Modeling And Simulation Analysis Of Motion Characterastics For The Clamping Unit Of Injection Moulding Machine

Double-elbow clamping unit has been used extensively in the injection mould clamping system, because it has many advantages, such as big rigidty, high overload ability, good motion characteristics which can meet with the requirements of injection molding process,and it can be self-locked. All of these advantages can satisfy the safe, reliable and energy-saving require-ements for the institution. While servo pump system with its high accuracy, high dynamic response speed, low noise and energy-saving is more and more applied to the hydraulic system of injection molding machine.there are many papers about double-elbow clamping unit both at home and abroad, yet most essays base on mathematics and mechanics, through theory and experience method analysis the statics and kinematics for it. Because of the complex working conditions for double-elbow clamping unit, the dynamic characteristics of it directly impact on the quality precision and production efficiency of the products even the molding machine performance. Therefore, it is necessary to carry out their dynamics and kinematic analysis and research.This paper using three-dimensional design software PRO/E established the 3D parts models for WK400 injection mould clamping system and carried on the virtual assembly and finaly import to dynamics simulation software ADAMS, in ADAMS/View, we added restrictions and imposed driving force to the institutions, established its dynamic model. In AMEsim established the hydraulic system simulation model that servo_pump system drives the injection mould clamping system.Through AMEsim and ADAMS joint interface, established the clamping unit mechanical-hydraulic united simulation model, complete the simulation calculation and measurement of the clamping hydraulic cylinder and active moulding board's displacement and speed, the clamping force, transmission ratio, equivalent quality, elbow liver force, node friction, curve elbow Angle and hydraulic system pressure, flow parameters. At the same time, through experiment on the institution,we measure the line and angular displacement and motor speed, internal meshing gear pump outlet pressure parameter. Comparing and analysis the results curves measured by the simulation and experiment, Comprehensively, grasped the motion characteristics for double-elbow clamping unit, and comprehensively understand the pressure and flow variation characteristics in the process of combining a model. For CNC servo pump system have a deeper understanding. This pater provides a new method analyzing motion characteristics of double-elbow injection mold machine.