JPS56136341A - Vent device of vent type injection molding machine - Google Patents

Vent device of vent type injection molding machine

Info

Publication number
JPS56136341A
JPS56136341A JP3934180A JP3934180A JPS56136341A JP S56136341 A JPS56136341 A JP S56136341A JP 3934180 A JP3934180 A JP 3934180A JP 3934180 A JP3934180 A JP 3934180A JP S56136341 A JPS56136341 A JP S56136341A
Authority
JP
Japan
Prior art keywords
vent
hole
screw
injection molding
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.)
Granted
Application number
JP3934180A
Other languages
Japanese (ja)
Other versions
JPS6018528B2 (en
Inventor
Mitsuaki Ejima
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.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine 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 Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Priority to JP3934180A priority Critical patent/JPS6018528B2/en
Publication of JPS56136341A publication Critical patent/JPS56136341A/en
Publication of JPS6018528B2 publication Critical patent/JPS6018528B2/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
    • B29C45/58—Details
    • B29C45/63—Venting or degassing means

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 prevent the occurrence of vent-up by a method wherein a stopper for controlling the opening of a vent hole of the injection molding machine is provided, the hole is opened during the rotation of a screw and is closed when the screw is not rotated. CONSTITUTION:In the vent type injection molding machine, the screw 1, 12 has a supplying section 2, a metering section 3, a vent section 5 and the second metering section 6, while a cylinder 11 is provided with the vent hole 8 at its part corresponding to the vent section 5 of the screw 1, 12. In the said machine, a vent chamber 14 capable of being maintained in an airtight condition is provided at the outside wall of the cylinder 11 on the front side of the hole 8, the chamber 14 is provided with a conduit 21 communicated with a suction source 20 such as a vacuum pump, and the stopper 19 driven by a pneumatic cylinder-piston assembly 18 and fitted into the hole 13 to stop up the latter 13 is provided. The vent hole 13 is opened during the rotation of the screw 1, 12, and is closed by fitting the stopper 19 into the hole 13 when the screw is not rotated.
JP3934180A 1980-03-27 1980-03-27 Vent device for vent type injection molding machine Expired JPS6018528B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3934180A JPS6018528B2 (en) 1980-03-27 1980-03-27 Vent device for vent type injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3934180A JPS6018528B2 (en) 1980-03-27 1980-03-27 Vent device for vent type injection molding machine

Publications (2)

Publication Number Publication Date
JPS56136341A true JPS56136341A (en) 1981-10-24
JPS6018528B2 JPS6018528B2 (en) 1985-05-10

Family

ID=12550383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3934180A Expired JPS6018528B2 (en) 1980-03-27 1980-03-27 Vent device for vent type injection molding machine

Country Status (1)

Country Link
JP (1) JPS6018528B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133415U (en) * 1982-03-04 1983-09-08 東芝機械株式会社 Vent opening/closing device
FR2613660A1 (en) * 1987-04-10 1988-10-14 Marcel Manceau Injection unit for a press, comprising an injection barrel housing a piston screw, provided with a multi-purpose auxiliary lateral orifice
EP0337353A2 (en) * 1988-04-11 1989-10-18 Toshiba Kikai Kabushiki Kaisha Vent type injection molding machine
JP2003515391A (en) * 1999-12-02 2003-05-07 レーム ゲゼルシヤフト ミツト ベシユレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト Injection molding method for (meth) acrylate copolymers with tertiary ammonium groups
CN104015320A (en) * 2014-05-27 2014-09-03 乐清市联盛电子有限公司 Vacuum-exhausting-type screw barrel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133415U (en) * 1982-03-04 1983-09-08 東芝機械株式会社 Vent opening/closing device
FR2613660A1 (en) * 1987-04-10 1988-10-14 Marcel Manceau Injection unit for a press, comprising an injection barrel housing a piston screw, provided with a multi-purpose auxiliary lateral orifice
EP0337353A2 (en) * 1988-04-11 1989-10-18 Toshiba Kikai Kabushiki Kaisha Vent type injection molding machine
JP2003515391A (en) * 1999-12-02 2003-05-07 レーム ゲゼルシヤフト ミツト ベシユレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト Injection molding method for (meth) acrylate copolymers with tertiary ammonium groups
JP4828758B2 (en) * 1999-12-02 2011-11-30 グラクソ グループ リミテッド Injection molding process for (meth) acrylate-copolymers with tertiary ammonium groups
CN104015320A (en) * 2014-05-27 2014-09-03 乐清市联盛电子有限公司 Vacuum-exhausting-type screw barrel

Also Published As

Publication number Publication date
JPS6018528B2 (en) 1985-05-10

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