The present invention belongs to the technical field of
processing of energy-saving lamp tubes, and discloses a U-shaped lamp tube
coating machine, including a frame, on which a transmission mechanism, an upper tube device, a
coating assembly, a film liquid
drying device, and a lower tube device are installed; the transmission mechanism includes a
station clamp; a flip
station is respectively provided behind the upper tube
station and in front of the lower tube station, and the station clamp realizes a 180-degree flip at the flip station through a first push rod, a first stop pin, a second push rod, and a second stop pin matching structure; the
coating assembly includes an injection and suction
assembly; the injection and suction assembly includes a
liquid injection pipe and a liquid suction
pipe arranged side by side, and the
liquid injection pipe and the liquid suction pipe rise and fall with the injection and suction lifting seat, and the
liquid injection and liquid suction are completed by connecting a liquid
injection pump and a liquid suction pump. The upper tube device and the liquid injection and liquid suction mechanism of the present invention have a more streamlined structure; the coating accuracy of the injection and suction assembly is high; the synchronization of the actions of each device is good; and the probability of the lamp tube falling off is low.