EP4310043A1 - Procédé de commande de la tension d'enroulement - Google Patents

Procédé de commande de la tension d'enroulement Download PDF

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Publication number
EP4310043A1
EP4310043A1 EP23182007.7A EP23182007A EP4310043A1 EP 4310043 A1 EP4310043 A1 EP 4310043A1 EP 23182007 A EP23182007 A EP 23182007A EP 4310043 A1 EP4310043 A1 EP 4310043A1
Authority
EP
European Patent Office
Prior art keywords
winding
tension
yarn
containment element
controlling
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
Application number
EP23182007.7A
Other languages
German (de)
English (en)
Other versions
EP4310043B1 (fr
Inventor
Massimo Velludo
Mauro Gobbato
Manpreet Singh
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.)
Savio Macchine Tessili SpA
Original Assignee
Savio Macchine Tessili SpA
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 Savio Macchine Tessili SpA filed Critical Savio Macchine Tessili SpA
Publication of EP4310043A1 publication Critical patent/EP4310043A1/fr
Application granted granted Critical
Publication of EP4310043B1 publication Critical patent/EP4310043B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H59/40—Applications of tension indicators
    • 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
    • B65H57/22—Guides for filamentary materials; Supports therefor adapted to prevent excessive ballooning of material
    • 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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package
    • B65H59/06—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package by devices acting on material leaving 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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • 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
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for controlling winding tension.
  • the present invention relates to a method for controlling the winding tension in high productivity winding machines.
  • the industrial type winding machines comprise a plurality of winding units where the yarn wound in a spool is unwound, subjected to a quality control, and subsequently rewound on a tube to form a reel.
  • the yarn is collected by a thread guide cylinder, which drags the rotating reel by friction and governs the deposit of the thread so as to optimize the subsequent unravelling during the weaving step.
  • the winding units comprise the following constituent elements:
  • the device in question comprises a square-section static balloon-breaker which overlies a pair of containment components which can be opened and closed in a radial direction with respect to the spool, in which these elements are configured to lower the tension of the yarn respectively in the initial and final unravelling steps.
  • the document does not propose any methodology for using the device in order to achieve an increase in machine productivity.
  • a winding unit 14 comprising: a tension sensor 16, a thread tensioner 18, and an unravelling tension control device 20 comprising a first containment element 22 operable on command, and a second containment element 24 fixed and arranged downstream of the first containment element 22 along the winding direction of the yarn 12.
  • the method comprises the following steps:
  • thread or single thread or continuous thread refers to a single filament or continuous filament (for example in the case of silk, artificial or synthetic fibres), while the term yarn refers to a group of fibrils of varying lengths which are paralleled and joined together by twisting.
  • thread or single thread or continuous thread refers to a single filament or continuous filament (for example in the case of silk, artificial or synthetic fibres)
  • yarn refers to a group of fibrils of varying lengths which are paralleled and joined together by twisting.
  • one or the other term will be used indifferently, it being understood that the applications of the present invention are not limited to one or the other type.
  • vmax refers to the maximum winding speed which can be set based on a certain type of yarn and process conditions. In other words, it is a maximum winding speed which can be predetermined based on information regarding the yarn and/or the spool and/or specific process conditions.
  • step (a) the pressure exerted by the thread tensioner (18) can be between pmin and pmax.
  • step (b) upon reaching a predetermined tension value measured by the tension sensor 16, the winding speed can be brought to a percentage of vmax between 90% and 99%.
  • step (b) upon reaching a predetermined tension value measured by the tension sensor 16, the winding speed can be brought to a predetermined percentage of vmax around 95%.
  • step (d) if in step (d) the tension is greater than a predetermined value and the pressure is equal to pmin, then the winding speed is further lowered.
  • the predetermined operating parameter of the winding, the obtaining of the first containment element 22 is operated can be the square footage of the spool.
  • the operation of the first containment element 22 of the unravelling tension control device 20 can occur at a square footage of the spool between 40% and 60%, preferably around 50%.
  • the predetermined operating parameter of the winding upon which the first containment element 22 is operated can be for example a winding time.
  • the first containment element 22 can substantially be tubular, having a longitudinal axis x and a first through opening 26 suitable for the passage of the yarn 12 exiting from a spool 28.
  • the first containment element 22 can comprise a first containment component 30 and a second containment component 32; in which the containment components 30, 32, can be movable between: a first position in which they are spaced apart from each other, and a second position in which they are close to each other with respect to the first position.
  • the operation of the first containment element 22 provides for the first containment element 30 and the second containment element 32 to move from the first position to the second position.
  • the containment components 32, 34 in the second position can be in contact with each other.
  • the containment components 30, 32 can have an enlargement, and thus an increase in the diameter of the through opening 26 at the yarn inlet portion 12.
  • the containment components 32, 34 can be arranged on respective first arm 38 and second arm 40, which rotate with opposite directions, about respective rotation axes y, z spaced from each other, and substantially parallel to said axis x.
  • the first arm 38 and said second arm 40 can be provided with a cogwheel 42, 44 integral with the respective arms, which mesh with each other and are adapted to rotate around the respective axes y, z, so that the rotation of the first arm 38 and of the second arm 40 is synchronous.
  • the first containment element 22 can comprise movement means 46 arranged with a linear actuator 48 connected to one of the arms 38, 40.
  • the linear actuator 48 can be connected to a lever 50, arranged on one of the arms 38, 40, such that a linear movement of an operating end of the linear actuator 48 causes a rotation of the arm 40, 42.
  • the linear actuator 48 can be of the electrical type.
  • the second static type containment element 24 is arranged with a second through opening 34 comprising a base portion 36 facing the first containment element 22 in use, and can have a substantially rectangular transverse section with respect to the longitudinal axis x.
  • the second through opening 34 can have a substantially square transverse section with respect to the longitudinal axis x.
  • the side of the substantially square transverse section of the second through opening 34 can have a dimension between 20 mm and 30 mm, preferably between 24 mm and 28 mm, and even more preferably around 26 mm.
  • the base portion 36 of the second through opening 34 can have a height, according to a longitudinal direction perpendicular to the transverse section of the through opening 34, between 30 mm and 45 mm, preferably between 35 mm and 40 mm.
  • the second through opening 34 can comprise a substantially truncated-pyramid central portion 52 having a greater base at the base portion 36, in an opposite position with respect to the yarn inlet section in the second containment element 24.
  • the central truncated-pyramid portion 52 can comprise a minor base having a substantially circular shape, opposite the major base.
  • the second through opening 34 can comprise a substantially cylindrical end portion 54.
  • the winding unit 14 can comprise a programmable control unit 56 operatively connected to the tension sensor 16, the thread tensioner 18, the tension control device 20, and adapted to compare a value of an operating parameter measured with a reference value, and based on such a comparison, operating the first containment element 22 accordingly so that the first containment component 30 and the second containment component 32 pass from the first position to the second position, or to an intermediate position if present.
  • a programmable control unit 56 operatively connected to the tension sensor 16, the thread tensioner 18, the tension control device 20, and adapted to compare a value of an operating parameter measured with a reference value, and based on such a comparison, operating the first containment element 22 accordingly so that the first containment component 30 and the second containment component 32 pass from the first position to the second position, or to an intermediate position if present.
  • FIG 4 in figure 4 , three graphs are schematically depicted showing possible trends in the winding speed, tension and pressure applied.
  • the initial speed is greater than the nominal speed which would normally be used in the initial winding step.
  • the traditional adjustment of the tension by means of the thread tensioner 18 is assisted by the tension control device 20, which absorbs those tension peaks which would otherwise cause the pressure of the thread tensioner 18 to decrease too quickly to the minimum value.
  • the method can also be implemented on existing machines by means of appropriate process parameter management.
  • the graph shown in figure 5 illustrates the advantages associated with the increase in productivity (expressed in terms of winding speed) which can be achieved with the use of the method of the present invention with respect to the prior art.
  • the winding speed in the initial step and in the final step is substantially higher than the winding speed according to the prior art (depicted with a dotted line).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
EP23182007.7A 2022-07-19 2023-06-28 Procédé de commande de la tension d'enroulement Active EP4310043B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102022000015126A IT202200015126A1 (it) 2022-07-19 2022-07-19 Metodo di controllo della tensione di roccatura

Publications (2)

Publication Number Publication Date
EP4310043A1 true EP4310043A1 (fr) 2024-01-24
EP4310043B1 EP4310043B1 (fr) 2024-10-23

Family

ID=83271239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23182007.7A Active EP4310043B1 (fr) 2022-07-19 2023-06-28 Procédé de commande de la tension d'enroulement

Country Status (3)

Country Link
EP (1) EP4310043B1 (fr)
CN (1) CN117416811A (fr)
IT (1) IT202200015126A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377923A (en) * 1991-07-01 1995-01-03 Murata Kikai Kabushiki Kaisha Yarn unwinding assisting device and yarn unwinding method in an automatic winder
CN108069290A (zh) * 2016-11-11 2018-05-25 索若德国两合股份有限公司 用于操作卷绕单元的方法和绕线机
EP3950551A1 (fr) 2020-08-07 2022-02-09 Savio Macchine Tessili S.p.A. Dispositif et méthode de contrôle d'un ballon, unité d'enroulement comportant un tel dispositif

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377923A (en) * 1991-07-01 1995-01-03 Murata Kikai Kabushiki Kaisha Yarn unwinding assisting device and yarn unwinding method in an automatic winder
CN108069290A (zh) * 2016-11-11 2018-05-25 索若德国两合股份有限公司 用于操作卷绕单元的方法和绕线机
EP3950551A1 (fr) 2020-08-07 2022-02-09 Savio Macchine Tessili S.p.A. Dispositif et méthode de contrôle d'un ballon, unité d'enroulement comportant un tel dispositif

Also Published As

Publication number Publication date
IT202200015126A1 (it) 2024-01-19
CN117416811A (zh) 2024-01-19
EP4310043B1 (fr) 2024-10-23

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