EP1234904A1 - Dispositif pour la surveillance d'organes d'un métier à tricoter - Google Patents

Dispositif pour la surveillance d'organes d'un métier à tricoter Download PDF

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Publication number
EP1234904A1
EP1234904A1 EP01104827A EP01104827A EP1234904A1 EP 1234904 A1 EP1234904 A1 EP 1234904A1 EP 01104827 A EP01104827 A EP 01104827A EP 01104827 A EP01104827 A EP 01104827A EP 1234904 A1 EP1234904 A1 EP 1234904A1
Authority
EP
European Patent Office
Prior art keywords
guide body
light guide
light
recess
monitored
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.)
Withdrawn
Application number
EP01104827A
Other languages
German (de)
English (en)
Inventor
Rainer Dr. Bongartz
Torsten Schöne
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.)
Protechna Herbst GmbH and Co KG
Original Assignee
Protechna Herbst GmbH and Co KG
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 Protechna Herbst GmbH and Co KG filed Critical Protechna Herbst GmbH and Co KG
Priority to EP01104827A priority Critical patent/EP1234904A1/fr
Publication of EP1234904A1 publication Critical patent/EP1234904A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D04B35/18—Indicating, warning, or safety devices, e.g. stop motions responsive to breakage, misplacement, or malfunctioning of knitting instruments

Definitions

  • the invention relates to a device for monitoring Parts of a circular knitting machine, in particular a hosiery machine, by means of a so-called light barrier.
  • PCT / EP00 / 04316 (EP 00 935 013) is a light scanning head known for knitting machines.
  • the light scanning head is used there to monitor the needles in the knitting machine.
  • the The light scanning head has optical fibers in order to emit radiation To steer the needle. Radiation reflected on the needle received and to another via another optical fiber led electronic evaluation unit.
  • the measuring principle is based on the evaluation of radiation reflected on the needle.
  • the present invention also relates to knitting machines, especially circular knitting machines, such as hosiery machines.
  • Such machines also have the needles mentioned above other mechanical elements involved in the knitting process and they rotate with the needle ring. In particular are these are the so-called sewing hooks and the closers of the needles. these are very fine components with a thickness of fractions of a Millimeter.
  • a circular knitting machine contains a needle ring typically a few hundred to a thousand of these fine components.
  • Another serious problem is the extremely cramped space on the fine components mentioned, so that monitoring devices are difficult to position.
  • the invention seeks the above technical problems to overcome.
  • the inventive design of a light guide body with at least one reflection surface it is possible to manufacture the light guide body with extremely small dimensions and so directly on the components to be monitored, such as. B. a sewing hook or a needle closer to position, the component in the provided in the light guide body Recess protrudes and so by means of the light barrier technology known as such be monitored for breakage (“presence”) can.
  • the invention extends the recess in the direction of the longitudinal axis of the light guide body and the beam path of the light barrier extends perpendicular to this longitudinal axis. This characteristic promotes particularly compact design of the device overall, enables So small dimensions of the device in particular Direction of the measuring beam path.
  • Another preferred embodiment of the invention provides that the light of the transmitter optical fiber and the receiver optical fiber parallel to the longitudinal axis in the light guide body is led to the mirror surfaces.
  • the reflection or mirror surfaces can preferably be used as prisms are formed, the bases of the prisms deflect the incident light beam by 90 °.
  • Figures 1, 2, 3 and 4 show a device for monitoring from Z.
  • B. a sewing hook and / or a needle part, such as a needle closer, in a circular knitting machine, specifically a hosiery.
  • the sewing hook serves z. B. to, when a stocking is ready, in the thread grab and pull it out.
  • the following described monitoring device determines this and triggers an alarm as soon as possible.
  • the alarm can be in different ways Way, z. B. in the simplest form an alarm display for the operating personnel, or also in Form of the machine operation being stopped as quickly as possible.
  • Figure 1 is the part of the knitting machine to be monitored shown schematically in the form of part 10.
  • the thing to be monitored Part 10 protrudes into a light guide body 12.
  • the light guide body 12 has several functions: First, the Light guide body 12 serve that over optical fibers 14 and 16 received and returned light and record lead (to steer); on the other hand, the light guide body 12 enable a light barrier in a confined space with which to monitoring part 10 can be checked for breakage.
  • the light guide body 12 shown in the figures has, for. B. Dimensions of about 5 mm or less, especially one Diameter in this size.
  • a transmitter optical fiber 14 is electromagnetic Radiation (the term "light” is here in the sense of to understand and also detect electromagnetic radiation invisible wavelengths) in the light guide body 12 introduced and there on a reflection or mirror surface 18th reflected. There is no part 10 to be monitored on the 1, the reflected light follows the beam path 24 and is on a further mirror surface 20th reflected back down in Figure 1, so that it in the Receiver optical fiber 16 arrives and from there to a known as such evaluation electronics.
  • the part 10 to be monitored in the functional state protrudes or through which the part 10 is moved so that it interrupts the beam path 24, which is done by means of the evaluation electronics is noticeable.
  • the light guide body 12 has a longitudinal axis 26, its direction corresponds to the direction in which the part 10 in the Recess 22 protrudes.
  • the beam path 24 is perpendicular to the longitudinal axis 26.
  • the two mirror surfaces 18, 20 can be prisms 28, 30 are formed (see in particular Figure 4).
  • the prisms are thus with a very small size on the light guide body 12 put on and take in the particularly critical area near the part 10 to be monitored only a little space.
  • the bases (hypotenuses) of the prisms are for reflection mirrored.
  • bores 32, 34 formed through which the optical fibers 14, 16 to in immediate proximity of the mirror surfaces 18, 20 are pushed can. It is also possible to directly bore 32, 34 to design light-guiding channels.
  • FIG. 2 shows the side view of the light guide body 12 according to Figure 1;
  • Figure 3 shows the light guide body 12 according to Figure 2 from below, so that the holes 32, 34 can be seen are; and
  • FIG. 4 shows the light guide body 12 according to FIG 2 from the right side, so that the arrangement of the prisms too is recognizable.
  • the front surfaces of the prisms 28 facing the recess 22 30 can e.g. B. taped hole-like or slit-shaped, d. H. the beam path 24 is made to a narrow diameter limited, e.g. B. 0.5 to 3 mm.
  • Figure 5 shows a further embodiment of a device for monitoring part of a knitting machine, whereby to the above embodiment functionally the same or functionally similar Components with the same reference numerals as above and at Modification are provided with a line.
  • the recess 22 ' projects in one direction in the light guide body 12 ', which is perpendicular to the Direction in which the two optical fibers 14, 16 through the Light guide body 12 'run.
  • the arrangement according to Figure 5 requires only a single reflection surface 18 '.
  • the from the transmitter optical fiber 14 in the recess 22 ' directed light is emitted at the reflection surface 18 ' reflected and, if no component 10 to be monitored in the Recess 22 'protrudes, that is reflected on the surface 18' Light directed into the receiver optical fiber 16 and forwarded.
  • the light barrier arrangement according to FIG. 5 is characterized by a particularly compact (space-saving) Construction from.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP01104827A 2001-02-27 2001-02-27 Dispositif pour la surveillance d'organes d'un métier à tricoter Withdrawn EP1234904A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01104827A EP1234904A1 (fr) 2001-02-27 2001-02-27 Dispositif pour la surveillance d'organes d'un métier à tricoter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01104827A EP1234904A1 (fr) 2001-02-27 2001-02-27 Dispositif pour la surveillance d'organes d'un métier à tricoter

Publications (1)

Publication Number Publication Date
EP1234904A1 true EP1234904A1 (fr) 2002-08-28

Family

ID=8176622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01104827A Withdrawn EP1234904A1 (fr) 2001-02-27 2001-02-27 Dispositif pour la surveillance d'organes d'un métier à tricoter

Country Status (1)

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EP (1) EP1234904A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2237077A2 (fr) 2009-04-03 2010-10-06 BALLUFF GmbH Dispositif de barrière lumineuse
DE102010048173B3 (de) * 2010-10-13 2012-01-05 Memminger-Iro Gmbh Verfahren zur Justierung eines Sensorkopfes einer Nadelüberwachungseinrichtung und Nadelüberwachungseinrichtung
CN102517786A (zh) * 2011-12-12 2012-06-27 飞虎科技有限公司 电脑横机织针组合结构
CN103437061A (zh) * 2013-08-30 2013-12-11 中国科学院上海光学精密机械研究所 织针实时监测装置和方法
CN108060507A (zh) * 2018-01-25 2018-05-22 常州市新创智能科技有限公司 纬纱针断针检测装置及其使用方法
CN111493378A (zh) * 2020-06-08 2020-08-07 浙江广泰德达袜业有限公司 一种吸湿速干袜子制备装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1281951A (en) * 1969-07-18 1972-07-19 Electronit Ltd Circular knitting machine
US3695437A (en) * 1971-01-11 1972-10-03 Hastings Mfg Co Oil filter with improved anti-drainback valve
US4607160A (en) * 1982-09-21 1986-08-19 Omron Tateisi Electronics Co. Non-contact switching device
EP0418157A1 (fr) * 1989-09-15 1991-03-20 Centre Technique Industriel dit: INSTITUT TEXTILE DE FRANCE Dispositif endoscopique pour la détection de défauts sur métier à tricoter circulaire
US5255916A (en) * 1992-12-09 1993-10-26 Williams Electronics Games, Inc. Optical ball sensor
WO1993024691A1 (fr) * 1992-05-26 1993-12-09 Microtex S.A.S. Di Dott. L. Michetti Dispositif de controle continu des aiguilles d'un metier a tricoter pendant son fonctionnement
DE19924924A1 (de) * 1999-05-31 2000-12-07 Herbst Protechna Gmbh Lichtabtastkopf für Nadeln in Strickmaschinen, zugehöriges Lichtabtastsystem und Verfahren zum Überprüfen von Nadeln in Strickmaschinen mit dem Lichtabtastsystem

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1281951A (en) * 1969-07-18 1972-07-19 Electronit Ltd Circular knitting machine
US3695437A (en) * 1971-01-11 1972-10-03 Hastings Mfg Co Oil filter with improved anti-drainback valve
US4607160A (en) * 1982-09-21 1986-08-19 Omron Tateisi Electronics Co. Non-contact switching device
EP0418157A1 (fr) * 1989-09-15 1991-03-20 Centre Technique Industriel dit: INSTITUT TEXTILE DE FRANCE Dispositif endoscopique pour la détection de défauts sur métier à tricoter circulaire
WO1993024691A1 (fr) * 1992-05-26 1993-12-09 Microtex S.A.S. Di Dott. L. Michetti Dispositif de controle continu des aiguilles d'un metier a tricoter pendant son fonctionnement
US5255916A (en) * 1992-12-09 1993-10-26 Williams Electronics Games, Inc. Optical ball sensor
DE19924924A1 (de) * 1999-05-31 2000-12-07 Herbst Protechna Gmbh Lichtabtastkopf für Nadeln in Strickmaschinen, zugehöriges Lichtabtastsystem und Verfahren zum Überprüfen von Nadeln in Strickmaschinen mit dem Lichtabtastsystem

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2237077A2 (fr) 2009-04-03 2010-10-06 BALLUFF GmbH Dispositif de barrière lumineuse
DE102009017466A1 (de) * 2009-04-03 2010-10-07 Balluff Gmbh Lichtschrankenvorrichtung
DE102010048173B3 (de) * 2010-10-13 2012-01-05 Memminger-Iro Gmbh Verfahren zur Justierung eines Sensorkopfes einer Nadelüberwachungseinrichtung und Nadelüberwachungseinrichtung
CN102517786A (zh) * 2011-12-12 2012-06-27 飞虎科技有限公司 电脑横机织针组合结构
CN103437061A (zh) * 2013-08-30 2013-12-11 中国科学院上海光学精密机械研究所 织针实时监测装置和方法
CN103437061B (zh) * 2013-08-30 2015-02-18 中国科学院上海光学精密机械研究所 织针实时监测装置和方法
CN108060507A (zh) * 2018-01-25 2018-05-22 常州市新创智能科技有限公司 纬纱针断针检测装置及其使用方法
CN111493378A (zh) * 2020-06-08 2020-08-07 浙江广泰德达袜业有限公司 一种吸湿速干袜子制备装置

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