CA2462311A1 - Tip assembly having at least three components for hot runner nozzle - Google Patents

Tip assembly having at least three components for hot runner nozzle Download PDF

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Publication number
CA2462311A1
CA2462311A1 CA002462311A CA2462311A CA2462311A1 CA 2462311 A1 CA2462311 A1 CA 2462311A1 CA 002462311 A CA002462311 A CA 002462311A CA 2462311 A CA2462311 A CA 2462311A CA 2462311 A1 CA2462311 A1 CA 2462311A1
Authority
CA
Canada
Prior art keywords
tip
nozzle
nozzle body
piece
mold component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002462311A
Other languages
French (fr)
Other versions
CA2462311C (en
Inventor
George T. Olaru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mold Masters 2007 Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27171598&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2462311(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to CA2462311A priority Critical patent/CA2462311C/en
Publication of CA2462311A1 publication Critical patent/CA2462311A1/en
Application granted granted Critical
Publication of CA2462311C publication Critical patent/CA2462311C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/278—Nozzle tips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C2045/2761—Seals between nozzle and mould or gate

Abstract

A nozzle for an injection molding apparatus is provided. The injection moldi ng apparatus has a mold component that defines a mold cavity and a gate into th e mold cavity. The nozzle includes a nozzle body, a heater, a tip, a tip surrounding piece and a mold component contacting piece. The nozzle body defines a nozzle body melt passage therethrough, that is adapted to receive melt from a melt source. The heater is thermally connected to the nozzle bod y for heating melt in the nozzle body. The tip defines a tip melt passage therethrough, that is downstream from the nozzle body melt passage, and that is adapted to be upstream from the gate. The tip surrounding piece is removably connected with respect to said nozzle body. The mold component contacting piece is connected with respect to the nozzle body. The material of the mold component contacting piece has a thermal conductivity that is less than at least one of the thermal conductivity of the material of the tip and the thermal conductivity of the material of the tip surrounding piece.</SDOA B>

Claims (36)

1. A nozzle for an injection molding apparatus, the injection molding apparatus having a mold component, the mold component defining a mold cavity, and defining a gate into the mold cavity, the nozzle comprising:
a nozzle body, said nozzle body defining a nozzle body melt passage therethrough, wherein said nozzle body melt passage is adapted to receive melt from a melt source;
a heater that is thermally connected to said nozzle body for heating melt in said nozzle body;
a tip, said tip defining a tip melt passage therethrough, wherein said tip melt passage is downstream from and in fluid communication with the nozzle body melt passage, and said tip melt passage is adapted to be upstream from and in fluid communication with said gate;
a tip surrounding piece that is connected with respect to said nozzle body; and a mold component contacting piece that is connected with respect to said nozzle body, wherein the material of said mold component contacting piece has a thermal conductivity that is less than at least one of the thermal conductivity of the material of said tip and the thermal conductivity of the material of the tip surrounding piece.
2. A nozzle as claimed in claim 1, wherein the thermal conductivity of the material of said mold component contacting piece is less than the thermal conductivity of the material of said tip.
3. A nozzle as claimed in claim 1, wherein the thermal conductivity of the material of the mold component contacting piece is less than the thermal conductivity of the material of said tip surrounding piece.
4. A nozzle as claimed in claim 1, wherein the thermal conductivity of the material of the tip is generally equal to the thermal conductivity of the material of the tip surrounding piece.
5. A nozzle as claimed in claim 1, wherein said tip surrounding piece is removably connected with respect to said nozzle body.
6. A nozzle as claimed in claim 1, wherein said tip surrounding piece is connected to said nozzle body.
7. A nozzle as claimed in claim 1, wherein said tip surrounding piece is removably connected to said nozzle body.
8. A nozzle as claimed in claim 1, wherein said tip surrounding piece has a tip surrounding piece threaded portion and said nozzle body has a nozzle body threaded portion that is adapted to mate with said tip surrounding piece threaded portion.
9. A nozzle as claimed in claim 1, wherein said tip surrounding piece retains said tip in position.
10. A nozzle as claimed in claim 1, wherein said tip is removably connected to said nozzle body.
11. A nozzle as claimed in claim 9, wherein said tip is positioned within a bore in said nozzle body.
12. A nozzle as claimed in claim 1, wherein said tip has a tip threaded portion and said nozzle body has a nozzle body threaded portion that is adapted to mate with said tip threaded portion.
13. A nozzle as claimed in claim 1, wherein said mold component contacting piece is adapted to align said nozzle with respect to said gate.
14. A nozzle as claimed in claim 1, wherein a chamber is formed between said tip and said gate when said nozzle is positioned to deliver melt to said gate, and said mold component contacting piece is adapted to inhibit leakage of melt from said chamber.
15. A nozzle as claimed in claim 1, wherein said mold component contacting piece is connected to said tip.
16. A nozzle as claimed in claim 1, wherein said mold component contacting piece is connected to said tip surrounding piece.
17. A nozzle as claimed in claim 1, wherein said mold component contacting piece is connected to said nozzle body.
18. A nozzle as claimed in claim 1, wherein said mold component contacting piece is adapted to align said nozzle with respect to said gate, and said nozzle further comprises a second mold component contacting piece that is adapted to inhibit leakage of melt from a chamber that is formed between said tip and said gate, when said nozzle is positioned to deliver melt to said gate in said mold component.
19. An injection molding apparatus, comprising:
a runner component, a mold component and at least one nozzle, wherein said runner component defines at least one runner, and said at least one runner is adapted to receive melt from a melt source, wherein said mold component defines a mold cavity and a gate into said mold cavity, wherein said nozzle includes a nozzle body, a heater, a tip, a tip surrounding piece and a mold component contacting piece, wherein said nozzle body defines a nozzle body melt passage therethrough, and said nozzle body melt passage is adapted to receive melt from said at least one runner, wherein said heater is thermally connected to said nozzle body for heating melt in said nozzle body, wherein said tip defines a tip melt passage therethrough, said tip melt passage is downstream from and in fluid communication with the nozzle body melt passage, and said tip melt passage is upstream from and in fluid communication with said gate, wherein said tip surrounding piece is removably connected with respect to said nozzle body, wherein said mold component contacting piece is connected with respect to said nozzle body, and wherein the material of said mold component contacting piece has a thermal conductivity that is less than at least one of the thermal conductivity of the material of said tip and the thermal conductivity of the material of the tip surrounding piece.
20. An injection molding apparatus as claimed in claim 19, wherein the thermal conductivity of the material of said mold component contacting piece is less than the thermal conductivity of the material of said tip.
21. An injection molding apparatus as claimed in claim 19, wherein the thermal conductivity of the material of the mold component contacting piece is less than the thermal conductivity of the material of said tip surrounding piece.
22. An injection molding apparatus as claimed in claim 19, wherein the thermal conductivity of the material of the tip is generally equal to the thermal conductivity of the material of the tip surrounding piece.
23. An injection molding apparatus as claimed in claim 19, wherein said tip surrounding piece is removably connected with respect to said nozzle body.
24. An injection molding apparatus as claimed in claim 19, wherein said tip surrounding piece is connected to said nozzle body.
25. An injection molding apparatus as claimed in claim 19, wherein said tip surrounding piece is removably connected to said nozzle body.
26. An injection molding apparatus as claimed in claim 19, wherein said tip surrounding piece has a tip surrounding piece threaded portion and said nozzle body has a nozzle body threaded portion that is adapted to mate with said tip surrounding piece threaded portion.
27. An injection molding apparatus as claimed in claim 19, wherein said tip surrounding piece retains said tip in position.
28. A nozzle as claimed in claim 19, wherein said tip is removably connected to said nozzle body.
29. A nozzle as claimed in claim 27, wherein said tip is positioned within a bore in said nozzle body.
30. An injection molding apparatus as claimed in claim 19, wherein said tip has a tip threaded portion and said nozzle body has a nozzle body threaded portion that is adapted to mate with said tip threaded portion.
31. An injection molding apparatus as claimed in claim 19, wherein said mold component contacting piece aligns said nozzle with respect to said gate.
32. An injection molding apparatus as claimed in claim 19, wherein said mold component contacting piece is adapted to inhibit leakage of melt from a chamber that is formed between said tip and said gate.
33. An injection molding apparatus as claimed in claim 19, wherein said mold component contacting piece is connected to said tip.
34. An injection molding apparatus as claimed in claim 19, wherein said mold component contacting piece is connected to said tip surrounding piece.
35. An injection molding apparatus as claimed in claim 19, wherein said mold component contacting piece is connected to said nozzle body.
36. An injection molding apparatus as claimed in claim 19, wherein said mold component contacting piece is adapted to align said nozzle with respect to said gate, and said nozzle further includes a second mold component contacting piece that is adapted to inhibit leakage of melt from a chamber that is formed between said tip and said gate.
CA2462311A 2001-10-03 2002-10-02 Tip assembly having at least three components for hot runner nozzle Expired - Lifetime CA2462311C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2462311A CA2462311C (en) 2001-10-03 2002-10-02 Tip assembly having at least three components for hot runner nozzle

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CA002358148A CA2358148A1 (en) 2001-10-03 2001-10-03 A nozzle
CA2,358,148 2001-10-03
US34663202P 2002-01-10 2002-01-10
US60/346,632 2002-01-10
US35617002P 2002-02-14 2002-02-14
US60/356,170 2002-02-14
CA2462311A CA2462311C (en) 2001-10-03 2002-10-02 Tip assembly having at least three components for hot runner nozzle
PCT/CA2002/001488 WO2003028974A1 (en) 2001-10-03 2002-10-02 Tip assembly having at least three components for hot runner nozzle

Publications (2)

Publication Number Publication Date
CA2462311A1 true CA2462311A1 (en) 2003-04-10
CA2462311C CA2462311C (en) 2010-12-14

Family

ID=27171598

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002358148A Abandoned CA2358148A1 (en) 2001-10-03 2001-10-03 A nozzle
CA2462311A Expired - Lifetime CA2462311C (en) 2001-10-03 2002-10-02 Tip assembly having at least three components for hot runner nozzle

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002358148A Abandoned CA2358148A1 (en) 2001-10-03 2001-10-03 A nozzle

Country Status (7)

Country Link
US (6) US6921257B2 (en)
EP (2) EP2080604B2 (en)
CN (2) CN100349719C (en)
AT (2) ATE430649T1 (en)
CA (2) CA2358148A1 (en)
DE (1) DE60232261D1 (en)
WO (1) WO2003028974A1 (en)

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US6971869B2 (en) 2005-12-06
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US20040265417A1 (en) 2004-12-30
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US7891969B2 (en) 2011-02-22
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US20100028481A1 (en) 2010-02-04
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EP2080604B2 (en) 2020-04-01
US20050106283A1 (en) 2005-05-19

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