Plastic mold biting process in plastic mold design
Use chemicals such as concentrated sulfuric acid to react with the steel surface to form snakeskin/etch/pear ground or other methods.
Evolution of plastic mold biting process in plastic mold design
Paragraph 1: subsidy Intention — embellish defects on formed products.
Stage 2: Decoration intention – forward product value.
Stage 3: use the composite speckle to enter a higher era of craftsmanship scheme.
Stage 4: use three-dimensional speckle to enter the era of higher quality.
The requirements of plastic mold biting process in plastic mold design
1. coordinate with the scheme
2. pay for a sense of value
3. equal and complete processing
4. it is not easy to harm the product itself -g type sandblasting, pear floor, leather grain
5. long forming life –1. leather grain 2. pear field 3. sand blasting
6. low price, fast delivery –1. sandblasting 2. pear field 3. leather grain
7. brief repair —–1. sand blasting 2. pear floor 3. skin texture
Pre inspection items of plastic mold biting process in plastic mold design
1. it is necessary to determine the undercut planning, product drawing, die drawing and formed products
2. determination of die steel
3. whether EDM is available
4. whether there is fusion and master its conditions
5. die hardness (heat treatment, nitriding)
6. demoulding angle
7. whether there are cooperative related products (products)
8. type of forming data
9. total number of moulds
10. acknowledge the number of the undercut and the polishing degree on the undercut processing surface
11. inspection of scratches and rust on the surface of plastic mold
Plastic mold undercut process in plastic mold design
The effect of decoration products makes the plastic products processed by injection molding more beautiful and elegant: it overcomes the defects of printing and painting that are easy to wear off; It meets the visual requirements: the plastic products processed by injection molding with bright light like a mirror are easily scratched and stained with dust and fingerprints, and the defects, silk marks and ripples occurring in the composition process will undoubtedly be exposed on the bright surface of the product. However, some decoration stripes, such as leather stripes, orange peel stripes, wood stripes, rain stripes and matte surfaces, can shade the defects of the plastic products processed by injection molding during the forming process, making the plastic products processed by injection molding beautiful and meet the visual requirements. Making stripes can make the surface of injection molded plastic products and the surface of the cavity contain a small amount of air, which will not form a vacuum adsorption, making the demoulding simple. Anti slip, anti rotation, excellent handle. It can be made into pockmarked or matt surface to prevent light reflection, eliminate eye fatigue and so on.
The fancy grain skill is to form various kinds of pictures on the surface of different metal products through the chemical potion effect, such as sand grain, stripe, image, wood grain, leather grain, silk picture, etc. Different skill processes produce different texture characteristics. It also includes the spray pattern program, for example, the appearance of unit file devices, tape recorders, video recorders, cameras, car crash racks, mirrors, flowerpots, tableware, etc. are all made of spray patterns.
Process:
Film washing – mucous membrane – chemical inspection – surface treatment – printing treatment – chemical etching – surface treatment – QC – rust prevention treatment – packaging
Classification:
There are symmetrical patterns, such as square corresponding, circular corresponding, asymmetrical patterns, speckle patterns, wood patterns, similar to the pattern of home decoration material ceramic tiles. Of course, the pattern is not flat, but has lines, three-dimensional feeling, and concave and convex. There are also some characters including etched words, etc