纸纱复合袋糊底机机械系统设计

发布时间：2018-03-13 19:22

本文选题：纸纱复合袋糊底机　切入点：压痕切口装置　出处：《兰州交通大学》2017年硕士论文　论文类型：学位论文

【摘要】：纸纱复合袋是一种由牛皮纸和纱线复合而成的环保型包装袋,主要应用于化工、粮食、医药等多种行业。目前,纸纱复合袋的糊底工作主要由人工完成,其糊底质量不可靠。本文研究的纸纱复合袋糊底机是一种对纸纱复合包装袋进行糊底的新型生产设备。通过对比间歇式工作方式的缺点,拟采用连续式工作方式,对关键部位进行方案设计,并对方案工程化与试验,主要内容如下:通过对手工糊底的过程进行了调研,制定了糊底的工艺路线,明确了糊底机在各个工序上要实现的功能,根据工艺流程和技术要求,对糊底机进行总体布局。袋筒经过水平输送装置到达压痕切口工位,经转向装置袋筒由水平转为竖直输送,分别输送到吸开工位、展开工位、压实成型等工位。根据工艺路线,分别对压痕切口装置、输送装置、吸开装置、展开装置进行方案设计与实现。压痕切口装置主要由支撑组件、压痕组件、气动组件、刀架组件、移动刀架组成。采用气缸驱动,导轨导向,通过刀架的上下运动实现压痕切口一次成型,其中压痕刀和切口刀安装在刀架上,并且可调节,以适应不同规格的袋筒。为了实现袋筒的竖直输送,使用了三种设计方案,袋筒在皮带间夹持输送方案、辊子和片基带输送方案、滚筒输送方案,分别对三种方案进行详细设计,通过实体加工,装配在整机上,经过试验对比,滚筒输送方案效果最佳,运行顺畅,没有掉落和卡顿的现象,能够满足工艺要求。为实现纸纱复合袋糊底机的袋底吸开的关键工序,设计并实现了以双曲柄连杆机构为核心的真空吸开装置。依据吸开力—吸盘直径关系试验、吸开力—相对负压关系试验测定结果,确定吸开装置中真空系统的关键参数。仿真试验和装置实际运行结果表明,曲柄的转速为18.5r/min,吸盘和纸袋接触时的负压时间为0~0.76s时,装置具有良好的吸开效果,能够满足现场需求。对展开装置设计了三种方案,并进行试验对比,展开方案三的试验效果最好,对展开方案三有针对性地进行优化设计,并对优化后的方案进行了试验验证。本文对纸纱复合袋糊底机关键部件进行了设计,将设计的装置工程化,装配在样机上,并对各个装置进行调试试验,通过对比,找出方案的不足,并对方案进行优化与验证,为后续纸纱复合袋糊底样机的产品化提供了基础。
[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.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB486

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