Assembly method of metal parts in color crt

Abstract

Abstract PURPOSE:To obtain stable welding strength by bringing multiple metal parts formed with a blackened film enclosed in a tube in contact with predetermined positions by use of a positioning unit respectively then welding them with laser rays. CONSTITUTION:A black film is formed on a shadow mask 4, a frame 6, an inner shield 7 enclosed in a tube. A panel 1 fitted with the mask 4 is mounted on a working table 10, a positioning bar 16 is driven upward to get in contact with a positioning plate 13 for positioning, and it is hung with a vacuum chuck 17. Next, a magazine 20 mounted with the inner shield 7 is fed, and the shield 7 is positioned at a predetermined position of the frame 6 with a sway arm 23 having a vacuum chuck 22. A laser ray passing hole is formed on one side of the shield 7, and the other side edge where this passing hole is not formed is brought into contact with the frame 6. Under this condition, laser rays 26 are illuminated to a weld 24 to be welded through the hole, and stable welding strength can be obtained.

Inventors

• 👤 Yukio Shimizu
• 👤 幸夫 清水
• 👤 Mutsuo Hoshino
• 👤 星野　六夫
• 👤 Hitoshi Takeda
• 👤 均 武田

Bibliographic Details