ES477925A1 - Mejoras introducidas en una maquina de moldeo por inyeccion. - Google Patents

Mejoras introducidas en una maquina de moldeo por inyeccion.

Info

Publication number
ES477925A1
ES477925A1 ES477925A ES477925A ES477925A1 ES 477925 A1 ES477925 A1 ES 477925A1 ES 477925 A ES477925 A ES 477925A ES 477925 A ES477925 A ES 477925A ES 477925 A1 ES477925 A1 ES 477925A1
Authority
ES
Spain
Prior art keywords
piston
ram
regenerative
nonregenerative
molding machine
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
ES477925A
Other languages
English (en)
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.)
Package Machinery Co
Original Assignee
Package Machinery Co
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 Package Machinery Co filed Critical Package Machinery Co
Publication of ES477925A1 publication Critical patent/ES477925A1/es
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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/82—Hydraulic or pneumatic circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/241—Drive means therefor; screw bearings

Landscapes

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

Abstract

Mejoras introducidas en una máquina de moldeo por inyección que tiene un molde que define una cavidad de molde cargada con un material curvable por medio de un émbolo o empujador movible, que comprenden: medios actuadores para mover el émbolo en su carrera, que incluyen un conjunto de pistón y cilindro conectado con el empujador y que tiene un pistón desequilibrado movible en el conjunto por medio de fluido a presión en el cilindro, teniendo un primer lado del pistón desequilibrado un área de presión efectiva menor que el segundo lado, opuesto y medios de control de fluido para dirigir fluido a presión a y fuera del cilindro en cada lado del pistón desequilibrado, que incluyen una válvula de regeneración que tiene conexiones de fluido con el cilindro en los lados primero y segundo del pistón y operable entre una primera condición que interrumpe eficazmente la comunicación de fluido entre los dos lados del pistón y una segunda condición que permite la comunicación de fluido entre los dos lados para operar selectivamente el pistón desequilibrado regenerativamente
ES477925A 1978-10-02 1979-02-21 Mejoras introducidas en una maquina de moldeo por inyeccion. Expired ES477925A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/948,082 US4256447A (en) 1978-10-02 1978-10-02 Injection molding machine with regenerative feed system

Publications (1)

Publication Number Publication Date
ES477925A1 true ES477925A1 (es) 1979-12-01

Family

ID=25487231

Family Applications (2)

Application Number Title Priority Date Filing Date
ES477925A Expired ES477925A1 (es) 1978-10-02 1979-02-21 Mejoras introducidas en una maquina de moldeo por inyeccion.
ES482618A Expired ES482618A1 (es) 1978-10-02 1979-07-19 Un metodo de hacer funcionar una maquina de moldeo por inye-ccion.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES482618A Expired ES482618A1 (es) 1978-10-02 1979-07-19 Un metodo de hacer funcionar una maquina de moldeo por inye-ccion.

Country Status (10)

Country Link
US (1) US4256447A (es)
JP (1) JPS5549239A (es)
BR (1) BR7901720A (es)
CA (1) CA1118975A (es)
DE (1) DE2905685A1 (es)
ES (2) ES477925A1 (es)
FR (1) FR2437927A1 (es)
GB (1) GB2030917B (es)
IT (1) IT7967391A0 (es)
NL (1) NL7901524A (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61140363A (ja) * 1984-12-13 1986-06-27 Toshiba Mach Co Ltd 電動機駆動射出成形機
JPS6394811A (ja) * 1986-10-09 1988-04-25 Sumitomo Heavy Ind Ltd 射出成形機の射出油圧回路
DE3818264A1 (de) * 1988-05-28 1989-12-07 Rexroth Mannesmann Gmbh Verfahren und vorrichtung zum steuern eines antriebszylinders
JPH03264324A (ja) * 1990-03-15 1991-11-25 Ube Ind Ltd 射出成形機の射出装置及び射出圧制御方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001233A (en) * 1959-01-22 1961-09-26 Ohio Commw Eng Co Apparatus for plastic injection
US3741700A (en) * 1970-03-10 1973-06-26 Pennwalt Corp Time monitored injection molding cycle with timed pressure control
DE2245564A1 (de) * 1972-09-16 1974-03-21 Demag Kunststofftech Kunststoffverarbeitungsmaschine mit einer einrichtung zur steuerung von einstellgroessen an regelventilen
US4040776A (en) * 1973-08-21 1977-08-09 Kelz Norbert R Pressure moulding machines and mould parts therefor
JPS5121520A (en) * 1974-08-16 1976-02-20 Ube Industries Daikasutomashinno shashutsusochi

Also Published As

Publication number Publication date
ES482618A1 (es) 1980-02-16
DE2905685A1 (de) 1980-04-03
CA1118975A (en) 1982-03-02
BR7901720A (pt) 1980-10-07
JPS5549239A (en) 1980-04-09
IT7967391A0 (it) 1979-02-21
FR2437927A1 (fr) 1980-04-30
GB2030917A (en) 1980-04-16
US4256447A (en) 1981-03-17
GB2030917B (en) 1982-10-13
NL7901524A (nl) 1980-04-08

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