摘 要

人造板自动横向贴面热压机是人造板生产线上重要的生产设备，框架板则是整个热压机的重要组成部分。它承受了热压机工作时的全部压力。正是因为有着如此重要的作用，才不允许热压机在工作的过程中，框架板因为强度不足或是受力不均匀而发生破坏。在实际的使用过程中，由于框架板长时间承载数百吨的载荷作用，在框架板的个别位置会出现裂纹，甚至发生断裂。为解决这一问题，采用有限元方法对框架板进行受力分析，得到框架板受力后较为精确的变形和应力分布数据。

针对框架板的这一设计任务，我们采用了对比的方法，将未进行有限元优化设计的框架板与进行有限元优化设计的框架板进行了对比，通过在应力和变性方面，比较分析出受力变形情况，最终以材料最为节省为评价标准，在符合应力变形条件的一系列数据中，选出最符合要求的一组框架板数据。在整个框架板设计中，有两个设计的重点。第一：框架板参数变量的选择。框架板的受力变形情况和框架板的各个参数大小息息相关，因此，选择对框架板受力变形情况影响最为明显的参数，将会对最后有限元优化设计结果产生很大的影响。第二：框架板受力和约束的简化。在利用ansysworkbench进行有限元优化设计过程中，利用所建立的模型，将热压机在实际工作过程中的载荷和应力分布情况，最大程度的简化到框架板模型上。因此，将作用力和约束等效的还原到模型上，将对最后优化设计的结果也产生较大的影响。

在满足框架板安全工作的基础上，热压机的贴面质量也是压机评价的重要指标之一。同步机构的作用就是保证热压机的油缸和热压板在上下运动过程中，能够始终保持在同一竖直方向，使油缸做同步运动，进而使压面均匀，贴面美观。同步机构设计过程中，最为重要的一步就是选型，同步机构的种类多种多样，如何挑选出最合适的种类，将是同步机构设计的重点。

关键词：人造板热压机；有限元优化分析；框架板；同步机构

The Design of Hot Press of Automataic Horizontal Veneer of Man-made Board

ABSTRACT

Automatic horizontal weneer hot press of man-made board is an important production equipment on the production line, while the frame plate is an important part of the whole hot press. It bears the full pressure of hot press at work. Just as the reason of their importance,mechanism failure can’t happen for the insufficient strength of the frame plate or uneven force in the process of press work. In the process of practical usage, frame plate always withstand thousands of tons of load for a long time, so it will cause it to crack,and even break even fracture.In order to solve this problem,the finite element method is used to analyze the frame plate,and the more accurate deformation and the stress distribution will be obtained.

According to the design task of the frame plate, the frame plate which has not been optimized by finite element method is compared with that of the frame plate which is optimized by finite element method. Through comparison and analysis of stress and degeneration, the stress and deformation are analyzed. Finally, In order to achieve the purpose of material saving, We select a most suitable group data which meets the criteria of the stress and deformation . In the whole frame design, there are two key design. First: the selection of parameters of the frame plate. The stress and deformation of the frame plate are closely related to the parameters of the frame plate,so the choice of the most obvious parameters to stress and deformation will have a great impact to the finite element optimization design result. Second: the simplification of frame plate stress and restraint. In the use of ansysworkbench finite element optimization design process, we can simplify the load and stress distribution and then add them to the frame plate model.It will also have great influence on the results of the optimization design.

Under the normal working conditions of the hot press,veneer quality is also one of an evaluation index. The function of the synchronization mechanism is to ensure that the oil cylinder of the hot press machine and the hot pressing plate are always stay in the same vertical direction in the upper and lower motion process.

So it can make the cylinder to do the synchronous movement, and make the pressure even on the surface of the board ,then We can get an artificial board with better veneer quality.The most important step in the synchronization mechanism design process is the selection among the various types of synchronization mechanism , so how to pick out the most suitable type will be the focus of the design of the synchronization mechanism.

Key word:hot press of automataic horizontal veneer of man-made board ；

Synchronization mechanism；Finite element optimization analysis；Frame plate

目 录

1 绪论 1

1.1人造板自动横向贴面热压机概念 1

1.2人造板自动横向贴面热压机的工作原理及组成部分 1

1.3课题国内外现状 1

1.3.1贴面热压机国外发展现状 1

1.3.2贴面热压机国内发展现状 1

1.4选题的目的及意义 2

1.5人造板自动横向贴面热压机主要设计参数 3

1.6人造板贴面热压机总体结构设计 3

2 人造板贴面热压机主要结构框架设计 5

2.1框架板组整体设计..................................................................................................................5

2.2框架板设计整体思路 5

2.3 ANSYS有限元分析方法简介 7

2.4未经过有限元优化设计的框架板总体受力分析 7

2.5框架板尺寸参数初步确定 8

2.5.1确定框架板厚度t和侧壁宽H3： 8

2.5.2上横梁高度H1的确定： 9

2.5.3下横梁高度H2确定 9

2.5.4开档口处宽度H4确定： 9

2.5.5开档口处高度H6确定： 9

2.5.6结论： 10

2.6 ANSYSWORKBENCH有限元建模及求 10

2.6.1框架板有限元模型初步建立 10

2.6.2对框架板进行初步有限元分析 10

2.7改进结构框架板有限元优化设计（优化过程） 14

2.7.1优化思路 14

2.7.2确定变量： 15

2.7.3第一次有限元计算 16

2.7.4第二次有限元分析计算 22

2.8结论 25

3.同步机构的设计和选用 26