JP2001047022A - Apparatus for disassembling braun tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for disassembling a Braun tube by means of which the Braun tube can be efficiently and simply disassembled. SOLUTION: A wounding means 10 which has a positioning and clamping means 11 for positioning and supporting a Braun tube 30 at a definite position and is provided with a rotation providing means 12 for rotating the Braun tube 30 positioned and supported at the definite position by the means 11 around the axial line of the Braun tube 30 and has a cutter 13 being brought into press-contact with the outer peripheral face around a seal line 31 of the Braun tube 30 being rotated by the rotation providing means 12 and applying a wounded line over the whole periphery around a seal line 31, and a vertically splitting means 20 which has a heater line 22 being brought into press-contact with the surface of a panel of the Braun tube 30 at the definite position through an approaching and separating means 21 and heating the surface of the panel along at least one line and has a cooling nozzle 23 for cooling a heating region heated by means of the heater line 22 on the surface of the panel are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CRT disassembly apparatus for disassembling a used television CRT and recycling the glass as a raw material.

[0002]

2. Description of the Related Art Used televisions are dismantled and classified according to the type of materials in order to reduce waste, prevent environmental pollution due to harmful components, and reuse resources. It is required to be reusable as possible, to reduce the amount of waste as much as possible, and to prevent environmental pollution. The Japan Home Appliances Association has developed a recycling plant, and various home appliance manufacturers have proposed various dismantling methods. . In particular, among television components, a cathode ray tube occupies a large volume, and various dismantling means for disassembling the tube and recycling the glass as a raw material have already been proposed. Conventionally, the following method has been generally adopted for disassembly of a cathode ray tube.

(1) Crushing method: A CRT is crushed with a hammer or the like, metals such as a built-in mask are removed, and the obtained mixed glass is visually sorted into panels and funnels.

(2) Defrit salvage method: A frit portion is dissolved with hot nitric acid, and a panel portion and a funnel portion are separated by a thermal shock using hot or cold water.

(3) Heater heating method: The side surface of the panel is damaged by a glass cutter or the like, and the wound line is heated by a heater, and the panel portion and the funnel portion are divided by the thermal shock.

(4) Diamond wheel cutting method: A cathode ray tube is directly cut by a diamond wheel.

[0007]

In the conventional methods (1) and (3), the quality of the obtained glass cullet is inferior. In addition, the method (2) requires large-scale processing equipment and generates a large amount of waste. further,
The methods (3) and (4) have drawbacks such as low processing speed and poor efficiency.

SUMMARY OF THE INVENTION An object of the present invention is to provide a CRT disassembling apparatus capable of disassembling a CRT efficiently and easily.

[0009]

In order to achieve the above object, a CRT disassembling apparatus according to the present invention has positioning clamp means for positioning and supporting a CRT at a fixed position.
A rotation applying means for rotating the cathode ray tube, which is positioned and supported at a fixed position by the positioning clamp means, around the axis of the cathode ray tube, and a panel portion closer to a panel line and a funnel portion of the cathode ray tube rotated by the rotation applying means. Means that has a cutter that presses against the outer circumferential surface at a position deviated to apply a scoring line over the entire circumference near the seal line, and a means for approaching and separating the panel surface of the cathode ray tube supported at a fixed position. Vertical split means having a heater wire which is pressed against and heats the panel surface along at least one line, and which has a cooling nozzle which cools a heating area of the panel surface by the heater wire. It is characterized by being.

[0010] Since the present invention is configured as described above, the damage line can be automatically and accurately applied to a predetermined position near the seal line of the CRT. Further, the heater wire is automatically pressed against the panel surface of the cathode ray tube, so that the vertical division can be performed efficiently and safely. In addition, since the vertical splitting means uses both the heating by the heater wire and the cooling of the heating area by the cooling nozzle, the vertical splitting of the cathode ray tube by the thermal shock can be reliably performed in a short time. The heating time can be shortened, and the extension direction of the crack can be unified to the direction along the tube axis of the cathode ray tube, the amount of small fragments generated by the crack can be reduced, and the handling after the next step can be facilitated.

Further, the disassembly apparatus for a cathode ray tube according to the present invention comprises:
The vertical dividing means performs processing while supporting the panel surface of the cathode ray tube downward. With this configuration, the configuration of the support means for the CRT can be simplified, and the scattering of fragments can be reduced.

Further, in the apparatus for disassembling a CRT according to the present invention, the vertically dividing means is provided in the middle of the CRT conveying means. With this configuration, the vertical division of the cathode ray tube can be performed during the transportation of the cathode ray tube, which is convenient for the transportation to the next step.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic side view showing an embodiment of a cathode ray tube disassembling apparatus according to the present invention, and FIG.
1 is a schematic plan view of FIG. 1, (B) is a side view of a main part of the vertical dividing means in the present invention, (C) is a front view thereof, FIG. 3 is a plan view for explaining operation of the wounding means in the present invention, and FIG. 1 is a schematic perspective view of a vertically split example of a cathode ray tube according to the present invention.

In FIGS. 1 and 2A, reference numeral 10 denotes an injury means, reference numeral 20 denotes a vertically dividing means, reference numeral 30 denotes a cathode ray tube, and reference numeral 40 denotes a transport means.

The injury means 10 includes a positioning clamp means 11 for positioning and supporting the cathode ray tube 30 at a fixed position, and a rotation for rotating the cathode ray tube 30 positioned and supported at a fixed position by the positioning clamp means 11 around the axis of the cathode ray tube 30. There is provided an applying means 12 and a cutter 13 which is pressed against the outer peripheral surface near the seal line 31 of the cathode ray tube 30 rotated by the rotation applying means 12 to apply the damage line 32 over the entire circumference near the seal line 31. CRT 30
As shown in FIG. 4, the seal line 31 is a position where the panel portion and the funnel portion are joined by frit glass, and the damage line 32 is slightly (for example, about 5 mm) It is applied along the position deviated to the part side. This is because the frit glass is a low-melting glass (solder glass) containing a large amount of lead, and is not mixed into the lead-free recycled glass material on the panel side after dismantling (mainly lead). On the other hand, since glass containing lead is used on the funnel side to shield X-rays, mixing frit glass has no effect.

As shown in FIG. 2A, the positioning clamp means 11 includes a plurality of fixed side clamp members 11.
a and a plurality of movable-side clamp members 11 b are mounted on a rotary table 12 of a rotation applying unit 12 on which the CRT 30 is mounted.
It is arrange | positioned around the circumference | surroundings a. In order to change the clamp position according to the size of the cathode ray tube 30, the clamp means 11 can change and adjust the mounting position on the rotary table 12a along the slit hole 11c. The fixed-side clamp member 11a and the movable-side clamp member 11b have a cushioning material such as rubber adhered to the clamp surface. The movable-side clamp member 11b has, for example, a single-acting air cylinder structure. When the cathode ray tube 30 is clamped, compressed air is supplied to one chamber of a piston of the air cylinder to perform a clamp operation, and when the cathode ray tube is released, the clamp operation is performed. ,
The supply path of the compressed air to one chamber of the piston is switched to the atmosphere and released, and the opening operation is performed by a spring installed in the other chamber of the piston.

As shown in FIGS. 1 and 2A, the rotation applying means 12 comprises a rotary table 12a and a motor 12b for driving the rotary table 12a to rotate. The rotating table 12a is provided with a rotating shaft 1 on a base 14.
2c is rotatably supported, and rotational force is transmitted from the motor 12b via the transmission member 12d. Rotary table 12
A support base 12e on which the cathode ray tube 30 is mounted is installed at the center of the upper surface of the upper surface a, and a cushioning material such as rubber is adhered to the upper surface of the support stand 12e.
The mounting height of 0 can be adjusted according to the size or the like.

As shown in FIGS. 1 and 2A and FIG. 3, the cutter 13 has a part of the
arm 13a rotatably supported toward the center of a
Is mounted at the tip of the CRT, and can be approached or separated from the outer peripheral surface of the cathode ray tube 30 which is positioned and clamped on the rotary table 12a. As the cutter 13, a glass cutter such as a carbide cutter is used. The arm 13a is fixed to a shaft 13b, and the shaft 13b is
It is rotatably supported through. A drive lever 13d is integrally fixed to the lower end of the shaft 13b, and a wound force applying means 13e is connected to the drive lever 13d. The wound force applying means 13e has one end of the drive lever 1
3d, and the other end of the wire 13g having the weight 13f connected to the other end is wound around a pulley 13h.
3d is towed to apply an aggressive force to the arm 13a. The pulley 13h is provided with a support member 13 on a part of the base 14.
It is rotatably supported via i. In addition, other than the weight 13f, other means such as a spring and an air cylinder may be adopted as the aggressive force applying means 13e. Return means 1 for returning to the inoperative position is provided on the drive lever 13d.
3 j is installed on the base 14. This return means 13j
Indicates an example in which an air cylinder or the like is used.
You may comprise by other means.

As shown in FIGS. 1 and 2 (B) and 2 (C), the vertical dividing means 20 is pressed against the panel surface of the cathode ray tube 30 supported at a fixed position via an approaching / separating means 21. It has a heater wire 22 for heating the panel surface along at least one line, and has a cooling nozzle 23 for cooling an area of the panel surface heated by the heater wire 22.

The approach / separation means 21 is mounted on the base 24 and supports the both ends of the heater wire 22 to press the heater wire 22 against the panel surface of the cathode ray tube 30 supported at a fixed position. Although the case where it is constituted by an air cylinder is illustrated, it may be constituted by other means.

The heater wire 22 has a length that traverses the panel surface of the cathode ray tube 30 and is made of a nichrome wire, a Kanthal super wire, or the like. For example, in the case of a Kanthal super wire, a wire having a diameter of 3 to 5 mm is used and is adhered to the panel surface for about 20 to 30 seconds.

The cooling nozzle 23 is fixedly installed at a fixed position, and opens and closes an opening / closing valve or the like from a supply source of a cooling fluid (for example, cooling air) toward a heating area of the panel surface by the heater wire 22 at a predetermined time. It is controlled to inject for a short time.

The means for supporting the cathode ray tube 30 in a fixed position in the vertically dividing means 20 is constituted so as to support the panel surface of the cathode ray tube 30 downward so as not to hinder heating by the heater wire 22 and cooling by the cooling nozzle 23. .

As shown in FIGS. 1 and 2A, the conveying means 40 also serves as a means for supporting the cathode ray tube 30 in the vertical dividing means 20 at a fixed position.
0a and the carry-out conveyor 40b are illustrated separately. Carry-in conveyor 40a and carry-out conveyor 40
Although “b” exemplifies the case where it is configured by a belt conveyor, it may be configured by a roller conveyor (preferably made of rubber). The heater wire 22 and the cooling nozzle 23 are disposed between the carry-in conveyor 40a and the carry-out conveyor 40b.

When the loading conveyor 40a is started, for example, with the CRT 30 mounted thereon, the CRT 30
Is transported toward the vertically split position, and when it reaches a predetermined position, the loading conveyor 40a is stopped by a sensor or the like, and subsequently, the approaching / separating means 21 is operated to approach the heater wire 2
2 is pressed against the panel surface of the cathode ray tube 30 and heated for a predetermined period of time. After the heating, the current is stopped and the approaching / separating means 21 is operated to separate the heater wire 22 from the panel surface. From 23, a cooling fluid is sprayed toward the heating area on the panel surface for a predetermined time, and the thermal shock divides the CRT 30 vertically (for example,
Thereafter, the carry-out conveyor 40b is driven to automatically control the vertically split cathode-ray tube 30 to be carried out from the vertically split position.

The apparatus according to the embodiment of the present invention has the above-described configuration. Next, the overall operation will be described. First, the cathode ray tube 30 to be disassembled is sent to the damage means 10 of the present invention after having been subjected to pretreatments such as vacuum release, removal of the electron gun, and removal of the reinforcing band. This CRT 30
As shown in FIG. 1, the panel is placed on the support table 12e of the turntable 12a with the panel surface facing downward, and the position is clamped by the positioning clamp means 11. Then, the rotary table 12a is rotated, and the cutter 13 is pressed against the outer peripheral surface of the cathode ray tube 30 in the vicinity of the seal line, and the damage line 32 is formed over the entire circumference. Thereafter, the cutter 13 is returned to the non-operation position, the rotary table 12a is stopped, and the movable clamp member 11b is released to operate the CRT 30.
Is released, and the cathode ray tube 30 is transferred onto the conveyor 40a for loading into the vertically dividing means 20 with the panel surface facing downward. Then, the carry-in conveyor 40a is activated, the cathode ray tube 30 is carried into the vertically split position, and the heater wire 22 is pressed against the panel surface of the cathode ray tube 30 from below via the approach / separation means 21 for a predetermined time. Electricity is applied to heat the panel surface. afterwards,
The energization of the heater wire 22 is stopped, and the heater wire 22 is separated downward by the approach / separation means 21. Subsequently, a cooling fluid is jetted from the cooling nozzle 23 toward a heating area of the panel surface by the heater wire 22 for a predetermined time. As a result, the CRT 30 instantaneously cracks and expands due to thermal shock starting from the vicinity of the area heated by the heater wire 22, and is vertically divided into two parts, for example, as shown in FIG. The vertically split cathode-ray tubes 30 are carried out by the carry-out conveyor 40b and sent to the next step. In the next step, the shadow mask, inner shield and other internal components are taken out of the vertically divided cathode ray tube 30, the fluorescent film is removed, and the corner of the vertically divided cathode ray tube 30 is punched out. Then, by hitting the inside of the cathode ray tube 30 with a Keren hammer or the like along the damage line 32, the CRT is separated into a panel portion and a funnel portion.

The heater wire 22 and the cooling nozzle 23
May be vertically divided into a plurality of two or more divided according to the size of the cathode ray tube 30, etc.
In that case, for example, the heater wire 22 and the cooling nozzle 23
Of the heater wire 22
And by installing a plurality of cooling nozzles 23. The heater wire 22 may be in a diagonal direction on the panel surface or any other direction. In addition, the number of divisions can be appropriately set so as to facilitate removal of the built-in components and facilitate the operation of removing the fluorescent film, the punching operation of the corner portion, and the division operation of the panel portion and the funnel portion. .

As described above, according to the present invention, first, the damage line 32 is automatically applied to the vicinity of the seal line of the pretreated CRT 30 by the damage means 10, This is characterized in that the CRT 30 is automatically divided vertically, whereby the CRT 30 can be disassembled safely and efficiently with inexpensive equipment.

[0029]

According to the present invention, it is possible to automatically and efficiently insert a damage line at a predetermined position near a seal line of a cathode ray tube. Further, the heater wire is automatically pressed against the panel surface of the cathode ray tube, so that the vertical division can be performed efficiently and safely. In addition, since the vertical splitting means uses both the heating by the heater wire and the cooling of the heating area by the cooling nozzle, the vertical splitting of the cathode ray tube by the thermal shock can be reliably performed in a short time. The heating time can be shortened, and the extension direction of the crack can be unified to the direction along the tube axis of the cathode ray tube, the amount of small fragments generated by the crack can be reduced, and the handling after the next step can be facilitated.

Further, the vertical splitting means of the present invention is characterized in that the panel surface of the cathode ray tube is supported and treated downward, and this configuration can simplify the configuration of the cathode ray tube supporting means and reduce the debris. Scattering can be reduced.

Further, the vertical splitting means of the present invention is characterized in that it is installed in the middle of the CRT conveying means. With this configuration, the vertical splitting of the CRT can be performed while the CRT is being conveyed. It is convenient for transportation to the process.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a main part showing an embodiment of a cathode ray tube disassembling apparatus according to the present invention.

2A is a schematic plan view of FIG. 1, FIG. 2B is a side view of a main part of the vertical dividing means in the present invention, and FIG. 2C is a front view thereof.

FIG. 3 is a plan view for explaining the operation of the injury means in the present invention.

FIG. 4 is a schematic perspective view of a vertically split example of a cathode ray tube according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Scratching means 11 Positioning clamp means 12 Rotation giving means 13 Cutter 14 Base 20 Vertical splitting means 21 Approaching / separating means 22 Heater wire 23 Cooling nozzle 30 CRT 31 Seal line 32 Scratching line 40 Transport means

Claims (3)

[Claims] 1. A positioning device comprising: positioning clamp means for positioning and supporting a cathode ray tube at a fixed position; and rotation applying means for rotating the cathode ray tube positioned and supported by the positioning clamp means at a fixed position about an axis of the cathode ray tube. A wound which has a cutter which is pressed against an outer peripheral surface of a position shifted toward the panel from a seal line between a panel portion and a funnel portion of the cathode ray tube which is rotated by the applying means, and applies a scratch line over the entire circumference near the seal line; Means for heating the panel surface along at least one line, the heater wire being pressed against the panel surface of the cathode ray tube supported in a fixed position via an approaching / separating means, and Vertically disposing means having a cooling nozzle for cooling a heating area by a heater wire, . 2. The apparatus for disassembling a cathode ray tube according to claim 1, wherein the vertically dividing means performs processing while supporting a panel surface of the cathode ray tube downward. 3. The CRT disassembling apparatus according to claim 1, wherein the vertically dividing means is provided in the middle of CRT transport means.