In recent years,rope buckle is widely used in the field of clothing,but its handmade efficiency is low,and there are some problems such as uneven size and quality,so the automatic forming of rope buckle needs to be studied in detail.In the common production method,whether it is manual knotting,sewing knotting,mechanical knotting or ultrasonic knotting,it is difficult to complete its automatic forming needs.On the contrary,from the injection molding of the rope buckle to the use of cemented buckle to the forming of the rope buckle is a very suitable and meet the requirements of automation forming method.In this paper,the mechanical structure and control system of automatic forming machine of rope buckle are designed by the forming way of cemented buckle,and the reliability of the finished product of rope buckle is analyzed.The main contents are as follows:(1)Forming analysis and process design of rope buckle.According to the research purpose of the rope buckle,the forming demand of the rope buckle is analyzed.Design of rope buckle forming process,mainly includes rope material template clamping,sol heating,sol coating,clamping and fastening form and template replacement,and this is a detailed description of the rope buckle forming way.(2)Rope buckle forming machine structure design and control system design.Using the gluing and gluing process of the rope buckle in the forming process,the motion mode of the transmission parts and the position control and motion control of the main gluing module and the gluing module are studied,and the control analysis of the whole automatic forming equipment is carried out.Finally,the scheme can be realized.(3)The extended-finite element method of ABAQUS and the cohesive force model were used to simulate the tensile fracture mechanism at the knot of the rope.According to the material parameters obtained in the paper,the damage phenomenon at the knot of the rope buckle under the action of tensile load is analyzed,and the crack propagation phenomenon of the adhesive layer and the degumming phenomenon of the adhesive surface are obtained.(4)Uniaxial tensile test was carried out on the rope buckle prepared at different temperatures.According to the curves of force and displacement obtained,the causes of the differences were analyzed,and the forming process of the rope buckle was optimized.The simulation is compared with the actual tensile test to verify the feasibility of the simulation analysis. |