Kinematics Analysis And Simulation Study Of Key Components Of Acupuncture Machine

Needling machine,as one of the important equipment of needle-punching nonwovens process,has a significant impact on the product performance of needle-punching non-woven fabric.The 13th Five Year Plan for Textile Machinery puts forward that needling machine should complete the research of high-speed needle-punching,the modular design of needling machine,high-accuracy needle-punching and complete the key technical of intelligent controller.In order to achieve the abovementioned goal,focus should be laid on the kinematics research of the key part of needling machine and using the structure simulator to validate the reliability of the structure.In this paper,the author sets the needle plate as the research object,introduces the main structure and working principle of the needle plate,analyzes its kinematics parameter and tests the needle-force by a new research method.After that,the mode of needle-plate is classified by four parameters before being modelled.Finally,the finite element analysis software ANSYS Workbench is used to complete the research of the effect of physical properties on the physical performance of the needle-plate.After the simplification of the structure of the needling machine,the author considers the needle,the needle-plate and the needle setter as a sliding block and derives the acceleration,velocity,and displacement of the sliding block by the hypothesis that the needle frequency is 1200 times per-min and the needle depth is 20 mm.Then the data is translated and saved as XML doc which is used in the following steps.A new needle force test device based on LabView is designed.We use the fabric to penetrate the needle after the needle and sensor are fixed.And then the data is acquired and revised by the software.The result shows that by using the new needle force test device,the vibration force and the inertia force can be effectively avoided mixing into the test data,which is different from the traditional needle force test device.This paper analyzes the mainstream needle plate on the market,and the results conclude that the mainstream needle plate can be mainly divided into two categories according to stress type,which can be further subdivided into twenty types according to its size,needle density and materials.Subsequently,the model of the needle plate is built by using Auto Cad after the analysis and simplification of its structure.Through the use of ANSYS Workbench,the model is imported,the load of needle plate is set up,and the meshes generation is completed.After that,a static structural analysis of deformation,strain and stress of the needle plate during the needling process is carried out,which illustrates the impacts of stress type,size,needle density and materials of the needle plate on its physical performance.