Design And Dynamic Analysis Of The Actuator Of BLT4Artificial Grass Tufting Machine

Artificial Grass Tufting is a large Mechanical&Electrical Combination System, and the main component of tufting machine generally consists of host, feeding system, needle bed, mobile systems, knitting, shearing, base cloth feeding system and control system. Using spindle rotation as the input of actuator (tufted, cut pile), the flocking movement is composed of tufting needle and knitting hook and cutter’s cutting pile for the output.Multi-group of multi-link actuator of tufting machine drove by super long spindle, led to its high synchronization requirement, is one of the core components of the tufting machine. The pros and cons of its performance has a decisive influence on the production quality and production efficiency.This paper is based on the research and development of transverse project BLT4CNC complete sets of equipment (Artificial Grass Tufting), research with the actuator of4m wide tufting machine, that is, knitting and cut pile, specific research contents as follows:(1) To master the working principle of tufting machine, tufting process and mechanism, and understanding of the structure of the tufting machine, parts function, working parameters and function module;(2) According to the existing tufting machine entity, establish simplified mechanical model by SolidWorks, with the aid of interface file, import the mechanical model into the kinematics simulation software ADAMS, analysis the kinematics characteristic of multi-group of multi-link from the angle of multi-body dynamics, mainly include travel speed ratio coefficient and the transmission Angle and other important parameters, and rigid-body dynamics analysis of crank,linkage and handle;(3) According to the impact of the execution of the linkage in knitting and shearing movement on the tufting process, optimize suitable executive linkage for the machine. The Tufting process of tufting machine is mainly determined by the trajectory of the implementing agencies, in particular, the smooth realization of the Artificial Grass Tufting’s flocking and shearing actions mainly depend on the coordination of pin, hook, knife, comb, therefore, reasonable matching phase of some significance to improve the production quality and efficiency of Artificial Grass Tufting. This paper mainly focuses on the coordination design of the hook and knife. Designed adjustable length of rods, as the design variables in the process of parameter optimization, analysis hook knife and linkage in the ADAMS from the angle of multibody dynamics. First, optimize the movement characteristics of hook (back and rest, etc.), and then, through the adjustment of the length of the parts whose length variable (design variables), to make higher efficiency of the flocking and cut pile system under the condition of good lawn quality.