EP3822207B1 - Rope knotting arrangement - Google Patents

Rope knotting arrangement Download PDF

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Publication number
EP3822207B1
EP3822207B1 EP19208444.0A EP19208444A EP3822207B1 EP 3822207 B1 EP3822207 B1 EP 3822207B1 EP 19208444 A EP19208444 A EP 19208444A EP 3822207 B1 EP3822207 B1 EP 3822207B1
Authority
EP
European Patent Office
Prior art keywords
rope
arrangement according
knot
actuator
cover
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.)
Active
Application number
EP19208444.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3822207A1 (en
Inventor
Enzo Paoli
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.)
Karl Mayer Rotal SRL
Original Assignee
Karl Mayer Rotal SRL
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 Karl Mayer Rotal SRL filed Critical Karl Mayer Rotal SRL
Priority to EP19208444.0A priority Critical patent/EP3822207B1/en
Priority to ES19208444T priority patent/ES2970444T3/es
Priority to JP2020180297A priority patent/JP7309679B2/ja
Priority to CN202011259876.XA priority patent/CN112850368B/zh
Publication of EP3822207A1 publication Critical patent/EP3822207A1/en
Application granted granted Critical
Publication of EP3822207B1 publication Critical patent/EP3822207B1/en
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
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/04—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by knotting
    • 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
    • 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
    • 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
    • B65H2701/35—Ropes, lines

Definitions

  • a rope in the textile industry is formed by a bundle of a larger number of threads.
  • the threads are to be processed simultaneously, for example in a rope-dying process.
  • a certain length of a rope is wound on a so-called "ball".
  • the number of ropes involved typically ranges between 12 and 40 or even more and the batch change, i.e. knotting the heads of the new ropes to the tail of the running-out ropes must be done for all of them in a time as quick as possible, in order to save time and reduce wastes. This requires a relevant number of operators to work simultaneously on this task.
  • US 4 984 436 A shows a thread exchange device, in particular for knitting machines.
  • This device comprises a winding finger which can be rotated about a vertical axis to form a loop of a "fresh" thread.
  • US 3 892 432 A shows a further knotting arrangement for forming a knot between two yarn elements.
  • the knotting arrangement comprises two plates each having a groove through which both yarn elements are guided.
  • the knotting arrangement comprises a trigger acting on the two yarn elements to form a loop.
  • EP 1 524 341 A1 shows a method and apparatus for changing of threads.
  • the apparatus comprises a slider which is movable along a frame, the frame comprises a number of clamping positions which can be activated or deactivated by the slider.
  • the slider comprises a commercially available knotting means.
  • US 4 531 385 A shows a method for feeding yarns of different colours to a knitting machine and a knitting machine for carrying out said method.
  • the knitting machine comprises a knotting station forming a knot between two threads.
  • US 5 437 182 A shows another apparatus having a knotting machine which is movable along clamping rails.
  • JP H04-28671 A discloses a delivery control method of a winding cord in formation of a transmission belt.
  • WO 2019/155346 A1 shows a method and an improved yarn feeder system and device for optimizing yarn feed to a textile machine operating highly discontinuously or with alternating motion.
  • US 2002/047034 A1 shows a friction feed wheel mechanism with vibration excitation.
  • the object underlying the invention is to facilitate processing of ropes.
  • a rope can run through the first rope path until the ball is almost completely unwound.
  • a fresh rope is held in readiness to be knotted to the first rope.
  • the second rope is guided through the second rope path and can be applied to the knot forming means which serve for the preparation of the knot forming.
  • the knot forming means is shifted to the second rope path so that the second rope can run through the second rope path and through the knot forming means, wherein the first rope path is used to insert another rope and to make it ready for a further knotting process once the end of the rope passing through the second rope path approaches.
  • the knot forming means can remain stationary wherein the first and the second rope path are moved in relation to the knot forming means.
  • the knot forming means comprise a rope passage in a rope cover which is connected to a rope cover actuator.
  • the rope cover is thus moveable in relation to the rope passage. This means, that the leading end of a fresh rope can be arranged around the rope cover without affecting the other rope running through the rope passage.
  • the rope cover is actuated and comes free from the fresh or new rope, so that the new rope can come into contact with the old rope to form the knot.
  • the knot forming preparation requires only that an operator guides the leading edge of the new rope in a certain way around the rope cover. However, since this handling of the leading end of the new or fresh rope can be performed in the time in which the old rope is processed and runs through the rope passage, the operator has enough time to perform this step of operation with the necessary accuracy.
  • the knot forming means comprise at least a rod outside the rope cover which is connected to a rod actuator, wherein a gap is provided between the rope cover and the rod.
  • the operator can now guide the leading end of the fresh rope not only around the rope cover and through the gap between the rope cover and the rod, but he can guide the fresh rope in addition outside the rod which facilitates the knot forming.
  • two rods are provided, one for each rope path.
  • the rope cover actuator and the rod actuator are connected to common control means, wherein the control means activate the rod actuator after the rope cover actuator.
  • the control means activate the rod actuator after the rope cover actuator.
  • first clamping means are connected to a first clamping means actuator and the second clamping means are connected to a second clamping means actuator, wherein the clamping means actuators are connected to the control means.
  • the operation of the clamping means actuators can be synchronized with the operation of the rope cover actuator and the rod actuator.
  • the clamping means can be used to hold the ropes or part of the ropes during the knot forming process.
  • control means comprise rope end detection means. This means that the control means can detect that the end of the old rope approaches. The control means can stop the further pulling of the old rope from the ball and can start the knot forming process with the leading end of the fresh or new rope.
  • control means is connected to a knot finishing sensor.
  • the knot finishing sensor indicates that the knot has been formed with sufficient strength. As soon as the knot forming process has been completed, it is possible to continue the rope processing, wherein the trailing end of the old rope draws or pulls the leading end of the new rope through the rope processing, like a dying process.
  • the knot finishing sensor comprises a force sensor.
  • the force sensor can detect the force with which one of the clamping means of both clamping means is actuated. When this force exceeds a predetermined value, the knot forming process has been finished and the knot is created with sufficient strength.
  • the knot finishing sensor comprises a stroke length sensor.
  • the clamping means pull the rope to tighten the knot.
  • the control means acknowledges that the knot is properly tensioned.
  • a rope storage is arranged downstream the knot forming means.
  • the rope storage can be used to keep a certain length of the rope for processing. This length can be processed during the knot forming. Thus, a continuous rope processing can be achieved.
  • the rope storage comprises an outlet drive at an outlet.
  • the outlet drive can be used to control the tension of the rope downstream the knotting arrangement.
  • the rope can further be processed with a predetermined tension, which is beneficial to achieve a good quality of the rope.
  • the outlet drive can even be used without a knotting arrangement to control the tension of the rope. It can even be used without a rope storage so that the tension of the rope is controlled when the rope is further pro-cessec.
  • the rope storage comprises an inlet drive at an inlet, wherein the inlet drive and the outlet drive are operable independently of each other.
  • the inlet drive can be used to "fill" the rope storage in that it supplies the rope faster than the outlet drive withdraws the rope from the rope storage. Once the rope storage is sufficiently filled, both drives can be operated at the same speed.
  • the inlet drive stops operation or operates with a reduced speed, so that the knot forming process can be performed with stationary or almost stationary rope ends.
  • the inlet drive can, however, be used to tighten the knot.
  • a pulley is arranged between the inlet and the outlet.
  • the rope is guided between the inlet drive, the pulley, and the outlet drive. This allows for a stable operation of the rope storage.
  • the inlet drive and/or the outlet drive comprises a wheel equipped with lamellae, wherein each lamella has a recess at a radially outer end.
  • the recess takes the rope, so that a good engagement between the drive and the rope is achieved.
  • the recesses of adjacent lamellae are offset from one another in a direction of an axis of rotation of the respective drive. This means that the rope meanders between the lamellae which increases the engagement between the rope and the drive.
  • Fig. 1 schematically shows a rope knotting arrangement 1 in which a first ball 2 and a second ball 3 are arranged in a creel. A first rope 4 is wound on the first ball 2 and a second rope 5 is wound on the second ball 3.
  • the first rope 4 is processed, i.e. it is taken out of the rope knotting arrangement 1 at a point 6 to be supplied to a processing unit, for example a rope-dying machine.
  • the rope knotting arrangement 1 comprises an arrangement 7 of two rope paths and knot forming means 8 which will be explained later. Furthermore, the rope knotting arrangement 1 comprises a rope storage 9 which will likewise be explained later on.
  • the rope storage 9 comprises an input drive 10 at an inlet of the rope storage 9 and an outlet drive 11 at an outlet of the rope storage 9.
  • a pulley 12 is arranged between the inlet drive 10 and the outlet drive 11. The pulley 12 is moveable along a vertical stand 13.
  • the inlet drive 10 comprises a wheel 14 equipped with lamellae 15. Each lamella comprises a recess 16 at a radially outer end. The recesses 16 of adjacent lamellae 15 are offset from one another in a direction parallel to an axis of rotation of the inlet drive 10.
  • the outlet drive 11 is likewise connected to a wheel 17 having lamellae 18 which have recesses 19 which are offset from one another in the direction of the axis of rotation.
  • the rope 4 which is guided over the wheel 14 of the inlet drive 10 and over the wheel 17 of the outer drive 11 is forced to meander through the recesses 16, 19 of the two wheels 14, 17, so that the rope 4 is sufficiently engaged with the wheels 14, 17.
  • the inlet drive 10 and the outlet drive 11 can be operated independently of each other. In order to fill the rope storage 9 the inlet drive 10 runs faster than the outlet drive 11. Once the rope storage 9 is sufficiently filled with the rope 4, both drives 10, 11 are operated at the same speed. During a knot forming process the inlet drive 10 stops or is operated with a low speed whereas the outlet drive 11 operates with the same speed or a slightly slower speed than before.
  • the outlet drive 11 is not only used to withdraw the rope 4 out of the rope storage 9. It can in addition be used to control the tension of the rope 4 which is beneficial for further processing of the rope 4.
  • a drive like the outlet drive 11 can be used without rope storage 9 to control the tension of the rope 4 in a downstream process.
  • the processing of the rope 4 can be interrupted during the knot forming process.
  • the outlet drive 11 and/or the inlet drive 10 can have forms different from the embodiment shown as long as the enable sufficient engagement with the rope 4.
  • Fig. 3 shows the knot forming means 8 in more detail.
  • the knot forming means 8 comprise a funnel 20 at an inlet end.
  • a rope (not shown) is guided through the funnel 20 along a rope passage which ends at an upper end 21 of the knot forming means.
  • the knot forming means 8 comprise a rope cover 22 which is connected to a rope cover actuator 23.
  • the rope cover 22 can be moved from a position shown in Fig. 3 in which the rope passage is covered by the rope cover 22 into a position in which the rope passage is uncovered.
  • the knot forming means 8 comprise a rod 24 outside the rope cover 22 which is connected to a rod actuator 25.
  • a gap 26 is provided between the rod 24 and the rope cover 22.
  • the rod 24 can be retracted under the action of the rod actuator 25 so that a fresh rope which has been arranged on a side of the rod 24 opposite to the rope cover 22 can after a corresponding movement of the rope cover 22 reach an "old" rope running through the rod passage.
  • the knot forming means 8 is used to prepare the leading end of the new rope by guiding it around the rope cover 22 while the machine is still running and the "old" rope still runs through the rope passage. The leading end of the new rope is guided around the rope cover 22, through the gap 26 and around the rod 24 as will be explained later.
  • Fig. 4 shows two rope paths, more precisely a first rope path 27 and a second rope path 28.
  • a first shear device 29 is provided for the first rope path 27 and a second shear device 30 is provided for the second rope path 28.
  • first clamping means 31 are provided for the first rope path 27 which first clamping means 31 are connected to a first clamping means actuator 32 which can move the first clamping means 31 along the first rope path 27.
  • Second clamping means 33 are provided for the second rope path 28.
  • the second clamping means 33 are connected to a second clamping means actuator 34 which can move the second clamping means 33 in a direction parallel to the second rope path 28.
  • Fig. 5 shows the preparation of a knot forming process in more detail.
  • Rope 4 runs through the first rope path 27 and through the knot forming means 8. Rope 4 is withdrawn from the first ball 2 by means of the inlet drive 10. The rope storage 9 is filled in this stage of operation.
  • a possible way to perform the preparation is that the operator takes the leading end of the second rope 5 out of the second rope path 28, and guides it winding clockwise and downwards for one and a quarter revolutions around the rope cover 22. During this phase, the leading end should be taken twice trough the gap 26, and then looped around the rod 24 counterclockwise. A complete revolution around the rod cover 22 shall be performed, counterclockwise, and again passing through gap 26, being careful doing this passing downwards underneath the previous revolution of rope 5 itself. The excess of leading end shall be taken back into the second rope path 28 to an extent so that the clamping means 33 can clamp the leading end of the second rope 5. It is, however, not absolutely necessary the leading end is guided back into the second rope path 28.
  • All actuators 23, 25, 32, 34 are connected to common control means which are not shown.
  • the control means control the actuation of the actuators 23, 25, 32, 34 in a controlled sequence. This sequence is initiated when the control means detect that the trailing end of the first rope 4 approaches. To this end, it is possible to have end detection means, for example a sensor. This actuation can, however, be initiated by an operator.
  • Fig. 8 the next step is shown in which the rod 24 has been retracted and the loop 36 of the first rope 4 has come into engagement with the section 35 of the second rope 5.
  • a knot 38 in form of a figure of eight is created which is a very strong knot.
  • the first rope 4 pulls the second rope 5 through the knot forming means 8.
  • knot forming the knot forming means 8 and the two rope paths 27, 28 have been shifted in relation to each other, so that the knot forming means 8 which have previously been aligned with the first rope path 27 now are aligned with the second rope path 28. This can be achieved by shifting the knot forming means 8 or by shifting the rope paths 27, 28 or by shifting both the knot forming means 8 and the rope paths 27, 28.
  • This condition can be detected by means of a tension sensor (not shown) which is connected to the control means.
  • the second clamping means actuator 34 can be used to detect the sufficient tensioning of the knot 38.
  • the second clamping means actuator 34 is operated with a maximum force. When this force is not sufficient to move the second clamping means 33 over the complete stroke length, this is an indication that the tensioning force is sufficient.
  • the inlet drive 10 is stopped. It is even possible to slightly rotate the inlet drive 10 in a backward direction to lower the tension of the first rope 4 which in some cases facilitates the forming of the knot.
  • the outlet drive 11 can be used as a tension controller for the rope which is supplied to a processing machine.
  • the rope knotting arrangement 1 is shown having two rope paths 27, 28. However, it is possible to use a rope knotting arrangement having more than these two rope paths 27, 28.

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • Ropes Or Cables (AREA)
  • Basic Packing Technique (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
EP19208444.0A 2019-11-12 2019-11-12 Rope knotting arrangement Active EP3822207B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19208444.0A EP3822207B1 (en) 2019-11-12 2019-11-12 Rope knotting arrangement
ES19208444T ES2970444T3 (es) 2019-11-12 2019-11-12 Disposición de anudado de cuerdas
JP2020180297A JP7309679B2 (ja) 2019-11-12 2020-10-28 ロープ結び装置
CN202011259876.XA CN112850368B (zh) 2019-11-12 2020-11-12 绳索打结设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19208444.0A EP3822207B1 (en) 2019-11-12 2019-11-12 Rope knotting arrangement

Publications (2)

Publication Number Publication Date
EP3822207A1 EP3822207A1 (en) 2021-05-19
EP3822207B1 true EP3822207B1 (en) 2023-11-08

Family

ID=68581174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19208444.0A Active EP3822207B1 (en) 2019-11-12 2019-11-12 Rope knotting arrangement

Country Status (4)

Country Link
EP (1) EP3822207B1 (ja)
JP (1) JP7309679B2 (ja)
CN (1) CN112850368B (ja)
ES (1) ES2970444T3 (ja)

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2326132A1 (de) * 1973-05-23 1974-12-12 Jun Bruno Pfrommer Vorrichtung zur fadenfuehrung an textilmaschinen
US3892432A (en) * 1974-03-01 1975-07-01 George A Ingus Continuous yarn drawing method and apparatus
DE3264870D1 (en) * 1981-04-16 1985-08-29 Iro Ab Knitting machine for the production of a striped fabric
JPS60151393A (ja) * 1984-01-19 1985-08-09 古河電気工業株式会社 巻取り回転型撚合せ装置の段取り替え方法及び巻取り回転型撚合せ装置
DE3733796A1 (de) * 1987-10-07 1989-04-20 Sipra Patent Beteiligung Fadenwechseleinrichtung, insbesondere fuer strickmaschinen
JPH0274645A (ja) * 1988-09-12 1990-03-14 Nippon Oil Co Ltd 炭素繊維織物の製織におけるよこ糸供給方法
JPH0428671A (ja) * 1990-05-23 1992-01-31 Bando Chem Ind Ltd 伝動ベルト成形における巻付けコードの繰出し制御方法
CH687540A5 (de) * 1992-02-07 1996-12-31 Staeubli Ag Verfahren und Vorrichtung zur Bestimmung von Festigkeitseigenschaften der Kettfaeden einer Webkette.
JPH06329108A (ja) * 1993-05-19 1994-11-29 Zenjiro Nakazato ロープ締め付け装置、および、ロープの結び合わせ方法
DE10006599A1 (de) * 2000-02-15 2001-08-23 Memminger Iro Gmbh Friktionsfournisseur mit Vibrationsanregung
JP2002035461A (ja) * 2000-07-28 2002-02-05 Brother Ind Ltd 糸結び装置
US6820904B1 (en) * 2002-03-15 2004-11-23 Seth R. Goldstein Machine that ties and unties a four-in-hand necktie knot
CN2608467Y (zh) * 2003-03-13 2004-03-31 黄昌辉 一种即时绳索打结装置
EP1524341A1 (de) * 2003-10-13 2005-04-20 Benninger AG Verfahren und Vorrichtung zum Wechseln von Fäden, insbesondere am Spulengatter einer Schäranlage
US20100156101A1 (en) * 2008-12-24 2010-06-24 Glynette Baldwin Teaching device for tying knots
US10099890B2 (en) * 2015-08-02 2018-10-16 Medicines360 Devices, systems and methods for knot tying
EP3192759B1 (de) * 2016-01-15 2019-08-21 Karl Mayer Rotal Srl Knoteinrichtung und gatter
IT201800002452A1 (it) * 2018-02-06 2019-08-06 Btsr Int Spa Metodo, sistema alimentatore di filo perfezionato e dispositivo per ottimizzare l'alimentazione di filo ad una macchina tessile operante con elevata discontinuita' o con un moto alternato
CN109019190A (zh) * 2018-08-17 2018-12-18 上海宇航系统工程研究所 随机收绳装置

Also Published As

Publication number Publication date
CN112850368B (zh) 2023-09-26
JP2021075834A (ja) 2021-05-20
JP7309679B2 (ja) 2023-07-18
EP3822207A1 (en) 2021-05-19
ES2970444T3 (es) 2024-05-28
CN112850368A (zh) 2021-05-28

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