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JPS6477510A - Clamping device of mold - Google Patents

Clamping device of mold

Info

Publication number
JPS6477510A
JPS6477510A JP23508587A JP23508587A JPS6477510A JP S6477510 A JPS6477510 A JP S6477510A JP 23508587 A JP23508587 A JP 23508587A JP 23508587 A JP23508587 A JP 23508587A JP S6477510 A JPS6477510 A JP S6477510A
Authority
JP
Japan
Prior art keywords
ram
oil
pressure
oil chamber
mold
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.)
Granted
Application number
JP23508587A
Other languages
Japanese (ja)
Other versions
JPH0433247B2 (en
Inventor
Yoshihiko Hattori
Yukio Inukai
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.)
Sumitomo Riko Co Ltd
Original Assignee
Sumitomo Riko Co Ltd
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 Sumitomo Riko Co Ltd filed Critical Sumitomo Riko Co Ltd
Priority to JP23508587A priority Critical patent/JPS6477510A/en
Publication of JPS6477510A publication Critical patent/JPS6477510A/en
Publication of JPH0433247B2 publication Critical patent/JPH0433247B2/ja
Granted 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
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/67—Mould opening, closing or clamping devices hydraulic

Landscapes

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

Abstract

PURPOSE:To generate a necessary mold clamping force with small driving force by a method wherein the pressure bearing area of a second ram is made larger than that of a first ram, and a specified mold clamping holding mechanism, which contains a unidirectional valve means, is provided in a connecting passage between a first and a second oil chambers. CONSTITUTION:When a ram 44 is raised by the actuation of a hydraulic cylinder 42, a first ram 20 is pushed upwards, resulting in flowing the working oil in a first oil chamber 24 through a connecting passage 34 and a check valve 38 in the midway of the passage 34 into a second oil chamber 28. Since the pressure bearing area of a second ram 26 is made larger than that of the first ram 20, the driving force applied to the ram 20 is boosted at the ram 26. Even after the injection of rubber material with an injection device and the following lowering of the ram 44 in the hydraulic cylinder 42, the oil pressure developed in a second oil pressure 28 is retained so as to maintain the mold clamped state. When molds 16 and 30 arrive a mold opening station, pilot operating pressure is fed to the check valve 38 so as to open the check valve and consequently to let the oil pressure escape in the second oil chamber 28 to the first oil chamber 24 in order to release the mold clamping force.
JP23508587A 1987-09-18 1987-09-18 Clamping device of mold Granted JPS6477510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23508587A JPS6477510A (en) 1987-09-18 1987-09-18 Clamping device of mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23508587A JPS6477510A (en) 1987-09-18 1987-09-18 Clamping device of mold

Publications (2)

Publication Number Publication Date
JPS6477510A true JPS6477510A (en) 1989-03-23
JPH0433247B2 JPH0433247B2 (en) 1992-06-02

Family

ID=16980845

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23508587A Granted JPS6477510A (en) 1987-09-18 1987-09-18 Clamping device of mold

Country Status (1)

Country Link
JP (1) JPS6477510A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0433517U (en) * 1990-07-16 1992-03-18
WO2007001178A2 (en) * 2005-04-29 2007-01-04 Fico B.V. Press with plate-like frame parts, and method for operating such a plate press
EP3928948A1 (en) * 2020-06-24 2021-12-29 King Steel Machinery Co., Ltd. Injection molding system having movable molding device and method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5399262A (en) * 1977-02-12 1978-08-30 Asahi Chem Ind Co Ltd Injection molding machine
JPS5713217U (en) * 1980-06-28 1982-01-23

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5530510A (en) * 1978-08-21 1980-03-04 Iritsuchi Gorukofu Peetoru Planetary crank gear device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5399262A (en) * 1977-02-12 1978-08-30 Asahi Chem Ind Co Ltd Injection molding machine
JPS5713217U (en) * 1980-06-28 1982-01-23

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0433517U (en) * 1990-07-16 1992-03-18
WO2007001178A2 (en) * 2005-04-29 2007-01-04 Fico B.V. Press with plate-like frame parts, and method for operating such a plate press
WO2007001178A3 (en) * 2005-04-29 2007-04-05 Fico Bv Press with plate-like frame parts, and method for operating such a plate press
JP2008539583A (en) * 2005-04-29 2008-11-13 フィーコ ベースローテン フェンノートシャップ Press having plate-like frame portion and method of operating plate press
US7771184B2 (en) 2005-04-29 2010-08-10 Fico B.V. Press with plate-like frame parts, and method for operating such a plate press
EP3928948A1 (en) * 2020-06-24 2021-12-29 King Steel Machinery Co., Ltd. Injection molding system having movable molding device and method thereof

Also Published As

Publication number Publication date
JPH0433247B2 (en) 1992-06-02

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