Instrumentation and Equipments
Vol.2 No.01(2014), Article ID:13701,8 pages
DOI:10.12677/IaE.2014.21001

The Research and Analysis of Heating Method of Laminating Machine Based on Finite Element

Yuansheng Qi, Nan Guo, Peike Yang*, Yan Wang, Xiaohua Wang, Shiying Zhao

School of Mechanical Engineering, Beijing Institute of Graphic Communication, Beijing

Email: yuansheng-qi@bigc.edu.cn, *pkyang130185@163.com

Received: Feb. 15th, 2014; revised: Mar. 5th, 2014; accepted: Mar. 11th, 2014

Abstract

Laminating machine is a kind of post-print equipment that presses a thin film on printing materials to improve the aesthetic and protective effect of product. The heating system is one of the important functional units of laminating machine. It has a great effect on laminating effect to select the appropriate temperature and the complement temperature performance of the system. Currently, there is a variety of heating methods of laminating machine in the market, the most common one of which is conducting oil circulation system, but the fluid properties easily change; that leads to the instability heating effects, therefore, it’s difficult to predict the results. This paper establishes the different temperature model of oil heating system, analyses and solves the surface temperature variation of heating cylinder by the finite element. In addition, it also proposes a new type of heating method, and then it makes the corresponding thermodynamic analysis.

Keywords:Laminating Machine, Conducting Oil, Heating Method, The Finite Element

1. 引言

2. 覆膜机加热辊加热原理及分类

3. 不同传热方式的热力学分析

3.1. 导热油循环加热系统的热力学分析

3.1.1. 计算方法

Table 1. The respective characteristics of the currently different heating methods

Figure 1. The 3D model of the conducting oil heating cylinder

Figure 2. The sectional view of the conducting oil heating cylinder

T = 100℃时，导热油的普朗特数Pr = Cp∙μ/λ = 2.22 × 103 × 2.67 × 10−3/(1.162 × 0.127) = 40.17；

Nu = cl0.023Re0.8Pr0.3其中cl = 1 + (d/l)0.7

T = 120℃时，

T = 140℃时，

3.1.2. 系统热力学分析结果

(1) 热辊外壁温度95℃，导热油100℃时，分析结果云图及节点随时间的温度变化如图4图5所示。

Table 2. The partly physical property parameters of heating cylinder

Figure 3. The heating cylinder model of conducting oil system

Table 3. The partly physical property parameters of a YD-320 domestic conducting oil

Figure 4. The temperature nephogram of section of heating roller at the 100˚C of conducting oil

(2) 热辊外壁温度115℃，导热油120℃时，分析结果云图及节点随时间的温度变化如图6图7所示。

Figure 5. The node temperature changes of heating roller over time at the 100˚C of conducting oil

Figure 6. The temperature nephogram of section of heating roller at the 120˚C of conducting oil

Figure 7. The node temperature changes of heating roller over time at the 120˚C of conducting oil

(3) 热辊外壁温度135℃，导热油140℃时，分析结果云图及节点随时间的温度变化如图8图9所示。

4. 新型热辊加热方式

4.1. 加热圈的物理参数

Figure 8. The temperature nephogram of section of heating roller at the 140˚C of conducting oil

Figure 9. The node temperature changes of heating roller over time at the 140˚C of conducting oil

4.2. 系统模型及设定仿真参数

4.3. 系统热力学分析结果

Table 4. The partly physical property parameters of heating ring

Figure 10. The roller model of new heating method

Figure 11. The temperature nephogram of the radial of heating roller

Figure 12. The system node temperature changes over time

5. 小结

1. [1]   邓普君, 等 (2010) 印刷工艺对覆膜质量的影响研究. 包装工程, 17, 152-154.

2. [2]   阮菀 (2009) 影响预涂膜覆膜质量的主要因素. 中国包装报, 2009-3-1.

3. [3]   张海燕, 等 (2010) 覆膜机热辊筒及加热系统研究. 中国印刷与包装研究, 1, 37-41.

4. [4]   徐天桂, 等 (2009) 覆膜机的加热辊. CN 200820034497.9, 2009-02-11.

5. [5]   Fletcher, L.S. and Peterson, G.P. (1992) Heat transfer cylinder. US 5119886, 1992-07-09.

NOTES

*通讯作者。