EP0856071A1 - Dispositif de frisage de faisceaux ou de rubans de fils synthetiques - Google Patents

Dispositif de frisage de faisceaux ou de rubans de fils synthetiques

Info

Publication number
EP0856071A1
EP0856071A1 EP96934674A EP96934674A EP0856071A1 EP 0856071 A1 EP0856071 A1 EP 0856071A1 EP 96934674 A EP96934674 A EP 96934674A EP 96934674 A EP96934674 A EP 96934674A EP 0856071 A1 EP0856071 A1 EP 0856071A1
Authority
EP
European Patent Office
Prior art keywords
force
roller
pressure plate
pressure
reaction force
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
EP96934674A
Other languages
German (de)
English (en)
Other versions
EP0856071B1 (fr
Inventor
Carsten VOIGTLÄNDER
Joachim Brenk
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.)
NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH
Original Assignee
NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH filed Critical NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH
Publication of EP0856071A1 publication Critical patent/EP0856071A1/fr
Application granted granted Critical
Publication of EP0856071B1 publication Critical patent/EP0856071B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/125—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes including means for monitoring or controlling yarn processing

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • a normal force is exerted on the incoming thread bundle or band by the rollers.
  • the bundle or band is pressed into the stuffer box by the corresponding friction force.
  • the required counterforce becomes that of the other Rolling friction force also creates a back pressure on the pressure plate, which is caused by the restoring force of the compressed material in the stuffer box.
  • This is generally distributed non-uniformly over the length of the stuffer box and generally increases in the direction of conveyance. If the center of the counterpressure forces does not coincide with the point of application of the resultant from the dead weight of the pressure plate and the pressure force acting on the pressure plate, the reaction force required to maintain the force balance of the pressure plate is established between the second roller and the pressure plate. This influences the normal force acting on the incoming bundle of threads or tape by the two rollers, in that it overlaps the force with which the second roller is subjected.
  • the pressing force must be set to different values in order to achieve certain crimping properties or to crimp different materials.
  • a device with a fixed point of application can thus only be selected for a single process in such a way that no reaction force arises on the second roller.
  • a reaction force occurs which leads to a change in the normal carotid.
  • the force with which the second roller is acted on must be changed. This change is usually done by trial and error and is therefore very complex.
  • the distribution of the back pressure exerted by the enclosed thread material on the pressure plate depends on the operating state. You can z. B. change with fluctuations in titer. The center of the counter pressure forces is shifted. As a result, the reaction force changes over time. The resulting fluctuations in the normal force acting on the thread bundle or tape passing through impair the uniformity of the crimp.
  • the invention has for its object to improve a device with the features of the preamble of claim 1, so that a more uniform ripple is achieved and an adjustment of the force with which the second roller is applied is not necessary when changing the pressing force
  • Figure 2 shows the device from the side
  • FIG. 3 shows the device from the front
  • Two rollers 1, 2 which can be driven in the direction indicated by arrows are arranged at the entrance of a stuffer box 3.
  • the axes of the two rollers 1, 2 are parallel to each other.
  • the bearings of the first roller 1 are immovably connected to a machine frame 4, which is only indicated in the drawing.
  • the bearings of the second roller 2 are seated on a swivel arm 5 which is articulated on the machine frame with swivel bearings 6. By pivoting the swivel arms 5, the width of the gap 7 between the rollers 1, 2 is variable.
  • Two piston rods 8 or the like engage on the swivel arm 5. as a result, the second roller 2 can be subjected to a force which is directed onto the first roller 1.
  • the stuffer box 3 has a rectangular cross section. It is enclosed by four wall plates, namely a pressure plate 9, a counter plate 10 and two side plates. These are parallel to the plane of the drawing and are not shown in the drawing. Like the counterplate 10, they are firmly connected to the machine frame.
  • the pressure plate 9 is connected on each side with a rocker 11 to form a rigid unit. This is articulated on the swivel arm 5 so that the hinge axis coincides with the axis of the roller 2
  • a longitudinally extending lateral groove 12 of the pressure plate 9 serves as
  • a force sensor 17 is arranged on the joint between the rocker 11 and the swivel arm 5 so that it responds to a reaction force acting perpendicular to the swivel arm 5.
  • the sensor 17 is connected by a measuring signal transmission line 18 to the input of a controller 19.
  • the controller 19 is connected to the actuator 15 by a line 20.
  • the actuating signal of the controller 19 causes the actuator 15 to shift the sliding block 13 in such a way that the reaction force is adjusted to a predetermined fixed value.
  • the sliding block 13 is always brought into such a position by the actuator 15 that there is a balance between the back pressure exerted by the enclosed thread material on the pressure plate 9 on the one hand and the resulting force from the dead weight of the pressure plate 9 and the pressing force introduced via the piston rod 8 on the other hand.
  • the reaction force is kept essentially at zero.
  • the normal force acting on the incoming bundle of threads or strips is therefore - apart from small control fluctuations - constant, regardless of changes in the operating state.
  • a machine housing 22 which has approximately the shape of a lying L, is on a base plate 21.
  • a bearing 23 for the lower roller 24 is mounted closely next to the leg directed vertically upwards.
  • the bearing of a swivel arm 25 sits at the upper end of the vertical leg.
  • bearing blocks 40 are attached, in each of which a force measuring bearing 41 is installed.
  • the two force measuring bearings 41 sit on extended shaft journals 42 of the upper roller 29.
  • the force measuring bearing 41 consists of an inner ring 43, which receives a roller bearing 44 for the shaft journal 42, and an outer ring 45, which is fixedly connected to the bearing block 40.
  • a gap 46 extends between the inner ring 43 and the outer one Ring 45 over an arc of more than 300 °. At both ends, the gap 46 opens into a bore 47, the axis of which is aligned parallel to the axis of the force measuring bearing 41.
  • the diameter of the bore 47 is considerably larger than the width of the gap 46.
  • the web 48 is arranged horizontally, that is. it is in the nine o'clock position. At two points in a vertical plane, i. H. in the six o'clock position and in the twelve o'clock position, the gap 46 has two opposite semicircular recesses. In it sit with game bolt 49.
  • a pull rod 50 is connected on both sides by a joint 51, consisting of a joint pin 52 and an articulated eye 53 attached to the pull rod 50.
  • the two pull rods 50 are directed essentially vertically and with piston rods 54 from Connected cylinders 55 which sit under the base plate 21.
  • the pivot pin 52 is guided in a horizontal groove in the side parts 35 of the rocker 33, so that it can be displaced in the horizontal direction.
  • a piston rod of a double-acting cylinder 56 which is articulated on the underside of the rocker 33 approximately in the middle, engages on the pivot pin 52.
  • Strain gauges 57 are glued to the two sides of the web 48. These are integrated in a known manner in an electrical measuring bridge. If a reaction force acts on the shaft journal 42 in the vertical direction, the web 48 is subjected to bending and deformed accordingly. The deformation causes strain on the strain gauges 57. As a result, an electrical measurement signal is generated at the measuring bridge, which is a measure of the deformation and thus of the reaction force.
  • the measurement signal is fed to the input of a controller.
  • the controller compares the measurement signal with a predetermined reference variable and generates, according to the difference determined, control signals for valves which influence the pressure medium supply to the double-acting cylinder 56 in the sense of negative feedback, so that the difference between the measurement signal and the reference variable is reduced.
  • the reaction force is regulated to zero or to a desired fixed value, depending on the choice of the command variable.
  • the rocker arm 33 exerts an upward reaction force on the pin 42 and thus also on the swivel arm 25.
  • the pressing force applied with the tie rods 50 has a longer lever arm with respect to the pivot axis of the rocker 33 than the center of the counter pressure forces.
  • the controller influences the pressure medium supply of the double-acting cylinder 56 in such a way that the pivot pin 52 is displaced in the direction of the pivot axis until the reaction force disappears.
  • the bolts 49 protect the web 48 against permanent deformation by acting as stops in the event of an overload

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Tyre Moulding (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

Dans les boîtes frisantes connues, une des quatre plaques de paroi entourant la boîte frisante se présente sous la forme d'une plaque de pression qui peut pivoter autour de l'axe de l'un des deux cylindres qui sont utilisés pour amener le faisceau de fils. Pendant le fonctionnement, ladite plaque de pression est soumise à une force de pression. Le matériau constituant les fils enfermés dans la boîte frisante exerce une contre-pression sur la plaque de pression. Cela provoque une force de réaction sur le palier du cylindre, force qui dépend de l'état de fonctionnement et du point d'application de la force de pression. Cela conduit à des fluctuations de la force normale exercée sur le faisceau de fils par les cylindres, et il s'ensuit un frisage irrégulier. L'invention concerne un nouveau dispositif dans lequel le point d'application de la force de pression peut être déplacé par un organe de réglage (15). Une boucle d'asservissement, qui comprend un capteur de mesure de force (17) servant à mesurer la force de réaction agissant sur le cylindre (2), règle la force de réaction sur zéro par actionnement de l'organe de réglage (15).
EP96934674A 1995-10-16 1996-10-14 Dispositif de frisage de faisceaux ou de rubans de fils synthetiques Expired - Lifetime EP0856071B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19538423A DE19538423C2 (de) 1995-10-16 1995-10-16 Vorrichtung zum Kräuseln von synthetischen Fadenbündeln oder -bändern
DE19538423 1995-10-16
PCT/EP1996/004461 WO1997014831A1 (fr) 1995-10-16 1996-10-14 Dispositif de frisage de faisceaux ou de rubans de fils synthetiques

Publications (2)

Publication Number Publication Date
EP0856071A1 true EP0856071A1 (fr) 1998-08-05
EP0856071B1 EP0856071B1 (fr) 1999-07-21

Family

ID=7774942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934674A Expired - Lifetime EP0856071B1 (fr) 1995-10-16 1996-10-14 Dispositif de frisage de faisceaux ou de rubans de fils synthetiques

Country Status (7)

Country Link
US (1) US6009606A (fr)
EP (1) EP0856071B1 (fr)
JP (1) JP3059219B2 (fr)
AT (1) ATE182375T1 (fr)
DE (3) DE19538423C2 (fr)
ES (1) ES2136434T3 (fr)
WO (1) WO1997014831A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090118019A1 (en) * 2002-12-10 2009-05-07 Onlive, Inc. System for streaming databases serving real-time applications used through streaming interactive video
US7524349B2 (en) * 2005-05-03 2009-04-28 Donaldson Company, Inc. Air cleaner; air filter cartridge and method of manufacturing
US8414675B2 (en) * 2007-04-03 2013-04-09 Donaldson Company, Inc. Air cleaner; air filter cartridge and method of manufacturing
EP2098622B1 (fr) * 2008-03-03 2011-03-23 M.A.E. S.p.A. Dispositif pour friser des filaments de fibres synthétiques et méthodes de contrôle
US9033750B2 (en) * 2012-08-15 2015-05-19 Tyco Electronics Corporation Electrical contact
US9796492B2 (en) 2015-03-12 2017-10-24 Graco Minnesota Inc. Manual check valve for priming a collapsible fluid liner for a sprayer
CN115739435A (zh) 2019-05-31 2023-03-07 固瑞克明尼苏达有限公司 手持式流体喷雾器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL187643B (nl) * 1953-05-28 Olin Corp Werkwijze voor het door middel van elektrolyse vormen van een de hechting aan een substraat verbeterende bekledingslaag op een koperfolie.
US2856640A (en) * 1954-02-01 1958-10-21 Deering Milliken Res Corp Apparatus for crimping textile strands
US2862279A (en) * 1956-04-10 1958-12-02 Allied Chem Tow crimping apparatus
DE1877098U (de) * 1963-06-08 1963-08-08 Neumuenster Masch App Stauchkraeuselvorrichtung.
US3353223A (en) * 1963-08-19 1967-11-21 Eastman Kodak Co Method and apparatus for crimping
US3225415A (en) * 1964-08-28 1965-12-28 Du Pont Defect responsive apparatus
CH529856A (de) * 1970-08-10 1972-10-31 Vepa Ag Vorrichtung zum Kräuseln synthetischer Fadenscharen
CH595622A5 (fr) * 1976-06-28 1978-02-15 Heinrich Gruenbaum
US4041584A (en) * 1976-09-29 1977-08-16 E. I. Du Pont De Nemours And Company Loading apparatus for crimper rolls
DE2733455C2 (de) * 1977-07-25 1982-12-30 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Stauchkammer zur Texturierung von Chemiefaser
US4547934A (en) * 1984-01-31 1985-10-22 Phillips Petroleum Company Crimped staple fiber
DE3626522A1 (de) * 1986-06-26 1988-02-11 Vepa Ag Stauchkammerkraeuselvorrichtung zum kraeuseln synthetischer fadenscharen
DE3631905A1 (de) * 1986-09-19 1988-03-31 Bayer Ag Stauchkammerkraeusel und verfahren zur herstellung von gekraeuselten synthetischen fasern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9714831A1 *

Also Published As

Publication number Publication date
DE19538423C2 (de) 1997-08-21
ATE182375T1 (de) 1999-08-15
WO1997014831A1 (fr) 1997-04-24
US6009606A (en) 2000-01-04
DE59602497D1 (de) 1999-08-26
EP0856071B1 (fr) 1999-07-21
ES2136434T3 (es) 1999-11-16
DE29617798U1 (de) 1996-12-12
JP3059219B2 (ja) 2000-07-04
DE19538423A1 (de) 1997-04-17
JPH10512338A (ja) 1998-11-24

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