2. Photocuring method for making injection molding mold
This is a method of molding an epoxy resin-based photosensitive resin on SL and equipment. It over-scans the surface to be molded with a dense laser beam, ie the laser beam scanning spacing is small, even partially coincident, while the illumination is very uniform. The precision and surface finish of the rapid prototyping parts produced by this method are the best among all current RP methods, so it is commonly used to make the master mold used in the mold making.
The cavity or core of the injection mold is directly produced by this method, and a very good effect is also achieved. It can be used to inject a variety of thermoplastic plastics, even injectable abrasive plastics, with a lifespan of 200 pieces, and the price is moderate. The production time is usually about 2 weeks. It should be noted that the thermal conductivity of the epoxy resin is poor, and although the benefits of using a smaller pressure injection are brought into consideration, the injection cycle problem is also considered.