JPS6426411A - Control method of mold temperature - Google Patents

Control method of mold temperature

Info

Publication number
JPS6426411A
JPS6426411A JP18410087A JP18410087A JPS6426411A JP S6426411 A JPS6426411 A JP S6426411A JP 18410087 A JP18410087 A JP 18410087A JP 18410087 A JP18410087 A JP 18410087A JP S6426411 A JPS6426411 A JP S6426411A
Authority
JP
Japan
Prior art keywords
temperature
medium
cycle time
mold
interval
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
JP18410087A
Other languages
Japanese (ja)
Other versions
JPH0761651B2 (en
Inventor
Keiji Azuma
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP62184100A priority Critical patent/JPH0761651B2/en
Publication of JPS6426411A publication Critical patent/JPS6426411A/en
Publication of JPH0761651B2 publication Critical patent/JPH0761651B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0288—Controlling heating or curing of polymers during moulding, e.g. by measuring temperatures or properties of the polymer and regulating the process

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To control a mold temperature at high accuracy, by a method wherein a mold temperature is measured at an interval of one cycle time of molding or less, the measured values are averaged at an interval of the one cycle time of the molding or more, through a predetermined number of mean values of which a temperature gradient is investigated and a medium temperature is controlled. CONSTITUTION:Temperature sensors 11 are provided on a mold 4, feed path 2 and return path 3. A temperature detection signal is sent to an operation/control part 13, controls a temperature set up value and a medium temperature. Mold temperatures are measured (n) times at an interval ti of one cycle time ts of molding or less. Then the measured values are averaged at the interval of the one cycle time ts is obtained. The above procedures are repeated in order and average values ts2,...,tsn are obtained. A change of a temperature gradient is operated and controlled so that the temperature set up value of the medium is lowered when the temperature gradient is positive, and the temperature set up value of the medium is raised when the temperature gradient is negative. With this construction, control is performed so that the medium temperature is controlled and the mold temperature is stabilized. Establishment of the medium temperature value is performed by PID (P: proportion, I: integration, D: differential calculus) control. Three times or more measurements within one cycle time ts are preferable.
JP62184100A 1987-07-22 1987-07-22 Mold temperature control method Expired - Lifetime JPH0761651B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62184100A JPH0761651B2 (en) 1987-07-22 1987-07-22 Mold temperature control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62184100A JPH0761651B2 (en) 1987-07-22 1987-07-22 Mold temperature control method

Publications (2)

Publication Number Publication Date
JPS6426411A true JPS6426411A (en) 1989-01-27
JPH0761651B2 JPH0761651B2 (en) 1995-07-05

Family

ID=16147393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62184100A Expired - Lifetime JPH0761651B2 (en) 1987-07-22 1987-07-22 Mold temperature control method

Country Status (1)

Country Link
JP (1) JPH0761651B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5735737A (en) * 1980-08-12 1982-02-26 Fukai Kogyo Kk Temperature controller
JPS5976308U (en) * 1982-11-16 1984-05-23 住友重機械工業株式会社 Mold temperature control device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5735737A (en) * 1980-08-12 1982-02-26 Fukai Kogyo Kk Temperature controller
JPS5976308U (en) * 1982-11-16 1984-05-23 住友重機械工業株式会社 Mold temperature control device

Also Published As

Publication number Publication date
JPH0761651B2 (en) 1995-07-05

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