JPH07249376A - Degreasing and cleaning method for cathode-ray tube member - Google Patents

Abstract

PURPOSE:To effectively accelerate the separation of fats and fatty oils and enhance peeling off efficiency by intermittently spraying a spray on a component to be cleaned in a degreasing, cleaning method for a cathode-ray tube member. CONSTITUTION:When a component 1 to be cleaned transported with a transporting mesh belt 2 is positioned in a cleaning part and stops, a controller 9 controls according to a controlled condition a solenoid valve 8 so as to repeat opening/closing. A cleaning solution 10 is intermittently sprayed from a spray nozzle 4 to the component 1. Since the cleaning solution 10 intermittently flows on the surface of the component 1, fats and fatty oils swelled and floated by the flow of the cleaning solution 10 are forced to peel off by striking force of the spray. By intermittently spraying, sprayed particles of the spray strike the swelled fats and fatty oils to force to peel them off by the striking force of the spray. The fats and fatty oils are effectively removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for degreasing and cleaning cathode ray tube members.

[0002]

2. Description of the Related Art In the process of manufacturing a cathode ray tube, in order to remove oils and fats adhering to a large member of the cathode ray tube, for example, a shadow mask, cleaning is performed by continuously spraying an aqueous or semi-aqueous cleaning liquid with a spray nozzle. ing.

[0003]

In the above prior art, since the spray is continuously applied, the cleaning liquid continuously flows on the surface of the object to be cleaned. For this reason, since the oils and fats swollen by the cleaning liquid are peeled off due to the viscosity of the flowing cleaning liquid, there is a problem that the peeling force is weak and the degreasing efficiency is poor.

It is an object of the present invention to provide a degreasing and cleaning method for a cathode ray tube member which can remove oils and fats efficiently.

[0005]

In order to achieve the above object, in a degreasing and cleaning method for a cathode ray tube member, in which a cleaning liquid is sprayed onto an object to be cleaned, the spray is intermittently sprayed onto the object to be cleaned. Is characterized by.

[0006]

By spraying the cleaning liquid, oils and fats attached to the object to be cleaned swell. Once the spray is stopped, the cleaning liquid flowing on the surface of the object to be cleaned is stopped.By spraying again, the spray particles hit the swollen oils and fats, and the swollen oils and fats are forced by the striking force of the spray. The oil and fats are removed more effectively by peeling off the oil.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The object to be cleaned 1 such as a shadow mask is placed on the carrying mesh belt 2 and carried in a direction perpendicular to the paper surface. In the cleaning unit, nozzle pipes 3 are arranged in parallel above and below the carrying mesh belt 2, and spray nozzles 4 are provided in the nozzle pipe 3 toward the article to be cleaned 1 placed on the carrying mesh belt 2. Has been. A pressure gauge 5 and a needle valve 6 are provided in the upper and lower nozzle pipes 3, respectively.
The spray pressure of the upper and lower spray nozzles 4 can be adjusted respectively. A supply pipe 7 for supplying a water-based or semi-water-based cleaning liquid is connected to the nozzle pipe 3, and the supply pipe 7 is provided with a solenoid valve 8. The solenoid valve 8 is controlled by the control unit 9.

Next, the operation will be described. When the article to be cleaned 1 is conveyed by the conveyance mesh belt 2 and stops at the cleaning section, the solenoid valve 8 is controlled to repeat opening and closing based on the condition managed by the control section 9. As a result, the cleaning liquid 10 flows from the spray nozzle 4 to the cleaning target 1
Erupts intermittently (intermittently) toward. Therefore, the cleaning liquid 10 intermittently flows on the surface of the object to be cleaned 1,
The cleaning liquid 10 flows and swells, and the oils and fats that have floated up are forcibly peeled off by the impact of the spray.

This action will be described in more detail. Cleaning liquid 10
By spraying, the oils and fats attached to the article to be cleaned 1 swell. When the spraying is stopped once, the cleaning liquid 10 flowing on the surface of the object to be cleaned 1 is stopped. By spraying again, the swollen oils and fats come into contact with the spray particles, and the swollen oils and fats are sprayed with a hammering force. To forcibly remove the oil and fats more effectively.

FIG. 2 shows another embodiment of the present invention. In this embodiment, the objects to be cleaned 1 can be stacked. That is,
The transport mesh belts 2A and 2B are arranged vertically, the transport mesh belts 2A and 2B are coupled by a coupling member 11, and the transport mesh belt 2B is driven by the transport chain conveyor 12. The transport mesh belts 2A, 2
B is provided with a shield plate 13 that surrounds the object to be cleaned 1 so that the cleaning liquid 10 does not scatter. Further, similarly to the above-described embodiment, nozzle pipes 3A and 3B are respectively arranged in parallel above and below the transport mesh belts 2A and 2B, and the nozzle pipes 3A and 3B are placed on the transport mesh belts 2A and 2B. Spray nozzles 4 toward the object to be cleaned 1
A and 4B are provided, and the pressure gauges 5A and 5B, the needle valves 6A and 6B, and the solenoid valve 8 are provided in the nozzle pipes 3A and 3B.
Is provided, and the solenoid valve 8 is controlled by the control unit 9 in the same manner as in the above embodiment.

Therefore, in the case of the present embodiment as well, as in the case of the above-described embodiment, the solenoid valve 8 is controlled by the control unit 9 to obtain the same effect as that of the above-mentioned embodiment. Further, in the case of the present embodiment, since the objects to be cleaned 1 can be stacked, the effect that the quantity per unit area increases can be obtained. In each of the above-described embodiments, the case where the object to be cleaned 1 is a shadow mask has been described, but the same can be applied to a mask frame, an inner shield, a panel and the like.

[0012]

According to the present invention, since the spray is intermittently sprayed on the object to be cleaned, the particles ejected from the spray directly contact the oils and fats swollen with the cleaning liquid, effectively promoting the separation of the oils and fats. The peeling efficiency can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a degreasing cleaning method for a cathode ray tube member according to the present invention.

FIG. 2 is an explanatory view showing another embodiment of the method for degreasing and cleaning a cathode ray tube member according to the present invention.

[Explanation of symbols]

 1 item to be cleaned 4, 4A, 4B spray nozzle 8 solenoid valve 9 controller 10 cleaning liquid

Claims (1)

[Claims] 1. A degreasing cleaning method for a cathode ray tube member, comprising spraying a cleaning liquid onto an object to be cleaned to clean the object.
A method for degreasing and cleaning a cathode ray tube member, characterized in that the spray is intermittently sprayed onto an object to be cleaned.