GB1292965A - Edge control apparatus - Google Patents

Edge control apparatus

Info

Publication number
GB1292965A
GB1292965A GB5069969A GB5069969A GB1292965A GB 1292965 A GB1292965 A GB 1292965A GB 5069969 A GB5069969 A GB 5069969A GB 5069969 A GB5069969 A GB 5069969A GB 1292965 A GB1292965 A GB 1292965A
Authority
GB
United Kingdom
Prior art keywords
web
photo
edge
servomotor
oct
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.)
Expired
Application number
GB5069969A
Inventor
Giuseppe Piatelli
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1292965A publication Critical patent/GB1292965A/en
Expired 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
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B11/046—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring width
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/342—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells the sensed object being the obturating part

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1292965 Automatic edge guiding G PIATTELLI 15 Oct 1969 [18 Oct 1968 24 Sept 1969] 50699/69 Heading G3R The edge of a travelling web passes between a light source and a photo-electric detector, shielded from ambient light, so that variations of photo-cell output, due to lateral movements of the web, are amplified with rate feedback to restore the web to a desire path. In Fig.1, a web 118, to be edge-guided, passes between a light source 102 and a photo-resistor 107 in a detector head 112. The photo-transistor 107, which is screened from ambient light and receives light from source 102 through a filter 105, optical tunnel 104, and condenser 106, is connected to an integrated circuit 109 having an adjustable gain potentiometer 110 and a voltmeter 111 so that any error in the lateral position of the web results in a signal being applied through an amplifier 14a and controllers 24, 25, Fig.2, to operate a D.C. servomotor 17b which restores the web to the desired position. Rate feedback is provided by a tachometer generator 22a associated with servomotor 17b.
GB5069969A 1968-10-18 1969-10-15 Edge control apparatus Expired GB1292965A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3301668 1968-10-18
IT3301069 1969-09-24

Publications (1)

Publication Number Publication Date
GB1292965A true GB1292965A (en) 1972-10-18

Family

ID=26328959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5069969A Expired GB1292965A (en) 1968-10-18 1969-10-15 Edge control apparatus

Country Status (3)

Country Link
DE (1) DE1952630A1 (en)
FR (1) FR2021028A1 (en)
GB (1) GB1292965A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423751A1 (en) * 1978-04-21 1979-11-16 Charbonnages Ste Chimique Appts. for monitoring width of flat extruded sheet or tubing - using linked sensors oscillating across the paths of the sheet borders
DE3418799C1 (en) * 1984-05-19 1985-11-14 Mannesmann AG, 4000 Düsseldorf Incremental sensor
DE3511726A1 (en) * 1985-03-30 1986-10-02 Immanuel 3203 Sarstedt Jeschke Device for shutting off gas pipes
DE3742527A1 (en) * 1987-07-21 1989-06-22 Mannesmann Ag Photoelectric sensing or measuring device
DE3928159A1 (en) * 1989-08-25 1991-02-28 Erhardt & Leimer Gmbh EDGE PROBE

Also Published As

Publication number Publication date
DE1952630A1 (en) 1970-04-23
FR2021028A1 (en) 1970-07-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees