Method for improving thickness uniformity of automatic spraying coating

A technology of coating thickness and automatic spraying, which is applied in coatings, devices for coating liquid on the surface, spraying devices, etc., can solve the problem of inability to ensure the uniformity of coating thickness in the left and right overlapping areas of parts, and the inability to continuously spray curved surfaces at one time and other problems to achieve the effect of improving spraying efficiency and ensuring uniformity

Active Publication Date: 2021-04-23
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for complex parts with concave shapes or narrow spaces, it is impossible to spray all the curved surfaces continuously at one time, and the uniformity of the coating thickness in the left and right overlapping areas of the parts cannot be guaranteed.

Method used

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  • Method for improving thickness uniformity of automatic spraying coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 , a method for improving the uniformity of automatic spray coating thickness, comprising the steps of:

[0031] a. Set the spraying width of the spray gun of the spraying robot to L, divide one spraying width into N times to overlap, and determine the front and rear overlapping distance D 1 =L / N, arc radius R= D 1 / 2;

[0032] b. Write the spraying program for the parts, first determine the area to be sprayed, determine the left and right boundaries of the two different spraying areas, then insert the starting point in the area to be sprayed, and set the starting point to shoot the command, and then make a straight line trajectory, the distance between the end point of the straight trajectory and the boundary is D 2 , and at the same time insert the command to close the gun at the end of the straight line trajectory;

[0033] c. Insert the first 1 / 4 arc, and set the shooting command at the end of the arc; then insert the second 1 / 4 arc; then insert a st...

Embodiment 2

[0037] see figure 1 , a method for improving the uniformity of automatic spray coating thickness, comprising the steps of:

[0038] a. Set the spraying width of the spray gun of the spraying robot to L, divide one spraying width into N times to overlap, and determine the front and rear overlapping distance D 1 =L / N, arc radius R= D 1 / 2;

[0039] b. Write the spraying program for the parts, first determine the area to be sprayed, determine the left and right boundaries of the two different spraying areas, then insert the starting point in the area to be sprayed, and set the starting point to shoot the command, and then make a straight line trajectory, the distance between the end point of the straight trajectory and the boundary is D 2 , and at the same time insert the command to close the gun at the end of the straight line trajectory;

[0040] c. Insert the first 1 / 4 arc, and set the shooting command at the end of the arc; then insert the second 1 / 4 arc; then insert a st...

Embodiment 3

[0045] see figure 1 , a method for improving the uniformity of automatic spray coating thickness, comprising the steps of:

[0046] a. Set the spraying width of the spray gun of the spraying robot to L, divide one spraying width into N times to overlap, and determine the front and rear overlapping distance D 1 =L / N, arc radius R= D 1 / 2;

[0047] b. Write the spraying program for the parts, first determine the area to be sprayed, determine the left and right boundaries of the two different spraying areas, then insert the starting point in the area to be sprayed, and set the starting point to shoot the command, and then make a straight line trajectory, the distance between the end point of the straight trajectory and the boundary is D 2 , and at the same time insert the command to close the gun at the end of the straight line trajectory;

[0048] c. Insert the first 1 / 4 arc, and set the shooting command at the end of the arc; then insert the second 1 / 4 arc; then insert a st...

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Abstract

The invention discloses a method for improving the thickness uniformity of an automatic spraying coating, and belongs to the technical field of robot spraying. The method is characterized by comprising the following steps that a, the spraying width of a spraying gun of a spraying robot is set to be L, and one spraying width is overlapped for N times; b, spraying program writing is performed for a part; c, a first 1/4 arc is inserted, and meanwhile, a gun opening instruction is set at the end point of the arc; then a second 1/4 arc is inserted; a straight line track is inserted again, the straight line track is parallel to the previous straight line track, and the starting point of the straight line is not provided with a gun opening and closing instruction; the operation is performed until the rest program tracks are written; and d, the program tracks are guided into the spraying robot, the part is located in a spraying area, paint is added, the spraying robot starts a program, and spraying is completed. For the concave or narrow complex part, all curved surfaces can be continuously sprayed at a time, the thickness uniformity of the coatings of the left overlapping area and the right overlapping area of the part is effectively guaranteed, and the spraying efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of robot spraying, in particular to a method for improving the uniformity of automatic spray coating thickness. Background technique [0002] The spraying of the robot on the surface of the part includes the left and right overlapping areas and the front and rear overlapping areas. There are two commonly used spray patterns at present, one is the elliptical spray pattern of the air gun or high-pressure airless gun, and the other is the circular spray pattern of the rotary cup gun. [0003] In the field of robot automatic spraying, there are mainly the following methods to deal with the left and right overlapping areas of spraying: [0004] 1. Don't turn off the gun halfway. During the spraying process, the gun is not turned off, and the left and right lap distances are adjusted according to experience. Its disadvantages are that it is easy to cause the thickness of the coating in the left and right overla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/02B05B13/04B05B12/08
Inventor 谢伟秦晓东余亮李森叶潇兵谢颖申皓杨博吴学阳
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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