{"id":4229,"date":"2026-11-02T14:20:03","date_gmt":"2026-11-02T06:20:03","guid":{"rendered":"http:\/\/0"},"modified":"2026-11-02T11:50:53","modified_gmt":"2026-11-02T03:50:53","slug":"injection-mold-shutoff-design-preventing-flash-at-the-source","status":"publish","type":"post","link":"https:\/\/www.jcinjectionmolding.com\/vi\/blog\/injection-mold-shutoff-design-preventing-flash-at-the-source\/","title":{"rendered":"Ch\u1eb7n D\u00f2ng Khu\u00f4n \u00c9p Phun: Ng\u0103n Ng\u1eeba Ba Via T\u1eeb G\u1ed1c"},"content":{"rendered":"

\u0110i\u1ec3m ch\u1eb7n khu\u00f4n l\u00e0 ranh gi\u1edbi th\u00e9p-ti\u1ebfp-gi\u00e1p-th\u00e9p ng\u0103n nh\u1ef1a x\u00e2m nh\u1eadp v\u00e0o m\u1ed9t l\u1ed7 m\u1edf ho\u1eb7c chi ti\u1ebft c\u1ea7n gi\u1eef s\u1ea1ch. Khi b\u1ecb r\u00f2 r\u1ec9, k\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 l\u00e0 ba-via, l\u1ed7 b\u1ecb b\u00edt, ho\u1eb7c m\u1ed9t chi ti\u1ebft kh\u00f4ng c\u00f2n kh\u1edbp v\u1edbi b\u1ed9 ph\u1eadn l\u1eafp gh\u00e9p c\u1ee7a n\u00f3. C\u00e1ch kh\u1eafc ph\u1ee5c kh\u00f4ng t\u1ef1 \u0111\u1ed9ng l\u00e0 \u201csi\u1ebft ch\u1eb7t khu\u00f4n\u201d: g\u00f3c ch\u1eb7n, chi\u1ec1u d\u00e0i ti\u1ebfp x\u00fac, k\u1ebft c\u1ea5u \u0111\u1ee1, v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ed9 m\u00e0i m\u00f2n ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t c\u00f9ng nhau trong thi\u1ebft k\u1ebf khu\u00f4n<\/a>.<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y t\u1eadp trung v\u00e0o c\u00e1c \u0111i\u1ec3m ch\u1eb7n khu\u00f4n \u00e9p phun th\u00f4ng th\u01b0\u1eddng. N\u00f3 kh\u00e1c v\u1edbi vi\u1ec7c ch\u1ecdn \u0111\u01b0\u1eddng ph\u00e2n khu\u00f4n ho\u1eb7c ch\u1ea9n \u0111o\u00e1n m\u1ecdi hi\u1ec7n t\u01b0\u1ee3ng ba-via; c\u00e2u h\u1ecfi \u1edf \u0111\u00e2y l\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 thi\u1ebft k\u1ebf v\u00e0 duy tr\u00ec giao di\u1ec7n th\u00e9p c\u1ee5c b\u1ed9 l\u00e0m k\u00edn m\u1ed9t chi ti\u1ebft c\u1ee5 th\u1ec3.<\/p>\n

\u672c\u6307\u5357\u5185\u5bb9\uff1a<\/strong><\/p>\n

    \n
  1. Ch\u1ee9c n\u0103ng c\u1ee7a \u0111i\u1ec3m ch\u1eb7n<\/a><\/li>\n
  2. H\u00ecnh h\u1ecdc v\u00e0 k\u1ebft c\u1ea5u \u0111\u1ee1<\/a><\/li>\n
  3. C\u00e1ch r\u00f2 r\u1ec9 ph\u00e1t sinh<\/a><\/li>\n
  4. Danh s\u00e1ch ki\u1ec3m tra \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf<\/a><\/li>\n
  5. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<\/ol>\n

    \u0110i\u1ec3m ch\u1eb7n khu\u00f4n c\u1ea7n \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u g\u00ec?<\/h2>\n

    M\u1ed9t \u0111i\u1ec3m ch\u1eb7n ph\u1ea3i ti\u1ebfp x\u00fac v\u1edbi b\u1ec1 m\u1eb7t th\u00e9p \u0111\u1ed1i di\u1ec7n v\u1edbi \u0111\u1ee7 \u0111\u1ed9 l\u1eb7p l\u1ea1i \u0111\u1ec3 ng\u0103n d\u00f2ng ch\u1ea3y nh\u1ef1a kh\u00f4ng mong mu\u1ed1n trong khi v\u1eabn cho ph\u00e9p khu\u00f4n \u0111\u00f3ng l\u1ea1i m\u00e0 kh\u00f4ng b\u1ecb h\u01b0 h\u1ea1i. N\u00f3 c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t c\u1eeda s\u1ed5, r\u00e3nh, l\u1ed7, ho\u1eb7c ranh gi\u1edbi c\u1ee5c b\u1ed9 gi\u1eefa c\u00e1c v\u00f9ng l\u00f2ng khu\u00f4n. M\u1ee5c ti\u00eau kh\u00f4ng ph\u1ea3i l\u00e0 khe h\u1edf nh\u1ecf nh\u1ea5t c\u00f3 th\u1ec3 b\u1eb1ng m\u1ecdi gi\u00e1; m\u00e0 l\u00e0 m\u1ed9t \u0111i\u1ec1u ki\u1ec7n ti\u1ebfp x\u00fac \u1ed5n \u0111\u1ecbnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o, ki\u1ec3m tra v\u00e0 duy tr\u00ec.<\/p>\n

    X\u00e1c \u0111\u1ecbnh ch\u1ee9c n\u0103ng c\u1ee7a \u0111i\u1ec3m ch\u1eb7n tr\u00ean b\u1ea3n v\u1ebd v\u00e0 ghi ch\u00fa c\u00e1c y\u00eau c\u1ea7u c\u1ee7a chi ti\u1ebft li\u1ec1n k\u1ec1. M\u1ed9t chi ti\u1ebft g\u1ea7n b\u1ec1 m\u1eb7t l\u00e0m k\u00edn ho\u1eb7c b\u1ec1 m\u1eb7t th\u1ea9m m\u1ef9 c\u00f3 gi\u1edbi h\u1ea1n ch\u1ea5p nh\u1eadn kh\u00e1c v\u1edbi m\u1ed9t l\u1ed7 th\u00f4ng h\u1edf \u1ea9n. X\u00e1c \u0111\u1ecbnh n\u01a1i ba-via kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn v\u00e0 c\u00e1ch chi ti\u1ebft s\u1ebd \u0111\u01b0\u1ee3c ki\u1ec3m tra sau khi \u00e9p.<\/p>\n

    G\u00f3c, chi\u1ec1u d\u00e0i v\u00e0 k\u1ebft c\u1ea5u \u0111\u1ee1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a \u0111i\u1ec3m ch\u1eb7n nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n

    C\u00e1c b\u1ec1 m\u1eb7t ch\u1eb7n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng h\u00ecnh h\u1ecdc c\u00f3 \u0111\u1ed9 d\u1ed1c, b\u1eadc, ho\u1eb7c l\u1ed3ng v\u00e0o nhau t\u00f9y thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn v\u00e0 h\u00ecnh d\u1ea1ng chi ti\u1ebft. M\u1ed9t b\u1ec1 m\u1eb7t d\u1ed1c ho\u1eb7c \u0111\u01b0\u1ee3c \u0111\u1ee1 k\u00e9m c\u00f3 th\u1ec3 d\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi \u00e1p l\u1ef1c v\u00e0 m\u00e0i m\u00f2n; m\u1ed9t d\u1ea3i ti\u1ebfp x\u00fac h\u1eb9p c\u00f3 th\u1ec3 b\u1ecb h\u01b0 h\u1ea1i ho\u1eb7c kh\u00f3 m\u00e0i \u0111\u00e1. C\u00e1c \u0111i\u1ec3m ch\u1eb7n d\u00e0i c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o ra \u0111\u1ed9 nh\u1ea1y c\u0103n ch\u1ec9nh. Ng\u01b0\u1eddi l\u00e0m khu\u00f4n n\u00ean th\u1ec3 hi\u1ec7n c\u00e1c b\u1ec1 m\u1eb7t l\u1eafp gh\u00e9p v\u00e0 k\u1ebft c\u1ea5u \u0111\u1ee1 th\u00e9p trong m\u1eb7t c\u1eaft.<\/p>\n

    \"Supported<\/p>\n

    Ki\u1ec3m tra r\u1eb1ng \u0111i\u1ec3m ch\u1eb7n \u0111\u01b0\u1ee3c \u0111\u1ee1 b\u1edfi \u0111\u1ee7 th\u00e9p v\u00e0 k\u1ebft c\u1ea5u khu\u00f4n c\u1ee5c b\u1ed9 kh\u00f4ng b\u1ecb u\u1ed1n qu\u00e1 m\u1ee9c d\u01b0\u1edbi t\u1ea3i tr\u1ecdng k\u1eb9p v\u00e0 l\u00f2ng khu\u00f4n. C\u00e1c k\u00eanh l\u00e0m m\u00e1t, v\u00edt, mi\u1ebfng ch\u00e8n v\u00e0 c\u00e1c c\u01a1 c\u1ea5u chuy\u1ec3n \u0111\u1ed9ng li\u1ec1n k\u1ec1 c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf ti\u1ebft di\u1ec7n kh\u1ea3 d\u1ee5ng. Khi m\u1ed9t mi\u1ebfng ch\u00e8n c\u00f3 th\u1ec3 thay th\u1ebf l\u00e0 kh\u1ea3 thi, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c s\u1eeda ch\u1eefa, nh\u01b0ng n\u00f3 t\u1ea1o th\u00eam m\u1ed9t giao di\u1ec7n l\u1eafp gh\u00e9p kh\u00e1c c\u1ea7n ki\u1ec3m so\u00e1t.<\/p>\n

    T\u1ea1i sao m\u1ed9t \u0111i\u1ec3m ch\u1eb7n b\u1eaft \u0111\u1ea7u r\u00f2 r\u1ec9?<\/h2>\n

    Ba via c\u00f3 th\u1ec3 ph\u00e1t sinh khi b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac b\u1ecb m\u00e0i m\u00f2n, s\u1ee9t m\u1ebb, b\u1ecb nhi\u1ec5m b\u1ea9n ho\u1eb7c m\u1ea5t c\u0103n ch\u1ec9nh. D\u1ee5ng c\u1ee5 c\u0169ng c\u00f3 th\u1ec3 b\u1ecb r\u00f2 khi th\u00e9p c\u1ee5c b\u1ed9 kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ee1 ho\u1eb7c khi \u0111i\u1ec1u ki\u1ec7n \u0111\u00fac l\u00e0m l\u1ed9 ra ranh gi\u1edbi y\u1ebfu s\u1eb5n c\u00f3. M\u1ed9t m\u00f3n thi\u1ebfu keo ho\u1eb7c m\u1ed9t chi ti\u1ebft b\u1ecb ch\u1eb7n c\u00f3 th\u1ec3 do c\u00e1c nguy\u00ean nh\u00e2n kh\u00e1c nhau, v\u00ec v\u1eady h\u00e3y ki\u1ec3m tra h\u00ecnh d\u1ea1ng thay v\u00ec cho r\u1eb1ng m\u1ecdi khuy\u1ebft t\u1eadt \u0111\u1ec1u l\u00e0 do m\u1eb7t ch\u1eb7n b\u1ecb l\u1ecfng.<\/p>\n

    \"Small<\/p>\n

    Ch\u1ee5p \u1ea3nh khuy\u1ebft t\u1eadt, x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a n\u00f3 so v\u1edbi m\u1eb7t ch\u1eb7n v\u00e0 ghi l\u1ea1i xem n\u00f3 xu\u1ea5t hi\u1ec7n d\u1ecdc theo to\u00e0n b\u1ed9 \u0111\u01b0\u1eddng hay ch\u1ec9 \u1edf m\u1ed9t khu v\u1ef1c. So s\u00e1nh b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac th\u00e9p, chuy\u1ec3n \u0111\u1ed9ng d\u1eabn h\u01b0\u1edbng v\u00e0 t\u00ecnh tr\u1ea1ng khu\u00f4n tr\u01b0\u1edbc khi \u0111i\u1ec1u ch\u1ec9nh. \u0110\u1ed1i v\u1edbi ba via l\u1eb7p l\u1ea1i d\u1ecdc theo m\u1eb7t ph\u00e2n khu\u00f4n ch\u00ednh, h\u00e3y d\u00f9ng m\u1ee5c ri\u00eang ch\u1ea9n \u0111o\u00e1n ba via \u0111\u01b0\u1eddng ph\u00e2n khu\u00f4n<\/a>; m\u1ee5c n\u00e0y gi\u1ea3i quy\u1ebft m\u1ed9t d\u1ea1ng h\u01b0 h\u1ecfng r\u1ed9ng h\u01a1n.<\/p>\n

    N\u1ed9i dung n\u00e0o c\u1ea7n c\u00f3 trong bu\u1ed5i \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf m\u1eb7t ch\u1eb7n?<\/h2>\n
      \n
    • \u0110\u00e1nh d\u1ea5u t\u1eebng m\u1eb7t ch\u1eb7n tr\u00ean b\u1ea3n v\u1ebd CAD d\u1ea1ng m\u1eb7t c\u1eaft v\u00e0 li\u00ean h\u1ec7 n\u00f3 v\u1edbi chi ti\u1ebft th\u00e0nh ph\u1ea9m.<\/li>\n
    • X\u00e1c nh\u1eadn g\u00f3c m\u1eb7t, v\u00f9ng ti\u1ebfp x\u00fac, th\u00e9p \u0111\u1ee1 v\u00e0 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn \u0111\u1ec3 ki\u1ec3m tra.<\/li>\n
    • Ki\u1ec3m tra t\u01b0\u01a1ng t\u00e1c v\u1edbi slide, lifter, insert, \u1ed1c v\u00edt v\u00e0 h\u1ec7 th\u1ed1ng l\u00e0m ngu\u1ed9i.<\/li>\n
    • X\u00e1c \u0111\u1ecbnh m\u1ee9c ba via cho ph\u00e9p, v\u1ebft d\u1ea5u v\u00e0 ti\u00eau ch\u00ed nghi\u1ec7m thu k\u00edch th\u01b0\u1edbc.<\/li>\n
    • L\u1eadp k\u1ebf ho\u1ea1ch c\u00e1ch l\u00e0m s\u1ea1ch, ki\u1ec3m tra v\u00e0 s\u1eeda ch\u1eefa b\u1ec1 m\u1eb7t ti\u1ebfp gi\u00e1p.<\/li>\n<\/ul>\n

      Y\u00eau c\u1ea7u \u0111\u00e1nh gi\u00e1 m\u1eb7t ch\u1eb7n \u1edf t\u1ef7 l\u1ec7 c\u1ee7a chi ti\u1ebft th\u1ef1c t\u1ebf. B\u1ea3n d\u1ef1ng khu\u00f4n t\u1ed5ng qu\u00e1t hi\u1ebfm khi cho th\u1ea5y li\u1ec7u m\u1ed9t v\u00f9ng ti\u1ebfp x\u00fac m\u1ecfng, h\u1ed1c s\u00e2u hay insert c\u1ee5c b\u1ed9 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c b\u1ea3o tr\u00ec s\u1ea3n xu\u1ea5t hay kh\u00f4ng.<\/p>\n

      Nh\u1eefng c\u00e2u h\u1ecfi ng\u01b0\u1eddi mua th\u01b0\u1eddng h\u1ecfi v\u1ec1 m\u1eb7t ch\u1eb7n c\u1ee7a khu\u00f4n<\/h2>\n

      C\u00f3 th\u1ec3 thi\u1ebft k\u1ebf m\u1eb7t ch\u1eb7n \u0111\u1ec3 kh\u00f4ng bao gi\u1edd b\u1ecb ba via kh\u00f4ng?<\/h3>\n

      Kh\u00f4ng. Thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 gi\u1ea3m r\u1ee7i ro, nh\u01b0ng \u0111\u1ed9 m\u00e0i m\u00f2n d\u1ee5ng c\u1ee5, nhi\u1ec5m b\u1ea9n, c\u0103n ch\u1ec9nh, h\u00e0nh vi c\u1ee7a nh\u1ef1a v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3. H\u00e3y x\u00e1c \u0111\u1ecbnh m\u1ed9t gi\u1edbi h\u1ea1n nghi\u1ec7m thu c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng.<\/p>\n

      C\u00f3 n\u00ean l\u00e0m m\u1ecdi m\u1eb7t ch\u1eb7n th\u00e0nh insert c\u00f3 th\u1ec3 thay th\u1ebf kh\u00f4ng?<\/h3>\n

      Kh\u00f4ng. Kh\u1ea3 n\u0103ng thay th\u1ebf ch\u1ec9 h\u1eefu \u00edch khi giao di\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp v\u00e0 b\u1ea3o tr\u00ec m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady. M\u1ed9t chi ti\u1ebft li\u1ec1n kh\u1ed1i c\u00f3 th\u1ec3 \u0111\u01a1n gi\u1ea3n h\u01a1n khi kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn \u0111\u1ec3 s\u1eeda ch\u1eefa v\u00e0 r\u1ee7i ro m\u00e0i m\u00f2n th\u1ea5p.<\/p>\n

      R\u00f2 r\u1ec9 \u1edf van ch\u1eb7n c\u00f3 gi\u1ed1ng v\u1edbi ba via \u1edf \u0111\u01b0\u1eddng ph\u00e2n khu\u00f4n kh\u00f4ng?<\/h3>\n

      Ch\u00fang c\u00f3 th\u1ec3 tr\u00f4ng gi\u1ed1ng nhau, nh\u01b0ng van ch\u1eb7n c\u1ee5c b\u1ed9 l\u00e0m k\u00edn m\u1ed9t chi ti\u1ebft c\u1ee5 th\u1ec3 trong khi \u0111\u01b0\u1eddng ph\u00e2n khu\u00f4n l\u00e0 ranh gi\u1edbi t\u00e1ch khu\u00f4n r\u1ed9ng h\u01a1n. H\u00e3y x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed khuy\u1ebft t\u1eadt tr\u01b0\u1edbc khi ch\u1ecdn c\u00e1ch kh\u1eafc ph\u1ee5c.<\/p>","protected":false},"excerpt":{"rendered":"

      A mold shutoff is the steel-to-steel boundary that blocks resin from entering an opening or feature that must remain clear. When it leaks, the result may be flash, a blocked hole, or a part that no longer fits its mating component. The fix is not automatically \u201ctighten the mold\u201d: shutoff angle, contact length, support, material, […]<\/p>\n","protected":false},"author":1,"featured_media":4235,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4229","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/posts\/4229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/comments?post=4229"}],"version-history":[{"count":0,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/posts\/4229\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media\/4235"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/media?parent=4229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/categories?post=4229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/vi\/wp-json\/wp\/v2\/tags?post=4229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}