MXPA97005731A - Washing device of a panel for catodi ray tube - Google Patents

Abstract

A washing device for a cathode ray tube is provided. The panel washing device includes a carrier for transferring the panel, a tank installed below the panel, a mesh or mesh plate element installed inside the tank, an elastic element, installed between the inner bottom surface of the tank and the tank element. meshed plate, to elastically deflect the meshed plate element in an upward direction, and a forklift or elevator to raise the tank. Accordingly, the inner and outer surfaces and the sealing end of a panel skirt can be effectively washed.

Description

WASHING DEVICE OF A PANEL FOR CATHODE RAYS TUBE FIELD OF THE INVENTION The present invention relates to a device for washing a panel for a cathode ray tube (CRT) f and more particularly, to a device for washing a panel for a cathode ray tube for washing foreign substances attached or attached to a skirt of the panel.

BACKGROUND OF THE INVENTION Generally, a cathode ray tube includes a panel 10 having a fluorescent film formed therein, a shade mask frame assembly 12 installed at a predetermined distance from the panel 10, a funnel or mouthpiece 14 sealed and coupled to the panel 10. , an electric or electron gun 16 installed in the neck portion 14a of the funnel or mouthpiece 14, and a deflection yoke 18 installed around the conical portion 14b of the funnel or embouchure 14. Among the methods of manufacturing the REF: 25234 panel, there is a process to remove foreign substances attached or glued to the internal and external surfaces and the end or edge of the skirt of the panel to be sealed, prior to the formation of the fluorescent and reflection films inside the panel and attach the panel to the funnel. Since the coating of lacquer on the inner surface and the sealed end of the skirt in the process of forming the fluorescent film of the panel serves as a foreign substance in the formation of the reflection film or coupling of the panel to the funnel, the panel should be washed completely continuously. Figure 2 shows an example of a conventional washing device for washing the skirt of the panel. The panel washing device comprises a carrier or support 21 for transferring and rotating the panel 10 in a state in which each side of the panel 1 or is supported and the skirt 10a of the panel faces downwardly, a support element 22 installed below the carrier or support 21, a cloth or structure 23 soaked with acetone on the surface of the support element 22, a bracket or pedestal 24 for supporting the support element 22, and a cylinder 25 for lifting the support element 22. In the device of washing the conventional panel having the structure as described above, when the panel 10 is transferred by the carrier or support 21 to an upper portion of the support element 22, the cylinder 25 lifts the support element 22, so that the The sealed end of the skirt 10a makes contact with the fabric or structure 23 attached or attached to the support element 22. In this state, the panel 10 is coated by the rotation of the carrier 21 to provide the A frictional or frictional contact between the fabric or structure 23 and the sealed end of the skirt 10a, whereby the panel is cleaned. However, the conventional panel washing device has the following problems. First, since the structure or fabric comes into contact with the sealing end of the skirt, the inner and outer surfaces of the skirt can not be washed. Therefore, the finished or finished panel is inferior due to the presence of foreign substances in the process of forming the reflection film. Second, a beveled portion formed in the sealing end of the skirt can not be completely washed, so it causes the lower coupling due to the presence of foreign substances in the beveled or chamfered portion. Third, the cleaning solution of the cloth or structure splashes inside the panel, thus "the fluorescent film formed inside the panel becomes contaminated.

BRIEF DESCRIPTION OF THE INVENTION It is an object of the present invention to provide a panel washing device which can effectively wash the inner and outer surfaces and the sealing edge or end of a skirt of a panel. To achieve the above object, a panel washing device is provided, comprising a carrier for transferring a panel, a tank installed below the panel transferred by the carrier to receive a skirt of the panel and containing the solution for washing the skirt of the panel. panel, a meshed plate element installed inside the tank, an elastic element, installed between the bottom or bottom surface of the upper part of the tank and the meshed plate element, to elastically bias the meshed plate element in an upward direction, and means for lifting or lifting the tank to the panel.

BRIEF DESCRIPTION OF THE DRAWINGS The above object and advantages of the present invention will become more apparent when describing in detail a preferred embodiment thereof with reference to attached or attached drawings in which: Figure 1 is a sectional view of a cathode ray tube general; Figure 2 is a side view showing a conventional panel washing device; Figure 3 is a side sectional view showing a panel washing device in accordance with the present invention; and Figure 4 is a plan view of a tank shown in Figure 3.

DETAILED DESCRIPTION OF THE INVENTION Referring to Figures 3 and 4, a panel washing device in accordance with a preferred embodiment of the present invention includes a carrier 31 having a top portion or lid portion 31a for supporting each side of the panel 10 so that the sealing end of the skirt 10a of the panel 10 faces in a downward direction and a tank 32 installed below the panel 10 supported by the top portion or top portion 31a. In the center portion or half of the tank 32, a recessed portion 32a for draining air and the wash solution is formed by an internal wall 32c of the tank. Here, an outer wall 32b of the tank 32 is formed to be higher than the inner wall 32c. Within the tank 32, a meshed plate element 33 is installed and elastically deflected to an upward or upward direction by an elastic member 34 installed in the bottom of the tank 32. The meshed plate element 33 supported by the elastic member 34 is limited by a retainer or shutter 32d installed within the outer wall 32b of the tank 32 and placed above the wash solution by a predetermined distance, as well as to maintain the plate member above the surface of the wash solution. Here, acetone is used as the wash solution. A supply tube 35 for supplying acetone is connected to the external wall 32b of the tank 32. A drain tube 36 for draining the washing solution is installed at the bottom of the tank 32. The valves 35a and 36a for controlling the flow rate of the wash solution are respectively installed in the supply pipe 35 and the drain pipe 36. A hoist 40 for raising or lifting the tank 32 to the panel 10 supported by the carrier 31 is installed below the tank 32. The elevator 40 includes a bracket or pedestal 41, attached to the bottom surface of the tank 32 and extending along one side of the tank, a guide rod 43 having an end or edge connected to the tank. bracket or pedestal 41 and slidably installed through a frame 42, and a cylinder 44 having a rod or rod 44a connected to the other end or edge of the guide rod 43. The reference number 50 denotes a hopper or discharge tank for receiving the drain wash solution through the recessed portion 32a. The washing device of the panel according to the present invention having the structure described above, operates as follows. When the panel 10 supported by the top portion or top portion 31a of the carrier 31 is positioned above the tank 32, as shown in Figure 3, the cylinder 44 of the forklift 40 lifts the guide rod 43, thereby lifting tank 32 at a predetermined height. Accordingly, the sealing end or edge of the skirt 10a makes contact with the upper surface of the meshed plate element 33 and the meshed plate member 33 is pressed downward, resisting the elastic force of the elastic member 34, so that the skirt 10a of panel 10 in the wash solution. Therefore, foreign substances such as lacquer stuck to or retained on the inner and outer surfaces and the sealing edge or end of the skirt 10a are washed upon being dissolved in acetone. In the washing panel 10, the tank 32 is preferably rinsed so that foreign substances, such as lacquer, are easily dissolved in the acetone. When necessary, it is possible to rotate the panel 10 as the carrier 31 rotates. It is also preferable to supply the washing solution in a constant amount through the supply tube 35 to maintain an appropriate concentration of acetone during the washing process. At the same time, the tank drain solution 32 is drained to the hopper or discharge tank 50 through the recessed portion 32a located in the central or middle portion. When the inner and outer surfaces and the sealing end or edge of the skirt 10a are completely washed as mentioned above, the end or edge portions of the panel 10 exit the wash solution as the tank 32 descends by operating the cylinder 44. At the same time, the meshed plate element 33, elastically deflected by the elastic element 34, is rinsed when the tank 32 descends and is caught by the retainer or cap 32d. The washing device of the panel of the present invention operated in the manner described above has the following effects. First, the inner and outer surfaces and the sealing end or edge of the panel skirt can be washed. Second, foreign substances attached to the chamfered or chamfered portion of the sealing edge or end can be removed. Third, it is possible to prevent the panel from being excessively immersed in the wash solution since the meshed plate element which contacts the sealing end inside the tank, is installed to be elastically deflected in an upward direction and splashing The washing solution in the panel is then provided for the location of the mesh plate element above the washing solution to be limited by the hopper. Fourth, since the foreign substances, that is to say, remaining lacquer, are completely dissolved by the washing solution, it is possible to prevent the foreign substances from generating a flow of downward flow to the side of the panel. Fifth, it is possible to prevent the vacuum pressure of the leak through the seal of the coupling due to a lower washing process. The panel washing device of the present invention is described with respect to a mode shown in the drawings. However, the present invention is not restricted to the above embodiments, and it is clearly understood that many variations are possible within the scope and spirit of the present invention by one skilled in the art.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which refers to the manufacture of the objects to which it refers.

Having described the invention as above, the content of the following is claimed as property

Claims (7)

1. A panel washing device for a cathode ray tube, characterized in that it comprises: a carrier for transferring a panel; a tank installed under the panel transferred by the carrier to receive a panel skirt and containing the solution for washing the panel skirt; a mesh plate element installed inside the tank; an elastic element, installed between the bottom surface of the top of the tank and the mesh plate element, for elastically biasing the meshed plate element in an upward or upward direction; and means to lift the tank to the panel.

2. A panel washing device for a cathode ray tube according to claim 1, characterized in that the washing solution is acetone.

3. A panel washing device for a cathode ray tube according to claim 1, characterized in that a retainer for limiting the height of the meshed plate element installed in the tank so that the meshed plate element remains above or above the surface of the washing solution in the tank.

4. A device for washing a panel for a cathode ray tube according to claim 1, characterized in that the tank includes an internal wall which is lower than an outer wall of the tank to form a recessed portion in the center of the tank.

5. A device for washing a panel for a cathode ray tube according to claim 4, characterized in that the panel washing device also comprises a hopper or discharge tank to receive the drainage or spill wash solution which is drained through the recessed portion.

6. A device for washing a panel for a cathode ray tube according to claim 1, characterized in that the lifting or lifting means comprise: a bracket or pedestal coupled to the lower part of the tank; a guide rod having an end portion connected to the bracket or pedestal; and a cylinder having a rod connected to the other end of the guide rod.

7. A device for washing a panel for a cathode ray tube according to claim 1, characterized in that it further comprises: a tube that supplies the washing solution connected to the side or side of the tank; and a valve, installed in the supply pipe, to control the supply of washing solution in the tank.