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本文介绍了引进工程轮胎成型机的技术参数,国外成型机的特点和成型机压辊的控制原理。文章重点介绍了引进成型机上帘布筒、自动滚压、帘布筒反包、胎面缠绕工艺操作方面的特点,可供国产化设备参考。 相似文献
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目前 ,载重斜交轮胎产量仍然很大 ,而用于生产载重斜交轮胎的成型机多为有成型棒的老式成型机。这种成型机在成型胎坯过程中 ,帘布筒、缓冲层和胎面都存在着较大的不均匀伸张变形 ,另外还有歪斜偏差大和扣圈定位精度低等缺点。针对这种状况 ,天津橡塑机械联合有限公司用了半年多时间开发完成了新型 2 0 2 4系列斜交轮胎成型机。这种新型斜交轮胎成型机的主要技术特点是 :(1 )采用伺服电机驱动气垫式帘布筒传递环 ,将帘布筒自动悬拉到成型鼓上 ,这种新的上布筒方式既保证了布筒均匀受力伸张 ,又能达到准确定位。(2 )扣钢丝圈后的正包和反包 ,… 相似文献
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汕头市化工橡胶机械厂研究所科技人员在深入调查用户厂,广泛吸取及综合各种帘布筒贴合机的优点之基础上,设计研制出新一代帘布筒贴合机。此种贴合机有效地提高帘布筒的贴合性能,为下道工序轮胎胎圈的成型提供了合格的带有中心划线的轮胎帘布筒。 LTC—1100B帘布筒贴合机由JTC52O型减速电机驱动、驱动装置功率1kW。减速机出轴通过齿轮付直接带动贴合滚筒旋转。贴合 相似文献
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正由中国化工集团曙光橡胶工业研究设计院有限公司申请的专利(公开号CN 107878115A,公开日期2018-04-06)"一种提高胎圈耐疲劳性能的方法",涉及一种能够有效提高胎圈耐疲劳性能的方法,主要通过加强胎圈帘布筒端头结构实现,具体步骤为:(1)在整个帘布筒两端相邻两层帘布之间均设置窄胶片;(2)待各层帘布贴合成帘 相似文献
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大型工程机械轮胎的胎面花纹设计既要考虑胎面的“三耐”(耐磨、耐切割、耐刺穿)性能,又要兼顾胎面耐热和散热性能;胎体帘布选用尼龙帘线,各帘布筒采用不同的裁断角度,可避免下胎侧外层反包帘布局部打弯。无内胎大型工程机械轮胎胎圈着合直径应小于轮辋直径,其过盈量一般为4—8mm;胎圈的钢丝圈为3个以上,各钢丝圈的直径不同;胎里气密层用氯化或溴化丁基橡胶胶料;胎坯及成品均需刺孔 相似文献
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从外胎成型前的钢丝圈制造、挂胶帘布裁断、帘布筒贴合以及成型工序产生的工艺缺陷对胎圈质量的影响进行论述,提出了预防外胎成型工艺隐患的主要措施。 相似文献
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介绍皮带式帘布筒贴合机的构造和特点。皮带式帘布筒贴合机由贴合装置、传动系统、上导开装置、后导开装置、卸料装置组成,具有操作方便、卸帘布筒容易、变换帘布筒贴合周长简便的优点。 相似文献
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由益阳橡胶塑料机械集团有限公司开发、设计、生产的3.6米帘布筒贴合机已产成发货,成为国内首台最大,最宽帘布制作贴合机,该机是轮胎成型前半成品制作的设备,其优良的工艺性能为国内巨型工程胎的生产创造了条件。 相似文献
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炮弹用MCPA弹带的研制 总被引:1,自引:1,他引:0
采用水平式离心浇铸聚合成型工艺制备了铸型尼龙(MCPA)弹带,并对模具设计、成型工艺参数、水平式离心浇铸聚合成型机的结构设计、原辅材料的选择、MCPA的机械加工参数等进行了研究.所研制的MCPA弹带在压装过程中均未出现破碎、裂纹、凹陷、白色印痕等现象,完全达到了某滑膛炮炮弹用MCPA弹带的技术要求. 相似文献
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Bin Wu Jing Zheng Jian Qiu Zhi-qiang Zou Ke-bin Yan Xiao-lei Chen 《Journal of Adhesion Science and Technology》2016,30(11):1143-1164
Alternative materials are being investigated as substitution of the traditional copper rotating band, in order to solve problems associated with their mechanical and physical properties. Meanwhile, new processes for joining the rotating band on the projectile body have also to be developed because of different material physical properties. In this paper, swaging, welding, and newly developed spraying technologies for fabricating rotating band are analyzed, respectively. Quasi-static and dynamic engraving methods are presented for evaluating the performance of as-prepared rotating band. The former was performed on an 810 Material Testing System and the latter was carried out by using a specially developed gas-gun-based impact test rig. Hoop and axial direction strain gauges were positioned on the exterior of the barrel to monitor the effect of the rotating band on the barrel during engraving process. It is suggested that aluminum bronze coating prepared by the High Velocity Arc Spraying (HVAS) process should be a good candidate for application to a rotating band of medium- and large- caliber projectiles. The measured strains were found to be dependent on a set of variables, such as loading rate, band material and structure, forcing cone and rifling (land and groove) structure, bore condition (oiled or dry), etc. The loading rate has been verified as the most important factor and the essential difference among quasi-static engraving, dynamic engraving, and actual firing. 相似文献
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Valber Azevedo Perrut Luiz Cláudio de Marco Meniconi Eduardo Martins Sampaio Ney Robson Ferreira Rohem Marysilvia Ferreira da Costa 《The Journal of Adhesion》2013,89(9):849-873
ABSTRACTIn recent years, there has been an increasing interest in repairing offshore steel structures by using adhesively joined carbon fiber reinforced polymers (CFRP). For such procedure, surface preparation plays a vital role to maintain the integrity of the joint and to ensure proper load transfer. The primary surface preparation used by the oil and gas industry is the grit blasting due to its known quality. However, the logistic required is a major drawback limiting the use of adhesively joined repairs. Other surface preparation procedures available are unable to promote proper treatment. In this paper, an alternative surface preparation methodology employing a portable machine that uses rotation and impact to treat the steel surface was evaluated by quasi-static and fatigue tests of CFRP/steel adhesively bonded using the double-lap joints. The joints were prepared using non-corroded and severely corroded steel surfaces treated by grit blasting or rotating impact machine. The corroded plate was used to evaluate the efficiency of the rotating impact machine in removing deeply penetrating oxides. Test results showed that the performance of the machine was comparable to grit blasting even for the severely corroded surface with deep pitting. Corrosion in the metallic substrate impaired the quasi-static and fatigue properties. 相似文献
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简要介绍了一种自制整体硬质合金刀具数控立式旋转钝化机的基本结构和主要特点。通过钝化试验结果分析表明,所研制设备的钝化效果达到进口设备的性能指标。 相似文献
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分析胶管和电缆等纤维线绕线机的绕线过程和绕线张力,得出绕线张力变化发生在排线跃层提速的过程中,建立了恒转速模式下的绕线张力计算模型,得出绕线张力变化率正比于小线轴卷绕转速平方和线直径,并给出了恒转速控制方法的应用范围,其经济性好。与恒转速控制方法相比,当选取的小线轴卷绕转速和线直径较大时,恒线速度控制方法的绕线张力控制效果更优,但系统复杂性和成本显著提高。 相似文献