EP0962571A3 - Method for determining the position of magnetoelectric selectors for needles of the needle cylinder in knitting machines for hosiery and the like - Google Patents

Method for determining the position of magnetoelectric selectors for needles of the needle cylinder in knitting machines for hosiery and the like Download PDF

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Publication number
EP0962571A3
EP0962571A3 EP99109277A EP99109277A EP0962571A3 EP 0962571 A3 EP0962571 A3 EP 0962571A3 EP 99109277 A EP99109277 A EP 99109277A EP 99109277 A EP99109277 A EP 99109277A EP 0962571 A3 EP0962571 A3 EP 0962571A3
Authority
EP
European Patent Office
Prior art keywords
selectors
needle cylinder
order
passage
hosiery
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
EP99109277A
Other languages
German (de)
French (fr)
Other versions
EP0962571A2 (en
Inventor
Francesco Lonati
Tiberio Lonati
Ettore Lonati
Fausto Lonati
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.)
Macchine Tessili Circolari MATEC SpA
Original Assignee
Macchine Tessili Circolari MATEC SpA
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 Macchine Tessili Circolari MATEC SpA filed Critical Macchine Tessili Circolari MATEC SpA
Publication of EP0962571A2 publication Critical patent/EP0962571A2/en
Publication of EP0962571A3 publication Critical patent/EP0962571A3/en
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • General Factory Administration (AREA)

Abstract

A method for determining the position of magnetoelectric selectors around the needle cylinder in knitting machines for hosiery and the like which comprise a needle cylinder (11) in the curved surface of which there is a plurality of axial slots (12), each slot (12) accommodating a needle (2) and at least one selection element (1), and selectors (3) which comprise permanent magnets (4) and coils (5) which laterally face the needle cylinder (11) at the level of the selection elements (1), comprising the following steps:
  • generating electromagnetic disturbances, by way of the rotation of the needle cylinder (11) and the passage of the selection elements (1) at a selector (3), in order to obtain electric signals which represent the passage of each selection element (1);
  • sampling each one of the electric signals starting from a zero value of an encoder (10) connected to the needle cylinder (11) and storing the samples obtained at each elementary step (14) of the encoder (10);
  • analyzing each one of the signals in order to detect the times of passage in front of each one of the selectors (3) and correlating the times with the samples in order to determine the position of the selectors (3) with respect to the selection elements (1) of the needle cylinder (11), so as to determine times for sending actuation signals to the selectors (3) in order to select chosen needles (2) in each case.
    • Figure 00000001
    EP99109277A 1998-06-03 1999-05-27 Method for determining the position of magnetoelectric selectors for needles of the needle cylinder in knitting machines for hosiery and the like Pending EP0962571A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    ITMI981227 ITMI981227A1 (en) 1998-06-03 1998-06-03 PROCEDURE FOR DETERMINING THE POSITION OF MAGNETO-ELECTRIC SELECTORS OF NEEDLES OF THE NEEDLE CYLINDER IN SHOE MAKING MACHINES
    ITMI981227 1998-06-03

    Publications (2)

    Publication Number Publication Date
    EP0962571A2 EP0962571A2 (en) 1999-12-08
    EP0962571A3 true EP0962571A3 (en) 2000-11-08

    Family

    ID=11380152

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99109277A Pending EP0962571A3 (en) 1998-06-03 1999-05-27 Method for determining the position of magnetoelectric selectors for needles of the needle cylinder in knitting machines for hosiery and the like

    Country Status (2)

    Country Link
    EP (1) EP0962571A3 (en)
    IT (1) ITMI981227A1 (en)

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    IT1314032B1 (en) * 1999-10-07 2002-12-03 Matec Spa SELF-LEARNING PROCEDURE OF THE POSITION OF ELECTROMECHANICAL ACTUATORS, IN PARTICULAR FOR CIRCULAR AND TEXTILE MACHINES
    ITMI20061487A1 (en) * 2006-07-27 2008-01-28 Santoni & C Spa PROCEDURE FOR THE AUTOMATED DETERMINATION OF THE DISASTER ANGLE BETWEEN THE ZERO OF THE NEEDLE CYLINDER AND THE ZERO ENCODER, IN A CIRCULAR MACHINE FOR KNITWEAR OR FOR FOOTWEAR.

    Citations (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2142362A5 (en) * 1971-06-16 1973-01-26 Morat Gmbh Franz
    DE2511338A1 (en) * 1974-03-14 1975-09-18 Toyoda Automatic Loom Works SYNCHRONIZATION SIGNAL GENERATOR FOR HIGH SPEED CIRCULAR KNITTING MACHINES
    US4020655A (en) * 1975-01-22 1977-05-03 Centre Technique Industriel Dit: Institut Textile De France Device for detecting defects in needles on a knitting loom which is in operation
    DE2730238A1 (en) * 1976-08-17 1978-02-23 Wirkmaschinenbau Karl Marx Veb METHOD AND ARRANGEMENT FOR MEASURING, DISPLAYING AND / OR RECORDING THE MOVEMENT PROCESSES OR CHANGES IN MOVING MACHINE PARTS
    DE2738364A1 (en) * 1976-08-28 1978-03-09 Wildt Mellor Bromley Ltd Knitting machine control - clears command transmission from memory to needle selection magnets through optical transducers and logic circuitry
    US5186028A (en) * 1989-05-12 1993-02-16 Precision Fukuhara Works, Ltd. Apparatus and method for controlling selectable knitting machine mechanism
    US5568071A (en) * 1990-01-25 1996-10-22 Nippon Soken Inc. Pulse phase difference encoding circuit

    Patent Citations (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2142362A5 (en) * 1971-06-16 1973-01-26 Morat Gmbh Franz
    DE2511338A1 (en) * 1974-03-14 1975-09-18 Toyoda Automatic Loom Works SYNCHRONIZATION SIGNAL GENERATOR FOR HIGH SPEED CIRCULAR KNITTING MACHINES
    US4020655A (en) * 1975-01-22 1977-05-03 Centre Technique Industriel Dit: Institut Textile De France Device for detecting defects in needles on a knitting loom which is in operation
    DE2730238A1 (en) * 1976-08-17 1978-02-23 Wirkmaschinenbau Karl Marx Veb METHOD AND ARRANGEMENT FOR MEASURING, DISPLAYING AND / OR RECORDING THE MOVEMENT PROCESSES OR CHANGES IN MOVING MACHINE PARTS
    DE2738364A1 (en) * 1976-08-28 1978-03-09 Wildt Mellor Bromley Ltd Knitting machine control - clears command transmission from memory to needle selection magnets through optical transducers and logic circuitry
    US5186028A (en) * 1989-05-12 1993-02-16 Precision Fukuhara Works, Ltd. Apparatus and method for controlling selectable knitting machine mechanism
    US5568071A (en) * 1990-01-25 1996-10-22 Nippon Soken Inc. Pulse phase difference encoding circuit

    Also Published As

    Publication number Publication date
    EP0962571A2 (en) 1999-12-08
    ITMI981227A1 (en) 1999-12-03

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