Structural Design And Optimization Analysis Of Automatic Flipping And Unloading Prototype Of Cigarette Filter Rod

The development of China's tobacco machine industry is relatively late,and related equipment and technologies are mostly monopolized by foreign companies.In recent years,with the country's goal of vigorously promoting the equipment manufacturing industry,it is imperative to further develop the equipment manufacturing level of the cigarette machine industry.At present,while domestic cigarette factories import foreign equipment,there are also a large number of equipment that have not been automated,often requiring manual operation,low efficiency,and difficult to meet production needs.Aiming at the problem of manual unloading of existing filter rod forming machines,this paper designs and develops an automatic cigarette filter rod reversing and unloading machine to realize automatic loading,reversing and unloading,and recycling of empty turnover boxes.First of all,according to the equipment use site and functional requirements,clarify the movement requirements and structural design parameters.Through the TRIZ theory,the system analysis of the cigarette filter rod automatic flip disc unloader was carried out,and the development trend and design direction of the cigarette filter rod automatic flip disc unloader were clarified,and then the composition of the system was determined.Aiming at the design goals,the motion plan for realizing each function was determined.The structure of each part was designed according to the motion plan.At the same time,the key cylinder components were selected according to the use conditions.The main structural design of the prototype was completed.Secondly,by analyzing the factors that affect the turning speed,the relationship between the quality of the turning mechanism and the turning speed is obtained;the effect of the quality of the turning mechanism on the turning shaft bearing is furtheranalyzed,and the relationship between the dynamic load and the deformation of the bearing and the service life of the bearing is obtained;Using virtual prototype technology,the kinematics simulation analysis of the turnover mechanism was carried out,and the centroid trajectory and corresponding torque curve of the movement of the turnover mechanism were obtained.The analysis results provide a basis for the setting and structure optimization of the flipping speed of the unloader.Finally,after the quality comparison,the weight-reducing components in the turnover mechanism are determined,and the weight-reducing design is carried out using the topology optimization method.With reference to the optimization results,the topology optimization model was remodeled in consideration of structural rationality and manufacturability,and a finite element static analysis was performed to verify that it meets the strength and stiffness requirements.Through finite element modal analysis,the structural Stability and reliability.In the end,the mass of the flip mechanism was reduced by 10.262 kg,and the weight reduction ratio reached 14.6%,which effectively reduced the mass of the flip mechanism.