JP3024559B2 - Dismantling method of metal band for preventing implosion of cathode ray tube - 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 video equipment (television receiver, personal computer, display monitor, etc.) to be discarded and reproduced, and more particularly to a cathode ray tube (CRT / CRT) constituting the video equipment. The present invention also relates to a method and an apparatus for disassembling an implosion-preventing metal band attached to a panel section.

[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, the above-described method using burner heating and water requires time for heating and removing the metal band. In addition, there was a risk that the automation of the facilities would be extensive.

An object of the present invention is to efficiently and automatically disassemble an implosion-preventing metal band wound around a panel portion of a cathode ray tube. We also aim to simplify the dismantling device.

[0006]

In order to solve the above problems, the present invention provides: (1) a method of applying a pressing load to an implosion preventing metal band;
A method for disassembling a metal band for preventing implosion of a cathode ray tube, wherein the metal band for preventing implosion is removed by heating with high frequency heating.

(2) A transport pallet on which a cathode ray tube is mounted, transport means for transporting the transport pallet, pressing means for applying a pressing load to the metal band for preventing implosion, and high frequency for heating the metal band for preventing implosion A disassembling apparatus for a metal band for preventing implosion of a cathode ray tube, comprising a heating means.

[0008] With the above configuration, the disassembly of the metal band for preventing implosion of the cathode ray tube can be efficiently automated with simple equipment. 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.

[0009]

DETAILED DESCRIPTION OF THE INVENTION According to the first aspect of the present invention, there is provided a method for disassembling a metal band for preventing implosion of a cathode ray tube, which comprises removing the metal band for preventing implosion by heating with high frequency. The disassembly of the metal band for preventing implosion of the cathode ray tube can be automated.

According to a third aspect of the present invention, the implosion preventing metal band is heated and removed by high frequency heating while applying a pressing load to the implosion preventing metal band. The metal band for preventing implosion of the cathode ray tube can be automated by disassembling the metal band for prevention.

According to a sixth aspect of the present invention, there is provided a metal fitting mounted on a metal band for preventing implosion by lifting a cathode ray tube mounted on a transport pallet while supporting a panel portion, placing the cathode ray tube in an induction heating coil of high frequency heating means. A method for disassembling the metal band for preventing implosion of a cathode ray tube, characterized in that the metal band for preventing implosion is removed by heating by high frequency heating while applying a pressing load to the cathode ray tube. Disassembly of metal bands can be automated. In addition, the separate reproduction process after disassembly is facilitated.

According to a seventh aspect of the present invention, there is provided a cathode wire comprising: a pressing means for applying a pressing load to the implosion preventing metal band; and a high frequency heating means for heating the implosion preventing metal band. It is a device for dismantling a metal band for preventing implosion of a tube, and the dismantling of a metal band for preventing implosion of a cathode ray tube can be automated with simple equipment.

According to a tenth aspect of the present invention, there is provided a transport pallet on which a cathode ray tube is mounted, transport means for transporting the transport pallet, pressing means for applying a pressing load to a metal band for preventing implosion, A high frequency heating means for heating the metal band is provided, which is an apparatus for disassembling a metal band for preventing implosion of a cathode ray tube. Can be processed. In addition, the separate reproduction process after disassembly is facilitated.

[0014]

DETAILED 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 conceptual diagram showing a process of disassembling a metal band for preventing implosion of a cathode ray tube according to an embodiment of the present invention. FIG.

FIG. 2 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. 3 is a circuit diagram of an equivalent circuit of high-frequency heating means constituting FIG. 2, and FIG. FIG. 5 is a flow chart (flowchart) of a disassembling process according to an embodiment of the present invention.

A cathode ray tube 1 shown in FIG. 4 includes a panel portion, a funnel portion, a neck portion, an implosion-preventing metal band 2 wound around the panel portion, and an implosion-preventing metal band. Mounting brackets (tabs) 3 attached to four corners by spot welding are provided. Since the internal configuration of the cathode ray tube is not the subject of the present invention, the description is omitted.

1 and 2, reference numeral 10 denotes a high-frequency heating device (specifically, a high-frequency induction heating device), and 11 denotes a mounting bracket (tab) 3 for heating the metal band for preventing implosion.
Tab pressing means for constantly pressing 4 kg to 6 kg
Is an induction heating coil for heating the metal band for preventing implosion from 350 degrees Celsius to 500 degrees Celsius, and 12 is a cathode ray tube (CRT) connected to the inside of the induction heating coil 10A through an opening provided at the center of the transport pallet 21. C to lift to a predetermined position
RT lifting means, 21 is a transport pallet, 22 is CRT support means erected on the CRT mounting surface side of the transport pallet 21, and is composed of four pin members.
Pallet transfer means, such as a transfer conveyor, for transferring the pallet by a predetermined constant pitch.

Next, a procedure of disassembling a metal band for preventing implosion of a general cathode ray tube will be described. FIG. 5 shows a flowchart of one embodiment of the disassembly procedure.

The cathode ray tube 1 mounted on the transport pallet 21 while supporting the panel surface is first fed at a predetermined pitch and is located below the high-frequency heating device 10.

Thereafter, the cathode ray tube 1 is lifted to a predetermined position in the induction heating coil 10A by the CRT lifting means 12. Subsequently, the tab pressing means 11 is lowered, and the four mounting brackets (tabs) 3 are each 4 kg.
Pressing with a pressing force of 6 kg.

Next, the high frequency heating device 10 is operated to heat the implosion preventing metal band 2 to 350 to 500 degrees Celsius. The operating conditions of the high-frequency heating device in this case include:
180V, 200A was applied at 1500-2000 Hz for 15 seconds.

By this heating operation, the metal band 2 for preventing implosion rises at high speed and expands. As a result, a "removable state", which is the opposite state of the shrink fit, is obtained. In addition, the heat conduction from the implosion-preventing metal band 2 reduces the shear adhesive strength of the resin impregnated in the noncombustible buffer material or the undercoated resin such as an acrylic resin, a polyester resin or a urethane resin. Finally, the adhesive force of the resin falls below the pressing force, and the implosion preventing metal band 2 is peeled off from the panel portion. The falling implosion-prevention metal band is indicated by a dashed 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 21 in the next step.

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

FIG. 5 shows two examples of procedures for removing the implosion preventing metal band 2 from the transport pallet 21. 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. 3 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. The lower limit output may be about 2 KW.

As the CRT lifting means, any means such as an air cylinder or a robot may be used. The same applies to the transfer means of the transport pallet, which may be arbitrarily implemented, such as a roller conveyor, a belt conveyor, a roller conveyor, a chain conveyor, and a pusher system using a fluid cylinder.

Further, the tab pressing means is also optional such as an air cylinder or a compression coil spring. Further, the pressing load may be 4 kg or more per one place, and may be about 100 kg which does not break the cathode ray tube. Preferably 4 to 4
It is about 0 kg.

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

[0031]

As described above, the method and apparatus for disassembling a metal band for preventing implosion of a cathode ray tube according to the present invention can automate the dismantling operation by the above-mentioned structure. In addition, the separate reproduction process after disassembly is facilitated. As a result, the recycling rate has improved,
Useful for environmental conservation and effective use of resources.

[Brief description of the drawings]

FIG. 1 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. 2 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. 3 is a circuit diagram of an equivalent circuit of the high-frequency heating means constituting FIG. 2;

FIG. 4 is a side view of a main part of an example of a cathode ray tube used for describing the present invention.

FIG. 5 is a flowchart of a disassembly step in one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 CRT (cathode ray tube / CRT) 2 Metal band (metal band) for preventing implosion 3 Mounting bracket (tab) 10 High-frequency heating device (high-frequency induction heating device) 10A Induction heating coil 11 Tab pressing means 12 CRT lifting means 21 Transport pallet 22 CRT support means (support member) 30 Transport pallet transfer means

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiroshi Matsuda 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01J 9/50 H01J 9/24

Claims (2)

(57) [Claims] 1. A method of disassembling a cathode ray tube and an implosion-preventing metal band wound around the cathode ray tube, comprising: (a) on a transport pallet having a through hole in a central portion of a main surface; (B) supporting the cathode ray tube through the through-hole, lifting the cathode ray tube in the vertical direction, and winding the high frequency heating means in an annular shape.
Placing the metal band for preventing implosion in a heating coil
A step, a step of applying a pressing load to the (c) the implosion preventive metal band, sequentially performed and a step of high frequency heating while applying a pressing load in (d) of the implosion preventive metal band, the implosion Expand the metal band for prevention
The impregnating metal band is softened to soften the
A method of disassembling a metal band for preventing implosion of a cathode ray tube, wherein the step (d) is continued until the metal band comes off the cathode ray tube. 2. A method for disassembling a cathode ray tube and a metal band for preventing implosion wound around the cathode ray tube, wherein the induction heating coil is annularly wound around the high frequency heating means.
After placing the metal band for preventing implosion,
High-frequency heating while applying a pressing load to the metal band
Thereby, the metal band for preventing implosion is expanded, and
Softens the adhesive of the non-combustible cushioning material to prevent the implosion
A metal band for preventing implosion of the cathode ray tube, wherein the metal band is detached from the cathode ray tube.