design a plastic part
As a new comer, today I finally have a chance to design a plastic part, now I want to share something I gained during design: […]
about mold design
Of course, after understanding product well, in mold designer side, he or she also allow to suggest changes, especially in the areas of fragile mold cores or thin ribs, not only to make the mold easier to build but also to extend the life of the mold and to improve its serviceability.
understand product well
As a professional mold designer, it is very important to understand product well. For example, where and how is the product to be used? Required fits with other products, finish, strength, location of gate, ejector, etc.
make sure your tolerance make sense
In order to make sure that the tolerances shown on the product drawing make sense and can be achieved. the mold designer must know molding characteristics of specified plastic well, […]
product designer and tolerance
Our product designers often make mistakes in assigning tolerance to the product that are not necessary for the function of product. The proper method is to give a relatively large general tolerance and tighten up dimensions only where it is necessary for the function of the product or where it is required in the assembly [...]
tolerance on the product drawing
Tolerances are probably the most important areas to be checked. When this project is quoted, the tolerance will be checked and question. Before designing, the final drawing released with complete tolerance should be required. because a large portion of the machining cost is directly related to the tolerance.
molding cycle
In order to achieve the shortest possible molding cycle, special cooling methods, added ejection features, special mold material and lubrication will be considered, on the other hand, some other elements may also have a significant impact on the molding cycle. For example Differences in the plastic, wall thicknesses, draft angles, methods of gating and so [...]
do you know anticipated molding cycle before mold design?
As for anticipated molding cycle, no matter our customers or mold makers always want to build a mold with shortest possible molding cycle. But making cost is a real problem. How to find a suitable solution to meet our customer requirement at a competitive price will be very important to every mold maker.
degraded material means waste
When any product contains even small portions of degraded material, it must be discarded, not only because of poor appearance of the product but physical properties may have been lost and the product will not perform as expected.
how to identify thermoplastic material degradation
how to identify thermoplastic material degradation? I want to say when all thermoplastic materials change color to yellow or brown at certain high temperatures over a length of time. it will be shown, And the ultimate form of degradation is when the plastic becomes charred and black.