KR20090074424A - Inspection system for external electrode fluorescent lamp - Google Patents

Abstract

An inspection apparatus for automating defect inspection of an EEFL(External Electrode Fluorescent Lamp) is provided to detect the defect of the EEFL by using a plurality of cameras with strain viewer filters. A vibrator includes a second receiving piece, a fixing plate(15), first and second support plates(17,18), a rotator, a cylinder, a plurality of guides and a vibrator. A second receiving piece receives a plurality of fluorescent lamps. The fixing plate prevents the separation of a plurality of fluorescent lamps from the second receiving piece. A first support plate supports the second receiving piece. The rotator induces the incline of the second receiving piece to a required direction. The cylinder implements the movement of a first support plate. The second support plate move up and down by a cylinder and a cylinder rod. A plurality of guides are arranged in the position adjacent to both sides of the cylinder. The vibrator implements repetitive vibration in the lower part of the second receiving piece.

Description

Inspection System for External Electrode Fluorescent Lamp with Vertical Vibrator

The present invention relates to an inspection device for an external electrode fluorescent lamp (EEFL), and more particularly, to the input unit of the inspection device to easily determine whether or not glass fragments or foreign matter, etc. are contained in the interior space of the EEFL glass tube. The external device equipped with a vertical vibrator to check the contents located inside the EEFL by tilting the EEFL to one side while passing through a separate supply part, vibrating part, and input part before the EEFL is introduced into the device. An inspection apparatus for electrode fluorescent lamps.

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 composed of neon and argon into a glass tube, and then installing an external electrode on the outside of the glass tube wall. By capacitive coupling, particles accumulate at both ends of the glass tube, and an alternating current type 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 system to manufacture by coating a conductor on both outer sides.

The EEFL implemented in the above-described manner will produce a problem in that it will not be fully functional when the body has microscopic defects, cracks or scratches, or the life will be significantly reduced. It is essential.

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.

On the other hand, as described above, the EEFL made of a predetermined glass tube may be broken glass fragments, debris, foreign matters, etc. in the inner space during manufacturing, if the inappropriate content is located inside the EEFL is not easily found through the inspection device. There is a big problem.

The present invention has been made in order to solve the above problems, to automate the inspection method that was made by the manual manual so that the inspection of the defect of the external electrode fluorescent lamp (EEFL) can be made quickly and accurately to reduce the manpower and time required for the inspection It is equipped with a plurality of cameras equipped with a strain viewer filter to drastically reduce and perform more precise inspection work, 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 apparatus for an external electrode fluorescent lamp equipped with a vertical vibrator configured to easily determine whether or not inappropriate contents such as glass fragments or foreign substances are contained in the inner space.

In order to achieve the above object, the present invention, the supply unit is configured to supply an appropriate amount of EEFL while driving the stopper is formed integrally with a predetermined cylinder to implement repetitive movement by the cylinder up and down; and the supply unit It is configured to move up and down by the action of the cylinder in a state that accommodates a large number of EEFL transferred from the second accommodation piece, the second accommodation piece has a first support plate fixedly coupled to another cylinder at one lower end Formed to be inclined according to the up and down driving of the cylinder, and further comprising a vibrator on the other lower end of the second accommodation piece; and the EEFL transferred from the vibrating unit can be sequentially supplied to the device It is made of a third receiving piece connected to the cylinder so as to repeatedly drive up and down; have.

According to the present invention having the above-described configuration, it is possible to determine the presence or absence of broken glass fragments, fragments, foreign matters, etc. in the inner space during the manufacture of the EEFL has the effect of minimizing the defective rate of the product.

In addition, after measuring the overall length of the EEFL continuously supplied through the rotation transfer unit, the camera captures the main part of the lamp, and the control unit automatically determines whether the EEFL is defective by location based on the captured image data Since a series of processes for screening out the EEFL, which is determined to be a defective part by a separate collection, are automatically performed, there is an advantage in that the inspection of a large number of EEFLs can be performed more accurately and quickly, thereby greatly reducing manpower and time. .

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 that can mount a vibrator so that the contents existing in the fluorescent lamp space can be pushed to one end and captured in the camera image.

On the other hand, the present invention is to complement the 'external electrode fluorescent lamp inspection apparatus' of the application No. 10-2007-0140255 previously filed by the same applicant, in particular to improve the input portion of the pre-examined inspection apparatus to implement a more accurate inspection Emphasize that it is designed to be possible.

Hereinafter, in the present invention, a detailed description of the inspection apparatus will be omitted, and the configuration of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram of an inspection apparatus for an external electrode fluorescent lamp including the main part of the present invention, Figure 2 (a) (b) is an example of a state in which the supply portion (a) of Figure 1 enlarged and driven up and down 3 (a) and 3 (b) are side views showing a state in which the vibration part (b) of FIG. 2 is extracted and driven up and down by way of example, and FIGS. 4 (a) (b) and (c) are examples. ) Is a block diagram schematically illustrating a process of the vibration unit, which is the main part of the present invention, step by step, and Figure 5 (a) (b) is an exemplary state of driving up and down by extracting and expanding the input unit (c) of FIG. It is a schematic diagram shown.

The present invention provides a supply unit (A) as shown in FIG. Vibration part (b); It is configured to be divided into the input unit (c), so that a large amount of EEFL (13) can be sequentially input.

The supply part (a) is the first point at which the completed EEFL moves to the inspection apparatus of the present invention, and the predetermined cylinder 30 and the cylinder rod ( 41), the stopper 11 integrally combined with this, and the 1st accommodation piece 10 comprised inclined at a predetermined angle.

The stopper 11 loads and accommodates a large amount of EEFL in the first accommodation piece 10 while staying in the standby state as shown in FIG. The stopper 11 can be arranged to be lowered. FIG. 2 (b) shows that the plurality of EEFLs 13 blocked by the stopper can move to the second accommodation piece 14 as the stopper 11 is disposed downward by the action of the descending cylinder 30. As shown in FIG. will be.

As described above, a plurality of EEFLs that have passed through the supply part (a) are introduced into the vibrator part (b), which is a main part of the present invention, to implement a desired process.

The vibrating part (b) may include a second accommodating piece 14 formed to accommodate a plurality of EEFLs introduced from the supply part a, and a plurality of EEFLs located in the second accommodating piece so as not to be separated. A fixing plate body 15 formed at one end of the receiving piece; and a first supporting plate 17 capable of supporting and fixing the second receiving piece; and a first supporting plate 17 at a lower end of the first supporting plate in a desired direction. 2, a rotating body 22 for inclining the receiving piece to be inclined; and a cylinder 33 positioned at one lower end of the first support plate 17 to implement the movement of the second receiving piece; and the rotating body 22 A second support plate 18 connected up and down by a lifting action of the cylinder 31 and the cylinder rod 42; and a plurality of guides 19 installed at adjacent points on both sides of the cylinder 31; And a vibrator 20 for implementing repetitive vibration (shake) at a predetermined position under the second accommodation piece.

The vibrator 20 refers to a conventional vibrator, and transmits the rotation of the motor to the weight shaft by a coil spring by using a small motor, and the weight is rotated so that the center of gravity is set to one side to rotate the head portion. It is a way to vibrate. Since this is a conventionally known technique, detailed description thereof will be omitted.

Figure 3 (a) and 3 (b) shows the lifting motion implemented by the vibrator (b) from the side, the cylinder 31 is operated in the state of Figure 3 (a) to lift the cylinder rod 42 A second support plate (18) associated with the cylinder rod (42) as applied; Rotating body 22; A first support plate 17; And a second accommodation piece 14; In addition, as shown in FIG. 3 (b), the second accommodating piece 14, which is accompanied and ascends, is positioned on the same line as the third accommodating piece 21 of the feeding part C, and the EEFL of the second accommodating piece is the third accommodating piece. It was configured to enter (21).

In the present invention, before the lifting and lowering action of the cylinder 31 is performed, the EEFL 13 vibrates itself to drive foreign substances such as glass tube fragments that may be inside the EEFL glass tube to one end of the EEFL to facilitate observation and identification. It is characterized by the fact that defects can be detected early and the defect rate can be minimized.

This is implemented through the process as shown in FIG. 4 (a) (b) (c). Initially, when a plurality of EEFLs 11 enter the second accommodation piece 14 held in the horizontal state as shown in FIG. 4 (a), the cylinder 33 acts to raise the rod and thus, FIG. In the same state, the second receiving piece 14 connected to the first supporting plate 17 is inclined at a predetermined angle, and the vibrator mounted at one lower end of the second receiving piece 14 in a state in which the second receiving piece 14 is inclined ( 20), the EEFL 11 vibrates itself, and the contents in the EEFL internal space are naturally induced to one end to facilitate observation.

The second accommodating piece 14, which has undergone the above process, is restored to the same state as shown in FIG. 4 (a), and then, as shown in FIG. 4 (a) by the action of another cylinder 31 and the cylinder rod 42. Will rise vertically.

The first support plate 17 is fixedly coupled to the second accommodation piece 14 by a separate fastening means (not shown) to support the second accommodation piece, as well as the cylinder 33 provided on one side. Induction means for transmitting the drive to the second accommodation piece to implement the same movement as the second accommodation piece 14 in accordance with the action of the cylinder (33). In addition, a predetermined rotating body 22 is formed below the first support plate to accommodate the frame 16 in the inner space as shown in the drawing, so that the rotating body 22 starts from the frame 16. Allow free rotation in the left and right directions.

The fixing plate body 15 is a component for preventing the plurality of EEFLs located on the upper side of the second accommodation piece from falling off when the second accommodation piece 14 is inclined in a state as shown in FIG. 4 (b). Again perform the same vertical motion.

FIG. 5 (a) (b) shows the movement path of the EEFL entering the third accommodation piece 21. The EEFL introduced from the second accommodation piece stands by in the same state as in FIG. 5 (a). Due to the synergism of the rod as the cylinder of 32 is driven, the third accommodation piece is vertically raised as shown in FIG. In order to perform the above process, it can be seen that the cylinder rod (not shown) and the third accommodation piece 21 are integrally formed by separate frames (not shown) as shown in the drawing.

Hereinafter, the overall step-by-step operation of the present invention made of the above configuration and its operation will be described in detail.

The present invention relates to an inspection device (1) for an external electrode fluorescent lamp (EEFL), and to insert the inspection device to easily determine whether or not glass fragments or foreign matter, etc. in the inner space of the EEFL glass tube. It is an inspection device for external electrode fluorescent lamps equipped with a vertical vibrator that allows the EEFL to be tilted to one side using a vertical vibrator before being put into the device and then vibrates with a predetermined vibrator to check the contents located inside the EEFL. , The work process is largely supply; Vibration unit; Input unit; can be subdivided into, looking at the classification according to the process as follows.

* Step 1-Supply Department

The supply unit is a preparatory step of initially receiving the EEFL completed through a separate process and delivering it to the vibration unit to be described later.

Initially, when a large amount of EEFL 13 is introduced, the corresponding rod 41 is lowered while the cylinder 30 of the supply unit is driven. At this time, the stopper 11 connected to the rod 41 is also lowered in the same movement. The EEFL blocked by the stopper enters the second accommodation piece 14 out of the first accommodation piece 10.

* Step 2-Vibration Part

The vibration unit is a separate preparation step performed before supplying the EEFL to the inspection apparatus of the present invention. After receiving the appropriate amount of the EEFL introduced through the supply unit, the foreign matter inside the glass tube is easily vibrated through the vibrator 20. It is a process to make it easy to identify.

When the appropriate amount of EEFL is supplied to the second accommodation piece 14, the rod of the cylinder 33 connected to the first support plate 17 is raised to push up one side of the second accommodation piece, thereby accommodating the second accommodation piece. The piece 14 is inclined by rotating the rotating body 22 associated with the frame 16 to one side so that the EEFL accommodated in the second accommodation piece is positioned in a state as shown in FIG. 4 (b). In such a state, the vibrator 20 is momentarily driven to apply vibration to the second accommodation piece 14, which causes the EEFL to also vibrate itself while inclining various foreign substances present in the respective EEFL internal spaces downward. Move to one end. Then, the rod of the cylinder 33 of the first support plate is lowered again so that the second accommodating piece is placed in a horizontal state, and then the rod 42 is driven by driving the cylinder 31 connected to the second support plate 18. As the second receiving piece rises vertically as it rises, the EEFL, which has completed the vibration process, is transferred to the input unit.

* Step 3-Input section

The input unit is a finishing process of entering the EEFL having completed the above-described processes into the apparatus of the present invention.

The EEFL 13 introduced from the second accommodating piece 14 is positioned above the third accommodating piece 21 integrally formed with a separate cylinder 32 and a cylinder rod (not shown). As the cylinder rod rises, the third accommodation piece is also vertically raised to supply an appropriate amount of EEFL to the apparatus in the same manner as in FIG. 5 (b).

The EEFL, which has gone through all the above-described processes, enters the inspection apparatus 1 of the present invention to perform a desired inspection process.

The present invention is characterized in that it is possible to implement a more complete and accurate inspection by configuring so that the EEFL can be placed in a more suitable state for the inspection at the stage before the EEFL is put into the inspection device, the embodiment described above and the accompanying drawings It is only configured to help the understanding of the present invention, it will be said that only one embodiment that can be applied to the present invention, and also the scope of the present invention is not limited to the above-described embodiment.

1 is an overall configuration diagram of an inspection apparatus for an external electrode fluorescent lamp including the main part of the present invention.

Figure 2 (a) (b) is an exemplary view showing a state in which the supply unit (a) of Figure 1 is expanded and driven up and down by way of example.

Figure 3 (a) (b) is a side view showing an example of driving the up and down by extracting and expanding the vibrating portion (b) of FIG.

Figure 4 (a) (b) (c) is a schematic diagram showing the process of the step-by-step progress of the vibration portion of the main portion of the present invention.

Figure 5 (a) (b) is an exemplary view showing a state of driving the up and down by extracting and expanding the input portion (c) of FIG.

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

1. EEFL Inspection System 10. First Acceptance

11. Stopper 13. EEFL

14. The second accommodation piece 15. Fixed plate body

16. Frame 17. First Support Plate

18. Second Support Plate 19. Guide

20. Vibrator 21. Third accommodation

22. Rotators 30, 31, 32, 33. cylinder

41,42. Cylinder rod

(A) Supply part (b) Vibration part

(C) Input part

Claims (4)

In the inspection device for an external electrode fluorescent lamp (EEFL), The inspection device is provided with a predetermined cylinder 30 and the cylinder rod 41 to be driven up and down, a stopper 11 formed integrally coupled thereto and a first receiving piece 10 formed to be inclined at a predetermined angle. ;Wow, The second accommodating piece 14 formed to accommodate the plurality of fluorescent lamps 13 introduced from the supply portion, and at one end of the second accommodating piece so that the plurality of fluorescent lamps positioned on the second accommodating piece do not escape. The fixed plate body 15 formed, the first support plate 17 which is connected to the second accommodation piece and can be supported and fixed, and the second accommodation piece in a desired direction at a predetermined position at the lower end of the first support plate. The rotating body 22 to be inclined, the cylinder 33 which is positioned at the lower end of the first support plate 17 to implement the movement of the first support plate, and the rotating body 22 is connected to the cylinder The second support plate 18 driven up and down by the lifting action of the 31 and the cylinder rod 42, and the plurality of guides 19 and the lower side of the second accommodating piece provided at adjacent points on both sides of the cylinder 31. To implement repetitive vibration (shake) at the position of And; Eastern binary consisting of the vibrator 20 The third accommodating piece 21 accommodating the plurality of fluorescent lamps introduced from the vibrating portion, and the cylinder 32 formed integrally with the third accommodating piece through a predetermined frame to drive the third accommodating piece up and down. And an injection unit comprising a cylinder rod; and an inspection apparatus for an external electrode fluorescent lamp equipped with a vertical vibrator. The method of claim 1, The rotating body 22 is further configured below the first supporting plate of the vibrating unit, and the inner space of the rotating body allows the frame to be accommodated so that the rotating body can freely rotate in the left and right directions based on the frame. Inspection device for an external electrode fluorescent lamp equipped with a vertical vibrator characterized in that the configuration. The method of claim 1, The supply unit is configured to move the stopper 11 up and down by the action of the cylinder 30 to move up and down to move a large amount of fluorescent lamp located on the first accommodation piece to the second accommodation piece 14 in accordance with the drive of the stopper. Inspection device for an external electrode fluorescent lamp equipped with a vertical vibrator. The method of claim 1, The vibrating unit separates and arranges a plurality of fluorescent lamps introduced from the supply unit on the second accommodating piece 14, and the cylinder 33, which is connected to the first supporting plate 17, raises the rod so that the second accommodating piece 14 is disposed. After the predetermined angle is inclined, the vibrator 20 mounted at one lower end of the second accommodating member is inclined to vibrate the fluorescent lamp by itself, and the contents in the fluorescent lamp internal space are naturally induced to one end and observed. Inspection device for an external electrode fluorescent lamp equipped with a vertical vibrator, characterized in that the ease.

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