【正文】 lling machine. Not only improve the labor productivity, but also has farreaching significance of the improvement of quality and yield. PLC control of the use of beverage filling production process, which can effectively improve the production efficiency of filling, and significantly increase the reliability of control systems and flexible. Keywords: Programmable controller； Automation； Filling； Production line 目 錄 摘 要 ........................................................................................................................ I ABSTRACT ................................................................................................................. II 前 言 .............................................................................................................................. 1 ............................................................................................................................. 2 概論 ...................................................................................................................... 2 設(shè)計(jì)任務(wù)與要求 .................................................................................................. 3 相關(guān)預(yù)備知識(shí) ...................................................................................................... 3 PLC 的定義 ............................................................................................ 3 PLC 的基本組成 .................................................................................... 3 PLC 的功能與特點(diǎn) ................................................................................ 4 PLC 的應(yīng)用范圍 .................................................................................... 4 總體方案設(shè)計(jì) ...................................................................................................... 5 機(jī)械結(jié)構(gòu)設(shè)計(jì) .................................................................................................... 7 電機(jī)的選擇 ......................................................................................................... 7 絲杠電機(jī)的選擇 .................................................................................... 7 傳送帶電機(jī)的選擇 .............................................................................. 10 滾珠絲杠副的計(jì)算 ........................................................................................... 11 最大工作載荷 Fm的計(jì)算 .................................................................... 11 最大動(dòng)載荷 C 的計(jì)算 ......................................................................... 11 額定動(dòng)載荷 Ca的校核 ........................................................................ 11 剛度的驗(yàn)算 .......................................................................................... 12 滾動(dòng)軸承的選擇 ............................................................................................... 12 絲杠滾動(dòng)軸承的選擇 .......................................................................... 13 滾筒滾動(dòng)軸承的選擇 .......................................................................... 13 聯(lián)軸器的選擇 ................................................................................................... 14 傳送帶電機(jī)聯(lián)軸器的選擇 .................................................................. 14 絲杠電機(jī)聯(lián)軸器的選擇 ...................................................................... 14 灌裝機(jī)儲(chǔ)液箱的尺寸確定 ............................................................................... 14 .......................................................................................... 15 總體方案分析 ................................................................................................... 15 控制系統(tǒng)的 I/O 點(diǎn)及地址分配 ........................................................................ 15 輸入信號(hào) I/O 點(diǎn)地址分配 .................................................................. 15 輸出信號(hào) I/O 點(diǎn)地址分配 .................................................................. 16 電氣元件選型 ................................................................................................... 17 PLC 的選型 .......................................................................................... 17 斷路器的選型 ...................................................................................... 17 接觸器的選型 ...................................................................................... 18 行程開(kāi)關(guān)的選型 .................................................................................. 18 光電傳感器的選型 .............................................................................. 18 流量計(jì)的選型 ...................................................................................... 19 電磁閥的選型 ...................................................................................... 19 電氣控制系統(tǒng)原理圖 ....................................................................................... 20 電氣原理圖總體設(shè)計(jì) .......................................................................... 20 傳送帶電機(jī)接線圖 .............................................................................. 20 絲杠電機(jī)接線圖 .................................................................................. 21 電磁閥接線圖 ...................................................................................... 22 控制系統(tǒng)接線圖 .................................................................................. 22 .......................................................................................... 23 STEP7MICRO/WIN 軟件介紹 ........................................................................ 23 電氣控制系統(tǒng)程序設(shè)計(jì) ................................................................................... 25 電氣控制系統(tǒng)流程圖 .......................................................................... 25 傳送帶前進(jìn) .......................................................................................... 26 光電傳感器開(kāi)始計(jì)瓶數(shù) ...................................................................... 27 噴口下壓 ..........................................................................