自动重袋包装机设计

自动重袋包装机具有自动取袋、自动开袋、自动夹袋、自动充填等主要功能以及其他辅助功能,整个工序模仿人工套袋过程制定,并配套整形袋口装置使其在装袋完毕后能无缝对接折边机进入缝包机缝包.其中取袋及开袋等关键动作均由吸盘完成.     

食盐小包装机自动取袋、套袋装置的研制

食盐小包装自动取袋、套袋装置采用真空抓取技术,实现食盐小包装机自动取袋、套装功能。论文介绍了该装置的结构原理及气动系统的设计、选型。     

直角坐标机器人瓶坯装箱生产线控制系统

为了对塑料瓶坯进行自动整理、码放和装箱,开发基于直角坐标机器人的瓶坯装箱生产线控制系统。该控制系统使用可编程控制器通过CANOPEN总线控制3台伺服电机和其它执行单元,达到瓶坯的排列输送以及码放装箱的功能。文章详细的描述整个控制系统的程序框架结构,重点讲述可编程控制器通过CANOPEN总线控制3台伺服电机完成瓶坯的输送以及码放的过程。     

以可靠的技术推动中国包装行业的发展——访北京大森长空包装机械有限公司副总经理李浩原

1995年生产了国内第一台高精度微机控制枕式包装机; 1997年生产了国内第一台往复端封枕式包装机; 1998年生产了国内第一台热风双内循环节能高效热缩炉; 2000年生产了国内第一台伺服控制小型枕式包装机; 2004年生产了国内第一台三轴交流伺服控制大型枕式包装机; 2009年生产了国内第一台全自动袋面装箱机; 2011年生产了国内第一台全自动容器面装箱机.     

PLC在液压站控制系统中的应用

可编程控制器是继电器控制和计算机控制出上开发的产品,逐渐发展成以微器处理为核心把计算机技术、自动化技术、通信技术融为一体的新型工业自动控制装置。文章应用西门子公司生产的可编程控制器S7_300系列PLC,实现液压站自动操作控制系统,而且可以实现液压站群的集体控制。该系统充分利用了可编程控制器(PLC)控制功能。使该系统可靠稳定,时期功能范围得到广泛应用。     

汇川MD380M主轴伺服控制器在胎面裁断中的应用

文章介绍了国产的可编程控制器(PLC)和伺服控制系统在复合压出的定长裁断装置中的应用,该装置以PLC为控制核心,使用光电编码器来计长。在此基础上通过触摸屏来自由设定长度并显示实际的长度值。该系统通过PLC和伺服控制器共同完成对于裁刀的控制,实现了高精度的定长裁断功能,在实际的复合压出生产线中应用取得了良好的效果。     

全自动编织袋包装机的研发

文章介绍了一种适用于编织袋的全自动包装机的研发背景、研发思路、工作流程及关键技术,并针对不同模块间的对接方案、缝包前的自动理袋技术、灌装完成包装袋的抱夹及移动技术、拍袋装置、自动剔除装置等关键机构进行了介绍。文章对该全自动包装机的灌装速度进行了计算,并对计量精度及套袋成功率进行了测试统计和结果分析。     

PLC在设计啤酒次品回收机中的应用

针对当前啤酒次品回收的自动化程度低的现状,设计了全自动的啤酒次品回收机.该机电气控制部分包括主回路和控制回路,主回路由2台电机提供动力;控制回路由过程控制、液位显示与控制和清洗控制回路等构成.本设计采用可编程控制器(PLC)来实现该机过程控制,并运用顺序设计法设计出比较完善的电气控制梯形图.提高了自动化程度.该设计装置若投入生产.可以改变目前国内啤酒行业靠传统手工回收次品的现状,自动完成啤酒生产中的次品回收.     

全自动塑料袋包装机的研发

基于国内外包装机产品的现状及潜在的市场需求,顺应高生产率、自动化、单机多功能流水线的技术发展趋势,针对粮油、饲料生产企业用同一设备实现对不同物料进行包装生产的需求,研发一种适用于粮食、饲料(如大米、杂粮、虾料等)及其它颗粒料的塑料袋全自动包装机是发展的趋势。文章通过对自动取袋机构、上袋夹袋机构、称量机构、热封机构以及输送机构等多项专利技术的研发,开发出具有非真空包装及真空包装一次封口等功能的塑料袋全自动包装机。     

浅谈塑编袋包装线的改造

介绍了江西盐矿有限责任公司为适应市场需求，针对PE袋的包装、封口要求，对现有包装线进行了技术改造。主要是通过运用LOGO这种简单的可编程控制器及一些外部电路，在原有塑编袋包装线的基础上。设计一种简单的控制器。既能实现塑编袋的包装缝口功能，又能实现PE袋的包装封口功能。     

YF17A型卷烟储存输送装置电气控制系统的设计

综合利用可编程控制器、PROFIBUS-DP总线、分布式I/O、伺服系统和工业PC,设计了一种新型的YF17A卷烟储存输送装置电气控制系统.实践证明,该系统运行效果良好,可以满足烟支自动输送、存储和缓冲调节的要求.     

旋转式多工位自动干果包装机的设计

针对现有的干果包装机多为功能单一、占地面积大、对人工依赖程度高等问题,设计一种旋转式多工位自动干果包装机,该机器集干果的定量收集、装袋、热塑封袋、纸袋整齐装箱、自动封箱等功能于一体。该机器结构紧凑,功能齐全,主要包括3个系统,即:旋转式可控定量投料系统,集抓袋、开袋、装袋、封袋于一体的打包系统,装箱、封箱系统。经实验验证,该机器每小时能包装720袋(合360kg)干果,损失率≤2%。     

Preharvest bagging with wavelength-selective materials enhances development and quality of mango (Mangifera indica L.) cv. Nam Dok Mai #4

BACKGROUND: Preharvest bagging has been shown to improve development and quality of fruits. Different light transmittance bags showed different effects on fruit quality. This study presents the benefits of using newly developed plastic bagging materials with different wavelength‐selective characteristics for mangoes (cv. Nam Dok Mai #4). Mangoes were bagged at 45 days after full bloom (DAFB) and randomly harvested at 65, 75, 85, 95, and 105 DAFB. The bags were removed on the harvest days. The wavelength‐selective bags (no pigment, yellow, red, blue/violet, blue) were compared with the Kraft paper bag with black paper liner, which is currently used commercially for several fruits, and with non‐bagging as a control. RESULTS: Bagging significantly (p?0.05) reduced diseases and blemishes. Mango weight at 95 DAFB was increased approximately 15% by VM and V plastic bagging, as compared to paper bagging and control. Plastic bagging accelerated mango ripening as well as growth. Plastic‐bagged mangoes reached maturity stage at 95 DAFB, while non‐bagged mangoes reached maturity stage at 105 DAFB. Paper bagging resulted in a pale‐yellow peel beginning at 65 DAFB, while plastic bagging improved peel glossiness. CONCLUSION: Preharvest bagging with different wavelength‐selective materials affected mango development and quality. Bagging mangoes with VM and V materials could reduce peel defects and diseases, increase weight, size, and sphericity, improve peel appearance, and shorten the development periods of mangoes. The results suggest a favorable practice using the newly developed VM and V plastic bags in the production of mangoes, and possibly other fruits as well. Copyright © 2010 Society of Chemical Industry     

套袋对清见橘橙果实蔗糖代谢的影响

研究6 种果袋对清见橘橙果实可溶性糖含量及蔗糖代谢关键酶活性的影响。结果表明：不同果袋对清见橘橙果实可溶性糖含量的影响不同,单层果袋显著提高了果实的可溶性糖含量。果实成熟时,套白色单层无纺布袋的果实蔗糖含量最高,套黄色单层袋和白色单层袋的果实果糖含量均最高,套白色单层袋的果实葡萄糖含量最高。单层果袋提高了果实中性转化酶（NI）、蔗糖合酶（SS）和蔗糖磷酸合酶（SPS）的活性,以无纺布袋最为明显,而双层果袋对NI、SS、SPS活性的影响在多数测定点差异不显著。酸性转化酶（AI）活性随着果实的成熟而降低,套袋对AI活性的影响不显著。综上可知,单层果袋通过提高NI、SS、SPS的活性来提高糖含量,因此清见橘橙宜选择具有一定透光率且色泽浅的单层果袋。     

可编程多层装箱机设计

针对现有装箱机械只能完成产品单层单次装箱,装箱产品规格单一,机构动作稳定性差,工人劳动强度高等缺点,提出了一种可编程的多层装箱机的总体设计方案及实施办法.通过详细解析整机的电气控制系统和独特的机械结构可知,整机采用了CANopen总线通信技术,利用可编程工业控制器（PLC）、先进的伺服驱动及变频驱动技术结合触屏式人机界面操作平台,随时进行装箱参数的设置,实现了多工位放料、多次放料、定间距放料的功能,满足了整机装箱工艺的协调性及机构动作的运动顺序,很好地实现了不同产品多层多样式装箱工艺的要求,具有广泛地推广价值.     

啤酒麦汁制备自动控制系统

介绍了啤酒麦汁制备的自动控制系统，系统以可编程序控制器为中心，结合智能控制算法和PID算法，有效地控制了温度、压力、变频器、阀门和电机，从而实现对啤酒麦汁制备过程的自动控制。同时上位机可控制生产过程和工艺参数，动态显示和报警。     

Performance of triple bagging hermetic technology for postharvest storage of cowpea grain in Niger

Triple bagging technology for protecting postharvest cowpea grain from losses to the bruchid, Callosobruchus maculatus Fabricius (Coleoptera: Chrysomelidae: Bruchinae) is currently being adopted on a fairly large scale in ten West and Central African countries, including Niger. The triple bag consists of two inner high-density polyethylene bags acting as oxygen barriers, which in turn are encased in an outer woven polypropylene bag that serves primarily for mechanical strength. These hermetic bags, available in either 50 or 100 kg capacity, are called Purdue Improved Cowpea Storage (PICS) bags. Adoption of PICS technology in West and Central Africa has been driven by its effectiveness, simplicity, low cost, durability, and manufacture within the region. From surveys on adoption we discovered that farmers have begun to re-use bags they had used the previous year or even the previous two years. In the present study, we compared the performance of three different types of PICS bags: (1) new 50 kg (2) new 100 kg bags and (3) once-used 50 kg bags, all filled with naturally infested untreated cowpeas. In these PICS bags the O₂ levels within the bags initially fell to about 3 percent (v/v) while the CO₂ rose to nearly 5 percent (v/v). After five months of storage, new and used 50 kg bags and new 100 kg bags preserved the grain equally well. There were greatly reduced numbers of adults and larvae in the PICS bags versus the controls, which consisted of grain stored in single layer woven bags. The proportion of grain having C. maculatus emergence holes after five months of storage in PICS bags was little changed from that found when the grain was first put into the bags. The PICS technology is practical and useful in Sahelian conditions and can contribute to improved farmers' incomes as well as increase availability of high quality, insecticide-free cowpea grain as food.     

基于MC56F84789的PMSM伺服控制系统设计

目前,在数控机床、自动化生产线、工业机器人等应用场合,以永磁同步电机(PMSM)为控制对象的全数字交流伺服系统正逐步取代直流伺服系统。为了提高永磁同步电机控制器的控制性能,设计开发了基于飞思卡尔32位的MC56F84789型DSP的永磁同步电机数字化矢量控制器。MC56F8479包含各种先进的高速、高精度外设。文中介绍了PMSM的数学模型和磁场定向矢量控制原理,设计了一套功能完善、实时性好的PMSM交流伺服系统。实验结果表明电流环响应迅速、速度和位置闭环控制无稳态误差,所设计的系统工作可靠,控制速度快。     

Field evaluation of the long-lasting treated storage bag,deltamethrin incorporated, (ZeroFly® Storage Bag) as a barrier to insect pest infestation

The deltamethrin incorporated polypropylene (PP) bag, ZeroFly^® Storage Bag, is a new technology to reduce postharvest losses caused by stored-product insect pests. Maize was pre-fumigated and used for the following treatments: ZeroFly bags filled with untreated maize, PP bags filled with maize treated with Betallic Super (80 g pirimiphos-methyl and 15 g permethrin per liter as an emulsifiable concentrate (EC)), and PP bags filled with untreated maize (control). The experiment was conducted from February–August 2015, at four sites in different locations of the Middle Belt of Ghana. Moisture content (MC), number of live and dead insects, insect damaged kernels (IDK) and maize weight loss data were collected monthly. ZeroFly bags and Betallic treatment significantly reduced insect damage compared to the control treatment. ZeroFly bags were able to keep IDK levels below 5% for 4 months, but the levels increased to 5.2 and 10.2% by 5 and 6 months of storage, respectively. In the control, IDK increased significantly over time and reached 32% after 6 months. The ZeroFly bag was effective against Sitophilus, Tribolium and Cryptolestes species for 4 months. Mean weight loss of ≤3.68% was recorded in ZeroFly bags during 6 months of storage whereas 11.88% weight loss occurred in the PP bags by 6 months of storage. Based on our results, ZeroFly bags were found to have potential for use in the reduction of postharvest grain losses in bagged grains. Maize may still have been infested during bagging hence ZeroFly bags were effective for storage for only 4 months. However, greater benefits of using ZeroFly bags are realized if insect-free grains or legumes are stored in bags.