【摘要】：近年來,合成革行業(yè)迅速發(fā)展,我國已經(jīng)成為世界上合成革第一消費大國、生產(chǎn)大國以及進出口貿(mào)易大國。在合成革生產(chǎn)過程的涂臺環(huán)節(jié)中,主要依靠人工實現(xiàn)離型紙接頭的抬刀控制和合成革漿料的上漿工作。不僅勞動強度大,而且漿料散發(fā)的有毒氣體還會嚴重危害人體健康,造成環(huán)境污染。本文在對現(xiàn)有涂臺操作工藝與機構原理深入分析的基礎上,設計了一套合成革生產(chǎn)線自動涂臺系統(tǒng),可以方便地對現(xiàn)有涂臺進行改造,完成涂臺的自動化操作,從而實現(xiàn)涂臺過程的全自動化、密封生產(chǎn),有效的解決環(huán)境污染問題。本論文的主要研究內(nèi)容如下:(1)系統(tǒng)的整體構架設計分析了舊式涂臺的系統(tǒng)結構原理與操作流程,指出了當前系統(tǒng)中存在的不足與需要改進的地方,從而提出了將自動涂臺系統(tǒng)分為自動抬刀系統(tǒng)和自動上漿系統(tǒng)兩個子系統(tǒng)的總體設計方案,并分別闡述了這兩個系統(tǒng)技術設計路線。(2)自動抬刀系統(tǒng)設計分析了基于視覺圖像的接頭檢測基本原理,設計了基于視覺檢測的抬刀控制系統(tǒng)整體方案。通過對涂臺現(xiàn)場工藝與機械傳動結構的分析,研究了離型紙速度檢測的解決方案,研究了視覺圖像傳感器、離型紙速度、抬刀時間與位置等參數(shù)實現(xiàn)協(xié)調(diào)控制的原理與算法。最后設計了一套自動與手動相兼容的自動抬刀控制系統(tǒng),完成了系統(tǒng)的硬件設計與軟件算法程序,實現(xiàn)了抬刀位置的精確控制。(3)自動上漿系統(tǒng)設計首先結合系統(tǒng)的功能需求分析提出了以“料桶傾倒方式”倒料的設計方案;然后分別對系統(tǒng)的機械結構和電氣控制模塊進行了詳細的分析與設計,其中系統(tǒng)的機械結構部分包括上漿機械裝置和刮漿機械裝置的設計,系統(tǒng)的電氣控制部分包括數(shù)據(jù)采集模塊、輸出控制模塊以及控制器的設計;最后建立了料槽液位的控制對象模型,并鑒于PID控制算法的局限性提出了以順序控制方法為主的料槽液位控制算法,從而實現(xiàn)了料槽液位的穩(wěn)定控制。(4)現(xiàn)場調(diào)試與驗證在麗水某合成革生產(chǎn)企業(yè)對本論文所設計和研發(fā)的系統(tǒng)進行了安裝調(diào)試與驗證。試驗運行結果表明,抬刀系統(tǒng)的接頭檢測效果良好,識別率可以達到100%,抬刀、落刀動作得到了精確的控制;上漿系統(tǒng)中的料槽液位高度可以長期維持在穩(wěn)定狀態(tài);整個自動涂臺系統(tǒng)的性能穩(wěn)定、實用性強、操作簡單、封閉性能良好、完全滿足生產(chǎn)工藝要求。
[Abstract]:With the rapid development of synthetic leather industry in recent years, China has become the world's largest consumer of synthetic leather, a large country of production and import and export trade. In the stage of synthetic leather production, it mainly depends on manual control of lifting knife and sizing of synthetic leather paste. Not only the intensity of labor, but also the toxic gas emitted by slurry will seriously endanger human health and cause environmental pollution. Based on the deep analysis of the operation technology and mechanism of the existing coating platform, a set of automatic coating platform system for synthetic leather production line is designed in this paper, which can conveniently transform the existing coating platform and complete the automatic operation of the coating platform. In order to achieve the full automation of the painting process, seal production, effectively solve the environmental pollution problem. The main contents of this thesis are as follows: (1) the system structure principle and operation flow of the old painting platform are designed and analyzed, and the shortcomings of the current system are pointed out. Thus, the overall design scheme of automatic painting platform system is put forward, which is divided into two subsystems: automatic lifting tool system and automatic sizing system. The two systems are described respectively. (2) the automatic tool lifting system is designed and analyzed the basic principle of joint detection based on visual image and the overall scheme of lifting tool control system based on visual detection is designed. Based on the analysis of the field technology and mechanical transmission structure of the coating platform, the solution of the speed detection of the release paper is studied, and the principle and algorithm of the coordinated control of the parameters such as the visual image sensor, the speed of the release paper, the time and the position of the lifting cutter are studied. Finally, a set of automatic lifting tool control system is designed, which is compatible with manual control system. The hardware design and software algorithm program of the system are completed. The accurate control of the position of the lifting cutter is realized. (3) the design of the automatic sizing system is first put forward with the analysis of the functional requirements of the system. Then the mechanical structure and electrical control module of the system are analyzed and designed in detail. The mechanical structure of the system includes the design of sizing mechanism and scraping mechanism. The electrical control part of the system includes data acquisition module, output control module and controller design. In view of the limitation of PID control algorithm, this paper puts forward the control algorithm of feed tank liquid level, which is mainly based on sequential control method. Thus the stable control of the liquid level in the feed tank is realized. (4) the system designed and developed in this paper is installed and tested in a synthetic leather production enterprise in Lishui. The test results show that the joint detection effect of the lifting system is good, the recognition rate can be up to 100, the lifting and dropping of the knife can be controlled accurately, and the height of the liquid level of the feed slot in the sizing system can be maintained in a stable state for a long time. The system has the advantages of stable performance, strong practicability, simple operation and good sealing performance.
【學位授予單位】：杭州電子科技大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TP278

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