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JPS5557909A - Automatic reduction control method - Google Patents

Automatic reduction control method

Info

Publication number
JPS5557909A
JPS5557909A JP13117578A JP13117578A JPS5557909A JP S5557909 A JPS5557909 A JP S5557909A JP 13117578 A JP13117578 A JP 13117578A JP 13117578 A JP13117578 A JP 13117578A JP S5557909 A JPS5557909 A JP S5557909A
Authority
JP
Japan
Prior art keywords
reduction
screw
signal
accordance
start position
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.)
Pending
Application number
JP13117578A
Other languages
Japanese (ja)
Inventor
Shigeru Fujita
Tadatoshi Sone
Kiyokazu Kayanuma
Hideo Sakanishi
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 JP13117578A priority Critical patent/JPS5557909A/en
Publication of JPS5557909A publication Critical patent/JPS5557909A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Position Or Direction (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To make automatic reduction possible in a short time by one step signal, by using a reduction function direct from a reduction start position.
CONSTITUTION: From a reduction start position, reduction is started direct in accordance with a reduction function (see slanting line C). In a metering process of an in-line screw projection forming unit where program control is performed, comparator 20 makes a comparison between a variable sent from potentiometer 15 in accordance with the movement of screw 11 and a value from arithmetic circuit 19 to send a signal to signal switch 21 when both values agree each other, namely, when screw 11 reaches reduction motion start point (x1) in its stroke, so that electromagnetic linear control valve 17 will be controlled by a signal from reduction speed setter 18. This constitution requires only one step signal used for a screw stop and also shorten the reduction time.
COPYRIGHT: (C)1980,JPO&Japio
JP13117578A 1978-10-26 1978-10-26 Automatic reduction control method Pending JPS5557909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13117578A JPS5557909A (en) 1978-10-26 1978-10-26 Automatic reduction control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13117578A JPS5557909A (en) 1978-10-26 1978-10-26 Automatic reduction control method

Publications (1)

Publication Number Publication Date
JPS5557909A true JPS5557909A (en) 1980-04-30

Family

ID=15051751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13117578A Pending JPS5557909A (en) 1978-10-26 1978-10-26 Automatic reduction control method

Country Status (1)

Country Link
JP (1) JPS5557909A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61158417A (en) * 1984-12-30 1986-07-18 Meiki Co Ltd In-line screw type injection molding machine
JPS61177221A (en) * 1985-02-04 1986-08-08 Japan Steel Works Ltd:The Plasticating control device of injection molder
JPS6395927A (en) * 1986-10-13 1988-04-26 Sumitomo Heavy Ind Ltd Weighing control device for injection molder
JPH04239608A (en) * 1991-01-23 1992-08-27 Japan Steel Works Ltd:The Mold opening/closing control method for resin molding machine
US7021917B2 (en) 2002-11-05 2006-04-04 Fanuc Ltd Injection molding machine metering and control device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61158417A (en) * 1984-12-30 1986-07-18 Meiki Co Ltd In-line screw type injection molding machine
JPH0152170B2 (en) * 1984-12-30 1989-11-08 Meiki Seisakusho Kk
JPS61177221A (en) * 1985-02-04 1986-08-08 Japan Steel Works Ltd:The Plasticating control device of injection molder
JPH0218965B2 (en) * 1985-02-04 1990-04-27 Japan Steel Works Ltd
JPS6395927A (en) * 1986-10-13 1988-04-26 Sumitomo Heavy Ind Ltd Weighing control device for injection molder
JPH0661800B2 (en) * 1986-10-13 1994-08-17 住友重機械工業株式会社 Metering control device for injection molding machine
JPH04239608A (en) * 1991-01-23 1992-08-27 Japan Steel Works Ltd:The Mold opening/closing control method for resin molding machine
US7021917B2 (en) 2002-11-05 2006-04-04 Fanuc Ltd Injection molding machine metering and control device
CN1313260C (en) * 2002-11-05 2007-05-02 发那科株式会社 Metering method and controller of injection molding machine

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