本文選題：紙紗復(fù)合袋糊底機　切入點：壓痕切口裝置　出處：《蘭州交通大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：紙紗復(fù)合袋是一種由牛皮紙和紗線復(fù)合而成的環(huán)保型包裝袋,主要應(yīng)用于化工、糧食、醫(yī)藥等多種行業(yè)。目前,紙紗復(fù)合袋的糊底工作主要由人工完成,其糊底質(zhì)量不可靠。本文研究的紙紗復(fù)合袋糊底機是一種對紙紗復(fù)合包裝袋進行糊底的新型生產(chǎn)設(shè)備。通過對比間歇式工作方式的缺點,擬采用連續(xù)式工作方式,對關(guān)鍵部位進行方案設(shè)計,并對方案工程化與試驗,主要內(nèi)容如下:通過對手工糊底的過程進行了調(diào)研,制定了糊底的工藝路線,明確了糊底機在各個工序上要實現(xiàn)的功能,根據(jù)工藝流程和技術(shù)要求,對糊底機進行總體布局。袋筒經(jīng)過水平輸送裝置到達壓痕切口工位,經(jīng)轉(zhuǎn)向裝置袋筒由水平轉(zhuǎn)為豎直輸送,分別輸送到吸開工位、展開工位、壓實成型等工位。根據(jù)工藝路線,分別對壓痕切口裝置、輸送裝置、吸開裝置、展開裝置進行方案設(shè)計與實現(xiàn)。壓痕切口裝置主要由支撐組件、壓痕組件、氣動組件、刀架組件、移動刀架組成。采用氣缸驅(qū)動,導(dǎo)軌導(dǎo)向,通過刀架的上下運動實現(xiàn)壓痕切口一次成型,其中壓痕刀和切口刀安裝在刀架上,并且可調(diào)節(jié),以適應(yīng)不同規(guī)格的袋筒。為了實現(xiàn)袋筒的豎直輸送,使用了三種設(shè)計方案,袋筒在皮帶間夾持輸送方案、輥子和片基帶輸送方案、滾筒輸送方案,分別對三種方案進行詳細設(shè)計,通過實體加工,裝配在整機上,經(jīng)過試驗對比,滾筒輸送方案效果最佳,運行順暢,沒有掉落和卡頓的現(xiàn)象,能夠滿足工藝要求。為實現(xiàn)紙紗復(fù)合袋糊底機的袋底吸開的關(guān)鍵工序,設(shè)計并實現(xiàn)了以雙曲柄連桿機構(gòu)為核心的真空吸開裝置。依據(jù)吸開力—吸盤直徑關(guān)系試驗、吸開力—相對負壓關(guān)系試驗測定結(jié)果,確定吸開裝置中真空系統(tǒng)的關(guān)鍵參數(shù)。仿真試驗和裝置實際運行結(jié)果表明,曲柄的轉(zhuǎn)速為18.5r/min,吸盤和紙袋接觸時的負壓時間為0~0.76s時,裝置具有良好的吸開效果,能夠滿足現(xiàn)場需求。對展開裝置設(shè)計了三種方案,并進行試驗對比,展開方案三的試驗效果最好,對展開方案三有針對性地進行優(yōu)化設(shè)計,并對優(yōu)化后的方案進行了試驗驗證。本文對紙紗復(fù)合袋糊底機關(guān)鍵部件進行了設(shè)計,將設(shè)計的裝置工程化,裝配在樣機上,并對各個裝置進行調(diào)試試驗,通過對比,找出方案的不足,并對方案進行優(yōu)化與驗證,為后續(xù)紙紗復(fù)合袋糊底樣機的產(chǎn)品化提供了基礎(chǔ)。
[Abstract]:The paper yarn composite bag is a kind of environment-friendly packing bag made of Kraft paper and yarn. It is mainly used in many industries such as chemical industry, grain, medicine and so on. At present, the paste bottom work of paper yarn composite bag is mainly completed by manual. The paper studied the paper yarn composite bag paste bottom machine is a new production equipment for the paper yarn composite packaging bag paste bottom. By comparing the shortcomings of the intermittent working mode, the paper proposes to adopt the continuous working mode. The main contents are as follows: through the investigation of the process of manual bottom paste, the technological route of the paste bottom is worked out, and the function of the bottom paste machine in each working procedure is clarified. According to the technological process and technical requirements, the overall layout of the bottom paste machine is carried out. The bag barrel passes through the horizontal conveying device to the indentation notch position, and through the steering device, the bag barrel is transferred from horizontal to vertical, and transported to the suction start position, respectively, and the work station is developed. According to the process route, the indentation cutting device, conveying device, suction device and expansion device are designed and implemented respectively. The indentation cutting device is mainly composed of supporting components, indentation components, pneumatic components, The tool holder assembly is composed of moving tool holder. It is driven by cylinder and guided by guide rail. The indentation knife and notch knife are installed on the tool holder and can be adjusted by the upper and lower movement of the tool holder. In order to meet the different specifications of the bag barrel. In order to realize the vertical conveying of the bag barrel, three design schemes are used: the bag barrel is clamped in the belt, the roller and the sheet base belt are carried out, and the roller is transported. Each of the three schemes is designed in detail. Through solid processing and assembly on the whole machine, after experimental comparison, the roller conveying scheme has the best effect, runs smoothly, and has no phenomenon of falling and stopping. In order to realize the key process of bag bottom suction of paper yarn composite bag paste machine, a vacuum suction device with double crank connecting rod mechanism as the core is designed and realized. According to the relation between suction force and sucker diameter, the vacuum suction device is designed and realized. The key parameters of vacuum system in the suction device were determined by measuring the relation between suction force and relative negative pressure. The simulation results and the actual operation results showed that the rotation speed of the crank was 18.5 r / min, and the negative pressure time of the suction tray and the paper bag was 0 ~ 0.76s. The device has good suction effect and can meet the needs of the field. Three schemes are designed and compared with each other. The test effect of the third scheme is the best, and the optimization design of the third development scheme is carried out pertinently. In this paper, the key parts of the paper yarn composite bag paste machine are designed, the designed device is engineering, assembled on the prototype, and the debugging test of each device is carried out. To find out the shortage of the scheme, and to optimize and verify the scheme, which provides the basis for the production of the paper yarn composite bag paste bottom prototype.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TB486

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