{"id":11732,"date":"2023-05-18T17:30:21","date_gmt":"2023-05-18T09:30:21","guid":{"rendered":"https:\/\/firstmold.com\/?p=11732"},"modified":"2025-07-15T13:33:24","modified_gmt":"2025-07-15T05:33:24","slug":"mold-runner","status":"publish","type":"post","link":"https:\/\/firstmold.com\/pl\/guides\/mold-runner\/","title":{"rendered":"Mold Runner i Sub-Runner: Czym s\u0105 i co nale\u017cy wzi\u0105\u0107 pod uwag\u0119 podczas projektowania"},"content":{"rendered":"

W naszych poprzednich dyskusjach zbadali\u015bmy koncepcj\u0119 wlewki formy<\/strong><\/a> jako integralna cz\u0119\u015b\u0107 systemu podawania. Dzi\u015b zag\u0142\u0119bimy si\u0119 w kolejn\u0105 struktur\u0119 tego systemu - prowadnic\u0119 formy i prowadnic\u0119 pomocnicz\u0105. Podobnie jak wlew, wiele projektanci form<\/strong><\/a> cz\u0119sto pomijaj\u0105 struktur\u0119 prowadnic i podprowadnic ze wzgl\u0119du na ich sta\u0142e i stosunkowo proste standardy projektowe. Je\u015bli chcesz zosta\u0107 najwy\u017cszej klasy projektantem form i dostarcza\u0107 najwy\u017cszej jako\u015bci formy, kt\u00f3re zadowol\u0105 klient\u00f3w, opanuj ka\u017cdy szczeg\u00f3\u0142.<\/p>\n\n\n\n

Co to jest Runner i Sub-Runner?<\/h2>\n\n\n\n

Jak zwykle, najpierw przejrzyjmy ca\u0142y system podawania, aby lepiej zrozumie\u0107 ten artyku\u0142. System podawania obejmuje struktury, kt\u00f3re przenosz\u0105 stopione tworzywo sztuczne z cylindra wtryskarka<\/strong><\/a> do gniazdo formy<\/strong><\/a>. Po wyrzuceniu roztopionego tworzywa sztucznego z dyszy maszyny, roztopione tworzywo sztuczne przechodzi przez wlew, prowadnic\u0119, prowadnic\u0119 po\u015bredni\u0105 i brama<\/strong><\/a>i ostatecznie wype\u0142nia wn\u0119k\u0119, tworz\u0105c plastikowe cz\u0119\u015bci.<\/p>\n\n\n\n

Prowadnica jest zatem przej\u015bciem mi\u0119dzy wlewem a bram\u0105, s\u0142u\u017c\u0105cym jako sekcja przej\u015bciowa, w kt\u00f3rej stopione tworzywo sztuczne przep\u0142ywa z wlewu do wn\u0119ki, odpowiedzialna za p\u0142ynne przekierowanie przep\u0142ywu stopu. W formach wielogniazdowych odgrywa rol\u0119 w rozprowadzaniu stopionego tworzywa do ka\u017cdego gniazda. Warto zauwa\u017cy\u0107, \u017ce w formach jednogniazdowych prowadnice zazwyczaj nie s\u0105 uwzgl\u0119dniane, co jest zwi\u0105zane z uk\u0142adem gniazda.<\/p>\n\n\n\n

\"System
System zasilania<\/figcaption><\/figure>\n\n\n\n

Wytyczne projektowe dla prowadnic formy<\/h2>\n\n\n\n

Kszta\u0142t przekroju kana\u0142u formy<\/h3>\n\n\n\n

Przekr\u00f3j prostok\u0105tny: <\/h4>\n\n\n\n

Prowadnice o prostok\u0105tnym kszta\u0142cie s\u0105 powszechne. Oferuj\u0105 one takie zalety jak \u0142atwo\u015b\u0107 produkcji, prosty projekt oprzyrz\u0105dowania i r\u00f3wnomierny rozk\u0142ad przep\u0142ywu. Wymiary prostok\u0105tnego przekroju mo\u017cna dostosowa\u0107 w oparciu o konkretne wymagania dotycz\u0105ce formowania cz\u0119\u015bci.<\/p>\n\n\n\n

Przekr\u00f3j trapezowy: <\/h4>\n\n\n\n

Prowadnice w kszta\u0142cie trapezu to kolejna opcja w projektowaniu prowadnic formy. Ten kszta\u0142t pomaga promowa\u0107 lepszy przep\u0142yw i zmniejsza spadek ci\u015bnienia, co skutkuje lepszym wype\u0142nieniem wn\u0119k formy. Szerszy koniec trapezu jest zwykle po\u0142\u0105czony z wlewem, podczas gdy w\u0119\u017cszy koniec jest po\u0142\u0105czony z bram\u0105.<\/p>\n\n\n\n

Okr\u0105g\u0142y przekr\u00f3j poprzeczny: <\/h4>\n\n\n\n

W niekt\u00f3rych przypadkach pierwszym wyborem mog\u0105 by\u0107 prowadnice w kszta\u0142cie ko\u0142a. Prowadnice te oferuj\u0105 doskona\u0142\u0105 charakterystyk\u0119 przep\u0142ywu i s\u0105 szczeg\u00f3lnie odpowiednie dla cz\u0119\u015bci o z\u0142o\u017conej geometrii lub gdy wymagany jest zr\u00f3wnowa\u017cony przep\u0142yw. \u015arednica okr\u0105g\u0142ego przekroju powinna by\u0107 dok\u0142adnie okre\u015blona, aby zapewni\u0107 optymalny przep\u0142yw i zminimalizowa\u0107 straty ci\u015bnienia.<\/p>\n\n\n\n

P\u00f3\u0142okr\u0105g\u0142y przekr\u00f3j poprzeczny: <\/h4>\n\n\n\n

Prowadnica w kszta\u0142cie p\u00f3\u0142okr\u0119gu ma profil p\u00f3\u0142kola. Kszta\u0142t ten zapewnia p\u0142ynny przep\u0142yw materia\u0142u i pomaga zminimalizowa\u0107 spadek ci\u015bnienia. Jest on cz\u0119sto stosowany, gdy zr\u00f3wnowa\u017cony przep\u0142yw i zmniejszone straty ci\u015bnienia maj\u0105 krytyczne znaczenie. \u015arednica p\u00f3\u0142okr\u0105g\u0142ego przekroju powinna by\u0107 odpowiednio dobrana, aby spe\u0142ni\u0107 wymagania dotycz\u0105ce przep\u0142ywu w konkretnym procesie formowania wtryskowego.<\/p>\n\n\n\n

Przekr\u00f3j w kszta\u0142cie litery U: <\/h4>\n\n\n\n

Prowadnica w kszta\u0142cie litery U ma zakrzywione dno i dwie pionowe \u015bciany, kt\u00f3re tworz\u0105 kszta\u0142t litery \"U\". Taka konstrukcja u\u0142atwia wydajny przep\u0142yw materia\u0142u i pozwala na \u0142atwiejsze oddzielenie systemu prowadnic od formowanej cz\u0119\u015bci. Przekr\u00f3j w kszta\u0142cie litery U jest powszechnie stosowany, gdy po\u017c\u0105dane jest \u0142atwe usuni\u0119cie systemu prowadnic lub gdy wlew znajduje si\u0119 na dole cz\u0119\u015bci.<\/p>\n\n\n\n

\"Rodzaje
Rodzaje przekroju kana\u0142u formy<\/figcaption><\/figure>\n\n\n\n

Wyb\u00f3r kszta\u0142tu przekroju zale\u017cy od takich czynnik\u00f3w, jak w\u0142a\u015bciwo\u015bci materia\u0142u, konstrukcja cz\u0119\u015bci, uk\u0142ad formy i wymagania produkcyjne. Ka\u017cdy kszta\u0142t ma swoje zalety i jest wybierany w oparciu o konkretne potrzeby procesu formowania.<\/p>\n\n\n\n

Rozmiar prowadnic formy i prowadnic pomocniczych<\/h3>\n\n\n\n

Kszta\u0142t i rozmiar prowadnic formy zale\u017cy od r\u00f3\u017cnych czynnik\u00f3w, w tym projektu produktu, konstrukcji formy i specyficznych wymaga\u0144 procesu formowania wtryskowego. Podczas gdy rozmiar produktu i grubo\u015b\u0107 \u015bcianki mog\u0105 wp\u0142ywa\u0107 na konstrukcj\u0119 prowadnicy, nie jest dok\u0142adne stwierdzenie, \u017ce prowadnice o wi\u0119kszym przekroju s\u0105 zawsze bardziej skuteczne w u\u0142atwianiu procesu nape\u0142niania. Zachowanie przep\u0142ywu materia\u0142u, geometria cz\u0119\u015bci, lokalizacja bramy i parametry procesu okre\u015blaj\u0105 optymaln\u0105 konstrukcj\u0119 prowadnicy.<\/p>\n\n\n\n

Dodatkowo, d\u0142ugo\u015b\u0107 prowadnicy nie wp\u0142ywa bezpo\u015brednio na lepko\u015b\u0107 tworzywa sztucznego. Lepko\u015b\u0107 zale\u017cy przede wszystkim od w\u0142a\u015bciwo\u015bci materia\u0142u i warunk\u00f3w przetwarzania.<\/p>\n\n\n\n

Materia\u0142y<\/td>\u015arednica prowadnic (mm)<\/td><\/tr>
ABS<\/strong><\/a> \/ SAN(AS)<\/td>4.8~9.5<\/td><\/tr>
POM<\/strong><\/a><\/td>3.0~10<\/td><\/tr>
ACRYLIC<\/strong><\/a><\/td>1.6~10<\/td><\/tr>
CA<\/td>1.6~11<\/td><\/tr>
PA66<\/strong><\/a><\/td>1.6~10<\/td><\/tr>
PPO<\/td>6.4~10<\/td><\/tr>
PPS<\/td>6.4~13<\/td><\/tr>
PC<\/strong><\/a><\/td>4.8~10<\/td><\/tr>
PE<\/strong><\/a><\/td>4.8~9.5<\/td><\/tr>
PP<\/strong><\/a><\/td>1.6~10<\/td><\/tr><\/tbody><\/table>
Zalecana \u015brednica prowadnicy dla popularnych tworzyw sztucznych <\/figcaption><\/figure>\n\n\n\n

Dobrze zaprojektowana prowadnica mo\u017ce znacz\u0105co wp\u0142yn\u0105\u0107 na og\u00f3ln\u0105 wydajno\u015b\u0107 i efektywno\u015b\u0107 procesu formowania wtryskowego:<\/p>\n\n\n\n

Rozmieszczenie prowadnic i podprowadnic formy<\/h3>\n\n\n\n

Istniej\u0105 dwa rodzaje uk\u0142ad\u00f3w kana\u0142\u00f3w formy: zr\u00f3wnowa\u017cone i niezr\u00f3wnowa\u017cone. W zr\u00f3wnowa\u017conym systemie kana\u0142\u00f3w, d\u0142ugo\u015b\u0107, kszta\u0142t i wymiary przekroju poprzecznego kana\u0142\u00f3w od wlewu do ka\u017cdej wn\u0119ki s\u0105 zaprojektowane tak, aby by\u0142y r\u00f3wne. Pomaga to osi\u0105gn\u0105\u0107 r\u00f3wnowag\u0119 termiczn\u0105 i r\u00f3wnowag\u0119 przep\u0142ywu tworzywa sztucznego w ka\u017cdej wn\u0119ce, co skutkuje sta\u0142\u0105 jako\u015bci\u0105 cz\u0119\u015bci. Z drugiej strony, niezr\u00f3wnowa\u017cony system kana\u0142\u00f3w pozwala tworzywu sztucznemu wchodzi\u0107 do ka\u017cdej wn\u0119ki w r\u00f3\u017cnym czasie, co prowadzi do r\u00f3\u017cnic w procesie nape\u0142niania i potencjalnie do produkcji r\u00f3\u017cnych cz\u0119\u015bci. Niezr\u00f3wnowa\u017cone systemy kana\u0142\u00f3w mog\u0105 jednak oferowa\u0107 korzy\u015bci, takie jak bardziej kompaktowe uk\u0142ady wn\u0119k, zmniejszony rozmiar szablonu i kr\u00f3tsza ca\u0142kowita d\u0142ugo\u015b\u0107 kana\u0142u.<\/p>\n\n\n\n

\"Zr\u00f3wnowa\u017cony
Zr\u00f3wnowa\u017cony uk\u0142ad biegaczy<\/figcaption><\/figure>\n\n\n\n
\"Niezr\u00f3wnowa\u017cony
Niezr\u00f3wnowa\u017cony uk\u0142ad biegaczy<\/figcaption><\/figure>\n\n\n\n

Niezale\u017cnie od tego, czy system prowadnic jest zr\u00f3wnowa\u017cony, czy niezr\u00f3wnowa\u017cony, wa\u017cne jest, aby wn\u0119ki by\u0142y symetryczne wzgl\u0119dem \u015brodka podstawy formy. Gwarantuje to, \u017ce przewidywany \u015brodek wn\u0119k i prowadnic pokrywa si\u0119 ze \u015brodkiem si\u0142y zacisku wtryskarki. W ten spos\u00f3b mo\u017cemy unikn\u0105\u0107 dodatkowych moment\u00f3w przechylaj\u0105cych podczas wtrysku.<\/p>\n\n\n\n

Zr\u00f3wnowa\u017cony system prowadnic jest korzystny, poniewa\u017c umo\u017cliwia sta\u0142y wtrysk i ci\u015bnienie trzymania<\/strong><\/a> we wszystkich gniazdach. Jest to szczeg\u00f3lnie korzystne w przypadku form wielogniazdowych, w kt\u00f3rych po\u017c\u0105dane jest zachowanie jednolito\u015bci w produkcji wszystkich produkt\u00f3w.<\/p>\n\n\n\n

Zasady projektowania runner\u00f3w i subrunner\u00f3w<\/h3>\n\n\n\n
    \n
  1. Upewnij si\u0119, \u017ce roztopione tworzywo sztuczne szybko wchodzi do wn\u0119ki przy najkr\u00f3tszej odleg\u0142o\u015bci i minimalnych stratach ci\u015bnienia cieplnego.<\/li>\n\n\n\n
  2. Umo\u017cliwia jednoczesne podawanie stopionego materia\u0142u do wn\u0119ki z r\u00f3\u017cnych bramek w identycznych warunkach temperatury i ci\u015bnienia.<\/li>\n\n\n\n
  3. Chocia\u017c wi\u0119ksze powierzchnie przekroju poprzecznego u\u0142atwiaj\u0105 formowanie i zapewniaj\u0105 odpowiednie ci\u015bnienie pakowania, bior\u0105c pod uwag\u0119 oszcz\u0119dno\u015b\u0107 materia\u0142u, nale\u017cy d\u0105\u017cy\u0107 do mniejszych powierzchni przekroju poprzecznego, aby zminimalizowa\u0107 zu\u017cycie plastiku, co r\u00f3wnie\u017c skraca czas ch\u0142odzenia.<\/li>\n\n\n\n
  4. Aby oszcz\u0119dza\u0107 materia\u0142 i wspomaga\u0107 ch\u0142odzenie, nale\u017cy d\u0105\u017cy\u0107 do minimalnego stosunku powierzchni do obj\u0119to\u015bci w prowadnicach.<\/li>\n\n\n\n
  5. Chropowato\u015b\u0107 powierzchni prowadnic nie powinna by\u0107 zbyt niska, aby zapobiec wci\u0105ganiu zimnego materia\u0142u do wn\u0119ki; zazwyczaj wystarczaj\u0105ca jest warto\u015b\u0107 Ra wynosz\u0105ca 1,6 \u03bcm.<\/li>\n\n\n\n
  6. Prowadnice i zasuwy s\u0105 zwykle po\u0142\u0105czone ze spadkami i \u0142ukami, co u\u0142atwia przep\u0142yw i nape\u0142nianie stopionego tworzywa sztucznego przy jednoczesnym zmniejszeniu opor\u00f3w przep\u0142ywu.<\/li>\n<\/ol>\n\n\n\n

    Czy konieczne jest zaprojektowanie prowadnicy podrz\u0119dnej w projekcie prowadnicy formy?<\/h2>\n\n\n\n

    Prowadnica pomocnicza jest zwykle u\u017cywana, gdy istnieje potrzeba podzielenia przep\u0142ywu stopionego tworzywa sztucznego na r\u00f3\u017cne kierunki w gnie\u017adzie formy. Mo\u017ce to u\u0142atwi\u0107 wype\u0142nianie z\u0142o\u017conych lub wielogniazdowych form poprzez kierowanie przep\u0142ywu do okre\u015blonych obszar\u00f3w lub komponent\u00f3w cz\u0119\u015bci.<\/p>\n\n\n\n

    Jednak w niekt\u00f3rych przypadkach prosta konstrukcja kana\u0142u bez kana\u0142u pomocniczego mo\u017ce by\u0107 wystarczaj\u0105ca do osi\u0105gni\u0119cia po\u017c\u0105danego wype\u0142nienia formy i jako\u015bci cz\u0119\u015bci. To, czy nale\u017cy zastosowa\u0107 prowadnic\u0119 pomocnicz\u0105, czy nie, zale\u017cy od konkretnych wymaga\u0144 projektu cz\u0119\u015bci i procesu formowania wtryskowego.<\/p>","protected":false},"excerpt":{"rendered":"

    Dowiedz si\u0119, czym s\u0105 runner i subrunner w formie i poznaj ich wytyczne projektowe, od podstawowych do zaawansowanych.<\/p>","protected":false},"author":5,"featured_media":11735,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[47],"tags":[60],"class_list":["post-11732","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-injection-mold-component"],"acf":[],"yoast_head":"\nMold Runner And Sub-Runner | Primary Design Tips<\/title>\n<meta name=\"description\" content=\"Figure out what the runner and sub-runner are in the mold and understand their design guidelines, from basic to advanced.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/firstmold.com\/pl\/guides\/mold-runner\/\" 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