Design On Automatic Barrel Sleeve Device For Double-Layered Outer Bags In Powdered Hazardous Chemical Packaging System

As the range of use of powdered hazardous chemicals in China continued to expand and consumption increased,the demand for powdered hazardous chemical packaging technology became urgent,requiring a fully automated production line for powdered hazardous chemical packaging to achieve continuous automation production.However,due to the easy accumulation of dust and static electricity during the packaging process of powdered hazardous chemicals,which could easily cause a series of safety hazards such as explosion and combustion,the development of automated equipment faced certain technical difficulties.In addition,in order to prevent moisture absorption of the material,the outer packaging often used the method of putting double-layer packaging bags into the packaging bucket and then filling the measured material into the packaging bag.However,the technology of putting the outer bag of the double-layer packaging bag into the bucket had not been successfully developed.Currently,the filling and measuring of this production line could use existing mature technology,while most of the double-layer packaging bag outer bags were manually put on the bucket online or put on offline and then sent to the production line manually.To meet the industry requirements of "unmanned factory" or "dark factory",this paper took the automatic barrel sleeve device for double-layered outer bags in powdered hazardous chemical packaging system as the research object and studied its working principle and functional structure.The main research contents were as follows:Firstly,in accordance with the functional requirements of the outer bag loading process,a system-level design plan was proposed,and the outer bag loading function was decomposed into six functional modules,namely bag feeding,bag opening,bag supporting,bag pulling,and bag pressing.Each sub-function was analyzed from the perspectives of behavior,structure,and constraints,and alternative solutions that met the requirements were proposed and evaluated.Ultimately,an optimized solution that satisfied the requirements was obtained.Secondly,based on the overall technical scheme,the detailed design plan of the device was obtained using the principle of functional mapping.Then,the structure of each mechanism was analyzed separately,and the three-dimensional structure of the outer bag and bucket device was designed.The engineering software Solid Works was used to complete the construction of the 3D model.Thirdly,using ADAMS software,kinematic analysis was performed on the supporting bag mechanism and bag pressing mechanism to determine their motion trajectories.Then,ANSYS Workbench software was used to conduct static analysis on the supporting bag mechanism to verify its strength and stiffness,and to obtain its natural frequency and corresponding vibration modes.This information was used to estimate the dynamic performance of the entire structure.The language used in the translation is more technical and formal.Fourth,the entire mechanical motion was systematically reviewed for potential safety hazards,and comprehensive safety protection design was implemented for the device based on the requirements of hazardous chemical production safety.The automatic barrel sleeve device for double-layered outer bags in powdered hazardous chemical packaging system designed according to the above ideas was constructed into a physical prototype for experimentation.After testing and debugging,the device exhibited characteristics such as safety,reliability,and simple structure,meeting all the required performance indicators.