新型全电动式注塑机直拉式电动射移机构

采用射移丝杠安装于机架方式的全电动式注塑机电动射移机构，易造成推力块的力臂结构长度过长。当喷嘴顶 靠于模具时，由于过大偏载力矩的作用而产生上翘现象。针对性地设计开发了新型直拉式电动射移机构。该机构将注 射单元通过直拉式射移机构直拉于定模板上，大大减小了全电动式注塑机射移力系的封闭回路里出力机构的射移丝杠 中心线与机筒中心线的距离，使机架不再需要承受原有设计由于射移最终阶段喷嘴顶紧模具浇口产生的顶靠力，从而大 大改善了射移机构和喷嘴的受力情况，同时也简化了机架结构，进而减轻了机架的结构重量。

Dynamic Characteristics Analysis of Self-Synchronous

In order to study the influence of vibration parameters on the structural strength , the mathematical models wereestablished about the mode and harmonic response analysis of the self-synchronous vibration mill with the dual motors.and by means of the finite element ANSYS software. the natural frequencies and the corresponding vibration modes weredetermined by the simulation testing. It was discovered that the different damping ratios and harmonic exciting forces hadan effect on the amplitude and frequency of the resonance region. The research results indicate that the resonance regionof the vibration mill is in the region of the first and the second orders of the natural frequency, and the frequency rangeis about 40 -50 Hz. and the amplitude decreased as the damping ratios increased. but the amplitude increased as theharmonic exciting forces increased. and that the phase angles unrelated to the exciting forces. The theoretical basis maybe provided for the designer of vibration mill. and then improve the safety and reliability of the equipment.