EP0235557B1 - Méthode pour pelotonner un fil pour former une bobine croisée - Google Patents

Méthode pour pelotonner un fil pour former une bobine croisée Download PDF

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Publication number
EP0235557B1
EP0235557B1 EP87101028A EP87101028A EP0235557B1 EP 0235557 B1 EP0235557 B1 EP 0235557B1 EP 87101028 A EP87101028 A EP 87101028A EP 87101028 A EP87101028 A EP 87101028A EP 0235557 B1 EP0235557 B1 EP 0235557B1
Authority
EP
European Patent Office
Prior art keywords
breathing
stroke
traversing
thread
bobbin
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
Application number
EP87101028A
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German (de)
English (en)
Other versions
EP0235557A3 (en
EP0235557A2 (fr
Inventor
Friedhelm Dipl.-Ing. Lenz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19863602853 external-priority patent/DE3602853A1/de
Priority claimed from DE19863608816 external-priority patent/DE3608816A1/de
Priority claimed from DE19863616362 external-priority patent/DE3616362A1/de
Application filed by Barmag AG filed Critical Barmag AG
Publication of EP0235557A2 publication Critical patent/EP0235557A2/fr
Publication of EP0235557A3 publication Critical patent/EP0235557A3/de
Application granted granted Critical
Publication of EP0235557B1 publication Critical patent/EP0235557B1/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
    • B65H54/38—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
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/12—Actuating means linear hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/13—Actuating means linear magnetic, e.g. induction motors
    • 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. Production of a cylindrical cheese in a wild winding from a thread, in particular from a textured, in particular false-twisted, textured thread.
  • the end faces of such cylindrical cross-wound bobbins can lie in a normal plane (winding with straight end faces) or can be erased relative to this normal plane (biconical winding).
  • a cross-wound bobbin is referred to as a bobbin in a wild winding, the winding ratio of which is constant or variable in the course of the winding travel.
  • “Spool ratio” refers to the ratio of the spool speed NS (revolutions of the spool per minute) to the traversing speed DH (number of double strokes per minute).
  • Coils of the type defined at the outset are described in DIN 61 800. They are manufactured on cross winding devices of texturing machines. Because of their treatment, in particular false twist texturing treatment, the threads have curl-elastic properties there.
  • the current technical development is aimed at larger spools and at increasing the running speed in the further processing machines.
  • the tensile force with which the thread has been wound onto the bobbin is a special criterion for good running properties. It depends in particular on the uniformity of this tensile force over the thread length and over the length of the bobbin.
  • breathing and mirror disturbance take place synchronously in such a way that changes in the traversing speed caused by changes in the thread guide stroke are compensated for by the changes for the purpose of mirror disturbance.
  • the flattening of the cylindrical outer surface area of the package is not an oblique end face, as is obtained in the production of a biconical package by a uniform reduction in the thread guide stroke, but a deliberately brought about, in particular constant, reduction in diameter at least the end of the cylindrical winding area, which is opposite the thread take-off side.
  • the flattening lies on the side of the bobbin on which the thread reserve lies.
  • the thread take-off side of a bobbin is further defined in that the bobbin tubes have a rounded edge on their end face facing the thread take-off side.
  • bobbins can be accomplished primarily by the fact that the length of the breathing strokes is significantly increased, for example to approximately, in the case of cross-winding devices whose traversing devices have facilities for cyclically shortening and lengthening the thread guide stroke (breathing) in addition to the possibility of image interference to improve the edge structure 20 mm stroke reduction on one or both stroke ends with a basic stroke of the traversing thread guide of 250 mm.
  • the EP application 85 109 799.8 was able to maintain the advantages of the spools with flattened ends and at the same time avoided excessive softness of the spool ends and to produce a spool with the desired, adjustable hardness with excellent running properties.
  • this parabola-like timing diagram is still used to achieve a specific positioning of the thickening on the coil length. Different time diagrams are used so that the thickening is evenly distributed.
  • bobbins are also formed which have thickened areas in their end regions, only the thickening being kept low according to the US-PS and limited according to GB-A to a thread layer which arises during each breathing cycle and then from breathing cycle to breathing cycle be distributed.
  • the measures according to the invention can be applied to cylindrical cross-wound bobbins with straight end faces and those with sloping end faces in longitudinal section (biconical bobbins).
  • the method according to this invention is characterized in that at most two breaths of different sizes, but preferably only breaths of the same size are carried out in constant alternation.
  • the breathing curve between the inner end points and the outer end points of the traversing stroke follows a wave course with valleys similar to parabolas, the apex of the breathing curve lying on the outer end point of the traversing stroke and the slope there being zero.
  • the reversal of the breathing curves in the inner end points occurs essentially discontinuously, in that the parabolic branches of the breathing curve with decreasing traversing stroke and the branches of the breathing curve with increasing traversing stroke merge into one another in the respective inner end point of the traversing stroke.
  • the traverse stroke between the outer end points is referred to as the basic traverse stroke.
  • the basic traverse stroke is also constantly reduced compared to the initial traverse stroke.
  • the initial traverse stroke is the largest traverse stroke of the winding travel. It is moved at the beginning of the winding cycle and determines the length of the bobbin.
  • the respiration curve therefore has a parabolic-like course in the respiratory stroke-time diagram and this course is determined in such a way that the amount of thread deposited in the reversal area of the traversing is evenly distributed over the reversal area.
  • a - theoretically - slightly thickened coil end is thus created at the coil ends at which breathing is carried out, which, however, is not - as before - in the form of an annular bead, but is exactly cylindrical.
  • a coil 102 is formed on the coil sleeve 101.
  • the spool is driven by friction roller 105 on shaft 106.
  • the shaft is driven by motor 50 via a frequency converter 51.
  • the traversing device 107 consists of a thread guide 108 with an angle lever 109, which is rotatably mounted on pins 110.
  • the pin 110 is fastened to a slide 111 which is driven by the sliding shoe 113.
  • the sliding block 113 moves in a helical or spiral groove 114 on the cam drum 115.
  • the sliding block 117 is guided in the guide rail 118 and is rotatably mounted on the pin 116 at the other end of the angle lever 109.
  • the guide rail 118 is rotatably mounted in the pivot point 120.
  • the traversing stroke of the thread guide 108 depends on the inclined position of the guide rail 118.
  • Bar 126 is a series of winding units arranged side by side. assigned and has a central drive, which is described below.
  • the working surface 136 of the cam head 135 acts on the guide rail 118 via transmission cams 128 and transmission member 129 and thus determines the inclined position of the guide rail 118 and consequently the length of the traversing stroke.
  • coils 102 with biconical ends are produced by shortening the traversing stroke as a function of the growing diameter of the coil 102.
  • the guide rail 118 is moved to the left and locked (this will be discussed later), so that the cam head 123 is operatively connected to the shoulder 138 on the guide rail 118 via its working surface 137. In this position, the transmission link 129 is out of operation due to the greater inclination of the guide rail 118.
  • devices for driving and adjusting the rail 126 are shown in the left part of FIG. 1 of this description. These devices (shown schematically) consist of a program unit 18, a signal current converter 19, an electromagnet 20, the magnetic force of which is transmitted to a hydraulic control valve 21, a spring 22 and to the piston of the cylinder-piston unit 23.
  • the piston rod 24 is connected to the end of the adjusting rod 126.
  • the group consisting of magnet 20, control valve 21, spring 22 and cylinder-piston unit 23 is arranged on slide 25. This group is shown in detail as unit 26 in FIG. 2.
  • the unit 26 comprises the electromagnet 20, the hydraulic control valve 21, the spring 22 and the cylinder-piston unit 23.
  • the iron core 27 of the magnet 20 acts on the piston rod 28 of the control valve 21.
  • the piston rod 28 has three control collars 29, 30, 31 , which serve to control the connecting lines between the pump 32, tank 33 and the rear 34 of the cylinder-piston unit 23.
  • the spring 22 acts on the other side of the piston rod 28 via a corresponding spring plate 35.
  • the other end of the spring 22 acts on the spring plate 36 and the piston 37 of the cylinder-piston unit 23.
  • the piston 37 is a differential piston because of its end face 38 is reduced by the area of the piston rod 24.
  • the end face 38 of the piston 37 is permanently connected to the pump 32 via channel 39.
  • the rear 34 of the piston 37 is connected both to the pump 32 via channel 40 and to the tank 33 via channel 41. This connection is controlled by moving the control collar 30, which connects the channel 41 to both channel 40 and channel 42.
  • One arm 43 of the channel 42 leads to the rear 34 of the cylinder-piston unit 23.
  • the other arm 44 serves to compensate for the pressure that prevails on both sides of the hydraulic control valve. It should be noted that piston 37 abuts a shoulder 45 of the cylinder in its outer, left position. As a result, the outermost stroke ends of the coil are mechanically fixed.
  • Fig. 2 it can also be seen that the unit 26 is mounted on a carriage 25.
  • the slide is fastened on two parallel rods 49, which are slidably mounted in plain bearings 46.
  • the carriage 25 is displaceable between two positions, one position being limited by a stop 47 and the other position by a stop from flange 48 to slide bearing 46.
  • one of the winding programs shown in the previous drawings and diagrams is stored in the program unit 18.
  • the program unit generates an output signal which corresponds to a certain traverse stroke length in accordance with one of the traverse programs according to this invention.
  • This output signal is converted by the converter 19 into an electrical current, which activates the magnet 20.
  • the magnetic force is transmitted to the piston rod 28 of the control valve 21, to the spring 22 and to the piston 38 and piston rod 24.
  • unit 26 is mounted on slide 25.
  • the unit 26 and the rod 126 are positioned such that the inclined position of the guide rail 118 via the cam head 135 on the rod 125 is now determined. If the slide 25 and the unit 26 are in this position, biconical coils 102 are produced. If the slide is in the other position, in which the flange 48 bears against the slide bearing 46, the cam head 123 of the rod 126 is in operative connection with the shoulder 138 on the guide rail 118, as a result of which coils 102 with flattened end regions are formed.
  • Fig. 1 also shows that shaft 106 with friction roller 105 is driven by motor 50.
  • Motor 50 is controlled by the output signal of frequency converter 51.
  • the cam drum 115 is driven by motor 52.
  • Motor 52 is controlled by the program unit 53, whereby the traversing speed is changed to prevent unwanted mirrors on the formed roll.
  • the frequency converter 51 is controlled on the one hand by the output signal of the program unit 18, by which the breathing is influenced according to this invention, and on the other hand by the output signal of the program unit 53, by which the traversing speed is changed.
  • Timer 54 coordinates the output signals of the program units 18 and 53, via which the breathing and the change in the traversing speed are controlled according to this invention and in particular according to the diagrams shown.
  • a first exemplary embodiment of the traversing method according to this invention is described below with reference to FIGS. 3 and 4.
  • FIG. 3a shows the method of breathing, i.e. the change of the traversing stroke over time. Except for the exception cited above, the breathing methods that have become known so far use breathing laws with a zigzag-shaped but rectilinear course. In contrast, a breathing law with a parabolic shape is provided according to this invention, as shown in Fig. 3a.
  • the time on the abscissa of the diagram shown there is shown on the ordinate, the end area of the traversing stroke N or the breathing stroke A.
  • the curves shown represent the end points at which the traversing thread guide 108 (FIG. 1) indicates the course of the winding travel over time reverses a coil end.
  • the time-distance diagram of the traversing thread guide 108 is shown in a partial time area of the diagram according to FIG. 3a, wherein. the display on the time axis can only be shown distorted in the drawing, since the traversing speed is actually faster.
  • the course of this time-path diagram is designated by 8. It can be seen from this time-path diagram 8 that the end points E, at which the traversing thread guide reverses, continuously move a parabolic arc between the vertex Ea (outer end point) and the inner end point Ei in the course of a cycle time.
  • the end points E are identical to the apex of the respective traverse stroke.
  • the parabolic arch is referred to in this application as the "breathing curve”.
  • the distance A Ea - Ei is referred to in this application as "maximum breathing stroke" and is 25 mm when breathing is carried out.
  • the cycle time of an implemented breathing law was 6 seconds. It can be seen from the diagram shown in Fig. 3a that the respiratory curve at apex Ea has zero slope and that the branches of the respiratory curve enter the inner end points Ei at a rather acute angle. This corresponds to the ideal course.
  • the This ideal course can only be selected if the mechanics shown in FIG. 1, ie in particular the drive of the guide rail 118, can represent the required rapid reversal of movement. If this is not the case, the method is used according to the invention, which is described below with reference to FIGS. 5 to 7.
  • the interference curve 2 is shown in FIG. 3b, with the same abscissa as the time axis and with the traversing speed DH as the ordinate.
  • the traversing speed is given as the double stroke rate DH.
  • the double stroke number is the number per unit time of the back and forth movements of the traversing thread guide 108 (FIG. 1).
  • the traversing thread guide 108 is operated with a certain average double stroke rate DHM. This average double stroke number is related to the surface speed given to the bobbin by the drive roller 105 and determines the angle at which the thread is deposited on the bobbin.
  • the traversing speed is now continuously varied between an upper limit value DHO and a lower limit value DHU, e.g. according to the linear, sawtooth-shaped fault law.
  • the breathing law 1 and the disturbance law 2 are synchronized in such a way that the lowest traversing speed DHU always coincides with the largest traversing stroke in the peak value Ea of the breathing curve and the highest traversing speed DHO with the smallest traversing stroke in the inner end point of the breathing curve. This ensures that the change in the linear traversing speed, which is caused by breathing, is compensated for by an opposite course of the perturbation and the thread tension is thereby kept constant or is very evenly leveled.
  • the average traversing speed preferably remains constant in the course of the winding cycle, but can also be slightly increased or decreased during the winding cycle to influence the storage angle.
  • the filing of the thread on the bobbin is not only based on the traversing law, which is predetermined by the shape of the cam drum 115. Rather, it must also be taken into account that the thread is under tension when it is deposited on the bobbin and therefore does not deposit according to the traversing law specified by the cam drum. The thread therefore tends to form an arc with the smallest possible curvature in the reversal area.
  • the size of the curvature depends on the thread tension on the one hand, but on the other hand also on different thread parameters, in particular the friction of the thread on the deposited thread layers.
  • the quality of the bobbin therefore depends not only on the traversing law of the cam drum 115, but even more on the actual placement of the thread on the bobbin. Therefore, the reversal area Ba is preferably measured on a bobbin as the axial distance between the end of the traversing stroke predetermined by the cam drum through the cam drum and the normal plane of the bobbin, in which the curved reversal area of the thread actually deposited on the bobbin merges into the area of the linearly deposited thread.
  • 4a shows that the traversing curve of the traversing thread guide 108 is moved back and forth from the end region to the center of the bobbin by pivoting the guide rail 118 (breathing).
  • 4a shows the axially outermost traversing curve with the curve pieces 4 and 6 as well as the axially innermost traversing curve 9 (dash-two-dotted lines) and in between three arbitrarily selected traversing curves 10 (dashed lines), 11 (chain-dotted lines), 12 (dotted lines) .
  • These curves 10, 11, 12 are traversed in arbitrarily selected fractions of the cycle time of a breathing stroke, once in both directions of breathing.
  • the distance between the apex Ea of the axially outermost traversing curve and its transition point 5, at which the straight curve curve 4 merges into the curved curve curve 6, is referred to in the context of this application as the reversal region Ba. It now appears from Fig. 4a that the breathing stroke A, ie the axial distance between the outer end point Ea and the inner end point Ei of the traversing stroke, essentially corresponds to the reversal area Ba and is at least the same size.
  • the breathing stroke A is preferably greater than the reversal area Ba.
  • the reversal area B is the axial length of the bobbin, on which the thread does not lie at a constant angle of deposit. This area must be determined from case to case by measurement.
  • the outer reversal area Ba is the reversal area that the thread has with the greatest traversing stroke. The turning range depends, as will be explained, on the one hand on the traversing law, according to which the direction of movement of the thread at the ends of the traversing stroke is reversed with finite deceleration and acceleration, but also on the thread pulling force and friction with which the thread on the Coil is deposited.
  • the diagram according to Fig. 4b shows the length L of the bobbin on the abscissa, starting from the outer vertex Ea and the thickness of the thread layer on the ordinate, e.g. measured in millimeters, which is stored on the spool per unit of time.
  • the curve 6.2 shows the course of the thread layer thickness when the traversing thread guide keeps the traversing curve after the curves 4, 6 in Fig. 4a.
  • each of the instantaneous traversing curves 9, 10, 11, 12 shown in FIG. 4a results in an assigned, deposited layer thickness profile 9.2, 10.2, 11 . 2 , 12 .2 leads.
  • FIGS. 4a to 4c are simplified insofar as only four further individual traversing curve profiles of the traversing thread guide or the layers generated with these traversing curve profiles are shown during a breathing stroke. In reality, all traversing curves that lie between the traversing curves 4, 6 and 9 shown are traversed.
  • the maximum breathing stroke essentially corresponds to the axial length of the reversal area.
  • the breathing curve according to FIG. 3a is calculated so that the sum of the layer thicknesses formed is constant over the entire breathing stroke Amax and results in a cylindrical coil surface OB.
  • 4c shows the layer 6.3 which is generated at the apex of the breathing stroke by the traversing curve 4, 6 (FIG. 4a).
  • the layer thickness of the layer 6.3 is determined such that the maximum located at the end of the coil results in the enlarged diameter D of the coil desired in the deflection area. This applies to the gradual observation. In reality, i.e. in the case of a constant breathing curve, this specification results from the curvature of the breathing curve at the apex.
  • the layer 10.3 which is wound onto the layer 6.3 may only be so large that its maximum with the layer 6.3 below it again reaches the desired diameter of the end region Ea.
  • Layer 10.3 is generated by traversing curve 10. Traversing curve 10 is approached for a certain period of time while the traversing stroke is reduced (outward breathing) and for a certain period of time while the traversing stroke increases (return path of breathing).
  • the duration of the outward and return journey of breathing can preferably be the same.
  • the respiratory curve is mirror-symmetrical to the traversing axis at its apex.
  • the duration of the outward and return journey of breathing can also be unequal.
  • the result is an asymmetrical breathing curve.
  • the total period of time which is observed for the traversing curve 10 is predetermined by the maximum diameter D of the thread layers previously wound.
  • this time period corresponds to a specific slope and curvature of the breathing curve to be specified at the point of the breathing stroke at which the traversing curve 10 is driven.
  • the slope or curvature for the outward and return path of breathing can be different.
  • layer 11.3 is wound onto layers 6.3 and 10.3 by setting the traversing curve 11 (FIG. 4a).
  • This traversing curve 11 in turn creates a layer with a maximum thickness.
  • By specifying the times during which the traversing curve 11 is maintained on the outward and return path of breathing determines the maximum of the layer 11.3 in such a way that, together with the layers 6.3 and 10.3 underneath, it results in the predetermined diameter D of the layers wound one above the other in the preceding stages of the breathing stroke.
  • FIG. 4c when viewed step by step in the reversal area Ba, theoretically a coil surface with individual sharp rings is created. If the breathing is provided according to the invention - but takes place continuously or the breathing levels are chosen to be as small as is dictated by the digital electronic control, a smooth, cylindrical surface with the diameter D that is larger than the coil diameter d in the region of the coil length is produced with a straight line traverse curve.
  • the breathing curve is thus calculated and specified in such a way that the amount of thread deposited per unit length of the bobbin is distributed into a cylindrical amount.
  • the slope and curvature of the breathing curve and the course of the slope determine the exact observance of the quantity distribution over the reversal area Ba of the coil. It is. It can be seen that the course of the guide groove 114 in the reversal area B is also included in the calculation of the breathing curve.
  • the thread diameter and other quality parameters of the thread also come into consideration as correction factors. These factors can be determined in particular by experimentally determining the distance between the theoretical apex Eth (FIG. 4a) of the traversing law and the actually determined extreme apex of the thread deposit on the bobbin.
  • 5a, 5b, 6a, 6b As the time-path diagram of the traversing stroke according to FIG. 5a shows, breathing takes place with a variable breathing stroke A1, A2, A3 etc. and the disturbance with a variable interference amplitude C1, C2, C3 etc.
  • the abscissa is the time axis.
  • 5a the traverse path H or the breathing stroke A is plotted on the ordinate.
  • 5b the traversing speed is plotted on the ordinate.
  • the traversing speed is given as the double stroke rate DH.
  • the double stroke number is the number per unit time of the back and forth movements of the thread guide 108 (FIG. 1).
  • the traversing speed is continuously varied between the lower, fixed limit value DHU and an upper, variable limit value DHO, whereby - as shown - a linear, sawtooth-shaped fault law can also be used here.
  • the breathing law 1 and the disturbance law 2 are synchronized in such a way that the lowest traversing speed DHU always coincides with the largest traversing stroke in the peak value EA of the breathing curve and the highest traversing speed DHO coincides with the smallest traversing stroke in the inner end point of the breathing curve.
  • This synchronization serves to compensate the thread tension fluctuations, which are caused on the one hand by breathing and on the other hand by the disturbance.
  • the mirror disturbance takes place here in such a way that the lower traversing speed DHU is predetermined via the winding travel. Therefore, the mean value of the traversing speed does not remain constant in the course of a series of mirror disturbance cycles with a variable upper traversing speed DHO. As a result, the deposit angle of the thread on the bobbin is also changed in its mean value. The change is, however, very small.
  • the lower value of the traversing speed DHU preferably remains constant during the winding cycle. However, it is also possible to change the lower value during the winding cycle, e.g. let it fall off weakly or rise slightly during the first third of the winding cycle and then let it fall off slowly.
  • FIG. 5a shows three breathing cycles from a series of four breathing cycles. However, more can be added to a series, e.g. include eight breathing cycles.
  • the series of related breathing cycles is characterized in that the breathing stroke A1 of the first breathing cycle is equal to the maximum breathing stroke and that the breathing stroke A2, A3 ... of the following breathing cycles is then continuously shortened from one breathing cycle to the next. The next immediately following series of breathing cycles begins again with the maximum breathing stroke.
  • the breathing curve represents the displacement of the end point of a traversing stroke during a breathing cycle.
  • the breathing curve typically consists of a shortening branch K and an extension branch L.
  • the shortening branch represents the shortening of the traversing stroke between the outer vertex Ea and the inner vertex Ei of the traversing stroke H.
  • the extension branch shows the time course of the extension of the apex of the traversing stroke H between the inner apex Ei and the outer apex Ea.
  • a shortening branch K and an extension branch L are assigned to a respiratory cycle.
  • the first breathing cycle shown in FIG. 5a now has the shortening branch K1 and the extension branch L1.
  • the breathing curve extends over the maximum breathing stroke Amax.
  • the basic curve of the breathing curve of the first cycle which is shown as a solid line, is designed such that - as already described above with reference to the diagram according to FIGS. 4b, 4d, 4c and 3a - the thickness of the deposited thread layer in the entire breathing stroke A.
  • ma x is constant and results in a cylindrical coil surface.
  • This layer is marked as layer 1 in FIG. 6a.
  • the breathing curve is corrected as indicated by the dashed curve 13.1.
  • the breathing curve 13.1 is designed such that an additional thread quantity 14.1 is deposited in the axial excess area D1 of the bobbin, which is the difference between the maximum breathing stroke Amax or A1 and the breathing stroke A2 of the next breathing cycle with the branches K2, L2.
  • This thread quantity 14.1 forms a layer which is as thick as the sum of all layers which are deposited in the reversal area Ba of the bobbin during the series of breathing cycles concerned.
  • the resulting breathing curve after the dashed curve 13.1 now has the advantage over the ideal, drawn curve that in the inner end point Ei there is a relatively gentle reversal of the shortening branch K1 into the extension branch L1.
  • the correction 13.1 is ideally limited to the upper range D1, that for practical, in particular dynamic reasons, possibly. however, a further correction is advisable - as shown. The effects of this further correction on the thread placement can, however, be kept low.
  • FIG. 5a shows, the following breathing cycle is carried out with a shortened breathing stroke A2.
  • the breathing cycle consists of the shortening branch K2 and the extension branch L2.
  • the basis for the calculation of this curve again is the specification that the thread is uniform over the area of the breathing stroke A2, i.e. should be distributed to an equally thick layer 2 (Fig. 6a). However, this curve is also corrected, and the dashed curve 13.2 is practically driven.
  • This dashed curve is designed so that in the axial excess area D2 of the coil between the inner end points Ei2 and Ei3 of the subsequent breathing cycle, an additional amount of thread 14.2 is deposited in such a way that a layer thickness is reached in the axial area D2, which is the sum of all layers of the in of the affected series corresponds to the following shortened breathing cycles
  • the breathing stroke is again shortened, namely to the breathing stroke A3.
  • the shortening branch K3 and the extension branch L3 are designed in their basic course so that the thread quantity is distributed over the breathing stroke A3 to form a cylindrical layer 3.
  • the amount of thread 14.3 (FIG. 6a) is additionally stored in the excess area D3 of the bobbin by again making the dashed-line correction 13.3 of the breathing curve.
  • the additional thread quantity 14.3 in turn reaches the layer thickness of the entire thread layer, which is deposited in the reverse region in the series of breathing cycles.
  • the breathing curve is designed so that a uniformly cylindrical layer is wound over the A4 breathing stroke.
  • FIGS. 6a and 6b The layer structure of the end region is shown in FIGS. 6a and 6b, four breathing cycles being carried out in a series.
  • FIG. 6a in a schematic representation that this modified method also results in a cylindrical winding over the breathing area Amax, which has a somewhat larger diameter than the winding in the central area of the coil.
  • the reversal area Bi which adjoins the maximum breathing stroke Amax, there is a smooth transition between the winding with a larger diameter and the winding with a smaller diameter, as already described above with reference to FIG. 4c.
  • FIG. 6b shows the layer formation, which is shown schematically in FIG. 6a, in a manner which comes closer to practice.
  • the thread is a linear structure.
  • the individual thread turns of a layer do not lie close together, but at a distance that can be a few millimeters. Because of this thread spacing of successive turns, the turns deposited in a later layer are always, i.e.
  • Fig. 5b shows that for the mirror disturbance, the traversing speed, starting from the lower double stroke rate DHU, is increased synchronously with the shortening of the traversing stroke H, the upper value of the double stroke rate (DH02, DH03 ...) being proportional to the respective one in each mirror fault cycle Shortening the breathing stroke A1, A2, A3 ... compared to the double stroke number DHO of the previous mirror disturbance cycle is also reduced.
  • the mirror interference amplitude C3 is the difference between the smallest upper double stroke rate DH03 and the lower double stroke rate DHU.
  • Half the cycle time T / 2 is the time for increasing the double stroke rate from DHU to DHO.
  • the ratio C3 / T / 2 shows the smallest slope of the mirror interference curves according to FIG. 5b.
  • This lowest pitch must be so great that two thread turns, which are placed directly next to one another by successive traversing strokes, have a distance measured perpendicular to the thread that is at least equal to the thread thickness.
  • FIGS. 7a to 7c Another embodiment of the invention will now be explained with reference to FIGS. 7a to 7c.
  • the breathing law and the resulting thread deposit on the bobbin corresponds to the description and illustration according to FIGS. 5a and 6a, 6b.
  • the execution of the mirror disturbance according to FIG. 7b corresponds to the representation and description according to FIG. 3b. That is, the mirror interference amplitude is constant.
  • the circumferential speed of the coil - as shown in FIG. 7c - is increased in synchronism with breathing or mirror disturbance in this exemplary embodiment.
  • the peripheral speed of the coil is equal to the initial value VAO.
  • the traversing speed is increased again, to an increased value V3.
  • the difference V3 - V1 is in turn proportional to the total shortening of the breathing stroke A max - A3.
  • FIGS. 8a to 8c corresponds to the representation and description according to FIG. 3b. That is, the mirror interference amplitude is constant.
  • FIGS. 8a, 8c which is described below, can also be combined with a mirror interference method according to FIG. 5b.
  • the possibility of varying the mirror interference amplitude will be used in particular if this is necessary to compensate for thread tension fluctuations. In this respect, reference is made to the description of FIG. 3b.
  • a biconical winding is produced with the aid of the traversing diagram according to FIG. 8a.
  • the thread is laid with the initial traverse stroke H1.
  • the traversing stroke H is constantly reduced, on both sides of the coil. This creates a cylindrical coil with flattened, i.e. conical faces.
  • D The difference in the axial winding length between the initial winding and the final winding. This means that the basic traverse stroke becomes smaller and smaller during the winding cycle. Breathing now starts from this decreasing basic traverse stroke.
  • Breathing takes place with a variable breathing stroke A1, A2, A3 etc. Both in FIGS. 8a to 8c, the abscissa is the time axis.
  • the traversing speed is plotted on the ordinate in FIG. 8b.
  • the traversing speed is given as the double stroke rate DH.
  • the double stroke number is the number. per unit time of the back and forth movements of the thread guide 108 (FIG. 1).
  • the traversing speed is continuously varied between the lower, fixed limit value DHU and an upper, variable limit value DHO, with a linear, sawtooth shape, as shown law can be applied.
  • the breathing law 1 and the disturbance law 2 are synchronized in such a way that the lowest traversing speed DHU always coincides with the largest traversing stroke in the peak value EA of the breathing curve and the highest traversing speed DHO coincides with the smallest traversing stroke in the inner end point of the breathing curve.
  • This synchronization serves to compensate the thread tension fluctuations, which are caused on the one hand by breathing and on the other hand by the disturbance.
  • the traverse path H or the breathing stroke A is plotted on the ordinate. It can be seen that the basic traverse stroke changes constantly compared to the initial traverse stroke. In the illustration according to FIG. 8a, the basic traversing stroke forms a straight line rising at the angle beta. The traversing stroke now constantly returns to this basic traversing stroke in the course of a breathing cycle and the breathing strokes A1 to A4 are calculated from this basic traversing stroke.
  • FIG. 8a Three breathing cycles from a series of four breathing cycles are shown in FIG. 8a. However, more can be added to a series, e.g. include eight breathing cycles.
  • the series of related breathing cycles is characterized in that the breathing stroke A1 of the first breathing cycle is equal to the maximum breathing stroke and that the breathing stroke A2, A3 ... of the following breathing cycles is then continuously shortened from one breathing cycle to the next. The next immediately following series of breathing cycles be. starts again with the maximum breathing stroke.
  • the breathing curve represents the reduction of the traversing stroke compared to the basic traversing stroke during one breathing cycle.
  • the breathing curve typically consists of a shortening branch K and an extension branch L.
  • a shortening branch K and an extension branch L are assigned to a respiratory cycle.
  • the first breathing cycle shown in FIG. 8a now has the shortening branch K1 and the extension branch L1.
  • the breathing curve extends over the maximum breathing stroke Amax.
  • the basic curve of the breathing curve of the first cycle which is shown as a solid line, is designed such that - as already described above with reference to the diagram according to FIGS. 4b, 4d, 4c and 3a - the thickness of the deposited thread layer in the entire breathing stroke A.
  • ma x is constant and results in a cylindrical coil surface.
  • This layer is marked as layer 1 in FIG. 9a.
  • the breathing curve is corrected as indicated by the dashed curve 13.1.
  • the breathing curve 13.1 is designed such that an additional thread quantity 14.1 is deposited in the axial excess area D1 of the bobbin, which is the difference between the maximum breathing stroke Amax or A1 and the breathing stroke A2 of the next breathing cycle with the branches K2, L2.
  • This thread quantity 14.1 forms a layer which is as thick as the sum of all layers which are deposited in the reversal area Ba of the bobbin during the series of breathing cycles concerned.
  • the resulting breathing curve after the dashed curve 13.1 now has the advantage over the ideal, drawn curve that in the inner end point Ei there is a relatively gentle reversal of the shortening branch K1 into the extension branch L1.
  • the correction 13.1 is ideally limited to the excess area D1, that for practical, in particular dynamic reasons, possibly. however, a further correction is advisable - as shown. The effects of this further correction on the thread placement can, however, be kept low.
  • FIG. 8a shows the following breathing cycle is carried out with a shorter breathing stroke A2.
  • the breathing cycle consists of the shortening branch K2 and the extension branch L2.
  • the basis for the calculation of this curve again is the specification that the thread is uniform over the area of the breathing stroke A2, i.e. to be distributed to an equally thick layer 2 (Fig. 9a). However, this curve is also corrected, and the dashed curve 13.2 is practically driven.
  • This dashed curve is designed so that in the axial excess area D2 of the coil between the inner end points Ei2 and Ei3 of the subsequent breathing cycle, an additional amount of thread 14.2 is deposited in such a way that a layer thickness is reached in the axial area D2, which is the sum of all layers of the in of the affected series corresponds to the following, shorter breathing cycles.
  • the breathing stroke is again shortened, namely to the breathing stroke A3.
  • the shortening branch K3 and the extension branch L3 are designed in their basic course so that the thread quantity is distributed over the breathing stroke A3 to form a cylindrical layer 3.
  • the amount of thread 14.3 (FIG. 9a) is additionally stored in the excess area D3 of the bobbin, by again making the dashed-line correction 13.3 of the breathing curve.
  • the additional thread quantity 14.3 in turn reaches the layer thickness of the entire thread layer, which is deposited in the reverse region in the series of breathing cycles.
  • the breathing curve is designed so that a uniformly cylindrical layer is wound over the A4 breathing stroke.
  • FIGS. 9a and 9b The layer structure of the end region is shown in FIGS. 9a and 9b, four breathing cycles being carried out in a series.
  • FIG. 9a in a schematic representation that the shortening of the basic traversing stroke compared to the initial traversing stroke leads to the end faces of the coil being erased, i.e. is wound conically.
  • the cone angle has been drawn oversized in FIGS. 9a, b. In reality, changing the basic traverse stroke during a breathing cycle that lasts a few seconds does not have as much of an impact.
  • FIG. 9a in a schematic representation that this modified method also results in a cylindrical winding over the breathing area A max , which has a somewhat larger diameter than the winding in the central area of the coil.
  • the reversal area Bi which adjoins the maximum breathing stroke A max , there is a smooth transition between the winding with a larger diameter and the winding with a smaller diameter, as already described above with reference to FIG. 4c.
  • FIG. 9b shows the layer formation, which is shown schematically in FIG. 9a, in a manner which comes closer to practice.
  • the slope angle of the front edge is also drawn too large in FIG. 9b.
  • the thread is a linear structure.
  • the individual thread turns of a layer do not lie close together, but at a distance that can be a few millimeters.
  • the traversing speed starting from the lower double stroke rate DHU, could be increased synchronously with the shortening of the traversing stroke H, the upper value of the double stroke rate (DH02, DH03 ...) being proportional to each mirror disturbance cycle the respective shortening of the breathing stroke A1, A2, A3 ... compared to the double stroke number DHO of the previous mirror disturbance cycle is also reduced.
  • the comments on FIG. 5b reference is made to the comments on FIG. 5b.
  • the breathing process is operated with constant mirror disturbance - as shown in FIG. 8b - it may be advantageous to also change the peripheral speed to compensate for thread tension fluctuations, as shown in relation to FIG. 8c.
  • the peripheral speed is increased synchronously with the decreasing basic traverse stroke compared to the initial value of the peripheral speed VAO.
  • This continuously increasing circumferential speed is designated in the diagram according to FIG. 8c, in which the ordinate represents the circumferential speed of the coil, with "basic circumferential speed".
  • the circumferential speed of the coil - as shown in FIG. 8c - is increased in synchronism with the respiration or mirror disturbance compared to the basic circumferential speed in this exemplary embodiment.
  • the peripheral speed of the coil is equal to the basic peripheral speed. Synchronized with the start of a breathing cycle with a shortened breathing stroke.
  • A2 there is also a slight increase in the peripheral speed V of the coil, the difference between V2 and V1 being proportional to the difference between the breaths A1 and A2. Then, as the traversing stroke is extended, the traversing speed is again reduced to the basic peripheral speed. When the next breathing cycle is carried out, the traversing speed is increased again, to an increased value V3.
  • the difference V3 - V1 is in turn proportional to the total shortening of the breathing stroke A max - A3.

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

Claims (10)

1. Procédé d'enroulement d'un fil en une bobine croisée avec mouvement alternatif (va-et-vient) du fil et changement du sens du déplacement du guide- fil dans les zones d'inversion de la course de va-et-vient avec décélération finie et accélération finie prédéterminées, ainsi qu'avec respiration de la course de va-et-vient suivant un diagramme en fonction du temps en forme d'onde avec creux paraboliques (courbe de respiration), la courbe de respiration ayant son sommet au point d'extrémité externe de la course de va-et-vient et changeant de sens avec grandes décélération et accélération au point d'extrémité le plus interne de la course de va-et-vient, caractérisé par le fait que la respiration s'effectue de façon qu'au moins dans la zone d'inversion (Ba) de la plus grande course de va-et-vient, la quantité de fil enroulée soit répartie sensiblement régulièrement en un enroulement cylindrique, l'enroulement cylindrique ayant un diamètre légèrement plus grand que la zone médiane de la bobine et que la courbe de respiration dans le sens axial s'étend au moins sur toute la zone d'inversion (Ba) du va-et-vient en cas de course de va-et-vient maximale.
2. Procédé selon la revendication 1, caractérisé par le fait que la course de respiration Amax des courbes de respiration successives restent identique.
3. Procédé selon la revendication 1, caractérisé par le fait que dans une série de cycles de respiration successifs, la course de respiration d'un cycle (deuxième) est raccourcie par rapport à la course de respiration du cycle précédent (premier), que le diagramme en fonction du temps du premier cycle de respiration est établi de manière que (conformément à la revendication 1) dans sa course de respiration (Amax = A1) la quantité de fil enroulée soit répartie sensiblement régulièrement en un enroulement cylindrique, et qu'en plus, dans la partie excédentaire (D1 appartenant à la première course de respiration et dont la course de respiration (A1 ) du premier cycle dépasse la course de respiration (A2) du deuxième cycle consécutif (D1 = A1 - A2), une quantité supplémentaire de fil soit déposée en une épaisseur qui correspond sensiblement à l'épaisseur des couches de tous les cycles suivants à course de respiration raccourcie.
4. Procédé selon la revendication 3, caractérisé par le fait que dans une série de cycles de respiration, la course de respiration (A1, A2, A3 ...) des cycles successifs est continuellement diminuée et est à nouveau augmentée à la valeur initiale (A1 = Amax) de la course de respiration au début de la nouvelle série.
5. Procédé selon l'une des revendications 3 ou 4, caractérisé par le fait que la prévention du rubanage est effectuée en synchronisme avec les cycles de respiration en vue de la compensation de la tension du fil, l'amplitude de prévention du rubanage (C1, C2, C3...), qui est la différence (DHO - DHU) entre les vitesses de va-et-vient maximale et minimale, diminuant en fonction de la diminution de la course de respiration (A1, A2, A3 ...) pendant une série de cycle de respiration.
6. Procédé selon la revendication 5, caractérisé par le fait que la prévention du rubanage est effectuée de façon que la vitesse de va-et-vient minimale (DHU) au cours de la formation de la bobine se comporte suivant un principe prédéterminé pour le temps de réalisation de la bobine pleine (par exemple reste constante) et que la vitesse de va-et-vient pendant chaque série de cycles de respiration soit augmentée en synchronisme avec l'augmentation de la course de respiration à une valeur maximale (DH01, DH02, DH03 ...) qui dépend de la grandeur, à chaque fois considérée, de la course de respiration (A1, A2, A3 ...).
7. Procédé selon l'une des revendications 1 à 6, caractérisé par le fait que la durée d'un cycle de respiration et du cycle de prévention du rubanage synchronisé avec celui-ci ainsi que la plus petite valeur de la vitesse de va-et-vient maximale (DH04) d'une série de courses de respiration sont choisies suffisamment grandes pour que la variation du facteur de bobinage (vitesse de rotation de la broche/vitesse de va-et-vient), qui est provoquée pendant une course double par la variation de la vitesse de va-et-vient, produise entre deux spires de fil successives un écartement qui est plus grand que la largeur de dépose du fil sur la bobine.
8. Procédé selon l'une des revendications précédentes, caractérisé par le fait que pour la compensation de la tension du fil, on augmente la vitesse périphérique de la bobine en synchronisme avec les cycles de respiration de manière que la plus grande course de respiration soit synchronisée avec la plus grande vitesse périphérique de la bobine.
9. Procédé selon la revendication 3 ou 4, caractérisé par le fait que la prévention du rubanage s'effectue en synchronisme avec les cycles de respiration en vue de la compensation de la tension du fil, l'amplitude de prévention du rubanage (C1), qui est la différence (DHO - DHU) entre les vitesses de va-et-vient maximale et minimale, restant constante et que la vitesse périphérique de la bobine, à tous les cycles de respiration à course de respiration diminuée, est modifiée en fonction de la grandeur de la diminution de la course de respiration de manière que la tension du fil reste sensiblement constante.
10. Procédé selon l'une des revendications précédentes, caractérisé par le fait que pour la compensation de la tension du fil, on augmente la vitesse périphérique de la bobine en synchronisme avec la diminution de la course de va-et-vient.
EP87101028A 1986-01-31 1987-01-26 Méthode pour pelotonner un fil pour former une bobine croisée Expired - Lifetime EP0235557B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3602853 1986-01-31
DE19863602853 DE3602853A1 (de) 1986-01-31 1986-01-31 Verfahren zum aufwickeln eines fadens zu einer kreuzspule
DE19863608816 DE3608816A1 (de) 1986-03-18 1986-03-18 Verfahren zum aufwickeln eines fadens zu einer kreuzspule
DE3608816 1986-03-18
DE19863616362 DE3616362A1 (de) 1986-05-15 1986-05-15 Verfahren zum aufwickeln eines fadens zu einer kreuzspule
DE3616362 1986-05-15

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EP0235557A2 EP0235557A2 (fr) 1987-09-09
EP0235557A3 EP0235557A3 (en) 1987-10-28
EP0235557B1 true EP0235557B1 (fr) 1990-03-28

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US (1) US4913363A (fr)
EP (1) EP0235557B1 (fr)
CN (1) CN1008620B (fr)
DE (1) DE3762036D1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US6283401B1 (en) 1999-05-14 2001-09-04 Barmag Ag Method and apparatus for winding a continuously advancing yarn
US7163174B2 (en) 2000-01-13 2007-01-16 Saurer Gmbh & Co. Kg Method and apparatus for winding a yarn package

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
JP2511711B2 (ja) * 1989-09-30 1996-07-03 帝人製機株式会社 糸条の巻取方法
AU6270698A (en) 1997-02-05 1998-08-25 Plant Engineering Consultants, Inc. Precision winding method and apparatus
TW368490B (en) * 1997-02-27 1999-09-01 Barmag Barmer Maschf Method of and apparatus for winding a continuously advancing textile yarn into a core supported package by controlling the acceleration and/or deceleration of the yarn guide to modify the yarn deposit in the package edges
DE19835888B4 (de) * 1998-02-19 2011-06-16 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Aufwickeln eines Fadens
DE50007296D1 (de) 1999-05-06 2004-09-09 Saurer Gmbh & Co Kg Verfahren und vorrichtung zum aufwickeln eines kontinuierlich zulaufenden fadens
FR2845073B1 (fr) * 2002-09-26 2005-07-15 Rieter Icbt Dispositif de renvidage d'un fil sur un support entraine en rotation
JP2016128353A (ja) * 2015-01-09 2016-07-14 村田機械株式会社 糸巻取機、パッケージ及びパッケージの製造方法
DE102015009191A1 (de) * 2015-07-16 2017-01-19 Saurer Germany Gmbh & Co. Kg Verfahren zur Herstellung einer Kreuzspule
CN109748143B (zh) * 2018-10-24 2022-03-08 华东理工大学 一种电子往复式多级精密卷绕控制方法
JP7361569B2 (ja) * 2019-10-29 2023-10-16 宇部エクシモ株式会社 巻糸パッケージ及びその製造方法

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GB1194337A (en) * 1966-10-06 1970-06-10 Scragg & Sons Improvements in or relating to Packaging Mechanisms for Textile Machines.
DE1916580C3 (de) 1969-04-01 1974-02-28 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Changier vorrichtung an Aufwickelvorrichtungen
DE2937601A1 (de) 1979-09-18 1981-04-02 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Verfahren zum aufwickeln von faeden
JPS5817066A (ja) * 1981-07-22 1983-02-01 Teijin Seiki Co Ltd 糸条の巻取方法
US4555069A (en) * 1981-11-02 1985-11-26 Murata Kikai Kabushiki Kaisha Yarn winding apparatus and method
DE3562216D1 (en) * 1984-08-18 1988-05-26 Barmag Barmer Maschf Cylindrical cross-wound bobbin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6283401B1 (en) 1999-05-14 2001-09-04 Barmag Ag Method and apparatus for winding a continuously advancing yarn
US7163174B2 (en) 2000-01-13 2007-01-16 Saurer Gmbh & Co. Kg Method and apparatus for winding a yarn package

Also Published As

Publication number Publication date
DE3762036D1 (de) 1990-05-03
CN1008620B (zh) 1990-07-04
CN87100444A (zh) 1987-10-07
EP0235557A3 (en) 1987-10-28
US4913363A (en) 1990-04-03
EP0235557A2 (fr) 1987-09-09

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