JP2003212580A - Separation method of cathode-ray tube and separation device therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separation method of a cathode-ray tube, which stabilizes the operation of a cathode-ray separation means and improves separation accuracy and quality effectively and shorten a treatment time, and a separation device therefor. <P>SOLUTION: Tension is applied to both ends of a heat generator which is drawn out of a gap between a pair of energization collector pieces forming a prescribed gap and the drawing direction is set so as to become a vector stress with which an energization collector pressurizes the outer peripheral surface of the cathode-ray tube. On the other hand, on the central part of the heat generator of the outer peripheral surface side of the cathode-ray tube facing oppositely to the side of the energization collector, the lifting and floating of the heat generator is dissolved by electrically heating the cathode-ray tube in the connection state with an intermediate pressurizing piece which is separately disposed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel part of a cathode ray tube which utilizes the thermal stress strain generated by contacting a wire or strip heating element in order to recycle a discarded cathode ray tube as a cathode ray tube material again. The present invention relates to a method of separating a funnel portion and a pressing or winding form of a heating element in an apparatus for implementing the same.

[0002]

2. Description of the Related Art Conventional (Japanese Patent Application No. 2000-208094)
In the separation method, as shown in FIG. 5 (a), one end of the wire or the strip-shaped heating element 1 wound on the reel is fixed to the starting end pressing member 9 and pressed against the cathode ray tube 6 to apply tension. It is wound together with the cathode ray tube 6 and made to rotate almost once, and is wound around the outer peripheral surface of the cathode ray tube 6, and the terminal end portion 8 of the heating element is pressed against the cathode ray tube 6 by the terminal end slide electron 8, and electricity is applied between the starting end presser 9 and the end end slide electron 8. Then, the heating element 1 is caused to generate heat, and a crack due to thermal stress strain is generated on the outer peripheral surface of the cathode ray tube 6 to separate the cathode ray tube at a predetermined position.

[0003]

When the wire or band-shaped heating element 1 is heated, it expands in length and hangs down. Therefore, the tension applied to the heating element 1 is used to make contact with the terminal sliding electron 8. The expansion amount was drawn from one end, but the amount of extraction is relatively large because the expansion amount of the entire outer peripheral surface of the cathode ray tube 6 is targeted.

At the four corners of the cathode ray tube 6, however, the tension applied to the heating element 1 acts as a frictional resistance, and the terminal sliding electron 8 is applied to press the heating element 1 against the outer peripheral surface of the cathode ray tube 6. In order to pull out the heating element 1 instantly, it was necessary to apply a relatively strong tension.

On the other hand, the outer peripheral surface of the cathode ray tube 6 is formed with a taper (inclination), which is indispensable in the molding process at the time of manufacturing, according to the strength of the tension applied to the heating element 1, and
Depending on the amount of lateral movement when pulling out the expansion, a phenomenon of rising up along with the taper occurs, the heating part moves with the passage of heating time, and the thermal stress strain generation is not concentrated and becomes a defect was there.

As a result, a shock is applied with a hammer,
There were many cases where a good separation state could not be obtained even with the auxiliary work for careful separation.

Further, it takes a longer heating time than necessary to generate cracks, and the heating time longer than necessary often causes irregular cracks to be generated or fractured at a position other than a predetermined separation position.

Further, as shown in FIG. 7, when the direction of drawing out the expansion of the heating element is at a wide angle with respect to the outer peripheral surface of the cathode ray tube 6 and the applied tension is strong, the terminal slide electron 8 is emitted from the outer peripheral surface of the cathode ray tube 6. As a result, the amount of heat generated from the heat generating element 1 is not sufficiently transmitted to the outer peripheral surface of the cathode ray tube 6 and causes a thermal stress strain generation defect, and the heat generating element 1 becomes a red heat state and is thermally softened. Therefore, it is not uncommon for the applied tension to cause cutting.

Therefore, a mechanism having a function of pressing the terminal slide electrons 8 against the outer peripheral surface of the cathode ray tube 6 is separately indispensable.

However, if the pressing force is increased in order to prevent the trailing edge sliding electron 8 from floating, it is necessary to increase the applied tension to pull out the heating element, and it is extremely difficult to set a balanced optimum value. It was

On the other hand, even if the heat expansion component is drawn out from both ends of the heat generating element, if the relative stress difference or the mutual operation timing is deviated, the lateral movement amount of the heat generating element 1 is increased conversely, which is an adverse effect. Therefore, the phenomenon in which the heating element 1 slides up becomes more remarkable.

The present invention eliminates the phenomenon of rising and rising of the heating element. As a cathode ray tube separating means,
The present invention provides a separation method and a device for performing the same, which is highly effective in obtaining high operation stability, improving separation accuracy and quality, and shortening processing time.

[0013]

According to the present invention, the expansion amount of the heating element wound around the outer peripheral surface of the cathode ray tube is withdrawn from both the beginning and the end of the winding, and the amount of movement when the heating element is withdrawn is halved. In addition, the tension applied to both ends of the heating element is arranged so that it acts as a vector stress that presses the sliding electrons against the outer peripheral surface of the cathode ray tube, so that the tension is completely synchronized in accordance with the expansion of the heating element 1 when energized. By using the mechanism in which the change in the pressure vector stress acting on the sliding electrons changes in a completely synchronized manner, the phenomenon in which the heating element 1 rises and the phenomenon in which it rises is eliminated.

Further, on the outer peripheral surface of the cathode ray tube 6 facing the surface in contact with the sliding electrons, an intermediate pressing member 4 is separately provided to fix the central portion of the heating element, and the heating element slides up at the fixing portion. And the lateral movement is eliminated, and the amount of the heating element pulled out is divided into two at the position of the intermediate pressing member 4 so that the sliding electron pair (2
With the synergistic effect of dispersing and drawing out from each of a) and b), the phenomenon in which the heating element slides up along the taper to the entire outer peripheral surface of the cathode ray tube is further improved.

In this case, the applied tension may be increased in parallel only when the current is applied and the tension may be increased in parallel.
The effect of the present invention and the stability of a series of operations of the process of the present invention are further enhanced.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, both ends of a wire or strip-shaped heating element are wound on a reel in a state where they can be pulled out, and a central portion thereof is joined to an intermediate pressing member which is separately provided. In addition, appropriate tension is applied between the plurality of sliding electrons so that they are horizontally stretched.

Then, the cathode ray tube to be processed on the holding table is moved up and down by a lifting device separately provided under the holding table to match the stretched heating element to the position where the cathode ray tube is to be separated, and then the intermediate presser. After pressing the heating element to the planned separation position on the outer peripheral surface of the cathode ray tube, move each sliding electron along the planned separation position, and slide the sliding electron at the center of the outer peripheral surface that is symmetrical to the contact surface of the intermediate presser. The heating element is wound around the outer peripheral surface of the cathode ray tube 6 by pressing the cathode ray tube 6 with a gap formed between them.

In a suitable state, a predetermined heating electric power is applied for a predetermined time through the peripheral end presser to generate heat in the heating element to generate cracks due to thermal stress strain on the outer peripheral contact surface of the cathode ray tube 6. As shown in FIG. 4, the panel section 11 and the funnel section 12 are separated.

Applying tension to both ends of the wound heating element 1 not only has the effect of reducing the amount of expansion of the heating element 1 by half per unit sliding electron and reducing the rising of the heating element 1, but also the above-mentioned effect. As described above, the tension application direction is limited to the range in which the line connecting the reel and the sliding electrons 2a and 2b is at an angle of approximately 45 degrees or less with respect to the outer peripheral surface of the cathode ray tube 6, so that the sliding electrons 2a and 2b and the heating element 1 are formed. Has an effect of transmitting heat calories to the planned separation position on the outer peripheral surface of the cathode ray tube 6 in a stable and efficient manner by exerting a vector stress in a direction of pressing the outer peripheral surface of the cathode ray tube 6.

At this time, immediately after the power supply to the heating element is finished, the outer circumference of the cathode ray tube is wiped with a compress containing water so as to cause a rapid temperature change due to heat of vaporization to promote the formation of cracks. The combined use of (1) and (2) eliminates the rise of the heating element and further enhances the effect of the present invention in which the thermal stress strain is locally concentrated.

(Embodiment 1) As a basic configuration of a method for carrying out the present invention, a cathode ray tube 6 to be treated is installed on a cathode ray tube holder 14 equipped with a lifting mechanism 13 shown in FIG. However, hereinafter, the first embodiment of the present invention
The configuration will be described with reference to the drawings.

As shown in FIGS. 1A and 10.
Take-up reels 3a, 3 arranged at predetermined positions on the mounting plate 5
b and the metal sliding electrons 2a and 2b for pressing and energizing are arranged on both sides with a space larger than the outer diameter of the processing cathode-ray tube 6 on the holding table, and the reels 3a and 3b have a line or strip shape. The heating element 1 is wound up, and the reels 3a and 3b are combined with a separately provided torque motor 15 to apply a tension due to a rotating torque to the heating element 1 and stretch it between the reels 3a and 3b and the sliding electrons 2a and 2b. At the same time, its central portion is fixed to a separately provided intermediate pressing member 4 with screws 7.

Next, the treated cathode ray tube 6 on the holding table is moved up and down by a separately provided elevating mechanism 13 so that the separation target position of the cathode ray tube 6 and the stretched heating element 1 coincide with each other.

Next, the sliding electron 2a and the reel 3a, and the sliding electron 2b and the reel 3b are moved forward by a driving means such as a ball screw mechanism separately provided with a structure assembled in a predetermined arrangement. After bringing the body 1 into contact with one surface of the outer circumference of the cathode ray tube 6,
a and 2b are moved in parallel along the planned separation position on the outer peripheral surface of the cathode ray tube 6, and then moved to the center of the outer peripheral surface opposite to the contact point of the intermediate presser 4 by a separately provided driving means such as a ball screw mechanism, and the sliding electron 2a. 2b is brought into contact with the cathode ray tube 6 by the above-described ball screw mechanism in a state where a gap is formed between the heaters 1 and 2b.
The winding is completed on the outer peripheral surface of.

In this structure, the direction in which the heating element 1 is pulled out to the take-up reel through the sliding electron gap is, as shown in FIG. Place each in the range of.

In a suitable state, the sliding electron 2 depending on the applied tension is used.
The vector stress acting on a and 2b acts in the direction of pressing the outer peripheral surface of the cathode ray tube 6, and the heating element 1 floats up even if no additional stress for pressing the outer peripheral surface of the cathode ray tube 6 is applied to the sliding electrons 2a and 2b. Without sticking to the outer peripheral surface of the cathode ray tube 6.

It has already been confirmed that the same effect can be obtained even if the tension applying angle is 45 degrees or more when an auxiliary pressing mechanism for pressing sliding electrons against the cathode ray tube 6 is provided.

In this state, the heating element 1 is supplied with a predetermined electric power for a predetermined time from the separately provided power supply device 17 shown in the schematic system configuration diagram of the present invention of FIG. 10 via the both slide electrons 2a, 2b or the intermediate presser 4. To generate heat and generate cracks due to thermal stress strain at the planned separation position on the outer peripheral surface of the wound cathode ray tube 6 to achieve separation.

A feature of the present invention is that when heat-generating expansion is generated in the heating element 1 and it is about to be pulled out from the sliding electron gap, the tension is relaxed and pushed by the vector stress acting on the sliding electrons 2a, 2b. The pressure naturally relaxes, making it easier to pull out,
When the amount of withdrawal is exhausted, an extremely ideal state in which a predetermined pressing force is exerted is maintained, and this action is maintained irrespective of the presence or absence of energization heat generation, which is one of the major features of the present invention. is there.

The reason why the heating element 1 requires a relatively large tension is that the heating element 1 is energized and heated.
A driving mechanism 15 such as a torque motor for applying a tension to the heating element 1 is controlled by its control circuit 16 to give an appropriate strength or weakness to each step, such as a winding step of the heating element 1 which requires a relatively weak applied tension. As a result, it is possible to eliminate any chance of the heating element 1 sliding up in the steps other than the electric heating step, which further enhances the stability of the separation method of the present invention.

The heating element 1 is generally used in 0.1.
A 5 t × 2.4 mm nichrome wire rod was used.

(Embodiment 2) Although it has the same purpose as Embodiment 1, it is more complete in terms of effects and functions.

As shown in each of FIGS. 8 and 9, the difference from the first embodiment is that a plurality of sliding electron pairs (2c, 2c) are provided.
d), ..., (2i, 2j) or intermediate pusher (4
b, 4c), and the take-up reels (3c, 3c) of the heating elements (1a, 1b, 1c, 1d) according to the number of installed sliding electron pairs.
d), ..., (3i, 3j) are arranged and implemented, the expansion amount of the heating element 1 extracted from the gap of each sliding electron (2c, 2d), ..., (2i, 2j) pair. Are subdivided in proportion to the number of installed sliding electron pairs to make the extraction amount of each extremely small, and to make each heating element (1a, 1b, 1
It is possible to obtain a more ideal separation state by making the specifications and current values of (c, 1d) different and making the heat generation different so that cracks are generated in sequence at each part of the outer circumference of the cathode ray tube 6. It is a thing.

In this case, each heating element (1a, 1b, 1)
When the same current is applied to c) and 1d), the sliding electrons forming the gap can be electrically short-circuited except at one point where a voltage is applied, and different currents can be applied to each. When energizing, it becomes possible by connecting a separate power supply device between the target sliding electrons.

FIG. 9 shows an example in which the two positions (2e, 2f) and (2i, 2j) of the four sliding electron pairs shown in FIG. 8 are replaced by intermediate pressers (4b, 4c). , An effect substantially similar to the case of FIG. 8 is obtained.

In the embodiment of the present invention, immediately after the energization of the heating element 1 for a predetermined time is completed, the surface of the heated portion on the outer periphery of the cathode ray tube 6 is wiped with a compress containing water, or an air stream or sprayed water is used. It is needless to say that the combined use of the conventional general method of spraying to promote crack formation further enhances the effect of the present invention.

[0037]

According to the separation method of the first aspect of the present invention, when the heat-generating expansion is generated in the heating element 1 and is about to be pulled out from the sliding electron gap, the tension is loosened and the sliding electron is released. The pressing force due to the vector stress acting on 2a and 2b is naturally loosened to make it easier to pull out,
An extremely ideal state in which a predetermined pressing force is exerted is maintained, and this action is constantly maintained regardless of the presence or absence of heat generation by energization, which greatly affects the quality of the separated state of the cathode ray tube using thermal stress strain. Practical elimination of the phenomenon of rising and rising of the heating element 1 is an extremely effective method for improving separation accuracy and quality, and shortening the processing time due to homogenization and efficiency of the separation, resulting in a reduction in processing cost. Reduction is achieved, which is one of the major features of the present invention. .

According to the separation method of claim 2 of the present invention,
The rising element and lateral movement of the heating element at the fixed portion of the intermediate pressing element 4 are eliminated, and the amount of withdrawal of the heating element is divided into two at the position of the intermediate pressing element 4 so that the sliding electron pair (2a, Two
This is intended to further improve the phenomenon in which the heating element slides up along with the taper reaching the entire outer peripheral surface of the cathode ray tube by a synergistic effect of being dispersed and extracted from each of b).

According to the separation method of claim 3 of the present invention,
The heating element 1 requires a relatively large tension during the heating of the heating element 1 by energization. Therefore, the heating element 1 may be wound with a relatively weak tension, such as the winding step of the heating element 1. By giving appropriate strength and weakness, it is possible to eliminate the chance of the heating element 1 rising up except the electric heating step, and further enhance the stability of the separation method of the present invention.

According to the separating device of the fourth and fifth aspects of the present invention, a separating device having minimum functions necessary for carrying out the method for separating the cathode ray tube 6 of the first to third aspects is provided. The effect of the separation method of the present invention can be reproduced by using at least the device.

[Brief description of drawings]

FIG. 1 (a) is a schematic plan layout view of the present invention, showing a state before a heating element is wound around an outer circumferential surface of a cathode ray tube (b). FIG. 1 (b) is a schematic plan layout diagram of the present invention. 5 is a view showing a state in the middle of winding the heating element around the outer peripheral surface of FIG.
(D) A diagram showing a final stage state of winding a heating element around the outer peripheral surface of the cathode ray tube 5 according to the present invention.
Showing the state where the heating element has been wrapped around the outer peripheral surface of the

FIG. 2 is an enlarged view of a portion B of FIG. 1 (d) of the present invention, which is a conceptual diagram showing a stress vector direction acting on sliding electrons due to applied tension to a heating element drawn out from the sliding electron gap.

FIG. 3 is an enlarged view of part A of FIG. 1 (b) of the present invention.

FIG. 4 is a diagram showing a state in which a cathode ray tube 5 of the present invention is separated into a panel portion and a funnel portion.

5A is a schematic plan layout diagram of a conventional method, showing a state in which a heating element has been wound around the outer peripheral surface of the cathode ray tube 6; FIG. 5B is a schematic front layout in FIG. 5A of the conventional method. Diagram

FIG. 6 is an enlarged view of a portion C in FIG. 5B of a conventional method, showing a state in which a heating element wound around the outer peripheral surface of a cathode ray tube 6 is slid up along with a taper formed on the outer peripheral surface.

FIG. 7 is an enlarged view of a portion D of FIG. 5B of the conventional method, showing a state in which the terminal sliding electrons 8 and the heating element 1 are lifted up by the tension applied to the heating element 1.

FIG. 8 is a schematic plan layout configuration diagram according to a second embodiment of the present invention, in which a heating element 1 in the case where a pair of sliding electrons and a winding reel for a heating element are provided at a plurality of positions is provided on an outer peripheral surface of a cathode ray tube 6. Diagram showing the state before pressing

FIG. 9 is an embodiment of the present invention, in which two of the four pairs of sliding electrons in FIG. 8 of the second embodiment of the present invention are replaced with intermediate pressers, and the heating element is wound around the outer peripheral surface of the cathode ray tube 6. Explanatory diagram showing the state

FIG. 10 is a diagram showing a schematic system configuration diagram according to the first and second embodiments of the present invention.

[Explanation of symbols]

1 heating element 1a, ..., 1d heating element 2a, 2b ... 2j 3a, 3b ... 3j Heater winding reel 4a, 4b Intermediate pusher 5 Sliding electron and heating element take-up reel mounting plate 6 CRT 7 Screws for tightening and fixing the heating element 8 terminal 9 Tip pusher 10 Heating element take-up reel 11 CRT panel section 12 CRT funnel 13 CRT up / down mechanism 14 CRT holder 15 Tension applying drive mechanism (eg torque motor etc.) 16 Control circuit device 17 Power supply device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuo Sasaki             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Katsuya Sawada             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Yutaka Matsuda             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 4G015 FA06 FB05                 5C012 AA02

Claims (5)

[Claims] 1. In a cathode ray tube separation method, wherein a wire or strip heating element is wound around an outer peripheral surface of a cathode ray tube or energized to generate heat to generate cracks due to thermal stress strain on the outer peripheral surface of the cathode ray tube, tension is applied to both ends. The heating element in this state is stretched between a pair of energizing sliding electrons, and is installed at one or more locations on the outer surface of the cathode ray tube to form an arbitrary predetermined gap between the sliding electrons. , The heating element is pressed or wrapped around the outer surface of the cathode ray tube, and the tension of the heating element causes each sliding electron to press the outer peripheral surface of the cathode ray tube via the heating element so that the vector stress acts to generate heat via the sliding electron. A method for separating a cathode ray tube, which is characterized in that a predetermined electric power is applied to the body. 2. The cathode ray tube separating method according to claim 1, wherein an intermediate presser is separately provided on an outer peripheral surface of the cathode ray tube opposite to the energizing sliding electron pair arranged with a predetermined gap. The method for separating a cathode ray tube according to claim 1, wherein the method is performed in a state where a predetermined position on the outer peripheral surface is pressed in a state of being joined to the central portion of the heating element. 3. The method for separating a cathode ray tube according to claim 1 or 2, wherein the heating element is wound around the cathode ray tube, and the applied tension is changed to an optimum value in each step of energization heat generation and release winding. The method for separating a cathode ray tube according to claim 1 or 2, wherein the method is carried out as follows. 4. A pair of energizing devices provided at one or a plurality of positions where both ends of a wire or strip heating element are stretched with a predetermined tension as a separation device for a cathode ray tube for carrying out the separation method according to claim 1. The sliding electronic mechanism and the energizing sliding electron are attached to the tip, move along the outer peripheral surface of the cathode ray tube, and wind the heating element around the outer peripheral surface of the cathode ray tube.
The driving mechanism provided to press the outer surface of the cathode ray tube with a gap formed between the pair of energizing sliding electrons and the tension of the heating element cause the vector stress acting on the energizing sliding electrons to press the outer surface of the cathode ray tube. Mounting mechanism to be placed in
A power supply unit that supplies a predetermined amount of power via the
A cathode ray tube separating device characterized by having the structure provided. 5. A cathode ray tube separating apparatus for carrying out the separating method according to claim 2, wherein in addition to the configuration of the cathode ray tube separating apparatus according to claim 3, the opposite surface on which the energizing sliding electron pair is in contact. 2. An apparatus for separating a cathode ray tube, wherein the cathode ray tube outer peripheral surface is provided with an intermediate presser having a mechanism for pressing a predetermined position on the outer peripheral surface in a state of being joined to the central portion of the heating element.