EP0425790A2 - Traversing mechanism - Google Patents

Traversing mechanism Download PDF

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Publication number
EP0425790A2
EP0425790A2 EP90116723A EP90116723A EP0425790A2 EP 0425790 A2 EP0425790 A2 EP 0425790A2 EP 90116723 A EP90116723 A EP 90116723A EP 90116723 A EP90116723 A EP 90116723A EP 0425790 A2 EP0425790 A2 EP 0425790A2
Authority
EP
European Patent Office
Prior art keywords
belt
guide rollers
traversing
rollers
guide
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
EP90116723A
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German (de)
French (fr)
Other versions
EP0425790B1 (en
EP0425790A3 (en
Inventor
Heiner Kudrus
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH
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Filing date
Publication date
Application filed by W Schlafhorst AG and Co, NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH filed Critical W Schlafhorst AG and Co
Publication of EP0425790A2 publication Critical patent/EP0425790A2/en
Publication of EP0425790A3 publication Critical patent/EP0425790A3/en
Application granted granted Critical
Publication of EP0425790B1 publication Critical patent/EP0425790B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2821—Traversing devices driven by belts or chains
    • B65H54/2824—Traversing devices driven by belts or chains with at least two traversing guides travelling in opposite directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/20—Belt drives
    • B65H2403/21—Timing belts
    • 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 traversing device according to the preamble of patent claim 1.
  • two endless belts each rotating over two guide rollers, are arranged in such a way that one strand of one belt is guided parallel to a strand of the other belt at a short distance.
  • the guide rollers of one belt and the guide rollers of the other belt are coaxial or with offset parallel ones Axes are arranged side by side, ie so that the idler of one belt and the corresponding idler of the other belt face each other on one side.
  • the course of the belt is approximately S-shaped, so that the belt abuts the outer idler with one side surface and the inner idler with the other side surface.
  • the drivers sit on a narrow edge of the belt.
  • DE-OS 36 27 544 also describes a belt changer with a single belt which is guided over outer and inner guide rollers. These are arranged similarly to the device described above, but the belt between the outer guide roller and the associated inner guide roller is guided in the form of a reversing loop via an additional deflection roller. All roller axes are parallel, so that the belt - as in the device described above - runs in one plane. This plane is parallel to the plane of the traversing triangle.
  • a device differs from this, which is described in US Pat. No. 3,333,782, inter alia in that the axes of the different rollers are slightly inclined to one another. As a result, the two strands of the traversing area are not exactly parallel, but intersect at a very acute angle. This is to facilitate the transfer of the thread at the end of the traversing area.
  • this arrangement does not change the fact that in this device, too, the four guide rollers, viewed in the direction of movement of one of the strands, are essentially arranged in a row one behind the other.
  • the belt is upright with respect to the level of the traversing triangle, and the drivers sit on a narrow edge of the belt.
  • the belt rests with one side surface on the outer, with the other side surface on the associated inner guide roller.
  • the traversing stroke ie the spool length
  • the traversing stroke can obviously not be greater than the distance on which the two strands are parallel or approximately parallel run each other. This distance is equal to the center distance of the two inner idlers, ie the shorter run defines the traverse stroke.
  • the roll diameter cannot be chosen arbitrarily small.
  • the minimum permitted roller diameter depends on the type of belt and is specified by the belt manufacturer.
  • the belt changers belonging to the state of the art have considerably longer lengths and the resulting coil spacings than those of traversers, which are equipped, for example, with reverse thread shafts.
  • DE-OS 37 39 850 deals with the last discussed problem and describes a traversing device in which two guide rollers with parallel axes are arranged in a plane mirror-symmetrically next to each other at the two ends of the traversing area, so that the two dreams passing through the traversing area are the same are long.
  • Each of the two idler rollers is assigned a laterally arranged deflection roller.
  • the belt is looped around both guide rollers and the part of the belt connecting the two guide rollers is guided at a short distance in front of or behind the two guide rollers.
  • the entire rotation of the belt is on one level.
  • the overall length / traversing stroke ratio is considerably more favorable than with the other belt systems. But it has the disadvantage that it is in the direction transverse to Traversing movement in a plane parallel to the traversing triangle is very bulky. As a result, their possible uses are limited, and the fundamentally existing advantage cannot always be fully exploited for design reasons.
  • the invention has for its object to provide a traversing device of the type specified in the preamble of claim 1, which is compact with a favorable length / traversing stroke also in the transverse direction.
  • the belt lies on all the rollers over which it is guided with the toothed inside. There is no counter-curvature at any point in the cycle.
  • the drivers sit on the outer surface of the belt.
  • the belt strands pass through the traversing area in a flat position, i.e. the outer surface is at least approximately parallel to the plane of the traversing triangle.
  • the arrangement specified in claim 2 has advantages in operation because the lines on which the drivers move in the traversing area lie close together.
  • the combination of features of claim 4 is particularly suitable for ensuring an exact thread transfer at the reversal points of the traversing area.
  • the claim contained in claim 1 that the guide rollers are arranged "side by side” does not exclude that they are offset according to claim 4, e.g. by a piece that corresponds approximately to the radius of the guide roller.
  • the design of the drivers according to claim 5 has the advantage that the drivers - compared to the double-wedge-like drivers usually used in other belt systems - cause practically no local stiffening of the belt and have only a very small mass; this improves the running smoothness.
  • Figures 1 to 3 show three views of an embodiment from three mutually perpendicular directions.
  • FIG. 4 shows a detail in perspective and serves in particular to explain the term "spatial belt transmission”.
  • FIGS. 5 and 6 show two views from mutually perpendicular directions.
  • FIGS. 7 and 8 show schematic views according to arrows VII and VIII of FIG. 5.
  • Figures 9 to 11 show three views of a further embodiment from three mutually perpendicular directions.
  • FIGS. 12 and 13 show, on an enlarged scale, a detail from FIG. 9 in the form of snapshots of two different operating phases.
  • each part in FIGS. 5 to 8 which has essentially the same function as a part of FIGS. 1 to 3 has been provided with a reference number which differs from the reference number of the corresponding part in FIGS. 1 to 3 by adding the Number 20 differs.
  • the number 40 was added in FIGS. 9 to 11.
  • Two toothed guide rollers 4, 5 and 6, 7 are rotatably mounted on axes 1, 2, which are fastened on the opposite sides of a base plate 3 in the vicinity of the edge located in FIG. 1.
  • Two deflection rollers, which are also provided with teeth on the circumference, are arranged in the vicinity of the lower edge of the base plate 3.
  • One deflection roller 8 is loosely rotatable on an axis 10.
  • the other deflection roller 9 is seated on the shaft 11 of a drive motor 12.
  • the axis 10 lies skew to the axis 1, in such a way that the parallel projection of the axis perpendicular to the image plane of FIG 1 crosses the axis 10 at a right angle, as can be seen in particular from FIG. 2. The same applies to the shaft 11 on which the deflection roller 9 is seated with respect to the axis 2.
  • An endless toothed belt 13 which is equipped with a plurality of drivers 14 arranged at equal intervals, is guided over the guide rollers 4, 5, 6, 7 and the deflection rollers 8, 9. Between the two pairs of guide rollers 4, 5 on the one hand and 6, 7 on the other hand there are two parallel runs 15, 16 which - as indicated by arrows in FIG. 2 - move in opposite directions.
  • the belt 13 wraps around each guide roller in an angular range of 900 and forms reversing loops 17, 18, in which it is guided over the deflection rollers 8, 9 in the manner of a spatial belt drive. Due to the skewed axis arrangement, it is twisted in the area of the deflection loops.
  • the guide roller 4 and the deflection roller 8 are arranged relative to one another in such a way that the straight line which connects the two run-off points A, B is at the same time the intersection line of the two middle roller planes. In a spatial belt transmission for two rollers, between which a twisted belt section runs, this condition is always met, even if the relative angular position of the axes deviates from the position shown in FIGS. 1 to 4.
  • the area in which the two strands 15, 16 extend is the traversing area.
  • the plane in which a fed thread 19 moves back and forth during operation, ie the plane of the traversing triangle, is perpendicular to the plane of the drawing in the representations of FIG. 1 and FIG. 3; in the representation of Figure 2 it is parallel to it.
  • the strands 15, 16 thus pass through the traversing area - in relation to the level of the traversing triangle - in a flat position, and the drivers sit on the outer surface.
  • each guide roller 24 to 27 is mounted on its own axis.
  • the axes of the guide roller pairs 24, 25 and 26, 27 are inclined and intersect at an obtuse angle in the projection according to FIGS. 7 and 8.
  • the axes of the two guide rollers 24, like the axes of the two guide rollers 26, 27 in the direction in which the strands 35, 36 extend, are offset from one another by a distance which corresponds approximately to the radius of a guide roller.
  • the axes and the holding members of the guide rollers 24 to 27 have not been drawn in FIGS. 5 to 8; they can be designed, for example, similarly to the exemplary embodiment of FIGS. 9 to 11 described further below and attached to the base plate 23.
  • the guide rollers 24, 25 as well as the guide roll 26, 27 are arranged side by side and face each other a side surface.
  • the toothed belt 33 wraps around the guide rollers 24 to 27 each in an angular range of 180 °.
  • the drivers 34 are designed as thin pins and protrude obliquely from the outer surface of the belt 33, so that they are aligned perpendicular to the plane of the traversing triangle when passing through the traversing area, as can be seen from FIG. 7 and FIG.
  • the geometric axes of the deflection rollers 28, 29 are arranged at right angles to the direction in which the strands 35, 36 extend, and in the representations according to FIG. 7 and FIG. 8 coincide with the bisector of the obtuse angle that the axes of the guide rollers 24 , 25 or 26, 27 include.
  • the reversing loops 37, 38 overlap in such a way that the deflecting roller 28 belonging to the reversing loop 37 of the pair of idler rollers 24, 25 is closer to the other pair of idler rollers 26, 27 than the deflecting roller 29 belonging to the reversing loop 38 thereof.
  • the idler rollers 26 , 27 a slightly smaller diameter than the guide rollers 24, 25, so that the two reversing loops 37, 38 lie in separate planes. These two levels are parallel to the level in which the two dreams 35, 36 run.
  • the deflection roller 29 is seated on the shaft 31 of a drive motor 32.
  • FIGS. 9 to 11 coincides with that of FIGS. 5 to 8 in that the axes of the two guide roller pairs 44, 45; 46, 47 in the direction in which the strands 55, 56 extend, offset from one another and - as can be seen from FIG. 11 - are inclined; however, the skew is significantly less than in the previous embodiment.
  • This is due to an arrangement of the deflection rollers 48, 49, which corresponds approximately to the arrangement according to FIGS. 1 to 3, but with the difference that the geometric axes of the order steering rollers 48, 49 and the drive motor 52 in accordance with the offset arrangement of the guide roller pairs 44, 45; 46, 47 are slanted.
  • the center plane of the deflection roller 48 intersects the center plane of the two guide rollers 44, 45 in the two lines shown in dash-dot lines in FIG. 11, which represent the connecting straight lines of the run-off points on both sides.
  • the reversing loops 57, 58 are asymmetrical: FIG. 11 shows that the part that extends from the guide roller 44 to the deflection roller 48 , is more twisted than the other part.
  • the guide rollers 44 to 47 and the deflection rollers 48, 49 all have the same diameter.
  • Figures 12 and 13 serve to illustrate the thread transfer at the end of the traversing area.
  • the driver 54a which projects vertically from the outer surface of the belt 53 and projects beyond the thread guide ruler 60, moves the thread 59 to the left along the thread guide ruler 60.
  • the driver 54a has reached the guide roller 44, it continues to move on the guide roller on a curved path. In the process, its tip dips under the edge of the thread guide ruler 60 and loses contact with the thread 59.
  • the oncoming other thread guide 54b has a position due to the offset arrangement of the guide rollers 44, 45 reached, in which it protrudes beyond the edge of the thread guide ruler 60.

Landscapes

  • Mechanical Treatment Of Semiconductor (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Winding Filamentary Materials (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Polarising Elements (AREA)

Abstract

A plurality of drivers (14) are attached to an endless rotating belt (13). In the traversing region, two strands (15, 16) of the belt (13) are movable between two respective guide rollers (4, 5; 6,7) at least approximately parallel and in opposite directions. Outside the traversing region, the belt (13) forms, on each of the two sides, a reversing loop (17, 18) which is guided over a deflecting roller (8, 9). According to the invention, the guide rollers (4, 5) and the guide rollers (6, 7) are so arranged next to one another that they confront one another with a side face. The deflecting rollers (8, 9) are arranged askew to the guide rollers (4, 5; 6, 7), so that, in the region of the reversing loops (17, 18), the belt (13) is twisted in the manner of a three-dimensional belt drive. This ensures that the constructional-length/traversing-stroke ratio is more advantageous than in known belt traversing devices which are equipped with a single belt. The device is especially suitable for winding appliances in which a plurality of bobbins are arranged in one or more rows next to one another on one axis. <IMAGE>

Description

Die Erfindung betrifft eine Changiervorrichtung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a traversing device according to the preamble of patent claim 1.

Für das Aufspulen von Fäden bei extrem hohen Fadengeschwin­digkeiten - z.B. 6.000 m/min. - sind Changiervorrichtungen bekannt, bei denen der Faden durch Mitnehmer hin und her geführt wird, die auf zwei gegensinnig bewegten, neben­einander angeordneten Riementrumen befestigt sind. Die alternierende Bewegung des Fadens wird dabei nicht wie bei herkömmlichen Changiervorrichtungen durch einen einzigen, hin und her bewegten Fadenführer bewirkt, sondern dadurch, daß die gegenläufig bewegten Mitnehmer abwechselnd den Faden erfassen und führen. Da die Mitnehmer an den Umkehr­punkten des Fadens weder beschleunigt noch verzögert werden, wird der Einfluß der trägen Masse der Fadenfüh­rungsorgane bei der Fadenumkehr völlig ausgeschaltet.For winding threads at extremely high thread speeds - e.g. 6,000 m / min. - Traversing devices are known in which the thread is guided back and forth by drivers which are fastened on two belt strands arranged in opposite directions and arranged side by side. The alternating movement of the thread is not brought about by a single thread guide moved back and forth as in conventional traversing devices, but by the fact that the oppositely moving drivers alternately grasp and guide the thread. Since the drivers at the reversal points of the thread are neither accelerated nor decelerated, the influence of the inert mass of the thread guide members is completely eliminated when the thread is reversed.

In der DE-OS 15 35 091 sind verschiedene Riemenchangierer schematisch dargestellt. Bei mehreren Ausführungsbeispielen sind je zwei endlose, über je zwei Leitrollen umlaufende Riemen so angeordnet, daß ein Trum des einen Riemens in kurzem Abstand parallel zu einem Trum des anderen Riemens geführt ist. Darunter sind auch Ausführungsbeispiele, bei denen die Leitrollen des einen Riemens und die Leitrollen des anderen Riemen koaxial oder mit versetzten parallelen Achsen nebeneinander angeordnet sind, d.h. so, daß die Leitrolle des einen Riemens und die korrespondierende Leitrolle des anderen Riemens einander eine Seitenfläche zukehren. Die Praxis hat gezeigt, daß bei Zweiriemen­systemen - bedingt durch unterschiedliche Dehnungen der beiden Riemen infolge unterschiedlicher Materialeigen­schaften oder unterschiedlicher Alterung - häufig Synchro­nisationsprobleme auftreten, die zu einem unexakten Aufbau der Endflächen der Spulen führen. Mit derartigen Zwei­riemensystemen befaßt sich die Neuerung nicht.In DE-OS 15 35 091 different belt changers are shown schematically. In several exemplary embodiments, two endless belts, each rotating over two guide rollers, are arranged in such a way that one strand of one belt is guided parallel to a strand of the other belt at a short distance. These also include exemplary embodiments in which the guide rollers of one belt and the guide rollers of the other belt are coaxial or with offset parallel ones Axes are arranged side by side, ie so that the idler of one belt and the corresponding idler of the other belt face each other on one side. Practice has shown that in two-belt systems - due to different stretching of the two belts due to different material properties or different aging - synchronization problems often occur, which lead to an inexact structure of the end faces of the spools. The innovation is not concerned with such two-belt systems.

Bei einem anderen in der erwähnten Druckschrift darge­stellten Ausführungsbeispiel ist jedoch nur ein einziger umlaufender Riemen vorhanden. Dieser bildet zwischen zwei äußeren Leitrollen das eine, längere Trum und zwischen inneren Leitrollen das andere, kürzere Trum des Changier­bereichs. Alle Leitrollen liegen in einer Ebene, und zwar, wenn man in die Bewegungsrichtung eines der Trume blickt, in einer Reihe hintereinander. Die äußeren Leitrollen sind mit relativ großem Abstand voneinander angeordnet. In dem Zwischenraum ist den beiden äußeren Leitrollen - eng be­nachbart - je eine innere Leitrolle zugeordnet. Die inneren Leitrollen führen das kürzere Trum auf einer Strecke, die etwa dem Achsabstand der beiden inneren Leitrollen ent­spricht und den maximal möglichen Changierhub definiert, in kurzem Abstand parallel zu dem entgegenkommenden längeren Trum. Beim Übergang von der äußeren Leitrolle zu der zuge­ordneten inneren Leitrolle ist der Verlauf des Riemens an­nährend S-förmig, so daß der Riemen mit der einen Seiten­fläche an der äußeren und mit der anderen Seitenfläche an der inneren Leitrolle anliegt. Die Mitnehmer sitzen auf einer schmalen Kante des Riemens.In another embodiment shown in the mentioned publication, however, there is only a single circumferential belt. This forms the one, longer strand between two outer guide rollers and the other, shorter strand of the traversing area between inner guide rollers. All idlers are in one plane, and in a row when you look in the direction of movement of one of the dreams. The outer guide rollers are arranged at a relatively large distance from one another. In the space between the two outer idlers - closely adjacent - an inner idler is assigned. The inner guide rollers guide the shorter strand on a distance that corresponds approximately to the center distance of the two inner guide rollers and defines the maximum possible traverse stroke, at a short distance parallel to the oncoming longer strand. During the transition from the outer idler to the associated inner idler, the course of the belt is approximately S-shaped, so that the belt abuts the outer idler with one side surface and the inner idler with the other side surface. The drivers sit on a narrow edge of the belt.

Auch die DE-OS 36 27 544 beschreibt einen Riemenchangierer mit einem einzigen Riemen, der über äußere und innere Leit­rollen geführt ist. Diese sind ähnlich angeordnet wie bei der vorhin beschriebenen Vorrichtung, jedoch ist der Riemen zwischen äußerer Leitrolle und zugeordneter innerer Leit­rolle in Gestalt einer Umkehrschleife über eine zusätzliche Umlenkrolle geführt. Alle Rollenachsen sind parallel, so daß der Riemen - ebenso wie bei der vorhin beschriebenen Vorrichtung - in einer Ebene verläuft. Diese Ebene ist parallel zu der Ebene des Changierdreiecks.DE-OS 36 27 544 also describes a belt changer with a single belt which is guided over outer and inner guide rollers. These are arranged similarly to the device described above, but the belt between the outer guide roller and the associated inner guide roller is guided in the form of a reversing loop via an additional deflection roller. All roller axes are parallel, so that the belt - as in the device described above - runs in one plane. This plane is parallel to the plane of the traversing triangle.

Hiervon unterscheidet sich eine Vorrichtung, die in der US-­PS 33 33 782 beschrieben ist, unter anderem dadurch, daß die Achsen der verschiedenen Rollen zueinander leicht ge­neigt sind. Infolgedessen sind die beiden Trume des Chan­gierbereichs nicht exakt parallel, sondern kreuzen sich unter einem sehr spitzen Winkel. Dadurch soll die Übergabe des Fadens jeweils am Ende des Changierbereichs erleichtert werden. Diese Anordnung ändert aber nichts daran, daß auch bei dieser Vorrichtung die vier Leitrollen, in Bewegungs­richtung eines der Trume gesehen, im wesentlichen in einer Reihe hintereinander angeordnet sind. Der Riemen steht hochkant in bezug auf die Ebene des Changierdreiecks, und die Mitnehmer sitzen auf einer schmalen Kante des Riemens. Der Riemen liegt mit der einen Seitenfläche an der äußeren, mit der anderen Seitenf läche an der zugeordneten inneren Leitrolle an.A device differs from this, which is described in US Pat. No. 3,333,782, inter alia in that the axes of the different rollers are slightly inclined to one another. As a result, the two strands of the traversing area are not exactly parallel, but intersect at a very acute angle. This is to facilitate the transfer of the thread at the end of the traversing area. However, this arrangement does not change the fact that in this device, too, the four guide rollers, viewed in the direction of movement of one of the strands, are essentially arranged in a row one behind the other. The belt is upright with respect to the level of the traversing triangle, and the drivers sit on a narrow edge of the belt. The belt rests with one side surface on the outer, with the other side surface on the associated inner guide roller.

Bei den bisher erörterten Riemenchangierern, bei denen die beiden gegenläufigen Trume einem einzigen endlosen Riemen angehören, kann der Changierhub, d.h. die Spulenlänge, offensichtlich nicht größer sein als die Strecke, auf der die beiden Trume parallel oder annähernd parallel neben­ einander laufen. Diese Strecke ist gleich dem Achsabstand der beiden inneren Leitrollen, d.h. das kürzere Trum defi­niert den Changierhub. Das bedeutet mit anderen Worten, daß die Baulänge des Riemenchangierers - d.h. die Abmessung in Changierrichtung - stets die Spulenlänge um mindestens das Dreifache des Rollendurchmessers überschreitet. Wenn meh­rere derartige Systeme zum gleichzeitigen Wickeln mehrerer auf einer Achse angeordneter Spulen reihenweise neben­einander gesetzt werden, dann ist der systembedingte Ab­stand zwischen je zwei Spulen stets größer als der drei­fache Rollendurchmesser. Der Rollendurchmesser kann nicht beliebig klein gewählt werden. Der minimal zulässige Rollendurchmesser hängt von der Art des Riemens ab und wird vom Riemenhersteller vorgeschrieben. In der Praxis ergeben sich für die zum Stand der Technik gehörenden Riemenchan­gierer erheblich größere Baulängen und dadurch bedingte Spulenabstände als bei Changierern, die z.B. mit Kehrge­windewellen ausgerüstet sind.In the belt changers discussed so far, in which the two opposing strands belong to a single endless belt, the traversing stroke, ie the spool length, can obviously not be greater than the distance on which the two strands are parallel or approximately parallel run each other. This distance is equal to the center distance of the two inner idlers, ie the shorter run defines the traverse stroke. In other words, this means that the overall length of the belt changer - ie the dimension in the traversing direction - always exceeds the spool length by at least three times the roll diameter. If several such systems for the simultaneous winding of several coils arranged on one axis are placed in rows next to one another, then the system-related distance between two coils is always greater than three times the roll diameter. The roll diameter cannot be chosen arbitrarily small. The minimum permitted roller diameter depends on the type of belt and is specified by the belt manufacturer. In practice, the belt changers belonging to the state of the art have considerably longer lengths and the resulting coil spacings than those of traversers, which are equipped, for example, with reverse thread shafts.

Die DE-OS 37 39 850 befaßt sich mit dem zuletzt erörterten Problem und beschreibt eine Changiervorrichtung, bei der an den beiden Enden des Changierbereichs je zwei Leitrollen mit parallelen Achsen in einer Ebene spiegelsymmetrisch nebeneinander angeordnet sind, so daß die beiden den Chan­gierbereich durchlaufenden Trume gleich lang sind. Jeder der beiden Leitrollen ist eine seitlich angeordnete Umlenk­rolle zugeordnet. Der Riemen ist um beide Umlenkrollen schleifenartig herumgeführt, und der die beiden Umlenk­rollen verbindende Teil des Riemens ist in geringem Abstand vor bzw. hinter den beiden Leitrollen geführt. Der gesamte Umlauf des Riemens liegt in einer Ebene. Bei dieser Vor­richtung ist zwar das Verhältnis Baulänge/Changierhub we­sentlich günstiger als bei den anderen Einriemensystemen. Sie hat aber den Nachteil, daß sie in Richtung quer zur Changierbewegung in einer zum Changierdreieck parallelen Ebene sehr sperrig ist. Dadurch sind ihre Einsatzmöglich­keiten beschränkt, und der grundsätzlich bestehende Vorteil kann aus konstruktiven Gründen nicht immer voll ausge­schöpft werden.DE-OS 37 39 850 deals with the last discussed problem and describes a traversing device in which two guide rollers with parallel axes are arranged in a plane mirror-symmetrically next to each other at the two ends of the traversing area, so that the two dreams passing through the traversing area are the same are long. Each of the two idler rollers is assigned a laterally arranged deflection roller. The belt is looped around both guide rollers and the part of the belt connecting the two guide rollers is guided at a short distance in front of or behind the two guide rollers. The entire rotation of the belt is on one level. With this device, the overall length / traversing stroke ratio is considerably more favorable than with the other belt systems. But it has the disadvantage that it is in the direction transverse to Traversing movement in a plane parallel to the traversing triangle is very bulky. As a result, their possible uses are limited, and the fundamentally existing advantage cannot always be fully exploited for design reasons.

Der Erfindung liegt die Aufgabe zugrunde, eine Changiervor­richtung der im Oberbegriff des Patentanspruchs 1 angegebe­nen Gattung zu schaffen, die bei günstigem Verhältnis Bau­länge/Changierhub auch in Querrichtung kompakt ist.The invention has for its object to provide a traversing device of the type specified in the preamble of claim 1, which is compact with a favorable length / traversing stroke also in the transverse direction.

Diese Aufgabe wird gemäß der Erfindung durch die kennzeich­nenden Merkmale des Patentanspruchs 1 gelöst.This object is achieved according to the invention by the characterizing features of patent claim 1.

Wie die nachfolgende Beschreibung verdeutlicht, ergeben sich aus den kennzeichnenden Merkmalen des Patentanspruchs 1 noch weitere Merkmale, durch die sich die Erfindung von bekannten Einriemensystemen abhebt:As the following description makes clear, the characterizing features of patent claim 1 also result in further features which make the invention stand out from known belt systems:

Der Riemen liegt an allen Rollen, über die er geführt ist, mit der gezahnten Innenseite an. An keiner Stelle des Um­laufs tritt eine Gegenkrümmung auf. Die Mitnehmer sitzen auf der Außenfläche des Riemens. Die Riementrume durch­laufen den Changierbereich in Flachlage, d.h. die Außen­fläche ist zumindest annähernd parallel zur Ebene des Changierdreiecks.The belt lies on all the rollers over which it is guided with the toothed inside. There is no counter-curvature at any point in the cycle. The drivers sit on the outer surface of the belt. The belt strands pass through the traversing area in a flat position, i.e. the outer surface is at least approximately parallel to the plane of the traversing triangle.

Die in Anspruch 2 angegebene Anordnung hat im Betrieb Vorteile, weil die Linien, auf denen sich die Mitnehmer im Changierbereich bewegen, dicht nebeneinander liegen.The arrangement specified in claim 2 has advantages in operation because the lines on which the drivers move in the traversing area lie close together.

Eine besonders kompakte Ausführung wird durch das Merkmal des Anspruchs 3 ermöglicht.A particularly compact design is made possible by the feature of claim 3.

Die Merkmalkombination des Anspruchs 4 ist besonders ge­eignet, an den Umkehrpunkten des Changierbereichs eine exakte Fadenübergabe zu gewährleisten. Die im Anspruch 1 enthaltene Angabe, daß die Leitrollen "nebeneinander" angeordnet sind, schließt nicht aus, daß sie gemäß Anspruch 4 versetzt sind, z.B. um ein Stück, das etwa dem Radius der Leitrolle entspricht.The combination of features of claim 4 is particularly suitable for ensuring an exact thread transfer at the reversal points of the traversing area. The claim contained in claim 1 that the guide rollers are arranged "side by side" does not exclude that they are offset according to claim 4, e.g. by a piece that corresponds approximately to the radius of the guide roller.

Die Ausbildung der Mitnehmer gemäß Anspruch 5 hat den Vor­teil, daß die Mitnehmer - im Vergleich zu den bei anderen Einriemensystemen zumeist angewendeten doppelkeilähnlichen Mitnehmern - praktisch keine örtliche Versteifung des Riemens bewirken und nur eine sehr kleine Masse haben; dadurch wird die Laufruhe verbessert.The design of the drivers according to claim 5 has the advantage that the drivers - compared to the double-wedge-like drivers usually used in other belt systems - cause practically no local stiffening of the belt and have only a very small mass; this improves the running smoothness.

Die Zeichnung dient zur Erläuterung der Erfindung anhand von vereinfacht dargestellten Ausführungsbeispielen.The drawing serves to explain the invention on the basis of exemplary embodiments shown in simplified form.

Die Figuren 1 bis 3 zeigen drei Ansichten eines Ausfüh­rungsbeispiels aus drei zueinander senkrechten Richtungen.Figures 1 to 3 show three views of an embodiment from three mutually perpendicular directions.

Figur 4 zeigt perspektivisch eine Einzelheit und dient insbesondere zur Erläuterung des Begriffs "räumliches Riemengetriebe".FIG. 4 shows a detail in perspective and serves in particular to explain the term "spatial belt transmission".

Die Figuren 5 und 6 zeigen für ein anderes Ausführungs­beispiel zwei Ansichten aus zueinander senkrechten Richtungen.For another exemplary embodiment, FIGS. 5 and 6 show two views from mutually perpendicular directions.

Die Figuren 7 und 8 zeigen schematisierte Ansichten, gemäß den Pfeilen VII bzw. VIII der Figur 5.FIGS. 7 and 8 show schematic views according to arrows VII and VIII of FIG. 5.

Die Figuren 9 bis 11 zeigen drei Ansichten eines weiteren Ausführungsbeispiels aus drei zueinander senkrechten Richtungen.Figures 9 to 11 show three views of a further embodiment from three mutually perpendicular directions.

Die Figuren 12 und 13 zeigen in vergrößertem Maßstab eine Einzelheit aus Figur 9 in Form von Momentaufnahmen zweier verschiedener Betriebsphasen.FIGS. 12 and 13 show, on an enlarged scale, a detail from FIG. 9 in the form of snapshots of two different operating phases.

Der Einfachheit halber wurde in den Figuren 5 bis 8 jedes Teil, das im wesentlichen die gleiche Funktion hat wie ein Teil der Figuren 1 bis 3, mit einem Bezugszeichen versehen, das sich von dem Bezugszeichen des entsprechenden Teils der Figuren 1 bis 3 durch Hinzuaddieren der Zahl 20 unterschei­det. Analog wurde in den Figuren 9 bis 11 die Zahl 40 hin­zuaddiert. Infolgedessen brauchten diese Teile im Zusammen­hang mit den Figuren 5 bis 11 im wesentlichen nur insoweit beschrieben zu werden, als sie von den entsprechenden Teilen der Figuren 1 bis 3 abweichen.For the sake of simplicity, each part in FIGS. 5 to 8 which has essentially the same function as a part of FIGS. 1 to 3 has been provided with a reference number which differs from the reference number of the corresponding part in FIGS. 1 to 3 by adding the Number 20 differs. Analogously, the number 40 was added in FIGS. 9 to 11. As a result, these parts only needed to be described in connection with FIGS. 5 to 11 insofar as they differ from the corresponding parts of FIGS. 1 to 3.

Auf Achsen 1, 2, die in der Nähe der in Figur 1 oben lie­genden Kante an entgegengesetzten Seiten einer Grundplatte 3 befestigt sind, sind je zwei gezahnte Leitrollen 4, 5 bzw. 6, 7 drehbar gelagert. Zwei Umlenkrollen, die eben­falls am Umfang mit Zähnen versehen sind, sind in der Nähe der unten liegenden Kante der Grundplatte 3 angeordnet. Die eine Umlenkrolle 8 sitzt lose drehbar auf einer Achse 10. Die andere Umlenkrolle 9 sitzt auf der Welle 11 eines An­triebsmotors 12. Die Achse 10 liegt windschief zu der Achse 1, und zwar so, daß die zur Bildebene der Figur 2 senk­rechte Parallelprojektion der Achse 1 die Achse 10 im rechten Winkel kreuzt, wie insbesondere aus Figur 2 erkenn­bar. Entsprechendes gilt für die Welle 11, auf der die Umlenkrolle 9 sitzt, in bezug auf die Achse 2.Two toothed guide rollers 4, 5 and 6, 7 are rotatably mounted on axes 1, 2, which are fastened on the opposite sides of a base plate 3 in the vicinity of the edge located in FIG. 1. Two deflection rollers, which are also provided with teeth on the circumference, are arranged in the vicinity of the lower edge of the base plate 3. One deflection roller 8 is loosely rotatable on an axis 10. The other deflection roller 9 is seated on the shaft 11 of a drive motor 12. The axis 10 lies skew to the axis 1, in such a way that the parallel projection of the axis perpendicular to the image plane of FIG 1 crosses the axis 10 at a right angle, as can be seen in particular from FIG. 2. The same applies to the shaft 11 on which the deflection roller 9 is seated with respect to the axis 2.

Ein endloser Zahnriemen 13, der mit mehreren in gleich großen Abständen angeordneten Mitnehmern 14 bestückt ist, ist über die Leitrollen 4, 5, 6, 7 und die Umlenkrollen 8, 9 geführt. Zwischen den beiden Leitrollenpaaren 4, 5 einer­seits und 6, 7 andererseits befinden sich zwei parallele Trume 15, 16, die sich - wie in Figur 2 durch Pfeile angedeutet - in entgegengesetzten Richtungen bewegen. Der Riemen 13 umschlingt jede Leitrolle in einem Winkelbereich von 900 und bildet Umkehrschleifen 17, 18, in denen er nach Art eines räumlichen Riemengetriebes über die Umlenkrollen 8, 9 geführt ist. Infolge der windschiefen Achsenanordnung ist er im Bereich der Umlenkschleifen tordiert. An allen Leitrollen und an den beiden Umlenkrollen liegt er mit seiner gezahnten Innenfläche an. Wie Figur 4 veranschau­licht, sind die Leitrolle 4 und die Umlenkrolle 8 relativ zueinander so angeordnet, daß die Gerade, die die beiden Ablaufpunkte A, B miteinander verbindet, zugleich die Schnittlinie der beiden mittleren Rollenebenen ist. Diese Bedingung ist bei einem räumlichen Riemengetriebe für zwei Rollen, zwischen denen ein verdrillter Riemenabschnitt ver­läuft, stets erfüllt, auch wenn die relative Winkellage der Achsen von der in den Figuren 1 bis 4 gezeichneten Lage abweicht.An endless toothed belt 13, which is equipped with a plurality of drivers 14 arranged at equal intervals, is guided over the guide rollers 4, 5, 6, 7 and the deflection rollers 8, 9. Between the two pairs of guide rollers 4, 5 on the one hand and 6, 7 on the other hand there are two parallel runs 15, 16 which - as indicated by arrows in FIG. 2 - move in opposite directions. The belt 13 wraps around each guide roller in an angular range of 900 and forms reversing loops 17, 18, in which it is guided over the deflection rollers 8, 9 in the manner of a spatial belt drive. Due to the skewed axis arrangement, it is twisted in the area of the deflection loops. With its toothed inner surface, it rests on all guide rollers and on the two deflection rollers. As illustrated in FIG. 4, the guide roller 4 and the deflection roller 8 are arranged relative to one another in such a way that the straight line which connects the two run-off points A, B is at the same time the intersection line of the two middle roller planes. In a spatial belt transmission for two rollers, between which a twisted belt section runs, this condition is always met, even if the relative angular position of the axes deviates from the position shown in FIGS. 1 to 4.

Der Bereich, in dem sich die beiden Trume 15, 16 er­strecken, ist der Changierbereich. Die mit dem Buchstaben h bezeichnete Länge, d.h. im wesentlichen der Abstand der Achsen 1, 2, ist der Changierhub. Die Ebene, in der sich im Betrieb ein zugeführter Faden 19 hin und her bewegt, d.h. die Ebene des Changierdreiecks, steht bei den Darstellungen der Figur 1 und der Figur 3 senkrecht auf der Ebene der Zeichnung; bei der Darstellung der Figur 2 liegt sie zu ihr parallel.The area in which the two strands 15, 16 extend is the traversing area. The length designated by the letter h, ie essentially the distance between the axes 1, 2, is the traversing stroke. The plane in which a fed thread 19 moves back and forth during operation, ie the plane of the traversing triangle, is perpendicular to the plane of the drawing in the representations of FIG. 1 and FIG. 3; in the representation of Figure 2 it is parallel to it.

Die Trume 15, 16 durchlaufen also den Changierbereich - bezogen auf die Ebene des Changierdreiecks - in Flachlage, und die Mitnehmer sitzen auf der Außenfläche.The strands 15, 16 thus pass through the traversing area - in relation to the level of the traversing triangle - in a flat position, and the drivers sit on the outer surface.

Abweichend von dem bisher beschriebenen Ausführungsbei­spiel, bei dem der Abstand der beiden Trume 15, 16 durch den Durchmesser der Umlenkrollen 8, 9 vorgegeben ist, liegen bei dem nachfolgend beschriebenen, in den Figuren 5 bis 8 veranschaulichten Ausführungsbeispiel die Trume 35, 36 erheblich näher beieinander. Die im Interesse einer exakten Fadenübergabe wünschenswerte Verkleinerung des Ab­standes wird dadurch ermöglicht, daß die Leitrollen 24, 26 des einen Trums 35 und die Leitrollen 25, 27 des anderen Trums 36 in zueinander geneigten Ebenen liegen, so daß sich der zwischen den Leitrollen 24, 25 bzw. 26, 27 befindliche Zwischenraum in Richtung auf die Seite, auf der die Ablauf­punkte der Trume 35, 36 liegen, keilförmig verjüngt, wie man besonders deutlich in Figur 7 und Figur 8 erkennt. Dem­entsprechend ist jede Leitrolle 24 bis 27 auf einer eigenen Achse gelagert. Die Achsen der Leitrollenpaare 24, 25 bzw. 26, 27 sind schräg gestellt und schneiden sich in der Pro­jektion gemäß Figur 7 und Figur 8 unter einem stumpfen Winkel. Außerdem sind die Achsen der beiden Leitrollen 24, ebenso wie die Achsen der beiden Leitrollen 26, 27 in der Richtung, in der sich die Trume 35, 36 erstrecken, um ein Stück zueinander versetzt, das etwa dem Radius einer Leitrolle entspricht. Der Übersichtlichkeit halber sind in den Figuren 5 bis 8 die Achsen und die Halteorgane der Leitrollen 24 bis 27 nicht gezeichnet worden; sie können z.B. ähnlich wie bei dem weiter unten beschriebenen Ausfüh­rungsbeispiel der Figuren 9 bis 11 ausgebildet und an der Grundplatte 23 befestigt sein. Trotz der abgeänderten Lage der Achsen zueinander trifft es für dieses Ausführungsbei­spiel ebenso wie für das Ausführungsbeispiel der Figuren 1 bis 4 zu, daß die Leitrollen 24, 25 ebenso wie die Leit­ rollen 26, 27 nebeneinander angeordnet sind und einander eine Seitenfläche zukehren. Der Zahnriemen 33 umschlingt die Leitrollen 24 bis 27 je in einem Winkelbereich von 180°. Die Mitnehmer 34 sind als dünne Stifte ausgebildet und stehen schräg aus der Außenfläche des Riemens 33 her­vor, so daß sie beim Durchlauf durch den Changierbereich senkrecht zur Ebene des Changierdreiecks ausgerichtet sind, wie aus Figur 7 und Figur 8 ersichtlich. Die geometrischen Achsen der Umlenkrollen 28, 29 sind rechtwinklig zu der Richtung angeordnet, in der sich die Trume 35, 36 er­strecken, und decken sich in den Darstellungen gemäß Figur 7 und Figur 8 mit der Winkelhalbierenden des stumpfen Winkels, den die Achsen der Leitrollen 24, 25 bzw. 26, 27 einschließen. Die Umkehrschleifen 37, 38 überschneiden sich in der Weise, daß die zur Umkehrschleife 37 des Leitrollen­paares 24, 25 gehörende Umlenkrolle 28 näher bei dem anderen Leitrollenpaar 26, 27 liegt als die zu dessen Um­kehrschleife 38 gehörende Umlenkrolle 29. Aus diesem Grunde haben die Leitrollen 26, 27 einen etwas kleineren Durch­messer als die Leitrollen 24, 25, so daß die beiden Umkehr­schleifen 37, 38 in getrennten Ebenen liegen. Diese beiden Ebenen sind parallel zu der Ebene, in der die beiden Trume 35, 36 verlaufen. Die Umlenkrolle 29 sitzt auf der Welle 31 eines Antriebsmotors 32.Deviating from the previously described exemplary embodiment, in which the distance between the two strands 15, 16 is predetermined by the diameter of the deflecting rollers 8, 9, in the exemplary embodiment described below, illustrated in FIGS. 5 to 8, the strands 35, 36 are considerably closer together . The reduction of the distance, which is desirable in the interest of an exact thread transfer, is made possible by the fact that the guide rollers 24, 26 of one strand 35 and the guide rollers 25, 27 of the other strand 36 lie in mutually inclined planes, so that the between the guide rollers 24, 25th or 26, 27 located space in the direction of the side on which the drain points of the dreams 35, 36 are tapered in a wedge shape, as can be seen particularly clearly in FIG. 7 and FIG. 8. Accordingly, each guide roller 24 to 27 is mounted on its own axis. The axes of the guide roller pairs 24, 25 and 26, 27 are inclined and intersect at an obtuse angle in the projection according to FIGS. 7 and 8. In addition, the axes of the two guide rollers 24, like the axes of the two guide rollers 26, 27 in the direction in which the strands 35, 36 extend, are offset from one another by a distance which corresponds approximately to the radius of a guide roller. For the sake of clarity, the axes and the holding members of the guide rollers 24 to 27 have not been drawn in FIGS. 5 to 8; they can be designed, for example, similarly to the exemplary embodiment of FIGS. 9 to 11 described further below and attached to the base plate 23. Despite the changed position of the axes relative to one another, it is true for this exemplary embodiment as for the exemplary embodiment in FIGS. 1 to 4 that the guide rollers 24, 25 as well as the guide roll 26, 27 are arranged side by side and face each other a side surface. The toothed belt 33 wraps around the guide rollers 24 to 27 each in an angular range of 180 °. The drivers 34 are designed as thin pins and protrude obliquely from the outer surface of the belt 33, so that they are aligned perpendicular to the plane of the traversing triangle when passing through the traversing area, as can be seen from FIG. 7 and FIG. The geometric axes of the deflection rollers 28, 29 are arranged at right angles to the direction in which the strands 35, 36 extend, and in the representations according to FIG. 7 and FIG. 8 coincide with the bisector of the obtuse angle that the axes of the guide rollers 24 , 25 or 26, 27 include. The reversing loops 37, 38 overlap in such a way that the deflecting roller 28 belonging to the reversing loop 37 of the pair of idler rollers 24, 25 is closer to the other pair of idler rollers 26, 27 than the deflecting roller 29 belonging to the reversing loop 38 thereof. For this reason, the idler rollers 26 , 27 a slightly smaller diameter than the guide rollers 24, 25, so that the two reversing loops 37, 38 lie in separate planes. These two levels are parallel to the level in which the two dreams 35, 36 run. The deflection roller 29 is seated on the shaft 31 of a drive motor 32.

Das Ausführungsbeispiel gemäß den Figuren 9 bis 11 stimmt mit dem der Figuren 5 bis 8 darin überein, daß die Achsen der beiden Leitrollenpaare 44, 45; 46, 47 in der Richtung, in der sich die Trume 55, 56 erstrecken, zueinander ver­setzt und - wie aus Figur 11 ersichtlich - schräg gestellt sind; jedoch ist die Schrägstellung erheblich geringer als bei dem vorherigen Ausführungsbeispiel. Das ist durch eine Anordnung der Umlenkrollen 48, 49 bedingt, die annähernd der Anordnung gemäß den Figuren 1 bis 3 entspricht, jedoch mit dem Unterschied, daß die geometrischen Achsen der Um­ lenkrollen 48, 49 sowie des Antriebsmotors 52 entsprechend der versetzten Anordnung der Leitrollenpaare 44, 45; 46, 47 schräg gestellt sind. Die Mittelebene der Umlenkrolle 48 schneidet die Mittelebene der beiden Leitrollen 44, 45 in den beiden in Figur 11 strichpunktiert dargestellten Linien, die die Verbindungsgeraden der beiderseitigen Ab­laufpunkte darstellen. Entsprechendes gilt für die Lage der Umlenkrolle 49 relativ zu den Leitrollen 46, 47. Infolge der Schrägstellung der Umlenkrollen 48, 49 sind die Umkehr­schleifen 57, 58 unsymmetrisch: Figur 11 zeigt, daß der Teil, der sich von der Leitrolle 44 zur Umlenkrolle 48 er­streckt, stärker tordiert ist als der andere Teil. Die Leitrollen 44 bis 47 und die Umlenkrollen 48, 49 haben alle den gleichen Durchmesser.The exemplary embodiment according to FIGS. 9 to 11 coincides with that of FIGS. 5 to 8 in that the axes of the two guide roller pairs 44, 45; 46, 47 in the direction in which the strands 55, 56 extend, offset from one another and - as can be seen from FIG. 11 - are inclined; however, the skew is significantly less than in the previous embodiment. This is due to an arrangement of the deflection rollers 48, 49, which corresponds approximately to the arrangement according to FIGS. 1 to 3, but with the difference that the geometric axes of the order steering rollers 48, 49 and the drive motor 52 in accordance with the offset arrangement of the guide roller pairs 44, 45; 46, 47 are slanted. The center plane of the deflection roller 48 intersects the center plane of the two guide rollers 44, 45 in the two lines shown in dash-dot lines in FIG. 11, which represent the connecting straight lines of the run-off points on both sides. The same applies to the position of the deflection roller 49 relative to the guide rollers 46, 47. Due to the inclined position of the deflection rollers 48, 49, the reversing loops 57, 58 are asymmetrical: FIG. 11 shows that the part that extends from the guide roller 44 to the deflection roller 48 , is more twisted than the other part. The guide rollers 44 to 47 and the deflection rollers 48, 49 all have the same diameter.

Die Figuren 12 und 13 dienen zur Veranschaulichung der Fadenübergabe am Ende des Changierbereichs. Gemäß Figur 12 bewegt der senkrecht aus der Außenfläche des Riemens 53 hervorstehende Mitnehmer 54a, der über das Fadenführungs­lineal 60 hinausragt, den Faden 59 längs des Fadenführungs­lineals 60 nach links. Wenn der Mitnehmer 54a die Leitrolle 44 erreicht hat, bewegt er sich an der Leitrolle auf ge­krümmter Bahn weiter. Dabei taucht seine Spitze unter die Kante des Fadenführungslineals 60 und verliert den Kontakt mit dem Faden 59. In diesem Augenblick, der in Figur 13 dargestellt ist, hat der entgegenkommende andere Fadenfüh­rer 54b, bedingt durch die versetzte Anordnung der Leit­rollen 44, 45, eine Position erreicht, in der er über die Kante des Fadenführungslineals 60 hinausragt. Er übernimmt momentan den Faden 59 und verlegt ihn in umgekehrter Rich­tung, d.h. in Figur 13 nach rechts. Anordnungen, die eine ähnlich vorteilhafte und exakte Wirkungsweise ermöglichen, sind zwar schon bei Zweiriemensystemen bekannt. Sie sind aber auf die bisher bekannten Einriemensysteme nicht über­tragbar, da bei diesen Systemen der Riemen in einer Ebene umläuft, wobei er - bezogen auf die Ebene des Changierdrei­ecks - hochkant steht und wobei die Mitnehmer auf seiner schmalen Kante sitzen.Figures 12 and 13 serve to illustrate the thread transfer at the end of the traversing area. According to FIG. 12, the driver 54a, which projects vertically from the outer surface of the belt 53 and projects beyond the thread guide ruler 60, moves the thread 59 to the left along the thread guide ruler 60. When the driver 54a has reached the guide roller 44, it continues to move on the guide roller on a curved path. In the process, its tip dips under the edge of the thread guide ruler 60 and loses contact with the thread 59. At this moment, which is shown in FIG. 13, the oncoming other thread guide 54b has a position due to the offset arrangement of the guide rollers 44, 45 reached, in which it protrudes beyond the edge of the thread guide ruler 60. He is currently taking over the thread 59 and laying it in the opposite direction, ie to the right in FIG. 13. Arrangements that enable a similarly advantageous and exact mode of operation are already known in two-belt systems. However, they are not transferable to the previously known single-belt systems, since in these systems the belt is in one plane revolves, where it stands - in relation to the level of the traversing triangle - upright and the drivers sit on its narrow edge.

Claims (5)

1. Changiervorrichtung für eine Aufspuleinheit mit folgenden Merkmalen:
Auf einem endlosen umlaufenden Riemen (13, 33, 53) sind mehrere Mitnehmer (14, 34, 54) angebracht
In einem Changierbereich verlaufen zwei Trume (15, 16; 35, 36; 55, 56) des Riemens (13, 33, 53) zwischen je zwei Leitrollen (4, 6; 5, 7; 24, 26; 25, 27; 44, 46; 45, 47) zumindest annähernd parallel und sind in ent­gegengesetzten Richtungen bewegbar
Beiderseits außerhalb des Changierbereichs bildet der Riemen (13, 33, 53) je eine Umkehrschleife (17, 18; 37, 38; 57, 58), die über mindestens eine Umlenkrolle (8, 9; 28, 29; 48, 49) geführt ist,
dadurch gekennzeichnet,
daß die Leitrollen (4, 5; 6, 7; 24, 25; 26, 27; 44, 45; 46, 47) der beiden Trume (15, 16; 35, 36; 55, 56) in der Weise nebeneinander angeordnet sind, daß sie ein­ander eine Seitenfläche zukehren,
daß die Umlenkrollen (8, 9; 28, 29; 48, 49) windschief zu den Leitrollen angeordnet sind
und daß der Riemen (13, 33, 53) im Bereich der Umlenk­schleifen (17, 18; 37, 38; 57, 58) nach Art eines räum­lichen Riemengetriebes tordiert ist.1. Traversing device for a winding unit with the following features:
A plurality of drivers (14, 34, 54) are attached to an endless circumferential belt (13, 33, 53)
In a traversing area, two strands (15, 16; 35, 36; 55, 56) of the belt (13, 33, 53) run between two guide rollers (4, 6; 5, 7; 24, 26; 25, 27; 44) , 46; 45, 47) at least approximately parallel and can be moved in opposite directions
On both sides outside the traversing area, the belt (13, 33, 53) forms a reversing loop (17, 18; 37, 38; 57, 58), which is guided over at least one deflection roller (8, 9; 28, 29; 48, 49) is
characterized,
that the guide rollers (4, 5; 6, 7; 24, 25; 26, 27; 44, 45; 46, 47) of the two strands (15, 16; 35, 36; 55, 56) are arranged side by side in the manner that they face each other,
that the deflection rollers (8, 9; 28, 29; 48, 49) are arranged skew to the guide rollers
and that the belt (13, 33, 53) is twisted in the region of the deflection loops (17, 18; 37, 38; 57, 58) in the manner of a spatial belt transmission. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Abstand zwischen den beiden Trumen (35, 36) durch Schrägstellung der Achsen der Leitrollen (24, 25; 26, 27; 44, 45; 46, 47) verkleinert ist.2. Device according to claim 1, characterized in that the distance between the two runs (35, 36) is reduced by inclining the axes of the guide rollers (24, 25; 26, 27; 44, 45; 46, 47). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß der Riemen (33) die Leitrollen (24, 25; 26, 27) in einem Winkelbereich von 180° umschlingt.3. Apparatus according to claim 1 or 2, characterized in that the belt (33) wraps around the guide rollers (24, 25; 26, 27) in an angular range of 180 °. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Achsen der beiden nebeneinander angeordneten Leitrollen (24, 25; 26, 27; 44, 45; 46, 47) in der Richtung, in der sich die Trume (35, 36; 56) erstrecken, versetzt angeordnet sind und daß zwischen den beiden Trumen (35, 36; 56) zumindest im Bereich der Leitrollen ein Führungslineal (40, 60) angeordnet ist.4. Device according to one of claims 1 to 3, characterized in that the axes of the two adjacent guide rollers (24, 25; 26, 27; 44, 45; 46, 47) in the direction in which the strands (35 , 36; 56), are arranged offset and that a guide ruler (40, 60) is arranged between the two runs (35, 36; 56) at least in the region of the guide rollers. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Mitnehmer (34, 54) als dünne Stifte ausgeführt sind, die senkrecht oder annähernd senkrecht aus der Außenfläche des Riemens (33, 53) hervorstehen.5. The device according to claim 4, characterized in that the drivers (34, 54) are designed as thin pins which protrude vertically or approximately perpendicularly from the outer surface of the belt (33, 53).
EP90116723A 1989-10-31 1990-08-31 Traversing mechanism Expired - Lifetime EP0425790B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8912875U 1989-10-31
DE8912875U DE8912875U1 (en) 1989-10-31 1989-10-31 Traversing device

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EP0425790A2 true EP0425790A2 (en) 1991-05-08
EP0425790A3 EP0425790A3 (en) 1992-02-26
EP0425790B1 EP0425790B1 (en) 1995-05-10

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US (1) US5076509A (en)
EP (1) EP0425790B1 (en)
JP (1) JPH0678154B2 (en)
AT (1) ATE122319T1 (en)
DE (2) DE8912875U1 (en)

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Also Published As

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ATE122319T1 (en) 1995-05-15
JPH0678154B2 (en) 1994-10-05
DE8912875U1 (en) 1989-12-28
JPH03147677A (en) 1991-06-24
EP0425790B1 (en) 1995-05-10
EP0425790A3 (en) 1992-02-26
DE59009058D1 (en) 1995-06-14
US5076509A (en) 1991-12-31

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