JPS55137944A - Extrusion molding machine - Google Patents

Extrusion molding machine

Info

Publication number
JPS55137944A
JPS55137944A JP4635279A JP4635279A JPS55137944A JP S55137944 A JPS55137944 A JP S55137944A JP 4635279 A JP4635279 A JP 4635279A JP 4635279 A JP4635279 A JP 4635279A JP S55137944 A JPS55137944 A JP S55137944A
Authority
JP
Japan
Prior art keywords
baffle
pulsation
barrel
molding machine
extrusion molding
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
JP4635279A
Other languages
Japanese (ja)
Inventor
Tadashi Sato
Hidenori Idate
Katsuya Tsukamoto
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 JP4635279A priority Critical patent/JPS55137944A/en
Publication of JPS55137944A publication Critical patent/JPS55137944A/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92666—Distortion, shrinkage, dilatation, swell or warpage
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To absorb the pulsation of a material and prevent a surging phenomenon thereof in an extrusion molding machine, by providing the extruder with a baffle which can be extended into and retracted from the interior of a barrel and which can be regulated as to the extension length thereof in accordance with the magnitude of a material-driving force. CONSTITUTION:A screw 1 is driven to transfer a plastic material which is introduced from a hopper 15 onto a barrel 2. The plastic material is in a solid state at first and pulsates considerably. The material then turns to be in a molten state via a solid-liquid transient state. When a pulsating molten resin is moved by a screw 1, it impinges upon an inclined surface of an inner peripheral portion of a baffle 3. When the pressure of the material is increased by the pulsation thereof, the baffle 3 is retracted into a baffle insertion recess 14, which is provided between guides 4, 5, against the resilient force of springs 7. Thus, the length of the portion of the baffle 3 which is extended into barrel 2 is varied in accordance with the magnitude of the material-driving force to thereby regulate the flow resistance, absorb the pulsation of the material and prevent a surging phenomenon thereof.
JP4635279A 1979-04-15 1979-04-15 Extrusion molding machine Pending JPS55137944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4635279A JPS55137944A (en) 1979-04-15 1979-04-15 Extrusion molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4635279A JPS55137944A (en) 1979-04-15 1979-04-15 Extrusion molding machine

Publications (1)

Publication Number Publication Date
JPS55137944A true JPS55137944A (en) 1980-10-28

Family

ID=12744744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4635279A Pending JPS55137944A (en) 1979-04-15 1979-04-15 Extrusion molding machine

Country Status (1)

Country Link
JP (1) JPS55137944A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6440517U (en) * 1987-09-03 1989-03-10
CN107428062A (en) * 2015-04-02 2017-12-01 株式会社普利司通 Gear pump type extruder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6440517U (en) * 1987-09-03 1989-03-10
CN107428062A (en) * 2015-04-02 2017-12-01 株式会社普利司通 Gear pump type extruder
EP3278951A4 (en) * 2015-04-02 2018-03-14 Bridgestone Corporation Gear pump extruding machine
CN107428062B (en) * 2015-04-02 2019-08-23 株式会社普利司通 Gear pump type extruder

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