【摘要】 针对机械振动引发机组式凹版印刷机导向辊失稳问题，对导向辊机械振动进行了分析，并提出一种包含局域共振单元与十字蹦床结构的复合隔振装置。分别对局域共振结构和十字型蹦床结构的加速度响应和振动传输比进行计算，从而确定隔振装置整体结构，并对隔振装置的模态位移、振动传输和振动损耗分析，结果表明：在186～222 Hz和328～2 000 Hz两个频段内，隔振装置具有良好的振动隔离性能。搭建导向辊试验平台对隔振装置进行试验分析，对比未添加隔振装置与添加隔振装置的导向辊结构之间的振动响应，证明隔振装置具有良好的隔振性能，达到了对机组式凹版印刷机导向辊抑振的目的。更多还原

【Abstract】 In this article, with focus on the instability of the unit-type gravure printing machine’s guide roller caused by mechanical vibration, the analysis is conducted on the guide roller’s mechanical vibration. A composite vibration isolator is proposed, which includes a local-resonance structure and a cross-shaped trampoline structure. At the same time, both the acceleration response and the vibration transmission ratio of the local-resonance structure and the cross-shaped trampoline structure are calculated separately, in order to determine the vibration isolator’s overall structure. Besides, its modal displacement, vibration transmission, and vibration loss are explored. The results show that the vibration isolator has good vibration-isolation performance in the frequency bands of 186～222 Hz and 328～2 000 Hz. Finally, a guide-roller experimental platform is set up, so as to conduct the experimental analysis on the printing machine; efforts are made to compare the vibration response between the guide roller’s structure without the vibration isolator and the structure with the vibration isolator. It is confirmed that the vibration isolator with good isolation performance is helpful to suppress the vibration on the unit-type gravure printing machine’s guide roller.更多还原