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WO1986000347A1 - Procede et dispositif de detection de fibres tricotees/tissees - Google Patents

Procede et dispositif de detection de fibres tricotees/tissees Download PDF

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Publication number
WO1986000347A1
WO1986000347A1 PCT/JP1985/000209 JP8500209W WO8600347A1 WO 1986000347 A1 WO1986000347 A1 WO 1986000347A1 JP 8500209 W JP8500209 W JP 8500209W WO 8600347 A1 WO8600347 A1 WO 8600347A1
Authority
WO
WIPO (PCT)
Prior art keywords
cloth
circuit
knit
woven fabric
knitting
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/JP1985/000209
Other languages
English (en)
Japanese (ja)
Inventor
Kengo Shiomi
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.)
Juki Corp
Original Assignee
Tokyo Juki Industrial 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 Tokyo Juki Industrial Co Ltd filed Critical Tokyo Juki Industrial Co Ltd
Publication of WO1986000347A1 publication Critical patent/WO1986000347A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B33/00—Devices incorporated in sewing machines for supplying or removing the work
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H3/00—Inspecting textile materials
    • D06H3/08—Inspecting textile materials by photo-electric or television means

Definitions

  • the present invention relates to a detection method and a device for detecting the amount of movement of a knit or woven fabric, the presence or absence thereof, and the like.
  • a measuring wheel is elastically brought into contact with a moving cloth. Then, the measuring wheel is rotated with the movement of the cloth, for example, when the cloth moves one step and the measuring wheel rotates, one pulse is generated, the pulse is generated, and the number of pulses is counted.
  • One that detects the amount of cloth movement is known.
  • this conventional movement amount detecting means is configured such that the measuring wheel rotates in contact with the cloth, so that a slight slip occurs between the cloth and the measuring wheel, or the measurement based on a change in the moving speed of the cloth. Due to the influence of the rotational inertia of the wheel, etc., an error occurs between the actual movement amount of the cloth and the measurement movement amount by the measuring wheel, and there is a disadvantage that the accurate movement amount cannot be measured.
  • FIG. 1 is a schematic front view of the apparatus
  • FIG. 2 is a block diagram showing the first embodiment
  • FIG. 3 is an image of a cloth formed on an image forming surface
  • FIG. 4 is a second embodiment.
  • FIG. 5 is a time chart for measuring the distance of one pitch of a stitch of a cloth
  • FIG. 6 is a block diagram showing a third embodiment.
  • Reference numeral 1 denotes a sewing machine frame.
  • the needle bar 4 having a needle 3 having a needle 3 at a lower end thereof is moved up and down in conjunction with rotation of a metal 2 and a main shaft (not shown) which always receives a downward pressing force E.
  • Reference numeral 7 denotes a light shield for eliminating the influence of extraneous light. (Right side in Fig. 1) and place it above the cloth, and form an imaging surface 8 on the upper surface.
  • Reference numeral 9 denotes an optical magnifier, which is disposed below the light shield and expands the reflected light of the light emitted from the light source 10 placed on the cloth to the cloth 5 as shown in FIG. An image is formed on the image plane 8.
  • An optical guide 11 has one end connected to the upper end of the image plane 8 and the other end connected to a light receiving element 12 as a detecting means.
  • FIG. 2 is a block diagram for processing a signal from the light receiving element 12, 13 is an amplification circuit, and 14 is a peak detector for judging the level of light.
  • Reference numeral 15 denotes an AND circuit, which is connected to a peak detector 14 on one side of the input side and outputs an output signal only when the output signal of the light receiving element 12 is required on the other side of the input side. Connect the sequence circuit 16 that generates When an output signal is input from the peak detector 14 and the sequence circuit 16, the AND circuit 15 opens the AND circuit and outputs the output from the peak detector 14. Let it pass. Is an example of a processing circuit.
  • Reference numeral 17 denotes a power counter, which counts an output signal from the AND circuit 15.
  • Reference numeral 18 denotes a storage circuit, which stores the characteristics of the cloth, for example, the distance between adjacent yarns, that is, the weave pitch, calculated from the number of yarns to be driven or the number of braids per unit length of fiber.
  • Reference numeral 19 denotes an arithmetic circuit, which multiplies the number of signals from the counter '-17 by the characteristic of the cloth 5 from the storage circuit 18, that is, the distance between adjacent wefts X, and moves the cloth 5 Is calculated.
  • the first embodiment has the above configuration, and the operation will be described next.
  • the characteristics of the cloth 5 used for example, the length of the weave pitch of the cloth 5 used are stored in the storage circuit 18.
  • the sewing machine is driven after the cloth 5 to be used is arranged below the presser foot 2 of the sewing machine as shown in FIG.
  • the cloth 5 moves to the left in FIG. 1 by the cooperation of the four movements of the feed dog 6 and the presser foot 2, the needle 3 moves up and down, and the cloth 5 is sewn.
  • the texture of the cloth 5 is enlarged as shown in FIG.
  • the image formed on the image plane 8 moves, light and dark signals of light are input to the input side of the light receiving element 12 via the light guide 11 at every eye pitch, and the light receiving element 12 From the output side, high-level and low-level power signals corresponding to light brightness and darkness are output alternately.
  • the peak detector 14 determines the high or low level of the voltage, and outputs only one level, for example, only the high level signal. Output as signal and input to one input terminal of AND circuit 15.
  • a drive signal is generated and input to the other terminal of the AND circuit 15.
  • the AND circuit 15 When two signals, an input signal from the peak detector 14 and an input signal from the sequence circuit 15, are input to the AND circuit 15, the AND circuit 15 outputs the signal. Generates an output signal for each weave pitch of the cloth 5.
  • the arithmetic circuit 19 multiplies the count value from the counter 17 by the length of the first pitch stored in the memory circuit 18 to calculate the moving distance of the cloth 5, and then calculates the moving distance electrically. Controls cloth feeding based on information.
  • FIG. 4 shows a second embodiment.
  • Reference numeral 20 denotes an image sensor (solid-state imaging device) which receives a signal from the light guide 11 shown in FIG.
  • Reference numeral 21 denotes an amplification circuit
  • reference numeral 14 denotes a peak detector.
  • FIG. 5 of the high and low level outputs output from the amplification circuit 21 at every pitch of the weave, Generates a pulse corresponding to one of the high output peak and the low output peak.
  • Reference numeral 15 and 25 are end circuits
  • 26 is an OR circuit
  • 17 is a counter
  • 19 is an arithmetic circuit
  • 1S is a sequence circuit similar to that in Fig. 1.
  • An output signal is generated only when the output signal from the detector 14 is required.
  • Reference numeral 23 denotes a pulse generation circuit for generating a pulse for driving the image sensor 20.
  • the pulse and the output of the image element of the image sensor 20 have a one-to-one correspondence.
  • Reference numeral 27 denotes a storage circuit, which stores a value of one pitch (distance) of a pixel element unique to the image sensor, for example, one pitch 14 « ⁇ .
  • This embodiment has the above configuration.
  • the cloth pitch of the cloth is measured before the detection and the numerical value is recorded. 'That is, the cloth whose movement amount is to be detected is e
  • the output of the peak detector 14 passes through the optical magnifier 9, the image sensor 20 and the amplification circuit 21.
  • the pulse of the pulse generator 23, which is proportional to, passes through the AND circuit 25 and the OR circuit 26, and the number of the pulses is counted by the counter 17. Since the output of the image sensor 20 and the pulse of the pulse generator 23 correspond one-to-one as described above, the number of pulses counted by the counter 17 and the above-mentioned image
  • the arithmetic circuit 19 calculates the distance of one pitch (for example, 14 tfm) of the image element of the sensor-, calculates the distance of one pitch of the cloth texture, and stores the numerical value. :
  • the circuit calculates the distance of one pitch (for example, 14 tfm) of the image element of the sensor-
  • an i signal is sent from the sequence circuit 16 to the input of the AND circuit 15, the gate of the AND circuit 15 is opened, and the AND circuit is opened. Close circuit 25.
  • the peak detector 14 generates an output signal by detecting only a signal, for example, as shown in FIG. It is counted by the counter 17 through the circuit 15 and the calculated value and the distance between the nip of the cloth weave measured in advance and stored in the storage circuit 27 are calculated by a calculation circuit.
  • FIG. 6 shows a third embodiment.
  • Reference numeral 28 denotes a light receiving element such as a phototransistor, a photo diode, or a image sensor for receiving a signal from the optical guide 11 shown in FIG. 21 is an amplifier, 14 is a peak detector, 15 is an AND circuit, 16 is a sequence circuit, and 29 is a pulse detector.
  • the brightness of the light is input to the light receiving element 28 at every pitch of the weave, and a high level f is output from the light receiving element 28.
  • a low level electrical signal is output.
  • This signal is amplified by the amplifier 21 and the peak detector 14 generates a pulse corresponding to only one of the high level signal and the low level signal in the same manner as in FIG. And output it to AND circuit 15.
  • the AND circuit is opened by the output signal from the sequence circuit 16 and the output of the peak detector 22 is turned on. Through the AND circuit 15, signals of 5 ′′,..., £ detected by the peak detector are output alternately.
  • the output signal from the AND circuit 15 is output at time intervals corresponding to the moving speed of the cloth 5 while the cloth 5 is moving under the optical magnifier 9 shown in FIG. You.
  • the presence or absence of a signal is detected by the pulse detector 29, whereby the end of the moving cloth 5 can be detected, and a stop signal of the mechanism can be obtained.
  • the present invention has a configuration in which the lightness and darkness of a knitting / woven fabric in a direction intersecting with the moving direction of a moving knitting / woven fabric are detected, and the movement amount and presence / absence of the knitting / woven fabric are detected. Since moving knitting can be detected in a non-contact state with the fabric, the knitting is always accurate without being affected by changes in the moving speed or moving direction of the knitting. Is effective in detecting
  • the detecting means can detect the knitting and woven fabric in a non-contact state, it is necessary to stop the sewing machine in the middle of sewing and turn the knitting and woven fabric around the needle. Since it can rotate smoothly without being hindered, it also has the effect of excellent workability.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

L'aspect brillant de fibres tricotées/tissées dans un sens transversal à angle droit par rapport à la direction de déplacement des fibres tricotées/tissées en mouvement est converti en signaux électriques impulsionnels en faisant passer la lumière provenant d'une source lumineuse à travers une loupe optique et un photodétecteur, et les signaux impulsionnels sont comptés. Les pas de texture sont mémorisés et multipliés par le nombre de signaux d'un compteur utilisant un circuit d'opération permettant de calculer la distance de déplacement des fibres. Sont également décrits un procédé et un dispositif de détection de fibres tricotées/tissées pouvant détecter non seulement la distance de déplacement, mais également la présence de fibres tricotées/tissées.
PCT/JP1985/000209 1984-06-30 1985-04-16 Procede et dispositif de detection de fibres tricotees/tissees Ceased WO1986000347A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59135467A JPS6114505A (ja) 1984-06-30 1984-06-30 編・織物の検知方法と装置
JP59/135467 1984-06-30

Publications (1)

Publication Number Publication Date
WO1986000347A1 true WO1986000347A1 (fr) 1986-01-16

Family

ID=15152392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1985/000209 Ceased WO1986000347A1 (fr) 1984-06-30 1985-04-16 Procede et dispositif de detection de fibres tricotees/tissees

Country Status (2)

Country Link
JP (1) JPS6114505A (fr)
WO (1) WO1986000347A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655149A (en) * 1986-04-29 1987-04-07 Usm Corporation Optical sensor for automatic sewing machine
WO1989006715A1 (fr) * 1988-01-21 1989-07-27 Dürkopp Akler Aktiengesellschaft Dispositif de determination de l'avancement reel effectue par un organe d'avancement d'une machine a coudre industrielle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4724938B2 (ja) * 2001-03-29 2011-07-13 ブラザー工業株式会社 ミシン
EP1738007B1 (fr) * 2003-12-15 2012-09-19 BERNINA International AG Procede et dispositif pour commander le mouvement de l'aiguille d'une machine a coudre
CN110749939B (zh) * 2018-07-23 2021-09-24 杰克缝纫机股份有限公司 一种缝纫机的布料检测方法及系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247708B2 (fr) * 1972-05-15 1977-12-05
JPS5310878B2 (fr) * 1972-03-24 1978-04-17
JPS579894U (fr) * 1980-06-17 1982-01-19
JPS5898471A (ja) * 1981-11-30 1983-06-11 土田　勇 布目数の検知方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884063A (en) * 1974-02-28 1975-05-20 Lear Siegler Inc Gear rolling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5310878B2 (fr) * 1972-03-24 1978-04-17
JPS5247708B2 (fr) * 1972-05-15 1977-12-05
JPS579894U (fr) * 1980-06-17 1982-01-19
JPS5898471A (ja) * 1981-11-30 1983-06-11 土田　勇 布目数の検知方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655149A (en) * 1986-04-29 1987-04-07 Usm Corporation Optical sensor for automatic sewing machine
WO1989006715A1 (fr) * 1988-01-21 1989-07-27 Dürkopp Akler Aktiengesellschaft Dispositif de determination de l'avancement reel effectue par un organe d'avancement d'une machine a coudre industrielle
DE3801623C1 (fr) * 1988-01-21 1989-08-24 Kochs Adler Ag

Also Published As

Publication number Publication date
JPS6114505A (ja) 1986-01-22

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