WO2022002487A1 - Procédé pour faire fonctionner une peigneuse pour préparation de filage, et peigneuse - Google Patents

Procédé pour faire fonctionner une peigneuse pour préparation de filage, et peigneuse Download PDF

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Publication number
WO2022002487A1
WO2022002487A1 PCT/EP2021/063985 EP2021063985W WO2022002487A1 WO 2022002487 A1 WO2022002487 A1 WO 2022002487A1 EP 2021063985 W EP2021063985 W EP 2021063985W WO 2022002487 A1 WO2022002487 A1 WO 2022002487A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
tear
fiber strand
rollers
phase position
Prior art date
Application number
PCT/EP2021/063985
Other languages
German (de)
English (en)
Inventor
Dirk Meier
Original Assignee
TRüTZSCHLER GMBH & CO. KG
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 TRüTZSCHLER GMBH & CO. KG filed Critical TRüTZSCHLER GMBH & CO. KG
Priority to CN202180044720.6A priority Critical patent/CN115803485A/zh
Priority to EP21729833.0A priority patent/EP4176114A1/fr
Publication of WO2022002487A1 publication Critical patent/WO2022002487A1/fr

Links

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
    • D01G19/20—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously operating to draw-off fibres intermittently
    • 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
    • D01G19/26—Driving arrangements

Definitions

  • the invention relates to a method for operating a combing machine for spinning preparation, with a rotatingly driven circular comb roller, over which a fiber strand is routed in periodic sequence for combing it, and with upper tongs and lower tongs, by means of which the fiber strand to be combed is clamped in periodic sequence and is released again, and with a rotatably driven front tear roller and a rotatably driven rear tear roller, the tear rollers rotating back and forth in a mit step movement to form reversal points, and with at least one front tear roller of the fiber strand being separated in periodic succession.
  • a generic combing machine for spinning preparation is known, and the front tear roller and the rear tear roller are driven via a common control gear, with a first motor for a continuous rotary movement and a second motor for a drive superimposed discontinuous rotary motion is used to generate the pilgrim's step motion.
  • the tear-off rollers are driven via a planetary gear and rigidly coupled to one another in their phase positions of the rotation on the output side of the planetary gear, so that both tear-off rollers perform equally strong acceleration and deceleration of the rotary movement.
  • the pilgrim step movement results in great rotational accelerations that cannot be converted into one another due to the synchronous rotary movement of the rollers, so that a considerable amount of energy is required to operate the tear rollers in the combing head of a comber synchronously with the pilger step movement.
  • a method for operating a combing machine for spinning preparation is known from EP 2 444 534 B1, and it is proposed to set up a movement curve of the tear rollers over time in the simplest possible manner by specifying discrete setting points by using a control with a computer and is used with an input unit. After entering discrete reversal points and those in between The grand step movement can be carried out according to auxiliary points by controlling the servomotors according to the requirements of the curve shape.
  • the object of the invention is to further improve the operation of a comber by reducing the energy requirement of the comber.
  • the application of the length of the combed fiber strand per time should remain as constant as possible.
  • the invention includes the technical teaching that the rear tear roller is driven to rotate with a phase position which follows the phase position of the front tear roller driven in rotation between the reversal points of the vocational step movement.
  • the tearing process for separating the fiber strand takes place exclusively or predominantly through the front tear-off roller, the presence of the rear tear-off roller being necessary to guide the fiber strand and also to exert an at least partial force on the fiber strand, especially when it is put back together again, which means that so-called soldering is called.
  • the further, rear tear-off roller is basically necessary in order to fix the fiber strand that has been soldered together again in the soldering points, in that the fiber strand also passes through the rear tear-off roller several times due to the pilgrim step movement.
  • the rear tear-off roller is operated somewhat more slowly between the reversal points, in that the change in speed over time is at least phase-wise lower, it has been shown that this can save energy.
  • the reason is the less “sharp” reversal movement of the roller and the “softer” speed change before and after the reversal points.
  • the phase positions of the tear-off rollers then coincide again at the reversal points, but the front tear-off roller undergoes a greater speed change per unit of time than the rear tear-off roller, with reference to the course of the curve in particular before and after the reversal points.
  • the rear tear roller is operated with a maximum rotational acceleration between the reversal points which is less than the maximum rotational acceleration of the front tear roller.
  • a curve of the phase position of the rear tear roller of a phase angle over time has a lower slope than the curve of the phase position of the front tear roller.
  • the maximum slope of the curve of the phase position of the front tear roller is greater than the maximum slope of the curve of the phase position of the rear tear roller.
  • the change in the speed per unit of time for the rear tear-off roller can be smaller than the change in the rotational speed per unit of time of the front tear-off roller.
  • the front and rear tear rollers are driven separately from one another with a respective motor drive.
  • This has the advantage of being able to provide a control unit with which the motorized drives of the front and rear tear roller can be controlled separately from one another.
  • it is advantageous not to couple the motorized drive of the front tear-off roller and the motorized drive of the rear tear-off roller with one another with a transmission.
  • the motor drive of each of the tear rollers is decoupled from the drive of the other rotating components of the comber.
  • the tear-off rollers can comprise rotary encoders with which the rotational position of the rollers can be transmitted to the control unit at any time in order to control the rollers accordingly with a phase-locked loop.
  • the tear-off rollers can in particular be formed by a rotor of an electric motor itself or have a torsionally rigid connection with a rotor of an electric motor, so that a very dynamic curve of the phase position for the tear-off rollers can be passed through solely by electrical control, in particular within an electrical control circuit.
  • the phase position of the rear tear roller deviates from the phase position of the front tear roller in such a way that the section of the fiber strand between the tear rollers forms a loop that recurs in a periodic sequence.
  • the loop can also form an otherwise straight extension of the fiber strand, as it were as an abstract shape of the loop, in which the fiber strand is present without tension in the section between the tear-off rollers or where the tension in the fiber strand between the tear-off rollers pulsates as a tensile swelling force, so essentially with a tensile force> 0 remains.
  • a loop of the fiber strand is preferably formed at least to a small extent between the tear rollers, which is already present when the fiber strand no longer forms a straight line between the tear rollers.
  • the motor drive of the rear tear roller is operated with a lower average power and / or with a lower maximum power over the vocational step cycle than the motor drive of the front tear roller. This results in a lower overall energy requirement, with the front tear roller having to maintain a technologically necessary phase position in order to match the combing process with the tearing process, the combing out and the soldering process in accordance with the phase positions of the other rotating components of the combing head of the combing machine for each comb game keep.
  • the invention is also directed to a combing machine for spinning preparation with a control unit with which the combing machine can be operated according to the method described above.
  • the combing machine has a first motor drive and a second motor drive, and the first motor drive drives the front tear roller and the second motor drive drives the rear tear roller, the motor drives being separated from one another by a control unit of the
  • Combing machine are designed to be controllable.
  • FIG. 1 shows a schematic view of a combing machine according to the prior art
  • FIG. 2 shows the view of the comber according to FIG. 1 with features according to the invention
  • FIG. 3 shows a diagram in which the curve of the phase position of the front tear-off roller and the phase position of the rear tear-off roller are plotted over time.
  • Figures 1 and 2 each show a combing machine 100 in the area of a combing head, and the common features of the combing head according to Figure 1, which represents the prior art and the combing head according to Figure 2, which represents the features of the invention, are described together below.
  • the combing machine 100 is shown with the combing head which is used to comb out a fiber strand 10, which can also be referred to as a fiber fleece or wadding.
  • the fiber strand 10 is stored on a fiber lap 17 or in a can (not shown) in a non-combed state, and the fiber lap 17 is taken up on two winding rollers 18 and 19.
  • the fiber lap 17 can thus be unwound by rotating the winding rollers 18, 19 and fed to the combing head.
  • the fiber strand 10 runs over a feed cylinder 11 and is then fed to a tong apparatus which comprises an upper tong 2 and a lower tong 3.
  • the upper gripper 2 and the lower gripper 3 release the fiber strand 10 in the open state of the grippers 2 and 3, and this can run out over the front output side of the gripper apparatus.
  • the fiber strand 10 runs over directly into a front tear roller 4, which is finally guided between the front tear roller 4 and a front tear counter-roller 15 by the fiber strand 10 being wedged between the tear roller 4 and the tear counter-roller 15, as it were.
  • a nipper arm 12 to which the lower nipper 3 is hinged is used, and the nipper arm 12 is mounted on a nipper shaft 13 which performs a periodic back and forth movement.
  • the upper nipper 2 is also movably driven in a manner not shown, and releases the fiber strand 10 in the shown phase position of the combing head. If the combing head moves back, in that the front mouth of the pair of tongs 2, 3 moves away from the front tear roller 4 to the left in the plane of the figure, the fiber strand is separated by a tear shortly before the front tear roller 4, and another section of the fiber strand 10 is over the feed cylinder 11 released.
  • the tuft released in this way reaches its free length over the circular comb roller 1, which is driven in rotation and a circular comb segment 14 on the circular comb roller 1 can comb out the fiber tuft.
  • the combing head then moves back to the left in the direction of the tear-off rollers 4, 5, which in this phase position move the already combed fiber strand 10 back a little in the direction of the tongs 2, 3, so that the freshly combed fiber strand with the retracted fiber strand from the front Tear-off roller 4 can be soldered.
  • the tuft combed out by the circular comb segment 14 lies on the end section of the returned fiber strand 10 with an overlap and is drawn into the clamping point of the first, front tear-off roller 4 in conjunction with the front tear-off counter-roller 15 for soldering with this. Subsequently, the tear-off rollers 4, 5 are rotated forward at a larger angle, so that a larger section of the fiber strand 10 is guided in the direction of the pair of take-off rollers 20.
  • the tear-off rollers 4, 5 must first be rotated backwards through a predetermined phase angle in each nip and then rotated forward again through a further, larger predetermined phase angle, so that with the forward rotation the fiber strand 10 is transferred to the pair of take-off rollers 20. This movement is called the pilgrim step movement.
  • a drive unit 9 which drives the tear rollers 4, 5 together in phase.
  • the operation of the rollers can be done with a first motor drive, which is a continuous rotation in a
  • Roll gear initiates, and a second motor drive superimposed on a discontinuous one
  • each tear roller 4, 5 has a separately assigned motor drive 6, 7, and the motor drive 6 exclusively drives the front tear roller 4 and the second motor drive 7 exclusively drives the rear tear roller 5 .
  • the tear-off counter-rollers 15 and 16 rotate with the contact with the driven tear-off rollers 4, 5.
  • a control unit 8 is used to control the motor drives 6, 7, which can have an input / output interface in a manner not shown, so that an operator can program the mit step movement accordingly via the control unit 8.
  • the rear tear-off roller 5 is driven to rotate with a phase position which follows the phase position of the front tear-off roller 4 driven in rotation.
  • a loop S can form between tear-off rollers 4, 5, which is either pulled out of the fiber strand 10 with each nipple play in that it again runs straight between the tear-off rollers 4, 5, in particular with the application of a low tension, and with a subsequent nipple play The loop S is formed again.
  • the loop S is always formed between the reversal points of the phase progressions of the rotational movement of the tear-off rollers 4, 5, with the front tear-off roller 4 being operated with a greater angular acceleration than the rear tear-off roller 5 between the reversal points a larger section of the fiber strand 10, the front tear-off roller 5 than the section of the fiber strand 10 passed through the rear tear-off roller 5 are through ei ne rigid or optionally manually or automatically variable transmission connection generated with each other.
  • phase 3 shows a diagram on which the angle of rotation of the tear-off rollers 4 and 5 is plotted against the operating time t, given in milliseconds.
  • the phase positions P1 and P2 show a typical course of a vocational step movement, in particular reversal points U1 and U2 are formed, only one combing cycle being shown.
  • the succession of combing cycles cause the rotation angles a1, a2 to continue rotating continuously, so that the course of the curve will, in a certain way, cascade further and further upwards.
  • the diagram shows the deviations of the phase positions P1 and P2 of the rotational movement of the tear-off rollers 4 and 5 over time t, the phase position P1 describing the temporal phase profile of the front tear-off roller 4 and the phase position P2 describing the temporal phase profile of the rear tear-off roller 5.
  • the phase positions P1 and P2 of the front and rear tear-off rollers 4, 5 differ from one another.
  • the deviation is designed in such a way that the maximum change in speed of the rear tear-off roller 5 per unit of time is less than the maximum change in rotational speed per unit of time of the front tear-off roller 4.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

La présente invention concerne un procédé pour le fonctionnement d'une peigneuse (100) pour une préparation de filage, lequel procédé comprend : - un rouleau de peigne circulaire entraîné en rotation (1), sur lequel un brin de fibres (10) est guidé selon une séquence périodique de telle sorte que le brin de fibres est peigné ; - une pince supérieure (2) et une pince inférieure (3), à l'aide desquelles pinces le brin de fibres (10) à peigner est serré et libéré selon une séquence périodique ; et - un rouleau de détachement avant entraîné en rotation (4) et un rouleau de détachement arrière entraîné en rotation (5), les rouleaux de détachement (4, 5) tournant dans un sens et dans un autre en un mouvement de pas de pèlerin de telle sorte que des points d'inversion (U1, U2) sont formés, et le brin de fibres (10) étant séparé selon une séquence périodique au moins à l'aide du rouleau de détachement avant (4). Selon l'invention, le rouleau de détachement arrière (5) est entraîné en rotation avec une position de phase (P2) qui est en retard derrière la position de phase (P1) du rouleau de détachement avant entraîné en rotation (4) entre les points d'inversion (U1, U2).
PCT/EP2021/063985 2020-07-01 2021-05-26 Procédé pour faire fonctionner une peigneuse pour préparation de filage, et peigneuse WO2022002487A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180044720.6A CN115803485A (zh) 2020-07-01 2021-05-26 运行用于纺织准备的精梳机的方法和精梳机
EP21729833.0A EP4176114A1 (fr) 2020-07-01 2021-05-26 Procédé pour faire fonctionner une peigneuse pour préparation de filage, et peigneuse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020117397.0A DE102020117397A1 (de) 2020-07-01 2020-07-01 Verfahren zum Betrieb einer Kämmmaschine für die Spinnereivorbereitung und Kämmmaschine
DE102020117397.0 2020-07-01

Publications (1)

Publication Number Publication Date
WO2022002487A1 true WO2022002487A1 (fr) 2022-01-06

Family

ID=76269715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/063985 WO2022002487A1 (fr) 2020-07-01 2021-05-26 Procédé pour faire fonctionner une peigneuse pour préparation de filage, et peigneuse

Country Status (4)

Country Link
EP (1) EP4176114A1 (fr)
CN (1) CN115803485A (fr)
DE (1) DE102020117397A1 (fr)
WO (1) WO2022002487A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023117225A1 (fr) * 2021-12-22 2023-06-29 Trützschler Group SE Procédé pour faire fonctionner une peigneuse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713225A1 (de) * 1996-03-29 1997-10-30 Rieter Ag Maschf Abreiss- und Lötvorrichtung an einer Kämmaschine
EP2444534B1 (fr) 2010-10-22 2012-12-26 Kabushiki Kaisha Toyota Jidoshokki Dispositif de réglage du mouvement pour détacher un rouleau d'une peigneuse
DE102012011030A1 (de) 2012-06-05 2013-12-05 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Kämmmaschine mit einer Antriebsvorrichtung zur Erzeugung einer Pilgerschrittbewegung für die Abreißwalzen
WO2017006196A1 (fr) * 2015-07-03 2017-01-12 Maschinenfabrik Rieter Ag Entraînement individuel pour le rouleau d'arrachage d'une peigneuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713225A1 (de) * 1996-03-29 1997-10-30 Rieter Ag Maschf Abreiss- und Lötvorrichtung an einer Kämmaschine
EP2444534B1 (fr) 2010-10-22 2012-12-26 Kabushiki Kaisha Toyota Jidoshokki Dispositif de réglage du mouvement pour détacher un rouleau d'une peigneuse
DE102012011030A1 (de) 2012-06-05 2013-12-05 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Kämmmaschine mit einer Antriebsvorrichtung zur Erzeugung einer Pilgerschrittbewegung für die Abreißwalzen
WO2017006196A1 (fr) * 2015-07-03 2017-01-12 Maschinenfabrik Rieter Ag Entraînement individuel pour le rouleau d'arrachage d'une peigneuse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023117225A1 (fr) * 2021-12-22 2023-06-29 Trützschler Group SE Procédé pour faire fonctionner une peigneuse

Also Published As

Publication number Publication date
DE102020117397A1 (de) 2022-01-05
CN115803485A (zh) 2023-03-14
EP4176114A1 (fr) 2023-05-10

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