EP0524429B1 - Vorrichtung zur unterschiedlichen Bremsung laufender Fäden, Drähte oder dergleichen - Google Patents

Vorrichtung zur unterschiedlichen Bremsung laufender Fäden, Drähte oder dergleichen Download PDF

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Publication number
EP0524429B1
EP0524429B1 EP92110334A EP92110334A EP0524429B1 EP 0524429 B1 EP0524429 B1 EP 0524429B1 EP 92110334 A EP92110334 A EP 92110334A EP 92110334 A EP92110334 A EP 92110334A EP 0524429 B1 EP0524429 B1 EP 0524429B1
Authority
EP
European Patent Office
Prior art keywords
shaft
thread
section
rotary drive
region
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
EP92110334A
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German (de)
English (en)
French (fr)
Other versions
EP0524429A1 (de
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.)
Sobrevin Societe de Brevets Industriels
Original Assignee
Sobrevin Societe de Brevets Industriels
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Filing date
Publication date
Application filed by Sobrevin Societe de Brevets Industriels filed Critical Sobrevin Societe de Brevets Industriels
Publication of EP0524429A1 publication Critical patent/EP0524429A1/de
Application granted granted Critical
Publication of EP0524429B1 publication Critical patent/EP0524429B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/23—Actuating means angular magnetic, e.g. rotary solenoids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/24—Servomotors
    • 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 according to the preamble of claim 1.
  • a generic device shows the French patent application 23 75 366. From there, a device is known for different brake-running threads. Two mutually sprung brake parts are cyclically intensified so that there is a cyclical change in the braking force. The spring force with which the two plate springs press against one another must be so great that there is sufficient thread braking. On the other hand, it must not disadvantage the entry of the shot. It must also be taken into account that knots that can pass through spring-loaded tabs without breaking the thread.
  • the invention is therefore based on the object of designing a device of the type in question of a simple construction in such a way that, in addition to a particularly quickly responsive method of operation, on the one hand there is always sufficient braking force and on the other hand the passage of the thread, even at the highest weft thread speeds and at short intervals, is cyclical Weft entry of the loom is not affected.
  • the object of the invention is achieved in a generic device by a cyclical change in the braking force from a motor rotation of one of the brake parts.
  • the utility value of a device of the type in question is significantly increased.
  • the device can be optimally adapted to the mode of operation of the weaving machine, even when working at the highest weft speeds with cyclical weft insertion taking place at short intervals. Nevertheless, the braking force of the brake parts passed by the thread is always sufficient. During the weft insertion, the braking force is practically zero due to the motor rotation of one of the brake parts. Accordingly, the thread can run through the device without interference, even if there are knots on the thread. After completion of the weft entry, the brake parts again come into braking position with respect to one another due to the rotation of the motor-driven brake part in question. The thread is therefore optimally protected when passing through the device, which is ultimately distinguished by a particularly good weaving quality.
  • the one brake part is a motor-driven shaft driven by a resilient tab, with a cross-section-reducing area on part of its circumference.
  • the motor-driven shaft takes up such a position that the thread passes through the window formed by the area-reducing area.
  • To Completion of the weft entry rotates the shaft into a position in which the cross-section-reducing area lies outside the path of the thread. Then the thread is pressed against the circumference of the shaft by the resilient tab.
  • annular collars are provided axially on both sides of the area in cross section as a supporting surface of the resilient tab.
  • the area then forms a window framed on both sides, through which the thread is pulled in the non-braked position.
  • the tab can therefore be supported on the shaft with unchanged force, even if the window reaches the tab opposite. This is the position in which the thread can pass both brake parts without obstruction.
  • the bearing-side end section of the freely projecting shaft is designed as a rotor of a stationary electromagnetic rotary drive. This can be conveniently adapted to the way the weaving machine works. This ensures that the thread can travel through the window of the shaft at the right time when the weft is inserted.
  • the electromagnetic rotary drive allows the shortest possible control times.
  • the electrical coupling of the rotary drive with the control of the weaving machine means that the electromagnetically driven shaft always assumes its intended position at the right moment.
  • One version is characterized in that the window has a cross-sectional reduction with a convex bottom extending over a circumferential length of approximately 90 ° is formed with a linear transition into the peripheral surface.
  • the window is formed by an eccentric arrangement of a circular section of smaller diameter.
  • the braking force with which the tab rests on the shaft can be regulated in a simple manner in that the tab unloads on a cantilevered mandrel which can be rotated in its frictional mounting for regulating the resilient contact between the tab and the shaft.
  • the device according to the first embodiment is designated as a whole by the number 1 and has a U-shaped support frame 2.
  • a U-shaped support frame 2 In one upwardly pointing U-leg 3 there is an inlet opening 4 for a thread 5. Aligned with the inlet opening 4 is on the other U-leg 6 of the support frame 2, a thread take-off eyelet 7 is provided.
  • the device is preferably arranged downstream of a thread delivery device, not shown. After passing through the device 1, the thread then arrives at a weaving machine 8.
  • the web 9 of the U-shaped support frame 2 receives a self-supporting mandrel 10 near the U-leg 3 provided with the inlet opening 4. Its free end, which is directed upward, projects slightly beyond the U-leg 3.
  • the lower end of the mandrel 10 is frictionally seated in a bearing 11 fastened to the U-web 9 which the mandrel 10 can be rotated while overcoming the bearing friction.
  • One end 14 'of a tongue 14 made of spring material is connected to the mandrel 10 above the web 9 by means of screws 13.
  • the arm 10 could also be slit longitudinally for the captive entry of the end 14 'of the tab 14.
  • the other end 14' ' is supported on a motor-driven shaft 15, which extends parallel to the mandrel 10 near the U-leg 6.
  • the tab 14 sprung in the direction of the shaft 15 and the shaft 15 represent two brake parts B, B ', between which the thread 5 passes.
  • Both the mandrel 10 and the shaft 15 are arranged so that they do not interfere in the path of passage of the thread 5 and allow the same to pass centrally through the inlet opening 4 and thread take-off eye 7.
  • the end 14 ′′ lying on the shaft 15 beyond the linear support is angled counter to the thread pulling direction.
  • the shaft 14 rotates through 180 ° in each case.
  • the Motor-driven rotary shaft 15 is provided with a cross-section-reducing window 19 on part of its circumference. Axially on both sides of the window 19, the shaft 15 forms annular collars 20, 21 in cross section, which serve as support surfaces for the resilient tab 14.
  • the window 19 is formed by a reduction in cross section of the shaft 15 extending over approximately 90 ° circumferential length with a convex bottom 22 with a linear transition 23 into the peripheral surface of the shaft 15.
  • the weaving machine 8 is equipped with a controller 24 illustrated in the block diagram according to FIG. 7, by means of which the weft insertion is controlled.
  • the controller 24 is in turn connected via an electrical coupling 25 to the electromagnetic rotary drive EM, which according to the exemplary embodiment allows a clocked rotary drive of the shaft 15.
  • the force with which the resilient tab 14 is supported on the shaft 15 can be varied by turning the rotary knob 12 while overcoming the frictional mounting of the mandrel 10.
  • the frictional engagement cannot be overridden by the tab 14.
  • This default setting allows adaptation to different thread entry angles. It would also be possible to displace the shaft itself, preferably in the direction of the springy tab 14 or away from it.
  • the operation of the device is as follows:
  • the thread clamping position can be seen from FIGS. 1 to 3.
  • the shaft 15 assumes a position in which the window 19 is offset by approximately 180 ° with respect to the thread passage point.
  • the end 14 '' is spring-loaded on the shaft 15, realizing one almost linear contact with realization of a braked passage of the thread 5.
  • the coupling 25 gives the electromagnetic rotary drive EM the impulse to turn the shaft 15 through 180 ° into the position according to FIGS. 4 and 5. Because of this, the window 19 comes opposite to the end 14 ′′ of the tab 14, which is then supported on the annular collars 20, 21 of the shaft. Thus there is a free passage for the thread 5. This can pass through the device 1 when the shot is inserted without being affected by braking force.
  • the control 24 gives the weaving machine 8 the command to rotate the shaft 15 through 180 ° into the position according to FIGS. 1 to 3 via the electromagnetic rotary drive EM.
  • This rotation is preferably carried out in such a way that the direction of rotation coincides with the direction of thread travel, so that a jam in front of the shaft 15 is prevented with certainty. There is therefore a cyclical change in the braking force from the motor rotation of one of the brake parts B, B ', namely the brake part B' embodying the shaft 15.
  • the convex bottom 22 of the window allows an optimal passage for the thread, even if there are knots on it, since in a certain way an inlet gusset is formed in the inlet area in front of the window.
  • FIG. 6 shows a different configuration of the window 19 '. This is now formed by an eccentric arrangement of a circular section 15 'of smaller diameter such that the wall of the circular section 15' opposite the window 19 is aligned with the wall of the shaft 15. In this way, a window 19 'in the shape of a sickle is created.
  • Figure 6 illustrates the thread clamping position. The window 19 'enters the thread release position by rotating the shaft 15 by approximately 180 °.
  • the operation of this modified device in FIG. 6 corresponds to the device described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Ropes Or Cables (AREA)
  • Braking Arrangements (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Flexible Shafts (AREA)
EP92110334A 1991-07-22 1992-06-19 Vorrichtung zur unterschiedlichen Bremsung laufender Fäden, Drähte oder dergleichen Expired - Lifetime EP0524429B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9109001 1991-07-22
DE9109001U 1991-07-22
DE9113430U DE9113430U1 (de) 1991-07-22 1991-10-29 Vorrichtung zur unterschiedlichen Bremsung laufender Fäden, Drähte o.dgl.
DE9113430U 1991-10-29

Publications (2)

Publication Number Publication Date
EP0524429A1 EP0524429A1 (de) 1993-01-27
EP0524429B1 true EP0524429B1 (de) 1995-10-25

Family

ID=25958427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110334A Expired - Lifetime EP0524429B1 (de) 1991-07-22 1992-06-19 Vorrichtung zur unterschiedlichen Bremsung laufender Fäden, Drähte oder dergleichen

Country Status (6)

Country Link
US (1) US5305966A (es)
EP (1) EP0524429B1 (es)
JP (1) JPH05331742A (es)
AT (1) ATE129530T1 (es)
DE (2) DE9113430U1 (es)
ES (1) ES2037640T3 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE4306911C1 (de) * 1993-03-05 1993-12-23 Dornier Gmbh Lindauer Schußfadenbremse mit steuerbarer Bremswirkung
IT1272696B (it) * 1993-09-29 1997-06-26 Nuovopignone Ind Meccaniche Ef Frenafilo di trama perfezionato per telaio tessile senza navetta
BE1007898A3 (nl) * 1993-12-22 1995-11-14 Picanol Nv Inrichting voor weefmachines.
DE29500757U1 (de) 1995-01-19 1996-05-15 Sobrevin Société de brevets industriels-Etablissement, Vaduz Anschlaggedämpfte Fadenbremse
US6897855B1 (en) * 1998-02-17 2005-05-24 Sarnoff Corporation Tiled electronic display structure
DE19852794B4 (de) * 1998-11-16 2004-03-25 Lindauer Dornier Gmbh Steuerbare Schussfadenzubringer- und -klemmvorrichtung für Webmaschinen
SE9900665D0 (sv) * 1999-02-23 1999-02-23 Iro Patent Ag Vorrichtung und Verfahren zum variierenden Bremseneines laufenden Fadens
DE10013625A1 (de) 2000-03-18 2001-09-27 Dornier Gmbh Lindauer Fadenbremse, insbesondere Schussfadenbremse für Webmaschinen
US7543610B2 (en) * 2006-06-16 2009-06-09 Sultex Ag Thread clamp for a rapier head
JP4003710B2 (ja) * 2003-07-23 2007-11-07 株式会社豊田自動織機 ジェットルームにおける緯入れ制御装置
EP1811068B1 (de) * 2006-01-24 2009-06-17 Sultex AG Gesteuerte Fadenbremse
US8960596B2 (en) 2007-08-20 2015-02-24 Kevin Kremeyer Energy-deposition systems, equipment and method for modifying and controlling shock waves and supersonic flow
US10669653B2 (en) * 2015-06-18 2020-06-02 Kevin Kremeyer Directed energy deposition to facilitate high speed applications

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL70513C (es) * 1944-11-22
US3340903A (en) * 1964-10-10 1967-09-12 Golobart Ramon Balaguer Tensioning and regulating device for the passage of weft threads of different thickness
US3348582A (en) * 1965-09-27 1967-10-24 Grover J Brookshire Weft yarn brake for sulzer loom
CH480255A (de) * 1968-10-23 1969-10-31 Sulzer Ag Fadenbremse
DE2119592C3 (de) * 1971-04-22 1975-02-20 Union Special Maschinenfabrik Gmbh, 7000 Stuttgart Gesteuerter Fadenspanner für Nähmaschinen
JPS5381758A (en) * 1976-12-27 1978-07-19 Nissan Motor Device for gripping weft on shuttleless loom
US4378096A (en) * 1979-11-28 1983-03-29 Burlington Industries, Inc. Tension control for top effect yarn
DE3446567C1 (de) * 1984-12-20 1986-05-07 Lindauer Dornier Gmbh, 8990 Lindau Schussfadenbremse mit stufenweise steuerbarer Bremswirkung
DE3637919A1 (de) * 1986-11-06 1988-05-19 Dornier Gmbh Lindauer Schussfadenbremse mit steuerbarer bremswirkung fuer schuetzenlose webmaschinen
BE1002841A3 (nl) * 1989-02-16 1991-06-25 Picanol N V Naamloze Vennoosch Inrichting voor het remmen van een inslagdraad in een weefmachine.
EP0475892B1 (de) * 1990-09-10 1995-05-17 Sulzer RàœTi Ag Fadenbremse für Webmaschinen

Also Published As

Publication number Publication date
DE9113430U1 (de) 1992-12-24
US5305966A (en) 1994-04-26
ATE129530T1 (de) 1995-11-15
JPH05331742A (ja) 1993-12-14
ES2037640T3 (es) 1996-01-01
ES2037640T1 (es) 1993-07-01
DE59204107D1 (de) 1995-11-30
EP0524429A1 (de) 1993-01-27

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