昊光LAP系列数控激光标线仪

随着对轮胎质量要求的不断提高,轮胎成型激光定位装置得到了越来越广泛的应用。但国内激光标线设备存在比较大的不足,针对大型和巨型工程胎成型机的激光标线仪还没有生产。据此,全国橡胶塑料设计技术中心设计开发出昊光LAP系列数控激光标线仪,最大灯标有效宽度可达4500mm。介绍了该产品的技术参数和主要特点。     

全钢载重子午线轮胎成型机的发展状况

介绍了９０年代国外几家橡胶机械厂推出的全钢载重子午线轮胎成型机新的设计特点,并与８０年代国内进口的两种典型成型机机型进行比较。新型成型机不仅将主成型鼓的功能一分为二,增加胎体贴合鼓,与带束层贴合鼓一起同时动作,提高了成型效率,而且主成型鼓实现了全机械反包,降低了成本,轮胎的均匀性也得到了提高     

几种全钢载重子午线轮胎成型机的对比分析

对几种全钢载重子午线轮胎成型机——荷兰VMI公司的四鼓成型机和三鼓成型机、天津赛象科技股份有限公司的两鼓成型机和三鼓成型机、北京航空制造工程研究所的三鼓成型机进行分析与比较。在电气配置、机械结构和生产工艺上这几种成型机各有特点。     

对MATADOR成型机的几点改造

在使用MATADOR TR3型全钢丝载重子午线轮胎成型机的过程中,存在复合件裁切质量不好,带束层裁刀架晃动,胎体传递环钢丝圈夹臂连杆设计过小且单根连杆不能调节,子口包布贴合打褶,胎侧复合、胎体帘布贴合偏歪等问题,经改造后,取得了一定的效果。     

BRL激光标线系统在轮胎成型机上的应用

由于原先的激光标线系统厂家程序保密,机械结构老化等问题给后期故障维护,精度保证带来了很大的困难,所以用BRL激光标线系统对其进行替换,并对电气的硬件接线与软件编程进行了相关的应用介绍。     

全钢载重子午线轮胎成型机板式供料架改造

介绍在使用两鼓式预复合全钢载重子午线轮胎成型机的过程中,存在的肩垫胶贴合偏歪问题,并针对这一问题进行了分析和有效的改造。将肩垫胶供料架改造成板式供料架,改造后基本消除了肩垫胶贴合的偏歪问题,提高了成型机自动化程度。     

LCZ-G全钢丝载重子午胎高效成型机带束层供料架的改造

<正>笔者所在公司全钢成型工序有两台LCZ-G全钢丝载重子午胎高效成型机,用于全钢丝载重子午线轮胎的胎胚一次法成型,具有效率高、更换轮胎规格容易、操作灵活方便等优点。该机为三鼓成型机,设备主要机械构成有辅助鼓、成型鼓、贴合成型鼓,以及为在各个鼓上完成胎胚复合成型的胎体供料架、带束层供料架等其它装置。在多年的生产使用中,发现该成型机带束层供料架动作烦琐、维修点多、故障率高,大大影响了该机台的成型班产量。笔者对该成型机带束层供料架装置从机械结构上进行了改造,从根本上解决了故障的发生,有效提高了成型产量。     

可编程序控制器在进口轮胎成型机改造中的应用

在进口轮胎成型机的改造中,使用国产ＳＲ－２１可编程序控制器（ＰＬＣ）替代原机所用的ＳＭＣ２５ＰＬＣ,机器的电气系统部分傺出现过故障。重点介绍了ＳＲ－２１ＰＬＣ的硬件及软件设计。     

SS2024C全钢丝子午线轮胎一次法成型机的安装

全钢丝载重子午线轮胎一次法成型机，目前主要靠引进。成型机的装备精度及安装质量，对轮胎的胎坯质量影响较大。本文介绍了日本三菱重工引进的ＳＳ２０２０Ｃ全钢丝子午线轮胎一次法成型机的安装程序、安装方法和安装技术要求。     

全钢载重子午线轮胎成型机的改造

对全钢载重子午线轮胎成型机中存在的超声波裁刀运行不稳定、胎圈补强带贴合定位装置精度低、带束层定长装置不稳定和钢丝圈撞帘布的问题进行原因分析并采取相应解决措施.成型机改造后,全钢载重子午线轮胎的产量和质量均得到较大提高,且设备运行更加平稳.     

轮胎全自动打号机控制系统的研制

具体介绍了自行研制的轮胎全自动打号机的系统构成及原理。并给出控制系统程序框图及主程序，以及相关控制原理圈和该机工作过程。使用该机，使企业的管理水平得以提高。     

Plastic films with improved adhesion on integrated circuit packages for laser marking

Various plastic films of a melting point above 170°C were selected for IC package in laser marking. These films include: (1) polyacetal, (2) polycarbonate, (3) polyester, and (4) nylon. They are in a form of a homogeneous layer, polymer blend, or multilayer structure. The plastic films were plasma treated and laminated onto the molded compound through transfer molding process. No extra process was introduced except for slight modification of the mold for film placement. The film molded IC package was evaluated in terms of adhesion, laser marking, and thermal and humidity resistance. Design of experiment was employed for the adhesion study. The results indicated that the polymeric material and film thickness were the key parameters affecting film adhesion. Careful selection of the plastic film made it possible for self‐triming during product ejection. Two kinds of plastic films, namely, nylon and polyester, were finalized as laser markable and moldable materials. The laser marking effects of the film‐molded packages were comparatively better than those of the nonfilm‐molded packages. These two films were molded into IC packages and tested for thermal and humidity resistance. The results showed that polyester film‐molded packages exhibited superior reliability in thermal shock tests (1000 cycles) and unbias cooker tests (72 h). © 2002 John Wiley & Sons, Inc. J Appl Polym Sci 84: 758–766, 2002; DOI 10.1002/app.10321     

HD成型机控制系统改造

广州华南橡胶轮胎有限公司大胎成型工区HD成型机设备故障高,备件已早停产。本文介绍了对HD成型机整套控制系统的改造方案。用三菱PLC搭配三菱运动处理器和三菱伺服驱动器实现成型机各鼓及皮带伺服控制,同时加装触摸屏增加规格配方编辑查看功能。本文对硬件配置、PLC组态、伺服控制系统的编程、MT-DEVELOPER软件应用、触摸屏编程等作了详细说明。     

Design of a high-throughput device for screening surface modification protocols

The development of new high performance, ultra-thin organic coatings requires a strategy that has to consider a large number of surface treatment variables such as binding moieties, substrate, and adsorption conditions (e.g. temperature, solvent, concentration, pH, salt). The optimization of the latter is often the bottleneck of the entire development process and restricts the number of parameters that can be tested with acceptable effort. Here we present a screening platform for the efficient, parallel testing of various surface modification protocols, based on an array of 70 wells for individual adsorption experiments with a volume of 20 μL each (SuMo device). The device performance was validated using the copolymer poly(l-lysine)-grafted-poly(ethylene glycol) (PLL-g-PEG) that adsorbs on negatively charged surfaces, rendering them non-fouling in contact with proteins such as fibrinogen. The latter functionality was tested by a second adsorption step of FITC-labelled fibrinogen; polymer and protein thickness values, measured by spectroscopic ellipsometry were used as a measure for the quality of the polymer adlayer. The results obtained are in excellent agreement with traditional coating methods using single chips for each parameter set. A further improvement in the efficiency of the surface modification experiments resulted from the use of a fluorescence read out of the fibrinogen adsorption. Measurements with a microarray scanner proved to be very fast providing uniform fluorescence images with low bleaching rate and high detection sensitivity. The results of the fluorescence readout correlated with the ellipsometry data with a lower limit of detection of ca. 2% of a saturated layer for both techniques. The readout data of the SuMo device were further compared with the quantitative results from in situ optical waveguide lightmode spectroscopy (OWLS) and successfully validated by testing the dependence of fibrinogen coverage as a function of fibrinogen solution concentration. Finally, to demonstrate its application feasibility, the array device was applied to study the polymeric surface layer stability under a range of harsh conditions (14 > pH > 1, ionic strength up to 5.3 M NaCl).