JPS6062041A - Getter support for electron gun - Google Patents

Abstract

PURPOSE:To easily convert the aligning feed work of a getter support at welding that required a great amount of man-hour in the past to an automatic supply and improve the assembly work efficiency and reliability of an electron gun by providing a protrusion or a raised notch that forms alignment and aligning feed standards. CONSTITUTION:A getter support 8 has raised notches 8a and 8b on its tip surface that forms a getter welding section on the front and rear in the plate thickness direction by press molding, etc. In addition, an aligning feed groove 11 conforming to the circular curvature of the getter support 8 is provided between a pair of aligning feed guides 9 and 10. For work alignment, for example, by spirally arranging the opposed aligning feed guides 9 and 10 in an electromagnetic feeder through this aligning feed groove 11, the main body of the work falls in the above groove 11 during the movement of the work, the raised notches 8a and 8b are hooked by guides 9 and 10 on both sides, the work is retained, and a series of the aligned getter supports 8 can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a getter support used as a molded component of an electron gun loaded into a tube such as a color television cathode ray tube or a color display cathode ray tube.

[Background of the invention]

Generally, this type of color cathode ray tube electron gun has a basic configuration as shown in FIG. That is, a plurality of control electrodes 2a, 2b, 2c are connected to the control power introduction stem 1.
, 2d are welded and fixed to two bead glasses 3 and connected to constitute an electronic lens. In addition, a plurality of leaf springs 4 are attached to the upper part of the cathode ray tube in order to center the entire electron gun and absorb external vibrations by contacting the inner wall of the cathode ray tube. The getter 7 is supported by a getter support 5 and a getter protection spring 6TIc.

The components of these electron guns were manufactured by press-forming thin plates with a thickness of 0.05 to 0.4 mm made of soft metals such as stainless steel, or made of porcelain materials such as glass and ceramics. When performing assembly work for this purpose, careful attention is required in each work such as supplying, assembling, unloading, and detecting workpieces, and therefore manual work that requires skill is the main activity. For example, the getter support 50 is assembled to the getter 7 by spot welding, and the getter support 5 has a plate width of about 3 mm as shown in FIG.
．． 9mm, board thickness approx. 0.2mm, radius of curvature of 5 bows, approx. 49m
It is made of elastic stainless steel and has a thin arcuate flat plate shape of 1.5 m in diameter, making it difficult to automatically align and feed as it is impossible to secure a reference surface for feeding. This method involves arranging the parts and then feeding them into an automatic assembly machine, which requires a huge amount of man-hours.

[Purpose of the invention]

The present invention was made in view of these circumstances, and its purpose is to enable automatic forward movement and automatic sorting, which had been difficult in the past, and to facilitate automatic assembly of a getter assembly with excellent reliability. The goal is to provide getter support.

[Summary of the invention]

In order to achieve this purpose, the getter support of the present invention maintains the basic structure of the conventional thin-walled arcuate flat plate, while providing protrusions or cut-outs in arbitrary parts to align and align them. This is the standard for shipping. Hereinafter, the present invention will be explained in detail using Examples.

[Embodiment of the Invention] FIG. 3 is a perspective view of a getter support showing an embodiment of the invention, and FIG. 4 is an enlarged perspective view of the tip A portion thereof. As shown in the figure, the getter support 8 is -
On the tip surface, which will become the getter weld, a cut-out 8m and 8b is provided on the front and back in the plate thickness direction by press molding or the like. This raised part also functions as a lead wire that supplies high voltage of approximately 25 KV during operation of the cathode ray tube, so if the raised part is too large or has a sharp protrusion, high-voltage sparks may occur. There is a danger. For this reason, in this embodiment, the cut and raised portions 8a and 8b have a length of about Imm, and the end surfaces are rounded.

An example of the automatic feeding method of the getter support 8 will be explained with reference to FIG. In the figure, a coordinating feed e11 matching the arcuate curvature of the getter support 8 is provided between a pair of coordinating guides 8 and 10.

In the case of a workpiece wave train, for example, by arranging the feeding guides 9 and 10 facing each other via the feeding groove 11 in an electromagnetic feeder in a spiral manner, the main body of the workpiece is placed in the groove 11 while the workpiece is being moved. It fell and was cut up 8m.

8b is caught on and held by the guides 9 and 10 on both sides, resulting in a series of getter supports 8 aligned with VC as shown in the figure.

Furthermore, when the alignment grooves 11 are arranged in a straight line, it is extremely easy to transport the workpieces in an aligned state by the length of the guides 9 and 10 on both sides.
Furthermore, by connecting a welding mechanism to such a feeding mechanism, an unmanned automatic assembly machine can be easily put into practical use. Indicates the condition.

Above, we have explained an example in which a cut-and-raised part is provided at the tip of the galley support, which protrudes from the front and back in the thickness direction. Of course, the tip is not limited to the above-mentioned tip, and other shapes of cut and raised or protrusions may also be used. However, it goes without saying that in determining the shape, consideration must be given to the high-pressure spark as described above.

〔Effect of the invention〕

As explained above, according to the present invention, by providing the protrusions or cut-outs that serve as alignment and feed standards, getter support welding, which conventionally required a large number of man-hours depending on hand-made strips, can be performed. The rudder feed shaft can be easily converted into a self-contained one with stability and reliability, and the electronic i
It becomes possible to improve the fabrication rate and reliability of one assembly.

[Brief explanation of the drawing]

Figure 1 shows the basics of an electron gun, ``i'', ゛・(l'')
,h'r Figure 2 shows the shape of a conventional getter support (Fig. 1 is a perspective view of the cover 1), Figure 3 is a perspective view of a getter support showing one embodiment of the present invention, and Figure 4 shows its tip. The coffin 3 shown in Figure A is also an enlarged perspective view of 14 minutes, and Figure 5 is an automatic alignment machine d.
FIG. 6 is a perspective view showing the vicinity of the getter the boat front chamber 1.1 of the electron gun in which the getter support according to the present invention is assembled.

Claims (1)

[Claims] A getter support for an electron gun, characterized in that the getter support for an electron gun is in the form of a thin arcuate flat plate made of a spring material, and is provided with a protrusion or cut-out at an arbitrary position to serve as a reference for alignment and feeding during automatic feeding.