JP3424531B2 - Cathode ray tube splitting method and splitting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disassembling apparatus for a discarded / reproduced video device (television receiver, personal computer, display monitor, etc.), and more particularly, to a video device. The present invention relates to a method and a device for dividing a panel portion and a funnel portion of a cathode ray tube (also referred to as a CRT / CRT). 2. Description of the Related Art A cathode ray tube constituting a waste television or the like for the purpose of effective use of resources and preservation of the global environment is disassembled into a panel portion and a funnel portion, and is separated and regenerated (recycled) for each constituent material. Is done. A method of dividing a cathode ray tube into a panel portion and a funnel portion is disclosed in, for example,
JP-A-208525 has been proposed. In this case, the joint between the panel glass and the funnel glass is detected, and the entire periphery is cut with a disk cutter (grinding stone or diamond wheel). In Japanese Patent Application Laid-Open No. 7-57641,
The frit glass at the joint is immersed in about 40 ° C., 10% nitric acid, and uniformly dissolved within a range of about 1 to 2 mm from the side wall of the valve. Then, about 45 ° C. hot water and about 10 ° C. cold water are alternately applied to the entire bulb, This is to generate a crack that goes around the frit glass part and cut the panel part and the funnel part. [0004] However, Japanese Patent Application Laid-Open No.
The method disclosed in Japanese Patent Publication No. 2-208525 discloses a disk cutter.
It needs to be replaced due to exhaustion, making continuous operation difficult 24 hours a day and night. In addition, a large amount of glass dust is generated when the cathode ray tube is cut, and even if the glass dust is collected by a dust collector or the like,
Suspended glass dust may cause occupational health problems. In addition, the filter built in the dust collector etc.
Is severely clogged, and the labor and cost involved in replacing the filter are significant. Japanese Patent Application Laid-Open No. 7-57641 is a wet method, and requires solvent management and solvent disposal equipment for preventing pollution. Further, the processing time per unit is long, which may increase the cost. An object of the present invention is to automate the division of a cathode ray tube in a dry manner and efficiently, and to make the working environment sounder. [0007] In order to solve the above-mentioned problems , a splitting device for a cathode ray tube according to the present invention is provided.
A transport pallet in which an elastic member is fitted to a peripheral portion of the through hole;
Transfer means for transferring the transfer pallet;
At the same time as raising and lowering the cathode ray tube mounted on the
A first elevating means for rotating the first elevating means,
The cathode ray tube lifted to a predetermined height.
Either V-groove processing or scratch processing near the part
Processing means for performing one processing, and the transfer means after the processing
Cathode wire mounted on the transport pallet transferred by
A second elevating means for elevating and lowering the pipe; and
V-shaped groove of the cathode ray tube lifted to a predetermined height
Means for spliced metal wire around the cathode ray tube in the processing unit or the scratched portion, and a high frequency heating means for heating the metal wire <br/>, the high-frequency heating hands
With the metal wire heated by the step, the V-shaped groove processing part or
Is subjected to thermal shock to the scratched part,
The cathode ray tube divided into the
Ri is obtained by so as to transfer the fractionation step, Rutotomo automate efficiently division of the cathode ray tube by such configuration <br/> formed
Which fractionation regeneration processing after dismantling and can be easily carried out in
It is . As a result, the effect of improving the recycling rate and contributing to environmental conservation and effective use of resources can be obtained.
Things. [0008] A first aspect of the present invention is a means for adhering any one of a metal wire, a metal plate and a metal frame around a cathode ray tube; The cathode ray tube splitting device is provided with a high frequency heating means for heating, and can efficiently automate the splitting of the cathode ray tube and facilitate the separation and regeneration process after disassembly. Further, the second invention is a splitting device for a cathode ray tube according to the first invention, characterized in that the device is provided with one of V groove processing and scratch processing. The division position can be determined more accurately. . Further, a third invention provides a cathode ray tube splitting device according to the second invention, further comprising a coolant supply means for supplying either one of cold water or cold air. With this, the division processing speed is improved. [0011] Further, a fourth invention provides a transportation pallet,
A cathode ray tube lifting means for supporting a surface of the cathode ray tube mounted on the transport pallet and lifting the cathode ray tube to a predetermined height; and a metal wire, a metal plate, and a metal frame around the cathode ray tube. A cathode ray tube splitting device comprising an abutting means and a high-frequency heating means for heating the metal member. The splitting of the cathode ray tube can be efficiently automated, and the separation and regeneration process after disassembly can be easily performed. To Further, a fifth invention provides a transportation pallet,
Transport means for transporting the transport pallet; cathode ray tube lifting means for supporting the surface of the cathode ray tube mounted on the transport pallet and lifting the same to a predetermined height; and metal wires, metal plates, and metal around the cathode ray tube. A cathode ray tube splitting device characterized by comprising a means for abutting any one of the frames and a high frequency heating means for heating the metal member, thereby efficiently and efficiently dividing the cathode ray tube. It facilitates the separate regeneration process after dismantling. Further, in a sixth aspect of the present invention, a wound is made around the cathode ray tube, and then one of a metal wire, a metal plate and a metal frame is attached to the vicinity of the wound. The metal member is subjected to high-frequency heating, and further, a coolant is supplied to a heating section of the cathode ray tube to divide the cathode ray tube into a panel portion and a funnel portion. The division of pipes can be efficiently automated and the separation and regeneration process after dismantling is facilitated. An embodiment of the present invention will be described below with reference to the drawings. For convenience, a video device is shown by an example of a television receiver. (Embodiment) FIG. 1 is a conceptual configuration diagram of a process of dividing a cathode ray tube into a panel portion and a funnel portion according to an embodiment of the present invention. FIG. . FIG. 2 is a perspective view of a main part of a splitting device of a cathode ray tube according to an embodiment of the present invention. FIG. 3 is a plan view showing a state in which the cathode ray tube split wire (metal wire) of the splitting device of the present invention is expanded around the cathode ray tube. FIG. 4 is a plan view showing a state in which the CRT split wire of the split device of the present invention is contracted around the cathode ray tube. FIG. 5 is a circuit diagram of an equivalent circuit of the high-frequency heating means included in FIG. FIG.
3 shows a flow chart (flowchart) of the dividing step in one embodiment of the present invention. In FIGS. 1 and 2, reference numeral 5 denotes a diameter of 5-6.
An inch, a diamond cutter 6 having a thickness of about 0.2 mm to 1 mm is a first cathode ray tube elevating unit, which raises and lowers the cathode ray tube and rotates it at a predetermined speed. Reference numeral 10 denotes a high-frequency heating device (specifically, a high-frequency induction heating device). 10A is an induction heating coil for heating the CRT split wire to 350 to 500 degrees Celsius. 11 is a CRT split wire,
It is wrapped around a cathode ray tube and is heated to 350 to 500 degrees Celsius by a high-frequency heating device to transfer heat to the cathode ray tube. Reference numeral 12 denotes a CRT split wire-a cylinder for expansion and contraction.
The CRT split wire is moved toward or away from (close to or apart from) the cathode ray tube. 13 is a wire tension cylinder, CR
The T-split wire is brought into close contact with the periphery of the cathode ray tube. Reference numeral 20 denotes a CRT lifting means which lifts a cathode ray tube (CRT) to a predetermined position in the induction heating coil 10A through an opening provided in the center of the transport pallet 21. Reference numeral 21 denotes a transfer pallet, and 30 denotes a transfer pallet transfer means for transferring the transfer pallet 21 at a predetermined constant pitch, for example, a transfer conveyor. Next, a procedure for dividing the cathode ray tube into a panel section 1b and a funnel section 1a will be described. FIG. 6 shows a flowchart of one embodiment of the dividing procedure. The cathode ray tube 1 mounted on the transport pallet 21 with the panel surface supported is first moved by a predetermined pitch and sent to the cathode ray tube splitting groove processing device 40. At this position, the first cathode ray tube elevating unit 6 sucks the panel surface of the cathode ray tube and raises it to a fixed position. Thereafter, the cathode ray tube is rotated at a constant speed. Next, while rotating the diamond cutter 5 at several thousands to tens of thousands of RPM by the spindle motor 4, the diamond cutter 5 is pressed against the vicinity of the frit portion of the cathode ray tube (the joint portion between the panel portion 1b and the funnel portion 1a). , Depth 0.1mm ~
Insert a 0.5 mm V-shaped groove. That is, a damage process for promoting cracks due to a thermal shock in the next step is formed on the entire circumference of the cathode ray tube. FIG. 1 shows an example in which the diamond cutter 5 is brought into contact with the peripheral surface of the cathode ray tube 1 in two directions. Naturally, diamond cutter
Reference numeral 5 follows the rotation of the cathode ray tube 1 and always contacts the peripheral surface.
At the time of V-shaped groove processing, it is desirable to spray a coolant such as water or cold air onto the processed portion. Instead of the V-shaped groove processing, a scratch processing may be performed on the diamond cone as in the case of glass cutting. After the V-groove processing, the rotation of the cathode ray tube is stopped, the first cathode ray tube lifting / lowering unit 6 is lowered, the cathode ray tube 1 is placed on the transport pallet 21, and the cathode ray tube dividing device of the next station is set. Transfer to 50. The cathode ray tube 1 located below the high-frequency heating device 10 is lifted to a predetermined position in the induction heating coil 10A by the second CRT lifting / lowering unit 20. Next, the CRT split wires arranged at four locations--the cylinders for expansion and contraction--operate to clamp the four corners of the cathode ray tube 1 via the CRT split wire-11 cathode ray tube 1. At this time, CRT
Since the split wire 11 is not yet in close contact with the cathode ray tube, the wire-drawing cylinder 13 is operated to pull the CRT split wire 11 to remove slack, and to attach the CRT split wire 11 to the cathode ray tube ( Contact). in this case,
The position where the CRT split wire 11 orbits the cathode ray tube 1 corresponds to the V-groove position cut by the split groove processing device. Next, the high-frequency heating device 10 is operated to heat the CRT split wire 11 to 350 to 500 degrees Celsius. The operating conditions of the high-frequency heating device in this case are 180 V, 200 A, 1500 Hz to 2 Hz.
Take 15 seconds at 000 Hz. By this heating operation, CRT split wire-1
1 is heated at a high speed, cracks are generated in the thickness direction of the glass along the V-groove by thermal shock, and the cathode ray tube is divided into a panel portion 1b and a funnel portion 1a. Immediately after the application of the thermal shock, either one of a coolant such as cold air or cold water of 10 degrees Celsius or less may be blown. The coolant promotes crack formation. As a matter of course,
The CRT split wire-11 is made of a metal member, and may be any member such as a steel wire or a braided wire, or any wire. In addition, the CRT split wire -1 is connected via heat insulating members, for example, ceramic attachments 12a and 13a so that the heating of the high frequency heating device 10 does not affect the cylinders 12 and 13.
1 is driven. After splitting the cathode ray tube,
The cathode ray tube raising / lowering unit 20 moves down, places the cathode ray tube on the transport pallet, and transfers the cathode ray tube to the separation device 60 at the next station. The robot is operated by the separation device, and the funnel portion 1a of the cathode ray tube is first taken out from the transport pallet.
Next, the panel section 1b is taken out and collected separately.
Recycle each material. It should be noted that the operation of the splitting groove processing device 40 for the cathode ray tube and the operation of the cathode ray tube splitting device 50 may be combined to form a single machine. Further, in the above-described embodiment, the example in which the metal wire is attached to the peripheral surface of the cathode ray tube has been described. However, the present invention is not limited to the metal wire, and a rectangular frame made of a metal member may be put on the divided portion. Further, an end surface or a flat surface of the metal plate may be abutted from four directions of the peripheral surface.
In this case, it goes without saying that any means such as a cam mechanism, a link mechanism, and a motor drive may be used as the means for attaching the metal member in addition to the fluid cylinder. FIG. 3 shows a circuit diagram of an equivalent circuit of the high-frequency heating apparatus 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 60K.
W, the frequency setting range was 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. The transfer means of the transport pallet may be arbitrarily used, and a roller conveyor, a belt conveyor, a roller conveyor, a chain conveyor, a pusher system using a fluid cylinder, or the like may be used. Next, another transport pallet according to the embodiment of the present invention will be described. 7 is a plan view of another transport pallet used in the cathode ray tube splitting device of the present invention, FIG. 8 is a cross-sectional view of FIG. 7 cut along S1 to S1, and FIG. 9 is a plan view of another transport pallet of the present invention. FIG. 10 is a cross-sectional view of FIG. 9 cut along S2 to S2. The transfer pallets 21A and 21B are plate-like members made of a metal member such as wood or AL, or a resin member such as ABS or Duracon. The one shown in FIGS. 7 and 9 has a substantially rectangular outer shape. . Further, the plate-like body is formed by forming predetermined recesses at four places around the periphery and forming through holes 15 and 18 at the center. Further, in the case of the transport pallet 21A shown in FIG. 7, another annular recess 16 is formed stepwise in the peripheral edge of the upper end of the through hole 15, and a ring-shaped elastic member 17 is provided in the annular recess 16. Is fitted. The ring-shaped elastic member 17 is any one of a rubber member or a plastic member having a hardness of about 35 to 50 degrees or a combination thereof. The rubber member may be any member such as silicon rubber, fluorine rubber, butyl rubber, urethane rubber, natural rubber, and the like. Of course, it may be foamed in a sponge shape. The plastic member is also made of silicon,
Any material such as vinyl chloride, nylon, and styrene may be used. The cathode ray tube (CRT) to be dismantled is mounted on the center of the transport pallet with the tube face down. (FIG. 10
The cathode ray tube is indicated by a two-dot chain line. Accordingly, the ring-shaped elastic member 17 is elastically deformed by its own weight of the cathode ray tube, and comes into close contact with the surface of the cathode ray tube. As a result, when the transport pallet 21A is transported and stopped, the cathode ray tube to be dismantled is not displaced by the frictional force between the cathode ray tube and the elastic member 17, and the initial mounting position can be maintained. In the case of the transport pallet 21B shown in FIG.
The elastic member pieces 19 are arranged at substantially equal angles at the locations. The constituent members of the elastic member piece 19 may be the same as those in FIG. In this case, since the cathode ray tube is supported at three points, the arrangement of the cathode ray tube is more stable than in the case of FIG. Further, when the transport pallet 21B is transported and stopped, the cathode ray tube to be dismantled is not displaced due to the frictional force between the cathode ray tube and the elastic member piece 19, and the initial mounting position can be maintained. Note that the outer shape of the transport pallet is not limited to the above embodiment, but may be any form. Also,
The shape of the through-hole is not limited to the circular shape, and the shape may be any shape such as a rectangular shape. According to the above embodiment, the division of the cathode ray tube can be performed efficiently in a short time. In addition, large-scale equipment is not required. Further, the displacement of the cathode ray tube mounted on the transport pallet can be prevented. As described above, the cathode ray tube splitting device of the present invention can efficiently automate the splitting of the cathode ray tube and sound the working environment 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 conceptual configuration diagram of a cathode ray tube splitting step in one embodiment of the present invention. FIG. 2 is a perspective view of a main part of a cathode ray tube splitting apparatus in one embodiment of the present invention. FIG. 4 is a plan view showing a state in which a CRT splitting wire of a splitting device according to an embodiment of the present invention is expanded around a cathode ray tube. FIG. 4 is a diagram showing a CRT splitting wire of a splitting device according to an embodiment of the present invention. FIG. 5 is a plan view showing a state in which is attached to the periphery of the cathode ray tube. FIG. 5 is a circuit diagram of an equivalent circuit of the high-frequency heating means constituting FIG. 2. FIG. FIG. 7 is a plan view of another transfer pallet used in the present invention. FIG. 8 is a cross-sectional view of FIG. 7 cut along S1 to S1. FIG. 9 is a plan view of another transfer pallet used in the present invention. FIG. 10 is a cross-sectional view of FIG. 9 taken along S2-S2. Description: 1 CRT (cathode ray tube / CRT) 1a funnel 1b panel 3 frit (joint between panel and funnel) 4 spindle motor 5 diamond cutter 6 first cathode ray tube elevating unit 10 high frequency Heating device (high frequency induction heating device) 10A Induction heating coil 11 CRT split wire-12 CRT split wire-Cylinder for expansion and contraction-13 Wire-tension cylinder-15, 18 Through hole 16 Annular recess 17 Elastic member 19 Elastic member piece 21, 21A , 21B Transport pallet 30 Transport pallet transport means 40 Cathode ray tube splitting groove processing device 50 Cathode ray tube splitting device 60 Sorting device

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01J 9/50 B09B 3/00

Claims (1)

(57) [Claims 1] An elastic portion is provided on a peripheral portion of a through hole provided in a plate-like body.
The transfer pallet on which the material is fitted and the transfer pallet are moved.
Transport means for transporting, and a cathode mounted on the transport pallet
A first raising and lowering device that raises and lowers a wire tube and rotates the wire tube at a predetermined speed
Holding means at a predetermined height by the descending means and the first elevating means.
V-shaped groove processing near the frit part of the raised cathode ray tube
Processing that applies one of scratch processing or scratch processing
Means, said processing carried by said transfer means after said processing
A second lift for raising and lowering the cathode ray tube mounted on the transport pallet
Holding means at a predetermined height by the lowering means and the second elevating means.
Raised V-groove or scratched part of the cathode ray tube
A metal wire attached to the periphery of the cathode ray tube in the processing section; and a high-frequency heating means for heating the metal wire , wherein the gold heated by the high-frequency heating means is provided .
In the V-shaped groove processing part or scratch processing part with metal wire
A thermal shock is applied to divide the panel into a funnel and a panel.
The transferred cathode ray tube is transferred to the separation step by the transfer means.
Cathode ray tube splitting device characterized by the the like.