【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)計任務(wù)與要求 .................................................................................................. 3 相關(guān)預(yù)備知識 ...................................................................................................... 3 PLC 的定義 ............................................................................................ 3 PLC 的基本組成 .................................................................................... 3 PLC 的功能與特點 ................................................................................ 4 PLC 的應(yīng)用范圍 .................................................................................... 4 總體方案設(shè)計 ...................................................................................................... 5 機械結(jié)構(gòu)設(shè)計 .................................................................................................... 7 電機的選擇 ......................................................................................................... 7 絲杠電機的選擇 .................................................................................... 7 傳送帶電機的選擇 .............................................................................. 10 滾珠絲杠副的計算 ........................................................................................... 11 最大工作載荷 Fm的計算 .................................................................... 11 最大動載荷 C 的計算 ......................................................................... 11 額定動載荷 Ca的校核 ........................................................................ 11 剛度的驗算 .......................................................................................... 12 滾動軸承的選擇 ............................................................................................... 12 絲杠滾動軸承的選擇 .......................................................................... 13 滾筒滾動軸承的選擇 .......................................................................... 13 聯(lián)軸器的選擇 ................................................................................................... 14 傳送帶電機聯(lián)軸器的選擇 .................................................................. 14 絲杠電機聯(lián)軸器的選擇 ...................................................................... 14 灌裝機儲液箱的尺寸確定 ............................................................................... 14 .......................................................................................... 15 總體方案分析 ................................................................................................... 15 控制系統(tǒng)的 I/O 點及地址分配 ........................................................................ 15 輸入信號 I/O 點地址分配 .................................................................. 15 輸出信號 I/O 點地址分配 .................................................................. 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 行程開關(guān)的選型 .................................................................................. 18 光電傳感器的選型 .............................................................................. 18 流量計的選型 ...................................................................................... 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 .......................................................................... 20 傳送帶電機接線圖 .............................................................................. 20 絲杠電機接線圖 .................................................................................. 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 ................................................................................... 25 電氣控制系統(tǒng)流程圖 .......................................................................... 25 傳送帶前進 .......................................................................................... 26 光電傳感器開始計瓶數(shù) ...................................................................... 27 噴口下壓 ..........................................................................