EP0256383B1 - Méthode pour embobiner des fils - Google Patents

Méthode pour embobiner des fils Download PDF

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Publication number
EP0256383B1
EP0256383B1 EP87111025A EP87111025A EP0256383B1 EP 0256383 B1 EP0256383 B1 EP 0256383B1 EP 87111025 A EP87111025 A EP 87111025A EP 87111025 A EP87111025 A EP 87111025A EP 0256383 B1 EP0256383 B1 EP 0256383B1
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EP
European Patent Office
Prior art keywords
speed
winding
package
process according
layer thickness
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.)
Expired - Lifetime
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EP87111025A
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German (de)
English (en)
Other versions
EP0256383A1 (fr
Inventor
Heinz Dr. Schippers
Siegmar Gerhartz
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Oerlikon Barmag AG
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Barmag AG
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Priority claimed from DE3627081A external-priority patent/DE3627081C2/de
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Publication of EP0256383A1 publication Critical patent/EP0256383A1/fr
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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
    • 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
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2806—Traversing devices driven by cam
    • B65H54/2809—Traversing devices driven by cam rotating grooved cam
    • B65H54/2812—Traversing devices driven by cam rotating grooved cam with a traversing guide running in the groove
    • 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
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2836—Traversing devices; Package-shaping arrangements with a rotating guide for traversing the yarn
    • B65H54/2839—Traversing devices; Package-shaping arrangements with a rotating guide for traversing the yarn counter rotating guides, e.g. wings
    • 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
    • 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
    • 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
    • B65H54/385—Preventing edge raising, e.g. creeping arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H55/00—Wound packages of filamentary material
    • B65H55/04—Wound packages of filamentary material characterised by method of winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
    • B65H59/385—Regulating winding speed
    • 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 method for winding threads, in particular freshly spun and / or drawn chemical threads, into cylindrical cross-wound bobbins with straight end edges.
  • Cross-wound bobbins made of a synthetic thread which have been produced at a constant traversing speed or at least within a constant traversing speed, usually have bulges and bulges both on their circumference and on their end faces.
  • the bulges on the end faces not only affect the appearance of the package, but also the quality.
  • the quality is affected by the fact that so-called "cutters" are created in the areas of the bulges. These are pieces of thread that slide out of the package of the package onto the end face and span one or more thread turns secantially. Such strikers lead to malfunctions when the thread is withdrawn from the spool, in particular is to be withdrawn at high speeds.
  • the object of the invention is to produce a spool with good running properties.
  • the coil produced should in particular have no taps. Strippers are pieces of thread that leave their thread layer at the front edges and span the thread layers lying further inward.
  • the coil produced should also be stable, i.e. it should have an ideally cylindrical shape and show no constrictions or bulges on the leading edges.
  • the thread layers of a good spool must be stable even when the winding layer becomes thicker. This means that the pieces of thread deposited in the reversal areas of the bobbin must not tend to slip in the direction of the center of the bobbin in any winding layer and also not when pulled off. This would also give rise to the danger that the slipping thread pieces would lie over thread layers lying further outside and clamp these thread layers lying further outside when pulling them off.
  • the maximum traversing speed is already reached with a layer thickness that is less than 10% of the total layer thickness of the coil.
  • the maximum traversing speed is then preferably maintained in any case over 80% of the total layer thickness, preferably even during the entire winding cycle.
  • a base layer of the coil deposited on the sleeve is deposited with a traversing speed which rises steadily from a lowest value to an uppermost value.
  • the layer thickness of this base layer is a fraction - maximum 10% - of the total layer thickness of the coil.
  • the layer thickness of the entire coil is referred to as the layer thickness of the coil with the coil diameter that can be achieved in practice. It is neglected that incompletely wound coils may also be produced. Even with such incompletely wound coils, the thickness of the base layer is determined as a function of the possible total diameter of the coil.
  • the layer thickness is the difference between the radius of the coil and the radius of the sleeve on which the coil is wound.
  • the layer thickness of the base layer, in which the coil is wound with increasing traversing speed is between 10 and 30 mm, preferably between 15 and 25 mm.
  • the traversing speed during winding of the base layer is only changed in such a way that a change in the filing angle of the thread on the bobbin results from 3 to 7 ° , preferably from 4 to 6 ° . It has been found that this change is sufficient to achieve the object of this invention.
  • the tendency to take off was reduced in particular by selecting the initial traversing speed to be very low in such a way that the depositing angle of the thread on the sleeve is not more than 6 ° .
  • the deposit angle at the highest traversing speed is not more than 10 ° , preferably less than 9 °.
  • the lower value of the traversing speed is 2 to 6 ° , preferably between 3 and 5 °
  • the uppermost value of the traversing speed is between 6 and 10 ° , preferably between 7 and 9 ° . This particularly prevents the deposited thread from sliding towards the center of the bobbin.
  • a spool that also differs from conventional spools in terms of appearance in that the end faces are free of strikers and exactly straight, i.e. lie in a normal plane to the coil axis (plane perpendicular to the coil axis).
  • the base layer is suitable for securely supporting the rest of the coil and counteracting deformations.
  • the theoretical cone angle alpha of the base layer is between 65 and 80 ° . This is achieved primarily by gradually increasing the traversing speed - starting from the smallest deposit angle - during the winding of the base layer until the largest deposit angle is reached is, the difference between the smallest deposit angle and the largest deposit angle - as I said - is at least 3 ° .
  • the placement angles are defined in accordance with DIN 61 800 (angle between thread and tangent).
  • the coil is really conical, i.e. has sloping front edges.
  • the cone angle of the base layer is purely theoretical and only means that changing the traversing speed also results in a change in the traversing stroke with a factor of 15% to 45% of the layer thickness.
  • This factor is referred to as slope factor B below.
  • the slope factor B is the reciprocal of the tangent of the theoretical slope angle.
  • B one-sided stroke reduction / layer thickness.
  • the layer thickness at which the maximum traversing speed must be reached and also the slope factor depend on the diameter of the sleeve on which the thread is formed.
  • the thread tension at which the thread is wound is also taken into account.
  • the layer thickness of the base layer and the slope factor are determined by experiment. The higher the winding tension, the lower the layer thickness and the greater the slope factor.
  • any type of winding in which the traversing frequency is not constantly changed with the speed of the spindle in the course of the winding travel is referred to as wild winding or wild cross winding.
  • the traversing frequency is constant.
  • those types of winding in which the traversing frequency is changed without a fixed relationship to the speed of the spindle are also referred to as wild winding.
  • step precision winding Another type of winding that has all the advantages of wild winding, but which does not result in mirror windings, is the step precision winding.
  • the traversing speed continuously between a predetermined upper limit and a predetermined lower limit in a recurring sequence of cycles (steps) in each step of the precision winding initially proportional to the spindle speed and then again to achieve a predetermined smaller winding ratio is increased.
  • the ratio of spindle speed / double stroke rate is referred to as the winding ratio.
  • the double stroke number is the traversing frequency and denotes the number of movements of the thread back and forth over the length of the spool in the course of a unit of time.
  • the upper and lower limits of the traversing speed will have their minimum value at the start of the winding cycle and will be increased continuously or in stages depending on the diameter until a base layer is wound according to this invention.
  • the upper limit of the traversing speed is preferably changed between F x sin 5 ° and F x sin 9 ° and the lower limit between F x sin 4 ° and F x sin 8 ° , where F is the thread speed.
  • the distance between the upper limit and the lower limit is chosen so that even during the individual stages of the stage precision winding there are only slight changes in the traversing speed, which the thread can easily bear.
  • FIG. 1 shows the cross section
  • FIG. 2 shows the view of a first winding machine (partially schematically)
  • FIG. 4 shows the cross section of a further winding machine on which the invention can be carried out.
  • FIGS. 1 and 2 on the one hand and FIG. 4 on the other hand:
  • the thread 3 running continuously in the direction of 2 is first guided through the stationary thread guide 1 and then through the traverse 4.
  • the winding spindle 5 is freely rotatable.
  • An empty tube 10 is slipped onto the winding spindle 5.
  • the thread 3, which starts at a constant speed, e.g. freshly spun and / or drawn man-made fibers are wound up on the empty tube 10 to form a cheese 6.
  • the empty tube 10 and then the coil 6 that is formed are driven at their circumference by a drive roller 21 (not visible in FIG. 2) at a constant circumferential speed.
  • the thread 3 is moved back and forth along the cross-wound bobbin by the traversing 4, which is described below.
  • the traversing mechanism 4 and the drive roller 21 are mounted together on a carriage 22 which can be moved up and down (arrow), so that the drive roller 21 can avoid the growing coil diameter of the coil 6.
  • the traversing device 4 is driven by an asynchronous motor 14.
  • the drive roller 21 is driven by the synchronous motor 20 at a substantially constant peripheral speed. This will be discussed later.
  • the three-phase motors 14 and 20 receive their energy from frequency converters 15 and 16.
  • the synchronous motor 20, which serves as a coil drive, is connected to the frequency converter 16, which supplies the adjustable frequency f2.
  • the asynchronous motor 14 is operated by frequency converter 15, which is connected to a computer 23.
  • the output signal 24 of the computer 23 depends on the input.
  • the input is made by the program unit 19, in which the following can be programmed: on the one hand, the course of the traversing speed, i.e. the control frequency f3 entered via the winding cycle.
  • the mean value of the traversing speed and additionally the frequency as well as the amplitude and shape of the periodic deviation from the predetermined mean value are entered.
  • the desired course of the peripheral speed of the coil is programmed. This is based on the fact that with increasing traversing speed an increase in the thread tension with which the thread is wound on the bobbin occurs. It can now happen that this thread tension affects the thread quality and / or the quality of the package. To avoid such an impairment, the invention provides that the peripheral speed of the coil is adapted to the change in the traversing speed. This change in the peripheral speed of the bobbin can also be entered into the program unit 19 and used via the output signal 25 of the computer to control the frequency converter 16 in such a way that the speed of the drive roller 21 is reduced when the thread tension detected by the thread tension meter 26 increases.
  • the thread tension can be measured and the output signal can be used to control the frequency converter 16.
  • the thread tension meter 26 is indicated in FIG. 1.
  • the output signal of this thread tension meter 26 is applied to the frequency converter 16 via a converter and amplifier 27 in such a way that the speed of the drive roller 21 is reduced when the thread tension detected by the thread tension meter 26 is increased.
  • Fig. 1/2 The thread 3 runs from the traversing 4 with a drag length L1 onto the roller 11, loops around it and runs tangentially onto the spool with a drag length L2.
  • the drag lengths L1 and L2 have the effect that the deposit length H of the thread on the bobbin or sleeve (see FIG. 8) is shortened by increasing the traversing speed and according to this invention when the base layer is wound from HB to H (FIG. 8).
  • the traversing 4 consists of a wing traversing and a roller 11 arranged downstream of it in the thread run.
  • the traversing has its own drive, described later.
  • Wing traversing and roller 11 are connected by gears (not shown).
  • the roller can be operatively connected to the drive roller 21.
  • the particular advantage of the traversing shown is that the deposit angle of the thread on the spool can be changed - within limits - since the traversing speed can be set independently of the winding speed.
  • the wing traversing has the rotor 12 and the rotor 13. Both rotors can be mounted concentrically or eccentrically to one another. Both rotors are driven in opposite directions by a drive and transmission described later in the transmission housing 20.
  • the rotor 12 carries two or three or four driver arms 8 which rotate in the plane of rotation I (arrow 18).
  • the rotor 13 carries the same number of driver arms 7, which be close in the Rotate neighboring rotation level II (arrow 17).
  • the driver arms guide the thread along the guide ruler 9. Each driver arm 8 transports the thread - in FIG. 2 - to the right and transfers it there at the guide end to a driver arm 7, which transports the thread in the opposite direction to the other guide end, where in turn one of the driver arms 8 takes over the return.
  • FIG. 3 shows the programmed course of the mean value of the traversing speed over the winding travel.
  • the ordinate shows the ratio of the traversing speed to the constant peripheral speed of the coil (C / U).
  • the abscissa shows the build-up of the coil radius or the build-up layer thickness S of the coil, shown for a coil that is formed on a sleeve with a diameter of 100 mm. The traversing speed increases steadily from the lowest value at the beginning of the winding cycle to the highest value.
  • the maximum traversing speed is reached after winding the base layer with the layer thickness SB.
  • the minimum traversing speed is specified so that there is a deposit angle of approx. 5 ° on the sleeve.
  • the maximum traversing speed leads to a placement angle that is at least 3 ° larger, here 9 ° .
  • the traversing speed is increased steadily and linearly with the increasing layer thickness from the minimum to the maximum value. This maximum traversing speed then remains constant until the end of the winding cycle, or in any case constant, until at least 80% of the total layer thickness of the coil is built up.
  • FIG. 3 also contains a diagram of the circumferential speed U of the coil, the circumferential speed being given as a percentage of the initial value of the circumferential speed. From the diagram it can be seen that the initial value of the peripheral speed is reduced by approximately 1% in the course of the winding of the base layer, so that inadmissible changes in the thread tension are compensated for and, ideally, the winding speed remains constant.
  • the traversing 4 first has the traversing thread guide 33 in the thread run, which is caused to reciprocate by the reversing thread shaft 32 transversely to the running direction of the thread.
  • the traversing device includes the grooved roller 35, in the endless, back and forth groove of which the thread is guided with partial looping.
  • the distance between the running line on which the thread runs from the grooving roller 4 and the running line on which the thread runs onto the spool 7 is referred to as the drag length L.
  • Their size determines the increase in the depositing length H of the thread on the bobbin, which is associated with a reduction in the traversing speed (FIG. 8).
  • the current traversing speed or double stroke number is also advantageously sensed by the sensor 37 and input to the computer, which in turn carries out a target / actual value comparison and thereby the traversing speed of the traversing devices driven by asynchronous motor 14 to the target value, i.e. regulates the setpoint proportional to the spindle speed via the stored winding ratios.
  • the main task of the computer 23 is to carry out this setpoint determination of the traversing speed. Details are described in European patent application 86103045.
  • the computer receives the pre-calculated ideal winding conditions through the program memory 19.
  • the computer calculates "ideal" spindle speeds from these ideal winding ratios and the initial value of the traversing speed.
  • the values of the "ideal" spindle speeds are compared with the current spindle speeds determined by the sensor 38. If the computer determines the identity of the spindle speeds, it outputs the output value 24 of the traversing speed, which is also predetermined by the programmer 19, as the setpoint to the frequency converter 13. In the following course of the winding cycle, the computer reduces this setpoint proportionally to the constantly measured spindle speed, which decreases hyperbolically with increasing bobbin diameter at constant bobbin peripheral speed.
  • the predetermined "ideal” winding ratio thus remains constant during this stage of the precision winding.
  • the computer ascertains the identity of the currently measured spindle speed with the "ideal" spindle speed determined by the next winding ratio specified as "ideal”
  • the output value of the traversing speed is again specified as the setpoint as output signal 20.
  • a new level of precision winding follows.
  • the traversing speed always remains between a predetermined upper limit value and a predetermined lower limit value.
  • the traversing law is now additionally programmed according to the diagram in FIG. 5.
  • the coil layer thickness S is plotted on the abscissa, starting from the tube diameter of 100 mm.
  • the ratio of the traversing speed to the peripheral speed of the coil is plotted on the ordinate, it being assumed that the peripheral speed of the coil in the we is substantially constant.
  • the ordinate shows the tangent of the storage angle, which also results from the above-mentioned DIN regulation.
  • Upper limit OGC and lower limit UGC of the traversing speed or the quotient plotted on the ordinate are set relatively low at the beginning of the winding travel, that is to say with the tube diameter 100, so that there is an average crossing angle of approximately 5 ° .
  • the upper limit and lower limit are then continuously increased to values which correspond to an average offset angle at least 3 ° larger.
  • the upper limit OGC and the lower limit UGC of the traversing speed or the quotient of traversing speed and peripheral speed remain constant.
  • the upper limit value and the lower limit value of the traversing speed are basically parallel.
  • a program is entered in the computer 23 according to FIG. 4, by means of which the traversing speed is controlled between the upper limit value and the lower limit value as indicated in FIG. 5 via the winding travel.
  • the traversing speed initially drops hyperbolic and proportional to the spindle speed and is then suddenly increased to the upper limit. This process is followed in a large number of cycles over the entire winding cycle.
  • the course of the circumferential speed of the coil can also be programmed in the program memory 19.
  • the peripheral speed of the coil is adapted to the change in the limit values of the traversing speed.
  • FIG. 5 shows a diagram of the circumferential speed V u of the coil, the circumferential speed being given as a percentage of the initial value of the circumferential speed. From the diagram it can be seen that the initial value of the peripheral speed is reduced by approximately 1% in the course of the winding of the base layer, so that inadmissible changes in the thread tension are compensated for and, ideally, the winding speed remains constant.
  • the thickness SB of the base layer and the theoretical angle of repose of the base layer are also dependent on the sleeve diameter.
  • FIG. 7 shows the dependency between the sleeve diameter and the thickness of the base layer to be produced, during the winding of which the traversing speed (FIGS. 1, 2, 3) or upper limit and lower limit (FIGS. 4, 5) are increased.
  • the sleeve diameter is plotted on the ordinate
  • the base layer thickness SB is plotted on the abscissa. It follows that the base layer thickness is inversely proportional to the sleeve diameter. It has been found that a good, stable and rack-free coil construction can be achieved if the above dependency is observed.
  • Factor A is the thread tension with which the thread is wound. Within this framework, A can be determined by experiment. The higher the winding tension, the lower the factor A.
  • the tipping tendency could be reduced in particular by choosing the mean values or limit values of the initial traversing speed to be very low in such a way that the deposit angle of the thread on the sleeve is not more than 5 ° .
  • the deposit angle at the highest traversing speed is not more than 1 00.
  • Fig. 6 shows the relationship between the theoretical slope angle alpha of the base layer and the sleeve diameter.
  • a steeper end edge must theoretically be wound with a smaller sleeve; the theoretical angle alpha is therefore larger than when the base layer is wound on a sleeve with a large diameter.
  • the difference between the maximum traversing speed and the minimum traversing speed or between the largest and the smallest depositing angle is used to control the slope angle.
  • This invention provides that in order to achieve straight front edges, the difference between the largest and the smallest placement angle should be at least 3 ° .
  • Fig. 8 shows the theoretical view of a cheese 6 according to this invention, which is formed on the sleeve 10 with the radius r and the diameter d and has the total layer thickness S.
  • the cheese is cylindrical and has practically essentially straight end edges which lie in a normal plane.
  • the coil theoretically has oblique front edges with a theoretical angle of repose alpha.
  • the intersecting thread turns on the outermost layers of the bobbin are indicated with the deposit angle that each piece of thread has with respect to the tangent to the bobbin lying in a normal plane to the bobbin.
  • the base layer serves as a side support for the coil. This support prevents the end edges of the spool from bulging out laterally and causing strikers.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Winding Filamentary Materials (AREA)

Claims (10)

1. Procédé d'enroulement de fils, notamment de fils synthétiques fraîchement filés et étirés, pour former des bobinages cylindriques croisés ayant des bords frontaux rectilignes, dans lequel on modifie la valeur moyenne de la vitesse de va-et-vient pendant la formation du bobinage, caractérisé par le fait que la valeur moyenne est à son minimum au début de la formation du bobinage puis est augmentée en fonction du diamètre, de façon continue ou par échelons, de telle manière que la valeur maximale est atteinte lors de la constitution d'une couche de base prédéterminée ayant une épaisseur (SB) n'excédant pas 10% de l'épaisseur de couche totale de la bobine.
2. Procédé selon revendication 1, caractérisé par le fait qu'après que l'épaisseur de couche prédéterminée est atteinte, la valeur maximale est conservée dans une plage de diamètre d'au moins 80% du diamètre total, de préférence jusqu'à la fin de la formation du bobinage.
3. Procédé selon revendication 1, caractérisé par le fait qu'après que l'épaisseur de couche prédéterminée est atteinte, la valeur maximale est réduite au plus 20%, de préférence de moins de 10%, au cours de la suite de la formation du bobinage.
4. Procédé selon l'une des revendications 1 à 3, caractérisé par le fait que l'accroissement de la vitesse de va-et-vient s'effectue pendant qu'une couche de fil ayant une épaisseur de 10 à 30 mm, de préférence 15 à 25 mm, se forme sur le tube de bobine.
5. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la vitesse de va-et-vient est modifiée de manière telle que le facteur d'inclinaison soit de 15% à 45%, lors de l'enroulement de la couche de base, ce facteur d'inclinaison étant le rapport de la diminution de course à l'endroit d'un bord frontal à l'épaisseur de la couche de base.
6. Procédé selon l'une des revendications 1 à 5, caractérisé par le fait que la vitesse d'oscillation est modifiée de façon telle qu'entre la valeur moyenne la plus faible et la valeur moyenne la plus grande de la vitesse de va-et-vient, l'angle de dépôt du fil sur la bobine varie de 3 à 7°, de préférence de 4 à 6°, la valeur moyenne la plus petite de la vitesse de va-et-vient donnant un angle de dépôt entre 2 et 5°, de préférence entre 4 et 6°, et la valeur moyenne la plus grande de la vitesse de va-et-vient donnant un angle de dépôt entre 6 et 10°, de préférence entre 7 et 9°.
7. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la vitesse circonférentielle de la bobine, au cours de l'enroulement de la couche de base, est réduite en fonction de l'augmentation de la vitesse de va-et-vient, de manière que la vitesse d'enroulement du fil, en tant que somme géométrique de la vitesse circonférentielle et de la vitesse de va-et-vient, reste sensiblement constante.
8. Procédé selon revendication 7, caractérisé par le fait que la vitesse circonférentielle de la bobine est réduite selon un programme mémorisé.
9. Procédé selon l'une des revendications précédentes, caractérisé par le fait que le bobinage croisé est réalisé sous la forme d'un enroulement de précision à échelons, la vitesse de va-et-vient étant réduite proportionnellement à la vitesse de broche, dans un grand nombre de cycles/échelons, entre une limite supérieure prédéterminée et une limite inférieure prédéterminée dans chaque échelon de l'enroulement de précision, puis étant réaugmen- tée pour atteindre un rapport de bobinage (nombre de tours de broche/nombre de courses doubles) prédéterminé plus faible, la limite supérieure ayant chacune sa valeur minimale au début de la formation du bobinage, et étant augmentées, de manière continue ou par échelons, en fonction du diamètre, de manière que la limite supérieure et la limite inférieure atteignent chacune sa valeur maximale lors de la formation d'une couche de base prédéterminée dont l'épaisseur (SB) n'exéde pas 10% de l'épaisseur de couche totale de la bobine, et par le fait que la limite supérieure et la limite inférieure évoluent alors parallèlement à la valeur moyenne de la vitesse de va-et-vient.
10. Procédé selon revendication 9, caractérisé par le fait que la limite supérieur de la vitesse de va-et-vient est modifiée entre
F x sin (5°) et F x sin (9°),
et la limite inférieure est modifiée parallèlement à cela, entre
F x sin (4°) et F x sin (8°),
F étant la vitesse du fil.
EP87111025A 1986-08-09 1987-07-30 Méthode pour embobiner des fils Expired - Lifetime EP0256383B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3627082 1986-08-09
DE3627081 1986-08-09
DE3627082 1986-08-09
DE3627081A DE3627081C2 (de) 1986-08-09 1986-08-09 Verfahren zum Aufwickeln von Fäden

Publications (2)

Publication Number Publication Date
EP0256383A1 EP0256383A1 (fr) 1988-02-24
EP0256383B1 true EP0256383B1 (fr) 1990-01-31

Family

ID=25846433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111025A Expired - Lifetime EP0256383B1 (fr) 1986-08-09 1987-07-30 Méthode pour embobiner des fils

Country Status (5)

Country Link
US (1) US4789112A (fr)
EP (1) EP0256383B1 (fr)
KR (1) KR900006650B1 (fr)
CN (1) CN1011686B (fr)
DE (1) DE3761556D1 (fr)

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US4917319A (en) * 1988-07-06 1990-04-17 Barmag Ag Method of winding yarn packages
DE58907348D1 (de) * 1988-12-22 1994-05-05 Barmag Barmer Maschf Aufspulmaschine.
EP0483617B1 (fr) * 1990-10-30 1995-06-14 Schärer Schweiter Mettler AG Procédé de production d'une bobine de fil
US5348238A (en) * 1991-07-30 1994-09-20 Murata Kikai Kabushiki Kaisha Doubler winder
CH691474A5 (de) * 1992-11-13 2001-07-31 Rieter Ag Maschf Verfahren und Vorrichtung zum Aufspulen eines Fadens.
DE4337891A1 (de) * 1993-11-05 1995-05-11 Zinser Textilmaschinen Gmbh Verfahren und Vorrichtung zum Aufspulen von Fäden
DE19619706A1 (de) * 1995-05-29 1996-12-05 Barmag Barmer Maschf Verfahren zur Erzielung einer Spiegelstörung
US5725167A (en) * 1995-12-19 1998-03-10 Ppg Industries, Inc. Process for winding fiber strand on a bobbin
KR19990072105A (ko) * 1996-10-12 1999-09-27 이.파우. 뢰르허 스풀링장치
WO1998016457A1 (fr) * 1996-10-12 1998-04-23 Barmag Ag Machine de bobinage pour fil arrivant en continu
DE19845325A1 (de) * 1997-10-10 1999-04-15 Barmag Barmer Maschf Aufspulmaschine
EP0992445A1 (fr) * 1998-10-05 2000-04-12 Schärer Schweiter Mettler AG Dispositif de guidage de fil
US6568623B1 (en) * 2000-03-21 2003-05-27 Owens-Corning Fiberglas Technology, Inc. Method for controlling wind angle and waywind during strand package buildup
DE10342266B4 (de) * 2002-09-25 2016-02-04 Saurer Germany Gmbh & Co. Kg Verfahren zum Herstellen einer Kreuzspule

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Also Published As

Publication number Publication date
US4789112A (en) 1988-12-06
DE3761556D1 (de) 1990-03-08
CN87105449A (zh) 1988-08-31
CN1011686B (zh) 1991-02-20
KR880002734A (ko) 1988-05-11
KR900006650B1 (ko) 1990-09-15
EP0256383A1 (fr) 1988-02-24

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