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產(chǎn)品簡介
1791-24B8
1791-24B8
產(chǎn)品價(jià)格:¥1
上架日期:2019-08-15 13:02:34
產(chǎn)地:1791-24B8
發(fā)貨地:福州
供應(yīng)數(shù)量:不限
最少起訂:1個(gè)
瀏覽量:277
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    1791-24B8現(xiàn)貨 in stock! 歡迎來電咨詢~??!

    1791-24B8


    國內(nèi)的包裝生產(chǎn)線在發(fā)展初期一般只能完成物料包裝,后續(xù)的搬運(yùn)工作則由搬運(yùn)工人來完成。隨著產(chǎn)量的日益擴(kuò)大,傳統(tǒng)的人工搬運(yùn)方式顯然無法滿足需求,碼垛機(jī)械的出現(xiàn)為這一問題提供了有效的解決方案。
      碼垛機(jī)可以集成在生產(chǎn)線中,使生產(chǎn)現(xiàn)場變得智能化,可以實(shí)現(xiàn)飲料、食品、日化等行業(yè)各種作業(yè)的碼垛物流,為企業(yè)改善工作條件,減輕個(gè)人體力勞動(dòng),減員增效起到了關(guān)鍵作用。目前主流的控制系統(tǒng)采用 PLC+ 機(jī)械手的方式,對整條生產(chǎn)線的末端產(chǎn)品進(jìn)行整理、堆疊、整垛輸出等。
      目前市場上主流的碼垛線為單線輸送系統(tǒng),碼垛能力在 30~40 箱 / 分,具體的碼垛能力視貨物而異。本項(xiàng)目中設(shè)計(jì)的碼垛線為雙線輸送,碼垛能力能達(dá)到 60 箱 / 分,主要應(yīng)用在食品行業(yè)。該碼垛線通過 PLC 控制將兩條生產(chǎn)線上輸送過的產(chǎn)品分別輸送到對應(yīng)的堆疊區(qū),且通過觸摸屏可設(shè)定不同的層數(shù)采用不同的堆疊方式,如第 1 層按方式 1 堆疊,第 2 層按方式 2 堆疊,碼垛方式靈活。
      2 工藝要求
      碼垛線分為 A、B 兩線,每條線均由以下部分組成:入口輸送帶 1、入口輸送帶 2、入口輸送帶 3、分離電機(jī)、轉(zhuǎn)向電磁閥、轉(zhuǎn)向滾筒、堆疊輸送帶,出口輸送帶等;A、 B 兩線共用棧板供應(yīng)系統(tǒng)和左右棧板輸送帶等設(shè)備。碼垛線裝備實(shí)物圖片如圖 1 所示。
    貨物由入口輸送帶1進(jìn)入,經(jīng)過三個(gè)入口緩存輸送帶,輸送到分離電機(jī)處;分離電機(jī)分離后根據(jù)需要確認(rèn)是否轉(zhuǎn)向 ( 如需轉(zhuǎn)向則轉(zhuǎn)向氣缸動(dòng)作 ) 并計(jì)數(shù),PLC 進(jìn)行判斷產(chǎn)品是否已完成一列。達(dá)到一列后控制推桿動(dòng)作,將貨物整平。此時(shí),PLC 發(fā)出 DO 信號給 ABB 機(jī)械手 (ABB 機(jī)械手與 PLC 通過硬接線連接 ),機(jī)械手動(dòng)作抓取已完成碼垛的一列產(chǎn)品;當(dāng)完成一垛后,堆疊電機(jī)動(dòng)作,將已完成堆垛的貨物整垛輸出;然后棧板供應(yīng)啟動(dòng),為缺少棧板的堆疊區(qū)提供棧板,依次循環(huán)實(shí)現(xiàn)持續(xù)碼垛。其工藝流程如圖 2 所示。
     3 自動(dòng)化平臺(tái)選型
      鑒于該碼垛機(jī) I/O 點(diǎn)數(shù)較多 (DI 為 75,DO 為 40),以及電控柜空間限制的需求,在系統(tǒng)選型時(shí)采用西門子 S7-200 SMART PLC 作為主控制器,因?yàn)?S7-200 SMART 具備 60I/O 的大點(diǎn)數(shù) CPU 以及高密度擴(kuò)展模塊,并且模塊體積緊湊,能夠有效滿足以上需求。碼垛線上的轉(zhuǎn)向氣缸、滾筒等動(dòng)作頻繁,高達(dá) 20~30 次 / 分,故采用晶體管輸出類型,外接中間繼電器驅(qū)動(dòng)大負(fù)載。在HMI選型上,單線系統(tǒng)選用7寸屏即能滿足要求,但對于雙線控制系統(tǒng),需要顯示的信息更多,最終選用 10 寸屏。同時(shí),屏上集成的以太網(wǎng)接口與 S7-200 SMART 無縫連接,編程調(diào)試、設(shè)備通訊都很方便。電控系統(tǒng)配置如附表所示。
    4.1 結(jié)構(gòu)化模塊設(shè)計(jì)
      由于碼垛線控制點(diǎn)數(shù)較多,程序較大,而且各部分功能較為分明,所以在軟件設(shè)計(jì)時(shí),采用結(jié)構(gòu)化編程的理念可使程序結(jié)構(gòu)更加分明。程序設(shè)計(jì)分為主程序和子程序兩部分,主程序中 AB 兩線運(yùn)行各自調(diào)用相應(yīng)子程序。子程序主要有:開機(jī)初始化程序、各設(shè)備手動(dòng)控制程序、入口計(jì)數(shù)子程序、整列推桿初始化子程序、自動(dòng)運(yùn)行子程序、堆疊方式處理子程序、故障報(bào)警子程序、系統(tǒng)復(fù)位及數(shù)量清零等子程序組成,如圖 3 所示。

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