EP1948855B1 - Ring spinning frame comprising drawing systems - Google Patents
Ring spinning frame comprising drawing systems Download PDFInfo
- Publication number
- EP1948855B1 EP1948855B1 EP06818513.1A EP06818513A EP1948855B1 EP 1948855 B1 EP1948855 B1 EP 1948855B1 EP 06818513 A EP06818513 A EP 06818513A EP 1948855 B1 EP1948855 B1 EP 1948855B1
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- EP
- European Patent Office
- Prior art keywords
- frame
- drawing frame
- ring spinning
- rotor
- drafting
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- 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.)
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/20—Driving or stopping arrangements
- D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
Definitions
- the invention relates to a ring spinning machine with drafting systems, which have a plurality of draw rolls.
- terminal coupling gear can be very long drafting with, for example, 750 and more jobs in the central region of the workstations torsional sagging of the drafting rollers occur that can cause at least distortion in the yarn produced.
- a drafting arrangement has become known in which at least one of the drafting sub-rollers is driven at more than two driving locations along its length.
- drives are helical or helical gear or linear motors ( FIGS. 1 to 3 ) intended. It is obvious that the wheels (27, 29, 31) shown in the drafting system in a small mutual, determined by the processed fiber length distance space found. This is very expensive.
- the invention was therefore based on the object to provide a device by means of which in a simple manner between the ends of very long drafting rollers whose torsion preventing or at least reducing torques can be initiated.
- a preferred embodiment provides that the drafting of a short base ring spinning machine, in which no torsion occurs in the drafting system, is provided with a drafting device main drive device, which covers the torque requirement of this drafting system. At each ring spinning machine, which has a greater length than the base ring spinning machine, the additional torque requirement for speed-accurate drive of the drafting rollers is covered by a corresponding number of drafting roller auxiliary drive devices.
- the drive motors of the drafting roller auxiliary drive devices can be designed as rotary field magnets, as speed-controlled or speed-controlled asynchronous motors or as synchronous motors or reluctance motors.
- rotary field magnets and variable-speed asynchronous motors offer the advantage that in many cases they do not require a function-dependent change in the application of feed energy.
- draw roller auxiliary drive devices can be easily inserted at any points in a drafting, they can be provided in any and each draw roll in different numbers. They can be equipped with low power, which accommodates their narrow design.
- the gearboxes of the drafting roller auxiliary drive devices can be designed to be identical for all drafting rollers.
- the speeds of the input roller and the output roller are usually very different, it may be advantageous to maintain at least for these two drafting rollers draw roller auxiliary drive devices with gearbox with different reduction ratios.
- the center roller which has to move the straps, which has to overcome high resistance when sliding over the deflecting edges of the Riemchenkafige, equipped with draw roller auxiliary drive devices.
- draw roller auxiliary drive devices it is advisable to provide on all drafting rollers of a drafting system with draw roller auxiliary drive devices. The rotational speeds of the drafting rollers driven by these drafting roller auxiliary drive devices are then still determined by the drafting system main drive device.
- the intention is to run the draw roller auxiliary drive devices on the arrival and departure of the drafting system drive speed up and down run. This avoids distortion errors during start-up and at the outlet of the drafting system.
- the drafting rollers are not driven by a gear train, but by separate, exactly speed-controlled (synchronous) motors, have a power supply device that feed these motors with the appropriate frequencies.
- the drive motors of the draw roller auxiliary drive devices are subjected to frequencies corresponding to or derived from the frequencies of the associated draw roller motors. Since in this case the exact, causing the delays speeds of the drafting rollers are determined by the synchronous drive motors of the drafting rollers, is sufficient in most cases the use of Asynchronous motors on the draw roller auxiliary drive devices to reduce their torsion by introducing torque sufficiently.
- draw roller auxiliary drive devices may also be equipped with synchronous or reluctance motors.
- the draft roller and the center roller are driven by separate synchronous motors on drafting systems, while the input roller is driven by gear translation of the center roller, since the bias between input roller and center roller is rarely changed.
- the drive motors of the draw roller auxiliary drive devices of the output and center rollers could be acted upon by frequencies derived from the (master) frequencies of the master motor of the center roller.
- a drafting roller to torsion i. to balance it at least approximately. This can be done by the number of draw rollers associated with a draw roller auxiliary drive devices, by the action of the draw roller auxiliary drive devices with electrical energy, in particular their feed frequency or supply voltage or by the transmitted torque.
- supply frequency or supply voltage can also be adapted to the operating state of a draw roller: it can be temporarily increased during startup of a machine or higher at higher speeds.
- draw roller auxiliary drive devices can be easily inserted at any points and / or in any number in a drafting system, they can be equipped with low power, which accommodates their narrow design. They can also be executed uniformly - they can be used in larger numbers if the torque requirement is higher.
- a draw roller auxiliary drive device is thus preferably arranged between the second and third riffelfeld lying to the right or left of a punch.
- the free allocation to drafting rollers also makes it possible, if several drafting rollers are to be provided with such drafting roller auxiliary drive devices, to insert them between staggered workstations of the drafting rollers.
- the drafting roller auxiliary drive devices must be mounted so as to receive the reaction momentum of the transmitted energy.
- they are therefore fastened to the punches or the roller bearing carriage assigned to the punches. As a result, it is unnecessary that they must be readjusted when changing the roll distance.
- the possible plurality of drafting roller auxiliary drive devices along the drafting rollers can also reduce the diameters of the drafting rollers, if desirable, without the risk of increased torsion with the adverse consequences thereof.
- draw roller auxiliary drive devices have transfer members between a drive member and a draw roller, they may be housed in a closed housing for protection against runoff of the draw roller auxiliary drive devices and contamination of the machined material.
- the stretch roller auxiliary drive devices may be used as drive motors in the form of synchronous motors, which may also be designed as reluctance motors, or of variable speed asynchronous motors.
- maximizing the axial length of both the stator and rotor causes both components to fully occupy the clearance between two adjacent corrugated fields by eliminating bearings provided on either side of the stator and rotor or by making these bearings as narrow as possible form.
- Minimizing the outside diameter of the stand implies that it takes full advantage of the smallest pitch available for adjacent draw rolls. This is possible because the diameter of the draw roll roller carrying the draw roll motor is reduced in the region in which the runner is mounted on it. As a result, not only the electromotive components can be moved further inward, but also those of the stator. Since the inclination of the drafting roller for torsion by the stretched roller motors used is avoided or reduced.
- the drafting rollers in drafting systems have an extremely low impact for textile technology reasons. Out-of-roundness in the course of the drafting rollers would lead to periodic distortion errors and impair the quality of the yarn produced until it is useless. The straightening of the draw rolls to exact concentricity without impact represents a separate operation in their production.
- one of the draw roll sections may comprise a cylindrical stud on which the runner may be secured. When a thread connects to this pin with which the draw roll section can be screwed into the subsequent draw roll section, the runner is clamped on this pin.
- the stator of the drafting roller motor preferably has no bearings. It is attached to a fixed component, which is a carrier of the drafting equipment, a carrier the carrying and loading arms or a strap turn bar can act. It is preferably a component which contains a bearing of the draw roll to which the draw roll motor is assigned.
- the stand can be arranged on a punch of the drafting system or on a roller carriage of one of the output roller upstream drafting rollers.
- stator and rotor require a precise axial position of the two motor parts to each other.
- the stand is adjustable to the runner and adjustable attached to the component.
- a Einstelllehre is proposed in a further embodiment of the invention, by means of which the stator is aligned very precisely to the rotor and fastened in this position on the component provided for this purpose.
- two identical setting gauges are provided, which are insertable from both end sides of the engine forth in the annular gap between the stator and rotor.
- the annular gap between the stator and rotor can be provided with a seal.
- the motor is arranged at a greater distance from the punch or a roller carriage and, accordingly, its attachment has a large projection, the motor can be provided on one side with a support bearing. It does not have the task to store the engine, but only to prevent accidental unilateral loading of the stand comes into contact with the runner.
- bearings are arranged in the rotary gap between the stator and rotor, which can be made weak, since no radial or axial forces occur between the stator and rotor.
- This offers the advantage that the stand does not have to be fixed and does not need to be adjusted and can not touch the runner.
- the stand only has to be supported on a non-rotatable component in order to apply the reaction to the torque. This may be, for example, to the support bar of Unterriemchen-tension brackets.
- FIGS. 1 to 3 The drawings show the starting areas of three drafting rollers A2, A3 and A4 from a drafting system A1, which extend even further to the right. They are stored in punches A5 at regular intervals. In the embodiments of the Figures 1 and 2 they are drivingly connected to one another in a form-locking manner at their left end by a drafting device main drive device A6 in the form of a change gear train A8 driven by an electric motor A7.
- the change-gear transmission gives the drafting rollers angular accuracy to the revolutions, in order to reach between the rollers the default draft stages.
- the drive motor A7 is energized from the network A9.
- the grid also powers a power supply A10 which powers drive motors A11 of draw roller auxiliary drive devices A12.
- the draw roller auxiliary drive devices engage and transmit torque to transfer rollers A13 on the lower rollers A2, A3, A4.
- the power supply device 10 is connected via separate lines A14, A15, A16 to the drive motors A11, so that they can act on these with different supply voltage and / or supply frequency.
- the drafting roller auxiliary drive devices A12 exert only torque on the drafting rollers. In the simplest embodiment, therefore, they can be rotary field magnets which assist the rotational movement imparted to the drafting rollers by the gearbox A8 and thereby reduce the torsion of the rollers. Greater or lesser torque can be achieved by different supply voltage and / or supply frequency.
- the speed sensor A17, A18, A19 whose outputs are connected to the power supply device A10.
- it can act on the drive motors A11 of the draw roller auxiliary drive devices A12 speed-controlled, so that they drive the draw rolls at the intended speed.
- the population of the various drafting rollers A2, A3, A4 may be different with drafting roller auxiliary drive devices A12. It is believed that the torsion of the middle lower roll A3 is higher than that of the others, as it must tow the slips that are slidingly guided over deflections. It is therefore, for example, provided on every second punch A5 with a draw roller auxiliary drive devices A12, while the other bottom rollers, for example, only on every third punch such.
- the draw rolls A2, A3, A4 each have a synchronous motor A20, A21, A22 as drafting main drive device A6.
- the power supply device A10 feeds this synchronous motors with those supply frequencies, are driven by the drafting rollers exactly with the intended speeds. With these frequencies, the drive motors A11 of the drafting roller auxiliary drive devices A12 designed as synchronous motors are also acted upon here and driven synchronously.
- FIG. 4 In FIG. 4 are sections of three bottom rollers B1, B2 and B3 of a drafting B4 shown, which are mounted in a punch B5. To the right of the punch is a support and loading arm B6 recognizable in which three upper roller twins B7, B8 and B9 are mounted, which press on the lower rollers. To the left of the punch is another support and loading arm B6 recognizable, whose upper coil twins are however broken away. In the main drafting zone between the lower rollers B2 and B3 a Riemchen turn rail B10 is located.
- FIG. 5 can be seen below the output roller pair B3 / B9 via an arm B11 of the drive motor B12 a draw roller auxiliary drive device B13 attached to the punch B5.
- the drive motor drives via a spur gear B14 designed as StirnradVorgelege transmission member B15, the other spur gear B16 sits on the lower roller B3.
- the transfer member engages a portion of the lower roller B3, which lies between the twin upper roller B9 of the left support and loading arm B6 and the twin top roller of the next support and load arm, not shown, left. This prevents the transmission member B15 from coming into contact with a support and loading arm B6.
- the spur gear B14 / B16 of a draw roller auxiliary drive device B13 is advantageously accommodated in a dust-tight housing B17.
- the draw roller auxiliary drive device B13 assigned to the middle roller pair B2 / B8 is fastened to the right of the punch B5 on the roller carriage assigned to this roller pair and engages the bottom roller B2 in addition to the twin top roller B8. Thereby, it is avoided that the transfer members B15 of the two draw roller auxiliary drive devices B13 associated with each other adjacent lower rollers interfere with each other when the roller pairs B2 / B8 and B3 / B9 are brought close to each other at a small distance.
- the draw roller auxiliary drive device B13 assigned to the input roller pair B1 / B7 is again arranged to the left of the punch B5 on the roller carriage assigned to this roller pair.
- the arrangement on the roller carriage has the advantage that the draw roller auxiliary drive devices B13 migrate with an adjustment of the roll spacing and require no special adjustment.
- the transfer members B15 of the draw roller auxiliary drive devices B13 are designed so narrow that they can engage between adjacent Riffelfeldern B18 a draw roller to this without a rifflange and thus a job of the drafting would have to be omitted.
- the drafting roller auxiliary drive devices B13 can be inserted as a result of their narrow construction between virtually any desired work stations of a drafting system, there is the advantage that they can be made small and with low power. A required performance can be achieved by appropriate number of pieces.
- draw roller auxiliary drive devices B13 to be attached to a lower roller B1, B2, B3 can be adjusted in their number of units to the tendency of the draw roller to torsion. There is no use of full-performance drafting roller auxiliary drive devices.
- the distance between two work stations of a drafting system B4 corresponding to the pitch T of the ring spinning machine is too small to allow engagement of the transfer member B15 of a drafting roller auxiliary drive device B13.
- the distances between three working points of the drafting system are reduced on the one hand to a distance t 2 and increased to a distance t 1 .
- the draw rolls auxiliary driving device B13 may be mounted between the corrugating fields B18.
- the attack of the drafting roller auxiliary drive device B13 is advantageously carried out at the connection points of the roller sections. As can be seen from FIG. B6, not every connection point has to be equipped with an auxiliary drive device.
- FIG. 7 the increase in the distance can be distributed over two adjacent Riffelfeldabrepresented.
- the distance 3T of three rifling fields is divided into two reduced distances t 4 and a more extended distance t 3 , in which a wider draw roller auxiliary drive device B13 is arranged.
- Two threads B20 run obliquely to the thread guides B21.
- the draw roller motor C1 is inserted between two rifling fields C2, C3 of two sections C4, C5 of a lower roller C6 of a drafting system.
- This can be any lower roller of a drafting system.
- the axial length L of the drafting roller motor is so small that the given pitch T of the work stations of the drafting system and the ring spinning machine need not be increased.
- the drafting roller motor C1 has a rotor C7 and a stator C8.
- the runner C7 is mounted on the draw roller C6. This can - as in FIG. 8 indicated by the fact that the roller portion C4 has a cylindrical pin C9 with subsequent threaded pin C10, by means of which it can be screwed into a bore of the roller portion C5.
- the bush-shaped rotor then lies on the cylindrical pin C9 and is clamped between the roller sections C4, C5.
- FIG. 9 a solution is shown in which the drum-shaped rotor has on both sides of two retaining pins C11, by means of which it can be inserted or screwed non-positively into bores of the adjacent roller sections C4 and C5.
- the rotor C7 can also be divided in an axis-parallel plane and be placed and fastened on the area between two Riffelfeldern C2, C3.
- the runner C7 is so long that its end faces abut directly on the subsequent Riffelfeldern C2, C3.
- the available space between the adjacent Riffelfeldern is thus maximally utilized by the torque-applying parts stator C8 and rotor C7.
- the stand C8 has no bearings. It has a tab C12, by means of which it is usually fastened via a spacer C13 indicated by only with their center lines C14 screws to a non-rotatable member C15 which is connected to a bearing C16 of the lower roller C6.
- this involves the punch of the drafting system or roller carriages which are displaceable on this punch and which also contain bearings of drafting rollers.
- the connection with a roller carriage has the advantage that the connection of the stator to the component does not have to be readjusted when a draw roller is displaced when changing roller distances.
- the stand can also be connected to another, stationary, non-rotatable component.
- the drafting system can be provided with a separate holding device for the stands C8.
- the draw roller motor C1 itself, as mentioned, does not have its own bearings.
- the traveler C7 is mounted on the rotary draw roll C6, the stand C8 is fixed to a component C15 which is advantageously in firm contact with a bearing C16 of the draw roll C6 associated with the draw roll motor.
- the draw rolls of ring spinning machines have such a small impact that even in this way a very narrow gap between the stator C8 and rotor C7 is possible and an accurate concentricity of the drafting roller motor is ensured.
- FIG. 13 For example, illustrated setting gauge C17 provided. It has a handle C18 and on a circular arm C19 three offset by 120 °, the course of the gap C20 between stator 8C and rotor C7 corresponding, wedge-shaped tabs C21. These tabs will, as in FIG. 12 indicated, pressed in the direction of the arrow P in the gap C20 and thereby center the stand to the runner.
- two setting gauges are provided, whose tabs C21 can be inserted from both sides into the column C20. In the thus achieved coaxial position of the stator to the rotor former can be attached to the stationary or rotationally fixed component C15.
- seals C22 can be provided around the two gaps C20 between stator C8 and rotor C7.
- the seals are preferably formed as a felt ring and can lie in grooves C23 of the stator or the rotor.
- the drafting roller motor C1 can not be arranged directly next to the punching element C15, since there is a corrugated field there. He can attack between the two by the first top roller twins C24 next to the punch operated jobs on a drafting roller C6 and sits on the short spacer C13. However, since he often intervenes in the area of the axes of the upper roller twins C24 or the Oberwalzentrag- and loading arm C25, he often has to be moved into an intermediate riffler field on. For this purpose, a long spacer C26 is required, which can project the drafting roller engine far.
- a clearance bearing C27 may be provided between the stator C8 and the rotor C7, which prevents touching sensitive parts of the drafting roller motor in case of unintentional one-sided loading of the stator C8.
- the spacer bearing C27 is not used to support the rotor C7 in the stator or the stator 8 on the rotor, but only to comply with the distance or gap C20 between the stator and rotor.
- the spacer bearing C27 is shown as a ball bearing.
- the distance bearing can also be designed as a sliding bearing. Due to its arrangement in the gap C20 between stator C8 and rotor C7, it requires no bearing plate and can even be kept so narrow that it does not extend the length of the engine significantly.
- FIG. 10 shows an embodiment in which two bearings C28 are provided in the gap C20 between the rotatable with the draw roll C6 runners C7 and the non-rotatably supported stand C8. Since the forces occurring between rotor and stator are small, the bearings can be made narrow and accordingly reduce the achievable torque only slightly.
- the stator C8 mounted on the rotor C7 must be supported on a non-rotatable component in order to apply the reaction force of the drafting roller motor C1.
- this is the handrail C29 of the strapping clamp C30.
- the tab C12 on the stand engages around the support bar like a fork. When displacing the draw roller C6, the tab C12 remains engaged with the support bar C29.
- the embodiment may be such that the stator C8 has narrow terminal sheet-shaped end shields C31 in which are also arranged narrow bearings C32 running on the drafting roller C6.
- the end shields C31 are so narrow that they do not reduce the electromotive forces between stator C8 and rotor C7.
- it may be provided to reduce the diameter of the cylindrical pin C9 on which the rotor C7 is mounted.
- the diameter of the drafting roller motor C1 is expanded to some extent inwardly, the components of the rotor slip inwards and those of the stator can also be expanded inwards.
- the outer diameter of the stator 8 is kept at a minimum level and yet maximizes the torque output by the drafting roller motor C1.
- the invention can be practiced with all types of electric motors suitable for driving drafting rollers: synchronous and reluctance motors, variable speed or non-speed controlled asynchronous motors, stepping motors, rotary solenoids.
- the feeding of their stand is done for speed adjustment, preferably with controlled frequency.
- the stator includes field windings, the rotor permanent magnets, which are not shown in detail in the figures, rotor C7 and stator C8 are indicated in the figures only by hatching.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
Die Erfindung befasst sich mit einer Ringspinnmaschine mit Streckwerken, die mehrere Streckwalzen aufweisen.The invention relates to a ring spinning machine with drafting systems, which have a plurality of draw rolls.
An Streckwerken großer Länge zum Beispiel mit fünfhundert Arbeitsstellen und mehr tritt das Problem auf, dass ihre Streckwalzen unter dem auf sie ausgeübten Drehmoment und des unterschiedlichen Drehwiderstandes unterschiedlich tordieren. Ab welcher Länge dieses Problem auftritt, hängt von verschiedenen Faktoren ab wie Walzendurchmesser, Lagerreibung, Hemmung durch gezogene Riemchen usw. Beim Lauf des Streckwerkes wirkt sich diese unterschiedliche Torsion nicht nachteilig aus. Bei Beschleunigung oder Verzögerung des Laufs des Streckwerkes wie beim Anlauf und beim Auslauf, bei dem sich diese unterschiedliche Torsionen auf- bzw. abbauen können, führt dies jedoch zu Verzugsfehlern. Je nachdem, ob die Torsion einer Streckwalze zu der einer vor- oder einer nachgeschalteten Streckwalze vorlaufend oder nachlaufend ist, führt dies zu Dünnstellen oder zu Dickstellen im Garn, die zu Qualitätseinbußen oder gar zu Fadenbrüchen führen können.For example, with drafting systems of great length, with five hundred jobs or more, the problem arises that their drafting rollers twist differently under the torque applied to them and the different rotational resistance. From which length this problem occurs depends on various factors such as roller diameter, bearing friction, inhibition by pulled straps, etc. When running the drafting system, this different torsion does not adversely affect. Acceleration or deceleration of the drafting system, such as during start-up and during discharge, during which these different torsions can build up or break down, however, leads to distortion errors. Depending on whether the torsion of a draw roll to that of a pre- or a downstream draw roll leading or trailing, this leads to thinning or thick spots in the yarn, which can lead to quality losses or even yarn breaks.
Es ist daher bekannt, unterschiedliche Torsionen in den Streckwalzen eines Streckwerkes großer Länge dadurch zu verhindern oder zumindest auf einen unschädlichen Betrag zu vermindern, dass an dem dem Streckwerksgetriebe abgekehrten Ende der Streckwalzen ein der Räderübertragung des Streckwerksgetriebes gleiches (Hilfs-)Rädergetriebe angeordnet wird, durch das die jeweiligen gegenseitigen Winkelstellungen der Streckwalzen auch beim Anlauf, beim Auslauf oder beim Stillstand des Streckwerkes aufrecht erhalten werden. Die Torsionen werden also nicht aufgehoben, sondern im Verzugsverhältnis gehalten (
Hierbei muss natürlich sichergestellt sein, dass eine Änderung der Verzugsverhältnisse im Streckwerks-Hauptgetriebe etwa bei einer Änderung der Garnnummer entsprechend auch im Hilfsgetriebe vorgenommen wird. Dies stellt nicht nur Mehrarbeit dar, sondern auch eine gefährliche Fehlerquelle, die zu Beschädigung des Streckwerkes führen kann, wenn diese Änderung nicht gleichsinnig ausgeführt wird und wenn hiergegen nicht Sicherungen eingebaut sind.In this case, of course, it must be ensured that a change in the draft conditions in the drafting main gear is made approximately in a change of the yarn number corresponding to the auxiliary gear. This not only represents additional work, but also a dangerous source of error, which can lead to damage to the drafting system, if this Change is not carried out in the same direction and if not fuses are installed against this.
Es wurde daher auch schon vorgeschlagen, nicht ein Hilfsgetriebe mit Räderübertragung einzusetzen, sondern durch Hilfsmotoren an den dem Streckwerksgetriebe abgekehrten Ende der Streckwalzen, durch die Drehmomente in die Streckwalzen eingeleitet werden, die Torsionen der Streckwalzen wenn nicht zu verhindern, so doch zumindest unter kritischen Werten zu halten. So ist aus der
Das Anordnen des Streckwerkes im Längsbereich der Streckwalzen hat jedoch den Nachteil, dass die Abfolge der Teilung der Arbeitsstellen an dieser Stelle unterbrochen ist. Das verkompliziert nicht nur den Aufbau der Ringspinnmaschine. Es erfordert auch insbesondere dann, wenn Vorrichtungen zum selbsttätigen Wechsel der Vorgarnspulen und/oder der Kopse vorgesehen sind, besondere Maßnahmen, da selbsttätige Zuführeinrichtungen für solche Wechselvorrichtungen an diesen Stellen einen Bereich mit Leerstellen aufweisen müssen.The arrangement of the drafting in the longitudinal region of the draw rolls, however, has the disadvantage that the sequence of division of the jobs is interrupted at this point. This not only complicates the structure of the ring spinning machine. It also requires particular measures, when devices are provided for automatically changing the roving bobbins and / or the cops, special measures, since automatic feeders for such changing devices must have an area with vacancies at these locations.
Auch bei Einsatz endständiger Koppelgetriebe können bei sehr langen Streckwerken mit zum Beispiel 750 und mehr Arbeitsstellen im mittleren Bereich der Arbeitsstellen torsionsbedingte Durchhänger der Streckwalzen auftreten, die zumindest Verzugsfehler im erzeugten Garn verursachen können.Even with the use of terminal coupling gear can be very long drafting with, for example, 750 and more jobs in the central region of the workstations torsional sagging of the drafting rollers occur that can cause at least distortion in the yarn produced.
Aus der
Der Erfindung war daher die Aufgabe gestellt, eine Einrichtung zu schaffen, mittels deren auf einfache Weise auch zwischen den Enden sehr langer Streckwalzen deren Torsion verhindernde oder zumindest vermindernde Drehmomente eingeleitet werden können.The invention was therefore based on the object to provide a device by means of which in a simple manner between the ends of very long drafting rollers whose torsion preventing or at least reducing torques can be initiated.
Erfindungsgemäße Lösungen sind in den Ansprüchen 1, 2 und 7 angegeben.Solutions according to the invention are specified in claims 1, 2 and 7.
Dadurch, dass langen Streckwerken sowohl eine an ihrem einen Ende angeordnete Streckwerks-Hauptantriebsvorrichtung, durch die den Streckwalzen die verzugsgerechten Drehzahlen aufgedrückt wird, als auch gegebenenfalls mehrere, über die Länge der Streckwalzen verteilte Streckwalzen-Hilfsantriebsvorrichtungen zugeordnet sind, wird der Neigung der Streckwalzen zur Torsion über deren ganze Länge entgegen gewirkt. Dabei brauchen die Antriebe der Streckwalzen-Hilfsantriebsvorrichtungen keine den Antrieben der Streckwerks-Hauptantriebsvorrichtungen entsprechenden Drehzahlen auf die Streckwalzen auszuüben, was ihre Ausführungsform und ihre Beaufschlagung mit elektrischer Energie wesentlich vereinfacht.Characterized in that long drafting both a arranged at one end drafting device main drive device, by which the drafting rollers the distortion-oriented speeds is pressed, and optionally associated with a plurality of distributed over the length of the drafting rollers stretch roller auxiliary drive devices, the inclination of the drafting rollers for twisting counteracted over its entire length. In this case, the drives of the draw roller auxiliary drive devices need not exert the drives of the drafting device main drive devices corresponding speeds on the draw rolls, which greatly simplifies their embodiment and their application of electrical energy.
Eine bevorzugte Ausführungsform sieht vor, dass das Streckwerk einer kurzen Basis-Ringspinnmaschine, bei der im Streckwerk noch keine Torsion auftritt, mit einer Streckwerks-Hauptantriebsvorrichtung versehen wird, die den Momentenbedarf dieses Streckwerkes deckt. An jeder Ringspinnmaschine, die größere Länge als die Basis-Ringspinnmaschine aufweist, wird der zusätzliche Momentenbedarf zum drehzahlgenauen Antrieb der Streckwalzen durch eine entsprechende Anzahl von Streckwalzen-Hilfsantriebsvorrichtungen gedeckt.A preferred embodiment provides that the drafting of a short base ring spinning machine, in which no torsion occurs in the drafting system, is provided with a drafting device main drive device, which covers the torque requirement of this drafting system. At each ring spinning machine, which has a greater length than the base ring spinning machine, the additional torque requirement for speed-accurate drive of the drafting rollers is covered by a corresponding number of drafting roller auxiliary drive devices.
Die schmale Ausbildung der Streckwalzen-Hilfsantriebsvorrichtungen bzw. deren Übertragungsorgane auf die Streckwalzen erlaubt es, sie zwischen den Arbeitsstellen an den Streckwalzen angreifen lassen zu können, ohne dass die Teilungsabstände der Arbeitsstellen der Ringspinnmaschine erhöht werden müssten oder dass Arbeitsstellen entfallen müssten. Damit eröffnet sich auch die Möglichkeit, die Streckwalzen-Hilfsantriebsvorrichtungen an beliebigen Stellen entlang der Streckwalzen und in beliebiger Anzahl anzusetzen und zusätzliches Drehmoment in die Streckwalzen einzuleiten und ihre Torsion zu vermindern.The narrow design of the draw roller auxiliary drive devices or their transfer organs on the draw rolls allows them to be attacked between the jobs on the draw rolls, without the pitch of the jobs of the ring spinning machine would have to be increased or jobs would have to be eliminated. This also opens up the possibility of setting the draw roller auxiliary drive devices anywhere along the draw rolls and in any number and to introduce additional torque into the draw rolls and to reduce their torsion.
Die Antriebsmotoren der Streckwalzen-Hilfsantriebsvorrichtungen können als Drehfeldmagneten, als drehzahlweiche oder drehzahlgeregelte Asynchronmotoren oder als Synchronmotoren oder Reluktanzmotoren ausgebildet sein. Insbesondere Drehfeldmagnete und drehzahlweiche Asynchronmotoren bieten den Vorteil, dass sie in vielen Fällen keine funktionsabhängige Veränderung der Beaufschlagung mit Speiseenergie erfordern.The drive motors of the drafting roller auxiliary drive devices can be designed as rotary field magnets, as speed-controlled or speed-controlled asynchronous motors or as synchronous motors or reluctance motors. In particular, rotary field magnets and variable-speed asynchronous motors offer the advantage that in many cases they do not require a function-dependent change in the application of feed energy.
Da die Streckwalzen-Hilfsantriebsvorrichtungen ohne weiteres an beliebigen Stellen in ein Streckwerk eingefügt werden können, können sie in beliebiger und je Streckwalze in unterschiedlicher Anzahl vorgesehen werden. Sie können mit geringer Leistung ausgestattet werden, was ihrer schmalen Bauart entgegen kommt.Since the draw roller auxiliary drive devices can be easily inserted at any points in a drafting, they can be provided in any and each draw roll in different numbers. They can be equipped with low power, which accommodates their narrow design.
Der Einheitlichkeit halber können die Getriebe der Streckwalzen-Hilfsantriebsvorrichtungen für alle Streckwalzen übereinstimmend ausgebildet sein. Da die Drehzahlen der Eingangswalze und der Ausgangswalze jedoch in aller Regel sehr unterschiedlich sind, kann es vorteilhaft sein, zumindest für diese beiden Streckwalzen Streckwalzen-Hilfsantriebsvorrichtungen mit Getriebe mit unterschiedlichen Untersetzungsverhältnissen vorzuhalten.For the sake of uniformity, the gearboxes of the drafting roller auxiliary drive devices can be designed to be identical for all drafting rollers. However, since the speeds of the input roller and the output roller are usually very different, it may be advantageous to maintain at least for these two drafting rollers draw roller auxiliary drive devices with gearbox with different reduction ratios.
Insbesondere ist die Mittelwalze, die die Riemchen zu bewegen hat, die beim Gleiten über die Umlenkkanten der Riemchenkäfige hohe Widerstände zu überwinden hat, mit Streckwalzen-Hilfsantriebsvorrichtungen auszustatten. Es empfiehlt sich jedoch, an allen Streckwalzen eines Streckwerkes mit Streckwalzen-Hilfsantriebsvorrichtungen vorzusehen. Die Drehzahlen der von diesen Streckwalzen-Hilfsantriebsvorrichtungen angetriebenen Streckwalzen werden dann nach wie vor durch die Streckwerks-Hauptantriebsvorrichtung bestimmt.In particular, the center roller which has to move the straps, which has to overcome high resistance when sliding over the deflecting edges of the Riemchenkäfige, equipped with draw roller auxiliary drive devices. However, it is advisable to provide on all drafting rollers of a drafting system with draw roller auxiliary drive devices. The rotational speeds of the drafting rollers driven by these drafting roller auxiliary drive devices are then still determined by the drafting system main drive device.
Mit der Ableitung von der Speisefrequenz des Streckwerksantriebsmotors wird die Absicht verfolgt, die Streckwalzen-Hilfsantriebsvorrichtungen an der An- und Auslaufkennlinie des Streckwerksantriebs drehzahlgeführt hoch- und herunterlaufen zu lassen. Damit werden Verzugsfehler beim Anlauf und beim Auslauf des Streckwerkes vermieden.With the derivation of the feed frequency of the drafting drive motor, the intention is to run the draw roller auxiliary drive devices on the arrival and departure of the drafting system drive speed up and down run. This avoids distortion errors during start-up and at the outlet of the drafting system.
In Streckwerken, deren Streckwalzen nicht durch ein Rädergetriebe, sondern durch gesonderte, exakt drehzahlgesteuerte (Synchron)Motoren angetrieben werden, weisen eine Energieversorgungseinrichtung auf, die diese Motoren mit den entsprechenden Frequenzen speisen. In diesem Falle werden die Antriebsmotoren der Streckwalzen-Hilfsantriebsvorrichtungen mit Frequenzen beaufschlagt, die den Frequenzen der zugeordneten Streckwalzenmotoren entsprechen oder von diesen abgeleitet sind. Da in diesem Falle die exakten, die Verzüge bewirkenden Drehzahlen der Streckwalzen durch die synchronen Antriebsmotoren der Streckwalzen bestimmt werden, genügt in aller Regel der Einsatz von Asynchronmotoren an den Streckwalzen-Hilfsantriebsvorrichtungen, um deren Torsion durch Einleiten von Drehmoment ausreichend zu vermindern.In drafting systems, the drafting rollers are not driven by a gear train, but by separate, exactly speed-controlled (synchronous) motors, have a power supply device that feed these motors with the appropriate frequencies. In this case, the drive motors of the draw roller auxiliary drive devices are subjected to frequencies corresponding to or derived from the frequencies of the associated draw roller motors. Since in this case the exact, causing the delays speeds of the drafting rollers are determined by the synchronous drive motors of the drafting rollers, is sufficient in most cases the use of Asynchronous motors on the draw roller auxiliary drive devices to reduce their torsion by introducing torque sufficiently.
Es versteht sich, dass die Streckwalzen-Hilfsantriebsvorrichtungen auch mit Synchron- oder Reluktanzmotoren ausgestattet sein können.It is understood that the draw roller auxiliary drive devices may also be equipped with synchronous or reluctance motors.
Für den Antrieb von Streckwerken werden in aller Regel Elektromotoren aus Normreihen eingesetzt, die bestimmte Leistungsstufen haben. Da ein passender Elektromotor selten angeboten ist, kommt meist der nächst stärkere zum Einsatz, der aber teurer ist und ungünstiger Weise nur unter Teillast läuft. Auch bei der vorliegenden Erfindung liegt es nahe, einheitliche Leistungen der Elektromotoren vorzusehen. Hier bietet es aber keine Probleme, die Anzahl der eingesetzten, einheitlichen Streckwalzen-Hilfsantriebsvorrichtungen sehr eng an die erforderliche Gesamtleistungsaufnahme anzupassen, so dass deren Motoren nahe ihrer Nennleistung belastet sind.For the drive of drafting systems electric motors from standard series are usually used, which have certain power levels. Since a suitable electric motor is rarely offered, usually the next stronger is used, but is more expensive and unfavorably runs only under partial load. Also in the present invention, it is obvious to provide uniform performances of the electric motors. Here, however, there are no problems in adapting the number of uniform drafting roller auxiliary drive devices very closely to the required total power input, so that their motors are loaded close to their rated power.
Aus praktischen Gründen empfiehlt es sich, alle Streckwalzen eines Streckwerkes benachbart mit Streckwalzen-Hilfsantriebsvorrichtungen auszustatten. Dies vereinfacht ihre Verdrahtung. Es spricht aber auch nichts dagegen, eine Streckwalze, die höhere Torsion aufweist als andere, in geringerem Abstand und demgemäss mit einer größeren Anzahl von Streckwalzen-Hilfsantriebsvorrichtungen zu versehen. Auf diese Weise können mit geringst möglichen Anzahlen von Streckwalzen-Hilfsantriebsvorrichtungen mit optimal belasteten Antriebsmotoren unterschiedliche Torsionen von Streckwalzen ausgeglichen werden.For practical reasons, it is advisable to equip all drafting rollers of a drafting system adjacent with drafting roller auxiliary drive devices. This simplifies their wiring. However, there is nothing wrong with providing a drafting roller which has higher torsion than others at a smaller distance and accordingly with a larger number of drafting roller auxiliary drive devices. In this way, different torsions of drafting rollers can be compensated for with the least possible number of draw roller auxiliary drive devices with optimally loaded drive motors.
Häufig werden an Streckwerken die Ausgangswalze und die Mittelwalze durch gesonderte Synchronmotoren angetrieben, während die Eingangswalze durch Zahnradübersetzung von der Mittelwalze aus angetrieben wird, da der Vorverzug zwischen Eingangswalze und Mittelwalze selten geändert wird. In diesem Falle könnten die Äntriebsmotoren der Streckwalzen-Hilfsantriebsvorrichtungen der Ausgangs- und der Mittelwalze durch Frequenzen beaufschlagt werden, die von den (Master)Frequenzen des Mastermotors der Mittelwalze abgeleitet sind.Frequently, the draft roller and the center roller are driven by separate synchronous motors on drafting systems, while the input roller is driven by gear translation of the center roller, since the bias between input roller and center roller is rarely changed. In this case, the drive motors of the draw roller auxiliary drive devices of the output and center rollers could be acted upon by frequencies derived from the (master) frequencies of the master motor of the center roller.
Durch die vorgeschlagene schmale Ausbildung zumindest der die Antriebsenergie auf die Streckwalzen übertragenden Übertragungsorgane der Streckwalzen-Hilfsantriebsvorrichtungen wird es möglich, diese zwischen zwei Arbeitsstellen an Streckwalzen angreifen zu lassen, ohne die Spindelteilung der Ringspinnmaschine zu erhöhen oder Arbeitsstellen entfallen lassen zu müssen.Due to the proposed narrow design at least of the drive energy transmitted to the drafting rollers transmission elements of the drafting roller auxiliary drive devices, it is possible to attack this between two jobs on drafting rollers without having to increase the spindle pitch of the ring spinning machine or jobs have to be omitted.
Damit eröffnet sich die Möglichkeit, an beliebigen Stellen entlang der Streckwalzen zusätzliches Drehmoment in die Streckwalzen einzuleiten und ihre Torsion zu verhindern oder zumindest zu vermindern. Hierbei soll erfindungsgemäß auf die Tendenz einer Streckwalze zur Torsion abgestellt werden, d.h. darauf, diese zumindest annähernd auszugleichen. Dies kann durch die Anzahl der einer Streckwalze zugeordneten Streckwalzen-Hilfsantriebsvorrichtungen, durch die Beaufschlagung der Streckwalzen-Hilfsantriebsvorrichtungen mit elektrischer Energie, insbesondere deren Speisefrequenz oder Speisespannung oder durch das übertragene Drehmoment erfolgen.This opens up the possibility of introducing additional torque into the draw rolls at any point along the draw rolls and preventing or at least reducing their torsion. In this case, according to the invention, the tendency of a drafting roller to torsion, i. to balance it at least approximately. This can be done by the number of draw rollers associated with a draw roller auxiliary drive devices, by the action of the draw roller auxiliary drive devices with electrical energy, in particular their feed frequency or supply voltage or by the transmitted torque.
Die Wahl der Speisefrequenz oder Speisespannung kann zudem an den Betriebszustand einer Streckwalze angepasst werden: sie kann beim Anlauf einer Maschine vorübergehend erhöht oder bei höheren Drehzahlen höher gewählt werden.The choice of supply frequency or supply voltage can also be adapted to the operating state of a draw roller: it can be temporarily increased during startup of a machine or higher at higher speeds.
Da die Streckwalzen-Hilfsantriebsvorrichtungen ohne weiteres an beliebigen Stellen und/oder in beliebiger Anzahl in ein Streckwerk eingefügt werden können, können sie mit geringer Leistung ausgestattet werden, was ihrer schmalen Bauart entgegen kommt. Sie können auch einheitlich ausgeführt werden - bei höherem Momentenbedarf können sie in größerer Anzahl eingesetzt werden.Since the draw roller auxiliary drive devices can be easily inserted at any points and / or in any number in a drafting system, they can be equipped with low power, which accommodates their narrow design. They can also be executed uniformly - they can be used in larger numbers if the torque requirement is higher.
Falls unter einem Trag- und Belastungsarm eines Streckwerkes kein ausreichender Raum für das Ankoppeln eines Übertragungsorgans einer Streckwalzen-Hilfsantriebsvorrichtung vorhanden sein sollte, wird vorgeschlagen, diese zwischen zwei, benachbarten Trag- und Belastungsarmen zugeordneten Oberwalzenpaaren anzuordnen. Eine Streckwalzen-Hilfsantriebsvorrichtung wird also bevorzugt zwischen dem zweiten und dritten rechts oder links neben einer Stanze liegenden Riffelfeld angeordnet.If under a support and loading arm of a drafting system no sufficient space for coupling a transfer member of a drafting roller auxiliary drive device should be present, it is proposed to arrange these between two adjacent support and loading arms associated upper roller pairs. A draw roller auxiliary drive device is thus preferably arranged between the second and third riffelfeld lying to the right or left of a punch.
Falls zwischen zwei benachbarten Arbeitsstellen eines Streckwerkes kein ausreichender Raum für das Ankoppeln eines Übertragungsorgans einer Streckwalzen-Hilfsantriebsvorrichtung vorhanden sein sollte, wird vorgeschlagen, den Abstand zwischen zwei durch den selben Oberwalzenzwilling bedienten Arbeitsstellen zu vermindern, wodurch sich der Abstand zwischen den durch andere Oberwalzenzwillinge bediente Arbeitsstellen bei gleichzeitigem Beibehalten der Spindelteilung erhöht. Dies schafft Raum für das Ankoppeln der Übertragungsorgane in diesem vergrößerten Zwischenraum.If between two adjacent jobs of a drafting system no sufficient space for the coupling of a transfer member of a draw roller auxiliary drive device should be present, it is proposed to reduce the distance between two serviced by the same Oberwalzenzwilling jobs, thereby increasing the distance between the serviced by other Oberwalzenzwillinge jobs while maintaining the spindle pitch increased. This creates space for the coupling of the transmission members in this enlarged space.
Die freie Zuordnung zu Streckwalzen ermöglicht es auch, dass dann, wenn mehrere Streckwalzen mit derartigen Streckwalzen-Hilfsantriebsvorrichtungen versehen werden sollen, diese zwischen gegeneinander versetzten Arbeitsstellen der Streckwalzen einzufügen.The free allocation to drafting rollers also makes it possible, if several drafting rollers are to be provided with such drafting roller auxiliary drive devices, to insert them between staggered workstations of the drafting rollers.
Die Streckwalzen-Hilfsantriebsvorrichtungen müssen derart befestigt werden, dass sie das Reaktionsmoment der übertragenen Energie aufnehmen. Vorteilhafter Weise werden sie daher an den Stanzen bzw. den den Stanzen zugeordneten Walzen-Lagerschlitten befestigt. Dadurch erübrigt es sich, dass sie bei einem Verändern des Walzenabstandes neu justiert werden müssen.The drafting roller auxiliary drive devices must be mounted so as to receive the reaction momentum of the transmitted energy. Advantageously, they are therefore fastened to the punches or the roller bearing carriage assigned to the punches. As a result, it is unnecessary that they must be readjusted when changing the roll distance.
Um auch hier versetzte Anordnung zu erreichen, wird vorgeschlagen, die Streckwalzen-Hilfsantriebsvorrichtungen an einer Stanze abwechselnd rechts und links anzuordnen.In order to achieve staggered arrangement here, it is proposed to arrange the draw roller auxiliary drive devices on a punch alternately right and left.
Durch die mögliche Vielzahl von Streckwalzen-Hilfsantriebsvorrichtungen entlang der Streckwalzen können auch die Durchmesser der Streckwalzen vermindert werden, wenn dies wünschenswert erscheint, ohne dass die Gefahr erhöhter Torsionen mit deren nachteiligen Folgen entsteht.The possible plurality of drafting roller auxiliary drive devices along the drafting rollers can also reduce the diameters of the drafting rollers, if desirable, without the risk of increased torsion with the adverse consequences thereof.
Falls die Streckwalzen-Hilfsantriebsvorrichtungen Übertragungsorgane zwischen einem Antriebsorgan und einer Streckwalze aufweisen, können sie zum Schutz gegen Verflugen der Streckwalzen-Hilfsantriebsvorrichtungen und gegen Verschmutzen des bearbeiteten Materials in einem geschlossenen Gehäuse untergebracht sein.If the draw roller auxiliary drive devices have transfer members between a drive member and a draw roller, they may be housed in a closed housing for protection against runoff of the draw roller auxiliary drive devices and contamination of the machined material.
Da die Drehzahlen der Eingangswalze und der Ausgangswalze in aller Regel sehr unterschiedlich sind, kann es vorteilhaft sein, zumindest für diese beiden Streckwalzen gemeinsame Streckwalzen-Hilfsantriebsvorrichtungen mit Getriebe mit unterschiedlichen Untersetzungsverhältnissen auf die beiden Streckwalzen vorzusehen.Since the speeds of the input roller and the output roller are usually very different, it may be advantageous to provide common draw rollers auxiliary drive devices with gearbox with different reduction ratios on the two drafting rollers at least for these two drafting rollers.
Den Streckwalzen-Hilfsantriebsvorrichtungen können Antriebsmotoren in Form von Synchronmotoren, die auch als Reluktanzmotoren ausgeführt sein können, oder von drehzahlgeregelten Asynchronmotoren eingesetzt werden.The stretch roller auxiliary drive devices may be used as drive motors in the form of synchronous motors, which may also be designed as reluctance motors, or of variable speed asynchronous motors.
Bei einem Streckwalzen-Motor bewirkt das Maximieren der axialen Länge sowohl von Ständer als auch Läufer, dass beide Bauteile den lichten Abstand zwischen zwei benachbarten Riffelfeldern voll einnehmen, indem sie auf beidseits von Ständer und Läufer vorzusehene Lager überhaupt verzichten oder diese Lager so schmal wie möglich ausbilden.In a stretch roller motor, maximizing the axial length of both the stator and rotor causes both components to fully occupy the clearance between two adjacent corrugated fields by eliminating bearings provided on either side of the stator and rotor or by making these bearings as narrow as possible form.
Dies wird dadurch möglich, dass der Läufer auf der Streckwalze gelagert ist und zwischen Ständer und Läufer keine einseitig radial gerichteten Kräfte auftreten.This is possible because the rotor is mounted on the draw roller and between stand and rotor no unilaterally radially directed forces occur.
Minimieren des äußeren Durchmessers des Ständers besagt, dass er das zu benachbarten Streckwalzen zur Verfügung stehende, geringste Abstandsmaß voll ausnützt. Dies wird dadurch möglich, dass der Durchmesser der den Streckwalzenmotor tragenden Streckwalze in dem Bereich, in dem der Läufer auf ihr befestigt ist, vermindert ist. Dadurch können nicht nur dessen elektromotorisch wirksamen Bauteile weiter nach innen verlagert werden, sondern auch diejenigen des Ständers. Da die Neigung der Streckwalze zur Torsion durch die eingesetzten Streckwalzenmotoren vermieden oder vermindert wird.Minimizing the outside diameter of the stand implies that it takes full advantage of the smallest pitch available for adjacent draw rolls. This is possible because the diameter of the draw roll roller carrying the draw roll motor is reduced in the region in which the runner is mounted on it. As a result, not only the electromotive components can be moved further inward, but also those of the stator. Since the inclination of the drafting roller for torsion by the stretched roller motors used is avoided or reduced.
Bei diesem Maximieren bzw. Minimieren muss darauf geachtet werden, dass das abgegebene Drehmoment des Streckwalzenmotors größtmöglich bleibt.In this maximization or minimization, care must be taken that the delivered torque of the drafting roller motor remains as large as possible.
Durch den Verzicht auf eigene Lager des Läufers kann dessen axiale Länge vergrößert werden, da derartige, in besonderen Endschilden anzuordnende Lager axiale Baulänge beanspruchen würden. Der Verzicht wird dadurch möglich, dass der Läufer auf der Streckwalze befestigt ist, der er zugeordnet ist und von deren ohnehin vorhandener Lagerung er mit Gebrauch macht. Dieses Lager ist vom Läufer beabstandet und nur indirekt über die Streckwalze mit ihm verbunden.By dispensing with own bearing of the rotor whose axial length can be increased because such, to be arranged in special end shields bearing axial length would claim. The waiver is made possible by the fact that the runner is mounted on the draw roll to which he is assigned and makes their already existing storage with use. This bearing is spaced from the rotor and connected to it only indirectly via the draw roll.
Die Streckwalzen in Streckwerken weisen aus textiltechnologischen Gründen einen extrem geringen Schlag auf. Unrundheiten im Lauf der Streckwalzen würden zu periodischen Verzugsfehlern führen und die Qualität des erzeugten Garnes bis zur Unbrauchbarkeit beeinträchtigen. Das Richten der Streckwalzen auf exakten Rundlauf ohne Schlag stellt einen gesonderten Arbeitsgang bei ihrer Fertigung dar.The drafting rollers in drafting systems have an extremely low impact for textile technology reasons. Out-of-roundness in the course of the drafting rollers would lead to periodic distortion errors and impair the quality of the yarn produced until it is useless. The straightening of the draw rolls to exact concentricity without impact represents a separate operation in their production.
Durch das Einstecken überstehender Zapfen des Läufers in die an den Streckwalzenmotor anschließenden Streckwalzenabschnitte wird ein äußerst präziser, schlagfreier Lauf des Läufers erreicht. Alternativ kann einer der Streckwalzenabschnitte einen zylindrischen Zapfen aufweisen, auf dem der Läufer befestigt werden kann. Wenn sich an diesen Zapfen ein Gewinde anschließt, mit dem der Streckwalzenabschnitt in den anschließenden Streckwalzenabschnitt einschraubbar ist, wird der Läufer auf diesem Zapfen klemmend befestigt.By inserting projecting pins of the rotor into the draw roller sections adjoining the draw roller motor, an extremely precise, impact-free running of the rotor is achieved. Alternatively, one of the draw roll sections may comprise a cylindrical stud on which the runner may be secured. When a thread connects to this pin with which the draw roll section can be screwed into the subsequent draw roll section, the runner is clamped on this pin.
Auch der Ständer des Streckwalzenmotors weist bevorzugt keine Lager auf. Er ist an einem ortsfesten Bauteil befestigt, bei dem es sich um einen Träger der Streckwerke, einen Träger der Trag- und Belastungsarme oder eine Riemchen-Wendeschiene handeln kann. Bevorzugt handelt es sich um ein Bauteil, das ein Lager der Streckwalze enthält, der der Streckwalzenmotor zugeordnet ist. Insbesondere kann der Ständer an einer Stanze des Streckwerkes angeordnet sein oder an einem Walzenschlitten einer der der Ausgangswalze vorgeordneten Streckwalzen.Also, the stator of the drafting roller motor preferably has no bearings. It is attached to a fixed component, which is a carrier of the drafting equipment, a carrier the carrying and loading arms or a strap turn bar can act. It is preferably a component which contains a bearing of the draw roll to which the draw roll motor is assigned. In particular, the stand can be arranged on a punch of the drafting system or on a roller carriage of one of the output roller upstream drafting rollers.
Das Zusammenwirken von Ständer und Läufer erfordert eine präzise axiale Lage der beiden Motorteile zueinander. Um dies zu ermöglichen, ist der Ständer zum Läufer einstellbar und justierbar am Bauteil befestigt.The interaction of the stator and rotor requires a precise axial position of the two motor parts to each other. To make this possible, the stand is adjustable to the runner and adjustable attached to the component.
Hierzu wird in weiterer Ausgestaltung der Erfindung eine Einstelllehre vorgeschlagen, mittels deren der Ständer sehr genau zum Läufer ausgerichtet und in dieser Stellung an dem dafür vorgesehenen Bauteil befestigbar ist. Bevorzugt sind zwei gleiche Einstelllehren vorgesehen, die von beiden Stirnseiten des Motors her in den Ringspalt zwischen Ständer und Läufer einführbar sind.For this purpose, a Einstelllehre is proposed in a further embodiment of the invention, by means of which the stator is aligned very precisely to the rotor and fastened in this position on the component provided for this purpose. Preferably, two identical setting gauges are provided, which are insertable from both end sides of the engine forth in the annular gap between the stator and rotor.
Um das Eindringen von Staub und Flug in einem stark durch diese Verunreinigungen belasteten Streckwerk in das Innere des Motors zu verhindern, kann der Ringspalt zwischen Ständer und Läufer mit einer Dichtung versehen sein.In order to prevent the ingress of dust and flight in a heavily loaded by these contaminants drafting into the interior of the engine, the annular gap between the stator and rotor can be provided with a seal.
Wenn der Motor in größerem Abstand von der Stanze oder einem Walzenschlitten angeordnet wird und demgemäss seine Befestigung eine große Ausladung besitzt, kann der Motor einseitig mit einem Stützlager versehen werden. Es hat nicht die Aufgabe, den Motor zu lagern, sondern nur zu verhindern, dass bei unbeabsichtigter einseitiger Belastung der Ständer mit dem Läufer in Berührung kommt.If the motor is arranged at a greater distance from the punch or a roller carriage and, accordingly, its attachment has a large projection, the motor can be provided on one side with a support bearing. It does not have the task to store the engine, but only to prevent accidental unilateral loading of the stand comes into contact with the runner.
In einer alternativen Ausführungsform sind im Drehspalt zwischen Ständer und Läufer Lager angeordnet, die schwach ausgeführt sein können, da zwischen Ständer und Läufer keine radialen oder axialen Kräfte auftreten. Hierbei bietet sich der Vorteil, dass der Ständer nicht befestigt sein und nicht justiert werden muss und den Läufer nicht berühren kann. Der Ständer muss sich nur an einem drehfesten Bauteil abstützen, um die Reaktion auf das Drehmoment aufzubringen. Hierbei kann es sich bspw. um die Haltestange von Unterriemchen-Spannbügeln handeln.In an alternative embodiment bearings are arranged in the rotary gap between the stator and rotor, which can be made weak, since no radial or axial forces occur between the stator and rotor. This offers the advantage that the stand does not have to be fixed and does not need to be adjusted and can not touch the runner. The stand only has to be supported on a non-rotatable component in order to apply the reaction to the torque. This may be, for example, to the support bar of Unterriemchen-tension brackets.
Schließlich ist es möglich, seitlich an Ständer und Läufer dünne Blechschilde anzubringen, die die axiale Länge der Bauteile nicht wesentlich erhöhen und in denen sich direkt auf der Streckwalze abstützende Lager angeordnet werden können.Finally, it is possible to attach laterally to stand and runner thin metal shields that do not significantly increase the axial length of the components and in which directly on the draw roll supporting bearing can be arranged.
In der Zeichnung sind Ausführungsbeispiele der Erfindung rein schematisch dargestellt. Dabei zeigen
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Fig. 1 die Draufsicht auf den Anfangsbereich eines Streckwerkes mit Streckwerks-Hauptantriebsvorrichtung und mit Streckwalzen-Hilfsantriebsvorrichtungen; -
Fig. 2 eine Darstellung wie inFig. 1 mit Drehzahlsteuerung der Antriebe der Streckwalzen-Hilfsantriebsvorrichtungen; -
Fig. 3 eine Darstellung wie inFig. 1 mit Hauptantrieb der Streckwalzen mittels Synchronmotoren.
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Fig. 1 the top view of the beginning of a drafting with drafting device main drive device and draw roller auxiliary drive devices; -
Fig. 2 a representation like inFig. 1 speed control of the drives of the drafting roller auxiliary drive devices; -
Fig. 3 a representation like inFig. 1 with main drive of the drafting rollers by means of synchronous motors.
In den
Der Antriebsmotor A7 wird aus dem Netz A9 mit Energie beaufschlagt. Das Netz speist auch eine Energieversorgungseinrichtung A10, die Antriebsmotoren A11 von Streckwalzen-Hilfsantriebsvorrichtungen A12 mit Energie versorgt. Die Streckwalzen-Hilfsantriebsvorrichtungen greifen mit Übertragungsgliedern A13 an den Unterwalzen A2, A3, A4 an und übertragen Drehmoment auf diese. Die Energieversorgungseinrichtung 10 ist über gesonderte Leitungen A14, A15, A16 mit den Antriebsmotoren A11 verbunden, so dass sie diese mit unterschiedlicher Speisespannung und/oder Speisefrequenz beaufschlagen kann.The drive motor A7 is energized from the network A9. The grid also powers a power supply A10 which powers drive motors A11 of draw roller auxiliary drive devices A12. The draw roller auxiliary drive devices engage and transmit torque to transfer rollers A13 on the lower rollers A2, A3, A4. The power supply device 10 is connected via separate lines A14, A15, A16 to the drive motors A11, so that they can act on these with different supply voltage and / or supply frequency.
Da die Drehzahlen der Streckwalzen A2, A3, A4 und ihre Verhältnisse zueinander exakt das Rädergetriebe A8 bestimmt werden, genügt es, wenn die Streckwalzen-Hilfsantriebsvorrichtungen A12 nur Drehmoment auf die Streckwalzen ausüben. Sie können daher in der einfachsten Ausführungsform Drehfeldmagnete sein, die die den Streckwalzen durch das Rädergetriebe A8 erteilte Drehbewegung unterstützen und dadurch Torsion der Walzen vermindern. Größeres oder geringeres Drehmoment kann durch unterschiedliche Speisespannung und/oder Speisefrequenz erreicht werden.Since the rotational speeds of the drafting rollers A2, A3, A4 and their relationships with each other are determined exactly the gearbox A8, it is sufficient if the drafting roller auxiliary drive devices A12 exert only torque on the drafting rollers. In the simplest embodiment, therefore, they can be rotary field magnets which assist the rotational movement imparted to the drafting rollers by the gearbox A8 and thereby reduce the torsion of the rollers. Greater or lesser torque can be achieved by different supply voltage and / or supply frequency.
In der Ausführungsform der
In diesem Ausführungsbeispiel ist auch dargestellt, dass die Bestückung der verschiedenen Streckwalzen A2, A3, A4 mit Streckwalzen-Hilfsantriebsvorrichtungen A12 unterschiedlich sein kann. Es wird davon ausgegangen, dass die Torsion der mittleren Unterwalze A3 höher ist als die der anderen, da sie die gleitend über Umlenkungen geführten Unterriemchen schleppen muss. Sie ist daher beispielsweise an jeder zweiten Stanze A5 mit einer Streckwalzen-Hilfsantriebsvorrichtungen A12 versehen, während die anderen Unterwalzen beispielsweise nur an jeder dritten Stanze eine solche aufweisen.In this embodiment, it is also illustrated that the population of the various drafting rollers A2, A3, A4 may be different with drafting roller auxiliary drive devices A12. It is believed that the torsion of the middle lower roll A3 is higher than that of the others, as it must tow the slips that are slidingly guided over deflections. It is therefore, for example, provided on every second punch A5 with a draw roller auxiliary drive devices A12, while the other bottom rollers, for example, only on every third punch such.
In der Ausführungsform der
- A1A1
- Streckwerkdrafting system
- A2, A3, A4A2, A3, A4
- Unterwalzenbottom rollers
- A5A5
- Stanzenpunch
- A6A6
- Streckwerks-HauptantriebsvorrichtungDrawing frame main driving device
- A7A7
- Antriebsmotordrive motor
- A8A8
- Rädergetriebegearing
- A9A9
- Netznetwork
- A10A10
- EnergieversorgungseinrichtungPower supply means
- A11A11
- Antriebsmotorendrive motors
- A12A12
- Streckwalzen-HilfsantriebsvorrichtungenDrawing rollers auxiliary drive devices
- A13A13
- Übertragungsgliedertransmission members
- A14, A15, A16A14, A15, A16
- Leitungencables
In den
-
Fig. 4 die Draufsicht auf einen Abschnitt eines Streckwerkes; -
Fig. 5 die Vorderansicht des Streckwerkes derFig. 4 ; -
Fig. 6 die Vorderansicht einer Variante eines Streckwerkes; -
Fig. 7 die Vorderansicht einer weiteren Variante eines Streckwerkes.
-
Fig. 4 the top view of a portion of a drafting system; -
Fig. 5 the front view of the drafting of theFig. 4 ; -
Fig. 6 the front view of a variant of a drafting system; -
Fig. 7 the front view of another variant of a drafting system.
In
Wie aus
Das Stirnradgetriebe B14/B16 einer Streckwalzen-Hilfsantriebsvorrichtung B13 ist vorteilhaft in einem staubdichten Gehäuse B17 untergebracht.The spur gear B14 / B16 of a draw roller auxiliary drive device B13 is advantageously accommodated in a dust-tight housing B17.
Die dem Mittelwalzenpaar B2/B8 zugeordnete Streckwalzen-Hilfsantriebsvorrichtung B13 ist rechts der Stanze B5 an dem diesem Walzenpaar zugeordneten Walzenschlitten befestigt und greift neben der Zwillingsoberwalze B8 an der Unterwalze B2 an. Dadurch wird vermieden, dass die Übertragungsglieder B15 der beiden, einander benachbarten Unterwalzen zugeordneten Streckwalzen-Hilfsantriebsvorrichtungen B13 sich gegenseitig behindern, wenn die Walzenpaare B2/B8 und B3/B9 auf geringen Abstand zueinander zusammen gerückt werden.The draw roller auxiliary drive device B13 assigned to the middle roller pair B2 / B8 is fastened to the right of the punch B5 on the roller carriage assigned to this roller pair and engages the bottom roller B2 in addition to the twin top roller B8. Thereby, it is avoided that the transfer members B15 of the two draw roller auxiliary drive devices B13 associated with each other adjacent lower rollers interfere with each other when the roller pairs B2 / B8 and B3 / B9 are brought close to each other at a small distance.
Die dem Eingangswalzenpaar B1/B7 zugeordnete Streckwalzen-Hilfsantriebsvorrichtung B13 ist wieder links der Stanze B5 an dem diesem Walzenpaar zugeordneten Walzenschlitten angeordnet. Die Anordnung an den Walzenschlitten bietet den Vorteil, dass die Streckwalzen-Hilfsantriebsvorrichtungen B13 bei einem Verstellen des Walzenabstandes mitwandern und keines gesonderten Einstellens bedürfen.The draw roller auxiliary drive device B13 assigned to the input roller pair B1 / B7 is again arranged to the left of the punch B5 on the roller carriage assigned to this roller pair. The arrangement on the roller carriage has the advantage that the draw roller auxiliary drive devices B13 migrate with an adjustment of the roll spacing and require no special adjustment.
Die Übertragungsglieder B15 der Streckwalzen-Hilfsantriebsvorrichtungen B13 sind so schmal ausgebildet, dass sie zwischen benachbarten Riffelfeldern B18 einer Streckwalze an dieser angreifen können, ohne dass ein Riffelfeld und damit eine Arbeitsstelle des Streckwerkes entfallen müsste.The transfer members B15 of the draw roller auxiliary drive devices B13 are designed so narrow that they can engage between adjacent Riffelfeldern B18 a draw roller to this without a rifflange and thus a job of the drafting would have to be omitted.
Dadurch, dass die Streckwalzen-Hilfsantriebsvorrichtungen B13 infolge ihrer schmalen Bauweise zwischen nahezu beliebigen Arbeitsstellen eines Streckwerkes einfügbar sind, ergibt sich der Vorteil, dass sie klein und mit geringer Leistung ausgeführt werden können. Eine erforderliche Leistung kann durch entsprechende Stückzahl erreicht werden.Due to the fact that the drafting roller auxiliary drive devices B13 can be inserted as a result of their narrow construction between virtually any desired work stations of a drafting system, there is the advantage that they can be made small and with low power. A required performance can be achieved by appropriate number of pieces.
Es bietet sich auch der Vorteil, dass die an einer Unterwalze B1, B2, B3 anzubringenden Streckwalzen-Hilfsantriebsvorrichtungen B13 in ihrer Stückzahl auf die Tendenz der Streckwalze zur Torsion abgestellt werden kann. Es werden keine nicht mit voller Leistung laufende Streckwalzen-Hilfsantriebsvorrichtungen eingesetzt.There is also the advantage that the draw roller auxiliary drive devices B13 to be attached to a lower roller B1, B2, B3 can be adjusted in their number of units to the tendency of the draw roller to torsion. There is no use of full-performance drafting roller auxiliary drive devices.
In manchen Fällen ist der dem Teilungsabstand T der Ringspinnmaschine entsprechende Abstand zwischen zwei Arbeitsstellen eines Streckwerkes B4 zu gering, um das Eingreifen des Übertragungsgliedes B15 einer Streckwalzen-Hilfsantriebsvorrichtung B13 zu ermöglichen. In solchen Fällen können, wie aus
Dabei kann der Teilungsabstand der Arbeitsstellen der Ringspinnmaschine bezogen auf den Teilungsabstand T ihrer Spindeln B19 unverändert bleiben, es entfällt auch in diesem Falle keine Arbeitsstelle. Einer der Fäden B20 läuft dabei geringfügig schräg auf seinen Fadenführer B21 zu.In this case, the pitch of the jobs of the ring spinning machine relative to the pitch T of their spindles B19 remain unchanged, it also eliminates in this case no job. One of the threads B20 runs slightly obliquely towards its yarn guide B21.
Wie aus
- B1B1
- Unterwalzebottom roll
- B2B2
- Unterwalzebottom roll
- B3B3
- Unterwalzebottom roll
- B4B4
- Streckwerkdrafting system
- B5B5
- Stanzepunch
- B6B6
- Belastungsarmloading arm
- B7B7
- OberwalzenzwillingTop roller twin
- B8B8
- OberwalzenzwillingTop roller twin
- B9B9
- OberwalzenzwillingTop roller twin
- B10B10
- Riemchen-WendeschieneStrappy turning rail
- B11B11
- Armpoor
- B12B12
- Antriebsmotordrive motor
- B13B13
- Streckwalzen-HilfsantriebsvorrichtungDrawing rollers auxiliary driving device
- B14B14
- Stirnzahnradspur gear
- B15B15
- Übertragungsgliedtransmission member
- B16B16
- Stirnzahnradspur gear
- B17B17
- Gehäusecasing
- B18B18
- Riffelfeldcorrugated box
- B19B19
- Spindelnspindles
- B20B20
- Fädenthreads
- B21B21
- Fadenführerthread guides
In den
-
Fig. 8 die Ansicht eines Abschnittes eines Streckwerkes mit in einen Walzenstrang eingefügtem, geschnittenen dargestellten Streckwalzenmotor; -
Fig. 9 eine Variante der Ausführungsform derFig. 8 ; -
Fig. 10 eine weitere Variante des Streckwalzenmotors mit Lagern; -
Fig. 11 noch eine weitere Variante des Streckwalzenmotors mit Lagern; -
Fig. 12 eine Einzelheit der Streckwalzenmotoren; -
Fig. 13 eine Lehre zum zentrischen Einstellen der Ständers zum Läufer.
-
Fig. 8 the view of a section of a drafting system with inserted in a roll train, cut shown draw roller motor; -
Fig. 9 a variant of the embodiment of theFig. 8 ; -
Fig. 10 Another variant of the drafting roller motor with bearings; -
Fig. 11 yet another variant of the drafting roller motor with bearings; -
Fig. 12 a detail of the draw roll motors; -
Fig. 13 a lesson for centric adjustment of the stand to the runner.
Wie aus
Der Streckwalzenmotor C1 weist einen Läufer C7 und einen Ständer C8 auf. Der Läufer C7 ist auf der Streckwalze C6 befestigt. Dies kann - wie in
In
Der Läufer C7 ist so lang, dass seine Stirnseiten unmittelbar an den anschließenden Riffelfeldern C2, C3 anliegen. Der verfügbare Raum zwischen den benachbarten Riffelfeldern wird durch die Drehmoment aufbringenden Teile Ständer C8 und Läufer C7 also maximal ausgenutzt.The runner C7 is so long that its end faces abut directly on the subsequent Riffelfeldern C2, C3. The available space between the adjacent Riffelfeldern is thus maximally utilized by the torque-applying parts stator C8 and rotor C7.
In der Ausführungsform der
Es versteht sich aber, dass der Ständer auch mit einem anderen, ortsfesten, nicht drehbaren Bauteil verbunden sein kann. So kann etwa das Streckwerk mit einer gesonderten Haltevorrichtung für die Ständer C8 versehen werden.It is understood, however, that the stand can also be connected to another, stationary, non-rotatable component. For example, the drafting system can be provided with a separate holding device for the stands C8.
Der Streckwalzenmotor C1 selbst weist wie erwähnt keine eigenen Lager auf. Der Läufer C7 ist auf der drehbaren Streckwalze C6 befestigt, der Ständer C8 an einem Bauteil C15, das vorteilhafter Weise mit einem Lager C16 der Streckwalze C6, der der Streckwalzenmotor zugeordnet ist, in fester Verbindung steht. Die Streckwalzen von Ringspinnmaschinen weisen einen so geringen Schlag auf, dass auch auf diese Weise ein sehr enger Spalt zwischen Ständer C8 und Läufer C7 möglich und ein genauer Rundlauf des Streckwalzenmotors sicher gestellt ist.The draw roller motor C1 itself, as mentioned, does not have its own bearings. The traveler C7 is mounted on the rotary draw roll C6, the stand C8 is fixed to a component C15 which is advantageously in firm contact with a bearing C16 of the draw roll C6 associated with the draw roll motor. The draw rolls of ring spinning machines have such a small impact that even in this way a very narrow gap between the stator C8 and rotor C7 is possible and an accurate concentricity of the drafting roller motor is ensured.
Es ist allerdings erforderlich, den Ständer C8 exakt axial zum Läufer C7 einzustellen. Hierzu ist eine in
Insbesondere die Baumwolle verarbeitenden Streckwerke sind stark durch Kurzfasern und Staub belastet. Damit dieser Flug nicht in das Innere des Motors C1 eindringt, können rund um die beiden Spalte C20 zwischen Ständer C8 und Läufer C7 Dichtungen C22 vorgesehen sein. Die Dichtungen sind bevorzugt als Filzring ausgebildet und können in Nuten C23 der Ständers oder des Läufers liegen.In particular, the cotton processing drafting systems are heavily burdened by short fibers and dust. So that this flight does not penetrate into the interior of the engine C1, seals C22 can be provided around the two gaps C20 between stator C8 and rotor C7. The seals are preferably formed as a felt ring and can lie in grooves C23 of the stator or the rotor.
Der Streckwalzenmotor C1 kann nicht unmittelbar neben dem Bauteil Stanze C15 angeordnet werden, da sich dort ein Riffelfeld befindet. Er kann zwischen den beiden durch die ersten Oberwalzen-Zwillinge C24 neben der Stanze bedienten Arbeitsstellen an einer Streckwalze C6 angreifen und sitzt dazu an dem kurzen Distanzstück C13. Da er hierbei jedoch in vielen Fällen in den Bereich der Achsen der Oberwalzen-Zwillinge C24 bzw. des Oberwalzentrag- und Belastungsarms C25 eingreift, muss er häufig in ein Zwischen-Riffelfeld weiter gerückt werden. Dafür ist dann ein langes Distanzstück C26 erforderlich, das den Streckwalzenmotor weit auskragen lässt. In diesen Fällen kann ein Abstand haltendes Lager C27 zwischen dem Ständer C8 und dem Läufer C7 vorgesehen sein, das ein Berühren empfindlicher Teile des Streckwalzenmotors bei unbeabsichtigter einseitiger Belastung des Ständers C8 verhindert. Das Abstandslager C27 dient nicht zur Lagerung des Läufers C7 im Ständer oder des Ständers 8 am Läufer, sondern nur zum Einhalten des Abstandes bzw. Spaltes C20 zwischen Ständer und Läufer.The drafting roller motor C1 can not be arranged directly next to the punching element C15, since there is a corrugated field there. He can attack between the two by the first top roller twins C24 next to the punch operated jobs on a drafting roller C6 and sits on the short spacer C13. However, since he often intervenes in the area of the axes of the upper roller twins C24 or the Oberwalzentrag- and loading arm C25, he often has to be moved into an intermediate riffler field on. For this purpose, a long spacer C26 is required, which can project the drafting roller engine far. In these cases, a clearance bearing C27 may be provided between the stator C8 and the rotor C7, which prevents touching sensitive parts of the drafting roller motor in case of unintentional one-sided loading of the stator C8. The spacer bearing C27 is not used to support the rotor C7 in the stator or the stator 8 on the rotor, but only to comply with the distance or gap C20 between the stator and rotor.
In
Der auf dem Läufer C7 gelagerte Ständer C8 muss sich zum Aufbringen der Reaktionskraft des Streckwalzenmotors C1 an einem drehfesten Bauteil abstützen. In
Nach
Die Erfindung kann mit allen, für den Antrieb von Streckwalzen in Frage kommenden Typen von Elektromotoren verwirklicht werden: Synchron- und Reluktanzmotoren, drehzahlgeregelte oder nicht drehzahlgeregelte Asynchronmotoren, Schrittschaltmotoren, Drehmagnete. Die Speisung ihrer Ständer erfolgt zur Drehzahlanpassung vorzugsweise mit gesteuerter Frequenz. In der Regel enthält der Ständer Erregerwicklungen, der Läufer Permanentmagnete, die in den Figuren nicht im Einzelnen dargestellt sind, Läufer C7 und Ständer C8 sind in den Figuren nur durch Schraffur angedeutet.The invention can be practiced with all types of electric motors suitable for driving drafting rollers: synchronous and reluctance motors, variable speed or non-speed controlled asynchronous motors, stepping motors, rotary solenoids. The feeding of their stand is done for speed adjustment, preferably with controlled frequency. In general, the stator includes field windings, the rotor permanent magnets, which are not shown in detail in the figures, rotor C7 and stator C8 are indicated in the figures only by hatching.
- C1C1
- StreckwalzenmotorDraw roll motor
- C2C2
- Riffelfeld einer UnterwalzeRiffelfeld a Unterwalze
- C3C3
- Riffelfeld einer UnterwalzeRiffelfeld a Unterwalze
- C4C4
- Unterwalzen-AbschnittUnder reel section
- C5C5
- Unterwalzen-AbschnittUnder reel section
- C6C6
- Unterwalzebottom roll
- C7C7
- Läufer des StreckwalzenmotorsRunner of the drafting roller motor
- C8C8
- Ständer des StreckwalzenmotorsStand of the drafting roller motor
- C9C9
- zylindrischer Zapfen am Unterwalzen-Abschnittcylindrical pin on the lower roller section
- C10C10
- Gewindezapfen am Unterwalzen-AbschnittThreaded pin on the lower roller section
- C11C11
- Haltezapfen am Läufer 7Retaining pin on the rotor 7
- C12C12
- Lasche am Ständer 8Tab on the stand 8
- C13C13
- Distanzstückspacer
- C14C14
- Mittelliniencenterlines
- C15C15
- ortsfestes Bauteilstationary component
- C16C16
- Lager der Unterwalze 6Bearing of the lower roller 6
- C17C17
- EinstelllehreEinstelllehre
- C18C18
- GriffHandle
- C19C19
- kreisförmiger Armcircular arm
- C20C20
- Spalt zwischen Läufer 7 und Ständer 8Gap between rotor 7 and stator 8
- C21C21
- Laschentabs
- C22C22
- Dichtung im Spalt 20Seal in the gap 20
- C23C23
- Nut für die Dichtung 22Groove for the seal 22
- C24C24
- Oberwalzen-ZwillingTop rollers twin
- C25C25
- Oberwalzentrag- und BelastungsarmOberwalzentrag- and load arm
- C26C26
- Langes DistanzstückLong spacer
- C27C27
- Abstandslager im Streckwalzenmotor 1Spacer bearing in the draw roller motor 1
- C28C28
- Lagercamp
- C29C29
- Haltestange der RiemchenspannbügelHandrail of strapping clamp
- C30C30
- RiemchenspannbügelRiemchenspannbügel
- C31C31
- Endschildeend shields
- C32C32
- Lagercamp
Claims (19)
- A ring spinning frame with drawing frames with a plurality of draft rollers, the top rollers of which comprise twin top rollers loaded by means of support and loading arms and whereby each drawing frame includes a plurality of drawing frame auxiliary drive units spaced apart at intervals characterised in that the interval (t1) between two adjacent work surfaces of the drawing frame arranged in a longitudinal direction along the drawing frame (B4), in which the drawing frame auxiliary drive units (B13) engages a bottom roller (B3), is increased such that the interval (t2) to the next adjacent work surface of the drawing frame is reduced such that the entire interval of the three adjacent work surfaces corresponds to twice the normal interval (T) of two of the work surfaces.
- A ring spinning frame with drawing frames with a plurality of draft rollers, the top rollers of which comprise twin top rollers loaded by means of support and loading arms and whereby each drawing frame includes a plurality of drawing frame auxiliary drive units spaced apart at intervals characterised in that the interval (t3) between two adjacent work surfaces of the drawing frame arranged in a longitudinal direction along the drawing frame (B4), in which the drawing frame auxiliary drive units (B13) engages a bottom roller (B3), is increased such that the interval (t4) to the two adjacent work surface of the drawing frame is reduced such that the entire interval of the four adjacent work surfaces corresponds to three-times the normal interval (T) of two of the work surfaces.
- A ring spinning frame according to claims 1 or 2, characterised in that the drawing frame auxiliary drive units (B13) engage between the work surfaces on drawing frames (B1, B2, B3) that are arranged in an offset manner in a longitudinal direction along the ring spinning frame.
- A ring spinning frame according to one of claims 1 to 3 with support bearings supporting the drawing frames and drawing frame carriages, characterised in that the drawing frame auxiliary drive units (B13) are affixed to the support bearings (B5) and/or on the moveable drawing frame carriages in the support bearings.
- A ring spinning frame according to of claim 4, characterised in that the drawing frames (B1/B2, B2/B3) adjacent to the drawing frame auxiliary drive units (B13) are arranged left and right on a support bearing (B5) and on the moveable drawing frame carriages in the support bearings.
- A ring spinning frame according to one of claims 1 to 5, characterised in that the drawing frame auxiliary drive units (B13) and/or the transmission members (B15) are arranged on the drawing frames (B1, B2, B3) preferably in a dust-tight housing (B17).
- A ring spinning frame with a drawing frame motor for drawing frames in the ring spinning frame with stators and rotors to be arranged on and between drawing frames, characterised in that the drawing frame motor is arranged between two adjacent riffle fields (C2, C3) of a drawing frame (C6) and at an interval to one adjacent drawing frame and that bearing plates are not used in that the rotor (C7) of the drawing frame motor (C1) is affixed directly to the drawing frame (C6) to which it is associated and the stator (C8) of the motor (C1) in affixed and/or supported by a non-rotating component (C15, C29) of the drawing frame.
- A ring spinning frame according to claim 7, characterised in that the rotor (C7) of the drawing frame motor (C1) is affixed directly to the drawing frame (C6) to which it is associated and the drawing frame motor (C1) includes only a bearing (C27) that maintains the interval within the rotation gap (C20) between the stator (C8) and the rotor (C7) as a result of which contact between the stator and the rotor is prevented.
- A ring spinning frame according to claim 7, characterised in that the rotor (C7) of the drawing frame motor (C1) is affixed directly to the drawing frame (C6) to which it is associated and the drawing frame motor (C1) includes a bearing (C28) in the gap (C20) between stator (C8) and rotor (C7) which supports the stator on the rotor and whereby the drawing frame motor is supported by a non-rotating component (C29) of the drawing frame.
- A ring spinning frame according to claim 7, characterised in that the rotor (C7) of the drawing frame motor (C1) is affixed directly to the drawing frame (C6) to which it is associated and the drawing frame has a reduced diameter (d) in the area where the rotor is affixed to it.
- A ring spinning frame according to claim 10, characterised in that a frame thread section (C4) of the drawing frame (C6) includes a cylindrical intake (C9) to fasten the rotor (C7) of the drawing frame motor (C1) between two riffle fields (C2, C3) and may be screwed into an adjoining frame section (C5) by means of threading (C10) located on the cylindrical intake.
- A ring spinning frame according to claim 10, characterised in that the rotor (C7) of the drawing frame motor (C1) includes retaining pins (C11) protruding on both sides that may be inserted into frame thread sections (C4, C5) using adjoining drill holes.
- A ring spinning frame according to claim 8, characterised in that the non-rotating component (C15) includes a bearing (C16) for the drawing frame (C6).
- A ring spinning frame according to claim 9, characterised in that the non-rotating component is a punch (C15) of the drawing frame or is a frame carriage located in a punch.
- A ring spinning frame according to claim 8, characterised in that the component is a rod (C29) that holds the bottom apron clamp (C30).
- A ring spinning frame according to claim 8, characterised in that the component is a bottom apron tilting bar serves as the non-rotating component.
- A ring spinning frame according to claim 7, characterised in that the rotor (C7) and the stator (C8) occupy as much of the clearance between the two adjacent riffle fields (C2, C3) of a drawing frame (C6) as possible.
- A ring spinning frame according to claim 8, characterised in that the stator (C8) of the motor (C1) may be adjusted laterally and is moveable coaxially to the rotor on a component (C15) arranged on a bearing (C16) of the drawing frame (C6).
- A ring spinning frame according to one or more of claims 7-18, characterised in that seals (C22) are arranged in the gaps (C20) between the stator (C8) and the rotor (C7) that prevent the entry of dust and debris into the interior of the motor (C1).
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510054817 DE102005054817A1 (en) | 2005-11-15 | 2005-11-15 | Ring spinning machine comprises drawframes whose draw rollers are driven by a main drive unit and have auxiliary drive units distributed along their length |
DE200510054826 DE102005054826B4 (en) | 2005-11-15 | 2005-11-15 | Ring spinning machine with drafting units |
DE200510054818 DE102005054818A1 (en) | 2005-11-15 | 2005-11-15 | Stretching roller motor used in spinning machines, has increased rotor and stator length, reduced stator external diameter and increased torque |
PCT/EP2006/010889 WO2007057148A2 (en) | 2005-11-15 | 2006-11-14 | Ring spinning frame comprising drawing systems |
Publications (2)
Publication Number | Publication Date |
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EP1948855A2 EP1948855A2 (en) | 2008-07-30 |
EP1948855B1 true EP1948855B1 (en) | 2018-08-29 |
Family
ID=37685137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06818513.1A Not-in-force EP1948855B1 (en) | 2005-11-15 | 2006-11-14 | Ring spinning frame comprising drawing systems |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1948855B1 (en) |
JP (1) | JP5189492B2 (en) |
WO (1) | WO2007057148A2 (en) |
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DE102015010854A1 (en) | 2015-08-19 | 2017-02-23 | Saurer Germany Gmbh & Co. Kg | Spinning machine with a plurality of juxtaposed drafting systems |
DE102018102232A1 (en) * | 2018-02-01 | 2019-08-01 | Saurer Spinning Solutions Gmbh & Co. Kg | Double-sided ring spinning machine with drafting units |
IT201900003983A1 (en) | 2019-03-19 | 2020-09-19 | Marzoli Machines Textile Srl | STRAP YARN |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2641434B2 (en) * | 1976-09-15 | 1979-04-26 | Zinser Textilmaschinen Gmbh, 7333 Ebersbach | Long spinning machine |
DE4014608C1 (en) * | 1990-05-07 | 1991-11-14 | Zinser Textilmaschinen Gmbh, 7333 Ebersbach, De | Slow running direct drive for spinning machine - incorporates multiphase slip-ring rotor engine where stator coils have 1st frequency converter and rotor coils have 2nd frequency converter |
DE10040420A1 (en) * | 2000-08-18 | 2002-02-28 | Rieter Ag Maschf | Sliver drawing unit, for a ring spinner, has a number of lower cylinder assemblies each with a number of drive points between their end bearing mountings for a trouble-free operation without torsion problems |
-
2006
- 2006-11-14 WO PCT/EP2006/010889 patent/WO2007057148A2/en active Application Filing
- 2006-11-14 EP EP06818513.1A patent/EP1948855B1/en not_active Not-in-force
- 2006-11-14 JP JP2008539360A patent/JP5189492B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1948855A2 (en) | 2008-07-30 |
WO2007057148A3 (en) | 2007-07-26 |
JP5189492B2 (en) | 2013-04-24 |
JP2009516085A (en) | 2009-04-16 |
WO2007057148A2 (en) | 2007-05-24 |
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