KR100951887B1 - Inspection System for External Electrode Fluorescent Lamp - Google Patents

Abstract

The present invention is a supply unit configured to supply an appropriate amount of EEFL while driving up and down the stopper formed integrally with a predetermined cylinder to implement a repetitive movement by the cylinder; and EEFL transferred from the supply unit It is configured to move up and down by the action of the cylinder in the state accommodated by a plurality of pieces, the second accommodation piece is formed at the bottom of one side to form a first support plate fixedly coupled with another cylinder to drive the cylinder up and down A vibrator configured to be inclined along the lower side of the second accommodating piece, and further including a vibrator; and a third accommodating piece formed in connection with a cylinder so that the EEFL transferred from the vibrating part can be sequentially supplied to the device. The input unit is repeatedly driven up and down; there is a feature that consists of.

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 enlarged excerpt of the supply unit (a) of Figure 1 driving up and down 3 (a) and 3 (b) are side views illustrating a state in which the vibration part (b) of FIG. 2 is extracted and driven up and down by way of example, and FIG. 4 (a) (b) shows an example. (c) is a configuration diagram schematically showing the process of the vibration unit, which is the main part of the present invention step by step, Figure 5 (a) (b) is to extract the input (c) of FIG. It is a block diagram showing the state by way of example.

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 unit (a) is the first point at which the completed EEFL moves to the inspection apparatus of the present invention. The predetermined cylinder 30 and the cylinder rod can be driven up and down by the same method as in FIG. 2 (a) (b). (41), the stopper 11 which is integrally coupled with this, and the 1st accommodation piece 10 comprised inclined at a predetermined angle.

The stopper 11 accommodates a large amount of EEFL in the first accommodating piece 10 while staying in the standby state as shown in FIG. 2A, and then lowers the cylinder 30 to connect the cylinder rod 41. And the stopper 11 can be disposed downward. 2 (b) shows that as the stopper 11 is disposed downward by the action of the descending cylinder 30, a plurality of EEFLs 13 blocked by the stopper can move to the second accommodation piece 14. 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.

Here, 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 on the second accommodating piece so as not to be separated. (2) a fixed plate body (15) formed at one end of the receiving piece (14); and a first supporting plate (17) capable of supporting and fixing the second receiving piece (14); and the first supporting plate ( 17) a rotating body 22 for inclining the second accommodating piece 14 in a desired direction at a lower end position; and the first supporting plate 17 is placed on the upper side of the rotating body 22 and the first At the lower right side of the first support plate 17, a cylinder 33 embodying the movement of the second accommodation piece 14; and connected to the rotating body 22 to the cylinder 31 and the cylinder rod 42. A second support plate 18 driven up and down by a lifting action; 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) is a side view showing the lifting motion implemented by the vibrating portion (b), the cylinder 31 in the state of Figure 3 (a) to operate the cylinder rod 42 A second support plate (18) associated with the cylinder rod (42) as it is raised; Rotating body 22; A first support plate 17; And a second accommodation piece 14; In addition, as shown in (b) of FIG. 3, the second accommodating piece 14, which is raised and raised, is positioned on the same line as the third accommodating piece 21 of the input part C. It was configured to be able to enter the flight (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 same process as in FIG. 4 (a) (b) (c). Initially, when a plurality of EEFLs 11 enter the second accommodation piece 14 maintained in the horizontal state as shown in FIG. 4A, the cylinder 33 acts to raise the rod, thereby increasing the rod of FIG. As shown in FIG. 2, the second accommodation piece 14 integrally formed with the first support plate 17 is inclined at a predetermined angle.
At this time, the second accommodating piece 14 waits in an inclined state and drives the vibrator 20 mounted at the lower end of one side of the second accommodating piece 14 while the EEFL 11 vibrates itself and the inside of the EEFL. The contents in the space are naturally guided to one end to facilitate observation.

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

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 14, and the first support plate 17. As the rod of the cylinder 33 provided at the right side is driven, the first support plate 17 and the second accommodation piece 14 implement the same movement.
In addition, a predetermined rotating body 22 is formed on the lower side of the first support plate to accommodate the frame 16 in the inner space as shown in FIG. The whole 22 can rotate freely in a left-right direction.

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. , Also perform the same vertical movement.

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 waits in the state shown in FIG. 5 (a). Due to the synergism of the rod as the cylinder 32 is driven, the third accommodation piece rises vertically 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.

In this case, 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 the right side of the second accommodation piece 14. Accordingly, the second accommodating piece 14 is inclined by rotating the rotor 22 connected to the frame 16 to one side so that the EEFL accommodated in the second accommodating piece is positioned as shown in FIG. . In the above 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 14 is placed in a horizontal state, and then the rod is driven by driving the cylinder 31 which is connected to the second support plate 18. As the 42 is raised, the second accommodation piece 14 is vertically raised, and 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.

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.

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

(A) and (b) of FIG. 3 are side views showing the state of driving up and down by extracting and expanding the vibrating part (b) of FIG.

Figure 4 (a) (b) (c) is a schematic diagram showing a process of step by step vibration unit that is the main part of the present invention.

Figure 5 (a) (b) is a configuration diagram showing a state of driving the up and down by extracting and expanding the input portion (c) of Figure 1 by way of example.

* 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 the second accommodating piece so that the plurality of fluorescent lamps positioned in the second accommodating piece 14 are not separated. (14) a fixed plate body (15) formed at one side end portion, a first support plate (17) which is connected to the second accommodation piece (14), can be supported and fixed, and the first support plate (17). The rotary body 22 which induces the second accommodating piece 14 to be inclined in a desired direction at the lower end position and the first supporting plate 17 is positioned at the lower right side of the first supporting plate 17 to move the first supporting plate 17. The second support plate 18 and the cylinder 31, which is connected to the rotating body 22 to be driven up and down by the lifting action of the cylinder 31 and the cylinder rod 42, and both sides of the cylinder 31 Repetitive vibration (vibration) at the lower positions of the plurality of guides 19 and the second accommodation piece 14 provided at adjacent points And; Eastern binary consisting of the vibrator (20) for the current The third receiving piece 21 accommodates the plurality of fluorescent lamps introduced from the vibrating portion, and the third receiving piece 21 through the frame 16 to drive the third receiving piece 21 up and down. Injector consisting of an integrally formed cylinder 32 and the cylinder rod; the inspection device for an external electrode fluorescent lamp equipped with a vertical vibrator characterized in that it comprises a. delete The method of claim 1, The supply part drives the stopper 11 up and down by the action of the cylinder 30 which moves up and down, so that a large amount of fluorescent lamps positioned in the first accommodation piece 10 is driven by the stopper 11. Inspection device for an external electrode fluorescent lamp equipped with a vertical vibrator, characterized in that configured to be moved to. 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 contents of the interior of the fluorescent lamp are naturally vibrated by driving the vibrator 20 mounted at one lower end of the second accommodating member 14 in a tilted state to vibrate the fluorescent lamp by itself. Inspection device for an external electrode fluorescent lamp equipped with a vertical vibrator, characterized in that the observation is easy to guide.

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