GB1271543A - Slidable hot runner for injection molds - Google Patents

Slidable hot runner for injection molds

Info

Publication number
GB1271543A
GB1271543A GB2503769A GB2503769A GB1271543A GB 1271543 A GB1271543 A GB 1271543A GB 2503769 A GB2503769 A GB 2503769A GB 2503769 A GB2503769 A GB 2503769A GB 1271543 A GB1271543 A GB 1271543A
Authority
GB
United Kingdom
Prior art keywords
tubular member
stem
mould
sprue bushing
hot runner
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.)
Expired
Application number
GB2503769A
Inventor
Ladislao Wladyslawi Putkowski
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.)
Individual
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
Application filed by Individual filed Critical Individual
Publication of GB1271543A publication Critical patent/GB1271543A/en
Expired 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
    • 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
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • 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
    • B29C2045/2774—The nozzle head or the collar portion and central portion being made of different parts or materials
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

1,271,543. Injection moulds. L. W. PUTKOWSKI. 16 May, 1969 [23 May, 1968], No. 25037/69. Heading B5A. A hot runner system for an injection mould comprises first and second members 16 and 28 with bores 20 and 36 respectively interconnected by a heated tubular member 30 which has a snug sliding fit with one of the bored members 16, 28, so as to allow for thermal expansion of the tubular member 30. As shown, the member 28 comprises a gate 26 leading to a mould cavity 6 between mould plates 2, 4. The member 28 is a sliding fit in the plate 2. The tubular member 30 is L-shaped and has one end threaded into the member 28. The other end 32 of the member 30 slides in a radial bore 20 in a sprue bushing 16 having an inlet bore 18. The tubular member 30 is surrounded by heating elements 40, 42. Cooling water flows through channels (not shown) in mould plate 2. Inside the end 34 of the tubular member 30 is a stem 48 having an axial bore 49 and three spaced outlet passages 50 directing material into a space 50a between a stem tip 51 and the member 28. Modifications.-In Fig. 3 (not shown), the stem (48<SP>1</SP>) is movable to open and close the gate (26<SP>1</SP>) by means of an annular pneumatic piston (72). In Fig. 5 (not shown) the stem (48<SP>11</SP>) is biased to closed position by a coil spring (90), and is opened by pressure of injected material. Instead of being L-shaped, the tubular member may be straight as at (100) in Fig. 9 (not shown). In Fig. 10, the tubular member 116 and sprue bushing 120 have equal diameter bores 122 and 124, a yieldable seal 126 being provided therebetween. Alternatively, the tubular member 116 may be of such length as to expand, on heating, to eliminate the gap between it and the sprue bushing.
GB2503769A 1968-05-23 1969-05-16 Slidable hot runner for injection molds Expired GB1271543A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA20695 1968-05-23

Publications (1)

Publication Number Publication Date
GB1271543A true GB1271543A (en) 1972-04-19

Family

ID=4084259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2503769A Expired GB1271543A (en) 1968-05-23 1969-05-16 Slidable hot runner for injection molds

Country Status (2)

Country Link
CA (1) CA875061A (en)
GB (1) GB1271543A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335291A1 (en) * 1983-09-29 1985-04-18 EWIKON Entwicklung und Konstruktion GmbH & Co KG, 4900 Herford HOT CHANNEL TOOL FOR FEEDING A PLASTIC MELT TO AN INJECTION MOLD
WO2005018906A1 (en) * 2003-08-13 2005-03-03 Günther Heisskanaltechnik Gmbh Injection molding nozzle
WO2007051857A2 (en) * 2005-11-04 2007-05-10 Delachaux S.A. Thermoplastic material injection moulding device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1011516A (en) * 1973-07-13 1977-06-07 Du Pont Of Canada Limited Balanced runner system for injection moulding apparatus
CA1136814A (en) * 1980-07-15 1982-12-07 Jobst U. Gellert Hot tip seal

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335291A1 (en) * 1983-09-29 1985-04-18 EWIKON Entwicklung und Konstruktion GmbH & Co KG, 4900 Herford HOT CHANNEL TOOL FOR FEEDING A PLASTIC MELT TO AN INJECTION MOLD
WO2005018906A1 (en) * 2003-08-13 2005-03-03 Günther Heisskanaltechnik Gmbh Injection molding nozzle
EP2133189A3 (en) * 2003-08-13 2010-08-25 Günther Heisskanaltechnik GmbH Injection molding nozzle
US7841855B2 (en) 2003-08-13 2010-11-30 Gunther Heisskanaltechnik Gmbh Injection molding nozzle
WO2007051857A2 (en) * 2005-11-04 2007-05-10 Delachaux S.A. Thermoplastic material injection moulding device
FR2892968A1 (en) * 2005-11-04 2007-05-11 Creations Nivernaises E C N Sa DEVICE FOR INJECTING-MOLDING A THERMOPLASTIC MATERIAL
WO2007051857A3 (en) * 2005-11-04 2007-08-30 Delachaux Sa Thermoplastic material injection moulding device

Also Published As

Publication number Publication date
CA875061A (en) 1971-07-06

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