【作者】 郝为建；

【导师】 唐跃； 吕柏源；

【作者基本信息】 青岛科技大学 ， 化工过程机械， 2008， 硕士

【摘要】 随着现代化建设的日益加快,人民生活水平的不断提高,我国对实心轮胎的需求量越来越大,质量的要求也越来越高,高质量的实心轮胎则需要由高品质的橡胶成型硫化设备来保证。因此,一个企业能否高效率的生产出高质量的实心轮胎在很大程度上取决于实心轮胎成型硫化设备的水平。目前国内外成型实心轮胎的方法主要有传统的模压法、缠绕法、离心浇注法和注射法等。但这些成型方法和设备存在如下问题:一是模压法和缠绕法都属于一种将预先得到的胶片进行贴合的工艺,其制造工艺复杂、使用设备多、消耗能量大,且胶层之间致密性差,容易出现脱层现象;二是因分子结构特性的因素聚氨酯实心轮胎内生热现象比较严重,并且其动态性能和抗滑性能差以及原材料成本高等,这些不利因素阻碍了聚氨酯实心轮胎的推广。为了适应市场对实心轮胎成型硫化设备的需求,解决对制品“高效、高质、低耗、低成本”的要求,本文在深入研究了各种实心轮胎成型硫化设备的特点和性能的基础上,全新设计了两工位实心轮胎一步法注射成型硫化机组。本论文的主要成果如下:(1)首次采用一步法注射技术成型实心轮胎,提高了实心轮胎的质量和生产效率。(2)注射成型硫化机具有两工位整体式结构,整机不仅生产效率高,而且整体受力合理、变形小、工作精度高,同时结构紧凑,占地面积小,可用于大、中、小型容量制品的注射成型硫化。一套注射装置进行两工位的依次注射,每个工位的锁模和脱模装置独立工作,完成制品的保压硫化以及脱模,具有操作自动化和生产连续化的特点。(3)设计了弹簧缓冲装置和开放式轴承座,提高了压力传感器控制精度和可靠性,解决了螺旋锁模机构偶发卡死时无法卸荷的难题。(4)注射胶料口的下移解决了传统注射过程中流道受力不均产生漏胶的问题。(5)压合装置丝杠的轴线与注射装置螺杆的轴线在同一直线上,使注射机无偏心力矩,提高了注射机的对中性能。(6)电磁离合器和滚珠丝杠的配合使用巧妙提供了清理流道内胶料的空间,提高了自动化操作水平。(7)设计中运用了先进的数字传感技术,以实施对机头压力、锁模力和压合力的检测,实现胶料的信息定量和压合装置的数字操作,使设备运行安全可靠,易于实现自动化。(8)运用传统设计、有限元分析、三维造型设计和三维过程模拟相结合的设计手段,充分体现了设计与制造同步的现代设计理念。综上所述,两工位实心轮胎一步法注射成型硫化机组具有现有成型实心轮胎设备所不具备的诸多优点,具有明显的创新性。更多还原

【Abstract】 With rapid development of modernization and the continuous improvement of people’s living standards, Chinese demand for solid tire is growing, and so are the quality requirements. High-quality solid tire should be guaranteed by the high-quality rubber vulcanization molding equipment. As a result, that if a highly efficient enterprise can produce high-quality solid tire depends largely on the level of solid tire vulcanization molding equipment. Up to now, forming solid tire at home and abroad mainly use the traditional method of molding, winding, centrifugal casting method and the injection method, which, however, exist the following problems by varying degrees: firstly, both molding and winding methods are process that the rubber sheets will be carried out prior for attaching. Their manufacturing process is complex, the use of equipment and energy consumptions are too much, the compactness between rubber layers is bad, and the layers can fall off easily. Second, because of the molecular structure, the internal heat generation of polyurethane solid tire is quite serious. The poor dynamic performance, poor anti-slide performance and high prices of raw material hinder the promotion of polyurethane solid tire.In order to adapt to the market needs for the solid tire vulcanization molding equipment and satisfy the requirements for "highly efficiency, high quality, low power consumption, low cost", this paper newly designed two station solid tire one-step injection molding vulcanization set basing on the study of a variety of solid tire vulcanization molding equipments and performance characteristics. In this paper, the main results are as follows:(1) For the first time one-step injection molding technique is applied to the production of solid tire, which improves the quality and production efficiency of solid tire.(2) Owning to the two-station integral structure, injection molding curing press, which can be used for large, medium and small capacity injection molding products vulcanization, not only has high efficiency and overall reasonable force, small deformation, highly precision work, but also has compact structure and small occupation area. A set of injection devices inject with two stations in order, each of which mode-locking and demoulding device work independently, and complete the vulcanization and demoulding,which has continuous automation characteristics。(3) The design of the spring buffer and open bearing chock increase the pressure sensor’s control precision and the reliability, and solve the problem of unable unloading when the spiral clamping device is jammed accidentally.(4) The downward movement of rubber injection entrance resolves the rubber leakage caused by the non-uniform flow channel stress in traditional injection process.(5) Centerlines of the lead screw in pressing device and the screw in injection device are of coincidence. This structure makes the injection have no eccentric torque and improves the alignment performance.(6) Electromagnetic clutch and the ball screw provide ingeniously the place for cleaning the trash in the channels, which increase the operational automation level.(7) The machine uses advanced digital sensing technology to detect the nose pressure, clamp force and axial force, which achieve compound quantitative information and digital operation of installations of pressure, so that the operation of equipment is safer and more reliable, in addition, it’s easy to realize automation.(8) The paper uses traditional design method, Finite Element Analysis Method, three-dimensional forming design and three-dimensional process simulation together, which fully reflects the synchronous design with manufacture of modern design concept.In summary, the two-station solid tire one-step injection molding vulcanization set has a lot of advantages that the existing solid tire molding equipments do not own, and obviously, it is innovative.更多还原