JP3281552B2 - Metal band removal method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Table of Contents] The present invention will be described in the following order. Technical field to which the invention pertains Conventional technology (FIGS. 6 to 8) Problems to be solved by the invention (FIGS. 9 to 10 (F)) Means for Solving the Problems Embodiments of the Invention (1) CRT equipment Dismantling procedure (FIGS. 1 and 2) (2) Configuration of explosion-proof band removal device (FIGS. 3 to 5) (3) Operation of embodiment (4) Effects of embodiment (5) Other embodiments Effects of the invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing a metal band, for example, a discarded cathode ray tube (C).
It is suitable for use in a method and a device for removing an explosion-proof band used for disassembling an RT (Cathode Ray Tube) device.

[0003]

2. Description of the Related Art In recent years, research on recycling of used products has been carried out in various fields along with the worsening of environmental destruction.
At present, the applicant of the present invention is conducting research on the reuse of discarded CRT equipment.

FIGS. 6 and 7 show the configuration of a general CRT device 1. FIG. As is clear from FIGS. 6 and 7, in the general CRT device 1, various operation switches 3 and the like are disposed on the front side of the cabinet 2, and the speaker 4 and the circuit board 5 are provided inside the cabinet 2. And a CRT 6 are fixedly arranged at predetermined positions.
Each of these operation switches 3, speaker 4, and CRT 6
Are electrically connected to the circuit board 5 via a cable with a connector.

In this case, in the CRT 6, as shown in FIG. 8, a panel portion 6A made of a substantially pure glass material is provided.
It is formed by welding a funnel portion 6B made of a glass material mixed with about 40% of lead using frit glass (solder glass). Further, a metal explosion-proof band 7 is wound around a portion of the CRT 6 where the panel portion 6A and the funnel portion 6B are joined via an explosion-proof band tape (not shown).
Further, on the back of the CRT 6, an electron gun 8 and a deflection yoke 9 are provided.
In addition, an aperture grille 10 is disposed inside the inside, and pigments of blue, red and green phosphors 11 are regularly applied to a phosphor screen formed on an inner surface of the panel portion 6A.

[0006] Therefore, when considering the reuse of the CRT device 1, the CRT 6 mainly made of glass material is particularly easy to reuse. Therefore, recently, the CRT 6 of the CRT device 1 which has been discarded has recently been taken out from the cabinet 2. The glass material is recovered by crushing and reused.

[0007]

Among the operations for recovering the glass material of the CRT 6, the operation of removing the explosion-proof band 7 wound around the outer periphery of the CRT 6 via an explosion-proof band tape from the CRT 6 is described below. A predetermined current is applied to the metal explosion-proof band 7 to
Has been proposed in which the explosion-proof band 7 is removed from the CRT 6 in this state.

That is, as shown in FIG. 9, the explosion-proof band 7 wound on the CRT 6 has a panel portion 6 of the CRT 6.
A (bracket) 7A-corresponding to each corner in the portion where the A and the funnel 6B are joined.
7D is integrally formed. Each bracket 7A and 7C (7B) on the diagonal line of the explosion-proof band 7
And 7D) are connected to each other by clip-type electrode terminals 20 and 2.
1 are detachably inserted.

A power supply 22 is conductively connected to each of the electrode terminal portions 20 and 21.
After the current applied to the explosion-proof band 7 through the electrode passes through the entire explosion-proof band 7, the current returns to the power supply 22 via the electrode terminal 21. Thus, CRT6
While the explosion-proof band 7 with the outer periphery of the explosion-proof band 7 being heated and expanded as a whole,
By pressing T6 in the direction indicated by the arrow p, the explosion-proof band 7 can be easily removed from the CRT 6.

According to this method, even if the thickness of the explosion-proof band 7 varies depending on the model of the CRT device 1 or the manufacturer, etc., the degree of raising the temperature of the explosion-proof band 7 depends on the panel of the CRT 6. Since the power is controlled substantially according to the size of the panel surface of the CRT, the explosion-proof band 7 is expanded substantially by heating and expanding to almost the same state regardless of the model or manufacturer, since the explosion-proof band 7 is substantially constant according to the size of the CRT panel. Can be easily removed from.

However, according to such a method, depending on the shape of the explosion-proof band 7, there is a possibility that heat expansion may occur locally. Specifically, as shown in FIGS. 10A to 10F, when the slit 7E is formed on the explosion-proof band 7 (FIG. 10A), when the overlap 7F occurs (FIG. 10 (A)). B)), when there is a partial weld 7G (FIG. 10C), and when the opening 7H is drilled (FIG. 10).
(D)) Furthermore, a bracket 7A having a changed thickness.
(7B-7D) (FIG. 10 (E)) and the bracket 7
When there is a contact portion 7I (FIG. 10F) between A (7B to 7D) and the electrode terminal portion 20 (21), each portion is excessively heated locally.

As a result of the local high temperature state of the explosion-proof band 7, there is a possibility that the explosion-proof band 7 will be cut and the explosion-proof band 7 will be cut. In this case, when the explosion-proof band 7 is cut because the explosion-proof band tape is attached between the CRT 6 and the explosion-proof band tape, the explosion-proof band tape is peeled off from the explosion-proof band 7 and adheres to the CRT 6, or the glass material of the CRT 6 is peeled off. There is a possibility that the explosion-proof band 7 may adhere to the band 7, and as a result, there is a problem that it is very difficult to remove the explosion-proof band 7 from the CRT 6.

The present invention has been made in view of the above points, and it is an object of the present invention to propose a metal band removing method and an apparatus for removing an explosion-proof band from a cathode ray tube efficiently and reliably regardless of the type of the cathode ray tube. Things.

[0014]

According to the present invention, a metal band is detached from a cathode ray tube on which a metal band integrally formed with a plurality of projections for mounting a cabinet is wound. In the metal band removing method, the metal band is heated and expanded by applying a predetermined current to the metal band while blowing gas or liquid on the whole or a part of the metal band while holding each overhang of the metal band. Then, by pressing only the cathode ray tube while holding the metal band, the metal band is detached from the cathode ray tube.

[0015] From a cathode ray tube formed by winding a metal band integrally formed with a plurality of projections for attaching a cabinet,
In a metal band removing device used for removing a metal band, a holding means for holding each projecting portion of the metal band, a blowing means for blowing gas or liquid to the whole or a part of the metal band, A power supply for supplying an electric current, and first and second electrode terminals provided at positions respectively conductively connected to the power supply and provided in contact with the pair of projecting portions of the cathode ray tube on the diagonal line of the cathode ray tube, respectively. And a pressing means for pressing only the cathode ray tube, wherein the spraying means blows a gas or a liquid on the whole or a part of the metal band, and the power supply applies a current to the metal band via the first and second electrode terminals. After the metal band is heated and expanded, the holding means holds each overhanging portion of the metal band, and the pressing means presses only the cathode ray tube, so that the metal is removed from the cathode ray tube. So that removal of the band.

[0016] The metal band thus heated can be cooled as a whole and prevented from being excessively heated locally, so that the metal band can be heated and expanded without being cut. Can be.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

(1) Disassembly processing procedure of CRT equipment FIG. 1 shows a disassembly processing procedure RT1 of the CRT equipment 1 and a CR
When the T device 1 is transported to the dismantling processing line, the CRT
The disassembly processing procedure RT1 of the device 1 is started (step SP1).
First, the dimensions of the front surface of the cabinet 2 of the CRT device 1 and the tube surface (panel surface) 6AX of the CRT 6 are measured (step SP2).

Next, based on the measurement result, the front portion of the cabinet 2 to which the CRT 6 is fixed is separated from other portions, and the front portion of the separated cabinet 2 (hereinafter, referred to as a front cabinet) is integrated with the CR.
Take T6 out of cabinet 2 (step SP
3). Subsequently, the electron gun 8 is cut off and separated from the CRT 6, and the deflection yoke 9 and the like are removed. Thereafter, the front cabinet is removed from the CRT 6 (step SP4).

Next, as shown in FIG. 2, the CRT 6 is cut and separated into a panel portion 6A, a funnel portion 6B, and a joint portion (hereinafter, referred to as an aperture grill attachment portion) 6C between the panel portion 6A and the funnel portion 6B. (Step SP5). Further, thereafter, the glass material is recovered by crushing the panel portion 6A into a cullet shape (step SP6), and the lead glass material is recovered by crushing the funnel portion 6B into a cullet shape (step SP8) (step SP8). Step SP9). On the other hand, the aperture grill attachment portion 6C is crushed into a pallet (step SP1).
0), the glass material and the lead glass material are collected by sorting the fragments into a glass material and a lead glass material (step SP11) (step SP7 and step SP9). As a result, a glass material and a lead glass material can be efficiently collected from the CRT 6 of the discarded CRT device 1 (step SP12).

Hereinafter, in the subroutine SP4 of the processing program RT1 shown in FIG. 1, after removing the front cabinet from the CRT 6, the explosion-proof band removing device used to remove the explosion-proof band 7 wound on the CRT 6 from the CRT 6 will be described. explain.

(2) Structure of the explosion-proof band removing device In FIG. 3, in which parts corresponding to those in FIG. 10 are assigned the same reference numerals, in the explosion-proof band removing device 30, each bracket 7A of the explosion-proof band 7 wound around the CRT 6 is used. Clamping units 31 to 34 are provided at predetermined positions facing to 7D, respectively, so as to be movable on corresponding rail members (not shown) in directions indicated by arrows a to d or in directions opposite thereto.

Air blow units 35 to 38 are respectively provided at predetermined positions facing each side of the panel surface 6AX of the CRT 6 in the horizontal and vertical directions, and each of the air blow units 35 to 38 has a plurality of air blow nozzles. 35A to 38A are attached so as to face the explosion-proof band 7 along each side of the panel surface 6AX. Each of the air blow units 35 to 38 is connected to an air source (not shown) via a pipe (not shown), and air at room temperature is supplied from the air source.

As shown in FIGS. 4 and 5, in the explosion-proof band removing device 30, a CRT raising portion 40 as a pressing means is provided at a predetermined position below the CRT 6.
The CRT lifting / lowering unit 40 has an actuator 41, from which a back-up 42 can be raised / lowered via a drive shaft 41A in a direction indicated by an arrow z or in a direction opposite thereto. This backup 42
Two CRT holders 43A and 43B are provided on the upper side, and the CRT 6 can be held with the panel surface 6AX of the CRT 6 in contact with the CRT holders 43A and 43B.

Each of the clamp units 31 to 34 has upper protruding portions 31A to 34A and lower protruding portions 31B to 34B formed at the respective front ends thereof so that the front ends thereof facing the CRT 6 are U-shaped. A through hole (not shown) is formed in each of the upper protrusions 31A to 34A, and cylinders 45 to 48 are mounted on the upper protrusions 31A to 34A, respectively. Further, drive shafts 45A to 48A of the cylinders 45 to 48 protrude through the respective through holes, and metal pressing members 50 to 53 are provided at the tips of the drive shafts 45A to 48A, respectively.

The pressing members 50 to 53 have contact surfaces 50A to 53A that contact the upper surfaces 31BX to 34BX of the lower protruding portions 31B to 34B, respectively.
Based on the drive control of the upper protruding portions 31A-34.
A and the corresponding lower protruding portions 31B to 34B are vertically moved in the direction indicated by the arrow z or in the direction opposite thereto.

In the clamp units 31 and 33 of the clamp units 31 to 34, the first and the second
Each of the holding members 51 and 53 as electrode terminals has a hollow portion (not shown) formed therein, and two tubes 54A and 54 are provided so as to communicate with each hollow portion.
B and 55A and 55B are attached (FIG. 3). In this case, cold water (not shown) flows from a water supply source (not shown) via one tube 54A and 54B, cools the pressing members 51 and 53, and then flows through the other tubes 55A and 55B. Leaked.

Electric wires 57 and 58 drawn from a power source 56 are connected to the respective holding members 51 and 53 in a conductive manner, and the current supplied from the power source 56 to the explosion-proof band 7 through the holding member 51 is applied to the explosion-proof band. After passing through the entire portion 7, the power returns to the power source 56 again via the pressing member 53.

Further, air blow portions 59 and 60 are provided at predetermined positions of the clamp units 31 and 33, respectively, and air blow nozzles 59A and 60A are provided at the respective air blow portions 59 and 60 respectively with the lower protruding portions 31B and 33B. It is attached so that air can be jetted near the upper surfaces 31BX and 33BX. The air blow sections 59 and 60 are also connected to the above-described air source (not shown).

(3) Operation of Embodiment In the above configuration, the CRT on which the explosion-proof band 7 is wound
6 is conveyed to the explosion-proof band removing device 30 and is placed on the back-up 42 of the CRT elevating unit 40 in the explosion-proof band removing device 30. Then back up 42
The CRT 6 placed above is moved to a predetermined position by the actuator 41.

Next, the clamp units 31 to 34 respectively hold the pressing members 50 to 53 to the lower protruding portions 31 B to 34.
The brackets 7A to 7D of the explosion-proof band 7 are respectively slid in the directions indicated by arrows a to d while being separated from the upper surfaces 31BX to 34BX of B, so that the holding members 50 to 53 and the corresponding lower protruding portions 31B are respectively provided. ~ 34B. After this, each clamp unit 31-
34, the brackets 7A to 7A of the corresponding explosion-proof band 7 are lowered by lowering the holding members 50 to 53, respectively.
7D holding members 50 to 53 and corresponding lower protrusions 3
The explosion-proof band 7 is fixed and held between 1B and 34B.

Subsequently, each of the air blow units 35 to 38
By blowing air from the air blow nozzles 35A to 38A, the air is blown to almost the entire explosion-proof band 7. In addition, the air blow portions 59 and 60 also eject air from the air blow nozzles 59A and 60A, respectively, so that the pressing member 51 and the lower protruding portion 31 are formed.
Air is blown onto the bracket 7A of the explosion-proof band 7 held between B and the bracket 7C of the explosion-proof band 7 held between the holding member 53 and the lower protruding portion 33B.
Further, each holding member 5 of the clamp units 31 and 33
A hollow portion (not shown) in each of the tubes 0 and 52 has a tube 54.
Cold water is supplied via A and 55A.

In this state, the clamp unit 31
When an electric current is supplied from a power supply 56 that is electrically connected to the explosion-proof band 33, the entire explosion-proof band 7 is heated. At this time, air is blown to almost the entire explosion-proof band 7,
The heated explosion-proof band 7 is entirely cooled. As a result, it is possible to prevent the explosion-proof band 7 from being excessively locally heated.

The brackets 7A and 7A of the explosion-proof band 7
By flowing the cold water into the holding members 51 and 53 which respectively conduct with C, the contact portions between the holding members 51 and 53 and the corresponding brackets 7A and 7C can be prevented from being excessively heated. . Therefore, it is possible to avoid the occurrence of a local high-temperature condition in the heated explosion-proof band 7, and as a result, it is possible to heat and expand the explosion-proof band 7 while preventing the explosion-proof band 7 from being cut. .

When the back-up 42 is moved upward by the actuator 41 of the CRT lifting / lowering section 40 in the direction indicated by the arrow z in the state where the explosion-proof band 7 has been heated and expanded as described above, the explosion-proof band 7 is moved to the clamp units 31 to 34. CRT 6 is explosion-proof band 7
, And only the CRT 6 is pushed up integrally with the backup 42.

Next, the power supply (not shown) stops supplying power, the air blow units 35 to 38 and the air blow units 59 and 60 stop injecting air, and further, a water supply source (not shown). Stops the supply of cold water. Thereafter, the CRT 6 is transferred to the next processing step while being held by the CRT holding / transfer section (not shown).

The explosion-proof band 7 is held by an explosion-proof band holding / transfer section (not shown), and the clamp units 31 to 34 are fixed and held by raising the holding members 50 to 53, respectively. It is released. Thereafter, the explosion-proof band holding and transferring section transfers the explosion-proof band 7 to a predetermined position while holding the explosion-proof band 7,
Each of the clamp units 31 to 34 slides in a direction opposite to the directions indicated by arrows a to d to a position away from the CRT ascent unit 40.

(4) Effects of the Embodiment According to the above configuration, the explosion-proof band 7 on which the CRT 6 is wound.
When the current is supplied to the explosion-proof band 7, air is blown along the outer circumference of the
Air is also blown onto the brackets 7A and 7C which come into contact with the explosion-proof bands 7 and 53, respectively, and cold water is supplied to the holding members 51 and 53. Can be prevented from being excessively heated, and as a result, the explosion-proof band 7 can be heated and expanded without being cut,
Thus, regardless of the type of CRT, the explosion-proof band 7 is CR
It can be efficiently and reliably removed from T6.

(5) Other Embodiments In the above-described embodiment, clamp units 31 to 34 corresponding to the respective brackets 7A to 7D of the explosion-proof band 7 are provided as holding means, and the respective clamp units 31 to 34 are provided.
Although the case where each of the brackets 7A to 7D is fixed and held has been described with reference to 34, the present invention is not limited to this.
In addition, each of the brackets 7A to 7D
May be fixedly held.

In the above embodiment, a plurality of air blow units 35 to 38 and air blow sections 59 and 60 are provided at predetermined positions on the outer peripheral side of the explosion-proof band 7 as spraying means.
The air blow units 35 to 38 and the air blow sections 59 and 60 are used to blow air at room temperature on the whole or a part of the explosion-proof band 7, but the present invention is not limited to this. In addition, by blowing gas or liquid onto the whole or a part of the explosion-proof band 7 using various spraying means, the heated explosion-proof band 7 is cooled as a whole and is prevented from being excessively locally heated. You may do it.

In this case, as the gas or liquid to be blown, not only air at normal temperature, but also low-temperature air and other various gases, and various liquids such as water and oil at a predetermined temperature may be used.

[0042]

As described above, according to the present invention, a metal band removing method for removing a metal band from a cathode ray tube wound with a metal band integrally formed with a plurality of projections for attaching a cabinet and a method for removing the metal band are provided. In the apparatus, the metal band was heated and expanded by applying a predetermined current to the metal band while blowing gas or liquid on the whole or a part of the metal band while holding each overhang of the metal band. After that, by pressing only the cathode ray tube while holding the metal band and removing the metal band from the cathode ray tube, the heated metal band is entirely cooled and locally heated excessively. Can be prevented, and as a result, the metal band can be heated and expanded without being cut, and thus the metal band can be removed from the cathode ray tube regardless of the type of the cathode ray tube. It can be removed rate well and reliably.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a disassembly processing procedure of a CRT device.

FIG. 2 is a schematic sectional view showing a state of a CRT divided into three parts.

FIG. 3 is a schematic plan view showing a configuration of an explosion-proof band removing device according to an embodiment.

FIG. 4 is a schematic side view showing a configuration of an explosion-proof band removing device according to an embodiment.

FIG. 5 is a schematic diagram illustrating a configuration of an explosion-proof band removing device according to an embodiment.

FIG. 6 is a schematic diagram illustrating a configuration of a conventional CRT device.

FIG. 7 is a schematic diagram illustrating an internal configuration of a conventional CRT device.

FIG. 8 is a partial cross-sectional view showing a configuration of a conventional CRT.

FIG. 9 is a schematic diagram for explaining a conventional explosion-proof band removing method.

FIG. 10 is a partial schematic diagram for explaining a local thermal expansion portion generated in the explosion-proof band.

[Description of Signs] 1 ... CRT device, 2 ... cabinet, 6 ... CR
T, 7 ... explosion-proof band, 7A-7D ... bracket, 3
0 Explosion-proof band removal device, 31 to 34 Clamp unit, 35 to 38 Air blow unit, 40
… CRT elevating section, 50-53… Holding member, 56…
Power supply, 59, 60 ... Air blow unit.

Continued on the front page (72) Inventor Kazutaka Kimura 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation (72) Inventor Koji Kanehira 6-35, 7-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo (56) References JP-A-5-151898 (JP, A) JP-A-9-115446 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01J 9/50

Claims (4)

(57) [Claims] 1. A cathode ray tube formed by winding a metal band integrally formed with a plurality of projecting portions for mounting a cabinet.
In the metal band removing method for removing the metal band, a predetermined current is applied to the metal band while blowing gas or liquid on the whole or a part of the metal band while holding each of the overhangs of the metal band. A first step of heating and expanding the metal band by flowing, and a second step of removing the metal band from the cathode ray tube by pressing only the cathode ray tube while holding the metal band that has been heated and expanded. A method for removing a metal band, comprising the steps of: 2. In the first step, the gas or the liquid is sprayed together with the metal band on a portion of the cathode ray tube which holds a pair of the overhang portions located diagonally to each other. The method for removing a metal band according to claim 1. 3. A cathode ray tube formed by winding a metal band integrally formed with a plurality of projecting portions for attaching a cabinet.
In a metal band removing device used for removing the metal band, holding means for holding the respective projecting portions of the metal band, spraying means for blowing gas or liquid on the whole or a part of the metal band, A power supply for supplying a predetermined current to the metal band; and a power supply that is electrically connected to the power supply, and is provided at a portion of the holding unit that comes into contact with each of the pair of overhangs positioned diagonally to each other of the cathode ray tube. First and second electrode terminals, and pressing means for pressing only the cathode ray tube, wherein the spraying means blows the gas or the liquid on the whole or a part of the metal band, and the power supply is the After the current is caused to flow through the metal band via the first and second electrode terminals to cause the metal band to expand by heating, the holding means is connected to the metal band. While holding each said projecting portion of the said pressing means by pressing only said cathode ray tube,
A metal band removing device for removing the metal band from the cathode ray tube. 4. The spraying means, together with the metal band,
4. The metal band removing device according to claim 3, wherein the gas or the liquid is sprayed on the first and second electrode terminals, respectively.