JP4082102B2 - Film surface removal method and film surface removal apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a means for polishing and removing various films that are inconvenient for recycling and are formed on the inner and outer surfaces of each CRT member separated into a funnel glass portion and a panel glass portion for the purpose of recycling the CRT. .
[0002]
[Prior art]
As a conventional film removal method, the abrasive grains are sprayed onto the surface of the object to be treated together with high-pressure air in a state where the funnel and the CRT member separated into the panel part are held in a chamber for preventing the abrasive grains from scattering. The film was worn and removed using the polishing force at the time of abrasive grain collision.
[0003]
[Problems to be solved by the invention]
Although the method of removing the film by abrasive grain spraying is an effective means, the same part is always exposed to the abrasive spraying for the structural components that hold and supply the cathode ray tube members and the device structural members such as the chamber inner wall. Therefore, when it is worn out violently, and it is forced to continually replace and replace these components, and it is continuously operated, its frequency is not limited to multiple times per month. there were. Inevitably, the maintenance cost was high, and it was an unprofitable means.
[0004]
The present invention eliminates short-term wear of device components caused by spraying abrasive grains, eliminates the need for repair and replacement of these device components for a long time, and enables operation with low maintenance costs. It is provided as a high film polishing removal device.
[0005]
[Means for solving problems]
The film removal method of the present invention introduces a small lump or spherical material of any material as a wear protection material into a chamber where abrasive grains are sprayed, and a mechanism member disposed in the chamber inner wall and the chamber is provided with the wear protection material. It is deposited in a state where it is buried or covered underneath, and the object to be treated is placed on it, and abrasive grain spraying is performed. It is directly exposed to the abrasive grain that is applied to the object to be treated and the wear protection material. The mechanism is limited.
[0006]
As a result, not only the inner wall of the chamber but also the drive mechanism member in the chamber can be protected from being worn by the sprayed abrasive grains without impairing the operation function.
[0007]
On the other hand, the object to be treated is mounted on the wear protection material, and its lower surface is buried in the fluid wear protection material, so there is no need for a specific holder even if it has a variety of irregular shapes. Since the surface to be processed is held and fixed in a stable state with the surface to be processed being mounted, it is easy to mount upside down, and it is easy to process both sides of the three-dimensional deformed object.
[0008]
As a result, the present invention has greatly improved the processing efficiency and dramatically improved the life of the apparatus constituent members.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is a basic configuration of the present invention, and as an anti-wear material, the outer diameter is about 10 to 30 mm and the density is about 0.1 to facilitate supply and discharge inside and outside the shielding box (chamber). Applying the above-mentioned synthetic resin, or a spherical body or a lump made of the foamed material, at least the chamber inner wall bottom surface and the mechanism provided on the chamber inner bottom surface are deposited in a buried state. In such a situation, after the processed material carried into the chamber through the opening provided with the opening and closing door is placed at a predetermined position on the wear protection material, the fine particles of general-purpose glass material having an average particle size of several hundred microns are used. The abrasive grains to be formed are sprayed and collided with the high-pressure gas on the surface of the treatment object, and the formed film on the surface of the treatment object is removed by the friction polishing force.
[0010]
At the time of abrasive grain spraying, the abrasive grain spray nozzle is appropriately arranged and rocked at a predetermined angle so that the surface to be treated of a wide variety of processed objects can be uniformly exposed to the sprayed abrasive grains. A mechanism that rotates the object together with the wear protection material or moves the object to be processed in a circular arc so that the processing object range can be covered while the abrasive spray nozzle is swung at a predetermined angle. The system is configured to cover the processing surface range of a wide variety of processing objects that are not constant.
[0011]
It should be noted that the wear protection material and abrasive grains are deposited on the bottom surface of the chamber in a mixed manner. However, a plate or a metal mesh structure having numerous elongated holes or cross-shaped holes is provided, and a separate installation is required. By having a configuration with a “vibration function” combined with a vibration device, only the abrasive grains are separated by passing through the holes, and a separate cyclone device is provided to separate and collect the abrasive grains for spraying. A mechanism for recurring and reusing as a grain is incorporated, but since these means are general techniques, description of this method configuration is omitted.
[0012]
In addition, the present invention uses a general-purpose thermoplastic synthetic resin as a wear protection material to be applied in the film surface removal method, cuts the rod-shaped body during extrusion molding, and has a predetermined size of about 10 to 30 mm in outer diameter. A small piece is used. As the synthetic resin, it is possible to use a crushed synthetic resin molded product waste collected for the purpose of recycling.
[0013]
In addition, the present invention utilizes an anti-abrasion material applied in the method for removing a coating film, which is obtained by crushing an object to be processed into a predetermined size having an outer diameter of about 5 to 10 mm to form a small lump. It eliminates the need for special purchase preparation as a protective material.
[0014]
The present invention utilizes these film polishing removal methods, and applies the CRT of the television set collected after disposal to a part of the processing step for adapting to the quality of the recycled glass member. This is a processing system for recycling.
[0015]
(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0016]
As shown in FIG. 1, the apparatus according to the embodiment of the present invention includes a door 3 at a loading / unloading portion 2 for a processed product in a shielding box (chamber) 1, while a bottom vessel 5 provided with an inclined wall 4 is provided with a rotation driving unit. 6 is in a state where it is in contact with it in a state where it is placed on it and is rotatable.
[0017]
On the other hand, the wear protection material 7 is put into the bottom surface container 5 in the shielding box (chamber) 1 and is deposited almost up to the height of the inclined wall 4.
[0018]
In an appropriate state, the door 3 of the loading / unloading part 2 is opened, the workpiece 8 is mounted on the wear protection material 7, and a part of its lower surface is pushed into the wear protection material 7 so as to hold the processing surface up. State, door 3 is closed, and preparation is completed.
[0019]
Thereafter, the abrasive grains 10 and the nozzle 11 introduced with high-pressure air are sprayed with the high-pressure air for a predetermined time toward the surface of the workpiece 8 on the wear protection material 7 below, while the bottom container 5 is horizontally disposed. Abrasion treatment while rotating in the direction.
[0020]
In this case, even when the bottom surface container 5 is in a stationary state and the nozzle 11 is swung at a predetermined angle and moved in a horizontal arc around the workpiece 8, the same function is achieved.
[0021]
After spraying for a predetermined period of time, the door 3 of the loading / unloading port 2 is opened, the upper and lower surfaces of the workpiece 8 are reversed and placed on the wear protection material 7 again, and the abrasive grains 10 are sprayed again in the chamber 1 for a predetermined period of time. To complete the processing on both sides.
[0022]
In this case, there is no problem even if the abrasive grains 10 are sprayed at a plurality of locations in the shielding box (chamber) 1 and both surfaces are processed simultaneously.
[0023]
The abrasive protective material 7 deposited in the shielding box (chamber) 1 is mixed with abrasive grains 10, but is coupled with a separately installed vibration device 14 and innumerable provided at the bottom of the bottom container. The abrasive grains 10 are separated and recovered by a “shaking function;” or “classifying function” that allows only the abrasive grains 10 to pass through the opening holes 12 of the nozzles, and returned to the storage container 42 for reuse for spraying. .
[0024]
On the other hand, the air in the chamber is separately sucked into the shielding box (chamber) 1 from the suction opening 13 so that the abrasive grains 10 scattered in the shielding box (chamber) 1 are not scattered outside the shielding box (chamber) 1. The vacuum suction device that maintains the negative pressure state, the cyclone device that separates and collects the abrasive grains 10 mixed in the suction gas, and the filter device that returns the suction gas to the room are generally used for the abrasive spraying means. Although it is necessary as a typical accessory device, it is not an essential element of the function of the present invention, so illustration and detailed description are omitted.
[0025]
【The invention's effect】
According to the present invention, it is possible to eliminate the short-term wear of the device constituent members caused by the spraying of abrasive grains, and it is not necessary to repair and replace these device constituent members for a long period of time, and it is possible to operate at a low maintenance cost. It is provided as a highly efficient film polishing removal device, which can greatly improve processing efficiency and reduce processing costs.
[0026]
Therefore, the maintenance period is prolonged, and the running cost including equipment maintenance costs, such as replacement and repair costs for equipment components, is reduced from 1/10 to 1/20 or less.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional view showing an outline of basic components in a method and apparatus for removing a CRT from a CRT according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the apparatus. FIG. 4 is a diagram showing the treatment state of the inner surface of the funnel portion of the cathode ray tube, which is the processed material. FIG. 4 is a diagram showing the treatment state of the inner surface of the panel portion of the cathode ray tube in FIG. FIG. 6 is a diagram showing a processing state of the previous CRT. FIG. 6 shows another embodiment of the present invention, and shows a processing system in which the coating grinding removal means is applied for the purpose of recycling the CRT member. Explanation】
1 Shielding box (chamber)
2 Workpiece loading / unloading section 3 Door 4 Bottom container inclined wall 5 Bottom container bottom section 6 Bottom container rotation drive section 7 Wear protection material 8 Processed object 9 Abrasive grains 10 naturally falling from bottom opening hole 10 Abrasive grains 11 Abrasive grains Spray nozzle 12 Bottom container bottom opening 13 Suction opening 14 Exciting device 81 CRT tube funnel section 82 CRT panel section 83 CRT in non-separated state

Claims (3)

A method of removing by colliding Kenso the film adhering to the surface of the abrasive grain processing object was ejected from the nozzle, covering the mechanism member to friction dark protective material deposited in the shield box, the wear armor A film polishing removal method, characterized in that abrasive grains are sprayed onto the surface of the object to be processed , a part of which is pressed into the surface. 2. The film wound removal method according to claim 1, wherein the shielding box or the nozzle rotates or swings . A shielding box having a mechanism member inside; a wear protection material that is deposited in the shielding box and covers the mechanism member; and a part of the processing object is pushed in; and is attached to a surface of the processing object. A film polishing removal apparatus comprising a nozzle for spraying abrasive grains on a film.

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