dzimwe mhinduro nezve jekiseni molding muchina screw

Inoita sei jekiseni kuumba muchina screw isina kujairika ruzha slip kuita

Kana iyo screw ikatanga kutsvedza panguva ye preforming chikamu, Iyo axial kufamba kweiyo screw inomira sezvo iyo screw ichiramba ichitenderera. Kazhinji iyo screw slip ichatungamira yekushatirisa kwezvinhu zvisati zvaitika jekiseni, yakawedzera kugadzirisa kutenderera uye zvimwe zvinetso zvechigadzirwa.
Kufurira kwemaitiro parameters
Tembiricha yakaderera kumashure kwedhiramu kazhinji ndiyo inonyanya kukonzera kutsvedza kweiyo jekiseni repurasitiki screw. Iyo dhiramu yemuchina wekuumba jekiseni yakakamurwa kuita zvikamu zvitatu. Kumashure kwechikamu chekudyisa, mutete wakatsetseka wepolymer yakanyungudutswa inoumbwa panguva yekudziya uye kudzvanywa kwezvinhu. Iyo yakanyungudutswa yefirimu layer yakanamirwa kune barrel. Pasina iyi nhete yakatetepa, zvingava zvakaoma kufambisa pellets mberi. Izvo zvinhu zviri muchikamu chekudya zvinofanirwa kupiswa kusvika padanho rakakosha kuburitsa firimu rakakosha rakanyungudutswa. Zvisinei, kazhinji zvinhu zviri mubhodhoro rekuchengetedza nguva ipfupi kwazvo kuti igone kugonesa iyo polima kusvika kune tembiricha iyi. Mamiriro ezvinhu aya anogona kunge ari nekuda kwemidziyo idiki, iyo inowirirana configuration yediki barrel uye screw yakakonzerwa.
Yakanyanya Ipfupi nguva yekugara inogona kukonzera polymer kunyungudika kana kusakwana musanganiswa, izvo zvinozotungamira pakutsvedza kana kumira. Hedzino nzira mbiri dziri nyore dzekugadzirisa dambudziko iri. Chinhu chiduku chezvinyorwa chinowedzerwa kubva kumagumo ebhodhoro rekuchenesa uye kunyunguduka kwekushisa kunotariswa. Kana nguva yekugara ipfupi, tembiricha yekunyunguduka ichave yakaderera pane yakatarwa kukosha kweiyo tembiricha yebhari. Yechipiri nzira ndeyekutarisa chigadzirwa chakapedzwa uye kana chikawanikwa chine marble, dema-mavara kana chiedza-mitsetse, inoratidza kuti zvinhu hazvina kunyatsosanganiswa mudhiramu.
Impact yemidziyo

Kana iyo yakakonzera screw slippage yakakonzerwa nekugadzirisa michina pane kuita maparameter, ipapo kupfeka kwe screw uye barrel kungangove iro dambudziko rakakosha. Sezvakaita chikamu chekudyisa, apo resin inonyunguduka mune screw compression chikamu, inonamatira kumadziro ehumburumbira. Kana screw inotenderedzwa, zvinhu zvakacherwa kubva pamadziro ecylinder uye zvinotakurwa mberi. Kana paine nzvimbo dzekupfeka pane screw uye mbiya, ipapo screw haigone kufambisira mberi kuendesa kwezvinhu. Kana kupfeka kunofungidzirwa, iyo screw uye barrel inofanira kuongororwa uye kukwana kwakakodzera pakati pezviviri kunofanira kuongororwa. Kana sikuruu uye mbiya clearance pamwe kupfuura mwero ukoshi, inofanira kutanga kutsiva kana kugadzirisa basa. Kukundikana kwecheki mhete (cheki vharafu) zvinogonawo kuita kuti screw itsvedze. Kana iyo screw inotenderedzwa uye plasticized, mhete yekumashure inofanira kunge iri kumberi (open) chinzvimbo uye mukubata nekugadzirisa mhete chigaro. Kana Stop Ring iri kumashure (yakavharwa) state, kana pakati pekumberi nekumashure, iyo polima yakanyungudutswa ichave nekupikisa kupfuura nepamukaha pakati peStop Ring nechigaro chemhete.
Kana paine kupokana nezve Stop Ring, chinja ipapo ipapo. Iyo resin feed hopper inogona zvakare kuve chikonzero chekutsvedza mune akasiyana jekiseni ekuumba screws. Chaiyo hopper dhizaini ndiyo kiyi yekuona yakagadzikana kuendeswa kwezvinhu, asi izvi kazhinji zvinofuratirwa. Kazhinji, mapellets matsva eunifomu saizi anoshanda zvakanaka muskweya hopper ine kamwe kamwe compression zone (nekamwe kamwe kupera pasi) . Zvisinei, izvi hazvisizvo kana zvinhu zvakadzokororwa zvawedzerwa. Chimiro nekukura kwepellets zvakasiyana zvakanyanya mushure mekupwanywa zvakare, izvo zvichakanganisa kufanana kwechikafu. Incoherent feeding zvinoreva kuti screw haigone kuchengetedza yunifomu yekudyisa kumanikidza paMelt, zvichikonzera kusvetuka-svetuka. Kuti ugadzirise dambudziko iri uye kugadzirisa mutsauko wehukuru pakati pezvinhu zvakadzokororwa uye zvinhu zvitsva, tinogona kuedza kushandisa denderedzwa hopper ine flat compression zone (ine mupendero wakadzika pasi) .

1.Iyo nharaunda yeMold yakavhura hydraulic mhete idiki
Mold kuvhura simba = mold kuvhura mafuta kudzvanywa mhete nzvimbo × mold kuvhura mafuta kumanikidza
Kana iwe uchida kuwedzera iyo molity yekuvhura simba kana iyo yakanyanya kudzvanywa ichitsanangurwa, unogona chete kuwedzera mold kuvhura oiri pressure mhete nzvimbo, uye iwe unogona kuwedzera iyo mold kuvhura mafuta ekumanikidza yekumanikidza yeMhete nekuwedzera cylinder diamita kana kuderedza iyo piston tsvimbo diameter.

Zvinokonzeresa uye zviyero zveGlue kuvuza mukugadzira jekiseni rekugadzira muchina

Panguva yekugadzirwa kwejekiseni molding machine, zvigadzirwa zvinogadzirwa pasi pemamiriro ekudonha glue nekuda kwezvimwe zvikonzero, mhete yekudziya inoputirwa neMelt Glue, sezvo nguva yekugadzira ichiwedzerwa, mhete yekudziya yakakuvadzwa, njodzi yakavanzwa yehutano hwakaipa hwezvigadzirwa zvekugadzira, nezvimwewo. , kudonha kwakanyanya kweglue kwakaputira bhodhoro rese, izvo zvinoguma nemutengo mukuru uye kutambisa nguva yekuchengetedza
Mukugadzira, iyo NOZZLE (inonziwo nozzle head) inofanira kunge yakanyanyisa negedhi sleeve ye mold, uye mativi maviri anofanira kudyidzana, kana zvisina kudaro glue richabuda kunze. Kazhinji, radius yemabhora maviri inofanira kufanana, asi spherical aperture yemuromo ishoma pane 0.5 ~ 1mm yeruoko rwegedhi, iyo coaxiality kushivirira inofanira kuva shoma pane kana kuenzana 0.25 ~ 0.3. The following is an analysis of the causes of leakage of Glue
1.The mould has no locating ring or the locating ring does not match the forming machine. When the mould is installed, the mould inlet hole and the gun barrel nozzle are not on the coaxality, and the position has a little deviation. Every time the mould is produced, a little bit of glue leaks out, there is no obvious change, but with the increase of production time, leakage will be more and more tired, the last leakage will slowly wrap around the heating ring;
2.The fixing screw of the nozzle turret is loose, so that the barrel nozzle and the Mould Gate are not at the same concentricity. When the nozzle is pressed against the mould gate, there is a little deviation in the position. When the mould is produced, a little glue leaks out, the same parts of the product, there is no obvious change, but with the longer production time, leakage will be more and more tired, the last leakage will slowly wrap around the heating ring;
3, the mold gate sleeve has the breakage situation, when the production injection nozzle and the mold gate sleeve can not be very close to fit together, each time injection glue, there will be a little melt glue flow out of the mold outside, as the production time lengthens, the leakage glue will be more and more tired, finally leakage on the heating ring slowly wrapped;
4, the nozzle mouth has the breakage situation, when the production nozzle and the mold gate cover can not be very close together, each time the injection glue, there will be a little melt glue flow out of the mold outside, as the production time increases, the leakage glue will be more tired, finally leakage on the heating ring slowly wrapped;
5.The R angle of the mold gate cover and the injection nozzle does not match, there will be a gap between the injection nozzle and the mold gate cover when the production is close, every time the injection glue, there will be a little melt out of the mold, as the production time increases, leakage of rubber will be more and more tired in view of the above situation,

there are the following countermeasures:
1, it is recommended that the mold is equipped with positioning ring, although no positioning ring will save its cost, but no positioning ring, not only has the potential to produce leakage of rubber, when changing the mould, the time of changing the mould will be lengthened, the cost of the heating ring will be saved if the heating ring is damaged by one time leakage of the glue, hand gun barrel shooting table forward, touch the mold, feel the nozzle and mold gate sleeve is in the same concentricity, also can use thin paper pad in mold glue mouth, the nozzle touch mold, and then exit, see whether the paper hole and the nozzle hole consistency;
2. Check the cause of loosening and fastening of the tightening screws of the Turret; the corresponding confirmation method: Before production, hold the turret shooting table by hand, when touching the mould, whether the handle shooting nozzle and the mould gate sleeve are on the same concentricity, also can use thin paper pad in the mold glue mouth, shoot the mouth after touching the mold, and then exit, see whether the paper hole and shoot mouth hole consistency;
3.Temporary solution due to mold gate cover and nozzle damage: use soft metal such as copper pad on the mold gate cover, nozzle forward contact with the copper plate top tight, back, after the nozzle hole in the nozzle position, permanent Countermeasures: The Corresponding Gate Sleeve or nozzle is re-polished, so that the R angle of both the gate sleeve and the nozzle on the Turret are in smooth contact with the production;
4.Glue leakage caused by mismatch of R angle of gate sleeve or nozzle, replace Gate Sleeve or Nozzle to keep the R angle of gate sleeve and nozzle consistent;

Nekuti iyo IC tray ine huremu huremu, the causes and improvement methods of glue leakage in injection molding production mainly have the above several kinds, there is no good method of automatic detection of glue leakage in the production process, and the management can only increase the time period to inspect if there is glue leakage, with the continuous development of injection technology, will be developed in the future to automatically detect leakage of equipment, so that the production of INJECTION MOLDING MORE INTELLIGENT!