Jekiseni sikuruu L/D reshiyoiri kushanda kureba yakakamurwa nescrew diameter, uye majekiseni mazhinji masiruuru anomhanya 18:1 kusvika 25:1. Hezvino izvo zvisina pepa rinokuudza: haugone kushandura L/D pamushini waunotova nawo. Kureba kunogadziriswa nedhiramu. Zvaunogona kuchinja ndizvoscrew diameter, uye mudhiramu rakamisikidzwa iro sarudzo imwe chete inofambisa L/D, pfuti simba, uye jekiseni kumanikidzwa pamwe chete, munzira dzakapesana. Siruuru diki inopa yakakwira L/D, pfuti diki, uye kuwedzera kumanikidza. Matanidza kutengeserana kune yako resin uye chikamu chako, uye yakawanda L / D mibvunzo vanozvipindura pachavo.
Zvinorehwa neL/D Ratio pane jekiseni screw
L/D kureba kwekushanda kwescuru (L) yakakamurwa nedhayamita yayo yekunze (D). Siruuru yakareba zvakapetwa ka22 pane yakafara ine L/D ye22:1.
Reshiyo inoyera nehukuru. 40 mm sikuruu pa22:1 ine hurefu hwekushanda hwe880 mm. Siruuru ye80 mm pa22:1 inoreba 1,760 mm. Same ratio, zvakasiyana kwazvo michina.
Izvo reshiyo inotsanangura chaizvoyakawanda sei runway iyo screw inofanirwa kuita basa rayo. Kudyisa, kunyunguduka, uye kuyera zvese zvinoitika paurefu ihwohwo. Kureba kwakawanda kunoreva kuwedzera kunyunguduka uye kuwedzera kusanganisa. Kureba kushoma kunoreva kushoma kwezvose, uye nguva shoma yekuti zvinhu zvigare zvichipisa.
Majekiseni mazhinji anomhara pakati pe18:1 ne25:1, aine 20:1 kusvika 22:1 iyo inowirirana pamichina yechinangwa chese. Nhungamiro yembiru inovhara mufananidzo uzere mune yedujekiseni molding screw barrel guide.
Sei Jekiseni L/D Iri Ipfupi Pane Extrusion L/D
Extruders inowanzoita 25:1 kusvika 33:1. Jekiseni screws anogara mapfupi, uye chikonzero kutenderera, kwete tsika.
Iyo extruder screw inotenderera ichienderera. Zvinhu zvinopinda kune mumwe mugumo, zvinofamba, uye zvichisiya kune imwe. Hapana chinomirira.
Injection screw inoshanda mukuputika. Inotenderera kuita purasitiki imwe pfuti, inodzora, yobva yamira. Inobaya, uye mold inotonhora. Munguva yose iyo, iyo yakanyunguduka yatova mubhodhoro inogara yakanyarara uye inoramba ichipisa.
Kumirira ikoko ndiko mutsauko wose. Bharamu refu rinobata kunyungudika kwakawanda, uye pamushini wejekiseni, kunyungudika kwakawanda kunoreva zvinhu zvakawanda zvakamirira kuburikidza nemadhizaini akawanda. Kune resin inonzwa kupisa, kureba kwekuwedzera hakusi kuwedzera simba. Ndiyo nhoroondo yekuwedzera kupisa.
Saka jekiseni dhizaini inoyera simba rekunyunguduka pakatarisana nenguva yekugara, nepo extrusion kazhinji inotenga kunyungudika.
Chinhu Hapana Anokuudza: Haugone Kuchinja L / D
Zvinyorwa zve L / D zvinotaura sekunge iwe unowana kutora nhamba. Pamuchina waunotova nawo, hauite.
L inogadziriswa nedhiramu.Iyo dhiramu mudziyo wakadhindwa wakasungirirwa muchina furemu, iine nzvimbo dzekupisa, huro yekudyisa, uye kukwira zvese zvakavakwa zvakatenderedza hurefu humwe. Hapana anoita dhiramu refu.
Saka iyo chete shanduko yasara muL/D ndiD, iyo screw diameter. Shandura dhayamita, uye chiyero chinoshanduka nacho, nekuti kureba pamusoro pemutsara haambofambi.
Ichi ndicho chikonzero vanovaka muchina vanonyora maviri kana matatu screw diameters yemuchina mumwe chete. Ivo havasi kukupa matatu saizi yekupfura. Ivo vari kukupa mapoinzi matatu pane yekutengeserana-off curve, uye saizi yepfuti ndiyo imwe chete yezvinhu zvinofamba.
Screw Diameter: Iyo Lever Inofambisa Zvese
Mubhodhoro rakagadziriswa, imwe sarudzo inofambisa zvinhu zvina panguva imwe chete. Nzwisisa tafura iyi uye unonzwisisa jekiseni L/D.
| Kana ukasarudza a... | Diki screw diameter | Yakakura screw diameter |
|---|---|---|
| L/D reshiyo | Higher(zvakafanana L, diki D) | Lower(akafanana L, mukuru D) |
| Shot capacity | Mudiki(yakaderera vhoriyamu pamm yesitiroko) | Zvikuru |
| Jekiseni pressure iripo | Higher(simba rakafanana panzvimbo diki) | Lower |
| Kunyunguduka simba papfuti | Zvirinani(yakawanda L/D yezvinhu zvishoma) | Ane rupo rushoma |
| Nguva yekugara yechikamu chakapihwa | Mupfupi(pfuti inoshandisa yakawanda yedhiramu diki) | Yakareba |
| Suits | Zvikamu zvidiki zvakanyatsonaka, madziro matete, high-viscosity uye kupisa-sensitive resins | Mapfuti akakura, marezeni emidziyo, zvikamu zvakakora |
Verenga mutsara wekumanikidza zvakare, nekuti inosarudza mamwe mabasa kupfuura anotarisirwa nevanhu. Muchina we hydraulic kana electric drive unoburitsa simba rakamisikidzwa kuseri kwescrew. Dzvinyiriro isimba rakakamurwa nenzvimbo. Siruuru diki ine nzvimbo shoma yekumeso, saka simba rimwe chetero rinoburitsa yakanyanya kunyungudika pressure.
Ndokusaka basa rakatetepa-madziro uye epamusoro-viscosity richiwanzogara pane diki screw: inogona kusundira kunyungudika mugomba rakamanikana iro guru guru risingagoni kuzadza. Iyo yepamusoro L/D inouya nayo ibhonasi, kwete masanga.
Uye verengawo mutsara wekugara. Ndiyo inosarudza chinyararire kana PC yako yero.
Iyo L/D Inobata Sei Shot Size
Zvakanyanya, L / D haiseti saizi yepfuti. Diameter uye sitiroko ita: vhoriyamu yekupfura inzvimbo yescrew's cross-sectional inowedzerwa nekureba kwayo.
Asi pamushini chaiwo haugone kuvaparadzanisa, nekuti iyo dhayamita imwe chete inoseta pfuti yako inoisawo L/D yako. Sarudza diki screw yediki chaiyo chikamu, uye iwe wasarudza yepamusoro L / D panguva imwe chete.
Muuyo unoshanda unofadza. Iyo screw inokupa pfuti diki zvakare inokupa iwe kureba kwekunyungudika pagiramu rezvinhu uye yakakwirira jekiseni pressure. Izvo zvivakwa zvitatu zvinoenderana nemabasa mamwe chete, ndosaka kutengeserana kunoshanda zvakachena kazhinji pane kwete.
Painomira kufara ndipo paunomanikidza chikamu pascuru isiriyo. Mhanya pfuti diki pane yakakura-dhayamita sikuru uye unowana yakaipisisa pane ese: yakaderera L/D, hombe yebhori vhoriyamu zvinoenderana nepfuti yako, uye zvinhu zvinotenderera mukupisa kwenguva yakareba.
Nguva Yekugara: Iyo Yemhando Muurayi Iwe Unogona Kuverenga
Nguva yekugara ndeyenguva yakareba sei chikamu chakapihwa chepolymer chinoramba chichipisa mukati medhiramu chisati chabayiwa. Ndiyo nhamba yakadzikiswa zvakanyanya mukuumbwa kwejekiseni, uye unogona kuifungidzira mumasekonzi makumi matatu.
Nguva yekugara ≈ (barrel shot capacity ÷ saizi yako yekupfura) × nguva yekutenderera
Zvose zvikwanisiro muzvikamu zvakafanana. Tora huwandu hwepfuti kubva pachiyero chemuchina.
Ita muenzaniso. Muchina une chiyero che 200 g yekukwanisa kupfura, uchiita 20 g chikamu pamakumi matatu emasekondi. Reshiyo igumi, saka kunyungudika kunogara mukati mezvikamu gumi. Nguva yekugara inenge 300 seconds, kana maminitsi mashanu.
Maminitsi mashanu pakunyunguduka tembiricha inguva yakareba yePC, POM, PET, kana PVC. Hapana chinhu pamusoro pezvirongwa zvako chisina kunaka. Chikamu chacho chinongova chiduku zvikuru kune chirongo, uye zvinhu zviri kubika ichimirira nguva yacho.
Zvino fambisa basa iro kune diki screw. Shot capacity inodonha kusvika, toti, 80 g. Iyo imwecheteyo 20 g chikamu zvino inoshandisa chikamu chechina chebhari, iyo inonyunguduka inogara mukati mezvikamu zvina pachinzvimbo chegumi, uye nguva yekugara inowira angangoita maminetsi maviri.
Iwe hapana chawakachinja. Iwe wakachinja screw diameter, uye dambudziko rekudzikisira rakaenda naro.
Iyo 20–80% Shot Capacity Buye
Inowanzo kutaurwa indasitiri nhungamiro ndeyekuchengeta pfuti yako pane imwe nzvimbo iri pakati pe20% ne80% yemuchina wakayerwa kupfura kugona. Simbisa bhendi richipesana negwaro remuchina wako, asi pfungwa iri kumashure kwayo inobata kwese.
Pasi pebhendi, nguva yekugara inotora nguva refu. Material anoita nzendo dzakawandisa kuburikidza nekupisa, uye marezeni anonzwa kupisa anoshatisa. Uku ndiko kutadza kubatwa neformula iri pamusoro.
Pamusoro pebhendi, zvinhu zviviri zvinoputsika. Iko hakuna dhiramu rakakwana rasara kubata cushion chaiyo, saka kurongedza kunowana kusingawirirane kupfurwa. Uye screw ine nguva shoma uye kureba yekunyungudutsa dhiramu rinenge rakazara rezvinhu, saka kunyungudika kunaka kunotambura chaizvo kana iwe uchibvunza yakawanda yacho.
Imba pakati pebhendi uye muchina une nzvimbo yekushanda. Kana chikamu chako chikagara kunze kwayo, iyo chaiyo gadziriso yakasiyana screw dhayamita, kana mumwe muchina, kwete gamba seti yemagadzirirwo ekugadzirisa.
Iyo L/D Inobata Sei Melt Hunhu
Kureba ndiko kukwanisa kunyunguduka, uye kunyunguduka ndiko kunaka.
Yakawanda L/D inopa kunyungudika kwakawanda.Solid pellets anezve kufamba achipikisana nemadziro anopisa emubhodhoro, saka mashoma awo anopona seasina kunyungudika. Madonhwe akaoma uye ma-lens-shaped inclusions muchikamu ari kunyunguduka kukanganisa, uye kureba kunorwisana navo.
Yakawanda L/D inopa yakawedzera homogeneous kunyungudika.Tembiricha inobuda kunze, ruvara uye chizadziso zvinogovera zvirinani, uye kunyungudika kunosvika pacheki mhete kunowedzera kuenderana kubva kupfuti kuenda kupfuti. Izvo zvinoratidzika sehwindo rakakura rekuita.
Yakawanda L/D inopawo nhoroondo yekupisa.Hurefu hwakafanana hunonyungudika zvakakwana hunobata zvinhu zvakareba, uye zvePVC, PC, POM, uye PET, iyo inodhura, kwete pundutso.
Saka kunyungudika mhando haisi nyaya yezvimwe zviri nani. Chiyero: hurefu hwakakwana kuti hunyunguduke zvachose, kwete vhoriyamu yakawanda zvekuti zvinhu zvinomirira kwenguva yakareba kuti zvishandiswe. Kana kunyunguduka kuri kumanikidza kwako, barriers screw inoisimudza pasina kuwedzera millimeter yedhiramu.
Kusarudza L / D uye Diameter neResin uye Chikamu
Isa kutengeserana pamwe chete uye sarudzo inowira kunze kweresin uye chikamu.
| Mamiriro ako | Denda wakananga | Sei |
|---|---|---|
| Zvidiki, zvitete-madziro zvakanangana zvikamu | Diki sikuruu, yakakwira L/D | Higher jekiseni pressure inozadza zvikamu zvitete; kunyunguduka kwakanaka pagiramu; kugara kwenguva pfupi |
| Heat-sensitive resin (PC, POM, PET, PVC) | Diki screw for the shot; Mugumo mupfupi weL/D bhendi | Nguva yekugara muvengi. Chengetedza pfuti yakakura maererano nehukuru hwebhari |
| High-viscosity engineering resin | Diki sikuruu, yakakwira L/D | Inoda kumanikidzwa kuzadza uye kureba kuti inyunguduke zvakakwana |
| Mahombe mapfuti, commodity resin (PE, PP, PS) | Siruuru yakakura, yakaderera L/D | Capacity inotungamira; resin idzi dzinoshivirira kureba kwakaderedzwa kunyungudika |
| Zvikamu zvakakora-madziro, zvishoma nezvishoma | Hombe screw, tarisa pekugara | Kutenderera kwakareba kunowedzera nguva yekugara. Recalculator usati wazvipira |
| Girazi-yakazara kana abrasive compound | Diameter pachikamu; shandura iyopamusoro | L/D inotevera chikamu. Mhinduro yekupfeka ndeye bimetallic bore, kwete kureba kwakasiyana |
| Kusanyungudika pakubuda kwepamusoro | Same diameter; barrier screw | Unoda kunyunguduka, kwete kureba kwembiru. Iyo dhiramu haisi kuchinja zvakadaro |
Cherechedza mitsetse miviri yekupedzisira. Maviri ematambudziko akajairika anounzwa nevanoumba kwatiri haasi matambudziko eL / D zvachose, uye kutenga dhayamita yakasiyana sikuruu kugadzirisa iwo kutambisa mari.
Zvakajairwa L/D Zvikanganiso muJekiseni Molding
- Kukopa extrusion L/D.A 30:1 nhamba kubva patafura yekuextruder yakaiswa kune jekiseni screw inofuratira dambudziko rekugara rinotsanangura kuumbwa kwejekiseni. Michina miviri iyi inoita mabasa akasiyana.
- Kutora kureba kuri nani.Hurefu hwakawanda hunowedzera kunyungudukauyenhoroondo yakawanda inopisa. Pamusoro pekupisa-sensitive resin, yechipiri inokunda uye zvinhu zvinoderedza.
- Kuregeredza chiyero chepfuti-ku-kugona.Dambudziko rinonyanya kuzivikanwa remhando yatinoona richiteedzerwa kugeometry chikamu chidiki chekubika mudhiramu hombe. Hapana anoitarisa, nekuti haisi pane chero zvigadziriso skrini.
- Kutenda L / D kunogona kuchinjwa pamushini uripo.Haikwanise. Iyo dhiramu inogadza L. Chete dhayamita ndeyako yekusarudza.
- Kupa mhosva L/D yedambudziko rekunyungudika.Kana kusanyungudika kuchionekwa chete pakubuda kwepamusoro, kugona kwako kunyungudika kupfupi, kwete dhiramu rako. A barrier screw inogadzirisa iyo mudhiramu rimwe chete.
- Kupa mhosva L/D yedambudziko rekupfeka.Kudonha kunobuda panguva imwechete yekumhanyisa screw inopfekwa clearance, kwete geometry. Zviyere usati wagadzirisa chero chinhu.
Maitiro eKuhodha Iyo Right Screw
A screw anogadzira kubva pane zvaunovaudza. Tumira izvi, uye dhayamita uye geometry kurudziro inotevera.
- Chigadzirwa chemuchina, modhi, uye ikozvino screw dhayamita.Iyo nameplate foto inovhara yakawanda yacho, uye inotiudza kureba kwembiru yauri kushanda mukati.
- Yakatemerwa kupfura kugona kwemuchina,kana uchizviziva, uye chikamu chako chaicho uremu.
- Cycle time.Nenhamba mbiri dziri pamusoro, nguva yekugara inogona kuverengerwa iwe.
- Resin, giredhi, uye filler zvemukati.Izvi zvinotyaira iyo compression profile uye iyo yepamusoro kurapwa zvakanyanya sedhayamita.
- Chirema chaunoda chaenda.Yellowing points pakugara. Unmelts inonongedzera pakunyungudika. Mapfuti mapfupi anonongedza kumanikidzwa kana pacheki mhete. Mumwe nemumwe ane mhinduro yakasiyana.
- Dhirowa, kana screw yako yakasakara.Zvimwe zvinoita kuti tivakire kumushini wako. Chikamu chakasakara chinoyerwa paCMM midziyo kusvika ± 0.01 mm uye geometry inovakwazve.
Sei Kushanda Nanhaiya
Titumire uremu hwechikamu, nguva yekutenderera, uye modhi yemuchina, uye isu tichamhanyisa yekugara-nguva arithmetic tisati takutora chero chinhu. Dzimwe nguva mhinduro yakasiyana sikuruu dhayamita. Dzimwe nguva inenge iri barrier screw mudhiramu yauinayo kare. Dzimwe nguva ndezvekuti basa rako nderemumwe muchina, uye isu tichataura kudaro.
Kana screw nyowani ndiyo mhinduro, Nanhaiya akavakajekiseni molding screwsnemadhiramu kweanopfuura makore makumi maviri, mu38CrMoAlA, 42CrMo, SKD-61, nesimbi isina tsvina, nitrided kana bimetallic ine 2.5–3 mm tungsten-bearing alloy layer inosvika 62 HRC panodiwa chikafu.
Isu tinovaka kudhirowa yako, modhi yemuchina, kana sampu yakasakara, nezvinotsivainoenderana nemhando huru dzemuchina, hushoma kurongeka kweseti imwe, uye quote mukati meawa gumi nemaviri.
Kurwa kutsvuka, kusanyungudika, kana kupfura mapfupi? Tumira modhi yemuchina wako, uremu hwechikamu, nguva yekutenderera, uye resin. Isu tichakuudza kana iri L/D, dhayamita, kunyungudika simba, kana kupfeka, uye quote mukati maawa gumi nemaviri.
Wana Screw KurudziroMibvunzo Inowanzo bvunzwa
Chii chinonzi L/D reshiyo yejekiseni rekuumba screw?
Majekiseni mazhinji anomhanya ari pakati pe18:1 ne25:1, aine 20:1 kusvika 22:1 iyo inowirirana pamichina yechinangwa chakajairika. Marezeni anonzwa kupisa anofarira kupera kupfupi nekuti zvinhu zvinopedza nguva shoma zvichipisa. Injiniya mapurasitiki anoda kunyatsonyungudika anofarira magumo akareba.
Ini ndinogona kushandura chiyero cheL/D pamushini wangu wekuumba jekiseni?
Kwete zvakananga. Kureba kunogadziriswa nebhari, iyo inogadzirwa mumushini. Chaunokwanisa kushandura screw dhayamita, uye nekuti L inoramba yakafanana, dhayamita diki rinopa yakakwira L/D. Sarudzo imwe chete iyoyo inoshandurawo simba rako rekupfura uye inowanikwa jekiseni pressure.
Ko reshiyo yeL/D inokanganisa saizi yepfuti?
Zvisina kunanga, uye zvisingaparadzanisiki. Shot vhoriyamu inouya kubva screw diameter uye sitiroko, kwete kubva kuL/D. Asi padhiramu rakagadziriswa, dhayamita inoseta pfuti yako inoisawo L/D yako. Sarudza diki screw yepfuti diki, uye iwe unowana yakakwirira L/D uye yakakwirira jekiseni pressure panguva imwe chete.
Ndinoverenga sei nguva yekugara mukuumba jekiseni?
Govanisa chiyero chemushini chakayerwa kupfura nehukuru hwako hwepfuti, wobva wawedzera nenguva yekutenderera. Muchina we200 g une chikamu che20 g pamasekondi makumi matatu unopa masekonzi anosvika mazana matatu, kana kuti maminetsi mashanu, ekugara. Iyo inguva yakareba kubata PC, POM, PET, kana PVC pakunyunguduka tembiricha.
Sei jekiseni L/D ipfupi pane extrusion L/D?
Nekuti jekiseni screw inoshanda mukuputika. Iyo inoputira pfuti, yobva yamira apo muchina uchibaya uye mold ichitonhorera, uye iyo inonyunguduka mudhiramu inogara ichipisa nguva yese. An extruder inomhanya ichienderera uye hapana chinomirira. Yakawedzera dhiramu kureba pamushini wejekiseni inhoroondo yekupisa, kwete kungonyungudika kwekuwedzera, saka majekiseni ejekiseni anogara ari mapfupi.
Ndeipi muzana yehuwandu hwedhiramu inofanirwa kushandisa pfuti yangu?
Inowanzo kutaurwa kutungamira ingangoita 20% kusvika 80% yeyakatemerwa pfuti kugona, uye yako muchina bhuku ndiro chiremera. Pazasi pebhendi iro, nguva yekugara inomhanya kwenguva refu uye inodzivirira kupisa zvinhu zvinoshatisa. Pamusoro payo, hapana nzvimbo yecushion yakakodzera uye nguva shoma yekunyungudutsa dhiramu rinenge rakazara.
Iyo yakakwira L/D iri nani yekugadzira jekiseni?
Kwete zvoga. Kureba kwakawanda kunopa kunyunguduka kwakakwana uye kunyunguduka kwakafanana, izvo zvinovandudza kunaka. Iyo inobatawo zvimwe zvinhu zvinopisa kwenguva yakareba, izvo zvinosvibisa resin-sensitive resins. Iyo chaiyo L / D inonyungudutsa zvinhu zvako zvachose pasina kuibata kwenguva yakareba kupfuura yainoda.
Nhengo dzangu dziri yellow. Ndiro dambudziko reL/D here?
Kazhinji idambudziko renguva yekugara, rinova dambudziko rekupfura-kusvika-kune-barrel-capacity. Mhanyai kuverenga pekugara kutanga. Kana chikamu chidiki chiri kubika mudhiramu hombe, hapana tembiricha yekugadzika uye hapana screw geometry ichaigadzirisa. Idiki screw diayamita, kana muchina mudiki, uchadaro.
