Laser engraving method for mold cavity surface textures

Abstract

The invention discloses a laser engraving method for mold cavity surface textures. The method includes the following steps of mold 3D drawing-document converting; engraving surface selecting; grid creating; texture mapping; software programming; simulating; laser energy testing; engraving processing. As the laser engraving technology is adopted, high-difficulty 3D textures can be freely achieved on the appearance of an injection molding piece, parallel contour lines are subjected to laser forming, laser focal points follow 3D outlines of parts, and the high repeatability and uniformity are achieved. The grid creating and texture mapping technologies are adopted, texture distortion can be improved in adjacent texture conversion areas or surfaces, two kinds of glossiness can be fused, and perfect transition of two textures can be achieved. According to the laser energy testing technology, it can be achieved a prototyping model is directly engraved before textures are engraved according to the hardness of a steel material of a mold. Texture mapping can be from a standard texture database, and remote sharing of texture resources can be achieved.

Description

technical field [0001] The invention relates to the field of texture forming methods, in particular to a method for laser engraving the surface texture of a mold cavity. Background technique [0002] Texture plays an increasingly important role in product modeling and appearance. In addition to fire pattern and sanding pattern, chemical etching process is usually used for texture processing. The wax is moved to the surface of the mold cavity through film exposure, digital printing technology or spray pattern, and then the mold is placed in the chemical tank for corrosion processing. In this way, the waxy areas of the tool material react with the potion and are removed. According to the texture features or depth requirements, repeat the above process, and finally form different texture features on the surface of the mold. However, the disadvantage of the chemical etching process is that the process is complicated and lengthy. The mold undergoes multiple processes to increas...

AI Technical Summary

Problems solved by technology

However, the disadvantage of the chemical etching process is that the process is complicated and lengthy. The mold undergoes multiple processes to increase a lot of potential risks, and when the potion corrodes downward, it will also corrode to the side. The final texture is not sharp enough and the three-dimensional effect is not strong.