Study On The Drum Bag Type Packing Line Of Full Automatic Ton Bag

packaging line of full automatic drum bag type ton bag is a kind of automatic packaging equipment which can automatically weigh and fill the powder and granular materials into the ton bag according to the requirements.It is widely used in chemical industry,fertilizer,food,medicine and other industries.According to the research on the present situation of ton bag packaging at home and abroad,it can be seen that the full-automatic ton bag packaging is the development trend of ton bag packaging.The task of this project is to realize the functions of automatic bag opening,bag supplying,bag covering,bag clamping,weighing and filling,bag mouth shaping,conveying,heat sealing machine,automatic sealing,full bag shaping,stacking and automatic control of the packaging line,and the packaging process is unmanned.At last,the automatic ton bag packing line with simple structure,high degree of automation and good safety is designed.For the research and design of the weighing unit of the packaging line,the factors that affect the accuracy of the electronic quantitative scale are analyzed.The mathematical model of the factors that have a greater impact is established and compared.The quantitative analysis is carried out.The determination of the weightloss measurement method can not only ensure the accuracy but also help to improve the weighing speed.The range and accuracy level of the weighing module are selected.A three-stage feeding model is established,and the influence of the size of the unloading valve on the weighing is analyzed.The optimal bin size and the size of the discharge port are determined through the test comparison.In order to realize the automatic bag supply,the bag structure adopts the domestic innovative roll bag,i.e.the bag is connected end to end and coiled on a 300 mm diameter cylinder core with two-wire rope.One roll can roll 120-150 bags.The innovation of bag form is the premise of realizing the high-speed automatic bag supply.In this paper,the structure of the main functional parts of the packaging system is designed in detail,and the working principle is described.The principle analysis,stress analysis and the selection of purchased parts of several key parts are described.This paper expounds the feasibility of automatic bag feeding and bagging of ton bag line.The function of the auxiliary unit is briefly described.For the components with large load-bearing,the beam structure of the supporting part of the palletizing conveyor is analyzed statically and modal by using the threedimensional software Autodesk Inventor,and the beam structure is optimized to verify its safety.It is necessary for the automatic packaging line to realize the automatic operation control system.According to the function of the packaging line,the control system is divided into three parts: pneumatic control system,electrical control system(including weighing control and packaging control),and vacuum control system.The composition diagram of the control system is drawn.The system composition of the weighing control system and the packaging control system is studied.The weighing control system is based on the weighing controller ME2000 A,which can control the action of each actuator according to the weighing logic according to the received weight signal.The packaging control system is based on the PLC control system,and controls the actions of each actuator according to the packaging process.Design the pneumatic and vacuum system of the packaging line,select the appropriate pneumatic control components,draw the pneumatic and vacuum schematic diagram,and complete the design of the control part of the packaging line.