EP0150771B1 - Paquet de fil enroulé par bobinage de précision, procédé et dispositif pour sa réalisation - Google Patents

Paquet de fil enroulé par bobinage de précision, procédé et dispositif pour sa réalisation Download PDF

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Publication number
EP0150771B1
EP0150771B1 EP85100439A EP85100439A EP0150771B1 EP 0150771 B1 EP0150771 B1 EP 0150771B1 EP 85100439 A EP85100439 A EP 85100439A EP 85100439 A EP85100439 A EP 85100439A EP 0150771 B1 EP0150771 B1 EP 0150771B1
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EP
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Prior art keywords
spool
turns
filament
winding
circumference
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German (de)
English (en)
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EP0150771A2 (fr
EP0150771B2 (fr
EP0150771A3 (en
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Fritjof Dr.-Ing. Maag
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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
    • B65H54/06—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making cross-wound packages
    • B65H54/08—Precision winding 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
    • 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
    • B65H2551/00—Means for control to be used by operator; User interfaces
    • B65H2551/20—Display means; Information output means
    • B65H2551/21—Monitors; Displays
    • 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 precision bobbin with a yarn, wire, ribbon or the like thread wound on a bobbin tube in precision winding, as well as a method for winding a yarn, wire, ribbon or the like thread on a bobbin tube which can be driven at a constant bobbin circumferential speed, by means of a along the jacket of the Spool sleeve changeable, driven thread guide in precision winding, and a device for carrying out the method, the thread guide being driven by a rotating shaft or the like coupled to a motor, with a further motor for driving the spool on its circumference, with a regulator, the Output is coupled to the motor for the shaft, as well as with incremental encoders, which record the speed of the shaft and the coil, as well as with a computer unit, which with the outputs of the incremental encoders and a constant memory for determining a gear ratio between the speeds and the shaft and the coil are connected and coupled to the controller.
  • the precision winding is distinguished from the wild winding in that the ratio of the speed of the bobbin and the traversing speed of the thread remains constant when winding the thread.
  • the number of double strokes of the thread guide per unit of time is usually used as a measure of the traversing speed of the thread.
  • a double stroke is a back and forth movement of the thread guide along the jacket of the bobbin tube.
  • the ratio of the bobbin speed to the number of double strokes per minute is referred to as the number of turns and represents the number of bobbin revolutions during a back and forth movement of the thread guide.
  • Spool is understood here to mean a bobbin tube wound with thread.
  • a coil structure If the number of turns is only constant over a sub-area of the coil structure and changes in steps from sub-area to sub-area, such a coil structure is referred to as a stepped precision winding.
  • An image winding is called the position of the thread in which the reversing loop on the end face of the bobbin lies at an angle above the reversing loop of one of the preceding thread layers.
  • the image winding is located above the immediately preceding thread layer, which leads to instabilities in the bobbin structure and loop formation when the bobbin is unwound.
  • rational decimal numbers are used as the number of turns, so that a large number of intermediate layers of the thread are present between the image winding and the previous thread layer which coincides with it angularly.
  • the number of turns is therefore made up of an integer part and a decimal fraction, which is referred to as decimal number of turns.
  • the decimal angle determines the position and the distribution of the reverse loops of the thread layers on one end of the bobbin.
  • Precision winding bobbins are usually produced on winding machines in which the rotating bobbin tube and the thread guide are connected to one another by a mechanical gear.
  • the gear ratio of the gearbox can be varied in fine stages in order to be able to set the most favorable number of turns.
  • German published patent application 32 10 244 describes a method for disturbing the mirror when winding a thread in a wild winding, in which a change in the traversing speed takes place when the speed of the bobbin tube approaches a multiple of the traversing speed that is at risk of mirror damage.
  • a safety distance between the spindle speed and the mirror-prone multiple of the traversing speed is specified.
  • the safety distance and the change in the traversing speed are in a predetermined relationship to one another.
  • the safety distance and this ratio are selected such that multiples of the traversing speed which are at risk of mirroring are jumped through in as short a time as possible by changing the traversing speed.
  • DE-AS 19 13 451 an electronic control circuit is described, which allows a control of the drive of a drive device for the thread guide in accordance with the rotation of the bobbin. This allows a large number of desired number of turns to be set, so that the number of turns can also be changed frequently during the coil travel. A change in the number of turns during the bobbin travel can result from the fact that the winding speed of the thread on the bobbin should be kept as constant as possible.
  • a method suitable for this purpose and associated device has been described in European patent application with publication number 55 849.
  • the number of turns used in the build-up of the bobbin influences the distribution of the reverse loops of the individual thread layers on the circumference of the bobbin and thus the mass distribution of the thread. In this way, coils with an uneven structure are easily obtained, which is disadvantageous not only when winding up but also when unwinding.
  • a good coil structure may require a. an even distribution of the thread mass in the bobbin. Otherwise, density differences occur which not only adversely affect the visual appearance of the finished wound bobbin, but also lead to difficulties during winding due to imbalance and out-of-round running of the bobbin tube and, particularly when driving the bobbin, interfere with its circumference due to friction. Above all, however, such fluctuations in density also adversely affect the running properties of the bobbin when the wound thread is pulled off.
  • the invention is therefore based on the object of providing a precision bobbin with optimum properties with regard to the bobbin structure, in particular the mass distribution of the thread on the bobbin, and with regard to the bobbin run; Furthermore, a method for winding the coil at a constant peripheral speed and a device for winding are to be specified.
  • the above-mentioned precision coil is characterized according to the invention in that the fluctuation in the number of reversing loops per section of the circumference on a coil end face between two successive image windings is less than 8, preferably less than 4, if the circumference is divided into at most 100 sections.
  • the thread distribution during the build-up of the bobbin is evened out in such a way that even with step precision winding, regardless of the type of thread, error-free winding and even unwinding of the bobbin is ensured without thread breaks or loop formation.
  • the above-mentioned precision coil can also be characterized according to the invention in that the fluctuation in the number of reversing loops per section of the circumference on a coil end face between two successive image windings is less than 4, preferably less than 2, if the circumference is divided into at most 10 sections .
  • a precision bobbin is particularly advantageous if the crossing angle of two thread layers lying one above the other fluctuates by at most 10%.
  • a precision coil with a particularly good property results if each of the number of turns used in the gradual precision winding consists of an integral part and a decimal fraction, and the decimal fractions are taken from a store of stored decimal fractions and are repeated over the entire coil structure.
  • the mass distribution of the yarn becomes particularly uniform if, between a first reversing loop and a second reversing loop, none of the sections, with reference to the distribution of the reversing loops in the first reversing loop over the circumference of the bobbin end face, is repeatedly occupied with reversing loops, between the first and the second reversal loop are a predetermined number, for example 50, successive reversal loops.
  • a procedure for winding a yarn, wire, ribbon or the like thread of the type mentioned is characterized according to the invention in that the ratio of the rotational speed of the bobbin tube to the number of double strokes of the thread guide is set so that the fluctuation in the number of reversing loops per section of the The circumference on a coil end face between two successive image windings remains less than 8, preferably less than 4, with the hundredth part of the circumference being selected as the section.
  • the method according to the invention is designed in such a way that the ratio of the speed of the bobbin tube to the number of double strokes of the thread guide (number of turns) is set in such a way that the flanking of the number of reversing loops per section of the circumference on a spool end face between two successive image windings is kept smaller than 4, preferably smaller than 2, the tenth part of the circumference being selected as the section.
  • decimal ud determines the position of the respective reversing loop in parts of the coil circumference, based on a coil with a constant radius.
  • the span S represents a measure of the uniformity of the distribution of the z reverse loops on the k classes and thus also of the mass distribution of the thread in the bobbin. For the number z, it is advisable to choose a sufficiently large number of double strokes between two successive image windings.
  • the span S may not at any time be more than 8, preferably more than 4, or if 10 classes of the same size are selected, the span S of none Time may be more than 4, preferably more than 2, in order to obtain the desired uniformity of the thread distribution in the bobbin.
  • limit values for the span S that are permissible for a good coil structure depends on the material to be wound, ie. H. the properties of the thread. For normal material to be wound, compliance with the upper limit values specified above is sufficient; for sensitive material to be wound, it is recommended that the lower of the above. Observe limit values for the span S.
  • the crossing angle of two layers of thread on top of the bobbin is determined and that the number of turns is set such that the crossing angle is kept between a predetermined minimum and a predetermined maximum crossing angle. It is advisable to choose the difference between minimum and maximum crossing angles to a maximum of 10%. Depending on the type of material to be wound, it may be advisable to choose a difference of no more than 5%. Since the crossing angle changes with increasing diameter of the coil, the number of turns must be determined several times over the entire coil trip in order to implement the invention in this embodiment.
  • the number of double strokes is changed in an angle-synchronous manner to the rotation of the bobbin tube, which can be achieved, for example, by angularly synchronous control of the transmission ratio of the bobbin rotation and the drive device of the thread guide.
  • the gear ratio or the number of turns should be kept very precisely in the mean. A deviation is only permissible in the fifth or better still in the sixth digit of the decimal.
  • the integration time for forming this mean is of minor importance. It can be several seconds if the deviations from the mean are statistically distributed.
  • the number of pulses per revolution of the bobbin or the drive device for the thread guide should therefore be chosen so high that the maximum possible deviation in the current number of turns dependent on it is so small that the resulting error in the position of two successive reversing loops is smaller than the smallest distance between these two reversing loops determined by the number of turns.
  • the time required to change the number of double strokes depends on the size of this change, the mass that has to be accelerated and the available driving force. Adequate security against the direct superimposition of successive thread layers is achieved in a further development of the invention if the transition from a first number of turns to a second number of turns is carried out during less than ten double strokes of the thread guide.
  • a device of the type mentioned at the outset is characterized according to the invention by a switching device which is controlled by predetermined parameters and which triggers the determination of a gear ratio by the computer unit, and by a comparison device which compares a number of turns determined by the computer unit with numbers of turns stored in the constant memory and the Controller is loaded with a gear ratio that corresponds to the next largest of the stored number of turns from the constant memory.
  • a receiving device which senses the coil structure and which controls the switching device as a function of predefined parameters. It also proves to be advantageous if the computer unit detects the deviation of the mean value of the gear ratio of the oscillation frequency from the traverse frequency to the coil rotation frequency set by the controller over an indication time of several seconds from the calculated target value and the controller compensates for this. Furthermore, a multiplier device, which supplies signals corresponding to the multiples of a number of turns, to a sorting device can be provided, which compares the received signals with predetermined barrier signals and forwards them to memory areas which are assigned to the barrier signals, an evaluation device comprising the constant memory and being connected to the memory areas being provided is.
  • the evaluation device can expediently have a display device which displays the number of occupancies of the individual memory areas.
  • the device is particularly expediently further developed in that a further comparison device is provided which compares the difference in the number of occupancies of the memory areas with a predetermined further barrier signal and, if the barrier corresponding to the further barrier signal is undershot, the decimals of the number of turns entered in the multiplier in stores the constant memory.
  • the transmission ratio which represents the ratio of the speed of the shaft to the speed of the bobbin, differs from the reciprocal of the number of turns only by the factor which indicates how many double strokes (number of threads) the thread guide performs per one revolution of the shaft driving it.
  • the computer unit determines the setpoint nc of the shaft from the speed ns of the coil measured by the incremental encoder, the transmission ratio, the number of double strokes g and the number of turns W and feeds this to the controller.
  • the control function for the speed nc is
  • the computer unit is provided with the decimal Wd of the number of turns stored in the constant memory, which the computer unit compares with a number of turns W1 at the time of switching to a new number of turns, which the computer unit uses according to predetermined functions that correspond to the current spool speed and the maximum permissible crossing angle. has determined.
  • the computing unit uses the new number of turns from the constant memory which is the next largest number of turns with respect to the determined number of turns W1.
  • the user enters the constant K1 in the input unit.
  • the value for it takes z.
  • B. a nomogram or a table with the parameters ko and f and the fixed values of the winding device h and g.
  • the computer determines the peripheral speed of the drive roller vu from the measured speed of the drive roller and its diameter.
  • the winding ratio W1 is determined by the computer from the following relationship: It is then follows
  • the decimals of the number of turns calculated in this way are replaced by the next higher of the pre-calculated and programmed inexpensive decimals Wd, thus forming the optimized number of turns W.
  • the value for K2 is read from a table by the user and entered into the input unit.
  • the peripheral speed vu is calculated from the speed of the drive roller and its diameter determined by the system and the coil speed ns is also continuously determined by the system.
  • the favorable decimals Wd are determined as described. About 20 values, which should be evenly distributed over the circumference of the spool, are sufficient to keep the error in the winding speed smaller than 0.05%. At least three decimal places are required for input Wd. in order to be able to determine a sufficient number of favorable decimals Wd.
  • the bobbin build-up is particularly favorable for the inner layers when winding with a diamond spool.
  • a decimal between 0.18 and 0.42 and between 0.58 and 0.82 is available for diamond winding with a reasonable distribution of the reversal points Available.
  • intermediate values are necessary, particularly with the larger spool diameters, in order to be able to run through the program.
  • the thread 1 which can be a filament yarn, is fed to a thread guide 2, which is guided in the groove of a reverse thread shaft 3.
  • the reverse thread shaft 3 is set in rotation about its axis by a motor 7 via a gear. Since the thread guide 2 is prevented from rotating with the reversing thread shaft and the groove is cut into the shaft in the direction inclined to the shaft axis, the thread guide is moved back and forth along its axis parallel to the jacket of the bobbin tube when the reversing thread shaft 3 rotates.
  • a coil sleeve 4 is rotatably mounted on a bearing mandrel so that the axis of the coil sleeve 4 extends parallel to the axis of the reverse thread shaft.
  • a drive roller 5 bears against the jacket of the bobbin tube 4 and is driven by a motor 6 at the desired speed.
  • the drive roller 5 With increasing winding of the thread on the bobbin tube 4, the drive roller 5 lies against the circumference of the bobbin 15 and drives the bobbin at the desired bobbin speed due to the frictional engagement between the beater roller and the bobbin at a constant peripheral speed.
  • the bobbin tube can be driven directly by a motor, the speed of which is reduced in accordance with the diameter increase of the bobbin during the winding cycle.
  • An incremental encoder 8 is provided on the reversing thread shaft 3 for detecting the speed of the reversing thread shaft 3, the output pulses of which correspond to the speed nc of the reversing thread shaft 3.
  • an incremental encoder 9 is provided on the coil 15, the output pulses of which correspond to the speed ns of the coil.
  • Another incremental encoder 10 on the drive roller 5 detects its speed and emits a number of pulses corresponding to this.
  • the control of the winding device comprises a storage and input unit 11, in which a sequence of decimals Wd of the number of turns is stored, which enable the winding structure according to the invention. Furthermore, the constants K1 u. K2 and the transmission ratio between the rotational frequency of the reversing thread shaft 3 and the traversing frequency g of the thread guide 2 and the diameter of the drive roller 5 are stored.
  • a computer unit 12 has access to the constant memory in the unit 11 via a line 16.
  • the computer unit 12 takes over line 17 u. 18 the output pulses of the incremental encoder 10 u. 9 on. From the speed of the drive roller 5 and the constant K1, the computer unit determines the speed ncs of the reversing thread shaft 3 for switching the number of turns.
  • the optimal number of turns W which was determined by the computing unit 12, is transferred via line 21 to a controller 13, which is equipped with a synchronizing device, receives the current speed nc of the reversing thread shaft 3 via line 19 and takes into account the speed ns of the coil 15, which it receives via a branch line of the supply line 18, controls the speed nc of the drive motor 7 of the reversing thread shaft 3 in an angle-synchronized manner to the coil speed ns in accordance with the signal received from the computer unit 12 via line 21.
  • the control takes place via a frequency converter 14 connected downstream of the controller 13 and which is connected to the motor 7 via line 25.
  • the control circuit which comprises the input unit 11, the computer unit 12 and the controller 13, is shown in detail in FIG.
  • a number 74 of windings can be input one after the other via a line 74 of a multiplier 22, if necessary.
  • the multiplier 22 successively multiplies each number of turns by the sequence of natural numbers and passes the results obtained via line 80 to a sorting device 24.
  • the sorting device 24 compares each of the number signals obtained from the multiplier 22, which correspond to the positions u of the reversing loop, with barrier signals, which are held ready in a unit 26 via line 76 by input 20. Two barrier signals each determine the size of a class k, thus a section on the standardized circumference on one end of the coil 15.
  • the sorting device 24 stores the signals and via line 82 in the associated memory area of a memory 28, the one has the number of storage areas corresponding to the number of classes k, of which the storage areas 30, 32, 34, 36, 38 are given by way of example in FIG. 2.
  • An output line 84 from the memory 28 leads to a display device 40, and a branch line 86 from the line 84 leads to a first comparison device 42.
  • the display device 40 shows the occupancy numbers of the individual memory areas on a display, not shown, that is to say the number contained in each memory area Payment signals. at.
  • the comparison device 42 forms the difference between the occupancy numbers of the individual memory areas of the memory 28 and compares the difference with another barrier signal.
  • the the Comparison device 42 receives via line 41 from the barrier signal device 26.
  • the barrier signal can represent the number 8, for example. If the comparison of the differences by the comparison device 42 with the further barrier signal reveals that the differences remain below the further barrier signal, the comparison device 42 acts on line 90 to a gate 44 in a line 78 which leads from the multiplier 22 to a constant memory 46. As a result of the loading, the gate 44 is opened and the number of turns contained in the multiplier 22 is stored in the constant memory 46. At the same time, the stored number of turns can be visually perceived via line 43 on the display of the display device 40.
  • the comparison device 42 After the comparison has been completed by the comparison device 42, the comparison device 42 sends a signal to the multiplier 22 via line 88, which then processes a new number of turns in the manner just explained.
  • Constants required for further processing such as constants K1, K2, can be entered and stored in the constant memory 46 by the input device 20 via line 72.
  • a recording device 50 can contain a video camera with which the crossing angle of the thread layers lying on the bobbin can be detected.
  • the receiving device 50 can be connected to the incremental encoder 9 and signal that a predetermined coil speed has been reached.
  • the receiving device 50 can also be connected to the incremental encoder 8 and detect the reaching of a predetermined minimum speed of the reversing thread shaft 3.
  • a further possibility of the receiving device 50 is a sensor which detects the current coil diameter, the receiving device 50 signaling that a predetermined coil diameter has been reached.
  • the receiving device 50 in any case outputs a trigger signal via line 96 to a switching device 52, which triggers the computer unit 12 accordingly.
  • the computer unit 12 determines the number of turns W1 for the maximum permitted crossing angle from the constant K2 read out from the constant memory 46 via line 92 and the coil speed ns brought up via line 18, the associated signal of which also comes from Constant memory 46 is accessed via line 92.
  • the decimals of W1 are forwarded by the computer unit 12 via line 102 to a second comparison device 58, which calls up the decimals of the number of turns stored there from line 94 and compares them with the number of turns W1 obtained from the computer unit 12.
  • the controller 13 regulates the speed nc of the motor 7 or of the reversing thread shaft 3 using the signal representing the speed of the coil from the incremental encoder 9 via line 100, in accordance with the transmission ratio i obtained from the second comparison device 58.
  • the winding process is then continued with the new number of turns W or the associated ratio i until the receiving device 50 signals that a further limit value has been reached, for example in the form of the minimum crossing angle of the switching device 52.
  • the computer unit determines a new number of turns W2 in the same way as just explained.
  • the incremental encoder 8 u. 9 emit 500 pulses, for example, per revolution of the reversing thread shaft 3 or the coil 15.
  • the possible error in the position of two adjacent reversing loops is thus less than 0.001.
  • Example 1 was carried out for comparison with a winding device of conventional type, while Examples 2-4 were carried out by the method according to the invention. In example 4, less preferred decimals are used in the number of turns marked with * .
  • the circumference of the coil is driven at a constant speed on a test device for the production of cylindrical cross-wound bobbins in stepwise precision winding.
  • the bobbin speed is recorded digitally and then the speed of the reverse thread shaft is regulated so that the transmission ratio i between the reverse thread shaft and the bobbin remains constant during the entire winding cycle.
  • i can be set with a digital potentiometer to within 4 decades.
  • the associated number of turns was determined from the series of the optimal gradation of the gear ratios i selected for a step precision winding. Coils corresponding to Example 1 were produced and evaluated with different decimals of these numbers of turns. The distribution of the reversing loops was also recorded for these numbers of turns and evaluated in accordance with Example 1. The following values were obtained:

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Winding Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (20)

1. Bobine de précision garnie d'un fil textile, d'un fil métallique, d'un ruban ou d'un fil similaire enroulé avec précision sur une douille de bobine (4), caractérisée en ce que la variation du nombre de boucles d'inversion par segment de circonférence sur une face frontale de bobine entre deux zones parallèles successives est inférieure à 8, de préférence inférieure à 4, lorsque la circonférence est divisée en 100 segments maximum.
2. Bobine de précision garnie d'un fil textile, d'un fil métallique, d'un ruban ou d'un fil similaire enroulé avec précision sur une douille de bobine (4), caractérisée en ce que la variation du nombre de boucles d'inversion par segment de circonférence sur une face frontale de bobine entre deux zones parallèles successives est inférieure à 4, de préférence inférieure à 2, lorsque la circonférence est divisée en 10 segments maximum.
3. Bobine de précision conforme à l'une quelconque des revendications précédentes, caractérisée en ce que l'angle de croisement entre deux rangées de fil superposées varie au maximum de 10%.
4. Bobine de précision conforme à l'une quelconque des revendications précédentes, caractérisée en ce que chacun des coefficients d'enroulement utilisés lors d'un enroulement de précision étagé est constitué d'une partie entière et d'une fraction décimale, et en ce que les fractions décimales sont prélevées sur une réserve de fractions décimales enregistrées et se répètent tout au long du bobinage.
5. Bobine de précision conforme à l'une quelconque des revendications précédentes, caractérisée en ce qu'entre une première boucle d'inversion et une seconde boucle d'inversion, aucun des segments n'est occupé plusieurs fois par des boucles d'inversion, par rapport à la répartition. obtenue pour la première boucle d'inversion, des boucles d'inversion sur la circonférence de la surface frontale de la bobine, un nombre prédéterminé de boucles d'inversion successives, par exemple 50, se trouvant entre les première et seconde boucles d'inversion.
6. Procédé permettant d'enrouler avec précision un fil textile, un fil métallique, un ruban ou un fil similaire (1) sur une douille de bobine, pouvant être entraînée à une vitesse circonférentielle de bobine constante, au moyen d'un guide-fil (2) entraîné et défilant le long de la surface latérale de la bobine, pour obtenir des bobines (15) conformes à l'une quelconque des revendications précédentes, caractérisé en ce que le rapport entre la vitesse de rotation de la douille de bobine (4) et le nombre de doubles courses du guide-fil (coefficient d'enroulement) est prévu de façon que la variation du nombre de boucles d'inversion par segment de circonférence sur une surface frontale de bobine entre deux zones parallèles successives reste inférieure à 8, de préférence inférieure à 4, lorsqu'un segment correspond à un centième de la circonférence.
7. Procédé permettant d'enrouler avec précision un fil textile, un fil métallique, un ruban ou un fil similaire (1) sur une douille de bobine, pouvant être entraînée à une vitesse circonférentielle de bobine constante, au moyen d'un guide-fil (2) entraîné et défilant le long de la surface latérale de la bobine, pour obtenir des bobines (15) conformes à l'une quelconque des revendications précédentes, caractérisé en ce que le rapport entre la vitesse de rotation de la douille de bobine (4) et le nombre de doubles courses du guide-fil (coefficient d'enroulement) est prévu de façon que la variation du nombre de boucles d'inversion par segment de circonférence sur une surface frontale de bobine entre deux zones parallèles successives soit maintenue inférieure à 4, de préférence inférieure à 2, lorsqu'un segment correspond à un dixième de la circonférence.
8. Procédé conforme à la revendication 6 ou 7, caractérisé en ce que l'angle de croisement entre deux rangées de fil superposées est défini, et en ce que le coefficient d'enroulement est établi de manière que l'angle de croisement soit maintenu entre des valeurs minimum et maximum prédéfinies.
9. Procédé conforme à la revendication 8, caractérisé en ce que la différence choisie entre l'angle de croisement minimum et maximum est au maximum de 10%.
10. Procédé conforme à l'une quelconque des revendications 6 à 9, comprenant un dispositif d'entraînement (3, 7) destiné au guide-fil (2), caractérisé en ce que, lors de l'établissement d'un coefficient d'enroulement, le dispositif d'entraînement est commandé pour modifier le nombre de doubles courses.
11. Procédé conforme à la revendication 10, caractérisé en ce que le nombre de doubles courses est modifié en synchronisme angulaire avec la rotation de la douille de bobine.
12. Procédé conforme à l'une quelconque des revendications 8 à 11, permettant de réaliser un enroulement de précision, caractérisé en ce que le passage d'un premier coefficient d'enroulement à un second coefficient d'enroulement est effectué en moins de dix doubles courses du guide-fil (2).
13. Procédé conforme à l'une quelconque des revendications 6 à 12, caractérisé en ce que le coefficient d'enroulement est établie de manière qu'entre une première et une seconde boucle d'inversion, aucun des segments n'est occupé plusieurs fois par des boucles d'inversion, par rapport à la répartition, obtenue pour la première boucle d'inversion, des boucles d'inversion sur la circonférence de la surface frontale de la bobine, un nombre prédéterminé de boucles d'inversion successives, par exemple 50, se trouvant entre les première et seconde boucles d'inversion.
14. Procédé conforme à l'une quelconque des revendications 6 à 13, caractérisé en ce que, pendant un temps d'intégration de plusieurs secondes, la valeur moyenne du coefficient d'enroulement est respectée avec précision, de manière qu'une déviation par rapport à la valeur moyenne prédéfinie ne se produise au plus tôt qu'au niveau du 5e, de préférence, du 6e chiffre des décimales.
15. Dispositif permettant d'enrouler avec précision un fil textile, un fil métallique, un ruban ou un fil similaire (1) sur une douille de bobine, pouvant être entraînée à une vitesse circonférentielle de bobine constante, au moyen d'un guide-fil (2) entraîné et défilant le long de la surface latérale de la douille de bobine, le guide-fil étant entraîné par un arbre rotatif (arbre à filetage inversé 3) ou analogue relié à un moteur, comprenant un autre moteur pour entraîner la bobine (15) sur sa circonférence, un régulateur (13) dont la sortie est reliée au moteur (7) destiné à l'arbre (3), des transducteurs incrémentiels (8, 9) qui captent la vitesse de rotation de l'arbre (3) et de la bobine (15), et une unité de calcul (12) qui est reliée aux sorties (98, 108) des transducteurs incrémentiels (8, 9) et d'une mémoire constante (46) pour déterminer un rapport de démultiplication entre les vitesses de rotation de l'arbre et de la bobine (15), et qui est reliée au régulateur (13), destiné à réaliser la bobine conforme à l'une quelconque des revendications 1 à 5 et à mettre en oeuvre le procédé conforme à l'une quelconque des revendications 6 à 14, caractérisé en ce qu'il comprend un système de déclenchement (52), qui est commandé avec des paramètres prédéterminés et qui permet à l'unité de calcul (12) de déterminer un rapport de démultiplication, et un système de comparaison (58), qui compare un coefficient d'enroulement déterminé par l'unité de calcul (12) avec des coefficients d'enroulement enregistrés dans la mémoire constante et impose au régulateur (13) un rapport de démultiplication correspondant au coefficient d'enroulement immédiatement supérieur parmi ceux enregistrés dans la mémoire constante (46).
16. Dispositif conforme à la revendication 15. caractérisé en ce qu'il comprend un système de détection (50) qui palpe la bobine en cours de réalisation (vitesse de rotation de l'arbre, angle de croisement des rangées de fil, ou valeurs similaires) et qui commande le système de déclenchement (52) en fonction de paramètres prédéterminés.
17. Dispositif conforme à la revendication 15 ou 16. caractérisé en ce que l'unité de calcul (12) détermine l'écart entre, d'une part, la valeur moyenne, adoptée par le régulateur (13), du rapport de démultiplication existant entre la fréquence de défilement et la fréquence de rotation de la bobine pendant un temps d'indication de plusieurs secondes et, d'autre part, sa valeur de consigne calculée, et en ce que le régulateur (13) compense c'et écart.
18. Dispositif conforme à l'une quelconque des revendications 15 à 17, caractérisé en ce qu'il comprend un système multiplicateur (22) qui envoie des signaux correspondant aux multiples d'un coefficient d'enroulement à un système de tri (24), lequel compare les signaux reçus avec des signaux limites prédéfinis et les transmet à des zones de mémoire (30 à 38) affectées aux signaux limites, et un système d'analyse (40, 42) relié aux zones de mémoire et comprenant la mémoire constante (46).
19. Dispositif conforme à la revendication 18, caractérisé en ce que le système d'analyse comporte un système d'affichage (40) qui indique le nombre des occupations des différentes zones de mémoire (30 à 38).
20. Dispositif conforme à la revendication 18 ou 19, caractérisé en ce qu'il comprend un autre système de comparaison (42) qui compare la différence de nombre d'occupations des zones de mémoire avec un autre signal limite prédéfini et qui, en cas de dépassement par défaut de la limite correspondant à l'autre signal limite, enregistre dans la mémoire constante (46) la décimale du coefficient d'enroulement entré dans le système multiplicateur.
EP85100439A 1984-01-18 1985-01-17 Paquet de fil enroulé par bobinage de précision, procédé et dispositif pour sa réalisation Expired - Lifetime EP0150771B2 (fr)

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DE19843401530 DE3401530A1 (de) 1984-01-18 1984-01-18 Praezisionsspule, sowie verfahren und vorrichtung zu deren herstellung
DE3401530 1984-01-18

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EP0150771A2 EP0150771A2 (fr) 1985-08-07
EP0150771A3 EP0150771A3 (en) 1985-08-21
EP0150771B1 true EP0150771B1 (fr) 1987-05-06
EP0150771B2 EP0150771B2 (fr) 1990-10-10

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US (1) US4676441A (fr)
EP (1) EP0150771B2 (fr)
JP (1) JPS60218262A (fr)
DE (2) DE3401530A1 (fr)

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DE3627879C2 (de) * 1986-08-16 1995-09-28 Barmag Barmer Maschf Verfahren zum Aufwickeln von Fäden
DE3769053D1 (de) * 1986-09-18 1991-05-08 Teijin Seiki Co Ltd Verfahren zum aufwickeln von garn auf spulen mit zugehoeriger maschine.
DE3703869C2 (de) * 1987-02-07 1996-12-12 Schlafhorst & Co W Verfahren zum Überwachen und/oder Steuern des Spulvorgangs und Spulstelle zum Ausführen des Verfahrens
US5156347A (en) * 1988-03-30 1992-10-20 Gay Ii Francis V Automatic continuous fiber winder
IT1227912B (it) * 1988-12-23 1991-05-14 Savio Spa Procedimento ed apparecchio per pilotare la distribuzione del filo sull'impacco in formazione in un gruppo di raccolta per fili sintetici
DE3918846A1 (de) * 1989-06-09 1990-12-13 Maag Fritjof Praezisionskreuzspule, verfahren zu deren herstellung und spuleinrichtung dafuer
IT1251866B (it) * 1991-09-24 1995-05-26 Fadis Spa Metodo per il controllo della posizione del punto di inversione del filato particolarmente per macchine roccatrici e relativa apparecchiatura
IT1251429B (it) * 1991-10-25 1995-05-09 Savio Spa Procedimento di distribuzione di filo in un gruppo bobinatore
DE4208393A1 (de) * 1992-03-16 1993-09-23 Sahm Georg Fa Verfahren zum aufspulen kontinuierlich mit vorzugsweise konstanter geschwindigkeit einer spuleinrichtung zugefuehrtem, fadenfoermigem spulgut in gestufter praezisionskreuzwicklung sowie spuleinrichtung zur durchfuehrung des verfahrens
DE4208395A1 (de) * 1992-03-16 1993-09-23 Sahm Georg Fa Verfahren zum aufspulen von einer spuleinrichtung zugefuehrtem, band- oder fadenfoermigem spulgut in kreuzspulung mit praezisionswicklung
CH691474A5 (de) * 1992-11-13 2001-07-31 Rieter Ag Maschf Verfahren und Vorrichtung zum Aufspulen eines Fadens.
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JP2004500295A (ja) * 1999-10-19 2004-01-08 マシーネンファブリク　リーター　アクチェンゲゼルシャフト 糸をボビンに巻き取るための方法及び装置
US6568623B1 (en) * 2000-03-21 2003-05-27 Owens-Corning Fiberglas Technology, Inc. Method for controlling wind angle and waywind during strand package buildup
CN116135760B (zh) * 2023-04-14 2023-06-23 广东包庄科技有限公司 一种收卷优化方法、装置、电子设备及存储介质

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Also Published As

Publication number Publication date
DE3560159D1 (en) 1987-06-11
DE3401530A1 (de) 1985-07-25
EP0150771A2 (fr) 1985-08-07
US4676441A (en) 1987-06-30
JPS60218262A (ja) 1985-10-31
EP0150771B2 (fr) 1990-10-10
EP0150771A3 (en) 1985-08-21

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