JPS58126689A - Method of producing anode plug for cathode ray tube - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing an anode button for a cathode-tube.

Background technology and electric point As is conventionally known, inside the funnel part of a cathode ray tube,
The anode is formed by carbon coating-
Ru. Then, by supplying the high voltage obtained from the flyback transformer to the anode through the anode button and the anode pomen, the 7th node is kept at a high potential.
The electron beam is accelerated.

The conventional anode cap that supplies voltage to the anode is made of rubber. Inside the anode cap, which is made of synthetic wood The anode cap was assembled by pushing it in with great force.During assembly, mechanical stress was applied to the anode cap, and scratches caused by this stress were likely to cause high-pressure leaks. According to such a method, there is a problem that the number of assembly steps increases and each task becomes troublesome.Purpose of the InventionThe present invention provides a method that makes assembly of a 7-node dog very easy and that mechanical stress is not applied during assembly. The present invention provides a method for manufacturing an anode plug that is free of.

Summary of the Invention The present invention 8A holds the connection terminal connected to the 7-node button of the anode ray tube in the metal lid, connects one end of the high-voltage loincloth lead wire to the above connection terminal, and applies a predetermined tension to the other end. Also, a cavity forming a covering portion of the high voltage bare lead wire in the metal lid, and a cavity in which a connection portion between the connection terminal and the one end of the high voltage bare lead wire is embedded and forming an anode cap. The present invention relates to a method of manufacturing a cathode ray anode pug, in which molding is performed by injecting vinyl chloride resin into the gap while applying the tension.

First, as shown in Figure 1, there is a forming field on the upper surface of the lower gold W (1) / J'l hole (2) has a yυ-shaped connection terminal (3). The leading edge is inserted and held in this mold (1). This connection terminal (3) has a high voltage rim material (4).
-Ru is connected to i. This wire (4) is a bare lead wire without a covering. The other end of this wire (4) is inserted into a cylinder (5) which has a through hole with the same diameter #tx as the diameter of this wire (4) at its center, and this cylinder ( A force is applied to the right end of the wire (4) that has passed through the wire (4) in FIG. 1, and the material (ii) (4) is under a constant tension T.

In this state, as shown in Figure IN2, the upper gold W (6) is placed on the lower gold 11 (1). As a result, a shallow mortar-shaped cavity (7) forming a 7-node camp is formed between the mold (1) and the metal lid (6), and a ninth cavity (7) forming a covering part for the wire rod (4). 8) and each other [
formed in a continuous manner. In this case, a tension T is applied to the wire (4).
8) is located at the center of the cross section.

In this state, #iaL transparent vinyl chloride is injected into the cavity +7) (8) from the injection port (9). By cooling and solidifying this vinyl chloride, the connecting terminal (3) is formed as shown in Figure 5 and Figure 4.
A mortar-shaped anode cap α, in which the connection S with the high voltage II # (4) is placed, and the covering portion circle of the high voltage wire (4) are integrally formed to form an anode made of a polyvinyl chloride resin body. You can get a plug α.

According to this Anote Gerag Sumi 4, 7 node cap C
If there is a molding defect (void, crank, etc.) in the transparent vinyl chloride resin body that makes up the 1L and the covering part circle, it can be easily confirmed with the naked eye from the outside.
Defective products can be easily inspected. Mayu's anode plug Q is shown in wJ5 diagram, cathode ray tube A3
It is connected to the anode button α$ provided in the funnel part of the 7-node button a, but even during this connection work, the anode cap GO) is transparent.
The positional relationship between the heater and the connection terminal (3) can be confirmed with the naked eye, improving work efficiency. Note that the other end of the wire (4) is connected to the output side of the fly bank transformer Q4.

By setting the high-pressure rim material (4) to a predetermined length in advance and adjusting the position of the cylinder (5) during installation, the anode plug @ lead i! ! There is no need to process the end of the part. As a result, the number of man-hours required for assembly work can be reduced. In addition, this anode plug ae h * connecting terminal (3) and high voltage wire rod (4) are integrated into a vinyl chloride resin body and are integrated into an integrated device.Next, the wire rod (4)
There is no need to assemble the connecting terminal (3) and the connecting terminal (3) to the anode gap QQ later. Therefore, the number of man-hours is reduced.
There is no need to assemble it, so there is no need to apply excessive force, and there is no need for close contact between the anode cap αQ and the covered part of the edge material (4) (tυ).
can also be effectively avoided.

This makes it possible to obtain the next anode plug U with excellent safety and no high-pressure leakage. Since the tension T is applied to the wire rod (4) which has been stretched over the wire rod (4) and the device is installed in the following state, it is important to ensure that the wire rod (4) is placed at the center of the covered portion (l). This is C
ζ Therefore, it is possible to effectively prevent high pressure leakage from occurring in the covered portion αυ.

Effects of the Invention The assembly of the anode plug can be completed in one time, and the assembly work required for assembly can be greatly reduced. Furthermore, since it is integrally formed into an IIT type, poor adhesion between the anode cap and the lead wire sheathing can be effectively prevented and a highly safe anode plug can be provided. Additionally, vinyl chloride is transparent, making it easy to detect internal defects and easy to install.

Since a bare lead wire is used, it is not only inexpensive but also eliminates the need for covering the lead wire. Since tension is applied to the bare lead edge, the lead edge does not become loose during molding, and can be reliably coated at the same time as molding. Moreover, it is compatible with vinyl chloride.

[Brief explanation of drawings]

The drawings show the implementation of the present invention, and FIG. 1 is a vertical sectional view of the mold in the next state in which the lower mold & C connection terminal is held, and FIG. Figure 6 is a vertical cross-sectional view of the anode plug made by molding, Figure 4 is a front view of the same, and Figure 5 is a 14-sided view of the cathode ray tube with the anode plug attached. It is. In addition, the symbols used in the drawings are as follows: (3) is the connection terminal % (4) is the high voltage I This is the covered part. Daikanjin Satj1ml l Changbao Yoshiman l Sugiru Furiki

Claims (1)

[Claims] A connecting terminal to be connected to the anode button of the cathode ray tube is held in the mold, one end of the high-voltage lead wire is connected to the connecting terminal, a predetermined tension is applied to the other end, and the wire is held in the mold. A cavity forming a covering portion of the loincloth lead wire for high voltage and a cavity in which a contact portion between the connecting terminal and the one end of the high voltage lead wire is embedded and forming an anode cap communicate with each other. A method for producing a nine-cathode ray anotoge 2, in which the tension is applied, and then vinyl chloride resin is injected into the cavity and placed.