EP1100741B1 - Procede et dispositif pour couper un fil sur une machine a textile - Google Patents

Procede et dispositif pour couper un fil sur une machine a textile Download PDF

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Publication number
EP1100741B1
EP1100741B1 EP99928989A EP99928989A EP1100741B1 EP 1100741 B1 EP1100741 B1 EP 1100741B1 EP 99928989 A EP99928989 A EP 99928989A EP 99928989 A EP99928989 A EP 99928989A EP 1100741 B1 EP1100741 B1 EP 1100741B1
Authority
EP
European Patent Office
Prior art keywords
yarn
kinetic energy
blade
cutting
knife
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 - Lifetime
Application number
EP99928989A
Other languages
German (de)
English (en)
Other versions
EP1100741A1 (fr
Inventor
Cyrill Bucher
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.)
Uster Technologies AG
Original Assignee
Zellweger Luwa 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 Zellweger Luwa AG filed Critical Zellweger Luwa AG
Publication of EP1100741A1 publication Critical patent/EP1100741A1/fr
Application granted granted Critical
Publication of EP1100741B1 publication Critical patent/EP1100741B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/71—Arrangements for severing filamentary materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B65H63/062—Electronic slub detector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1816—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current making use of an energy accumulator

Definitions

  • the invention relates to a method and an apparatus for cutting yarn on a Textile machine, with a knife, the knife being driven by kinetic energy is supplied (see DE-A-2 132 137).
  • Such devices are particularly on textile machines, such as on winding machines arranged. There they are for cutting out errors, such as B. Dickoder Thin spots in the yarn, provided.
  • the cutting is done with a movable stored knife that pushes the yarn against a backing and when it is on it rests, severed. To do this, the knife should absorb enough kinetic energy before it hits the yarn. It is common to accelerate the knife so much that with its kinetic energy it can quickly cut through all conceivable yarns. excess Energy is destroyed on the counterhold. Or, the knife receives the according given the current available energy. Then the knife supplied energy fluctuate arbitrarily.
  • a disadvantage of such known devices is that the cutting force of the Knife is designed for the thickest yarn that is expected to be processed by the device could be, or that quite simply the drive always its full or the delivers the currently available service. This practically results in the knife is worn too strongly or too quickly and that the whole device itself is unnecessary experiences strong shocks.
  • This group includes properties of the material from which the gam is made, diameter, cross-section, mass of the yarn, etc., as well as properties of the device used for cutting.
  • One such property is, for example, the inertia of the masses moved with the knife and the knife itself, the characteristic of the frictional resistance of the moving Knife etc.
  • a property such as the diameter or the cross section of the chamois immediately before the cut i.e. continuously measured and the The measured value is taken into account when dimensioning the supplied energy. Therefore the drive has a device for measuring the kinetic energy of the knife.
  • Fig. 1 shows the most important parts of the device, in particular a carrier 1, a moving coil 2 with the coil 3 and the plunger 4, which is a drive for a knife holder 5 and thus also form for a knife 6 and a counterhold or anvil 7, the part of the carrier 1.
  • the anvil 7 has a hardened surface 8, in front of which a yarn 9, for example is moved past in the direction of an arrow 10. Parts can be seen on carrier 1 of two screw connections 11 and 12, via which the device on a textile machine can be attached.
  • the knife 6 is preferably fixed to the knife holder 5 connected, which in turn here with a releasable positive connection 13
  • Submersible anchor 4 is connected. It is known per se and therefore not shown here that the coil has 3 turns that are not shown in this figure Control circuit 14 are connected.
  • Fig. 2 shows a control circuit 14 as a device for measuring the kinetic energy of the knife 6, which is connected via a line 15 to a cutting device 16.
  • the Cutting device 16 is preferably constructed as shown in FIG. 1.
  • the administration 15 is connected via a line 19 and a switching element 17 to an energy store 18, formed here as a capacitor, connected to a voltage converter 20 connected. This in turn is via a line 21 and a further switching element 22 connected to a feed circuit 23.
  • the switching elements 22 and 17 are Connected via lines 24 and 25 to a controller 26, which also has two inputs 27 and has 28.
  • the input 27 is connected to the line 19 and the input 28 is either connected to a gamma meter 29 or a data input 30.
  • the voltage converter 20 can be used, for example, as a DC converter or as a charge pump be trained.
  • the controller 26 a corresponding to the Programmed microprocessor described below uses.
  • the feed circuit 23, which is part of a textile machine, for example, supplies a feed voltage from e.g. 30V - 60V to line 21 and switching element 22. In closed State is thus fed the voltage converter 20, which is the applied Converts voltage, i.e. increases or limits and via line 19 the capacitor 18 charges
  • a signal is present at the controller 26, which is a property of the yarn and / or the device (inertia, friction, etc.).
  • the chamois can depend on the quality of the material or it can depend on the quantity of the material. Properties belong to the first group such as tensile strength, modulus of elasticity, internal damping, the energy absorption capacity, or just the properties of the raw material used and the processing chosen, etc.
  • the controller 26 determines whether the switching element 22 is opened must, because the capacitor 18, for example, the existing cross section and material of the yarn is sufficiently charged.
  • the switching element 17 is closed when a cut needs to be made by the controller 26 or one other element is triggered. Then the coil 3 by the voltage in the Line 15 is excited so that the plunger 4 moves towards the anvil 7 in FIG. 1 and the knife 6 pushes the yarn 9 against the surface 8 and separates it there.
  • the switching element 17 is passed over line 25 after a time sufficient for one cut, e.g. after 10 Milliseconds, opened again.
  • the switching element 22 is then switched on again via the line 24 closed until the capacitor 18 has the desired charging voltage again.
  • the charging voltage is adjusted if it is proportional to the resistance that the Oppose the cut by the knife. This resistance is great if that Yarn has a large cross-section, i.e. many and / or thick or tough fibers, has, or small if the yarn has a small cross-section, i.e. few and / or thin or soft Has fibers.
  • a suitable input via the data input 30 can also other factors dependent on the material used are taken into account. For example the tensile strength or hairiness of the yarn previously measured in the laboratory, or any other property that affects the force required for a cut. In this way, the kinetic energy can be supplied to the knife in doses and depending on it the cross-section or other properties of the yarn.
  • the cross section is measured before cutting, for example, and the measurement value obtained in this way used to measure the kinetic energy by the controller 26.
  • the kinetic energy is thus previously used as an electrical voltage, for example in the capacitor 18 saved.
  • the electrical voltage can not only cross section of the yarn but also the mass of the knife 6 and other moving parts 4, 5 or other properties of the drive.
  • the device can also be designed such that the function of the switching element 22 is perceived in the voltage converter 20. In this case, the switching element 20 falls away and the line 24 connects the controller 26 directly to the voltage converter 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Coiling Of Filamentary Materials In General (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de couper un fil (9) sur une machine à textile, comportant une lame (6) à laquelle est acheminée de l'énergie cinétique par l'intermédiaire d'un mécanisme de commande (2, 3, 4). Afin d'assurer en permanence la production d'une force de coupe suffisante, mais pas excessive, l'énergie cinétique est acheminée de manière dosée et en fonction des propriétés du fil et/ou du dispositif. A cet effet, le mécanisme de commande présente un dispositif (14) permettant de mesurer l'énergie cinétique de la lame.

Claims (8)

  1. Procédé pour couper du fil sur une machine textile, avec un couteau (6), où est amenée au couteau de l'énergie cinétique, caractérisé en ce que l'énergie cinétique est amenée d'une manière dosée et est dimensionnée en fonction d'au moins une caractéristique d'un groupe de caractéristiques, comprenant des caractéristiques du matériau dans lequel est constitué le fil (9), de la masse, du diamètre, de la section transversale et du dispositif qui est utilisé pour la coupe.
  2. Procédé selon la revendication 1, caractérisé en ce qu'une caractéristique est mesurée continuellement directement avant la coupe au fil et que la valeur de mesure ainsi obtenue est utilisée pour dimensionner l'énergie cinétique.
  3. Procédé selon la revendication 1, caractérisé en ce que l'énergie cinétique est stockée préalablement comme tension électrique.
  4. Procédé selon la revendication 3, caractérisé en ce que la tension électrique est prévue proportionnellement à la section transversale du fil et à la masse du couteau.
  5. Dispositif pour couper du fil sur une machine textile, avec un couteau (6) et un entraínement (2, 3, 4) pour le couteau, caractérisé en ce que l'entraínement présente un dispositif (14) pour dimensionner l'énergie cinétique du couteau.
  6. Dispositif selon la revendication 5, caractérisé en ce que le dispositif pour le dimensionnement de l'énergie cinétique présente un circuit de commande (26) et un dispositif de stockage d'énergie (18), où le circuit de commande dose l'énergie stockée.
  7. Dispositif selon la revendication 5, caractérisé en ce qu'un condensateur est prévu comme dispositif de stockage d'énergie.
  8. Dispositif selon la revendication 5, caractérisé en ce qu'il est prévu comme circuit de commande un microprocesseur programmé d'une manière appropriée.
EP99928989A 1998-07-24 1999-07-19 Procede et dispositif pour couper un fil sur une machine a textile Expired - Lifetime EP1100741B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH156198 1998-07-24
CH156198 1998-07-24
PCT/CH1999/000329 WO2000006479A1 (fr) 1998-07-24 1999-07-19 Procede et dispositif pour couper un fil sur une machine a textile

Publications (2)

Publication Number Publication Date
EP1100741A1 EP1100741A1 (fr) 2001-05-23
EP1100741B1 true EP1100741B1 (fr) 2003-03-19

Family

ID=4213302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99928989A Expired - Lifetime EP1100741B1 (fr) 1998-07-24 1999-07-19 Procede et dispositif pour couper un fil sur une machine a textile

Country Status (6)

Country Link
US (1) US6381941B1 (fr)
EP (1) EP1100741B1 (fr)
JP (1) JP2002521294A (fr)
CN (1) CN1211269C (fr)
DE (1) DE59904646D1 (fr)
WO (1) WO2000006479A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH699425B1 (de) * 2007-06-14 2010-03-15 Uster Technologies Ag Vorrichtung zum Schneiden eines fadenförmigen Körpers.
JP5152541B2 (ja) * 2007-08-07 2013-02-27 ウステル・テヒノロジーズ・アクチエンゲゼルシヤフト 糸状体の切断装置
CH699753A1 (de) * 2008-10-16 2010-04-30 Uster Technologies Ag Vorrichtung und verfahren zum ausmessen einer kapazität.
IT1402740B1 (it) * 2010-10-19 2013-09-18 Btsr Int Spa Dispositivo di taglio di un filo tessile durante la sua alimentazione ad un elemento operatore

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2132137A1 (de) * 1971-06-29 1973-01-18 R & M Leuze Fa Elektronischer garnreiniger
CH538418A (de) * 1971-11-26 1973-06-30 Zellweger Uster Ag Schneidvorrichtung für Garnreiniger
FR2217441B1 (fr) * 1973-02-08 1975-03-07 Rhone Poulenc Textile
GB1600164A (en) * 1978-05-25 1981-10-14 Thorn Automation Ltd Yarn clearer assemblies
CH649270A5 (de) * 1981-02-11 1985-05-15 Peyer Siegfried Verfahren zur schnittsteuerung fuer elektronische garnreiniger.
GB2193978A (en) * 1986-07-17 1988-02-24 Brierley John L Ltd Yarn clearers
DE3644433C2 (de) * 1986-12-24 1995-10-19 Schlafhorst & Co W Verfahren und Vorrichtung zum Steuern einer Spulstelle einer Kreuzspulen herstellenden Textilmaschine
JPH0314711U (fr) * 1989-06-23 1991-02-14
DE4310037C1 (de) * 1993-03-27 1993-12-09 Beermann Kg Martor Argentax Messer mit verschiebbarer Messerklinge
JPH1018131A (ja) * 1996-06-27 1998-01-20 Murata Mach Ltd 糸の切断装置

Also Published As

Publication number Publication date
CN1211269C (zh) 2005-07-20
JP2002521294A (ja) 2002-07-16
DE59904646D1 (de) 2003-04-24
WO2000006479A1 (fr) 2000-02-10
CN1311751A (zh) 2001-09-05
US6381941B1 (en) 2002-05-07
EP1100741A1 (fr) 2001-05-23

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