EP0755359B1 - Thread store with thread draw-off brake - Google Patents

Thread store with thread draw-off brake Download PDF

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Publication number
EP0755359B1
EP0755359B1 EP95908936A EP95908936A EP0755359B1 EP 0755359 B1 EP0755359 B1 EP 0755359B1 EP 95908936 A EP95908936 A EP 95908936A EP 95908936 A EP95908936 A EP 95908936A EP 0755359 B1 EP0755359 B1 EP 0755359B1
Authority
EP
European Patent Office
Prior art keywords
thread
store according
brake strip
take
thread store
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
EP95908936A
Other languages
German (de)
French (fr)
Other versions
EP0755359A1 (en
Inventor
Alberto Gustavo Sarfati
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
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Publication of EP0755359A1 publication Critical patent/EP0755359A1/en
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Publication of EP0755359B1 publication Critical patent/EP0755359B1/en
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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
    • 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
    • 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
    • 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
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/366—Conical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/60—Coupling, adapter or locking 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
    • 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 thread store according to the preamble of claim 1.
  • Such a thread store is known from EP 0 534 263.
  • the thread store disclosed there has an essentially cylindrical storage drum, on the circumferential surface of which thread turns can be deposited.
  • the thread supply stored there can be withdrawn overhead through a central draw-off eye.
  • a thread brake is provided there so that the thread can be drawn off with a specific thread tension.
  • a brake strip made of a flexible material is glued into a truncated cone-shaped holding member.
  • the inside of the holding element is spring-loaded on a trigger sliding surface of the drum end region.
  • the thread is clamped between the take-off sliding surface and the braking surface of the brake strip in this thread storage device.
  • the funnel-shaped braking surface rests on a curved trigger sliding surface of the front drum area.
  • the contact surfaces between the braking surface and the trigger sliding surface are minimal. Because of the only punctiform thread clamping, the brake strip is only loaded linearly there. In the case of a thread store constructed similarly to the described embodiment, this has the consequence that the thread imprints the brake strip over the course of time on a circumferential washboard-shaped wave structure. With a brake strip destroyed in this way, it is no longer possible to pull off the thread evenly. As a result of the cushioning acting only at the front and in the coaxial direction to the drum axis, the brake ring performs an overall movement when the thread is drawn off, which occurs during a complementary radial cushioning, as is the case with the memory on the market, degenerates into a wobble movement.
  • a funnel-shaped holding element according to US Pat. No. 4,068,807, which has a rubber disc which serves as a braking element, performs a purely axial evasive movement.
  • a funnel-shaped holding member is provided in the support area on a curved drum face with a metal coating which, due to the only axially acting forces, pinches the thread at a point.
  • a large number of thread brakes are known from WO 91/14032, which are essentially actively modulated. There the thread is mostly angled towards the brake strip and pulled under the latter. From Fig. 29 there plate-like brakes in the form of a flat truncated cone jacket are already known, which pinch the thread at a point.
  • a thread store is known from AT 328 993, in which the end face of a measuring drum is designed as a conical surface which interacts with the end face of a clamping plate.
  • the clamping plate is provided with an insert made of elastic material in the area interacting with the conical surface.
  • the clamping plate is rotatably mounted on a sleeve which is displaceable in a sleeve. When the thread tension changes, the clamping plate can lift off the end face, in order to modulate the brake pressure acting on the thread, similar to US Pat. No. 4,068,807.
  • the invention is therefore based on the object of developing a generic thread store in such a way that the thread take-off is improved.
  • the contact surface between the braking surface and the trigger sliding surface has been considerably enlarged.
  • the contact surface now has the shape of the surface of a truncated cone.
  • the opening angle of the funnel-shaped brake strip corresponds to the angle of the truncated cone-shaped trigger sliding surface.
  • the thread is pulled between the flat support of the brake strip and the trigger sliding surface.
  • the thread is preferably drawn off in such a way that it leaves the thread brake in the tangential direction to the take-off sliding surface. This is preferably achieved in that the thread take-off eye is located in the region of the imaginary cone tip of the take-off sliding surface. This ensures that the contact force of the brake strip on the storage drum is independent of the thread tension. This results in a constant thread tension.
  • a preferred further development of a thread store of the generic type to reduce an evasive movement of the holding member provides an intermediate layer of elastic material between the holding member and the brake strip.
  • the brake strip itself can consist of highly flexible material due to the intermediate layer of elastic material.
  • the intermediate layer preferably consists of a foam body. If the holding surface of the holding member runs parallel to the brake strip, the intermediate layer has a substantially rectangular cross section. The radial latitude the foam body can be slightly less than the radial width of the brake strip.
  • the thickness of the intermediate layer is preferably smaller than the width of the brake strip, but larger than the maximum thread thickness that can be stored.
  • the elastic intermediate layer between the holding member and the brake strip has the advantage that the brake strip can dodge locally in the direction of the holding member when the thread is drawn off. The evasive movement can thus take place in the direction of the surface normal of the brake strip.
  • an evasive movement of thread brake elements to a braking surface or counter-braking surface has already been proposed.
  • the braking elements are formed by plates.
  • a continuous, consistently smooth braking surface is an advantage.
  • the holding member is cushioned in the axial direction.
  • the brake strip is preferably formed from a thin, internally smooth metal strip, the thickness of which is preferably less than 0.1 mm.
  • the brake strip preferably does not itself have to contribute to the dimensional stability of the brake arrangement, it can be designed to be highly flexible, preferably from a very thin metal foil.
  • the axial cushioning of the holding member can be adjusted to adjust the contact force of the brake ring on the drum end area.
  • the spring travel of the intermediate layer is preferably less than a twentieth, preferably about a fiftieth, of the circumference of the storage drum.
  • the trigger sliding surface which is assigned to the drum end region, also forms a surface section of a cone here. This surface section can be smaller or larger in its radial extent than the width of the braking surface.
  • the thread store preferably has a stationary drum, on which by means of a motor-driven Winding arm the thread turns are deposited.
  • the maximum storable thread thickness is much smaller than the width of the trigger slide surface or the width of the brake strip. Together with the high flexibility of the brake strip and its flat cushioning relative to the holding member, a local deflection (deflection) of the brake strip in the direction of its surface normal can therefore be achieved.
  • the surface section of the brake strip which does not deviate because of the thread intermediate layer, remains essentially at rest, as does the holding member.
  • a version of the invention provides that a truncated cone-shaped braking surface rests flat on the frustoconical end region of the drum, which is supported by a ring section encompassing the storage drum at the drum end.
  • the frustoconical brake strip protrudes freely into the gap between the rings.
  • An annular spring element preferably acts on the support ring.
  • the annular spring element preferably has an internal damping.
  • An elastic foam has proven to be advantageous as the material. With this spring element, the support ring is attached to a mounting ring.
  • the brake assembly consisting of foam body and brake strip together with ring section and fastening ring is clipped into a holding ring with the fastening ring.
  • the retaining ring is fastened to an arm of the storage drum housing and can be displaced in the axial direction together with the retaining ring.
  • the displaceability in the axial direction is preferably carried out by a Piston cylinder unit, which is driven pneumatically. If necessary, a spring can serve as the restoring force. It is also conceivable to use an electromagnet for the axial displacement of the retaining ring.
  • the axial displacement of the retaining ring is accompanied by a change in the preload with which the brake strip rests on the braking surface.
  • the variation of the pretension is preferably carried out in time with the weft insertion of a weaving machine or the like. With this timing, the braking effect can be actively modulated during thread take-off.
  • the braking is increased by compressing the foam ring at the end of the weft insertion.
  • the damping of the spring element has the advantage that, even at high clock rates, no resonance frequencies are excited in the brake arrangement, which can lead to a dirty thread take-off.
  • the thread store 1 has a motor housing 22 which has a thread insertion opening 23 at its lower end, which leads into a hollow shaft of the motor.
  • the motor housing 22 is fastened to a carrier 25.
  • a thread depositing arm 24 rotating around the storage drum 2 is driven by the motor and deposits thread turns 3 on the surface of the storage drum 2.
  • Windows 27 are provided in the storage drum 2, through which organs reach in a known manner to promote the thread turns 3 in the take-off direction.
  • the thread 5 is withdrawn overhead from the storage drum 2, namely through a thread withdrawal eye 4 which is arranged axially to the storage drum 2.
  • the storage drum 2 forms a trigger sliding surface 6 at its trigger end region 2 ′.
  • the trigger sliding surface 6 is formed by a truncated cone, through which the cylindrical surface of the storage drum 2 merges into the end face of the storage drum 2. This trigger sliding surface 6 thus forms a surface section of a cone.
  • the width of the conical surface is preferably about 1 cm.
  • the thread 5 slides in a circumferential manner on this take-off sliding surface 6 when the thread is drawn off.
  • a braking surface 8 is provided which is supported on the pull-off sliding surface 6 in a spring-loaded manner.
  • the thread is thus drawn between two spring-loaded surfaces, namely on the one hand the trigger sliding surface 6 and on the other hand the braking surface 8.
  • the surfaces 6 and 8 lie flat on one another.
  • the braking surface 8 is formed by the inner surface of a braking strip 9.
  • the brake strip 9 consists of an approximately 0.1 mm thick or thinner sheet which is bent to form a truncated cone. The seam of the sheet metal strip runs obliquely to the radial, so that a regular, continuous thread pull tension is achieved. However, it is also provided that the brake strip can, for example, be pressed or deep-drawn from a single piece.
  • the brake strip 9 is highly flexible. It can be deformed with little force.
  • the brake strip 9 is fastened to a holding surface 11 of the holding element 10 by means of a foam body 12, which also has the shape of a truncated cone.
  • the foam body 12 is glued to the outer surface 9 'of the brake strip opposite the braking surface 8.
  • the foam body 12 forms thus an elastic intermediate layer between the holding member 10 and the brake strip 9.
  • the cross section of the foam body 12 is rectangular and the holding surface 11 is also conical and arranged parallel to the brake strip 9.
  • the foam body 12 can be compressed almost by its entire thickness by being acted upon.
  • the thickness of the foam body 12 is smaller than the width of the brake strip 9, but larger than the largest possible storeable thread thickness, so that the spring travel is sufficient for a local evasive movement of the brake strip when the thread is pulled through.
  • the size ratio of the thickness of the intermediate layer and the storage drum circumference is particularly conducive to this.
  • the spring travel of the intermediate layer is less than one twentieth of the circumference of the storage drum, and in the exemplary embodiment it is approximately one fiftieth.
  • the thread thicknesses are predominantly much smaller (at least one order of magnitude) than the intermediate layer thickness.
  • the foam body 12 has a radial extension of approximately 12 mm.
  • the radial extent of the brake strip 9 is approximately 15 mm, so that almost the entire outer surface of the brake strip 9 is glued to the foam body 12.
  • the other side of the foam body 12 is glued to the holding surface 11 of the holding member.
  • the holding surface 11 is formed by a section 10 'of the holding member, which also has a truncated cone shape.
  • One yourself Webs 21, which leave windows 16 open between them, are integrally formed in the withdrawal direction and adjoining the section 10 '.
  • the webs 21 extend radially inwards and axially on the take-off side and open into a holder for a thread take-off bushing 14, which is arranged centrally.
  • the thread take-off bushing 14 has a pull-off eye character and protrudes into a funnel-shaped opening 17 of a fastening part 15, with which the holding member 10 is fastened to a carrier 20 fixed to the housing.
  • the carrier 20 is, however, additionally adjustable in the axial direction compared to the carrier 25.
  • a total of eight compression springs 13 are provided which are aligned axially to the drum axis and which are arranged circumferentially around the cylindrical thread take-off sleeve 14.
  • these springs can be more or less tensioned, as a result of which the contact force of the braking surface 8 on the trigger sliding surface 6 can be adjusted.
  • the fastening part 15 is shifted in the direction x.
  • the fastening part 15 has an external thread section 18 which surrounds the funnel-shaped opening and which can be screwed to the carrier 20 via a nut 19.
  • the partial region 26 of the brake strip 9, which receives the thread 5 between itself and the take-off sliding surface 6, can form a formation 26.
  • the thread is shown greatly enlarged in strength.
  • This formation 26 carries out a circular orbital movement around the axis of the thread storage device when the thread is drawn off, while the remaining area of the brake strip 9 remains at rest on the take-off sliding surface 6 in flat contact.
  • the foam body 12 is compressed at the corresponding points.
  • the evasive movement of the brake strip 9 takes place in the direction of its surface normal, namely in the direction of the parallel holding surface 11. It is considered advantageous that in this embodiment the holding member 10 is essentially not moved when the thread is drawn off.
  • the holding member 10 is funnel-shaped.
  • the funnel opens in the direction of the thread feed.
  • the holding organ 10 is cushioned relative to a fixed ring 30 which can be displaced in the direction x.
  • spirally arranged spring lamellae 31 are provided, which are arranged between a funnel neck surround 32 and the ring body 30.
  • the holding surface 11, to which an annular plastic body 12 is glued is located on the inside of the holding member 10. Parallel to the holding surface 11, but at a distance from it, the brake strip 9 is glued to the foam body 12.
  • the brake strip 9 has a funnel-shaped shape and forms the braking surface 8 with its inner surface.
  • the braking surface 8 lies flat on a frustoconical surface section of the storage drum 2. This frustoconical surface section forms the trigger sliding surface 6.
  • the thread is pulled between the trigger sliding surface 6 and the braking surface 8. Both surfaces are made of metal and are essentially smooth. A braking effect is achieved in that the brake strip 8 is pressed onto the trigger sliding surface 6 due to the resilient action by the spring elements 31. When the thread 5 is pulled through this thread brake, there is an evasive movement due to a slight compression of the plastic part 12.
  • the thread take-off eye 4 is arranged coaxially to the axis of the storage drum 2.
  • the axial distance of the thread take-off eye 4 from the end face of the storage drum 2 is chosen so that the thread 5 leaves the take-off sliding surface 6 parallel to the surface tangent.
  • the thread therefore always runs on the imaginary extension of the conical surface of the trigger sliding surface 6.
  • the brake strip 8 projects beyond the circumferential contour of the cylindrical storage drum 2 with an outer edge region 8 ′.
  • the cylindrical section of the storage drum 2 merges into the frustoconical trigger sliding surface 6.
  • an annular gusset is formed, in which the thread 5 runs into the thread brake. The thread therefore does not run against an edge, which results in less thread stress.
  • the contact force of the brake strip 8 on the trigger sliding surface 6 is effected, as stated, by an axial displacement of the retaining ring 30.
  • an adjusting screw 35 is provided which is fastened to an arm 33 which is at the same time a carrier of the thread take-off eye 4.
  • a retaining ring 44 is provided, which is axially displaceably mounted on an arm 49.
  • the arm 49 runs parallel to the axis of the storage drum 2, so that the retaining ring 44 can also be displaced in the axial direction.
  • a signal-excitable actuation arrangement serves to displace the retaining ring 44.
  • the actuating member consists of a pneumatic cylinder 48, shown in dash-dotted lines, which is fastened to the arm 49 and a piston rod 46, which is fastened to the ring 44.
  • a fastening ring 43 which belongs to a brake arrangement, is clipped into the retaining ring 44.
  • the brake arrangement consists of said fastening ring 43 and a foam ring 45 adjoining it in the axial direction.
  • the foam ring 45 can be compressed in the axial direction with the effect of a spring action.
  • the elastic resetting of the foam body 45 is damped.
  • the foam body 45 is provided with a ring section 40 of a brake strip 9.
  • the brake strip consists of a plastic material and is flexible, but essentially not inherently elastic.
  • the braking strip 9 lies with its braking surface flat on the braking surface 6, which is formed by the cylinder-head-shaped end section of the storage drum 2.
  • the edge 46 of the frustoconical braking strip 9 has a larger radius than the edge 47 of the frustoconical braking surface 6.
  • the edge 46 and the edge 47 lie on the same imaginary conical surface, on which also lies the edge contour of the trigger eye 41 through which the thread 5 is drawn.
  • the thread take-off eye 41 is attached to a fixed arm 42.
  • the plastic ring 45 is more or less compressed, accompanied by a modulation of the contact force of the brake strip 9 on the braking surface 6, with the effect of a modulated braking force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Braking Arrangements (AREA)
  • Springs (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Tape Measures (AREA)
  • Unwinding Of Filamentary Materials (AREA)

Abstract

The invention relates to a thread store with a substantially cylindrical drum (2) for the winding and unwinding of circumferentially laid thread turns (3) and a central thread draw-off eye (4) for the overhead withdrawal of the thread (5) and with a spring-loaded brake surface (8) supported on a withdrawal sliding surface (6) allocated to the draw-off side of the end region (2') of the drum formed by the inside of a truncated cone-shaped jacket-like brake band (9) of flexible material. To improve and especially to regularise thread withdrawal on such a device, the brake band (9) lies flat on a truncated cone-shaped withdrawal sliding surface (6) on the face of the drum. In addition, the truncated cone-shaped brake band is to be spring loaded with elastic damping by means of foam ring.

Description

Die Erfindung betrifft einen Fadenspeicher gemäß Gattungsbegriff des Anspruchs 1.The invention relates to a thread store according to the preamble of claim 1.

Ein derartiger Fadenspeicher ist aus der EP 0 534 263 bekannt. Der dort offenbarte Fadenspeicher weist eine im wesentlichen zylindrische Speichertrommel auf, auf deren Umfangsfläche Fadenwindungen abgelegt werden können. Der dort abgelegte Fadenvorrat kann über Kopf durch eine zentrale Abzugsöse abgezogen werden. Damit der Faden mit einer bestimmten Fadenspannung abgezogen werden kann, ist dort eine Fadenbremse vorgesehen. In einem kegelstumpfmantelförmigen Halteorgan ist dort ein Bremsstreifen aus einem flexiblen Material eingeklebt. Mit dessen Innenseite liegt das Halteorgan federbeaufschlagt auf einer Abzugsgleitfläche des Trommelendbereichs. Der Faden wird bei diesem Fadenspeicher zwischen der Abzugsgleitfläche und der Bremsfläche des Bremsstreifens eingeklemmt. Bei dem vorbekannten Fadenspeicher liegt die trichterförmige Bremsfläche auf einer gewölbten Abzugsgleitfläche des stirnseitigen Trommelbereiches auf. Die Berührungsflächen von Bremsfläche und Abzugsgleitfläche sind dabei minimal. Wegen der nur punktförmigen Fadenklemmung wird dort der Bremsstreifen nur linienförmig belastet. Bei einem ähnlich dem beschriebenen Ausführungsbeispiel gebauten Fadenspeicher hat dies zur Folge, daß der Faden beim Abzug dem Bremsstreifen im Laufe der Zeit eine in Umfangsrichtung verlaufende waschbrettförmige Wellenstruktur aufprägt. Mit einem derart zerstörten Bremsstreifen ist ein gleichmäßiger Fadenabzug nicht mehr möglich. Zufolge der nur frontseitigen und in koaxialer Richtung zur Trommelachse wirkenden Abfederung vollführt der Bremsring beim Fadenabzug eine Gesamtbewegung, die bei einer ergänzenden radialen Abfederung, wie es bei dem auf dem Markt befindlichen Speicher der Fall ist, zu einer Taumelbewegung ausartet.Such a thread store is known from EP 0 534 263. The thread store disclosed there has an essentially cylindrical storage drum, on the circumferential surface of which thread turns can be deposited. The thread supply stored there can be withdrawn overhead through a central draw-off eye. A thread brake is provided there so that the thread can be drawn off with a specific thread tension. A brake strip made of a flexible material is glued into a truncated cone-shaped holding member. The inside of the holding element is spring-loaded on a trigger sliding surface of the drum end region. The thread is clamped between the take-off sliding surface and the braking surface of the brake strip in this thread storage device. In the previously known thread store, the funnel-shaped braking surface rests on a curved trigger sliding surface of the front drum area. The contact surfaces between the braking surface and the trigger sliding surface are minimal. Because of the only punctiform thread clamping, the brake strip is only loaded linearly there. In the case of a thread store constructed similarly to the described embodiment, this has the consequence that the thread imprints the brake strip over the course of time on a circumferential washboard-shaped wave structure. With a brake strip destroyed in this way, it is no longer possible to pull off the thread evenly. As a result of the cushioning acting only at the front and in the coaxial direction to the drum axis, the brake ring performs an overall movement when the thread is drawn off, which occurs during a complementary radial cushioning, as is the case with the memory on the market, degenerates into a wobble movement.

Eine reine axiale Ausweichbewegung vollführt ein trichterförmiges Halteorgan gemäß der US 4 068 807, welches eine Gummischeibe besitzt, welche als Bremsorgan dient.A funnel-shaped holding element according to US Pat. No. 4,068,807, which has a rubber disc which serves as a braking element, performs a purely axial evasive movement.

Bei der US 5 409 043 ist ein trichterförmiges Halteorgan im Auflagebereich auf eine gekrümmte Trommelstirn mit einer Metallbeschichtung versehen, welche zufolge der nur axial wirkenden Kräfte punktförmig den Faden einklemmt.In US 5 409 043, a funnel-shaped holding member is provided in the support area on a curved drum face with a metal coating which, due to the only axially acting forces, pinches the thread at a point.

Aus der WO 91/14032 ist eine Vielzahl von Fadenbremsen bekannt, die im wesentlichen aktiv moduliert werden. Dort wird der Faden zumeist zum Bremsstreifen hin abgewinkelt unter letzterem hindurchgezogen. Aus der dortigen Fig. 29 sind schon plattenförmige Bremsen in Form eines flachen Kegelstumpfmantels bekannt, welche punktförmig den Faden einklemmen.A large number of thread brakes are known from WO 91/14032, which are essentially actively modulated. There the thread is mostly angled towards the brake strip and pulled under the latter. From Fig. 29 there plate-like brakes in the form of a flat truncated cone jacket are already known, which pinch the thread at a point.

Weiterhin ist aus der AT 328 993 ein Fadenspeicher bekannt, bei welchem die Stirnfläche einer Abmeßtrommel als Kegelfläche ausgebildet ist, welche mit der Stirnfläche eines Klemmtellers zusammenwirkt. Der Klemmteller ist an dem mit der Kegelfläche zusammenwirkenden Bereich mit einer Einlage aus elastischem Material versehen. Der Klemmteller ist auf einer Hülse drehbar gelagert, die in einer Muffe verschiebbar ist. Bei Änderung der Fadenspannung kann sich der Klemmteller von der Stirnfläche abheben, um dadurch ähnlich wie bei der US 4 068 807 den auf den Faden wirkenden Bremsdruck zu modulieren.Furthermore, a thread store is known from AT 328 993, in which the end face of a measuring drum is designed as a conical surface which interacts with the end face of a clamping plate. The clamping plate is provided with an insert made of elastic material in the area interacting with the conical surface. The clamping plate is rotatably mounted on a sleeve which is displaceable in a sleeve. When the thread tension changes, the clamping plate can lift off the end face, in order to modulate the brake pressure acting on the thread, similar to US Pat. No. 4,068,807.

Der Erfindung liegt daher die Aufgabe zugrunde, einen gattungsgemäßen Fadenspeicher derart weiterzubilden, daß der Fadenabzug verbessert wird.The invention is therefore based on the object of developing a generic thread store in such a way that the thread take-off is improved.

Gelöst wird diese Aufgabe durch die im Anspruch 1 angegebene Erfindung.This object is achieved by the invention specified in claim 1.

Die Unteransprüche stellen vorteilhafte Weiterbildungen der Erfindung dar.The subclaims represent advantageous developments of the invention.

Zufolge der erfindungsgemäßen Ausgestaltung ist die Berührungsfläche zwischen Bremsfläche und Abzugsgleitfläche erheblich vergrößert worden. Die Berührungsfläche hat nunmehr die Form der Oberfläche eines Kegelmantelstumpfes. Der Öffnungswinkel des trichterförmigen Bremsstreifens entspricht dabei dem Winkel der kegelstumpfförmigen Abzugsgleitfläche. Der Faden wird zwischen der flächigen Auflage des Bremsstreifens und der Abzugsgleitfläche hindurchgezogen. Bevorzugt erfolgt der Fadenabzug derart, daß er die Fadenbremse in tangentialer Richtung zur Abzugsgleitfläche verläßt. Dies wird bevorzugt dadurch erreicht, daß die Fadenabzugsöse sich im Bereich der gedachten Kegelspitze der Abzugsgleitfläche befindet. Hierdurch ist sichergestellt, daß die Auflagekraft des Bremsstreifens auf die Speichertrommel unabhängig von der Fadenspannung ist. Dies hat eine konstante Fadenspannung zur Folge. Eine bevorzugt Weiterbildung eines gattungsgemäßen Fadenspeichers zur Verminderung einer Ausweichbewegung des Halteorgans sieht eine Zwischenlage aus elastischem Material zwischen Halteorgan und Bremsstreifen vor. Zufolge dieser Ausgestaltung erfolgt die Ausweichbewegung der Fadenbremse beim Fadenabzug im wesentlichen nur vom Bremsstreifen. Der Bremsstreifen selbst kann zufolge der Zwischenlage aus elastischem Material aus hochflexiblem Material bestehen. Die Zwischenlage besteht vorzugsweise aus einem Schaumstoffkörper. Wenn die Haltefläche des Halteorgans parallel zum Bremsstreifen verläuft, hat die Zwischenlage einen im wesentlichen rechteckigen Querschnitt. Die radiale Breitenerstreckung des Schaumstoffkörpers kann dabei etwas geringer sein als die radiale Breitenerstreckung des Bremsstreifens. Die Stärke der Zwischenlage ist bevorzugt kleiner als die Breite des Bremsstreifens, aber größer als die größtmöglich speicherbare Fadenstärke. Die elastische Zwischenlage zwischen Halteorgan und Bremsstreifen hat den Vorteil, daß der Bremsstreifen beim Fadenabzug lokal in Richtung auf das Halteorgan ausweichen kann. Die Ausweichbewegung kann somit in Richtung der Flächennormalen des Bremsstreifens erfolgen. In der EP 0 330 951 ist schon eine Ausweichbewegung von Fadenbremselementen normal zu einer Bremsfläche bzw. Bremsgegenfläche in Vorschlag gebracht worden. Die Bremselemente werden dort von Lamellen gebildet. Eine kontinuierliche, durchgängig glatte Bremsfläche ist demgegenüber von Vorteil. Zur genauen Einstellung der Abstützkraft des Bremsstreifens auf dem Trommelrand ist vorgesehen, daß das Halteorgan in axialer Richtung abgefedert ist. Der Bremsstreifen ist bevorzugt von einem dünnen, innen glatten Metallstreifen ausgebildet, dessen Dicke vorzugsweise kleiner als 0,1 mm ist. Da der Bremsstreifen bevorzugt selbst nicht zur Formstabilität der Bremsanordnung beizutragen braucht, kann er hochflexibel, bevorzugt aus einer sehr dünnen Metallfolie, ausgebildet sein. Zur Einstellung der Auflagekraft des Bremsringes auf dem Trommelendbereich ist die axiale Abfederung des Halteorgans einstellbar. Der Federweg der Zwischenlage ist bevorzugt kleiner als ein Zwanzigstel, bevorzugt etwa ein Fünfzigstel des Speichertrommelumfanges. Die Abzugsgleitfläche, die dem Trommelendbereich zugeordnet ist, bildet auch hier einen Flächenabschnitt eines Kegels aus. Dieser Flächenabschnitt kann in seiner Radialerstreckung kleiner oder größer sein als die Breite der Bremsfläche. Der Fadenspeicher hat bevorzugt eine stillstehende Trommel, auf welcher mittels eines motorgetriebenen Aufwickelarmes die Fadenwindungen abgelegt werden. Weiter sind aus dem Trommelinneren durch die Trommeloberfläche hindurchragende Mittel vorgesehen, welche die Fadenwindungen von der Aufwickelseite der Trommel zur Abzugsseite verlagern, so daß die einzelnen Fadenwindungen mit Abstand zueinander auf der Trommeloberfläche aufliegen. Die maximale speicherbare Fadenstärke ist um sehr viel kleiner als die Breite der Abzugsgleitfläche bzw. die Breite des Bremsstreifens. Zusammen mit der hohen Flexibilität des Bremsstreifens und dessen flächiger Abfederung gegenüber dem Halteorgan kann daher eine lokale Ausweichung (Ausbiegung) des Bremsstreifens in Richtung seiner Flächennormalen erreicht werden. Der Flächenabschnitt des Bremsstreifens, der nicht wegen der Fadenzwischenlage ausweicht, bleibt im wesentlichen in Ruhe, ebenso das Halteorgan.As a result of the configuration according to the invention, the contact surface between the braking surface and the trigger sliding surface has been considerably enlarged. The contact surface now has the shape of the surface of a truncated cone. The opening angle of the funnel-shaped brake strip corresponds to the angle of the truncated cone-shaped trigger sliding surface. The thread is pulled between the flat support of the brake strip and the trigger sliding surface. The thread is preferably drawn off in such a way that it leaves the thread brake in the tangential direction to the take-off sliding surface. This is preferably achieved in that the thread take-off eye is located in the region of the imaginary cone tip of the take-off sliding surface. This ensures that the contact force of the brake strip on the storage drum is independent of the thread tension. This results in a constant thread tension. A preferred further development of a thread store of the generic type to reduce an evasive movement of the holding member provides an intermediate layer of elastic material between the holding member and the brake strip. As a result of this configuration, the evasive movement of the thread brake takes place essentially only from the brake strip when the thread is drawn off. The brake strip itself can consist of highly flexible material due to the intermediate layer of elastic material. The intermediate layer preferably consists of a foam body. If the holding surface of the holding member runs parallel to the brake strip, the intermediate layer has a substantially rectangular cross section. The radial latitude the foam body can be slightly less than the radial width of the brake strip. The thickness of the intermediate layer is preferably smaller than the width of the brake strip, but larger than the maximum thread thickness that can be stored. The elastic intermediate layer between the holding member and the brake strip has the advantage that the brake strip can dodge locally in the direction of the holding member when the thread is drawn off. The evasive movement can thus take place in the direction of the surface normal of the brake strip. In EP 0 330 951, an evasive movement of thread brake elements to a braking surface or counter-braking surface has already been proposed. The braking elements are formed by plates. In contrast, a continuous, consistently smooth braking surface is an advantage. For precise adjustment of the support force of the brake strip on the drum edge, it is provided that the holding member is cushioned in the axial direction. The brake strip is preferably formed from a thin, internally smooth metal strip, the thickness of which is preferably less than 0.1 mm. Since the brake strip preferably does not itself have to contribute to the dimensional stability of the brake arrangement, it can be designed to be highly flexible, preferably from a very thin metal foil. The axial cushioning of the holding member can be adjusted to adjust the contact force of the brake ring on the drum end area. The spring travel of the intermediate layer is preferably less than a twentieth, preferably about a fiftieth, of the circumference of the storage drum. The trigger sliding surface, which is assigned to the drum end region, also forms a surface section of a cone here. This surface section can be smaller or larger in its radial extent than the width of the braking surface. The thread store preferably has a stationary drum, on which by means of a motor-driven Winding arm the thread turns are deposited. Furthermore, means protruding from the inside of the drum through the drum surface, which shift the thread turns from the winding side of the drum to the take-off side, so that the individual thread turns rest on the drum surface at a distance from one another. The maximum storable thread thickness is much smaller than the width of the trigger slide surface or the width of the brake strip. Together with the high flexibility of the brake strip and its flat cushioning relative to the holding member, a local deflection (deflection) of the brake strip in the direction of its surface normal can therefore be achieved. The surface section of the brake strip, which does not deviate because of the thread intermediate layer, remains essentially at rest, as does the holding member.

Eine Version der Erfindung sieht vor, daß auf dem kegelstumpfförmigen Endbereich der Trommel eine kegelstumpfförmige Bremsfläche flächig aufliegt, welche von einem die Speichertrommel trommelendseitig umfassenden Ringabschnitt getragen wird. Der kegelstumpfförmige Bremsstreifen ragt bei dieser Version frei in den Ringzwischenraum ein. Bevorzugt wirkt auf den Tragring ein ringförmiges Federelement. Das ringförmige Federelement hat bevorzugt eine innere Dämpfung. Als Material hat sich ein elastischer Schaumstoff als vorteilhaft erwiesen. Mit diesem Federelement ist der Tragring an einen Befestigungsring befestigt. Die aus Schaumstoffkörper und Bremsstreifen nebst Ringabschnitt und Befestigungsring bestehende Bremsanordnung ist mit dem Befestigungsring in einen Haltering eingeklippst. Der Haltering ist an einem Arm des Speichertrommelgehäuses befestigt und zusammen mit dem Haltering in Achsrichtung verlagerbar. Die Verlagerbarkeit in Achsrichtung erfolgt bevorzugt durch eine Kolbenzylindereinheit, welche pneumatisch angetrieben wird. Gegebenenfalls kann als Rückstellkraft eine Feder dienen. Es ist auch denkbar, zur axialen Verlagerung des Halteringes einen Elektromagneten zu verwenden. Die axiale Verlagerung des Halteringes geht einher mit einer Änderung der Vorspannung, mit welcher der Bremsstreifen auf der Bremsfläche aufliegt. Die Variation der Vorspannung erfolgt bevorzugt im Takt des Schußfadeneintrages einer Webmaschine oder dergleichen. Durch diese Taktung kann die Bremswirkung während eines Fadenabzuges aktiv moduliert werden. So ist bspw. vorgesehen, daß zu Anfang des Schußfadeneintrages mit einer geringen Fadenbremsung abgezogen wird und bei Beendigung des Schußfadeneintrages die Bremsung durch Komprimierung des Schaumstoffringes erhöht wird. Die Dämpfung des Federelementes (Schaumstoffringes) hat den Vorteil, daß selbst bei hohen Taktraten keine Resonanzfrequenzen in der Bremsanordnung angeregt werden, welche zu einem unsauberen Fadenabzug führen kann.A version of the invention provides that a truncated cone-shaped braking surface rests flat on the frustoconical end region of the drum, which is supported by a ring section encompassing the storage drum at the drum end. In this version, the frustoconical brake strip protrudes freely into the gap between the rings. An annular spring element preferably acts on the support ring. The annular spring element preferably has an internal damping. An elastic foam has proven to be advantageous as the material. With this spring element, the support ring is attached to a mounting ring. The brake assembly consisting of foam body and brake strip together with ring section and fastening ring is clipped into a holding ring with the fastening ring. The retaining ring is fastened to an arm of the storage drum housing and can be displaced in the axial direction together with the retaining ring. The displaceability in the axial direction is preferably carried out by a Piston cylinder unit, which is driven pneumatically. If necessary, a spring can serve as the restoring force. It is also conceivable to use an electromagnet for the axial displacement of the retaining ring. The axial displacement of the retaining ring is accompanied by a change in the preload with which the brake strip rests on the braking surface. The variation of the pretension is preferably carried out in time with the weft insertion of a weaving machine or the like. With this timing, the braking effect can be actively modulated during thread take-off. For example, it is provided that at the beginning of the weft insertion with a slight thread braking, the braking is increased by compressing the foam ring at the end of the weft insertion. The damping of the spring element (foam ring) has the advantage that, even at high clock rates, no resonance frequencies are excited in the brake arrangement, which can lead to a dirty thread take-off.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand beigefügter Zeichnungen beschrieben. Es zeigen

Figur 1
eine Gesamtansicht eines Fadenspeichers,
Figur 2
die Draufsicht auf einen Fadenspeicher,
Figur 3
den Schnitt entsprechend der Linie III-III in Figur 2 durch den Kopfbereich des Fadenspeichers,
Figur 4
eine Darstellung gemäß Figur 3 beim Abzug eines Fadens,
Figur 5
ein zweites Ausführungsbeispiel der Erfindung mit teilweise weggebrochenem Fadenbremsring,
Figur 6
eine Draufsicht auf das Ausführungsbeispiel gemäß Figur 5,
Figur 7
eine vergrößerte Darstellung des Kopfbereiches des Fadenspeichers gemäß Figur 5,
Figur 8
ein weiteres Ausführungsbeispiel der Erfindung, teils geschnitten teils in Ansicht,
Figur 9
eine Draufsicht auf das Ausführungsbeispiel gemäß Figur 8 und
Figur 10
eine vergrößerte Darstellung der Darstellung gemäß Figur 8.
Embodiments of the invention are described below with reference to the accompanying drawings. Show it
Figure 1
an overall view of a thread store,
Figure 2
the top view of a thread store,
Figure 3
2 shows the section along the line III-III in FIG. 2 through the head region of the thread store,
Figure 4
3 is a representation of the withdrawal of a thread,
Figure 5
a second embodiment of the invention with a partially broken thread brake ring,
Figure 6
3 shows a plan view of the exemplary embodiment according to FIG. 5,
Figure 7
5 shows an enlarged illustration of the head region of the thread store according to FIG. 5,
Figure 8
another embodiment of the invention, partly cut partly in view,
Figure 9
a plan view of the embodiment of Figure 8 and
Figure 10
8 shows an enlarged representation of the representation according to FIG. 8.

Der Fadenspeicher 1 weist ein Motorgehäuse 22 auf, das an seinem unteren Ende eine Fadeneinführöffnung 23 aufweist, die in eine Hohlwelle des Motors führt. Das Motorgehäuse 22 ist an einem Träger 25 befestigt. Vom Motor wird ein um die Speichertrommel 2 rotierender Fadenablegearm 24 angetrieben, welcher Fadenwindungen 3 auf der Oberfläche der Speichertrommel 2 ablegt. In der Speichertrommel 2 sind Fenster 27 vorgesehen, durch welche in bekannter Weise Organe hindurchgreifen zur Förderung der Fadenwindungen 3 in Abzugsrichtung. Der Faden 5 wird über Kopf von der Speichertrommel 2 abgezogen, und zwar durch eine Fadenabzugsöse 4, welche axial zur Speichertrommel 2 angeordnet ist.The thread store 1 has a motor housing 22 which has a thread insertion opening 23 at its lower end, which leads into a hollow shaft of the motor. The motor housing 22 is fastened to a carrier 25. A thread depositing arm 24 rotating around the storage drum 2 is driven by the motor and deposits thread turns 3 on the surface of the storage drum 2. Windows 27 are provided in the storage drum 2, through which organs reach in a known manner to promote the thread turns 3 in the take-off direction. The thread 5 is withdrawn overhead from the storage drum 2, namely through a thread withdrawal eye 4 which is arranged axially to the storage drum 2.

An ihrem abzugseitigen Trommelendbereich 2' bildet die Speichertrommel 2 eine Abzugsgleitfläche 6 aus. Die Abzugsgleitfläche 6 wird von einem Kegelstumpf ausgebildet, durch welche die zylindrische Oberfläche der Speichertrommel 2 in die Stirnfläche der Speichertrommel 2 übergeht. Diese Abzugsgleitfläche 6 bildet somit einen Flächenabschnitt eines Kegels aus. Die Breite der Kegelfläche beträgt bevorzugt etwa 1 cm.The storage drum 2 forms a trigger sliding surface 6 at its trigger end region 2 ′. The trigger sliding surface 6 is formed by a truncated cone, through which the cylindrical surface of the storage drum 2 merges into the end face of the storage drum 2. This trigger sliding surface 6 thus forms a surface section of a cone. The width of the conical surface is preferably about 1 cm.

Auf dieser Abzugsgleitfläche 6 gleitet in umlaufender Weise beim Fadenabzug der Faden 5. Um eine gleichmäßige Fadenspannung beim Abzug des Fadens 5 über die Abzugsgleitfläche 6 zu erhalten, ist eine Bremsfläche 8 vorgesehen, welche sich federbelastet auf der Abzugsgleitfläche 6 abstützt. Der Faden wird somit zwischen zwei federbeaufschlagten Flächen hindurchgezogen, nämlich einerseits der Abzugsgleitfläche 6 und andererseits der Bremsfläche 8. Die Flächen 6 und 8 liegen flächig aufeinander.The thread 5 slides in a circumferential manner on this take-off sliding surface 6 when the thread is drawn off. In order to obtain a uniform thread tension when the thread 5 is drawn off via the take-off sliding surface 6, a braking surface 8 is provided which is supported on the pull-off sliding surface 6 in a spring-loaded manner. The thread is thus drawn between two spring-loaded surfaces, namely on the one hand the trigger sliding surface 6 and on the other hand the braking surface 8. The surfaces 6 and 8 lie flat on one another.

Die Bremsfläche 8 wird von der Innenfläche eines Bremsstreifens 9 ausgebildet. Der Bremsstreifen 9 besteht aus einem etwa 0,1 mm starken oder dünneren Blech, welches zu einem Kegelstumpfmantel gebogen ist. Die Nahtstelle des Blechstreifens verläuft dabei schräg zur Radialen, so daß eine regelmäßige, kontinuierliche Fadenabzugsspannung erreicht wird. Es ist aber auch vorgesehen, daß der Bremsstreifen aus einem einzigen Stück beispielsweise gepreßt oder tiefgezogen werden kann. Der Bremsstreifen 9 ist hochflexibel. Er läßt sich mit geringen Kraftbeaufschlagungen biegeverformen.The braking surface 8 is formed by the inner surface of a braking strip 9. The brake strip 9 consists of an approximately 0.1 mm thick or thinner sheet which is bent to form a truncated cone. The seam of the sheet metal strip runs obliquely to the radial, so that a regular, continuous thread pull tension is achieved. However, it is also provided that the brake strip can, for example, be pressed or deep-drawn from a single piece. The brake strip 9 is highly flexible. It can be deformed with little force.

Der Bremsstreifen 9 ist mittels eines Schaumstoffkörpers 12, welcher ebenfalls eine Kegelstumpfmantelform aufweist, an einer Haltefläche 11 des Halteorgans 10 befestigt. Dazu ist der Schaumstoffkörper 12 an der der Bremsfläche 8 gegenüberliegenden Außenfläche 9' des Bremsstreifens angeklebt. Der Schaumstoffkörper 12 bildet somit eine elastische Zwischenlage zwischen Halteorgan 10 und Bremsstreifen 9 aus. Der Querschnitt des Schaumstoffkörpers 12 ist rechteckig und die Haltefläche 11 ebenfalls konisch ausgebildet und parallel zum Bremsstreifen 9 angeordnet.The brake strip 9 is fastened to a holding surface 11 of the holding element 10 by means of a foam body 12, which also has the shape of a truncated cone. For this purpose, the foam body 12 is glued to the outer surface 9 'of the brake strip opposite the braking surface 8. The foam body 12 forms thus an elastic intermediate layer between the holding member 10 and the brake strip 9. The cross section of the foam body 12 is rectangular and the holding surface 11 is also conical and arranged parallel to the brake strip 9.

Der Schaumstoffkörper 12 läßt sich durch Beaufschlagung nahezu um seine gesamte Stärke komprimieren. Die Stärke des Schaumstoffkörpers 12 ist kleiner als die Breite des Bremsstreifens 9, aber größer als die größtmöglich speicherbare Fadenstärke, so daß der Federweg für eine lokale Ausweichbewegung des Bremsstreifens beim Fadendurchzug ausreicht. Wie insbesondere aus Figur 4 ersichtlich ist, kann bei einem Fadenabzug lediglich der Bereich des Bremsstreifens 9 ausweichen, unter welchem unmittelbar der Faden 5 abgezogen wird, und zwar in Richtung der Flächennormalen. Die übrigen Bereiche der Bremsfläche 8 bleiben auf der Abzugsgleitfläche 6 liegen. Hierfür förderlich ist insbesondere das Größenverhältnis von Dicke der Zwischenlage und Speichertrommelumfang. Der Federweg der Zwischenlage ist kleiner als ein Zwanzigstel des Speichertrommelumfanges, und im Ausführungsbeispiel beträgt er etwa ein Fünfzigstel. Die Fadenstärken sind überwiegend noch viel kleiner (mindestens eine Größenordnung) als die Zwischenlagenstärke.The foam body 12 can be compressed almost by its entire thickness by being acted upon. The thickness of the foam body 12 is smaller than the width of the brake strip 9, but larger than the largest possible storeable thread thickness, so that the spring travel is sufficient for a local evasive movement of the brake strip when the thread is pulled through. As can be seen in particular from FIG. 4, in the case of a thread draw-off, only the area of the brake strip 9, under which the thread 5 is pulled off, can deviate, specifically in the direction of the surface normal. The remaining areas of the braking surface 8 remain on the trigger sliding surface 6. The size ratio of the thickness of the intermediate layer and the storage drum circumference is particularly conducive to this. The spring travel of the intermediate layer is less than one twentieth of the circumference of the storage drum, and in the exemplary embodiment it is approximately one fiftieth. The thread thicknesses are predominantly much smaller (at least one order of magnitude) than the intermediate layer thickness.

Der Schaumstoffkörper 12 hat eine radiale Erstreckung von etwa 12 mm. Die radiale Erstreckung des Bremsstreifens 9 beträgt etwa 15 mm, so daß nahezu die gesamte Außenfläche des Bremsstreifens 9 auf dem Schaumstoffkörper 12 aufgeklebt ist. Mit seiner anderen Seite ist der Schaumstoffkörper 12 auf der Haltefläche 11 des Halteorgans aufgeklebt. Die Haltefläche 11 wird von einem Teilabschnitt 10' des Halteorgans ausgebildet, welcher ebenfalls eine Kegelstumpfmantelform aufweist. Einem sich axial in Abzugsrichtung erstreckenden, sich an den Teilabschnitt 10' anschließenden zylindrischen Bund sind Stege 21 angeformt, welche zwischen sich Fenster 16 freilassen. Die Stege 21 erstrecken sich radial einwärts und axial abzugsseitig und münden in eine Halterung für eine Fadenabzugsbüchse 14, welche zentral angeordnet ist.The foam body 12 has a radial extension of approximately 12 mm. The radial extent of the brake strip 9 is approximately 15 mm, so that almost the entire outer surface of the brake strip 9 is glued to the foam body 12. The other side of the foam body 12 is glued to the holding surface 11 of the holding member. The holding surface 11 is formed by a section 10 'of the holding member, which also has a truncated cone shape. One yourself Webs 21, which leave windows 16 open between them, are integrally formed in the withdrawal direction and adjoining the section 10 '. The webs 21 extend radially inwards and axially on the take-off side and open into a holder for a thread take-off bushing 14, which is arranged centrally.

Die Fadenabzugsbüchse 14 hat einen Abzugsösencharakter und ragt in eine trichterförmige Öffnung 17 eines Befestigungsteiles 15, mit welchem das Halteorgan 10 an einem gehäusefesten Träger 20 befestigt ist. Der Träger 20 ist gegenüber dem Träger 25 allerdings zusätzlich noch in axialer Richtung verstellbar. Beim Abzug wird der Faden 5 über die Stirnkante der Fadenabzugsbüchse 14 gezogen. Die axiale Lage der Stirnkante der Fadenabzugsbüchse 14, welche nach Innen abgerundet ist, bestimmt den Winkel, mit welchem der Faden über die Fadenabzugsfläche 6 gezogen wird. Damit der Faden 5 die Abzugsgleitfläche 6 tangential verläßt, liegt die Stirnkante der Fadenabzugsbüchse 14 auf der gedachten Verlängerung des Kegels, welcher die Abzugsgleitfläche 6 ausbildet.The thread take-off bushing 14 has a pull-off eye character and protrudes into a funnel-shaped opening 17 of a fastening part 15, with which the holding member 10 is fastened to a carrier 20 fixed to the housing. The carrier 20 is, however, additionally adjustable in the axial direction compared to the carrier 25. When pulling the thread 5 is pulled over the front edge of the thread take-off sleeve 14. The axial position of the end edge of the thread take-off sleeve 14, which is rounded inward, determines the angle at which the thread is pulled over the thread take-off surface 6. So that the thread 5 leaves the take-off sliding surface 6 tangentially, the end edge of the thread take-off sleeve 14 lies on the imaginary extension of the cone which forms the take-off sliding surface 6.

Zwischen dem Befestigungsteil 15 und dem die Haltefläche 11 aufweisenden, beweglichen Abschnitt des Halteorgans 10 sind insgesamt acht axial zur Trommelachse ausgerichtete Druckfedern 13 vorgesehen, welche umfänglich um die zylindrische Fadenabzugsbüchse 14 angeordnet sind. Durch die axiale Verstellung des Trägers 20 können diese Federn mehr oder weniger gespannt werden, wodurch die Auflagekraft der Bremsfläche 8 auf der Abzugsgleitfläche 6 eingestellt werden kann. Hierzu wird der Befestigungsteil 15 in Richtung x verlagert. Der Befestigungsteil 15 weist einen die trichterförmige Öffnung umgebenden Außengewindeabschnitt 18 auf, der über eine Mutter 19 mit dem Träger 20 verschraubt werden kann.Between the fastening part 15 and the movable section of the holding member 10 which has the holding surface 11, a total of eight compression springs 13 are provided which are aligned axially to the drum axis and which are arranged circumferentially around the cylindrical thread take-off sleeve 14. By axially adjusting the carrier 20, these springs can be more or less tensioned, as a result of which the contact force of the braking surface 8 on the trigger sliding surface 6 can be adjusted. For this purpose, the fastening part 15 is shifted in the direction x. The fastening part 15 has an external thread section 18 which surrounds the funnel-shaped opening and which can be screwed to the carrier 20 via a nut 19.

Wie aus Figur 4 ersichtlich ist, kann der Teilbereich 26 des Bremsstreifens 9, welcher zwischen sich und der Abzugsgleitfläche 6 den Faden 5 aufnimmt, eine Ausformung 26 ausbilden. In Figur 4 ist der Faden bezüglich seiner Stärke stark vergrößert dargestellt. Diese Ausformung 26 vollführt beim Fadenabzug zusammen mit dem Faden 5 eine kreisförmige Umlaufbewegung um die Achse des Fadenspeichers, während der übrige Bereich des Bremsstreifens 9 in Ruhe auf der Abzugsgleitfläche 6 in flächiger Anlage liegenbleibt. Der Schaumstoffkörper 12 wird dabei an den entsprechenden Stellen komprimiert. Die Ausweichbewegung des Bremsstreifens 9 erfolgt dabei in Richtung seiner Flächennormalen, nämlich in Richtung auf die parallel verlaufende Haltefläche 11. Es wird als vorteilhaft angesehen, daß bei dieser Ausgestaltung das Halteorgan 10 beim Fadenabzug im wesentlichen nicht bewegt wird. Es erfolgt lediglich eine lokale Ausweichbewegung eines Teilbereichs unter Bildung einer Ausformung 26 des Bremsstreifens 9, und zwar nur um den Betrag des Fadendurchmessers. Während die Stützfunktion der Bremsfläche 8 vom nahezu unbeweglichen Halteorgan 10 übernommen wird, wird die Ausweichfähigkeit der Bremsfläche 8 durch die hohe Flexibilität des Bremsstreifens 9 und die im wesentlichen ganzflächige Abstützung durch das Federelement 12 erreicht. Der Winkel, mit dem die Kegelstumpfmantel-Innenfläche des Bremsstreifens gegen die Kegelachse, die identisch ist mit der Trommelachse, geneigt ist, beträgt etwa 60°. Der Winkel, mit dem die Kegelstumpfmantel-Außenfläche der Speichertrommel, also die Abzugsgleitfläche 6 geneigt ist entspricht dem vorgenannten Neigungswinkel.As can be seen from FIG. 4, the partial region 26 of the brake strip 9, which receives the thread 5 between itself and the take-off sliding surface 6, can form a formation 26. In Figure 4, the thread is shown greatly enlarged in strength. This formation 26 carries out a circular orbital movement around the axis of the thread storage device when the thread is drawn off, while the remaining area of the brake strip 9 remains at rest on the take-off sliding surface 6 in flat contact. The foam body 12 is compressed at the corresponding points. The evasive movement of the brake strip 9 takes place in the direction of its surface normal, namely in the direction of the parallel holding surface 11. It is considered advantageous that in this embodiment the holding member 10 is essentially not moved when the thread is drawn off. There is only a local evasive movement of a partial area, forming a formation 26 of the brake strip 9, and only by the amount of the thread diameter. While the support function of the braking surface 8 is taken over by the almost immobile holding member 10, the ability of the braking surface 8 to evade is achieved by the high flexibility of the braking strip 9 and the essentially full-surface support by the spring element 12. The angle at which the inner surface of the truncated cone of the brake strip is inclined towards the cone axis, which is identical to the drum axis, is approximately 60 °. The angle at which the frustoconical outer surface of the storage drum, that is to say the trigger sliding surface 6, is inclined corresponds to the aforementioned inclination angle.

Beim Ausführungsbeispiel gemäß den Figuren 5 bis 7 ist das Halteorgan 10 trichterförmig ausgebildet. Der Trichter öffnet sich in Richtung des Fadenzulaufes. Das Halteorgan 10 ist gegenüber einem feststehenden, aber in Richtung x verlagerbaren Ring 30 abgefedert. Hierzu sind spiralförmig angeordnete Federlamellen 31 vorgesehen, welche zwischen einer Trichterhalseinfassung 32 und dem Ringkörper 30 angeordnet sind. Durch Verlagerung des Ringkörpers 30 in Richtung x kann die Spannung, mit welcher das Halteorgan 10 gegenüber der Trommelstirnseite abgefedert ist eingestellt werden. Innenwandig des Halteorganes 10 befindet sich die Haltefläche 11, an welcher ein ringförmiger Kunststoffkörper 12 angeklebt ist. Parallel zu der Haltefläche 11, aber mit Abstand dazu ist auf den Schaumstoffkörper 12 der Bremsstreifen 9 aufgeklebt. Der Bremsstreifen 9 weist eine trichterförmige Gestalt auf und bildet mit seiner Innenfläche die Bremsfläche 8 aus. Die Bremsfläche 8 liegt flächig auf einem kegelstumpfförmigen Flächenabschnitt der Speichertrommel 2 auf. Dieser kegelstumpfförmige Flächenabschnitt bildet die Abzugsgleitfläche 6 aus. Der Faden wird zwischen Abzugsgleitfläche 6 und Bremsfläche 8 hindurchgezogen. Beide Flächen bestehen aus Metall und sind im wesentlichen glatt. Eine Bremswirkung wird dadurch erzielt, daß der Bremsstreifen 8 zufolge der federnden Beaufschlagung durch die Federelemente 31 auf die Abzugsgleitfläche 6 aufgepreßt wird. Beim Durchzug des Fadens 5 durch diese Fadenbremse erfolgt eine Ausweichbewegung durch eine geringfügige Kompression des Kunststoffteiles 12.In the embodiment shown in Figures 5 to 7, the holding member 10 is funnel-shaped. The funnel opens in the direction of the thread feed. The holding organ 10 is cushioned relative to a fixed ring 30 which can be displaced in the direction x. For this purpose, spirally arranged spring lamellae 31 are provided, which are arranged between a funnel neck surround 32 and the ring body 30. By displacing the ring body 30 in the direction x, the tension with which the holding member 10 is cushioned relative to the drum end face can be set. The holding surface 11, to which an annular plastic body 12 is glued, is located on the inside of the holding member 10. Parallel to the holding surface 11, but at a distance from it, the brake strip 9 is glued to the foam body 12. The brake strip 9 has a funnel-shaped shape and forms the braking surface 8 with its inner surface. The braking surface 8 lies flat on a frustoconical surface section of the storage drum 2. This frustoconical surface section forms the trigger sliding surface 6. The thread is pulled between the trigger sliding surface 6 and the braking surface 8. Both surfaces are made of metal and are essentially smooth. A braking effect is achieved in that the brake strip 8 is pressed onto the trigger sliding surface 6 due to the resilient action by the spring elements 31. When the thread 5 is pulled through this thread brake, there is an evasive movement due to a slight compression of the plastic part 12.

Die Fadenabzugsöse 4 ist koaxial zur Achse der Speichertrommel 2 angeordnet. Der axiale Abstand der Fadenabzugsöse 4 von der Stirnseite der Speichertrommel 2 ist so gewählt, daß der Faden 5 die Abzugsgleitfläche 6 parallel zur Flächentangente verläßt. Der Faden verläuft demzufolge immer auf der gedachten Verlängerung der Kegelfläche der Abzugsgleitfläche 6.The thread take-off eye 4 is arranged coaxially to the axis of the storage drum 2. The axial distance of the thread take-off eye 4 from the end face of the storage drum 2 is chosen so that the thread 5 leaves the take-off sliding surface 6 parallel to the surface tangent. The thread therefore always runs on the imaginary extension of the conical surface of the trigger sliding surface 6.

Wie insbesondere der Figur 7 zu entnehmen ist, überragt der Bremsstreifen 8 mit einem äußeren Randbereich 8' die Umfangskontur der zylindrischen Speichertrommel 2. Der zylindrische Abschnitt der Speichertrommel 2 geht über eine Rundung in die kegelstumpfförmige Abzugsgleitfläche 6 über. Zufolge des Überstandes 9' bildet sich ein ringförmiger Zwickel aus, in welchen der Faden 5 in die Fadenbremse einläuft. Der Faden läuft somit nicht gegen eine Kante, was eine geringere Fadenbeanspruchung zur Folge hat.As can be seen in particular from FIG. 7, the brake strip 8 projects beyond the circumferential contour of the cylindrical storage drum 2 with an outer edge region 8 ′. The cylindrical section of the storage drum 2 merges into the frustoconical trigger sliding surface 6. As a result of the protrusion 9 ', an annular gusset is formed, in which the thread 5 runs into the thread brake. The thread therefore does not run against an edge, which results in less thread stress.

Die Auflagekraft des Bremsstreifens 8 auf der Abzugsgleitfläche 6 wird wie gesagt durch eine axiale Verlagerung des Halteringes 30 bewirkt. Hierzu ist eine Einstellschraube 35 vorgesehen, welche an einem Arm 33 befestigt ist, welcher gleichzeitig Träger der Fadenabzugsöse 4 ist.The contact force of the brake strip 8 on the trigger sliding surface 6 is effected, as stated, by an axial displacement of the retaining ring 30. For this purpose, an adjusting screw 35 is provided which is fastened to an arm 33 which is at the same time a carrier of the thread take-off eye 4.

Bei dem Ausführungsbeispiel gemäß den Figuren 8 bis 10 ist ein Haltering 44 vorgesehen, welcher axial verschieblich an einem Arm 49 gelagert ist. Der Arm 49 verläuft parallel zur Achse der Speichertrommel 2, so daß der Haltering 44 ebenfalls in Achsrichtung verlagerbar ist. Zur Verlagerung des Halteringes 44 dient eine Signal-erregbare Betätigungsanordnung. Bei Beaufschlagung der Betätigungsanordnung mit einem elektrischen Signal erfolgt eine axiale Verlagerung des Halteringes 44. Im Ausführungsbeispiel besteht das Betätigungsorgan aus einem strichpunktiert dargestellten Pneumatikzylinder 48, welcher am Arm 49 befestigt ist und einer Kolbenstange 46, welche am Ring 44 befestigt ist. Durch Beaufschlagung der Betätigungseinrichtung mit Preßluft wird der Haltering 44 axial zur Speichertrommel verlagert. Es ist vorgesehen, daß die Rückverlagerung mittels einer Rückdrückfeder erfolgt. Es ist auch denkbar, daß als Betätigungseinrichtung elektromagnetische Vorrichtungen oder dergleichen Verwendung finden.In the exemplary embodiment according to FIGS. 8 to 10, a retaining ring 44 is provided, which is axially displaceably mounted on an arm 49. The arm 49 runs parallel to the axis of the storage drum 2, so that the retaining ring 44 can also be displaced in the axial direction. A signal-excitable actuation arrangement serves to displace the retaining ring 44. When an electrical signal is applied to the actuating arrangement, the retaining ring 44 is axially displaced. In the exemplary embodiment, the actuating member consists of a pneumatic cylinder 48, shown in dash-dotted lines, which is fastened to the arm 49 and a piston rod 46, which is fastened to the ring 44. By applying compressed air to the actuator, the retaining ring 44 is axially displaced to the storage drum. It is envisaged that the relocation takes place by means of a return spring. It is also conceivable that as an actuator find electromagnetic devices or the like.

In den Haltering 44 ist ein Befestigungsring 43 eingeklippst, welcher zu einer Bremsanordnung zugehörig ist. Die Bremsanordnung besteht aus besagtem Befestigungsring 43 und einem sich in Achsrichtung daran anschließenden Schaumstoffring 45. Der Schaumstoffring 45 ist in Achsrichtung komprimierbar unter Ausübung einer Federwirkung. Die elastische Rückstellung des Schaumstoffkörpers 45 erfolgt gedämpft. Anderendseitig ist der Schaumstoffkörper 45 mit einem Ringabschnitt 40 eines Bremsstreifens 9 versehen. Der Bremsstreifen besteht aus einem Kunststoffmaterial und ist biegeflexibel, aber im wesentlichen nicht in sich elastisch. Der Bremsstreifen 9 liegt mit seiner Bremsfläche flächig auf der Bremsfläche 6 auf, welche von zylinderkopfförmigen Endabschnitt der Speichertrommel 2 gebildet wird.A fastening ring 43, which belongs to a brake arrangement, is clipped into the retaining ring 44. The brake arrangement consists of said fastening ring 43 and a foam ring 45 adjoining it in the axial direction. The foam ring 45 can be compressed in the axial direction with the effect of a spring action. The elastic resetting of the foam body 45 is damped. On the other side, the foam body 45 is provided with a ring section 40 of a brake strip 9. The brake strip consists of a plastic material and is flexible, but essentially not inherently elastic. The braking strip 9 lies with its braking surface flat on the braking surface 6, which is formed by the cylinder-head-shaped end section of the storage drum 2.

Zwischen dem von dem Ringabschnitt 40 gebildeten Tragring des Bremsstreifens 9 und dem Übergangsbereich, in welchem die zylinderförmige Mantelfläche der Trommel 2 in den kegelstumpfförmigen Flächenabschnitt übergeht, befindet sich ein Spalt. Dieser Spalt wird durch den Bremsstreifen 9 überbrückt, bevor letzterer in Auflage tritt auf die Bremsfläche 6. Die Randkante 46 des kegelstumpfförmigen Bremsstreifens 9 besitzt einen größeren Radius, als die Randkante 47 der kegelstumpfförmigen Bremsfläche 6. Die Randkante 46 und die Randkante 47 liegen auf derselben gedachten Kegelmantelfläche, auf welcher auch die Randkontur der Abzugsöse 41 liegt, durch welche der Faden 5 gezogen wird. Die Fadenabzugsöse 41 ist an einem ortsfesten Arm 42 befestigt.There is a gap between the support ring of the brake strip 9 formed by the ring section 40 and the transition area in which the cylindrical outer surface of the drum 2 merges into the frustoconical surface section. This gap is bridged by the brake strip 9 before the latter comes into contact with the braking surface 6. The edge 46 of the frustoconical braking strip 9 has a larger radius than the edge 47 of the frustoconical braking surface 6. The edge 46 and the edge 47 lie on the same imaginary conical surface, on which also lies the edge contour of the trigger eye 41 through which the thread 5 is drawn. The thread take-off eye 41 is attached to a fixed arm 42.

Durch eine Verlagerung des Halteringes 44 in Achsrichtung wird der Kunststoffring 45 mehr oder weniger komprimiert, einhergehend mit einer Modulation der Auflagekraft des Bremsstreifens 9 auf der Bremsfläche 6, mit der Wirkung einer modulierten Bremskraft.By displacing the holding ring 44 in the axial direction, the plastic ring 45 is more or less compressed, accompanied by a modulation of the contact force of the brake strip 9 on the braking surface 6, with the effect of a modulated braking force.

Die in der vorstehenden Beschreibung, der Zeichnung und den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung von Bedeutung sein. Alle offenbarten Merkmale sind erfindungswesentlich. In die Offenbarung der Anmeldung wird hiermit auch der Offenbarungsinhalt der zugehörigen/beigefügten Prioritätsunterlagen (Abschrift der Voranmeldung) vollinhaltlich mit einbezogen.The features of the invention disclosed in the above description, the drawing and the claims can be of importance both individually and in any combination for the implementation of the invention. All the features disclosed are essential to the invention. The disclosure content of the associated / attached priority documents (copy of the prior application) is hereby also included in full in the disclosure of the application.

Claims (17)

  1. Thread store (1) with an essentially cylindrical storage drum (2) for receiving and dispensing circumferentially deposited thread turns (3), with a central thread take-off eye (4) for overhead take-off of the thread (5) and with a braking surface (8) which is supported under spring bias on a take-off slide surface (6) associated with the drum end region (2') on the take-off side and which is formed by the inside of a thin-walled brake strip (9) of flexible material which is smooth on the inside and shaped like the wall of a truncated cone, characterised in that the brake strip (9), which is flexible but essentially non-extendable in the direction in which its surface extends, rests in planar fashion on a frustoconical take-off slide surface (6) and in that a foam body (12) is interposed between a retaining member (10) and the brake strip (9).
  2. Thread store according to claim 1, characterised in that the thread is taken off tangentially to the take-off slide surface (6).
  3. Thread store according to claim 2, characterised in that the thread take-off eye (4) is located in the region of the imaginary apex of the take-off slide surface (6).
  4. Thread store according to any of the preceding claims, characterised in that the brake strip is joined by the intermediate layer (12) to a retaining surface of a retaining member (10).
  5. Thread store according to any of the preceding claims, characterised in that the intermediate layer (12) is formed by a foam body of essentially rectangular cross-section shaped like the wall of a truncated cone.
  6. Thread store according to any of the preceding claims, characterised in that the radial width extent of the foam body (12) is slightly less than the radial width extent of the brake strip (9).
  7. Thread store according to any of the preceding claims, characterised in that the thickness of the intermediate layer (12) is smaller than the width of the brake strip (9), but greater than the maximum possible thread thickness that can be stored.
  8. Thread store according to any of the preceding claims, characterised in that the spring travel of the intermediate layer (12) is less than one-twentieth, preferably about one-fiftieth of the storage drum circumference.
  9. Thread store according to any of the preceding claims, characterised in that the retaining member (10) is sprung in an axial direction (x) relative to the fixing portion (15).
  10. Thread store according to any of the preceding claims, characterised in that the brake strip (9) is formed by a thin-walled metal strip which is smooth on the inside and the thickness of which is preferably less than 0.1 mm.
  11. Thread store according to claim 9, characterised in that the bearing force of the brake strip (9) on the take-off slide surface (6) is adjustable by adjustment of the force of the axial springs (13).
  12. Thread store according to any of the preceding claims, characterised in that the freely radially inwardly extending frustoconical brake strip (9) is car ried by a carrying ring (40) encompassing the storage drum on the drum end side.
  13. Thread store according to claim 12, characterised in that the carrying ring (40) is sprung in the axial direction of the drum against a retaining ring (44).
  14. Thread store according to claim 13, characterised by a fixing ring (43) clipped in the retaining ring (44).
  15. Thread store according to claim 14, characterised by a spring element constructed as a foam body capable of retraction with elastic damping between carrying ring (40) and fixing ring (43).
  16. Thread store according to any of the preceding claims, characterised in that the brake strip (9) is made of plastic and formed integrally with the material of a carrying ring (40).
  17. Thread store according to any of claims 13 to 15, characterised in that the spring bias is variable by displacement of the retaining ring (44) by means of a pneumatically operated piston and cylinder assembly or the like in time with weft insertion of a loom or the like.
EP95908936A 1994-04-13 1995-02-13 Thread store with thread draw-off brake Expired - Lifetime EP0755359B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9406102U 1994-04-13
DE9406102U DE9406102U1 (en) 1994-04-13 1994-04-13 Thread store with thread take-off brake
PCT/EP1995/000522 WO1995028348A1 (en) 1994-04-13 1995-02-13 Thread store with thread draw-off brake

Publications (2)

Publication Number Publication Date
EP0755359A1 EP0755359A1 (en) 1997-01-29
EP0755359B1 true EP0755359B1 (en) 1997-11-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95908936A Expired - Lifetime EP0755359B1 (en) 1994-04-13 1995-02-13 Thread store with thread draw-off brake

Country Status (8)

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EP (1) EP0755359B1 (en)
JP (1) JPH09511975A (en)
KR (1) KR970702209A (en)
CN (1) CN1063722C (en)
AU (1) AU1707395A (en)
DE (2) DE9406102U1 (en)
ES (1) ES2109814T3 (en)
WO (1) WO1995028348A1 (en)

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EP3296242A3 (en) * 2016-09-16 2018-04-11 Memminger-IRO GmbH Thread delivery device

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DE19612720A1 (en) * 1996-03-29 1997-10-02 Iro Ab Thread delivery device
DE19634972A1 (en) * 1996-08-29 1998-03-05 Iro Ab Device for braking a thread and thread delivery device
DE19638618A1 (en) * 1996-09-20 1998-03-26 Iro Ab Thread brake
DE19649220A1 (en) * 1996-11-27 1998-05-28 Iro Ab Thread delivery device with a thread brake
DE29721718U1 (en) * 1997-12-09 1999-04-08 Iro Patent Ag, Baar Thread storage
DE19846221A1 (en) * 1998-10-07 2000-04-13 Iro Patent Ag Baar Thread brake and thread delivery device with a thread brake
ITTO20050063U1 (en) * 2005-05-18 2006-11-19 L G L Elecrtronics S P A REFINEMENT TO A YARN BRAKING DEVICE IN WEFT FEEDERS FOR TEXTILE MACHINES
DE102006001125A1 (en) * 2006-01-09 2007-07-12 Iro Ab Yarn feeding device and brake body
DE602007004475D1 (en) * 2007-07-13 2010-03-11 Lgl Electronics Spa Weft yarn feeding device for textile machines with a yarn braking device
ITTO20111217A1 (en) 2011-12-28 2013-06-29 Lgl Electronics Spa MILLING-PLANE DEVICE FOR FIXED DRUM YARN FEEDERS
ITTO20111218A1 (en) 2011-12-28 2013-06-29 Lgl Electronics Spa YARN FEEDER WITH FIXED DRUM WITH CONTROLLED BLOCK-BLADE DEVICE
KR101293497B1 (en) 2012-05-10 2013-08-07 전자부품연구원 1-axis joint module
CN107043042B (en) * 2017-03-16 2023-04-11 路佃泉 Skein backing-off strutting arrangement in succession
IT201700043202A1 (en) * 2017-04-20 2018-10-20 Lgl Electronics Spa FRENA-PLANE DEVICE FOR ACCUMULATION YARN BALLASTS, AND POWER SUPPLY UNIT THAT IS USING SUCH A FRENCH-PLOTH DEVICE

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EP3296242A3 (en) * 2016-09-16 2018-04-11 Memminger-IRO GmbH Thread delivery device

Also Published As

Publication number Publication date
AU1707395A (en) 1995-11-10
CN1063722C (en) 2001-03-28
DE9406102U1 (en) 1995-08-10
JPH09511975A (en) 1997-12-02
EP0755359A1 (en) 1997-01-29
DE59500989D1 (en) 1997-12-18
WO1995028348A1 (en) 1995-10-26
KR970702209A (en) 1997-05-13
ES2109814T3 (en) 1998-01-16
CN1149863A (en) 1997-05-14

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