EP0828872A1 - Antrieb für friktionsspindelaggregate - Google Patents
Antrieb für friktionsspindelaggregateInfo
- Publication number
- EP0828872A1 EP0828872A1 EP96914139A EP96914139A EP0828872A1 EP 0828872 A1 EP0828872 A1 EP 0828872A1 EP 96914139 A EP96914139 A EP 96914139A EP 96914139 A EP96914139 A EP 96914139A EP 0828872 A1 EP0828872 A1 EP 0828872A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spindle
- friction
- drive shaft
- spindles
- spindle unit
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/04—Devices for imparting false twist
- D02G1/08—Rollers or other friction causing elements
- D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc
Definitions
- the present invention relates to a friction spindle unit with three shafts rotatably mounted on a base element in the corner points of an isosceles triangle, to which overlapping friction disks are fastened in the center of the isosceles triangle.
- Such an assembly is known for example from DE-U 75 25 192.
- a tangential belt which drives this spindle, engages on an axial extension of one of the three spindles.
- Each spindle has a pulley with one strap engaging all of the pulleys. This ensures that all three spindles rotate at the same speed.
- the flat belts are used at maximum speed up to 25 m / sec. driven to the previously usual spindle speed of approx. 20,000 revolutions / min. to reach. The higher spindle speeds desired by the users cannot be achieved with such a friction spindle unit.
- the invention is based on the object of developing a generic friction spindle unit in such a way that higher spindle speeds are achieved or that, in particular when driving by means of a flat belt between the flat belt and the spindles, translations are possible which enable these increased spindle speeds.
- this object is achieved in that a drive shaft which is rotatable about the center of the isosceles triangle and is arranged axially parallel to the shafts is provided between the and each spindle means are provided for power transmission.
- the drive shaft is used as a transmission element to achieve a rapid translation from the drive to the output.
- the drive shaft itself can be driven, for example, by the flat belt, the increased spindle speeds being achieved by the selection of suitable transmission ratios between the drive shaft and each spindle.
- Another significant advantage of the invention is the improved distribution of drive power.
- the spindle driven by the flat belt drives the other two spindles via the belt.
- the apron intended for power transmission must therefore take up 2/3 of the total drive power.
- the means provided for power transmission per spindle only take up 1/3 of the total drive power, since these means according to the invention are provided between the drive shaft and each spindle.
- each spindle meshes with its first spur toothing with a second spur toothing provided on the drive shaft.
- Such a transmission makes it possible to omit the apron known from the prior art.
- each spindle rolls with its friction wheel on the outer surface of the drive shaft.
- the drive shaft will be made small in diameter where it is encompassed by the flat belt, and large in diameter where the friction wheels engage, the diameter of said friction wheels being chosen to be small.
- the drive shaft is formed as a hollow shaft into which the spindles are immersed, the required gear ratios can be set in a particularly favorable manner. With this design too, the diameter of the drive shaft will be small where the flat belt engages. Where the spindles immerse in the hollow shaft, the inside diameter of the hollow shaft is expediently much larger than where the flat belt engages.
- the spindles can, as already described above, be provided with spur gears or friction wheels, the Hollow shaft is optionally provided on its inner diameter with the second spur toothing.
- a magnetic coupling is provided between each spindle and the drive shaft.
- Magnetic clutches per se have been known for some time, which enable power transmission between two shafts.
- Application examples with a description of the structure and effect of the magnetic couplings are disclosed, for example, in the catalog "Magnetfabrik Bonn, Physikalischen Fundamentals and Range of Services" of the company of the same name and located in Bonn.
- the arrangement of the drive shaft according to the invention enables the use of magnetic couplings of this type which can transmit the relatively small torques without problems.
- Magnetic clutches of this type offer the advantage, for example, that the power transmission takes place without contact, that is to say with little noise and vibration.
- gear ratios are also expediently selected, as described above.
- This magnetic coupling can be constructed in accordance with claim 7 in such a way that a first permanent magnet arranged on the circumference of the drive shaft is provided, to which a second permanent magnet arranged on the circumference of each spindle lies radially opposite, the permanent magnets being poled radially.
- the drive shaft can be arranged between the spindles, but also - if it is designed as a hollow shaft - the spindles.
- the annular gap that arises between the first and second permanent magnets is calculated easy to determine on the basis of the parameters of the permanent magnets and the geometric conditions.
- both coupling halves - the drive shaft and the relevant spindle - must first be brought to a standstill for synchronization. However, this is undesirable in operation. To avoid this stopping, the torque is mechanically transmitted, as already stated above, and until the spindle in question and the drive shaft run synchronously again. At this moment, the magnetic coupling again takes over the power transmission, the means provided for the mechanical power transmission running with no load.
- every second spur toothing of each spindle meshes with a spur gear rotatably mounted in the center of the isosceles triangle.
- This arrangement is particularly useful when the power transmission is frictional or by means of the magnetic clutch described. With the arrangement described it is ensured that the three spindles always run synchronously.
- the drive shaft is designed as a hollow shaft, it is expediently made pot-shaped and in particular in the deep-drawing process, with a sleeve axially pulled out of the plane of the pot bottom being provided in the center of its pot base, which can be rotated on an axis fastened in the center of the base element is stored. Then, for example, the flat belt for driving the drive shaft engages on the outer circumference of the sleeve.
- a further inventive development of the generic friction spindle unit consists, according to claim 10, in that each spindle is driven by an electric motor. With such an arrangement, the previously customary flat belts can be dispensed with entirely.
- the three spindles can be connected to one another in a non-positive or positive manner, as described in the preceding claims.
- FIG. 1 shows a longitudinal section through a friction spindle unit according to the invention
- Figure 2 shows a longitudinal section through a further inventive
- FIG. 3 shows a cross section of the exemplary embodiment according to FIG. 2 along the line III-III
- FIG. 4 shows a longitudinal section through a further friction spindle unit according to the invention
- FIG. 5 shows a cross section through the exemplary embodiment according to FIG. 4 along the line V-V
- FIG. 6 shows a longitudinal section through a further friction spindle unit according to the invention
- FIG. 8 shows a cross section through the exemplary embodiment from FIG. 7 along the line VIII-VIII
- FIG. 9 shows a longitudinal section through a further friction spindle unit according to the invention
- Figure 10 shows a cross section through the embodiment of Figure 9 along the line XX
- FIG. 11 shows a longitudinal section through a further friction spindle unit according to the invention
- FIG. 12 shows a longitudinal section through a further friction spindle unit according to the invention
- FIG. 13 shows a top view of the exemplary embodiment from FIG. 12,
- FIG. 14 shows a longitudinal section through a further friction spindle unit according to the invention
- Figure 15 shows a cross section through the embodiment of Figure
- FIG. 1 shows in longitudinal section a first friction spindle unit according to the invention.
- Spacers 2 and friction disks 3 are alternately arranged on three spindles 1 and braced axially with one another.
- the spindles 1 are arranged in the corner points of an isosceles triangle and axially parallel to one another, as can be seen for example from FIG. 3.
- the three spindles 1 are each rotatably supported in a base element 4 at two axially adjacent locations.
- An upper deep groove ball bearing 5 and a lower deep groove ball bearing 6 are provided for mounting each spindle 1, the upper deep groove ball bearing 5 having a damping ring 7 which is arranged between the base element 4 and an outer race 8 of the upper deep groove ball bearing 5.
- the spindles 1 With their lower ends, the spindles 1 are immersed in a hollow cylindrical, pot-shaped drive shaft 9, which is manufactured using the deep-drawing process.
- a pot base 10 of the drive shaft 9 has a sleeve 11 drawn axially out of the plane of the pot base 10 and directed outwards, which is rotatably mounted on an axis 12 fastened in the center of the base element 4 by means of two axially adjacent deep groove ball bearings 13.
- the spindles 1 wear their lower ends each have a friction disk 14, which are each pressed onto the inner circumference of the hollow cylindrical drive shaft 9.
- On the outer circumference of the sleeve 1 1 engages a flat belt 15 for driving the drive shaft 9.
- each spindle 1 additionally has a toothed pulley 16, a toothed belt 17 comprising the three spindles 1 being placed on each toothed pulley 16.
- the sleeve 11 is directed inwards, the flat belt engaging on the outer circumference of the hollow cylindrical drive shaft 9.
- FIG. 3 shows a cross section through the exemplary embodiment from FIG. 2, it being clearly evident that the three spindles 1 are arranged in the corner points of an isosceles triangle.
- the exemplary embodiment according to FIG. 4 differs from that from FIG. 2 only in that the friction disks 14 are not arranged at the lower end of the spindles 1 as in FIG. 2, but between the upper deep groove ball bearing 5 and the lower deep groove ball bearing 6.
- the cross section according to FIG. 5 clearly shows the arrangement of the spindles 1, a part of the cross-sectioned basic element 4 being additionally visible here.
- the exemplary embodiment according to FIG. 6 differs from that from FIG. 2 essentially in that the drive shaft 9 is not rotatably mounted on an axis fastened to the base element 4. Instead, the sleeve 1 1 additionally has a shaft journal 18 which is fastened in the sleeve 1 1.
- This shaft journal 18 can be driven, for example, by the flat belt, not shown, but also by an electric motor, also not shown.
- the exemplary embodiment according to FIG. 7 differs from that from FIG. 4 essentially by two features, only the lower deep groove ball bearing 6 being shown in FIG.
- the sleeve 1 1 of the drive shaft 9 is unlike in FIG. 4, not pulled out axially inward, but axially outwardly, the flat belt 15 engaging the outer circumference of the sleeve 11.
- the second essential difference from the exemplary embodiment according to FIG. 4 is that a magnetic clutch 19 is provided instead of power transmission by means of friction disks.
- This magnetic coupling 19 consists essentially of outer and inner permanent magnets 20, 21.
- the outer permanent magnets 20 are fastened to the drive shaft 9.
- the inner permanent magnets 21 are arranged radially adjacent to each spindle.
- the polarity of the outer and inner permanent magnets 20, 21 is aligned radially. There is an air gap between the permanent magnets 20, 21
- the exemplary embodiment according to FIG. 9 differs from that from FIG. 7 essentially by two features.
- the magnetic coupling 19 is provided at the lower ends of the spindles 1, in contrast to the exemplary embodiment according to FIG. 7.
- FIG. 10 shows the arrangement of the radially polarized permanent magnets 20, 21.
- the embodiment of Figure 1 1 differs from that of Figure 2 essentially by two features.
- the drive shaft 9 is tubular, the tubular drive shaft 9 being arranged between the three spindles 1.
- the friction disks 14 of the spindles 1 are pressed against the outer circumference of the tubular drive shaft 9.
- the second The distinguishing feature relates to the modified additional positive coupling between the three spindles 1.
- the three spindles 1 each have a spur gear 25 which is connected to the spindle 1 in a rotationally fixed manner.
- Another spur gear 26 arranged in the center of the isosceles triangle is rotatably mounted on the axis 12 via a slide bearing 27. All three spur gears 25 mesh with the spur gear 26.
- the embodiment according to FIG. 12 differs from that shown in FIG. 6 essentially by the following features:
- the drive shaft 9 also represents the output shaft of an electric motor 25.
- the drive shaft here 9 a spur gear 29 engaging between the three spindles 1, with which spur gears 30 mesh, one of which is attached to each spindle 1.
- an additional synchronization device as is provided in the exemplary embodiment according to FIG. 6, is omitted because of the positive power transmission.
- FIG. 13 shows the top view of the friction spindle unit according to the invention according to FIG. 12.
- three spindles 32 rotatably mounted on a base element 31 in the corner points of an isosceles triangle are provided.
- one upper and one axially adjacent lower deep groove ball bearing 33, 34 are provided per spindle 1, which are supported on the base element 31.
- a damping ring 36 for vibration damping is provided between an outer ring 35 of the upper deep groove ball bearing 33 and the base element 31.
- the spindles 32 are each connected to a small electric motor 37.
- the three electric motors have a common stator housing 38 which - as can be seen better in FIG. 15 - has a stator bore 39 for each spindle 1.
- Each stator bore 39 is with Excitation windings and pole shoes provided, which are symbolically represented in Figure 15 by the annulus with the position number 40.
- Runners formed from radially polarized permanent magnets are fastened to the lower ends of the spindles 32 and are symbolically represented in FIGS. 14, 15 by a circular ring with the position number 41.
- the structure described here is typical for DC machines. The electrical connections are not dealt with here.
- each spindle 32 has a spur gear 42, a toothed belt 43 being placed on the three spur gears 42.
- the drive has the same structure.
- the drive shaft 9 is driven either by means of a flat belt 15 or an electric motor 28, the rotation of the drive shaft 9 being transmitted to each of the three spindles 1.
- a friction wheel 14 is attached to each spindle 1, which rolls on the outer surface of the drive shaft 9 in frictional contact.
- the spindles 1 are additionally synchronized.
- the drive shaft according to FIGS. 1, 7 to 10 is particularly expedient in terms of its diameter ratio. In the area where the flat belt 15 engages, the drive shaft 9 is kept small in diameter. In contrast, the drive shaft 9 is very large in diameter in the area of the outer permanent magnets 20 or the friction disks 14, 24. This design of the drive shaft 9 has the result that very high peripheral speeds are achieved which are transmitted to each spindle 1.
- the rubber ring 23 only grips until the spindle 1 in question again runs synchronously with the drive shaft 9; the permanent magnets 20, 21 align themselves again in such a way that the magnetic coupling 19 engages again. From this point on, the rubber ring 23 only rotates without load.
- the variant according to FIG. 12 has the particular advantage that the power transmission between the drive shaft 9 and the spindles 1 is ensured via the intermeshing spur gears 29, 30. In this embodiment, further means for synchronizing the three spindles 1 are omitted.
- each spindle 32 is driven by its own electric motor 37.
- the electric motor 37 can be made relatively small because of the low power transmission, and at the same time very high speeds can be driven with appropriately designed electric motors 37.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19520120 | 1995-06-01 | ||
DE19520120A DE19520120A1 (de) | 1995-06-01 | 1995-06-01 | Antrieb für Friktionsspindelaggregate |
PCT/EP1996/001766 WO1996038605A1 (de) | 1995-06-01 | 1996-04-26 | Antrieb für friktionsspindelaggregate |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0828872A1 true EP0828872A1 (de) | 1998-03-18 |
EP0828872B1 EP0828872B1 (de) | 1999-07-07 |
Family
ID=7763422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96914139A Expired - Lifetime EP0828872B1 (de) | 1995-06-01 | 1996-04-26 | Antrieb für friktionsspindelaggregate |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0828872B1 (de) |
JP (1) | JPH11506526A (de) |
DE (2) | DE19520120A1 (de) |
WO (1) | WO1996038605A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009040864A1 (de) | 2009-09-09 | 2011-03-10 | Schaeffler Technologies Gmbh & Co. Kg | Friktions-Motorspindel |
DE102011080416A1 (de) | 2011-08-04 | 2013-02-07 | Schaeffler Technologies AG & Co. KG | Friktions-Motorspindel und Verfahren zum Betrieb |
DE102022004597A1 (de) * | 2022-12-08 | 2024-06-13 | Oerlikon Textile Gmbh & Co. Kg | Vorrichtung zum Falschdrallen eines synthetischen Fadens |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2970491A (en) * | 1959-07-02 | 1961-02-07 | Dana Corp | Bearing and speed reduction mechanism |
CH384315A (de) * | 1961-02-23 | 1964-11-15 | Heberlein & Co Ag | Reibradgetriebe |
GB1419085A (en) * | 1972-03-06 | 1975-12-24 | Scragg & Sons | Yarn processing |
GB1379960A (en) * | 1972-03-30 | 1975-01-08 | Scragg & Sons | False twisting apparatus |
DE2319153C3 (de) * | 1973-04-16 | 1980-11-13 | Fag Kugelfischer Georg Schaefer & Co, 8720 Schweinfurt | Vorrichtung zum Falschdrallen von Fäden |
DE7525192U (de) * | 1975-08-08 | 1976-05-20 | Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal | Friktionsfalschdraller |
JPS5221443A (en) * | 1975-08-06 | 1977-02-18 | Kanebo Ltd | Apparatus for producing processed yarn |
FR2332352A1 (fr) * | 1975-11-19 | 1977-06-17 | Roannais Const Textiles Atel | Perfectionnement aux broches de texturation fausse-torsion par disques |
DE3245574C2 (de) * | 1982-12-09 | 1985-10-03 | FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt | Verfahren zum Überwachen des Texturiervorgangs bei einem Friktionsfalschdrall-Aggregat |
DE8532434U1 (de) * | 1985-11-16 | 1986-01-02 | FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt | Reibrotor zum Falschdrallen von synthetischen Fäden |
DE3743708C2 (de) * | 1987-12-23 | 1995-08-31 | Temco Textilmaschkomponent | Falschdralltexturieraggregat mit elektromotorischem Antrieb |
DE4110464A1 (de) * | 1991-03-30 | 1992-10-01 | Kugelfischer G Schaefer & Co | Friktionsfalschdrallaggregat mit elektromotorischem antrieb |
-
1995
- 1995-06-01 DE DE19520120A patent/DE19520120A1/de not_active Withdrawn
-
1996
- 1996-04-26 EP EP96914139A patent/EP0828872B1/de not_active Expired - Lifetime
- 1996-04-26 WO PCT/EP1996/001766 patent/WO1996038605A1/de active IP Right Grant
- 1996-04-26 DE DE59602400T patent/DE59602400D1/de not_active Expired - Fee Related
- 1996-04-26 JP JP8536128A patent/JPH11506526A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9638605A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH11506526A (ja) | 1999-06-08 |
DE59602400D1 (de) | 1999-08-12 |
WO1996038605A1 (de) | 1996-12-05 |
DE19520120A1 (de) | 1996-12-05 |
EP0828872B1 (de) | 1999-07-07 |
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