Method and apparatus for manufacturing cathode ray tube

Details Method and apparatus for manufacturing cathode ray tube Method and apparatus for manufacturing cathode ray tube

1986-12-23

1988-03-15

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

65 36, 65155, 65271, 445 66, 445 70, 432225, H01J 926

Patent

active

047310405

ABSTRACT:
In a method for manufacturing a cathode ray tube, a bulb is held by a first holding mechanism. An electron gun is inserted and held in a neck portion of the bulb by a second holding mechanism. Then, the neck portion and a stem of the electron gun are welded by a welding unit. The unit includes an annular burner having an inner surface with a plurality of burner holes formed in substantially the entire area along a circumferential direction thereof. The annular burner is constructed by two burner members which can be separated in a radial direction. The burner is positioned by an opening/closing mechanism and a reciprocating mechanism such that the inner peripheral surface of the burner is coaxially located outside the neck portion and opposes the stem of the electron gun. Thereafter, the neck portion is heated by flames injected from the burner holes, and then the burner is reciprocally rotated about its axis through a predetermined angle.

REFERENCES:
patent: 2745479 (1956-05-01), Young
patent: 2886336 (1959-05-01), Reynard
patent: 4433970 (1984-02-01), Spainhour
patent: 4561874 (1985-12-01), Colacello et al.
patent: 4618355 (1986-10-01), Otto et al.
RCA Technical Notes--TN No. 1299, RCA/Princeton, N.J., Apr. 6, 1982.

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