WO1997006634A1

WO1997006634A1 - Crt separation apparatus and method

Info

Publication number: WO1997006634A1
Application number: PCT/JP1996/002069
Authority: WO
Inventors: Yuichi Yamamoto; Takeshi Nemoto; Yoshiyuki Takamura; Masakatsu Hayashi; Yuko Okada; Toshiyuki Aoki; Tsutomu Hasegawa; Chihiro Fukumoto; Nobutaka Michida
Original assignee: Hitachi, Ltd.
Priority date: 1995-08-04
Filing date: 1996-07-24
Publication date: 1997-02-20
Also published as: JP3184434B2; JPH0950765A

Abstract

An automatic apparatus for preliminarily separating picture tubes and cases from television sets in a scrapping system. Since no manual handling is required, this apparatus exhibits a stable processing capacity and ensures safety of laborers by remote monitor. An image display (13) is laid with the CRT (13a) upward and its cutting position and size are calculated from the data obtained from a camera (20). The neck of the CRT is cut with a saw (30f) so as to bring its inside to the atmospheric pressure. Next, when the four sides of the CRT are cut, the entire front surface is fixed on a suction pad of a running attraction device (14) and the case is fixedly nailed at both sides with sharp spit-like clamp portions (11d and 12d) equipped with a rotary driving device. The CRT, separated from the set and suspended with its entire surface held on the attraction device, is automatically transferred to the next stage to recycle the glass of picture tubes.

Description

Specification

CRT separation apparatus and method

Technical field

The present invention relates to a cathode ray tube separation apparatus and a method suitable for recycling a cathode ray tube display device such as a waste television receiver and a waste display device. Background art

Conventionally, to remove a cathode ray tube from a used television receiver and a used display device, a manual operation by a specialized company is generally used (for example, June 21, 1995 Nikkan Kogyo Shimbun). However, manual disassembly requires a great deal of labor and time due to different disassembly methods depending on the type, size, and manufacturer, as well as crushed screws and damaged component mounting brackets. In addition, there is a danger to workers due to vacuum explosion of CRT, glass breakage, etc. generated during disassembly work, and there is also a problem in the work environment.

In recent years, as the amount of general waste and industrial waste has increased, the amount of waste television receivers and waste display devices has also increased, and it has been required to improve the operation rate of the processing facilities or recycling processing facilities. In the meantime, in the current disassembly work of the waste television receiver and the waste display device, the screws of the waste television receiver and the waste display device are crushed, and the parts mounting bracket is damaged. It requires considerable time and labor for disassembly, as well as disassembly time.At the same time, there is a danger to workers due to vacuum explosion of CRT, glass breakage, etc. generated during disassembly work, and stable treatment. Cannot be expected in terms of performance and safety. Disclosure of the invention

An object of the present invention is to solve the above-mentioned problems and to provide a cathode ray tube separation apparatus and a method capable of easily separating a cathode ray tube. Another object of the present invention is to provide an apparatus and a method for separating a brown tube, which can automatically separate the brown tube. One feature of the present invention is that an image display device having a cathode ray tube is mounted on a processing table in a predetermined direction, an image of the mounted image display device is taken, and an image signal is generated. The CRT is processed to calculate the size of the CRT, and from the calculated data, a front-side separation position at which the CRT is to be separated from the housing of the image display device on the front side of the image display device is calculated. Cutting off the housing at the front-side separation position, and separating the cathode ray tube from the image display device.

Another feature of the present invention is that an image display device having a Braun tube is mounted on a processing table in a predetermined direction, an image of the mounted image display device is taken, an image signal is generated, and the image signal is generated. Signal processing is used to calculate the size of the cathode ray tube, and from the calculated data, the front side separation position of the cathode ray tube at which the cathode ray tube should be separated from the housing of the image display device on the front side of the image display device is calculated. Then, the casing is cut at the front-side separation position, an electric wire attached to the neck portion side of the cathode ray tube is cut, and the cathode ray tube is separated from the image display device.

Still another feature of the present invention is that when the image display device having a cathode ray tube is subjected to waste treatment, the display surface of the cathode ray tube separated from the housing faces upward, and the display surface is sucked by a vacuum suction pad. An object of the present invention is to suspend the brown tube and move the vacuum pad by moving the vacuum pad in the suspended state.

Still another feature of the present invention is that the step of removing the blank tube from the waste television receiver and the waste display device includes the steps of: Before cutting the side, the neck of the Braun tube is cut with a cutting saw, and the vacuum inside the Braun tube is returned to atmospheric pressure so as not to give a sudden impact. Damage to the front side of the cathode ray tube due to the contact with the cutting saw involves the danger of a vacuum explosion, but vacuum destruction caused by cutting the neck returns the internal pressure of the cathode ray tube to atmospheric pressure. A vacuum explosion can be prevented even if the front part of the brown tube is damaged.

In the present invention, in order to improve the CRT recycling efficiency, the method includes a step of automatically supplying the CRT to a dedicated CRT glass recycling processing apparatus or the like, which is the next process, without damaging the CRT and keeping the CRT in a state close to the original shape. May be.

In the present invention, when cutting the four sides of the front surface of the cathode ray tube, the entire surface of the cathode ray tube is sucked so that the waste television receiver, the waste display device and the cathode ray tube do not shift in the cutting position, dimensions, etc. at the time of cutting. The suction pad of the device is fixed by suction, and the casing of the waste television receiver and the waste display device uses a rotary drive device with a sharp skewer-shaped clamp part, and is used for the waste television receiver and the waste display device. The sharp skewer-shaped clamps may be driven into both sides of the case to fix the case and cut.

If the suction device is of a traveling type, after separating and separating the brown tube from the waste television receiver and waste display device, the suction function of the suction device, which fixed the entire surface of the brown tube by suction, is not stopped, but is sucked and suspended. In the lowered state, the removed brown tube can be automatically supplied to the dedicated brown tube glass recycling equipment that will be the next process by the traveling function of the traveling adsorption device.

The waste television receiver, the waste display device, and the like having the cathode ray tube to be processed by the present invention are supplied to the brown tube glass recycling processing device, etc., which is the next process of the device of the present invention, and the casing processing and recycling device. On the way, the apparatus of the present invention automatically removes the CRT and supplies it automatically to each processing step. The automation can reduce the number of workers and ensure safety by remote monitoring. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view showing one embodiment of a cathode ray tube separating apparatus according to the present invention. FIG. 2 is a side view of the CRT separator shown in FIG.

FIG. 3 is a partial side view showing a placement state setting device in the brown pipe separating device shown in FIG. FIG.

FIG. 4 is a partial side view showing a brown tube separator in the brown tube separator shown in FIG.

FIG. 5 is a conceptual diagram showing an example of a multi-value image obtained by imaging the image display device. FIG. 6 is a conceptual diagram showing an example of a binary image obtained by binarizing the multi-value image shown in FIG. 7 to 9 are conceptual diagrams showing a cathode ray tube region.

FIG. 10 is a plan view showing another embodiment of the CRT separating apparatus according to the present invention. FIG. 11 is a side view of the CRT separator shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 are a plan view and a side view showing one embodiment of a CRT separator according to the present invention. The CRT separator is a CRT separator 5, 6, 7, 8, which can be moved horizontally by a gate-type rail, a lifter conveyor 9, a supply conveyor 10, a rotary drive unit 11, 12, and a traveling type. It consists of a suction device 14, a lifter-turntable 16 and a neck cutting device 30.

As shown in Fig. 3, the mounting state setting device includes a pair of portal supports 15a and 15b, a rail 15 of portal supports 15a and 15b, a suction device 14 and A traveling body 14a equipped with a camera 20 for calculating the imaging dimensions, a rotation drive device 11 for rotating the image display device 13 vertically and a posture correction for the mounted state, and a lifter conveyor 9 The horizontal rotation of the image display device 13 and the lifter-turntable 16 for correcting the posture of the mounted state and force, the traveling of the traveling body 14a is controlled by a control signal from the system control unit. This function is mainly performed at the time of unloading the cathode ray tube 13a after the image display device 13 is cut and at the time of focusing the imaging dimension calculation camera 20. The mounting state setting camera 21 is installed in the beam section below the rail 15 and images the image display device 13 as a subject from obliquely above.

The image display device 13 is connected to the supply conveyor 10 and the lifter The image display device 13 automatically conveyed onto the turntable 16 in the center of the conveyor 9 and conveyed is imaged by the mounting state setting camera 21 to capture the placement state, and the image display device 13 The direction of the front is detected, and the rotation driving devices 11 and 12 and the lifter / turntable 16 are interlocked by a control signal from a system control unit (not shown).

The rotary drive units 1 1 and 1 2 are provided with a skewer-shaped clamp lid 1 and 2 d at the tip of the drive unit of the rotary drive motors 1 a and 1 2 a, from both sides of the image display device 13. The skewer-shaped clamps 1 1 d and 1 2 d of the rotation drive devices 1 and 1 are driven into the side, and the rotation drive motors 1 la and 1 2 a are rotated so that the front surface of the cathode ray tube of the image display device 13 faces upward. Then, the image display device 13 is vertically rotated by 90 ° or 180 ° from the current mounted state to correct the mounted posture.

When the front surface of the cathode ray tube of the image display device 13 is placed sideways with respect to the traveling direction of the lifter conveyor 9, the horizontal rotation function of the lifter turntable 16 moves the cathode ray tube surface to the lifter conveyor 9. Rotate the lifter-turntable 16 so that it is positioned forward or backward with respect to the direction of travel of the vehicle, and correct the mounting posture.

At the same time, the image display device 13 corrects the attitude of the front surface of the cathode ray tube upward, and at the same time, calculates the imaging dimensions. And the traveling unit for suction device 14a.

The system control unit calculates the center of the front of the cathode ray tube, detects the center of the front of the cathode ray tube based on the data, and slides down the suction device cylinder 14 b or moves the traveling body 14 a horizontally. The vacuum suction pad 14 of the suction device 14 is automatically adjusted so that the vacuum suction pad 14 d can come into contact with the center of the front surface of the cathode ray tube. The vacuum tube 13 of the suction device 14 fixes the cathode ray tube 13 a by the vacuum suction action. The image display device 13 having the cathode ray tube 13 a is pressed down from both sides by 12 and fixed.

The image display device 13 and the brown tube 13a are fixed by the rotary drive devices 11 and 12 and the suction device 14 and at the same time, the lifter turntable 1 on which the image display device 13 is mounted. 6 is lowered by the function of the vertical cylinder 16a, and the fixed image display device 13 and cathode ray tube 13a are suspended.

As shown in FIG. 4, the image display device 13 having the fixed cathode ray tube 13a is operated by the system control unit from the dimension data on the front surface of the cathode ray tube measured by the imaging dimension operation camera 20, as shown in FIG. The neck part of the CRT is detected, and the neck cutting device 30 is linked based on the data, and the neck and neck are cut by the neck wire cutting saw 30 e and the neck cutting saw 30 f of the neck cutting device 30. Cut the cable attached to the part.

Similarly, the system control unit calculates from the dimensional data on the front of the cathode ray tube, which is measured by the imaging dimension computing power Mela 20, and detects the outer dimensions of the front of the cathode ray tube, and separates the cathode ray tubes 5, 6, 7, and 8 for the cathode ray tube. Using the saws 5 d, 6 d, and 7 d, the four sides of the housing of the image display device 13 on the outer periphery of the front surface of the cathode ray tube are vertically cut, and the fasteners and brackets of the cathode ray tube are separated and separated.

After the casing of the image display device 13 and the cathode ray tube 13a are separated by the above operation, the lifter turntable 16 is returned to the standard level by the function of the vertical cylinder 16a, and at the same time, the casing of the image display device 13 is opened. The horizontal drive cylinders 1 1 b, 1 2 b of the rotary drive devices 1, 1, 2 that fixed the body are released, and the holding function of the image display device 13 is released on the lifter turntable 16. Cut off. In this embodiment, electric circular saws are used as the saws 5 d, 6 d, and 7 d for separating cathode ray tubes, the saw 30 e for cutting the electric wire of the neck, and the saw 30 f for cutting the neck. It is also possible to use another cutting mechanism such as a warjet jet. The water jet can be selectively cut depending on the type and presence of the abrasive mixed in, so it is suitable for cutting only the housing part without cutting the glass part of the cathode ray tube.

The cut-off casing of the image display device 13 was automatically conveyed to the lifter conveyor 9 from the lifter-turntable 16, supplied to the next process crushing equipment, etc., and removed. As for the CRT 13a, the suction device is kept adsorbed on the traveling suction device 14 By the traveling function of the placing and traveling body 14a, it is transported in the unloading direction of the adsorption device traveling rail 15 and can be automatically supplied to the glass processing equipment in the next process.

Here, an example of a method of obtaining the dimensional data of the cathode ray tube 13a from the image of the image display device 13 having the cathode ray tube 13a using the imaging / calculation means will be described. Fig. 5 to Fig. 9 are conceptual diagrams of the method of obtaining the dimension data of the CRT.

An image of the image display device 13 is taken by a video camera from directly above the image display device 13 whose posture is controlled so that the front surface of the brown tube faces upward. The captured image data is converted to the next image using the image processing device and image processing method described in the document “Image Processing Industrial Application Directory, 1994, published by Fuji Techno System Co., Ltd., supervised by Masaru Ejiri”. Process as follows.

First, multi-value processing is performed on the captured video to obtain a multi-value image as shown in FIG. Next, a binarization process is performed on the multi-valued image at a predetermined threshold value to obtain a binary image as shown in FIG. Here, the threshold value is set in advance so that the outline of the casing of the image display device 13 and the outline of the cathode ray tube 13a can be extracted from the imaging background. The obtained binary image is subjected to region division processing, and the binary image is divided into two or more regions surrounded by a closed curve. Here, when the image display device having a cathode ray tube is divided into regions, the image display device can be divided into a contour portion of a casing, a contour portion of a cathode ray tube, a contour portion such as a knob, and a contour portion such as a label pasted on the casing. The area of these regions is determined by an image display device such as a waste television or a waste display device targeted by the present invention.

Case outline> CRT tube outline> Other outlines

it is conceivable that. Therefore, for an image display device having the above-mentioned area size relationship, when divided into two or more areas, the area having the second largest area area is the contour of the Brownian tube. Can be considered to be. Under ideal imaging conditions, it is sufficient to consider the outline surrounding the second area as the outline of the cathode ray tube 13a and obtain data such as the position.For example, the four corners of the cathode ray tube are shaded by the housing. In such a case, the resulting binary image is an image with four corners missing. Therefore, the area data is corrected as follows and the front surface of the CRT is extracted. Now, if the aspect ratio a / b of the vertical and horizontal lengths of the front of the cathode ray tube is represented by a / b = tan (a) (Equation 1), the area S of the rectangular approximation of the cathode ray tube with the diagonal length L is

S = Lcos () sin () tan ^ a)

L ²

1 + tan a) alb

L ² (number 2)

\ + (alb) ² . Therefore, the diagonal length L is

L (number 3)

It is expressed as Here, assuming that the aspect ratio a Zb is constant regardless of the size of the CRT, the diagonal length L of the CRT is uniquely determined from the area S. By the way, in general, the size of a cathode ray tube is represented by an integer unit in inches, such as a 17-inch or 20-inch, using a numerical value of a diagonal length L. Therefore, the error range for the diagonal length L is

(L-0.5) inch ≤ L type (L + 0.5) inch

Then, the corresponding model number is determined for any numerical value.

On the other hand, according to the literature, pixel position data is represented by f (i, j), the size of a region surrounded by a closed curve is represented by S, the center of gravity of the region is represented by (XG, YG), and the rotation angle of the principal axis of the region is represented by: S

(Equation 4)

1 U,,

XG YG (number 5)

(Equation 6)

Is required.

Therefore, as shown in FIG. 7, from the area data corresponding to the CRT in the binary image, the area, the center of gravity, and the spindle rotation angle are obtained from (Equation 4) to (Equation 6). The diagonal length is obtained from the obtained area based on (Equation 3), and the model number corresponding to the obtained diagonal length is obtained. Then, as shown in FIG. 8, rectangular image data is obtained in which the length of the obtained model number is on a diagonal line and the length is distributed to the aspect ratio of aZb. This rectangular image data is moved in parallel so that the center of the rectangle overlaps the center of gravity of the region, and is further rotated by the rotation angle of the main axis with the center of gravity of the region as the center of rotation. Based on the rectangular image data thus converted, the front surface of the cathode ray tube is approximated as shown in FIG. In this way, even if an accurate contour cannot be extracted from a binary image, the front of the cathode ray tube can be easily recognized. Further, in the present invention, it is considered that the accuracy required for the disassembly process can be obtained even if the front surface of the cathode ray tube of the image display device is regarded as a rectangle. Therefore, the approximation of the rectangle can reduce the weight of the process.

In the above processing, a rectangle for approximating the Braun tube for each model number of the Braun tube is determined in advance, and the area of the CRT equivalent region obtained by (Equation 4) is directly calculated as the area of the approximation rectangle. By comparison, a CRT approximation rectangle may be obtained. In addition, using the zoom mechanism of the camera, images are taken so that the front surface of the cathode ray tube is the same regardless of the type, and the processing of (Equation 4) and (Equation 3) are omitted, and the same approximation is performed. Parallel rectangular image data It may be inverted.

It should be noted that, in order to obtain a binary image, the threshold value is not necessarily constant, but the color of the housing of the image display device to be processed is identified, and the threshold value is set in accordance with the result. You may change it. In addition, a threshold value may be set for each of R, G, and B for a color image, or two or more threshold values may be set for a black-and-white image or a color image to perform binarization processing. .

Further, in the above description, the image taken by the video camera directly above the image display device 13 is used, but it is also possible to use the image taken from above. In this case, the rectangle for approximating the Braun tube is corrected to a parallelogram using the angle between the optical axis of the video camera and the central axis of the Braun tube 13a, and the corrected parallelogram image data is used. Then, the same processing may be performed.

The pixel data of the front surface of the cathode ray tube extracted as described above is converted into actual dimensions on arithmetic means based on data such as the elevation angle, viewing angle, magnification, and focal length of the video camera, and the obtained dimension data is controlled by the system. Transfer to department.

An example in which a water jet is used instead of the cathode ray tube separating saws 5 d, 6 d, and 7 d will be described with reference to FIGS. 10 and 11.

FIG. 10 and FIG. 11 are a plan view and a side view showing the processing steps when using the ultrahigh-pressure water generators 50 and 51 for CRT separation. The operation is the same as that of the first embodiment, except that the saw cutting is changed to the high pressure water cutting. Also, the mounting state setting device is omitted. As described in detail in FIG. 10 and FIG. 11, the CRT neck is located at a position corresponding to the position signal calculated by the system control unit based on the dimension data on the front surface of the CRT measured by the imaging dimension calculation camera 20. The cutting device 30 cuts the electric wire at the neck. Similarly, at the position corresponding to the position signal calculated and processed by the system control unit from the measurement of the dimensions of the Braun tube measured by the imaging dimension calculation force camera 20 for the CRT separation of the CRTs 50 and 51. High-pressure water jet 50a, 51a Image of the outer circumference of the front surface of the cathode ray tube The box part 4 of the display unit 13 is hydraulically cut off, and the bracket and the bracket of the brown tube are cut off. And separate. After that, it is processed and transported in the same manner as in the first embodiment, and is automatically supplied to the glass processing equipment in the next process.

As described above, according to the present invention, a waste television receiver and a waste display device having a cathode ray tube are used as a cathode ray tube glass recycling processing device and the like for the subsequent process of the device of the present invention and a casing processing and recycling device. During the supply, the device of the present invention automatically removes the cathode ray tubes and automatically supplies them to each processing step, and also reduces the number of workers by automating the cathode ray tube separation device of the device of the present invention. This has the effect of ensuring safety through remote monitoring. Industrial applicability

Claims

The scope of the claims

1. An image display device having a cathode ray tube is placed on a processing table, the mounted image display device is imaged, the orientation of the cathode ray tube front surface of the image display device is detected, and the orientation of the cathode ray tube front surface is changed. The mounting state of the image display device is set so as to face upward, the image display device in which the mounting state is set is imaged, the center position and the size of the entire surface of the cathode ray tube are calculated, and the calculated data is used. Calculating a front-side separation position at which the cathode ray tube should be separated from the image display device on the front side and a rear-side separation position at which the cathode ray tube should be separated from the image display device at the rear side; The CRT is sucked at the front side and cut at the front side separation position and the rear side separation position, and the CRT is attached to the image display device. CRT method for separating you and separating from.

2. A mounting means for mounting an image display device having a cathode ray tube on a processing table, an image of the mounted image display device is detected, and the orientation of the front surface of the cathode ray tube of the image display device is detected. Mounting state setting means for setting the mounting state of the image display device so that the orientation of the image display device is upward, and imaging the image display device in which the mounting state is set, and the central position and size of the entire surface of the cathode ray tube From the calculated data, the front tube disconnection position where the cathode ray tube should be separated from the image display device on the front side and the rear side cut position where the cathode ray tube should be disconnected from the image display device on the back side. Imaging / calculating means for calculating the separation position; suction means for adsorbing the brown tube at the front center position of the brown tube; the front side separation position and the rear surface Press the severing position, consists of a row intends cutting means cutting Te, CRT separation apparatus the Buraun tube, characterized in that removal from the image display apparatus.

3. The placement state setting means includes a video camera that captures the image display device placed on the processing table from an obliquely upward direction, and a rotary drive device that rotates the image display device by sandwiching the image display device from both sides. The imaging / arithmetic means includes a video camera for capturing the image display device placed on the processing table from directly above, and a video signal from the video camera as input data. 3. The brown tube separating apparatus according to claim 2, further comprising an image processing controller for performing image data processing.

4. The rotation drive device includes a clamp portion including a sharp skewered rod and a drive portion for driving the rod into both sides of a housing of the image display device, a rotation portion for vertically rotating the clamp portion, and the clamp. 3. The brown tube separator according to claim 2, further comprising an opening / closing control unit that opens and closes an arm unit to which the arm is attached.

5. The CRT separator according to claim 2, wherein the video camera of the placement state setting means and the video camera of the imaging / calculation means are provided separately.

6. The cutting means moves parallel to both sides of the display screen on the front side of the CRT, and a pair of rotary saws for separating both sides of the CRT from the housing, and moves parallel to the upper and lower edges of the display screen. A pair of rotary saws for separating the upper and lower edges of the cathode ray tube from the housing, and a horizontal cut of the image display device at a position where the neck of the cathode ray tube is cut transversely, thereby performing vacuum destruction inside the cathode ray tube and a deflection yoke. 3. The apparatus according to claim 2, wherein the part and the electric cable are separated from the brown pipe.

7. The method according to claim 2, wherein the suction means has a vacuum suction pad, and starts an operation of lifting the cathode ray tube upward by the vacuum suction pad before the operation of the cutting means is completed. A brown tube separator as described.

8. The CRT separator according to any one of claims 1 to 6, wherein the image display device is one of a waste television receiver and a waste display device.

9. An image display device having a cathode ray tube is suspended by suction of the front glass of the cathode ray tube, and the suspended image display device is cut transversely including the image display device housing at the position of the neck of the cathode ray tube. A method for separating a cathode ray tube, comprising: vertically cutting a casing on the front side of the cathode ray tube along the periphery of the front glass of the cathode ray tube, thereby separating the cathode ray tube from the inside of the image display device.

10. The front glass of the cathode ray tube is sucked by the suction device that can be transported and moved. A method of treating a cathode ray tube, which comprises suspending a cathode ray tube, cutting the suspended cathode ray tube laterally at a neck portion, and transporting the cathode ray tube with the neck portion electrode side cut and removed in a suspended state.

1 1. Suspension means for suspending an image display device having a cathode ray tube by suction of the front glass of the cathode ray tube, and horizontal cutting of the suspended image display device at the position of the cathode ray tube neck, including the housing of the image display device. Horizontal cutting means, and vertical cutting means for vertically cutting the front side housing of the image display device along the periphery of the front glass of the cathode ray tube, whereby the cathode ray tube is separated from the inside of the image display device. An image display device having a CRT is taken from the front side of the CRT to obtain a multi-valued image, and the obtained multi-valued image is binarized and converted into a binary image. In the binary image, the casing of the image display device is cut along a predetermined line based on the contour of the second largest area in the area surrounded by the closed curve in the closed curve. CRT separation method _c 1 3 to. Placing the image display device having a cathode ray tube on the processing table in a predetermined orientation, generates an image pickup signal by imaging the placed above image display apparatus, signal the image signal Processing to calculate the size of the cathode ray tube, and from the calculated data, the cathode ray tube should be separated from the housing of the image display device by separating the cathode ray tube from the front of the image display device. A method for separating a cathode ray tube, comprising calculating a position, cutting the casing at the front-side separation position, and separating the cathode ray tube from the image display device.

14. An image display device having a cathode ray tube is mounted on a processing table in a predetermined direction, an image of the mounted image display device is taken, an image signal is generated, and the image signal is processed to perform the signal processing of the cathode ray tube. From the calculated data, a front-side separation position at which the cathode ray tube should be separated from the housing of the image display device on the front side of the image display device is calculated, and the front side cut-off position is calculated. A method for separating a cathode ray tube, comprising cutting the casing at a separated position, cutting an electric wire attached to a neck portion side of the cathode ray tube, and separating the brown tube from the image display device.

15 5. When disposing of an image display device having a cathode ray tube as waste, the display surface of the cathode ray tube separated from the housing is turned upward, and the display surface is sucked by a vacuum suction pad to suspend the cathode ray tube. A method of processing a cathode ray tube, wherein the cathode ray tube is moved by moving the vacuum pad in a lowered state.

16. An image display device having a housing and a cathode ray tube provided in the housing is mounted on a processing table in a predetermined direction, and the mounted image display device is imaged to obtain an imaging signal. The imaging signal is generated, signal processing is performed on the imaging signal to calculate the size of the Braun tube, and the image display device on which the imaging is completed is moved from the position where the imaging is performed, and the image display device is previously determined according to the size of the CRT. At the determined processing position, the CRT is positioned according to the calculated size of the cathode ray tube, and at the determined processing position, the housing is cut off at the front side of the image display device. And separating the same from the image display device.

17. The method for separating a cathode ray tube according to claim 16, wherein the calculation of the size of the cathode ray tube is performed by a data processing of a diagram in which a captured cathode ray tube surface is approximated by a rectangle. Method.

18. The method for separating a brown tube according to claim 17, wherein the figure approximated by a rectangle is a rectangle.