JPH0392321A - Injection device provided with ring valve position sensing function - Google Patents

Injection device provided with ring valve position sensing function

Info

Publication number
JPH0392321A
JPH0392321A JP22870489A JP22870489A JPH0392321A JP H0392321 A JPH0392321 A JP H0392321A JP 22870489 A JP22870489 A JP 22870489A JP 22870489 A JP22870489 A JP 22870489A JP H0392321 A JPH0392321 A JP H0392321A
Authority
JP
Japan
Prior art keywords
ring valve
static electricity
electricity volume
conductive component
sensing
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
JP22870489A
Other languages
Japanese (ja)
Other versions
JPH0714614B2 (en
Inventor
Ryozo Morita
Kazumitsu Omori
Original Assignee
Meiki 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 Meiki Co Ltd filed Critical Meiki Co Ltd
Priority to JP22870489A priority Critical patent/JPH0714614B2/en
Publication of JPH0392321A publication Critical patent/JPH0392321A/en
Publication of JPH0714614B2 publication Critical patent/JPH0714614B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C45/46Means 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 sense clearly defective molding and signal injection starting timing by sensing the moving position of a ring valve based on the static electricity volume between a conductive component and a ring valve.
CONSTITUTION: The static electricity volume between a conductive component 50 and a ring valve 32 disposed on an injection screw 18 is varied according to the distance between them. Therefore, from the sensing result of static electricity volume sensed by a static electricity volume sensing means 78, the distance between the conductive component and the ring valve and also the moving position of the ring valve is sensed. Thus, particularly the ring valve reaches in the vicinity of the backflow preventing position of a molding material by said arrangement, and the ring valve 32 moves close to the conductive component 50, and when a gap between them is narrowed, the sensitivity of static electricity volume becomes high, and the behavior of the ring valve can be known in detail in the vicinity of the backflow preventing position of the molding material.
COPYRIGHT: (C)1991,JPO&Japio
JP22870489A 1989-09-04 1989-09-04 Injection device with ring valve position detection function Expired - Lifetime JPH0714614B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22870489A JPH0714614B2 (en) 1989-09-04 1989-09-04 Injection device with ring valve position detection function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22870489A JPH0714614B2 (en) 1989-09-04 1989-09-04 Injection device with ring valve position detection function

Publications (2)

Publication Number Publication Date
JPH0392321A true JPH0392321A (en) 1991-04-17
JPH0714614B2 JPH0714614B2 (en) 1995-02-22

Family

ID=16880496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22870489A Expired - Lifetime JPH0714614B2 (en) 1989-09-04 1989-09-04 Injection device with ring valve position detection function

Country Status (1)

Country Link
JP (1) JPH0714614B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7074028B2 (en) 2003-01-17 2006-07-11 Fanuc Ltd Injection molding machine having a freely rotatable screw
US7556753B2 (en) 2007-02-15 2009-07-07 Fanuc Ltd Method of indicating an open/close state of a check valve of an injection molding machine
US7654809B2 (en) 2006-12-20 2010-02-02 Fanuc Ltd Injection molding machine having a force peak time detecting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT12211U1 (en) * 2010-07-19 2012-01-15 Engel Austria Gmbh Plastic neck with measuring sensor and transmission device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7074028B2 (en) 2003-01-17 2006-07-11 Fanuc Ltd Injection molding machine having a freely rotatable screw
US7654809B2 (en) 2006-12-20 2010-02-02 Fanuc Ltd Injection molding machine having a force peak time detecting device
US7556753B2 (en) 2007-02-15 2009-07-07 Fanuc Ltd Method of indicating an open/close state of a check valve of an injection molding machine

Also Published As

Publication number Publication date
JPH0714614B2 (en) 1995-02-22

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