EP3901076A1 - Procédé de dépôt du fil haute précision d'un fil lors de l'enroulement d'une bobine - Google Patents

Procédé de dépôt du fil haute précision d'un fil lors de l'enroulement d'une bobine Download PDF

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Publication number
EP3901076A1
EP3901076A1 EP21169647.1A EP21169647A EP3901076A1 EP 3901076 A1 EP3901076 A1 EP 3901076A1 EP 21169647 A EP21169647 A EP 21169647A EP 3901076 A1 EP3901076 A1 EP 3901076A1
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EP
European Patent Office
Prior art keywords
thread
coil
traversing
winding
bobbin
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Granted
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EP21169647.1A
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German (de)
English (en)
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EP3901076B1 (fr
Inventor
Markus Prof. Dr. Rüter
Uwe Dr. Baader
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Hanza GmbH
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Hanza GmbH
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Publication of EP3901076A1 publication Critical patent/EP3901076A1/fr
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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
    • 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
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2848—Arrangements for aligned winding
    • B65H54/2854—Detection or control of aligned winding or reversal
    • 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
    • B65H54/2848—Arrangements for aligned winding
    • B65H54/2854—Detection or control of aligned winding or reversal
    • B65H54/2869—Control of the rotating speed of the reel or the traversing speed for aligned winding
    • B65H54/2872—Control of the rotating speed of the reel or the traversing speed for aligned winding by detection of the incidence angle
    • 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 the thread deposit when winding bobbins, in particular when winding synthetic threads into so-called cross-wound bobbins, in which the thread wound on the bobbin regularly crosses.
  • a traversing thread guide also called traversing device
  • Z-direction axial direction of the bobbin
  • mirror formation arises as the bobbin diameter increases when one or more complete bobbin revolutions take place per double stroke of the traversing device, ie when the ratio of the speed of the bobbin to the double stroke frequency of the traversing device is 1, a multiple or a fraction.
  • a complete back and forth movement of the traversing thread guide is referred to as a double stroke.
  • the frequency with which double strokes are performed is referred to as the double stroke frequency or the traversing frequency.
  • the speed of the coil can also be referred to as the frequency of the coil or the rotational frequency of the coil.
  • the ratio of the speed of the spool to the double stroke frequency of the traversing device is generally referred to by the term “crossing ratio” or “crossing value” K.
  • the mirrors which are often referred to as image windings, lead to certain disturbances when the reel is being unwound. Furthermore, mirrors lead to vibrations in the winding machine during winding and thus to an unsteady contact between the pressure roller and the bobbin and finally also to damage the coil. Mirrors must therefore, especially with smooth threads such. B. chemical fibers are avoided.
  • the bobbin With a so-called precision winding, the bobbin is built up at a traversing speed that is directly proportional to the speed of the bobbin. This means that with a precision winding the crossover ratio is fixed and remains constant over the course of the winding cycle, while the double stroke frequency or the traversing frequency decreases proportionally to the winding speed with the package diameter as a proportionality factor. With such a precision winding, specifying the winding ratio with the K value prevents or at least largely reduces mirror formation.
  • SPW stepped precision winding or step precision winding
  • the crossing ratio is reduced in jumps by a sudden increase in the traversing speed. This means that with the step precision winding a precision winding takes place within each phase or step, in which the double stroke frequency or the traversing frequency decreases proportionally with the spindle speed. After each phase, the double stroke frequency is increased again by leaps and bounds, so that a decreasing crossover ratio results.
  • the crossing conditions that are to be maintained during the individual phases are calculated in advance and programmed.
  • Such precision windings and step precision windings are, for example, from the documents DE 198 17 111 A1 and DE 198 35 888 A1 known. Even the US 2018/0162681 A1 and that concerns step precision windings with the aim of a particularly dense packing of the thread.
  • the DE 11 2004 000 484 B4 relates to stepped precision windings with a focus on the thread guidance on the side parts of the winding body.
  • the DE 100 21 963 A1 also relates to step precision windings with a focus from the thread deposit at the thread reversal points on the outer edge of the bobbin.
  • the basic idea behind precision winding and step precision winding is that the speed of the bobbin n bobbin , or the frequency of the bobbin rotating movement (f bobbin ), is in a fixed relationship to the required transverse movement of the yarn guide.
  • the reciprocal of the time until the thread guide completes a complete movement from the left to the right edge of the bobbin and back again is referred to as the traverse frequency or double stroke frequency f changier .
  • Changes in the frequency of the bobbin f bobbin or the speed of the bobbin n bobbin are usually caused by a constancy of the thread speed v thread.
  • the thread speed is normally specified in devices for winding bobbins, for example by having an upstream machine for producing, processing or processing the thread for a constant thread speed v Thread is set up.
  • the speed n bobbin or the frequency f bobbin must decrease in order to achieve the desired constant peripheral speed and thus the desired thread speed v thread even with bobbins with a larger diameter on the bobbin surface reach.
  • the K values, which avoid mirror formation, are usually determined in the step precision winding from a K value table already described above.
  • the K-value table is preferably designed as a kind of look-up table and is set up to give back the respectively valid K-value in steps depending on the thickness of the coil D coil or the speed of the coil n coil , f coil, so that the set ratios of f bobbin to f traversing prevent critical mirror formation.
  • the core of the novel process described here is the newly introduced parameter of the winding angle ⁇ coil in step a).
  • This parameter is ultimately an angular value in the circumferential direction of the bobbin that follows the course of the thread wound on the bobbin over the entire structure of the bobbin and with which any desired coordinate of the thread on the bobbin can be described exactly.
  • This parameter ⁇ coil can be specified in different units, for example in angular degrees, where one revolution of the coil corresponds to 360 ° (angular degrees) and, for example, 3 rotations to 1080 ° (angular degrees) or in radians, where one revolution of the coil corresponds to the value 2 ⁇ ⁇ and for example 3 revolutions 6 ⁇ ⁇ .
  • the parameter ⁇ coil can, however, also be defined in such a way that one turn of the coil corresponds exactly to the increase of the parameter corresponds to the value 1, in which case half a revolution would correspond to the value 0.5, for example.
  • the coordinate does not correspond to the length of the thread at the storage position because the length of the thread per loop changes depending on the thickness of the bobbin D bobbin and depending on the K value. Rather, the coordinate describes a position of the thread that can be clearly described with the winding angle ⁇ bobbin.
  • the thickness of the bobbin and the K value can be specified for each thread coordinate that can be described with the winding angle ⁇ bobbin.
  • the winding angle ⁇ coil can be detected in the most varied of ways, for example with a counter for counting the revolutions or partial revolutions of the coil or with similar devices. For this purpose, design variants are explained in more detail below.
  • the winding angle ⁇ coil is actually determined explicitly, but it is also possible that only a precursor value is determined that can be used to calculate the winding angle ⁇ coil . This can then b in the method explained below step) for calculating the traversing thread guide-control angle ⁇ traversing be used tax. It is important that at least the precursor value corresponds to the basic idea that an absolute coordinate of the thread can be described here and not just a speed of the bobbin and / or of the thread during winding.
  • step b) a so-called traversing thread guide control angle ⁇ chan-gier, control is calculated on the basis of the winding angle ⁇ bobbin.
  • This new parameter is used to control a traversing yarn guide and this parameter also runs up during the entire winding process of the bobbin with the winding angle ⁇ bobbin .
  • the traversing thread guide control angle ⁇ traversing tax and the introduction already discussed known K values and, if appropriate, other input variables can be considered. The ways in which this can be done will be explained in more detail below.
  • any coordinate of the wound thread is on the coil writable.
  • any coordinate of the wound thread can be described exactly and it is even possible to build a kind of model of the entire bobbin with which every crossing point at which threads of different windings of the bobbin cross would be exactly predictable and describable.
  • step c) will be of the traversing thread guide-control angle ⁇ traversing used tax, an axial thread tray target position Z is to be calculated on the coil.
  • the axial thread storage target position Z and also an actual axial thread storage actual position Z act do not necessarily have to correspond 1: 1 to the position of the thread on the bobbin. Due to the winding of the The thread-acting mechanics can again lead to differences, which can be due, for example, to the fact that the thread runs after the traversing thread guide or because the thread overshoots a little when the movement of the traversing thread guide changes direction. Such effects are preferably neglected here. It is assumed that the actual axial thread deposit position Z ist is set by the traversing thread guide.
  • Step c) also includes the variant that the axial thread tray position Z will take the form of a traversing thread guide command angle ⁇ traversing is to be calculated, which is to a desired axial thread tray target position Z is defined.
  • a traversing thread guide target angle ⁇ traversing , soll is therefore a special case of Z soll .
  • Traversing thread guide target angle ⁇ traversing should be considered as Z should , for example, if traversing thread guides are designed as traversing thread guide arms pivotable about a pivot point at an angle or if traversing thread guides are designed as so-called bi-rotors, in which the Traversing movement is carried out by a rotary drive, which is converted by a gear unit into a linear traversing movement in the Z direction.
  • the nominal axial thread deposit position Z should be understood as an absolute position of the thread at the coordinate of the thread in the Z direction described with the winding angle ⁇ bobbin.
  • the axial thread tray set position Z will then reset again, and this does not run with the winding angle ⁇ coil and the traversing thread guide control angle ⁇ traversing, tax high.
  • the target axial thread deposit position Z should correspond, for example, when the traversing thread guide is driven by an eccentric which executes a rotational movement and this is converted into an axial traversing movement by an eccentric element of the eccentric to control the traversing thread guide .
  • the axial thread deposit target position Z should then be used to describe the (infinitely) continued rotational movement of the eccentric drive.
  • Such design variants can in particular be implemented with the bi-rotor already described above, in which (as mentioned above), for example, Z should be defined as ⁇ traversing, should.
  • a conversion of the (infinitely) continued or increasing parameter ⁇ traversing, control in Z should as a parameter that describes the traversing movement can be carried out, for example, with a modulo operation in which the input value ⁇ traversing, is divided by a control parameter value and a residue remains, which is to the output value Z or ⁇ traversing should or denotes an intermediate variable for calculating these values.
  • a traversing thread guide is now activated in order to carry out the thread deposition in accordance with the axial thread deposition target position Z setpoint.
  • the method is particularly advantageous if the winding angle ⁇ bobbin describes the coordinate of the thread in the circumferential direction on the bobbin, starting from a start of winding of the thread on the bobbin and continuing over all windings of the bobbin.
  • the winding angle ⁇ coil thus starts preferably with a start value (for example, "0" at the beginning of the winding process and runs this basis always remains high as an example. If the winding angle ⁇ coil is measured in radians, would the winding angle ⁇ coil to 100,000 revolutions of the Coil for winding, for example, has a value of 2 ⁇ ⁇ ⁇ 100,000.
  • traversing thread guide As already described above, different design variants of a traversing thread guide are possible. Widely used traversing thread guides are arms that are rotatably suspended in an angular range and that guide the thread, which has already been mentioned above. Another variant can be a slide which can be displaced purely linearly along the Z direction and which, if necessary, can also be driven with a linear drive. Drives for traversing yarn guides with so-called bi-rotors, which have also already been mentioned above, are also possible.
  • input variables are used which can also be used to determine the angular speed of the coil when winding ⁇ coil .
  • Such input variables are in particular measured values that can also be used to determine the angular velocity ⁇ coil , such as measured times for defined numbers of revolutions / windings of the coil or measured changes in the winding angle ⁇ coil (e.g. d ⁇ coil or ⁇ coil as possible Precursor values) etc.
  • the determination of the winding angle ⁇ coil can be understood as the integration of the angular speed of the coil when winding ⁇ coil .
  • Integration preferably takes place over the time that elapses while winding the coil.
  • the integration takes place via another parameter, for example via the counting number of windings, which can be determined with a winding counter or with a pulse counter, with which the number of revolutions of the coil and / or the number of produced windings on the coil can be counted.
  • this precursor variable is a variable that is still integrated over time or another continuous parameter (such as the winding counter n coil) must be to get to the winding angle ⁇ coil .
  • a precursor variable can be determined, for example, with a pulse counter or with an incremental encoder.
  • Such an incremental encoder is set up to measure an increment of the winding angle (a change in the winding angle) and make it available as a variable.
  • the traversing thread guide control angle ⁇ traversing, controlling in step b) takes place in the context of an integration of the determination.
  • a winding counter is used to determine the winding angle ⁇ coil in step a), which counter indicates the number of windings on the coil.
  • Such a winding counter can be implemented, for example, by a switch which is activated once for each revolution of the coil. Such a switch can be electronically connected to a counter which continuously counts up with the number of windings. It is particularly preferred if such a winding counter n bobbin combined with a recorded and integrated angular velocity ⁇ bobbin of the bobbin is used during winding during winding in order to determine the winding angle ⁇ bobbin.
  • the angular velocity ⁇ bobbin of the bobbin during winding during the winding of the bobbin is adapted as a function of the increasing thickness of the bobbin D bobbin in such a way that a constant thread speed is achieved in upstream processing steps of the thread.
  • K value is a K value of at least taken into account in the calculation of the traversing thread guide control angle ⁇ traversing, controlling ⁇ from the winding angle of coil.
  • the K value is constant at least for a time interval during the winding of the bobbin; this specifies a structure of intersection points of windings of the thread.
  • parameter b in order for a so-called precision winding to occur, it is important that such a parameter (K value) is constant at least for a time interval while the coil is being wound. Such a time interval preferably lasts over the entire period of time during which the coil is wound.
  • Each K-value leads to a certain step of the coil, in which a certain shape of the windings of the coil is achieved through the K-value.
  • the use of a plurality of K values and the step-by-step change between these K values results in a structure of the coil which is referred to as a step precision winding.
  • the so-called step precision winding has already been explained in more detail above.
  • the method described here is given a K-value table with K-values, preferably as a rule for building a coil. The method described here then ensures that this rule for building a coil during winding is complied with.
  • the selection of the correct K value for the respective stage of the winding can be made using a suitable parameter. It is regularly advantageous if the K value is selected via the (present) diameter of the coil D coil or the speed of the coil n coil .
  • An existing thread storage position Z can also be "effective" as a yarn storage position are called.
  • the present thread deposit position Z ist is preferably detected with a sensor.
  • Z which is used for the method described herein and the thread tray situation actually also deviations occur on the reel, with the traversing thread guide are conditional. Such deviations can occur, for example, because the thread follows the traversing movement and / or overshoots when the direction of the traversing movement changes.
  • the control difference ⁇ Z describes an error in the thread deposit position. With the method described, the error in the thread deposit position can actually be limited to ⁇ Z. Inaccuracies in the thread deposit are thus completely recorded and can be corrected with the controller.
  • control device for controlling a traversing thread guide of a device for winding bobbins set up to carry out the described method, having at least one first control module for calculating the traversing thread guide control angle ⁇ traversing, based on a detected winding angle ⁇ bobbin and a second control module for calculating an axial thread tray set position to Z using the traversing thread guide-control angle ⁇ traversing, tax.
  • the control device is preferably a module which can be used in a winding device in order to control the traversing thread guide.
  • the control device is preferably set up to receive K values (in particular a K value table) and to take them into account when controlling the traversing thread guide.
  • the control device preferably has an input to which the K-value table can be transmitted.
  • the control device has an input via which the "currently" K value to be used is specified for the control device.
  • the control device can have an output at which a selection parameter is provided with which the "current" K value can be selected externally from the control device by another control device or a higher-level control device.
  • control device further comprises a controller which is adapted to an existing thread tray position Z to be received, and based on the present is thread tray position Z and the thread tray target position Z to an output for the regulated control of the thread tray to produce.
  • control unit has a common timer which is used for detecting the winding angle ⁇ bobbin , with no further timer for controlling the traversing yarn guide.
  • Spools wound with the method described are characterized, in particular, by a particularly exact adherence to the desired thread deposit position Z soll with Z ist the end.
  • the accuracy of the yarn-delivery position Z is effected in particular smooth end faces of the wound coil and a uniform surface of the coil.
  • the coil when tolerance deviations between an axial thread tray actual position Z and an axial thread tray target position Z should along the thread and the winding angle ⁇ coil are equally distributed and in particular no proportionality between the winding angle ⁇ coil and such tolerance deviations occur.
  • the described method can be achieved in particular that the error in the axial thread tray actual position Z is can be fully taken into account in the form of .DELTA.Z and may be based on this error, a controlled deposition of the thread.
  • systematic errors could arise due to small deviations in the time recording and also the speed recording, which could run up during the winding process (in particular while maintaining a K value). Such errors can no longer arise.
  • a fundamental divergence of the traversing position and the angular position during winding can no longer occur if the control described here takes place with ⁇ Z ale input variable of the controller. Therefore, a relatively narrow tolerance band for errors in the axial thread deposit can be specified, which is used quite evenly over the entire winding angle ⁇ bobbin for all coordinates of the thread.
  • FIGS. 1 and 2 each show schematic sketches for thread storage with a traversing thread guide 5 when winding a bobbin 2.
  • a special feature is the so-called mirror formation, in which two thread sections of the thread are placed one on top of the other at an identical point in time.
  • the thread deposit can be described with a thread coordinate 3, which describes the deposit point of the thread in the circumferential direction 4 of the bobbin with the winding angle ⁇ bobbin starting from a winding start 6.
  • the winding start 6 can be understood as the beginning of the wound thread 1 on the bobbin 2.
  • the winding angle ⁇ coil or an incremental of the winding angle d ⁇ coil can be determined with rotation sensor 8, which is a winding counter and / or an incremental encoder and / or a combination may include.
  • the thread coordinate 3 can be described with Z, where Z (depending on how you look at it) can be determined directly on the bobbin 2 or on the traversing thread guide 5.
  • Z depending on how you look at it
  • FIGS. 1 and 2 is indicated in each case by an inclined course of the thread 1 from the traversing thread guide 5 to the bobbin 2 that the thread 1 follows the traversing movement of the traversing thread guide 5 here. This can lead to deviations, depending on whether Z is determined on the bobbin 2 or on the traversing thread guide. The closer the traversing thread guide 5 is arranged to the bobbin 2, the less this effect is.
  • the Fig. 1 shows a bobbin in which a first winding layer 15 of windings 7 is being produced using the thread 1.
  • Fig. 2 shows a situation in which a second winding layer 16 of windings 7 of the thread 1 is formed on the first winding layer 15.
  • traversing thread guide 5 is each Z is the thread tray according to Z set.
  • the Fig. 2 shows the mirror formation in a very simplified way using an example.
  • the thread 1 is deposited exactly on the winding 7 of the first winding layer 15.
  • a situation of mirror formation is thus indicated. From the in the Fig. 2 If the mirror formation is indicated, technical problems arise because threads lying directly on top of one another or next to one another tend to adhere to one another, which in turn leads to problems during unwinding, the so-called pulling off of the bobbin, and must therefore be avoided at all costs.
  • Fig. 2 is a greatly simplified schematic representation of the problem of mirror formation. In actual design variants, the thread runs obliquely in all windings 7. Points of intersection of threads of different windings occur regularly.
  • Fig. 2 The mirror formation described can be avoided by strictly adhering to K values.
  • Fig. 4 shows the winding angle ⁇ bobbin (t), which increases continuously as the bobbin is wound as a function of time.
  • the winding angle ⁇ coil (t) is shown here as a continuously increasing value, which also has a constant speed or angular speed ⁇ coil .
  • the actual situation is somewhat more complex, especially when the thickness of the coil D coil changes as a result of the formation of further windings during winding.
  • this representation is in Fig. 4 only schematically, in fact the winding angle ⁇ coil (t) will increase more and more slowly with increasing time as a result of the increase in the thickness of the coil D coil.
  • Fig. 4 also shows the thread deposit position Z (t) when winding the bobbin - also schematically as an infinitely continuous parameter that increases continuously and proportionally with the winding angle.
  • the thread deposit position is conceivable, for example, if the movement actually occurring as a back and forth movement of the traversing thread guide is unfolded to a certain extent and is viewed as an infinitely continued movement in only one direction.
  • this corresponds, for example, to variants in which the traversing movement of the traversing thread guide is generated via an eccentric which carries out a continuously continued rotary movement which is then converted into the traversing movement.
  • Fig. 5 shows a control device 10 for carrying out the method described here.
  • the control device 10 is shown with the regulating section 21 (formed by the traversing thread guide 5 and an actuator 18 for moving the traversing thread guide 5 and possibly a sensor 19 for monitoring the position of the traversing thread guide 5.
  • the control device 10 and the regulating section 21 together form a schematic device 11 for carrying out the method described here.
  • additional mechanical effects can occur when the thread is laid down, such as the thread trailing and the thread overshooting Fig. 5 have been neglected and they are of subordinate importance for the functioning of the method described here and the control device described here.
  • the control device 10 has various modules which, if necessary, can also be implemented with separate hardware, but which are preferably only in software are modeled and can optionally also be wholly or partially integrated into one another. There is a first control module 12 for determining ⁇ traversing tax and a second control module 13 for determining Z should based on ⁇ traversing tax .
  • the controller 9 generates an output signal 14 based on ⁇ Z or based on Z soll and Zist, which is used as an input signal for the actuator 18 to drive the traversing yarn guide 5. All components belonging to the control device 10 are indicated here by a dashed line.
  • the components of the control value generation 17 and of the controller 9 that are optionally integrated into the control device 10 are also shown here separated by a dash-dot line.
  • the new solution aims to increase the precision of the thread deposit and at the same time to reduce the immense effort involved in recording and setting the speeds or frequencies f bobbin and f traversing .
  • the winding process is described in detail, which in turn enables simple quality control.
  • the angular paths of the coil ⁇ coil and the traversing system Z can, for example, according to the current technical implementation with an initiator or a Incremental encoder are measured. With this measuring method, each new pulse signals that the angle has rotated further by d ⁇ coil or ⁇ ⁇ coil increment .
  • the incremental encoder can, for example, be a winding counter that counts every single revolution of the coil or partial revolutions of the coil.
  • the individual incoming pulses from the initiator or incremental encoder are then summed up in the processor by, for example, a QEP unit, which ensures that no angle information is lost and that the correct angular path ⁇ coil is always available.
  • the example operated via a controller / inverter driving the Chan Passengers can nit of the torque or speed to be influenced with regard to so that hereby Z is may be influenced and the desired thread tray position Z will be updated and maintained.
  • this module can, for example, be a proportional conversion of ⁇ traversing control to Z should (in design variants Z should be the angle ⁇ traversing should ).
  • this module may also have a conversion of the (infinite) permanently increasing traversing thread guide-control angle ⁇ traversing, controlling to perform in a limited size, for example, describes the coordinate Z in the storage area of the yarn on the spool. This conversion can be done with a modulo operation, for example.
  • Fig. 6 shows the continued rising angle ⁇ coil and the yarn-delivery position Z should ⁇ Z is a function of time t as can be controlled with the methods described herein.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Winding Filamentary Materials (AREA)
EP21169647.1A 2020-04-22 2021-04-21 Procédé de dépôt du fil haute précision d'un fil lors de l'enroulement d'une bobine Active EP3901076B1 (fr)

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DE102020110999.7A DE102020110999B4 (de) 2020-04-22 2020-04-22 Verfahren zur hochpräzisen Fadenablage eines Fadens beim Wickeln einer Spule

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EP3901076B1 EP3901076B1 (fr) 2025-08-27

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CN113857276A (zh) * 2021-10-28 2021-12-31 贵州航天南海科技有限责任公司 一种拉丝机精确调速控制系统及其方法
CN116588752A (zh) * 2023-06-19 2023-08-15 西门子工厂自动化工程有限公司 纱线卷绕方法、装置和电子设备
CN119191070B (zh) * 2024-11-28 2025-02-25 上海果纳半导体技术有限公司 天车升降装置和升降方法

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EP3901076B1 (fr) 2025-08-27
CN113526232A (zh) 2021-10-22

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