Research On Improvement Of Feeding System Of Automobile Switch Assembly Production Materials

In view of the short life cycle of the automotive electronic switch and the high degree of personalized product,the characteristics of multiple varieties and small batches and frequent production changes in the assembly production are easy to generate the line edge inventory and the tail material retention.Problems such as material management confusion.This paper adopts the reverse push planning principle,combs the logic from the material demand end to the supply end,designs a punctual delivery model that combines the push and pull production control ideas,And implement the corresponding automation equipment transformation to assist the flow of materials.The goal is to shift from guaranteed supply to efficient supply and increase inventory turnover by reducing line inventory and improving inventory turn over.The main research contents of this paper include the following aspects:(1)From the perspective of effective supply of materials,analyze the characteristics of automobile switch assembly parts,finished products and production characteristics,clarify the flow direction of material flow,identify the problems in the distribution bottleneck and material supply process,and propose the material feeding improvment requirements.(2)Improve the implementation of basic planning from four aspects:use PFEP planning logic to improve the basic data;for the characteristics of automotive electronic switches,select the three dimensions including value,demand fluctuation and versatility to classify materials as different feeding methods Selection basis;standardization,unitization and generalization design of material feeding packaging,laying a standardized distribution basis;designing line-edge racks that meet different specifications of container to meet line storage requirements.(3)Based on the time zone distribution method promoted by the production plan,combined with the thought of JIT production system,the actual demand-driven material distribution model is established.The division and arrangement of the operation plan were studied,and the timing relationship and trigger mode between the materials picking,distribution and shipping in the model were designed.(4)According to the actual needs of the assembly workshop,the material delivery system is planned,which content includes equipment selection and transportation control system planning,and multi-AGV static one-way path planning based on undigraph for driving route by Dijkstra algorithm,plan the material feeding transportation system,and choose AGV with freight elevator as the automatic delivery delivery vehicle to improve the standardization and efficiency of distribution operations,to achieve material handling of AGVs across floors.(5)According to the distribution model and the AGV distribution system designed in the paper,the improvement of material feeding is implemented.The daily production plan is split,combined with real-time production information feedback,to form an execution document,to guide the sorting and distribution of materials and other feeding operations,and to transport materials from the warehouse to the production line through the AGV.