Ukubunjwa kwesitofu sePlastiki yinkqubo yokusebenzisa uxinzelelo oluphezulu ukutyhala iplastiki etyhidiweyo ibe ngumngundo. Injongo ephambili kukudala iimveliso eziluncedo xa zipholile kwaye ziqinisiwe kwimilo ebekwe kwi-mold.
An Isikrufu sokutofa isetyenziswa ngokubanzi kule nkqubo ngenxa yokuguquguquka kwayo ekudaleni iimilo ezahlukeneyo kunye nobukhulu ngexesha lomjikelo omnye, okunciphisa iindleko zizonke zeemveliso ezibunjiweyo.
I-screw idonsa iplastiki kwi-mold, kwaye ijometri yayo inquma inxalenye yejometri - echaphazela ngokuthe ngqo ixesha lomjikelo. Ixesha lomjikelo omde libiza imali eninzi kunelo lingagqithiyo kwixesha elithile. Injongo kukunciphisa iindleko zemveliso ngelixa ugcina umgangatho wemveliso kunye nemveliso ephezulu.
Uninzi lwabavelisi bacebisa ukusebenzisa izikrufu ezenziwe ngezinto ezifanayo njengemveliso yokugqibela, kodwa oku kunokunyusa iindleko kunye nexesha lokuthengisa.
Ezona zikrufu zilungileyo zokubumba inaliti yeplastiki zezo zingagqithiyo kumaxesha okujikela kunye nokunciphisa itorque efunekayo kulo lonke naliti. Kananjalo kufuneka zidalwe ngolondolozo oluncinci.
Kukho iintlobo ezininzi zezikrufu ezikhoyo kwimarike, kodwa ezinye zingcono kwizicelo ezithile kunezinye.
Kukwakho neentlobo ezahlukeneyo zeplastiki onokuzisebenzisa xa usenza isitofu. Enye yezona zinto zidumileyo zeplastiki ezisetyenziselwa ukubumba inaliti iplastiki yenayiloni ngenxa yokuqina kwayo kunye noluhlu olubanzi lokusetyenziswa. Ilungele ukuthwala kunye nokunxiba izicelo kwaye ithatha indawo ngokukhawuleza iintsimbi ezininzi kwishishini lemveliso.
Nalu uluhlu lwezona zikrufu zibalaseleyo zokutofa ngaphandle:
Ukubuyiselana Screw
Isikrufu esibuyiselanayo sesinye sezona zikrufu zixhaphakileyo zifumaneka ekubumbeni inaliti, kwaye zisetyenziselwa usetyenziso lwenjongo jikelele.
Esi sikrufu sibandakanya inxalenye yangaphandle enobubanzi obuhluka phakathi kwe-50% ngaphambi kokuqala kwentambo ukuya kwi-10% ekupheleni kwayo, ebonelela ngokunyibilika okufanelekileyo kunye nokuhamba kweplastiki. Olu hlobo lwesijiko luzicoca ngokwalo, ngoko lunokususa intsalela yezinto ezakhiweyo.
Izinto ke zihamba kwindawo yoxinzelelo oluphezulu, apho ixutywe nobushushu kwaye inyanzeliswe kwiijelo zombhobho wokujova. Enye into engalunganga kwesi sikrufu kukuba sifuna ukugcinwa okungaphezulu kunezinye iintlobo.
I-Cavity Screw
Esi sikrufu sinomsonto ophindwe kabini, obonelela ngeplasitiki yokuhamba kakuhle. Iphinde ibonise inxalenye yangaphandle kunye nobubanzi obuqhubekayo be-20% ukuya kwi-40%. I-screw ye-cavity ifuna ukugcinwa okuncinci kunezinye iintlobo, kwaye ifanelekile zombini i-cavity enye kunye ne-multi-cavity injection machines.
Izinto ke zihamba ngoxinzelelo phambi kokufikelela kwindawo yokutofa. Emva koko, kukulungele ukujova kwi-mold, apho ithatha ukuma kwemveliso eveliswayo.
Isikrufu somsonto omnye sinomzimba omde onobubanzi obungama-20% okanye ama-30%. Ithathwa njengesona sikrufu silungileyo sokubumba inaliti yeplastiki kuba ibonelela ngokuhamba okugqibeleleyo kwaye inika uxinzelelo olufanayo.
Screw seConveyor
Isikrufu sokuhambisa siyafana kakhulu nesikrufu esinomsonto omnye, kodwa sinemisonto emibini enxuseneyo edityaniswe ngumsonto ongaqhawukanga. Olu hlobo lwe-screw lunikeza imilinganiselo ephantsi yokucheba kwaye idityaniswe kakuhle kunye noomatshini abavelisa i-resin ephezulu yobushushu obunobunzima obuthile be-0.8 okanye ngaphezulu.
Olu hlobo lwesikrufu sokutofa lunomzimba othe tye onemingxuma ejikelezayo yonke ubude besikrufu. Olu hlobo lwesikrufu lunemisonto emibini nangaphezulu kwaye luhlala lusetyenziswa ngezikrufu zokudlulisa kunye nezinye iintlobo zezikrufu zokutofa ukunyusa ukuhamba kunye nokusabalalisa uxinzelelo.
Isikrufu esijikelezayo sibonisa intambo enye eqhubekayo engenazo iintambo ezingaqhawukanga, iigrooves, okanye i-accessory threads.
Ram Izikrufu
Izikrufu zenkunzi zegusha zivelisa uxinzelelo oluphezulu lwenaliti kunye namazinga okucheba, nto leyo ezenza zilungele izixhobo ezivelisa amacandelo ashinyeneyo kunye neeyunithi zokubambelela.
Olu hlobo lwe-screw lubonakaliswa ngumlinganiselo omkhulu wobude ukuya ku-diameter kwaye akukho misonto engaqhawukanga. Esi simbo sesikrufu silandela istrowuku yenkunzi yegusha kwaye sikholisa ukuphunyezwa ngezikrufu zokudlulisa okanye ezinye iintlobo zezikrufu zokutofa.
Izikrufu ezijikelezayo
Isikrufu esijikelezayo sinendlela yesixhobo esijikelezayo esiqhubekayo kwaye sisetyenziswa kwizicelo zokususa izinto. Olu hlobo lwe-screw lukwabonisa umlinganiselo omkhulu wobude ukuya kwi-diameter. Ngokuqhelekileyo iphunyezwa ngezikrufu zokudlulisa okanye ezinye iintlobo zezikrufu zesitofu kodwa zinokuqhotyoshelwa kwiyunithi yokuqhuba ezimeleyo ukuze isetyenziswe njengomatshini ozimeleyo.
isiphelo
Ke, zeziphi ezona zikrufu zilungileyo zokutofa zokubumba inaliti yeplastiki? Kuxhomekeke ngokwenene kwisicelo sakho esithile. Nangona kunjalo, izikrufu ezijikelezayo zinika ulawulo olwandisiweyo kunye noxinzelelo lwe-vacuum; Ngeli xesha, uyilo lwe-screw oluphindaphindayo luyilelwe ukugqithisa okuphezulu kunye noxinzelelo olusezantsi lwesitofu. Ngelixa kungekho nto ifana nesikrufu esigqibeleleyo sezicelo zokubumba inaliti yeplastiki, ukufumana enye ekufutshane ngokwaneleyo kunokuba ngumahluko phakathi kwamaxabiso akhawulezayo, anengeniso kunye nezantya zokuvelisa ezicothayo.
Ndiyabonga ngokufunda!
