Most plastic products are injection molded through plastic molds. When designing the structure of plastic parts, the general principles of product structure design should be followed. In addition, plastics also have some basic design requirements, such as material thickness, ribs, rounded corners, etc.
一.Thickness of plastic parts
The material thickness of plastic parts is the most basic design requirement for plastic parts and is closely related to the outer dimensions of the plastic parts. Generally speaking, products with larger outer dimensions have larger material thicknesses. The thickness of plastic parts determines the strength, weight, assembly, etc. of the product.
(1) The thickness of plastic parts can be selected according to the different materials and the size of the product appearance. The range is generally 0.6~6.0mm, and the commonly used thickness is generally between 1.5~3.0mm. Recommended thickness values for commonly used plastic parts, small products refer to the maximum external dimension L<80.0mm, medium-sized products refer to the maximum external dimension L<200.0mm, and large products refer to the maximum external dimension L>200.0mm.
(2) The thickness of plastic parts should be as uniform as possible, otherwise defects such as uneven filling of plastic parts, deformation, and local dents may occur. If the thickness of plastic parts is uneven due to structural requirements, the transition should be gradual to avoid excessive changes in thickness, causing stress concentration or local dents that affect the appearance and structural strength of the product.
