KR200258244Y1 - Multilayer Film Coating Device of Cathode Ray Tube - Google Patents

Abstract

Fixed part so that the cathode ray tube is tightly fixed and fixed in order to reduce the dispersion of quality and the production cost by reducing the consumption of unnecessary chemicals while preventing uniform air flow in the drum to form a uniform multilayer film on the face glass of the cathode ray tube. And a top plate on which the seal is mounted. A drum coupled to the bottom of the upper plate without a gap and having a pulley attached to a lower portion thereof, and having a space formed therein, a drive motor connected to a pulley formed on a lower outer circumferential surface of the drum and transmitting a rotational force to the drum; Located in the inner space of. And a coating means for spraying the chemical liquid onto the face glass of the cathode ray tube, a drum support for supporting the bottom of the drum, and a base to which the drum support and the driving motor are fixed.

Description

Multilayer film coating apparatus of cathode ray tube.

The present invention relates to an apparatus for forming a multilayer film in a cathode ray tube. More specifically, the present invention relates to a multilayer film coating apparatus capable of improving the quality by preventing the movement of airflow caused by the rotation of the rotating upper plate when forming the multilayer film on the face glass of the cathode ray tube for antistatic.

Generally, in the manufacturing process of a cathode ray tube, a multilayer film coating process is a process of coating a multilayer film on the face glass of a cathode ray tube before attaching a deflection yoke etc. to the cathode ray tube which performed exterior graphite coating and bending.

The multilayer coating is performed by a method of spraying water glass containing an antistatic agent and an antireflective agent evenly onto the face glass by rotating the top plate on which the cathode ray tube is mounted to spread the face glass evenly.

As described above, the cathode ray tube subjected to the multilayer film coating has a higher efficiency of antistatic and antireflection prevention to light than other cathode ray tubes.

As shown in FIG. 2, the multi-layer coating apparatus used when the top plate is rotated by the spray method and the multi-layer coating is applied, the top plate 2 on which the face glass of the cathode ray tube B is mounted toward the ground is belted on its outer peripheral surface. (17) is wound, and this belt (17) is connected to the pulley (13) interposed in the drive motor (11).

In addition, at the bottom of the upper plate 2, the drum 1 having the application means 7 is supported by the top plate 2, and the application means 7 is an injection unit on which the nozzle 8 is mounted ( 9) and a pipe 10 supporting the injection hole and supplying the chemical liquid to the nozzle.

In the multilayer film coating apparatus g configured as described above, when the driving motor 11 to which the pulley 13 is attached rotates, the rotational force is transmitted to the belt 17 surrounding the pulley 13 to rotate the upper plate 2. In this case, the chemical solution is sprayed from the coating means 7 to form a multilayer film on the face glass of the cathode ray tube B which rotates together with the upper plate 2.

However, the conventional multi-layer coating apparatus as described above has a multi-layered film formed irregularly in the face glass of the cathode ray tube due to the rotation of the air flow introduced into the gap between the top plate and the drum in the manner that only the top plate rotates. There is a problem that dispersion occurs in quality.

In addition, the chemical liquid sprayed by the spray method is a gas due to the alcohol component contained in a large amount has a disadvantage that the unnecessary consumption of the chemical liquid is generated as it is leaked into the gap.

Therefore, the present invention was devised to solve the above problems, and an object of the present invention is to prevent the rotation of air flow generated in the drum to form a uniform coating film and at the same time minimize the unnecessary consumption of chemicals, production and distribution of quality It is to provide a multi-layer coating device that can lower the cost.

In order to realize the multi-layer coating device according to the present invention and the top plate is provided with a plurality of fixing parts and the sealing portion so that the cathode ray tube is tightly fixed. A drum coupled to the bottom of the upper plate without a gap and having a pulley attached to a lower portion thereof, and having a space formed therein; a drive motor connected to a pulley inserted into a lower outer peripheral surface of the drum by a belt and providing rotational force to the drum; It is inserted into the inner space of the drum and the application means for applying the chemical liquid to the face glass of the cathode ray tube and a drum support for supporting the bottom of the drum and the base is fixed to the drum support and the drive motor.

The bottom of the upper plate and the top of the drum is characterized in that the fastening with a screw.

Vibration suppression means for minimizing the vibration caused by the rotation of the drum is mounted to the outer peripheral surface of the central portion of the drum, the vibration suppression means is composed of a sliding member, the housing and the joint member.

One side of the drum support is characterized in that the exhaust means consisting of an exhaust port and a fan is mounted to exhaust the gas of the alcohol component is injected and vaporized by the coating means.

The drum support part is provided with a discharge pipe for discharging the chemical liquid introduced into the groove formed in the drum support part.

The distal end of the base is provided with a moving means composed of a wheel and a base support member to fix or move the base to the ground.

The multilayer film coating apparatus configured as described above is provided with the rotational force of the upper plate and the driving motor to which the cathode ray tube is fixed, and the rotating drum is screwed without any gap, so that no air flow occurs, and thus, sprayed from the coating means installed in the space inside the drum. The chemical liquid is coated with a uniform multilayer film in the face glass of the cathode ray tube.

Hereinafter, with reference to the accompanying drawings, the preferred configuration and operation of the present invention will be described in more detail.

1 is a partial cross-sectional front view of a multilayer film coating apparatus according to the present invention.

2 is a partial cross-sectional front view of a multilayer film coating apparatus conventionally used.

1 is a partial cross-sectional front view of the multilayer coating device (G) according to the present invention, although not shown in this figure, the cathode ray tube (B) is partially inserted so that the face glass faces the ground in the hole formed in the upper plate (2) It is firmly fixed by the fixing means and the sealing part.

On the other hand, the drum 1 is coupled to the bottom of the upper plate 2 without a gap using a plurality of screws 4, and the drum 1 has a shape where the diameter of the upper part is longer than the diameter of the lower part. In the interior of the application means 7 for applying the chemical to the face glass of the cathode ray tube (B) fixed to the upper plate (2) is located and the pulley (15) is inserted and fixed to the lower outer peripheral surface of the drum (1) One end of the drum 1 is rotatably inserted into the drum support 23 having the groove 25 formed therein.

An inclined plate 3 having a funnel shape is formed on the inner circumferential surface of the upper part of the drum 1, which is sprayed onto the face glass by the application means 7 and the remaining chemical is discharged from the drum 1. It performs the function of flowing smoothly to the bottom.

The pulley 15 inserted and fixed to the lower portion of the drum 1 is connected to the pulley 13 attached to the drive motor 11 and the belt 17 to thereby transmit the rotational force of the drive motor 11 to the drum ( 1), the upper plate (2) and the cathode ray tube (B) coupled to the upper portion of the drum (1) also rotates with the drum (1).

The coating means 7 located in the inner space of the drum 1 is located in the lower space of the drum 1 and the pipe 10 connected to the hose for delivering the chemical liquid and the upper portion of the drum 1 It is composed of a plurality of nozzles (8) for spraying the chemical solution provided to the pipe 10 and sprayed to the face glass of the cathode ray tube (B) and the injection unit (9) on which the nozzles (8) are mounted.

The remaining chemical liquid sprayed from the application means 7 and applied to the face glass flows to the bottom through the inclined plate 3 of the drum 1, and is collected in the groove 25 of the drum support 23. Thus, the groove 25 The chemical liquid gathered in) flows outward from the groove 25.

Therefore, the discharge pipe 19 for preventing the outflow of the chemical liquid and discharged to the outside to be used again is connected to the groove 25 of the drum support 23 is mounted on the bottom of the base 20.

On the other hand, the drum support 23 supporting the drum 1 is fixed to the upper surface of the base 20, and the motor fixing part 21 to which the drive motor 11 is fixed is fixed to the upper surface of the base 20. Is combined.

In addition, the front end of the base 20 is equipped with a plurality of moving means 50 consisting of a wheel 53 and the base fixing member 51, the wheel 53 is easy to move the base 20 The base fixing member 51 serves to fix the base 20 back to the ground after the movement.

Since the chemical liquid injected from the application means 7 is alcoholic, it evaporates to form a vapor pressure inside the drum 1, which prevents the chemical liquid from being applied to the face glass of the cathode ray tube B. So you have to solve this.

Therefore, an exhaust means 30 is provided on one side of the support, and the exhaust means 30 is composed of an exhaust pipe 31 and a fan in which the exhaust pipe is mounted.

When the drum 1 is rotated by the rotational force supplied from the driving motor 11, since only the lower part thereof is supported, vibration occurs in the left and right directions at the upper part. It not only damages the application means 7 and the drive motor 11, but also causes a defect in the formation of a coating film on the face glass of the cathode ray tube B.

Therefore, the sliding member 41 which is in contact with the rotating drum 1, the housing 43 which prevents the sliding member 41 from being separated, and the joint member which fixes this housing 43 are located in the center part of the drum 1 (45) (47), the joint member 45, 47 is fixed to the base 20, the vertical joint member 47 and the housing 43 and the vertical joint member (vertically erected vertically) 47 is composed of a horizontal joint member 45 for connecting.

In the multilayer coating apparatus (G) configured as described above, a part of the panel of the cathode ray tube (B) is hermetically inserted and fixed to the outside by using a sealing part and a fixing means in a hole formed in the center of the upper plate (2). When the power source is connected to the motor 11, the drive motor 11 is rotated.

The belt 17 connecting the pulley 13 attached to the drive motor 11 and the pulley 15 inserted into the lower outer circumferential surface of the drum 2 receives the rotational force of the drive motor 11. To 1).

Therefore, the upper plate (2) connected by the upper screw (4) of the drum (1) and the cathode ray tube (B) fixed to the upper plate (2) is rotated integrally with the drum (1), wherein the drum The chemical | medical solution is delivered from the hose connected to the piping 10 which comprises this application means 7 in the application means 7 located inside (1).

This chemical liquid is guided by the pipe 10 described above and provided to the injection section 9 and the plurality of nozzles 8 mounted, which nozzle 8 rotates like a drum 1 with a cathode ray tube B. The chemical liquid is sprayed into the face glass of to form a multilayer film.

Since the chemical liquid contains an alcohol component, it is sprayed and vaporized by the nozzle 8, and the vaporized chemical liquid exerts a pressure to the drum 1 to prevent the formation of a coating film.

At this time, the steam pressure is discharged to the outside by the ventilation action of the exhaust pipe 31 and the fan of the exhaust means 30 installed in the drum support 23, the drum 1 is supported, the pressure in the drum 1 is adjusted do.

Meanwhile, the chemical liquid that is not applied or flowed down to the face glass of the cathode ray tube B is transferred to the lower portion of the drum 1 by the inclined plate 3, and the chemical liquid flows down to the lower portion of the drum 1. Is discharged to the outside through the discharge pipe 19 connected to the groove 25 formed in the drum support 23.

And while the drum 1 is rotated at a high speed, only the lower portion of the drum 1 is inserted into the groove 25 of the drum support 23 so that the upper part is vibrated to shake left and right. As a result, not only the drum 1 but also the application means 7 or the driving motor 11 are damaged.

In order to prevent this, the vibration suppressing means 40 provided at the center of the drum is in contact with the sliding member 41 without affecting the rotation of the drum 1, the housing 43 for supporting the sliding member 41 The horizontal member 45 connected to the vertical portion 47 fixed to the base 20 is connected to each other to minimize the vibration generated in the drum (1).

As described above, in the multilayer coating apparatus according to the present invention, the drum and the top plate are sealed and rotated integrally, thereby preventing the generation of vortices due to the movement of airflow inside the drum.

Therefore, the formation of the coating film of the face glass of the cathode ray tube is uniform, so that the dispersion of quality is minimized. Since the outflow of the chemical liquid is blocked by the gap between the drum and the top plate, the chemical liquid can reduce the amount of use, thereby reducing the production cost.

Claims (6)

An upper plate (2) provided with a fixing part and a sealing part such that the cathode ray tube B is fixed in close contact with the cathode ray tube B; A drum (1) coupled to the bottom of the upper plate (2) without a gap, and having a pulley (15) attached to the lower portion and having a space therein; A drive motor 11 connected to the pulley 15 formed on the lower outer circumferential surface of the drum 1 and transmitting a rotational force to the drum 1; An application means (7) positioned in the inner space of the drum (1), for injecting the chemical liquid into the face glass of the cathode ray tube (B); A drum support 23 supporting the bottom of the drum 1; A base 20 to which the drum support 23 and the driving motor 11 are fixed; Multi-layer coating device comprising a. The multilayer film coating apparatus according to claim 1, wherein the bottom of the top plate (2) and the top of the drum (1) are fastened with screws (4). The vibration suppressing means (40) of claim 1, wherein the drum (1) comprises a sliding member (41), a housing (43), and a coupling member (45) (47) in order to suppress vibrations caused by rotation. Multilayer film coating apparatus characterized in that the mounting. The exhaust means according to claim 1, wherein one side of the drum support part 23 comprises an exhaust port 31 and a fan for controlling the vapor pressure by evacuating the gas of the alcohol component vaporized by the coating means 7. Multilayer film coating apparatus, characterized in that the 30 is mounted. The multilayer film coating apparatus according to claim 1, wherein the drum support part (23) is equipped with a discharge pipe (19) for discharging the chemical liquid introduced into the groove (25) formed in the drum support part (23) to the outside. The method of claim 1, wherein the distal end of the base 20, the moving means 50 consisting of a wheel 53 and the base support member 51 to fix or move the base 20 to the ground is Multilayer film coating apparatus characterized in that the mounting.