EP0725032A2 - Flat sliver can - Google Patents

Flat sliver can Download PDF

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Publication number
EP0725032A2
EP0725032A2 EP96105019A EP96105019A EP0725032A2 EP 0725032 A2 EP0725032 A2 EP 0725032A2 EP 96105019 A EP96105019 A EP 96105019A EP 96105019 A EP96105019 A EP 96105019A EP 0725032 A2 EP0725032 A2 EP 0725032A2
Authority
EP
European Patent Office
Prior art keywords
flat
sliver
plate
bulge
platform
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
EP96105019A
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German (de)
French (fr)
Other versions
EP0725032A3 (en
EP0725032B1 (en
Inventor
Michael Ueding
Jürgen Sauer
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0725032A2 publication Critical patent/EP0725032A2/en
Publication of EP0725032A3 publication Critical patent/EP0725032A3/en
Application granted granted Critical
Publication of EP0725032B1 publication Critical patent/EP0725032B1/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
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/16—Cans or receptacles, e.g. sliver cans
    • 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 flat can for receiving sliver, which is delivered by cards or draw frames.
  • the flat can serves as a container for receiving the delivered sliver and its transport to a further processing machine of the spinning mill, through which the sliver is removed from the flat can again.
  • flat cans have the advantage that they can be set up and transported more cheaply.
  • the flat can can store more sliver than a corresponding round can.
  • filling and emptying the flat can is problematic compared to the round can, because the quality of the sliver must not be impaired in any way.
  • Known flat cans consist of 2 elongated, parallel side walls and 2 end walls. All walls are arranged perpendicular to the can bottom (EP 344 484).
  • the cross section of the flat can can be a rectangular shape, a rectangular shape with rounded corners (EP 344 484), a rectangular shape with rounded end pieces (DE-OS 40 15 938, Fig. 3A), or an oval shape.
  • the can plate which is known to be movable, also takes on the corresponding shape and is lowered or raised according to the filling status of the flat can. As EP 344484 shows, it was customary for flat cans that the can plate is positioned at the level of the can rim when empty. The positioning is achieved by springs.
  • the pantograph is intended to ensure that the can plate always remains horizontal during its lifting or lowering movement. At high traversing speeds, the can plate still tilts.
  • the flat can When filling with sliver, the flat can is usually moved back and forth under the filling device in the longitudinal direction of the can, so that the sliver is deposited cycloid-shaped on the can plate in the direction from one end wall of the flat can to the other end wall by this traversing movement.
  • several stored layers of sliver form a band column which, by means of its own weight, slowly lowers the can plate up to the stop on the bottom of the can.
  • the can plate has an edge that is angled downwards towards the base (can bottom) and lies with its angled surface except for a small gap on the can walls.
  • the can plate is carried at both ends by a spiral spring, which position the can plate in the unloaded state at the upper edge of the can.
  • the sliver column which consists of a large number of layers of sliver lying on top of each other, their mass increases. Especially when the flat can hits the reversal point of the traversing, the effect occurs that the Sliver column fluctuates due to its inertia in the direction of the respective end face. The entire sliver column fluctuates. This swaying is annoying because it affects the sliver storage that is still running.
  • pantographs which are symmetrically opposite each other on the longitudinal edges of the can plate, cannot prevent the can plate from tending to tilt in the direction of its longitudinal axis at increased traversing speeds. There is a risk of tilting against the wall. With the tilting of the can plate there is also the disadvantage that the single, suddenly loaded spiral spring bends out of its vertical axis.
  • the object of the invention is to achieve proper tape storage when filling an oscillating flat can, which also enables error-free tape removal, and at economical storage speeds, as are possible with round cans.
  • a feature of the invention is that the can plate has a bottom which is lowered in relation to the edge of the can in the empty position.
  • the depth of the depression in relation to the edge of the can corresponds approximately to a distance that two layers of sliver lie on top of each other. This advantageously ensures that sliver loops cannot be moved beyond the edge of the can at the beginning of the filling.
  • the angled edge of the can plate points in the direction of the upper edge of the can rim and lies against the can wall. This angled can edge extends approximately to the upper edge of the can. But it is also possible that the angled edge of the can plate is angled to the base of the pot and is also parallel to the can wall. In such a case, the can plate is held at a stop below the upper edge of the can when the flat can is empty. The stop is positioned on the can wall so that the can plate is held in the lowered position with respect to the edge of the can.
  • An advantageous further embodiment is that the two end sections of the can plate to the middle section as surfaces are inclined. The inclination of these surfaces can be changed and fixed. This embodiment ensures that the contact pressure of the sliver with respect to the turntable is reached earlier in the end sections than in the middle section. This also prevents the slings from moving.
  • Another feature is that the surface of the bottom of the can is structured so that the static friction to the sliver is increased.
  • the advantage is achieved that the first fiber sliver layers on the can plate do not shift during traversing and that the strips are deposited in the desired cycloidal shape over the entire length of the can plate.
  • the side walls of the flat can are corrugated near the top edge or over the entire surface. This corrugation of the side walls results in numerous resistance points, which lead to an additional and thus increased static friction between the fiber band column and the can wall. With this structurally simple measure, it is possible to dampen the fluctuation of the sliver column due to inertia. This also has the advantage of increased flexural rigidity of the side wall.
  • pantograph is arranged between the two spiral springs which are arranged in the region of the end walls.
  • This single pantograph is arranged in the middle of the jug bottom and at the crossing points this pantograph are arranged horizontally struts, which are rotatably mounted in the respective crossing point.
  • the ends of the struts are articulated to the opposite spiral spring. It is thus avoided in any position of the can plate and at high traversing speeds that the spiral spring bends out of its vertical position, as can be caused by fluctuations in the sliver column.
  • the sliver is delivered from the drafting device to the turntable 2.
  • the delivery direction A of the sliver is determined by the arrow.
  • the turntable 2 with its mouth of the tape guide channel 1 rotates stationary and is surrounded by a machine table 3.
  • the sliver leaves the mouth in the turntable 2 and is placed in the flat can 4 in a cycloid form.
  • the storage of the sliver is not shown.
  • Each individual layer of sliver is laid down over the entire width and length of the can plate.
  • the can plate is movably arranged on the can wall. With an increasing number of sliver layers, the can plate must be able to lower towards the can base.
  • the movement of the can plate can be carried out, for example, by an externally controlled lifting mechanism which is arranged under the can plate.
  • the lifting mechanism is in engagement with the can plate.
  • springs are arranged below the can plate, which move depending on the load on the can plate from an initial position (empty flat can) to a lowered position.
  • a filled flat can is transported to a spinning machine for further processing of the belt.
  • the width of a flat can therefore corresponds to the working width of a single spinning station.
  • the flat can 4 can have a rectangular or oval base. The rectangular base with rounded corners is preferred.
  • the flat can 4 is moved back and forth in the longitudinal direction (corresponding to double arrow B) underneath the turntable 2 of a draw frame or card, so that the can plate (not shown in FIG. 1) is covered with sliver over its entire length.
  • the roller conveyor 6 consists of a large number of freely movable rollers which are arranged next to one another and at least correspond to the traversing path.
  • the flat can 4 is oscillated on this roller conveyor 6.
  • the flat can in the upper third (below the lower can bead 5) is gripped on both sides by a traversing bracket 8 and 80, these traversing brackets being connected to a chassis 9.
  • This chassis 9 has a drive, not shown here. The drive is controlled according to a program for filling the flat can 4.
  • the chassis 9 is guided along the rail 10.
  • FIG. 2 documents the can structure known up to now according to EP 344 484, as can be seen within the can wall 13 and below the can plate 14.
  • the flat jug is moved back and forth, ie it changes.
  • the traversing speed is decelerated to the value zero at the reversal point, in order then to accelerate to the traversing speed immediately after passing through the reversing point.
  • the analogous braking and acceleration process takes place.
  • known flat cans after the formation of the first sliver layers for the end-side sling are displaced beyond the edge of the can (see FIG. 2).
  • the can plate 14 in known cans is arranged in one plane with the edge of the can or a little higher, a shifting of the end sling is favored.
  • the pressure of the sliver on the turntable intended by the raised can plate is not sufficient to hold the slings in the area of the end wall of the flat can.
  • This design of the can plate and its arrangement avoids the formation of uniform sliver layers and later hinders the pulling of the sliver from the flat can. There is a risk of the tape breaking.
  • the can plate In order to prevent the first sliver layers from shifting when the flat can is traversed, the can plate is lowered over its entire length relative to the edge of the can (upper can bead 5).
  • Figure 3a shows this fact.
  • the depth of the lowering of the can plate 140 relative to the edge of the can corresponds approximately to a distance that two layers of sliver lie on top of each other.
  • FIG. 5 shows the lowering of a can plate 142, the lowering being forced by the stop 51.
  • the stop 51 is arranged on the inner wall below the upper can bead 5. When the can plate 142 is lifted, it is always arranged below the upper can bead 5 by the stop 51.
  • the stop 51 is not an additional component but can expediently be taken into account when shaping the can wall.
  • an embodiment of the can plate is also feasible in which the two end sections of the can plate are angled in accordance with an inclined plane (FIG. 3b). Slightly spherically curved surfaces can also be used.
  • the length L of each of the two inclined planes corresponds to a deposit radius of the cycloidally laid fiber sliver.
  • the height H of this inclined plane corresponds to a sufficiently small free space between the top of the can and the flat part of the can plate 141, as is present at the start of filling.
  • the inclined planes in the End sections of the can plate have the effect that the first sliver layer and the immediately following layers in this area are pressed onto the machine table 3 earlier and stronger than the remaining rest of the layers in the middle section. The increased pressure of the sliver layers between the can plate 141 and the machine table 3 in the end sections of the can plate prevents the sliver layers from shifting.
  • the can plate has a structured surface 17 (FIG. 3d).
  • a nubbed surface it is also conceivable to have a nubbed surface.
  • Figure 3 c shows a flat can according to the invention in the inner structure.
  • the can plate 140 is carried by a single pantograph 120, which is arranged centrally below the can bottom 140.
  • struts 16, 160 are arranged in a horizontal position, which are rotatably mounted in the respective intersection.
  • the ends of the struts are articulated to the respective opposite ring spring 110, 111.
  • the articulated connection is achieved by the ends of the struts (16, 160) being formed into eyelets (16.1, 16.2; 160.1, 160.2). It is thus avoided in every position of the can plate and at high traversing speeds that the spiral spring bends out of its vertical position, as was previously caused by fluctuations in the fiber band column.
  • the can plate With increasing sliver storage, the can plate is pressed down due to the sliver weight. From the large number of sliver layers, a sliver column is formed, which as a result their inertia tends to fluctuate in the reversal points of the oscillation. The swaying develops forces that act on the can wall and the traversing bracket. In order to dampen this swaying of the sliver during the traversing of the flat can, the side walls near the upper edge (upper can bead 5) are corrugated. However, the entire side surface can also be corrugated.
  • the corrugation 18 is such that, starting in the vicinity of the upper can bead 5, the can 4, wave crests and troughs follow the perpendicular to the can base, ie point in the direction of the lower edge (FIG. 4).
  • wave crests and troughs run parallel to the upper and lower edge of the side wall.
  • the corrugation 18 creates numerous resistance points, which lead to an increased frictional connection between the sliver column and the can wall. The advantage is that fluctuation in the sliver column is reduced.
  • the flat can 4 has an upper can bulge 5 and a lower can bulge 50.
  • Upper and lower can bulges 5, 50 are known to project laterally at the same distance laterally beyond the can wall. This known condition is documented in FIG. 6.
  • a flat can 4 and 40 are located under a spinning station S1 and S2. Each flat can has approximately the width of a spinning station, with a small lateral distance a remaining between the adjacent flat cans 4, 40. Since this side spacing a is small, and to make changing the can easier, guide rails are arranged on the base of the spinning machine, guide rails LS1, LS2 and LS3 are shown in part. These guide rails shorten the lateral distance a in the area of the lower can bead 50.
  • FIG. 7 shows the design of the flat can according to the invention in the region of the lower can bead 50.

Landscapes

  • Coiling Of Filamentary Materials In General (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

The textile fibre strip is loaded into the magazine to be drawn out for spinning etc. A support platform (140) is held inside the magazine on a pantograph (120) and with support springs to press the platform to the dispensing position. The fibre strip is layered onto the platform in an alternating pattern and the weight of the layers forces the platform down. The pantograph is linked to the springs by horizontal stays (16) attached to the springs by swivel joints. The inside walls of the magazine have a vertical ribbed structure to stabilise the movement of the platform and to dampen vibrations. The platform has a lipped edge to locate the first layer.

Description

Die Erfindung betrifft eine Flachkanne zur Aufnahme von Faserband, das von Karden oder Strecken abgeliefert wird. Die Flachkanne dient als Behältnis zur Aufnahme des abgelieferten Faserbandes sowie dessen Transport zu einer Weiterverarbeitungsmaschine der Spinnerei, durch welche das Faserband aus der Flachkanne wieder entnommen wird. Flachkannen haben im Gegensatz zu Rundkannen den Vorteil, daß sie sich platzgünstiger aufstellen und transportieren lassen. Weiterhin kann die Flachkanne mehr Faserband speichern als eine entsprechende Rundkanne. Problematisch ist jedoch gegenüber der Rundkanne das Befüllen und Entleeren der Flachkanne, denn das Faserband darf in keinerlei Weise in seiner Qualität beeinträchtigt werden.The invention relates to a flat can for receiving sliver, which is delivered by cards or draw frames. The flat can serves as a container for receiving the delivered sliver and its transport to a further processing machine of the spinning mill, through which the sliver is removed from the flat can again. In contrast to round cans, flat cans have the advantage that they can be set up and transported more cheaply. Furthermore, the flat can can store more sliver than a corresponding round can. However, filling and emptying the flat can is problematic compared to the round can, because the quality of the sliver must not be impaired in any way.

Bekannte Flachkannen bestehen aus 2 langgestreckten, parallelen Seitenwänden und 2 Stirnwänden. Alle Wände sind lotrecht zum Kannenboden angeordnet (EP 344 484).Known flat cans consist of 2 elongated, parallel side walls and 2 end walls. All walls are arranged perpendicular to the can bottom (EP 344 484).

Der Querschnitt der Flachkanne kann im einzelnen eine rechteckige Form, eine rechteckige Form mit abgerundeten Ecken (EP 344 484), eine rechteckige Form mit abgerundeten Endstücken (DE-OS 40 15 938, Fig. 3A), oder eine ovale Form sein. Die entsprechende Form nimmt auch der Kannenteller an, der bekannterweise beweglich ist und entsprechend dem Füllungszustand der Flachkanne gesenkt oder gehoben wird. Wie EP 344484 zeigt, war es für Flachkannen üblich, daß im Leerzustand der Kannenteller in Höhe des Kannenrandes positioniert ist. Die Positionierung wird durch Federn erreicht. Durch den Pantografen soll erreicht werden, daß der Kannenteller stets horizontal bleibt während seiner Hub- oder Senkbewegung. Bei hohen Changiergeschwindigkeiten kommt es dennoch zu Kippbewegungen des Kannentellers.The cross section of the flat can can be a rectangular shape, a rectangular shape with rounded corners (EP 344 484), a rectangular shape with rounded end pieces (DE-OS 40 15 938, Fig. 3A), or an oval shape. The can plate, which is known to be movable, also takes on the corresponding shape and is lowered or raised according to the filling status of the flat can. As EP 344484 shows, it was customary for flat cans that the can plate is positioned at the level of the can rim when empty. The positioning is achieved by springs. The pantograph is intended to ensure that the can plate always remains horizontal during its lifting or lowering movement. At high traversing speeds, the can plate still tilts.

Beim Befüllen mit Faserband wird üblicherweise die Flachkanne unter der Füllvorrichtung in Kannenlängsrichtung hin- und herbewegt, so daß durch diese Changierbewegung das Faserband zykloidenförmig auf dem Kannenteller in der Richtung von einer Stirnwand der Flachkanne zur anderen Stirnwand abgelegt wird. Mehrere abgelegte Faserbandlagen bilden mit zunehmender Füllung eine Bandsäule, die mittels ihres Eigengewichtes den Kannenteller langsam bis zum Anschlag am Kannenboden senkt. Der Kannenteller weist wie auch bei anderen Kannen üblich einen nach unten zur Standfläche (Kannenboden) abgewinkelten Rand auf und liegt mit seiner abgewinkelten Fläche bis auf einen kleinen Spalt an den Kannenwänden an. Nach dem Stand der Technik (EP 344 484) wird der Kannenteller an seinen beiden Enden von je einer Spiralfeder getragen, die den Kannenteller im unbelasteten Zustand beim oberen Kannenrand positionieren.When filling with sliver, the flat can is usually moved back and forth under the filling device in the longitudinal direction of the can, so that the sliver is deposited cycloid-shaped on the can plate in the direction from one end wall of the flat can to the other end wall by this traversing movement. With increasing filling, several stored layers of sliver form a band column which, by means of its own weight, slowly lowers the can plate up to the stop on the bottom of the can. As with other cans, the can plate has an edge that is angled downwards towards the base (can bottom) and lies with its angled surface except for a small gap on the can walls. According to the prior art (EP 344 484), the can plate is carried at both ends by a spiral spring, which position the can plate in the unloaded state at the upper edge of the can.

Bereits bei der Bildung der ersten Faserbandlage auf dem Kannenteller kommt es zu einer deutlichen Verlagerung der der Stirnwand am nächsten befindlichen Bandschlinge in Richtung Kannenstirnseite. Diese örtliche Verlagerung resultiert aus den durch die Umkehr der Changierbewegung auftretenden Brems- und Beschleunigungskräften. Diese unkontrollierte Verlagerung des Faserbandes führt zu dem Nachteil, daß insbesondere während der Bildung der ersten Lage die Bandschlinge über den Kannenrand an der Stirnseite gedrückt wird. Diese Verlagerung ist um so stärker, je größer die Liefergeschwindigkeiten sind, so daß die Verwendung von Flachkannen die Produktionsgeschwindigkeit der Karde oder Strecke beeinträchtigt. Dies betrifft auch die nachfolgenden Lagen Faserband, wenn auch die Verlagerung infolge wachsender Haftreibung zwischen den Lagen gedämpft wird.Already when the first sliver layer is formed on the can plate, there is a clear shift of the sling closest to the front wall towards the can end. This local shift results from those caused by repentance the braking and acceleration forces occurring in the traversing movement. This uncontrolled displacement of the sliver leads to the disadvantage that the sling is pressed over the edge of the can on the front side, in particular during the formation of the first layer. This shift is greater the higher the delivery speeds, so that the use of flat cans affects the production speed of the card or draw frame. This also applies to the subsequent layers of sliver, even if the shift is dampened due to increasing static friction between the layers.

Diese Verlagerung wirkt sich nicht nur nachteilig auf die Qualität der Faserbänder an der Kannenstirnseite aus, sondern die gestörte Faserbandablage führt auch zu Schwierigkeiten beim späteren Abzug des Faserbandes aus der Flachkanne.This shift not only has a negative effect on the quality of the slivers on the can end, but the disturbed sliver storage also leads to difficulties when the sliver is later removed from the flat can.

Die Positionierung des Kannentellers nach EP 457 099 (Spalte 7, 41.-44. Zeile) geht sogar davon aus, daß der Kannenteller noch etwas höher als der obere Kannenrand zu positionieren sei, nämlich bis in die Nähe der Unterkante des Drehtellers der Karde oder Strecke. So erzielt man bereits für die ersten Lagen des Faserbandes einen erforderlichen Anpreßdruck. Das hat jedoch den Nachteil, daß der Kannenteller der Flachkanne am Drehteller unmittelbar zu Füllungsbeginn schleift. Eine verschlissene Drehtelleroberfläche beeinträchtigt das abzulegende Faserband.The positioning of the can plate according to EP 457 099 (column 7, lines 41-44) even assumes that the can plate should be positioned somewhat higher than the upper edge of the can, namely up to the vicinity of the lower edge of the rotary card or Route. In this way, a necessary contact pressure is achieved for the first layers of the sliver. However, this has the disadvantage that the can plate of the flat can grinds on the turntable immediately at the start of filling. A worn turntable surface affects the sliver to be removed.

Mit wachsender Höhe der Faserbandsäule, die aus einer Vielzahl von aufeinanderliegenden Faserbandlagen besteht, wächst deren Masse. Insbesondere mit Auftreffen der Flachkanne an den jeweiligen Umkehrpunkt der Changierung, tritt der Effekt ein, daß die Faserbandsäule infolge ihrer Massenträgheit in Richtung der jeweiligen Stirnseite schwankt. Dabei schwankt die Faserbandsäule in ihrer Gesamtheit. Dieses Schwanken ist störend, da es die noch laufende Faserbandablage beeinflußt. Das führt nicht nur zu Dichteveränderungen des Faserbandes in Nähe der Stirnseite gegenüber anderen Ablagepositionen, sondern es kann auch vorkommen, daß Faserbandschlingen an der Stirnseite durch das Schwanken der Faserbandsäule in den momentanen Spalt zwischen Faserbandsäule und Kannenwand rutschen und verklemmt werden, was bei späterem Bandabzug die Bandbruchgefahr erhöht. Das Schwanken der Faserbandsäule verursacht weiterhin ein unerwünschtes Kraftmoment auf die Kannenwand und den Kannenteller.With increasing height of the sliver column, which consists of a large number of layers of sliver lying on top of each other, their mass increases. Especially when the flat can hits the reversal point of the traversing, the effect occurs that the Sliver column fluctuates due to its inertia in the direction of the respective end face. The entire sliver column fluctuates. This swaying is annoying because it affects the sliver storage that is still running. This not only leads to changes in the density of the sliver near the front side compared to other storage positions, but it can also happen that sliver loops on the front side slip and become jammed in the current gap between the sliver column and the can wall, which is the case when the sliver is pulled off later Belt breakage risk increased. The swaying of the sliver continues to cause an undesirable moment of force on the can wall and the can plate.

Um diesem Nachteil entgegenzuwirken, wird nach EP 344 484, Figur 1 und 2 vorgeschlagen, an den Innenseiten der länglichen Seitenwände jeweils einen Pantografen (auch Scherengitter oder Nürnberger Schere genannt) anzuordnen, die eine Parallelführung des Kannentellers zur Wandung sichern sollen. Das ist jedoch ein erhöhter konstruktiver Aufwand, der eine Schieflage des Kannentellers bei hohen Changiergeschwindigkeiten der Flachkanne nicht sicher vermeidet.In order to counteract this disadvantage, it is proposed according to EP 344 484, FIGS. 1 and 2, to arrange a pantograph (also called scissor lattice or Nuremberg scissors) on the inner sides of the elongated side walls, which are intended to ensure parallel guidance of the can plate to the wall. However, this is an increased design effort that does not reliably avoid an inclined position of the can plate at high traversing speeds of the flat can.

Die sich an den Längsrändern des Kannentellers symmetrisch gegenüberliegenden Pantografen, können nicht verhindern, daß der Kannenteller bei erhöhten Changiergeschwindigkeiten zum Kippen in Richtung seiner Längsachse neigt. Es besteht die Gefahr des Verkantens gegenüber der Wandung. Mit dem Kippen des Kannentellers besteht aber auch der Nachteil, daß die einzelne schlagartig belastete Spiralfeder aus ihrer Vertikalachse ausknickt.The pantographs, which are symmetrically opposite each other on the longitudinal edges of the can plate, cannot prevent the can plate from tending to tilt in the direction of its longitudinal axis at increased traversing speeds. There is a risk of tilting against the wall. With the tilting of the can plate there is also the disadvantage that the single, suddenly loaded spiral spring bends out of its vertical axis.

Die genannten Probleme haben bisher eine Einführung der Flachkanne in die Praxis verhindert, weil Liefergeschwindigkeiten wie sie bei der Rundkanne üblich sind, nicht realisiert werden konnten.The problems mentioned have hitherto prevented the flat can from being put into practice because delivery speeds as are customary with the round can could not be achieved.

Aufgabe der Erfindung ist es, beim Befüllen einer changierenden Flachkanne eine ordnungsgemäße Bandablage zu erzielen, die auch eine fehlerfreie Bandentnahme ermöglicht und zwar bei wirtschaftlichen Ablagegeschwindigkeiten, wie sie bei Rundkannen möglich sind.The object of the invention is to achieve proper tape storage when filling an oscillating flat can, which also enables error-free tape removal, and at economical storage speeds, as are possible with round cans.

Merkmal der Erfindung ist, daß der Kannenteller einen Boden aufweist, der gegenüber dem Kannenrand in der Leerstellung abgesenkt ist. Die Tiefe der Absenkung gegenüber dem Kannenrand entspricht etwa einer Strecke, die zwei aufeinander liegende Faserbandlagen einnehmen. Dadurch wird vorteilhafterweise erreicht, daß Faserbandschlingen zu Füllungsbeginn nicht über den Kannenrand hinaus verlagert werden können. Der abgewinkelte Rand des Kannentellers zeigt in Richtung Oberkante des Kannenrandes und liegt an der Kannenwandung an. Dieser nach oben abgewinkelte Kannenrand reicht etwa bis zum oberen Kannenrand. Es ist aber auch machbar, daß der abgewinkelte Rand des Kannentellers zur Standfläche der Kanne abgewinkelt wird und ebenfalls parallel zur Kannenwandung liegt. In einem solchen Fall wird der Kannenteller bei Leerstellung der Flachkanne an einem Anschlag unterhalb des oberen Kannenrandes gehalten. Der Anschlag ist so an der Kannenwandung positioniert, daß der Kannenteller gegenüber dem Kannenrand in der abgesenkten Position gehalten wird.A feature of the invention is that the can plate has a bottom which is lowered in relation to the edge of the can in the empty position. The depth of the depression in relation to the edge of the can corresponds approximately to a distance that two layers of sliver lie on top of each other. This advantageously ensures that sliver loops cannot be moved beyond the edge of the can at the beginning of the filling. The angled edge of the can plate points in the direction of the upper edge of the can rim and lies against the can wall. This angled can edge extends approximately to the upper edge of the can. But it is also possible that the angled edge of the can plate is angled to the base of the pot and is also parallel to the can wall. In such a case, the can plate is held at a stop below the upper edge of the can when the flat can is empty. The stop is positioned on the can wall so that the can plate is held in the lowered position with respect to the edge of the can.

Eine vorteilhafte weitere Ausführungsform ist, daß die beiden Endabschnitte des Kannentellers zum Mittelabschnitt als Flächen geneigt sind. Die Neigung dieser Flächen kann veränderbar und fixierbar sein. Durch diese Ausführungsform wird erreicht, daß der Anpressdruck des Faserbandes gegenüber dem Drehteller in den Endabschnitten frühzeitiger erreicht wird als im Mittelabschnitt. Ein Verlagern der Bandschlingen wird dadurch ebenso vermieden.An advantageous further embodiment is that the two end sections of the can plate to the middle section as surfaces are inclined. The inclination of these surfaces can be changed and fixed. This embodiment ensures that the contact pressure of the sliver with respect to the turntable is reached earlier in the end sections than in the middle section. This also prevents the slings from moving.

Ein weiteres Merkmal ist, daß die Oberfläche des Kannenbodens strukturiert ist, so daß die Haftreibung zum Faserband erhöht ist.Another feature is that the surface of the bottom of the can is structured so that the static friction to the sliver is increased.

Mit diesen technischen Merkmalen wird der Vorteil erreicht, daß sich beim Befüllen die ersten Faserbandlagen auf dem Kannenteller beim Changieren nicht verschieben und eine saubere Ablage der Bänder in der gewünschten zykloiden Form über die gesamte Länge des Kannentellers erfolgt.With these technical features, the advantage is achieved that the first fiber sliver layers on the can plate do not shift during traversing and that the strips are deposited in the desired cycloidal shape over the entire length of the can plate.

Merkmal der Erfindung ist weiterhin, daß die Seitenwände der Flachkanne in Nähe der Oberkante oder über die gesamte Fläche gewellt sind. Es ergeben sich durch diese Wellung der Seitenwände zahlreiche Widerstandspunkte, die zu einer zusätzlichen und somit erhöhten Haftreibung zwischen Faserbandsäule und Kannenwandung führen. Mit dieser konstruktiv einfachen Maßnahme gelingt es, das Schwanken der Faserbandsäule infolge Massenträgheit zu dämpfen. Weiterhin bringt dies den Vorteil einer erhöhten Biegesteifigkeit der Seitenwandung.Another feature of the invention is that the side walls of the flat can are corrugated near the top edge or over the entire surface. This corrugation of the side walls results in numerous resistance points, which lead to an additional and thus increased static friction between the fiber band column and the can wall. With this structurally simple measure, it is possible to dampen the fluctuation of the sliver column due to inertia. This also has the advantage of increased flexural rigidity of the side wall.

Ein weiteres Erfindungsmerkmal der Flachkanne ist, daß zwischen beiden Spiralfedern, die im Bereich der Stirnwandungen angeordnet sind, nur noch ein Pantograf angeordnet ist. Dieser einzelne Pantograf ist mittig zum Kannenboden angeordnet und in den Kreuzungspunkten dieses Pantografen sind horizontal Streben angeordnet, die drehbar im jeweiligen Kreuzungspunkt gelagert sind. Die Enden der Streben sind mit der jeweils gegenüberliegenden Spiralfeder gelenkig verbunden. Es wird somit in jeder Lage des Kannentellers und bei hohen Changiergeschwindigkeiten vermieden, daß ein Ausknicken der Spiralfeder aus ihrer vertikalen Lage erfolgt wie es durch Schwanken der Faserbandsäule hervorgerufen werden kann.Another feature of the flat can according to the invention is that only one pantograph is arranged between the two spiral springs which are arranged in the region of the end walls. This single pantograph is arranged in the middle of the jug bottom and at the crossing points this pantograph are arranged horizontally struts, which are rotatably mounted in the respective crossing point. The ends of the struts are articulated to the opposite spiral spring. It is thus avoided in any position of the can plate and at high traversing speeds that the spiral spring bends out of its vertical position, as can be caused by fluctuations in the sliver column.

Die Erfindung wird an einem Ausführungsbeispiel anhand der

Figur 1
Flachkanne in einer Changiervorrichtung einer Strecke
Figur 2
Lagerung des Faserbandes im Bereich der Stirnwandung bei bekannten Flachkannen
Figur 3 a
Seitenansicht des Kannentellers einer Flachkanne
Figur 3 b
Seitenansicht einer weiteren Ausführungsform des Kannentellers einer Flachkanne
Figur 3 c
Aufbau einer Flachkanne
Figur 3 d
Draufsicht auf den Kannenteller einer Flachkanne
Figur 4
Wandung einer Flachkanne
Figur 5
Wandung einer Flachkanne mit Anschlag für Kannenteller
Figur 6
Flachkanne mit bekannter, unterer Kannenwulst
Figur 7
Flachkanne mit neuer Anordnung der unteren Kannenwulst
dargestellt.The invention is based on an embodiment of the
Figure 1
Flat can in a traverse device of a stretch
Figure 2
Storage of the sliver in the area of the end wall in known flat cans
Figure 3 a
Side view of the can plate of a flat jug
Figure 3 b
Side view of another embodiment of the can plate of a flat can
Figure 3 c
Structure of a flat can
Figure 3 d
Top view of the can plate of a flat jug
Figure 4
Wall of a flat jug
Figure 5
Wall of a flat can with a stop for can plates
Figure 6
Flat jug with known, lower jug bead
Figure 7
Flat can with a new arrangement of the lower can bulge
shown.

Nach Fig.1 wird das Faserband vom Streckwerk zum Drehteller 2 geliefert. Die Lieferrichtung A des Faserbandes ist durch den Pfeil festgelegt. Der Drehteller 2 mit seiner Mündung des Bandführungskanal 1 rotiert stationär und wird von einem Maschinentisch 3 umgeben. Das Faserband verläßt die Mündung im Drehteller 2 und wird in der Flachkanne 4 in zykloider Form abgelegt. Die Ablage des Faserbandes ist nicht dargestellt. Jede einzelne Lage Faserband wird über die gesamte Breite und Länge des Kannentellers abgelegt. Der Kannenteller ist an der Kannenwandung beweglich angeordnet. Mit zunehmender Anzahl von Faserbandlagen muß sich der Kannenteller in Richtung Kannenstandfläche senken können.
Die Bewegung des Kannentellers kann beispielsweise durch einen extern gesteuerten Hubmechanismus vollzogen werden, der unter dem Kannenteller angeordnet ist. Der Hubmechanismus ist dabei im Eingriff mit dem Kannenteller.
Eine andere Möglichkeit ist, daß unterhalb des Kannentellers Federn angeordnet sind, die sich in Abhängigkeit von der Belastung des Kannentellers aus einer Ausgangsposition (leere Flachkanne) in eine abgesenkte Position begeben.According to Fig.1, the sliver is delivered from the drafting device to the turntable 2. The delivery direction A of the sliver is determined by the arrow. The turntable 2 with its mouth of the tape guide channel 1 rotates stationary and is surrounded by a machine table 3. The sliver leaves the mouth in the turntable 2 and is placed in the flat can 4 in a cycloid form. The storage of the sliver is not shown. Each individual layer of sliver is laid down over the entire width and length of the can plate. The can plate is movably arranged on the can wall. With an increasing number of sliver layers, the can plate must be able to lower towards the can base.
The movement of the can plate can be carried out, for example, by an externally controlled lifting mechanism which is arranged under the can plate. The lifting mechanism is in engagement with the can plate.
Another possibility is that springs are arranged below the can plate, which move depending on the load on the can plate from an initial position (empty flat can) to a lowered position.

Eine gefüllte Flachkanne wird zur Weiterverarbeitung des Bandes an eine Spinnmaschine transportiert. Die Breite einer Flachkanne entspricht deshalb der Arbeitsbreite einer einzelnen Spinnstelle. Die Flachkanne 4 kann eine rechteckige oder ovale Grundfläche besitzen. Bevorzugt wird die rechteckige Grundfläche mit abgerundeten Ecken. Die Flachkanne 4 wird unterhalb des Drehtellers 2 einer Strecke oder Karde in Längsrichtung (entsprechend Doppelpfeil B) hin- und herbewegt (changiert), so daß der Kannenteller (in Figur 1 nicht dargestellt) über seine gesamte Länge mit Faserband belegt wird. Um die Flachkanne 4 changieren zu können, steht diese mit ihrer unteren Kannenwulst 50 auf einer Rollenbahn 6. Die Rollenbahn 6 besteht aus einer Vielzahl frei beweglicher Rollen, die nebeneinander angeordnet sind und mindestens dem Changierweg entsprechen. Auf dieser Rollenbahn 6 wird die Flachkanne 4 changiert. An der seitlichen Begrenzung der Rollenbahn 6 befinden sich beidseitig im Abstand zueinander Führungsrollen 7 und 70, (in der Regel mehr als zwei pro Seite), die der Flachkanne 4 im Standbereich eine Führung geben. Für den Zeitraum der Changierung wird die Flachkanne im oberen Drittel (unterhalb der unteren Kannenwulst 5) beidseitig durch je eine Changierhalterung 8 und 80 erfaßt, wobei diese Changierhalterungen mit einem Fahrgestell 9 in Verbindung stehen. Dieses Fahrgestell 9 besitzt einen hier nicht dargestellten Antrieb. Der Antrieb wird entsprechend einem Programm zur Befüllung der Flachkanne 4 gesteuert. Das Fahrgestell 9 wird entlang der Schiene 10 geführt.A filled flat can is transported to a spinning machine for further processing of the belt. The width of a flat can therefore corresponds to the working width of a single spinning station. The flat can 4 can have a rectangular or oval base. The rectangular base with rounded corners is preferred. The flat can 4 is moved back and forth in the longitudinal direction (corresponding to double arrow B) underneath the turntable 2 of a draw frame or card, so that the can plate (not shown in FIG. 1) is covered with sliver over its entire length. In order to be able to oscillate the flat can 4, it stands with its lower can bulge 50 on a roller conveyor 6. The roller conveyor 6 consists of a large number of freely movable rollers which are arranged next to one another and at least correspond to the traversing path. The flat can 4 is oscillated on this roller conveyor 6. On the lateral boundary of the roller conveyor 6 there are guide rollers 7 and 70 (generally more than two per side) at a distance from one another, which give the flat can 4 a guide in the standing area. For the period of traversing, the flat can in the upper third (below the lower can bead 5) is gripped on both sides by a traversing bracket 8 and 80, these traversing brackets being connected to a chassis 9. This chassis 9 has a drive, not shown here. The drive is controlled according to a program for filling the flat can 4. The chassis 9 is guided along the rail 10.

Figur 2 dokumentiert den bisher nach EP 344 484 bekannten Kannenaufbau wie er sich innerhalb der Kannenwandung 13 und unterhalb des Kannentellers 14 zeigt. Es sind je eine Spiralfeder 11 und an den Längsseiten je ein Pantograf 12 angeordnet.
Die Flachkanne wird hin- und herbewegt, d.h. changiert. Die Changiergeschwindigkeit im Umkehrpunkt auf den Wert Null abgebremst, um dann nach Durchlaufen des Umkehrpunktes unmittelbar auf Changiergeschwindigkeit zu beschleunigen. Im gegenüberliegenden Umkehrpunkt erfolgt der analoge Vorgang des Bremsens und Beschleunigens. Infolge des Bremsens und Beschleunigens kommt es bei bekannten Flachkannen nach Bildung der ersten Faserbandlagen für die stirnseitige Bandschlinge zu einem Verlagern derselben über den Kannenrand hinaus (s. Fig.2). Das ist sehr ungünstig, insbesondere im Hochgeschwindigkeitsbereich des Changierens. Da gemäß Figur 2 bei bekannten Kannen der Kannenteller 14 in einer Ebene mit dem Kannenrand oder noch etwas höher angeordnet ist, wird ein Verlagern der stirnseitigen Bandschlinge begünstigt. In der Praxis hat es sich gezeigt, daß der durch den erhöhten Kannenteller beabsichtigte Anpressdurck des Faserbandes an den Drehteller nicht ausreicht, um die Bandschlingen im Bereich der Stirnwandung der Flachkanne zu halten.
Diese Gestaltung des Kannentellers und seine Anordnung (Fig. 2) vermeidet die Bildung gleichmäßiger Faserbandlagen und behindert später das Abziehen des Faserbandes aus der Flachkanne. Es besteht die Gefahr des Bandbruches.FIG. 2 documents the can structure known up to now according to EP 344 484, as can be seen within the can wall 13 and below the can plate 14. There are one coil spring 11 and each one pantograph 12 is arranged on the long sides.
The flat jug is moved back and forth, ie it changes. The traversing speed is decelerated to the value zero at the reversal point, in order then to accelerate to the traversing speed immediately after passing through the reversing point. In the opposite reversal point, the analogous braking and acceleration process takes place. As a result of the braking and acceleration, known flat cans after the formation of the first sliver layers for the end-side sling are displaced beyond the edge of the can (see FIG. 2). This is very unfavorable, especially in the high-speed area of traversing. Since, according to FIG. 2, the can plate 14 in known cans is arranged in one plane with the edge of the can or a little higher, a shifting of the end sling is favored. In practice, it has been shown that the pressure of the sliver on the turntable intended by the raised can plate is not sufficient to hold the slings in the area of the end wall of the flat can.
This design of the can plate and its arrangement (Fig. 2) avoids the formation of uniform sliver layers and later hinders the pulling of the sliver from the flat can. There is a risk of the tape breaking.

Um das Verlagern der ersten Faserbandlagen beim Changieren der Flachkanne zu vermeiden, wird der Kannenteller über seine gesamte Länge gegenüber dem Kannenrand (oberer Kannenwulst 5) abgesenkt. Diesen Sachverhalt zeigt Figur 3a. Die Tiefe der Absenkung des Kannentellers 140 gegenüber dem Kannenrand entspricht etwa einer Strecke, die zwei aufeinanderliegende Faserbandlagen einnehmen.In order to prevent the first sliver layers from shifting when the flat can is traversed, the can plate is lowered over its entire length relative to the edge of the can (upper can bead 5). Figure 3a shows this fact. The depth of the lowering of the can plate 140 relative to the edge of the can corresponds approximately to a distance that two layers of sliver lie on top of each other.

Mit dieser Absenkung wird erreicht, daß die ersten beiden Bandlagen nicht über den Kannenrand gedrückt werden können, sondern durch die Wandung in ihrer Ablageposition gehalten werden. Da zwischen Kannenteller und Kannenwandung aus Gründen der Beweglichkeit des Kannentellers ein enger Spalt gehalten werden muß, könnte es zum Klemmen von Teilen der Faserbandschlinge kommen. Um ein solches Klemmen zu vermeiden, wird vorgeschlagen, den Kannenteller 140 nach oben abzuwinkeln. Die abgewinkelte Fläche bildet einen Rand. Der Rand ist parallel zur Wandung der Flachkanne und endet kurz unterhalb des oberen Kannenrandes (Fig. 3a).This lowering ensures that the first two belt layers cannot be pressed over the edge of the can, but are held in their storage position by the wall. Since a narrow gap must be kept between the can plate and the can wall for reasons of mobility of the can plate, parts of the sliver could become jammed. In order to avoid such jamming, it is proposed to angle the can plate 140 upwards. The angled surface forms an edge. The edge is parallel to the wall of the flat can and ends just below the upper edge of the can (Fig. 3a).

Figur 5 zeigt die Absenkung eines Kannentellers 142, wobei die Absenkung erzwungen wird durch den Anschlag 51. Der Anschlag 51 ist an der Innenwandung unterhalb der oberen Kannenwulst 5 angeordnet. Beim Hub des Kannentellers 142 wird dieser stets durch den Anschlag 51 unterhalb der oberen Kannenwulst 5 angeordnet. Der Anschlag 51 ist kein zusätzliches Bauteil sondern kann zweckmäßigerweise bei der Formgebung der Kannenwandung berücksichtigt werden.FIG. 5 shows the lowering of a can plate 142, the lowering being forced by the stop 51. The stop 51 is arranged on the inner wall below the upper can bead 5. When the can plate 142 is lifted, it is always arranged below the upper can bead 5 by the stop 51. The stop 51 is not an additional component but can expediently be taken into account when shaping the can wall.

Es ist aber auch eine Ausführungsform des Kannentellers machbar, bei dem die beiden Endabschnitte des Kannentellers einsprechend einer schiefen Ebene angewinkelt sind (Fig. 3b). Es können aber auch leicht sphärisch gewölbte Flächen verwendet werden.
Jede der beiden schiefen Ebenen entspricht in ihrer Länge L einem Ablageradius des zykloid abgelegten Faserbandes. Die Höhe H dieser schiefen Ebene entspricht einem genügend kleinen Freiraum zwischen Kannenoberkante und dem ebenen Teil des Kannentellers 141 wie er bei Füllbeginn vorliegt. Die schiefen Ebenen in den Endabschnitten des Kannentellers bewirken, daß die erste Faserbandlage und die unmittelbar folgenden in diesem Bereich frühzeitiger und stärker an den Maschinentisch 3 gepreßt werden, als der verbleibende Rest der Lagen im Mittelabschnitt. Die erhöhte Pressung der Faserbandlagen zwischen Kannenteller 141 und Maschinentisch 3 in den Endabschpitten des Kannentellers verhindert ein Verlagern der Faserbandlagen.However, an embodiment of the can plate is also feasible in which the two end sections of the can plate are angled in accordance with an inclined plane (FIG. 3b). Slightly spherically curved surfaces can also be used.
The length L of each of the two inclined planes corresponds to a deposit radius of the cycloidally laid fiber sliver. The height H of this inclined plane corresponds to a sufficiently small free space between the top of the can and the flat part of the can plate 141, as is present at the start of filling. The inclined planes in the End sections of the can plate have the effect that the first sliver layer and the immediately following layers in this area are pressed onto the machine table 3 earlier and stronger than the remaining rest of the layers in the middle section. The increased pressure of the sliver layers between the can plate 141 and the machine table 3 in the end sections of the can plate prevents the sliver layers from shifting.

Um die Haftung zwischen Faserbandlagen und Kannenteller weiter zu erhöhen, erhält der Kannenteller eine strukturierte Oberfläche 17 (Fig. 3d). Es ist aber auch eine Ausführung einer genoppten Oberfläche denkbar.In order to further increase the adhesion between the sliver layers and the can plate, the can plate has a structured surface 17 (FIG. 3d). However, it is also conceivable to have a nubbed surface.

Figur 3 c zeigt eine erfindungsgemäße Flachkanne im inneren Aufbau. Der Kannenteller 140 wird von einem einzelnen Pantografen 120 getragen, der mittig unterhalb des Kannenbodens 140 angeordnet ist. In den Kreuzungspunkten des Pantografen sind in horizontaler Lage Streben 16, 160 angeordnet, die drehbar im jeweiligen Kreuzungspunkt gelagert sind. Die Enden der Streben sind mit der jeweils gegenüberliegenden Ringfeder 110, 111 gelenkig verbunden. Die gelenkige Verbindung wird erreicht indem die Enden der Streben (16, 160) zu Ösen (16.1, 16.2; 160.1, 160.2) ausgebildet sind. Es wird somit in jeder Lage des Kannentellers und bei hohen Changiergeschwindigkeiten vermieden, daß ein Ausknicken der Spiralfeder aus ihrer vertikalen Lage erfolgt wie es bisher durch Schwanken der Faserbandsäule hervorgerufen wird.Figure 3 c shows a flat can according to the invention in the inner structure. The can plate 140 is carried by a single pantograph 120, which is arranged centrally below the can bottom 140. In the intersection of the pantograph, struts 16, 160 are arranged in a horizontal position, which are rotatably mounted in the respective intersection. The ends of the struts are articulated to the respective opposite ring spring 110, 111. The articulated connection is achieved by the ends of the struts (16, 160) being formed into eyelets (16.1, 16.2; 160.1, 160.2). It is thus avoided in every position of the can plate and at high traversing speeds that the spiral spring bends out of its vertical position, as was previously caused by fluctuations in the fiber band column.

Mit zunehmender Ablage von Faserband wird infolge des Faserbandgewichtes der Kannenteller nach unten gedrückt. Es bildet sich aus der Vielzahl von Faserbandlagen eine Faserbandsäule, die infolge ihrer Massenträgheit in den Umkehrpunkten der Changierung zum Schwanken neigt. Das Schwanken entwickelt Kräfte, die auf die Kannenwandung und die Changierhalterung wirken. Um dieses Schwanken der Faserbandsäule während des Changierens der Flachkanne zu dämpfen, werden die Seitenwände in Nähe der Oberkannte (obere Kannenwulst 5) gewellt. Es kann aber auch die gesamte Seitenfläche gewellt werden. Die Wellung 18 erfolgt so, daß beginnend in Nähe der oberen Kannenwulst 5 der Kanne 4, Wellenberge und -täler der Lotrechten zur Kannenstandfläche folgen, d.h. in Richtung Unterkante zeigen (Figur 4). Es ist aber auch eine andere Ausführung machbar, d.h. Wellenberge und -täler führen parallel zur Ober- und Unterkante der Seitenwand. Die Wellung 18 schafft zahlreiche Widerstandspunkte, die zu einem erhöhten Kraftschluß zwischen Faserbandsäule und Kannenwandung führen. Der Vorteil ist, daß ein Schwanken der Faserbandsäule reduziert wird.With increasing sliver storage, the can plate is pressed down due to the sliver weight. From the large number of sliver layers, a sliver column is formed, which as a result their inertia tends to fluctuate in the reversal points of the oscillation. The swaying develops forces that act on the can wall and the traversing bracket. In order to dampen this swaying of the sliver during the traversing of the flat can, the side walls near the upper edge (upper can bead 5) are corrugated. However, the entire side surface can also be corrugated. The corrugation 18 is such that, starting in the vicinity of the upper can bead 5, the can 4, wave crests and troughs follow the perpendicular to the can base, ie point in the direction of the lower edge (FIG. 4). However, a different design is also feasible, ie wave crests and troughs run parallel to the upper and lower edge of the side wall. The corrugation 18 creates numerous resistance points, which lead to an increased frictional connection between the sliver column and the can wall. The advantage is that fluctuation in the sliver column is reduced.

Wie bereits dargestellt, besitzt die Flachkanne 4 eine obere Kannenwulst 5 und eine untere Kannenwulst 50. Obere und untere Kannenwulst 5, 50 ragen bekannterweise im gleichen Abstand seitlich über die Kannenwandung hinaus. Diesen bekannten Zustand dokumentiert Figur 6. Auszugsweise stehen je eine Flachkanne 4 und 40 unter je einer Spinnstelle S1 und S2. Jede Flachkanne hat etwa die Breite einer Spinnstelle, wobei ein kleiner Seitenabstand a zwischen den benachbarten Flachkannen 4, 40 bleibt. Da dieser Seitenabstand a gering ist, und um den Kannenwechsel zu erleichtern, sind auf der Standfläche der Spinnmaschine Leitschienen angeordnet, auszugsweise Leitschiene LS1, LS2 und LS3 dargestellt. Diese Leitschienen verkürzen den Seitenabstand a im Bereich der unteren Kannenwulst 50. Es kann beim Kannenwechsel zum Verklemmen der Flachkanne kommen, da die Toleranz des Seitenabstandes a zu eng ist, was zu Verzögerungen des Kannenwechsels führen kann. Aus diesem Grund wird die Flachkanne so gestaltet, daß die untere Kannenwulst 50 nach innen versetzt wird. Die Folge ist, daß die Flachkanne an der oberen Kannenwulst 5 breiter ist, als an der unteren Kannenwulst 50. Zwischen Leitschiene und unterer Kannenwulst wird durch diese Maßnahme etwa ein Abstand gewonnen, der einem halben Seitenabstand a entspricht. Damit wird es möglich, die Toleranz im Bereich der Leitschienen zu erhöhen, so daß ein Verklemmen der Flachkanne beim Wechsel vermieden wird. Figur 7 zeigt die erfindungsgemäße Gestaltung der Flachkanne im Bereich der unteren Kannenwulst 50.As already shown, the flat can 4 has an upper can bulge 5 and a lower can bulge 50. Upper and lower can bulges 5, 50 are known to project laterally at the same distance laterally beyond the can wall. This known condition is documented in FIG. 6. In excerpts, a flat can 4 and 40 are located under a spinning station S1 and S2. Each flat can has approximately the width of a spinning station, with a small lateral distance a remaining between the adjacent flat cans 4, 40. Since this side spacing a is small, and to make changing the can easier, guide rails are arranged on the base of the spinning machine, guide rails LS1, LS2 and LS3 are shown in part. These guide rails shorten the lateral distance a in the area of the lower can bead 50. It can jam when changing the can the flat can come because the tolerance of the side spacing a is too narrow, which can lead to delays in changing the can. For this reason, the flat can is designed so that the lower can bead 50 is displaced inwards. The result is that the flat can on the upper can bead 5 is wider than on the lower can bead 50. Between the guide rail and the lower can bead, a distance is obtained by this measure which corresponds to half a side distance a. This makes it possible to increase the tolerance in the area of the guide rails, so that jamming of the flat can when changing is avoided. FIG. 7 shows the design of the flat can according to the invention in the region of the lower can bead 50.

Claims (5)

Flachkanne zur Aufnahme von textilem Faserband, wobei die Wandungen der Flachkanne aus zwei langgestreckten Seitenwänden und zwei Stirnwänden gebildet sind, die eine im wesentlichen rechteckförmige Grundfläche umschließen und die Flachkanne eine obere Kannenwulst (5) und eine untere Kannenwulst (50) hat, wobei die Breite der Flachkanne von der Kannenwulst einer Seitenwandung zur Kannenwulst der gegenüberliegenden Seitenwandung bestimmt ist, dadurch gekennzeichnet daß bei parallel angeordneten Seitenwänden die untere Kannenwulst (50) gegenüber der oberen Kannenwulst (5) versetzt ist, so daß die Flachkanne an der oberen Kannenwulst (5) breiter ist, als an der unteren Kannenwulst (50).Flat jug for receiving textile sliver, the walls of the flat jug being formed from two elongated side walls and two end walls, which enclose a substantially rectangular base area and the flat jug has an upper jug bead (5) and a lower jug bead (50), the width the flat can from the can bulge of one side wall to the can bulge of the opposite side wall is determined, characterized in that in the case of side walls arranged in parallel, the lower can bulge (50) is offset from the upper can bulge (5), so that the flat can on the upper can bulge (5) is wider than on the lower can bulge (50). Flachkanne nach Anspruch 1, dadurch gekennzeichnet, daß die untere Kannenwulst (50) seitlich im wesentlichen nicht über die Kannenwandung hinaus angeordnet ist.Flat can according to claim 1, characterized in that the lower can bead (50) is essentially not arranged laterally beyond the can wall. Flachkanne, gemäß einem oder beiden der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Seitenwände der Flachkanne in Nähe ihrer oberen Kannenwulst (5) gewellt sind.Flat can, according to one or both of claims 1 and 2, characterized in that the side walls of the flat can are corrugated in the vicinity of its upper can bead (5). Flachkanne, gemäß einem oder beiden der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Seitenwände der Flachkanne von der oberen Kannenwulst (5) bis zur unteren Kannenwulst (50) gewellt sind.Flat can, according to one or both of claims 1 and 2, characterized in that the side walls of the flat can are corrugated from the upper can bulge (5) to the lower can bulge (50). Flachkanne, gemäß einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß durch die Kannenwandung selbst an ihrer Innenseite ein Anschlag (51) gebildet ist, der unterhalb der oberen Kannenwulst (5) angeordnet ist.Flat can according to one or more of claims 1 to 4, characterized in that a stop (51) is formed on the inside of the can wall itself, which is arranged below the upper can bead (5).
EP96105019A 1992-10-15 1993-09-15 Flat sliver can Expired - Lifetime EP0725032B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4234793A DE4234793C2 (en) 1992-10-15 1992-10-15 Flat jug
DE4234793 1992-10-15
EP93114803A EP0592828B1 (en) 1992-10-15 1993-09-15 Flat can

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP93114803A Division-Into EP0592828B1 (en) 1992-10-15 1993-09-15 Flat can
EP93114803.5 Division 1993-09-15

Publications (3)

Publication Number Publication Date
EP0725032A2 true EP0725032A2 (en) 1996-08-07
EP0725032A3 EP0725032A3 (en) 1996-11-20
EP0725032B1 EP0725032B1 (en) 1998-07-15

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ID=6470547

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EP93114803A Expired - Lifetime EP0592828B1 (en) 1992-10-15 1993-09-15 Flat can
EP96105019A Expired - Lifetime EP0725032B1 (en) 1992-10-15 1993-09-15 Flat sliver can

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EP93114803A Expired - Lifetime EP0592828B1 (en) 1992-10-15 1993-09-15 Flat can

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US (1) US5450656A (en)
EP (2) EP0592828B1 (en)
JP (1) JPH06316381A (en)
CN (1) CN1091719A (en)
CZ (1) CZ284520B6 (en)
DE (3) DE4234793C2 (en)
TW (1) TW262490B (en)

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Also Published As

Publication number Publication date
CZ9302000A3 (en) 1994-05-18
EP0725032A3 (en) 1996-11-20
JPH06316381A (en) 1994-11-15
EP0592828A1 (en) 1994-04-20
EP0592828B1 (en) 1997-04-23
CN1091719A (en) 1994-09-07
CZ284520B6 (en) 1998-12-16
DE4234793A1 (en) 1994-04-21
DE59308790D1 (en) 1998-08-20
TW262490B (en) 1995-11-11
DE59306250D1 (en) 1997-05-28
US5450656A (en) 1995-09-19
DE4234793C2 (en) 1994-07-21
EP0725032B1 (en) 1998-07-15

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