EP4074639A1 - Wickelmaschine mit verbessertem motorischem fadenendverlängerungshebel und zugehöriges verfahren zum steuern der position des fadenendverlängerungshebels - Google Patents

Wickelmaschine mit verbessertem motorischem fadenendverlängerungshebel und zugehöriges verfahren zum steuern der position des fadenendverlängerungshebels Download PDF

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Publication number
EP4074639A1
EP4074639A1 EP22164640.9A EP22164640A EP4074639A1 EP 4074639 A1 EP4074639 A1 EP 4074639A1 EP 22164640 A EP22164640 A EP 22164640A EP 4074639 A1 EP4074639 A1 EP 4074639A1
Authority
EP
European Patent Office
Prior art keywords
yarn
extension lever
end extension
winding machine
yarn end
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
EP22164640.9A
Other languages
English (en)
French (fr)
Inventor
Massimo Velludo
Mauro Del Pup
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 EP4074639A1 publication Critical patent/EP4074639A1/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
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B65H67/083—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement handling the yarn-end of the new supply 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
    • 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
    • B65H54/023—Hank to spool winders
    • 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
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
    • 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 winding machine provided with an improved motorized yarn end extension lever and to the relative method of controlling the position of the yarn end extension lever.
  • the automatic winding machine includes several winding units that allow the yarn to be unwound from several bobbins or from a reel to wind it into a new reel: during this process, defects are eliminated from the unwound yarn, before rewinding said yarn onto the reel.
  • the term “yarn” or “monofilament” or “continuous yarn” means a single filament or continuous strand (for example in the case of silk, artificial, or synthetic fibers), while the term “yarn” means the set of fibrils of variable length that are parallelized and joined by twisting. In the following, one or the other term will be used without distinction, it being understood that the applications of this invention are not limited to either type.
  • each winding unit there is a yarn quality control sensor, also called clearer, which verifies the "fitness" of the yarn being unwound; when a defect is detected, the yarn is cut and the winding is immediately interrupted; the cycle then starts with the aim of eliminating the portion of yarn containing the defect from the bobbin and capturing and then bringing the two ends of the yarn (one coming from the reel and the other from the bobbin) inside the joining device by means of two dedicated end gripping nozzles.
  • a yarn quality control sensor also called clearer
  • the two yarns are introduced in the right position inside the yarn-joiner device and also with the right tension before starting the joining cycle: in particular, the appearance, the resistance and the repeatability of the joining process are increasingly pressing demands from end customers.
  • the joining cycle starts, joining the two ends recreating the yarn and one is then ready to start again with the reeling.
  • the restart after a joining cycle is also a critical step, because the yarn must return to its natural winding path without creating sudden changes in tension or twisting of the yarn which may be seen by the clearer (3) as defects and generate unjustified cuts, interruptions not due to winding and therefore loss of production.
  • reference numeral 4 globally denotes an overall view of a winding machine according to the present invention.
  • the winding machine 4 comprises at least one winding unit 6, each having a bobbin 8 provided with a yarn 10 wound around a tube 12, and a reel 14 comprising said yarn 10 unwound from said bobbin 8 and in turn wound on a relative tube 12.
  • the winding unit 6 also comprises means for unwinding the yarn 10 from the bobbin 8 and winding the yarn 10 onto the reel 14 in a known manner.
  • the winding unit 6 comprises a yarn quality control device 16, called clearer, fitted with a quality sensor 18 operatively connected to yarn cutting means operable in the event of detection of a defect by said quality sensor 18.
  • the cutting means of the yarn-joiner device 22 may be either on the clearer edge or separate.
  • the winding unit 6 also comprises a yarn-joiner device 22 configured to join together the yarn ends generated by the cutting of the yarn 10 by said cutting means 20, a first end 24 being connected to the yarn 10 on the bobbin side 8 and a second end 26 being connected to the yarn 10 on the spool side 14.
  • the winding unit 6 comprises a yarn end extension lever 28 configured to move from a rest position 28a in which it does not interfere with the winding path of the yarn to a gripping position 28b of the first end 24 in which it grips said first end 24 and to a release position 28c of the first end 24 in which it places the first end 24 at the yarn-joiner device 22.
  • the movement of displacement of the yarn end extension lever 28 between the rest 28a, grip 28b and release 28c positions may be a rotary, translational and/or roto-translational movement.
  • the yarn end extension lever 28 rotates around a preferably vertical rotation axis X-X.
  • said yarn end extension lever 28 is provided with its own independent drive means 30 for its positioning between said rest 28a, grip 28b and release 28c positions.
  • the drive means 30 preferably comprise an electric motor.
  • said electric motor is a stepper type electric motor, or a brushless motor, or a DC electric motor or an electric linear motor.
  • the drive means 30 are keyed directly onto the yarn end extension lever 28, in direct transmission.
  • the yarn end extension lever 28 is provided with a position sensor 32 for controlling its angular position.
  • said position sensor 32 is of the inductive or Hall effect type.
  • the yarn end extension lever 28 is provided with a control unit 34 operatively connected to said drive means 30 and to said position sensor 32, so as to control the position of the yarn end extension lever 28.
  • the yarn end extension lever 28 and/or the drive means 30 are provided with an encoder for controlling the angular position of the lever 28 itself.
  • the drive means 30 are operatively connected to a programmable control unit 34 so as to vary said rest 28a, and/or grip 28b and/or release 28c positions.
  • said control unit 34 is programmable to set at least one intermediate working position of the yarn end extension lever 28, between said grip 28b and release 28c positions.
  • said control unit 34 is programmable to change the speed of rotation of the yarn end extension lever 28 to switch between said rest 28a, and/or grip 28b and/or release 28c positions.
  • control unit 34 which controls the drive means also drives and interfaces with other devices of the winding unit 6 or may interface with further control units of the winding unit itself.
  • the yarn 10 runs continuously, i.e. it is unwound from the bobbin 8 and wound onto the reel 14.
  • the yarn end extension lever 28 is usually in the rest position 28a in which it does not interfere with the sliding of the yarn 10.
  • the yarn is cut, the winding is stopped and the two end gripping openings 40, 42 intercept the first end 24 on the bobbin side and the second end 26 on the reel side, respectively.
  • control unit 34 the rotation of the yarn end extension lever 28 is commanded between said rest 28a, grip 28b and release 28c positions of the first end 24.
  • the yarn end extension lever 28 moves to the gripping position 28b, rotating towards the yarn 10 so as to capture the first end 24 and bring it, to the release position 28c, at the yarn-joiner device 22.
  • the yarn end extension lever then returns to the rest position 28a.
  • the present invention it is possible to provide for the step of modifying said grip 28b and release 28c of the first end 24 according to the operating conditions of the winding machine 4, so as to adjust the tension of the yarn 10 on the bobbin side 8 before the joining cycle by the yarn-joiner device 22 and specifically according to the type of yarn used.
  • the step is provided of defining/modifying the speed at which the yarn end extension lever 28 returns to its rest position 28a after joining has taken place while resuming winding, so as to control the yarn 10 on the bobbin side 8 and release it, preventing the formation of kinks.
  • the present invention overcomes the drawbacks of the prior art.
  • the described solution allows the operation of the yarn end extension device to be adapted as desired so as to make it effective and repetitive when the types of yarn used vary.
  • the winding machine allows defining and modifying the end-of-stroke of the yarn end extension lever in a dynamic and centralized manner, and therefore "adjusting" the tension of the section of the yarn coming from the spool side immediately before the joining cycle and specifically for each type of yarn (lycra, cotton, polyester, wool, mixed elastic, etc.).
  • the solution according to the invention makes it possible to define the speed with which the yarn end extension lever returns to its zero position (28-a) once the joining has taken place while the winding restarts: in fact, it is very important in this transitory step to control the yarn and not release it too quickly, otherwise "kinks" may form which may be seen as defects by the clearer which may cause subsequent stops of the winding since it would interpret these kinks as defects.
  • each end-joiner device 28-c
  • the specific end-of-stroke of each end-joiner device may be set either centrally or in a different way for each winding unit, without the need for mechanical adjustments of the yarn end extension lever to adapt it to the device itself.
  • the implementation of a device according to the present invention facilitates the production steps and reduces the manufacturing times.
EP22164640.9A 2021-04-12 2022-03-28 Wickelmaschine mit verbessertem motorischem fadenendverlängerungshebel und zugehöriges verfahren zum steuern der position des fadenendverlängerungshebels Pending EP4074639A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000009107A IT202100009107A1 (it) 2021-04-12 2021-04-12 Roccatrice con leva porgi-bandolo motorizzata perfezionata e relativo metodo di controllo della posizione della leva porgi-bandolo

Publications (1)

Publication Number Publication Date
EP4074639A1 true EP4074639A1 (de) 2022-10-19

Family

ID=76921121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22164640.9A Pending EP4074639A1 (de) 2021-04-12 2022-03-28 Wickelmaschine mit verbessertem motorischem fadenendverlängerungshebel und zugehöriges verfahren zum steuern der position des fadenendverlängerungshebels

Country Status (3)

Country Link
EP (1) EP4074639A1 (de)
CN (2) CN115196413A (de)
IT (1) IT202100009107A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787566A (en) * 1986-10-31 1988-11-29 W. Schlafhorst & Co. Method and means for guiding spliced yarn in a textile winder
DE102009024037A1 (de) * 2009-06-05 2010-12-09 Oerlikon Textile Gmbh & Co. Kg Verfahren zur Behebung einer Fadenunterbrechung an einer Arbeitsstelle einer Spulmaschine und Arbeitsstelle einer Spulmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787566A (en) * 1986-10-31 1988-11-29 W. Schlafhorst & Co. Method and means for guiding spliced yarn in a textile winder
DE102009024037A1 (de) * 2009-06-05 2010-12-09 Oerlikon Textile Gmbh & Co. Kg Verfahren zur Behebung einer Fadenunterbrechung an einer Arbeitsstelle einer Spulmaschine und Arbeitsstelle einer Spulmaschine

Also Published As

Publication number Publication date
IT202100009107A1 (it) 2022-10-12
CN217478717U (zh) 2022-09-23
CN115196413A (zh) 2022-10-18

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