膠帶涂布機的張力控制模塊

機械論文編號:JX962  論文字數:20424.頁數:61   附任務書，開題報告，文獻綜述，外文翻譯

目  錄
第一章 緒 論 1
1.1 膠帶簡介 1
1.2 涂布機在國外的發展狀況 1
1.2.1 涂布裝置 1
1.2.2 干燥裝置 2
1.2.3 退紙卷取及換卷的拉動接紙裝置 2
1.2.4 張力自控系統 3
1.2.5 膠帶的校正 3
1.2.6傳動系統及自動控制 3
1.3 涂布機的國內發展現狀 3
1.3.1 涂布裝置 4
1.3.2 干燥裝置 5
1.4 對國內涂布機發展的總結 6
第二章 控制方案設計 8
2.1 對國內現有舊設備的分析 8
2.2涂布機的張力控制方案 8
2.2.1 張力控制方案一 9
2.3.2 張力控制方案二 10
2.3 張力控制方案的對比及確定 10
2.4 控制系統的設計 11
2.5 PLC控制系統硬件的組成選定 13
2.6 系統框架圖及各接線圖 19
2.7 觸摸屏、控制面板的設計及電源連接示意圖 21
第三章 控制軟件系統設計 28
3.1 主程序及其功能說明 28
3.2 手動/自動流程圖及其功能說明 36
第四章 特殊功能模塊調試以及資源分配清單 38
4.1 特殊功能模塊 38
4.1.1 4AD調試程序 38
4.1.2 4DA調試程序 39
4.2 資源分配清單 40
第五章 總結 46
參考文獻 47
致  謝 49

摘    要
 隨著社會的發展，膠帶在社會生產、生活中發揮著越來越重要的作用。但我國的膠帶生產卻還處于落后階段。當我們還在努力研究一些質量較低涂布技術和干燥裝置時，國外不僅有了先進涂布技術和干燥裝置，以及較高的車速，而且已經對張力自控系統、膠帶的校正、傳動系統及自動控制等多方面有了深入的研究和發明，并投入了生產。
 本畢業設計主要針對就是膠帶涂布機的張力控制模塊。為了連續穩定的生產和產品質量的提高，涂布機作業中膠帶張力的穩定是非常必要的。作業中膠帶每段的張力要求是不一樣的，如烘干階段，希望張力低些，以利于紙幅的收縮。本設計應用張力檢測裝置和自控系統，來保證膠帶張力的穩定。
 另一方面，本設計主要是對工廠現有的機器進行改造。我國舊的生產設備有上千臺,如果對這些設備進行技術改造,將會極大地提高原有設備的生產能力。同時為國家、企業節約大量資金。而且通過此次膠帶涂布機的張力控制模塊的設計，可以為以后的新型涂布機設計打下一個良好的基礎。
 據工廠的實地考察，以及國內工廠現有涂布機設備的使用情況來看，現有設備主要存在著兩大缺點：一、開環控制；二、速度難調。針對以上主要缺點，并結合工廠的實際場合以及經濟效率等多方面因素，可初步擬定張力模塊控制的設計方案，最后進行比較，得出最適合我國目前工廠采用的方案。
 當牽引帶電機（收卷處）間歇式工作時，由于有升、減速且儲料輥上下移動時膠帶的運動方向與垂直線夾角有變化，造成膠帶張力較大幅度變化。因此，當干燥室溫度較高時，膠帶就特別容易拉伸。針對這一問題，采用張力傳感器檢測收卷處的膠帶張力值，根據張力值的大小來控制氣缸的動作，使收卷處的張力值保持基本恒定，以減少膠帶的拉伸。
 系統采用閉環控制，由張力檢測裝置反饋信號構成閉環調節。當張力檢測裝置將信號傳輸給中央處理器，經過邏輯處理，將信號傳輸給執行裝置，迫使氣缸上升或下降，從而使膠帶的張力在允許范圍內，達到張力控制的目的
 關鍵詞：張力控制  涂布技術  涂布機  閉環控制 

The Tension Control System Design Of Tape Coating Machine

Abstract
 With the development of society, tape is playing an increasingly important role in social production and life. However, its production in China is still in a backward stage. When we are working hard on a number of low quality coating and drying device, foreign countries are already had not only advanced technology and dry coating devices, but high speed, not only have in-depth research and invention but also put automatic control system, correction tape, transmission and automatic control and other aspects into production.
 This paper is mainly studying the tape coating machine for tension control module. In order to stabilize production and continuous improvement of product quality, coating machine, tape tension and stability operations is necessary. Each piece of work in the tape tension is not the same requirements, such as the drying stage, hoping tension lower, to facilitate the rate of contraction of paper. In here I want to use tension detection device and automatic control system to ensure the stability of tape tension.
 On the other hand, the design of the plant is mainly to transform the existing machines. China has thousands of old sets, if transform these devices, the capacity of existing equipment will greatly improve. it will also save a lot of money for the state and enterprises at the same time. And it will lay a good foundation for the future design of new coating machine.
 According to the factory site visits, as well as domestic factories to use the existing coating machine equipment situation, there are two major drawbacks: First, open loop control; second, speed difficult to reach. The main drawback for the above, and the actual situation and the plant's economic efficiency and other factors, may get the initial development of tension module design. By the final comparison, get the most suitable option for the factory in China currently.
 When the traction belt motor (winding Office) intermittent work, due to rise, slow down and move up and down roller storage tape movement direction and the vertical angle has changed, resulting in a more substantial change in belt tension. Therefore, when the drying chamber temperature is high, tapes are particularly vulnerable stretch. To solve this problem, using tension sensors detect the winding tension value tape, according to the size of the value to control the tension cylinder action, so that the value of winding tension Department maintained almost constant, to reduce the tape tension.
 System uses closed loop control, feedback signals from the tension detecting device constitutes a closed-loop regulation. When the tension detection device will signal transmission to the central processing unit, through the logical processing, the signal transmission to the implementation of the device, forcing the cylinder up or down, so that the belt tension within the allowable range, to reach tension control.
Keywords：Tension Control  Coating Technology  Coating Machine  Closed-loop control