关键词: 采茧机器人, TRIZ理论, 结构设计, 有限元

Abstract: Aiming at the problems of poor quality and low efficiency of the cocoon picking machine, a cocoon picking robot was designed based on TRIZ theory. By using a nine-screen analysis method, component analysis method and causal axis analysis method, the root causes of low efficiency and poor quality of cocoon picking machine were obtained, such as the existence of cocoons, inadequate adaptability and low maintenance efficiency of the ejector rod. The technical contradiction method, physical contradiction method and object-field model analysis was used to solve the analyzed problems. The actuator, attitude converter, profile press and cocoon picking device and other key components were innovatively designed. Combined with the actual working conditions, the whole machine design of the cocoon picking robot was completed. The deformation and dynamic response of cocoons were analyzed by means of finite element simulation software. The results show that the maximum value of total deformation, equivalent stress and equivalent elastic strain of cocoons can be reduced by 96%, 91.7% and 88.2%, respectively by using the copycat pressing head to pick cocoons.

Key words: cocoon picking robot, TRIZ theory, structural design, finite element