FR2225271A1 - Injection moulding nozzle with integral ejection ram - esp. used for deep mouldings of expanded polystyrene - Google Patents

Injection moulding nozzle with integral ejection ram - esp. used for deep mouldings of expanded polystyrene

Info

Publication number
FR2225271A1
FR2225271A1 FR7313100A FR7313100A FR2225271A1 FR 2225271 A1 FR2225271 A1 FR 2225271A1 FR 7313100 A FR7313100 A FR 7313100A FR 7313100 A FR7313100 A FR 7313100A FR 2225271 A1 FR2225271 A1 FR 2225271A1
Authority
FR
France
Prior art keywords
ejector
tube
ram
esp
expanded polystyrene
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.)
Withdrawn
Application number
FR7313100A
Other languages
French (fr)
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.)
DUCRUEZ RAYMOND FR
Original Assignee
DUCRUEZ RAYMOND FR
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 DUCRUEZ RAYMOND FR filed Critical DUCRUEZ RAYMOND FR
Priority to FR7313100A priority Critical patent/FR2225271A1/en
Publication of FR2225271A1 publication Critical patent/FR2225271A1/en
Withdrawn legal-status Critical Current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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/442—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with mechanical ejector or drive 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C2045/4089—Hollow articles retained in the female mould during mould opening
    • 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
    • B29C2045/538—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston the plunger being part of the mould cavity wall after injection

Landscapes

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

Abstract

Base of a cavity tool for moulding plastics, esp. expanded polystyrene, is fitted with an ejector plug backed by a tube on a spring loaded base which can be moved by an ejector plate. The ejector plug accommodates a coaxial plunger which can be retracted, viz hydraulically. Retraction of the ram allows feedstock beads to be injected from a hopper via an oblique entry into the mouth of the ejector thrust tube. The ram housing and the entry tube move in common with the ejector tube. The ram movement and matl. injection may use a common pressure source. The device allows both injection and ejection to be effected coaxially w.r.t. the moulding, for symmetry of flow and balance of ejection forces, and provides an adequate injection gate and a relatively large ejection thrust area.
FR7313100A 1973-04-11 1973-04-11 Injection moulding nozzle with integral ejection ram - esp. used for deep mouldings of expanded polystyrene Withdrawn FR2225271A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7313100A FR2225271A1 (en) 1973-04-11 1973-04-11 Injection moulding nozzle with integral ejection ram - esp. used for deep mouldings of expanded polystyrene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7313100A FR2225271A1 (en) 1973-04-11 1973-04-11 Injection moulding nozzle with integral ejection ram - esp. used for deep mouldings of expanded polystyrene

Publications (1)

Publication Number Publication Date
FR2225271A1 true FR2225271A1 (en) 1974-11-08

Family

ID=9117790

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7313100A Withdrawn FR2225271A1 (en) 1973-04-11 1973-04-11 Injection moulding nozzle with integral ejection ram - esp. used for deep mouldings of expanded polystyrene

Country Status (1)

Country Link
FR (1) FR2225271A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276008A (en) * 1977-08-26 1981-06-30 Southeastern Foam Products, Inc. Apparatus for molding expandable thermoplastic polymer particles
WO1984003469A1 (en) * 1983-03-03 1984-09-13 Joachim Teubert Ejector system for multiple moulds
EP0274720A2 (en) * 1987-01-09 1988-07-20 Münchow und Hühne Maschinenbaugesellschaft mbH Mould for the production of quadrangular form blocks
WO2000006359A1 (en) * 1998-07-31 2000-02-10 Lomold (Pty) Ltd Moulding apparatus and method of moulding
EP0991515A1 (en) * 1997-06-26 2000-04-12 Vicfam Plastics Pty. Ltd. Injection moulding of large plastic components
US6866809B2 (en) 1996-09-05 2005-03-15 Lomold Corporation Nv Production of moulded articles and apparatus for producing moulded articles
CN108501299A (en) * 2018-03-21 2018-09-07 彭超群 A kind of lightweight injection molding machine
CN109352931A (en) * 2018-11-22 2019-02-19 詹珠兰 A kind of Shampoo bottle fast injection molding stripper apparatus
CN113442354A (en) * 2021-06-30 2021-09-28 山西北方兴安化学工业有限公司 Casting and cladding method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276008A (en) * 1977-08-26 1981-06-30 Southeastern Foam Products, Inc. Apparatus for molding expandable thermoplastic polymer particles
WO1984003469A1 (en) * 1983-03-03 1984-09-13 Joachim Teubert Ejector system for multiple moulds
EP0274720A2 (en) * 1987-01-09 1988-07-20 Münchow und Hühne Maschinenbaugesellschaft mbH Mould for the production of quadrangular form blocks
EP0274720A3 (en) * 1987-01-09 1989-06-28 Münchow und Hühne Maschinenbaugesellschaft mbH Mould for the production of quadrangular form blocks
US6866809B2 (en) 1996-09-05 2005-03-15 Lomold Corporation Nv Production of moulded articles and apparatus for producing moulded articles
EP0991515A1 (en) * 1997-06-26 2000-04-12 Vicfam Plastics Pty. Ltd. Injection moulding of large plastic components
EP0991515A4 (en) * 1997-06-26 2004-05-26 Vicfam Plastics Pty Ltd Injection moulding of large plastic components
WO2000006359A1 (en) * 1998-07-31 2000-02-10 Lomold (Pty) Ltd Moulding apparatus and method of moulding
CN108501299A (en) * 2018-03-21 2018-09-07 彭超群 A kind of lightweight injection molding machine
CN109352931A (en) * 2018-11-22 2019-02-19 詹珠兰 A kind of Shampoo bottle fast injection molding stripper apparatus
CN113442354A (en) * 2021-06-30 2021-09-28 山西北方兴安化学工业有限公司 Casting and cladding method

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Legal Events

Date Code Title Description
ST Notification of lapse