GB635991A - Improvements in or relating to injection moulding apparatus - Google Patents

Improvements in or relating to injection moulding apparatus

Info

Publication number
GB635991A
GB635991A GB3553546A GB3553546A GB635991A GB 635991 A GB635991 A GB 635991A GB 3553546 A GB3553546 A GB 3553546A GB 3553546 A GB3553546 A GB 3553546A GB 635991 A GB635991 A GB 635991A
Authority
GB
United Kingdom
Prior art keywords
chamber
pressure
melting
low
melting chamber
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
GB3553546A
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
Priority to GB3553546A priority Critical patent/GB635991A/en
Publication of GB635991A publication Critical patent/GB635991A/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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • 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
    • B29C45/72—Heating or cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

635,991. Injection-moulding machines. VLTAVSKY, V. Nov. 30, 1946, No. 35535. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 30, 1946] [Class 87 (ii)] The melting chamber 12 is filled with material by means of a plunger 10 that forces the material from a pre-melting smaller chamber 4 past a non- return valve 13, and then the melting chamber and mould 18 are raised, the chamber telescoping over an extension 11 of the pre-melting chamber, this extension thus serving as a plunger and forcing material from the melting chamber through a valve 17 into the mould. The melting chamber is raised by hydraulic pistons 15 operated by a highpressure accumulator. During filling of the melting chamber the pressure below the pistons 15 is maintained low or at atmospheric pressure ; when the pressure is maintained low, it compensates for the weight of the chamber 12, and when it is atmospheric the weight of the chamber is taken by stops (not shown). During low pressure periods the pistons are coupled to a low-pressure accumulator. This change over from high pressure to low may be effected by manual or automatic (e.g. cam) means. Both chambers are heated, and the hopper 2 is heated by means of a jacket 22. The hopper outlet 7 may have an obturator which is opened by ascent of piston 10. In the Specification as open to inspection under Sect. 91, the drawings show an apparatus the premelting chamber of which is larger than the lowermelting chamber. This subject-matter does not appear in the Specification as accepted.
GB3553546A 1946-11-30 1946-11-30 Improvements in or relating to injection moulding apparatus Expired GB635991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3553546A GB635991A (en) 1946-11-30 1946-11-30 Improvements in or relating to injection moulding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3553546A GB635991A (en) 1946-11-30 1946-11-30 Improvements in or relating to injection moulding apparatus

Publications (1)

Publication Number Publication Date
GB635991A true GB635991A (en) 1950-04-19

Family

ID=10378808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3553546A Expired GB635991A (en) 1946-11-30 1946-11-30 Improvements in or relating to injection moulding apparatus

Country Status (1)

Country Link
GB (1) GB635991A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896257A (en) * 1955-11-21 1959-07-28 Nat Automatic Tool Company Inc Injection molding machine
US2914804A (en) * 1954-06-28 1959-12-01 Projectile And Engineering Com Injection moulding apparatus
US3032810A (en) * 1960-06-02 1962-05-08 Owens Illinois Glass Co Method and apparatus for forming hollow plastic articles
US20130344188A1 (en) * 2011-03-12 2013-12-26 Husky Injection Molding Systmes Ltd. Plasticating and Injection Device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914804A (en) * 1954-06-28 1959-12-01 Projectile And Engineering Com Injection moulding apparatus
US2896257A (en) * 1955-11-21 1959-07-28 Nat Automatic Tool Company Inc Injection molding machine
US3032810A (en) * 1960-06-02 1962-05-08 Owens Illinois Glass Co Method and apparatus for forming hollow plastic articles
US20130344188A1 (en) * 2011-03-12 2013-12-26 Husky Injection Molding Systmes Ltd. Plasticating and Injection Device
US8870563B2 (en) * 2011-03-12 2014-10-28 Husky Injection Molding Systems Ltd. Plasticating and injection device

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