EP1699724B1 - Tendeur de fil a frein - Google Patents

Tendeur de fil a frein Download PDF

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Publication number
EP1699724B1
EP1699724B1 EP04804109A EP04804109A EP1699724B1 EP 1699724 B1 EP1699724 B1 EP 1699724B1 EP 04804109 A EP04804109 A EP 04804109A EP 04804109 A EP04804109 A EP 04804109A EP 1699724 B1 EP1699724 B1 EP 1699724B1
Authority
EP
European Patent Office
Prior art keywords
yarn
braking surface
fixed
fixed braking
thread
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.)
Not-in-force
Application number
EP04804109A
Other languages
German (de)
English (en)
Other versions
EP1699724A1 (fr
Inventor
Per Ohlson
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.)
Iro AB
Original Assignee
Iro AB
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 AB filed Critical Iro AB
Publication of EP1699724A1 publication Critical patent/EP1699724A1/fr
Application granted granted Critical
Publication of EP1699724B1 publication Critical patent/EP1699724B1/fr
Anticipated expiration legal-status Critical
Not-in-force 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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • 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

Definitions

  • the invention relates to a yarn brake specified in the preamble of claim 1 Art.
  • the movable braking surface is a leaf spring which is pivotally mounted in the housing of the yarn brake with elastic bias toward the fixed braking surface and contacted in the braking position, the fixed and cylindrical braking surface.
  • the solid cylindrical braking surface is acted upon by spring force via a lever about a parallel to the cylinder axis pivot axis in the housing to a predetermined braking position, in contact with the leaf spring is formed.
  • the upstream thread eyelet is off-center offset towards the top of the fixed braking surface, so that the thread is deflected in the thread eyelet and around the fixed braking surface.
  • the fixed braking surface by means of simultaneously activating a pneumatic threading lever about the pivot axis on the housing completely pivoted out of the thread running path between the eyelets, while the movable braking surface is intercepted at a stop so that it does not interfere with the thread running path, but that a wide free passage between the eyelets is formed in order to automatically thread a new thread with compressed air in the release position can.
  • the fixed braking surface is arranged on a magnetic body in the housing of the yarn brake.
  • the Fadenleitiata upstream and downstream of the fixed braking surface are eyelets with circular openings and define the yarn path through the yarn brake.
  • the movable braking surface is a spring blade, which is held on a flap which is pivotable about a to the thread running path approximately parallel adjusting axis. In the braking position of the thread brake, the flap is closed. The braking effect is controlled by magnet loading of the spring blade against the fixed braking surface. In the unfolded position of the flap (release position), the movable braking surface is lifted from the fixed braking surface.
  • no braking effect for the thread running through the thread brake thread is useful, eg. B. with weak or sticky thread qualities.
  • the flap remains open. Since the thread running path is determined by the thread brake by the specially selected relative position of the yarn guide with respect to a normal braking operation so that the braked thread does not stimulate the movable braking surface with weak braking action to vibration, can in the release position despite open flap of not braked thread on rub the fixed braking surface.
  • a single predetermined relative position of the yarn guide elements thus represents a non-optimal compromise both for yarn materials that are not braked, as well as for thread materials that may be weakly braked, is. It should be noted that in many cases the thread in the upstream thread eye enters with a circulating movement, which is generated by a preceding yarn feeding device, and which can stimulate the thread in the yarn brake to vibrations.
  • the fixed braking surface is adjusted by means of a cam drive in a release position in which the fixed braking surface still protrudes beyond a straight line, which would correspond to a straight yarn path and connects the lowest points of the opening circles of both yarn loops. This means that the thread is not actively braked, but still rubs against the fixed braking surface.
  • the invention has for its object to improve a thread brake of the type mentioned in that for different thread materials that are either slowed down or go through unrestrained, each optimal thread running conditions can be achieved.
  • the upstream thread eye is off-center offset towards the top of the fixed braking surface, so that the incoming thread is clean and calm guided along the fixed braking surface even if it enters the upstream eyelet with one revolution. This results in braking optimal thread running conditions.
  • the offset down would be impractical for thread materials that are not to be braked, because then the thread would be undesirably guided and rubbed on the fixed braking surface under the passage tensile force.
  • the relative position between the fixed braking surface and at least the upstream thread eyelet can be changed so that optimal thread running conditions are present even for thread material not to be braked in the release position of the thread brake because the thread in the thread brake contacts neither the fixed nor the movable braking surface.
  • the thread brake then has no effect on the yarn path and only needs to be changed over and opened, but not dismantled. Since in many cases of use of such yarn brakes at least the upstream yarn eyelet must have a predetermined and unchangeable relative position with respect to a device from which the thread enters the yarn brake, the fixed braking surface is expedient in directions substantially perpendicular to its upper side relative to at least upstream thread eye adjustable.
  • the yarn eyelet is slightly offset from the upper surface of the fixed braking surface, ie away from the movable braking surface, so that the yarn is guided cleanly along the fixed braking surface even with a tendency to vibrate from an orbital motion caused by the upstream becomes.
  • the upper side of the fixed braking surface is offset downwards relative to at least the upstream yarn eyelet, so that the yarn, even if it approaches the eyelet with a circulating movement, passes by the fixed braking surface and is not braked.
  • the fixed braking surface then does not need to be adjustable. Structurally simple, the fixed braking surface is adjusted in a sliding guide of the housing of the yarn brake. The sliding guide can run substantially perpendicular to the top of the fixed braking surface.
  • At least two predetermined detent positions are provided for the fixed braking surface defining two optimum relative positions.
  • the fixed braking surface is manually adjustable between the locking positions, z. B. by pressure with the hand in one or the other direction of adjustment until the fixed braking surface has taken the respective detent position.
  • the auxiliary drive can optionally operate remotely, z. B. by means of a pneumatic cylinder or an electric motor. If the position of the upstream thread eyelet is not necessarily unchangeable relative to a device arranged in front of it, the eyelet is adjusted relative to the upper side of the fixed brake surface.
  • both eyelets can be adjusted together or individually.
  • the offset from the fixed braking surface downwardly in the braking position such that the distance, seen perpendicular to the surface, between the fixed braking surface and the highest point of the circle of the aperture is between about 5 to 35%, preferably about 20% of the circle diameter.
  • the relative position is adjusted until the distance between the fixed braking surface and the highest point of the circle at least half to the whole Circular diameter is, preferably even more than the whole circle diameter.
  • the magnetic body When the fixed braking surface is attached to a magnetic body, the magnetic body is displaced together with the fixed braking surface.
  • the locking positions are positively and resiliently acted upon. This allows a comfortable handling. For safety reasons, a releasable locking device can be provided for each locking position, which must be solved only if an adjustment is made.
  • yarn brake F has a fixed braking surface 1 on a magnetic body 3, which is adjustable in a sliding guide approximately perpendicular to the top of the fixed braking surface 1.
  • a movable braking surface 2 is provided, for example, with a flap, not shown, about an adjusting axis 29 of the in Fig. 1 shown braking position in the in Fig. 2 shown unfolded release position can be brought.
  • the braking effect between the braking surfaces 1, 2 is generated and modulated magnetically in the braking position via the magnetic body 3.
  • the movable braking surface 2 is additionally or even only pressed by a spring, not shown, or by its own elasticity against the fixed braking surface 1.
  • a spring not shown
  • upstream and downstream of the fixed braking surface 1 yarn guide elements L1 and L2 are provided which define a certain yarn path x through the yarn brake F.
  • the thread guiding elements L1, L2 are eyelets 8 with circular openings 9.
  • the thread guiding elements L1, L2 are in housing walls 6, 7 of the yarn brake F in certain relative positions against (the plane) of the top of the fixed braking surface 1 positioned.
  • Fig. 1 brake position are indicated with Y circular centers of the openings 9 of the eyelets 8 slightly offset from the fixed braking surface 1 down.
  • Fig. 3 is the offset of the circular center y down adjusted so that the distance a between the top of the fixed braking surface 1 and a highest point 11 of the opening 9 is about 5 to 35% of the circular diameter d.
  • the downstream thread eyelet 8 can be positioned in the same way as the upstream eyelet 8. However, this is not absolutely necessary.
  • the downstream thread eyelet 8 could possibly be aligned with its circular center Y on the solid braking surface 1 or above.
  • the sliding guide defines at least a first and a second detent position R1, R2 for the magnetic body 3 and the fixed braking surface 1. Between the detent positions R1, R2, the fixed braking surface 1 can be adjusted by manual pressure up or down, or by means of an auxiliary drive. 4 and an operation 5.
  • upper detent position R1 is the aforementioned, the braking position associated relative position between the Fadenleitmaschinen L1, L2 and the fixed braking surface 1 before.
  • the adjustment range can be so large that the distance a 'between the highest point 11 of the circle of the opening 9 and the top of the fixed braking surface 1 is more than half the circle diameter d or even greater than that Circle diameter d.
  • the adjustable eyelet 8 is held, for example, in a sliding guide in the GeHousewange 6 and 7, which defines the at least two spaced apart in the vertical direction locking positions R1, R2.
  • the thread eye is either formed itself with eccentric opening or contained in an eccentric, so that can be changed by rotating in the Gekorusewange the high position of the circular center y in relation to the top of the fixed braking surface 1.
  • even the entire Gekorusewange 6 or 7 adjusted with the eyelet 8 when the above-mentioned relative positions must be changed (not shown).
  • a yarn brake F which is a magnetically controlled yarn brake of the type TEC.
  • the yarn brake has the adjusting device SF for adjusting the arranged on the magnetic body 3, fixed braking surface 1 between the at least two locking positions R1, R2, based on the Fig. 1 to 4 are explained.
  • the movable braking surface is supported on a flap 18 which is about the adjusting axis 29 of the housing of the yarn brake from the braking position shown in the direction of an in Fig. 5 indicated arrow can be opened to bring the yarn brake in a release position.
  • a detent element 13 which is formed in the basic train U-shaped with two legs, is connected to a here, for example, curved cover 16, which in turn connected to the magnetic body 3 and formed in yielding or yielding.
  • the locking part 13 may be a one-piece plastic injection molded part with the cover 16.
  • R1, R2 compression springs 14 may be provided on retaining pins 15.
  • a blocking device is provided, which comprises a lever 17 with a blocking lug 25.
  • the lever 17 is pivotally connected to one of a connected to the magnetic body 3 flange plate 21 axle journal 22 between the legs of the locking member 13 and has a spring arm 26, the lever 17 in the in Fig. 10 indicated blocking position acted upon.
  • the blocking lug 25 engages, for example, over a leg of the latching part 13, so that it can not escape from the latching recess 19 or 20 against the spring 14 as long as the lever 17 is in Fig. 10 is not rotated so far clockwise that the blocking lug 25 is displaced into the space between the legs of the locking part 13.
  • the lever 17 is rotatably mounted with a sleeve member 23 on the pivot pin 22 and is secured by a spacer sleeve 24 against rising.
  • the fixed braking surface 1 is fixed in the locking position R2.
  • the distance a 'between the yarn path X and the highest point 11 of the circular Opening 9 of the yarn guide element L1 or L1 and L2 defining yarn eyelet is for example 5.5 mm.
  • the flap 18 can remain in the unfolded position in this case, since the thread along the yarn path X neither the movable braking surface nor the fixed braking surface 1 can contact. But it is also possible, for safety's sake, the flap 18 in Fig. 5 to unfold in a clockwise direction.
  • the one in the blocking position of Fig. 10 standing lever 17 prevents an automatic movement of the magnetic body 3 from the selected locking position R2.
  • braking position of the yarn brake F is the magnetic body 3 fixed to the fixed braking surface 1 in the other locking position R1 and secured by the lever 17 with the blocking lug 25.
  • the distance a between the fixed braking surface 1 and the highest point of the circular opening 9 at least the upstream thread eyelet or the thread guide L1 is only 0.5 mm, ie the distance a between the yarn path x and the fixed braking surface corresponds to the dimension of 0 , 5 mm.
  • the thread brake markings can be provided which visually clearly indicate whether the locking position R1 or R2 is selected.
  • more than two locking positions R1, R2 are provided, or an adjustment is provided which allows a defined adjustment of the relative position of the yarn guide elements with respect to the fixed braking surface without defined locking positions.

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Sewing Machines And Sewing (AREA)
  • Looms (AREA)

Abstract

L'invention concerne un tendeur de fil à frein (F) comportant une surface de tension fixe (1) et une surface de tension mobile (2), ainsi que des éléments de guidage de fil (L1, L2, 8) définissant le parcours du fil (x) à travers le tendeur de fil à frein (F). Selon l'invention, en amont et en aval de la surface de tension fixe (1), au moins l'élément de guidage de fil situé en amont (L1, 8) est décalé, en position de tension, par rapport à la face supérieure de la surface de tension fixe (1) de manière excentrée vers le bas et le tendeur de fil à frein présente un dispositif d'ajustement (SF) à l'aide duquel la position relative entre la surface de tension fixe (19) et au moins l'élément de guidage de fil situé en amont (L1, 8) peut être modifiée dans des directions sensiblement perpendiculaires à la surface de tension fixe (1).

Claims (4)

  1. Tendeur de fil à frein (F), en particulier pour des métiers à tisser, comprenant une surface de freinage fixe (1) et une surface de freinage mobile (2), qui est ajustable entre une position de freinage, dans laquelle la surface de freinage mobile (2) s'applique dans une zone de freinage avec une certaine pression sur la surface de freinage fixe (1), et une position de desserrage, dans laquelle elle est décollée de la surface de freinage fixe (1), et le parcours (X) du fil (Y) à travers les oeillets de fil (L1, L2, 8) déterminant les freins de fil en amont et en aval de la zone de freinage, dans lequel au moins l'oeillet de fil situé en amont (L1, 8) avec son ouverture circulaire (9) en position de freinage par rapport à la surface de freinage fixe (1) est déplacé de manière excentrée vers le bas, et le frein de fil (F) présente un dispositif de réglage (SF), à l'aide duquel la position relative entre la surface de freinage fixe (1) et au moins l'oeillet de fil (L1, 8) situé en amont peut être modifiée dans des directions sensiblement perpendiculaires à la surface de freinage fixe (1), caractérisé en ce que la surface de freinage fixe (1) est aménagée de manière à pouvoir se déplacer dans une direction sensiblement perpendiculaire à sa face supérieure, par rapport à au moins l'oeillet (L1, 8) situé en amont, dans un guide coulissant, qui s'étend de manière sensiblement perpendiculaire à la face supérieure de la surface de freinage fixe (1), en ce qu'il est prévu au moins deux positions d'arrêt prédéterminées (R1, R2) pour la surface de freinage fixe (1) et en ce que la surface de freinage fixe (1) est ajustable entre les positions d'arrêt (R1, R2) manuellement ou au moyen d'un entraînement auxiliaire (4), ou, du moins, l'oeillet de fil (L1, 8) situé en amont est aménagé dans une joue (6, 7) du boîtier du frein de fil (F) et la joue de boîtier (6, 7) avec l'oeillet de fil (L1, 8) ou l'oeillet de fil (L1) dans la joue de boîtier (6, 7) est ajustable dans des directions sensiblement perpendiculaires à la face supérieure de la surface de freinage fixe (1) par rapport à la face supérieure de manière à présenter pour un fil (Y) ne devant pas être freiné en position de desserrage une condition de trajet de fil, dans laquelle un fil (Y) n'est mis en contact le long du parcours de fil (X) par le frein de fil (F) ni avec la surface de freinage fixe (1) ni avec la surface de freinage mobile (2) et dans laquelle le frein de fil (F) n'a pas d'influence sur le trajet de fil.
  2. Tendeur de fil à frein selon la revendication 1, caractérisé en ce que le centre du cercle (y) de l'ouverture (9) de l'oeillet de fil (8) situé en amont, en position de freinage par rapport à la face supérieure de la surface de freinage fixe (1), est déplacé de manière excentrée vers le bas de sorte que la distance (a) considérée perpendiculairement à la surface entre la face supérieure et le point le plus élevé (11) du cercle de l'ouverture soit équivalente à une valeur entre environ 5 et 35 %, de préférence d'environ 20 %, du diamètre du cercle (d) et que la position relative soit ajustable jusqu'à ce que la distance (a') soit égale à une valeur d'au moins la moitié à la totalité du diamètre du cercle (d), de préférence même supérieure au diamètre (d) total du cercle.
  3. Frein de fil selon la revendication 1, caractérisé en ce que la surface de freinage fixe (1), de préférence conjointement avec un corps magnétique (3) sur lequel est aménagé la surface de freinage fixe (1), est ajustable manuellement entre les positions d'arrêt (R1, R2).
  4. Frein de fil selon la revendication 1, caractérisé en ce que les positions d'arrêt (R1, R2) sont sollicitées par adaptation de forme et de manière élastique et en ce qu'il est prévu en complément un dispositif de blocage amovible (17, 25) pour la position d'arrêt respective (R1, R2).
EP04804109A 2003-12-31 2004-12-20 Tendeur de fil a frein Not-in-force EP1699724B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003161773 DE10361773A1 (de) 2003-12-31 2003-12-31 Fadenbremse
PCT/EP2004/014511 WO2005066055A1 (fr) 2003-12-31 2004-12-20 Tendeur de fil a frein

Publications (2)

Publication Number Publication Date
EP1699724A1 EP1699724A1 (fr) 2006-09-13
EP1699724B1 true EP1699724B1 (fr) 2010-07-07

Family

ID=34706702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04804109A Not-in-force EP1699724B1 (fr) 2003-12-31 2004-12-20 Tendeur de fil a frein

Country Status (4)

Country Link
EP (1) EP1699724B1 (fr)
CN (1) CN1902114B (fr)
DE (2) DE10361773A1 (fr)
WO (1) WO2005066055A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453012A1 (fr) * 1990-04-17 1991-10-23 Picanol N.V. Frein de fil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH564478A5 (fr) * 1973-04-03 1975-07-31 Sulzer Ag
DE3637919A1 (de) * 1986-11-06 1988-05-19 Dornier Gmbh Lindauer Schussfadenbremse mit steuerbarer bremswirkung fuer schuetzenlose webmaschinen
CN2052001U (zh) * 1989-08-29 1990-01-31 林忠民 纺织机之纱线供应装置
DE4131652A1 (de) * 1991-09-23 1993-04-01 Iro Ab Webmaschine und eintragbremse fuer webmaschinen
DE4409450C2 (de) * 1994-03-18 1996-12-05 Memminger Iro Gmbh Fadenbremseinrichtung
DE10150504A1 (de) * 2001-10-12 2003-04-17 Iropa Ag Fadenbremse

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453012A1 (fr) * 1990-04-17 1991-10-23 Picanol N.V. Frein de fil

Also Published As

Publication number Publication date
CN1902114B (zh) 2011-08-31
EP1699724A1 (fr) 2006-09-13
CN1902114A (zh) 2007-01-24
DE502004011373D1 (de) 2010-08-19
DE10361773A1 (de) 2005-07-28
WO2005066055A1 (fr) 2005-07-21

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