JP3309370B2 - Cathode ray tube dividing device and cathode ray tube dividing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cathode ray tube (CR)
The present invention relates to a cathode ray tube splitting apparatus and a cathode ray tube splitting method which are optimally used when disassembling and processing T).

[0002]

2. Description of the Related Art In recent years, recycling of resources and prevention of environmental destruction have been highlighted. In response to this request,
2. Description of the Related Art Reuse of a used television set or a cathode ray tube (CRT) for a computer monitor as an example of a display device is being studied in various fields. Further, there is an urgent need to quickly and efficiently recycle an increasing number of discarded television sets. The cathode ray tube is
It is used as a television set and other receivers, and is a glass structure of a panel portion (also called a face portion) and a funnel portion (also called a panel skirt portion). The panel section is made of almost transparent glass material to improve light transmittance, and the funnel section is made of lead to prevent leakage of X-rays generated by collision of a high acceleration voltage electron beam with a substance. It is made of glass material mixed with. The funnel portion and the panel portion are formed in a tubular shape by welding and shielding with frit glass (solder glass).

An electron gun, a deflection yoke, and the like are attached to the back of the cathode ray tube in appearance. A shadow mask (or aperture grill) is provided inside the cathode ray tube, and phosphors of three colors of red, green, and blue are regularly applied to a phosphor screen on an inner surface side of the panel portion. By the way, when recycling this kind of cathode ray tube, for example, pressing a heat ray against the side of the cathode ray tube,
There is a method of dividing a panel portion and a funnel portion. This conventional splitting method is disclosed, for example, in Japanese Patent Application Laid-Open No. 9-171773. In this case, the heating wire is moved to the side of the cathode ray tube by a motor and pressed against the side of the cathode ray tube. I have.

[0004]

However, in such a method of pressing a hot wire by a motor, when the hot wire is pressed against the side surface of the cathode ray tube, the tension of the hot wire is not constant, and the hot wire is pressed by the cathode ray tube. There is a problem in that it is difficult to cope with the curvature of the side surface, and the division work of the panel portion and the funnel portion is not stable. In addition, since the thickness of the glass differs depending on the size of the cathode ray tube, supplying a constant amount of power to the heating wire irrespective of the size. For example, a crack may be generated on the funnel portion side or the panel portion side other than the contact portion, and may be broken. When the cathode ray tube is large, there is a problem that cracks are small due to insufficient power and cannot be divided. Therefore, the present invention solves the above problems, and a cathode ray tube splitting device and a cathode ray tube capable of stably performing a split operation of a cathode ray tube by closely attaching a linear heating member to a curved shape of a side surface of the cathode ray tube. The purpose of the present invention is to provide a dividing method.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cathode ray tube dividing apparatus for dividing a cathode ray tube into a panel portion and a funnel portion by moving the cathode ray tube to a side surface of the cathode ray tube. Positioning means for positioning the cathode ray tube at a predetermined position by contacting the side of the cathode ray tube, heating means for moving the cathode ray tube to the side of the cathode ray tube with the movement of the positioning means, heating means for the cathode ray tube, A linear heating member for applying heat distortion to the side surface of the cathode ray tube to divide the panel into a panel portion and a funnel portion by energizing, and a linear heating member for holding one end and the other end of the linear heating member. This is achieved by a splitting device for a cathode ray tube, comprising: a holding unit; and a biasing unit for a heating member for causing the linear heating member to adhere to the side surface shape of the cathode ray tube with a predetermined tension. You.

According to the present invention, there is provided a cathode ray tube dividing apparatus for dividing a cathode ray tube into a panel portion and a funnel portion.
The positioning means moves to the side surface of the cathode ray tube and contacts the side surface of the cathode ray tube to position the cathode ray tube at a predetermined position. The heating means of the cathode ray tube is moved to the side of the cathode ray tube with the movement of the positioning means. The heating means of this cathode ray tube
It has a linear heating member, holding means for the heating member, and urging means for the heating member. The linear heating member imparts thermal distortion to the side surface of the cathode ray tube when energized to divide it into a panel portion and a funnel portion. The holding means for the heating member holds one end and the other end of the linear heating member. The urging means of the heating member is adapted to bring the linear heating member into close contact with a predetermined tension in accordance with the side surface shape of the cathode ray tube. Thus, after the cathode ray tube is positioned by the positioning means, the linear heating member is brought into close contact with a predetermined tension according to the side surface shape of the cathode ray tube by the urging force of the urging means of the heating member. For this reason, by energizing the linear heating member, thermal distortion is given to the side surface of the cathode ray tube, so that the cathode ray tube can be reliably divided into the panel portion and the funnel portion.

In the present invention, preferably, the positioning means includes a first positioning slider that contacts the long side of the side surface of the cathode ray tube, a second positioning slider that contacts the short side of the side surface of the cathode ray tube, and a first positioning slider. There is provided a first drive unit for contacting the long side of the side surface of the cathode ray tube, and a second drive unit for contacting the second positioning slider on the short side of the side surface of the cathode ray tube. Thereby, the first positioning slider and the second positioning slider correspond to the long side and the short side of the side surface of the cathode ray tube. In this case, the first driving means and the second driving means operate. Thus, the cathode ray tube can be reliably positioned using the two short sides and the two long sides.

In the present invention, preferably, one of the first driving means and the second driving means has a movement amount detecting unit for detecting a movement amount until the slider hits the side surface of the cathode ray tube. Thus, the amount of movement until the slider hits the side surface of the cathode ray tube can be determined, so that the size of the cathode ray tube can be immediately determined.

In the present invention, preferably, a biasing means for the heating member is arranged on the holding means for the linear heating member, and the biasing means has a moving means and a spring. When the moving means moves the linear heating member to the short side and the long side of the side surface of the cathode ray tube and further presses against the side surface of the cathode ray tube, the spring is connected to one end or the other end or one end of the linear heating member. The linear heating member is brought into close contact with a predetermined tension in conformity with the side surface shape of the cathode ray tube against the urging force applied to both of the other ends. Thus, the linear heating member can be securely brought into close contact with a predetermined tension in accordance with the side surface shape of the cathode ray tube by using the force of the spring, and the panel portion and the funnel portion can be reliably divided. In the present invention, preferably, the control means specifies the size of the cathode ray tube according to the amount of movement from the detection unit of the amount of movement, and changes the amount of electricity to the linear heating member according to the size of the cathode ray tube. It has become. Thereby, the cathode ray tube can be divided into a panel portion and a funnel portion according to the size of the cathode ray tube.

The object of the present invention is to provide a method of dividing a cathode ray tube for dividing a cathode ray tube into a panel portion and a funnel portion according to the present invention. A positioning step of positioning the tube at a predetermined position; and a heating means moving step of moving the heating means of the cathode ray tube to the side surface of the cathode ray tube with the movement of the positioning means. By applying a biasing force to the linear heating member for dividing the panel portion and the funnel portion by applying thermal strain to the side surface of the cathode ray tube by applying a predetermined tension according to the side shape of the cathode ray tube This is achieved by a method of dividing a cathode ray tube characterized by the following. Thus, after the cathode ray tube is positioned, the linear heating member is brought into close contact with a predetermined tension according to the side surface shape of the cathode ray tube by the urging force of the urging means of the heating member. For this reason, by energizing the linear heating member, thermal distortion is given to the side surface of the cathode ray tube, so that the cathode ray tube can be reliably divided into the panel portion and the funnel portion.

[0011]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the embodiments described below are preferred specific examples of the present invention,
Although various technically preferable limits are given, the scope of the present invention is not limited to these modes unless otherwise specified in the following description.

FIG. 1 shows a preferred embodiment of a cathode ray tube splitting device according to the present invention. As shown in FIGS. 1 to 3, the splitting device 10 for a cathode ray tube has a main frame 1.
1, division unit 12, backup unit 13, transfer machine 1
4, a carry-in conveyor 15, a carry-out conveyor 16 and the like. The carry-in conveyor 15 in FIG. 1 is a conveyor for carrying in a cathode ray tube 20 to be divided. The cathode ray tube 20 carried in by the carry-in conveyor 15 has already been removed from the explosion-proof band and has been subjected to a cleaning process. The transfer machine 14 is provided with a cathode ray tube 20 carried in by the carry-in conveyor 15.
Is moved in the U direction and is supplied to the backup unit 13 of the division unit 12. The backup unit 13 can move up and down in the Z direction with the cathode ray tube 20 placed thereon in order to position a linear heating member described later at a predetermined division position of the cathode ray tube 20. After the cathode ray tube 20 divided in the division section 12 is moved in the U1 direction by the transfer device 14 onto the unloading conveyor 16, the unloading conveyor 16 unloads the divided cathode ray tube 20 to the outside. .

FIG. 4 shows a preferred embodiment of the dividing section 12 of FIG. 1, and is a plan view of the dividing section 12. As shown in FIG. FIG.
FIG. 6 is a side view of the dividing part 12 viewed from W1 in FIG. 4, and FIG. 6 is a side view of the dividing part 12 viewed from W2 in FIG. FIG. 7 schematically shows the structure of the dividing unit 12 of FIG.
FIG. 8 shows the structure of the region AR1 and the region AR2 of FIG. 7 in detail, and FIG. 9 shows the structure of the region AR3 and the region AR4 of FIG. 7 in detail. Referring to FIG. 4 and FIG. 7, the dividing section 12 schematically has a positioning means 22 for the cathode ray tube 20 and a heating means 24 for the cathode ray tube. Positioning means 2
2 includes two first positioning sliders 26 and 28 and a second
It has positioning sliders 30, 32, a cylinder 34 as a first driving unit, a cylinder 36 as a second driving unit, and the like.

The first positioning sliders 26 and 28 shown in FIG.
Are arranged in parallel at a distance from each other with the cathode ray tube 20 interposed therebetween. Similarly, the second positioning slider 3
Reference numerals 0 and 32 are also arranged in parallel with the cathode ray tube 20 therebetween. That is, the first positioning sliders 26 and 2
8 and the second positioning sliders 30 and 32 are arranged in a grid pattern. For example, the first positioning sliders 26 and 28
Are located on the second positioning sliders 30 and 32. The cylinder 34 includes first positioning sliders 26 and 28.
Is applied synchronously and close to the cathode ray tube 20 side. The cylinder 36 includes the second positioning sliders 30 and 32.
Is brought closer to the cathode ray tube 20 in synchronization. The first positioning sliders 26 and 28 include a cylinder 34
Can be brought closer to each other in synchronization by a mechanism (not shown). Similarly, the second positioning sliders 30 and 32 can be brought closer to each other in synchronization by a mechanism (not shown) by the operation of the cylinder 36. For example, a mechanism such as a turnbuckle can be used as a mechanism for bringing the first positioning sliders 26 and 28 closer to each other.
A method such as a turn buckle can be adopted as a method of bringing 32 closer.

Inside the first positioning sliders 26 and 28 in FIG. 7, rollers 26A and 28A for contact are provided, respectively. These rollers 26A and 28A are connected to the cathode ray tube 2
0 can be in contact with the long side 20A. Similarly, a plurality of rollers 30 </ b> A and 32 </ b> A are provided inside the second positioning sliders 30 and 32. Roller 30A,
32A is in contact with the short sides 20B, 20B of the cathode ray tube 20.

Next, the heating means 24 of the cathode ray tube shown in FIG.
Four linear heating members 40, 41, 42, 43, and heating member holding means 50, 51, 52, 53, 54, 55,
56 and 57, and four springs 71 as urging means. The four linear heating members 40, 41, 42,
Numeral 43 designates a part which gives a thermal strain to the side surface of the cathode ray tube by energizing and divides the cathode ray tube 20 into a panel portion and a funnel portion. Heating member holding means 50 to 57 in FIG.
Is for holding one end and the other end of the linear heating members 40, 41, 42, 43. The spring 71, which is the urging means of the heating member, generates an urging force for bringing the linear heating members 40 to 43 into close contact with a predetermined tension in accordance with the side surface shape of the cathode ray tube 20.

The holding means 50 to 57 shown in FIGS.
Are disposed at the ends of the first positioning sliders 26 and 28 and the second positioning sliders 30 and 32, respectively. Specifically, the holding units 50 and 53 are arranged at both ends of the second positioning slider 30, and the holding units 57 and 54 are arranged at both ends of the second positioning slider 32.
Similarly, the holding units 51 and 56 are arranged at both ends of the first positioning slider 26, and the holding units 52 and 55 are arranged at both ends of the first positioning slider 28. The holding means 50 and 53 hold both ends of the linear heating member 40. The holding means 57 and 54 hold both ends of the linear heating member 43. Similarly, the holding means 51, 56
Both ends of the linear heating member 40 are held. The holding means 52 and 55 hold both ends of the linear heating member 42.

FIG. 8 shows the mechanical details of the areas AR1 and AR2 in FIG. FIG. 9 shows the area AR in FIG.
3 shows the mechanical details of AR4. 8, the holding means 50, 51, 52, 53 and the linear heating member 4 are shown.
0, 41, and 42 are shown. In FIG. 9, the holding means 5
4, 55, 56, 57 and linear heating members 43, 40, 4
2 etc. are shown. Referring to FIGS. 7 to 9, as described above, the linear heating member 40 includes the holding units 51 and 5.
6 hold both ends thereof. Both ends of the linear heating member 41 are held by holding means 50 and 53. The linear heating member 42 is provided with holding means 52, 55.
Are held at both ends. Linear heating member 4
3 has both ends held by holding means 57 and 54. As shown in FIG. 8 and FIG.
0, 41, 42, and 43 are electrically insulated at four points by a mounting member 50A so as not to make electrical contact with each other.

Referring to FIG. 8 and FIG. 9, in this embodiment, the holding means 50, out of the eight holding means 50-57,
52, 54, 56 and holding means 51, 53, 55, 57
Has a slightly different structure. First, the holding means 50,
52, 54, and 56 have the same structure, and include a slide member 60, a roller 61, and a cylinder 62. The slide member 60 in FIG. 8 can move a predetermined stroke in the direction of the arrow V by the operation of the cylinder 62. The roller 61 is wound around one end of a linear heating member. For example, one end 41A of the linear heating member 41 shown in FIG.
Is fixed by a fixing portion 41B. Such a structure is the same in the holding means 50, 52, 54, 56.

On the other hand, the holding means 51, 53, 5
5 and 57 are slide members 7 as shown in FIGS.
0, a spring (tensile spring, biasing means) 71, a lever 72, a roller 73, a roller 74, a center shaft 75, a cylinder 76, and the like. The cylinder 76 can move the slide member 70 by a predetermined stroke in the arrow V1 direction. The roller 73 and the roller 74 guide one end 40A of the linear heating member 40, for example, and
It is fixed to. A roller 74 is attached to one end of the lever 72, and the spring 71 is provided between the other end of the lever 72 and the attachment 77 of the slide member 70.
Is attached. The structure of the holding means 51 is the same in the holding means 53, 55, and 57.
That is, in the holding means 51, 53, 55, and 57, the other end of the corresponding linear heating member, for example, the other end 40A of the heating member 40, can move against the force of the spring 71. That is, when the lever 72 rotates about the central axis 75 in the direction of arrow F in FIG. 8, a margin is generated in the change in the length of the linear heating member 40.

8, 9 and 7, one end of each of the four linear heating members 40, 41, 42 and 43 is fixed by holding means 50, 52, 54 and 56. Cannot move at one end, but has a linear heating member 40, 4
The other ends of 1, 42, 43 are holding means 51, 53, 55,
At 57, its length can be changed against the force of the spring 71. Accordingly, the linear heating members 40, 41, 42, and 43 can be closely adhered to the curved surface shape in the long side direction 20A and the short side direction 20B of the side surface of the cathode ray tube 20.

Next, the operation of positioning the cathode ray tube 20 by the positioning means and the operation of dividing the cathode ray tube 20 into a panel portion and a funnel portion by the heating means 24 of the cathode ray tube will be described with reference to FIGS. I do. In FIG. 1, the cathode ray tube 20 in a state where the explosion-proof band has been removed and cleaned has been carried in from the carry-in conveyor 15. The transfer machine 14 moves the cathode ray tube 20 from the carry-in conveyor 15 side to the backup unit 13 side and places it on the backup unit 13. FIG. 10 shows a state in which the cathode ray tube 20 is placed on the backup unit 13 in this manner. In this case, the panel unit side of the cathode ray tube 20 is mounted on the backup unit 13.

As shown in FIG. 13, the cylinders 34, 36
Is activated by a command from the central processing unit (CPU) 101 of the control means 100, the state changes from the state of FIG. 10 to the state of FIG. That is, the first positioning sliders 26 and 2
8 and the second positioning sliders 30, 32 approach the cathode ray tube 20, respectively, and the rollers 26A, 28A, 30A,
32A contacts the long side 20A and the short side 20B of the cathode ray tube 20. As a result, the cathode ray tube 20 can be correctly positioned by being placed on the backup unit 13. At this time, for example, the cylinder 36 is connected to the counter 102 of the control means 100 as shown in FIG. The cylinder 36 and the counter 102 play a role of a length measuring machine, and the amount by which the rod 36A of the cylinder 36 moves is
It can be counted by the counter 102. This allows the CPU 101 of the control means 100 to know the size of the cathode ray tube 20 to be divided.

The CPU 101 has a linear heating member 40,
The amount of power to be applied to 41, 42, 43 is programmed. In other words, the CPU 101 calculates the size (type, inch size) of the cathode ray tube 20, and has a preset power amount and energizing time of the size as a data table. Therefore, based on the size of the cathode ray tube 20 obtained by the counter 102, the CPU 101
It is possible to set a power amount and an energizing time suitable for the size of the cathode ray tube 20 to the power regulator 104 via the D / A converter 103. A control voltage is applied from the D / A converter 103 to a control terminal of the power conditioner 104.
The power conditioner 104 applies a predetermined amount of power for a predetermined energizing time by the control voltage to the linear heating members 40, 41,
Electric power is supplied to 42 and 43. When the predetermined energization time has been reached, no control voltage is applied to the power regulator 104 from the CPU 101 side, so the power regulator 104 stops supplying power to the linear heating members 40, 41, 42, 43. The four linear heating members 40, 41,
Reference numerals 42 and 43 are electrically connected to the power conditioner 104 in series as shown in FIG.

In the state of FIG. 11, each linear heating member 4
0, 41, 42, and 43 are located near the long side 20A and the short side 20B. The state shifts from the state of FIG. 11 to the state of FIG. That is, the eight holding means 50 shown in FIGS.
Since the rods of the cylinders 62 and 76 perform the extension operation, the linear heating members 40, 41, 42 and 43
Is securely adhered along the curved shape of the long side portion 20A and the short side portion 20B of the cathode ray tube 20, as shown in FIG. In this case, the spring 71 shown in FIGS.
Gives an urging force to the other ends of the linear heating members 40, 41, 42, 43, but the linear heating members 40, 41, 4
2, 43 are the long side 20A and the short side 20B of the cathode ray tube 20
8, the spring 71 extends and the lever 72 rotates in the F direction as shown in FIG.
The freely usable lengths of the linear heating members 40, 41, 42, and 43 are substantially extended, so that the linear heating members 40, 41, 42, and 43 can surely adhere to the long side 20A and the short side 20B, respectively.

In this manner, the four linear heating members 4
After 0, 41, 42, and 43 are adhered to the long side 20A and the short side 20B, as described above, the power conditioner 104 shown in FIG. Apply a predetermined amount of power. The predetermined energization time and power amount are set in advance according to the size of the cathode ray tube. This is because the thickness of the glass forming the cathode ray tube differs depending on the size of the cathode ray tube 20, so that it is necessary to change the amount of power depending on the size of the cathode ray tube. By setting such detailed conditions, the cathode ray tube 20 can be divided into a panel portion P and a funnel portion FN as shown in FIG. Before the operation of dividing the cathode ray tube 20 by the four linear heating members, as shown in FIG. 15, grooves 20M are formed at four corners of the cathode ray tube 20 by a diamond cutter or the like. It is desirable. Accordingly, the linear heating members 40, 41, 4 are located at substantially linear positions connecting the grooves 20M, 20M.
By applying 2, 43, the cathode ray tube 20 can be surely divided into the panel portion P and the funnel portion FN.

The linear heating members 40, 41, 42, 43 also called heating wires can be divided into a panel portion P and a funnel portion FN as shown in FIG. That is, it is desirable to divide at the position PP on the panel part P side which is deviated from the position of the frit glass part FT sealing the panel part P and the funnel part FN. Therefore, as shown in FIG. 16B, the above-mentioned groove (also referred to as a scratch) 20M is located at this position PP.
It is desirable to form T. The reason why the panel portion P is divided from the funnel portion FN at the position PP in this way is to prevent the lead of the glass on the funnel portion FN side from entering the glass cullet of the panel portion P.

In the above-described embodiment, as shown in FIG. 7, one end of each linear heating member 40 is fixed, and the other end of the heating member 40 can be expanded and contracted by a spring 71 as an urging means. Has become. However, as shown in FIGS. 17, 18 and 21, the linear heating members 40, 41, 4
Needless to say, the springs 71 may be provided at both ends of the two and 43. The current value flowing through the linear heating members 40, 41, 42, 43, which are also called heating wires, is, for example, 18 A, the voltage is 40 to 50 V, and the electric energy is 0.7 kW to 0. Preferably, it is 9 kw. The energizing time is, for example, about 60 to 90 seconds, depending on the size of the cathode ray tube.

As shown in FIG. 19, when the panel portion P and the funnel portion FN of the cathode ray tube are divided, the linear heating members 40, 41, 42 and 43 are pressed in close contact with each other.
Since the crack CR grows from the scratch 20M, the panel portion P and the funnel portion FN can be completely and smoothly divided as shown in FIG. In this case, as shown in FIGS. 20A and 20B, for example, by positioning the intersection of the linear heating members 40 and 41 near the groove 20M, as shown in FIG.
A tension is generated around the point (1), and a concentrated crack is formed. Since glass has a weak property in tension,
As a result, the cathode ray tube can be divided well. Since the linear heating member slides and presses against the side surface of the cathode ray tube as described above, it can sufficiently cope with various sizes of cathode ray tubes.

As shown in FIG. 21, by disposing springs 71 at both ends of the linear heating members 40, 41, 42, 43 in FIGS. 17 and 18, the bending of the linear heating members is absorbed. In addition, the linear heating member can reliably adhere to the side surface of the cathode ray tube, and the direction in which cracks occur can be guided in a certain direction. The linear heating member may be a single wire, but a stranded wire formed by twisting several wires may be used. By employing a stranded wire, the amount of heat supplied to the glass can be made constant, and the deformation of the linear heating member can be prevented. Thus, the dividing device of the present invention
By changing the amount of electric power and the energizing time in accordance with the size of the cathode ray tube, thermal strain for splitting is generated to cause a crack, and the cathode ray tube can be efficiently divided into a funnel portion and a panel portion.

In the embodiment of the present invention, the contact of the linear heating member to the cathode ray tube is caused by the operation of the positioning slider and the slider provided on each holding means for tension.
It becomes constant irrespective of the size and degree of curvature of the cathode ray tube, and the yield of splitting the cathode ray tube can be improved. In addition, by controlling the amount of power to be applied to the linear heating member and the energizing time depending on the size of the cathode ray tube, the yield of division and the reliability of the division work can be improved.

[0032]

As described above, according to the present invention,
It is possible to stably divide the cathode ray tube by closely attaching the linear heating member to the curved shape of the side surface of the cathode ray tube.

[Brief description of the drawings]

FIG. 1 is a front view showing a preferred embodiment of a cathode ray tube splitting device according to the present invention.

FIG. 2 is a side view of a splitting device for a cathode ray tube.

FIG. 3 is a plan view of a cathode ray tube splitting device.

FIG. 4 is a plan view showing an embodiment of a dividing unit of the dividing device for a cathode ray tube.

FIG. 5 is a side view of the divided portion of FIG. 4 as viewed from W1.

FIG. 6 is a side view of the divided portion of FIG. 4 as viewed from the direction W2.

FIG. 7 is a perspective view schematically showing a division part of FIG. 4;

FIG. 8 is a diagram showing regions AR1 and AR2 in FIG. 7;

FIG. 9 is a view showing regions AR3 and AR4 in FIG. 7;

FIG. 10 is a diagram showing an initial state of a dividing unit.

FIG. 11 is a diagram showing a state in which a cathode ray tube is positioned by each slider of a division portion.

FIG. 12 is a diagram showing a state in which a linear heating member is pressed against a side surface of a cathode ray tube to split the cathode ray tube.

FIG. 13 is a perspective view showing a cathode ray tube, control means, and a power conditioner.

FIG. 14 is a diagram showing a state in which a cathode ray tube is divided.

FIG. 15 is a view showing grooves provided at four corners of a cathode ray tube.

FIG. 16 is a diagram showing an example in which a cathode ray tube is divided.

FIG. 17 is a plan view showing another embodiment of the cathode ray tube splitting device of the present invention.

FIG. 18 is a perspective view showing the embodiment of FIG. 17;

FIG. 19 is a view showing a position where a linear heating member is brought into contact with a cathode ray tube and a state where cracks grow.

FIG. 20 is a diagram showing a state of occurrence of concentrated cracks in a cathode ray tube.

FIG. 21 is a diagram showing an example in which springs are provided at both ends of a linear heating member.

[Explanation of symbols]

10: Cathode ray tube splitting device, 12: Splitting section, 1
3 backup unit, 20 cathode ray tube,
20A: Long side of cathode ray tube (long side), 20B
A short side (short side) of the cathode ray tube, 22 positioning means, 24 heating means, 26, 28 first positioning slider, 30, 32 second positioning slider,
34 ... cylinder (first driving means), 36 ... cylinder (second driving means), 40, 41, 42, 43 ...
Linear heating member (electric heating wire), 50 to 57... Linear heating member holding means, 62, 76.
..Springs (biasing means)

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Ken Yuda 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (56) References JP-A 9-169531 (JP, A) JP-A Heisei JP-A-9-169530 (JP, A) JP-A-9-171532 (JP, A) JP-A-9-171773 (JP, A) JP-A-9-171773 (JP, A) A) JP-A-9-171775 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01J 9/50

Claims (6)

(57) [Claims] 1. A cathode ray tube dividing apparatus for dividing a cathode ray tube into a panel portion and a funnel portion, wherein a positioning means for moving to a side surface of the cathode ray tube and hitting the side surface of the cathode ray tube to position the cathode ray tube at a predetermined position. And a heating means for the cathode ray tube which is moved to the side surface of the cathode ray tube along with the movement of the positioning means. The heating means for the cathode ray tube applies thermal distortion to the side surface of the cathode ray tube by energizing the panel, and Linear heating member for dividing the linear heating member into one part and a funnel part; holding means for holding the linear heating member holding one end and the other end of the linear heating member; And a biasing means of a heating member for bringing the member into close contact with a predetermined tension in accordance with the position of the cathode ray tube.
Touch the positioning slider and the short side of the side of the cathode ray tube
A second positioning slider and a first positioning slider
First driving means for contacting the long side of the side surface of the wire tube;
2 Touch the positioning slider to the short side of the side of the cathode ray tube
A splitting device for a cathode ray tube. 2. The cathode ray tube splitting device according to claim 1, wherein one of the first driving unit and the second driving unit has a movement amount detection unit for detecting a movement amount until the slider hits a side surface of the cathode ray tube. . 3. Identify the size of the cathode ray tube in accordance with the movement amount from the movement amount detection unit, according to claim 2 comprising control means for changing the energizing amount for linear heating member in accordance with the size of the cathode ray tube 3. The splitting device for a cathode ray tube according to claim 1. 4. A method for dividing a cathode ray tube into a panel portion and a funnel portion, the method comprising the steps of: moving a cathode ray tube to a side surface thereof; And a heating means moving step in which the heating means of the cathode ray tube is moved to the side of the cathode ray tube along with the movement of the positioning means.In the heating means moving step, heat is applied to the side face of the cathode ray tube by energizing. relative linear heating member for dividing the panel portion and the funnel portion giving, in accordance with the side shape of the cathode ray tube by applying a biasing force to close contact with a predetermined tension, the positioning step, the side surface of the cathode ray tube Short side and long side
A method of dividing a cathode ray tube, wherein a slider of a positioning means is applied to a side of the cathode ray tube. 5. The method according to claim 4 , wherein when the slider of the positioning means is brought into contact with the slider of the positioning means in the positioning step, an amount of movement until the slider of the positioning means hits the side surface of the cathode ray tube is detected.
3. The method for dividing a cathode ray tube according to item 1. Wherein the control means, in accordance with the moving amount by specifying the size of the cathode ray tube, the cathode ray tube according to claim 5 for changing the energization amount to the linear heating member in accordance with the size of the cathode ray tube Split method.