GB1371262A - Injection moulding apparatus - Google Patents

Injection moulding apparatus

Info

Publication number
GB1371262A
GB1371262A GB863172A GB863172A GB1371262A GB 1371262 A GB1371262 A GB 1371262A GB 863172 A GB863172 A GB 863172A GB 863172 A GB863172 A GB 863172A GB 1371262 A GB1371262 A GB 1371262A
Authority
GB
United Kingdom
Prior art keywords
passage
valve
cavity
injection moulding
pressure
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
GB863172A
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 GB1371262A publication Critical patent/GB1371262A/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
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems

Abstract

1371262 Injection moulding machines H J DRAZICK 24 Feb 1972 [25 Feb 1971] 8631/72 Heading B5A Injection moulding apparatus comprises upper and lower die plates 32, 18 and at least one die cavity 36 therein, a first material feed passage 50 in one of the die plates, a second passage 66 between the first passage and the die cavity, the first passage 50 intersecting the second passage 66, and valve means 76 in the second passage controlling an orifice 70 leading into the cavity 36 in response to a pressure differential the valve means including a bore and heating means 84 disposed within the bore to maintain the moulding material in a fluid condition. The pressure of material injected through an orifice 48 and passages 50, 66 opens the valve 76, and when the injection pressure is reduced the valve 76 is closed again by a spring 82. The valve 76 includes a needle tip portion 104 which may extend a minimal distance into the cavity 36. Electric heaters 60 and 84 are provided in the passage 50 and within the valve 76 respectively. Modifications.-Figure 1A (not shown) shows a modified head portion of the valve member (78a) and closure plug (74a) incorporating a plurality of dished spring members (87). Instead of being arranged vertically, the valve assembly 66-76 may be mounted at an angle to the vertical (Fig. 5, not shown).
GB863172A 1971-02-25 1972-02-24 Injection moulding apparatus Expired GB1371262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11868871A 1971-02-25 1971-02-25

Publications (1)

Publication Number Publication Date
GB1371262A true GB1371262A (en) 1974-10-23

Family

ID=22380143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB863172A Expired GB1371262A (en) 1971-02-25 1972-02-24 Injection moulding apparatus

Country Status (8)

Country Link
JP (1) JPS5351902Y2 (en)
BE (1) BE779786A (en)
CA (1) CA1019511A (en)
DE (1) DE2208797C3 (en)
FR (1) FR2126391B1 (en)
GB (1) GB1371262A (en)
IT (1) IT948700B (en)
SE (1) SE381216B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126521A (en) * 1982-09-03 1984-03-28 Rotfil Srl Cartridge heater for a hot-runner injection distributor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK138213B (en) * 1975-10-10 1978-07-31 Eduard Freddy Flygenring Needle valve with needle for injection nozzles for plastic molds.
FR2548581B1 (en) * 1983-06-13 1986-04-18 Manceau Marcel PLASTIC THERMOPOINTE DIRECT INJECTION DEVICE IN A MOLD
WO1990009876A1 (en) * 1989-02-23 1990-09-07 Kurt Paul Cuttat Gate pin and unit for injection moulds which incorporates said gate pin
FR2681813A1 (en) * 1991-09-26 1993-04-02 Mecaplast Sa Injection nozzle element for a mould

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828507A (en) * 1953-12-07 1958-04-01 Stokes F J Corp Injection molding press having valved gate
FR1375670A (en) * 1962-03-05 1964-10-23 Injection molding process and apparatus for carrying out said process
GB953965A (en) * 1962-08-13 1964-04-02 Honda Motor Co Ltd Improvements in or relating to injection moulding machines
US3189948A (en) * 1962-09-14 1965-06-22 Osley & Whitney Inc Internally heated cold manifold mold
US3491408A (en) * 1967-10-13 1970-01-27 Apl Corp Valve adjuster and stop mechanism for an injection molding machine
IL34598A (en) * 1969-06-07 1974-03-14 Katashi Aoki An injection molding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126521A (en) * 1982-09-03 1984-03-28 Rotfil Srl Cartridge heater for a hot-runner injection distributor

Also Published As

Publication number Publication date
FR2126391B1 (en) 1976-03-05
CA1019511A (en) 1977-10-25
FR2126391A1 (en) 1972-10-06
BE779786A (en) 1972-08-24
JPS5351902Y2 (en) 1978-12-12
DE2208797A1 (en) 1972-08-31
DE2208797C3 (en) 1981-05-14
SE381216B (en) 1975-12-01
JPS5329774U (en) 1978-03-14
DE2208797B2 (en) 1980-09-18
IT948700B (en) 1973-06-11

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee