Rapid prototyping

Rapid prototyping is a technology used to rapidly construct solid objects using three-dimensional computer aided design (CAD) data. The first technique in prototyping, stereolithography, was develop in the late 1980′s to produce prototype parts and models. In todays rapid prototyping techniques, parts can be manufactured in near production-quality in relatively small numbers, sometimes eliminating the use of injection molded parts.

1. Why Prototyping?

   Usually, the new designed products aren’t perfect, even can’t use. The prototype is the first step to verify the feasibility, is the most effective way to find out the lacking, defects and drawbacks of the designed products. Prototyping usually is just making several samples, and the delivery is fast, cost is low, and more important is we can quickly find and improve the designed products, which provides a sufficient basis for stereotypes and mass production.
   1, Test appearance design. Prototyping is not only visual, but also in touch, and you can reflects the designer’s creativity in kind intuitively, which can avoid the abuse of“Beautiful design but not beautiful products”.

   2, Test the design structure. As the prototyping is assembly, so it can reflects the rationality of the structure and Installation of the products intuitively

   3,  Avoid the risk of directly plastic mould making

   4,  Make the product available much earlier. As the prototyping is in advance, you can prepare for publicize, earlier sale, produce the products use the prototyping before the mould making is finished, in order to dominate the market as soon as possible

   What We Can Do?

   

   injection molding | plastic molding | Plastic injection mold

   Our company as a medium-sized factory for plastic products and injection mould design, mould making, plastic moulding and assembly, also is famous in china in prototyping factory. In the early stage of our factory, we are mainly focusing on rapid prototyping and mould making. Now, we can provide plastic prototyping, silicon prototyping and metal prototyping. According to the requirements of the customers, we are mainly use SLA/SLS and CNC prototyping.

   Our Advantages:

   1 Lower cost and higher quality than other places

   2 Fast delivery as we equipped with advanced machines

   3 Experienced as our operators are all have more than five years’ experience

   4 Production methods are optional as we can provide two choice: SLA/SLS and CNC.

   5 Material sundry, you can choose plastic prototyping( mainly use plastic), silicon prototyping(mainly use silicon) and metal prototyping ( mainly use Aluminum-magnesium alloy and other Metallic materials)

   6 We can provide signal or several prototyping products

   7 System management in all links.

These advantages greatly benefits the product development process in terms of cost, quality, and lead-time.

Rapid prototyping process:

1. 3D CAD model is converted to Stereolithography (.STL) format.
2. The Rapid Prototyping machine processes the STL file layer by layer.
3. Manual finishing and cleaning.
   

   Plastic Molding

Injection Machine Tonnage Computation

How to compute for injection plastic molding machine tonnage:

1. Projected area or shadow area including runners and gates: A
2. Peak pressure: P
3. Clamping force = A x P
4. Include factor of safety
5. Choose the machine.

First, calculate the area, A, projected by the part that you will be molding. Include runners and gates and total number of cavities.

Find the pressure, P, that you will use in molding the part. There are multiple pressure in molding process and you have to identify the peak pressure.

Compute for the ideal clamping force, F:

F = P x A

Include factor of safety to prevent flashing on parting lines. This should be more than 1.

Select the machine tonnage that you will be using. The common practice is you have to choose the machine tonnage so that it is greater than the ideal clamping force that you have computed earlier.