JPS57113036A - Extrusion of pneumatic tube - Google Patents

Extrusion of pneumatic tube

Info

Publication number
JPS57113036A
JPS57113036A JP55187409A JP18740980A JPS57113036A JP S57113036 A JPS57113036 A JP S57113036A JP 55187409 A JP55187409 A JP 55187409A JP 18740980 A JP18740980 A JP 18740980A JP S57113036 A JPS57113036 A JP S57113036A
Authority
JP
Japan
Prior art keywords
tube
talc
thickness
extrusion
measuring
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
JP55187409A
Other languages
Japanese (ja)
Inventor
Tadao Tabata
Hiroshi Nakamura
Hideo Takahashi
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.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber 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 Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP55187409A priority Critical patent/JPS57113036A/en
Publication of JPS57113036A publication Critical patent/JPS57113036A/en
Pending legal-status Critical Current

Links

Classifications

    • B29C47/92—

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To maintain the thickness of a tube constant and applying talc uniformly to its inner face, by detecting the thickness of the tube after extrusion and adjusting the inner pressure of the tube according to the detected value in the extrusion of the pneumatic tube. CONSTITUTION:A green tube 8 is extruded by the die 2 and the pin 3 of an extruder 1 and taken off by a take-off conveyor 7 and at the same time talc is blown by pneumatic pressure from a tacl blowing nozzle 6, applied to the inner face of the tube 8 and exceses talc is recovered by vacuum extraction from a talc recovering nozzle 5. And in that case, the thickness of the tube 8 is detected by a photoelectric switch for measuring the upper linit of the tube height 10 and a photoelectric switch for measuring the lower than limit of the tube height 11, the inner pressure of the tube 8 is adjusted and the thickness of the tube 8 is maintained constant by adjusting the amount of vacuum extraction from the talc recovering nozzle 5 according to the detected value.
JP55187409A 1980-12-30 1980-12-30 Extrusion of pneumatic tube Pending JPS57113036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55187409A JPS57113036A (en) 1980-12-30 1980-12-30 Extrusion of pneumatic tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55187409A JPS57113036A (en) 1980-12-30 1980-12-30 Extrusion of pneumatic tube

Publications (1)

Publication Number Publication Date
JPS57113036A true JPS57113036A (en) 1982-07-14

Family

ID=16205523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55187409A Pending JPS57113036A (en) 1980-12-30 1980-12-30 Extrusion of pneumatic tube

Country Status (1)

Country Link
JP (1) JPS57113036A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61125416U (en) * 1985-01-26 1986-08-07
US5055244A (en) * 1989-01-27 1991-10-08 Paul Troester Maschinenfabrik Process and apparatus for the production of thin wall tubes from rubber - and/or plastic mixtures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61125416U (en) * 1985-01-26 1986-08-07
US5055244A (en) * 1989-01-27 1991-10-08 Paul Troester Maschinenfabrik Process and apparatus for the production of thin wall tubes from rubber - and/or plastic mixtures

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