* Identification
Part identification is usually set on the flat internal surface of the product and is convex; choosing a face that may be consistent with mold opening direction to set identification to avoid pulling.
* Molded accuracy
Due to the inhomogeneity and the uncertainty of shrinkage during injection molding,the precision of moulding is obviously lower than that of metal parts.So the dimensional tolerance of mechanical parts cannot be applied mechanically and appropriate tolerance requirements should be chosen according to the standards.
* Molded deformation
Improving the rigidity of injection molding product structure to reduce deformation.Trying to avoid slabbed construction; setting up reasonable upsiding down edges, punch-cum-blanking structure and rib.
* Snap joints
1. Multiple snap joints can be used at the same time when designing them so that the whole device can still operate when there is damage on individual snap joint, thus its service life can be increased. It is also thinkable that increasing fillet to improve the strength.
2. The tolerance requirement of relevant snap joints dimension is very strict; too many backoff locations will cause the damage on snap joints; on the contrary, too few will cause loose parts and ungovernable assembly position.
* Welding (hot plate welding, ultrasonic welding and vibration welding)
1. Welding can improve the connection strength.
2. Welding can simplify product design.
The article comes from China injection mold manufacturer - Mold Best Assurance Company Limited, website is www.mbamoldanddesign.com
