JPS55144130A - Control of pressure in hollow for hollow extruded product - Google Patents

Control of pressure in hollow for hollow extruded product

Info

Publication number
JPS55144130A
JPS55144130A JP5385979A JP5385979A JPS55144130A JP S55144130 A JPS55144130 A JP S55144130A JP 5385979 A JP5385979 A JP 5385979A JP 5385979 A JP5385979 A JP 5385979A JP S55144130 A JPS55144130 A JP S55144130A
Authority
JP
Japan
Prior art keywords
pressure
extrusions
hollow
hollow section
blower
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
JP5385979A
Other languages
Japanese (ja)
Other versions
JPS6135928B2 (en
Inventor
Takao Nakajima
Tatsu Kai
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.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei 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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP5385979A priority Critical patent/JPS55144130A/en
Publication of JPS55144130A publication Critical patent/JPS55144130A/en
Publication of JPS6135928B2 publication Critical patent/JPS6135928B2/ja
Granted 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92428—Calibration, after-treatment, or cooling zone
    • 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
    • B29C2948/92514—Pressure
    • 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
    • B29C2948/92923—Calibration, after-treatment or cooling zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To prevent the deformation of the extrusions through a proper control of pressure in hollow by sucking gas generated in the hollow section from one end of a U-shaped connection pipe of the extruder dies in the extrusions of sponge weathering strip and the like. CONSTITUTION:Extrusions material 6 is extruded from the head 2 of the extruder 1. In the meantime, gas generated in the hollow section 7 is sucked with a blower 9 via the through hole 5 and the pipeline 8 of the U-shaped connection pipe 4. At this point, the pressure in the pipeline 8 is indicated by a level of the colored water 11 in a U-shaped tube 10 and the measured value of the manometer is detected with a detector 12. The signal of the water level detected is transmitted to a comparator 13 to be compared with the set pressure value of the proper pressure setting circuit 14. The result of the comparison is outputted to the drive controlling circuit 15 to adjust the drive motor of the blower 9 whereby the pressure in the hollow section of the extrusions material 6 can be maintained properly. Therefore, the extrusions material can be extruded in a normal form preventing the expansion and the sinking of the material 6.
JP5385979A 1979-04-30 1979-04-30 Control of pressure in hollow for hollow extruded product Granted JPS55144130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5385979A JPS55144130A (en) 1979-04-30 1979-04-30 Control of pressure in hollow for hollow extruded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5385979A JPS55144130A (en) 1979-04-30 1979-04-30 Control of pressure in hollow for hollow extruded product

Publications (2)

Publication Number Publication Date
JPS55144130A true JPS55144130A (en) 1980-11-10
JPS6135928B2 JPS6135928B2 (en) 1986-08-15

Family

ID=12954494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5385979A Granted JPS55144130A (en) 1979-04-30 1979-04-30 Control of pressure in hollow for hollow extruded product

Country Status (1)

Country Link
JP (1) JPS55144130A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07254341A (en) * 1995-03-15 1995-10-03 Fuji Electric Co Ltd Electromagnetic contactor
EP1366884A1 (en) * 2002-05-31 2003-12-03 NDH Medical Inc. Apparatus and method of extruding tubing having a variable wall thickness

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926379A (en) * 1972-07-05 1974-03-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926379A (en) * 1972-07-05 1974-03-08

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07254341A (en) * 1995-03-15 1995-10-03 Fuji Electric Co Ltd Electromagnetic contactor
EP1366884A1 (en) * 2002-05-31 2003-12-03 NDH Medical Inc. Apparatus and method of extruding tubing having a variable wall thickness
US6926509B2 (en) 2002-05-31 2005-08-09 Ndh Medical, Inc. Apparatus for extruding tubing having a variable wall thickness

Also Published As

Publication number Publication date
JPS6135928B2 (en) 1986-08-15

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