Kuenderana, kuyerwa kwetembiricha kwakakosha muindasitiri yepurasitiki kuti ive nechokwadi chekupedzwa kwezvigadzirwa zve thermoformed.Mune ese ari maviri akamira uye anotenderera thermoforming maapplication, yakaderera kuumba tembiricha inoburitsa kushushikana muchikamu chakaumbwa, nepo tembiricha yakakwira zvakanyanya inogona kukonzera matambudziko akadai sekuputika uye kurasikirwa kweruvara kana kupenya.
Muchinyorwa chino, tichakurukura kuti kufambira mberi mu infrared (IR) kusingabatanidzi tembiricha kuyerwa kwete kungobatsira thermoforming mashandiro kukwidziridza maitiro avo ekugadzira uye mhedzisiro yebhizinesi, asi zvakare inogonesa kutevedzera indasitiri zviyero zvemhando yekupedzisira uye kuvimbika.
Thermoforming ndiyo nzira iyo iyo thermoplastic sheet inogadzirwa kuti ive yakapfava uye inochinjika nekudziisa, uye bi-axially deformed nekumanikidzwa kuita matatu-dimensional shape.Iyi nzira inogona kuitika kana paine kana pasina mold.Kupisa iyo thermoplastic sheet ndeimwe yematanho akakosha mukushanda kwe thermoforming.Michina yekugadzira inowanzo shandisa sandwich-type heaters, iyo ine mapaneru e infrared heaters kumusoro uye pasi pemashizha.
Iyo yepakati tembiricha yeiyo thermoplastic sheet, ukobvu hwayo uye tembiricha yenzvimbo yekugadzira zvese zvinokanganisa mafambisirwo epurasitiki epolymer cheni ichipinda munzvimbo inoumbwa uye inogadzirisa kuita semi-crystalline polymer chimiro.Iyo yekupedzisira yakaomeswa mamorekuru chimiro inosarudza iwo emuviri maitiro echinhu, pamwe nekuita kwechigadzirwa chekupedzisira.
Sezvineiwo, iyo thermoplastic sheet inofanirwa kupisa zvakafanana kune yakakodzera tembiricha yekuumba.Pepa racho rinobva rachinjirwa kune chiteshi chekuumba, uko mudziyo unoritsikirira kuforoma kuti riumbe chikamu, uchishandisa kana vacuum kana mweya wakamanikidzwa, dzimwe nguva nerubatsiro rwemakinika plug.Pakupedzisira, chikamu chinobuda kubva muforoma kuitira danho rekutonhora rekuita.
Iyo yakawanda yekugadzirwa kwe thermoforming ndeye ma roll-fed machines, ukuwo masheet-fed machines ndeye madiki mavhoriyamu ekushandisa.Nekushanda kukuru kwevhoriyamu, yakanyatsobatanidzwa, mu-mutsara, yakavharwa-loop thermoforming system inogona kururamiswa.Mutsetse unogashira mbishi zvinhu zvepurasitiki uye extruders inodyisa zvakananga mumushini we thermoforming.
Mamwe marudzi ezvishandiso zvethermoforming anogonesa kudzvanywa kwechinyorwa chakaumbwa mukati memuchina wethermoforming.Kunyanya kurongeka kwekucheka kunogoneka uchishandisa nzira iyi nekuti chigadzirwa uye skeletal scrap hazvidi repositioning.Dzimwe nzira ndiko uko pepa rakaumbwa rinonongedza zvakananga kuchiteshi chekurima.
Yakakwira vhoriyamu yekugadzira kazhinji inoda kubatanidzwa kwezvikamu stacker nemuchina we thermoforming.Kana zvaturikidzwa, zvinyorwa zvapera zvinorongedza mumabhokisi kuti zvitakurwe kuenda kune yekupedzisira-mutengi.Maskeletal scrap akapatsanurwa anoroverwa pamandrill kunozochekwa kana kupfuura nemuchina wekuchekeresa uri mumutsetse nemuchina wekupisa.
Large sheet thermoforming ibasa rakaoma rinosangana nekuvhiringidzwa, izvo zvinogona kuwedzera zvakanyanya nhamba yezvikamu zvakarambwa.Mazuva ano zvakaomesesa zvinodikanwa zvechikamu chemhando yepamusoro, ukobvu kurongeka, kutenderera nguva uye goho, zvakasanganiswa nediki rekugadzirisa hwindo remapolymer matsva ekugadzira uye mashizha akawanda, zvakakurudzira vagadziri kutsvaga nzira dzekuvandudza kudzora kwemaitiro aya.
Munguva ye thermoforming, kupisa kwepepa kunoitika kuburikidza nemwaranzi, convection, uye conduction.Aya maitiro anounza kusava nechokwadi kwakawanda, pamwe nekusiyana-siyana-nguva uye zvisizvo muhutano hwekupisa kupisa.Uyezve, kupisa mapepa inzira yakagovaniswa nzvimbo inotsanangurwa zvakanyanya nechikamu mutsauko equation.
Thermoforming inoda chaiyo, yakawanda-zone tembiricha mepu isati yagadzirwa yezvikamu zvakaoma.Dambudziko iri rinowedzerwa nenyaya yekuti tembiricha inowanzodzorwa pazvinhu zvekudziya, nepo kugovera tembiricha mukati mehukobvu hweshizha ndiyo nzira huru yekusiyanisa.
Semuenzaniso, amorphous material senge polystyrene inowanzo chengetedza kuvimbika kwayo kana ichipisa kune tembiricha yekuumba kwayo nekuda kwekunyanya kunyungudika simba.Somugumisiro, zviri nyore kubata uye kuumba.Kana chinhu checrystalline chichipisa, chinoshanduka zvakanyanya kubva pakasimba kuenda kumvura kana tembiricha yekunyungudika yasvika, zvichiita kuti firiji yekuumba tembiricha iite diki.
Shanduko mune tembiricha ambient zvakare inokonzeresa matambudziko mu thermoforming.Nzira yekuedza uye yekukanganisa yekutsvaga roll feed yekukurumidza kugadzira inogamuchirika moldings inogona kuratidza kuti haina kukwana kana tembiricha yefekitori yaizochinja (kureva, mumwedzi yezhizha).Shanduko yetembiricha ye10°C inogona kuva nesimba guru pane zvinobuda nekuda kwetembiricha yakatetepa zvikuru.
Sechinyakare, thermoformers vakavimba nehunyanzvi hunyanzvi hwekunyora tembiricha yeshizha.Zvisinei, nzira iyi inowanzopa zvibereko zvishoma pane zvinodiwa maererano nekugadzirwa kwechigadzirwa uye kunaka.Vashandi vane basa rakaoma rekuenzanisa, iro rinosanganisira kuderedza mutsauko uripo pakati pepakati peshizha uye tembiricha yepasi, ukuwo vachiona kuti nzvimbo dzese dziri mbiri dzinogara mukati mehudiki uye tembiricha yekuumba yakanyanya.
Pamusoro pezvo, kuonana zvakananga nepepa repurasitiki hazvigoneke mu thermoforming nekuti inogona kukonzera maronda pamapurasitiki uye nguva dzisingagamuchirwe dzekupindura.
Kuwedzera, iyo indasitiri yepurasitiki iri kuwana mabhenefiti easina-kubata infrared tekinoroji yekuyera tembiricha kuyerwa uye kutonga.Infrared-based sensing mhinduro dzinobatsira pakuyera tembiricha pasi pemamiriro ezvinhu umo thermocouples kana imwe probe-mhando sensors haigone kushandiswa, kana kusaburitsa data chaiyo.
Isiri-inobata IR thermometers inogona kushandiswa kutarisa tembiricha yekukurumidza kufamba maitiro nekukurumidza uye nemazvo, kuyera chigadzirwa tembiricha zvakananga panzvimbo yeovheni kana yakaoma.Vashandisi vanogona ipapo kugadzirisa zviri nyore maparameters kuti vave nechokwadi chemhando yechigadzirwa.
Nezve thermoforming maapplication, otomatiki infrared tembiricha yekutarisa system inowanzo sanganisira opareta interface uye chiratidziro chezviyero zvemaitiro kubva muhovhoni ye thermoforming.Iyo IR thermometer inoyera tembiricha yekupisa, inofamba epurasitiki mapepa ane 1% chokwadi.Idhijitari pani mita ine yakavakirwa-mukati mechanicha relay inoratidza tembiricha data uye inoburitsa maaramu masaini kana iyo set point tembiricha yasvika.
Uchishandisa iyo infrared system software, thermoformers inogona kuseta tembiricha uye kuburitsa mazinga, pamwe nekumissivity uye alarm mapoinzi, uye wozotarisa kuverengwa kwetembiricha panguva chaiyo-nguva.Kana maitiro acho achirova tembiricha yakatarwa, relay inovhara uye inogona kukonzeresa mwenje wechiratidzo kana alarm inonzwika kudzora kutenderera.Maitiro ekushisa data anogona kuchengetwa kana kutumirwa kune mamwe maapplication ekuongorora uye kugadzirisa zvinyorwa.
Kutenda kune data kubva kune zviyero zveIR, vanogadzira mitsara yekugadzira vanogona kuona iyo yakakwana yekuseta ovheni yekuzadza pepa zvachose munguva pfupi pfupi pasina kupisa chikamu chepakati.Mhedzisiro yekuwedzera chaiyo tembiricha data kune inoshanda ruzivo inogonesa drape molding ine mashoma anoramba.Uye, mapurojekiti akaomarara ane zvinhu zvakakora kana zvitete ane yunifomu yekupedzisira yemadziro ukobvu kana plastiki ichidziiswa zvakafanana.
Thermoforming masisitimu ane IR sensor tekinoroji inogona zvakare kukwidziridza thermoplastic de-moulding maitiro.Mumaitiro aya, vanoshanda dzimwe nguva vanomhanyisa ovheni dzavo zvakanyanya, kana kusiya zvikamu muforoma zvakanyanyisa.Nekushandisa sisitimu ine infrared sensor, vanogona kuchengetedza kutonhora kunoenderana kutonhora mukati me molds, kuwedzera kugadzirwa kwekugadzira uye kubvumira zvikamu kuti zvibviswe pasina kurasikirwa kukuru nekuda kwekunamira kana deformation.
Kunyangwe iyo isiri-inobata infrared tembiricha kuyerwa kunopa akawanda akaratidzwa mabhenefiti kune vanogadzira mapurasitiki, vatengesi vezviridzwa vanoramba vachigadzira mhinduro nyowani, vachiwedzera kuvandudza huchokwadi, kuvimbika uye nyore-kwekushandisa-kwe-IR masisitimu munzvimbo dzinoda kugadzirwa.
Kugadzirisa matambudziko ekuona neIR thermometers, makambani ezviridzwa akagadzira mapuratifomu e sensor anopa akabatanidzwa kuburikidza ne-the-lens chinangwa chekuona, pamwe ne laser kana vhidhiyo kuona.Iyi nzira yakabatanidzwa inovimbisa kwakaringana chinangwa uye nzvimbo yakananga pasi pemamiriro akanyanya kuipa.
Thermometers inogonawo kubatanidza panguva imwe chete chaiyo-nguva yekutarisa vhidhiyo uye otomatiki mufananidzo kurekodha uye kuchengetedza - nekudaro kuendesa yakakosha ruzivo rwemaitiro matsva.Vashandisi vanogona kukurumidza uye nyore kutora snapshots yemaitiro uye vanosanganisira tembiricha uye nguva / zuva ruzivo muzvinyorwa zvavo.
Mazuva ano compact IR thermometers inopa zvakapetwa kaviri kutaridzika kweyekutanga, bulky sensor modhi, kuwedzera mashandiro avo mukukumbira maitiro ekudzora manyorerwo uye kubvumira yakananga kutsiva yekuonana probes.
Mamwe matsva eIR sensor dhizaini anoshandisa diki inonzwa musoro uye yakaparadzana yemagetsi.Masensor anogona kusvika pa22:1 optical resolution uye anomira ambient tembiricha inosvika 200°C pasina kutonhora.Izvi zvinobvumira kuyerwa kwakaringana kwemasaizi madiki madiki munzvimbo dzakamanikana uye nemamiriro ezvinhu akaoma.Masensa idiki zvekukwanisa kuisirwa chero kupi, uye anogona kugariswa mustainless simbi yakavharirwa kuti adzivirirwe kubva kune yakaoma maindasitiri maitiro.Innovations muIR sensor zvemagetsi zvakavandudzawo hunyanzvi hwekugadzirisa zviratidzo, kusanganisira kubuda, sampuli uye kubata, peak hold, balley hold uye avhareji mabasa.Nemamwe masisitimu, aya machinjiro anogona kugadziridzwa kubva kure mushandisi interface kuitira kuwedzera nyore.
Vashandisi vekupedzisira vanogona ikozvino kusarudza IR thermometers ine mota, inodzorwa-inodzorwa inosiyana inotarisisa inotarisisa.Uku kugona kunobvumira kukurumidza uye kwakaringana kugadzirisa kwekutarisa kwezviyero zvinotarirwa, kungave nemaoko kumashure kwechiridzwa kana kure kuburikidza neRS-232/RS-485 PC yekubatanidza.
IR sensors ine kure inodzorwa inodzorwa dhairekitori inotarisisa inogona kugadzirwa zvinoenderana nechero chikumbiro chinodiwa, ichideredza mukana wekuiswa zvisirizvo.Mainjiniya anogona kukwenenzvera kuyerwa kwe sensor kutarisisa kubva pakuchengetedza hofisi yavo, uye kuramba vachiona uye kurekodha kusiyana kwekushisa mukuita kwavo kuitira kuti vatore danho rekugadzirisa nekukurumidza.
Vatengesi vari kuwedzera kuvandudza kuchinjika kweyero ye infrared tembiricha nekupa masisitimu ane munda calibration software, zvichibvumira vashandisi kugadzirisa masensa pasaiti.Uyezve, matsva IR masisitimu anopa nzira dzakasiyana dzekubatanidza kwemuviri, kusanganisira kukurumidza kuburitsa zvibatanidza uye terminal yekubatanidza;mawavelengths akasiyana-siyana ekuyera kwepamusoro-uye kuderera-kupisa;uye sarudzo ye milliamp, millivolt uye thermocouple zviratidzo.
Vagadziri veInstrumentation vakapindura kune emissivity nyaya dzine chekuita neIR sensors nekugadzira mapfupi marefu mayunitsi ayo anoderedza kukanganisa nekuda kwekusavimbika kwekuburitsa.Midziyo iyi haina hanya nekuchinja kwekuburitsa pane izvo zvinotarisirwa seyakajairwa, yakakwirira tembiricha sensors.Saka nekudaro, vanopa kuverenga kwakaringana pazvinangwa zvakasiyana patembiricha dzakasiyana.
IR tembiricha yekuyera masisitimu ane otomatiki emissivity kugadzirisa modhi inogonesa vagadziri kuseta-yakafanotsanangurwa mabikirwo kuti agamuchire kazhinji kuchinja kwechigadzirwa.Nokukurumidza kuziva kusakanganiswa kwemafuta mukati meyero yekuyera, vanobvumira mushandisi kuvandudza chigadzirwa chemhando uye kufanana, kuderedza zvimedu, nekuvandudza kushanda zvakanaka.Kana kukanganisa kana kukanganisa kukaitika, sisitimu inogona kuburitsa alarm kuti ibvumire kugadzirisa.
Yakavandudzwa infrared sensing tekinoroji inogona zvakare kubatsira kukwenenzvera magadzirirwo ekugadzira.Vashandisi vanogona kutora chikamu chechikamu kubva pane iripo tembiricha setpoint rondedzero uye otomatiki yega yega yepamusoro tembiricha kukosha.Iyi mhinduro inobvisa kurongedza uye inowedzera nguva yekutenderera.Iyo zvakare inogadzirisa kutonga kwekudziya nzvimbo uye inowedzera kugadzirwa.
Kuti ma thermoformers aongorore zvizere kudzoka kwekudyara kweautomated infrared tembiricha yekuyera system, vanofanirwa kutarisa zvimwe zvakakosha.Kuderedza mutengo wepasi kunoreva kufunga nezvenguva, simba, uye huwandu hwekudzikisa zvimedu zvinogona kuitika, pamwe nekukwanisa kuunganidza uye kurondedzera ruzivo pane imwe neimwe pepa inopfuura nepakati thermoforming process.Mabhenefiti ese eiyo otomatiki IR sensing system anosanganisira:
• Kugona kuchengetedza uye kupa vatengi mufananidzo unopisa wechikamu chega chega chakagadzirwa kune zvinyorwa zvemhando yepamusoro uye kutevedzera ISO.
Isiri-inobata infrared tembiricha kuyerwa haisi tekinoroji nyowani, asi mitsva yemazuva ano yakadzikisa mitengo, yakawedzera kuvimbika, uye yakagonesa mayuniti madiki ekuyera.Thermoformers inoshandisa IR tekinoroji inobatsirwa nekuvandudzwa kwekugadzirwa uye kuderedzwa kwezvakaraswa.Hunhu hwezvikamu zvakare hunovandudza nekuti vagadziri vanowana yakawedzera yunifomu ukobvu inobuda mumichina yavo ye thermoforming.
For more information contact R&C Instrumentation, +27 11 608 1551, info@randci.co.za, www.randci.co.za
Nguva yekutumira: Aug-19-2019