KR910005848Y1 - Assembling tool of electrode for electron gun - Google Patents

Abstract

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Description

Electrode Assembly Fixture for Electron Gun for Cathode Ray Tube

1 is a side view of a partial ablation of a typical cathode ray gun.

Figure 2 is a perspective view of the electrode assembly jig for a cathode ray tube electron gun according to the present invention.

3 is a side view showing an extract of the welding state of the electrode shown in FIG.

* Explanation of symbols for main parts of the drawings

S: Electrode support rod E: Bead glass

F: Flange B: Base

Ba: electrode support

The present invention relates to an electrode assembly jig of an electron gun for a cathode ray tube, and more particularly, to a schematic so that alignment and welding of electrodes inserted thereto may be performed in one electrode assembly jig.

In general, an electron gun for a cathode ray tube is as shown in FIG. 1, which includes a cathode K forming a preamplified triode, a control electrode G1, a screen electrode G2, and a focus electrode G3 forming a main lens part. Alternatively, the auxiliary electrode Gi is welded and fixed to the anode electrode G4 in order to connect and accelerate the electron beam emitted from the cathode K or to modify the cross-sectional shape of the electron beam. The electrodes are fixed to the bead glass E so as to maintain a predetermined interval.

In order to assemble the electron gun as described above, the anode electrode G4 and the auxiliary electrode Gi are first weld-fixed in a separate assembly jig and then weld-fixed to the electrode assembly jig and then inserted into the electrode assembly jig and sequentially The bead glass E is fixed to insert electrodes to maintain their spacing.

The electron gun assembled as described above has poor assembly accuracy of the anode electrode G4 and the focus electrode G3, and thus, color purity of the cathode ray tube is resisted. That is, since the anode electrode G4 and the auxiliary electrode Gi are assembled in a separate assembly jig, and inserted into the electrode assembly jig for assembling the electron gun, the alignment of the electrodes becomes poor due to an error on the electrode assembly jig. Since the electrode assembly jig is inserted into the electrode assembly jig, the alignment of the electrode becomes poor due to an error on the electrode assembly jig, and the trajectory of the electron beam connected and accelerated from the assembled electron gun is changed, and when the electron beam is landed on the fluorescent surface, color purity occurs. Will be resisted.

Accordingly, an object of the present invention is to provide an electrode assembly jig for a cathode ray tube electron gun, in which an alignment and welding of an electrode and an auxiliary electrode constituting an electron gun are performed on one assembly jig.

In order to achieve the above object, the present invention, in the electrode assembly jig of the electron gun for cathode ray tube arranged in a row with three electrode support rods are maintained at predetermined intervals on the base, the base is formed in a + shape, the base in the longitudinal direction It is characterized in that the width of the formed narrower than the width of the electrode to be assembled to weld the auxiliary electrode and the electrode inserted into the electrode support rod.

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

Electrode assembly jig (J) of the electron gun for cathode ray tube of the present invention line the electrode support rod (S) at the same interval as the lens forming hole (H) formed on the electrode on the elliptical base (B) as shown in FIG. The longitudinal width W of the base is formed to be narrower than the width WG of the electrode to be assembled. In addition, the base B is formed to have a + shape by forming electrode supporting parts Ba and Ba having the same height extending in the axial direction at both central portions of the side surfaces in the length direction of the base B.

Reference numerals F and Wd denote flanges and spot welding rods of the electrodes.

The electrode assembly jig (J) of the cathode ray tube electron gun of the present invention configured as described above is inserted into the electrode support rod (S) fixed to the base (B) in order to be fixed with a bead glass (E). At this time, when the auxiliary electrode Gi and the anode electrode G4 are inserted into the electrode assembly jig J, the flanges F of the auxiliary electrode Gi and the anode electrode G4 overlap with each other to form the base B. Since the base width W of the portion excluding the electrode support part Ba is formed to be narrower than the width of the anode electrode G4 and the auxiliary electrode Gi, the base width W protrudes from the base B. Therefore, the protruding flange (F) can be easily welded by moving the spot welding rod (Wd) from the top and bottom.

As described above, when welding of the anode electrode G4 and the auxiliary electrode Gi to the electrode assembly jig is completed, the electrode of the electron gun inserted into the electrode assembly jig is semi-melted bead glass E. The assembly of the electron gun is completed.

As described above, the electron gun produced by the assembly jig of the cathode ray tube electron gun of the present invention improves the alignment of the components, thereby preventing distortion of the electrostatic lens formed between the electrodes, and thereby preventing the spread of the electron beam landing on the fluorescent surface. It is possible to prevent the high-quality cathode ray tube can be manufactured.

Claims (1)

In the electrode assembly jig of the electron gun for cathode ray tube fixed to the three electrode support rods (S) are arranged in a row, the predetermined length is maintained on the base, the base (B) is formed in the + direction, the base (B) length direction The width W of the electrode is formed to be narrower than the width (WG) of the electrode to be assembled, so as to allow welding in the state in which the auxiliary electrode Gi and the electrode G4 is inserted into the electrode support rod (S) Electrode assembly jig for cathode ray tube electron gun.