EP1154946B1 - Vorrichtung und verfahren zum variierenden bremsen eines laufenden fadens - Google Patents
Vorrichtung und verfahren zum variierenden bremsen eines laufenden fadens Download PDFInfo
- Publication number
- EP1154946B1 EP1154946B1 EP00907612A EP00907612A EP1154946B1 EP 1154946 B1 EP1154946 B1 EP 1154946B1 EP 00907612 A EP00907612 A EP 00907612A EP 00907612 A EP00907612 A EP 00907612A EP 1154946 B1 EP1154946 B1 EP 1154946B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- braking effect
- force
- braking
- 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
Links
Images
Classifications
-
- 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
-
- 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 device specified in the preamble of claim 1 Type and a method according to the preamble of claim 13.
- a controlled thread brake is useful in a rapier or projectile weaving machine used the thread entered in the shed for to give an optimal entry process important specific tension profile, that varies during the entry process. For example, it is in a rapier weaving machine expedient to brake harder at the beginning of the entry, via the following Acceleration phase of the handler to reduce the braking effect or to passivate during the handover phase from the handler gripper to the slave gripper to brake harder again, at least over the acceleration phase of the slave gripper to reduce or passivate the braking effect, and against Brake the end of the entry again until the thread is inserted from the slave gripper is released.
- a controlled thread brake known from EP-A-0 524 429 either not at all or with a single one set on the adjuster Braking force value braked.
- the braking force can be adjusted manually on the adjusting device choose. A change in force is due to an entry process short time available. Because the braking force for all braking phases is the same, it represents a compromise, so that the braking effect for one Operating phase too small and too strong for another. Because it is expedient, during different phases of an entry process with different Braking effects.
- the invention has for its object a device of the aforementioned To create a way that is structurally easy during each entry process can create timed thread tension profile, or specify a method, with which an optimal thread tension profile can be achieved with each insertion process.
- the second actuator is the force determining the braking effect only adjusted when the braking effect is passivated is the required one Braking effect exactly at the time or at the angular position of the main shaft Weaving machine available, on which the first actuator has the braking effect activated quickly Since the time interval between two operating phases with activated Braking effect can be used to vary the force, and the first actuator each Can activate or passivate the braking effect extremely quickly achieve an optimal tension profile of the thread, especially by the fact that the first and second actuators share the task of activating the braking effect or passivate and vary the strength.
- An electrical, electromagnetic, piezoelectric, electromechanical, pneumatic or hydraulic second actuator used who uses the times when the braking effect is passivated to change the force while the first actuator only for quick activation and passivation of the braking effect responsible for.
- Both actuators are preferably connected to a common control device, which ensures that the second actuator is only activated if the first actuator has passivated the braking effect.
- the second actuator can be particularly useful in a so-called window-disk thread brake use to adjust the contact pressure of the spring plate with the abutment bolt having the window for passivating the braking effect cooperates.
- the control of the second actuator is control engineering simply because the already predetermined rotational positions of the abutment pin or the first actuator with a passivated or activated braking effect are known. It can be an abutment pin with only one peripheral Windows or with several peripheral windows are used, with a first Actuator that either rotates step by step or in one direction continues to rotate.
- the second actuator is for adjusting the force with a passivated braking effect but can also be used for controlled band brakes or disc brakes. requirement is only a first actuator that quickly sets the braking effect set passivate and activate enough.
- the spring plate is expediently arranged on a rotatably supported holder, whose rotational position together with the force of the spring plate determines the force, and the second actuator is a rotary actuator for the holder. It is convenient the second actuator is designed so that it corresponds to a certain force Holds the rotary position automatically.
- control device may be a logical actuation inhibitor included, which prevents the second actuator from adjusting the force for as long as until the braking effect is passivated by the first actuator.
- the second actuator can move back and forth between at least two positions be producible, the predetermined values or a predetermined ratio between represent the values of force. Changes in the predetermined values or the relationship between the predetermined values can still be on the control side be made.
- the force setting device is also a manual one Has actuation. Then the force can be achieved as with conventional window spring-disk thread brakes also change by hand, but not during an entry process.
- the second actuator can namely have a slower response than the first actuator, because for the change in force that is in practice is usually only relatively minor, with a passive braking effect during an entry process enough time is available.
- the braking effect can be also use the second actuator to continuously adjust the determining force.
- a controlled thread brake 1 has a U-shaped support frame 2, in one leg 3 an inlet opening 4 for a thread Y and thus a thread take-off eyelet 7 is provided in alignment on the other leg 6.
- a thread delivery device indicated only by dashed lines F downstream and a weaving machine W consuming thread Y upstream, preferably a rapier or projectile loom.
- a web 9 of the support frame 2 rotatably supports a dome-like near the leg 3 Holder 10, which can be rotated by means of an adjusting device E, namely in the embodiment shown by a second actuator M2, which as Rotary drive and positioner designed for the holder 10 and either on the support frame 2 or is fixed in a holder 17.
- the adjusting device E additionally equipped with a manual control, not shown, that it allows either to rotate the holder 10 relative to the second actuator M2, or to adjust the second actuator M2 with the holder 10 relative to the support frame 2.
- a spring plate 14 made of resilient material fixed with screws 13.
- the end of the spring plate 14 could also in the longitudinally slotted holder 10 be tied.
- One for thread take-off eyelet 7 facing end region of the spring plate 14 is supported on one in the support frame 2 rotatable abutment pin 15 approximately parallel to the holder 10.
- the spring lamella 14 represents a first brake element B, while the abutment pin 15 second braking element B 'forms.
- the spring plate 14 lies with a certain force resilient on the circumference of the abutment pin 15. The force is adjustable using the second actuator M2 and / or, if present, by means of manual actuation of the Adjustment device E.
- the thread Y runs with a predetermined thread path between the Spring plate 14 and the abutment pin 15 through. That of the thread take-off eyelet 7 facing end of the spring plate 14 is expediently bent, so that the thread Y in the thread brake 1 essentially only in the contact area between the spring plate 14 and the abutment pin 15 braked by clamping becomes.
- the abutment pin 15 is operatively connected to a first actuator M1, who sits in the holder 17.
- the first actuator M1 is, for example, a permanent magnet motor, which continues to rotate gradually in one direction or between can rotate two predetermined rotary positions back and forth. It is a quickly responsive rotary drive for the abutment pin 15. In the shown Embodiment, the range of rotation is e.g. between 90 and 180 °.
- the abutment pin 15 is on a part of its circumference with a cross-sectional reducing Window 19 provided.
- the abutment pin forms axially on both sides of the window 19 15 in cross section circular coils 20, 21, which serve as support surfaces serve for the spring plate 14. 1 and 2, the window 19 is one extending over about 90 ° in circumferential length reduction in cross section Abutment bolt 15 with a convex bottom 22 and linear or rounded Transitions 23 formed in the peripheral surface.
- the weaving machine W is equipped with a control unit CU, with which the thread entry is controlled.
- the control CU is in turn, possibly via a further electronic control device C, in conjunction with the first actuator M1, which has a rotary drive for the Abutment pin 15 forms, and also with the second actuator M2, which is remote controlled actuatable adjustment device E for the holder 10 or the force with which the two brake elements B, B 'are pressed against one another in a resilient manner.
- the force with which the spring plate 14 presses against the abutment pin 15 is variable by means of the second actuator M2, and likewise via the expediently common control device C. Care is taken on the control side, that actuation of the second actuator M2 at least essentially exclusively then occurs when the first actuator M1 the abutment pin 15 in the 2 rotated and passivated the braking effect. 1 is the Braking effect activated and as high as set by the second actuator M2 is.
- the braking effect to change the determining force is done by turning the holder 10 in the rotational position of the abutment pin 15 of Fig. 2, at which the thread Y window 19 runs practically without brakes or with a very low braking effect, and the spring plate 14 is supported on the ring bundles 20, 21.
- a change in the force could also be caused by a transverse displacement of the holder 10 take place in the support frame 2, namely by means of a displacement drive second actuator M2.
- the window spring disk brake shown in FIGS. 1 and 2 is only a non-restrictive one Example of a controlled thread brake.
- the principle of operation while an entry process to change the force with which two braking elements against each other is generally useful for thread brake types where the braking effect is quickly activated and passivated by means of a first actuator can be, so that the second actuator in operating phases with passivated braking effect has enough time, even during the same entry process Power to change.
- This means that the concept according to the invention also applies to disc brakes, Band brakes or can also be used for multi-disc brakes, in which the first Actuator quickly turns the braking effect on and off, while the second actuator changes the force that determines the respective braking effect.
- Fig. 1 it is indicated that the control device C for positioning or activation the braking effect on the first actuator M1 gives commands i- or i +, however to the second actuator M1 control commands (-) or (+) if the braking effect determining force is to be changed.
- This is conveniently done with reference on the angle of rotation of the weaving machine, which is only indicated schematically, as by the Angle sign indicated at CU.
- FIG. 3 is to illustrate how a particular thread tension profile is achieved by means of the controlled thread brake 1 for a rapier weaving machine W, in which the thread Y is first moved from a bringer gripper to approximately the middle of the The shed is transported, then handed over to and from the slave gripper completely pulled through the compartment and finally released.
- the three hatched Fields in the diagram of FIG. 3 illustrate operating phases with activated braking effect, during the intermediate, non-hatched fields operational phases show with passivated braking effect.
- Thread tension corresponds to f1.
- the first actuator M1 has received the command i- and passivates the braking effect.
- the thread brake 1 is in the position from Fig. 2.
- the first actuator M1 receives the command i +, so that it activates the braking effect, which begins almost instantaneously like this is predetermined by the set value f1.
- This braking effect is in the first hatched field until the command i- from the control device C to the first actuator M1 is given, and this the braking effect practically suddenly passivated.
- the second actuator M2 can already receive the signal (+) received so that it starts at an angular position x1, the force from the value f1 to increase the value f2, which is reached at an angular position x2, at the latest for the angular position, for the second hatched field, the first actuator M1 receives the i + command again and the braking effect is reactivated. The The braking effect is then determined by the value f2, which is initially maintained, until the first actuator M1 receives the i- command at a further angular position and the braking effect is suddenly passivated.
- the Value f2 back to value f1 (or another one) by means of the second actuator M2 Value) so that the value f1 (or another value) is at an angular position x4 is present.
- the braking effect is set to value f1 to create the third hatched field before finally using the command i- the braking effect is again passivated to the first actuator M1.
- the Thread brake 1 is ready for the next entry process, e.g. with the value to start f1.
- Fig. 3 shows that compared to the speed with which the actuator M1 the braking effect Activate and passivate, the actuator M2 has much more time available has, or a larger angular range than this, to the force to change. This enables a relatively optimal tension profile in the thread Y to achieve without a special control side for the second actuator M2 To drive effort.
- a different tension profile could be required for a projectile weaving machine, than that shown in Fig. 3 for example for a rapier weaving machine. But also with A projectile weaving machine has operating phases during each entry process or weaving machine cycle (at least one operating phase) in which the braking effect is passivated. Then the force that determines the braking effect is adjusted, as soon as the first actuator M1 reactivates the braking effect.
- the second actuator M2 adjust two different forces or move between these two forces and switch on.
- the second actuator M2 continuously to generate certain curve profiles with that by the first actuator generated curve profile are superimposed.
- the setting of the respective force can be carried out by the control device C alone.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Braking Arrangements (AREA)
Abstract
Description
- Fig. 1
- eine Perspektivansicht einer gesteuerten Fadenbremse in einer Betriebsstellung bei aktivierter Bremswirkung,
- Fig. 2
- einen Schnitt zu Fig. 1, in einer Betriebsphase mit passivierter Bremswirkung und bei der Verstellung der die Bremswirkung bestimmenden Kraft, und
- Fig. 3
- ein Diagramm zum Betriebsverhalten der Fadenbremse der Fig. 1 und 2 bei Verwendung für eine Greifer-Webmaschine.
Claims (13)
- Vorrichtung zum variierenden Bremsen eines laufenden Fadens (Y), insbesondere gesteuerte Fadenbremse (1) für eine Webmaschine (W) wie eine Greifer- oder Projektilwebmaschine, mit mindestens zwei mit einstellbarer, die Bremswirkung bestimmender Kraft federnd aneinanderdrückbaren Bremselementen (B, B'), zwischen denen der Faden (Y) durchläuft, einem ersten Aktuator (M1) zum zeitweisen Passivieren der Bremswirkung, einer Steuervorrichtung (C), an die der erste Aktuator angeschlossen ist, und einer Einstellvorrichtung für die Kraft, dadurch gekennzeichnet, dass die Einstellvorrichtung mittels eines zweiten, ebenfalls mit einer Steuervorrichtung (C) verbundenen Aktuators (M2) ausschließlich bei durch den ersten Aktuator (M1) passivierter Bremswirkung betätigbar ist.
- Vorrichtung nach Anspruch 1, gekennzeichnet durch einen elektrischen, elektromagnetischen, piezo-elektrischen, elektromechanischen, pneumatischen oder hydraulischen zweiten Aktuator (M2).
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass beide Aktuatoren (M1, M2) an eine gemeinsame Steuervorrichtung (C) angeschlossen sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Bremselemente (B, B') eine Federlamelle (14) und ein mittels des ersten Aktuators (M1) verdrehbarer Widerlagerbolzen (15) für die Federlamelle (14) sind, dass der Widerlagerbolzen (15) wenigstens ein umfangsseitiges Fenster (19) aufweist, das in mit dem Fenster der Federlamelle zugewandter Drehposition des Widerlagerbolzens (15) die Bremswirkung passiviert, und dass der zweite Aktuator (M2) an der Einstellvorrichtung (E) der Federlamelle (14) angreift.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Federlamelle (14) an einem drehbar abgestützten Halter (10) angeordnet ist, dessen Drehstellung die Kraft bestimmt und dass der zweite Aktuator (M2) ein Drehantrieb für den Halter (10) ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass in der Steuervorrichtung (C) für den Halter (10) unterschiedliche Drehstellungen gespeichert und über den zweiten Aktuator (M2) wahlweise einstellbar sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Steuervorrichtung (C) eine logische Betätigungs-Inhibitionseinrichtung für den zweiten Aktuator (M2) aufweist, derart, dass der zweite Aktuator (M2) ausschließlich betätigbar ist bei die Bremswirkung passivierendem ersten Aktuator (M1).
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der zweite Aktuator (M2) zwischen mindestens zwei Stellungen (+ und -) hin- und herverstellbar ist, die vorbestimmte Werte oder ein vorbestimmtes Verhältnis zwischen den Werten der Kraft repräsentieren.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Einstellvorrichtung (E) zusätzlich eine manuelle Betätigung aufweist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der zweite Aktuator (M2) ein Schaltmagnet, ein Permanentmagnetmotor, ein Drehmagnet, ein Schrittmotor, ein LAT-Elektromotor oder ein pneumatischer bzw. hydraulischer Motor ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der zweite Aktuator (M2) ein langsameres Ansprechverhalten als der erste Aktuator (M1) aufweist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die die Bremswirkung bestimmende Kraft mittels des zweiten Aktuators (M2) ausschließlich bei passivierter Bremswirkung und stufenlos verstellbar ist.
- Verfahren zum variierenden Bremsen eines zu einer Webmaschine wie einer Greifer- oder Projektilwebmaschine laufenden Fadens (Y) während eines Fadeneintragvorganges und in einer gesteuerten Fadenbremse (1), wobei die Fadenbremse (1) wenigstens zwei mit einstellbarer, die Bremswirkung bestimmender Kraft federnd aneinander drückbare Bremselemente (B, B') aufweist, zwischen denen der Faden durchläuft, und wobei die Fadenbremse einen ersten Aktuator (M1) zum Passivieren der Bremswirkung und eine Einstellvorrichtung (E) für die Kraft aufweist, und wobei bei dem Verfahren während eines Faden-Eintragvorganges die Bremswirkung gesteuert wenigstens einmal passiviert und wieder aktiviert wird, dadurch gekennzeichnet, dass die die Bremswirkung bestimmende Kraft mittels eines zweiten Aktuators (M2) und ausschließlich bei passivierter Bremswirkung verstellt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9900665A SE9900665D0 (sv) | 1999-02-23 | 1999-02-23 | Vorrichtung und Verfahren zum variierenden Bremseneines laufenden Fadens |
SE9900665 | 1999-02-23 | ||
PCT/EP2000/001492 WO2000050326A1 (de) | 1999-02-23 | 2000-02-23 | Vorrichtung und verfahren zum variierenden bremsen eines laufenden fadens |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1154946A1 EP1154946A1 (de) | 2001-11-21 |
EP1154946B1 true EP1154946B1 (de) | 2003-05-07 |
Family
ID=20414619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00907612A Expired - Lifetime EP1154946B1 (de) | 1999-02-23 | 2000-02-23 | Vorrichtung und verfahren zum variierenden bremsen eines laufenden fadens |
Country Status (7)
Country | Link |
---|---|
US (1) | US6505653B1 (de) |
EP (1) | EP1154946B1 (de) |
KR (1) | KR20010111493A (de) |
CN (1) | CN1159200C (de) |
DE (1) | DE50002070D1 (de) |
SE (1) | SE9900665D0 (de) |
WO (1) | WO2000050326A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7543610B2 (en) * | 2006-06-16 | 2009-06-09 | Sultex Ag | Thread clamp for a rapier head |
BE1016183A3 (nl) * | 2004-09-08 | 2006-04-04 | Picanol Nv | Werkwijze en inrichting voor het klemmen van een inslagdraad bij een weefmachine. |
EP1811068B1 (de) * | 2006-01-24 | 2009-06-17 | Sultex AG | Gesteuerte Fadenbremse |
BE1018327A3 (nl) * | 2008-10-31 | 2010-09-07 | Picanol Nv | Draadrem en werkwijze om de draadrem aan te wenden. |
US9908739B2 (en) * | 2012-04-24 | 2018-03-06 | Curt G. Joa, Inc. | Apparatus and method for applying parallel flared elastics to disposable products and disposable products containing parallel flared elastics |
ITUB20155266A1 (it) * | 2015-10-30 | 2016-01-30 | Roj S R L | Freno elettromagnetico pilotato per il controllo della tensione dei fili di trama in macchine tessili |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59105505D1 (de) * | 1990-09-10 | 1995-06-22 | Rueti Ag Maschf | Fadenbremse für Webmaschinen. |
DE9113430U1 (de) * | 1991-07-22 | 1992-12-24 | Sobrevin Société de brevets industriels-Etablissement, Vaduz | Vorrichtung zur unterschiedlichen Bremsung laufender Fäden, Drähte o.dgl. |
CH686955A5 (de) * | 1992-03-16 | 1996-08-15 | Der Loepfe Ag Geb | Fadenbremseinrichtung. |
DE9215226U1 (de) | 1992-11-09 | 1994-05-11 | Sobrevin Société de brevets industriels-Etablissement, Vaduz | Fadenbremse |
US5476122A (en) * | 1993-03-05 | 1995-12-19 | Lindauer Dornier Gesellschaft Mbh | Weft thread brake responsive to yarn characteristics in a loom |
IT1310749B1 (it) * | 1999-11-30 | 2002-02-22 | Lgl Electronics Spa | Metodo e dispositivo di controllo di freni di trama elettrocomandatiper la regolazione automatica della tensione meccanica del filo di |
-
1999
- 1999-02-23 SE SE9900665A patent/SE9900665D0/xx unknown
-
2000
- 2000-02-23 KR KR1020017010728A patent/KR20010111493A/ko active IP Right Grant
- 2000-02-23 US US09/914,100 patent/US6505653B1/en not_active Expired - Fee Related
- 2000-02-23 EP EP00907612A patent/EP1154946B1/de not_active Expired - Lifetime
- 2000-02-23 DE DE50002070T patent/DE50002070D1/de not_active Expired - Fee Related
- 2000-02-23 CN CNB008053677A patent/CN1159200C/zh not_active Expired - Fee Related
- 2000-02-23 WO PCT/EP2000/001492 patent/WO2000050326A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
CN1344219A (zh) | 2002-04-10 |
US6505653B1 (en) | 2003-01-14 |
EP1154946A1 (de) | 2001-11-21 |
KR20010111493A (ko) | 2001-12-19 |
SE9900665D0 (sv) | 1999-02-23 |
DE50002070D1 (de) | 2003-06-12 |
WO2000050326A1 (de) | 2000-08-31 |
CN1159200C (zh) | 2004-07-28 |
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