Manufacturing process of plastic prototype model

There are four kinds of materials for making plastic prototypes: ABS, PC, MMA, PU, etc. ABS is the most commonly used material for making prototypes; PC and MMA are used for making transparent parts; PU is the material for making small batch products of silicone mold. ABS is a block with a lower density than the injection molded ABS. After processing, the internal molecular chain was cut and broken. I. CNC machining center:

CNC machining center directly processes and forms according to the compiled procedures, which is cheaper than laser rapid forming, CNC prototype materials are widely selected, the size is accurate, and there are many types of prototypes that can be made.

2. Laser Rapid Prototyping:

sub-SLA and SLS

1. SLA laser molding is made of UV light controlled by computer, scanned and solidified layer by layer according to the program written in advance, closest to the design drawing file, with high accuracy and fast single piece speed. ( The material of the defect SLA is easy to break, and it needs to be supplemented quickly to adapt to the prototype of multiple sets of products)

2. SLS (Selective laser sintering of powder materials)Formed by powder-like materials. Spread the material powder on the upper surface of the formed part and scrape it flat; high-intensity CO2 laser is used to scan the section of the part on the newly paved new layer; The material powder is sintering together under high-intensity laser irradiation to obtain the section of the part and connect with the formed part below; When a layer of cross section is finished, a new layer of powder material is laid, and the lower section is selectively sintering. ( Advantages: it can use a variety of materials, simple manufacturing process, high precision, high material utilization rate, low price and low cost; Warp deformation is smaller than SLA. Disadvantages: the surface of the part is rough, the particles are large, and the surface needs to be polished manually. )

3. Complex model (Vacuum perfusion) :

vacuum compound mold is made of silicone mold in vacuum state by using the original model, and in the vacuum state, PU material is used for

pouring, thus cloning the same as the original sample, which is higher than the high temperature resistance of the original sample, copies with good performance in all aspects of strength and hardness, if the customer requires several sets or dozens of prototypes, it is very suitable for this method, which greatly reduces the cost.

4. Manual processing:

samples made in the above three ways are sampled and polished and assembled. Assembled into finished products, can be shipped after quality inspection.

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