CA2455514A1 - Injection molding apparatus having an elongated nozzle incorporating multiple nozzle bodies in tandem - Google Patents

Injection molding apparatus having an elongated nozzle incorporating multiple nozzle bodies in tandem Download PDF

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Publication number
CA2455514A1
CA2455514A1 CA002455514A CA2455514A CA2455514A1 CA 2455514 A1 CA2455514 A1 CA 2455514A1 CA 002455514 A CA002455514 A CA 002455514A CA 2455514 A CA2455514 A CA 2455514A CA 2455514 A1 CA2455514 A1 CA 2455514A1
Authority
CA
Canada
Prior art keywords
injection molding
molding apparatus
nozzle
nozzle body
downstream
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
CA002455514A
Other languages
French (fr)
Other versions
CA2455514C (en
Inventor
Hans Hagelstein
Andreas Schrom
Denis Babin
Gino Colonico
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
Mold Masters 2007 Ltd
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
Application filed by Mold Masters 2007 Ltd filed Critical Mold Masters 2007 Ltd
Publication of CA2455514A1 publication Critical patent/CA2455514A1/en
Application granted granted Critical
Publication of CA2455514C publication Critical patent/CA2455514C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C2045/2717—Reconfigurable runner channels
    • 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
    • B29C2045/2762—Seals between nozzle and manifold
    • 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
    • B29C2045/2796—Axially movable nozzles or nozzle tips
    • B29C2045/2798—Axially movable nozzles or nozzle tips for compensating thermal expansion
    • 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
    • B29C45/2737—Heating or cooling means therefor
    • 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

Abstract

The present invention generally relates to an injection molding apparatus, comprising a manifold including a plurality of manifold channels and a plurality of nozzles. Each of the nozzles defines a nozzle channel in fluid communication with one of the manifold channels and including a plurality of nozzle bodies coupled in tandem by a removable and secure connection. The nozzle bodies include at least a upstream nozzle body and a downstream nozzle body. The upstream nozzle body has an upstream end adjacent said manifold channel, and the downstream nozzle body has a downstream end adjacent a mold plate. A removable nozzle tip is retained in a downstream end of each downstream nozzle body. The nozzles also include a plurality of heaters, wherein at least one heater is embedded into each nozzle body.

Claims (34)

1. An injection molding apparatus, comprising:
a hot runner manifold including at least two manifold channels;
at least two nozzles, each of said nozzles defining a nozzle channel in fluid communication with one of said manifold channels;
at least one of said nozzles including at least two nozzle bodies removably fastened in tandem, including at least an upstream nozzle body, having an upstream end adjacent said manifold channel, and a downstream nozzle body, having a downstream end adjacent a maid plate;
a separate and removable nozzle tip retained in a downstream end of said downstream nozzle body.
2. The injection molding apparatus of claim 1, wherein said nozzle bodies are removable fastened via a threaded connection.
3. The injection molding apparatus of claim 2, wherein said threaded connection includes a first set of threads and a second set of threads, wherein said first set of threads are a material different from said second set of threads.
4. The injection molding apparatus of claim 2, wherein at least one of said upstream nozzle body or said downstream nozzle body includes threads made from a material different from said nozzle bodies.
5. The injection molding apparatus of claim 2, wherein said threaded connection is via a spacer having a first end threaded with a first nozzle body and a second end threaded with a second nozzle body.
6. The injection molding apparatus of claim 5, wherein said spacer is a different material than said first and said second nozzle bodies.
7. The injection molding apparatus of claim 1, wherein at least one of said nozzles includes an intermediate nozzle body, wherein an upstream end of said intermediate nozzle body is removably fastened to said downstream end of said upstream nozzle body and said downstream end of said intermediate nozzle body is removably fastened to said upstream end of said downstream nozzle body.
8. The injection molding apparatus of claim 1, wherein said nozzle tip is retained in said downstream nozzle body by removably fastened connection.
9. The injection molding apparatus of claim 8, wherein said nozzle tip is retained in said downstream nozzle body via a threaded connection.
10. The injection molding apparatus of claim 1, wherein each of said nozzle bodies includes a heater attached thereto.
11. The injection molding apparatus of claim 10, wherein said nozzle tip does not have a heater attached directly thereto.
12. The injection molding apparatus of claim 1, wherein said upstream end of said upstream nozzle body is coupled to said manifold via a threaded connection.
13. The injection molding apparatus of claim 1, wherein said upstream end of said upstream nozzle body is slidably connected with said manifold.
14. The injection molding apparatus of claim 1, wherein at least one of said plurality of nozzles includes a valve pin and an actuator for extending and retracting said valve pin.
15. The injection molding apparatus of claim 14, wherein said at least one of said plurality of nozzles includes at least one valve pin guide.
16. The injection molding apparatus of claim 14, wherein a pin support is disposed between an upstream end of said upstream nozzle body and said hot runner manifold.
17. The injection molding apparatus of claim 1, wherein said nozzle tip is made from a different material than said plurality of nozzle bodies.
18. The injection molding apparatus of claim 17, wherein said nozzle tip comprises a material having a high thermal conductivity.
19. The injection molding apparatus of claim 1, further comprising a split mold plate, including a plurality of mold plates.
20. The injection molding apparatus of claim 1, wherein said nozzle tip includes an extended portion that is slidable within a bore in said mold plate.
21. An injection molding apparatus, comprising:
a manifold defining at least two manifold channels;
at least two nozzles, each of said nozzles defining a nozzle channel in fluid communication with one of said manifold channels;
at least one of said nozzles including at least two nozzle bodies, including an upstream nozzle body and a downstream nozzle body coupled in tandem via a removably fastened connection, arid a nozzle tip disposed in a downstream end of said downstream nozzle body;

wherein each of said nozzle bodies includes at least one heater attached thereto and wherein each of said nozzle tips does not have a separate heater connected directly thereto.
22. The injection molding apparatus of claim 21, wherein each of said nozzle bodies has a first heater at least partially embedded therein.
23. The injection molding apparatus of claim 22, wherein each of said nozzle bodies includes at least two heaters.
24. The injection molding apparatus of claim 23, wherein each of said nozzle bodies includes a second heater at least partially embedded therein.
25. The injection molding apparatus of claim 23, wherein each of said nozzle bodies includes a second heater embedded in a heating band coupled to said nozzle body.
26. An injection molding apparatus, comprising:
a manifold defining at least two manifold channels;
at least two nozzles, each of said nozzles defining a nozzle channel in fluid communication with one of said manifold channels;
at least one of said nozzle including at least two nozzle bodies, including at least a upstream nozzle body and a downstream nozzle body removably fastened in tandem;
wherein each of said nozzle bodies includes at least a first heater and a second heater, wherein at least said first heater is embedded into said nozzle body.
27. The injection molding apparatus of claim 26, wherein said second heater is embedded in a heating band surrounding an outside surface of said nozzle body.
28. The injection molding apparatus of claim 27, wherein said heating band comprises a material having a high thermal conductivity.
29. The injection molding apparatus of claim 26, wherein each of said first heater and said second heater have separate electrical connections extending therefrom.
30. The injection molding apparatus of claim 26, wherein said downstream nozzle body includes an electrical connection for at least one of said first and second heaters with leads exiting said injection molding apparatus through a bore between a first and second mold plate.
31. The injection molding apparatus of claim 26, wherein said downstream nozzle body includes an electrical connection for at least one of said first and second heaters with leads drawn along an opening in a mold plate into which said nozzle is inserted.
32. The injection molding apparatus of claim 26, wherein a nozzle tip is disposed in a downstream end of said downstream nozzle body;
33. The injection molding apparatus of claim 32, wherein said nozzle tip is not heated by a separate heater attached directly thereto.
34. The injection molding apparatus of claim 26, wherein both said first heater and said second heater are embedded in said nozzle body.
CA2455514A 2004-01-06 2004-01-21 Injection molding apparatus having an elongated nozzle incorporating multiple nozzle bodies in tandem Expired - Lifetime CA2455514C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/751,507 2004-01-06
US10/751,507 US7160100B2 (en) 2004-01-06 2004-01-06 Injection molding apparatus having an elongated nozzle incorporating multiple nozzle bodies in tandem

Publications (2)

Publication Number Publication Date
CA2455514A1 true CA2455514A1 (en) 2005-07-06
CA2455514C CA2455514C (en) 2011-11-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2455514A Expired - Lifetime CA2455514C (en) 2004-01-06 2004-01-21 Injection molding apparatus having an elongated nozzle incorporating multiple nozzle bodies in tandem

Country Status (5)

Country Link
US (2) US7160100B2 (en)
CN (1) CN100532058C (en)
CA (1) CA2455514C (en)
DE (1) DE102004001665B4 (en)
IT (1) ITTO20040593A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9174372B2 (en) 2013-03-15 2015-11-03 Sabic Global Technologies B.V. Shut off nozzle system and methods for making and using the same

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US9174372B2 (en) 2013-03-15 2015-11-03 Sabic Global Technologies B.V. Shut off nozzle system and methods for making and using the same

Also Published As

Publication number Publication date
CA2455514C (en) 2011-11-29
ITTO20040593A1 (en) 2004-12-09
US20050147713A1 (en) 2005-07-07
CN100532058C (en) 2009-08-26
CN1636696A (en) 2005-07-13
DE102004001665B4 (en) 2014-07-10
DE102004001665A1 (en) 2005-08-04
US7160100B2 (en) 2007-01-09
USRE41536E1 (en) 2010-08-17

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