JPH04263917A - Measuring method of back-flow rate in injection molding machine - Google Patents

Measuring method of back-flow rate in injection molding machine

Info

Publication number
JPH04263917A
JPH04263917A JP4393591A JP4393591A JPH04263917A JP H04263917 A JPH04263917 A JP H04263917A JP 4393591 A JP4393591 A JP 4393591A JP 4393591 A JP4393591 A JP 4393591A JP H04263917 A JPH04263917 A JP H04263917A
Authority
JP
Japan
Prior art keywords
injection stroke
flow rate
molding machine
injection molding
measuring
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
JP4393591A
Other languages
Japanese (ja)
Other versions
JP2685986B2 (en
Inventor
Koichi Ueda
Original Assignee
Toyo Mach & Metal 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 Toyo Mach & Metal Co Ltd filed Critical Toyo Mach & Metal Co Ltd
Priority to JP3043935A priority Critical patent/JP2685986B2/en
Publication of JPH04263917A publication Critical patent/JPH04263917A/en
Application granted granted Critical
Publication of JP2685986B2 publication Critical patent/JP2685986B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50Axially movable screw
    • B29C45/52Non-return devices

Abstract

PURPOSE: To measure automatically and highly accurately a back-flow rate in an in-line screw type injection molding machine having a check valve mechanism.
CONSTITUTION: Charges are made under the condition where a nozzle 7 is shut, and a first injection stroke is then conducted. According to this first injection stroke, a chuck ring 3 is shifted to a state that it is pressed against a chuck sheet. After the first injection stroke, a second injection stroke is conducted, and a microcomputer 11 compares a position of a screw 1 located upon completion of the first injection stroke with that of the same located upon completion of the second injection stroke and computes both the positions to calculated a back-feed rate.
COPYRIGHT: (C)1992,JPO&Japio
JP3043935A 1991-02-18 1991-02-18 Measuring method of backflow amount in injection molding machine Expired - Fee Related JP2685986B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3043935A JP2685986B2 (en) 1991-02-18 1991-02-18 Measuring method of backflow amount in injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3043935A JP2685986B2 (en) 1991-02-18 1991-02-18 Measuring method of backflow amount in injection molding machine

Publications (2)

Publication Number Publication Date
JPH04263917A true JPH04263917A (en) 1992-09-18
JP2685986B2 JP2685986B2 (en) 1997-12-08

Family

ID=12677550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3043935A Expired - Fee Related JP2685986B2 (en) 1991-02-18 1991-02-18 Measuring method of backflow amount in injection molding machine

Country Status (1)

Country Link
JP (1) JP2685986B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007237498A (en) * 2006-03-07 2007-09-20 Nissei Plastics Ind Co Error-monitoring method of injection molding machine
US7661946B2 (en) 2007-06-05 2010-02-16 Fanuc Ltd Injection molding machine having a screw equipped with a check ring
JP2016185607A (en) * 2015-03-27 2016-10-27 株式会社日本製鋼所 Wear and deterioration inspection method for backflow prevention device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4264427B2 (en) * 2005-05-30 2009-05-20 日精樹脂工業株式会社 Injection molding machine weighing method
KR102178494B1 (en) * 2016-02-29 2020-11-13 엘에스엠트론 주식회사 Abnormal Detection Method for Injection Molding Machine And Injection Molding Machine with Abnormal Detection Function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007237498A (en) * 2006-03-07 2007-09-20 Nissei Plastics Ind Co Error-monitoring method of injection molding machine
JP4515401B2 (en) * 2006-03-07 2010-07-28 日精樹脂工業株式会社 Error monitoring method for injection molding machine
US7661946B2 (en) 2007-06-05 2010-02-16 Fanuc Ltd Injection molding machine having a screw equipped with a check ring
JP2016185607A (en) * 2015-03-27 2016-10-27 株式会社日本製鋼所 Wear and deterioration inspection method for backflow prevention device

Also Published As

Publication number Publication date
JP2685986B2 (en) 1997-12-08

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