An automatic paint spraying device for inner walls

Abstract

The invention provides an automatic paint spraying device of an inner wall used for low viscosity paint spraying. The automatic paint spraying device comprises a spraying car (3), a funicle cable (4), a spraying car guiding unwheeling (5) and an electrical controlled cabinet (6). The spraying car (3) is operated in a metal circular tube product (1). The spraying car (3) is composed of an underpan, a walking driving system, a paint spraying system, a pneumatic control system and a protecting cover. The spraying car (3) is controlled by the walking driving system to walk along the forward direction and the backward direction of the spraying car guiding unwheeling (5). Automatic open and close of a spray gun by the paint spraying system is achieved through the pneumatic control system, and therefore the automatic paint spraying to the inner wall of the metal tube (1) is achieved. Paint supplying, open and close of the spray gun and adjustment of spray range of a fan face are achieved by the pneumatic control system. The blank space of the field of automatic spraying of a circular tube inner wall with big tube diameter by using low viscosity paint is domestically filled. Thickness of paint surface of sprayed low viscosity paint is even, quality is stable, and process automation of inner wall spraying by using low viscosity paint is achieved.

Description

technical field [0001] The invention relates to an inner wall automatic paint spraying device, which is especially suitable for spraying low-viscosity paint. Background technique [0002] The inner wall of the large-diameter metal round pipe needs to be sprayed with primer and topcoat to prevent rust. Some products use low-viscosity paint (viscosity 10-30s). In the past, when spraying the inner wall, workers had to climb into the pipe and use a manual spray gun to spray the primer and topcoat, and partially spray the dead corners for brushing and touch-up paint. [0003] The main problems that the above-mentioned spraying method exists include: [0004] 1. Poor coating quality [0005] The space inside the metal pipe is narrow, the space for workers to move is limited, and manual spraying is difficult. Directly affect the quality of spraying, resulting in uneven paint film thickness, poor surface smoothness, local spraying dead angles, large quality fluctuations and other...

AI Technical Summary

Problems solved by technology

[0004] 1. Poor coating quality

[0005] The space inside the metal pipe is narrow, the space for workers to move is limited, and manual spraying is difficult

Directly affect the quality of spraying, resulting in uneven thickness of paint film, poor surface smoothness, local spraying dead angle, large quality fluctuation and other spraying defects

[0006] 2. Low spraying efficiency

[0007] At present, the efficiency of manual spraying is low. After each layer is sprayed, the round tube needs to be dried before manual touch-up and subsequent operations.

[0008] 3. Poor working environment

Not suitable for spraying low viscosity paint

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