Overmold yog dab tsi?

Kuv tau nkag mus rau hauv overmolding txog kaum ob xyoos dhau los thaum ib tus neeg siv khoom poob ib lub taub hau ntsia hlau rau ntawm kuv lub rooj. Lub TPE tuav tau tev tawm zoo li daim tawv nqaij tuag. "Kho qhov no," nws hais. Qhov ntawd yog kuv qhov kev taw qhia txog tus txheej txheem.

Overmolding muab ib lub yas rau lwm tus. Feem ntau soft tshaj nyuaj. Ib txheej TPE lossis TPU mus ncig ntawm ABS lossis nylon core. Kev tuav ntawm koj lub laum cordless, qhov muag ntawm koj tus txhuam hniav kov, lub bumper ntawm koj lub xov tooj. Tag nrho cov overmolded.

Lub tswvyim suab yooj yim. Qhov kev txiav txim tsis yog.

Qhov teeb meem Bond

Nov yog qhov tsis muaj leej twg qhia koj ua ntej. Ob qho khoom siv yuav tsum nyiam ib leeg. Tshuaj. Yog tias qhov polarity tsis sib xws, koj tau txais yam uas cov neeg siv khoom poob rau ntawm kuv lub rooj. Cov khoom uas zoo li zoo los ntawm cov xovxwm, tom qab ntawd poob sib nrug peb lub lis piam tom qab thaum ib tus neeg siv lawv tiag tiag.

PP ua haujlwm nrog SEBS. Lawv muaj cov qauv molecular zoo sib xws. ABS thiab PC xav tau TPU lossis tshwj xeeb tsim TPE. Nylon yog npau suav phem. Kuv tau saib cov engineers siv ntau lub hlis sim kom TPE los lo rau iav - puv nylon 66. Cov cua sov stabilizers hauv nylon tua cov ntawv cog lus. Koj xav tias koj tau hu rau hauv, nkoj tsib caug txhiab qhov chaw, tau txais kev hu ob lub hlis tom qab uas cov grips tau swb.

Peb muaj cov cuab yeej siv fais fab mus rau sab vim ib tug neeg hloov cov khoom siv nylon yam tsis tau qhia rau leej twg. Tib spec ntawm ntawv. Txawv additive pob. Cov khoom tshiab tau muaj kev hloov pauv ntau dua. Bond zog poob plaub caug feem pua.

Cov ntaub ntawv cov ntaub ntawv tsis qhia koj qhov no. Tib txoj hauv kev kom paub yog khiav qhov sib xyaw ua ke thiab sim nws.

Ob Txoj Kev Ua Nws

Feem ntau lub khw khiav overmolding ib ntawm ob txoj kev.

Xaiv-thiab- qhov chaw yog qhov kev xaiv pheej yig. Koj mold lub substrate nyob rau hauv ib tug xovxwm, rub qhov chaw, muab tso rau hauv lub thawv, taug kev mus rau lwm lub xovxwm, thauj lawv mus rau hauv ib tug thib ob cuab tam, tua lub overmold. Cov cuab yeej yooj yim. Txheem presses. Tab sis koj xav tau tus neeg teb xov tooj thauj khoom txhua hnub. Thiab lub substrate yog txias thaum koj tua cov khoom thib ob. Qhov ntawd ua rau mob siab rau daim ntawv cog lus.

Peb muaj ib qho kev pab kho mob uas khiav xaiv-thiab- qhov chaw. Ua haujlwm zoo thaum lub caij ntuj sov. Lub caij ntuj no tuaj, khw hauv pem teb poob rau 60 degrees, qhov chaw pib ua tsis tiav tev. Lub substrate txias tsis tau muab TPE molecules dab tsi los lob mus rau. Yuav tsum tau ntxiv qhov chaw nres tsheb preheat. Ib kauj ruam ntxiv, ib qho ntxiv mus yuam kev.

Ob- txhaj koob tshuaj tivthaiv yog siv lub rotary platen lossis lub tshuab hloov pauv kom txav lub substrate ntawm kab noj hniav A mus rau kab noj hniav B thaum nws tseem sov. Ib lub tshuab, ib lub voj voog, zoo dua daim ntawv cog lus. Tab sis cov cuab yeej raug nqi peb zaug ntau dua thiab koj xav tau cov cuab yeej tshwj xeeb. Peb muaj 400-tuj Engel nrog lub rotating platen. Lub tshuab ntawd zaum tau yim lub hlis ua ntej peb pom qhov ntim txaus los ua kom pom tseeb khiav nws.

Qhov crossover point nyob ntawm koj tus nqi zog thiab koj qhov ntim txhua xyoo. Kuv tau pom cov kev pab cuam tig los ntawm xaiv-thiab- qhov chaw rau ob- tua thiab rov qab dua thaum tus neeg siv khoom hloov kho lawv cov kev kwv yees.

Thaum Grip Peels

TPE tev-tawm yog hom tsis ua haujlwm feem ntau. Cov khoom mos cia mus ntawm lub substrate. Qee zaum nws maj mam tshwm sim ntawm cov npoo. Qee zaum tag nrho tuav swb tawm hauv ib thooj.

Ua rau:

Moisture nyob rau hauv lub substrate. Nylon yog hygroscopic. Nws rub dej tawm ntawm huab cua. Yog tias koj tsis qhuav nws ua ntej molding, chav ua haujlwm ntawm lub interface thaum txhaj thib ob. Qhov cub ntawd tiv thaiv kev sib txuas ntawm molecular. Kuv tau pom tag nrho cov kev khiav tawm vim tias ib tug neeg tawm ntawm Gaylord ntawm nylon qhib rau hnub so.

Kev kis kab mob. Ib qho roj, plua plav, lossis pwm tso tawm qhov seem ntawm lub substrate nto tua cov ntawv cog lus. Peb muaj cov cuab yeej thev naus laus zis uas nyiam ntaus cov cores nrog cov tshuaj tsuag silicone. Ua kom cov khoom tawm tau yooj yim dua. Kuj tseem ua rau overmold tev tawm. Siv peb ob lub lis piam los xyuas seb qhov twg tau tshwm sim.

Qhov kub tsis raug. TPE muaj lub qhov rais zoo rau kev sib txuas. txias heev thiab nws tsis ntws mus rau hauv lub substrate nto. Kub dhau thiab koj pib degrading cov khoom. Txhua cov khoom sib xyaw ua ke muaj qhov sib txawv qab zib. Daim ntawv teev cov ntaub ntawv muab qhov pib taw tes rau koj. Koj hu nws los ntawm qhov ntawd.

Cov ntaub ntawv tsis sib xws. Saib saum toj no. Qhov no feem ntau yog ib qho teeb meem tsim uas tshwm sim lig.

Kev Xeem

Peb rub cov khoom tawm ntawm kab thiab sim lawv. ASTM D6862 Kev Ntsuam Xyuas Koj clamp lub substrate, tuav lub TPE nrog ib tug fixture, rub ntawm 90 degrees, ntsuas lub quab yuam kom cais lawv.

Tshaj 15 phaus ib nti yog qhov zoo. Hauv qab 10 yog qhov teeb meem. Nyob nruab nrab ntawm 10 thiab 15 yog qhov uas koj sib cav nrog koj cov neeg siv khoom txog seb qhov spec puas muaj tiag.

Muaj ob hom kev ua tsis tiav. Adhesive tsis ua haujlwm txhais tau tias TPE rub tawm ntawm lub substrate kom huv si. Daim ntawv cog lus cia mus. Cohesive tsis ua hauj lwm txhais tau tias TPE kua muag ua ntej nws sib cais. Daim ntawv cog lus tuav tab sis cov khoom tsis tau. Cohesive tsis ua hauj lwm yog qhov koj xav tau. Nws txhais tau hais tias qhov sib koom ua ke muaj zog dua li cov khoom siv nws tus kheej.

Kuv tau muaj cov neeg siv khoom hais txog 20 lbf / hauv thaum TPE nws tus kheej tsuas yog ntsuas ntawm 18. Koj tsis tuaj yeem sib cog lus muaj zog dua li cov khoom siv. Physics tsis quav ntsej txog cov ntawv sau spec.

Tool Design Details

Cov cuab yeej yuav tsum tau muab khi rau ntawm lub substrate kom tsis txhob flash. Overmold flash tshwj xeeb yog kev ntxhov siab vim tias TPE yog rubbery thiab nyuaj rau luas kom huv si. Lub foob nto ntawm lub cuab yeej hnav lub sijhawm. Dab tsi khiav huv ntawm 10,000 txhaj tshuaj yuav flash ntawm 100,000.

Rooj vag qhov chaw tseem ceeb. TPE yuav tsum ntws hla lub substrate nto yam tsis muaj cua nkag. Cua ntxiab txhais tau tias voids ntawm lub interface. Voids txhais tau tias tsis muaj zog. Peb muaj ib feem nrog lub tiaj tiaj overmold cheeb tsam. Lub rooj vag nyob ntawm ib kawg. Cov khoom ntws hla thiab thawb cua mus rau lub ces kaum deb. Tsis muaj qhov cua nyob ntawd. Bond ua tsis tiav ntawm lub ces kaum ntawm txhua qhov chaw. Ntxiv ib tug vent pin, teeb meem daws.

Cov pwm kub cuam tshuam rau lub sijhawm voj voog thiab lub zog ntawm kev sib koom ua ke. Cov pwm kub muab kev sib txuas zoo dua tab sis txias dua. Koj pom qhov sib npaug uas ua tau raws li koj qhov zoo spec yam tsis tau tua koj tus nqi.

Kev ntxhib los mos ntawm lub substrate pab. Lub polished nto muab TPE tsawg dua rau lob. Lub teeb kev ntxhib los mos, tej zaum SPI C-2 los yog C-3, muab cov neeg kho tshuab cuam tshuam rau sab saum toj ntawm daim ntawv cog lus tshuaj. Peb khiav textured substrate nto raws li tus qauv xyaum tam sim no.

Tus lej tiag

Tus nqi cuab yeej rau ib qho yooj yim xaiv-thiab- qhov chaw teeb tsa tej zaum yuav yog $15,000 txog $25,000 ib kab noj hniav rau cov cuab yeej substrate, zoo ib yam li cov cuab yeej overmold. Ob- kev tua cov cuab yeej rau tib seem yuav raug $80,000 txog $120,000 nyob ntawm qhov nyuaj.

Lub sij hawm voj voog rau xaiv-thiab- qhov chaw yog qhov twg ob lub cuab yeej khiav ntxiv rau lub sijhawm hloov mus. Daim duab 30 vib nas this rau lub substrate, 25 rau lub overmold, 10 vib nas this rau tus neeg teb xov tooj thauj khoom thiab unload. Hu rau nws 65 vib nas this hauv pem teb mus rau pem teb yog tias txhua yam mus zoo.

Ob - txhaj tshuaj tshem tawm qhov hloov pauv tab sis lub cuab yeej siv ob qho tib si txhaj tshuaj ua ke. Koj xaus li ntawm 35 mus rau 45 vib nas this feem ntau. Ntau qhov chaw hauv ib teev tab sis tus nqi peev ntau dua.

Tus nqi ntawm cov khoom sib txawv wildly. Khoom muag PP khiav ib duas las ib phaus. Tshwj xeeb TPE formulated rau nylon bonding yuav ntaus rau rau los yog yim duas las. Cov txheej txheej overmold feem ntau yog nyias yog li nws tsis yog tus nqi ib feem, tab sis nws ntxiv rau cov kev pabcuam siab.

Qhov twg peb siv Nws

Cov cuab yeej fais fab yog daim ntawv thov ntim loj tshaj plaws uas kuv pom. Txhua qhov kev xyaum, cuam tshuam tus tsav tsheb, thiab pom kov muaj TPE overmolded grips. Cov khoom muag muag absorbs kev co, txhim kho tuav thaum koj ob txhais tes hws los yog oily, thiab tsuas yog zoo dua li cov yas liab qab.

Cov khoom siv kho mob siv overmolding rau ergonomics thiab sealing. Cov cuab yeej phais yuav tsum tsis yog - plam tuav. Cov cuab yeej tuav cov kua dej xav tau gaskets thiab cov ntsaws ruaj ruaj molded nyob rau hauv qhov chaw. Lub overmold tsim ib qho chaw uas tuaj yeem ua kom tsis muaj menyuam tsis muaj kab mob hauv cov pob qij txha sib dhos.

Automotive interiors yog loj. Steering log inserts, hloov cov pob qhov rooj, qhov rooj kov, cov nyees khawm thiab cov keyboards. Txhua yam tus neeg tsav tsheb kov tau mos-kov overmolding hnub no.

Cov neeg siv khoom siv hluav taws xob siv nws rau rooj plaub thiab npog. Koj cov ntaub ntawv xov tooj nrog lub pob muag muag nyob ib ncig ntawm ntug yog overmolded. Cov ntaub mos muag hauv qab ntawm koj lub laptop yog overmolded.

Dab tsi mus yuam kev

Dhau li ntawm daim ntawv cog lus tsis ua haujlwm, muaj lwm txoj hauv kev los cuam tshuam qhov no.

Flash ntawm txoj kab sib cais lossis ib puag ncig kaw -tawm nta. Lub TPE nyem tawm qhov twg lub cuab yeej tsis kaw zoo kawg nkaus. Koj tuaj yeem luas nws tab sis qhov ntawd ntxiv kev ua haujlwm thiab lub cim trim yeej tsis zoo li huv si raws li qhov zoo molded ntug.

Kev txhaj tshuaj luv luv uas TPE tsis sau tag nrho. Feem ntau yog ib qho teeb meem ntawm qhov rooj lossis qhov cua. Los yog koj tab tom sim thawb cov khoom kom deb dhau ntawm cov ntu nyias.

Warping ntawm lub substrate thaum txhaj thib ob. TPE tuaj kub. Yog tias phab ntsa substrate nyias, nws tuaj yeem cuam tshuam. Tom qab ntawd nws tsis haum rau hauv kev sib dhos.

Sink marks qhov twg TPE seem yog tuab heev. Qhov teeb meem tib yam li ib zaug - txhaj tshuaj molding. Khaws cov phab ntsa thickness uniform.

Delamination dhau sijhawm. Qhov no txawv ntawm daim ntawv cog lus tam sim ntawd. Cov khoom xeem dhau kev xeem, mus rau hauv kev pabcuam, tom qab ntawd pib ua tsis tiav lub hlis tom qab. Feem ntau tshwm sim los ntawm ib puag ncig raug, tshuaj tua kab mob, lossis kev ntxhov siab cyclic uas nws thiaj li ua rau qhov cuam tshuam. Peb muaj ib qho kev pab cuam sab nraum zoov qhov twg UV raug degraded TPE nto thiab nws thiaj li ua rau sib cais. Siv kaum yim lub hlis hauv daim teb kom pom nws.

Ua Nws Ua Haujlwm

Kev xaiv cov khoom ua ntej. Tau lub substrate thiab TPE sib phim rau pem hauv ntej. Khiav tev kev kuaj ntawm cov plaques ua ntej koj txiav hlau. Nqa koj tus neeg muab khoom siv rau hauv kev sib tham ntxov. Lawv muaj daim ntawv qhia kev sib raug zoo thiab tuaj yeem pom zoo cov qib tshwj xeeb.

Tsim lub substrate rau overmolding los ntawm qhov pib. Kev ntxhib los mos ntawm qhov sib txuas. Ntxiv cov khoom siv sib cuam tshuam qhov twg TPE tuaj yeem qhwv ib ncig ntawm cov nta lossis ntws los ntawm qhov. Muab koj tus kheej adhesion ntau dua li koj xav tias koj xav tau vim tias cov txheej txheem ntau lawm yuav tsis huv li tus qauv.

Tswj koj cov khoom muag substrate. Cia nws qhuav. Khaws nws kom huv si. Yog tias koj tab tom khiav nylon, cov khoom ntawd tawm ntawm lub tshuab ziab khaub ncaws mus rau hauv xovxwm thiab tsis muaj lwm qhov. Peb tau tsim ib thaj chaw tshwj xeeb ntawm qhov chaw nyob ib sab ntawm peb ob - tshuab txhaj tshuaj kom tsis muaj leej twg tuaj yeem kis tau cov substrates thaum tos thauj khoom.

Validate tus txheej txheem nrog ntau lawm tooling, ntau lawm cov ntaub ntawv, ntau lawm tswv. Cov qauv qauv ua los ntawm koj tus kws tshaj lij tshaj lij nyob rau hnub Saturday tsis qhia koj tias yuav muaj dab tsi tshwm sim rau hnub Tuesday tav su thaum B- hloov pauv tau ua haujlwm.

Ces ua piv txwv. Ntsuas. Kho. Qauv dua. Overmolding yog qhov zam tsawg dua li ib zaug - txhaj tshuaj ua haujlwm. Tab sis thaum koj tau txais nws txoj cai, koj xaus nrog qhov chaw uas yuav ua tsis tau lwm txoj hauv kev.

Tus neeg muas zaub nrog lub tev screwdriver handles? Peb hloov nws mus rau qib TPE sib txawv, ntxiv kev ntxhib los mos rau lub substrate cores, tsoo lub melt kub txog 15 degrees. Qhov chaw tau khiav mus rau cuaj xyoo tam sim no tsis muaj ib qho chaw rov qab los.