EP1040069A1 - Dispositif d'alimentation en fil - Google Patents

Dispositif d'alimentation en fil

Info

Publication number
EP1040069A1
EP1040069A1 EP98966362A EP98966362A EP1040069A1 EP 1040069 A1 EP1040069 A1 EP 1040069A1 EP 98966362 A EP98966362 A EP 98966362A EP 98966362 A EP98966362 A EP 98966362A EP 1040069 A1 EP1040069 A1 EP 1040069A1
Authority
EP
European Patent Office
Prior art keywords
sensor
delivery device
thread delivery
scanning
sensor arm
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.)
Granted
Application number
EP98966362A
Other languages
German (de)
English (en)
Other versions
EP1040069B1 (fr
Inventor
Patrik Jonas Magnusson
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.)
Iropa AG
Original Assignee
Iro Patent 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 Iro Patent AG filed Critical Iro Patent AG
Publication of EP1040069A1 publication Critical patent/EP1040069A1/fr
Application granted granted Critical
Publication of EP1040069B1 publication Critical patent/EP1040069B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/367—Monitoring yarn quantity on the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/524—Vibration

Definitions

  • the invention relates to a thread delivery device specified in the preamble of claim 1.
  • each sensor arm is a two-legged wire bracket and has its own swivel axis that carries an arm that extends the sensor arm to the opposite side. This arm engages in the scanning device in which an optoelectronic detector is provided.
  • a spiral spring is anchored to the scanning device and acts on each sensor arm in such a way that the sensor foot is blasted to the basic position.
  • the sensor device contains many individual parts, requires special care and expertise in the setting, and shows an uneasy response under difficult operating conditions.
  • the invention has for its object to provide a yarn delivery device of the type mentioned, which is characterized by a compact sensor device with a precise and insensitive response.
  • the projection not only covers the scanning distance by a movement in one direction from one side, but the projection also works together with the cover surface in such a way that the scanning distance initially exactly from the covering surface on the side opposite the penetration side of the projection into the scanning distance is limited, and when the projection passes through the scanning section, the overlap between the cover edge and the cover surface is finally is provided, which causes a rapid and complete coverage of the scanning path with a sharp transition.
  • the scanning path is narrowed, so to speak, from two opposite sides (in the manner of a slit diaphragm) and ultimately completely interrupted. In terms of construction, a clean signal transition of the scanning device is simply achieved when the cover edge overlaps the cover surface and reliably interrupts the scanning path.
  • cover edge and the cover surface creates a rapid transition between full shading and no shadowing of an optical path, particularly in the case of an optoelectronic scanning device, which simplifies the signal evaluation and reduces the electronic outlay required for the signal evaluation.
  • the overlap is also favorable for other scanning systems because the cover surface and the cover edge form aperture-like boundaries of the scanning path and act together like scissors.
  • the flag is integrated as an actuator of the scanning device in the sensor arm or sensor arm part. It can perform an additional function if it determines the end position with the stop.
  • the stop forms simple at the same time on the cover surface.
  • the overlap is made transversely to the direction of the sensor arm in a small space.
  • the flag serves as a support for the projection and assists in covering the scanning path.
  • the scanning path is particularly easily and effectively limited and blocked.
  • an optodetector accommodated in a fork-shaped holder is preferably used, which is inexpensive with high operational reliability and works precisely.
  • the optodetector can be placed protected.
  • the optodetector is only one way of tapping the movements of the sensor arm.
  • An inductive, an electrical or an electromagnetic shear or a pneumatic detector can be used.
  • Output signals of the scanning device are expediently used to control the drive of the thread delivery device or for error monitoring of the thread delivery device or a thread processing system to which the thread delivery device belongs.
  • the holder of the optodetector can be arranged on a circuit board in the sensor housing, the circuit board acting as a cover in the interior of the sensor housing to the outside. If necessary, even forms a stroke limiter for the sensor arm.
  • a passage opening provided for the sensor base can be small, so that dirt hardly penetrates or simple measures are sufficient to reliably prevent the penetration of dirt.
  • the stop limiting the stroke of the sensor arm is arranged on the housing part of the thread delivery device, preferably in one piece with it, which simplifies production.
  • the formation of harmful parasitic vibrations that could influence the response is structurally simple.
  • the spring element has the task of generating the load on the sensor arm to the basic position regardless of the installation position of the fade delivery device, and additionally to dampen the occurrence of oscillating movements of the sensor arm under unfavorable operating conditions, possibly even when it arises. This is achieved by a spring hardening which is set as a function of the stroke in a range of motion of the sensor arm into which the sensor arm can reach due to its working dynamics.
  • the forced damping prevents an undesirable rocking effect without interfering with the working of the sensor arm. Conversely, the damping improves the correct working of the sensor arm when sensing the presence or absence of the thread.
  • the suspension of the sensor arm and the aforementioned damping are accomplished in a structurally simple manner.
  • the response of the sensor device is improved if, in unfavorable operating conditions, the guide arm is guided in the stationary guide fork or is at least supported against lateral evasive movements. Lateral vibrations of the guide arm can be damped as they arise.
  • the scanning device and the spring arrangement are integrated on the same side of the bearing in the sensor housing as the sensor arm part carrying the sensor foot, installation space is considerably saved in the direction of the axis of the storage drum. Furthermore, the number of necessary individual parts of the sensor device is noticeably reduced. Space is also saved transversely to the axis of the storage drum, since the individual cooperating parts can be arranged close to one another. This is advantageous if the sensor device is equipped with several sensor arms. Thanks to the compact arrangement, harmful vibrations are avoided, so that a sensitive response can be achieved.
  • each sensor arm part interacts directly with its scanning device and the spring arrangement, i.e. without additional, motion-transmitting accessories.
  • the scanning device can be arranged on the side of the bearing facing away from the sensor foot, the sensor arms being correspondingly extended beyond the bearing to the other side.
  • the scanning device can then expediently be mounted on a control board of a drive of the thread delivery device. It takes up more space in the direction of the axis of the storage drum; however, the scanning device can then be better removed from the influence of dirt or lint.
  • a weight balance for the sensor arm is achieved with the balancing mass. If necessary, very wear-resistant, but et- heavier, feeler feet can be used without causing undesirable high mechanical loads on the thread.
  • the sensor arm part is already prepared with the flag and the stop for cooperation with the cover device and the spring arrangement. This has manufacturing advantages.
  • the number of individual parts and the installation space are reduced in a sensor device with a plurality of sensor arms if all sensor arms have a common axis, and the spring elements or the spring element acting on all sensor arms are accommodated in a space-saving manner. It is important if the switching device for damping has no further components because the spring element is used for the damping function, which also serves to load the sensor arm for the basic position. A common axis for several sensor arms is appropriate regardless of where the scanning device and / or the damping device are arranged with respect to the axis.
  • 1 is a schematic and perspective partial sectional view of main components of a yarn delivery device
  • FIG. 2 is a perspective partial sectional view similar to that of FIG. 1 on an enlarged scale
  • FIGS. 1 and 2 shows some components from FIGS. 1 and 2 in a perspective view and detached from the overall assembly
  • FIG. 4 shows a cross section of a detail in an end position of a sensor arm part
  • Fig. 5 shows a cross section corresponding to FIG. 4, in a different position of the
  • Fig. 6 is a perspective partial sectional view similar to that of Fig. 2 in another embodiment.
  • a winding element 1 is shown in a storage drum 2, which is associated with a sensor device S attached to a housing or a housing extension 4.
  • three sensor arms A are provided which extend parallel to one another in the direction of the axis of the storage drum 2 and monitor a thread supply V consisting of turns of a thread Y on the storage drum 2.
  • the thread supply V is formed by a relative rotary movement between the winding element 1 and the storage drum 2 (in the present case a stationary storage drum 2) with an axial size, which is regulated in order to avoid emptying or overfilling of the storage drum 2 despite continuous or intermittent thread consumption .
  • the thread supply V overlaps a longitudinal recess 3 in the storage drum 2.
  • Feet 8a to 8c are aligned with the recess 3, each of which can be held under spring force in a basic position in which it engages in the recess 3 and on which it passes through the thread supply V is shiftable upwards.
  • the left sensor foot 8a in FIG. 1 can belong to a thread break monitor which responds as soon as the first turns of the thread supply V fail to appear.
  • the feeler foot 8b can belong to a minimum sensor which monitors the minimum permissible size of the thread supply V and, in the absence of the thread supply V in this area, activates the drive of the winding element 1 in order to supplement the thread supply V.
  • the sensor base 8c belongs, for example, to a so-called maximum sensor, which switches off or delays the drive of the winding element 1 when it is shifted from the basic position shown in FIG. 1, because the permissible maximum size of the thread supply V has been reached.
  • each sensor arm A consists of a sensor arm part 7a to 7c and the sensor base 8a to 8c. These components can be manufactured separately and connected to one another. All sensor arms A are mounted on a common axis 5 in a sensor housing 6, the axis 5 extending approximately transversely to the direction of the axis of the storage drum 2. Alternatively, it would be possible to arrange the axis 5 parallel to the axis of the storage drum 2 and to orient the sensor arms A transversely to the axis of the storage drum 2.
  • a spring arrangement B is provided, to which a switching device D is assigned.
  • the sensor housing 6 is integrated, for example, in the arm 4 of the thread delivery device housing.
  • Each sensor arm A is assigned a non-contact scanning device T, which generates a signal for an assigned monitoring or control device depending on the pivoting position of the sensor arm.
  • the scanning device T can be an optoelectronic, electrical, electronic or electromagnetic detector.
  • the spring arrangement B and the scanning device T are arranged in FIGS. 1 to 3 on the same side of the axis 5 as the sensor arm parts 7a to 7c carrying the sensor feet 8a to 8c.
  • the scanning devices T are below and the spring arrangement T above the Feühierarmmaschine 7a to 7c.
  • each sensor arm part 7a to 7c is a molded part, e.g. made of plastic (injection molded part), in which a socket 9 for the sensor base 8a to 8c, a stop 14 for the spring arrangement B and a flag 13 for the scanning device T are structurally integrated.
  • each feeler foot 8a to 8c is, for example, a molded metal part, for example a die-cast part or bent from spring steel wire, with a toe defining a continuous surface 10 and two approximately parallel and spaced legs 11, one leg 11 of which is inserted into the respective plug-in socket 9 of a feeler arm part 7a to 7c inserted and secured in position if necessary by means of a securing element 20.
  • the other leg 11 ends freely or is shortened to the length required in each case.
  • each sensor foot 8a to 8c is greater than the distance between adjacent sensor arm parts 7a to 7c, made possible by a lateral displacement of the jack 9 on the sensor arm part 7b. If necessary, the sockets 9 on the sensor arm parts 7a to 7c can be adjusted in their longitudinal direction in order to be able to adjust the relative positions of the sensor feet 8a to 8c.
  • Each feeler arm part 7a to 7c can be assigned a stationary guide fork 12, between the teeth of which the feeler arm part 7a to 7c is guided or at least prevented from evading to the side.
  • the stops 14 on the sensor arm parts 7a to 7c are at the same distance from the axis 5 and have rounded surfaces 15 on the upper side, which bear against spring elements 16a to 16c of the spring arrangement B, around each sensor foot 8a to 8c in its basic position (see the one in FIG Fig. 2 right feeler foot 8c) to keep resilient until it is displaced from the basic position by the rear force of the thread Y.
  • the spring elements 16a to 16c shown in FIG. 2 expediently belong to a single spring element which is anchored at 17 in the sensor housing.
  • the spring element 16a to 16c are spiral springs, expediently leaf springs, which project freely.
  • the switching device D contains for each spring element 16a to 16c an expediently adjustable damping extension 18, for example an adjusting screw, which is accessible from outside the sensor housing 6 and is aligned with a contact area 19 with the associated spring element 16a to 16c.
  • the spring elements 16a to 16c do not necessarily come into contact with the damping extension 18. Only when the sensor arm A should experience a greater stroke due to the dynamics does its spring element 16a to 16c reach the damping continuation. sentence 18. Since its contact area 19 is, for example, on the side of the surface 15 facing away from the anchoring 17, the spring element 16a to 16b hardens significantly, is damped by the oscillating movement of the sensor arm A and is pushed back into its normal working area.
  • the scanning devices T are arranged, for example, on a circuit board which has through openings 32 for the legs 11 of the sensor feet 8a to 8c and carries conductor tracks and, if appropriate, other electronic or electrical components.
  • a cut end 21 of a leg 11 of a feeler foot 8c is indicated. This cut end 21 could be used to form an upward stroke limitation for the associated sensor arm A when it contacts the underside of the board P.
  • each flag 13 is formed on the underside of the sensor arm part 7a to 7c and, according to FIGS. 4 and 5, among other things serves to close the basic position of each sensor arm part 7a to 7c in cooperation with a stationary stop 30 limit.
  • an optoelectronic detector of the scanning device T is formed by an emitter E and a receiver R aligned thereon, between which a beam path 23 is present as a scanning path.
  • the scanning device T is integrated in a fork-shaped holder 24, for example fixed on the board B.
  • the holder has a mouth-shaped recess 25 for the flag 13, for example the sensor arm part 7a.
  • the stop 30 is formed here by an insert 26.
  • a recess 27 is provided which is delimited on both sides by cover surfaces 29 and allows a projection 28 provided on the underside of the flag 13, in which in FIG 54 dip into the recess shown. This position is defined by resting the lower side of the flag 13 on the stop 30.
  • a cover edge 31 provided on the projection 28 and lying transversely to the beam path 23 overlaps with the cover surfaces 29 in order to reliably shade the beam path 23.
  • the sensor base 8a is displaced upwards, the sensor portion 7a is raised against the force of a spring element 17a until the projection 28 has emerged from the recess 27 and the overlap between the cover edge 31 and the cover surfaces 29 has been eliminated, then the beam path 23 is continuous.
  • a signal is generated either in the position shown in FIG. 4 or in the position shown in FIG. 5, which registers and evaluates the control or monitoring device.
  • the sensor arms A are extended beyond the common axis 5 with sensor arm parts 7a ', 7b', 7c ', and the scanning device T is arranged on the side of the axis 5 facing away from the sensor feet 8a, 8b, 8c, e.g. in a section 6 of the boom 4 containing a board P 'of the drive control of the thread delivery device F.
  • the brackets 24 of the scanning device T can be arranged on this board P.
  • the stops 30 for the flags 13 on the feeler arm parts 7a 'to 7c' are formed by projections 33 which penetrate the circuit board P 'and are expediently formed in one piece with the section 6' which belongs to the arm 4.
  • the sensor arm parts 7a 'to 7c' can be designed as ballast masses G or (as shown) ballast masses G. Although this is not emphasized in FIG. 6, each flag 13 works analogously to FIGS. 4 and 5 with a projection 28 and at least one cover edge 31 overlapping with at least one cover surface 29 formed by the stop 30 when the beam path 23 is shadowed.
  • the switching device D has permanently installed damping extensions 18 in FIG. 6.
  • the preload of the spring arrangement B anchored at 17 can be adjusted centrally by means of an adjusting screw 34 which, for example, is arranged in the sensor housing 6.
  • the sensor housing 6 is accommodated in the arm 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Looms (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Feeding Of Articles To Conveyors (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en fil (F) à mandrin de stockage (2) pour recevoir une réserve de fil (V) composée de spires de fil (Y) enroulé dessus. Ledit dispositif comprend un dispositif de détection monté en dehors du mandrin de stockage, qui présente au moins un bras capteur (A) s'étendant avec une partie de bras capteur (7a à 7c) portant un pied (8a à 8c), depuis son logement (5), dans la trajectoire de mouvement des spires, le long du mandrin de stockage, d'où il peut être déplacé hors d'une position de base. Le dispositif comprend également un système à effet ressort (B) qui sollicite le bras capteur en direction de la position de base, ainsi qu'un dispositif d'exploration par balayage (T) fournissant des signaux pour la position du bras capteur, ce dernier recouvrant ou libérant une voie de balayage (23) du dispositif d'exploration par balayage (T) en fonction de la position. Il est prévu à proximité et en dehors de la voie de balayage (23), au moins une surface de recouvrement fixe pour une partie saillante (28) pouvant se déplacer avec le bras capteur et comportant une arête de recouvrement. Cette partie saillante (28) peut être déplacée, par son arête de recouvrement (31) jusque dans une position de chevauchement de la surface de recouvrement (29) et de l'arête de recouvrement (31).
EP98966362A 1997-12-17 1998-12-17 Dispositif d'alimentation en fil Expired - Lifetime EP1040069B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19756243A DE19756243A1 (de) 1997-12-17 1997-12-17 Fadenliefergerät
DE19756243 1997-12-17
PCT/EP1998/008299 WO1999030999A1 (fr) 1997-12-17 1998-12-17 Dispositif d'alimentation en fil

Publications (2)

Publication Number Publication Date
EP1040069A1 true EP1040069A1 (fr) 2000-10-04
EP1040069B1 EP1040069B1 (fr) 2002-08-07

Family

ID=7852334

Family Applications (3)

Application Number Title Priority Date Filing Date
EP98965279A Expired - Lifetime EP1040067B1 (fr) 1997-12-17 1998-12-17 Dispositif d'alimentation en fil
EP98966362A Expired - Lifetime EP1040069B1 (fr) 1997-12-17 1998-12-17 Dispositif d'alimentation en fil
EP98966967A Expired - Lifetime EP1047819B1 (fr) 1997-12-17 1998-12-17 Dispositif d'alimentation en fil

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP98965279A Expired - Lifetime EP1040067B1 (fr) 1997-12-17 1998-12-17 Dispositif d'alimentation en fil

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP98966967A Expired - Lifetime EP1047819B1 (fr) 1997-12-17 1998-12-17 Dispositif d'alimentation en fil

Country Status (6)

Country Link
US (1) US6409114B1 (fr)
EP (3) EP1040067B1 (fr)
KR (2) KR100368460B1 (fr)
CN (3) CN1108270C (fr)
DE (4) DE19756243A1 (fr)
WO (3) WO1999031308A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20050484A1 (it) * 2005-07-14 2007-01-15 L G L Electronics Spa Unita' di controllo per dispositivi di frenatura del filato in alimentatori di trama per telai di tessitura, e procedura di sintonizzazione della stessa
ITTO20050810A1 (it) * 2005-11-18 2007-05-19 Lgl Electronics Spa Rilevatore di scorta trama per dispositivi alimentatori di trama
ITTO20050893A1 (it) * 2005-12-22 2007-06-23 Lgl Electronics Spa Rilevatore di scorta trama perfezionato per dispositivi alimentari di trama
IT1402928B1 (it) * 2010-12-13 2013-09-27 Roj S R L Porgitrama per telaio tessile
CN113862848A (zh) * 2021-10-28 2021-12-31 那坡同益新丝绸科技实业有限公司 一种用于细纱机的夹纱装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1345648A (en) * 1971-04-29 1974-01-30 Lawson Hemphill Yarn storage feeders
US3776480A (en) * 1972-04-05 1973-12-04 Lawson Hemphill Yarn handling apparatus
US3844504A (en) 1972-04-05 1974-10-29 Lawson Hemphill Method and apparatus for handling yarn
US3759455A (en) * 1972-09-28 1973-09-18 Wesco Industries Corp Filament feeding and storage device
US4226379A (en) * 1979-12-06 1980-10-07 Leesona Corporation Loom storage feeder improvement
BE900492A (nl) * 1984-09-04 1985-03-04 Picanol Nv Snelheidsregeling van inslagvoorafwikkelaar bij weefgetouwen.
ITTO980520A1 (it) * 1998-06-16 1999-12-16 Lgl Electronics Spa Perfezionamento ai dispositivi di sorveglianza della riserva di filato negli apparecchi alimentatori di trama a telai di tessitura.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9930999A1 *

Also Published As

Publication number Publication date
CN1108270C (zh) 2003-05-14
DE59805134D1 (de) 2002-09-12
CN1285803A (zh) 2001-02-28
KR20010033231A (ko) 2001-04-25
WO1999031308A2 (fr) 1999-06-24
WO1999030999A1 (fr) 1999-06-24
CN1099364C (zh) 2003-01-22
EP1040067B1 (fr) 2002-08-07
KR100368459B1 (ko) 2003-01-24
DE59805557D1 (de) 2002-10-17
CN1282303A (zh) 2001-01-31
WO1999031308A3 (fr) 1999-08-19
EP1047819B1 (fr) 2002-09-11
DE59805136D1 (de) 2002-09-12
US6409114B1 (en) 2002-06-25
WO1999030998A1 (fr) 1999-06-24
EP1040067A1 (fr) 2000-10-04
CN1098798C (zh) 2003-01-15
DE19756243A1 (de) 1999-06-24
EP1040069B1 (fr) 2002-08-07
KR100368460B1 (ko) 2003-01-24
CN1282304A (zh) 2001-01-31
KR20010033232A (ko) 2001-04-25
EP1047819A2 (fr) 2000-11-02

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