EP0401781A1 - Präzisionskreuzspule, Verfahren zu deren Herstellung und Spuleinrichtung dafür - Google Patents

Präzisionskreuzspule, Verfahren zu deren Herstellung und Spuleinrichtung dafür Download PDF

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Publication number
EP0401781A1
EP0401781A1 EP90110692A EP90110692A EP0401781A1 EP 0401781 A1 EP0401781 A1 EP 0401781A1 EP 90110692 A EP90110692 A EP 90110692A EP 90110692 A EP90110692 A EP 90110692A EP 0401781 A1 EP0401781 A1 EP 0401781A1
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EP
European Patent Office
Prior art keywords
turns
bobbin
winding
speed
coil
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.)
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Application number
EP90110692A
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German (de)
English (en)
French (fr)
Inventor
Fritjof Dr.-Ing. Maag
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Individual
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Individual
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Publication date
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Publication of EP0401781A1 publication Critical patent/EP0401781A1/de
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    • 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
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • 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
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • B65H54/381—Preventing ribbon winding in a precision winding apparatus, i.e. with a constant ratio between the rotational speed of the bobbin spindle and the rotational speed of the traversing device driving shaft
    • B65H54/383—Preventing ribbon winding in a precision winding apparatus, i.e. with a constant ratio between the rotational speed of the bobbin spindle and the rotational speed of the traversing device driving shaft in a stepped precision winding apparatus, i.e. with a constant wind ratio in each step
    • 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 invention relates to a package wound with yarn, wire, tape or the like in precision winding, with a number of turns fluctuating around a setpoint value due to the controllable connection between the drives of the coil and the traversing device, a method for winding a yarn or the like in precision winding onto a rotatingly driven one Bobbin by shifting the yarn along the jacket of this bobbin and a bobbin to carry out the process.
  • the coil rotation frequency and traversing frequency are in a predetermined, fixed ratio in the precision winding. This ratio indicates the number of spool revolutions per traversing period and is referred to as the number of turns.
  • the number of turns, traversing stroke and bobbin diameter determine the pitch angle of the thread coil on the bobbin. With precision winding, this becomes smaller with increasing coil diameter, while it remains constant with wild winding.
  • the selection of a favorable number of turns is of particular importance for precision winding. It consists of an integer part and a decimal fraction. Depending on the bobbin diameter, the pitch angle of the yarn coil is essentially determined by the integral part of the number of turns.
  • the decimal fraction of the number of turns determines the angular position of the sequence of yarn turns on the spool.
  • European patent 0 150 771 requires that these lead to an even distribution of the filament coils around the circumference of the bobbin.
  • the fluctuation in the number of reversing loops per circumferential section on one end face of the coil is used and maximum values are given for this.
  • the number of turns is set by the controllable connection of the drives of the coil and traversing device, as is the case e.g. is common for the production of coils in step precision winding, so far it has hardly been possible to achieve a good coil structure. There are two main reasons for this.
  • the traversing device is in a constant ratio V to the coil speed driven. V is proportional to the reciprocal of the number of turns.
  • European application 0 194 524 proposes modulating the setpoint value of V. Although the winding structure can be improved in this way, the good values of optimized number of turns are generally not achieved. Without modulation, however, good numbers of turns can lead to a very bad winding structure due to the proposed measure.
  • the actually set ratio V will necessarily fluctuate more or less periodically around the desired setpoint. This fluctuation, even if it is only 10 ⁇ 4 to 10 ⁇ 5 in accordance with the technical complexity of the control device, can have a very unfavorable effect on the distribution of the filament coils around the circumference of the spool. This then means that even numbers of turns which meet the conditions of EP 0 150 771 can lead to a coil structure which can no longer be accepted in this way.
  • the distribution of the filament coils around the bobbin circumference is uneven if the number of turns leads to mirror formation. This is the case if the decimal number of the number of turns can be expressed by a fraction of integer values, i.e. represents a rational number. The denominator of the fraction is called the mirror order. The lower the order of the mirrors, the more pronounced the formation of mirrors and thus the unevenness in the distribution of the filament coils around the circumference of the spool. But even very high mirror orders of 50 or even 100 can still adversely affect this distribution.
  • the influence also increases if the range of decimals of the number of turns covered by the control fluctuations becomes smaller under otherwise identical conditions.
  • the coil structure becomes worse if the mirror decimals concerned are arranged asymmetrically in the fluctuation range of the decimals of the number of turns.
  • symmetrical means that the distance between the mirror decimals and the mean value of the decimals of the number of turns is weighted in accordance with the mirror order, with lower mirror orders having greater weight.
  • the optimal definition of the axis of symmetry in this sense is very difficult. It is therefore easier and more reliable to derive the optimal position of the axis of symmetry from the distribution of the filament coils and the minimization of their fluctuation range on the circumference of the bobbin.
  • the bobbin circumference is divided into circumferential sections (classes) of the same size, the number of thread ends at the intersection of the thread coils of a laying direction with a plane perpendicular to the bobbin axis in each circumferential section is counted.
  • the fluctuation range of this distribution is the difference between the maximum and minimum number of thread ends in a circumferential section.
  • S (100) does not exceed a maximum value of 15, preferably not more than 8, the mirror decimal places in the fluctuation range of the number of turns are distributed sufficiently symmetrically and a good spool structure with very good running properties is achieved.
  • This distribution of the filament spirals can be determined by a winding test. However, it is much easier to use a computer with a simulation program for this.
  • control fluctuations e.g. achieve a result comparable to the practical test as a sinusoidal modulation of the number of turns with the control fluctuations corresponding amplitude and period.
  • a uniform coil build-up is achieved in particular if the ratio of spindle speed and traversing frequency V is controlled so that no mirror decimal places up to a maximum mirror order SPO are present in the range of the control fluctuations of the decimal number of turns.
  • mirror decimals higher than mirror order 100 can largely be neglected.
  • the selected decimal number of turns is slightly larger or smaller than the obvious mirror decimal e.g. is of the 5th order, according to e.g. 5 traverse periods of deposited filament in the direction of bobbin rotation after or before the previously deposited filament. This can affect the effectively wound coil length. It is therefore expedient to choose the number of turns for the bobbin build so that the subsequent filament coils always lie in the same sense of the coil rotation direction relative to the coil previously deposited there.
  • a range of values for regulating the traversing drive in relation to V to the bobbin speed which is also sufficient for changing bobbin diameters and pitch angles, can be used, which in the sense described is favorable decimals of the number of turns and thus a good bobbin build-up can be specified, for example, as a permanently programmed, exchangeable data storage device.
  • the first ratio to be used must be selected according to the desired lead angle and the sleeve diameter.
  • the other stu The series are switched after reaching predetermined values, eg the speed of the traversing drive.
  • a disadvantage of this known method is that the predetermined series of gear ratios, e.g. As a result of a change in the pitch angle, it is no longer possible to optimally take into account all the parameters mentioned, which influence the quality of the number of turns.
  • the largest possible range for the decimal number of turns with a sufficient distance from mirror decimal SPO-th order is sought in the vicinity of the ratio V required for the desired pitch angle.
  • the number of turns corresponding to the largest possible ratio V is checked for the distribution of the thread coils on the circumference of the bobbin in a plane perpendicular to the bobbin axis. V is then reduced by one unit in the last decade provided until S (100) and S (25) are within the specified limits. In this way, all the ratios V required for the winding travel are determined.
  • this method it is possible in a short time to set optimal values for the gear ratio V or the number of turns, even for very many stages of a stage precision winding.
  • this series can be defined individually for each winding problem and made available in a changeable, volatile memory for each winding unit if the computer is directly coupled to the winding unit.
  • the winding device for producing the cross-wound bobbins according to the invention in step precision winding and for carrying out the method is shown in FIG.
  • the winding device consists of a thread guide device (1) which is driven in an oscillating manner along the jacket of the cross-wound bobbin and a bobbin drive (2). It is irrelevant to the invention whether it consists of an oscillating thread guide or of thread guide elements rotating in opposite directions and whether it is driven by its own motor or via a controllable connection from the spool. Furthermore, it is immaterial whether the coil drive acts on the coil axis or whether it is driven on its circumference, whether with a changing or constant circumferential speed.
  • the winding device also consists of a controller (3), the output of which is coupled to the drive (4) of the thread guide device (1) and incremental encoders (5) and (6) for detecting the speeds of the cheese (7) and the drive (4 ) for the thread guide device (1).
  • the controller (3) controls the speed of the drive (4) of the thread guide device (1) so that the transmission ratio V from its speed to the speed of the package (7) one from a data memory (8) predetermined ratio.
  • the row of the gear ratios required for the winding travel is stored in the data memory (8), the next gear ratio being switched each time predetermined operating conditions are reached, for example a minimum speed of the drive (4) of the thread guide device (1).
  • the winding device is characterized in that a changeable, volatile memory is used as the data memory (8), which is provided by an integrated computer (9), which is equipped with an input unit (10) for entering the winding conditions, with the series of for the winding ratio required gear ratios is loaded.
  • This series is created by the computer (9) according to a predetermined program for determining the sequence of gear ratios optimized according to the invention from the winding conditions entered.
  • the minimum pitch angle when switching to a new gear ratio is 11.85 °
  • the thread guide stroke is 150 mm
  • the bobbin diameter at the changeover point is 84.2 mm.
  • the thread guide is driven by a reverse thread shaft with the number of turns 5 revolutions / double stroke.
  • the amplitude of the control fluctuations is 0.2 ⁇ .
  • a number of turns of 5.40516 is calculated from the pitch angle, stroke and coil diameter.
  • the optimized win The number of numbers should therefore be a diamond winding near the mirror decimal 0.4 (2/5).
  • the filament coils should lie in the rhombus in the direction of the bobbin rotation, which means that the decimal number of turns should be> 0.4.
  • Mirror- Mirror- Decimals order Decimals order 0.400000 5 0.403846 52 0.402062 97 0.404040 99 0.402174 92 0.404255 47 0.402299 87 0.404494 89 0.402439 82 0.404762 42 0.402597 77 0.405063 79 0.402778 72 0.405405 37 0.402985 67 0.403226 62 0.403509 57
  • the distance between the filament spirals following one another in the rhombus then becomes very small. This can be desirable if the aim is to have a high packing density of the coil. In the case of coils produced at high speeds, however, harmful overwashing can occur. It is then better to increase the helix spacing, similar to that of a larger RS.
  • the gradation of the number of turns for a coil in step precision winding is given below, in which the layer thickness of the individual steps is constant:
  • STEP PRECISION DEVELOPMENT The helix angle of the filaments 11.00 degrees
  • Coil peripheral speed 800 m / min Number of turns of the reverse thread shaft 5 Traverse stroke 150 mm Sleeve diameter 84 mm
  • Switching speed of the reverse thread shaft 2316 rpm
  • Maximum double stroke rate 518 DH / min Calculated Weret After Latch Number of turns n coil d coil DH n-KGW n-KGW / n coil s (100) s (25) 6.202704 3032 84.0 489 2443.7 0.8061 6 7 5.403069 2709 94.0

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Winding Filamentary Materials (AREA)
EP90110692A 1989-06-09 1990-06-06 Präzisionskreuzspule, Verfahren zu deren Herstellung und Spuleinrichtung dafür Withdrawn EP0401781A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3918846 1989-06-09
DE19893918846 DE3918846A1 (de) 1989-06-09 1989-06-09 Praezisionskreuzspule, verfahren zu deren herstellung und spuleinrichtung dafuer

Publications (1)

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EP0401781A1 true EP0401781A1 (de) 1990-12-12

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EP90110692A Withdrawn EP0401781A1 (de) 1989-06-09 1990-06-06 Präzisionskreuzspule, Verfahren zu deren Herstellung und Spuleinrichtung dafür

Country Status (2)

Country Link
EP (1) EP0401781A1 (enrdf_load_stackoverflow)
DE (1) DE3918846A1 (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486896A1 (de) * 1990-11-23 1992-05-27 NEUMAG - Neumünstersche Maschinen- und Anlagenbau GmbH Verfahren zum Aufspulen eines Fadens in gestufter Präzisionswicklung
EP0538961A1 (en) * 1991-10-25 1993-04-28 SAVIO S.p.A. Method for distributing yarn wound in a winding unit
DE4223271C1 (enrdf_load_stackoverflow) * 1992-07-17 1993-06-24 Neumag - Neumuenstersche Maschinen- Und Anlagenbau Gmbh, 2350 Neumuenster, De
WO2001028907A3 (de) * 1999-10-19 2001-11-22 Rieter Ag Maschf Verfahren und vorrichtung zum aufwickeln eines fadens auf eine spule
DE102004004926B4 (de) * 2004-01-31 2008-06-05 Festo Ag & Co. Steuerungsmodul für eine Faden-Aufwickelvorrichtung
US7762491B2 (en) * 2003-05-19 2010-07-27 Starlinger & Co Gesellschaft M.B.H. Band-winding method
DE10015933B4 (de) * 2000-03-30 2015-09-03 Saurer Germany Gmbh & Co. Kg Verfahren zum Herstellen einer Stufenpräzisionswicklung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2319282B2 (de) * 1972-04-18 1981-02-19 Allied Chemical Corp., Morristown, N.J. (V.St.A.) Verfahren zur Vermeidung von Bildwicklungen bei der Herstellung von Kreuzspulen
EP0150771A2 (de) * 1984-01-18 1985-08-07 Fritjof Dr.-Ing. Maag Präzisionsspule mit auf eine Spulenhülse aufgewickeltem Garn oder dergleichen, sowie Verfahren und Einrichtung zu deren Herstellung
EP0194524A2 (de) * 1985-03-05 1986-09-17 B a r m a g AG Aufwickelverfahren
US4771961A (en) * 1986-06-03 1988-09-20 Teijin Seiki Company Limited Yarn traverse apparatus
US4779813A (en) * 1986-09-18 1988-10-25 Teijin Seiki Company Limited Method of winding yarn on bobbin and machine therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2319282B2 (de) * 1972-04-18 1981-02-19 Allied Chemical Corp., Morristown, N.J. (V.St.A.) Verfahren zur Vermeidung von Bildwicklungen bei der Herstellung von Kreuzspulen
EP0150771A2 (de) * 1984-01-18 1985-08-07 Fritjof Dr.-Ing. Maag Präzisionsspule mit auf eine Spulenhülse aufgewickeltem Garn oder dergleichen, sowie Verfahren und Einrichtung zu deren Herstellung
EP0194524A2 (de) * 1985-03-05 1986-09-17 B a r m a g AG Aufwickelverfahren
US4771961A (en) * 1986-06-03 1988-09-20 Teijin Seiki Company Limited Yarn traverse apparatus
US4779813A (en) * 1986-09-18 1988-10-25 Teijin Seiki Company Limited Method of winding yarn on bobbin and machine therefor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486896A1 (de) * 1990-11-23 1992-05-27 NEUMAG - Neumünstersche Maschinen- und Anlagenbau GmbH Verfahren zum Aufspulen eines Fadens in gestufter Präzisionswicklung
EP0538961A1 (en) * 1991-10-25 1993-04-28 SAVIO S.p.A. Method for distributing yarn wound in a winding unit
DE4223271C1 (enrdf_load_stackoverflow) * 1992-07-17 1993-06-24 Neumag - Neumuenstersche Maschinen- Und Anlagenbau Gmbh, 2350 Neumuenster, De
EP0578966A1 (de) * 1992-07-17 1994-01-19 NEUMAG - Neumünstersche Maschinen- und Anlagenbau GmbH Verfahren zum Aufspulen eines Fadens in gestufter Präzisionswicklung
US5447277A (en) * 1992-07-17 1995-09-05 Neumag-Neumuensterische Maschinen Und Anlagenbau Gmbh Method of winding yarn on a bobbin or the like in a stepwise high precision winding process
WO2001028907A3 (de) * 1999-10-19 2001-11-22 Rieter Ag Maschf Verfahren und vorrichtung zum aufwickeln eines fadens auf eine spule
DE10015933B4 (de) * 2000-03-30 2015-09-03 Saurer Germany Gmbh & Co. Kg Verfahren zum Herstellen einer Stufenpräzisionswicklung
US7762491B2 (en) * 2003-05-19 2010-07-27 Starlinger & Co Gesellschaft M.B.H. Band-winding method
DE102004004926B4 (de) * 2004-01-31 2008-06-05 Festo Ag & Co. Steuerungsmodul für eine Faden-Aufwickelvorrichtung

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DE3918846C2 (enrdf_load_stackoverflow) 1991-03-21
DE3918846A1 (de) 1990-12-13

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