Mixed Reality Development Of Injection Molding Process Incorporating Mold Flow Analysis Results

In the context of the booming development of intelligent manufacturing,it is an important research topic to achieve operations combining virtuality and reality for manufacturing equipment.Based on the BABYPLAST 6/10P micro injection molding machine,an injection molding process operation guidance system are developed,which can be applied to mixed reality glasses,and a method is proposed to integrate injection molding simulation analysis results into mixed reality.The system has a good combination of virtual and real effects.It can intuitively and effectively guide the operation process.The main work and achievements are as follows:(1)The operation and injection process of the micro injection molding machine are analyzed,and the basic requirements for developing an operation guidance system are determined.The system need to integrate virtual information,include mold flow analysis results,and achieve precise virtual and real positioning and convenient operation.HoloLens2 glasses are selected as the mixed reality platform,and a development plan of MRTK+Vuforia+Unity3D are proposed.(2)The existing spatial positioning techniques in mixed reality are analyzed,and a comprehensive positioning method of spatial mapping positioning and labeling positioning is adopted.It ensures the accuracy and stability of virtual object positioning,and reduces virtual object drift phenomenon,and improves positioning efficiency.A comprehensive virtual and real occlusion scheme using pre modeling and spatial calculation has been used,improving the accuracy of virtual and real occlusion,and increasing the realism of virtual objects.(3)After the 3D animation of the injection molding simulation analysis results is processed,a solution is proposed to address the flickering problem of the exported 3D animation.The smooth 3D animation is obtained through segmentation and reorganization,and add it as a virtual object to mixed reality,so that it can be registered with the corresponding physical object.Finally,the injection molding simulation analysis results in the form of 3D animation are presented in the real scene of injection molding by combining virtual and real worlds.(4)A three-dimensional animation that combines virtual and real operations has been created for the main operation process of the injection molding machine,and on this basis,text prompts and hand eye interaction functions have been set up,allowing users to interact and learn the operation process through both hands and eyes,making the system real-time and highly interactive,and improving the degree of freedom of both hands.(5)The developed injection molding machine operation guidance system are tested,and the results verify the system’s fast and correct positioning function for virtual objects,and present the correct occlusion relationship between virtual objects.It also demonstrates the synchronous presentation effect of the 3D animation of injection molding simulation analysis results in the real injection molding scene,with smooth interaction and stable operation of the system.This system provides a reference for the application of mixed reality technology in manufacturing equipment maintenance.