Structural Performance Analysis And 0ptimization Of Large Printing Machines

With the improvement of people’s aesthetic ability in modern life,the requirements for printing equipment are also constantly improving,and the textile industry pays more and more attention to the research of new digital printing machine.The frame components,guide belt components and beams and jet trolley components in the digital printing machine are important bearing parts and transmission parts in the digital printing machine,and their performance analysis and structural optimization help to improve the overall performance of the digital printing machine.In this paper,HyperMesh is used for meshing and Optistruct solvers,and the component structure of digital printing machine is studied by finite element method,statics,dynamics and optimization design,and the specific work is as follows:Firstly,the structural composition and structural characteristics of the digital printing machine are analyzed,and the geometric model of the digital printing machine is established and simplified with the help of Solidworks software,and the appropriate grid type is selected in HyperMesh to divide the component structure in the digital printing machine into unit meshes,and the finite element model of the printer is established.At the same time,the rationality of the simplification of the connection method of the digital printing machine is verified,the optimal connection simplification method is obtained,and the boundary conditions and load conditions analysis of the actual work of the printing machine are completed.Secondly,the Optistruct solver is used to perform static analysis of the frame components,guide belt components,beams and printing trolley components in the digital printing machine,and then modal analysis is made on the whole digital printing machine.The stress contour imag,deformation contour imag,modal frequency and modal mode of each component structure are obtained,and the weak links of each component structure of the digital printing machine and the frequency prone to resonance are analyzed.Finally,according to the static analysis results,the corresponding optimization design of the frame assembly,guide belt assembly and beam and the structure of the printing trolley component of the digital printing machine are optimized,the appropriate grid element is selected as the design variable in the optimization design process,the displacement response or volume fraction response of the structure is used as the constraint condition,the size optimization design is done for the wall plate in the frame assembly,and the topology optimization design is made for the shaft head and beam in the guide belt assembly and the beam structure in the printed car assembly.The optimized wall panels are reduced by 5 mm,four stiffeners are added to the guide shaft head,and the beam structure shape is changed.After the optimization design is completed,the performance parameters of each component structure of the digital printing machine before and after optimization are checked and analyzed to verify the rationality of the optimization.The optimization results show that the structural performance of the digital printing machine before and after optimization is not much different,but the weight of the overall structure of the digital printing machine drops by 137.9kg,the natural frequency change of the overall structure is small,the stress distribution of the optimized component structure is more uniform,the utilization rate of the material is higher,and finally the purpose of structural lightweighting and overall performance enhancement is finally achieved.