Structure Design And Mechanics Performance Analysis Of The Injection Molding Manipulator

With the development of plastic industry,supporting the use of injection molding and injection molding machine manipulator to become the necessity of developing industry.Production efficiency depends largely on injection molding machines working efficiency of the manipulator,the current most injection enterprises still adopt pneumatic manipulator,uniaxial plastic injection,not very good to meet the needs of injection development of enterprise,large-scale injection molding enterprise gradually full servo drive, multi-axis injection manipulator used in production.Based on the above consideration,this paper studies focused on five axis servo injection molding structure design and mechanical properties analysis of the manipulator.Compared to the current domestic common injection manipulator,in this paper,the design of the manipulator has the following characteristics:structure design,the manipulator beam and cantilever beam adopts thin-walled high strength aluminum alloy material,light,high speed,less noise;Manipulator arm before and after using the principle of double festival times speed,with the method of nested inside and outside the arm,can not only improve the efficiency of the manipulator and reduce the overall height of the manipulator;Of each axis movement of the manipulator adopts ac servo motor and speed reducer drive way,increase the speed of each axis movement,enhances the stability of movement;lead and pull has adopt high torque synchronous belt transmission,idler wheel instead of the traditional ball screw drive,solved the noise problem,adopt gear rack running at a high speed to overcome its easy to produce resonance and wear when rotating at the bad effects.Mechanical performance analysis,using the ANSYS finite element analysis was carried out on the manipulator,according to the analysis results,the topology optimization function of ANSYS to improve the structure of the manipulator,puts forward three kinds of topology optimization,the structure optimization of beam,the structure optimization of the beam,beam and cantilever beam structure optimization.After analysis and comparison of comprehensive optimization of damping effect is best,the biggest amplitude of three degrees of freedom are greatly reduced,the x direction amplitude fell by 40%,a 87% drop in y direction amplitude, direction amplitude fell by 76%,improve the dynamic performance of manipulator and reduced the manipulator in the working process of the vibration.Specific research process is as follows:First of all,according to the injection molding working principle and technical index of the manipulator,puts forward the design requirements,the design scheme is determined,according to the design scheme,using SolidWorks to design the structure of the manipulator parts,mechanical structure design part of the work done.Secondly,by using the ADAMS to design of manipulator kinematics simulation,to obtain kinematic parameters of the manipulator,test movement of the manipulator can satisfy the requirement of design.Again,using the ANSYS finite element analysis was carried out on the robot hand, through the statics analysis,test whether manipulator structure stiffness meet the job requirements,through the dynamics analysis,the vibration of the inspection robot is in line with the job requirement.Finally,according to the results of finite element analysis, topology optimization function of ANSYS, for the topology optimization design of the key components of the manipulator,improve the vibration characteristic of the manipulator.Finally completed the injection mechanical model, and verify the rationality of the model,the finished injection structure of manipulator design work.