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EP4470952A1 - Poste de travail d'une machine textile et procédé de surveillance du fil de déplacement d'un fil se déplaçant sur un poste de travail d'une machine textile - Google Patents

Poste de travail d'une machine textile et procédé de surveillance du fil de déplacement d'un fil se déplaçant sur un poste de travail d'une machine textile Download PDF

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Publication number
EP4470952A1
EP4470952A1 EP24176195.6A EP24176195A EP4470952A1 EP 4470952 A1 EP4470952 A1 EP 4470952A1 EP 24176195 A EP24176195 A EP 24176195A EP 4470952 A1 EP4470952 A1 EP 4470952A1
Authority
EP
European Patent Office
Prior art keywords
thread
guide arm
work station
coupling element
thread guide
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.)
Pending
Application number
EP24176195.6A
Other languages
German (de)
English (en)
Inventor
Jonathan Sprecher
Alexander Junker
Dietmar Froesch
Erik Bell
Heinz-Josef Peuker
Jan Dahlmanns
Martin Reszat
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.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Spinning Solutions GmbH and 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 Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Spinning Solutions GmbH and Co KG
Publication of EP4470952A1 publication Critical patent/EP4470952A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/005—Means compensating the yarn tension in relation with its moving due to traversing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/205—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage by means of a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/06—Annular guiding surfaces; Eyes, e.g. pigtails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/14—Pulleys, rollers, or rotary bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
    • B65H59/385—Regulating winding speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/006—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package quality control of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/174—Textile; fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • a controlled thread storage unit upstream of the traversing devices along a thread path for winding bobbins, e.g. conical cross-wound bobbins.
  • These thread storage units serve to adapt the thread slack that occurs when winding the bobbins to the constant thread delivery speed, e.g. of a spinning device or spinning cop take-off device.
  • the winding bobbin is usually held during the winding process or the bobbin travel in a pivoting bobbin frame of a thread winding device downstream of the traversing device and is usually driven by a friction roller via a friction connection or individually.
  • the winding speed of the winding bobbin corresponds to the constant thread delivery speed by, for example, the spinning device, depending on its wound diameter.
  • the thread is defined across the spool width, especially crosswise, by means of the traversing device. Due to the constant yarn delivery speed, the yarn loosens periodically, which is why it is necessary to compensate for the slack in the course of shortening the working path of the yarn along the yarn path in order to maintain a desired yarn tension.
  • known work stations also have a pneumatic thread storage, which serves to accommodate a thread loop in a thread storage tube, with suction air being made available at the work station as required to fill the thread storage tube. Applying a suction air flow to the thread storage tube in such a way that a negative pressure is created at the thread inlet opening of the thread storage tube causes the thread running in front of the thread inlet opening to be sucked into the thread storage tube.
  • the pneumatic thread storage is preferably used at the start of the work process at the work station, e.g. when piecing, with an excess thread length that cannot be wound up due to the speed of the winding package being too low being initially temporarily stored in the thread storage tube for the period from starting the thread winding device until the operating speed is reached in normal operation.
  • the filling level of the thread storage tube is calculated using the difference between, for example, the take-off speed of a spinning station and the speed of the winding package. Due to various influencing factors, such as slippage when accelerating the winding package and other factors, the calculated determination of the stored thread length only provides an approximate value, which is why the pneumatic thread storage must be emptied carefully in order to avoid windings on the winding package with an undesirable thread tension. In addition, the ambiguous detection of a full or empty thread storage results in the need to apply suction air to the pneumatic thread storage for a longer period of time than would theoretically be necessary, which leads to increased energy consumption.
  • thread monitors Another essential feature of the workstation is the detection of a thread break.
  • Separate units at the workstation, so-called thread monitors are usually used for this purpose. These detect a thread break and, if necessary, initiate the necessary process steps at the workstation to continue operating the workstation.
  • the use of separate thread monitors requires increased installation and maintenance effort, for example due to the necessary connection to the workstation's control system and the necessary adjustment and monitoring of this for the desired functional reliability.
  • the invention is based on the object of providing a method for monitoring the thread path of a running thread at a work station of a textile machine and a work station of a textile machine, which can be manufactured and operated particularly cost-effectively.
  • the invention solves the problem by a workstation having the features of claim 1 and by a method for monitoring the thread path according to the features of claim 11.
  • Advantageous developments of the invention are specified in the dependent claims.
  • Characteristic of the workstation according to the invention is that the thread storage unit is arranged at the workstation in such a way that the control system based on the transmitted Sensor information identifies a thread break and/or an empty pneumatic thread storage.
  • the thread storage unit is arranged at the work station in such a way that a control system assigned to the sensor unit allows the detection of a thread break and/or the recording of the filling level of the pneumatic thread storage by means of the sensor information recorded by the sensor unit, i.e. the thread force acting on the thread guide arm, a rotary movement and/or the position of the thread guide arm.
  • a control system assigned to the sensor unit allows the detection of a thread break and/or the recording of the filling level of the pneumatic thread storage by means of the sensor information recorded by the sensor unit, i.e. the thread force acting on the thread guide arm, a rotary movement and/or the position of the thread guide arm.
  • a significant drop in the thread force acting on the thread guide arm or a thread force not acting on the thread guide arm allows the conclusion that a thread break has occurred, so that the subsequent process steps at the work station for restarting the machine can then be initiated, for example, via the control system.
  • the arrangement of the thread storage unit according to the invention therefore also makes
  • the inventive arrangement of the thread storage unit at the work station and thus of the thread guide arm in the area of the thread path also makes it possible to make reliable determinations about the filling level of the pneumatic thread storage via the thread force acting or a thread tension and/or position of the thread guide arm that can be determined from this. If the pneumatic thread storage is reliably determined to be empty, the suction air operating the pneumatic thread storage can be immediately turned off and the work station can thus be operated in an energy-efficient manner.
  • a thread break and/or an empty pneumatic thread storage device can also be reliably detected via the sensor information on the position of the thread guide arm.
  • a combined evaluation of both the position of the thread guide arm and the thread force acting on the thread guide arm additionally increases the reliable detection of an empty pneumatic thread storage device and/or a thread break, which enables particularly reliable operation of the work station.
  • the control system which can be connected to the sensor unit, uses the sensor information recorded by the sensor unit to determine the thread force and/or the resulting thread tension and/or position of the thread guide arm. Taking into account known characteristic values previously stored in the control system or in a readable storage unit linked to the control system, conclusions can be drawn about the operating states and, as a result, a thread break and/or an empty pneumatic thread storage device can be reliably detected.
  • control system is designed to deactivate a suction air flow operating the pneumatic thread storage device and/or to interrupt a work process taking place at the work station.
  • the control system can preferably comprise a control unit and an evaluation and assessment unit. These units can be one and the same unit or different units. Two units can also be implemented with a single unit.
  • the control system can also be a component of the thread storage unit or a separate component. The arrangement of the control system can also be freely selected.
  • the control system can be provided in a work station that includes the thread storage unit, in a central machine control and/or away from the textile machine. Redundant control by providing two such control systems that check or can check each other can also be possible.
  • the control system is preferably designed to directly control a drive unit that regulates the suction air flow and to interrupt this suction air flow in the event of an empty pneumatic thread storage unit.
  • control system can also be provided to additionally or alternatively immediately interrupt the work process of the work station, so that in the event of an empty thread storage unit or a thread breakage being detected, the suction air flow can be immediately interrupted or the process steps to be initiated at the work station after a thread breakage can be initiated.
  • the design of the sensor unit for detecting the thread force, rotational movement and/or position of the thread guide arm is basically freely selectable.
  • the sensor unit has an incremental encoder which is particularly suitable for detecting the position of the thread guide arm as well as the thread force acting on the thread guide arm.
  • control system is designed to control the drive unit for regulating the thread tension and/or storage amount of the guided thread.
  • control system enables an adjustment movement of the thread guide arm via the control system controlling the drive unit, whereby the thread guide arm can be adjusted in the direction of the thread or in an opposite direction.
  • the thread guide arm By pivoting the thread guide arm about the pivot axis into the thread path, the thread guide arm creates a loop-shaped course of the thread in the area of the thread storage unit, wherein the thread guide arm can preferably engage with the thread in the area between two thread guide rollers or eyelets arranged along a thread path in order to create a defined loop course.
  • the control system thus makes it possible to keep the thread tension constant directly by controlling the drive unit at a precise and high frequency via the thread guide arm, so that a winding process can also be carried out at particularly high winding speeds, whereby the production of cylindrical as well as conical winding packages can be carried out particularly reliably.
  • the thread guide arm is freely rotatable and has a magnetically acting first coupling element arranged at a distance from the pivot axis.
  • the drive unit also has a second magnetic coupling element which is adjustably arranged relative to the first coupling element and has a magnetically repelling effect on the first coupling element.
  • the second magnetic coupling element is arranged on the drive unit so that it can be brought into operative connection with the first coupling element via the drive unit, wherein an adjustment of the second coupling element in the direction of the first coupling element causes a displacement of the first coupling element in the same direction and thus a pivoting of the thread guide arm.
  • the thread guide arm is now freely rotatable, in particular mounted on the drive shaft of the drive unit, in contrast to known thread storage units in which the thread guide arm is forced to rotate directly by a drive shaft of the drive unit, for example via a stationary bearing on the drive shaft, and the power is therefore transmitted strictly through components that touch each other along the power flow.
  • the first and second coupling elements are aligned with each other in such a way that they exert magnetic effects that repel each other.
  • the repulsive effect between the first and second coupling elements results in a displacement of the first coupling element in accordance with the direction of movement of the second coupling element, whereby the first coupling element is pivoted about the pivot axis as a result of the connection of the first coupling element to the thread guide arm.
  • the thread guide arm is displaced about its pivot axis without contact via the drive unit depending on the set position of the second coupling element arranged on the drive unit.
  • the second coupling element is arranged on a carrier that can be adjusted by means of the drive unit, in particular coaxially, around the pivot axis of the thread guide arm.
  • the second coupling element is adjustable around the pivot axis of the thread guide arm, for which purpose the second coupling element is arranged on a the drive unit is arranged.
  • the rotation of the support around the pivot axis of the thread guide arm allows particularly space-saving rotary drives to be used to adjust the second coupling element.
  • a rotation of the second coupling element which is particularly preferably arranged at the same distance from the pivot axis as the first coupling element, offers a particularly uniform and reliable adjustment, so that a particularly precise displacement of the thread guide arm can be carried out by the control system via a displacement of the support.
  • the arrangement of the first coupling element on the thread guide arm is basically freely selectable.
  • the first coupling element is detachably attached to the thread guide arm and/or the second coupling element is detachably attached to the drive unit.
  • This embodiment of the invention makes it possible to easily change the first and/or second coupling element if necessary, so that adjustments to different production conditions, which may require different magnetic effects, can be made in a simple manner. In addition, maintenance and repair work can be carried out particularly easily and quickly.
  • the design of the drive unit for moving the second coupling element, in particular the carrier is basically freely selectable, whereby various motor drives can be used here.
  • the drive unit has an electric motor, in particular a stepper motor with a drive shaft which is connected to the carrier in a rotationally fixed manner and on which the thread guide arm is mounted so as to be freely rotatable.
  • the guide arm particularly preferably has a bearing unit, in particular a bushing element, at one free end, by means of which the thread guide arm can be placed on the free end of the drive shaft.
  • the bearing unit is designed to mount the thread guide arm so that it can rotate freely on the free end of the drive shaft, independently of any rotational movement of the drive shaft, i.e.
  • the thread guide arm also preferably has a thread guide section, in particular a thread guide eyelet or roller, at its other free end for contacting and guiding the thread. This allows the leverage of the thread guide arm to be used to the maximum. Others as required Selected arrangement locations of both the bearing unit and the thread guide section along the longitudinal axis of the thread guide arm are also conceivable according to a further preferred embodiment.
  • the drive shaft serves to accommodate the thread guide arm in a freely rotatable manner, whereby a freely rotatable bearing or free rotational mobility is generally understood to mean a torque-free connection between the drive shaft and the thread guide arm, so that the drive shaft serves only for pivoting, in particular for pivoting the thread guide arm, but does not transmit any torque to it.
  • a corresponding design of the thread storage unit also enables its particularly compact design, whereby it is ensured in a particularly reliable manner that a second coupling element arranged on the carrier can be adjusted around the drive shaft over the same circumference as the first coupling element, which is arranged on the thread guide arm at a corresponding distance from the axis of the drive shaft.
  • the design such that the first coupling element and the second coupling element achieve a magnetically repulsive effect on each other is basically freely selectable.
  • the first and/or second coupling element can be designed as electromagnets whose magnetic fields are aligned in such a way that they produce a repulsive effect on each other.
  • the electromagnets can be controlled via the control system so that different magnetic fields can be generated via them if necessary, so that the repulsive effect can be set and in particular regulated via the corresponding control system.
  • the first coupling element and the second coupling element are designed as permanent magnets.
  • the use of permanent magnets as coupling elements, which are arranged in a correspondingly aligned manner on the thread guide arm and the carrier, represents a particularly simple, low-maintenance and cost-effective way of providing a magnetic repulsion effect.
  • the selection of the permanent magnets can be used to desired repulsion effect can be determined.
  • connection of the carrier to the drive unit in particular to a preferably provided drive shaft of an electric motor, can be made by simple flange connections.
  • the carrier is arranged on a coupling disc arranged coaxially to the drive shaft and connected to the drive shaft in a rotationally fixed manner.
  • the use of a coupling disc ensures particularly reliable displacement of the carrier and the second coupling element connected to the carrier around the pivot axis of the thread guide arm.
  • the coupling disc can rest against a corresponding counter surface of an advantageously provided electric motor for surface guidance.
  • a method for monitoring the thread path of a running thread at a work station of a textile machine is proposed.
  • the sensor unit transmits sensor information about the thread force acting on the thread guide arm, a rotational movement and/or position of the thread guide arm to a control system assigned to the work station.
  • the control system evaluates the thread force, rotational movement and/or position of the thread guide arm acting on the thread guide arm based on the transmitted sensor information. If a thread break is detected, the control system interrupts the work process at the work station or, if an empty pneumatic thread storage is detected, deactivates the suction air flow operating it.
  • Figure 1 shows in a perspective schematic view a thread storage unit 1 according to an embodiment, which is connected to a connection plate 17 for arrangement at a work station 20, in particular a spinning or winding station, of a textile machine not shown here.
  • Figures 2 to 4 show in perspective schematic view an enlarged representation of a portion of the Figure 1 shown thread storage unit 1 as well as a perspective schematic representation of a thread guide arm 2 of this thread storage unit 1.
  • Figure 5 shows in a schematic view the structure of a work station 20 of a textile machine with the Figure 1 shown thread storage unit 1.
  • the thread storage unit 1 has a thread guide arm 2, which is arranged at the work station 20 with a thread guide eyelet 13 arranged at its free end in the thread path of a thread 23 to be wound onto a winding bobbin of a thread winding device 22, wherein the thread 23 is guided through the thread guide eyelet 13.
  • the thread guide arm 2 is pivotably mounted on a drive shaft 16 of an electric motor 5 of a drive unit 4 of the thread storage unit 1, wherein for this purpose the thread guide arm 2 has a bushing 18 for arrangement on the free end of the drive shaft 16, so that the thread guide arm 2 is mounted on the drive shaft 16 without torque.
  • the bushing 18 is also connected to a holder 9 connected to the thread guide arm 2, which has an opening for receiving a first coupling element 6 designed as a permanent magnet.
  • the drive shaft 16 of the electric motor 5 is connected in a rotationally fixed manner to a coupling disk 14 which is arranged coaxially to the drive shaft 16.
  • a carrier 8 is arranged on the coupling disk 14, which has a further bushing 12 for receiving a further permanent magnet as a second coupling element 7.
  • the permanent magnets on the thread guide arm 2 and the carrier 8 are aligned with one another in such a way that they exert a mutually repelling magnetic effect.
  • the operating electric motor 5 thus causes a corresponding pivoting of the thread guide arm 2 about the drive shaft 16, which defines a pivot axis S, without contact, wherein the control of the electric motor 5 takes place via a control system not shown here via the connection 19.
  • a sensor unit 3 arranged above - with reference to the drawing - the drive shaft 16 on a housing cover 11 of the housing 10 is used to detect the position of the thread guide arm 2, which is arranged with its sensor detecting the pivot angle coaxially to a connection element 15 connected to the thread guide arm 2, which in turn extends in the longitudinal axis direction of the drive shaft 16.
  • the sensor unit 3 can be used to determine particularly reliably at least the thread force acting on the thread guide arm 2, the rotational movement or the position of the thread guide arm 2 and to determine deviations of the thread guide arm 2 from the position set by the drive unit 4 by transmitting corresponding sensor information to the control system. If, for example, the thread force or the thread tension increases, this causes the thread guide arm 2 to be displaced in the direction of the second coupling element 7 against the spring force generated by the magnetic repulsion effect. Based on this, the coupling disk 14 can then be displaced back via the control system.
  • Figure 5 shows a schematic representation of a work station 20 designed as a spinning station of the textile machine not shown here with a thread feed device 21 designed as a spinning unit, which is, for example, an air spinning or rotor spinning unit, to the thread winding device 22 thread 23 extending in the thread running direction F.
  • a fiber composite 25 fed to the thread delivery device 21 is provided with a twist after passing through a drafting device (not shown here) in the case of an air spinning machine or an opening unit in the case of a rotor spinning machine within the thread delivery device 21.
  • a take-off device 26 Downstream of the thread delivery device 21 - in relation to the thread running direction F - is a take-off device 26 which, with the aid of two take-off rollers 27a, 27b forming a pair of take-off rollers, draws the thread 23 emerging from the thread delivery device 21 from the thread delivery device 21 and transports it in the direction of the thread winding direction 22. Downstream of the take-off device 26 is in turn a pneumatic thread storage 28 with a thread storage tube 29.
  • the thread storage unit 1 is arranged downstream of the pneumatic thread storage 28 along the thread path, wherein the thread storage unit 1 is positioned on the thread path in such a way that the thread guide arm 2 can pivot into the thread path in order to force the running thread 23 out of its thread path.
  • the thread 23 comes into contact with thread guide rollers (not shown here) arranged in the area of the thread storage unit 1, whereby a thread loop of a defined size is formed between them.
  • the size of the thread loop is varied as required by the thread storage unit 1 depending on the position of the thread guide arm 2 via the control system, which controls the electric motor 5 and consequently the thread guide arm 2, in order to set and regulate a thread tension that is advantageously kept constant for the bobbin travel.
  • the arrangement of the thread storage unit 1 in the area of the pneumatic thread storage 28 makes it possible to detect an emptying of the pneumatic thread storage 28 and/or a thread breakage by means of the sensor unit 3 recording the sensor information on the position of the thread guide arm 2 and/or the thread force applied by the thread 23 to the thread guide arm 2 via the control system connected to the sensor unit 3 on the thread storage unit 1, so that a laborious, theoretical determination of the thread length in the thread storage tube 29 and a separate thread monitor for detecting a thread breakage can be dispensed with.
  • the control system compares the sensor information with known characteristic values previously stored in the control system or in a readable storage unit coupled to the control system, from which the operating states can be determined. can be closed. In the event of an empty yarn storage tube 29, the control system can be used to immediately deactivate the drive unit generating the suction air flow in the yarn storage tube 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP24176195.6A 2023-05-31 2024-05-16 Poste de travail d'une machine textile et procédé de surveillance du fil de déplacement d'un fil se déplaçant sur un poste de travail d'une machine textile Pending EP4470952A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU504357A LU504357B1 (de) 2023-05-31 2023-05-31 Arbeitsstelle einer Textilmaschine sowie Verfahren zur Überwachung des Fadenlaufs eines laufenden Fadens an einer Arbeitsstelle einer Textilmaschine

Publications (1)

Publication Number Publication Date
EP4470952A1 true EP4470952A1 (fr) 2024-12-04

Family

ID=86851762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24176195.6A Pending EP4470952A1 (fr) 2023-05-31 2024-05-16 Poste de travail d'une machine textile et procédé de surveillance du fil de déplacement d'un fil se déplaçant sur un poste de travail d'une machine textile

Country Status (4)

Country Link
US (1) US20240400341A1 (fr)
EP (1) EP4470952A1 (fr)
CN (1) CN119059366A (fr)
LU (1) LU504357B1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184387B1 (fr) * 2008-11-08 2014-04-09 Saurer Germany GmbH & Co. KG Procédé de fonctionnement d'une bobineuse à extrémité ouverte et bobineuse à extrémité ouverte
EP2955142A1 (fr) 2014-06-09 2015-12-16 Rieter CZ s.r.o. Procédé pour éliminer une boucle de fil lors de l'enroulement de fil sur une bobine croisée sur un métier à filer à une vitesse constante du fil ainsi produit et dispositif pour son exécution
EP3715294A1 (fr) * 2019-03-29 2020-09-30 Maschinenfabrik Rieter Ag Procédé de commande d'un poste de travail d'une machine textile, dispositif pour la mise en ouvre du procédé
EP4101800A1 (fr) * 2021-06-10 2022-12-14 Saurer Spinning Solutions GmbH & Co. KG Unité de réservoir de fil pour un poste de travail d'une machine textile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184387B1 (fr) * 2008-11-08 2014-04-09 Saurer Germany GmbH & Co. KG Procédé de fonctionnement d'une bobineuse à extrémité ouverte et bobineuse à extrémité ouverte
EP2955142A1 (fr) 2014-06-09 2015-12-16 Rieter CZ s.r.o. Procédé pour éliminer une boucle de fil lors de l'enroulement de fil sur une bobine croisée sur un métier à filer à une vitesse constante du fil ainsi produit et dispositif pour son exécution
EP3715294A1 (fr) * 2019-03-29 2020-09-30 Maschinenfabrik Rieter Ag Procédé de commande d'un poste de travail d'une machine textile, dispositif pour la mise en ouvre du procédé
EP4101800A1 (fr) * 2021-06-10 2022-12-14 Saurer Spinning Solutions GmbH & Co. KG Unité de réservoir de fil pour un poste de travail d'une machine textile

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