EP3753889A1 - Paraffinspender, wickeleinheit mit einer solchen vorrichtung, und wickelmaschine mit einer solchen wickelvorrichtung - Google Patents

Paraffinspender, wickeleinheit mit einer solchen vorrichtung, und wickelmaschine mit einer solchen wickelvorrichtung Download PDF

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Publication number
EP3753889A1
EP3753889A1 EP20179773.5A EP20179773A EP3753889A1 EP 3753889 A1 EP3753889 A1 EP 3753889A1 EP 20179773 A EP20179773 A EP 20179773A EP 3753889 A1 EP3753889 A1 EP 3753889A1
Authority
EP
European Patent Office
Prior art keywords
paraffin
dispenser
yarn
dispensing device
winding unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20179773.5A
Other languages
English (en)
French (fr)
Inventor
Ivan BERTOLO
Giacomo MARCHESI
Giorgio Colomberotto
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 EP3753889A1 publication Critical patent/EP3753889A1/de
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
    • B65H71/00—Moistening, sizing, oiling, waxing, colouring or drying filamentary material as additional measures during package formation
    • B65H71/005—Oiling, waxing by applying solid wax cake during spooling
    • 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 paraffin dispensing device, a winding unit comprising such a device, and a winding machine comprising such a winding unit.
  • industrial-type winding machines comprise a plurality of mutually independent winding units, managed by a programmable control unit.
  • thread or monofilament or continuous filament means a single filament or continuous burr (e.g. in the case of silk, artificial or man-made fibers), while the term yarn means the set of fibrils of variable length which are parallelized and joined by twisting.
  • thread or monofilament or continuous filament means a single filament or continuous burr (e.g. in the case of silk, artificial or man-made fibers)
  • yarn means the set of fibrils of variable length which are parallelized and joined by twisting.
  • the winding unit winds a yarn onto a generally cone-shaped support to make a reel.
  • the yarn is wound onto the support with a predetermined type of winding to optimize the unwinding of the yarn from the reel.
  • the winding is made with a yarn guide which may generally be: an eyelet with alternating rectilinear movement which moves very close to the outer surface of the reel, or with a cylinder rotating around an axis substantially parallel to that of the reel, arranged with a particular geometry of seats made on its surface.
  • a yarn guide which may generally be: an eyelet with alternating rectilinear movement which moves very close to the outer surface of the reel, or with a cylinder rotating around an axis substantially parallel to that of the reel, arranged with a particular geometry of seats made on its surface.
  • the yarn guide cylinder seats are referred to as traversing throats, and simulate the movement of a movable eyelet.
  • the winding machines may be provided with a paraffin dispensing device on which the yarn is made to slide before it comes into contact with the yarn guide.
  • the paraffin dispensing device is mainly installed on winding units where the yarn needs to be lubricated for further processing, such as knitting.
  • the yarns to be inserted into the needles are lubricated precisely to allow the yarn to slide smoothly through the needles without inducing breakages or undesirable effects, such as excessive tension variations. Therefore, such a lubrication must be as uniform as possible.
  • the paraffin dispensing device may be positioned before the knotting device or the yarn cleaner, or afterward, e.g. according to the layout of the machine.
  • the device comprises a support adapted to partially support the paraffin so that the latter can protrude and come into contact with the yarn.
  • Effective dispensing of paraffin on the yarn may reduce the friction coefficient by up to 50% under the same processing conditions. However, excessive dispensing may, on the contrary, increase the friction coefficient.
  • paraffin dispensing is subject to many variables, e.g. such as yarn type, paraffin type, specific paraffin characteristics, environmental conditions during winding, yarn moisture and conditioning, interference of the paraffin on the yarn path, paraffin rotation speed, and winding speed.
  • Figure 1 shows a paraffin dispensing device for a winding unit 14, according to the present invention, which is indicated by reference numeral 12.
  • the paraffin dispensing device 12 comprises a first paraffin dispenser 20.
  • the first paraffin dispenser comprises a first support 202 adapted to partially contain a first paraffin element 204, and first motorized means 206 adapted to rotate the first paraffin element 204 about a first rotation axis X.
  • the paraffin dispensing device 12 further comprises a second paraffin dispenser 40.
  • the second paraffin dispenser 40 comprises a second support 402 adapted to partially contain a second paraffin element 404 and second motorized means 406 adapted to rotate the second paraffin element 404 about a second rotation axis Y.
  • the first rotation axis X and the second rotation axis Y are parallel to each other.
  • the first support 202 may comprise a substantially cylindrical element 208 within which the first paraffin element 204 may be housed.
  • the substantially cylindrical element 208, with axis coinciding with the axis X, may be arranged at one end 210 with thrust means (not shown) adapted to push the first paraffin element 204 to protrude from an outlet end 212 opposite to the previous one.
  • the thrust means may comprise elastic means, e.g. spring-loaded means of a type known to the person skilled in the art.
  • such thrust means may be arranged between a bottom 205 of the substantially cylindrical element 208 and the paraffin element 204.
  • the first paraffin element 204 may be substantially cylindrical, arranged with a central through-hole.
  • the thrust means are adapted to push the first paraffin element 204 towards the outside of the substantially cylindrical element, in particular against a first striker 214.
  • the first striker 214 may comprise three rounded support pins 216, 218, 220 protruding towards the outlet end 212 according to directions parallel to the first rotation axis X.
  • the three rounded support pins 216, 218, 220 can be placed mutually equidistant along a circumference.
  • the first motorized means 206 may comprise a synchronous electric motor in pulsed direct current, preferably with brushless, stepper-type electronic management (stepper motor).
  • the first motorized means 206 may be set up near the outlet end 212 of the first support 202.
  • the motorized means 206 may comprise a drive shaft 207, which protrudes from the motorized means 206 provided with a coupling end 209.
  • the drive shaft 207 is adapted to pass through a longitudinal hole of the paraffin element 204 to fit the bottom 205 of the substantially cylindrical element 208.
  • the coupling between the bottom 205 and coupling end 209 may be of the bayonet type.
  • the second paraffin dispenser 40 may be substantially equal to the first paraffin dispenser 20.
  • the second support 402 may comprise a substantially cylindrical element 408 having axis coinciding with the rotation axis Y, inside which the first paraffin element 404 may be housed.
  • the substantially cylindrical element 408 may be arranged at one end 410 with thrust means (not shown) adapted to push the first paraffin element 404 to protrude from an output end 412 opposite to the previous one.
  • the thrust means may comprise elastic means, e.g. spring-loaded means of a type known to the person skilled in the art.
  • such thrust means may be arranged between a bottom 405 of the substantially cylindrical element 408 and the paraffin element 404.
  • the second paraffin element 404 can be substantially cylindrical, arranged with a central through-hole.
  • the thrust means are adapted to push the second paraffin element 404 towards the outside of the substantially cylindrical element, in particular against a second striker 414.
  • the second striker 414 may comprise three rounded support pins 416, 418, 420 protruding towards the outlet end 412 according to directions parallel to the first rotation axis X.
  • the three rounded support pins 416, 418, 420 can be placed mutually equidistant along a circumference.
  • the second motorized means 406 may comprise a synchronous electric motor in pulsed direct current, preferably brushless stepper type electronic management (stepper motor).
  • the second motorized means 406 may be set up near the outlet end 412 of the second support 402.
  • the motorized means 406 may comprise a drive shaft 407, which protrudes from the motorized means 406 provided with a coupling end 409.
  • the drive shaft 407 is adapted to pass through a longitudinal hole of the paraffin element 404 to fit the bottom 405 of the substantially cylindrical element 408.
  • the coupling between the bottom 405 and coupling end 409 may be of the bayonet type.
  • the first paraffin dispenser 20 and the second paraffin dispenser 40 are positioned so that their rotation axes X and Y are perpendicular to the yarn running direction, indicated by reference Z in the accompanying drawings.
  • the first paraffin dispenser 20 and the second paraffin dispenser 40 are positioned in front of each other, so that the first paraffin element 204 and the second paraffin element 404 are facing but staggered along the yarn running direction Z.
  • the first paraffin dispenser 20 and the second paraffin dispenser 40 can overlap along the yarn running direction Z. This embodiment is shown in the accompanying drawings.
  • the first paraffin dispenser 20 is adapted to rotate the first paraffin element 204 in the same direction as the rotation of the second paraffin element 404 that is adapted to be imparted by the second paraffin dispenser 40.
  • the first paraffin dispenser 20 is adapted to rotate the first paraffin element 204 in the opposite direction with respect to the rotation of the second paraffin element 404 that is adapted to be imparted by the second paraffin dispenser 40.
  • the embodiment which provides for the first paraffin dispenser 20 and the second paraffin dispenser 40 overlapping along the yarn running direction, in which both have the same rotation direction, was particularly advantageous.
  • the preferred rotation direction is clockwise.
  • the first paraffin dispenser 20 and the second paraffin dispenser 40 can share the same motorized means.
  • motorized means 206 of the first paraffin dispenser 20 which also transmit motion to the second paraffin dispenser 40 through a transmission may be provided.
  • motorized means 406 of the second paraffin dispenser 40 which also transmit the motion to the first paraffin dispenser 20 through a transmission may be provided.
  • the first paraffin element 204 and the second paraffin element 404 provide the same type of paraffin.
  • the first paraffin element 204 and the second paraffin element 404 provide the same type of paraffin.
  • This solution is particularly advantageous in the paraffin coating of particular types of yarns, such as multiple wound yarn and twisted yarns.
  • the winding unit 14 according to the present invention comprises a paraffin dispensing device 12 as just described.
  • the winding unit 14 may comprise a feeding pack 70, a yarn cleaner 50, a yarn guide system 80, and a reel holder arm.
  • the first paraffin dispenser 20 and the second paraffin dispenser 40 may be positioned between the yarn cleaner 50 and the yarn guide system 80.
  • the first paraffin dispenser 20 and the second paraffin dispenser 40 may be positioned between the feeding grill and the yarn cleaner 50.
  • the first paraffin dispenser 20 may be positioned between the yarn cleaner 50 and the yarn guide 80, and the second paraffin dispenser may be positioned between the feeding grill and the yarn cleaner 50.
  • the paraffin dispensing device allows a uniform and constant dispensing of paraffin over time. Moreover, with the paraffin dispensing device according to the present invention, it is possible to obtain a greater paraffin deposit with all that it implies, in terms of a reduced friction coefficient over the whole length of the yarn, and a very low variance coefficient.
  • implementing the paraffin coating process with the device suggested with the present invention is equivalent to implementing a double paraffin coating with a "mono" paraffin dispenser without having the disadvantages of the double passage in a "mono" paraffin dispenser in terms of double winding times, double stress phenomena on the yarn and double wear phenomena on the yarn itself because the yarn surfaces inevitably rub against one another during the steps of unwinding and rewinding on the reel.
  • paraffin dispensing devices there may be embodiments in which more than two, e.g. three, paraffin dispensing devices are included.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP20179773.5A 2019-06-21 2020-06-12 Paraffinspender, wickeleinheit mit einer solchen vorrichtung, und wickelmaschine mit einer solchen wickelvorrichtung Pending EP3753889A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT201900009684 2019-06-21

Publications (1)

Publication Number Publication Date
EP3753889A1 true EP3753889A1 (de) 2020-12-23

Family

ID=68234231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20179773.5A Pending EP3753889A1 (de) 2019-06-21 2020-06-12 Paraffinspender, wickeleinheit mit einer solchen vorrichtung, und wickelmaschine mit einer solchen wickelvorrichtung

Country Status (2)

Country Link
EP (1) EP3753889A1 (de)
CN (2) CN112110292A (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105621158A (zh) * 2014-11-05 2016-06-01 江苏景盟针织企业有限公司 纱线上蜡装置
CN105645185A (zh) * 2016-03-07 2016-06-08 苏州廖若机电科技有限公司 一种可对纱线均匀上蜡的装置
CN103738797B (zh) * 2013-12-10 2016-06-08 苏州瑞日纺织科技有限公司 一种络筒机的纱线上蜡装置
CN107473004A (zh) * 2017-06-29 2017-12-15 湖北鄂泰纺织有限公司 一种生产包芯纱的自动络筒机
CN109137203A (zh) * 2018-11-09 2019-01-04 绍兴新越机械制造有限公司 一种纺织用防止蜡柱损坏的纱线上蜡装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103738797B (zh) * 2013-12-10 2016-06-08 苏州瑞日纺织科技有限公司 一种络筒机的纱线上蜡装置
CN105621158A (zh) * 2014-11-05 2016-06-01 江苏景盟针织企业有限公司 纱线上蜡装置
CN105645185A (zh) * 2016-03-07 2016-06-08 苏州廖若机电科技有限公司 一种可对纱线均匀上蜡的装置
CN107473004A (zh) * 2017-06-29 2017-12-15 湖北鄂泰纺织有限公司 一种生产包芯纱的自动络筒机
CN109137203A (zh) * 2018-11-09 2019-01-04 绍兴新越机械制造有限公司 一种纺织用防止蜡柱损坏的纱线上蜡装置

Also Published As

Publication number Publication date
CN212832118U (zh) 2021-03-30
CN112110292A (zh) 2020-12-22

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