發(fā)布時間：2018-08-24 18:54

【摘要】：本文在分析研究國內(nèi)外大量生鮮食品包裝機(jī)械研究和應(yīng)用現(xiàn)狀的基礎(chǔ)上,提出了適應(yīng)中國市場的負(fù)壓式生鮮食品包裝機(jī)包裝工藝及整機(jī)方案,重點(diǎn)研究生鮮食品包裝機(jī)的輸送裝置、切斷機(jī)構(gòu)和橫封裝置的工作原理和技術(shù),實(shí)現(xiàn)生鮮食品的高速、高質(zhì)量包裝。主要研究內(nèi)容及結(jié)論如下:(1)根據(jù)我國生鮮食品包裝機(jī)械現(xiàn)狀,提出了負(fù)壓式生鮮食品包裝機(jī)的設(shè)計(jì)要求以及技術(shù)參數(shù),并對包裝工藝進(jìn)行了分析。確定了負(fù)壓式生鮮食品包裝機(jī)整機(jī)結(jié)構(gòu)以及工作原理,根據(jù)生鮮食品包裝機(jī)的傳動要求,對包裝機(jī)的傳動系統(tǒng)進(jìn)行了設(shè)計(jì)研究,并對各個機(jī)構(gòu)傳動的關(guān)鍵參數(shù)進(jìn)行了計(jì)算。(2)對包裝機(jī)輸送裝置進(jìn)行了仿真與試驗(yàn)研究,通過壓縮試驗(yàn)和ANSYS有限元仿真分析了輸送裝置對包裝盒壓縮變形的過程及機(jī)理,分析了包裝盒的易損傷位置及原因。并通過正交試驗(yàn),確定最佳參數(shù)組合,在包裝盒及生鮮食品不壓縮受損的同時,保證PET包裝盒和輸送裝置有較好的輸送同步性。(3)研制了基于凸輪連桿式的包裝機(jī)切斷機(jī)構(gòu),應(yīng)用ADAMS建立了切斷機(jī)構(gòu)的參數(shù)化模型,對其進(jìn)行運(yùn)動學(xué)分析和仿真模擬,得到該機(jī)構(gòu)主要參數(shù)變化對機(jī)構(gòu)運(yùn)動的影響規(guī)律。通過二次規(guī)劃算法優(yōu)化分析計(jì)算,得出一組最優(yōu)參數(shù)組合,此參數(shù)條件下切刀的加速度最大值為7971 mm/s2,切割距離為20.4 mm,滿足切斷機(jī)構(gòu)工藝需求。利用此參數(shù)組合的運(yùn)動學(xué)仿真分析表明,下切刀的加速度最大值為7971 mm/s2,切割距離為20.4mm。試驗(yàn)樣機(jī)對多種厚度的PVC保鮮膜切斷率都在98%以上,切斷機(jī)構(gòu)滿足生鮮食品包裝機(jī)作業(yè)要求。(4)設(shè)計(jì)了一種基于負(fù)壓原理的生鮮食品包裝機(jī)橫封裝置,橫封裝置采用負(fù)壓吸膜方式實(shí)現(xiàn)橫封作業(yè),裝置主要由前吸風(fēng)盒、切斷器、后吸風(fēng)盒和輥?zhàn)虞斔蜋C(jī)為主要部分組成。對橫封裝置裹膜過程中的動力學(xué)特性進(jìn)行了分析,應(yīng)用FLUENT進(jìn)行后吸風(fēng)盒流場研究。通過樣機(jī)正交旋轉(zhuǎn)組合試驗(yàn)進(jìn)行影響因素的回歸方程顯著性分析,并通過MATLAB優(yōu)化得出裝置最佳的結(jié)構(gòu)和工作參數(shù),橫封率為99.5%,回歸方程式可較好的分析和預(yù)測橫封裝置的性能。(5)通過負(fù)壓式生鮮食品包裝機(jī)樣機(jī)試制以及試驗(yàn)研究,樣機(jī)對于生鮮食品的包裝速度為49.4包/min,包裝率為99.4%,鼓包率為5%,基于負(fù)壓式原理的負(fù)壓式生鮮食品包裝機(jī),達(dá)到了設(shè)計(jì)要求和預(yù)期目標(biāo)。
[Abstract]:On the basis of analyzing and studying the research and application status of a large number of fresh food packaging machinery at home and abroad, this paper puts forward the packaging technology and the whole machine scheme of the negative pressure fresh food packaging machine adapted to the Chinese market. The working principle and technology of the conveying device, cutting off mechanism and transverse sealing device of fresh food packaging machine are studied in order to realize the high speed and high quality packaging of fresh food. The main contents and conclusions are as follows: (1) according to the present situation of fresh food packaging machinery in China, the design requirements and technical parameters of negative pressure fresh food packaging machine are put forward, and the packaging technology is analyzed. The structure and working principle of the negative pressure fresh food packaging machine are determined. According to the transmission requirements of the fresh food packaging machine, the transmission system of the packaging machine is designed and studied. The key parameters of the transmission of each mechanism are calculated. (2) the simulation and experimental research on the conveying device of the packaging machine are carried out. The process and mechanism of the compression deformation of the packaging box are analyzed by compression test and ANSYS finite element simulation. The easily damaged position and reason of packing box are analyzed. Through orthogonal test, the best parameter combination is determined, while the packing box and fresh food are not compressed and damaged, the PET packing box and conveying device are guaranteed to have good transport synchronism. (3) the cutting mechanism of packaging machine based on cam connecting rod is developed. The parameterized model of the cutting mechanism is established by using ADAMS. The kinematics analysis and simulation are carried out, and the influence of the main parameters of the mechanism on the motion of the mechanism is obtained. Through the optimization analysis and calculation of quadratic programming algorithm, a group of optimal parameter combinations are obtained. The maximum acceleration of the cutter is 7971 mm/s2, and the cutting distance is 20.4 mm, under this parameter condition, which meets the technological requirements of the cutting mechanism. The kinematics simulation results show that the maximum acceleration of the cutter is 7971 mm/s2, and the cutting distance is 20.4mm. The cutting rate of PVC film with various thickness is above 98%, and the cutting mechanism can meet the requirements of fresh food packaging machine. (4) A kind of transverse sealing device of fresh food packaging machine based on negative pressure principle is designed. The transverse sealing device adopts the negative pressure suction film method to realize the transverse sealing operation. The device is mainly composed of the front suction box, the cut-off device, the rear suction box and the roller conveyor. The dynamic characteristics of the transverse sealing device during the process of film wrapping were analyzed and the flow field of the rear suction box was studied by using FLUENT. The regression equation of the influencing factors was analyzed by orthogonal rotating combination test of prototype, and the optimal structure and working parameters of the device were obtained by MATLAB optimization. The horizontal sealing ratio is 99.5, and the regression equation can better analyze and predict the performance of the transverse sealing device. (5) the prototype of the negative pressure fresh food packaging machine is trial-produced and the experimental research is carried out. The packaging speed of the prototype for fresh food is 49.4 / min, the packing rate is 99.44.The packing rate of drum is 5. The negative pressure type fresh food packaging machine based on the principle of negative pressure has achieved the design requirements and expected objectives.
【學(xué)位授予單位】：中國農(nóng)業(yè)大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2017
【分類號】：TS206.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鄭兆啟;李樹君;馬季威;王冰;李超;崔亮;;果蔬包裝機(jī)凸輪連桿式切斷機(jī)構(gòu)運(yùn)動分析與優(yōu)化[J];農(nóng)業(yè)機(jī)械學(xué)報;2016年S1期

2 陳鏡波;;日本包裝機(jī)械產(chǎn)值連續(xù)五年回升[J];印刷技術(shù);2016年10期

3 鄭兆啟;李樹君;王冰;馬季威;李超;盧黎明;;鮮切果蔬包裝機(jī)輸送機(jī)構(gòu)仿真與試驗(yàn)[J];農(nóng)業(yè)機(jī)械學(xué)報;2016年07期

4 楊仁民;張學(xué)昌;韓俊翔;;鋁箔卷裝盒機(jī)封口機(jī)構(gòu)動力學(xué)仿真及參數(shù)優(yōu)化[J];包裝工程;2016年07期

5 梅菊;黃松和;李超軍;;基于ADAMS與Ansys的凸輪連桿長擺臂系統(tǒng)的剛?cè)狁詈戏治鯷J];包裝工程;2016年07期

6 孫凱;曾起艷;阮建青;;農(nóng)業(yè)產(chǎn)業(yè)集群如何緩解勞動力短缺——基于安徽省安慶市茶葉產(chǎn)業(yè)集群的研究[J];農(nóng)業(yè)經(jīng)濟(jì)問題;2016年03期

7 張文龍;趙雅娜;韓克偉;戴亞杰;;馬來酸酐接枝改性氯化聚氯乙烯的制備及其在PVC中的應(yīng)用[J];中國塑料;2016年02期

8 郜海燕;陳杭君;穆宏磊;秦艷紅;房祥軍;楚文靖;;生鮮食品包裝材料研究進(jìn)展[J];中國食品學(xué)報;2015年10期

9 李三江;李亞娜;;國外包裝機(jī)械的現(xiàn)狀和發(fā)展趨勢及國內(nèi)包裝機(jī)械的發(fā)展策略之我見[J];科技資訊;2015年35期

10 段能全;杜文華;趙惠文;王俊元;;枕形包裝機(jī)旋轉(zhuǎn)往復(fù)式橫封機(jī)構(gòu)的運(yùn)動分析[J];包裝工程;2014年21期

相關(guān)博士學(xué)位論文 前2條

1 李福強(qiáng);大型輪式收獲機(jī)械車架疲勞可靠性分析方法研究[D];中國農(nóng)業(yè)大學(xué);2016年

2 袁月明;氣吸式水稻芽種直播排種器的理論及試驗(yàn)研究[D];吉林大學(xué);2005年

相關(guān)碩士學(xué)位論文 前10條

1 沙周華;基于虛擬儀器的石油管復(fù)合擠毀試驗(yàn)系統(tǒng)[D];華東理工大學(xué);2016年

2 黃嘉智;基于LabVIEW的高速數(shù)據(jù)采集及管理系統(tǒng)設(shè)計(jì)[D];北京理工大學(xué);2016年

3 魏菲;生鮮食品配送中心選址研究[D];北京交通大學(xué);2015年

4 陳安珍;聚氯乙烯（PVC）及其混合物的結(jié)構(gòu)與性能研究[D];北京化工大學(xué);2014年

5 吳雙;果蔬自動包裝機(jī)的設(shè)計(jì)與開發(fā)[D];浙江農(nóng)林大學(xué);2014年

6 趙惠文;枕形包裝機(jī)橫封器的性能研究[D];中北大學(xué);2014年

7 賀金虎;基于ADAMS的帶式輸送機(jī)動特性仿真分析研究[D];太原理工大學(xué);2014年

8 曹林;吸盤式水稻育秧播種機(jī)結(jié)構(gòu)優(yōu)化與播種性能試驗(yàn)[D];浙江大學(xué);2014年

9 徐敏雅;三通道禽蛋分級生產(chǎn)線總體設(shè)計(jì)及包裝機(jī)的研究[D];浙江大學(xué);2013年

10 羅建;序列二次規(guī)劃（SQP）算法及其在航天器追逃中的應(yīng)用[D];哈爾濱工業(yè)大學(xué);2012年

，

本文編號：2201724