Breast shield mold design based on UG

Breast shields are composed of complex curved surfaces. Outer surface requirements are high, there must be a smooth transition between different curved surfaces. There are flat cover, horn cover, and circular cover structures. These three structures are connected through middle circular tubular structure and have different opening directions, as shown in Figure 1. Core of trumpet cover and core of central round tube of plastic part are integrated into one piece, side surfaces of flat cover are connected to central round tube of plastic part, and cores of the two are connected by insertion. Bottom of circular cover is connected to circular pipe in the middle of plastic part through a section of circular pipe. There are 4 buckles evenly distributed on inner wall of circular cover. These 4 buckles need to be demoulded using an inclined push mechanism.

How Volkswagen Makes Seat Guards

Seat trim material is PP/PE-TD20, melt flow rate is 2 g/min, density is 1.05 g/cm3, tensile yield strength is 19 MPa, flexural modulus is 1 500 MPa, and melting temperature is 165 ℃ . PP material has characteristics of high flow rate and easy molding, but its shrinkage rate is large, it is easy to produce shrinkage holes, dents and deformation. PP has a large heat capacity, and if mold temperature is too high during injection process, it is easy to warp and deform molded plastic part; if temperature is too low, it may cause uneven gloss or defects such as weld lines. Recommended process parameters for plastic part molding are as follows: injection temperature 180~230 ℃, injection pressure 50~80 MPa, mold temperature 20~60 ℃.

Car front bumper mould

Front bumper of a car is one of the most important exterior parts of a car. It must not only have sufficient strength and rigidity, but also serve as a buffer and protect car body in a collision accident. It must also pursue harmony and unity with car body shape, achieve its own lightweight. In order to achieve this purpose, current front bumper body of a car is made of plastic, commonly known as plastic bumper, which is injection molded by an injection mold.