JP2985792B2 - Cathode ray tube discrimination method, discrimination device and processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for disassembling a video device (television receiver, personal computer, display monitor, or the like) to be discarded and reproduced. Specifically, a method for processing a cut groove in a housing constituting an image device, a method for disassembling a metal band for preventing implosion attached to a panel portion of a cathode ray tube (also referred to as a CRT / CRT, etc.), and displaying an image of the cathode ray tube The present invention relates to a method for determining a size and a pipe type and an apparatus therefor.

[0002]

2. Description of the Related Art For the purpose of effective use of resources and preservation of the global environment, discarded televisions and the like are dismantled and separated and recycled (recycled) for each constituent material.

As a regeneration processing method, for example, Japanese Patent Laid-Open No. 5-185064 using a dry method has been proposed. Among them, as a method of disassembling (removing) a metal band for preventing implosion (hereinafter also referred to as a metal band), a method of heating the metal band with a burner and applying water along the metal band has been proposed. ing.

[0004]

However, there has been no specific proposal for a means for disassembling the housing of a video device, and there are many manual methods.

[0005] In the above-mentioned method using burner heating and water, it takes time to heat and remove the metal band.
In addition, there was a risk that the automation of the facilities would be extensive.

Further, a method and an apparatus for judging the presence or absence of the safety glass adhered to the display surface of the cathode ray tube via an adhesive have not been automated.

SUMMARY OF THE INVENTION It is an object of the present invention to efficiently and efficiently disassemble a casing of a waste video apparatus, remove a metal band, and measure the presence / absence of safety glass of a cathode ray tube.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides: (1) an end milling or laser processing method for a main surface of a housing of a video equipment housing a cathode ray tube and a control circuit unit; After performing cutting by at least one of processing and water jet processing, a fastening member for fastening the cathode ray tube is removed, and the image display unit is taken out of the housing.

(2) A disassembly method in which the implosion-preventing metal band is removed by heating with high-frequency heating while applying a pressing load to the implosion-preventing metal band.

(3) The step of measuring the outer dimensions of the cathode ray tube and the step of measuring the distance from the distance sensor to the fluorescent screen of the cathode ray tube determine the size of the image display and the presence or absence of the safety glass. Method.

(4) Circular grooves are formed by a disk-shaped diamond cutter at the boundary between the panel part and the funnel part of the cathode ray tube, and then the cathode ray tube is separated into a panel part and a funnel part by heating. Processing method.

With the above configuration, the dismantling of the waste video equipment can be automated. In addition, the separate reproduction process after disassembly is facilitated. As a result, the recycling rate is improved, which contributes to environmental conservation and effective use of resources.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a step of measuring the outer dimensions of a cathode ray tube, and a step of measuring a distance from a distance sensor to a fluorescent screen of the cathode ray tube. This is a method for distinguishing a cathode ray tube, and can automatically measure the size of a video display tube of the cathode ray tube and determine whether or not there is a safety glass.

According to a second aspect of the present invention, there is provided a step of measuring an outer dimension of a cathode ray tube, a step of measuring a distance from a distance sensor to a fluorescent screen of the cathode ray tube, A method for treating a cathode ray tube, comprising a step of separating the cathode ray tube from a cathode ray tube provided with glass, whereby the sorting process of the cathode ray tube can be automated and the recycling rate can be improved.

According to a third aspect of the present invention, a step of measuring an outer dimension of a cathode ray tube, a step of measuring a distance from a distance sensor to a fluorescent screen of the cathode ray tube, and a cathode ray tube having no safety glass are provided. A method for treating a cathode ray tube, comprising: a step of separating the cathode ray tube into a cathode ray tube having glass; and a step of separating the cathode ray tube into a panel portion and a funnel portion. Can be automated and improve the recycling rate.

According to a fourth aspect of the present invention, there is provided a cathode ray tube comprising: means for measuring an outer dimension of the cathode ray tube; and means for measuring a distance from a distance sensor to a fluorescent screen of the cathode ray tube. It is possible to automate the measurement of the image display tube size of the cathode ray tube and the judgment of the presence or absence of the safety glass.

According to a seventh aspect of the present invention, there is provided the following steps for reuse: (1) heating by high frequency heating while applying a pressing load to an implosion preventing metal band wound around the outer periphery of a panel portion; Removing the metal band for preventing implosion,
(2) After measuring the external dimensions of the cathode ray tube, measuring the distance from the distance sensor to the fluorescent screen of the cathode ray tube to determine the image display size of the cathode ray tube and the presence or absence of the safety glass; And a method for treating a cathode ray tube, characterized in that the disassembly of the metal band for preventing implosion of the cathode ray tube and the determination of the type can be automated.

The invention according to claim 8 further comprises a step of separating a cathode ray tube having a safety glass on the image display surface side from a cathode ray tube having no safety glass. Item 7 is a method for processing waste video equipment, and the separation of cathode ray tubes can be automated depending on the presence or absence of safety glass.

According to a ninth aspect of the present invention, there is provided the processing method for waste video equipment according to the eighth aspect, further comprising a step of separating the cathode ray tube into a panel portion and a funnel portion. The cathode ray tube can be automatically separated into a panel portion and a funnel portion.

According to a tenth aspect of the present invention, there is provided the following process for reusing: (1) The main surface of the housing of the video equipment housing the video display unit and the control circuit unit is subjected to end milling or laser processing. A step of cutting by at least one of processing or water jet processing, (2) heating by high frequency heating while applying a pressing load to a metal band for preventing implosion wound around a panel portion of a cathode ray tube; Removing the metal band for preventing implosion. The method for treating a discarded video device is characterized in that the metal band can be automatically removed.

The invention according to claim 11 further measures the size of the cathode ray tube and the presence or absence of safety glass by measuring the external dimensions of the cathode ray tube and then measuring the distance from a distance sensor to the fluorescent screen of the cathode ray tube. The method for treating a waste video apparatus according to claim 10, further comprising a step of determining a cathode ray tube for determining whether or not the safety glass of the cathode ray tube from which the metal band has been removed can be automated.

According to a twelfth aspect of the present invention, the method further comprises a step of separating a cathode ray tube having a safety glass on the image display surface side from a cathode ray tube having no safety glass. Item 11 is a method for processing a waste video apparatus, whereby the separation of a cathode ray tube from which a metal band is removed can be automated.

According to a thirteenth aspect of the present invention, there is provided the following steps for reuse: (1) The main surface of the housing of the video equipment which houses the video display unit and the control circuit unit is subjected to end milling or laser processing. A step of cutting by at least one of processing or water jet processing, (2) a step of separating a cathode ray tube from a housing, and (3) a metal band for preventing implosion wound around a panel portion outer periphery of the cathode ray tube. Heating by high-frequency heating while applying a pressing load to the impeller to remove the metal band for preventing implosion. (4) After measuring the external dimensions of the cathode ray tube, determine the distance from the distance sensor to the fluorescent screen of the cathode ray tube. A cathode ray tube determination step of determining the image display size of the cathode ray tube and the presence or absence of safety glass by measuring,
(5) a cathode ray tube having a safety glass on the image display surface side,
A process for separating cathode ray tubes without safety glass,
(6) A method for treating waste video equipment characterized by comprising a step of separating a cathode ray tube into a panel portion and a funnel portion, and efficiently disassembling the housing and separating the cathode ray tube. Can be automated.

According to a fourteenth aspect of the present invention, at least one of the following steps for reusing: (1) Recognizing a code assigned to a housing and recognizing a type, a model, a product number, and a type of a cathode ray tube of a video device. (2) the main surface of the housing of the video equipment housing the video display unit and the control circuit unit by at least one of end mill processing, laser processing, or water jet processing. And a cutting process. The method for treating a waste video device is characterized by comprising the steps of:

According to a fifteenth aspect of the present invention, the implosion-preventing metal band is heated by high-frequency heating while applying a pressing load to the implosion-preventing metal band wound around the panel portion of the cathode ray tube. Wherein the disassembling of the housing and the removal of the metal band can be efficiently automated.

The invention according to claim 16 further comprises the step of separating the cathode ray tube into a panel portion and a funnel portion. Thus, the work of disassembling the housing and separating the glass of the cathode ray tube can be efficiently automated.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. For convenience, a video device is shown by an example of a television receiver.

(Embodiment) FIG. 1 is a flowchart (flowchart) of a television receiver disassembling process in one embodiment of the present invention, FIG. 2 is a plan view of a main part of a housing disassembling apparatus in one embodiment of the present invention, FIG. 3 is a side view of a main part of FIG. 2, and FIG. 4 is a plan view of the main surface (bottom / bottom plate) of the housing for disassembling the housing of the video equipment.
FIG. 5 is a perspective view of a process of forming a U-shaped cutting groove, and FIG. 5 is a perspective view of a state in which the processing of the cutting groove is completed and a bottom surface (bottom plate) is opened.

The television receiver 1 shown in FIGS. 1 to 5
00 is a CRT 51 (cathode ray tube / CRT) and C
A housing (cabinet) 50 screwed to the outer peripheral surface (end surface) of the RT 51, a chassis (control circuit unit) 52 housed in the housing 50, a speaker device 55 disposed near the CRT 51, and attached to a side plate Printed wiring board 5
3, 57, etc.

As shown in FIG. 5, the CRT 51
A metal band 58 (explosion-proof reinforcing band) is wound around the outer peripheral surface (the end surface of the display screen section) in a predetermined manner, and mounting brackets 59 are provided at four places by means such as spot welding.

Next, a description will be given of a housing disassembly procedure of the general television receiver (hereinafter, referred to as a television).

FIG. 1 shows “cut groove processing → disassembly →
FIG. 2 shows a state in which a waste television is mounted on the transport pallet 2 and transferred to a fixed position, that is, step 2.

Next, the transport pallet 2 is raised from above the transport conveyor 1 by the air cylinder 9 (step 3).

Thereafter, the housing 50 of the discarded television is moved to the X axis and the Y axis.
Position in the axial direction. (Position determination / step 4). Positioning of the housing 50 in the Y-axis direction is performed by two opposed air cylinders 4 and 4 and plates 5 and 5 attached to the tip of a cylinder rod. As a matter of course, one of the two air cylinders is advanced to the home position first, and then the other air cylinder is advanced.

The positioning in the X-axis direction is similarly performed by the X-axis direction positioning means 3 in a predetermined manner. In this case, the air cylinders 7, 7 which move up and down in the Z-axis direction, the air cylinders in the X-axis direction (not shown), and the plates 8, 8 attached to the tip of the cylinder rod 7 are used at a predetermined timing.

Next, the dimensions of the determined housing in the X-axis, Y-axis and Z-axis directions are measured (step 5 / main surface position measurement).

The measurement of the principal surface position is performed in preparation for the cutting groove processing in the next step 6, and a non-contact sensor such as a laser beam sensor or an ultrasonic sensor is used.

X-axis, Y-axis, and Z-axis direction sensors 14,
15 and 16 are operated, and the main surface positions (bottom surface,
The top and both sides are measured and recognized. The cutting tool is driven in a predetermined manner based on the position recognition data.

In step 6, each main surface of the housing 50 is cut by cutting means, for example, at least one of end milling, laser processing, or water jet processing which rotates at high speed.

The means for driving the cutting tool in a predetermined manner may be implemented by arbitrarily using a general three- to five-axis control robot, for example, a scalar type robot.

The number of revolutions of the end mill tool is several hundred RPM to 25,000 RPM when the tool diameter is 3 mm to 20 mm.
It was about PM. Preferably 8.0 for a tool diameter of 12 mm
It was about 00 RPM to 10,000 RPM.

FIG. 4 shows a process in which a U-shaped cutting groove 60 is formed on the bottom surface (bottom plate) of the housing 50 by the two rotation driving means 12 and the cutting tool (end mill) 13.
In addition, even if it is only one set of a rotation drive means and a cutting tool, it does not interfere with one direction.

FIG. 5 shows a state in which the bottom surface of the housing is opened. Thereafter, steps 7 and 8 are sequentially performed to complete the cycle of processing the cut groove in the housing.

Thereafter, in another step (another stage),
The nut to which the fitting 59 has been fastened is removed by a robot (not shown). Subsequently, the cathode ray tube, the chassis, the printed wiring board, the speaker device, and the like are removed by a robot means (not shown) (all are not shown), and thereafter, may be transferred to a separation / reproduction processing step (step 9).

It is desirable that the operation of opening each main surface of the housing 50 and the operation of removing each component be performed in a step different from the step of processing the cut groove. However, the cutting step may be separately performed in the same step.

In the flow shown in FIG. 1, the steps may be interchanged, added, or deleted.

Further, it goes without saying that the shape and position of the U-shaped cut groove may be arbitrarily determined and the cut groove may be formed at an arbitrary position. For example, the ridges at the four corners in the Z-axis direction (intersections between the top surface and side surfaces or intersections between the bottom surface and side surfaces) and the X-axis and Y-axis directions are connected in place so that the main surface does not fall down during machining. Groove processing may be performed while leaving portions (not shown).

When a U-shaped cutting groove is formed not only on the bottom surface but also on the top surface and both side surfaces, the housing is rotated every 90 degrees by a housing rotating means (not shown) → the main surface position measurement → cutting The above procedure may be repeated. FIG. 6 shows a disassembled state in which four main surfaces of the housing are opened. Further, only the ridges at the four corners in the Z-axis direction may be cut, and in a separate step, each main surface may be pushed down by forcible force to open.

According to the above embodiment, when the means for rotating the end mill tool at high speed is used for the cutting groove processing, dry processing can be performed without using water or the like.

In the case of laser processing, three-dimensional processing can be performed more easily, and high-speed curved surface processing can be performed.

In the case of the water jet, the present invention can be applied not only to the cutting of the housing but also to the glass cutting of a cathode ray tube.

FIG. 7 is a conceptual configuration diagram of a disassembling process of a metal band for preventing implosion of a cathode ray tube in one embodiment of the present invention, and shows a main part configuration diagram of the disassembly apparatus viewed from a side.

FIG. 8 is a perspective view of an essential part of a metal band disassembling apparatus for preventing implosion in one embodiment of the present invention, FIG. 9 is a circuit diagram of an equivalent circuit of high-frequency heating means constituting FIG. 8, and FIG. FIG. 11 is a side view of an essential part of an example of a cathode ray tube used for the description of FIG.
3 shows a flow chart (flow chart) of a disassembly step in one embodiment of the present invention.

A cathode ray tube 51 shown in FIG. 10 includes a panel portion made of quartz glass, a funnel portion made of lead glass, a neck portion, and a metal band 58 for preventing implosion wound around the panel portion. The metal band for preventing implosion is provided with mounting brackets (tabs) 59 mounted at four corners by spot welding. Since the internal configuration of the cathode ray tube is not the subject of the present invention, the description is omitted.

7 and 8, reference numeral 70 denotes a high-frequency heating device (specifically, a high-frequency induction heating device), and 71 denotes a mounting bracket (tab) 5 for heating the metal band for preventing implosion.
Tab pressing means for constantly pressing 9 at 4 kg to 6 kg per location, 70 A is a metal band for preventing implosion from 350 degrees Celsius
An induction heating coil 72 for heating to 500 degrees Celsius is connected to a cathode ray tube (C) through an opening provided in the center of the transport pallet 74.
CRT lifting means for lifting RT) to a predetermined position in the induction heating coil 70A;
Reference numeral 75 denotes a C planted on the CRT mounting surface side of the transport pallet 74.
Reference numeral 76 denotes RT support means, which is composed of four pin members, and is a transfer pallet transfer means for transferring the transfer pallet 74 at a predetermined constant pitch, for example, a transfer conveyor.

Next, a procedure for disassembling a metal band for preventing implosion of a general cathode ray tube will be described. FIG. 11 shows a flowchart of one embodiment of the disassembly procedure.

The cathode ray tube 51 mounted on the transport pallet 74 with the panel surface supported is first sent at a predetermined pitch, and is located below the high-frequency heating device 70.

Thereafter, the cathode ray tube 51 is lifted to a predetermined position in the induction heating coil 70A by the CRT lifting means 72. Subsequently, the tab pressing means 71 descends, and the four mounting brackets (tabs) 59 are each moved by 4K.
Press with a pressing force of g to 6 kg.

Next, the high-frequency heating device 70 is operated to heat the metal band 58 for preventing implosion to about 350 to 500 degrees Celsius. The operating conditions of the high-frequency heating device in this case are 180 V, 200 A from 1500 Hz to 200 Hz.
It took 15 seconds at 0 Hz.

By this heating operation, the metal band 58 for preventing implosion rapidly rises in temperature and expands. As a result, the state becomes a “removable state of baking (heating)” in a state opposite to that at the time of shrink fitting.

Further, the heat conduction from the implosion preventing metal band 58 reduces the shearing adhesive strength of the resin impregnated in the non-combustible buffer material or the undercoated resin such as acrylic resin, polyester resin or urethane resin.

Then, finally, the adhesive force of the resin falls below the pressing force, and the metal band 58 for preventing implosion is peeled off from the panel portion. The falling metal band for implosion prevention is indicated by a chain line in the center of FIG.

Thereafter, the cathode ray tube from which the metal band for preventing implosion has been peeled is transported by a predetermined pitch. Then, the metal band for preventing implosion is removed from the transport pallet 74 in the next step.

Thereafter, a predetermined regeneration process may be individually performed on the cathode ray tube glass and the implosion preventing metal band.

FIG. 11 shows two examples of procedures for removing the implosion preventing metal band 58 from the transport pallet 74. In this case, it goes without saying that the steps of the flow are optional. Therefore, steps may be added, deleted, changed, or the like as required.

FIG. 9 shows a circuit diagram of an equivalent circuit of the high-frequency heating device used in the above description and an example of a schematic configuration specification.
The high frequency output of the high frequency heating device used in the present invention is up to 60
The KW and frequency setting range were set to about 0.5 kHz to 2000 kHz. It goes without saying that the output and the frequency may be set appropriately according to the inch size of the cathode ray tube to be handled.

As the CRT lifting means, any means such as an air cylinder or a robot may be used. The same applies to any means for transferring the transport pallet, such as a roller conveyor, a belt conveyor, a roller conveyor, and a pusher method using a fluid cylinder.

According to the above embodiment, removal of the metal band for preventing implosion can be efficiently performed in a short time. In addition, large-scale equipment is not required.

FIG. 12 is a sectional view showing the concept of the process of measuring the outer shape of a cathode ray tube according to one embodiment of the present invention. FIG. 13 is a diagram showing the measurement from the distance sensor to the fluorescent screen of the cathode ray tube according to one embodiment of the present invention. FIG. 14 is a flow chart (flowchart) of a cathode ray tube measuring step to a separating step according to an embodiment of the present invention.

As shown in FIG. 12, the cathode ray tube 51 with the metal band removed is placed at a predetermined position on a transport pallet 90 having a through hole 91 and a data carrier 92 at the center.
It is mounted with the image display surface (tube surface) facing downward.

Incidentally, the transport pallet 90 corresponds to FIG.
May be the same as the transport pallet described above, or may be of a different type on a separate line.

In this state, at least one of the vertical dimension and the horizontal dimension of the panel portion of the cathode ray tube 51 is set to the distance sensor 93.
Measured by Based on this measurement, the image display surface size (tube surface size) of the cathode ray tube is determined. Then, the measurement and judgment data are stored in a general memory means (not shown).

Next, as shown in FIG.
The measurement unit 95 provided with the measuring unit 4 is brought into contact with the image display surface.
Thereafter, the distance from the distance sensor 94 to the fluorescent screen of the cathode ray tube is measured.

In FIG. 13, the left side is a general cathode ray tube 51 without a safety glass on the image display surface. The right side shows a specially designed cathode ray tube 51A provided with a safety glass via an adhesive 81 (for example, an unsaturated polyester resin).

The thickness of the safety glass is about 2 mm to 3 m.
m, the thickness of the panel image display unit is about 10 mm, the thickness of the adhesive is about 2 mm, and the distance between the image display surface and the distance sensor 94 is about 20 mm.

Therefore, the measurement distance differs by about 5 mm depending on the presence or absence of the safety glass. As a result, the measurement accuracy of the distance sensor 94 can be reduced, and an inexpensive sensor can be used.

It goes without saying that the distance sensor may be an arbitrary sensor such as a laser beam or an ultrasonic wave.

The process of measuring and separating the cathode ray tube will be described in more detail with reference to FIG.
Measure the external dimensions of the cathode ray tube. : Distance a between a pair of opposed laser type distance sensors 93
Is set to a predetermined value. Next, the distances b1 and b2 from the laser type distance sensor to the cathode ray tube were measured, and "c = a-
(B1 + b2) "to determine the external dimensions of the cathode ray tube.

In step 22, the distance between the fluorescent screens of the distance sensor is measured (measured) and the type of tube is determined. The measurement unit 95 is brought into contact with the image display surface of the cathode ray tube. Next, the distance to the fluorescent screen applied to the inner surface of the panel of the cathode ray tube is measured by the laser distance sensor 94.

Next, the distance "H value" between the distance sensor and the phosphor screen, which has been input to the computer in advance, is compared.
(In the case of a general cathode ray tube having no safety glass (not having the safety glass), the “H value” is specified by each inch size.
The value is set automatically. ).

If H is substantially equal to h1, it is determined that the cathode ray tube is a general cathode ray tube (no safety glass). If H <h2 and the difference is about 3 mm to 4 mm or more, it is determined that the cathode ray tube has safety glass.

At step 23, data transmission is performed. The judgment result is stored in the mechanical data carrier 92 attached to the transport pallet 90. FIG. 13 shows a state where the data carrier 92 is moved to the left.

It is needless to say that, in addition to the mechanical memory shown in FIG. 13, an arbitrary type such as an optical type or a microwave type may be used to store data and transmit data.

In step 24, the cathode ray tube is separated into a general cathode ray tube and a cathode ray tube with safety glass. : Read data from data carrier and automatically transfer to another line in case of cathode ray tube with safety glass. This allows
The adhesive made of unsaturated polyester resin is prevented from entering the cullet.

In step 25, the panel and the funnel are separated and processed. : A cathode ray tube without safety glass and a cathode ray tube with safety glass. In each line, at the boundary between the panel part and the funnel part of the cathode ray tube, a disk-shaped diamond cutter is used to make a groove with a predetermined depth in a circular shape. Is applied.

Next, the groove is heated and divided by utilizing the difference in thermal stress and thermal expansion between the panel and the funnel.

The disc-shaped diamond cutter has a diameter of 80 mm to 120 mm and a disc thickness of 0.2 mm to 2 m.
m, the number of rotations was about 2,000 RPM to about 10,000 RPM, and water was used as the cutting fluid. Groove depth is 0.2mm
２2 mm.

As described above, the method for determining a cathode ray tube according to the present invention can specify the image display size of the cathode ray tube and automatically determine the presence or absence of the safety glass. In addition, the cathode ray tube is automated in the panel section and the funnel section with high productivity.

The above embodiment has been described for the purpose of reproducing an unspecified number of discarded video devices regardless of the manufacturer name, model name, product number, etc. of the video device.

When a code such as a number, a symbol, a bar code or the like representing a product number, a model, or the like given to a housing of a video device or a cathode ray tube can be automatically recognized by a CCD camera or the like, a maker name, Needless to say, it is only necessary to perform the model name, the size determination of the cathode ray tube, the processing of the cutting groove on the housing, the determination and separation of the presence or absence of the safety glass of the cathode ray tube, and the division processing of the panel portion and the funnel portion.

[0091]

As described above, the disassembling method and apparatus for waste video equipment according to the present invention can automate the operations from cutting the housing to separating and disassembling the cathode ray tube by the above configuration. In addition, the separate reproduction process after disassembly is facilitated. As a result, the recycling rate is improved, which contributes to environmental conservation and effective use of resources.

[Brief description of the drawings]

FIG. 1 is a flowchart of a disassembling process of a television receiver according to an embodiment of the present invention.

FIG. 2 is a plan view of a main part of the housing dismantling device according to one embodiment of the present invention.

FIG. 3 is a side view of a main part of FIG. 2;

FIG. 4 is a perspective view of processing a cutting groove in a housing in one embodiment of the present invention.

FIG. 5 is a perspective view showing a state in which the bottom surface is opened after the cutting groove processing according to the embodiment of the present invention;

FIG. 6 is a perspective view showing an exploded state in which four main surfaces of a housing are opened according to the embodiment of the present invention.

FIG. 7 is a conceptual configuration diagram of a disassembling process of a metal band for preventing implosion of a cathode ray tube in one embodiment of the present invention.

FIG. 8 is a perspective view of a main part of the metal band disassembly device for preventing implosion in one embodiment of the present invention.

FIG. 9 is a circuit diagram of an equivalent circuit of the high-frequency heating means constituting FIG. 2;

FIG. 10 is a side view of a main part of an example of a cathode ray tube used for describing the present invention.

FIG. 11 is a flowchart of a disassembly step in one embodiment of the present invention.

FIG. 12 is a sectional view of a principal part of a concept of a process of measuring an outer shape of a cathode ray tube in one embodiment of the present invention.

FIG. 13 is a sectional view of a principal part of a concept of a measurement process from a distance sensor to a fluorescent screen of a cathode ray tube in one embodiment of the present invention.

FIG. 14 shows a measurement of a cathode ray tube according to an embodiment of the present invention.
Flow chart of separation process

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor 2,90 Conveying pallet 3 X-axis direction positioning means (position determination) 4,7,9 Air cylinder 5,8,10 Plate 6 Y-axis direction positioning means (position determination) 11 Robot 12 Rotation driving means 13 Cutting tool (End mill) 14 X-axis direction sensor 15 Y-axis direction sensor 16 Z-axis direction sensor 50 Housing 51, 51A Cathode ray tube (cathode ray tube / CRT) 52 Chassis (control circuit unit) 53, 57 Printed wiring board 54 Antenna terminal plate 55 Speaker device 56 Tuner 58 Implosion prevention metal band (metal band) 59 Mounting bracket (tab) 60 Cutting groove 70 High frequency heating device (high frequency induction heating device) 70A Induction heating coil 71 Tab pressing means 72 CRT lifting means 74 Transport pallet 75 CRT support means (support member) 76 transport Let the transfer means 80 secure the glass 81 bonding material 91 through hole 92 Data carrier (data memory means) 93, 94 the distance sensor 95 measuring unit 100 television receiver

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Osamu Fujimoto 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Michio Hirano 1006 Odakadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. In-company (72) Inventor Kaoru Shimizu 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. (56) References JP-A-8-185801 (JP, A) JP-A-1-97348 (JP, A ) Hikaru 4-46342 (JP, U) JP-B-57-52693 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01J 9/50

Claims (12)

(57) [Claims] A first distance sensor and a second distance sensor are disposed on both sides of a panel portion of a cathode ray tube, respectively, and a distance from the first distance sensor to a first side surface of the panel and a second distance are provided. Measuring a distance from a sensor to a second side surface of the panel to determine an outer size of the panel portion of the cathode ray tube; Measuring the distance to the phosphor screen to determine whether or not a safety glass is provided on the front surface of the panel unit. 2. The cathode ray tube processing according to claim 1, further comprising the step of: separating the cathode ray tube having no safety glass from the front surface of the panel portion into a cathode ray tube having a safety glass. Method. 3. The method according to claim 2, further comprising the step of separating the cathode ray tube into a panel portion and a funnel portion. 4. A first and a second distance sensor are respectively arranged on both sides of a panel portion of a cathode ray tube so as to face each other, and a distance from the first distance sensor to a first side surface of the panel and a second distance are provided. Means for measuring a distance from a sensor to a second side surface of the panel to determine an outer size of the panel portion of the cathode ray tube; Means for measuring the distance to the phosphor screen and determining whether or not a safety glass is provided on the front surface of the panel unit. 5. An apparatus according to claim 4, wherein a laser beam distance sensor is used as the third distance sensor. 6. A laser light distance sensor as the first and second distance sensors.
A cathode ray tube discriminating apparatus as described in the above. 7. The following steps for reusing a cathode ray tube: (1) a step of applying a pressing load to an implosion preventing metal band wound around an outer periphery of a panel portion; and (2) the implosion preventing metal. Heating the band by high-frequency heating while applying a pressing load to remove the metal band for preventing implosion; and (3) first and second distance sensors are respectively arranged on both sides of the panel portion of the cathode ray tube so as to face each other. The distance from the first distance sensor to the first side surface of the panel and the distance from the second distance sensor to the second side surface of the panel are measured to determine the panel unit outer size of the cathode ray tube. (4) measuring a distance from a third distance sensor disposed opposite to the front surface of the panel unit to a fluorescent screen of the panel unit;
Determining whether or not a safety glass is provided on the front surface of the panel unit. 8. The waste video equipment according to claim 7, further comprising a step of separating a cathode ray tube having a safety glass on the front surface of the panel portion from a cathode ray tube having no safety glass. Processing method. 9. The method according to claim 8, further comprising the step of separating the cathode ray tube into a panel portion and a funnel portion. 10. The following steps for reusing video equipment to be discarded: (1) a housing containing a video display unit and a control circuit unit;
U-shaped at least one of the bottom, both sides, and top
Process of cutting into shape, or video display and control circuit
The bottom, both sides, and top of the housing
Any process of cutting and removing at least one surface
And one of the steps, (2) to support the front panel of the cathode ray tube, in a vertical direction
Lifting process; (3) implosion-prevention metal band wound around the outer periphery of the panel
And (4) applying a pressing load to the metal band for preventing implosion.
Heat the implosion preventing metal band by high frequency heating
Removing the implosion-preventing metal band; and (5) first and second distance sensors are respectively arranged on both sides of the panel portion of the cathode ray tube so as to face each other, and the first distance sensor is disposed on the first side of the panel from the first distance sensor. and distance to the sides of, and a distance from the second distance sensor to the second side of the panel is measured, and determining the panel outer size of the cathode ray tube, (6) to the panel portion front Measuring the distance from the third distance sensor disposed opposite to the phosphor screen of the panel unit,
Determining whether safety glass is provided on the front surface of the panel unit. 11. The waste video equipment according to claim 10, further comprising a step of separating a cathode ray tube having a safety glass on a front surface of the panel portion from a cathode ray tube having no safety glass. Processing method. 12. The method according to claim 11, further comprising the step of separating the cathode ray tube into a panel portion and a funnel portion.