The manufacturing process of the replica of the hand board model is as follows
The mold opening modes include package mold, brush mold (divided mold, three-dimensional mold, plane mold) and pouring mold, which are determined according to the size of the product.
Mold wrapping: first, wrap a layer of 3 ~ 5mm thick soil on the mold seed, make a plaster coat, remove the soil stains, demould the mold seed, pour the stirred silica gel and curing agent into the plaster coat with mold seed, and solidify.
Brush mold: General brush three layers, according to the mold requirements of multi-layer, a layer of brush on the mold vacuum, brush in place. Two layers of gauze. The third cover is cured.
Pouring mold: pour the silica gel and curing agent evenly into the container surrounding the mold seed, and vacuum to solidify. Some can not be directly taken out of the mold also have to cut demoulding, in order to smooth production.
Characteristics of handboard silica gel: low viscosity, good fluidity, easy operation, small shrinkage, no deformation, shrinkage of 2 / 1000. If the shrinkage rate is large, the product will be smaller, and other liquids will be deformed and resistant to high temperature when they become solid.
The difference between the manual mould and CNC manual processing is as follows:
1. Differences in processing methods:
The use of a lathe processing requires a manual Gong, and vacuum lamination is to make an original, and then according to the original to make a silicone mold to copy.
2. Material difference:
The hand board is made of common ABS, PP, acrylic and other materials, and the vacuum lamination is really harmful to ABS, PP, acrylic materials.
3. Processing time difference:
Vacuum lamination can be copied as long as the silicone mold is made. Generally, a silicone mold can produce 8-15 products, which is much faster than CNC processing.
4. Accuracy difference:
The precision of CNC machining will be much higher than that of vacuum laminating.
5. Difference of surface treatment:
Hand model surface treatment, such as oil spray, the general CNC made hand can spray oil into the oven to dry, while the vacuum film out of the hand can only dry naturally.