CA2555897A1 - Heating cylinder for attachment to an injection nozzle for an injection molding system - Google Patents

Heating cylinder for attachment to an injection nozzle for an injection molding system Download PDF

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Publication number
CA2555897A1
CA2555897A1 CA 2555897 CA2555897A CA2555897A1 CA 2555897 A1 CA2555897 A1 CA 2555897A1 CA 2555897 CA2555897 CA 2555897 CA 2555897 A CA2555897 A CA 2555897A CA 2555897 A1 CA2555897 A1 CA 2555897A1
Authority
CA
Canada
Prior art keywords
heating
heating cylinder
molding system
heat conductor
injection molding
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
CA 2555897
Other languages
French (fr)
Other versions
CA2555897C (en
Inventor
Juergen Emich
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.)
Incoe Corp
Original Assignee
Incoe Corp
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 Incoe Corp filed Critical Incoe Corp
Priority to CA002555897A priority Critical patent/CA2555897C/en
Publication of CA2555897A1 publication Critical patent/CA2555897A1/en
Application granted granted Critical
Publication of CA2555897C publication Critical patent/CA2555897C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B29C45/2737—Heating or cooling means therefor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • 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
    • B29C2045/2743—Electrical heating element constructions
    • 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
    • B29C2045/2754—Plurality of independent heating or cooling means, e.g. independently controlling the heating of several zones of the nozzle

Abstract

A hollow heating cylinder for attachment to an injection nozzle for an injection molding system. An elongated heating cartridge is spirally wound on the outside of the cylinder. The heating cartridge contains two electrically heatable heat conductors which are electrically separated from one another and are located in different regions in the longitudinal direction of the heating cartridge.
One heat conductor is positioned for heating the mouth region of the nozzle and the other heat conductor is positioned for heating the shank region of the nozzle.

Claims (13)

1. A hollow heating cylinder for attachment to an injection nozzle for an injection molding system, the heating cylinder having an elongated heating cartridge wound spirally around the outside thereof, said heating cartridge having a first and a second electrically heatable heat conductor, said heat conductors being electrically separated from one another and being located in substantially different regions in the longitudinal direction of said heating cartridge, said first heat conductor being positioned for heating the mouth region of an injection nozzle and said second heat conductor being positioned for heating the shank region of an injection nozzle.
2. The hollow heating cylinder according to Claim 1, wherein said first and second heat conductors have electrical connections which are positioned at the end of the heating cartridge opposite to said first heat conductor.
3. The hollow heating cylinder according to Claim 1 wherein said heat conductors comprise spiral heating coils.
4. The heating cylinder according to Claim 1 wherein said heating cartridge is positioned in a spiral groove on the outside surface of said heating cylinder.
5. The heating cylinder according to Claim 4, wherein said spiral groove in the region adjacent said first heat conductor has a smaller pitch than in the remaining region.
6. The heating cylinder according to Claim 1 further comprising an outer protective jacket surrounding said heating cylinder.
7. The heating cylinder according to claim 6 further comprising longitudinal grooves in said protective jacket for positioning temperature sensors for the mouth and shank regions of the nozzles.
8. An injection molding system comprising at least one mold tool and at least one injection nozzle, the improvement comprising a hollow heating cylinder positioned on said injection nozzle, said hollow heating cylinder having a body member and an elongated heating cartridge spirally would around said body member, said heating cartridge having a first heat conductor and a second heat conductor positioned therein, said first and second heat conductors located in different regions in the longitudinal direction of said body member.
9. The injection molding system according to claim 8 wherein said body member has a spiral groove on the outer surface and said elongated heating cartridge is positioned on said spiral groove.
10. The injection molding system according to claim 9 wherein said spiral groove has a first pitch for positioning of said first heat conductor and a second pitch different than said first pitch for positioning of said second heat conductor.
11. The injection molding system according to claim 9 wherein said first and second heat conductors each comprise spiral heating coils.
12. The injection molding system according to claim 8 further comprising a jacket member positioned over said hollow heating cylinder.
13. The injection molding system according to claim 12 further comprising temperature sensor members positioned in said jacket member.
CA002555897A 2006-08-08 2006-08-08 Heating cylinder for attachment to an injection nozzle for an injection molding system Active CA2555897C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002555897A CA2555897C (en) 2006-08-08 2006-08-08 Heating cylinder for attachment to an injection nozzle for an injection molding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002555897A CA2555897C (en) 2006-08-08 2006-08-08 Heating cylinder for attachment to an injection nozzle for an injection molding system

Publications (2)

Publication Number Publication Date
CA2555897A1 true CA2555897A1 (en) 2008-02-08
CA2555897C CA2555897C (en) 2010-02-02

Family

ID=39030931

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002555897A Active CA2555897C (en) 2006-08-08 2006-08-08 Heating cylinder for attachment to an injection nozzle for an injection molding system

Country Status (1)

Country Link
CA (1) CA2555897C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022051352A1 (en) * 2020-09-03 2022-03-10 Saudi Arabian Oil Company Aqueous flash treatment in well applications

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022051352A1 (en) * 2020-09-03 2022-03-10 Saudi Arabian Oil Company Aqueous flash treatment in well applications

Also Published As

Publication number Publication date
CA2555897C (en) 2010-02-02

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