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中國(guó)地質(zhì)大學(xué)長(zhǎng)城學(xué)院
本 科 畢 業(yè) 設(shè) 計(jì)
題目 棒棒糖自動(dòng)包裝機(jī)理糖機(jī)構(gòu)傳動(dòng)裝置設(shè)計(jì)
系 別 工程技術(shù)系
專 業(yè) 機(jī)械設(shè)計(jì)制造及其自動(dòng)化
學(xué)生姓名 李巍
學(xué) 號(hào) 05308316
指導(dǎo)教師 牛博英
職 稱 助教
2012年 5 月 2 日
中國(guó)地質(zhì)大學(xué)長(zhǎng)城學(xué)院2012屆畢業(yè)設(shè)計(jì)
前言
隨著包裝機(jī)的廣泛使用,食品的包裝效率得到了很大提升,產(chǎn)量提升得很快。但是,最初使用的包裝機(jī)基本上是靠工人手工供料,還是無(wú)法根本解決食品的包裝效率問題,工人的工作量并沒有因?yàn)榘b機(jī)的應(yīng)用而減少。并且由于是工人手工供料,在一定程度上存在著食品的衛(wèi)生安全問題,這種包裝機(jī)被稱為半自動(dòng)包裝機(jī)。自動(dòng)包裝機(jī)的產(chǎn)生在很大程度上解決了工人工作量大的問題。自動(dòng)包裝機(jī)與前者相比,擁有了自動(dòng)供料及理料裝置,棒棒糖自動(dòng)包裝機(jī)就是自動(dòng)包裝機(jī)的一種。其理糖機(jī)構(gòu)能夠通過自身的圓錐形理糖盤的旋轉(zhuǎn)和配有伺服電機(jī)的毛刷的配合來(lái)將棒棒糖整理為統(tǒng)一姿態(tài),并且送至輸送機(jī)構(gòu)取糖處。在理糖機(jī)構(gòu)中,理糖盤是極為關(guān)鍵的部件,本次設(shè)計(jì)就是為理糖盤的旋轉(zhuǎn)設(shè)計(jì)傳動(dòng)裝置。
1設(shè)計(jì)要求
原始數(shù)據(jù):理糖盤轉(zhuǎn)速4.3r/min,理糖盤轉(zhuǎn)速允許誤差±5%,工作所需功率0.3kw;
工作條件:室內(nèi),無(wú)塵,三班工作制,要求使用壽命12000h;
動(dòng)力來(lái)源:電力,三相交流,電壓380v;
制造條件及生產(chǎn)批量:一般機(jī)械廠制造,小批量生產(chǎn)。
傳動(dòng)要求:實(shí)現(xiàn)水平放置的電動(dòng)機(jī)的垂直轉(zhuǎn)矩通過該設(shè)計(jì)轉(zhuǎn)換成水平轉(zhuǎn)矩。
2總體方案分析
由設(shè)計(jì)要求可知,電動(dòng)機(jī)所輸出的轉(zhuǎn)矩通過減速裝置的傳遞,最終達(dá)到將轉(zhuǎn)矩的傳遞方向向上改變90°,并將其傳遞給理糖盤。所以傳動(dòng)裝置中確定傳動(dòng)方案為,由電動(dòng)機(jī)輸出轉(zhuǎn)矩,通過聯(lián)軸器與減速裝置的高速軸相連,由高速軸傳遞給低速軸,再由低速軸傳遞給蝸桿軸,最終由蝸輪蝸桿配合,從蝸輪軸將水平轉(zhuǎn)矩輸出給理糖盤,實(shí)現(xiàn)其轉(zhuǎn)動(dòng)。
減速器部分是本設(shè)計(jì)的重點(diǎn)設(shè)計(jì)部分,本設(shè)計(jì)中的減速器是二級(jí)圓柱齒輪減速器配合蝸輪蝸桿的復(fù)合型減速器。其結(jié)構(gòu)相對(duì)簡(jiǎn)單,但齒輪的位置不對(duì)稱。高速級(jí)齒輪布置在遠(yuǎn)離轉(zhuǎn)矩輸入端??墒馆S在轉(zhuǎn)矩作用下產(chǎn)生的扭矩變形和軸在彎矩作用下產(chǎn)生的彎曲變形部分相互抵消,以減緩沿齒寬載荷分布不均勻的現(xiàn)象。蝸輪蝸桿的配合可以最大程度上增加傳動(dòng)比,減小齒輪的直徑和加工難度,最高效地實(shí)現(xiàn)轉(zhuǎn)矩的傳遞。
3選擇電動(dòng)機(jī)
3.1電動(dòng)機(jī)的類型和結(jié)構(gòu)的選擇
本傳動(dòng)的工作狀況是:三班制,工作環(huán)境無(wú)塵干凈,380v交流電。
根據(jù)條件查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定選用Y系列全封閉自扇冷式籠形三相異步電動(dòng)機(jī)。
3.2電動(dòng)機(jī)的容量
3.2.1工作機(jī)所需功率
由設(shè)計(jì)要求可知, =0.3kw
3.2.2計(jì)算傳動(dòng)裝置總效率
由于動(dòng)力經(jīng)過一個(gè)傳動(dòng)副或者運(yùn)動(dòng)副就會(huì)發(fā)生一次損失,故多級(jí)串聯(lián)總效率
公式(1)
本設(shè)計(jì)中
————聯(lián)軸器(共兩個(gè)) =0.99
———滾動(dòng)軸承(共8個(gè)) =0.98
————圓柱齒輪(共2對(duì))=0.96
————蝸桿傳動(dòng) =0.75
將上述各值代入公式(1)中
電動(dòng)機(jī)效率 公式(2)
3.2.3確定電動(dòng)機(jī)
表1 電動(dòng)機(jī)預(yù)選方案
方案
電動(dòng)機(jī)型號(hào)
滿載轉(zhuǎn)速
總傳動(dòng)比
1
Y112M2-4
1440
334.88
2
Y90S-6
910
211.63
3
Y132S-4
1440
334.88
由于考慮到傳動(dòng)方案以及加工成本,所以比較三個(gè)方案,選擇方案2比較合適。
4確定傳動(dòng)比
總傳動(dòng)比 i=211.63
首先確定蝸輪蝸桿傳動(dòng)比
所以
由于輸入軸與電動(dòng)機(jī)之間靠聯(lián)軸器連接,所以輸入軸傳動(dòng)比
考慮到兩級(jí)齒輪潤(rùn)滑問題,兩級(jí)大齒輪應(yīng)有相近的浸油深度。兩級(jí)齒輪減速器高速級(jí)傳動(dòng)比與低速級(jí)傳動(dòng)比 的比值取為1.3。
即
所以 ;
5確定各軸的動(dòng)力參數(shù)
5.1各軸轉(zhuǎn)速的計(jì)算
輸入軸轉(zhuǎn)速
中間軸轉(zhuǎn)速
蝸桿軸轉(zhuǎn)速
蝸輪軸轉(zhuǎn)速
5.2各軸輸入功率的計(jì)算
電動(dòng)機(jī)的輸出功率
輸入軸的輸入功率
中間軸的輸入功率
蝸桿軸的輸入功率
蝸輪軸的輸入功率
5.3各軸輸入轉(zhuǎn)矩的計(jì)算
公式(3)
將已知條件代入公式(3)中
輸入軸的轉(zhuǎn)矩
中間軸的轉(zhuǎn)矩
蝸桿軸的轉(zhuǎn)矩
蝸輪軸的轉(zhuǎn)矩
6高速級(jí)齒輪設(shè)計(jì)
6.1選定齒輪類型、精度等級(jí)、材料及齒數(shù)
6.1.1齒輪類型的選擇
考慮到動(dòng)力的傳遞沒有方向的變化以及節(jié)約加工成本,查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定齒輪類型選擇為直齒。
6.1.2齒輪精度選擇
由于棒棒糖自動(dòng)包裝機(jī)屬于一般工作機(jī),所以理糖盤轉(zhuǎn)速比較低,因此選用7級(jí)精度。
6.1.3齒輪材料的選擇
小齒輪材料選為40Cr,調(diào)質(zhì)處理,處理后硬度為280HBS。大齒輪材料選為45鋼,調(diào)質(zhì)處理,處理后硬度為240HBS,且兩者硬度差40HBS。
6.1.4齒輪齒數(shù)選擇
小齒輪齒數(shù) ;
大齒輪齒數(shù) ,取=81
6.2計(jì)算
6.2.1按齒面接觸強(qiáng)度計(jì)算
公式(4)
查《機(jī)械設(shè)計(jì)》確定式中各值
載荷系數(shù) ;
小齒輪傳遞的轉(zhuǎn)矩 ;
齒寬系數(shù) ;
材料的彈性影響系數(shù) ;
按齒面硬度確定小齒輪的接觸疲勞強(qiáng)度極限
;
按齒面硬度確定大齒輪的接觸疲勞強(qiáng)度極限
;
通過盈利循環(huán)次數(shù)確定接觸疲勞壽命系數(shù)
確定使用壽命系數(shù) ;
;
確定疲勞許用應(yīng)力
失效概率為1%,安全系數(shù)S=1
則
將所確定的各值代入公式(4)中,
為便于加工,以及后續(xù)齒輪和軸系的設(shè)計(jì),取模數(shù)m=2;
則
確定齒輪寬度及中心距
中心距
齒輪寬度
6.2.2按齒根彎曲強(qiáng)度計(jì)算
公式(5)
查《機(jī)械設(shè)計(jì)》確定公式(5)中各值
確定小齒輪的彎曲疲勞強(qiáng)度極限
確定大齒輪的彎曲疲勞強(qiáng)度極限
確定齒輪的彎曲疲勞壽命系數(shù)
確定彎曲疲勞許用應(yīng)力
確定載荷系數(shù)K
確定齒形系數(shù)
確定應(yīng)力校正系數(shù)
確定兩齒輪的,并比較大小
比較后,大齒輪的數(shù)值大。
將各值代入公式(5)中
考慮到便于加工,取m=2
最終確定高速級(jí)齒輪參數(shù)
中心距
分度圓
齒輪寬度
7低速級(jí)齒輪設(shè)計(jì)
7.1選定齒輪類型、精度等級(jí)、材料及齒數(shù)
7.1.1齒輪類型的選擇
考慮到動(dòng)力的傳遞沒有方向的變化以及加工成本,查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定齒輪類型選擇為直齒。
7.1.2齒輪精度選擇
由于棒棒糖自動(dòng)包裝機(jī)屬于一般工作機(jī),所以理糖盤轉(zhuǎn)速比較低,因此選用7級(jí)精度。
7.1.3齒輪材料的選擇
小齒輪材料選為40Cr,調(diào)質(zhì)處理,處理后硬度為280HBS。大齒輪材料選為45鋼,調(diào)質(zhì)處理,處理后硬度為240HBS,且兩者硬度差40HBS。
7.1.4齒輪齒數(shù)選擇
小齒輪齒數(shù) ;
大齒輪齒數(shù)
7.2計(jì)算
7.2.1按齒面接觸強(qiáng)度計(jì)算
公式(6)
查《機(jī)械設(shè)計(jì)》確定公式(6)中各值
載荷系數(shù) ;
小齒輪傳遞的轉(zhuǎn)矩 ;
齒寬系數(shù) ;
材料的彈性影響系數(shù) ;
按齒面硬度確定小齒輪的接觸疲勞強(qiáng)度極限
;
按齒面硬度確定大齒輪的接觸疲勞強(qiáng)度極限
;
通過盈利循環(huán)次數(shù)確定接觸疲勞壽命系數(shù)
;
;
確定解除疲勞壽命系數(shù)
確定疲勞許用應(yīng)力
失效概率為1%,安全系數(shù)S=1
則,
將所確定的各值代入公式(6)中,
計(jì)算圓周速度
計(jì)算齒寬
計(jì)算齒寬與齒高之比
所以,
查《機(jī)械設(shè)計(jì)》確定載荷系數(shù)K
所以,
按實(shí)際的載荷系數(shù)校正分度圓直徑
計(jì)算模數(shù)
7.2.2按齒根彎曲強(qiáng)度計(jì)算
公式(7)
查《機(jī)械設(shè)計(jì)》確定式公式(7)各值
確定小齒輪的彎曲疲勞強(qiáng)度極限
確定大齒輪的彎曲疲勞強(qiáng)度極限
確定齒輪的彎曲疲勞壽命系數(shù)
確定彎曲疲勞許用應(yīng)力,取疲勞安全系數(shù)S=1.4
確定載荷系數(shù)K
確定齒形系數(shù)
確定應(yīng)力校正系數(shù)
確定兩齒輪的,并比較大小
比較后,確定大齒輪的數(shù)值大。
將各值代入公式(7)中
將模數(shù)元整,取m=2.5
確定最終齒數(shù) 取
所以,最終確定高速級(jí)齒輪參數(shù)
分度圓
中心距
齒輪寬度
8蝸輪蝸桿設(shè)計(jì)
8.1設(shè)計(jì)條件
根據(jù)要求確定輸入功率
蝸桿轉(zhuǎn)速
傳動(dòng)比
工作條件:無(wú)沖擊、無(wú)塵
使用壽命
8.2確定蝸桿傳動(dòng)的傳動(dòng)類型以及選擇材料
8.2.1傳動(dòng)類型
查《機(jī)械設(shè)計(jì)》根據(jù)GB/T10085-1988的推薦,采用ZI(漸開線蝸桿)。
8.2.2選擇材料
考慮到蝸桿傳動(dòng)的功率不大,速度較小,所以蝸桿采用40Cr;因希望效率高些,耐磨性好些,所以蝸桿螺旋齒面要求調(diào)質(zhì)處理,處理后硬度為45~55HRC。蝸輪采用鑄錫磷青銅(ZCuSn10P1),采用金屬模工藝鑄造。
8.3設(shè)計(jì)計(jì)算
根據(jù)閉式蝸桿傳動(dòng)的設(shè)計(jì)準(zhǔn)則,先按齒面接觸疲勞強(qiáng)度進(jìn)行設(shè)計(jì),再校核齒根彎曲疲勞強(qiáng)度。
8.3.1按齒面接觸疲勞強(qiáng)度進(jìn)行設(shè)計(jì)
確定作用在蝸輪上的轉(zhuǎn)矩
查《機(jī)械設(shè)計(jì)》確定下列各值
載荷分布不均勻系數(shù)
使用系數(shù)
動(dòng)載系數(shù)
載荷系數(shù)
彈性系數(shù)
接觸系數(shù)
基本接觸應(yīng)力
蝸輪應(yīng)力循環(huán)次數(shù)
計(jì)算壽命系數(shù)
計(jì)算許用接觸應(yīng)力
計(jì)算中心距
公式(8)
將各值代入公式(8)中
考慮到方便加工以及后續(xù)的軸系分布設(shè)計(jì),取,由于,可確定模數(shù),蝸桿分度圓直徑,可確定,因此,上述計(jì)算結(jié)果可用。
8.3.2蝸桿的主要參數(shù)與幾何尺寸
軸向齒距
齒根圓直徑
直徑系數(shù)
分度圓導(dǎo)程角
齒頂圓直徑
蝸桿軸向齒厚
蝸桿頭數(shù)
蝸桿寬度
8.3.3蝸輪的主要參數(shù)與幾何尺寸
蝸輪齒數(shù)
變位系數(shù)
蝸輪分度圓直徑
蝸輪喉圓直徑
蝸輪齒根圓直徑
蝸輪咽喉母圓半徑
8.3.4按齒根彎曲疲勞強(qiáng)度校核
公式(9)
根據(jù)公式(9)進(jìn)行校核
確定當(dāng)量齒數(shù)
因
所以
確定螺旋角系數(shù)
確定ZCuSn10P1的基本許用彎曲應(yīng)力
確定壽命系數(shù)
計(jì)算齒根彎曲疲勞強(qiáng)度
因?yàn)?,所以上述設(shè)計(jì)參數(shù)滿足條件。
9軸上其他零件設(shè)計(jì)
9.1軸最小直徑的計(jì)算及危險(xiǎn)軸的校核
9.1.1 輸入軸
材料40Cr(調(diào)質(zhì)處理),硬度為280HBS,取 A0=107
公式(10)
將各數(shù)值代入公式(10)中
=9.864 mm 取25mm
9.1.2 中間軸
材料40Cr(調(diào)質(zhì)處理),硬度280HBS,取 A0=110
公式(11)
將各值代入公式(11)中
=15.117mm 取30mm
9.1.3蝸桿軸
材料40Cr(調(diào)質(zhì)處理),硬度250HBS,取
公式(12)
將各值代入公式(12)中
=24.105mm 取35mm
9.1.4蝸輪軸
材料40Cr(調(diào)制處理),硬度280HBS,取
公式(13)
將各值代入公式(13)中
取60mm
9.1.5危險(xiǎn)軸的校核
根據(jù)數(shù)據(jù)判斷,輸入軸軸為危險(xiǎn)軸,所以需要對(duì)其進(jìn)行校核。
圖1
如圖1所示小齒輪受力
=440.176 N 公式(14)
=160.211 N 公式(15)
受力分析
由軸的結(jié)構(gòu)圖得 L1=396mm L2=60mm
水平面
由
公式(16)
公式(17)
得 FNH1=21.080N
FNH2=139.131N
彎矩 M==8347.68 N·mm
鉛垂面
由
公式(18)
公式(19)
得 FNV1=57.918N
FNV2=382.258 N
彎矩 M==22935.528 N·mm
總彎矩 M==32435.735 N·mm
扭矩 T=7438 N·mm
按彎扭合成應(yīng)力校核軸的強(qiáng)度,計(jì)算取α=0.6
公式(20)
將各值代入公式(20)中
=21MPa
之前已選軸材料為40Cr,調(diào)質(zhì)處理,
70 MPa,
因?yàn)? <,
所以輸入軸是安全的。
9.2軸承選擇及校核
9.2.1輸入軸軸承的選擇及校核
由于輸入軸軸承段直徑為25mm,所以根據(jù)條件查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定輸入軸采用深溝球軸承,軸承代號(hào)為6005。
校核過程如下:
輸入軸軸承為6005。
查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》得基本額定動(dòng)載荷:
C=15.2kN
軸承受到的徑向載荷:
F=F=377.1N
F=F=981.1N
派生軸向力為:取e=0.4
Fd1=eFr1=150.8 N
Fd2=eFr2=392.4 N
兩軸承正裝,由于齒輪為直齒,無(wú)軸向力,所以Fae=0。
因?yàn)镕ae+Fd2>Fd1,所以左端軸承1被壓緊,右端軸承2放松。
所以軸向力 Fa1=Fae+Fd2=392.4 N
Fa2=Fd2=392.4 N
6005軸承判斷系數(shù) e=0.4。
>e
0.4
確定動(dòng)載荷系數(shù) X1=0.44, Y1=1.40
X2=1,Y2=0
取fp=1.1當(dāng)量動(dòng)載荷 P1=fp(X1Fr1+Y1Fa1)=786.8N
P2=fp(X2Fr2+Y2Fa2)=1079.2 N
因?yàn)镻1
12000h
所以壽命滿足使用要求。
9.2.2中間軸軸承的選擇及校核
由于中間軸軸承段直徑為30mm,根據(jù)條件查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定中間軸采用深溝球軸承,軸承代號(hào)為6006。
校核過程如下:
中間軸軸承為6006。
查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》得基本額定動(dòng)載荷
C=15.2kN
軸承受到的徑向載荷 F=F=377.1N
F=F=981.1N
派生軸向力為:取e=0.4
Fd1=eFr1=150.8 N
Fd2=eFr2=392.4 N
兩軸承正裝,由于齒輪為直齒,無(wú)軸向力,所以Fae=0。
因?yàn)镕ae+Fd2>Fd1,所以左端軸承1被壓緊,右端軸承2放松。
所以軸向力
Fa1=Fae+Fd2=392.4 N
Fa2=Fd2=392.4 N
6006軸承判斷系數(shù) e=0.4。
>e
0.4
確定動(dòng)載荷系數(shù) X1=0.44, Y1=1.40
X2=1,Y2=0
取fp=1.1當(dāng)量動(dòng)載荷
P1=fp(X1Fr1+Y1Fa1)=786.8N
P2=fp(X2Fr2+Y2Fa2)=1079.2 N
因?yàn)镻112000h
所以壽命滿足使用要求。
9.2.3蝸桿軸
由于蝸桿軸軸承段直徑為35mm,根據(jù)條件查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定蝸桿軸采用角接觸軸承,軸承代號(hào)為7007C。
校核過程如下:
蝸桿軸軸承為7007C。
查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》得基本額定動(dòng)載荷
C=19.5 kN
軸承受到的徑向載荷
F=F=3042.2N
F=F=2354.5N
派生軸向力為:取e=0.4
Fd1=eFr1=1216.9 N
Fd2=eFr2=941.8 N
兩軸承正裝,由于齒輪為直齒,無(wú)軸向力,所以Fae=0。
因?yàn)镕ae+Fd2P2,所以以軸承1作為壽命計(jì)算軸承。
球軸承ε=3
將各值代入公式(21)中
=16765 h >12000h
所以壽命滿足使用要求。
9.2.4蝸輪軸
由于渦輪軸上端軸承段基本沒有軸向載荷,所以根據(jù)條件查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定蝸輪軸上部才用深溝球軸承,軸承代號(hào)為6010;由于蝸輪軸下端同時(shí)承受軸向載荷和徑向載荷,所以根據(jù)條件查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定采用角接觸軸承,軸承代號(hào)為7012C。
校核過程如下:
由于蝸輪軸兩端采用不同軸承,但是底部7012C軸承承受絕大部分載荷,所以只對(duì)7012C軸承使用壽命進(jìn)行校核。
查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》得基本額定動(dòng)載荷
C=19.5 kN
軸承受到的徑向載荷 F=F=3042.2N
派生軸向力為
取e=0.4 Fd1=eFr1=1216.9 N
取Fae=1.5,且Fae+Fd212000h
所以壽命滿足使用要求。
9.3鍵的選擇及校核
9.3.1鍵的選擇
輸入軸 輸入聯(lián)軸器連接鍵:8×7×38
中間軸 大齒輪連接鍵:10×8×28
蝸桿軸 大齒輪連接鍵:12×8×39
蝸輪軸 輸出聯(lián)軸器連接鍵:14×9×40
蝸輪連接鍵:18×11×56
上述各鍵材料均為Q275A。
9.3.2輸入軸上鍵連接強(qiáng)度校核
輸入軸上只有一個(gè)鍵連接,聯(lián)軸器鏈接鍵:8×7×38。圓頭普通平鍵,材料Q275A,許用壓應(yīng)力=120MPa。
強(qiáng)度計(jì)算公式
公式(22)
公式中數(shù)據(jù) = 7.483N·m
k=3.5mm
l= 38mm
d=24 mm
所以 =4.688 MPa
因?yàn)?<所以滿足強(qiáng)度要求。
9.3.3中間軸鍵連接強(qiáng)度校核
中間軸上只有一個(gè)鍵連接,聯(lián)軸器鏈接鍵:10×8×28。圓頭普通平鍵,材料Q275A,許用壓應(yīng)力=120MPa。
數(shù)據(jù) =32.96N·m
k=4mm
l= 28mm
d=34 mm
將上述數(shù)據(jù)代入公式(22)中
得 =17.311 MPa
因?yàn)?<所以滿足強(qiáng)度要求。
9.3.4蝸桿軸鍵連接強(qiáng)度校核
蝸桿軸上只有一個(gè)鍵連接,聯(lián)軸器鏈接鍵:12×8×39。圓頭普通平鍵,材料Q275A,許用壓應(yīng)力=120MPa。
數(shù)據(jù) =103.34N·m
k=4mm
l= 39mm
d=42 mm
將上述數(shù)據(jù)代入公式(22)中
得 =31.545MPa
因?yàn)?<所以滿足強(qiáng)度要求。
9.3.5蝸輪軸鍵連接強(qiáng)度校核
蝸輪軸上有兩個(gè)鍵,蝸輪鏈接鍵和輸出聯(lián)軸器鏈接鍵。都為圓頭普通平鍵,材料Q275A,許用壓應(yīng)
力=120MPa。
蝸輪鏈接鍵尺寸 18×11×40
聯(lián)軸器鏈接鍵尺寸 14×9×56
蝸輪連接鍵 = 968.325N·m
k=5.5 mm
l= 56 mm
d=60 mm
聯(lián)軸器鏈接鍵 = 968.325N·m
k=4.5mm
l= 40mm
d=46 mm
將上述數(shù)據(jù)代入公式(22)中
得
蝸輪鍵連接 =104.797 MPa
聯(lián)軸器鏈接鍵 =110.894 MPa
因?yàn)閮蓚€(gè)均為 <,所以都滿足強(qiáng)度要求。
9.4潤(rùn)滑方式選擇
9.4.1 軸承潤(rùn)滑方式選擇
根據(jù)條件可確定潤(rùn)滑方式為脂潤(rùn)滑。查 《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定潤(rùn)滑劑為通用鋰基潤(rùn)滑脂ZL-1。
9.4.2 齒輪潤(rùn)滑方式選擇
根據(jù)條件查《簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè)》確定齒輪采用浸油潤(rùn)滑。圓柱齒輪浸入油的深度最低約一個(gè)齒高,但不少于10mm,最高不超過三分之一分度圓半徑,大齒輪的齒頂?shù)接统氐酌娴木嚯x≥10mm。
10箱體主要結(jié)構(gòu)尺寸設(shè)計(jì)
箱體是減速器的重要組成部件。它是傳動(dòng)零件的基座,應(yīng)具有足夠的強(qiáng)度和剛度。在保證強(qiáng)度和剛度的基礎(chǔ)上,因考慮到該傳動(dòng)裝置用于食品包裝,可以最大限度上較小整體質(zhì)量,所以確定箱座壁厚5mm、箱蓋壁厚5mm、箱蓋凸緣厚度5mm、箱座凸緣厚度5mm。根據(jù)內(nèi)部軸系分布,確定減速器三圍尺寸為:長(zhǎng)825mm、寬492mm、高221mm。
結(jié) 論
棒棒糖自動(dòng)包裝機(jī)理糖機(jī)構(gòu)傳動(dòng)裝置的設(shè)計(jì)已經(jīng)完成,該傳動(dòng)裝置為一個(gè)二級(jí)圓柱齒輪減速器與蝸輪蝸桿減速器組成的復(fù)合式減速器,其輸出功率為0.436kw,能夠滿足設(shè)計(jì)中的0.3kw的設(shè)計(jì)要求,其輸出轉(zhuǎn)速為4.3r/min,完全符合設(shè)計(jì)要求。該傳動(dòng)裝置的最大特點(diǎn)在于將二級(jí)圓柱齒輪減速器與蝸輪蝸桿減速器復(fù)合于一個(gè)箱體內(nèi),且最終將電動(dòng)機(jī)輸出的垂直轉(zhuǎn)矩轉(zhuǎn)換成水平轉(zhuǎn)矩,并將轉(zhuǎn)矩傳遞給理糖盤,完成其旋轉(zhuǎn)。由于設(shè)計(jì)要求理糖盤的轉(zhuǎn)速為4.3r/min,切電動(dòng)機(jī)轉(zhuǎn)速偏高,這對(duì)傳動(dòng)比得分配提出了比較大得挑戰(zhàn)。該傳動(dòng)裝置的這一特點(diǎn),恰好將這一挑戰(zhàn)迎刃而解,蝸輪蝸桿減速器的應(yīng)用,最大程度上增加了傳動(dòng)比,而將這兩者減速器復(fù)合于一體,也在最大程度上節(jié)省了空間和設(shè)計(jì)難度,同時(shí)也在一定程度上節(jié)約了加工成本,減少了加工難度,這一點(diǎn)也是與以前類似減速器設(shè)計(jì)上的創(chuàng)新。該減速器的另一個(gè)優(yōu)點(diǎn)是承載能力強(qiáng),抗沖擊能力大,工作穩(wěn)定,但是這一優(yōu)點(diǎn)也帶來(lái)了它的一個(gè)缺點(diǎn),那就是整體質(zhì)量偏大,這也在一定程度上提高了安裝的難度。這一問題會(huì)在日后加以解決。
參考文獻(xiàn)
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[2] 孔凌嘉 毛謙德主編 簡(jiǎn)明機(jī)械設(shè)計(jì)手冊(cè) 北京:北京理工大學(xué)出版社,2008
[3] 濮良貴 紀(jì)明剛主編 機(jī)械設(shè)計(jì) 北京:高等教育出版社,2006
[4] 肖旭霖主編 食品加工機(jī)械與設(shè)備 北京:中國(guó)輕工業(yè)出版社,2000
[5] 鄧星鐘主編 機(jī)電傳動(dòng)控制(第四版) 武漢:華中科技大學(xué)出版社,2011
[6] 劉鴻文主編 材料力學(xué)Ⅰ(第四版) 北京:高等教育出版社,2003
[7] 高愿軍 熊衛(wèi)東主編 食品包裝 北京:化學(xué)工業(yè)出版社,2005
[8] 郭克希 王建國(guó)主編 機(jī)械制圖 北京:機(jī)械工業(yè)出版社,2008
[9] 黃穎為主編 包裝機(jī)械結(jié)構(gòu)與設(shè)計(jì) 北京:化學(xué)工業(yè)出版社,2007
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北京:機(jī)械工業(yè)出版社,1999
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致 謝
在本次畢業(yè)設(shè)計(jì)的過程中,我深深地體會(huì)到“萬(wàn)事開頭難”與“堅(jiān)持不懈”的真諦。每當(dāng)遇到困難,沒有動(dòng)力的時(shí)候,我不止一次地感覺到,只要能夠開個(gè)頭,只要能夠堅(jiān)持著一步一步向前走去,哪怕再困難的問題都會(huì)迎刃而解。在本次設(shè)計(jì)中,我的指導(dǎo)教師,牛博英老師給予了我極大的幫助,不僅幫我解決了問題,也開拓了我的設(shè)計(jì)思路,再次對(duì)您致以深深的謝意。
29
中國(guó)地質(zhì)大學(xué)長(zhǎng)城學(xué)院
本科畢業(yè)設(shè)計(jì)外文資料翻譯
系 別: 工程技術(shù)系
專 業(yè):機(jī)械設(shè)計(jì)制造及其自動(dòng)化
姓 名: 李巍
學(xué) 號(hào): 05208316
2012 年 1 月 18 日
包裝機(jī)的研究現(xiàn)狀及發(fā)展趨勢(shì)
簡(jiǎn)單來(lái)說(shuō),包裝機(jī)就是把產(chǎn)品包裝起來(lái)機(jī)器,起著保護(hù),美觀的作用。 包裝機(jī)主要分兩個(gè)方面,一是流水線式整體生產(chǎn)包裝,二是產(chǎn)品外圍包裝設(shè)備。
包裝機(jī)簡(jiǎn)介
1.流水線式整體生產(chǎn)包裝,應(yīng)用于食品,醫(yī)藥,化工等行業(yè)的(袋裝,瓶裝)產(chǎn)品的灌裝 主要包括:液體(膏體)灌裝機(jī),枕式包裝機(jī),粉劑顆粒包裝機(jī),給袋式自動(dòng)包裝機(jī)等?! ?
2.產(chǎn)品外圍包裝設(shè)備, 用于產(chǎn)品生產(chǎn)出來(lái)后的,噴(打)生產(chǎn)日期,封口,縮膜等。主要包括:灌裝機(jī), 封口機(jī),噴碼機(jī),打包機(jī),真空機(jī),收縮機(jī),真空包裝機(jī)等。
自動(dòng)包裝機(jī)的優(yōu)勢(shì)
要想在規(guī)定的時(shí)間內(nèi),為自己創(chuàng)造出最大的利益,就要確保自己的食品包裝生產(chǎn)線運(yùn)行良好,在生產(chǎn)過程中不會(huì)出現(xiàn)錯(cuò)誤,這樣在盡量避免錯(cuò)誤出現(xiàn)和故障的影響,才會(huì)為企業(yè)獲得最大的利益。自動(dòng)化水平在制造工業(yè)中不斷提高,應(yīng)用范圍正在拓展。包裝機(jī)械行業(yè)中自動(dòng)化操作正在改變著包裝過程的動(dòng)作方式和包裝容器及材料的加工方法。實(shí)現(xiàn)自動(dòng)控制的包裝系統(tǒng)能夠極大地提高生產(chǎn)效率和產(chǎn)品質(zhì)量,顯著消除包裝工序及印刷貼標(biāo)等造成的誤差,有效減輕職工的勞動(dòng)強(qiáng)度并降低能源和資源的消耗。具有革命意義的自動(dòng)化改變著包裝機(jī)械行業(yè)的制造方法及其產(chǎn)品的傳輸方式。設(shè)計(jì)、安裝的自動(dòng)控制包裝系統(tǒng),無(wú)論從提高包裝機(jī)械行業(yè)的產(chǎn)品質(zhì)量和生產(chǎn)效率方面,還是從消除加工誤差和減輕勞動(dòng)強(qiáng)度方面,都表現(xiàn)出十分明顯的作用。尤其是對(duì)食品、飲料、藥品、電子等行業(yè)而言,都是至關(guān)重要的。自動(dòng)裝置和系統(tǒng)工程方面的技術(shù)正在進(jìn)一步深化,并得到更廣泛的應(yīng)用。
發(fā)展現(xiàn)狀
仍就食品的銷售包裝而言,現(xiàn)今最常用、最基本的包裝工藝方法有兩大類,即充填與裹包。充填方法幾乎適用于一切物料和各類包裝容器。具體講,對(duì)流動(dòng)性較好的液體、粉體、散粒體,主要依靠自身重力,必要是輔以一定的機(jī)械作用便可完成包裝過程。而對(duì)黏性較強(qiáng)的半流體或體形較大的單件、組合件,則要求采用相應(yīng)的擠壓、推入、拾放等強(qiáng)制性措施。至于裹包方法卻與此有所差異,它主要適用于外形規(guī)整、有足夠硬性挺性、且要求包裝得較緊實(shí)的單件或組合件,多用柔性的塑料及其復(fù)合材料(有的附加輕質(zhì)托盤、襯板),借助機(jī)械作用進(jìn)行裹包。 近十余年來(lái),國(guó)際包裝界十分重視提高包裝機(jī)械及整個(gè)包裝系統(tǒng)的通用能力和多功能集成能力,為市場(chǎng)開拓日新月異的多樣化商品提供及時(shí)靈活應(yīng)變的生產(chǎn)手段。同時(shí)基于合理簡(jiǎn)化包裝和優(yōu)勢(shì)包裝工藝方法的實(shí)際需要,不斷探索,明顯地加快了自身技術(shù)革新的步伐。尤其是與現(xiàn)代自動(dòng)機(jī)床同步發(fā)展相呼應(yīng),逐步明確。要想建立多樣化、通用化、多功能集成化的包裝機(jī)械新體系,首先必須著重解決組合化和機(jī)電一體化的大問題,無(wú)疑這是今后的重要發(fā)展方向。 機(jī)械包裝代替手工包裝,大大提高了包裝的效率,但是包裝泛濫也已經(jīng)成為一種惡習(xí)。未來(lái)不僅僅包裝,包裝機(jī)械也將朝向環(huán)保發(fā)展。綠色環(huán)保就是未來(lái)的主旋律。
發(fā)展前景預(yù)測(cè)
目前,食品包裝企業(yè)大部分規(guī)模偏小,“小而全”是其主要特征之一,同時(shí)存在著不顧行業(yè)發(fā)展要求,重復(fù)生產(chǎn)那些成本低、工藝水平比較落后、易于制造的機(jī)械產(chǎn)品,行業(yè)內(nèi)目前大約有1/4的企業(yè)存在低水平重復(fù)生產(chǎn)現(xiàn)象。這是對(duì)資源的極大浪費(fèi),造成包裝機(jī)械市場(chǎng)的混亂,阻礙行業(yè)的發(fā)展。 多數(shù)企業(yè)年產(chǎn)值在幾百萬(wàn)元到1000萬(wàn)元之間,低于100萬(wàn)元的企業(yè)為數(shù)還不少。每年有近15%的企業(yè)轉(zhuǎn)產(chǎn)或倒閉,但又有15%的企業(yè)加入這個(gè)行業(yè),極其不穩(wěn)定,現(xiàn)象阻礙了行業(yè)發(fā)展的穩(wěn)定性。 隨著科學(xué)技術(shù)的不斷發(fā)展,各種食品、水產(chǎn)加工品的出現(xiàn),對(duì)食品包裝技術(shù)和設(shè)備都提出了新的要求。目前,食品包裝機(jī)械競(jìng)爭(zhēng)日趨激烈,未來(lái)的食品包裝機(jī)械將配合產(chǎn)業(yè)自動(dòng)化,促進(jìn)包裝設(shè)備總體水平提高,發(fā)展多功能、高效率、低消耗的食品包裝設(shè)備。 實(shí)現(xiàn)食品包裝機(jī)械機(jī)電一體化 傳統(tǒng)的包裝機(jī)械多采用機(jī)械式控制,如凸輪分配軸式,后來(lái)又出現(xiàn)了光電控制、氣動(dòng)控制等控制形式。但是,隨著食品加工工藝的日益提高,對(duì)包裝參數(shù)的要求不斷增多,原有的控制系統(tǒng)已難以滿足發(fā)展的需要,應(yīng)采用新的技術(shù)改變食品包裝機(jī)械的面貌。當(dāng)今的食品包裝機(jī)械是集機(jī)、電、氣、光、磁于一體的機(jī)械電子設(shè)備,在設(shè)計(jì)時(shí),應(yīng)著力于提高包裝機(jī)械的自動(dòng)化程度,將包裝機(jī)械的研發(fā)與計(jì)算機(jī)結(jié)合,實(shí)現(xiàn)機(jī)電一體化控制。 機(jī)電一體化的實(shí)質(zhì)就是從系統(tǒng)觀點(diǎn)出發(fā),運(yùn)用過程控制原理,將機(jī)械、電子與信息、檢測(cè)等有關(guān)技術(shù)進(jìn)行有機(jī)組合,實(shí)現(xiàn)整體最佳化。 總體講,它是將微機(jī)技術(shù)引入到包裝機(jī)械,應(yīng)用機(jī)電一體化技術(shù),開發(fā)智能化包裝技術(shù),按產(chǎn)品自動(dòng)包裝工藝要求組合成全自動(dòng)包裝系統(tǒng)進(jìn)行生產(chǎn),生產(chǎn)過程的檢測(cè)與控制、故障的診斷與排除將實(shí)現(xiàn)全面自動(dòng)化,實(shí)現(xiàn)高速、優(yōu)質(zhì)、低耗和安全生產(chǎn)。可用于水產(chǎn)加工食品的精確計(jì)量、高速充填和包裝過程自動(dòng)控制等,將使包裝機(jī)械結(jié)構(gòu)大為簡(jiǎn)化,提高包裝產(chǎn)品質(zhì)量。如最常見的塑料袋封口機(jī),其封口質(zhì)量與包裝材料、熱封溫度和運(yùn)行速度等有關(guān)。如材料(材質(zhì)、厚度)發(fā)生變化,那溫度和速度也要隨之改變,但變化多少卻難把握。如采用微機(jī)控制,將各種包裝材料的封口溫度和速度的最佳參數(shù)匹配輸入微機(jī)存儲(chǔ)器,再配上必要的傳感器,組成自動(dòng)跟蹤系統(tǒng),這樣,不管哪個(gè)工藝參數(shù)改變,都能保證最佳的封口質(zhì)量。采用新技術(shù),建立自動(dòng)化、多樣化、多功能集成化的包裝機(jī)械新體系食品包裝機(jī)械其技術(shù)發(fā)展趨勢(shì)主要體現(xiàn)在高生產(chǎn)率、自動(dòng)化、單機(jī)多功能、多功能組成生產(chǎn)線、采用新技術(shù)上。如:多工位制袋真空包裝機(jī),其制袋、稱重、充填、抽真空、封口等多種功能可在一臺(tái)單機(jī)上完成;功能不同、效率相匹配的幾種機(jī)器可組合成為功能較齊全的生產(chǎn)線,如法國(guó)CRACECRYOYA和ISTM公司研制的鮮魚真空包裝生產(chǎn)線。采用相關(guān)新技術(shù),在包裝方法上大量采用充氣包裝取代真空包裝,將充氣成分、包裝材料與充氣包裝機(jī)三方面的研究緊密結(jié)合起來(lái);在控制技術(shù)上,更多地應(yīng)用計(jì)算機(jī)技術(shù)和微電子技術(shù); 在封口方面應(yīng)用熱管和冷封口技術(shù)。另外,隨著包裝從單一技術(shù)轉(zhuǎn)向與加工相結(jié)合研究取得進(jìn)展,應(yīng)將包裝技術(shù)領(lǐng)域延伸到加工領(lǐng)域,開發(fā)包裝、加工一體化的食品加工包裝設(shè)備。 適應(yīng)國(guó)際市場(chǎng)要求,開發(fā)設(shè)計(jì)綠色包裝機(jī)械,國(guó)際包裝機(jī)械行業(yè)競(jìng)爭(zhēng)日益激烈,綠色貿(mào)易壁壘對(duì)食品包裝機(jī)械行業(yè)提出更高的要求,所以,必須改變傳統(tǒng)的包裝機(jī)械設(shè)計(jì)及開發(fā)模式,在設(shè)計(jì)階段考慮到使包裝機(jī)械在其全生命周期中(設(shè)計(jì)、加工制造、裝配、使用、維修直至廢棄后處理處置過程)對(duì)環(huán)境無(wú)影響或影響最小化、資源低耗、易于回收等“綠色特征”,以提升包裝機(jī)械的核心競(jìng)爭(zhēng)力。印刷用油墨在內(nèi)的關(guān)鍵原材料及其供應(yīng)方目錄應(yīng)進(jìn)行備案,以便對(duì)批量生產(chǎn)的食品包裝/容器類產(chǎn)品進(jìn)行監(jiān)督控制,使消費(fèi)者能夠買到保證安全、放心的產(chǎn)品。因?yàn)榍f(wàn)萬(wàn)消費(fèi)者每天要食用的食品、藥品,必須使用不僅能保護(hù)內(nèi)容物不受病毒、病菌污染的軟塑包裝材料,還要求軟塑包裝材料本身符合安全衛(wèi)生的規(guī)定,避免包裝材料污染所包裝的食品、藥品,故保證食品包裝的衛(wèi)生安全性乃是當(dāng)務(wù)之急。
自動(dòng)套袋包裝機(jī)介紹
全自動(dòng)套袋包裝機(jī)是熱收縮包裝機(jī)設(shè)備中最先進(jìn)、自動(dòng)化程度最高的一款產(chǎn)品。該產(chǎn)品適用于薄膜封切及熱收縮包裝。全自動(dòng)熱收縮包裝機(jī)可以自動(dòng)送膜、然后自動(dòng)制袋、表面撫平,封口切膜打包、熱收縮包裝一次完成。同時(shí)對(duì)廢料可以進(jìn)行回收。全自動(dòng)熱收縮機(jī)的切刀為恒溫式特級(jí)鋁合金材料,為POF膜片封切特制。該切刀的特點(diǎn)是封口線比較細(xì),抗粘。另外,針對(duì)包裝大小不一的情況,全自動(dòng)熱收縮包裝機(jī)可以在一定范圍內(nèi)調(diào)整,不用更換磨具。同時(shí)可以手動(dòng)調(diào)整的部位還有熱收縮爐溫度和熱收縮包裝的速度。該產(chǎn)品廣泛用在制藥、食品、文具、化妝品、電子產(chǎn)品、玩具等領(lǐng)域。 首先對(duì)套袋包裝機(jī)設(shè)定好加熱時(shí)間 按下手動(dòng)或則自動(dòng)按鈕后,齒條汽缸電磁閥得電輸出推動(dòng)齒輪,齒輪帶動(dòng)鏈條,此時(shí)齒條汽缸后位接近開關(guān)斷開。當(dāng)齒條汽缸運(yùn)行到上止點(diǎn)時(shí),齒條汽缸的前位接近開關(guān)導(dǎo)通,烘箱汽缸電磁閥得電輸出。烘箱汽缸運(yùn)行到上止點(diǎn)時(shí),定時(shí)器啟動(dòng)開始延時(shí),齒條汽缸電磁閥斷電。定時(shí)結(jié)束,烘箱汽缸電磁閥斷電。依據(jù)工作方式標(biāo)志位,決定是否繼續(xù)下一個(gè) 工作流程。
21世紀(jì)包裝機(jī)發(fā)展趨勢(shì)
真空包裝技術(shù)起源于20世紀(jì)40年代。自1950年聚酯、聚乙烯塑料薄膜成功地應(yīng)用于商品包裝以來(lái),真空包裝機(jī)便得到迅速的發(fā)展,其技術(shù)發(fā)展趨勢(shì)主要體現(xiàn)在高生產(chǎn)率、自動(dòng)化、單機(jī)多功能、組成生產(chǎn)線、采用相關(guān)新技術(shù)這5個(gè)方面。
1、高生產(chǎn)率。真空包裝機(jī)的生產(chǎn)率已從每分鐘數(shù)件發(fā)展到數(shù)10件,熱成型—充填—封口機(jī)的生產(chǎn)率可達(dá)500件/分以上。
2、自動(dòng)化。如星火500雙室真空包裝機(jī)具有抽真空、封口、印字、冷卻一次性完成之功能,主要用于茶葉、花生、蝦仁、玉米等食品的包裝。
3、單機(jī)多功能。在單機(jī)上實(shí)現(xiàn)多功能,可方便地?cái)U(kuò)大使用范圍。實(shí)現(xiàn)單機(jī)多功能必須采用模塊化設(shè)計(jì),通過功能模塊的變換和組合,成為適用于不同包裝材料、包裝物品、包裝要求的不同類型的真空包裝機(jī)。代表性的產(chǎn)品有德國(guó)BOSCH公司所屬的HESSER廠生產(chǎn)的心軸輪多工位制袋真空包裝機(jī),其制袋、稱重、充填、抽真空、封口等多種功能可在一臺(tái)單機(jī)上完成。
4、組成生產(chǎn)線。當(dāng)需要的功能越來(lái)越多時(shí),將所有的功能集中在一個(gè)單機(jī)上會(huì)使結(jié)構(gòu)非常復(fù)雜,操作維修也不方便,這時(shí)可把功能不同、效率相匹配的幾種機(jī)器組合成功能較齊全的生產(chǎn)線。
5、采用相關(guān)新技術(shù)。在包裝方法上大量采用充氣包裝取代真空包裝,將充氣成分、包裝材料與充氣包裝機(jī)三方面的研究緊密結(jié)合起來(lái);在控制技術(shù)上,更多地應(yīng)用計(jì)算機(jī)技術(shù)和微電子技術(shù);在封口方面應(yīng)用熱管和冷封口技術(shù),也可以將先進(jìn)的裝置直接安裝在真空包裝機(jī)上,如裝上計(jì)算機(jī)控制的粗粒物料高精度組合秤;在旋轉(zhuǎn)或真空包裝機(jī)上,應(yīng)用先進(jìn)高速的圓弧面凸輪分度機(jī)械等。
Research and development trend of the packaging machine
Simply put, the packaging machine is the product packaging up the machine, plays a protection role of the beautiful. The packaging machine in two main areas, the overall production pipeline packaging products periphery packaging equipment.
Packing Machine Profile
1.the pipelined overall production of packaging, used in food, medicine, chemical industry (bags, bottled) filling include: liquid (paste) filling machine, pillow packing machine, powder, granule packing machine, to bag automatic packaging machine.
2. Peripheral packaging equipment for the product produced, the spray date of manufacture, sealing, shrink film. Include: filling machine, sealing machine, inkjet printer, packing machine, vacuum machine, shrink machine, vacuum packing machines and other.
The advantages of automatic packaging machine
To within the stipulated time for themselves to create the maximum benefit, it is necessary to ensure their own food packaging production line is running well, without error in the production process, so in order to avoid errors and failure of will enterprises to obtain the maximum benefit. Level of automation in the manufacturing industry, continuous improvement, is expanding its range of applications. Automation in the packaging machinery industry is changing the action mode of the packaging process and packaging containers and materials processing methods. Packaging systems for automatic control can greatly improve production efficiency and product quality, significantly eliminate the packaging process and printed labeling error, effectively reducing the labor intensity of workers and reduce energy and resource consumption. The automation of revolutionary change the transmission of the manufacturing method of the packaging machinery industry and its products. Design, install the automatic control of packaging systems, in terms of improving product quality and production efficiency of the packaging machinery industry, or from the elimination of processing errors and reduce labor intensity, have demonstrated a very significant role. Especially for food, beverages, pharmaceuticals, electronics and other industries, are essential. Automatic devices and systems engineering aspects of the technology is further deepened, and a wider range of applications.
Development Status
Still on the sale of food packaging, the most common and basic packaging technology there are two categories, namely, filling and wrapping. The filling method is suitable for almost all materials and all kinds of containers. Specifically, good fluidity liquid, powder, granular, mainly depends on its gravity, if necessary, supplemented by some mechanical action can be completed in the packaging process. Semi liquid or body of viscous strong large one-piece assembly, the corresponding squeeze, push, pick and place and other coercive measures. The wrapping method shows just the difference, it mainly applies to the regular shape, there is enough hard very nature, and requires tight packing single or combination, the use of flexible plastics and composite materials (and some additional lightweight tray liners), wrapping the aid of mechanical action. The past decade, the international packaging industry attaches great importance to improve the general ability of packaging machinery and packaging systems and multi-function integration capabilities to provide timely and flexible response of the means of production for the market to develop the rapid diversification of commodities. Based on reasonable actual need to simplify the method of packaging and advantages of the packaging process, continuing to explore, significantly accelerated the pace of technological innovation. In particular, the simultaneous development of modern automatic machine echoes gradually clear. To build a diverse, universal, multi-function integrated packaging machinery system, we must first focus on solving the big problem of the combination and the mechanical and electrical integration, no doubt, this is an important development in the future direction. Mechanical packaging instead of manual packaging, greatly improving the efficiency of the packaging, packaging flooding has become a habit. Not only the future of packaging, but it is also packaging machinery will also be toward the development of the environmental protection. Green is the main theme of the future.
Future prospects of
At present, most of the food packaging business scale is small, "small" is one of its main characteristics, exist regardless of the industry development requirements, repeat the production of those low cost, and level of technology is relatively backward, easy to manufacture mechanical products industry At present there are about 1/4 of the corporate existence of low-level repetitive phenomenon. This is a tremendous waste of resources, resulting in the packaging machinery market confusions; hinder the development of the industry. The annual output value of the majority of enterprises in a few million dollars to 10 million dollars, the number of less than 100 million businesses there are still many. Annual conversion or closure of nearly 15% of the enterprises, but another 15% of companies have joined this industry, is extremely unstable, the phenomenon has hindered the development of the industry's stability. With the continuous development of science and technology, a variety of food, aquatic products, the emergence of new demands on food packaging technology and equipment. Currently, the increasingly fierce competition in the food packaging machinery, food packaging machinery in the future will be coordinated with the industrial automation, to promote the overall level of packaging equipment, and the development of versatile, high efficiency, low consumption of food packaging equipment. Packaging machinery food packaging machinery, mechanical and electrical integration of traditional use of mechanical control, such as the distribution cam shaft, and later a photoelectric control, pneumatic control and other forms of control. However, with increasing food processing, packaging parameters continue to increase, the original control system has been difficult to meet the needs of the development should adopt a new technology has changed the face of food packaging machinery. Today's food packaging machinery, machine, electricity, gas, light, magnetic, mechanical and electrical equipment, design, should focus on improving the degree of automation of packaging machinery, packaging machinery research and development combined with the computer, mechanical and electrical integration. Controlled. Mechanical and electrical integration, in essence, be starting from the system point of view, the use of process control theory, the technology of the machinery, electronics and information, testing organic combination, to achieve the overall best. Overall speaking, it is to bring computer technology to the packaging machinery, application of macaronis technology to develop intelligent packaging technology, packaging technology requirements by product into automatic packaging system for production, detection and control of the production process, fault diagnosis and preclude the realization of fully automated, high-speed, high-quality, low consumption and production safety. Can be used for accurate measurement of aquatic processed foods, high-speed filling and packaging process automatic control, will enable the packaging machinery structure greatly simplified, and improve the quality of packaging products. Such as the most common plastic bag sealing machine, sealing quality and packaging materials, sealing temperature and running speed, etc.. Change such as material (material, thickness), temperature and speed should change, but change the number of difficult to grasp. Such as the use of computer control, the best parameter matching a variety of packaging materials, sealing temperature and speed to enter the computer memory, adding the necessary sensors, to form an automatic tracking system, so, no matter what changes in process parameters, can guarantee the best sealing quality. Adopt new technologies, build automation, diversification, multi-function integrated a new system of food packaging machinery, packaging machinery, technology trends reflected in the production line of high productivity, automation, stand-alone multi-function, multi-functional composition, the use of new technologies. Such as: multi bag vacuum packaging machine, its bag making, weighing, filling, vacuum sealed, and a variety of functions in a single; different functions, to match the efficiency of several machines can be combined as a functional complete production lines, such as fresh fish developed by French CRACECRYOYA and ISTM vacuum packaging production line. Using new technology, packaging methods, extensive use of inflatable packaging to replace the vacuum packaging, the three aspects of the inflation component, packaging material and inflatable packaging machine to closely combine; in control technology, and application of computer technology and microelectronic technology; seal heat pipes and cold sealing technology. In addition, with the packaging from a single technology to the combination of research progress and processing, the field of packaging technology should be extended to the processing area, the development of packaging, processing integrated food processing and packaging equipment. Adapt to international market requirements, development and design of green packaging machinery, international packaging machinery industry is increasingly competitive, demanding higher green trade barriers for food packaging machinery industry, therefore, must change the traditional packaging machinery design and development model in the design phase to packaging machinery in its full life cycle (design, manufacturing, assembly, use, maintenance until after the waste treatment and disposal process) the environmental impact or minimize the impact of resources and low consumption, easy recovery "green features" to enhance the core competitiveness of the packaging machinery. Printing ink included is the key raw materials and supply-side directory should be carried out for the record, supervision and control to the mass production of food packaging / container products so that consumers can buy to ensure a safe and secure products. Because millions of consumers every day consumption of food, medicine, must be used not only to protect the contents from viruses, bacteria contamination of soft plastic packaging materials, also called soft plastic packaging material is in compliance with the provisions of the Safety and Health, to avoid packing material contamination of the packaged food, medicines, and therefore to ensure the health safety of food packaging is a priority.
Automatic bagging packaging machine
The automatic bagging packaging machine shrinks packaging machine equipment, the most advanced and highest degree of automation of a product. The products are suitable for the film of the sealing and shrink packaging. Automatic shrink packaging machine can be automatically sent to the membrane, and then the automatic bag, smooth surface, sealing cut membrane packing, shrink packing at once. Waste can be recycled. Automatic Shrink Machine cutter for the thermostatic premium aluminum alloy, the Chet system for POF diaphragm seal. The cutter is characterized by the sealing line is quite thin, anti-stick. In addition, for the packaging of different sizes, automatic shrink packaging machine can be adjusted within a certain range, do not replace the abrasive. At the same time the site can manually adjust the Shrink temperature and speed shrink packaging. The product is widely used in pharmaceutical, food, stationery, cosmetics, electronic products, toys and other fields. First bagged packaging machine set heating time manually or is automatically button is pressed, the output of the rack cylinder electric solenoid valve to promote gear, gear driven chain, the rack cylinder proximity switch disconnected. When the rack cylinder run to the only point, the first proximity switch turns on, the oven of the rack cylinder solenoid valve is energized output. Oven cylinder run to the point, the timer start delay, the rack cylinder solenoid valve power. Timing the end of the oven cylinder solenoid valve power. Flag, according to the work to decide whether to continue under a workflow.
Packaging machine development trend of the 21st century
Vacuum packaging technology originated in the 1940s. Since 1950 polyester, polyethylene plastic film used in the packaging of goods, vacuum packaging machine will be the rapid development of technology trends reflected in the high productivity, automation, and stand-alone multi-function, composition of the production line, the use of new technology These five aspects.
1. Highly productivity. The productivity of the vacuum packaging machine from a few pieces per minute development to the number 10, thermoforming - Fill - Seal Machine productivity up to 500 / min or more.
2. Automation. Such as the Spark 500 double chamber vacuum packaging machine with vacuum sealing, printing, cooling a one-time completion of the function is mainly used for tea, peanuts, shrimp, corn and other food packaging.
3. standing alone multi-function. Stand-alone function can easily expand the scope of use. Achieve stand-alone multi-function must be modular in design, transformation and combination of functional modules, for different packaging materials, packaging materials, packaging requirements of different types of vacuum packaging machine. Representative products HESSER production plants in Germany BOSCH Company belongs spindle round multi bag vacuum packaging machine, bag, weighing, filling, vacuum sealed, and a variety of functions to be completed in a single .
4. Be composed of the production line. All the features concentrated in a single machine when a growing number of the functionality required making a very complex structure, operation and maintenance is not easy, this time function can be different, and efficiency to match the combination of several machines successfully, more complete production line.
5. The use of new technology. Inflatable packaging to replace the vacuum packaging, the three aspects of the inflation component, packaging material and inflatable packaging machine to closely combine the extensive use of packaging methods; in control technology, application of computer technology and microelectronics technology; in sealing the application of heat pipes and cold sealing technology, advanced devices also can be installed directly on the vacuum packaging machine, such as installed on the computer-controlled precision combination of scale of the coarse-grained materials; rotation or vacuum packaging machine, the application of advanced high-speed circular surface cam machinery.