宽皮柑橘贮藏用薄膜包装机的设计与试验  

Design and experiment of film packaging machine for Citrus reticulata

作　　者：陈红[1,2,3] 马露畅 万琛 郑杰 史义闯 周健 Chen Hong;Ma Luchang;Wan Chen;Zheng Jie;Shi Yichuang;Zhou Jian(College of Engineering,Huazhong Agricultural University,Wuhan 430070,China;Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River,Ministry of Agriculture and Rural Affairs,Wuhan 430070,China;National R&D Center for Citrus Preservation,Wuhan 430070,China)

机构地区：[1]华中农业大学工学院,武汉430070 [2]农业农村部长江中下游农业装备重点实验室,武汉430070 [3]国家柑橘保鲜技术研发专业中心,武汉430070

出　　处：《农业工程学报》2020年第23期317-323,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：中央高校基本科研业务费专项基金资助项目(2662019PY064);国家现代柑橘产业技术体系专项(CARS-27)。

摘　　要：宽皮柑橘在入库贮藏前需要用薄膜袋包装以延长货架期,为了代替人工操作实现自动包装,该研究打破传统的套袋包装模式,采用上、下双层膜,结合热封切机构,设计了一种新型的4边封口制袋包装机。该机主要由双排进料装置、送膜装置、封切升降装置、组合封切装置组成。利用封合后的前膜带动后膜的方式送膜,避免了薄膜撕裂;采用半球形结构承载宽皮柑橘,可实现多排多列果实的连续制袋包装;通过ADAMS软件对以曲柄滑块机构为主体的升降装置进行运动学分析,配合内置弹簧刀架中弹簧的压缩与放松,在升降装置不停止的情况下,研究电机转速与热封时间的关系,确定电机转速为20 r/min。以温州蜜柑为对象进行试验,结果表明,宽皮柑橘薄膜包装机的包装率为98.6%,优质率为93.3%,包装效率为97.6个/min,实现了贮藏用果实的自动套袋包装。研究结果可为宽皮柑橘贮藏用薄膜包装机的研制与优化提供参考。Citrus need to be packaged in the film bags before the storage,particularly on the type of Citrus reticulata.The water permeability of thin film is normally used to monitor the water evaporation and gas composition inside the package,aiming to extend the long shelf life of Citrus reticulata.In this study,a novel automatic packaging machine was proposed for the storage of Citrus reticulata,using the upper and lower double-layer films,combined with the heat sealing and edge cutting mechanism,in order to replace the traditional bagging packaging mode in the manual operation.A four-side sealing bag making/packaging machine was also designed for easy operation in the daily life.Six kinds of devices mainly included a multi-row feeding device,a Citrus reticulata conveying device,a sealing and cutting lifting device,a combined sealing and cutting device,a film feeding device,and a residual film collecting device.The sealed front film was used to drive the back film in the feeding of film.The relationship between the tensile strength of films and the film width was obtained in the pre-experimental analysis.The optimal value of film width was selected to avoid the film tearing during the working process.The hemispherical loading structure can be used to realize the continuous bag packaging in multiple rows and columns for Citrus reticulata.The multi-row feeding device was integrated with the various sensors and motors,thereby to implement the flip of movable plates.Two rows of citrus were operated in one feeding stage.The chain transmission and support were adopted in the citrus conveying device to transport the citrus among each station.The combined sealing and cutting devices were equipped with two cross-cutting knives and five longitudinal cutting knives,where simultaneously sealing and cutting two rows and four columns of citrus.Its built-in spring knife holder can ensure the tightness of hot cutting knife and the film during the sealing and cutting process.A connection device was set to provide the positive pressure t

关 键 词：贮藏 包装 热封 薄膜 柑橘 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]