JPH0528920A - Polishing device for cathode-ray tube - Google Patents

Abstract

PURPOSE:To provide a cathode-ray tube polishing device whose maintainance is so easy that workability and economicity are enhanced. CONSTITUTION:A rotary polishing jig 3 and a pressurizing mechanism 4 are on the respective portions of the base 2 of a polishing machine 1. A polishing buff 7 is freely rotatably mounted on the rotary polishing jig 3 via a shaft 5 and a joint mechanism 6. The polishing buff 7 is formed by stainless felt. A conveying mechanism 8 is disposed below the polishing buff 7. The conveying mechanism 8 has an opening for positioning and holding and a cathode-ray tube T is held in the opening with the panel surface P of the cathode-ray tube T upward and a funnel F downward. An explosion-proof reinforcing band B is provided around the cathode-ray tube T. The polishing buff 7 impregnated with an aqueous solution of abrasives is lowered until it is made to abut on the panel surface P of the cathode-ray tube T on the conveying mechanism 8 by the pressurizing mechanism 4, and the cathode-ray tube is pressurized and polished while the buff 7 is brought into sealing contact therewith by the joint mechanism 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathode ray tube polishing apparatus for polishing a panel surface of a cathode ray tube in a cathode ray tube manufacturing process.

[0002]

2. Description of the Related Art When a conductive film such as an antireflection film or an antistatic film is formed on the surface of a cathode ray tube, or when a safety glass is adhered, the surface of the cathode ray tube is cleaned and dirty in advance. Need to be free.

As a device for cleaning the surface of the cathode ray tube as described above, for example, the structure described in Japanese Patent Publication No. 30237/1990 is known. The device disclosed in this Japanese Patent Publication No. 3-30237 holds a cathode ray tube with the panel facing downward, and cleans the cathode ray tube panel with a plurality of polishing jigs of animal and plant buffs to make the entire panel uniform. The cleaning solution is used to prevent the cleaning solution from flowing into the funnel of the cathode ray tube.

Then, generally, water, or water, a surfactant and chemicals are added to an abrasive for optical glass such as cerium oxide to prepare a polishing liquid, and the polishing liquid is applied to a treated surface or a buff. It is applied and polished.

[0005]

However, in the case of the above-mentioned device, since the buff is made of plants and animals, it has a low durability due to abrasion and a high replacement frequency. Therefore, there is a problem that maintenance is complicated and workability and economy are poor. is doing.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a CRT polisher which is easy to maintain and improves workability and economy.

[0007]

According to the present invention, there is provided an apparatus for polishing a cathode ray tube for polishing a panel surface of a cathode ray tube with a rotary polishing jig, wherein the rotary polishing jig is impregnated with an aqueous solution of an abrasive for optical glass. It has a polishing means formed from the above-mentioned stainless steel felt.

[0008]

According to the present invention, the polishing means of the rotary polishing jig is made of stainless steel felt to improve durability and reduce the frequency of replacement, and the aqueous solution of the polishing agent for optical glass is made of stainless steel felt. By impregnating the solution with water, dripping of the aqueous solution is prevented, maintenance is easy, and workability and economy are improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cathode ray tube polishing apparatus of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a polishing machine,
A rotary polishing jig 3 and a pressure mechanism 4 are attached to a base 2 of the polishing machine 1. A polishing buff 7 as polishing means is rotatably attached to the rotary polishing jig 3 via a shaft 5 and a joint mechanism 6. The polishing buff 7 is made of stainless felt.

Further, a transfer mechanism 8 is arranged below the polishing buff 7. An opening for positioning and holding is formed in the transport mechanism 8, and a cathode ray tube T is held in this opening with the panel surface P facing upward and the funnel F facing downward, and around the cathode ray tube T. An explosion-proof reinforcing band B is provided.

Further, in FIG. 3, 11 is an impregnation mechanism, and this impregnation mechanism 11 has a tray 12 having an upper opening for impregnating the polishing buff 7 with an aqueous solution of an abrasive. An aqueous solution of this polishing agent can be used as a polishing agent for optical glass such as cerium oxide.
Use water or one to which water, a surfactant and chemicals have been added. An opening 13 is formed on the lower surface of the saucer 12,
A supply pipe 14 is connected to the rear surface of the opening 13. On the other hand, 15 is a tank, and this tank 15 has a stirring mechanism 16
This tank 15 is connected to the pipe 14 via a valve 17 and a tubing pump 18 for constant quantity supply.

Further, in FIG. 4, reference numeral 21 is a wiping device, and this wiping device 21 has air blow mechanisms 22 and 23 arranged to face each other, and one air blow mechanism 22 has a plurality of nozzles 24. The high-pressure air is jetted from the tip of these nozzles 24 to the panel surface P of the cathode ray tube T. In the other air blow mechanism 23, a plurality of air ejection holes 26 are formed in the pipe 25, and the air ejection holes 26
High-pressure air is jetted from 26 toward the panel surface P of the cathode ray tube T from the direction facing the nozzle 24.

The other air blow mechanism 23 is attached to a moving plate 31, and this moving plate 31 has an opening 32 for suction, and an opening whose lower surface corresponds to the opening 32 is provided above the opening 32. The formed box-shaped vacuum suction hood 33 is attached, and the air in the vacuum suction hood 33 is exhausted from the exhaust port 34 and sucked from the opening 32 by negative pressure.

A roll brush 35 made of nylon and having a diameter of 0.3 mm is rotatably provided facing the opening 32. This roll brush 35 is driven by an air motor 36.
It is rotated via 37 and can be moved up and down by a swing mechanism 38. In addition, this roll brush 35,
In order to prevent the adherence of the abrasive, the one containing 20% of the antistatic agent is used.

Further, the moving plate 31 can be moved back and forth by a motor 39 via a gear mechanism 40.

Next, the operation of the above embodiment will be described.

First, as shown in FIG. 3, the polishing buff 7 is inserted into the tray 12 of the impregnation mechanism 11, and the aqueous solution of the abrasive is supplied from the tank 15 through the tubing pump 18 through the opening 13 at the bottom of the tray 12. A predetermined amount is supplied and the polishing buff 7 is impregnated with the aqueous solution of the polishing agent.

As shown in FIG. 1, the polishing buff 7 impregnated with the aqueous solution of the polishing agent is lowered by the pressing mechanism 4 until it comes into contact with the panel surface P of the cathode ray tube T on the transport mechanism 8. In addition, the pressing force at this time is 3 to 10 kg as a whole when the polishing buff 7 has a diameter of 100 mm. Then, the rotary buff 7 is always brought into close contact with the curved surface of the panel surface P by the joint mechanism 6, and the rotary polishing jig 3 is rotated to pressure-polish the panel surface P.
At the time of this polishing, as shown in FIG. 5, for example, the polishing machine 1 is first sequentially moved in the front-back direction, then sequentially moved in the left-right direction, and finally in the circumferential direction. Then, when completed, the pressing mechanism 4 raises the polishing buff 7, and the transport mechanism 8 moves the cathode ray tube T.

Next, the wiping device 21 wipes off the remaining aqueous solution of the abrasive.

First, compressed air is jetted from the opposing air blow mechanisms 22 and 23 to dry the aqueous solution g of the polishing agent remaining on the panel surface P of the cathode ray tube T. And the motor 39
The moving plate 31 is moved by, and the roll brush 35 is rotated by the air motor 36. At this time, the swing mechanism
The roll brush 35 is pressed against the curved surface of the panel surface P of the cathode ray tube T by the 38 so that the roll brush 35 is always in close contact with the panel surface P. And the roll brush 35
The dried abrasive on the surface P of the panel is wiped by the rotation of, and the abrasive is sucked by the vacuum suction hood 33 and discharged from the exhaust port 34.

According to the above-mentioned embodiment, since the felt made of stainless steel is used for the polishing buff 7, the wear is less than that of the conventional resin buff, the durability is increased, the replacement frequency is reduced, and the efficiency is improved. To do. Further, since the polishing buff 7 is impregnated with a predetermined amount of the aqueous solution of the polishing agent, it is possible to prevent the unnecessary aqueous solution of the polishing agent from entering between the cathode ray tube T and the explosion-proof reinforcing band B.

Furthermore, since the dried abrasive is sucked by the vacuum suction hood 33 and discharged from the exhaust port 34, the cleanliness in the process can be improved.

[0024]

According to the polishing apparatus for a cathode ray tube of the present invention, the rotary polishing jig is made of stainless felt, so that the durability can be improved and the frequency of replacement can be reduced. By impregnating a stainless felt with an aqueous solution of an abrasive, dripping of the aqueous solution can be prevented, so maintenance is easy and workability is improved.
Economic efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing a polishing machine of an embodiment of a polishing apparatus for a cathode ray tube according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view showing the same impregnation mechanism.

FIG. 4 is a perspective view showing the same wiping device.

FIG. 5 is an explanatory view showing a locus of polishing by the same polishing buff.

[Explanation of symbols]

 3 Rotary polishing jig 7 Polishing buff as polishing means P Panel surface T CRT

Claims (1)

Claim: What is claimed is: 1. A cathode ray tube polishing apparatus for polishing a panel surface of a cathode ray tube with a rotary polishing jig, wherein the rotary polishing jig is impregnated with an aqueous solution of an abrasive for optical glass. A cathode ray tube polishing apparatus having polishing means formed of stainless steel felt.