GB388662A - Improvements in or relating to the manufacture of mouldings - Google Patents

Improvements in or relating to the manufacture of mouldings

Info

Publication number
GB388662A
GB388662A GB21222/32A GB2122232A GB388662A GB 388662 A GB388662 A GB 388662A GB 21222/32 A GB21222/32 A GB 21222/32A GB 2122232 A GB2122232 A GB 2122232A GB 388662 A GB388662 A GB 388662A
Authority
GB
United Kingdom
Prior art keywords
core
plunger
counterpressure
die
moulding
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
GB21222/32A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB388662A publication Critical patent/GB388662A/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
    • B29C45/36—Moulds having means for locating or centering cores
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B29C45/14073—Positioning or centering articles in the mould using means being retractable during injection
    • 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
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • 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
    • B29C45/36—Moulds having means for locating or centering cores
    • B29C2045/363—Moulds having means for locating or centering cores using a movable core or core part
    • 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
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C2045/5695—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding using a movable mould part for continuously increasing the volume of the mould cavity to its final dimension during the whole injection step
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Landscapes

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

Abstract

388,662. Moulding artificial resins &c. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. July 27, 1932, No. 21222. Convention date, July 31, 1931. [Class 87 (ii).] Tubes or other articles of artificial resin or other plastic material moulded by means of a central core which is liable to be distorted under the moulding pressure, are produced with a conduit or left-in core accurately centered by moulding against a counterpressure acting on the die. Fig. 1 shows one example in which a core 7, fixed to the lid 2 of a die, is mounted slidably in the plunger 8 to which the counterpressure is applied. When the material is delivered under heavy pressure through the feed orifices 3 it forces the plunger 8 downwards, gradually unsheathing the core during the process. The counterpressure may be applied by hydraulic or mechanical apparatus, for example by counterweights, by friction between the plunger and the walls of a suitable vessel or by dashpot mechanism. The core 7 may be arranged to be left in or removed from the finished article. Fig. 2 shows a modified construction in which the core 15 is fixed to the end of the counterpressure plunger 14 and slides through a hole 16 in the cover-plate. When the plunger has been pushed right out of the die 11 against the action of the weights 20, the friction of the material against the walls of the die may supply sufficient counterpressure for the continuance of the operation. Alternatively, the emerging end of the material may be held by friction gripping-members. The inlet end of the apparatus may be maintained at a comparatively low temperature when dealing with artificial resin. Fig. 3 shows a construction for making tubes. The plunger 25 forms a sliding guide for the fixed core 32, and the tube is formed when the moulded material moves on past the end of the core. Articles may be made with multiple cores or a plurality of conduits, and in some cases the main die may be lined with a metal or other tube so that a covered moulded cored or tubular article is produced. Such an article can itself be used as a core in a subsequent moulding operation to produce articles built up in laminated rings.
GB21222/32A 1931-07-31 1932-07-27 Improvements in or relating to the manufacture of mouldings Expired GB388662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL388662X 1931-07-31

Publications (1)

Publication Number Publication Date
GB388662A true GB388662A (en) 1933-03-02

Family

ID=19785746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21222/32A Expired GB388662A (en) 1931-07-31 1932-07-27 Improvements in or relating to the manufacture of mouldings

Country Status (1)

Country Link
GB (1) GB388662A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418823A (en) * 1945-02-07 1947-04-15 Columbia Protektosite Company Apparatus for molding wire core temples
US2434594A (en) * 1944-10-06 1948-01-13 Western Electric Co Molding apparatus
US2435282A (en) * 1943-11-19 1948-02-03 Lester Engineering Co Process and apparatus for extruding plastic materials
US2443826A (en) * 1944-06-23 1948-06-22 Combined Optical Ind Ltd Apparatus for the manufacture of lenses
US2465799A (en) * 1945-01-05 1949-03-29 Gravesen Carl Christian Method of coating or encasing substantially cylindrical objects by a pressure molding process
US2781547A (en) * 1951-12-26 1957-02-19 Honeywell Regulator Co Molding procedure and apparatus
US2822578A (en) * 1956-09-06 1958-02-11 George M Lobell Injection-moulding apparatus
US2825093A (en) * 1955-12-05 1958-03-04 Roy F High Skin-covering mold
US2969563A (en) * 1958-06-16 1961-01-31 Tube Turns Plastics Inc Plastic working process and apparatus
US3051991A (en) * 1959-03-26 1962-09-04 Joseph W Hanzel Vacuum type potting fixture for coating articles
US3142716A (en) * 1961-07-21 1964-07-28 Northwest Ind Ltd Process utilizing shuttle moulds
FR2229529A1 (en) * 1973-05-17 1974-12-13 Baignol & Farjon Sa Moulding pointed articles - such as crayons or tracing articles
FR2576245A1 (en) * 1985-01-23 1986-07-25 Jaeger Method for coating an elongate sensor, moulding device for the implementation of the method, sensor obtained and armature (reinforcement) involved in the manufacture of the sensor
WO1990000960A1 (en) * 1988-07-27 1990-02-08 Glocker, Raymond A process for producing thin walled tubes with connecting elements by injection moulding, the tubes thus produced and their use as indwelling vein cannulas
US5759647A (en) * 1993-04-28 1998-06-02 Nippon Petrochemicals Co., Ltd. Tubular article method for injection molding thereof
EP1312456A1 (en) * 2001-11-19 2003-05-21 RKT Rodinger Kunststoff-Technik GmbH Method and apparatus for the manufacture of micro-fluidic components, and micro-fluidic components
EP2021154A1 (en) * 2006-05-08 2009-02-11 Agency for Science, Technology and Research Mould sleeve and moulding method

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435282A (en) * 1943-11-19 1948-02-03 Lester Engineering Co Process and apparatus for extruding plastic materials
US2443826A (en) * 1944-06-23 1948-06-22 Combined Optical Ind Ltd Apparatus for the manufacture of lenses
US2434594A (en) * 1944-10-06 1948-01-13 Western Electric Co Molding apparatus
US2465799A (en) * 1945-01-05 1949-03-29 Gravesen Carl Christian Method of coating or encasing substantially cylindrical objects by a pressure molding process
US2418823A (en) * 1945-02-07 1947-04-15 Columbia Protektosite Company Apparatus for molding wire core temples
US2781547A (en) * 1951-12-26 1957-02-19 Honeywell Regulator Co Molding procedure and apparatus
US2825093A (en) * 1955-12-05 1958-03-04 Roy F High Skin-covering mold
US2822578A (en) * 1956-09-06 1958-02-11 George M Lobell Injection-moulding apparatus
US2969563A (en) * 1958-06-16 1961-01-31 Tube Turns Plastics Inc Plastic working process and apparatus
US3051991A (en) * 1959-03-26 1962-09-04 Joseph W Hanzel Vacuum type potting fixture for coating articles
US3142716A (en) * 1961-07-21 1964-07-28 Northwest Ind Ltd Process utilizing shuttle moulds
FR2229529A1 (en) * 1973-05-17 1974-12-13 Baignol & Farjon Sa Moulding pointed articles - such as crayons or tracing articles
FR2576245A1 (en) * 1985-01-23 1986-07-25 Jaeger Method for coating an elongate sensor, moulding device for the implementation of the method, sensor obtained and armature (reinforcement) involved in the manufacture of the sensor
WO1990000960A1 (en) * 1988-07-27 1990-02-08 Glocker, Raymond A process for producing thin walled tubes with connecting elements by injection moulding, the tubes thus produced and their use as indwelling vein cannulas
US5759647A (en) * 1993-04-28 1998-06-02 Nippon Petrochemicals Co., Ltd. Tubular article method for injection molding thereof
EP1312456A1 (en) * 2001-11-19 2003-05-21 RKT Rodinger Kunststoff-Technik GmbH Method and apparatus for the manufacture of micro-fluidic components, and micro-fluidic components
EP2021154A1 (en) * 2006-05-08 2009-02-11 Agency for Science, Technology and Research Mould sleeve and moulding method
EP2021154A4 (en) * 2006-05-08 2009-08-05 Agency Science Tech & Res Mould sleeve and moulding method

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