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对原使用B40锭子的钢丝帘布压延生产线进行改进,将B40锭子形式改进为B80锭子形式并增设了张力辊装置,使每一批次锭子可减少一次钢丝帘线浪费,在自制张力辊的作用下还可生产至最短钢丝帘线离开张力辊,大大节省了钢丝帘线浪费;通过对原整经器改进,使钢丝帘线在梭形板上相互交叉排列,可防止钢丝帘线移位和跳动,杜绝了生产中钢丝帘线的交叉问题。 相似文献
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介绍了钢丝帘布压延线上辅机锭子张力装置、电磁吸盘及整经压力辊的设计与应用情况。张力控制装置采用重锤式结构,重锤重量按公式P=F1D2df计算。电磁吸盘装置主要由机架、导辊、轴承、电磁吸盘和电控箱组成,左右两个靠近电磁吸盘的导辊调整的最佳高度是:在运行过程中大部分帘线与磁盘表面平行,只有个别张力值小于电磁吸力的帘线被磁盘吸附在其表面或处于若即若离的状态。整经压力辊装置主要由交叉板、整经辊、压力辊等组成。整经辊的沟槽深度等于帘线直径,压力辊的沟槽深度为帘线直径的一半。一般调整压力辊与3#辊筒的间隙略小于所给的胶片厚度 相似文献
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分析全钢载重子午线轮胎压延钢丝帘布常见问题,并提出相应控制措施。通过采取稳定压延速度,保证胶料混炼均匀,合理设计胶片厚度、辊距和辊筒挠度变形补偿参数,规范钢丝帘线锭子绕线、导开、拉线和排线等操作及电磁控制尾丝张力等措施,提高钢丝帘布压延工艺控制水平。 相似文献
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在胶帘布压延工艺过程中,帘布上胶前后张力的大小及其稳定程度是重要的受控技术指标。在压延过程中,影响张力稳定的因素有:帘布的不均匀性、辊筒的不圆性、辊轴的曲摆、辊温的波动、胶料特性的波动、张力仪的精度与稳定性、整流调速系统的精度与稳定性、机械传动部分的阻滞以及干燥机、压延主机、后冷却机这三电机不同速度段的非线性等等。压延联动线速度是以压延主机为基准的。前张力的产生来源于干燥机比主机慢;后张力的产生来源于冷却机比主机快。速差的稳定是矛盾的主要方面,是保证张力稳定的基础。 通常,人们使用一个统一的调速… 相似文献
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介绍了芳纶纤维的性能及其浸渍帘布的捻织和浸渍工艺 ,并分析了影响芳纶帘线断裂强度保持率的因素。芳纶纤维具有高模量、高断裂强度、低热收缩率和低断裂伸长率 ,是轮胎的理想骨架材料 ;通过采用不同的复捻与初捻比、初捻和复捻速度分别为 40 0 0和 5 0 0 0r·min- 1 及选用光环气圈环等措施可使芳纶帘线的断裂强度保持率由60 .4%提高到 81.2 % ;在芳纶生产中采用“双浴法”浸渍工艺、以封闭TDI为浸渍液、控制浸渍过程中的热处理时间和温度可保证芳纶浸渍帘线良好的性能。 相似文献
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介绍降低锦纶帘布损耗的方法.结果表明,通过采取将立式裁断机定轴刚性传动部分改为链条传动,增大边角料回收利用力度,调整中间卷取的衬布卷支架位置及严格执行操作规程等措施,锦纶帘布平均报废率从9.83%下降为5.65%. 相似文献
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Xianguo Li Hangqi Jiang Houbiao Long 《Journal of Adhesion Science and Technology》2018,32(20):2268-2281
The splice is the weakest part of the entire steel cord conveyor belt. And it occurs steel cord twitch fault frequently. If this fault cannot be dealt with timely and accurately, broken belt accidents would be occurred that affecting the safety of production seriously. In this paper, we investigated the different cord pitch pullout of the steel cord conveyor belt splice by using ABAQUS. The finite element model of the ST630 type steel cord conveyor belt was established, same as to the standard of the experimental sample. The pullout force of length 50.0, 70.0, 80.0 and 100.0 mm single steel cord impacted at steel cord conveyor belt splice was numerically computed respectively. The finite element model consists of rubber, steel cord and failure unit. Failure unit is used to simulate the bonding relationship between steel cord and rubber. Mooney-Rivlin hyper-elastic model for rubber was employed in the numerical simulations. Typical results obtained have been validated by experimental result and the relative error between simulation results and experimental results is within 10%. Simulations were also done for cord pitch of 4.0, 4.5, 6.0, 7.0 and 8.0 mm to study its effect on the pullout force of steel cord conveyor belt splice. The variation of cord pitch at normal impact was found to have influence as long as the cord pitch was different. It provides us the numeric value of the pullout force with the different cord pitch, and conducts us selecting the correct steel cord configuration spacing for the steel cord conveyor belt splice, as well for the steel cord conveyor belt. This is an efficient way for avoiding the steel cord twitch fault and the broken belt accident, while ensuring their high reliability and service life. 相似文献
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H. Kern 《Fibre Chemistry》1995,26(4):280-281
Translated from Khimicheskie Volokna, No. 4, pp. 64–66, July–August, 1994. 相似文献