WO1991005902A3 - Process and device for opto-electronic detection of an edge of a workpiece to be stitched - Google Patents

Process and device for opto-electronic detection of an edge of a workpiece to be stitched Download PDF

Info

Publication number
WO1991005902A3
WO1991005902A3 PCT/EP1990/001771 EP9001771W WO9105902A3 WO 1991005902 A3 WO1991005902 A3 WO 1991005902A3 EP 9001771 W EP9001771 W EP 9001771W WO 9105902 A3 WO9105902 A3 WO 9105902A3
Authority
WO
WIPO (PCT)
Prior art keywords
stitched
workpiece
edge
detection point
intensity
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.)
Ceased
Application number
PCT/EP1990/001771
Other languages
German (de)
French (fr)
Other versions
WO1991005902A2 (en
Inventor
Kurt Arnold
Wofgang Hauck
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.)
GM Pfaff AG
Original Assignee
GM Pfaff AG
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 GM Pfaff AG filed Critical GM Pfaff AG
Publication of WO1991005902A2 publication Critical patent/WO1991005902A2/en
Publication of WO1991005902A3 publication Critical patent/WO1991005902A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/22—Devices for stopping drive when sewing tools have reached a predetermined position
    • D05B69/24—Applications of devices for indicating or ascertaining sewing-tool position

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

To detect the edge (W) of a layer (N1) of the workpiece to be stitched, before the stitch-forming site of a sewing machine (1), the detection point is illuminated and the intensity of the fraction of the light reflected at the detection point and the intensity of the fraction of the light transmitted at the detection point are measured separately from each other. In each case, the measurement for which the measured value of the intensity would be expected to make the more distinct jump if the edge (W) of the workpiece to be stitched appears at the detection point is selected in order to generate a signal for detecting the edge (W) of the workpiece to be stitched. Preferably, the measurement selected is that the measured value of which has the higher amplitude before the edge (W) of the workpiece to be stitched has appeared.
PCT/EP1990/001771 1989-10-20 1990-10-19 Process and device for opto-electronic detection of an edge of a workpiece to be stitched Ceased WO1991005902A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP3934932.2 1989-10-20
DE3934932 1989-10-20
DEP4030854.5 1990-09-29
DE19904030854 DE4030854A1 (en) 1989-10-20 1990-09-29 METHOD AND DEVICE FOR OPTOELECTRONIC DETECTION OF A SEWING EDGE

Publications (2)

Publication Number Publication Date
WO1991005902A2 WO1991005902A2 (en) 1991-05-02
WO1991005902A3 true WO1991005902A3 (en) 1991-06-13

Family

ID=25886276

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/001771 Ceased WO1991005902A2 (en) 1989-10-20 1990-10-19 Process and device for opto-electronic detection of an edge of a workpiece to be stitched

Country Status (3)

Country Link
JP (1) JP2960777B2 (en)
DE (1) DE4030854A1 (en)
WO (1) WO1991005902A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107764191A (en) * 2017-11-15 2018-03-06 嘉兴扬鑫机械有限公司 Delineation device, delineation method and widen machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224314A1 (en) * 1981-09-18 1983-04-07 The Singer Co., 06904 Stamford, Conn. SELF-COMPENSATING OPTOELECTRONIC LAYER AND HEM SEALING DEVICE FOR A SEWING MACHINE
DE3323214C1 (en) * 1983-06-28 1984-10-11 Dürkoppwerke GmbH, 4800 Bielefeld Optoelectronic scanning device on a sewing machine
DE3606208A1 (en) * 1985-02-28 1986-08-28 Tokyo Juki Industrial Co., Ltd., Chofu, Tokio/Tokyo Automatic sensitivity regulator for a sewing-machine end sensor
WO1989003080A1 (en) * 1987-10-01 1989-04-06 Quick-Rotan Elektromotoren Gmbh Sensor device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514459A1 (en) * 1984-08-01 1986-02-13 Jenoptik Jena Gmbh, Ddr 6900 Jena Arrangement for measuring specular structures on a transparent background

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224314A1 (en) * 1981-09-18 1983-04-07 The Singer Co., 06904 Stamford, Conn. SELF-COMPENSATING OPTOELECTRONIC LAYER AND HEM SEALING DEVICE FOR A SEWING MACHINE
DE3323214C1 (en) * 1983-06-28 1984-10-11 Dürkoppwerke GmbH, 4800 Bielefeld Optoelectronic scanning device on a sewing machine
DE3606208A1 (en) * 1985-02-28 1986-08-28 Tokyo Juki Industrial Co., Ltd., Chofu, Tokio/Tokyo Automatic sensitivity regulator for a sewing-machine end sensor
WO1989003080A1 (en) * 1987-10-01 1989-04-06 Quick-Rotan Elektromotoren Gmbh Sensor device

Also Published As

Publication number Publication date
DE4030854C2 (en) 1992-05-07
JPH05501371A (en) 1993-03-18
WO1991005902A2 (en) 1991-05-02
DE4030854A1 (en) 1991-04-25
JP2960777B2 (en) 1999-10-12

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