Automatic spraying machine for internal and external walls of steel pipe

Abstract

The invention discloses an automatic spraying machine for internal and external walls of a steel pipe. The automatic spraying machine comprises an internal wall paint spraying device, an external wall paint spraying machine, a left steel pipe driving device and a right steel pipe driving device, wherein the left steel pipe driving device and the right steel pipe driving device are used for driving the steel pipe to do horizontal movement; the external wall paint spraying device comprises a supporting frame, a rolling drum and an external spraying electrical motor; the supporting frame is fixed between the left steel pipe driving device and the right driving device; the rolling drum is arranged on the supporting frame in a rotary manner; two external spraying rolling brushes are respectively fixed on the internal wall of the rolling drum; the external spraying electrical motor is fixed on the supporting frame and drives the rolling drum to rotate through a transmission mechanism; the internal wall paint spraying device comprises an internal spraying material-feeding pipe and an internal spraying electrical motor; the internal spraying material-feeding pipe is arranged along an axial direction of a spraying steel pipe; the internal spraying electrical motor is fixed on a base frame and the output shaft of the internal spraying electrical motor is fixed with the internal spraying material-feeding pipe; the other end of the internal spraying material-feeding pipe is provided with two internal spraying rolling brushes. According to the automatic spraying machine provided by the invention, the simultaneous automatic spraying to the internal and external walls of the steel pipe can be realized when the steel pipe is driven to do the horizontal movement by the left and right steel pipe driving devices; and the work efficiency is greatly increased.

Description

technical field [0001] The invention relates to a paint spraying device for steel pipes, in particular to an automatic spray paint machine for inner and outer walls of steel pipes. Background technique [0002] Traditional finished steel pipes are usually formed by cold rolling, and the inner and outer walls of cold rolling are generally not sprayed with paint. In construction projects, it takes about 2-3 years from the beginning to the completion. In this way, steel pipes It is easy to rust and rot candles outdoors when exposed to wind, sun and rain, which greatly shortens the service life of the steel pipe. [0003] In order to improve the anti-rust ability of steel pipes, the current method is to manually spray paint on the inner and outer walls of steel pipes. However, this method requires a considerable amount of work, and it is difficult to spray paint on the inner walls of steel pipes, so that the steel pipes can be preserved and maintained. It is easy to rust and co...

AI Technical Summary

Problems solved by technology

[0002] Traditional finished steel pipes are usually formed by cold rolling, and the inner and outer walls of cold rolling are generally not sprayed with paint. In construction projects, it takes about 2-3 years from the beginning to the completion. In this way, steel pipes It is easy to rust and rot when exposed to wind, sun and rain outdoors, which greatly shortens the service life of the steel pipe

[0003] In order to improve the anti-rust ability of steel pipes, the current method is to manually spray paint on the inner and outer walls of steel pipes. However, this method requires a considerable amount of work, and it is difficult to spray paint on the inner walls of steel pipes, so that the steel pipes can be preserved and maintained. It is easy to rust and corrode during use, which greatly reduces the service life of the steel pipe

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