A laser cleaning device with adjustable spot shape

Abstract

The invention discloses a laser cleaning device with adjustable spot shape in the field of laser cleaning, which includes a laser cleaning head, an adjustment turntable, and a limit ring with a radius larger than a through hole fixedly arranged on the upper part of the positioning ejector rod, and the lower part of the positioning ejector rod is compressed The spring is connected to the inner wall of the positioning ring, and the corresponding limit rings on the two positioning rings are jointly fixed with a mounting frame. The middle part of the mounting frame is fixed with an outer slide rail and an inner slide rail. The outer slide rail and the inner slide rail pass through two The transposition ring is fixedly connected, the outer slide rail and the inner slide rail can be slidably connected with a push switching lever; the outer end surface of the positioning ring on the side away from the double-head motor is fixedly provided with a fixed plate, and the thread at the center of the fixed plate is provided with an adjusting screw The slope of the limit boss is a synchronous adjustment surface, and the height of the positioning ejector rods in the two positioning rings is adjusted through the synchronous adjustment surface; the invention solves the problem that the traditional device cannot be coaxial with the pipeline axis at all times, and is immune to self-driven equipment. technical problem.

Description

technical field [0001] The invention relates to the field of laser cleaning, in particular to a laser cleaning device with adjustable spot shape. Background technique [0002] The principle of laser cleaning is that plasma is only generated when the energy density is above a threshold value, which depends on the contamination layer or oxide layer being removed. This threshold effect is important for effective cleaning while keeping the substrate material safe. There is also a second threshold for the emergence of plasma. If the energy density exceeds this threshold, the substrate material will be destroyed. In order to carry out effective cleaning under the premise of ensuring the safety of the substrate material, the laser parameters must be adjusted according to the situation, so that the energy density of the light pulse is strictly between the two thresholds. Among them, adjusting the distance between the laser and the cleaning surface is an important way to change th...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a laser cleaning device with adjustable spot shape, so as to solve the problem that the walking method proposed in the above background technology is dragging, which will lead to difficult rope-threading process, especially for long pipelines or curved pipelines. It is extremely difficult; secondly, the walking process of the traveling device is mainly on the uncleaned surface, and the dirt on the pipe surface makes it difficult for the traveling mechanism to ensure coaxial and stable movement with the pipe. The deformation of the spring on the side is obviously larger than that on the upper side, which will also cause the laser emitting end to be unable to be coaxial with the tube body at all times during the movement. Further, because the actual distance between the laser emitting end and each part of the tube wall is different, it will also The threshold value is different, resulting in the problem of poor cleaning effect in the pipeline

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