Lamp tube exhauster

Abstract

The invention discloses a lighting tube exhauster, which relates to a machine used for vacuum-pumping, gas filling and washing, inert gas filling and filament decomposition of a fluorescent tube. The lighting tube exhauster is made by: a plurality of vacuum pumps and distribution boxes are arranged on a support plate; the lower part of the support plate is connected with a slewing support, and the upper part of the support plate is connected with a working plate by a plurality of support pillars. A sector plate is connected with a fixed plate to form the support plate; reverse gears are fixed by the lower part of the fixed plate, the reverse gears are engaged with a driving gear, and the driving gear is connected with a gearbox and an adjustable speed motor; a carbon brush is arranged between the fixed plate and a column. Every output terminal on the vacuum pump corresponds to a group of electromagnetic valve units and a lighting tube socket; the vacuum pump, the electromagnetic valve units and the lighting tube socket rotate synchronously among each other. The lighting tube exhauster saves a dynamic and static plate valve train, and effectively puts gas leakage to an end. The lighting tube exhauster saves a dynamic and static plate valve train, effectively puts gas leakage to an end, has good reliability, guarantees the lighting tube processing quality and saves energy.

Description

technical field [0001] The invention relates to a lamp manufacturing machine, in particular to a lamp tube exhaust machine for vacuumizing fluorescent lamp tubes, inflating and flushing, injecting inert gas and decomposing filaments. Background technique [0002] The currently used lamp exhaust machine is of intermittent rotary type, and its vacuum pump is installed on the ground outside the machine. The gas delivery pipe is long, the pipe diameter is thick, and the floor space is large, so the requirements for the vacuum pump are particularly high. The vacuum pump is installed to distribute gas to multiple lamp tubes, and the gas distribution mechanism (moving and static discs) is necessary. Through the relative movement of the moving and static discs, the processes of exhausting, gas flushing, and inert gas filling of the lamp tubes are completed. Because the gas distribution device of the dynamic and static disc relies on the friction and rotation of the surfaces between ...

AI Technical Summary

Problems solved by technology

This structure is difficult to avoid air leakage, especially when the lamp tube is evacuated, the air leakage is more serious, which affects the production quality of the lamp tube

If there is a problem with a pump or a certain part of the gas distribution mechanism, it will affect the vacuum degree of all stations and the quality of the lamp tube

The compensation method for air leakage is to increase the speed and displacement of the vacuum pump, which increases the power consumption, increases the manufacturing cost of the lamp tube, and also affects the quality of the lamp tube.

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