HsCAE software was used to analyze injection molding defects of plastic molding products, Based on it, the cause of shrinkage and warpage in plastic molding products was proposed. Some conditions and technological parameters such as the fiber orientation, thickness, geometric figure and temperature of the part, the pressure maintaining and the design criteria were modified in order to solve the problem. The working process is stable, reliable and has good practical effect.

In order to meet the need of medicine packing industry for Mechanical Properties such as high speed and accuracy, the electronic granulation counter is developed. The counter consists of LED light source, double linear array CCD sensors TCD1209D, synchronously driving circuit for double linear array CCD based on CPLD EPM3064A, synchronously data acquisition card with A/D converter TLC 5510 of the high speed, and host computer. The test channel is 400 millimeter wide, the horizontal resolution is 0.1 millimeter, the driving frequency of linear array CCD sensors is 10 MHz and the vertical resolution is 0.3 millimeter, software binarization is effective for identifying the medicine tablets of different light transmittance. The experiments show the electronic granulation counter is accurate and reliable, counting speed is over 8000 per minute, and can distinguish the broken tablets and the overlap tablets.

In order to solve the problem of choosing vibration mode of the cylinder shell resonating density meter, this paper analysis the dynamics of the resonator by ANSYS. The modal analysis result shows that the transverse n=2 and n=3 all meet the requirement, the fluid-structure interaction result shows that the transverse n=2 is more sensitive to the changing of fuel density than n=3. Final analysis of the influence by temperature and pressure on the vibration frequency shows that the influence by pressure is very little which can be omitted, but the influence by temperature is remarkable and needs to be compensated. The conclusions and methods of finite element analysis can be used for resonant liquid density meter design.