Key Technology Research Of Fruit Bagging Machinery

From the 1990s, fruit bagging technology began to spread. Practice has shown that fruit bagging can effectively solve the problem that the production quality of fruit is not up to the level of consumer's satisfaction. As more and more areas of application of fruit bagging technology, bagging became a labor intensity work, and bagging machinery gradually became a hot point of orchard machinery research. The research of fruit bagging machinery is still in the start-up phase, but it is certainly that mechanical bagging will gradually replace the manual way. This design which aims to develop a new type of fruit bagging machine, which can stabilize the operation quality of fruit bagging, thereby improving the production quality of fruit, increasing the income of farmers, as well as reducing farmer's heavy bagging pressure in the short fruit-bagging time, has a high research significance and utility value.Design analysis and functional requirements analysis of the fruit bagging machine were done. According to design analysis, bagging machinery is divided into four functional module, and each function module is fitted a scheme for integrated design. Paper applied graphic topology theory, working on the core module—folding mechanism design, specified its structure. The functional requirements of the folding mechanism were analyzed, and four optimization targets and their optimization functions were created. On the analysis of the folding mechanism, VB kinematics simulation and optimization software was programmed. The folding mechanism modeling and simulation of virtual prototypes was done, the results of simulation were analyzed, and compared with the results of VB software, combining with physical prototype testing, and the design correctness of folding mechanism was verified.1) Fundamental research of fruit bagging machinery, and functional analysis and modular analysis were done in Paper. Bagging machinery in accordance with the function is decomposited to mechanical system and auxiliary system. The mechanical system in accordance with the functional module is divided into the bag-feeding, bag-opening and bagging-folding mechanisms; auxiliary system is divided into the drive system and control system.2) Graphic topology theory was applied for the design of core modules of bagging machinery—folding mechanism. The fundamental topology graph of folding mechanism constantly expanded to a better organization, and the topology of the graph was finally specified to a "Center seal program" type folding mechanism.3) The dimensions and the kinematic analysis of folding mechanism were analyzed and four optimization targets were set up. On this basis, folding mechanism simulation was programmed by VB optimization software. By the software, folding mechanism's motion simulation and optimization goals and results are shown in graphical and real-time dynamic data coordinates.4) Pro/E was used for virtual prototyping modeling of fruit bagging machines, and Pro/Mechanism was used for kinematic simulation. Combining with the simulation results of VB software and the experiment of physic model, the design correctness of the folding mechanism was verified.