KR100804768B1 - Fluorescent printing nozzle cleaning system - Google Patents

Abstract

An apparatus for cleaning a fluorescent material printing nozzle is provided to maintain a clean state of a fluorescent material printing nozzle by uniformly and finely cleaning the fluorescent material printing nozzle. An apparatus for cleaning a fluorescent material printing nozzle includes an ultrasonic cleaner(150) and high pressure cleaning/drying portions(170). The high pressure cleaning/drying portion is reciprocally moved along a length direction of the nozzle by the ultrasonic cleaner. The high pressure cleaning/drying portion sprays cleaning air and cleaning liquid at a high pressure toward a nozzle end of the fluorescent material printing nozzle. The high pressure cleaning/drying portion performs cleaning and drying processes at the same time by using a cleaning/drying transfer unit.

Description

Fluorescent printing nozzle cleaning system

1 is a block diagram of a phosphor printing nozzle cleaning apparatus according to an embodiment of the present invention,

2 is a pipe diagram of FIG. 1;

3a and 3b is a configuration of the ultrasonic cleaner according to an embodiment of the present invention,

4 is a perspective view of a partial region of FIGS. 3A and 3B;

5 is a block diagram of a high-pressure cleaning drying unit according to an embodiment of the present invention,

6 is a perspective view of the cleaning and drying transfer unit according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100: phosphor printing nozzle cleaning device 110: phosphor printing nozzle

120: cleaning liquid tank 130: delivery unit

131: transport jig 140: atmospheric portion

150: ultrasonic washing machine 160: the first ultrasonic washing machine

161: 1st cleaning casing 162: 1st government cover

163: first ultrasonic generator 164: first bubble spray nozzle

165: first overflow article 166: first overflow piping

170: high pressure cleaning drying unit 180: cleaning drying casing

181: injection nozzle 190: cleaning dry transfer unit

191: support guide 192: sliding feed unit

193: high pressure jet nozzle 193a: transfer jet nozzle

193b: clean air supply part 193c: cleaning liquid supply part

194: drying section

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phosphor printing nozzle cleaning apparatus, and more particularly, to a phosphor printing nozzle cleaning apparatus having an improved structure for cleaning a phosphor printing nozzle.

In general, phosphors for realizing color screens through three primary colors of red, green, and blue light are used as display materials, such as TVs, computers, and monitors.

There are various kinds of phosphors, including photoluminescence, electroluminescence, cathodoluminescence, and the like, and new phosphors are being developed to develop display devices with high brightness and high efficiency.

The phosphor is printed on the display device through the printing nozzle. If the phosphor is not printed for a predetermined time after printing the phosphor, part of the phosphor remaining in the printing nozzle is solidified and denatured, thereby clogging the printing nozzle. Therefore, the phosphor printing nozzle is cleaned by ethanol which is separated from the printing apparatus by the operator and sprayed into the high pressure cleaning nozzle.

However, the conventional cleaning method of the phosphor printing nozzle takes a long time to clean the fine phosphor remaining in the printing nozzle and there is a problem that a small amount of phosphor may remain in the printing nozzle even after the cleaning operation is finished.

In addition, there is a problem that the worker may be exposed to safety accidents because the worker directly handles drugs such as ethanol.

Therefore, an object of the present invention is to clean the phosphor printing nozzle in a short time precisely and uniformly so that the clean state of the phosphor printing nozzle is continuously maintained, thereby improving the production quality of the phosphor printing nozzle. It is to provide a cleaning device.

Further, another object of the present invention is to provide a phosphor printing nozzle cleaning apparatus capable of preventing an operator from being exposed to a safety accident by automating the cleaning operation.

According to the present invention, there is provided a phosphor printing nozzle cleaning apparatus for cleaning a phosphor printing nozzle, the apparatus comprising: at least one ultrasonic cleaner; It reciprocates along the longitudinal direction of the nozzle with respect to the phosphor printing nozzle cleaned by the ultrasonic cleaner, and clean air and cleaning liquid is sprayed at a high pressure toward the nozzle end of the phosphor printing nozzle to clean and dry at the same time. It is achieved by a phosphor printing nozzle cleaning apparatus, characterized in that it comprises a high-pressure cleaning drying unit having a cleaning drying transfer unit for performing the.

Here, the ultrasonic cleaner includes a cleaning casing in which a cleaning liquid is received and an opening is formed in the upper portion, an ultrasonic generator provided in the lower portion of the cleaning casing and immersed in the cleaning liquid, and spraying bubbles in the cleaning casing. It is preferable to include a foam spray nozzle.

The ultrasonic cleaner further includes a cleaning part cover provided at an upper portion of the cleaning casing to open and close the opening of the cleaning casing, and an overflow tank provided at an outer side of the cleaning casing to collect the cleaning liquid overflowed from the cleaning casing. It is preferable to include.

The ultrasonic cleaner is provided between the cleaning part cover provided on the cleaning casing to open and close the opening of the cleaning casing, the periphery of the opening of the cleaning casing, and provided between the outer side of the cleaning casing and the cleaning part cover. An overflow tank for collecting the cleaning liquid overflowed from the cleaning casing may be further included.

The cleaning and drying transfer unit may include a support guide extending along a length direction of the phosphor printing nozzle, a sliding conveyance unit slidably coupled to the support guide, and coupled to one side of the sliding transfer unit to clean air and a cleaning liquid. A high pressure spray nozzle unit which is mixed and sprayed at high pressure toward the phosphor printing nozzle, and a drying unit which is coupled to the other side of the sliding transport unit and reciprocated with the high pressure spray nozzle unit to dry the phosphor printed nozzle cleaned at high pressure It is desirable to.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The phosphor printing nozzle cleaning apparatus 100 according to the present invention, as shown in Figure 1, the cleaning liquid tank 120, the conveying unit 130, the atmospheric portion 140, the ultrasonic cleaner 150 and , High pressure cleaning and drying unit (170).

The cleaning liquid tank 120 is provided in a predetermined space in the phosphor printing nozzle cleaning apparatus 100 to store a cleaning liquid such as ethanol or ozone water, and supplies the cleaning liquid to the ultrasonic cleaner 150 and the high pressure cleaning dryer 170.

As shown in FIG. 1, the transport unit 130 is transported so that the phosphor printing nozzle 110 is transported from the standby unit 140 to the high-pressure washing and drying unit 170 ('X' direction and ' The reverse direction of X ') is preferably provided over the entire path of the phosphor printing nozzle cleaning apparatus 100, and is coupled to the conveying unit 130, the carrier jig for loading the phosphor printing nozzle 110 (zig) ( 131).

The waiting unit 140 is provided in a predetermined other space of the phosphor printing nozzle cleaning apparatus 100 so that the phosphor printing nozzle 110 loaded on the transport jig 131 may be prepared before the cleaning operation starts. In the standby unit 140, the phosphor printing nozzle 110 that has been finally cleaned and dried may be carried out.

As illustrated in FIG. 1, the ultrasonic cleaner 150 includes a first ultrasonic cleaner 160 and a second ultrasonic cleaner 160a that is sequentially provided in the first ultrasonic cleaner 160. As an embodiment of the present invention, the ultrasonic cleaner 150 is described as including the first ultrasonic cleaner 160 and the second ultrasonic cleaner 160a, but as another embodiment of the present invention, the ultrasonic cleaner 150 may include a third ultrasonic cleaner and a fourth ultrasonic cleaner or more ultrasonic cleaners. In addition, as another embodiment of the present invention, the ultrasonic cleaner 150 may be provided only by the first ultrasonic cleaner 160.

Accordingly, the size of the phosphor printing nozzle cleaning apparatus 100 may be variously changed by providing the number of ultrasonic cleaners 150 in accordance with the degree of cleaning.

As shown in FIGS. 1 and 2, the first ultrasonic cleaner 160 is provided at a position spaced maximum from the standby unit 140 of the phosphor printing nozzle cleaning apparatus 100, and the second ultrasonic cleaner 160a. ) To perform the initial cleaning operation to remove the phosphor of the particles relatively large compared to the phosphor removed in the), as shown in Figures 2 and 3a, the first cleaning casing 161 and the first cleaning cover 162 ), A first ultrasonic wave generator 163, a first bubble spray nozzle 164, a first overflow tank 165, and a first overflow pipe 166.

The first cleaning casing 161 is preferably a cleaning liquid supplied from the cleaning liquid tank 120, the opening is formed in the upper portion.

As shown in FIGS. 3A and 4, the first washing cover 162 is provided on an upper portion of the first washing casing 161 to open and close an opening formed at an upper portion of the first washing casing 161.

That is, when the phosphor printing nozzle 110 loaded on the transport jig 131 is transported by the transport unit 130 and seated on the first ultrasonic cleaner 160, the first cleaner cover 162 is closed to close the first cleaner cover 162. The cleaning casing 161 is sealed from the outside.

Accordingly, the phosphor printing nozzle 110 inside the first cleaning casing 161 is cleaned by the cleaning liquid, the first ultrasonic wave generator 163 and the first foam spray nozzle 164 by the cleaning liquid, and ultrasonic cavitation. It is possible to prevent the cleaning liquid from scattering to the outside of the first cleaning casing 161 when the cleaning is performed by cavitation and the bubble is cleaned.

As shown in FIG. 3A, the first ultrasonic generator 163 may be provided below the first cleaning casing 161 and immersed in a cleaning liquid. Accordingly, when the ultrasonic wave generated by the first ultrasonic generator 163 propagates in the cleaning liquid, the medium on the ultrasonic path is partially heated, and small bubbles are generated in the cleaning liquid. The phosphor time of the phosphor printing nozzle 110 can be effectively decomposed.

The first foam spray nozzle 164 is provided inside the first cleaning casing 161 to spray bubbles. In one embodiment of the present invention, the first foam spray nozzle 164 is preferably provided to spray the cleaning liquid bubbles from the lower portion of the inside of the first cleaning casing 161 toward the upper portion where the phosphor printing nozzle 110 is disposed. .

Accordingly, bubble cleaning is added to the phosphor decomposition cleaning by the cleaning liquid and the cleaning by the ultrasonic cavitation, thereby greatly improving the cleaning effect of the phosphor printing nozzle 110.

As shown in FIG. 2 and FIG. 3A, the first overflow tank 165 is provided on the outer side of the first cleaning casing 161 to collect the washing liquid overflowed from the first cleaning casing 161. Accordingly, it is possible to minimize the amount of the washing liquid overflowed from the first cleaning casing 161 is discarded.

As illustrated in FIG. 2, the first overflow pipe 166 includes a first overflow tank 165 such that the cleaning liquid collected in the first overflow tank 165 flows back into the first bubble spray nozzle 164. And a first bubble spray nozzle 164 are provided. Accordingly, it is possible to minimize the consumption of the cleaning liquid by minimizing waste of the cleaning liquid.

The second ultrasonic cleaner 160a performs a secondary cleaning operation to remove phosphors of particles relatively smaller than the phosphors removed from the first ultrasonic cleaner 160, as shown in FIGS. 2 and 3b. Likewise, the first ultrasonic cleaner 160 is preferably provided to have the same configuration. Accordingly, the cleaning effect of the phosphor printing nozzle 110 can be greatly improved by cleaning the phosphor printing nozzle 110 with a cleaning liquid cleaner than the first ultrasonic cleaner 160.

As shown in FIG. 1, the high pressure washing and drying unit 170 is sequentially provided in the ultrasonic cleaner 150, and as shown in FIG. 5, the cleaning drying casing 180 and the cleaning drying transfer unit ( 190).

As shown in FIG. 5, the cleaning drying casing 180 is provided at a lower portion of the cleaning drying transfer unit 190, and an opening is formed at an upper portion thereof, and the clean air and the cleaning liquid are directed toward the phosphor printing nozzle 110 from different directions. It is preferable to include a plurality of injection nozzles 181 provided inside the cleaning and drying casing 180 so as to spray at least one of them. Accordingly, the phosphor printing nozzle 110 cleaned through the ultrasonic cleaner 150 by the plurality of injection nozzles 181 may be cleaned more cleanly.

As shown in FIG. 6, the cleaning and drying transfer unit 190 reciprocates the phosphor printing nozzle 110 cleaned by the ultrasonic cleaner 150 along the longitudinal direction of the nozzle ('Z' direction of FIG. 6). And the reverse direction of 'Z') Clean air and washing liquid are sprayed at a high pressure to perform the washing and drying, and the support guide 191, the sliding conveying part 192, the high pressure spray nozzle part 193, and the drying are carried out. Section 194.

As shown in FIG. 6, the support guide 191 is disposed in an area adjacent to the cleaning and drying casing 180 and extends in the longitudinal direction of the phosphor printing nozzle 110.

The sliding transfer unit 192 is preferably slidably coupled to the support guide 191. Accordingly, the high pressure spray nozzle unit 193 and the drying unit 194 are coupled to the sliding transfer unit 192, and the sliding transfer unit 192 is slidably coupled to the support guide 191 so that the high pressure spray nozzle unit 193 and The drying unit 194 may be reciprocated along the length direction of the phosphor printing nozzle 110.

As shown in FIG. 6, the high pressure injection nozzle unit 193 is coupled to one side of the sliding transfer unit 192 and mixes clean air and a cleaning liquid to spray the high pressure toward the phosphor printing nozzle 110, and at least one The transfer spray nozzle 193a, a clean air supply unit 193b connected to the transfer injection nozzle 193a, and a cleaning liquid supply unit 193c connected to the transfer injection nozzle 193a together with the clean air supply unit 193b. Accordingly, even the first ultrasonic cleaner 160 and the second ultrasonic cleaner 160a can be completely removed even the fluorescent particles of the fine particles that can not be identified by the naked eye remaining in the printing nozzle 110 without being cleaned. have.

As an embodiment of the present invention, the transfer injection nozzle 193a and the injection nozzle 181, as shown in Figure 5, when the phosphor printing nozzle 110 is seated in the high-pressure cleaning drying unit 170, the phosphor printing Preferably, the spraying direction is concentrated toward the discharge part of the nozzle 110.

As shown in FIG. 6, the drying unit 194 is coupled to the other side of the sliding transfer unit 192 to reciprocate with the high pressure injection nozzle unit 193 to dry the phosphor printing nozzle 110 cleaned at high pressure. . As an embodiment of the present invention, the drying unit 194 preferably includes a slit type drying nozzle.

Accordingly, the high pressure injection nozzle unit 193 and the drying unit 194 reciprocate along the longitudinal direction of the phosphor printing nozzle 110 and simultaneously perform cleaning and drying, thereby miniaturizing the size of the cleaning device, The operation cost can be reduced, and the cleaning effect of the phosphor printing nozzle 110 can be significantly improved.

As one embodiment of the present invention, the phosphor printing nozzle cleaning apparatus 100 preferably further includes a sensor and a control unit so that the transport, cleaning and drying operations are automatically performed over the entire path.

Accordingly, the cleaning operation can be automated to prevent the worker from being exposed to a safety accident.

By such a configuration, a process of operating the phosphor printing nozzle cleaning apparatus 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6.

First, when the phosphor printing nozzle 110 is loaded on the transport jig 131 in the standby unit 140, the transport unit 130 moves the transport jig 131 loaded with the phosphor printing nozzle 110 into the first ultrasonic cleaner. Carry it to 160.

Next, when the carrier paper 131 loaded with the phosphor printing nozzle 110 arrives at the first ultrasonic cleaner 160, the phosphor printing nozzle 110 is immersed in the cleaning liquid contained in the first cleaning casing 161. The first cleaning cover 162 is closed to seal the first cleaning casing 161 from the outside.

The first ultrasonic generator 163 and the first bubble spray nozzle 164 are operated to perform an initial cleaning operation of the phosphor printing nozzle 110 immersed in the cleaning liquid, and the initial cleaning operation is performed in the first ultrasonic cleaner 160. Upon completion, the transport jig 131 is transported to the second ultrasonic cleaner 160a by the transport unit 130 so that the cleaned phosphor printing nozzle 110 is transferred to the second ultrasonic cleaner 160a.

When the carrier jig 131 loaded with the phosphor printing nozzle 110 arrives at the second ultrasonic cleaner 160a, the phosphor printing nozzle 110 is immersed in the cleaning liquid contained in the second cleaning casing 161a, and the second The cleaning part cover 162a is closed to seal the second cleaning casing 161a from the outside.

The second ultrasonic generator 163a and the second bubble spray nozzle 164a are operated to perform the second cleaning operation of the phosphor printing nozzle 110 immersed in the cleaning liquid, and the second ultrasonic cleaning unit 160a performs the second cleaning. When the operation is completed, the transporting jig 131 is transported to the high pressure cleaning and drying unit 170 by the transport unit 130 so that the cleaned phosphor printing nozzle 110 is transferred to the high pressure cleaning and drying unit 170.

When the transport jig 131 loaded with the phosphor printing nozzle 110 arrives at the high pressure cleaning and drying unit 170, the spray nozzle 181 and the cleaning dry transfer unit 190 are operated to print the phosphor with the spray nozzle 181. The nozzle 110 is cleaned with a high pressure cleaning liquid, and the high pressure injection nozzle unit 193 and the drying unit 194 reciprocate along the longitudinal direction of the phosphor printing nozzle 110 to simultaneously perform cleaning and drying.

When the cleaning and drying operation of the phosphor printing nozzle 110 in the high-pressure cleaning drying unit 170 is completed, the transport jig 131 by the transport unit 130 so that the phosphor printing nozzle 110 is transferred to the standby unit 140 again. ) Is transferred to the standby unit 140.

Thus, according to the present invention, the cleaning operation can be automated to prevent workers from being exposed to safety accidents, and the cleaning state of the phosphor printing nozzle 110 is continuously maintained by precisely and uniformly cleaning the phosphor printing nozzle 110. Can be maintained.

As described above, according to the present invention, by cleaning the phosphor printing nozzle precisely and uniformly, the clean state of the phosphor printing nozzle can be maintained continuously, thereby improving the production quality of the display apparatus on which the phosphor is printed.

In addition, by automating the cleaning operation can prevent workers from being exposed to safety accidents.

Furthermore, since the washing and drying are performed at the same time, the size of the washing apparatus can be reduced, and the working time and the working cost can be reduced.

Claims (5)

In the phosphor printing nozzle cleaning apparatus for cleaning the phosphor printing nozzle, At least one ultrasonic cleaner; It reciprocates along the longitudinal direction of the nozzle with respect to the phosphor printing nozzle cleaned by the ultrasonic cleaner, and clean air and cleaning liquid is sprayed at a high pressure toward the nozzle end of the phosphor printing nozzle to clean and dry at the same time. And a high pressure cleaning and drying unit having a cleaning and drying unit for cleaning. The method of claim 1, The ultrasonic cleaner, A cleaning casing in which a cleaning liquid is received and an opening is formed in an upper portion thereof; An ultrasonic generator provided under the cleaning casing and immersed in a cleaning liquid; And a foam spray nozzle provided inside the cleaning casing to spray bubbles. The method of claim 2, The ultrasonic cleaner, A cleaning part cover provided at an upper portion of the cleaning casing to open and close the opening of the cleaning casing; And an overflow tank which forms a periphery of the opening of the cleaning casing and is provided between the outer side of the cleaning casing and the cleaning cover to collect the cleaning liquid overflowed from the cleaning casing. Cleaning device. The method of claim 3, And the ultrasonic cleaner further comprises an overflow pipe provided between the overflow tank and the bubble spray nozzle so that the cleaning liquid collected in the overflow tank is re-introduced into the bubble spray nozzle. The method according to any one of claims 1 to 4, The dry cleaning transfer unit, A support guide extending along the longitudinal direction of the phosphor printing nozzle; A sliding conveyance unit slidably coupled to the support guide; A high pressure spray nozzle unit which is coupled to one side of the sliding transfer unit and mixes clean air with a cleaning liquid and sprays the high pressure toward the phosphor printing nozzle; And a drying unit coupled to the other side of the sliding transfer unit to dry the phosphor printing nozzle reciprocated with the high pressure injection nozzle unit and cleaned at high pressure.

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