EP1739217A1 - Dispositif pour fournir à un guide fil du métier à tricoter une quantité de fil determinée et requise pour chaque periode de tricotage - Google Patents

Dispositif pour fournir à un guide fil du métier à tricoter une quantité de fil determinée et requise pour chaque periode de tricotage Download PDF

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Publication number
EP1739217A1
EP1739217A1 EP05014066A EP05014066A EP1739217A1 EP 1739217 A1 EP1739217 A1 EP 1739217A1 EP 05014066 A EP05014066 A EP 05014066A EP 05014066 A EP05014066 A EP 05014066A EP 1739217 A1 EP1739217 A1 EP 1739217A1
Authority
EP
European Patent Office
Prior art keywords
thread
winding body
yarn
winding
amount
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
EP05014066A
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German (de)
English (en)
Other versions
EP1739217B1 (fr
Inventor
Jürgen Dipl.-Ing. Mohr
Hans-Günther Haltenhof
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.)
H Stoll GmbH and Co KG
Original Assignee
H Stoll 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 H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
Priority to AT05014066T priority Critical patent/ATE524586T1/de
Priority to EP05014066A priority patent/EP1739217B1/fr
Priority to CN2006100937170A priority patent/CN1891880B/zh
Publication of EP1739217A1 publication Critical patent/EP1739217A1/fr
Application granted granted Critical
Publication of EP1739217B1 publication Critical patent/EP1739217B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • D04B15/52—Thread-feeding devices for straight-bar knitting machines

Definitions

  • the invention relates to a device for supplying the amount of yarn currently required for each phase of the knitting process to a yarn guide of a knitting machine and for receiving a yarn amount, which arranged between a yarn package and the yarn feeder Fournisseur as a means for storing a yarn amount and means for yarn delivery to the yarn guide and away from this.
  • the known device has a feeder with a winding ring through which a thread is withdrawn from a bobbin and wound onto the winding body of the feeder.
  • a fixed in the vertical direction thread eyelet is arranged on a rotatable winding arm, which unwinds the determined for the current knitting process by the machine control thread amount from the winding body.
  • the distance between the thread eye and the last thread winding on the winding body is different. This can lead to differences between the calculated and actually delivered amount of thread and therefore to thread tension changes.
  • the present invention is based on the object to improve the known device to the effect that the actually supplied amount of thread is independent of the wound on the bobbin thread amount.
  • the object is achieved with a device of the type mentioned according to the invention that the means for yarn delivery and a winding body of the feeder are arranged to be movable relative to each other in the longitudinal direction of the winding body.
  • the means for yarn delivery can be positioned according to the current winding state of the bobbin precisely positioned, d. H. always at the height of the last thread winding on the winding body.
  • the means for conveying the thread may comprise a thread eyelet, which is movable in both directions of rotation in a circular movement about the winding body, wherein at least the eyelet is arranged in the longitudinal direction of the winding body relative to this movable.
  • the thread eyelet can be simultaneously movable in the longitudinal direction of the winding body and in a circular movement about the winding body or only in the longitudinal direction of the winding body or only in a circular movement about the winding body.
  • the thread eye can be moved so that the amount of thread remains constant.
  • the speed of the circular movement and the movement in the longitudinal direction of the winding body can preferably be coordinated with one another such that closely adjacent thread windings are formed on the winding body.
  • each thread winding has the same diameter, and the storage capacity of the winding body can be optimally utilized.
  • the yarn eyelet For unwinding of thread from the winding body, the yarn eyelet can be moved in each case to the yarn winding to be unwound along the winding body, so that the thread unwinding takes place with exactly predetermined amount of thread.
  • the configuration of the wound body can also be used to keep the thread tension constant.
  • the winding body having a first region, on the thread of a winding ring of the Suppliers can be wound up, but from which no thread can be unwound from the means for conveying the thread and at which a second area adjoins, unwound from the thread by the means for thread feeding and can be wound on the thread by these means.
  • the first area guarantees that there is always a predefined number of thread windings on the winding body. If all thread were unwound from the bobbin, the yarn would extend directly from the bobbin to the means for promoting the thread and thus no metered amount of thread more can be fed to the knitting process.
  • the path of the means for conveying the thread in the longitudinal direction of the winding body can be limited from the outset.
  • a third region can adjoin the second region, on which thread can be wound up and unwound from the means for thread conveying, if the second region is completely covered with thread.
  • the third area thus acts as a buffer for the second area.
  • a device for determining the amount of thread may be provided, which is coupled to the drive of the means for thread feeding. With this device can receive relevant data for winding and unwinding of the thread from a machine control unit, processed taking into account the winding state of the bobbin and the relative position of the means for yarn delivery to the bobbin and transmitted to the drive of the means for yarn delivery to its control.
  • the device 1 for supplying the amount of yarn currently required for each phase of the knitting operation to a yarn guide 11 and for receiving a yarn amount comprises a feeder 2, which is arranged between a yarn package 10 and the yarn guide 11.
  • means 3 are provided for yarn delivery to the yarn guide 11.
  • the means for thread feeding 3 are connected to the feeder 2 by a holder 4.
  • a schematically illustrated adjusting device 40 is provided in the holder 4. With their help, the means 3 can be adjusted in the longitudinal direction of a bobbin 25 of the feeder 2.
  • the means for thread delivery 3 have a thread eye 33, which is arranged on an arm 32.
  • the arm 32 is rotatable by means of an electric motor 31.
  • the eyelet 33 can perform circular movements in both directions about the winding body 25 and thus wind up yarn on the winding body 25 and unwind from it.
  • the thread eye 33 can also move linearly along the winding body 25 in the direction of arrow U and D of the double arrow 34.
  • the feeder 2 has a winding body 25, a winding ring 22 and an electric motor 21.
  • the winding body 25 is divided in the longitudinal direction into the areas A, B and C.
  • the adjusting device 40 is adjusted so that the eyelet 33 can move only within the areas B and C.
  • the winding ring 22 is driven with an eyelet 24 in the direction of the arrow 23, whereby thread 100 is withdrawn from the thread bobbin 10 and wound from the area A on the rigid cylindrical bobbin 25.
  • These thread windings are pushed by not shown means as closely adjacent thread windings 26 over the area A on the area B on.
  • the electric motor 21 is driven so that there is always a predetermined number of thread windings 26 on the areas A and B of the winding body 25. As a result, stresses in the thread, which may have occurred during winding of the bobbin 10, be compensated.
  • the area C serves as a buffer when the area B is completely occupied with thread windings 26.
  • the adjusting device 40 may, for example, have a toothed rack 46 which is adjusted via a pinion 42 by an electric motor 41. As a result, the thread eyelet 33 of the thread-feeding means 3 can be moved along the winding body 25 in the regions B and C.
  • the adjustment device 40 also has sensors 43, 44, 45, the sensor 43 detecting the lower end of the region C, the sensor 44 detecting the lower end of the region B, and the sensor 45 detecting the upper end of the region B.
  • the thread eye 33 can be adjusted via the arm 32 by the adjusting device 40 simultaneously in the direction of the double arrow 34, while they circulate around the winding body 25 executes.
  • the speed of the linear movements along the double arrow 34 depends on the angular velocity of the thread eye 33. This ensures that the position of the thread eye 33 with respect to the winding body 25 corresponds to the position of the straight wound or wound thread windings 26 on the winding body 25 and the position of the individual thread windings 26 when unwinding or winding on the winding body 25 is precisely defined ,
  • the eyelet 33 When the eyelet 33 reaches the limit of the area A, its vertical movement is stopped. At the same time a predetermined amount of thread is withdrawn from the bobbin 10 and wound on the winding body 25 by the winding ring 22 again. If no thread is fed to the thread guide 11 during this winding of thread through the winding ring 22, the thread eye 33 does not make any circular movement and is linearly adjusted only by the adjusting device 40 in the direction D of the double arrow 34 as a function of the winding speed of the winding ring 22.
  • the thread eyelet 33 performs circular movements at the appropriate speed for unwinding of thread and is simultaneously adjusted by the adjusting device 40 in the direction of the double arrow 34 .
  • the direction of the circular movements and linear movements of the eyelet 33 depends on whether they thread on the bobbin 25 off or wound and whether the winding ring 22 windings on the bobbin 25 applies, while the eyelet 33 the yarn guide 11 feeds thread.
  • the thread eye moves In the opposite case, the thread eye moves in the direction U of the double arrow 34.
  • the winding and winding a required for the current knitting process amount of thread and rewinding a larger, previously unwound amount of thread to the bobbin 25 through the Thread loop 33 can be made at any position of the thread eye 33 to the winding body 25 within the range B. If the entire area B is already filled with thread windings 26 and already unwound thread is to be wound up again, ie the case shown in FIG. 2, the area C is available as a buffer. He can record a thread amount that corresponds to the width of the needle space of the knitting machine. During the unwinding or winding of thread in the area C, the winding of thread through the winding ring 22 is interrupted at least until no more thread windings 26 are present in the area C.
  • a control unit 6 For controlling the above-described operations, a control unit 6 is provided.
  • the control unit 6 calculates the data required for moving the adjusting device 40 by the electric motor 41. It receives from a control unit 7 via a data line D2 information about the speed and the direction of rotation of the electric motor 31 of the means for thread feeding 3 when unwinding or winding thread by means of the thread eye 33.
  • the control unit 7 receives from a machine control unit 8 for the Unwinding and winding of the thread required, calculated data via a data line D1. Subsequently, the control unit 7 controls the electric motor 31 via a control signal line D3 in accordance with this data.
  • a control unit 27 of the electric motor 21 of the feeder 2 supplies data about a data line D6 as to whether the electric motor 21 is active or not.
  • the sensors 43, 44 and 45 provide via a data line D4 information about the achievement of certain positions by the adjusting device 40 to the control unit 6. After processing these data corresponding speed and direction information is transmitted to the electric motor 41 of the adjusting device 40 via a control line D5.
  • the device 1 shown in FIGS. 1 and 2 has means for yarn delivery 3, which are movable along the fixed bobbin 25.
  • the invention can also be realized if the means for thread feeding 3 are fixed and the winding body 25 moves in the direction of its longitudinal axis.
  • Fig. 1 the path is shown, the thread 100, 100 ', 100 "travels from the bobbin 10 to its processing by the knitting needles, not shown here in the needle room NR.
  • the thread 100 has 10 different voltages due to irregularities in the winding of the bobbin. It is guided via a deflection roller U1, a thread breakage sensor 15 and a second deflection roller U2 through a hollow axis of the feeder 2 and wound on the area A of the winding body 25 by means of the winding ring 22 first, so that the different voltages of the thread 100 are compensated.
  • the thread windings 26 generated by the winding ring 22 are moved by transport means not shown here in the longitudinal direction of the winding body 25 down.
  • the winding through the winding ring 22 is continued until a predetermined number of thread windings 26 also reach the area B of the winding body 25. These thread windings 26 If necessary, they are unwound through the eyelet 33 in accordance with the knitting program.
  • the unwound through the yarn eye 33 thread passes through a guide roller U3, a hollow shaft of the means for thread feeding 3, the thread breakage sensor 15 and pulleys U4 and U5 to the yarn guide 11, which leads the yarn 100 'to the needles of the just-made knit fabric in the needle room NR.
  • the yarn guide 11 moved away in the direction of arrow X from the device 1 and is now in its farthest positions to the device 1.
  • a cutting device 12 shown schematically, the thread 11 supplied by the needles of the needle chamber NR thread is cut off and clamped in the yarn guide 11 by a device, not shown.
  • the thread guide thus separated from the thread feed to the needles in the needle space NR can now be moved to any desired location in the needle space NR and feed the needles located there.
  • Fig. 2 shows an example of the winding of a larger, previously unwound amount of thread on the winding body 25.
  • the amount of thread corresponds to the width of the needle space NR.
  • the thread guide whose thread has been cut off and clamped (Fig. 1), has been moved in the example shown in the direction of the arrow X 'to the device 1 and is now in its next possible position to this. But it could also be moved according to the desired shape, color and the like of the knitted piece to be formed to any other arbitrary position in the needle room NR.
  • the excess thread 100 "that has been displaced by this movement of the thread guide 11 onto the device 1 has been wound in precise position onto the winding body 25 by the thread eye 33 and the adjusting device 40.
  • the winding ring 22 has already wound up so many thread windings 26 on the winding body 25 that its region B is filled with yarn windings 26 up to the transition to the region C.
  • the thread eye 33 has also wound up in the region C, which serves as a buffer.
  • the thread eyelet 33 was moved with the arm 32 during winding in the direction D of the double arrow 34 and is now at the extreme end of the area C. It is now no longer wound thread through the winding ring 22 on the winding body 25 until the yarn guide 11 the needle space NR again feeds thread and thread windings 26 are also handled in the area B of the bobbin 25 through the eyelet 33.
  • the cut thread end of a schematically illustrated clamping device 13 is supplied. This has a defined distance Z to the first needle, the thread to be supplied on. The so clamped thread can be safely inserted into the hook of the first needle, the thread is to be inserted. In the example shown, this is the first needle in the needle chamber NR, which is in the next possible position to the device 1. The beginning of the renewed yarn feed through the yarn guide 11 can also take place at any other position in the needle room NR.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP05014066A 2005-06-29 2005-06-29 Dispositif pour fournir à un guide fil du métier à tricoter une quantité de fil determinée et requise pour chaque periode de tricotage Active EP1739217B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT05014066T ATE524586T1 (de) 2005-06-29 2005-06-29 Vorrichtung zur lieferung der für jede phase des strickvorgangs gerade erforderlichen fadenmenge an einen fadenführer einer strickmaschine
EP05014066A EP1739217B1 (fr) 2005-06-29 2005-06-29 Dispositif pour fournir à un guide fil du métier à tricoter une quantité de fil determinée et requise pour chaque periode de tricotage
CN2006100937170A CN1891880B (zh) 2005-06-29 2006-06-29 将针织过程各阶段精确需要的纱线量喂给导纱器的装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05014066A EP1739217B1 (fr) 2005-06-29 2005-06-29 Dispositif pour fournir à un guide fil du métier à tricoter une quantité de fil determinée et requise pour chaque periode de tricotage

Publications (2)

Publication Number Publication Date
EP1739217A1 true EP1739217A1 (fr) 2007-01-03
EP1739217B1 EP1739217B1 (fr) 2011-09-14

Family

ID=35596252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05014066A Active EP1739217B1 (fr) 2005-06-29 2005-06-29 Dispositif pour fournir à un guide fil du métier à tricoter une quantité de fil determinée et requise pour chaque periode de tricotage

Country Status (3)

Country Link
EP (1) EP1739217B1 (fr)
CN (1) CN1891880B (fr)
AT (1) ATE524586T1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2444186A1 (de) * 1974-09-16 1976-03-25 Iro Ab Fadenliefervorrichtung fuer textilmaschinen
DE2701718B1 (de) * 1977-01-17 1978-06-15 Iro Ab Fadenspeicher- und -liefervorrichtung
WO1987001399A1 (fr) * 1985-09-04 1987-03-12 Ab Iro Systeme d'alimentation en fil textile
EP1582614A1 (fr) 2004-04-03 2005-10-05 H. Stoll GmbH & Co. KG Dispositif pour l'alimentation d'une quantité en fil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2126778A1 (en) * 1971-05-28 1972-12-07 Ulrich, Anton, 8000 München Circular knitting yard feed system - for different course lengths on different systems
DE2710821C3 (de) * 1977-03-11 1981-07-23 Aktiebolaget Iro, Ulricehamn Fadenliefervorrichtung für Textilmaschinen
DE4032402A1 (de) * 1990-10-12 1992-04-16 Menninger Iro Gmbh Verfahren und einrichtung zur fadensteuerung bei maschenbildenden textilmaschinen
DE19637556C1 (de) * 1996-09-14 1998-01-08 Memminger Iro Gmbh Fadenliefervorrichtung
DE19932482A1 (de) * 1999-07-12 2001-01-18 Memminger Iro Gmbh Fadenliefergerät in mit verstellbarer Fadenleitelementeinrichtung
CN100482873C (zh) * 2003-10-16 2009-04-29 陈仁惠 定量与变量送纱装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2444186A1 (de) * 1974-09-16 1976-03-25 Iro Ab Fadenliefervorrichtung fuer textilmaschinen
DE2701718B1 (de) * 1977-01-17 1978-06-15 Iro Ab Fadenspeicher- und -liefervorrichtung
WO1987001399A1 (fr) * 1985-09-04 1987-03-12 Ab Iro Systeme d'alimentation en fil textile
EP1582614A1 (fr) 2004-04-03 2005-10-05 H. Stoll GmbH & Co. KG Dispositif pour l'alimentation d'une quantité en fil

Also Published As

Publication number Publication date
CN1891880A (zh) 2007-01-10
EP1739217B1 (fr) 2011-09-14
CN1891880B (zh) 2012-05-02
ATE524586T1 (de) 2011-09-15

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