EP1936013B1 - Abreisswalze für eine Kämmmaschine - Google Patents

Abreisswalze für eine Kämmmaschine Download PDF

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Publication number
EP1936013B1
EP1936013B1 EP07022548A EP07022548A EP1936013B1 EP 1936013 B1 EP1936013 B1 EP 1936013B1 EP 07022548 A EP07022548 A EP 07022548A EP 07022548 A EP07022548 A EP 07022548A EP 1936013 B1 EP1936013 B1 EP 1936013B1
Authority
EP
European Patent Office
Prior art keywords
roller
detaching roller
pressure
detaching
tear
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.)
Not-in-force
Application number
EP07022548A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1936013A1 (de
Inventor
Jacques Peulen
Michael Will
Robert Epp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1936013A1 publication Critical patent/EP1936013A1/de
Application granted granted Critical
Publication of EP1936013B1 publication Critical patent/EP1936013B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/14—Drawing-off and delivery apparatus
    • D01G19/18—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously

Definitions

  • the invention relates to a tear-off roller of a combing machine on which a pressure roller rests, which is acted upon at its two ends by pressure medium transversely to the axis of rotation of the tear-off roller.
  • the end of a cotton combed out beforehand by a combing segment of a round comb is fed via the nipper unit to a subsequent detaching roller pair.
  • the Abreisswalzencru is driven by a Pilger Görison over which the previously formed nonwoven fabric (short: fleece) by a certain amount in the direction of the nipper unit (short: pliers) is returned.
  • the end (tuft) of the wadding delivered by the tongs and combed out is laid on the end of the fleece conveyed back by a partial amount.
  • the invention thus has the object to avoid the disadvantages of known designs and to propose the production of cost-effective Abreisswalzen for a comber, by means of which, in conjunction with each of a pressure roller, an approximately uniform pressure distribution over the length of the Abreisswalzen can be achieved.
  • the tear-off roller (one of several) is designed with a cylindrical center region and the ends adjoining on both sides are each provided with at least two successive conical sections, wherein - viewed in the direction of the respective end of the tear-off roller each subsequent conical section has a greater taper than the preceding conical section.
  • the pressure rollers used in this case may have a cylindrical shape, whereby a regrinding in the spinning can be easily performed.
  • the pressure peaks existing in the area of the introduction of pressure in previous solutions can be reduced, as will be explained in more detail in subsequent embodiments.
  • the edge regions of the fleece can be better controlled, since they are exposed to lower pressure loads.
  • the adjoining the cylindrical portion ends of the tear-off roller can each have two to six consecutive conical sections.
  • the length of the cylindrical section is greater than the length of the respectively adjacent first conical section and the lengths of the subsequent further conical sections are each smaller than the length of the respective first conical sections.
  • the attachment of two, on both sides of the central portion conical sections is proposed, with the respective first conical portion adjoining the cylindrical portion, with a taper at an angle ( ⁇ ) in the range between 0 ° 2 'and 0 ° 10th 'is provided and the subsequent second conical section has a taper under a coil ( ⁇ ) in the range between 0 ° 12' and 0 ° 25 '.
  • the take-off roll be provided with a flute.
  • the flute can extend over the cylindrical and conical sections of the tear-off roller.
  • the flute has a constant depth of flute over all sections of the tear-off roller.
  • the Kannelur can z. B. at an angle ( ⁇ ) to the axis of rotation of the tear-off, Furthermore, it is proposed that the resting on the tear roller pressure roller is cylindrical and is provided with a sheath which has a lower degree of hardness than the degree of hardness of the surface of the tear-off roller. This ensures that a sufficient frictional force is present to rotate the pressure rollers via friction, even at higher speeds via the driven tear-off rollers under the action of the clamped fleece. In addition, provided with a softer surface pressure roller material fluctuations - seen over the roll length - in the fleece adapt or compensate.
  • the pressure roller resting on the tear-off roller-seen over its length- has a shape deviating from the cylindrical shape. It is conceivable that the pressure roller is also provided in the region of its ends with conical sections. However, deviation of the pressure rollers from the cylindrical shape should, if possible, be avoided in order to allow easy regrinding in the spinning mill (as already described).
  • a tear-off roller according to the invention, wherein no cylindrical central region is provided and, starting from the center of the tear-off roller, a plurality of conical sections are arranged at both ends whose peripheral surfaces taper towards the respective end of the tear-off roller. In this case, their peripheral surfaces run within a bending line, which is calculated from the formula described above.
  • the contour of the tear-off roller can be optimally adapted to the bending forces that occur, as well as a uniform pressure distribution is achieved.
  • this version can also be provided with a continuous Kannelur.
  • pressure rollers conceivable that ensure an approximately uniform pressure distribution over the length of the pressure roller in connection with the tear-off roller according to the invention and in particular pressure peaks in the edge region of the fleece are avoided even when heated during operation.
  • Fig. 1 shows an embodiment of the prior art.
  • the supplied from a nipper unit 1 (short: pliers) cotton web 2 is fed via a feed cylinder 3 a Abreisswalzencru 5.
  • the Abreisswalzencru 5 consists of a tear-off roller 5a and a pressure roller 5d. From the open forceps 1, which is located in a forward position, outstanding tuft 7 (end of the cotton web) is placed on the rear end 8 of a Kammzugvlieses or nonwoven fabric 10 and with this due to the forward movement of the Abreisswalzencrues 5 in the nip of Abreisswalzencrues 5 transferred.
  • the fibers which are not held back by the retaining force of the cotton web 2, or by the pliers (nip of the feed cylinder), torn from the composite of the wadding.
  • This tearing off the tuft 7 is additionally pulled through the needles of a Fixkammes 9.
  • the Fixkamm 9 causes the combing out of the rear part of the withdrawn tuft as well as the retention of nits, impurities and the like. Due to the speed differences between the wadding web 2 and the withdrawal speed of the Abreisswalzencrues 5, the withdrawn fiber package is warped to a certain length.
  • Abreisswalzencru 5 Following the Abreisswalzencru 5 another Abreisswalzencru 6 is arranged, which also consists of a tear-off roller 6a and a pressure roller 6d. However, the actual tear-off is performed by the first Abreisswalzencru 5.
  • the pliers In the tearing described, there is an overlap or doubling of the front end of the torn off or withdrawn fiber packet with the rear end 8 of the fiber web 10.
  • the pliers return to a rear position back, in which it is closed and the pliers protruding tuft 7 presents a comb segment 12 of a circular comb 13 for combing out.
  • the Abreisswalzencrue 5 and 6 perform a reversing, whereby the rear end 8 of the fiber web 10 to a certain Amount is returned. This is necessary to achieve a necessary for a subsequent soldering coverage.
  • Fig. 2 shows a known embodiment of a Abreisswalzencrues 5 with a tear-off roller 5a and a pressure roller 5d.
  • the tear-off roller 5a is mounted rotatably in the machine frame MS of the combing machine via a shaft journal 11 in bearings LA shown schematically.
  • the drive of the tear-off roller 5a as well as the drive of the tear-off roller 6a not shown here take place via a gear G, which is connected to a drive AT (eg a motor).
  • a drive AT eg a motor
  • a pressure roller 5d is arranged, which is mounted via a shaft journal 17 in not shown receptacles and rests in the operating position on the tear-off roller 5 under a compressive load.
  • This pressure load is generated by two pneumatic pressure cylinder Z, which are also stored in the receptacle, not shown.
  • An embodiment of a storage of the pressure rollers 5a, 6a, or the pressure cylinder Z in a recording is z. B. from the DE-A1-4229448 refer to.
  • the non-woven fabric 10 is clamped.
  • the pneumatic pressure cylinders Z are connected in operation via the line 14, or 15 via a valve V to a pressure source Q and pressurized with compressed air.
  • the control of, or the valves V is carried out by a control unit ST, via which also the drive AT is controlled. By introducing the pressure force in the area of the outer ends of the impression cylinder.
  • the effect occurs that the edge region R of the fibrous web 10 is undesirably deformed by the high loads (P1) prevailing there.
  • P1 high loads
  • the edge region of the nonwoven fabric is uneven and dirty. This results in a visually uneven fiber web and can also lead to loss of quality (unevenness) in the fiber sliver formed below.
  • FIG. B an embodiment proposed which in Figure 3 is shown in more detail. Except for the modified design of the tear-off roller 5a, the remaining elements correspond to the elements which already in the embodiment of Fig.2 were shown. Therefore, these parts are no longer in the embodiment of Figure 3 described.
  • the tear-off roller 5a, as well as the tear-off roller 6a, not shown, are provided, following a cylindrical middle section M, at both ends with two conical sections K1 and K2. To compensate for the occurring bending force on the impression cylinder, the lengths of the central portion M, the first and second cone K1, K2 have different lengths.
  • the cylindrical middle section M has the greatest length with L1.
  • the length L2 of the adjoining cone K1 is smaller than the length L1 of the central portion M and greater than the length L3 of the adjoining cone K2.
  • the first cone K1 has a smaller taper angle ⁇ than the taper angle ⁇ of the second and outer cone K2.
  • the taper angle ⁇ can be between a range of 0 ° 2 'and 0 ° 10', while the taper angle ⁇ can be performed in a range between 0 ° 12 'and 0 ° 25'.
  • the occurring bending of the pressure roller 5d (6d) can be substantially compensated, as shown in the diagram above the pressure roller in Figure 3 can be seen. It is the Force P2 in the edge region R of the fibrous web 10 only slightly larger than the compressive force Pm in the central region, whereby the previously in the example of Fig.2 described disadvantages are compensated. That is, the resulting deflection of the pressure roller 5d, especially after heating during operation, are compensated by the shape of the tear-off roller 5a. With appropriate design of the cone K1 and K2 can even be achieved that the force P2 in the edge region even smaller than the pressing force Pm.
  • the tear-off roller 5a (6a) provided with a Kannelur K, which can extend obliquely at an angle x to the axis of rotation D of the tear-off roller. From the partial view of the sectional view in 4a it can be seen that the Kannelur has a Kannelurianae KT.
  • the flute depth KT In order to keep the tear-off effect constant over the entire length L of the tear-off roller 5a (6a), it is possible for the flute depth KT to be kept at a constant level even in the area of the cone K1 and K2. Although this is somewhat more expensive in terms of production technology, it results in the previously described constant tear-off effect over the entire length of the pair of detaching rollers.
  • Fig. 5 shows another embodiment similar to Fig. 3 However, with the difference that instead of two outer cone on a central part M of the tear-off roller on each side of a central part M three cone K1, K2 and K3 are provided.
  • the respective lengths L1 to L4 decrease outwardly to the respective end of the tear-off roller 5a (6a).
  • the taper angle ⁇ , ⁇ and ⁇ starting from the cone K1 to the cone K3 is formed increasing.
  • the taper angle ⁇ for the cone K3 is in the Figure 5 for reasons of clarity not shown, but is in accordance with the in Figure 4 shown angles ⁇ , ⁇ to see.
  • the adaptation of the shape of the tear-off roller can be adapted even more precisely to the bending line of the respective pressure roller.
  • the pressure force P3 in the edge region R corresponds approximately to the pressure force Pm in the middle region M or may even be lower.
  • embodiments may come into play, which have up to six cones on each side of the central cylindrical section M. Here, however, one must decide between the actual benefit and the manufacturing effort.
  • Fig. 6 shows a further embodiment, wherein the tear-off roller 5a according to the embodiment of Figure 3 is executed.
  • the pressure roller 5e is designed differently than the pressure roller 5d.
  • the pressure roller 5e here consists of a sleeve 20 (which is provided, for example, with a rubber coating), which is mounted on a core 21 in its central region.
  • the core 21 is mounted on a shaft 22, via which the pressure roller 5e is mounted in recordings not shown.
  • the initiation of the compressive force P in the center region of the tear-off roller whereby the bending of the pressure roller 5e is lowered in the edge region R and in combination with the outer cone K1, K2 of the tear roller an approximately uniform compressive force (clamping force) over the length L of the tear-off roller can be achieved.
  • the tear-off roller 5a is also provided with two cone K1, K2 on both sides of the middle part M.
  • the pressure roller 5h which cooperates with this tear-off roller 5a, has in each case two cones K5, which taper towards the end of the pressure roller, following a cylindrical middle part 25.
  • a shaft journal 26 is mounted in the end regions of the pressure roller 5h, via which the pressure roller 5h is mounted in receptacles, not shown.
  • the provided cone K5 of the pressure roller 5d can additionally reduce the cause increased pressure load P5 in the edge region of the nonwoven fabric 10, so that the pressure distribution over the entire width of the nonwoven fabric is approximately equal.
  • This version is not cylindrical
  • the tear-off roller 5a tapers in front of its center M1 on both sides evenly towards its ends.
  • this tear-off roller can also be provided with a flute K, as in the exemplary embodiment of FIG Figure 4 was shown and described. The explanation of the formula values has already been made in the input description.
  • this embodiment may also be provided with a cylindrical central portion (not shown).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP07022548A 2006-12-21 2007-11-21 Abreisswalze für eine Kämmmaschine Not-in-force EP1936013B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH20772006 2006-12-21

Publications (2)

Publication Number Publication Date
EP1936013A1 EP1936013A1 (de) 2008-06-25
EP1936013B1 true EP1936013B1 (de) 2009-09-30

Family

ID=39121273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07022548A Not-in-force EP1936013B1 (de) 2006-12-21 2007-11-21 Abreisswalze für eine Kämmmaschine

Country Status (3)

Country Link
EP (1) EP1936013B1 (zh)
CN (1) CN101205643B (zh)
DE (1) DE502007001621D1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022100250A1 (de) 2022-01-19 2023-07-20 Trützschler Group SE Kämmmaschine mit einer Einrichtung zur Erkennung der Qualität des Faserbandes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1393626B1 (it) * 2009-04-28 2012-05-08 Marzoli Combing & Flyer S P A Cilindro strappatore per pettinatrice
DE102018122276B4 (de) * 2018-09-12 2021-02-11 TRüTZSCHLER GMBH & CO. KG Kämmmaschine
CH716167A1 (de) * 2019-05-09 2020-11-13 Rieter Ag Maschf Abreisszylinderaggregat mit einer Vorrichtung für Druckzylinder von Abreisszylinderpaaren einer Kämmmaschine.
CN115213742A (zh) * 2021-04-18 2022-10-21 无锡市新裕滚针轴承有限公司 一种大凸度长滚针多级抛串加工方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE405360C (de) 1924-11-01 James Lever Rushton Abnehmerwalze fuer Kaemmaschinen
US709694A (en) * 1901-07-23 1902-09-23 Alfred Bietenholz Draw-off or stretching rollers for textile machinery.
US2025746A (en) * 1932-04-15 1935-12-31 Irving Trust Co Printing machine roller and cylinder
GB440485A (en) 1934-06-01 1936-01-01 Percy Joseph Gillespie Improvements relating to means for drawing-off slivers in combing machines used in the preparation of textile fibres for spinning
US3310847A (en) * 1964-06-09 1967-03-28 Maremont Corp Helical draft rolls
JPS63153332U (zh) * 1987-03-25 1988-10-07
EP0336217A3 (de) 1988-04-08 1990-04-11 Maschinenfabrik Rieter Ag Druckwalze zum Anpressen an einen rotierenden Zylinder einer Textilmaschine
CH683533A5 (de) 1991-09-05 1994-03-31 Rieter Ag Maschf Abreisszylinderaggregat für eine Kämmaschine.
CN1090255C (zh) * 1996-03-29 2002-09-04 里特机械公司 精梳机的分离－和接合装置
CN1768173A (zh) * 2003-04-02 2006-05-03 里特机械公司 精梳机的夹持装置
WO2006012758A1 (de) 2004-08-05 2006-02-09 Maschinenfabrik Rieter Ag Kämmmaschine.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022100250A1 (de) 2022-01-19 2023-07-20 Trützschler Group SE Kämmmaschine mit einer Einrichtung zur Erkennung der Qualität des Faserbandes

Also Published As

Publication number Publication date
DE502007001621D1 (de) 2009-11-12
CN101205643A (zh) 2008-06-25
EP1936013A1 (de) 2008-06-25
CN101205643B (zh) 2011-10-05

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