JPS572716A - Molding apparatus for plastics - Google Patents

Molding apparatus for plastics

Info

Publication number
JPS572716A
JPS572716A JP7724280A JP7724280A JPS572716A JP S572716 A JPS572716 A JP S572716A JP 7724280 A JP7724280 A JP 7724280A JP 7724280 A JP7724280 A JP 7724280A JP S572716 A JPS572716 A JP S572716A
Authority
JP
Japan
Prior art keywords
product
pressure
press
boosting power
dents
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
JP7724280A
Other languages
Japanese (ja)
Inventor
Susumu Ogiwara
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.)
Aida Engineering Ltd
Original Assignee
Aida Engineering 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 Aida Engineering Ltd filed Critical Aida Engineering Ltd
Priority to JP7724280A priority Critical patent/JPS572716A/en
Publication of JPS572716A publication Critical patent/JPS572716A/en
Pending 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

PURPOSE:To inhibit the generation of dents in the surface of a product or cavities in the product, in a press-molding method for the laminate of a glass fiber reinforcing member and a resin, by adoption of a step to completely purge gases from a material. CONSTITUTION:A material 4 flows out along a metal die from a space between thin films 5a formed on upper and lower surfaces, within a period when a pressure changes from Q1 to Q2 in the diagram illustrating the variation of the pressure. When the pressure reaches Q2, the material is pressed by the pressure of a press independently from the boosting power of a die cushion 8, so that the material is filled in a space between upper and lower dies and molded as a product 6. At the point Q3, the material is maintained under the affection of the boosting power of the die cushion 8, while the press is stopped for a certain period. Thereafter, the boosting power is stopped at the point 0, and a parted product 6 is taken out from the metal die. Consequently, dents or cavities are not generated in the surface of the product, owing to the adoption of the step to completely purge gases from the material. As a result, the product having a high commercial value can be produced.
JP7724280A 1980-06-10 1980-06-10 Molding apparatus for plastics Pending JPS572716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7724280A JPS572716A (en) 1980-06-10 1980-06-10 Molding apparatus for plastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7724280A JPS572716A (en) 1980-06-10 1980-06-10 Molding apparatus for plastics

Publications (1)

Publication Number Publication Date
JPS572716A true JPS572716A (en) 1982-01-08

Family

ID=13628386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7724280A Pending JPS572716A (en) 1980-06-10 1980-06-10 Molding apparatus for plastics

Country Status (1)

Country Link
JP (1) JPS572716A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145410A (en) * 1982-02-22 1983-08-30 Aida Eng Ltd Forming method of plastic material by mechanical press
JPS62178117U (en) * 1986-05-02 1987-11-12
US5281383A (en) * 1991-03-13 1994-01-25 Kasai Kogyo Co., Ltd. Method for molding a laminated molded article using a vented mold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825575A (en) * 1981-08-07 1983-02-15 Mitsubishi Electric Corp Apparatus for controlling ignition timing in internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825575A (en) * 1981-08-07 1983-02-15 Mitsubishi Electric Corp Apparatus for controlling ignition timing in internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145410A (en) * 1982-02-22 1983-08-30 Aida Eng Ltd Forming method of plastic material by mechanical press
JPS62178117U (en) * 1986-05-02 1987-11-12
US5281383A (en) * 1991-03-13 1994-01-25 Kasai Kogyo Co., Ltd. Method for molding a laminated molded article using a vented mold

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