Jekiseni kuumba zvakajairika kuremara uye zvinokonzera

Jekiseni kuumba zvakajairika kuremara uye zvinokonzera

1. Ongororo yezvinokonzeresa kuputika kwejekiseni zvigadzirwa zvakaumbwa

 

Kutsemuka, kusanganisira filamentous cracks, micro-cracks, top white, cracking, and trauma crisis inokonzerwa nekunamira kwezvikamu nevamhanyi, zvichienderana nenguva yekupaza, inokamurwa kuita demoulding cracking uye application cracking.Pane zvikonzero zvikuru zvinotevera:

 

1. Kugadzirisa:

 

(1) Kana kudzvanywa kwekugadzirisa kwakanyanyisa, kumhanya kwakakurumidza, iyo yakawanda inochajiswa, uye jekiseni uye kumanikidza kubata nguva yakarebesa, zvinokonzeresa zvakanyanya kushushikana kwemukati uye kuputika.

 

(2) Gadzirisa kumhanya uye kudzvanywa kwekuvhura kwe mold kudzivirira kubuda nekutsemuka kunokonzerwa nekukasira kudhirowa.

 

(3) Kunyatso wedzera tembiricha yekuumbwa kuita kuti chikamu chive nyore kugadzira, uye nekudzikisa tembiricha yechinhu kudzivirira kuparara.

 

(4) Dzivirira kuputika nekuda kwe weld line uye kupera kwepurasitiki kunokonzerwa nekuderera kwesimba remagetsi.

 

(5) Kushandiswa kwakakodzera kwe mold release agent, teerera kune kazhinji kubvisa aerosol nezvimwe zvinhu zvakabatanidzwa kune mold surface.

 

(6) Iyo yakasara kushushikana kweiyo workpiece inogona kubviswa neannealing kupisa kurapwa pakarepo mushure mekugadzira kuderedza chizvarwa chekutsemuka.

 

2. Mold:

 

(1) Iyo ejection inofanira kuva yakaenzana.Semuenzaniso, nhamba yemapini ejector uye nzvimbo yemuchinjikwa inofanira kukwana, nzvimbo yekudzikisa inofanira kunge yakakwana, uye nzvimbo yepamusoro inofanira kunge yakanyatsonaka, kuitira kudzivirira kuputika nekuda kwekusagadzikana kwekusagadzikana kwekunetseka mu ejection inokonzerwa ne simba rekunze.

 

(2) Chimiro chechishandiso hachifanirwe kunge chakanyanya kutetepa, uye chikamu chekushandura chinofanira kushandisa arc shanduko zvakanyanya sezvinobvira kudzivirira kushushikana kunokonzerwa nemakona akapinza uye chamfers.

 

(3) Shandisa simbi shoma inopinza sezvinobvira kudzivirira kushushikana kwemukati kubva pakuwedzera nekuda kwekusiyana kwe shrinkage pakati pekuisa uye chikamu.

 

(4) Yakafanira demoulding air inlet channels inofanira kuiswa kune yakadzika pasi pasi kudzivirira kuumbwa kwevacuum negative pressure.

 

(5) Mugero mukuru wakakwana kuita kuti gedhi rigadziriswe kana rave nenguva yekurapa, kuti zvive nyore kudhiza.

 

(6) Iyo sprue bushing inofanira kubatanidzwa nemuromo kudzivirira iyo inotonhora kuti isadhonze uye chikamu chinonamira kune yakagadziriswa difa.

 

3. Zvishandiso:

 

(1) Zviri mukati mezvigadzirwa zvakadzokororwa zvakawandisa, zvichikonzera kushomeka kwezvikamu.

 

(2) Humidity yakanyanyisa, zvichiita kuti mamwe mapurasitiki aite makemikari nemhute yemvura, kuderedza simba uye kukonzera ejection uye kuputika.

 

(3) Iyo pachayo haina kukodzera nharaunda iri kugadziridzwa kana mhando haina kunaka, uye kusvibiswa kwacho kuchakonzera kutsemuka.

 

4. Machine side:

 

Iyo plasticizing simba yemuchina wekuumba jekiseni unofanirwa kuve wakakodzera.Kana iyo plasticizing simba iri diki, haingave yakasanganiswa zvizere uye inove brittle.Kana yakakurisa, inodzikisira.

 

 

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2. Ongororo yezvinokonzeresa mabubbles mune jekiseni akaumbwa zvigadzirwa

 

Iyo gasi yebubble (vacuum bubble) yakatetepa uye ndeyevacuum bubble.Kazhinji kutaura, kana mabubbles akawanikwa panguva yekuvhurwa kwe mold, idambudziko rekukanganisa gasi.Kuumbwa kwevacuum bubbles kunokonzerwa nekusakwana kwekuzadza kwepurasitiki kana kuderera kwekumanikidza.Pasi pekukurumidza kutonhora kwe mold, mafuta ari pakona yegomba anodhonzwa, zvichiita kuti inzwi rive kurasikirwa.

 

Solution:

 

(1) Wedzera iyo jekiseni simba: kudzvanywa, kumhanya, nguva uye huwandu hwezvinhu, uye wedzera iyo yekumashure kudzvanywa kuita kuti kuzadzwa kuzere.

 

(2) Wedzera tembiricha yezvinhu uye kuyerera zvakanaka.Dzikisa tembiricha yemidziyo kuti uderedze shrinkage, uye zvakakodzera kuwedzera tembiricha yeforoma, kunyanya tembiricha yemuno mold panogadzirwa vacuum bubble.

 

(3) Isa gedhi pane gobvu chikamu chechikamu kuti uvandudze kuyerera kwemazino, vamhanyi nemasuwo, uye kuderedza kushandiswa kwemasevhisi ekutsikirira.

 

(4) Kuvandudza mamiriro ekunze ekuumbwa.

 

3. Kuongororwa kweZvikonzero zveWarpage uye Deformation yeInjection Molded Products

 

Chiitiko che deformation, kupeta uye kumonyoroka kwezvigadzirwa zvakaumbwa zvinonyanya kukonzerwa nekuti shrinkage rate munzira yekuyerera yakakura pane iyo yakamira yakatwasuka panguva yekuumbwa kwepurasitiki, izvo zvinoita kuti zvikamu zvipindike nekuda kwekusiyana kwemazinga mune imwe neimwe. direction.Warpage inokonzerwa nekushushikana kukuru kwemukati kwasara muchikamu, izvo zvese zvinoratidzira deformation inokonzerwa nekunyanya kunetseka.Naizvozvo, kutaura chaiko, mold dhizaini inosarudza iyo warpage maitiro ezvikamu.Zvakaoma zvikuru kudzvinyirira tsika iyi nekushandura mamiriro ekuumba.Mhinduro yekupedzisira yedambudziko inofanira kutanga nekugadzira mold nekuvandudza.Ichi chiitiko chinonyanya kukonzerwa nezvinhu zvinotevera:

 

1. Mold:

 

(1) Ukobvu uye kunaka kwezvikamu zvinofanira kuva zvakafanana.

 

(2) Dhizaini yegadziriro yekutonhodza inofanirwa kuita tembiricha yechikamu chega chega chegomba yunifomu, uye gating system inofanirwa kuita kuti zvinhu zviyerere symmetrical kudzivirira kutenderera kunokonzerwa neakasiyana mafambiro uye shrinkage rates.Izvo zvinodikanwa kubvisa density mutsauko, kudzvanywa mutsauko uye tembiricha musiyano mugomba zvakanyanya sezvinobvira.

 

(3) Nzvimbo yekushandura uye makona ehukobvu hwechishandiso chinofanirwa kuve chakatsetseka zvakakwana, uye iine yakanaka yekudzikisa zvivakwa, senge kuwedzera dhizaini yekubvisa, kuvandudza kukwenenzverwa kwenzvimbo inofa, uye kuchengetedza chiyero muiyo ejection system.

 

(4) Mapopoma anofanira kunge akanaka.

 

(5) Wedzera kukora kwemadziro echikamu kana kuwedzera kutungamira kwe-anti-warping, uye simbisa iyo anti-warping kugona kwechikamu nekusimbisa mbabvu.

 

(6) Kusimba kwechinhu chakashandiswa mukuumbwa hakuna kukwana.

 

2. Padivi repurasitiki:

 

Crystalline mapurasitiki ane yakawanda warpage deformation mikana kupfuura amorphous mapurasitiki.Mukuwedzera, mapurasitiki ekristalline anogona kushandisa crystallization process iyo crystallinity inoderera nekuwedzera kwekutonhora uye shrinkage rate inova diki kugadzirisa warpage deformation.

 

3. Kugadzira:

 

(1) Kudzvanywa kwejekiseni kwakakwira zvakanyanya, iyo yekumanikidza kubata nguva yakarebesa, uye tembiricha yekunyunguduka yakadzikira uye kumhanya kwakakurumidza, izvo zvinowedzera kushushikana kwemukati uye kukonzera warping deformation.

 

(2) Tembiricha ye mold yakanyanya uye nguva yekutonhora ipfupi, izvo zvinoita kuti chikamu chiwedzere kupisa panguva yekudhirowa uye ejection deformation inoitika.

 

(3) Deredza screw kumhanya uye kumashure kumanikidza kudzikisa density kudzikamisa chizvarwa chekushushikana kwemukati uchichengetedza iyo shoma yekuchaji.

 

(4) Kana zvichidiwa, mativi ari nyore kuchinjika nekuremara anogona kuumbwa zvinyoro-nyoro kana kugadzirwa obva abviswa.

 

 

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4. Kuongororwa kwemavara emuvara mutsara uye mararamiro emhando yezvigadzirwa zvejekiseni molding

 

Kuitika kwechikanganiso ichi idambudziko rinowanzoitika rezvikamu zvepurasitiki zvine mavara ane masterbatch, kunyangwe masterbatch coloring iri pamusoro pehupfu hwakaoma uye dhayi paste maererano nekugadzikana kwemavara, kuchena kwemavara uye kutama kwemavara.Kuisa mavara, asi kugovera, ndiko kuti, kusanganisa kufanana kwemavara emavara mupurasitiki yakasvibiswa haina kunaka, uye chigadzirwa chakapedzwa chine misiyano yeruvara rwedunhu.

 

Mhinduro huru:

 

(1) Wedzera tembiricha yechikamu chekudyisa, kunyanya tembiricha kumucheto kumashure kwechikamu chekudyisa, kuitira kuti tembiricha iri padyo kana kuti yakakwira zvishoma pane tembiricha yechikamu chekunyunguduka, kuitira kuti masterbatch inyunguduke nekukurumidza sezvinobvira. painopinda muchikamu chekunyunguduka, inokurudzira yunifomu kusanganiswa nekuderedzwa, uye inowedzera mukana wekusanganiswa kwemvura.

 

(2) Pasi pemamiriro ekugara screw kumhanya, kuwedzera kumashure kumanikidza kunogona kuvandudza tembiricha yekunyunguduka uye kuveura mhedzisiro mudhiramu.

 

(3) Shandura mold, kunyanya gating system.Kana gedhi rakakura kwazvo, kana kunyungudika kuchipfuura, mhirizhonga inoyerera haina kunaka, uye kuwedzera kwekushisa hakusi kwakakwirira, saka haisi yunifomu, uye ribhoni mold cavity inofanira kuderedzwa.

 

5. Kuongororwa kwezvikonzero zvinokonzera shrinkage uye kuora mwoyo kwezvigadzirwa zvakagadzirwa nejekiseni

 

Munguva yekuumbwa kwejekiseni, iyo shrinkage yechigadzirwa chinhu chinowanzoitika.Zvikonzero zvikuru zveizvi ndezvi:

 

1. Padivi remuchina:

 

(1) Kana buri remuromo rakakurisa, simbi yakanyungudutswa inoyerera ichidzokera shure uye ichiderera, uye kana iri diki, kupikisa kuchave kwakakurisa uye huwandu hwezvinhu hunenge husina kukwana.

 

(2) Kana iyo clamping simba isina kukwana, iyo flash inodererawo, saka tarisa kana paine dambudziko neiyo clamping system.

 

(3) Kana huwandu hwepurasitiki husina kukwana, muchina une huwandu hukuru hwepurasitiki unofanirwa kusarudzwa kuti utarise kana screw uye mbiya zvakapfekwa.

 

2. Mold:

 

(1) Dhizaini yezvikamu zvinofanirwa kuita kuti ukuru hwemadziro ive yunifomu uye ive nechokwadi chakafanana shrinkage.

 

(2) Iyo yekutonhora uye yekudziya system ye mold inofanirwa kuve nechokwadi chekuti tembiricha yechikamu chimwe nechimwe inoenderana.

 

(3) Iyo gating system inofanira kunge isina kuvharwa uye kushorwa hakufanirwe kuve kwakakura.Semuenzaniso, saizi yemugero mukuru, mumhanyi uye gedhi rinofanira kunge rakakodzera, kutsetseka kunofanira kunge kwakakwana, uye nzvimbo yekuchinja inofanirwa kuve arc shanduko.

 

(4) Tembiricha inofanira kuwedzerwa kune zvidimbu zvitete kuti zvinhu zvifambe zvakanaka, uye tembiricha yeforoma inofanira kudzikiswa pamativi ane madziro akakora.

 

(5) Gedhi rinofanira kuvhurwa zvakaenzanirana, edza kuivhura muchikamu chakakomberedzwa nemadziro echikamu, uye huwandu hwemvura inotonhora hunofanira kuwedzerwa.

 

3. Padivi repurasitiki:

 

Crystalline mapurasitiki anodzikira kupfuura asiri-crystalline mapurasitiki, uye huwandu hwezvinhu hunofanirwa kuwedzerwa zvakafanira panguva yekugadziriswa, kana shanduko yekuchinja inofanirwa kuwedzerwa kupurasitiki kuti ikurumidze kristalllization uye kuderedza shrinkage sag.

 

4. Kugadzirisa:

 

(1) Tembiricha yedhiramu yakawandisa uye vhoriyamu inoshanduka zvakanyanya, kunyanya tembiricha yechoto chemberi.Kune epurasitiki ine hushoma fluidity, tembiricha inofanirwa kuwedzerwa zvakakodzera kuti ive nechokwadi chekutsvedzerera.

 

(2) Kudzvanywa kwejekiseni, kumhanya, uye kumanikidzwa kwemashure kwakadzikira, uye nguva yejekiseni ipfupi, zvekuti vhoriyamu kana density haina kukwana uye shrinkage pressure, kukurumidza, uye back pressure zvakakurisa, uye nguva. yakarebesa, zvichikonzera kupenya uye kupera.

 

(3) Huwandu hwekudyisa, kureva kuti, kana buffer pad yakakura kwazvo, inoshandisa jekiseni kudzvanywa, uye kana iri diki, huwandu hwekudyisa hahuna kukwana.

 

(4) Kune zvikamu zvisingade kurongeka, mushure mejekiseni uye kudzvanywa kwekuchengetedza, iyo yekunze layer yakanyungudutswa uye yakaomeswa, uye chikamu chesangweji chichiri chakapfava uye chinogona kuburitswa, uye mold inoburitswa nekukurumidza sezvinobvira. inogona kutonhodzwa zvishoma nezvishoma mumhepo kana mumvura inopisa., iyo inogona kuita kuti shrinkage depression iite nyore uye isinganyanyi kuoneka pasina kukanganisa kushandiswa.

 

 

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6. Chikonzero chekuongorora kukanganisa kwakajeka kwezvigadzirwa zvakagadzirwa nejekiseni

 

Fusion spots, sirivheri mitsetse, yakatsemuka polystyrene, transparent parts of plexiglass, uye dzimwe nguva shimmering filaments esirivha mitsetse inogona kuonekwa kuburikidza nechiedza.Iyi mitsetse yesirivheri inozivikanwawo sekupenya kana kutsemuka.Izvi zvinokonzerwa nekunetseka kunoitwa mugwara rakamira rekusimba kwekushushikana, uye mapolymer mamorekuru ekushandiswa kwakakodzera ane inorema kuyerera yekutarisa uye anoratidza mutsauko muyero yekupedzwa kwechikamu chisina kutungamirwa.

 

Solution:

 

(1) Bvisa kupindira kwegasi uye kumwe kusvibiswa, uye nyatsoomesa plastiki.

 

(2) Deredza tembiricha yezvinhu, gadzirisa tembiricha yebhari mumatanho, uye zvakakodzera kuwedzera tembiricha yekuumbwa.

 

(3) Wedzera jekiseni pressure uye kuderedza jekiseni kumhanya.

 

(4) Wedzera kana kuderedza pre-plastic back pressure uye kuderedza screw speed.

 

(5) Kuvandudza mamiriro ekunze emumhanyi uye mhango.

 

(6) Chenesa kuvharika kunobvira kwenozzles, vanomhanya nemasuwo.

 

(7) Kupfupisa kutenderera kwekuumba.Mushure mekudzikisa, annealing inogona kushandiswa kubvisa sirivheri mitsetse: ye polystyrene, ichengetedze pa78.°C kwemaminitsi gumi nemashanu, kana pa50°C kweawa imwe, uye ye polycarbonate, kupisa kusvika pamusoro pe 160°C kwemaminitsi akawanda..

 

7. Kuongororwa kwezvikonzero zvemavara asina kuenzana ezvigadzirwa zvakagadzirwa nejekiseni

 

Zvikonzero zvikuru uye zvigadziriso zverudzi rusina kuenzana rwezvigadzirwa zvakaumbwa ndezvinotevera:

 

(1) Kusaparadzirwa zvakanaka kwemavara, izvo zvinowanzoita kuti mapatani aoneke pedyo negedhi.

 

(2) Kugadzikana kwekupisa kwemapurasitiki kana mavara kwakashata.Kudzikamisa toni yeruvara rwezvikamu, mamiriro ekugadzira anofanirwa kunyatsogadziriswa, kunyanya tembiricha yezvinhu, huwandu hwezvinhu uye kutenderera kwekugadzira.

 

(3) Pamapurasitiki ecrystalline, edza kuita kuti kutonhora kwechikamu chimwe nechimwe chechikamu kuenderane.Kune zvikamu zvine misiyano yakakura yemadziro, mavara anogona kushandiswa kuvhara musiyano weruvara.Kune zvikamu zvine yunifomu yemadziro ukobvu, tembiricha yezvinhu uye tembiricha yekuumbwa inofanira kugadziriswa..

 

(4) Chimiro uye gedhi fomu uye chinzvimbo chechikamu chine chekuita pakuzadzwa kwepurasitiki, zvichikonzera chromatic aberration mune zvimwe zvikamu zvechikamu, izvo zvinofanirwa kugadziridzwa kana zvichidikanwa.

 

 

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8. Kukonzeresa kuongororwa kwemavara uye gloss kukanganisa kwejekiseni yakaumbwa zvigadzirwa

 

Mumamiriro ezvinhu akajairwa, kupenya kuri pamusoro pemajekiseni akaumbwa zvikamu zvinonyanya kutsanangurwa nemhando yepurasitiki, colorant uye kupera kweiyo mold pamusoro.Nekudaro, hurema hwakadai seruvara rwepamusoro uye gloss defects, uye yakasviba pamusoro pemavara ezvigadzirwa zvinowanzo kukonzerwa nezvimwe zvikonzero.

 

Zvikonzero uye mhinduro dzeizvi ndeidzi:

 

(1) Kupera kwe mold kwakashata, pamusoro pegomba rine ngura, nezvimwewo, uye kupera kwe mold hakuna kunaka.

 

(2) Magedhi efovhoro haana kukwana, inotonhora slug inofanirwa kukwidziridzwa, mumhanyi, mumhanyi mukuru akakwenenzverwa, mumhanyi uye gedhi rinofanira kukwidziridzwa.

 

(3) Iyo tembiricha yemidziyo uye tembiricha yekuumbwa yakaderera, kana zvichidikanwa, nzira yekudziya yenzvimbo yegedhi inogona kushandiswa.

 

(4) Kumanikidza kwekugadzirisa kwakadzikira, kukurumidza kunonoka, nguva yejekiseni haina kukwana, uye kudzvanywa kwemashure hakuna kukwana, zvichikonzera kusabatana kwakashata uye nzvimbo yakasviba.

 

(5) Purasitiki inofanira kunge yakanyatsogadzirwa nepurasitiki, asi kuparara kwezvinhu kunofanira kudzivirirwa, kupisa kunofanira kunge kwakadzikama, uye kutonhora kunofanira kukwana, kunyanya kune dzakakobvu-madziro.

 

(6) Dzivirira zvinhu zvinotonhora kupinda muworkpiece, uye shandisa kuzvivharira zvitubu kana kuderedza tembiricha yenozzle kana zvichidikanwa.

 

(7) Zvishandiso zvakawandisa zvakashandiswa zvakare, mhando yemapurasitiki kana mavara haina kunaka, yakasanganiswa nemhute yemvura kana kumwe kusvibiswa, uye mhando yemafuta anoshandiswa yakashata.

 

(8) Simba rekusunga rinofanira kukwana.

 

9. Kuongororwa kwezvikonzero zvesirivha streaks mune jekiseni yakaumbwa zvigadzirwa

 

Silver streaks pane jekiseni rakaumbwa zvigadzirwa, zvinosanganisira pamusoro pemhepo mabhuru uye mukati pores.Chikonzero chikuru chekuremara ndiko kupindira kwemagasi (kunyanya mhute yemvura, gasi rekuora, gasi rekunyungudutsa, mweya).Zvikonzero chaizvo zvinoongororwa sezvinotevera:

 

1. Chimiro chemuchina:

 

(1) Kune kona yakafa mukuyerera kwezvinhu nekuda kwekupfeka kwebhari uye screw kana musoro werabha uye mhete yerabha, iyo inozoora nekupisa kwenguva yakareba.

 

(2) Iyo yekudziya system haichadzoreki, zvichiita kuti tembiricha iwedzere uye iparare.Tarisa uone kana paine matambudziko nekudziya zvinhu senge thermocouples uye kupisa makoiri.Zvisizvo screw dhizaini, zvichikonzera mhinduro kana nyore kuunza mweya.

 

2. Mold:

 

(1) Kusapedza simba.

 

(2) Kupokana kwekupokana kweanomhanya, gedhi uye mhango mu mold yakakura, zvichikonzera kupisa kwenzvimbo nekuora.

 

(3) Kusaenzana kugoverwa kwemagedhi nemakomba, uye kusinganzwisisi kutonhora hurongwa huchakonzera kupisa kusingaenzaniswi uye kupisa kwenzvimbo kana kuvhara nzira dzemhepo.

 

(4) Mugero wekutonhodza unopinza mvura mugomba.

 

3. Padivi repurasitiki:

 

(1) Humidity yepurasitiki yakakwirira, chikamu chezvigadzirwa zvekare chakawandisa kana kuti chine zvimedu zvinokuvadza (zvimedu zviri nyore kuparara), mapurasitiki anofanira kuomeswa zvakakwana uye zvimedu zvinofanira kubviswa.

 

(2) Kuti utore hunyoro kubva mumhepo kana kubva muruvara, ruvara runofanirawo kuomeswa, uye zviri nani kuisa chekuomesa pamushini.

 

(3) Kuwanda kwemafuta, stabilizers, nezvimwewo zvinowedzerwa mupurasitiki zvakanyanya kana kusanganiswa hakuna kuenzana, kana purasitiki pachayo ine zvinonyungudutsa zvinonyungudutsa.Kuparara kwemapurasitiki akavhenganiswa kunogonawo kuitika kana dhigirii yekupisa yakaoma kufunga.

 

(4) Purasitiki yakasvibiswa uye yakasanganiswa nemamwe mapurasitiki.

 

4. Kugadzirisa:

 

(1) Kana tembiricha, kudzvanywa, kumhanya, kumanikidzwa kwemashure, uye kunyunguduka kwemota kumhanya zvanyanya kukonzeresa kuora, kana kudzvanywa nekumhanya kwakadzikira, nguva yejekiseni, kudzvanywa kwekubata hakuna kukwana, uye kudzvanywa kwemashure kuri kuderera. yakanyanya kuderera, density ichawedzera nekuda kwekutadza kuwana yakanyanya kudzvanywa.Kusakwana kunyungudutsa gasi uye kuoneka sirivheri mitsetse, inofanira kuseta yakakodzera tembiricha, kudzvanywa, kumhanya uye nguva uye kushandisa akawanda-nhanho jekiseni kumhanya.

 

(2) Low back pressure uye kukurumidza kutenderera kutenderera kunoita kuti zvive nyore kuti mweya upinde mudhiramu uye kupinda muforoma nezvinhu zvakanyungudutswa.Kana kutenderera kwacho kwanyanya kureba, zvinhu zvakanyungudutswa zvinodziiswa kwenguva yakareba mudhiramu uye zvinoora.

 

(3) Kusakwana kwehuwandu hwezvinhu, hombe yekudyisa buffer, yakanyanya kuderera tembiricha kana yakaderera mold tembiricha inokanganisa kuyerera uye kuumbwa kwekumanikidza kwechinhu, uye kukurudzira kuumbwa kwemabhuru.

 

 

Saina kirasi yeruzhinji yeZhenye Injection Molding Exchange musi waGunyana 24

 

10. Kuongororwa kwezvikonzero zvinokonzera welded seams muzvigadzirwa zvepurasitiki

 

Kana ipurasitiki yakanyungudutswa ikasangana muchimiro chetambo dzakawanda mugomba nekuda kwekusangana nemakomba ekuisa, nzvimbo idzo nhanho yekuyerera inomiswa, uye nzvimbo uko kuyerera kwezvinhu zvekuzadza kunokanganiswa, mutsara weld seam inogadzirwa nekuti haigone kusanganiswa zvachose. .Uye zvakare, kana gedhi jekiseni rekugadzira rikaitika, weld seam inoumbwa zvakare, uye simba uye zvimwe zvinhu zve weld seam hazvina kunaka.Zvikonzero zvikuru ndezvizvi:

 

1. Kugadzirisa:

 

(1) Kudzvanywa kwejekiseni nekumhanya kwakadzikira, uye tembiricha yebhari uye tembiricha yekuumbwa yakadzikira, zvichikonzera kutonhora kusati kwasvika kwekunyunguduka kunopinda mu mold uye kutaridzika kweweld seams.

 

(2) Kana iyo jekiseni kumanikidza uye kumhanya zvakanyanyisa, jekiseni ichaitika uye weld seams ichaonekwa.

 

(3) Kumhanya kunofanirwa kuwedzerwa, uye kumanikidzwa kwemashure kunofanirwa kuwedzerwa kuderedza viscosity yepurasitiki uye kuwedzera density.

 

(4) Purasitiki yacho inofanira kuoma zvakanaka, uye zvinhu zvakashandiswa patsva zvinofanira kushandiswa zvishoma.Kana huwandu hwekuburitsa mumiriri hwakawandisa kana kuti mhando haina kunaka, weld seams ichaonekwa.

 

(5) Deredza simba rekumanikidza kufambisa kupera simba.

 

2. Mold:

 

(1) Kune magedhi akawandisa mugomba rimwe chete, uye magedhi anofanira kuderedzwa kana kuiswa akaenzana, kana kuiswa pedyo sezvinobvira kune weld seam.

 

(2) Exhaust pamusono we weld haina kunaka, uye exhaust system inofanirwa kumiswa.

 

(3) Iyo sprue yakakura kwazvo, saizi yegeti system haina kufanira, uye gedhi rinovhurwa kudzivirira kuyerera kwekunyunguduka kwakatenderedza gomba rekuisa, kana kushandisa diki diki sezvinobvira.

 

(4) Kana ukomba hwemadziro huchichinja zvakanyanya, kana ukobvu hwemadziro hwakanyanya kutetepa, ukobvu hwemadziro hwezvikamu hunofanira kunge hwakafanana.

 

(5) Kana zvichidikanwa, tsime rekubatanidza rinofanira kuvhurwa pamusono wefusion kuitira kuti fusion seam iparadzaniswe kubva kune workpiece.

 

3. Padivi repurasitiki:

 

(1) Mafuta uye zvinosimbisa zvinofanirwa kuwedzerwa zvakafanira kumapurasitiki asina kushambidzika kwemvura kana kupisa senitivity.

 

(2) Purasitiki ine tsvina yakawanda, uye kana zvichidikanwa, tsiva mapurasitiki nemhando yakanaka.

 

11. Ongororo yezvinokonzeresa vibration pateni yejekiseni yakaumbwa zvigadzirwa

 

Zvikamu zvepurasitiki zvakaomarara senge PS zvinoumba corrugations akakomba akatarisana negedhi kumusoro pedyo negedhi, dzimwe nguva inonzi vibration pateni.Chikonzero ndechekuti Kana iyo viscosity yakanyunguduka yanyanya kukura uye mold yakazadzwa muchimiro chekumira, izvo zviri kumberi kwekupedzisira zvinonyunguduka uye kuderera painongobata pamusoro pegomba, uye iyo inotevera inonyunguduka inowedzera iyo inotonhora inotonhora uye inoenderera. kuenda mberi.Kuyerera kwezvinhu kunoumba chimiro chekuvhundutsa kwepamusoro sezvainofambira mberi.

 

Solution:

 

(1) Kuwedzera tembiricha yebhari, kunyanya tembiricha yenozzle, tembiricha yekuumbwa inofanirawo kuwedzerwa.

 

(2) Wedzera kudzvanywa kwejekiseni uye nekukurumidza kukurumidza kuzadza iyo mold cavity.

 

(3) Kuvandudza saizi yemumhanyi uye gedhi kudzivirira kunyanyisa kuramba.

 

(4) Kubuditsa kwechiumbwa kunofanira kuva kwakanaka, uye chitubu chakakura chinotonhora chinotonhora chinofanira kuiswa.

 

(5) Zvikamu hazvifaniri kugadzirwa zvakanyanyotetepa.

 

12. Ongororo yezvinokonzeresa kuzvimba uye kutumbuka kwezvigadzirwa zvakaumbwa nemajekiseni

 

Zvimwe zvikamu zvepurasitiki zvinoratidza kuzvimba kana blisters kuseri kwesimbi inoiswa kana munzvimbo dzakakora nguva pfupi mushure mekuburitswa kwe mold.Izvi zvinokonzerwa nekuwedzera kwegesi yakabudiswa pasi pechiito chevhavha yemukati yepurasitiki iyo isati yanyatsotonhorera uye yakaoma.

 

mhinduro:

 

1. kutonhora kunoshanda.Deredza tembiricha yekuumbwa, kurebesa nguva yekuvhura mold, uye kuderedza kuomesa uye kugadzirisa tembiricha yechinhu.

 

2. Deredza kukurumidza kuzadza, kuderedza kutenderera kwekugadzira, uye kuderedza kuyerera kwekudzivirira.

 

3. Wedzerai kubata kumanikidza uye nguva.

 

4. Kuvandudza mamiriro ekuti madziro e workpiece akanyanya kukora kana kuwanda kunochinja zvakanyanya


Nguva yekutumira: Jul-30-2022