JP2001270728A - Device for treating cathode ray tube and method of treating the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for treating cathode ray tubes, capable of stably exhibiting operational capacity, and keeping safety of operators by using remote monitoring. SOLUTION: In this device for treating cathode ray tubes, tubes are treated in the following: the front of the cathode ray tube 13a in a graphics display device 13 is made to face upward, and cutting position and dimension are computed and determined based on data obtained by an image pickup and dimension-computing camera 20; the neck of the cathode ray tube is cut with a cutting saw 30f for the purpose of returning the vacuum pressure inside the cathode ray tube to the atmospheric pressure; the front face of the cathode ray tube is sucked and fastened with a suction pad of a traveling suction machine 14 and simultaneously a body of the display device is pierced to be fastened at the both sides with sharp skewers 11d, 12d of which the each has a rotary drive unit, and then cut, when the cutting operation for cutting four sides in the front of the cathode ray tube is carried out; the separated cathode ray tube kept in a state of being hung is transferred to the next process composed of an exclusive equipment for recycling glass of the cathode ray tubes, while the sucking function of the suction machine which is sucking and fastening the front face of the cathode ray tube is continued to be operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a waste television receiver,
The present invention relates to a cathode ray tube processing apparatus and method suitable for recycling cathode ray tubes used for waste display devices and the like.

[0002]

2. Description of the Related Art Conventionally, to remove a cathode ray tube from a waste television receiver and a waste display device, a manual operation by a specialized trader is common (for example, Nikkan Kogyo Shimbun, June 21, 1995). However, manual disassembly requires a great deal of labor and time because the disassembly method differs depending on the type, size, and manufacturer, and the screws are crushed or the component mounting bracket is damaged. In addition, there is a danger to workers due to vacuum explosion of the CRT, glass breakage, and the like generated during disassembly work, and there is also a problem in the work environment.

[0003]

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. As the operation rate of the facility is required to be improved, the manual disassembly of the waste television receiver and the waste display device is currently performed, and the screws of the waste television receiver and the waste display device are crushed or parts are attached. Since some brackets are damaged, considerable time and labor is required for disassembly time, and at the same time, there is a danger to workers due to vacuum explosion of CRT generated during disassembly work, glass damage, etc.
It cannot be expected in terms of stable processing capacity and safety.

An object of the present invention is to solve the above-mentioned problems and to provide a CRT processing apparatus and method capable of easily performing CRT processing.

Another object of the present invention is to provide a cathode ray tube processing apparatus and method capable of automatically performing cathode ray tube processing.

[0006]

A feature of the present invention is to remove a cathode ray tube from a waste television receiver and a waste display device by turning the front surface of the cathode ray tube of the image display device upward and cutting the four sides of the front surface of the cathode ray tube. Before cutting the four sides of the cathode ray tube, the neck portion of the cathode ray tube is cut with a cutting saw and the degree of vacuum inside the cathode ray tube is returned to the atmospheric pressure so as not to give a sudden impact. Damage to the front of the CRT due to the contact with the cutting saw involves the danger of a vacuum explosion, but vacuum destruction due to cutting the neck returns the internal pressure of the CRT to atmospheric pressure. Explosion can be prevented.

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

In the present invention, when the above four sides of the cathode ray tube are cut, the front 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. The sharp skewer-shaped clamp portions may be driven into both sides of the housing to fix the housing and cut.

If the suction device is of a traveling type, the cathode ray tube is cut off and separated from the waste television receiver and the waste display device, and then the suction function of the suction device for suction-fixing the front surface of the cathode ray tube is not stopped, and the suction device is sucked. The suspended CRT can be automatically supplied to the dedicated CRT glass recycling processing device, which is the next process, by using the traveling function of the traveling adsorption device while the suspended CRT is suspended.

[0010]

A waste television receiver and a waste display device having a cathode ray tube to be processed according to the present invention are supplied to a cathode ray tube glass recycling processing device and a housing processing and recycling device which are the next steps of the device of the present invention. On the way, the apparatus of the present invention automatically removes the cathode ray tube and automatically supplies it to each processing step. By automation, it is possible to reduce the number of workers and secure safety by remote monitoring.

[0011]

An embodiment of the present invention will be described with reference to the drawings. 1 and 2 are a plan view and a side view showing an embodiment of a CRT separation apparatus according to the present invention. The present CRT separation apparatus is composed of CRT separators 5, 6, 7, 8 capable of horizontal movement by a gate-type rail, a lifter conveyor 9, a supply conveyor 10, rotation driving devices 11, 12, a traveling suction device 14, a lifter. It comprises a turntable 16 and a neck cutting device 30.

[0012] As shown in FIG.
A pair of portal supports 15a, 15b and a portal support 15a, 15
b, a traveling body 14a on which a suction device 14 and a camera 20 for calculating an imaging dimension are mounted, and an image display device 13
, A rotary drive device 11, 12 for correcting the posture of the mounted state, a lifter conveyor 9, and a lifter turntable for horizontally rotating the image display device 13 to correct the posture of the mounted state. The traveling body 14a travels according to a control signal from the system control unit, and functions mainly at the time of carrying out the cathode ray tube 13a after the image display device 13 is cut off and at the time of focusing of the imaging dimension calculation camera 20. The mounting state setting camera 21 is the rail 1
5 is installed in the lower beam portion, and images the image display device 13 as a subject from obliquely above.

The image display device 13 is automatically conveyed by the supply conveyor 10 and the lifter conveyor 9 onto the turntable 16 at the center of the lifter conveyor 9, and the conveyed image display device 13 is mounted by the mounting state setting camera 21. The state is imaged, the orientation of the front surface of the cathode ray tube of the image display device 13 is detected, and the rotation drive devices 11 and 12 and the lifter turntable 16 are linked by a control signal from a system control unit (not shown).

The rotary driving devices 11 and 12 are provided with sharp skewer-shaped clamp portions 11d and 12d at the ends of the driving portions of the rotary driving motors 11a and 12a, respectively. , Skewer clamp 11
d, 12d, and the rotation driving motors 11a, 12a so that the front surface of the cathode ray tube of the image display device 13 faces upward.
Is rotated, and the image display device 13 is turned 90 ° from the current mounted state.
Alternatively, the mounting posture is corrected by rotating the mounting vertically by 180 °.

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 in the traveling direction of the lifter conveyor 9. On the other hand, the lifter turntable 16 is rotated so as to be located forward or backward, and the mounting posture is corrected.

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, images the front surface of the cathode ray tube by the imaging dimension calculation camera 20 to detect the dimensions of the front surface of the cathode ray tube. The adsorber traveling body 14a is linked.

The center of the front of the cathode ray tube is calculated by the system control unit, and based on the data, the center of the front of the cathode ray tube is detected. Is automatically adjusted so that the vacuum suction pad 14d of the suction device 14 can come into contact with the suction device 14. The vacuum tube 13a is fixed by the vacuum suction effect of the suction device 14, and the image display device 13 having the cathode ray tube 13a is Then, press down and fix.

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

As shown in FIG.
Image display device 13 having fixed cathode ray tube 13a
Is calculated by the system control unit from the dimension data on the front surface of the cathode ray tube measured by the imaging dimension calculation camera 20,
The neck portion of the cathode ray tube is detected, the neck cutting device 30 is linked based on the data, and the neck portion and the wire cable attached to the neck portion are cut by the neck cutting wire saw 30e and the neck cutting saw 30f of the neck cutting device 30. Disconnect.

Similarly, the system control unit calculates from the dimensional data of the front surface of the cathode ray tube measured by the imaging size operation camera 20 to detect the outer peripheral size of the front surface of the cathode ray tube, and the cathode ray tube separating saws 5d of the cathode ray tube separation devices 5, 6, 7, and 8 , 6d, and 7d, the surface of the housing portion 4 of the image display device 13 on the outer periphery of the front surface of the cathode ray tube is vertically cut, and the stopper and the bracket portion of the cathode ray tube are separated and separated.

The housing of the image display device 13 and the cathode ray tube 13
After the a is 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 horizontal driving cylinders of the rotary driving devices 11 and 12, which fixed the housing of the image display device 13, are provided. 1
1b and 12b are released, and the image display device 1
3 is cut off on the lifter turntable 16.
In this embodiment, the CRT separation saws 5d, 6d
Although electric circular saws are used as d and 7d, the saw 30e for cutting the neck wire and the saw 30f for cutting the neck,
It is also possible to use other cutting mechanisms such as a water jet. The water jet can be selectively cut depending on the type and presence or absence of the abrasive to be mixed. Therefore, the water jet is useful for cutting only the housing portion without cutting the glass portion of the cathode ray tube.

The cut-off casing of the image display device 13 is automatically conveyed from the lifter turntable 16 to the lifter conveyor 9 and supplied to the crushing equipment in the next step, and the removed cathode ray tube 13a is removed. Is
Adsorber traveling body 14 while adsorbing to traveling adsorption device 14
By the traveling function of a, it is transported in the unloading direction of the suction device traveling rail 15, and can be automatically supplied to the glass processing equipment in the next step.

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 / calculating means will be described. FIG. 5 to FIG. 9 are conceptual diagrams of a method for obtaining dimensional data of a cathode ray tube.

An image of the image display device 13 is taken by a video camera immediately above the image display device 13 whose attitude is controlled so that the front surface of the cathode ray tube faces upward. The captured image data is stored in, for example, a document “Image Processing Industrial Application Directory, 1994,
The following processing is performed using an image processing apparatus and an image processing method described in “Fuji Techno System Co., Ltd., supervised by Masatoshi Ejiri”.

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 housing of the image display device 13 and the outline of the cathode ray tube 13a can be extracted from the imaging background. An area division process is performed on the obtained binary image to divide the binary image into two or more areas 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 regions of 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. In image display devices such as waste televisions and waste display devices targeted by the present invention, the area of these regions is considered to be: housing outline> CRT outline> other outline. Therefore, for an image display device having the above-mentioned area size relationship, when the image is divided into two or more areas, the area having the second largest area area can be regarded as the outline of the CRT. . Under ideal imaging conditions, the outline surrounding the second area may be regarded as the outline of the cathode ray tube 13a and data such as the position may be obtained. For example, four corners of the cathode ray tube are shaded by the housing. In such a case, the obtained binary image is an image in which four corners are missing. Therefore, the region data is corrected as follows to extract the front surface of the cathode ray tube.

Now, the aspect ratio a / b of the vertical / horizontal length of the front surface of the cathode ray tube is

[0027]

(Equation 1)

The area S of a rectangular approximation of a CRT having a diagonal length L is

[0029]

(Equation 2)

## EQU1 ## Therefore, the diagonal length L is

[0031]

(Equation 3)

## EQU2 ## Here, assuming that the aspect ratio a / b is constant regardless of the size of the cathode ray tube, the diagonal length L of the cathode ray tube is uniquely determined from the area S. By the way, the size of a cathode ray tube is generally represented by an integer unit using inches as a unit, such as 17 type or 20 type, using the numerical value of the diagonal length L. Therefore, if the error range for the diagonal length L is considered to be (L−0.5) inch ≦ L type <(L + 0.5) inch, a type number corresponding to an arbitrary numerical value is determined.

On the other hand, according to the above document, the pixel position data is represented by f (i, j), the size of the area surrounded by the closed curve is represented by S,
If the position of the center of gravity of the region is (XG, YG) and the rotation angle of the main axis of the region is θ, then

[0034]

(Equation 4)

[0035]

(Equation 5)

[0036]

(Equation 6)

Is required.

Therefore, as shown in FIG. 7, the area, the center of gravity, and the main shaft rotation angle are obtained from the region data corresponding to the cathode ray tube in the binary image according to (Equation 4) to (Equation 6). A diagonal length is obtained from the obtained area based on (Equation 3), and a 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 a / b. The 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 around the center of gravity of the region.
With the rectangular image data thus converted, the front surface of the cathode ray tube is approximated as shown in FIG. By doing so, even when an accurate contour cannot be extracted from the binary image, the front surface of the cathode ray tube can be easily recognized. Further, in the present invention, since 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, the process can be reduced in weight by approximating the rectangle.

In the above processing, a CRT approximation rectangle for each model number of the CRT is determined in advance, and the area of the CRT equivalent region obtained by (Equation 4) is directly compared with the area of this approximation rectangle. A CRT approximation rectangle may be obtained. Also, using the zoom mechanism of the camera, an image is taken so that the size of the front surface of the cathode-ray tube is the same regardless of the type, and the processes of (Equation 4) and (Equation 3) are omitted to obtain the same approximation. The rectangular image data may be subjected to parallel / rotation conversion.

The threshold value determined for obtaining the binary image is not necessarily required to be constant, but the color of the housing of the image display device to be processed is identified, and the threshold value is determined according to the result. The value may be changed. Also, a threshold value is set for each of R, G, and B for a color image, or
The binarization process may be performed on a monochrome image or a color image by setting two or more threshold values.

Further, in the above description, the image display device 1
The video taken with a video camera from just above 3 was used,
It is also possible to use a picked-up image taken from above.
In this case, the optical axis of the video camera is
The CRT approximation rectangle is corrected to a parallelogram using the angle formed by the center axis of the above, and similar processing may be performed using the corrected parallelogram image data.

The pixel data on the front surface of the cathode ray tube extracted as described above is converted into the elevation angle, viewing angle, magnification,
Based on the data such as the focal length and the like, the data is converted into actual dimensions on the calculating means, and the obtained dimension data is transferred to the system control unit.

[0043]

According to the present invention, a waste television receiver and a waste display device having a cathode ray tube are supplied to a cathode ray tube glass recycling processing device and a casing processing / recycling device which are the next steps of the device of the present invention. On the way, by the apparatus of the present invention, the cathode ray tube is automatically removed and automatically supplied to each processing step, and by automating the cathode ray tube separation apparatus of the apparatus of the present invention,
This has the effect of reducing the number of workers and ensuring safety through remote monitoring.

[Brief description of the drawings]

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 separation device shown in FIG.

FIG. 3 is a partial side view showing a mounting state setting device in the CRT separation device shown in FIG. 1;

FIG. 4 is a partial side view showing a CRT separator in the CRT separator shown in FIG. 1;

FIG. 5 is a conceptual diagram illustrating 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.

FIG. 7 is a conceptual diagram showing a CRT region.

FIG. 8 is a conceptual diagram showing a CRT region.

FIG. 9 is a conceptual diagram showing a CRT region.

[Explanation of symbols]

1,2,3,4 ... CRT separation rail, 1a,
1b, 2a, 2b, 3a, 3b: Portal column for separating CRTs, 5, 6, 7, 8 ... CRT separator, 5a, 6
a, 7a: Horizontal cylinder for separating cathode ray tubes, 5b, 6
b, 7b ... vertical cylinder for separating cathode ray tubes, 5c, 7c
... CRT separation motor, 5d, 6d, 7d CRT separation saw, 9 lifter conveyor, 10 supply conveyor, 11, 12 rotation drive device, 11a, 12a rotation drive motor, 11b, 12b rotation drive Horizontal cylinders, 11c, 12c ... vertical cylinders for rotary drive, 11
d, 12d: skewer clamp, 13: image display device, 13
a: CRT, 14: traveling suction device, 14a: traveling body for adsorption device, 14b ... hydraulic cylinder for adsorption device, 14
c: spring, 14d: vacuum suction pad, 15: travel rail for suction device, 15a, 15b: portal column for suction device, 16: lifter turntable, 16a: vertical cylinder of turntable, 20: camera for calculating imaging dimensions, 2
Reference numeral 1 denotes a mounting state setting camera, 30 denotes a neck cutting device,
30a: Vertical cylinder for cutting the neck, 30b: Horizontal cylinder for cutting the neck, 30c: Motor for cutting the neck electric wire, 30d: Motor for cutting the neck, 30e: Saw for cutting the electric wire of the neck, 30f: For cutting the neck saw.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Nemoto 2-9-18 Misakicho, Chiyoda-ku, Tokyo Inside Hitachi System Technologies, Ltd. (72) Inventor Nobutaka Michida 2-9- Misakicho, Chiyoda-ku, Tokyo 18 Inside Hitachi System Technology Co., Ltd. (72) Inventor Yoshiyuki Takamura 794, Higashi-Toyoi, Katsumatsu-shi, Yamaguchi Prefecture Inside Kasado Plant, Hitachi, Ltd. (72) Inventor Yuko Okada 502, Kandate-cho, Tsuchiura-shi, Ibaraki Pref. Inside the Mechanical Research Laboratory, Hitachi Co., Ltd. (72) Toshiyuki Aoki 502, Kantachi-cho, Tsuchiura-shi, Ibaraki Pref. Inside the Mechanical Research Laboratory (72) Inventor Tsutomu Hasegawa 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo Hitachi, Ltd.

Claims (3)

[Claims] 1. A cathode-ray tube which is suspended by sucking a front glass of a cathode-ray tube by means of a suction device capable of being transported, suspending the suspended cathode-ray tube at a position of a neck portion, and suspending the cathode-ray tube having a neck portion electrode side cut and removed. A method for treating a cathode ray tube, wherein the tube is transported while being lowered. 2. A hanging means for sucking a front glass of a cathode ray tube and suspending the cathode ray tube by a suction device capable of being transported and moved, a cutting means for transversely cutting the suspended cathode ray tube at a neck position, and a neck electrode side. A CRT processing device, comprising: a transfer unit configured to transfer the cut and removed CRT in a suspended state. 3. An image display device having a cathode ray tube is imaged from the front side of the cathode ray tube to obtain a multi-valued image, and the obtained multi-valued image is binarized and converted into a binary image.
A method for separating a cathode ray tube, comprising: cutting a casing of the image display device according to a line determined based on a contour of a region having the second largest area among regions enclosed by a closed curve in a value image.