钢丝帘布裁断机的构造与特点

14～ 40°(70°)带束层钢丝帘布裁断机和 90°胎体钢丝帘布裁断机主要由导开装置、定长送布装置、铡刀式裁断装置、接取输送带、自动接头装置、帘布包边装置、卷取装置、气动系统和自动控制系统组成。其裁断装置为液压铡刀式 ,裁断速度可保证在 2 0刀·min- 1 以上 ,采用两轮对接方式接头 ,具有超过退回功能 ,定位准确、裁断精度高 ;自动控制系统采用VB开发 ,具有全中文故障自诊断功能。     

橡胶机械的维护与检修技术讲座 第三讲 XC—1500型卧式纤维帘布裁断机

1 设备概述设备适用于橡胶纤维帘布0°~45°角度范围内一切用途的裁断。目前主要有两种型号：XC-1500型和XC-1100型。而XC-1500型卧式裁断机根据输送装置长度,又有8m、10m和12m三种类型,用户可根据要求选用。普通结构形式的卧式裁断机如附图所示,它主要由导开装置、单环贮布器、送布装置、定长装置、裁布装置及控制系统组成。附图 XC-1500A型卧式纤维帘布裁断机1-双位导开装置;2-单环贮布牵引装置;3-输送装置;4-裁断装置;5-定长编码器;6-卷取装置;7-电控系统;8-显示屏从导开装置上导出的胶帘布通过单环贮布器后进入送布装置往…     

伺服控制系统在14~70°钢丝帘布裁断机中的应用

介绍伺服控制系统在14~70°钢丝帘布裁断机中的应用。该系统采用计算机和PLC通过Profibus总线连接伺服控制器,以完成导开、塑料垫布卷取、定长送布、输送带接取及自动接头等动作,并利用交流伺服电机正反转启动快和定位精度高的特点,在帘布定长送布前先后退一定距离然后再送布的方法解决了铡刀式裁断后帘布与铡刀粘连问题。     

18°～70°钢丝帘布裁断机升级改造

对18°～70°钢丝帘布裁断机进行升级改造。通过去掉定长磁力运动机构、增加帘布牵引机构、在裁断机刀座上增加400 kg配重、设计接头辅助装置和优化PLC程序,解决了原设备裁断钢丝直径小、裁断帘布毛刺大、接头错边超标及生产效率低的问题。     

15°～70°钢丝帘布裁断机研制成功

日前,桂林橡胶机械厂举行15°～70°钢丝帘布裁断机现场交流会。参加会议的山东成山轮胎股份公司、华南轮胎橡胶有限公司、三角轮胎股份公司等专家对该厂刚研制成功的钢丝帘布裁断机给与很高评价。现产品已完成负荷试车,通过用户上海载重轮胎厂的验收并在用户现场安装完毕。该产品综合了国内外钢丝帘布裁断机的特点,多项技术在国内为首次采用。其15°～70°的大角度及裁刀长度4000mm保证设备适应轿车、轻卡、载重轮胎带束层生产。钢丝帘布裁断机包括导开机构、递布机构、剪床、剪床下输送带、定位机构、拼接机构、卸布机构、牵引装置、包边…     

德国UCM型纤维帘布裁断机简介

UCM型纤维帘布裁断机由导开、送布、裁断主机、接头、纵裁、包边、卷取等部分组成,具有工作精度高;自动化程度高;生产能力大,工作效率高;各装置组合灵活,功能选择自由等优点。文章介绍了该机生产能力,各部分的性能和技术参数,并指出了该机的特有功能为:恒张力导开自动控制,双电机驱动磁性夹持高精度送布系统,刀口防粘措施,压缩空气托送帘布,快速换刀锁紧机构,自动贴封口胶系统和自动故障显示。     

Fischer钢丝帘布裁断机卷取工位改造

介绍德国Fischer产钢丝帘布裁断机卷取工位的改造.通过将A-B向单工位卷取改造为A-B向前、后双工位卷取,使前、后卷取工位卷取切换时间控制在15 s以内,大幅度提高了生产效率,很好地挖掘了设备潜能,满足了钢丝帘布的生产需求.     

横滨与埃克森美孚合作开发内衬层新技术

15°～ 72°钢丝帘布裁断机研制成功     

非公路型斜交轮胎的子午化改造

介绍非公路型斜交轮胎的子午化改造方法。采用大部分现有斜交轮胎的生产设备,通过技术改进,提高轮胎制造精度。改造内容包括增加帘布筒径向贴合鼓,或在一段成型机上增加帘布供料架,增加二段成型装置;增加带束层纤维帘布裁断机,借用带束层全钢帘布裁断机。胎体采用纤维帘线,带束层采用纤维帘线或钢丝帘线,通过生产全纤维子午线或半钢子午线轮胎,实现斜交轮胎产品的更新换代。     

全自动子午线轮胎纤维胎体帘布裁断机的研制

介绍了全自动子午线轮胎纤维胎体帘布裁断机的性能特点和主要技术参数。该机帘布导开装置采用双工位直联式变频调速交流电机并采用了恒张力控制；以自主研制的气动离合器为垫布和帘布郑传递动力；设计了方杠锁装置，确保在旋转过程中不会脱落；裁刀小车采用伺服电机驱动齿形带沿直线导轨副运行，定位准确，运行时间短且不受气源变化影响。     

焦油一次汽化温度计算方法的探讨

利用相平衡原理得出的焦油蒸馏时一次汽化温度的计算方法,其结果与按经验公式的计算结果进行了比较,同时讨论了一次汽化温度与焦油馏分产率及二段蒸发器过热蒸汽用量的关系。     

Techniques for screening adhesives for structural applications

—Due to its chemistry, no structural adhesive system (epoxies, acrylics, etc.) is likely to offer an ideal combination of toughness, strength, moisture resistance, and ambient-temperature curing. Therefore, for effective use of adhesives in primary structures, an engineer must be able to identify adhesives that represent an optimum compromise among the different properties. In this paper, we present techniques for screening high-strength, ambient-temperature-curing adhesives for (1) moisture resistance under sustained loading and (2) fracture resistance in a way that is directly related to joint performance.     

Efficacy for Whitlockite for Augmenting Spinal Fusion

Whitlockite (WH) is the second most abundant inorganic component of human bone, accounting for approximately 25% of bone tissue. This study investigated the role of WH in bone remodeling and formation in a mouse spinal fusion model. Specifically, morphology and composition analysis, tests of porosity and surface area, thermogravimetric analysis, an ion-release test, and a cell viability test were conducted to analyze the properties of bone substitutes. The MagOss group received WH, Group A received 100% beta-tricalcium phosphate (β-TCP), Group B received 100% hydroxyapatite (HAp), Group C received 30% HAp/70% β-TCP, and Group D received 60% HAp/40% β-TCP (n = 10 each). All mice were sacrificed 6 weeks after implantation, and micro-CT, hematoxylin and eosin (HE) staining, and Masson trichome (MT) staining and immunohistochemistry were performed. The MagOss group showed more homogeneous and smaller grains, and nanopores (<500 nm) were found in only the MagOss group. On micro-CT, the MagOss group showed larger fusion mass and better graft incorporation into the decorticate mouse spine than other groups. In the in vivo experiment with HE staining, the MagOss group showed the highest new bone area (mean: decortication group, 9.50%; A, 15.08%; B, 15.70%; C, 14.76%; D, 14.70%; MagOss, 22.69%; p < 0.0001). In MT staining, the MagOss group demonstrated the highest new bone area (mean: decortication group, 15.62%; A, 21.41%; B, 22.86%; C, 23.07%; D, 22.47%; MagOss, 26.29%; p < 0.0001). In an immunohistochemical analysis for osteocalcin, osteopontin, and CD31, the MagOss group showed a higher positive area than other groups. WH showed comparable bone conductivity to HAp and β-TCP and increased new bone formation. WH is likely to be used as an improved bone substitute with better bone conductivity than HAp and β-TCP.     

Demand Increases for New Fungicides for Rice

<正> After June this year China's regions growingmiddle and late rice had widespread blastand sheath/culm blight.Such diseasesplagued 19.2 million hectares.Starting fromJuly the market for new fungicides that cancontrol blast and sheath/culm blight for ricewas more and more active.Makers of traditional pesticides for thecontrol of blast have to contend with fiercecompetition from new pesticides in marketthis year.Kitazine,iprobenfos,isoprothiolane and tricyclazole,oftenused by farmers in the past,are graduallybeing replaced by new varieties with high