子午线轮胎成型机是实现我国轮胎子午化的重要设备，其成型 过程的自动化是提高轮胎质量与产量的重要保证。改变传统较低水 平的设备装置，实现低碳经济、绿色制造过程，需要对各个环节 机理进行系统研究。胎面裁断装置是成型机的重要部分，影响着轮 胎的质量分布、贴合强度，设备造价成本。 为提高轮胎自动化生产程度,过去二十年，许多设计者对裁断 装置进行了研制，目前应用的裁断装置主要有三种，超声波刀、圆 盘刀、热裁刀，各有特点，超声波裁切质量最好，但成本高且易损 坏；圆盘刀裁切质量较好，但其操作空间较大，调整不便并易损坏； 热裁刀结构简单，裁切质量一般，裁切过程易粘刀。目前还缺少对 裁切装置的理论研究与实验报道。 本报告以热裁刀为研究对象，采用控制温度方法从机理上进行 研究，通过模拟验证新型热裁切法的可行性。通过多项实验室实验子午线轮胎成型机裁断系统新型热裁切的可行性研究 及现场实际实验，取得了相关研究数据，主要研究及结论如下， （1） 通过对被裁切橡胶进行性能分析确定了影响裁切质量及 效率的关键因素为刀体的空间位置及界面温度，确定了胎面胶料裁 断的工艺条件——受力情况、温度、裁切速度和裁刀形状对裁断的 影响作用； （2） 对裁断的胶料建立的数学模型进行了力分析，了解胶料 裁断过程的裁切阻力作用影响因素； （3） 对裁刀进行了热分析模拟，得出裁刀的瞬态温度场温度 分布； （4） 经过对胶料模型的力分析和对裁刀的热分析后，得出相 应的设计参数，并进行了胎面胶料新型裁刀装置的总体设计； （5） 应用 Pro/E 软件对新型裁刀装置进行整个装置安装调整 过程的运动仿真，可以清晰地再现胎面裁断调整、裁断过程的动态 运动过程； （6） 对胎面胶料裁断过程进行了现场实验，得出适合胎面胶 料裁断的截面温度，实验表明，对胶料-金属界面温度控制在 70—100℃效果最好；验证了力分析和热分析的正确性及可行性。 所做研究，对我国自主研发子午线轮胎成型机的关键零部件设 计实现自动裁断系统的可靠、节能、高效、低成本具有积极作用及 重要意义。 关键词，热分析 热裁切 裁切阻力 界面温度 运动仿真子午线轮胎成型机裁断系统新型热裁切的可行性研究 RADIAL TIRE BUILDING MACHINE CUTTING SYSTEM NEW HOT CROP FEASIBILITY STUDY ABSTRACT The radial tire building machine is an important device for radial tires in China, molding process automation is important to ensure tire quality and quantity. Change the traditional lower-level installations and achieve “low-carbon economy,green manufacturing”process,it is need to research all aspects of the mechanism.Tread cutter device is an important part of the molding machine,it affects the mass distribution of tires,to fit the strength,equipment cost,cost and so on. In order to improve tire automation production levels ,in the past twenty years, many designers develop the cutting devices, currently there are three application of thecutting devices : ultrasonic knife , circular knive and heat cutter .they have Different characteristics, the quality ofultrasonic cutting is the best, but it is the high cost and fragile ; the quality of circular knives cut is better ,but its operation of space is big,the adjustment is inconvenient and easily damaged; the structure of heat cutter is simple , the quality of cutting is general , in cutting process rubber is easy to stick the knife .In present, it is lack of theoretical research and experimental reports of the cutting device . In this thesis, we make the heat cutter as the research object , use the temperature control method from mechanism research, through simulation validation of novel thermal cutting method is feasible .Through a number of laboratory experiments and field experiment , the relevant research data , the main research and conclusions are as follows : (1) determine the effect of cutting quality and efficiency through cutting the rubber performance analysis as the key factor for the cutter location and the interface temperature, determines the tread cutting conditions -- stress, temperature, cutting speed and cutting shape on cutting effect;子午线轮胎成型机裁断系统新型热裁切的可行性研究 (2) build cutting rubber mathematical model for force analysis, understand the process of cutting rubber material cutting resistance effect factors; (3) investigate the thermal analysis simulation of cutting knife, draw the knife transient temperature field distribution; (4) through to the compound model of cutter force analysis and thermal analysis, draw the corresponding design parameters, and a tread type cutter device design; (5) the application of Pro / E software to the new cutter device for the entire device installation and adjustment process of the movement simulation, we can clearly reproducing tread cutting process of cutting adjustment, dynamic movement of the process; (6) on the tread rubber material cutting process by the field experiment, the suitable tread cutting section temperature, experimental results show that: the cutting effect is the best when the adhesive / metal interface temperature control at 70 to 100℃; force analysis and thermalanalysis verify the correctness and feasibility. This research has the positive role and significance in the independent research and development of radial tire forming machine design of key parts to realize automatic cutting system which is reliable, energy saving, high efficiency, low cost in China. KEY WORDS: thermal analysis thermal cutting cutting resistance interface temperature motion simulation子午线轮胎成型机裁断系统新型热裁切的可行性研究 目录 摘要............................................................................................................I ABSTRACT ............................................................................................... II 1 绪 论 ....................................................................................................... 1 1.1 课题的背景 .......................................................................................... 1 1.2 国内外子午胎成型机的研究概况 ...................................................... 3 1.2.1 国外成型机发展现状 ....................................................................... 3 1.2.2 国内成型机发展现状 ....................................................................... 4 1.2.3 成型机裁刀系统的研究现状 ........................................................... 5 1.3 选题的意义 .......................................................................................... 6 1.4 本课题研究的内容 .............................................................................. 6 1.5 本章小结 .............................................................................................. 7 2 影响半成品胎面胶料裁断质量的主要因素......................................... 8 2.1 胎面胶料的特点及裁切的要求 ........................................................... 8 2.1.1 胎面胶料的组成和作用 .................................................................... 8 2.1.2 胎面胶料的结构形式 ........................................................................ 82.1.3 裁切胎面胶料的要求 ........................................................................ 9 2.2 受力作用对裁切胶料的影响............................................................. 10 2.3 温度对裁切胶料的影响 ..................................................................... 10 2.4 裁刀的运行速度对裁切胶料的影响................................................. 10 2.5 裁刀的空间位置对裁切胶料的影响................................................. 11 2.5.1 裁刀在 xoy（侧面）的投影对裁切胶料质量的影响................... 11 2.5.2 裁刀刀刃与下面标准线之间夹角作用关系对裁切胶料质量的影 响...............................................................................................................13 2.6 本章小结 ............................................................................................ 13 3 裁切过程中胶料和裁刀体的力分析.................................................... 14 3.1 橡胶的高弹形变与弹性理论............................................................. 14 3.1.1 平衡态高弹性的热力学解析.......................................................... 15 3.1.2 平衡态高弹性的分子统计理论 .................................................... 19 3. 2 裁切过程胶料的摩擦 ...................................................................... 24 3. 2.1 胶料裁切过程中摩擦的基本特