PVC自动包装生产线的技术改进

发布时间：2018-03-15 01:20

本文选题：自动包装生产线　切入点：开口部分　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：自动包装生产线作为现代包装工业必不可少的关键设备。它提高了商品包装的效率，降低了不合格包装的比例，社会效益和经济效益极其可观，因而在自动包装领域中得到广泛的应用。但在实际生产中，自动包装生产线常常出现装料过程中产品洒出和不合格产品不能完全检出等问题。针对上述问题，在自动包装生产线开口部分程序和重量及金属检测部分程序中，分别给出改进方案。经过观察与实验，发现产品洒出问题主要是自动包装生产线拉开袋口工序袋夹拉开两侧与真空吸盘拉开另一侧不同步造成的。在袋口未拉开到规定大小时，即开始打料，造成产品洒出。提出在开口部分程序中虚拟中间继电器前加入一个检测袋口的输入点，以检测袋口是否已拉开到规定大小，确保袋夹与真空吸盘的控制同步性。不合格产品不能完全检出的问题是自动包装生产线中金属检出机与剔除机配合失当造成的。对重量及金属检测部分的程序进行了改进，加入延时定时器触点，代替原有的常规输入点，给含有金属异物的不合格产品报警一个延时，避免了金属检出机报警时，合格产品由于未通过剔除机被误剔除，不合格产品则通过的问题。将上述改进应用于糊树脂第二车间的自动包装生产线中，进行多组对比实验。由实验结果可知，产品洒出情况大为减少，装袋合格率大幅提高，误剔除合格产品的现象基本不再出现，改进方案达到预期效果，能够取得一定的经济效益，，满足实际生产的需要。
[Abstract]:Automatic packaging production line is an indispensable key equipment in modern packaging industry. It improves the efficiency of commodity packaging, reduces the proportion of unqualified packaging, and makes great social and economic benefits. Therefore, it has been widely used in the field of automatic packaging. However, in practice, the automatic packaging production line often has problems such as product sprinkling during the loading process and the unqualified products can not be completely detected, etc. In view of the above problems, In the program of opening part, weight and metal detection of automatic packaging production line, the improvement scheme is given respectively. After observation and experiment, it is found that the problem of product spilling is mainly caused by the non-synchronization between the two sides of the bag clamps and the vacuum suckers in the process of opening the bag mouth in the automatic packaging production line. When the bag mouth is not opened to the specified size, it begins to press the material. It is proposed to add an input point in front of the virtual intermediate relay in the open part program to check whether the bag mouth has been opened to the specified size. The problem that the unqualified product can not be completely detected is caused by the improper cooperation between the metal detector and the culling machine in the automatic packaging production line. The program of the weight and metal detection part has been improved. The delay timer contact is added to replace the original conventional input point, and a delay is given to the unqualified product containing the metal foreign body. When the metal detector alarm is avoided, the qualified product is mistakenly removed because it has not passed the culling machine. Unqualified products pass the problem. The above improvements have been applied to the automatic packaging production line of the second workshop of paste resin, and many groups of comparative experiments have been carried out. From the results of the experiments, we can see that the situation of product spilling has been greatly reduced, and the qualified rate of bagging has been greatly increased. The phenomenon of eliminating the qualified products by mistake is no longer present, and the improvement scheme can achieve the expected effect, which can obtain certain economic benefits and meet the needs of actual production.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB48

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