Pre-drying device for aluminum tube internal coating procedure

Abstract

The invention discloses a pre-drying device for an aluminum tube internal coating procedure. The pre-drying device comprises a placing plate, wherein supporting legs are fixedly connected to the fourcorners of the bottom of the placing plate, and a plurality of groups of supporting frames are arranged on the top of the placing plate; each supporting frame comprises two groups of electric telescopic rods, the top of each group of electric telescopic rods is fixedly connected with supporting plates, a servo motor is arranged on the right side of the placing plate, a screw rod is connected to the servo motor, a sliding sleeve is arranged on the screw rod, the sliding sleeve is in threaded connection with the screw rod, a sliding groove is formed in the placing plate, a sliding rod is arranged in the sliding groove, the top end of the sliding rod is fixedly connected with the bottom of the sliding sleeve, the top of the placing plate is connected with a fixing plate, the screw rod is rotationally connected with the fixing plate, an air blowing head is arranged on the sliding sleeve, the air blowing head is connected with an elastic hose, the elastic hose is connected with a hot air blower, and a control panel is arranged on the front end face of the placing plate. The pre-drying device is simple in structure and capable of simultaneously drying multiple groups of aluminum tubes, the drying effect is good, and meanwhile, the supporting frames can be adjusted according to different sizes of the aluminum tubes, and hot air is conveniently blown into the aluminum tubes directly.

Description

technical field [0001] The invention relates to the field of drying equipment inside aluminum tubes, in particular to a pre-drying device used before the inner coating process of aluminum tubes. Background technique [0002] Aluminum tube is a kind of non-ferrous metal tube, which refers to a metal tubular material that is hollow along its longitudinal length through extrusion processing of pure aluminum or aluminum alloy. The aluminum tube can be strengthened by heat treatment. It has medium plasticity under annealing, just quenching and hot state, and good spot weldability. The aluminum tube has a tendency to form intergranular cracks when gas welding and argon arc welding are used; the aluminum tube is hardened after quenching and cold work. The post-machinability is still good, but it is not good in the annealed state. It can also be used as a mold material. Aluminum tubes have many advantages. One is the advantages of welding technology: the welding technology of thin...

AI Technical Summary

Problems solved by technology

[0003] Due to the low corrosion resistance of aluminum tubes, it is sometimes necessary to internally coat the aluminum tubes. After the aluminum tubes are annealed at high temperature, they need to go through a long storage and assembly line to reach the internal coating process. During the period from annealing to internal coating, the aluminum The temperature of the tube is basically reduced to about 50°C. During the process from more than 300°C during annealing to 50°C during cooling, the inner wall of the aluminum tube will absorb a lot of fine impurities and water vapor, which will affect the adhesion of the inner wall surface. Therefore, before internal coating Generally, it is necessary to pre-dry the aluminum tube. The traditional treatment method is to dry it directly with hot air, and the drying effect is poor.

Images