies 20 whose height is corrected are sequentially photographed while passing through the first to third cameras 330 continuously while being attached to the rotating disc 210. Each camera transmits the captured image data to the control unit at the same time as the shooting, and the control unit overlaps the transmitted image data with the inspection image in which the normal region for each region of the electrode unit 20 is set in advance. Whether or not the electrode body 20 is defective is determined for each part of the electrode body 20 depending on whether the area is out of the area.

According to the present invention, the controller automatically determines whether the electrode body 20 is defective quickly through the captured image data, so that the inspection of the large amount of the electrode body 20 can be performed in a short time.

For example, as a result of photographing the first camera 310, when the photographed electrode position is out of the normal region, the controller transmits a failure occurrence signal corresponding to the defective portion to the extraction unit 400 and at the same time determines the defective electrode body. The photographing of the second camera 320 and the third camera 330 is stopped so that subsequent photographing of the photographing apparatus 20 is not performed. Accordingly, the defective electrode body 20 is transferred to the extraction unit 400 along the rotating disc 210 without undergoing any further inspection process.

On the other hand, when the second cylinder 520 is further provided to correct the top height of the electrode body 20 in front of the extraction unit 400, the second cylinder 520 is located above the rotating disc 210 By correcting the upper end of the electrode body 20 passing through the lower portion to a certain height, the upper end of the electrode body 20 and the extraction piece 420 interferes, the electrode body 20 enters into the opening of the extraction piece 420 As a result, it is possible to prevent the extraction of the defective electrode body 20 from being made.

The electrode bodies 20 passing through the photographing unit are sequentially transferred to the extraction unit 400 along the rotating disc 210. If there is a defective electrode body among the electrode bodies, the controller transmits a failure occurrence signal to the corresponding ejection unit 400 according to the failure occurrence portion, and the corresponding ejection cylinder 410 receives the failure occurrence signal from the controller. Is operated to move the takeout piece 420 to the rotation disc 210 side.

Accordingly, the defective electrode body 20 moving along the rotating disc enters the inside of the takeout piece 420 and is naturally separated from the seating groove 220 of the rotating disc 210 while interfering with the takeout piece 420. do. The detached electrode body 20 is dropped into the blowout hole 430 below and is discharged to the outside.

Accordingly, the ejection cylinder 410 is able to take out the electrode body 20 for each defective portion while operating for each defective portion in accordance with the defective occurrence signal transmitted from the controller.

On the other hand, the normal electrode body 20 is passed through the extraction unit 400 continues to move along the rotating disk 210 to the discharge hole 460 through the inner passage 451 of the subsequent extraction member 450. It is discharged and selectively processed with the electrode body 20 which is determined to be defective.

According to the electrode assembly inspection apparatus for a cold cathode fluorescent lamp according to the present invention configured as described above, whether the camera photographs the main part of the electrode body continuously transferred through the rotation transfer unit and whether the control unit is defective by position In addition, the process of automatically screening and extracting the electrode body determined as defective by the defective part is automatically performed. Therefore, the defect inspection of a large number of electrode bodies can be performed very accurately and quickly. have.

In addition, by attaching a magnet to the outer peripheral surface of the rotating disk constituting the rotational transfer portion, and by the magnetic force to be transported in the state attached to the external lead wire, the electrode body is picked up with a tweezers and put on the work table as in the prior art In the process, the electrode is pressed and damaged by the tweezers to prevent the occurrence of defective products during the electrode body inspection process.

Although the present invention has been illustrated and described in connection with specific embodiments, the present invention may be variously modified and changed without departing from the spirit or the field of the present invention provided by the following utility model registration claims. It should also be included in the scope of the present invention.

Claims (6)

A chute for sequentially supplying the electrode body in an upright state such that the outer lead line faces downward; A rotation transfer unit which attaches the electrode bodies sequentially introduced from the chute to the outer circumferential surface by magnetic force and transfers them to one side; A photographing unit having a plurality of cameras and lighting apparatuses arranged around the rotation conveying unit and photographing a main part of the electrode body conveyed through the rotating conveying unit; A controller which receives the image data photographed from the photographing unit and determines whether the electrode body is defective for each part; And The electrode assembly inspection apparatus for a cold cathode fluorescent lamp, characterized in that it comprises a take-out unit which is selectively operated according to the failure generation signal transmitted from the control unit for taking out the electrode body for each defective portion. The method of claim 1, The rotation transfer unit A rotating disc provided with an outer circumferential surface adjacent to an end of the chute; A plurality of seating grooves vertically formed at regular intervals on an outer circumferential surface of the rotating disc so that external lead wires of the electrode body supplied from the chute are seated; Electrode assembly apparatus for cold cathode fluorescent lamps, characterized in that the magnet is provided in the center portion of the outer peripheral surface of the rotating disc corresponding to each seating groove to attach the outer lead wire of the electrode body to the seating groove. The method of claim 1, The control unit receives the image data photographed from the photographing unit and judges whether the electrode body is defective for each portion of the electrode body in comparison with the inspection image in which the normal region for each portion of the electrode body is set in advance. The electrode assembly inspection apparatus for a cold cathode fluorescent lamp, characterized in that for transmitting a different failure signal according to the position of the failure to the ejection side. The method of claim 1, An apparatus for inspecting cold cathode fluorescent lamps, further comprising a first cylinder for correcting a height of a lower end of an outer lead line of the electrode body passing through the upper portion between the chute and the photographing unit. The method of claim 1, The extraction section Ejection cylinders arranged along the outer circumference of the rotating disc toward the center of the rotating disc and selectively operated according to a failure occurrence signal transmitted from the controller; An ejection piece which is installed at each rod end of the ejection cylinders and ejects the electrode body located forward while moving back and forth along the cylinder rod when the ejection cylinder is driven; The electrode assembly inspection apparatus for a cold cathode fluorescent lamp, characterized in that consisting of a blowout hole formed in the lower portion adjacent to the rotating disc in front of the ejection cylinder so that the electrode body taken out through the extraction piece is freely dropped and discharged to the outside. The method of claim 5, An electrode for a cold cathode fluorescent lamp further comprises a second cylinder positioned at an upper portion of the rotating disc to correct the top height of the electrode body so that the upper end of the electrode body passing through the lower part and the extraction piece do not interfere. Sieve Inspection Device.

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