Simulation Analysis And Optimization Design Of Metal Zipper Machine Based On Virtual Prototype Technology

In the clothing accessories industry,although the zipper is small,it has a large market value because it is indispensable.However,Chinese zippers account for a small proportion in the high-end market.On the one hand,the Chinese zipper industry generally encounters serious problems in vibration and noise of zipper production equipment,and the zipper performance is unstable and dispersible,resulting in uneven zipper quality.On the other hand,the lack of flat pull strength of Chinese zippers is an important reason for the small share of domestic zippers in the middle and high-end market.In the production process of metal zippers,the Zipper machine is the core machine in all mechanical equipment,and the quality of its work directly affects the performance of the final zipper.Therefore,this topic is based on the development process of modern mechanical equipment,widely using virtual prototyping technology and finite element technology,in the overall guarantee of the quality of the new generation of metal Zipper machine production products,while shortening the development cycle,in order to reduce the vibration and noise of the Zipper machine device,the quality of the zipper product has been improved.Firstly,without affecting the dynamic characteristics of the Zipper machine,the Zipper machine is simplified into five major institutions,the CREO software is used to establish a three-dimensional model,and then imported into the ADAMS to establish a virtual prototype model of the Zipper machine that expresses the kinematics.The Zipper machine is used for kinematic analysis to understand the kinematics of the main mechanism of the Zipper machine.Secondly,on the basis of kinematics analysis,the dynamic simulation analysis of the punching mechanism of the core mechanism of the Zipper machine is carried out.By analyzing the speed and acceleration curve of the punching needle,the rigid impact and flexible impact existing in the mechanism can be found.At low speeds,the impact force is not obvious,but the working speed of the exhaust Zipper machine is generally high,and the impact force will become very large,which becomes the main cause of excessive noise and vibration generated by the Zipper machine.In order to reduce the vibration of the mechanism,the cam profile curve in the mechanism is optimized and the optimized mechanism is dynamically verified.Then,based on the metal plastic forming technology,the forming process of the element is simulated,which paves the way for the further optimization of the mold related to the element forming.Finally,in order to solve the problem of insufficient strength of the domestic zipper flat pull,the ABAQUS software is used to mesh the cloth,the ribs and the fastener elements,define the material properties,determine the boundary conditions and apply the displacement speed,and complete the establishment of the zipper finite element model;The ABAQUS display algorithm was used to analyze the nonlinear contact between the element and the element and between the element and the tape.The numerical simulation results of the zipper pull strength were obtained and compared with the experimental data.The comparison results were in good agreement.Based on the above analysis,the sensitivity of the tooth height,slice thickness,thickness and pressure of the element are analyzed.The results of the simulation analysis provide a theoretical reference for the further structural optimization of the fastener element.Provide guidance for the optimization of the mold of the Zipper machine forming mechanism.