本文選題：大袋自動(dòng)包裝機(jī) + 模塊化�。� 參考：《江南大學(xué)》2015年碩士論文

【摘要】：粉料定量大袋自動(dòng)包裝機(jī)是針對50Kg級(jí)粉末狀或者顆粒狀物料的包裝機(jī)械,能夠?qū)崿F(xiàn)供袋、開袋、稱量、下料、封口等包裝過程的自動(dòng)化,廣泛應(yīng)用于食品和化工包裝行業(yè)。目前國內(nèi)的大袋自動(dòng)包裝機(jī)主要依賴進(jìn)口,一部分自行研制大袋自動(dòng)包裝機(jī)在實(shí)際使用過程中性能不穩(wěn)定,真空吸袋時(shí)掉袋等問題普遍出現(xiàn),影響生產(chǎn)效率。本文基于校企合作的橫向項(xiàng)目,針對現(xiàn)有大袋包裝機(jī)普遍存在的機(jī)械結(jié)構(gòu)不合理、缺乏可靠性分析、真空吸附不穩(wěn)定、控制系統(tǒng)落后等問題進(jìn)行深入研究,并研發(fā)設(shè)計(jì)能夠完成進(jìn)袋、挑袋、夾袋、抱袋和縫包功能的大袋自動(dòng)包裝機(jī)。首先針對大袋自動(dòng)包裝機(jī)機(jī)械結(jié)構(gòu)進(jìn)行分析,根據(jù)大袋自動(dòng)包裝機(jī)的生產(chǎn)工藝流程將整個(gè)系統(tǒng)分為進(jìn)袋系統(tǒng)、挑袋系統(tǒng)、夾袋系統(tǒng)、抱袋系統(tǒng)和縫包系統(tǒng)五個(gè)子系統(tǒng)模塊,運(yùn)用模塊化的設(shè)計(jì)方法利用三維軟件完成大袋包裝機(jī)的機(jī)械結(jié)構(gòu)設(shè)計(jì)。其次為提高粉料定量大袋自動(dòng)包裝機(jī)的可靠性,分析了其功能組成模塊,并對各個(gè)子系統(tǒng)進(jìn)行失效率預(yù)計(jì)和分析,綜合計(jì)算出其可靠性指標(biāo)——平均無故障時(shí)間;根據(jù)粉料定量大袋自動(dòng)包裝機(jī)的結(jié)構(gòu)特點(diǎn),完成其故障模式分析,并建立了完整的故障樹模型,引入模糊故障樹,把各個(gè)底事件發(fā)生的概率統(tǒng)一歸一為三角模糊數(shù),運(yùn)用模糊故障樹的分析和擴(kuò)張算法,完成粉料定量大袋自動(dòng)包裝機(jī)機(jī)械本體的故障分析。然后針對真空吸袋不穩(wěn)定的情況,研究大袋包裝機(jī)吸袋裝置對不同材料包裝袋的吸袋能力。分析真空吸附裝置的吸附原理,建立了真空吸附模型,分別對內(nèi)襯編織袋、覆膜編織袋和紙塑復(fù)合袋三種包裝袋進(jìn)行吸取試驗(yàn),記錄氣壓變化情況。得到吸取不同編織袋時(shí)氣壓變化并不相同,引入包裝袋的泄漏系數(shù),并確定該三種包裝袋的泄漏系數(shù)分別為0.192、0.089、0.042。根據(jù)泄漏系數(shù)和工作效率,吸取這三種包裝袋時(shí)真空源氣壓區(qū)間應(yīng)設(shè)定為59~64k Pa、70~75k Pa、66~71k Pa。最后針對大袋自動(dòng)包裝機(jī)實(shí)際使用過程中控制系統(tǒng)出現(xiàn)管線分布雜亂且易于損壞等問題,基于PROFIBUS-DP現(xiàn)場總線設(shè)計(jì)大袋自動(dòng)包裝機(jī)的控制系統(tǒng),詳細(xì)介紹了該控制系統(tǒng)的硬件結(jié)構(gòu)及元器件的選型和軟件實(shí)現(xiàn)流程,該控制系統(tǒng)具有很強(qiáng)的網(wǎng)絡(luò)通信能力,為實(shí)現(xiàn)大袋自動(dòng)包裝機(jī)的智能化和遠(yuǎn)程監(jiān)控提供了便利。
[Abstract]:Automatic packing machine for powder quantitative large bag is a packaging machine for 50Kg grade powder or granular material. It can realize the automation of packing process such as feeding, opening, weighing, discharging, sealing and so on. It is widely used in food and chemical packaging industry. At present, the domestic automatic packaging machine mainly relies on imports. Some of the self-developed automatic packaging machine in the actual use of the performance of instability, vacuum bag suction bag drop and other problems, affecting the efficiency of production. Based on the horizontal project of the cooperation between school and enterprise, this paper makes a deep research on the problems such as unreasonable mechanical structure, lack of reliability analysis, unstable vacuum adsorption, backward control system, etc. And developed and designed to complete the bag, pick bag, clip bag, bag holding and sewing bag function of the large bag automatic packaging machine. Firstly, the mechanical structure of the large bag automatic packaging machine is analyzed, and the whole system is divided into five sub-modules according to the production process of the large bag automatic packaging machine: the bag feeding system, the bag picking system, the bag clamping system, the bag holding system and the sewing package system. The mechanical structure design of large bag packing machine is completed by using three-dimensional software. Secondly, in order to improve the reliability of the powder quantitative large bag automatic packaging machine, the function component module is analyzed, and the failure rate of each subsystem is predicted and analyzed, and the reliability index, the average failure free time, is calculated synthetically. According to the structural characteristics of the powder quantitative large bag automatic packaging machine, the fault mode analysis is completed, and the complete fault tree model is established. The fuzzy fault tree is introduced, and the probability of the occurrence of each bottom event is unified into a triangular fuzzy number. Based on the fuzzy fault tree analysis and expansion algorithm, the fault analysis of the mechanical body of the powder quantitative large bag automatic packaging machine is completed. According to the instability of vacuum bag suction, the bag suction ability of bag suction device of large bag packing machine for different materials was studied. The adsorption principle of vacuum adsorption device was analyzed, and the vacuum adsorption model was established. Three kinds of packaging bags, including lined woven bag, coated woven bag and paper plastic composite bag, were carried out to record the change of air pressure. The leakage coefficient of the three kinds of bags was determined to be 0.192 0. 089% and 0. 042% respectively, and the leakage coefficient of the three bags was determined to be 0. 192%, 0. 089% and 0. 042% respectively. According to the leakage coefficient and working efficiency, the vacuum pressure range of vacuum source should be set to 594kPa7075k Pao 6671k Pa. when these three kinds of bags are absorbed. Finally, the control system of the automatic packaging machine is designed based on the PROFIBUS-DP field bus, aiming at the problems of the pipeline distribution and easily damaged in the control system of the large bag automatic packaging machine in the process of practical use. The hardware structure of the control system, the selection of components and the software realization flow are introduced in detail. The control system has strong network communication ability, which provides convenience for the realization of intelligent and remote monitoring and control of large bag automatic packaging machine.
【學(xué)位授予單位】：江南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB486

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