JPH03176938A - Panel pin cleaning device for cathode-ray tube - Google Patents

Abstract

PURPOSE:To uniformly clean multiple panel pins by providing a nozzle and a panel guide having an exciting means to the panel inner face and a moving means and integrally moved oppositely to the panel pins. CONSTITUTION:When a panel 1 is fixed, a frame 4 is lifted, and a nozzle 2 and a panel guide 3 are located on the inside of the panel 1. The guide 3 is moved by a driving cylinder 12 via a spring 11 and pressed to the inside of the panel 1. Since the nozzle 2 is integrally moved with the guide 3, it is kept at the preset distance from panel pins 1a when the guide 3 is pressed to the inner face of the panel 1, i.e., the nozzle 2 is positioned with the inner face of the panel 1 serving as a reference. Even if the panel 1 is displaced, distances of the nozzle 2 from the panel pins 1a are the same, and the multiple pins 1a are cleaned under the same conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning device for cleaning a plurality of panel pins provided on the inner surface of a cathode ray tube panel.

[Conventional technology]

Blackma in the manufacturing process of color cathode ray tubes) I
Formation of lead film for chartered ships for JTSX is made by dripping graphite liquid onto the inner surface of the panel and then rotating the panel at high speed.

Therefore, graphite is applied to the entire inner surface of the panel and also adheres to the panel pins. Since the panel pins are made of metal, they must be cleaned with water before the graphite dries.

2. Description of the Related Art Conventionally, as a cleaning device for thoroughly cleaning a panel by jetting water from a nozzle, for example, one disclosed in Japanese Patent Application Laid-open No. 80442/1980 is known. That is, the rotating brush and nozzle are moved toward the inner surface of the panel, the rotating brush is brought into contact with the panel pin, and the panel pin is brushed by the rotation of the rotating brush, and the nozzle is positioned a predetermined distance in front of the panel pin. Clean by spraying with water. In this case, the rotating brush and nozzle are positioned with respect to the panel pin by bringing a stopper into contact with a fixed portion of the device.

In addition, although the above-mentioned prior art uses a rotating brush and a nozzle in combination, if the graphite is cleaned before it dries, the nozzle alone is sufficient.

[Problem to be solved by the invention]

In the above conventional technology, the positioning of the nozzle with respect to the panel pin is performed by bringing the stopper into contact with the identification part, so if the positioning of the panel is misaligned with respect to the device, the nozzle may approach the panel pin or move away from it. Something happens. For this reason, there were times when a plurality of panel pins were not cleaned uniformly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cathode ray tube panel pin cleaning device that can uniformly clean all of a plurality of panel pins.

[Means to solve the problem]

The above purpose is to provide a plurality of nozzles facing each panel pin, each of which is provided near each nozzle so as to be movable integrally with the nozzle, and which is arranged a predetermined distance closer to the inner surface of the panel than the nozzle. According to the structure, the panel guide is provided with a panel guide, a biasing means for biasing the panel guide so as to come into pressure contact with the inner surface of the panel, and a drive means for moving the nozzle and the panel guide toward the inner surface of the panel via the biasing means. Be achieved.

[Effect]

The panel guide is moved by the driving means via the urging means, and is pressed against the inner surface of the panel by the urging force of the urging means. In this case, since the nozzle moves integrally with the panel guide, when the panel guide comes into pressure contact with the inner surface of the panel, the nozzle is separated from the panel pin by a predetermined distance. That is, since the nozzles are positioned with reference to the inner surface of the panel, the distance of each nozzle to the panel pin is the same even if the panel is in position IW. Therefore, a plurality of panel pins are cleaned under the same conditions, and all of them are cleaned uniformly.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In this embodiment, two panels 1 (IA, I
B) shows a cleaning device that can be used in common with 18-inch and 21-inch panels. Therefore, two nozzles 2 are provided on each of the short sides of the panel 1, and one nozzle 2 is provided on each of the long sides of the panel 1 for spraying cleaning water onto the panel pin A planted in the panel 1.

Further, a panel guide 3 is disposed near the nozzle 2 so as to be closer to the inner surface of the panel than the nozzle 2. here,
The positional relationship between the nozzle 2 and the panel guide 3 in the inner surface direction of the panel 1 is such that when the panel guide 3 comes into contact with the inner surface of the panel 1, the nozzle 2 is in the normal cleaning position.

The nozzle 2 is fixed to a nozzle support vibe 5 that is inserted through a frame-shaped main body 4 surrounding the panel 1 and extends outward, and the nozzle support pipe 5 is further fixed to a holding block 6. The panel guide 3 is similarly fixed to a guide support rod 7 which is inserted through the main body 4 and extends outward, and the guide support rod 7 is slidably provided on a bearing 8 fixed to the main body 4. An operating lever 9 is fixed to the end of the guide support rod 7, and the support block 6 is fixed to the operating lever 9 via a connecting plate 0. Therefore, when the actuation lever 9 is actuated, the nozzle 2 and the panel guide 35- always maintain a fixed positional relationship and move as one.

Further, a spring 11 is disposed between the bearing 8 and the operating lever 9, and the panel guide 3 is biased toward the inner surface of the panel 1 by this spring 11. Further, a driving cylinder 12 is fixed to the main body 4, and the driving cylinder 1
A piece 13 having a hook portion 13a is fixed to the second actuating rod. The operating lever 9 is slidably inserted into the piece 13.

Next, the operation will be explained. The panel 1 is held and transported by a carrier head (not shown), and is positioned and fixed above the frame 4. At this time, the graphite is in a wet state. Next, the main body 4 is raised by a vertical drive means (not shown), and the nozzle 2 and panel guide 3 are positioned inside the panel 1.

Then, water is spouted from the nozzle 2. In this state, the panel guide 3 is placed at a distance of approximately 1011 which does not interfere with the panel 1 and does not allow water from the nozzle 2 to reach the panel 1.
1 panel 1 away. Therefore, it is possible to prevent water springing caused by the disturbance of the leaves, which is likely to occur at the beginning of water jetting from the nozzle 2.

Next, the driving cylinder 12 is actuated to move the piece 13 to the position of the two-point parallel line. As a result, the actuating lever 9 moves following the piece 13 by the force of the spring 11, and when the panel guide 3 comes into contact with the inner surface of the panel 1, it becomes a two-point button line state. In this case, the driving cylinder 12 is operated so that a gap a is created between the collar portion 13a of the piece J3 and the making I lever 9.

Since the nozzle 2 moves integrally with the panel kite 3 like a shuttle, the nozzle 2 is positioned at a fixed cleaning position i with respect to the panel pin A without spouting water. Thereupon, the panel pin 1a is sprayed out from the nozzle 2 and a) is washed with a constant amount of fresh water. After washing for about 4 seconds, the driving cylinder 12 is closed and the nozzle 2 and panel guide 3 are moved in a direction away from the panel 1 while keeping the water flowing. Then, while stopping the water jetting from the nozzle 2, the main body 4 is lowered, and the station transports the panel 1 to the next process. This completes the series of cleaning steps for the panel pins 1a.

In this way, the panel guide 3 is moved by the driving cylinder 12 via the spring 1, and is pressed against the inner surface of the panel 1 by the biasing force of the spring 11. In this case, the nozzle 2 moves integrally with the panel guide 3, so
When the panel guide 3 comes into pressure contact with the inner surface of the panel 1, the nozzle 2 is separated from the panel pin 1a by a predetermined distance. That is,
Since the nozzles 2 are positioned based on the inner surface of the panel 1, the distance of each nozzle 2 from the panel pin 1a is the same even if the panels 1 are misaligned. Therefore, the first few panel pins 1a are cleaned under the same conditions, and are all cleaned uniformly.

In addition, although the above-mentioned embodiment shows a type in which two large and small panels 1 are used, the position i of the panel pins 1a may be different. In such a case, increase the number of nozzles 2 or
This can be easily handled by using a wide nozzle. In addition, differences in the position of the nozzle 2 in the height direction with respect to the panel 1 can be handled by adjusting the vertical movement lid of the carrier head that holds the panel 1, or by moving the main body 4 up and down using a multistage cylinder, ball screw, cam, etc. can.

〔Effect of the invention〕

According to the present invention, since cleaning is performed by positioning the nozzle relative to the panel pins using the inner surface of the panel as a reference, all of the plurality of panel pins can be uniformly cleaned.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, with FIG. 1 being a plan view and FIG. 2 being a side view. 1...Panel, 1a...Panel pin, 2...
・Nozzle, 3... Panel guide, 5... Nozzle support pipe, 7... Guide support rod, 9...
Operating lever 1] Spring, 12 Drive cylinder. 9-

Claims (1)

[Claims] 1. In a cleaning device that cleans a plurality of panel pins provided on the inner surface of a cathode ray tube panel, a plurality of nozzles are provided facing each panel pin and can be moved in the vicinity of each nozzle integrally with the nozzle. a panel guide disposed at a predetermined distance closer to the inner surface of the panel than the nozzle; a biasing means for biasing the panel guide so as to come into pressure contact with the panel interior; and a biasing means for biasing the nozzle and the panel guide. A device for cleaning a panel pin of a cathode ray tube, comprising a drive means for moving the pin toward the inner surface of the panel via the means.