KR20090072210A - Inspection system for external electrode fluorescent lamp - Google Patents

Abstract

An inspection system for external electrode fluorescent lamp is provided to perform the exact test process by applying a strain viewer film to a camera. The input part(A) supplies the external electrode fluorescent lamp. The rotation feed part(B) rotates the external electrode fluorescent lamp in a specific direction as time passes. The electrical field measuring unit measures the total length of the external electrode fluorescent lamp. The pickup part(C) takes a picture of the main part of the external electrode fluorescent lamp to transfer picture data. The extraction portion(D) mounts the external electrode fluorescent lamp by determining whether the external electrode fluorescent lamp is bad or not.

Description

Inspection system for external electrode fluorescent lamp {Inspection System for External Electrode Fluorescent Lamp}

The present invention relates to a series of devices configured to quickly and accurately inspect the failure of the external electrode fluorescent lamp by an automated system, and more specifically, both ends of the main portion of the external electrode fluorescent lamp for general inspection camera and strain viewer filter ( After each shot with a camera equipped with a strain viewer filter), the captured image is sent to a predetermined monitor, and the computer automatically determines whether the fluorescent lamp is defective through image analysis. The external electrode is fixed to a predetermined profile at equal intervals on an upper side of the timing belt which is driven so that the above-described series of operations can be implemented by a pair of timing belts that proceed in a predetermined direction over time. The present invention relates to a device in which fluorescent lamps can be individually input sequentially.

In general, a fluorescent lamp used for a backlight of a liquid crystal display device includes a Cold Cathode Fluorescent Lamp (CCFL) in which the electrode is located inside the glass tube and an external electrode fluorescent lamp in which the electrode is located outside the glass tube. (External Electrode Fluorescent Lamp; EEFL).

The external electrode fluorescent lamp (EEFL) is injected into a glass tube by injecting a mixed gas containing a small amount of mercury into a filling gas consisting of neon and argon, and then sealing the external electrode by installing an external electrode on both ends of the glass tube. By capacitive coupling, particles are accumulated at both ends of the glass tube, so that an alternating current discharge is used in which a plasma current flows alternately in the discharge tube.

Therefore, the external electrode fluorescent lamp (EEFL) has a long life naturally because the electrode is not in direct contact with the plasma, and the production of the lamp is simple because there is no electrode inside, which can be modified in various forms. Do. In addition, since a plurality of lamps can be connected and driven in parallel, power consumption is low and the brightness is uniform. In other words, unlike the cold cathode fluorescent lamp, the external electrode fluorescent lamp (EEFL) has the advantage of being able to be connected in parallel to reduce the number of inverters, and it is not environmentally friendly because soldering is not performed, and the assembly structure is very high. It will be simple and suitable for solving problems such as low cost and long life, which are problems of the liquid crystal display device.

On the other hand, when the manufacturing process of the external electrode fluorescent lamp (EEFL) is outlined, the glass tube coated with the fluorescent material is heated by a torch to pull the heated spot to both sides to shrink and seal the diameter, and the other side by the same method. The inside of the glass tube was vacuumed by mercury and gas injection pipes on one side with the exhaust pipe while shrinking the diameter, and then mercury (Hg), neon (Ne) gas, and argon (Ar) gas were injected, and the diameter was minimized. After sealing while heating, it is a method to manufacture by coating a conductor on both sides.

The EEFL implemented in the above-described manner is required to perform a separate inspection process before it is shipped to the finished product due to the mass production of a problem in which the body is not fully functional or the life is significantly reduced if there are minute defects, cracks, or scratches on the body. It goes through.

Therefore, in the past, the worker was able to determine whether the lamp was cracked or scratched by time and shipped it as a finished product only when it was good.However, since the main part of the lamp is very small and minute, it is accurate to determine the defect based only on the operator's vision. In addition, it is almost impossible to visually identify cracks generated on the inner surface of the fusion surface, and it is pointed out that the time required for inspection work and the manpower increase due to this are uneconomical.

In addition, in recent years, a method of checking for defects through a magnifying glass or a microscope is commonly used, but in addition to the inconvenience of having to manually place a lamp on a work table in order to observe a large number of lamps individually, the lamps are placed on the work table. Is often damaged, and this must also be determined directly by the operator's naked eye, which not only reduces work efficiency. have.

The present invention has been made in order to actively solve the above problems, and the manpower required for the inspection by automating the inspection method that was made by hand manually so that the inspection of the defect of the external electrode fluorescent lamp (EEFL) can be made quickly and accurately The external electrode fluorescent lamp is composed of a plurality of cameras equipped with a strain viewer filter so that time can be greatly reduced and more precise inspection work can be performed, so that even cracks generated inside the fluorescent lamp can be accurately displayed on the camera image. It is an object of the present invention to provide an inspection device.

In order to achieve the above object, the present invention, an input unit for sequentially supplying each of the external electrode fluorescent lamps (EEFL) completed through a separate process; and the EEFL supplied from the input unit is received over time The rotation belt is formed by arranging a plurality of profiles so that the EEFL is fixedly mounted on the upper side of the timing belt, while allowing the timing belt circulating in one direction to be continuously carried out. A full length measuring unit for measuring the total length of the EEFL that is automatically arranged; and a photographing unit that photographs the main part of the EEFL that is automatically arranged through the rotation transfer unit and checks the image through a computer monitor; and the photographing unit On the basis of the data transmitted from the electric field measuring unit, it is possible to determine whether the EEFL is defective or to control the above-described series of processes as a whole. Control unit; And a take-out unit which automatically analyzes the images and measurement records transmitted through the control unit to automatically determine whether the EEFL is defective, and then separates and discharges the EEFL screened as defective by separately collecting it. have.

According to the present invention embodied as described above, after measuring the overall length of the EEFL continuously supplied through the rotational transfer unit, the main part of the lamp is photographed by the camera, the control unit is based on the image data taken by the controller is defective In addition to automatic determination of the status by location, a series of processes to select and take out the EEFL which is determined to be defective by a separate collection are automatically performed. Therefore, defect inspection of a large number of EEFL can be performed more accurately and quickly. This can save a lot of time.

In addition, compared with the recent inspection of the main part of the fluorescent lamp by using the camera, the strain viewer film is inserted into the camera so that even the cracks generated inside the EEFL welding surface can be accurately captured from the level of simply inspecting the outside defect of the EEFL. By applying it, it is possible to perform precise inspection work by visually confirming the refraction of light by color spectrum.

Hereinafter, the configuration of the present invention in detail with reference to the accompanying drawings as follows.

First, referring to the drawings, FIG. 1 is a configuration diagram of an EEFL inspection apparatus constructed in accordance with a preferred embodiment of the present invention, and FIG. 2 is a configuration diagram illustrating a front surface of an EEFL inspection apparatus constructed in accordance with a preferred embodiment of the present invention. 3 is a schematic view showing an extract of an input portion which is an essential part of the present invention, and FIG. 4 (a) (b) (c) (d) shows that the input portion of the present invention acts substantially so that the EEFL is sequentially Figure 5 (a) (b) (c) (d) is a state diagram showing the process of supplying the EEFL to the rotational transfer unit through the input of the present invention, Figure 6 (a ) (b) (c) is another state diagram showing the process of supplying the EEFL to the rotational transfer unit through the input of the present invention, Figure 7 (a) (b) is another main part of the electric field measuring unit Figure 8 is a schematic diagram showing the configuration, Figure 8 (a) (b) is a preferred embodiment of the present invention Figure 9 is a configuration diagram showing a process of capturing the image of the EEFL through the configuration of the photographing unit and the configuration of the photographing unit, Figure 9 is a state diagram schematically showing that the EEFL is rotated by extracting the photographing unit of the present invention, Figure 10 is 11 is a plan view showing an extraction unit which is another main part of the present invention, and FIG. 12 is a block diagram showing that the width of the inspection device according to the present invention can be adjusted. 13 is an exemplary view showing a crack inspection structure inside the EEFL fusion surface employing a strain viewer, Figure 14 is an exemplary view showing a color pattern of the crack when using a strain viewer, Figure 15 is applied to the present invention It is an example figure which shows EEFL.

The present invention significantly reduces the manpower and time required for inspection by automating inspection methods conventionally performed by hand so that defect inspection of external electrode fluorescent lamps (EEFL) can be made quickly and accurately, and more precise inspection work is performed. Note that it is related to a device having a plurality of cameras equipped with a strain viewer filter so that even cracks generated inside the fluorescent lamp can be displayed on the camera image.

As shown in the accompanying drawings, the present invention includes an input unit A for largely supplying the EEFL 11 sequentially; and a rotation transfer unit B that rotates in one direction over time as the EEFLs are individually mounted. ;, And a full-length measuring unit (M) for measuring the overall length of the EEFL; and a photographing unit (C) for photographing the main part of the EEFL and transmitting image data; and, depending on whether the EEFL is good or bad Taking out part (D); And a control unit (E) for automatically determining whether or not the EEFL is defective by automatically determining the image data transmitted from the photographing unit and integrating the system of the entire apparatus.

The input portion (A) is a space in which the EEFL 11 completed through a separate process can be put into the device, the configuration is the slide piece 22 associated with the cylinder 50 and the cylinder rod 60 And the slide piece can be driven back and forth within a predetermined range according to the cylinder drive, and the first stopper 20 and the second stopper 21 are provided respectively so that the EEFLs can be sequentially supplied one by one through their interaction. As shown in FIG. 3, the input part further includes a first plate 16 driven laterally at both ends thereof so that the EEFL can be aligned from the center. The configuration of the injection unit A is shown in detail in Figures 3 to 5 (a) (b) (c) (d).

On the bottom surface of the inner space of the slide piece 22, a feed belt 23 is formed to rotate at a constant speed to adjust the feeding speed of the EEFL 11, and the first stopper 20 and the second stopper 21 are cylinders. When the first stopper 20 is disposed downward, the second stopper 21 is upwardly disposed. On the contrary, when the first stopper 20 is upwardly disposed, the first stopper 20 is upwardly disposed. The two stoppers 21 are disposed downward. That is, these cross motions must be made instantaneously, and the first stopper and the second stopper can be moved up and down at the same speed so that the EEFLs staying in the inner space of the slide piece can be supplied one at a time. The EEFL is stopped by the predetermined fixing piece 19.

5 (a) (b) (c) (d) illustrate the process in which the EEFL located in the fixing piece 19 is disposed in the rotation transfer part B, which will be described later, and FIG. 6 (a) ( b) a circulation support 27 which is driven back and forth by the action of another cylinder 51 in the space between the main timing belts 24 arranged so as to face each other as shown in (c); and the cylinder 52 and the cylinder rod ( 62); and, the support piece 26; and the first and second moving bases 28 and 29;

The circulation support 27 performs the same movement according to the relaxation and contraction movements implemented by the cylinder 51, and the plurality of cylinders 52 and the support pieces 26 formed integrally on the upper side of the circulation support are supported by a moving base ( 28 and 29, while the cylinder associated with the circulating support allows the movable bases 28 and 29 to be automatically placed below the EEFL located in the stationary piece 19 so that the synergistic action of the cylinder moves the EEFL. It was able to lift in the state accommodated in. However, the plurality of cylinders 52 formed on the circulation support 27 are moved up and down at a predetermined time interval so that the first moving base 28 and the second moving base 29 do not simultaneously rise. After the moving base 28 is raised, the circulation support 27 slightly moves toward the main tie belt 24 as it is. As a result, the second moving base 29 is supplied with another EEFL. It is located on the lower side, while the cylinder 52 of the second moving stand 29 is raised while lifting the EEFL, it moves slightly toward the main timing belt 24 again. After completing the above-described operation, the cylinder rod 62 is in a state where the first and second moving cradles are accommodated in the first and second moving cradles, respectively, and the first and second moving cradles are mounted on the main timing belt. The EEFL is placed in the same profile as the cylinders of the first and second moving bases are lowered at the same time as the cylinders of the first and second moving platforms are simultaneously lowered. When the process is completed, the cylinder 51 again extends the rod to place the circulation support at the initial position, and these processes are repeated again, so that the EEFL 11 is sequentially supplied.

The rotation transfer part (B) is a component that accommodates the EEFL in an independent space and rotates in one direction, as shown in FIGS. 1 and 6 (a) (b) (c). The rotational transfer unit uses a main timing belt 24 formed by attaching a plurality of profiles 25 at equal intervals, and uses an index unit (INDEX UNIT, 18) to maintain a constant amount of transfer of the profile.

1, the main timing belt 24 is repeatedly rotated by means of a pair of circulation rollers 15 spaced apart by a considerable distance. The movement is configured such that the circulation roller and the peristaltic valve are connected by another belt (not shown) so that the rotational force originating from the predetermined drive motor 13 can be transmitted to the circulation roller 15 through the peristaltic valve 14. In order to constantly transport the EEFL over time, it is preferable to use the index unit 18 which is known in the art. Since the index unit 18 is a well-known technique, a detailed description thereof will be omitted.

The rotation transfer part (B) has a pair of main timing belts (24) to face each other to perform a desired operation, and the plurality of main timing belts (24) above each of the plurality of profiles (25) In addition, the profiles of the main timing belts are also formed at mutually opposing positions such that the pair of profiles facing each other becomes a space for accommodating one EEFL 11. That is, as shown in FIG. 6 (c), the EEFLs traveling on the first and second movement platforms 28 and 29 stop at the upper side of the main timing belt, respectively, and then one EEFL is correctly engaged with the pair of profile grooves. By being configured to be accommodated, the EEFL seated in the profile is driven in one direction with the main timing belt.

The electric field measuring unit M implements the same movement as the first plate 16 of the input unit A described above, and the contact unit 30 is formed on the outer surface of the second plate 17 in contact with the EEFL. Characterized in that is further configured. As shown in FIG. 9 (a) and (b), when the EEFL 11 supplied from the input unit and transported on the main timing belt is positioned in the space between the second plates 17 facing each other, the cylinder 53 is placed on the cylinder 53. By measuring the length of the EEFL while the second plate is moved inward by a predetermined distance, a predetermined sense (not shown) is attached to the contact portion 30 to determine whether the length is poor depending on whether the EEFL is in contact. To screen. The electric field measuring unit is a test step performed before the EEFL entering the photographing unit through the input unit, and reference numeral M shown in FIG. 10 corresponds to the electric field measuring unit.

The photographing unit (C) is a main portion for checking not only the surface image of the EEFL but also cracks generated on the inner fusion surface, and includes a general inspection camera and a strain viewer filter at a predetermined position above the main timing belt. A number of cameras are arranged to precisely capture the moving EEFL. In the present invention, the photographing unit is divided into a first camera 31 and a second camera 32 for easier understanding and explanation. Preferably, the photographing unit includes a plurality of photographing units.

The photographing unit (C) comprises a first camera for observing the shape or foreign matter of the EEFL; and a second camera equipped with a strain viewer filter; and a separate image to rotate the conveyed EEFL up and down Lower belts 33 and 34; cylinder 54; and support 37; And a lamp receiving tool 35.

Traditionally, strain viewers have been used as a tool for inspecting stress patterns on glass or plastic end products, which express the degree of stress in color spectrum as the amount of refraction of light passing through the medium. The tool is designed to be visually identified. The biggest advantage of this strain viewer is that if the crack occurs inside the fusion surface of the EEFL, the vision test using the general transmission method does not show the symptoms well on the camera image. The crack generated inside the fusion surface changes the refractive index of the light passing through the light source installed below, so the camera appears as a color image pattern more complex than normal color. By analyzing, the presence of cracks can be recognized.

The apparatus of the present invention is configured such that the strain viewer film can be mounted on the second camera 32 so as to inspect cracks and stresses inside the EEFL weld surface, as shown in FIGS. 13 and 14.

On the other hand, the external electrode fluorescent lamp (EEFL, 11) to which the present invention is applied is a narrow glass tube coated with a fluorescent material by heating with a torch to pull the heated spot to both sides to shrink and seal the diameter, and the other side to the same method. By shrinking the diameter by the mercury and gas inlet pipe on one side with the exhaust pipe to vacuum the inside of the glass tube, injecting mercury (Hg), neon (Ne) gas, argon (Ar) gas, and minimized diameter After sealing while heating the point, the outer surface of the conductor is coated with a coating, which is usually produced in various forms. That is, the main part of the EEFL has both ends, and when looking at the shape, one side is in the form of a tap (hereinafter, referred to as 'ga' for convenience), and the other side is a rounded concave shape (hereinafter, 'b for convenience'). It is obvious that the defect rate tends to be higher during manufacturing because the 'A' part of the EEFL requires more precise work than the 'I' part due to its characteristics. The EEFL is exemplarily illustrated in FIG. 15, and photographing the standard and the image pattern of the EEFL by using the inspection apparatus of the present invention is as follows.

<Defective item-ship form>

<Defective item-Poor ratio of the center of the faucet>

<Defective item-Poor bubble>

<Defective item-Crack inside the fusion surface>

<Defective item-Inner stress on fusion surface>

Therefore, in the present invention, in order to precisely inspect both ends of the EEFL, a plurality of first cameras (as shown in FIGS. 8 (a) and 8 (b)) is located above the main timing belt 24 where one end (a) moves. 31) and a plurality of second cameras 32, and a plurality of first cameras 31 were provided above the main timing belt to which the other end (b) moved. The overall configuration is described in detail with reference to FIG.

Reference numerals H and H 'of FIG. 10 are photographing units for photographing one side' ga 'portion of the aforementioned EEFL, while H is a first camera and a backlight, and H' is a second camera and a backlight. K described on the other side is a photographing unit that inspects the EEFL 'I' side, and is also composed of a first camera and a backlight. However, if necessary, the second camera and the backlight may be configured at the point K ′ of FIG. 10 to perform more accurate inspection. Here, the backlight is provided below the point where the end of the EEFL is positioned to serve as a light source for the first and second cameras by irradiating light toward the EEFL.

The EEFL entering the photographing unit stops for a moment below the first and second cameras 31 and 32 as the index unit is driven as shown in FIG. 8 (a), and then raises the EEFL as shown in FIG. 8 (b). 54 is provided, and the support body 37 in which the lamp accommodation tool 35 was integrally attached to the rod of the air cylinder is fixed.

Each of the outer space of the main timing belt 24 constitutes a separate upper belt 33 and a lower belt 34 for rotating the rollers on both sides by means of a stepping motor (not shown), but the upper belt 33 ) Is always fixed to maintain the home position, and the lower belt 34 is configured to be driven up and down by the air cylinder so that the lower belt is raised with the cylinder as the EEFL (11) located in the shooting section is raised together. do. At this time, the EEFL is raised along with the upper belt is fixed in the state of being located on the central axis of the lamp receiver 35 fixed to the support 37, and then fixed to the upper belt, the upper belt and the lower belt is rotated, respectively, also sandwiched between them It will be rotated as shown in FIG.

The lamp receiver 35 is configured in the same shape as shown in consideration of the function to prevent the left and right deviation when the EEFL rotates, the first and second cameras to rotate in place based on the lamp receiver Accurate testing of the EEFL ensures accurate testing. The image and image data photographed by the photographing unit are transmitted to the controller E to determine whether the product is defective.

The controller E is a part for comprehensively analyzing both the EEFL length and the surface image and the inner image of both ends transmitted from each camera or the electric field measuring unit M, and determining whether the product is defective or not, and displaying the image. It consists of a monitor 12 and a processor such as a computer for analyzing the image.

When the EEFL is determined to be defective as shown in FIG. 11 based on the analysis of the control unit, the extraction unit D plays a role of separately loading the defective EEFL by driving the extraction device in which the forceps 39 are formed, and once the defective EEFL is taken out. When entering the cylinder 55 is operated to drop the forceps 39, the falling forceps near the EEFL to allow the EEFL to be mounted naturally by narrowing the width of the entrance of the forceps, then the forceps to the EEFL Ascending in the caught state and laterally moved to the collection box 38 provided on the outside of the device, and changes the inlet to the original state again to drop the corresponding EEFL in the collection box.

As such, if the product result of the EEFL is bad, the cylinder 55 is sorted and discharged to the upper part where the collection box 38 is formed, and if it is good, it is configured to be discharged to the lower part as shown in the drawing to be introduced into the mercury diffusion furnace (not shown). To help.

12 is a configuration showing that the width of the inspection apparatus of the present invention can be freely adjusted in some cases, the width can be easily adjusted by the operation of the handle 40 formed on the outside of the device. That is, when the handle 40 rotates in one direction, the ball screw 42 coupled to both bearings 41 also rotates itself, and the shaft 44 integrally formed through the bush 43 is shown in the drawing by the rotation of the ball screw. It is possible to move in one direction, and as a result, one side of the device can be moved to implement an inspection device suitable for EEFL manufactured in various lengths.

Hereinafter, the operation and use of the present invention will be described in accordance with the step-by-step working process as follows.

[Step 1-Input Section]

This step is a process of supplying the first EEFL to the device to check whether the EEFL is defective. The input unit A is individually supplied to the rotary transfer unit B by using the first and second moving bases 28 and 29 to sequentially supply the EEFLs supplied by the interaction of the first and second stoppers 20 and 21. While being supplied, the EEFL 11 is aligned side by side by the slide piece 22 before being fed to the conveying belt 23, and is captured by the first plate 16 from the center.

[Step 2-Rotating Transfer Unit]

The step is composed of a series of devices for transferring the EEFL through the input unit to the imaging unit. The rotation transfer part (B) has a plurality of main timing belts (24) installed to face each other and a plurality of profiles (25) above the main timing belt so that the EEFL can be separately received from other lamps. In addition, it is preferable to use the index unit 18 to make the transfer amount of the profile constant, and the EEFL proceeds in one direction over time as it is accommodated in the rotary transfer unit until discharged through all the inspection processes.

In addition, when the EEFL is transferred to the rotation transfer unit, the EEFL includes a process of measuring the entire length of the EEFL while selecting the defect by passing through the electric field measuring unit (M).

[Step 3-Shooting Department]

The step is a process of determining the appearance as well as the inner crack by photographing both ends of the EEFL. The photographing unit (C) is a step of inspecting both end portions of the EEFL by using a first camera 31 made of a general inspection camera and a second camera 32 equipped with a strain viewer film. In order to raise the lamp receiver 35 associated with the air cylinder 54 together with the lower belt 34 is configured to interact with the upper belt 33 is fixedly positioned to rotate the EEFL.

[Step 4-Drawer]

The above step is a process of separating and discharging the EEFL according to the situation indicated by the controller E based on the data of the previous photographing unit and the electric field measuring unit. When the ejection unit (D) determines that the EEFL is inferior as a result of the product inspection, the cylinder 55 is sorted and separately placed in the collection box 38 located on the upper side. Allow for input.

This completes all inspection procedures.

Based on the above steps, the practical use process of the apparatus will be described sequentially as follows.

Figure 4 (a) (b) (c) (d) shows in detail the step-by-step supply process of the EEFL. First, FIG. 4 (a) shows that the EEFL which is naturally moved to the input space inclined at a predetermined angle may be stacked in some cases. In this case, as shown in FIG. 4 (b), the cylinder 50 is driven. As the rod 60 is disposed backward, the slide piece 22 is retracted, and the EEFL nested in multiple stages by the retracting slide piece is unfolded side by side. On the other hand, in the inner space of the slide piece is provided with a conveying belt 23 on the bottom surface to adjust the feeding speed of the EEFL, the EEFL reaching the inner space of the slide piece by the conveying belt to the first stopper 20 When the predetermined time passes, as shown in FIG. 4 (d), the first stopper rises and the second stopper 21 descends to allow the EEFL to be sequentially supplied. Thereafter, while the first stopper 20 is lowered again, the second stopper 21 is raised and restored to the state as shown in FIG.

The EEFL, which has exited the stopper through the above process, is rolled down to be caught by the fixing piece 19. As shown in (a) of FIG. Repeat the transfer to the sending profile.

Meanwhile, as shown in FIG. 3, the input unit A further includes a first plate 16 driven laterally at both ends thereof so that the EEFL can be aligned from the center.

The EEFL supplied to the rotation transfer part B by means of the first and second moving bases 28 and 29 is one by one in the same manner as in FIGS. 5 (a) (b) (c) (d). Is located in the profile 25, the main timing belt is driven and moved slightly to one side EEFL whether the length is bad through the electric field measuring portion (M) consisting of the second plate 17 and the contact portion 30 Will be judged.

After passing through the electric field measuring unit again, the main timing belt 24 moves in one direction to enter the photographing unit C. At this time, the lower belt 34 and the lamp receiving device 35 formed on the outside of the main timing belt, respectively. The EEFL placed on the profile is raised, and the EEFL placed in the rising position is maintained by being engaged by another upper belt 33 so that the EEFL rotates in place as the upper and lower belts rotate.

In the process of rotating the EEFL, the first camera 31 photographs both sides of the EEFL to determine the appearance, shape, dimensions, and foreign matter of the EEFL, and then lowers the lamp receiver 35 by driving the cylinder 54. The EEFL on the profile, then move and raise the EEFL again with the lamp receptacle. The elevated EEFL rotates itself as in the first camera described above. At this time, the second camera 32 equipped with the strain viewer film captures the fusion surface to identify the color image pattern according to the refractive index of the light to detect the presence of cracks. You can judge.

This characteristic perfectly complements the problem that cracks occurring inside the fusion plane cannot be detected by a general transmission test method, and cracks generated inside the fusion plane refract the light irradiated from the backlight. ), And used the characteristic that complex color images appear more than normal colors. Accordingly, the color image may be visually confirmed through the monitor 12, and a processor such as a computer may detect the color image to determine whether the color image is defective.

As a result, one EEFL 11 not only checks the appearance of the first camera 31 and the second camera 32 detects defects missed by the first camera, but also examines the internal shape of the EEFL. Can be done.

The image data transmitted from the photographing unit C are transmitted to the controller E, and the controller grasps the surface image and the internal image of the transmitted EEFL and selectively drives the extraction unit D according to the final defect. .

The discharge part D is separated and discharged into a collection box 38 formed at a predetermined position using the forceps 39 in the same manner as in FIG. The inspection process is terminated by transferring the mercury to the mercury diffusion furnace.

On the other hand, Figure 12 is configured to inspect the EEFL of various lengths by adjusting the width of the inspection device only by the operation of the handle 40, all of one side of the inspection device connected to the shaft 44 is moved as shown in the figure The position can be changed by riding the guide 36.

Although the present invention having the above-described configuration has been shown and described with reference to specific embodiments, the embodiments of the present invention are merely configured for the sake of understanding, and are merely one embodiment applicable to the present invention. The scope of the right is not limited to the above-described embodiment.

1 is a block diagram of an EEFL inspection apparatus constructed in accordance with a preferred embodiment of the present invention.

Figure 2 is a block diagram showing the front of the EEFL inspection apparatus constructed in accordance with a preferred embodiment of the present invention.

Figure 3 is a schematic diagram showing the extraction of the input portion to be the main part of the present invention.

Figure 4 (a) (b) (c) (d) is a state diagram schematically showing that the input of the present invention substantially acts to supply the EEFL sequentially.

Figure 5 (a) (b) (c) (d) is a state diagram showing the process of supplying the EEFL to the rotary feeder through the input of the present invention.

Figure 6 (a) (b) (c) is another use state showing the process of supplying the EEFL to the rotary feeder through the input of the present invention.

Figure 7 (a) (b) is a schematic diagram showing the configuration of an electric field measuring unit which is another main part of the present invention.

Figure 8 (a) (b) is a configuration diagram showing a process of capturing the image of the EEFL through the configuration of the photographing unit and the photographing unit configured in accordance with a preferred embodiment of the present invention.

9 is a use state diagram schematically showing that the EEFL is rotated by extracting the photographing unit of the present invention.

Figure 10 is a flat side of the EEFL inspection apparatus constructed in accordance with a preferred embodiment of the present invention.

11 is a block diagram showing a takeout part which is still another main part of the present invention.

Figure 12 is a block diagram showing that it can adjust the width of the inspection device of the present invention.

FIG. 13 is an exemplary view showing a crack inspection structure inside an EEFL welding surface employing a strain viewer. FIG.

14 is an exemplary view showing a color pattern of a crack when using a strain viewer.

15 is an exemplary view showing an EEFL to which the present invention is applied.

* Description of the symbols for the main parts of the drawings *

11.EEFL 12.Monitor

13. Drive motor 14. Peristaltic valve

15. Circulating Roller 16. First Plate

17. Second Plate 18. Index Unit

19. Fixed piece 20. First stopper

21. Second stopper 22. Slide piece

23. Transfer belt 24. Main timing belt

25. Profile 26. Base

27. Circular support 28. First mobile support

29. 2nd moving base 30. Contact unit

31. First Camera 32. Second Camera

33. Upper belt 34. Lower belt

35. Lamp holder 36. Moving guide

37. Support 38. Collection

39. Forceps 40. Handle

41.Bearings 42.Ballscrews

43. Bush 44. Shaft

A. Input part B. Rotating feed part

C. Shooting D. Blowing Out

E. Control

H. (A) First camera and backlight

H '. (A) Second camera and backlight

K. (B) side first camera and backlight

K '. (B) Second camera and backlight

M. Electric Field Measurement Unit

Claims (8)

An input unit for sequentially supplying external electrode fluorescent lamps (EEFLs) one by one; and a rotation transfer unit which rotates the EEFL supplied from the input unit in one direction using a main timing belt so that a continuous transfer operation can be performed; And, a full length measuring unit for measuring the total length of the EEFL is automatically arranged through the rotational transfer unit; And to shoot both ends of the EEFL automatically arranged through the rotational transfer unit to check the image taken through the monitor A photographing unit comprising a first camera photographing the surface image of the EEFL and a second camera photographing the presence or absence of cracks inside the fusion surface of the EEFL; and a defect of the EEFL based on data transmitted from the photographing unit and the electric field measuring unit. A control unit for determining whether or not, as well as the overall system of the device; And an extraction unit for separating and discharging the EEFL selected as defective through the control unit as a separate collection unit. The method of claim 1, The photographing unit includes a plurality of first cameras; and a plurality of second cameras, wherein the second camera is further equipped with a strain viewer film so as to photograph the cracks generated inside the EEFL welding surface. Inspection device for external electrode fluorescent lamps. The method of claim 1, The inserting portion is provided with a slide piece 22 associated with the cylinder 50 and the cylinder rod 60 so that the slide piece can be driven back and forth within a predetermined range according to the cylinder driving, and the first stopper 20 ) And the second stopper 21 so that the EEFLs can be sequentially supplied one by one as the first and second stoppers cross and move up and down momentarily, while the first plate 16 driving in the horizontal direction is further formed. Inspection device for an external electrode fluorescent lamp characterized in that the configuration so that the EEFL can be aligned side by side from the center. The method of claim 1, The main timing belt of the rotary transfer unit is arranged in a plurality of opposing, the external electrode fluorescent lamp characterized in that it is configured to accommodate the EEFL by mounting a plurality of grooves formed at equal intervals on the upper side of the main timing belt Device. The method of claim 1, A circulation support 27 in an inner space between the main timing belts of the rotational transfer part; Cylinder 52 and cylinder rod 62; Base piece 26; The first and second moving stages 28 and 29; are integrally formed to reciprocate back and forth by the action of the cylinder 51, and the first and second moving stages are sequentially raised and simultaneously driven by another cylinder 52. Inspection device for an external electrode fluorescent lamp characterized in that it is configured to move each of the EEFL located in the input unit to the profile of the rotary transfer unit while descending. The method of claim 1, The electric field measuring unit forms a second plate 17 and a contact portion 30 at positions engaged with both ends of the EEFL, and the second plate is reciprocally driven by the cylinder 53 to the inner space by a predetermined distance. And measuring a length of the contact part, and attaching a predetermined sense to the contact unit, wherein the device is configured to sort out whether the length is bad or not depending on whether the EEFL contacts. The method of claim 1, An air cylinder 54 in an outer space of the main timing belt adjacent to the photographing unit; The support belt 37 and the lamp receiver 35 are integrally formed so that the support and the lamp receiver can be raised and lowered by the air cylinder 54, and the upper belt 33 rotates through the stepping motor. ) And the lower belt 34, the upper belt 33 is fixed to maintain a constant position at all times, the lower belt 34 is to be raised and lowered together with the support and the lamp receiver located above the lower belt. Inspection device for external electrode fluorescent lamps, characterized by the configuration to increase the EEFL. The method of claim 1, The EEFL is raised along with the upper belt in the state of being located on the central axis of the lamp receiver 35 fixed to the support 37 to be fixed to the upper belt. Inspection device for an external electrode fluorescent lamp, characterized in that the configuration.

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