| Now the cost of human resources is getting higher and higher,which makes the original labor-intensive production system based on labor gradually develop into an automatic industrialization system,which is also the case in the textile industry.At present,the cloth rollers produced by the loom in the weaving workshop are usually carried to the cart manually,and then the cloth rollers are transported to the cloth rack through the cart.Due to the high quality of the cloth roller,it is often very difficult for workers to carry the cloth roller and there are certain safety risks.With the continuous development of industrial automation technology,the traditional method of cloth roll transportation in textile industry,which is carried out by manual hand conveyer,is bound to be replaced by intelligent transportation.This topic is based on the school-enterprise cooperation project: "magnetic guided automatic dropping unmanned transport vehicle".In order to solve the problems of low transport efficiency,high labor intensity and high risk coefficient of manual cloth dropping in weaving workshop,an automatic cloth dropping trolley is designed and developed,which is composed of automatic cloth dropping mechanism and AGV trolley used for moving.The research is mainly carried out from the following aspects:(1)Analyze the relevant parameters of the weaving workshop,and design the mechanical structure of the vehicle according to the functional requirements to be realized.(2)Firstly,the drive unit and gear train structure of the AGV car are designed.Then,the drive unit and the drive unit of the automatic dovetailing mechanism are designed,and the relevant drive motor and steering wheel are selected.(3)Based on D-H method,the motion model of the center track of the cloth roller is established.Taking the height H and width D of the guide rail of the unilateral chain as the objective function,the constraint equation is determined through the interference collision analysis of the movement process of the cloth roller and the related geometric relations,and the optimization equation with double objective function and multiple constraint conditions is obtained.The objective weighting method is used to give certain weights to each objective and the MATLAB toolbox is used to solve the optimization equation,and the dimension parameters of the optimized chain guide rail are determined.The parameterized design and calculation model of the chain guide rail was established.By inputting the corresponding parameters,the automatic calculation of the chain guide rail and the shape parameters of the AGV body could be realized.At the same time,the user interface is designed,and the feasibility is verified by experimental test.(4)Finite element analysis was carried out on the optimized chain guide rail under different working conditions to verify its reliability.At the same time,the finite element analysis is also carried out on other key parts of the auto lopping car,such as car body and chain,which also verifies its reliability.The performance test of AGV doordropping car was carried out.(5)The interactive interface of chain guide parameterization design is designed,and the automatic calculation of chain guide and AGV body shape parameters can be realized by inputing corresponding parameters,and the feasibility is verified through the design example.(6)In the weaving workshop,the automatic cloth dropping car was tested for its transport performance,and the feasibility and safety of its work were verified. |
