本文選題：包裝機(jī)　切入點(diǎn)：翻領(lǐng)成型器　出處：《江南大學(xué)》2014年碩士論文

【摘要】：翻領(lǐng)成型器是立式制袋—充填—封口包裝機(jī)中的一個關(guān)鍵部件，其構(gòu)造及制造質(zhì)量對包裝材料的性能及其袋成型質(zhì)量有重要的影響。目前廣泛使用的翻領(lǐng)成型器在制造時都將其肩曲面在軸向進(jìn)行一定的偏移，偏移后的袋成型效果優(yōu)于按理論曲面進(jìn)行制造的成型器，但偏移的根據(jù)沒有理論解釋，偏移量只是根據(jù)經(jīng)驗有一個大概值（2~3mm）。本文基于此現(xiàn)象，，進(jìn)行了如下幾方面的探討研究。 首先，本文對包裝材料流經(jīng)翻領(lǐng)成型器時其厚度的變化進(jìn)行了初步探究。本文從幾何非線性角度探究了材料經(jīng)過翻領(lǐng)成型器時厚度變化，并給出了厚度與長度變化的式子。 其次，本文建立了肩曲面在軸向有偏移的翻領(lǐng)成型器的數(shù)學(xué)模型；從材料經(jīng)過領(lǐng)口曲線處的路徑與曲率變化方面進(jìn)行了分析探究。在前一步對包裝材料厚度變化研究的基礎(chǔ)上，本文通過對比分析材料經(jīng)過肩曲面在軸向無偏移與有偏移的翻領(lǐng)成型器的原始領(lǐng)口曲線處的路徑與曲率變化，發(fā)現(xiàn)肩曲面在軸向有一定偏移時，材料經(jīng)過成型器時的路徑比理論上經(jīng)過肩曲面在軸向無偏移時的路徑要長，薄膜的曲率變化也更為緩和。 進(jìn)一步地，本文從材料經(jīng)過領(lǐng)口曲線處的受力方面進(jìn)行了分析探究。通過之前兩方面的探究，針對前兩方面的探究發(fā)現(xiàn)，進(jìn)一步地從受力方面對比分析了包裝材料經(jīng)過肩曲面在軸向無偏移與有偏移的翻領(lǐng)成型器的原始領(lǐng)口曲線處包裝材料的受力情況，發(fā)現(xiàn)肩曲面在軸向偏移一定距離后，材料受力更大，更易將材料拉過翻領(lǐng)成型器，且與原始領(lǐng)口交接曲線的貼合更為密切。 最后通過設(shè)計并制作試驗裝置對包裝材料和翻領(lǐng)成型器進(jìn)行了相關(guān)試驗，驗證了前面的理論分析，并給出了兩點(diǎn)選擇肩曲面在軸向偏移量的建議。
[Abstract]:Lapel forming is a key component in vertical bag making, filling and sealing packaging machine. Its construction and manufacturing quality have an important impact on the performance of packaging materials and bag molding quality. At present, the widely used lapel molders shift their shoulder surfaces to a certain extent in the axial direction when they are manufactured. The effect of the offset bag is better than that of the one made according to the theoretical surface, but there is no theoretical explanation on the basis of the offset, and the offset is only based on the experience. Based on this phenomenon, the following aspects are discussed and studied in this paper. Firstly, the change of the thickness of the packaging material as it flows through the lapel molder is studied in this paper, and the variation of the thickness and the length of the material through the lapel molder is discussed from the angle of geometric nonlinearity. Secondly, the mathematical model of the turn-off molding with shoulder surface offset in axial direction is established in this paper. This paper analyzes and probes into the path and curvature change of the material passing through the neckline curve. On the basis of the research on the thickness change of the packaging material in the previous step, By comparing and analyzing the path and curvature change of the original neckline curve of the material passing through the shoulder surface, it is found that the shoulder surface has a certain deviation in the axial direction. The path of the material passing through the moulding device is longer than that when the material passes through the shoulder surface in the axial direction and the curvature change of the film is more moderate. Further, this paper analyzes and explores the force of the material passing through the neckline curve. Through the previous two aspects of the inquiry, the first two aspects of the inquiry found, Furthermore, from the point of stress, the paper compares and analyzes the stress of the packaging material at the original neckline curve of the shoulder surface with or without deviation from the shoulder surface. It is found that the shoulder surface is at a certain distance after the axial deviation. It is easier to pull the material over the lapel molder and fit the curve of the original neckline more closely. Finally, by designing and making the test device, the related tests on packaging materials and lapel molders are carried out, and the theoretical analysis is verified, and the suggestion of selecting the axial offset of two points shoulder surface is given.
【學(xué)位授予單位】：江南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TB486

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