JPS57204408A - Thickness detecting method - Google Patents

Thickness detecting method

Info

Publication number
JPS57204408A
JPS57204408A JP9108381A JP9108381A JPS57204408A JP S57204408 A JPS57204408 A JP S57204408A JP 9108381 A JP9108381 A JP 9108381A JP 9108381 A JP9108381 A JP 9108381A JP S57204408 A JPS57204408 A JP S57204408A
Authority
JP
Japan
Prior art keywords
rolls
roll
free roll
fixed
substance
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
JP9108381A
Other languages
Japanese (ja)
Inventor
Yoshinobu Kobayashi
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry 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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP9108381A priority Critical patent/JPS57204408A/en
Publication of JPS57204408A publication Critical patent/JPS57204408A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0691—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of objects while moving
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE:To detect thickness of band-like substance with high reliability, by using a free roll supported by two fixed rolls. CONSTITUTION:A substance whose thickness is measured 1 is drawn in by a pair of upper and lower drawing-in rolls 2, passes through between one roll 3 out of two rolls 3, 4 fixed by a shaft, and a free roll 5, and is led to the next process by a drawing-out roll 6. The free roll is supported by the two rolls 3, 4, and is not fixed by a rotary shaft. On the shaft core of the free roll, a through-hole 8 is provided in the axial direction, and in the hole, a projector 7a and a photodetector 7b are placed so as to be opposed. If a detected substance exceeding the thickness set in advance passes through between the rolls 3, 5, the shaft core position of the free roll moves, therefore, it is detected by both projector and photodetector.
JP9108381A 1981-06-12 1981-06-12 Thickness detecting method Pending JPS57204408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9108381A JPS57204408A (en) 1981-06-12 1981-06-12 Thickness detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9108381A JPS57204408A (en) 1981-06-12 1981-06-12 Thickness detecting method

Publications (1)

Publication Number Publication Date
JPS57204408A true JPS57204408A (en) 1982-12-15

Family

ID=14016614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9108381A Pending JPS57204408A (en) 1981-06-12 1981-06-12 Thickness detecting method

Country Status (1)

Country Link
JP (1) JPS57204408A (en)

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