EP1194625B1 - Fournisseur de fil a element d'arret a poids allege - Google Patents

Fournisseur de fil a element d'arret a poids allege Download PDF

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Publication number
EP1194625B1
EP1194625B1 EP00958107A EP00958107A EP1194625B1 EP 1194625 B1 EP1194625 B1 EP 1194625B1 EP 00958107 A EP00958107 A EP 00958107A EP 00958107 A EP00958107 A EP 00958107A EP 1194625 B1 EP1194625 B1 EP 1194625B1
Authority
EP
European Patent Office
Prior art keywords
lever
thread
feed device
spring element
yarn
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
EP00958107A
Other languages
German (de)
English (en)
Other versions
EP1194625A1 (fr
Inventor
Richard Kaufmann
Hermann Schmodde
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.)
Memminger IRO GmbH
Original Assignee
Memminger IRO GmbH
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 Memminger IRO GmbH filed Critical Memminger IRO GmbH
Publication of EP1194625A1 publication Critical patent/EP1194625A1/fr
Application granted granted Critical
Publication of EP1194625B1 publication Critical patent/EP1194625B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices

Definitions

  • the invention relates to a yarn feeding device with the features of the preamble of claim 1.
  • At yarn feeding devices elements are often provided to monitor whether the current to the or from the yarn feeding device thread is properly present and whether the supplied from the yarn feeding device thread is delivered in the correct amount or with the right voltage.
  • bow-shaped levers are often provided, which are pivotally mounted on the yarn feeding device and load with one end on the thread.
  • Such a yarn feeding device is, for example, from the U.S. Patent 5,860,298 known.
  • the yarn feeding device has a thread supply drum attached to a vertical shaft, which is arranged in a yarn path.
  • the yarn feeler levers are arranged which extend obliquely downwards and rest with their free end on the thread. Tear the thread or is in the thread run path in question too large amount of thread available, the levers pivot under the action of their own weight down and actuate switch that can serve, for example, to park the downstream textile machine.
  • the levers pivot under the effect of their own weight. This must, in order to achieve a reliable pivoting movement even if the yarn feeding device under practical operating conditions of some contamination, have a minimum weight. On the other hand, this leads to an increased friction on the yarn feeler lever, which can be disadvantageous especially for thin and / or delicate threads. If particularly small thread tensions are desired, problems may arise from too great a bearing force in that the thread feeler lever tightens the thread. The minimum thread tension must be so high that the thread lifts the thread feeler lever.
  • the lever pivotally mounted on the base support is connected to a relief device which reduces the weight of the lever at least in part of its pivoting range by means of spring force.
  • the relief device thus results in that the lever is loaded with a comparatively reduced force on the thread.
  • the friction between the thread and the relevant point of the lever can be reduced.
  • the reduction of the weight of the lever is preferably dependent on the pivot angle.
  • a deflection-dependent, non-linearly related to the deflection angle of the lever Auflastkraft on the thread, realize. This can increase the trigger safety, even if the yarn feeder is subject to contamination.
  • Spring elements for generating a force opposing the weight allow weight to be relieved without appreciably increasing the moment of inertia of the lever, so that it can react quickly to yarn breakage or decreasing yarn tension.
  • the weight relief compensates for their weight at least partially. By the ceramic parts, the life of the parts in contact with the thread is increased.
  • the spring element preferably acts on the lever via such a lever arm that a neutral point is present in the swivel area, in which the spring element does not introduce any torque into the lever. In this neutral point, the torque reverses its sign, so that the spring element switches from a weight reduction to an additional load. This can increase the shutdown safety.
  • the spring element is preferably part of an electrical switch, so that no additional switch actuating forces would have to be applied.
  • the force generated to relieve the weight of the lever is also the shutdown. This has the significant advantage that the full (not relieved and not reduced) weight of the lever is available to operate the switch, although this is weight relieved from the viewpoint of the thread.
  • the spring element may, for example, be formed by a U-shaped bending spring. This can be advantageously additionally use as a switching element. If the bending spring is relatively long-legged, ie, the legs are longer than their distance from each other, the bending spring element swings relatively strong even with a slight pivoting movement of the lever. It can be used as a switching element of a switch, with the possible translation, ie the relatively stronger pivoting movement of the spiral spring compared to the pivotal movement of the lever well and clearly defined switching points are obtained.
  • FIG. 1 is a yarn feeding device 1 illustrated, which serves to deliver a thread 2 to a not further illustrated textile machine.
  • the yarn feeding device 1 has a base support 3, which is to be connected via a fastening device 4 with the textile machine or a holder provided on this and forms a two-shell housing.
  • a thread supply drum 5 is provided via a vertically arranged, rotatably mounted shaft, which is connected to one end of the shaft. With its other end, the shaft via a clutch plate 6 with drive pulleys 7, 8 can be coupled.
  • the thread 2 wraps around the thread supply drum 5 several times and, if this is driven in rotation, supplied positively to the downstream textile machine.
  • yarn guide elements 9, 11 are arranged in its path. These include an open Fadeneinlaufbaum 12, a thread braking device 14 and arranged between the yarn braking device 14 and the yarn supply drum 5 inlet eye 15th
  • a yarn inlet-side sensing lever 16 is disposed between the yarn braking device 14 and the inlet eye 15.
  • the feeler lever 16 is bow-shaped. It engages around with two legs 17, the base support 3 and is pivotally mounted on or in this about a pivot axis 18. With its end 19, which may be provided with a wear-reducing coating or a wear-reducing element such as a ceramic sleeve or the like., The thread feeler lever 16 loads on the thread 2. This is in particular FIG. 2 seen.
  • a further sensing lever 21 is provided on the outlet side, which is mounted pivotably about a horizontal pivot axis 22 on the base support 3.
  • the thread feeler lever 21 is also bow-shaped and carries at its lower free end an eyelet 23 which is formed of a durable material, such as. Ceramic.
  • the eyelet 23 is arranged substantially between two belonging to the thread guide elements 11 eyelets 24, 25 and loads on the thread 2. When this is stretched, he raises the eyelet 23 between the yarn guide eyelets 24, 25.
  • the eyelet 23 has in the Thread pad a very large radius. As a result, sharp thread deflections are avoided.
  • the eyelet 23 is largely wear-resistant to the current thread, but has a not insignificant mass.
  • the eyelet 23 may also be a ceramic-coated molded element, which, however, also increases the weight of the Abstellelements.
  • Both levers 16, 21 are lifted by the thread 2 from its free hanging position out. If the thread tension drops, the levers 16, 21 pivot downwards. They actuate an electrical switch which is in communication with arranged in the region of the fastening device 4 contact elements 26. In addition, an indicator lamp 27 is driven to signal the occurred state.
  • the yarn feeler levers 16, 21 are weight relieved. This means that they do not rest on the thread 2 with all the force caused by their weight.
  • a relief device 31 is illustrated, the lever 16 with a by an arrow 32 indicated torque applied, which counteracts the caused by the weight of the lever 16 torque (arrow 33).
  • a spring element 34 which is designed as a compression spring. It is formed by a two legs 35, 36 having bending spring 37 made of a spring metal. The two legs 35, 36 are angled away from each other.
  • the lever 16 is connected to a body 38 which is arranged concentrically to the axis of rotation 18 and has a bearing recess 39 on its side facing the bending spring 37. This takes up the free end of the leg 36.
  • the other leg 35 is supported in a bearing recess 41 of a contact element 42.
  • the point of contact between the leg 35 and the bottom of the recess 41 is a bearing or hinge point.
  • the point of contact between the free end of the leg 36 and the bottom of the recess 39 is a bearing or hinge point.
  • the distance of the bottom of the bearing recess 39 from the axis of rotation 18 forms a short lever L, which is at an obtuse angle to the connecting line between the recesses 39, 41.
  • the spiral spring element 37 extends in the direction of a contact element 43, at the free end of a contact spring 44 is held. This is arranged so that its free tongue-like resilient end protrudes into the pivoting region of the bending spring 37.
  • the pivoting range is dimensioned such that the bending spring element 37 does not touch the contact tongue 44 when the lever 16 is in the desired position, while the bending spring element 37 contacts the contact tongue 44 when the lever 16 pivots downwards.
  • the angular position of the lever L and the connecting line between the support points 41, 39 is dimensioned such that the torque 32 decreases when the lever 16 pivots downward. It goes first to zero and, if the support point 39 under a connecting line between the rotation axis 8 and the support point 41 device, also change its sign and thus increase the pivoting down of the lever 16 even more.
  • the lever 21 may be provided with a similar relief device 31. Both relief devices thus form electrical switches that can be connected to strip conductors 50, 51, 52.
  • the printed conductors can serve to connect the signal lamp 27 or the contacts 26 (FIG. FIG. 2 ) to contact.
  • the yarn feeding device 1 described so far operates as follows:
  • the thread keeps 2, as in FIG. 2 illustrates, both levers 16, 21 in the raised position, in which the bending springs 37 have no contact with their respective associated contact blades 44.
  • the bending springs 37 support the levers 16, 21 and generate a torque which is opposite to the torque generated by the respective weight of the lever 16, 21 and this partially compensated. It is slightly less than the self-torque of the respective lever 16, 21, so that it lies on the thread 2 with a significantly reduced weight.
  • one or more yarn feeler levers 16, 21 are provided, which rest on the yarn 2 with a force that is in the desired position of the lever, i. with proper threadline, is low. If the lever pivots out because the thread tension decreases or the thread tears, the force with which the lever 16, 21 rests on the thread 2 increases. This is effected, for example, by a relief device 31 which partially compensates for the lever weight and applies a pivot angle-dependent compensating force. With increasing pivoting of the lever, the compensation force preferably decreases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Looms (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

L'invention concerne un fournisseur de fil dans lequel il est prévu un ou plusieurs leviers (16) tâteurs de fil, qui exercent une force sur le fil, qui est minime lorsque le levier (16) est en position théorique, c.-à-d. lorsque le périple du fil est conforme. Si le levier pivote, suite à une diminution de la tension du fil ou à une rupture du fil, la force que le levier exerce sur le fil augmente. Cette action peut être produite par un dispositif de déconnexion (31) qui compense en partie le poids du levier et exerce une force de compensation dépendant de l'angle de pivotement. La force de compensation diminue à mesure que le levier pivote.

Claims (10)

  1. Fournisseur de fil (1) destiné à fournir au moins un fil à une machine textile,
    avec un support de base (3), sur lequel est prévu au moins un levier (16) logé de manière à pouvoir pivoter autour d'un axe de pivotement (18) essentiellement horizontal, lequel est en contact au niveau d'une extrémité (19) éloignée de l'axe de pivotement (18) sous l'effet de son poids avec le fil (2),
    caractérisé en ce que
    le levier (16) est relié à un dispositif de décharge (31) qui présente comme source de force un élément de ressort (37) et réduit le poids du levier (16) au moins dans une partie de sa zone de pivotement de sorte que le levier (16) pèse sur le fil avec un poids réduit.
  2. Fournisseur de fil selon la revendication 1, caractérisé en ce que le dispositif de décharge (31) réduit nettement le poids dans une zone de pivotement, dans laquelle le fil (2) a relevé le levier (16) à sa position de consigne, et en ce qu'il réduit moins ou ne réduit pas ou augmente aussi le poids dans une zone de pivotement, dans laquelle le levier (16) est abaissé à une position plus basse.
  3. Fournisseur de fil selon la revendication 1, caractérisé en ce que l'élément de ressort (37) est appliqué par un bras de levier (L) sur le levier (16) et en ce que la zone de pivotement du levier (16) si l'élément de ressort (37) est un élément de ressort de compression, contient une position, dans laquelle l'angle entre le bras de levier (L) et l'élément de ressort de compression s'élève à 180° et si l'élément de ressort (37) est un élément de ressort de traction, contient une position, dans laquelle l'angle entre le bras de levier (L) et l'élément de ressort de traction s'élève à 0°.
  4. Fournisseur de fil selon la revendication 1, caractérisé en ce que le levier (16) est pourvu sur son extrémité (19) d'un revêtement réduisant l'usure ou d'un élément résistant à l'usure (23).
  5. Fournisseur de fil selon la revendication 4, caractérisé en ce que l'élément (23) est un élément céramique, dont le poids est compensé au moins en partie par l'élément de ressort (37) en position de consigne.
  6. Fournisseur de fil selon la revendication 1, caractérisé en ce que l'élément de ressort (37) fait partie d'un commutateur électrique.
  7. Fournisseur de fil selon la revendication 1, caractérisé en ce que l'élément de ressort est un ressort de flexion (37) plié en forme de U, dont une branche (35) s'appuie contre une butée (41) et dont l'autre branche (36) s'appuie contre un bras de levier (L) qui est relié au levier (16).
  8. Fournisseur de fil selon la revendication 7, caractérisé en ce que le ressort de flexion (37) présente des branches (35, 36) qui sont nettement plus longues que leur écartement l'une par rapport à l'autre.
  9. Fournisseur de fil selon la revendication 7, caractérise en ce qu'au ressort de flexion (37) est associé un élément de contact (44), avec lequel le ressort de flexion (37) entre ou n'entre pas en contact lors d'un pivotement du levier (16).
  10. Fournisseur de fil selon la revendication 9, caractérisé en ce que l'élément de contact (44) est disposé à proximité de l'élément de ressort de flexion (37) sur son extrémité, pour lequel les branches (35, 36) sont reliées entre elles.
EP00958107A 1999-07-12 2000-07-06 Fournisseur de fil a element d'arret a poids allege Expired - Lifetime EP1194625B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19932483 1999-07-12
DE19932483A DE19932483A1 (de) 1999-07-12 1999-07-12 Fadenliefergerät mit gewichtsentlastetem Absteller
PCT/DE2000/002208 WO2001004401A1 (fr) 1999-07-12 2000-07-06 Fournisseur de fil a element d'arret a poids allege

Publications (2)

Publication Number Publication Date
EP1194625A1 EP1194625A1 (fr) 2002-04-10
EP1194625B1 true EP1194625B1 (fr) 2011-03-23

Family

ID=7914463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00958107A Expired - Lifetime EP1194625B1 (fr) 1999-07-12 2000-07-06 Fournisseur de fil a element d'arret a poids allege

Country Status (13)

Country Link
US (1) US6637693B1 (fr)
EP (1) EP1194625B1 (fr)
KR (1) KR100493997B1 (fr)
CN (1) CN1304668C (fr)
AU (1) AU6979100A (fr)
CZ (1) CZ200228A3 (fr)
DE (2) DE19932483A1 (fr)
EG (1) EG22567A (fr)
MY (1) MY133395A (fr)
PE (1) PE20010650A1 (fr)
TR (1) TR200200023T2 (fr)
TW (1) TW469309B (fr)
WO (1) WO2001004401A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10113184B4 (de) * 2001-02-26 2006-04-20 Memminger-Iro Gmbh Fadenliefergerät mit Federanschlag für Fadenfühler
DK1281350T3 (da) 2001-08-01 2006-05-15 Thermocore Medical Systems N V Anordning til måling af kartemperatur
IT201700053150A1 (it) 2017-05-17 2018-11-17 Lgl Electronics Spa Sensore di rottura del filato per apparati tessili
CN109811462A (zh) * 2019-04-08 2019-05-28 邹伟夫 一种织袜机输纱机构
DE102023114844B3 (de) 2023-06-06 2024-05-16 Memminger-IRO Gesellschaft mit beschränkter Haftung Fadenliefergerät

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US706840A (en) * 1901-06-26 1902-08-12 E H Godshalk Automatic stop-motion for knitting-machines.
US1506152A (en) * 1921-08-19 1924-08-26 James K Lanning Stop mechanism for knitting machines
US2128476A (en) * 1937-07-16 1938-08-30 Leslie A Runton Actuating mechanism for stop motions
DE1279812B (de) * 1962-03-17 1968-10-10 Reiners Walter Dr Ing Anordnung zum Steuern eines elektrisch steuerbaren Schalters durch einen nur schwachbelastbaren, zum Flattern und Prellen neigenden Steuerschalter
US3896640A (en) * 1973-04-09 1975-07-29 Lebocey Industrie Device for the detection of excessive thread tension and thread breakage
DE2245869A1 (de) * 1972-09-19 1974-03-28 Karl Bous Verfahren und vorrichtung zum liefern und spannen von garnen mit einstellbarer, konstant bleibender fadenspannung
ES409991A1 (es) * 1972-12-14 1975-12-01 Torres Perfeccionamientos en los disparos electromecanicos para laindustria textil.
US3806677A (en) * 1973-01-15 1974-04-23 Stop Motion Devices Corp Detector mechanism for broken strands of yarn
US3858013A (en) * 1973-03-02 1974-12-31 Celanese Canada Ltd Yarn sensing device
DE2603955A1 (de) * 1976-02-03 1977-08-04 Horst Paepke Fadenbruch-sicherungsvorrichtung fuer textilmaschinen
US4043155A (en) * 1976-09-27 1977-08-23 Scorpio Industries, Inc. Positive feed device for knitting machine
DE2836717C3 (de) * 1978-08-22 1981-02-19 Ab Iro, Ulricehamn (Schweden) Positive Fadenliefervorrichtung für Textilmaschinen
US4271687A (en) * 1978-08-01 1981-06-09 Memminger Gmbh Rapid maintenance thread or yarn supply apparatus, particularly for circular knitting machines
SE8305194D0 (sv) * 1983-09-27 1983-09-27 Iro Ab Garnmatningsanordning
DE3417936C2 (de) * 1984-05-15 1986-06-26 Memminger Gmbh, 7290 Freudenstadt Fadenliefervorrichtung für Textilmaschinen
SE8505455D0 (sv) * 1985-11-18 1985-11-18 Iro Ab Garnmatningsanordning for en textilmaskin, i synnerhet en rundstickmaskin
DE19538135A1 (de) * 1995-10-13 1997-04-17 Terrot Strickmaschinen Gmbh Fadenvorrichtung für Textilmaschinen
US5860298A (en) * 1997-05-23 1999-01-19 Jen Hui Chen Thread feeder with thread-twisting preventive device for knitting machines

Also Published As

Publication number Publication date
CN1304668C (zh) 2007-03-14
WO2001004401A1 (fr) 2001-01-18
US6637693B1 (en) 2003-10-28
TW469309B (en) 2001-12-21
CN1360649A (zh) 2002-07-24
EG22567A (en) 2003-04-30
CZ200228A3 (cs) 2002-04-17
DE19932483A1 (de) 2001-01-18
PE20010650A1 (es) 2001-06-19
AU6979100A (en) 2001-01-30
MY133395A (en) 2007-11-30
DE50016082D1 (de) 2011-05-05
EP1194625A1 (fr) 2002-04-10
KR20020020778A (ko) 2002-03-15
TR200200023T2 (tr) 2002-09-23
KR100493997B1 (ko) 2005-06-13

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