Jekeseni wononga L/D chiŵerengerondi utali wogwirira ntchito wogawanika ndi screw diameter, ndipo zomangira zambiri za jakisoni zimatha 18:1 mpaka 25:1. Izi ndi zomwe palibe pepala lakukuuzani: simungathe kusintha L/D pamakina omwe muli nawo kale. Kutalika kumakhazikitsidwa ndi mbiya. Zomwe mungasinthe ndizoscrew diameter, ndi mu mbiya yosasunthika yomwe kusankha kumodzi kumasuntha L / D, kuwombera mphamvu, ndi kuthamanga kwa jekeseni palimodzi, mosiyana. Chophimba chaching'ono chimapereka L/D yokwezeka, kuwomberako pang'ono, komanso kupanikizika kwambiri. Fananizani malonda ndi utomoni wanu ndi gawo lanu, ndipo mafunso ambiri a L/D amadziyankha okha.
Kodi L/D Ratio Imatanthauza Chiyani Pa Jakisoni Screw
L/D ndi kutalika kwa ntchito ya screw (L) yogawidwa ndi m'mimba mwake (D). Zowononga nthawi 22 kuposa momwe zilili ndi L/D za 22:1.
Chiŵerengerocho chimasiyana ndi kukula kwake. Sivuta 40 mm pa 22:1 ili ndi kutalika kwa 880 mm. 80 mm screw pa 22:1 ndi 1,760 mm kutalika. Chiŵerengero chomwecho, makina osiyana kwambiri.
Zomwe chiŵerengerocho chimafotokoza kwenikweni ndindi njira yanji yothamangira yomwe wononga iyenera kugwira ntchito yake. Kudyetsa, kusungunuka, ndi mitala zonse zimachitika motalika choncho. Kutalika kowonjezereka kumatanthauza mphamvu yosungunuka komanso kusakaniza. Kuchepa kwautali kumatanthauza kuchepera pa zonse ziwiri, komanso nthawi yochepa kuti zinthu zikhale zotentha.
Zomangira zambiri za jakisoni zimatera pakati pa 18:1 ndi 25:1, ndi 20:1 mpaka 22:1 zomwe zimafanana pamakina anthawi zonse. Wotsogolera mzati akuphimba chithunzi chonse chathujekeseni akamaumba mbiya kalozera.
Chifukwa Chake Jakisoni L/D Ndi Wamfupi Kuposa Extrusion L/D
Ma Extruders nthawi zambiri amathamanga 25: 1 mpaka 33: 1. Zomangira jekeseni zimakhala zazifupi, ndipo chifukwa chake ndi kuzungulira, osati mwambo.
Chomangira cha extruder chimazungulira mosalekeza. Zinthu zimaloŵa kumapeto kwina, n’kudutsa, n’kuchoka mbali inayo. Palibe chomwe chimadikirira.
Chitsulo cha jekeseni chimagwira ntchito pophulika. Imazungulira kuti ipange pulasitiki kuwombera kumodzi, kubweza, kenako kuyima. Amabaya, ndipo nkhunguyo imazizira. Pa zonsezi, kusungunula kale mu mbiya kumakhala chete ndipo kumakhala kotentha.
Kudikira kumeneko ndiko kusiyana konse. Mgolo wautali umakhala ndi kusungunuka kochulukirapo, ndipo pamakina ojambulira, kusungunuka kochulukira kumatanthauza zinthu zambiri zomwe zimadikirira mozungulira kwambiri. Kwa utomoni wosamva kutentha, kutalika kowonjezera sikuli mphamvu yowonjezera. Ndi mbiri yowonjezereka ya kutentha.
Chifukwa chake kapangidwe ka jakisoni amawongolera mphamvu yosungunuka motsutsana ndi nthawi yokhalamo, pomwe ma extrusion nthawi zambiri amangogula mphamvu yosungunuka.
Zomwe Palibe Amene Akukuuzani: Simungasinthe L / D
Zolemba za L / D zimalankhula ngati mumasankha nambala. Pa makina omwe muli nawo kale, mulibe.
L imakonzedwa ndi mbiya.Mgolo ndi chotengera choponderezedwa ndi makina chomwe chimatsekeredwa mu chimango cha makina, chokhala ndi chotenthetsera, kukhosi kwake, ndikuyika zonse zomangidwa mozungulira utali umodzi. Palibe amene amapanga mbiya yotalikirapo.
Chifukwa chake chosinthika chokhacho chomwe chatsala mu L/D ndi D, screw diameter. Sinthani m'mimba mwake, ndipo chiŵerengero chimasintha nacho, chifukwa kutalika pamwamba pa mzerewo sikusuntha.
Ichi ndichifukwa chake opanga makina amalemba ma diameter awiri kapena atatu pamakina omwewo. Sakukupatsani ma size atatu owombera. Akukupatsirani mfundo zitatu panjira yokhotakhota, ndipo kukula kwake ndi chimodzi mwazinthu zomwe zikuyenda.
Screw Diameter: Chingwe Choyendetsa Chilichonse
Mu mbiya yokhazikika, kusankha kumodzi kumasuntha zinthu zinayi nthawi imodzi. Mvetsetsani tebulo ili ndipo mukumvetsetsa jekeseni L/D.
| Ngati musankha... | Zing'onozing'ono screw diameter | Zokulirapo screw diameter |
|---|---|---|
| Chiwerengero cha L/D | Zapamwamba(L yemweyo, wocheperako D) | Pansi(L yemweyo, wamkulu D) |
| Kuwombera mphamvu | Zing'onozing'ono(kuchepa kwa voliyumu pa mm wa sitiroko) | Chachikulu |
| Kuthamanga kwa jekeseni kulipo | Zapamwamba(mphamvu yomweyo pa malo ang'onoang'ono) | Pansi |
| Mphamvu yosungunuka pakuwombera | Zabwino(zambiri L/D pazakuthupi zochepa) | Wochepa wowolowa manja |
| Nthawi yogona ya gawo lopatsidwa | Wamfupi(kuwombera kumagwiritsa ntchito mbiya yaying'ono) | Kutalikirapo |
| Zovala | Zigawo zolondola zing'onozing'ono, makoma opyapyala, maviscosity apamwamba komanso ma resins osamva kutentha | Magulu akuluakulu, ma resin azinthu, zigawo zokhuthala |
Werenganinso mzere wokakamiza, chifukwa umasankha ntchito zambiri kuposa momwe anthu amayembekezera. Makina a hydraulic kapena magetsi oyendetsa makina amapereka mphamvu yokhazikika kumbuyo kwa screw. Kupanikizika ndi mphamvu yogawidwa ndi dera. Zomangira zing'onozing'ono zimakhala ndi malo ocheperako, kotero mphamvu yomweyo imatulutsa mphamvu yosungunuka kwambiri.
Ichi ndichifukwa chake ntchito yapakhoma yopyapyala komanso yowoneka bwino kwambiri nthawi zambiri imagwera pa screw yaying'ono: imatha kukankhira kusungunuka m'bowo lolimba lomwe sikona yayikulu singadzaze. L / D yapamwamba yomwe imabwera nayo ndi bonasi, osati mwangozi.
Komanso werengani mzere wokhalamo. Ndi amene amasankha mwakachetechete ngati PC yanu chikasu.
Momwe L/D Imakhudzira Kukula kwa Kuwombera
Kunena zoona, L/D sikuyika kukula kwa kuwombera. Diameter ndi stroke do: voliyumu yowomberedwa ndi malo ozungulira a screw omwe amachulukitsidwa ndi kutalika kwake.
Koma pamakina enieni simungathe kuwalekanitsa, chifukwa m'mimba mwake womwewo womwe umayika kuwombera kwanu kumayikanso L / D yanu. Sankhani wononga yaying'ono ya kagawo kakang'ono kolondola, ndipo mwasankha L/D yapamwamba nthawi yomweyo.
Zotsatirapo zake zimakhala zosangalatsa. Zomangira zomwe zimakupatsirani kuwomberako pang'ono zimakupatsirani kutalika kosungunuka pa gramu imodzi yazinthu komanso kuthamanga kwambiri kwa jakisoni. Zinthu zitatuzi zimagwirizana ndi ntchito zomwezo, chifukwa chake malonda amayenda mwaukhondo nthawi zambiri.
Kumene kumasiya kukhala osangalala ndi pamene mukakamiza gawo pa screw screw. Thamangani pang'ono pang'onopang'ono pa screw ya m'mimba mwake ndipo mumapeza zoyipa kwambiri: L/D yotsika, voliyumu yayikulu yofananira ndi kuwombera kwanu, ndi zinthu zomwe zimazungulira kutentha kwa nthawi yayitali kwambiri.
Nthawi Yokhala: Wakupha Wabwino Mutha Kuwerengera
Nthawi yokhalamo ndi nthawi yomwe chidutswa cha polima chimatentha mkati mwa mbiya chisanabayidwe. Ndi nambala yocheperako kwambiri pakuumba jakisoni, ndipo mutha kuyerekeza mumasekondi makumi atatu.
Nthawi yokhala ≈ (kuchuluka kwa mbiya ÷ kukula kwanu) × nthawi yozungulira
Onse mphamvu mu mayunitsi ofanana. Tengani kuwombera kuchokera pamakina a makina.
Chitani chitsanzo. Makina okwana 200 g a mphamvu yowombera, yomwe imakhala ndi gawo la 20 g pa masekondi 30. Chiŵerengerocho ndi 10, kotero kusungunula kumakhala pafupifupi maulendo khumi. Nthawi yokhalamo ndi pafupifupi masekondi 300, kapena mphindi zisanu.
Mphindi zisanu pa kutentha kwasungunuka ndi nthawi yayitali ya PC, POM, PET, kapena PVC. Palibe zokonda zanu zomwe zalakwika. Gawolo ndi laling'ono kwambiri kuti ligwirizane ndi mbiya, ndipo zinthuzo zikuphika pamene ikudikirira nthawi yake.
Tsopano sunthani ntchitoyi ku screw yaying'ono. Kuchuluka kwa kuwombera kumatsika, kunena kuti, 80 g. Gawo lomwelo la 20 g tsopano limagwiritsa ntchito kotala la mbiya, kusungunula kumadutsa mikombero inayi m'malo mwa khumi, ndipo nthawi yokhalamo imafika pafupifupi mphindi ziwiri.
Simunasinthe malo. Munasintha screw diameter, ndipo vuto lakuwonongeka linapita nalo.
Gulu la 20-80% Shot Capacity Bndi
Chitsogozo chamakampani omwe amatchulidwa kawirikawiri ndikusunga kuwombera kwanu kwinakwake pakati pa 20% ndi 80% ya mphamvu yomwe makinawo amawombera. Tsimikizirani gululo motsutsana ndi buku la makina anu, koma malingaliro kumbuyo kwake amakhala paliponse.
Pamwamba pa gulu, nthawi yokhalamo imakhala yayitali. Zofunika zimapanga maulendo ambiri kupyolera mu kutentha, ndipo utomoni wosamva kutentha umawonongeka. Uku ndiye kulephera kwa njira yomwe ili pamwambapa.
Pamwamba pa gulu, zinthu ziwiri zimasweka. Palibe mbiya yokwanira yoti igwire khushoni yoyenera, kotero kulongedza kumawombera mosagwirizana. Ndipo screw ili ndi nthawi yocheperako komanso kutalika kuti isungunuke mbiya yodzaza ndi zinthu, kotero kuti kusungunuka kwake kumakhala kovuta pamene mukufunsa zambiri.
Malo pakati pa gululo ndipo makina ali ndi malo ogwirira ntchito. Ngati gawo lanu likhala panja pake, kukonza koyenera ndi kozungulira kosiyana, kapena makina ena, osati machitidwe olimba mtima.
Momwe L/D Imakhudzira Ubwino Wosungunuka
Utali ndi mphamvu yosungunuka, ndipo mphamvu yosungunuka ndi yabwino.
L/D yochulukirapo imapereka kusungunuka kwathunthu.Ma pellets olimba amayenera kuyenda molunjika pakhoma la migolo yotentha, kotero ochepa mwa iwo amakhala osasungunuka. Madontho olimba ndi ma lens ophatikizika mu gawoli ndi zolephera zosungunuka, ndipo kutalika kumalimbana nawo.
Kuchuluka kwa L / D kumapereka kusungunuka kofanana.Kutentha kumatuluka, mtundu ndi zodzaza zimagawidwa bwino, ndipo kusungunuka komwe kumafika pa cheke kumagwirizana kwambiri kuchokera pakuwombera mpaka kuwomberedwa. Izi zimawoneka ngati zenera lalikulu la ndondomeko.
Kuchuluka kwa L/D kumaperekanso mbiri yotentha kwambiri.Utali womwewo womwe umasungunuka bwino umagwiranso ntchito nthawi yayitali, ndipo kwa PVC, PC, POM, ndi PET, ndizo mtengo, osati phindu.
Choncho Sungunulani khalidwe si nkhani ya zambiri ndi bwino. Ndilo lolingana: kutalika kokwanira kusungunuka kwathunthu, osati kuchuluka kwa migolo kotero kuti zinthu zimadikirira kuti zigwiritsidwe ntchito. Pamene mphamvu yosungunuka ndizovuta zanu, chotchinga chotchinga chimachikweza popanda kuwonjezera millimeter ya mbiya.
Kusankha L / D ndi Diameter ndi Resin ndi Gawo
Ikani malonda pamodzi ndi kusankha kumachokera ku utomoni ndi gawolo.
| Mkhalidwe wanu | Tsatirani | Chifukwa chiyani? |
|---|---|---|
| Tizigawo tating'onoting'ono tokhala ndi mipanda yolondola | Zowononga zazing'ono, zokwera L/D | Kuthamanga kwa jekeseni wapamwamba kumadzaza zigawo zoonda; kusungunuka kwabwino pa gramu; nyumba yayifupi |
| Utoto wosamva kutentha (PC, POM, PET, PVC) | Chophimba chaching'ono chowombera; kumapeto kwa L/D gulu | Nthawi yogona ndi mdani. Pitirizani kuwombera kwakukulu ndi mphamvu ya mbiya |
| Utoto waukadaulo wapamwamba kwambiri | Zowononga zazing'ono, zokwera L/D | Imafunika kukakamizidwa kudzaza ndi kutalika kuti isungunuke bwino |
| Kuwombera kwakukulu, utomoni wazinthu (PE, PP, PS) | Zowononga zazikulu, zotsika L/D | Amatsogolera luso; ma resin awa amalekerera kutalika kosungunuka kosungunuka |
| Zigawo zolimba, zozungulira pang'onopang'ono | Zowononga zazikulu, nyumba yowonera | Kuzungulira kwautali kumachulukitsa nthawi yokhalamo. Werenganinso musanachite |
| Magalasi odzaza kapena abrasive compound | Diameter pa gawo; kusintha kwapamwamba | L/D imatsatira gawolo. Yankho la kuvala ndi bimetallic bore, osati kutalika kosiyana |
| Zosasungunuka pakutulutsa kwakukulu | M'mimba mwake womwewo; chipika chotchinga | Muyenera kusungunuka, osati kutalika kwa migolo. Mgolo sikusintha mulimonse |
Onani mizere iwiri yomaliza. Awiri mwa mavuto ambiri amawumba kubweretsa kwa ife si L/D mavuto nkomwe, ndi kugula osiyana wononga awiriwa kuwathetsa kumawononga ndalama.
Zolakwa Zodziwika za L/D Pakuumba jekeseni
- Kutengera extrusion L/D.Nambala ya 30:1 kuchokera pa tebulo la extruder yomwe imayikidwa pa jekeseni ya jekeseni imanyalanyaza vuto la nthawi yokhalamo lomwe limatanthawuza jekeseni. Makina awiriwa amagwira ntchito zosiyanasiyana.
- Kungotenga nthawi yayitali ndikwabwino.Kutalika kowonjezereka kumasungunuka kwambirindimbiri yotentha kwambiri. Pa utomoni wosamva kutentha, wachiwiri amapambana ndipo zinthuzo zimawonongeka.
- Kunyalanyaza chiŵerengero cha kuwombera ndi mphamvu.Vuto lodziwika bwino lomwe timaliwona likutsatiridwa ndi geometry ndi gawo laling'ono lophika mu mbiya yayikulu. Palibe amene amachifufuza, chifukwa sichipezeka pazithunzi zilizonse.
- Kukhulupirira L / D kungasinthidwe pamakina omwe alipo.Izo sizingakhoze. Mgolo umayika L. M'mimba mwake yokha ndiyo yomwe mungasankhe.
- Kuimba mlandu L/D pavuto losungunuka.Ngati ma unmelts amawoneka akukwera kwambiri, mphamvu yanu yosungunuka ndi yochepa, osati mbiya yanu. Chotchinga chotchinga chimakonza zomwe zili mumgolo womwewo.
- Kuimba mlandu L/D chifukwa cha vuto la mavalidwe.Kutsika kutsika pa liwiro lomwelo wononga ndi kuvala chilolezo, osati geometry. Muyeseni musanakonzenso chilichonse.
Momwe Mungayandikitsire Chipika Choyenera
Wopanga zowononga amapanga kuchokera pazomwe mumawauza. Tumizani izi, ndipo kukula kwake ndi malingaliro a geometry akutsatira.
- Mtundu wa makina, modeli, ndi makulidwe apano.Chithunzi cha nameplate chimakwirira zambiri, ndipo chimatiuza kutalika kwa mbiya yomwe mukugwira ntchito mkati mwake.
- Kuchuluka kwa kuwombera kwa makina,ngati mukudziwa, ndi gawo lanu lenileni kulemera.
- Nthawi yozungulira.Ndi manambala awiri omwe ali pamwambapa, nthawi yokhalamo ikhoza kuwerengedwa kwa inu.
- Resin, kalasi, ndi zodzaza.Izi zimayendetsa mbiri yoponderezedwa ndi chithandizo chapamwamba monga momwe zimakhalira.
- Chilema chomwe mukufuna chapita.Malo achikasu pamalo okhala. Zosasungunuka zimaloza pakusungunuka. Kuwombera kwakufupi kumawonetsa kukakamizidwa kapena pa cheke mphete. Aliyense ali ndi yankho losiyana.
- Chojambula, kapena zomangira zanu zakale.Mwinanso titha kupanga makina anu. Gawo lowonongeka limayesedwa pazida za CMM kufika ±0.01 mm ndipo geometry imamangidwanso.
Chifukwa Chiyani Mumagwira Ntchito Ndi Nanhaiya
Titumizireni gawo la kulemera kwake, nthawi yozungulira, ndi mtundu wamakina, ndipo tidzayendetsa masamu anthawi yogona tisanatchule chilichonse. Nthawi zina yankho ndi losiyana screw diameter. Nthawi zina ndi chotchinga chotchinga mu mbiya yomwe muli nayo kale. Nthawi zina zimakhala kuti ntchito yanu ndi ya makina osiyana, ndipo ife titero.
Pamene screw yatsopano ndi yankho, Nanhaiya wamangazomangira jekesenindi migolo kwa zaka zoposa makumi awiri, mu 38CrMoAlA, 42CrMo, SKD-61, ndi chitsulo chosapanga dzimbiri, nitrided kapena bimetallic yokhala ndi 2.5–3 mm tungsten-bearing alloy layer mpaka 62 HRC komwe chakudya chimafuna.
Timamanga ku zojambula zanu, makina opangira, kapena zitsanzo zowonongeka, ndim'maloyogwirizana ndi mitundu yayikulu yamakina, kuyitanitsa kochepa kwa seti imodzi, ndi mawu owerengera mkati mwa maola 12.
Kulimbana ndi chikasu, kusasungunuka, kapena kuwombera mwachidule? Tumizani mtundu wamakina anu, kulemera kwa gawo, nthawi yozungulira, ndi utomoni. Tikuwuzani ngati ndi L/D, m'mimba mwake, mphamvu yosungunuka, kapena kuvala, ndikubwereza mawu mkati mwa maola 12.
Pezani Malangizo a ScrewMafunso Ofunsidwa Kawirikawiri
Kodi chiŵerengero cha L/D cha jekeseni wopangira jekeseni ndi chiyani?
Zomangira zambiri zimayendera pakati pa 18:1 ndi 25:1, ndi 20:1 mpaka 22:1 zomwe zimafanana pamakina anthawi zonse. Utoto wosamva kutentha umakonda malekezero aafupi chifukwa zinthu zimatenga nthawi yochepa yotentha. Mapulasitiki a engineering omwe amafunikira kusungunuka bwino amakomera nthawi yayitali.
Kodi ndingasinthe chiŵerengero cha L/D pamakina anga omangira jakisoni?
Osati mwachindunji. Kutalika kumakonzedwa ndi mbiya, yomwe imapangidwa ndi makina. Zomwe mungasinthe ndi screw diameter, ndipo chifukwa L amakhalabe yemweyo, mainchesi ang'onoang'ono amapereka L/D apamwamba. Chisankho chimodzi chimenecho chimasinthanso mphamvu yanu yowombera komanso kuthamanga kwa jakisoni komwe kulipo.
Kodi chiŵerengero cha L/D chimakhudza kukula kwa kuwombera?
Mosalunjika, komanso mosapatukana. Voliyumu yowombera imachokera ku screw diameter ndi stroke, osati kuchokera ku L/D. Koma pa mbiya yokhazikika, m'mimba mwake yomwe imayika kuwombera kwanu imayikanso L / D yanu. Sankhani zowononga zazing'ono zowombera pang'ono, ndipo mumapeza mphamvu yokwera ya L/D ndi jekeseni wokwera nthawi imodzi.
Kodi ndingawerengere bwanji nthawi yokhala mu jekeseni?
Gawani kuchuluka kwa kuwombera kwa makinawo ndi kukula kwanu kwenikweni, ndikuchulukitsa ndi nthawi yozungulira. Makina a 200 g omwe ali ndi gawo la 20 g pa masekondi 30 amapereka pafupifupi masekondi 300, kapena mphindi zisanu, pokhala. Ndi nthawi yayitali yogwira PC, POM, PET, kapena PVC pa kutentha kosungunuka.
Chifukwa chiyani jekeseni L/D ndi lalifupi kuposa L/D extrusion?
Chifukwa jekeseni wononga ntchito pophulika. Imawombera kuwombera, kenako imayima pomwe makinawo amabaya ndipo nkhungu imazizira, ndipo kusungunula mu mbiya kumakhala kotentha nthawi yonseyi. An extruder amathamanga mosalekeza ndipo palibe amadikira. Utali wowonjezera wa mbiya pamakina a jakisoni ndi mbiri yakale yotentha, osati kusungunuka kowonjezera, kotero zomangira jekeseni zimakhala zazifupi.
Ndi kuchuluka kwa migolo yanji yomwe kuwombera kwanga ndikoyenera kugwiritsa ntchito?
Chitsogozo chomwe chimatchulidwa kawirikawiri chimakhala pafupifupi 20% mpaka 80% ya kuwombera kovoteledwa, ndipo buku lanu lamakina ndilo ulamuliro. Pansi pa gululo, nthawi yokhalamo imatenga nthawi yayitali ndipo zinthu zomwe sizimva kutentha zimawonongeka. Pamwamba pake, palibe malo a khushoni yoyenera komanso nthawi yochepa yosungunula mbiya yodzaza.
Kodi L/D yapamwamba ndiyabwino pakuumba jekeseni?
Osati zokha. Kutalika kochulukirapo kumapereka kusungunuka kokwanira komanso kusungunuka kofananako, komwe kumapangitsa kuti ukhale wabwino. Imasunganso zinthu zambiri zotentha kwa nthawi yayitali, zomwe zimawononga utomoni wosamva kutentha. L/D yoyenera imasungunula zinthu zanu popanda kuzigwira motalika kuposa momwe zimafunikira.
Mbali zanga zachikasu. Kodi limenelo ndi vuto la L/D?
Nthawi zambiri ndi vuto la nthawi yokhalamo, lomwe ndi vuto la kukula kwa mbiya. Yambani kuwerengera kaye malo okhala. Ngati gawo laling'ono likuphika mu mbiya yayikulu, palibe kutentha kwa kutentha ndipo palibe wononga geometry yomwe ingakonze. Makina ocheperako, kapena makina ang'onoang'ono, adzatero.
