KR200201713Y1 - Anode testing apparatus for crt funnel and testing method of the same - Google Patents

Abstract

Disclosed is an inspection device of an anode terminal portion for a CRT funnel. The disclosed apparatus for inspecting the anode terminal portion of a cathode ray tube funnel includes: a plurality of cathode ray tube funnels which are transported along a conveyor and have anode terminal portions inserted into the outer circumference of the pupil; A funnel sensing sensor unit for sensing the neck portion of the CRT funnel being transported; A displacement sensor unit for measuring the amount of forward and backward movement of the CRT based on the signal of the funnel detection sensor unit; Imaging means for imaging an anode terminal portion and an edge portion of the CRT funnel; And a control unit for controlling the insertion rate of the anode terminal unit to be compared with the predetermined allowable reference value based on the area of the anode terminal unit according to the amount of forward and backward movement of the CRT and the reference position. It is possible to secure the reliability of the inspection by accurately performing the determination of the insertion of the terminal portion, and there is an advantage in that the productive efficiency of the product is reduced by reducing the amount of waste of the produced product due to a miscalculation.

Description

Inspection device for anode of the anode terminal for CRT and funnel and inspection method using the same

The present invention relates to a process for inspecting the insertion of the anode terminal during the manufacturing process of the CRT. More specifically, the inspection of the anode terminal for the CRT funnel for automatically inspecting the determination of the acceptance of the anode terminal during the movement of the CRT. An apparatus and an inspection method using the same.

In general, a cathode ray tube, that is, a cathode ray tube, is a display device that realizes a predetermined image by deflecting an electron beam emitted by an electron gun in a predetermined direction to emit a fluorescent surface formed on a panel, and is used in various electronic parts such as a television and a monitor. Typically, the CRT is a panel 11 on the front surface of which a fluorescent film is formed on an inner surface thereof, as shown in FIG. 1, and is sealed to the panel 11 to form an outer container. An electron gun (not shown) is installed and the funnel 13 is provided with a deflection yoke (not shown) in the cone portion where the body and the neck portion 17 are connected.

The funnel 13 has a pupil formed on its outer circumferential surface. An anode terminal portion 15 supplied with a high pressure of about 25 KV is provided in the pupil by adhesion of glass paste, and an outer graphite portion 19 made of graphite is coated on the outer circumferential surface of the funnel 13. Typically, since the DC high pressure supplied through the anode terminal portion 15 includes a ripple component, which is a large number of AC components, the funnel 13 is formed by forming an outer graphite portion on the outer circumferential surface of the funnel 13 to remove it. The internal graphite portion (not shown) formed inside the funnel 13 serves to remove the ripple included in the DC high voltage supplied through the anode terminal 15.

In the process of manufacturing the funnel of the CRT as described above, there is a series of processes for inserting the anode terminal portion into the pupil formed on one side of the outer circumferential surface of the funnel.In the process of inserting the anode terminal portion into the pupil of the funnel, three defects are inserted. Poor positioning, flipping failure and non-insertion failure occur. Inspection of the insertion failure of the anode terminal portion has generally been carried out by a visual inspection method.

The pin inspection apparatus of the conventional CRT funnel is a method of inspecting the insertion state of the anode terminal portion using the image of the anode terminal portion captured by the vision processor while the CRT funnel moves on the conveyor. In more detail, the non-insertion defect and the flipping defect are determined by comparing the image area of the anode terminal portion picked up by the imaging device with the area of the reference image, and the center of image area of the anode terminal portion is determined by the area center value of the reference image. In preparation, it is determined that the insertion position is bad.

However, in the inspection method as described above, since the funnels of the CRT moving on the actual conveyor do not have a separate alignment arrangement means, the amount of forward and backward movement of about 10 mm occurs. By the amount of forward and backward movement of the CRT, the image of the anode terminal is enlarged or reduced in size and displayed. Then, the difference in the image area of the anode terminal portion occurs, so that an incorrect judgment is made so that it is impossible to perform an accurate judgment on the acceptance decision. In addition, the defective product is judged to be a defective product and discarded by such a misjudgment, thereby lowering the production efficiency of the product.

The present invention has been made to improve the above problems, to provide an inspection device using the anode terminal portion for the CRT funnel for automatically checking whether the anode terminal portion is inserted or not during the movement of the CRT and the inspection method using the same. The purpose is.

1 is a schematic perspective view showing a general brinell tube funnel,

2 is a schematic block diagram showing the system configuration of the inspection unit for the anode terminal of the cathode tube funnel according to the present invention,

3a and 3b is a schematic view of the CRT funnel for explaining the inspection device and the inspection method using the anode terminal portion for the CRT funnel according to the present invention,

And Figure 4 is a flow chart showing the inspection method of the anode terminal portion for the CRT funnel according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10 ... CRT 11 ... Panel

13 ... Funnel 15 ... Anode terminal

17 ... neck 19 ... external graphite

21 ... conveyor 22 ... displacement sensor

23a ... Lighting 1 23b ... Lighting 2

24a ... first camera part 24b ... second camera part

25 ... Funnel sensor part 26 ... Vision mode part

27 ... Control Unit 27a ... Camera Vision Processor

27b ... Failure judgment part 28 ... Monitor part

In order to achieve the above object, the inspection device for the anode terminal of the cathode tube funnel according to the present invention includes: a plurality of cathode ray tube funnels which are transported along a conveyor and have an anode terminal portion inserted into the outer circumference of the pupil; A funnel sensing sensor unit for sensing the neck portion of the CRT funnel being transported; A displacement sensor unit for measuring the amount of forward and backward movement of the CRT based on the signal of the funnel detection sensor unit; Imaging means for imaging an anode terminal portion and an edge portion of the CRT funnel; And a control unit configured to compare the area of the anode terminal portion according to the amount of forward and backward movement of the CRT and the area change rate according to the reference position to compare and determine whether the anode terminal portion is inserted or not compared to a preset allowable reference value. .

According to the present invention, the control unit includes: a camera vision processor unit which acquires image information by imaging while illuminating the imaging unit of the CRT funnel being moved; And a determination unit determining whether the anode terminal part is in accordance with the video information.

According to the present invention, the image pickup means includes: first and second camera portions for imaging the anode terminal portion and the edge portion of the CRT; First and second lighting units scanning glare on the imaging unit of the CRT for imaging the first and second camera units; And a vision mode unit configured to acquire a signal sensed by the funnel detecting sensor unit and provide an imaging signal to the camera unit and the illumination unit.

In order to achieve the above object, the inspection method of the anode terminal for the cathode ray tube funnel according to the present invention, in the inspection method of the anode terminal portion for the cathode ray tube funnel to determine the anode terminal portion inserted into the pupil of the cathode tube outer periphery, (A) detecting the neck portion of the CRT funnel moving along the conveyor with a funnel sensor; (B) measuring the amount of forward and backward movement of the CRT by a displacement sensor unit; (C) capturing an image of an anode terminal portion and an edge portion using an image pickup means while the CRT funnel is in motion; (D) calculating a crossing point of the anode terminal portion and the edge portion of the cathode tube funnel by acquiring captured image information; (E) calculating an area change rate of the anode terminal image portion according to a reference position and an area of the anode terminal image portion according to the amount of forward and backward movement of the CRT measured by the displacement sensor unit; And (f) comparing the quality of the anode terminal portion of the CRT with respect to the anode terminal portion in comparison with the area change rate and a predetermined allowable reference value of the anode terminal image portion.

According to the present invention, the (c) step may include: (c-1) transferring a signal sensed by the funnel detecting sensor unit to a vision mode unit; And (c-2) the predetermined signal to the first and second lighting units and the first and second camera units so as to scan the flash unit to the imaging unit of the CRT based on the signal of the vision mode unit to capture the imaging unit of the CRT. Delivering; It is preferable to further include.

Therefore, by automatically checking whether the anode terminal portion is inserted or not during movement of the CRT, the reliability of the inspection is ensured, and the amount of waste of the produced product due to a miscalculation is reduced, thereby increasing the production efficiency of the product.

With reference to the accompanying drawings these features will be described in detail the inspection device of the anode terminal for the CRT funnel according to the present invention in detail.

2 is a schematic block diagram showing the system configuration of the anode terminal portion for the cathode ray tube funnel according to the present invention, Figures 3a and 3b is an anode terminal portion for the anode terminal portion for the cathode ray tube funnel according to the present invention and this A schematic diagram of a CRT funnel for explaining the inspection method used. Like reference numerals in the drawings shown above indicate the same components.

2 to 3b, the inspection device of the anode terminal portion for the cathode ray tube funnel according to the present invention is provided with a conveyor 21 is transferred in a constant direction. The CRT is transported along the conveyor 21, and a CRT tube 13 in which an anode terminal portion 15 is inserted into a pupil of a predetermined size formed on one side of the outer circumferential surface thereof is provided. In addition, the funnel detecting sensor unit 25 is installed at a predetermined position corresponding to the CRT funnel 13 so as to sense the neck portion 17 of the CRT 13. The other position corresponding to the CRT 13 is not provided with a displacement of the CRT 13 by the signal of the FUNCEL sensor 25, that is, a separate arrangement means of the CRT 13 is not provided. The displacement sensor unit 22 is provided to measure the movement amount of displacement occurring before and after at the reference position of the lens of the first camera unit 23a and the anode terminal unit 15 which will be described later.

Further, the first and the first imaging portions 15 and 30 respectively provided at the predetermined positions of the image capturing portions 15 and 30 so as to capture the predetermined image capturing portion of the CRT funnel 13, that is, the anode terminal portion 15 and the edge portion 30 of the CRT funnel 13, Imaging means is provided having a vision mode unit 26 for transmitting an operation signal to the second lighting units 24a and 24b and the first and second camera units 23a and 23b. The image area change rate of the anode terminal portion 15 and the image area change rate based on the reference position according to the amount of forward and backward movement of the CRT 13 are compared with a predetermined allowable reference value to determine whether the anode terminal portion 15 is inserted or not. The control part 27 which controls so that it may be provided is provided separately.

The controller 27 includes a camera vision processor 27a for acquiring and processing captured image information. In addition, it is provided with a quality determination unit 27b for comparing and determining whether the anode terminal 15 is inserted according to the image information, and a monitor unit 28 for monitoring the determination result data.

With reference to the accompanying drawings, a method of inspecting the anode terminal of the cathode tube funnel according to the present invention using the inspection device having the above configuration will be described in detail.

The accompanying drawings are the same as those of Figs. 2 to 3b, and Fig. 4 is a flow chart illustrating a method for inspecting whether the anode terminal for the CRT is in accordance with the present invention. Here, the same reference numerals in the drawings shown above indicate the same components.

Referring to the drawings, first, when the CRT funnel 13 moving in one direction along the conveyor 21 enters the sensing area, the neck portion 17 of the CRT 13 is the funnel detecting sensor part 25. To detect. When the detection signal is input to the funnel detection sensor unit 25, the displacement sensor unit 22 installed on one side of the CRT funnel 13 measures the amount of forward and backward movement of the CRT 13 (FIG. 4).

Next, the funnel detecting sensor unit 25 that detects the CRT funnel 13 captures the image pickup unit 15, so as to capture the anode terminal part 15 and the edge part 30 of the CRT funnel 13. A signal is sent to the vision mode unit 26 so as to provide an operation signal to the first and second lighting units 24a and 24b and the first and second camera units 23a and 23b provided at the predetermined position. Then, the vision mode unit 26 transmits an imaging operation signal to the first and second camera units 23a and 23b and the first and second lighting units 24a and 24b so that the anode of the CRT funnel 13 is provided. The center point of the terminal part 15 and the edge part 30 are imaged simultaneously, and the image of the imaging parts 15 and 30 is acquired. (42 of FIG. 4)

Next, at the same time, the funnel detecting sensor unit 25 transmits that the CRT funnel 13 has been detected to the determining unit 27b of the control unit 27, and the first and second camera units 23a and 23b. The camera vision processor unit 27a of the control unit 27 acquires the image captured by the control unit 27, and calculates the intersection of the center point of the anode terminal unit 15 and the edge unit 30 from the image (43 in Fig. 4).

Here, the reason for calculating the intersection of the center point and the edge portion 30 of the anode terminal portion 15 is the intersection of the edge portion 30 of the CRT funnel 13 to calculate the image area of the anode terminal portion 15 to be described later and This is because the size of the anode terminal portion 15 needs to be calculated by the center point of the anode terminal portion 15. That is, the intersection point of the edge portion 30 of the anode terminal portion 15 serves as a reference point for calculating the size from the center point of the anode terminal portion 15.

Next, the area of the anode terminal 15 image portion according to the amount of forward and backward movement of the CRT 13 measured by the displacement sensor unit 22, and the image portion of the anode terminal 15 from the first camera portion 24a. Calculate the area change rate of the image of the anode terminal 15 according to the reference position up to (44 in Fig. 4).

Next, the area change rate as described above is compared with the predetermined reference value of the image of the anode terminal 15, and the quality of the anode terminal 15 of the CRT 13 is compared and judged to determine whether the quality determination unit 27b. Pass the result of the determination to ().

In the next process, the determination result data is transferred to a controller for a high-level controller, that is, a waste disposal process when a bad insertion of the anode terminal portion 15 is determined.

In the case of performing the insertion acceptance determination of the anode terminal portion for the CRT funnel in the manner as described above, it is possible to ensure the reliability of the inspection by the automatic inspection, unlike the conventional, it is possible to reduce the waste of the product produced by the misjudgment.

As described above, the inspection device of the anode terminal portion for the CRT funnel according to the present invention and the inspection method using the same by automatically inspecting whether the anode terminal portion is inserted or not during the movement of the CRT, ensures the reliability of the inspection The advantage of this method is that the amount of waste produced by the miscalculation reduces the production efficiency of the product.

Claims (5)

A plurality of CRT funnels which are conveyed along the conveyor and have an anode terminal portion inserted into the outer circumference of the pupil; A funnel sensing sensor unit for sensing the neck portion of the CRT funnel being transported; A displacement sensor unit for measuring the amount of forward and backward movement of the CRT based on the signal of the funnel detection sensor unit; Imaging means for imaging an anode terminal portion and an edge portion of the CRT funnel; And And a control unit configured to control an area of the anode terminal portion according to the amount of forward and backward movement of the cathode tube funnel and an area change rate according to a reference position to compare and determine whether the anode terminal portion is inserted or not. Inspection device for anode part of funnel anode terminal part. The method of claim 1, The control unit, A camera vision processor unit which acquires image information by capturing light while illuminating the image pickup unit of the CRT funnel in motion; And And a goodness determining unit for determining whether or not the anode terminal unit according to the video information is included. The method of claim 1, The imaging means, First and second camera portions for capturing an anode terminal portion and an edge portion of the CRT funnel; First and second lighting units scanning glare on the imaging unit of the CRT for imaging the first and second camera units; And And a vision mode unit for acquiring a signal sensed by the funnel detecting sensor unit and providing an imaging signal to the camera unit and the illumination unit. In the inspection method of the anode terminal portion for the cathode ray tube funnel to determine the anode terminal portion inserted into the pupil of the CRT outer periphery, (A) detecting the neck portion of the CRT funnel moving along the conveyor with a funnel sensor; (B) measuring the amount of forward and backward movement of the CRT by a displacement sensor unit; (C) capturing an image of an anode terminal portion and an edge portion using an image pickup means while the CRT funnel is in motion; (D) calculating a crossing point of the anode terminal portion and the edge portion of the cathode tube funnel by acquiring captured image information; (E) calculating an area change rate of the anode terminal image portion according to a reference position and an area of the anode terminal image portion according to the amount of forward and backward movement of the CRT measured by the displacement sensor unit; And (F) comparing the quality of the anode terminal portion of the CRT with respect to the anode terminal portion of the CRT in comparison with the area change rate and a predetermined tolerance value of the anode terminal image portion; . The method of claim 4, wherein The (c) step, (C-1) transmitting a signal sensed to the funnel detecting sensor unit to a vision mode unit; And (C-2) transmitting the predetermined signal to the first and the lighting unit and the first and second camera units to scan the flash unit to the imaging unit of the CRT funnel by the signal of the vision mode unit to image the imaging unit of the CRT funnel. A positive part inspection method of the anode terminal portion for a CRT funnel, characterized in that it further comprises.