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在包装机械设备上能实现自动化包装的盒子称为机包盒,机包盒一般又分为平张机包盒和折叠机包盒.生产机包盒的印刷企业有很多,也引进了相关测试仪器,但大部分企业仅依靠经验生产,未有效分析测试数据并形成数据关联,不能真正做到过程控制和异常原因分析的数据化.包装机生产分为输盒、开盒、填装、封盒四个步骤,本文主要通过分析开盒步骤的数... 相似文献
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<正>近几年,随着包装企业自动化程度的提升,越来越多的手工糊盒被全自动制盒机所取代,不仅生产效率得到大幅度提升,同时产品质量也有了质的飞跃。但是,在实际生产过程中经常会发现一些质量问题,比如纸盒变形、起皱、起泡、粘贴牢固度不佳等,导致废品率高,严重影响工厂效益。其中以"起泡"现象最为突出,即盒子底部及四周易出现气泡。下面笔者就以"起泡"现象为例,从生产角度分析和探讨包装纸盒起泡的影响因素及解决方法。1.胶水固含量 相似文献
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糊盒作为印后加工中的一环,在当今印刷发展过程中显得越来越重要。糊盒工艺设备也越来越先进。糊出纸盒的结构、样式比以前更加多样化、复杂化。因而在糊盒过程中的质量控制也显得尤为重要了。糊盒质量与横切质量是紧密相连的,横切不好、压痕不深,再好的糊盒机也不能糊制出好的产品,而横切工艺中的横切版制作又与印前盒型有着密不可分的关系。同样规格的纸板,由于盒型设计不同,做出的盒子往往是不一样的,所以盒型设计直接影响最终产品的质量。 相似文献
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Tomoo Ogata 《Yeast (Chichester, England)》2012,29(11):487-494
When exponentially growing cells of bottom‐fermenting yeast were starved for nitrogen or were grown on proline (a non‐preferred nitrogen source), flocculation was induced. This flocculation was not induced by starvation for either carbon or amino acids. Expression of Lg‐FLO1, which is required for flocculation of bottom‐fermenting yeast, was also found to be induced by starvation for nitrogen. This suggests that the flocculation of bottom‐fermenting yeast is under the control of a nitrogen catabolite repression (NCR)‐like mechanism. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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分析纺机罗拉的工作状态,提出下罗拉淬火的要求和优越性;介绍传统淬火——渗碳淬火、渗氮淬火、感应淬火的特点和不足;阐述激光淬火的机理、方法、特征和工艺参数。认为激光淬火可在保持罗拉同心度的条件下,提高工作效率和罗拉的耐磨性,并延长使用寿命,提高成纱质量。 相似文献
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为解决滤棒装盒机生产过程中存在的操作复杂、计量不准确等问题,基于伺服精密驱动技术研制了一种新型滤棒上料整理机构。该机构由侧挡板、活动式托板组成一个能容纳整盒滤棒的渐沉式储棒仓,通过两个伺服电机分别驱动托板及支架垂直移动上料,配合侧面小锤敲击振动使储棒仓内滤棒有序排列,实现了滤棒先在储棒仓内装填整理,然后整盒推进空纸盒的功能。采用新型上料整理机构对HCF80 型滤棒装盒机进行改进试验,结果表明:该机构可以精确控制滤棒整理动作,滤棒排列整齐有序。在不改变原机生产能力情况下,滤棒装支精度达(4 000±5)支/盒,优于YJ36 型滤棒装盒机的精度标准,能够满足行业生产标准要求,有效提升了滤棒产品自动化物流系统的生产效率。 相似文献
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应用JXTA技术实现了P2P资源搜索系统的设计:利用JXTA平台通信协议实现底层信息的交互,利用分布式哈希表技术实现资源索引结构和路由转发,并且通过构造数据结构和信息格式来实现分布式哈希表模块. 相似文献
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Variation of certain chemical properties within the stemwood of black locust (Robinia pseudoacacia L.) 总被引:1,自引:1,他引:0
From the bottom, middle, and top of three mature 35 to 37-year old black locust tree discs were cut and analysed to determine the variation within the stem of certain chemical properties. Hot-water extractive content was greater in heartwood than in sapwood, while the reverse occurred for the dichloromethane extractive content. Vertical stem analysis of hot-water extractives showed that they increased in heartwood but decreasedin sapwood from the bottom to the top of the stems while the reversal occurred for dichloromethane extractive content of sapwood. At the bottom and the middle of the stems, ash content was greater in sapwood than in heartwood, but at the top no difference was found between heartwood and sapwood. Ash content of both heartwood and sapwood was found to increase in the axial direction with respective values of 0.36% (bottom) and 0.76% (top) for heartwood and of 0.65% (bottom) and 0.76% (top) for sapwood. Ash analysis showed that considerable variations were found for the inorganic elements K and P being greater in sapwood than in heartwood. Heartwood was more acid than sapwood except for the top of the stems. Acidity mean values were found to increase from the bottom to the top of the stems in heartwood while they slightly decreased in sapwood. Total buffering capacity of heartwood was greater than that of sapwood and total buffering capacity of sapwood exhibited an inverse relationship to height. Very small acid equivalent values were determined only in sapwood. At the bottom, lignin content in heartwood (25.73%) was greater than in sapwood (18.13%). Lignin content of heartwood decreased from 25.73% at the bottom to 18.33% at the top, while that of sapwood was 18.13% at the bottom, 21.42% at the middle and 19.64% at the top. 相似文献
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横包机烟包推送机构的运动分析与改造 总被引:1,自引:0,他引:1
针对横包机存在的烟包推杆工作不到位等问题,对烟包推送机构进行了运动分析并找出了原因,即曲柄摇杆机构的输入角和极限位置与工艺要求不相符。通过调整凸轮机构从动摆杆的长度和折杆的折曲角,使曲柄的实际输入角和极限位置与理论值一致,确保烟包推杆工作到位。调整方法保持了机构的原设计,操作简便。 相似文献
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