Hoʻololi ʻana i ka injection

ʻO ka hoʻoheheʻe ʻana he hana paʻakikī.Ke hoʻohana nei i ka mīkini hydraulic kūikawā a i ʻole ka mīkini uila, hoʻoheheʻe ke kaʻina hana, hoʻokomo a hoʻonohonoho i ka plastic i loko o ke ʻano o kahi ʻano metala i hoʻokomo ʻia i loko o ka mīkini.

ʻO ka hoʻoheheʻe ʻia ʻana o ka plastik ka mea i hoʻohana nui ʻia i ke kaʻina hana hana no nā kumu like ʻole, me:

ʻoluʻolu:Hiki i nā mea hana ke koho i ka hoʻolālā mold a me ke ʻano o ka thermoplastic i hoʻohana ʻia no kēlā me kēia ʻāpana.ʻO kēia ke ʻano o ke kaʻina hana injection hiki ke hana i nā ʻāpana like ʻole, me nā ʻāpana paʻakikī a kikoʻī loa.

Pono:i ka manawa i hoʻonohonoho ʻia a hoʻāʻo ʻia ke kaʻina hana, hiki i nā mīkini hoʻoheheʻe injection ke hana i mau tausani mau mea i kēlā me kēia hola.

Kūlike:inā hoʻopaʻa paʻa ʻia nā ʻāpana kaʻina hana, hiki i ke kaʻina hana hoʻoheheʻe injection ke hana i nā tausani o nā ʻāpana wikiwiki i kahi ʻano kūlike.

Kūʻai-pono:i ka wā i kūkulu ʻia ai ka poʻi (ʻo ia ka mea ʻoi loa ke kumu kūʻai), ʻoi aku ka haʻahaʻa o ke kumukūʻai o ka hana ʻana i kēlā me kēia ʻāpana, ʻoiai inā i hana ʻia i nā helu kiʻekiʻe.

ʻAno maikaʻi:ke ʻimi nei nā mea hana i nā mea ikaika, tensile a kikoʻī paha, hiki i ke kaʻina hana hoʻoheheʻe injection ke hana pinepine iā lākou i kahi kiʻekiʻe kiʻekiʻe.

ʻO kēia kumu kūʻai, kūpono a me ka maikaʻi o ka ʻāpana kekahi o nā kumu i koho ai nā ʻoihana he nui e hoʻohana i nā ʻāpana i hoʻoheheʻe ʻia no kā lākou huahana.

ʻO ke ala kūpono e hana ai i nā ʻāpana he nui

ʻO ka hoʻoheheʻe ʻia ʻana he ala kumu kūʻai e hana ai i nā ʻāpana he nui, kahi kūpono ia no nā ʻoihana pono e hana i nā mea he nui i ka manawa pōkole.

pololei loa

Hana ʻia nā ʻōpala injection me nā ʻae paʻa loa a hiki ke hana i nā ʻāpana me ka liʻiliʻi liʻiliʻi ma waena o lākou.ʻO ia ke ʻano hiki iā ʻoe ke hōʻoiaʻiʻo e like like kēlā me kēia ʻāpana me ka mea aʻe, he mea nui inā ʻoe e ʻimi nei i ke kūpaʻa i kāu huahana a inā makemake ʻoe i kāu huahana e hui pono me kahi ʻāpana ʻē aʻe mai ka laina o ka mea hana.

ʻO ka hana mua o ka hoʻoheheʻe ʻia ʻana o ka hana ʻana i ka mold iā ia iho.Hana ʻia ka hapa nui o nā poni mai ka metala, maʻamau ka alumini a i ʻole ke kila, a me ka mīkini pololei e kūlike i nā hiʻohiʻona o ka huahana a lākou e hana ai.

I ka manawa i hana ʻia ai ka poʻi e ka mea hana poʻo, ua hānai ʻia nā mea no ka ʻāpana i loko o ka pahu wela a hui pū ʻia me ka hoʻohana ʻana i kahi ʻano helical screw.Hoʻoheheʻe ʻia ka mea i hoʻoheheʻe ʻia i loko o ka pahu a hoʻoheheʻe ʻia ka mea hoʻoheheʻe ʻia a i ʻole nā ​​​​mea plastik i hoʻoheheʻe ʻia i loko o ka lua poʻo kahi e maʻalili a paʻakikī, e kūlike me ke ʻano o ka poʻo.Hiki ke hoʻemi ʻia ka manawa hoʻoluʻu ma o ka hoʻohana ʻana i nā laina hoʻoluʻu e hoʻoheheʻe i ka wai a i ʻole ka aila mai kahi mea hoʻoponopono wela o waho.Hoʻokomo ʻia nā mea hana mold ma luna o nā mold plate (a i ʻole 'platens'), e wehe ana i ka wā i paʻa ai ka mea i hiki i nā pine ejector ke hoʻokuʻu i ka ʻāpana mai ka ʻōpala.

Hiki ke hoʻohui ʻia nā mea hoʻokaʻawale i hoʻokahi ʻāpana i kahi ʻano hoʻoheheʻe injection i kapa ʻia ʻo ʻelua-pana pahu.Hiki ke hoʻohana ʻia kēia ʻenehana e hoʻohui i kahi paʻi palupalu i nā huahana plastik, hoʻohui i nā kala i kahi ʻāpana a i ʻole hana i nā mea me nā ʻano hana like ʻole.

Hiki ke hana ʻia nā ʻōpala i nā lua hoʻokahi a i ʻole he nui.Hiki ke loaʻa nā ʻāpana like ʻole i loko o kēlā me kēia lua a i ʻole hiki ke hoʻokaʻawale i nā ʻāpana o nā geometries like ʻole.ʻAʻole kūpono nā ʻāpana alumini i ka hana kiʻekiʻe a i ʻole nā ​​ʻāpana me ka ʻae ʻana i nā ʻāpana haʻahaʻa no ka mea he haʻahaʻa ko lākou mau waiwai mechanical a hiki ke maʻalahi i ka ʻaʻahu, deformation a me ka pōʻino ma muli o ka hoʻoheheʻe ʻana a me ka hoʻopaʻa ʻana.ʻOiai ʻoi aku ka lōʻihi o nā poni kila, ʻoi aku ka maikaʻi ma mua o nā poni alumini.

Pono ke kaʻina hana hoʻoheheʻe ʻana i ka hoʻolālā akahele, me ke ʻano a me nā hiʻohiʻona o ka ʻāpana, nā mea hana no ka ʻāpana a me ka mold a me nā waiwai o ka mīkini.ʻO ka hopena, aia nā manaʻo like ʻole e pono e noʻonoʻo ʻia i ka wā o ka hoʻoheheʻe ʻana.

Nui nā manaʻo e noʻonoʻo ai ma mua o ka hana ʻana i ka injection molding:

1. Waiwai

Hiki ke kiʻekiʻe ke kumukūʻai komo no ka hana ʻana i ka injection - hāʻawi ʻia i ke kumukūʻai o ka mīkini a me nā mold iā lākou iho.

2. Ka Nui Hana

He mea nui e hoʻoholo i ka nui o nā ʻāpana āu e makemake ai e hana i mea e hoʻoholo ai inā ʻo ka hoʻoheheʻe ʻana i ke ʻano o ke kumu kūʻai.

3. Nā kumu hoʻolālā

ʻO ka hoʻemi ʻana i ka helu o nā ʻāpana a me ka hoʻomaʻamaʻa ʻana i ke geometry o kāu mau mea e maʻalahi ai ka hoʻoheheʻe ʻana.Eia kekahi, he mea nui ka hoʻolālā ʻana o ka mea hana mold e pale i nā hemahema i ka wā hana.

4. Noonoo hana

ʻO ka hoʻemi ʻana i ka manawa pōʻaiapili e kōkua i ka hana ʻana e like me ka hoʻohana ʻana i nā mīkini me nā mea hoʻoheheʻe wela a me nā mea hana noʻonoʻo maikaʻi.ʻO ia mau hoʻololi liʻiliʻi a me ka hoʻohana ʻana i nā ʻōnaehana hoʻokele wela e hiki ke hoʻohālikelike i ka mālama ʻana i kāu mau ʻāpana.E loaʻa nō hoʻi nā kumukūʻai mai ka hōʻemi ʻana i nā koi o ka hui, ʻoiai inā ʻoe e hana nei i nā tausani he mau miliona o nā ʻāpana.

ʻO ka hoʻoheheʻe ʻia ʻana he hana kumukūʻai, akā aia kekahi mau ala e hiki ai iā ʻoe ke hōʻemi i nā kumukūʻai mold, me:

Hoʻopau i nā ʻokiʻoki

Wehe i nā hiʻohiʻona pono ʻole

E hoʻohana i ke ʻano o ka lua kumu

E hōʻemi i ka hoʻopau ʻana i nā mea hoʻonaninani

Hoʻolālā i nā ʻāpana e pili pono iā ʻoe iho

E hoʻololi a hoʻohana hou i nā poni i loaʻa

Nānā i ka nānā ʻana i ka DFM

E hoʻohana i ka nui o ka lua a i ʻole ke ʻano ʻohana

E noʻonoʻo i ka nui o kāu ʻāpana

Me ka ʻoi aku o 85,000 mau ʻohana plastik i loaʻa a me nā ʻohana polymer 45, aia ka waiwai o nā plastik like ʻole i hiki ke hoʻohana ʻia no ka hoʻoheheʻe ʻana.ʻO kēia mau mea, hiki ke hoʻokomo ākea i nā polymers i ʻelua pūʻulu;nā thermosets a me nā thermoplastics.

ʻO nā ʻano plastik maʻamau i hoʻohana ʻia he polyethylene high-density (HDPE) a me ka polyethylene haʻahaʻa haʻahaʻa (LDPE).Hāʻawi ka Polyethylene i nā pono he nui e pili ana i nā pae ductility kiʻekiʻe, ka ikaika tensile maikaʻi, ke kūpaʻa hopena ikaika, ke kūʻē i ka hoʻoheheʻe ʻana i ka wai, a me ka recyclability.

ʻO nā mea ʻē aʻe i hoʻohana pinepine ʻia i loko o ka injection molded plastics penei:

1. Acrylonitrile Butadiene Styrene (ABS)

Hoʻohana nui ʻia kēia plastic paʻakikī a paʻa i ka hopena ma waena o ka ʻoihana.Me ke kūpaʻa maikaʻi i nā ʻakika a me nā kumu, hāʻawi pū ʻo ABS i nā haʻahaʻa haʻahaʻa haʻahaʻa a me ke kūpaʻa kiʻekiʻe.

2. Polycarbonate (PC)

He haʻahaʻa ka liʻiliʻi a me ke kūpaʻa maikaʻi o kēia plastik ikaika a paʻa i ka hopena.Hiki i ka PC ke hāʻawi i ka hoʻopau hoʻonaninani kiʻekiʻe a me ka pale wela maikaʻi.

3. Aliphatic Polyamides (PPA)

Nui nā ʻano like ʻole o ka PPA (a i ʻole nā ​​​​nylons), kēlā me kēia mea i kona pono ponoʻī.ʻO ka ʻōlelo maʻamau, hāʻawi nā nylons i ka ikaika kiʻekiʻe a me ke kūpaʻa wela a me ke kūpaʻa kemika, ʻokoʻa ka kūʻē i nā ʻakika ikaika a me nā kumu.ʻO kekahi mau nylons he pale abrasion a hāʻawi i ka paʻakikī a me ka ʻoʻoleʻa maikaʻi me ka ikaika hopena maikaʻi.

4. Polyoxymethylene (POM)

ʻIke mau ʻia ʻo acetal, he kiʻekiʻe ka paʻakikī, ʻoʻoleʻa, ikaika a paʻakikī kēia plastic.Loaʻa iā ia ka lubricity maikaʻi a kū i ka hydrocarbons a me nā mea hoʻoheheʻe organik.Hāʻawi ka elasticity maikaʻi a me ka pahee i nā pono no kekahi mau noi.

5. Polymethyl Methacrylate (PMMA)

ʻO ka PMMA, ka mea i kapa ʻia ʻo acrylic, hāʻawi i nā waiwai optical maikaʻi, kiʻekiʻe kiʻekiʻe a me ka pale ʻana.Hāʻawi pū ia i ka emi haʻahaʻa a me ka liʻiliʻi liʻiliʻi no nā geometries me nā ʻāpana lahilahi a noʻonoʻo.

6. Polypropylene (PP)

Hāʻawi kēia mea resin maʻalahi i ke kūʻē i ka hopena kiʻekiʻe i kekahi mau māka akā hiki ke palupalu i nā mahana anuanu (i ka hihia o propylene homopolymer).Hāʻawi nā Copolymers i ke kūʻē ʻoi aku i ka hopena aʻo ka PP hoʻi e ʻaʻahu ʻia, maʻalahi a hiki ke hāʻawi i ka elongation kiʻekiʻe loa, a me ke kūpaʻa ʻana i nā waikawa a me nā kumu.

7. Polybutylene Terephthalate (PBT)

ʻO nā waiwai uila maikaʻi ka PBT kūpono no nā mea mana a me nā noi kaʻa.ʻO ka ikaika mai ka haʻahaʻa a hiki i ke kiʻekiʻe ma muli o ke aniani hoʻopiha, me nā māka i hoʻopiha ʻole ʻia he paʻakikī a maʻalahi.Hōʻike pū ka PBT i nā wahie, nā ʻaila, nā momona a me nā mea hoʻoheheʻe he nui, ʻaʻole ia e komo i nā mea ʻono.

8. Polyphenylsulfone (PPSU)

ʻO kahi mea paʻa paʻa me ka paʻakikī kiʻekiʻe, ka wela a me ke kūpaʻa wela, ʻo ka PPSU ka mea kūʻē i ka radiation sterilization, alkalis a me nā waikawa nāwaliwali.

9. Polyether Ether Ketone (PEEK)

ʻO kēia kiʻekiʻe kiʻekiʻe, kiʻekiʻe-hana resin hāʻawi i ka wela a me ka lapalapa ahi, ka ikaika maikaʻi a me ke kūpaʻa dimensional, a me ke kūpaʻa kemika maikaʻi.

10. Polyetherimide (PEI)

Hāʻawi ʻo PEI (a i ʻole Ultem) i ke kūpaʻa wela kiʻekiʻe a me ka retardancy lapalapa, me ka ikaika maikaʻi loa, ke kūpaʻa dimensional a me ke kūpaʻa kemika.

Hoʻopuka ka hoʻoheheʻe ʻana i nā uku haʻahaʻa haʻahaʻa e pili ana i nā kaʻina hana kuʻuna e like me ka mīkini CNC e ʻoki ana i nā pākēneka nui o kahi poloka a i ʻole pepa.He mea maikaʻi ʻole paha kēia i nā kaʻina hana hoʻohui e like me ka paʻi 3D me ka haʻahaʻa haʻahaʻa.

ʻO ka ʻōpala palaka mai ka hana hoʻoheheʻe ʻia ʻana e hele mau mai nā wahi ʻehā:

ʻO ka sprue

ʻO nā kukini

ʻO nā wahi puka

ʻO kēlā me kēia mea e kahe ana i waho o ka ʻāpana ponoʻī (kahi kūlana i kapa ʻia ʻo "flash")

ʻO nā mea wela wela, e like me ka epoxy resin e hoʻōla i ka wā i ʻike ʻia i ka ea, he mea ia e ho'ōla a e wela ma hope o ka hoʻōla ʻana inā hoʻāʻo ʻia e hoʻoheheʻe.ʻO nā mea thermoplastic, ma ka ʻokoʻa, he mea plastik hiki ke hoʻoheheʻe ʻia, ʻoluʻolu a paʻa, a laila hoʻoheheʻe hou ʻia me ke ahi ʻole.

Me nā mea thermoplastic, hiki ke hana hou ʻia a hoʻohana hou ʻia.I kekahi manawa hiki kēia ma ka papahele o ka hale hana.Hoʻopili lākou i nā sprues/runners a me nā ʻāpana hōʻole.A laila hoʻohui lākou i kēlā mea i loko o ka mea maka i komo i loko o ka mīkini paʻi injection.Ua kapa ʻia kēia mea ʻo "re-grind".

ʻO ka maʻamau, e kaupalena nā keʻena hoʻomalu maikaʻi i ka nui o ka regrind i ʻae ʻia e hoʻihoʻi ʻia i loko o ka paʻi.(Hiki ke hoʻohaʻahaʻa ʻia kekahi mau mea hana o ka plastic i ka wā i hoʻoheheʻe ʻia ai.

A i ʻole, inā he nui lākou, hiki i kahi hale hana ke kūʻai aku i kēia wili hou i kekahi hale hana ʻē aʻe e hiki ke hoʻohana.Hoʻohana maʻamau ka mea regrind no nā ʻāpana haʻahaʻa ʻaʻole pono nā waiwai hana kiʻekiʻe.