EP0311815A2 - Méthode et dispositif pour égaliser la tension du fil pendant le rebobinage d'une cannette sur une bobine croisée - Google Patents

Méthode et dispositif pour égaliser la tension du fil pendant le rebobinage d'une cannette sur une bobine croisée Download PDF

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Publication number
EP0311815A2
EP0311815A2 EP88115259A EP88115259A EP0311815A2 EP 0311815 A2 EP0311815 A2 EP 0311815A2 EP 88115259 A EP88115259 A EP 88115259A EP 88115259 A EP88115259 A EP 88115259A EP 0311815 A2 EP0311815 A2 EP 0311815A2
Authority
EP
European Patent Office
Prior art keywords
yarn
winding
cop
bobbin
speed
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.)
Granted
Application number
EP88115259A
Other languages
German (de)
English (en)
Other versions
EP0311815A3 (en
EP0311815B1 (fr
Inventor
Karl-Josef Dr.-Ing. Brockmanns
Josef Dr.-Ing. Derichs
Edmund Wey
Hans Grecksch
Leo Tholen
Manfred Lassmann
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 Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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 DE19873733597 external-priority patent/DE3733597A1/de
Priority claimed from DE19873734395 external-priority patent/DE3734395A1/de
Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0311815A2 publication Critical patent/EP0311815A2/fr
Publication of EP0311815A3 publication Critical patent/EP0311815A3/de
Application granted granted Critical
Publication of EP0311815B1 publication Critical patent/EP0311815B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H54/40—Arrangements for rotating packages
    • 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
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/74—Driving 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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/24—Surfaces movable automatically to compensate for variation in tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/082—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle responsive to a predetermined size or diameter of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/084—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle responsive to a predetermined weight of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B65H2513/11—Speed angular
    • 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 methods and apparatus for equalizing the yarn tension when rewinding a cop on a package by means of a winding device.
  • the invention has for its object to improve the productivity of the individual winding unit.
  • this object is achieved in that the amount of yarn of the cop is detected and a yarn quantity signal is forwarded to the winding device and that the winding speed is reduced according to the amount of yarn in the cop and according to a preselectable function.
  • the increase in thread tension in the area of the last third to fifth of the bobbin is the limit for the maximum possible winding speed.
  • the yarn can bear the increase in load that would result from an increase in the bobbin winding speed.
  • the bobbin filling is detected and a signal is forwarded to the winding device.
  • the winding speed can then be reduced so that the permissible thread tension is not exceeded.
  • the new procedure leads to a more even thread tension curve, which has a positive effect on the quality of the bobbin.
  • the amount of thread can be determined optoelectronically, gravimetrically or by measuring the thread tension or the thread tension. With an empty bobbin, the thread tension increases at the same take-off speed, so that the increase is an indication of the amount of thread still present.
  • two actuators can be operated simultaneously or in chronological order. It is also possible to use the thread brake only at the time of starting, but then very quickly to increase the winding speed to a value that is as high as possible that the use of the thread brake becomes superfluous and only the second control loop is used.
  • each drive motor is controlled according to a preselectable winding speed control program with a winding speed curve, in which the winding speed is reduced with the winding time, that in the bobbin feed device for a particular winding position requested cops automatically determined the respective amount of yarn on the head tube and processed into a yarn quantity signal, that the starting speed of the winding unit is related to the amount of yarn and that a starting speed is automatically selected on the winding speed curve, which corresponds to the size of the respective yarn quantity signal and that the greater the amount of yarn, the greater.
  • the amount of yarn is determined at a central point or at the winding point.
  • the thread quantity signal goes to the winding unit receiving the bobbin, which now adjusts itself to the starting speed adapted to the thread quantity.
  • the unwinding time of a full bobbin is already known for the selected winding speed curve. If not, this is determined by an unwinding test.
  • the winding time is related to the amount of yarn.
  • the bobbin time is longest for a full bobbin with the maximum amount of thread.
  • the unwinding of a full bobbin starts at the maximum winding speed and ends at a winding speed that is, for example, only half the start speed.
  • the winding speed curve can be linear, staircase-shaped or curved. The most appropriate curve is selected or determined for the respective yarn.
  • the aim is to keep the winding speed as high as possible without any disadvantageous values of the yarn tension increase being noticeable.
  • a convex course of the winding speed curve is the cheapest in terms of the effectiveness of the automatic winder. This means that the winding speed decreases slowly at first, then more rapidly at the end of the rewinding process. Under certain circumstances, however, the winding speed can also initially decrease more slowly, then more quickly and then again more slowly, or towards the end of the unwinding process, strive for a limit value or become constant. It is most advantageous if the winding speed is inversely proportional to the thread tension curve. By the adapted The winding tension is evened out, whereby the winding density of the cheese and the hairiness of the wound thread is evened out.
  • the size of the head profile and / or the weight of the head is measured and used as a measure for the amount of yarn or for generating the yarn amount signal.
  • the size of the head profile can, for example, be optoelectrically detected according to the shading principle or according to the reflection principle and converted into an electrical signal of the appropriate size. The greater the shade, the fuller the cop and the rewinding is started at the higher winding speed.
  • the weight of the requested cop can be determined using a scale. It can be a belt scale. It is therefore not necessary for the cop to be at rest during the measurement process. Since the core weight is known, the yarn weight is calculated from the gross weight minus the core weight.
  • the sensor detecting the amount of yarn in the cop is advantageously an optoelectronic or gravimetric sensor or a yarn tension sensor.
  • the yarn tension or yarn tensile force can be preset to a value by a thread brake arranged between the package and the bobbin, which is below the yarn tension that occurs at a constant winding speed after unwinding a maximum of about 4/5 of the yarn quantity of the bobbin between the bobbin and the thread brake or yarn tensile force, whereby a device which becomes active only after the preset yarn tension or yarn tensile force is exceeded is provided, which causes the winding device to reduce the winding speed in accordance with the amount of yarn in the bobbin and in accordance with a preselectable function of the control program manifested in the winding device.
  • the yarn tension is advantageously measured by a yarn tension sensor arranged between the thread brake and the package, the thread brake and the winding device being controllable in such a way that the yarn tension takes a predetermined course during the winding cycle.
  • a first control loop which controls the thread brake by reducing the braking force.
  • a second control loop is also provided, in which then the winding device can be adjusted to preselectable thread tension by reducing the winding speed.
  • a device for rewinding cops to cross-wound bobbins in an automatic winder which has a plurality of winding units, a controllable drive motor for driving the cross-wound bobbin and a bobbin feed device with a bobbin conveyor that supplies bobbins to each individual bobbin, is to be carried out of the method according to one of claims 1 to 13, characterized in that the drive motors have control devices, that each control device has a preselectable winding speed control program with a winding speed curve falling with the winding time, on which a start speed can be selected, from which the winding speed depends on the time
  • the course of the winding speed follows that the bobbin feed device has a yarn quantity measuring device which is passed through by the bobbin requested by the respective bobbin unit, or which the bobbin moves past, between there are operative connections between the yarn quantity measuring device and the control devices of the drive motors and that the control devices have means which adjust the starting speed of the respective drive
  • the yarn quantity measuring device consists of an optoelectric sensor working according to the shading principle or according to the reflection principle and / or a Kopswaage.
  • the automatic winder is designated by 1 in total. It has end frames, of which the front end frame 2 is shown. A dash-dotted line 3 indicates that the automatic winder 1 can have further winding units in addition to the winding units 7 to 11 shown. A traverse 4 connects the end frames to each other and carries the winding units.
  • winding unit 7 Some main parts of a winding unit will be explained in more detail using the example of winding unit 7:
  • the bobbin 7 consists in its main parts of a discharge point 17 for a cop 18, a drive roller 20 provided with a reversible thread groove for a cross-wound bobbin 21 and a yarn guide unit 26, which comprises various elements, for example yarn tensioner, yarn cleaner, splicing device, paraffinizing device, to only to name a few.
  • the bobbin delivery device 30 At the front end frame 2 there is a bobbin delivery device 30, the bobbin deposit 29, upon request from one of the winding units 7 to 11 or at the request of further bobbin units, one after the other depositing the respectively requested bobbin, for example bobbin 31, on a conveyor belt 32 running in the direction of arrow 28 , which serves here as a cop conveyor.
  • the upper run of the conveyor belt 32 slides along the crossbar 4.
  • the lower run is carried by belt rolls 25.
  • a control device 5 is located on the cop supply device 30, from which a collecting cable 19 leads from control lines to the individual winding units 7 to 11.
  • the control device 5 has a proximity sensor 44, which determines the passage of each cop 31 deposited on the conveyor belt 32 by the cop deposit 29.
  • the request for a new cop on the part of one of the winding stations is sent to the control device 5 via the collecting cable 19.
  • the control device 5 then issues a cop issuing command to the cop deposit 29 via an operative connection 63.
  • the control device begins 5 a time count especially for the requesting winding unit.
  • the control device 5 sends a switching command via the collecting cable 19 to an electromagnetic drive of a turnout, not shown here, for example the turnout 51 of the winding station 8 requesting, for example, which just needs a new cop. This ensures that each requesting winding unit receives the cop intended for it.
  • the switch 51 After receiving the switch 51 automatically resets.
  • the switch 51 is pivoted obliquely over the conveyor belt 32 in a known manner. The derived cop slides into the drain point 17 onto a pin 22 present there.
  • the control device 5 is provided with an optical and acoustic alarm device 40, which is intended to indicate a fault in the cop supply. There is an operative connection 41 from the belt drive motor 6 to the belt roller 42 of the conveyor belt 32.
  • each winding unit 7 to 11 there is a controllable drive motor 12 to 16 for driving the cheese 21.
  • the drive motors 12 to 16 have control devices 33 to 37.
  • Each control device 33 to 37 has a preselectable winding speed control program. 2 and 3, two of these control programs are shown graphically.
  • the control program according to FIG. 2 has a linear winding speed curve 45 falling with the winding time t.
  • the winding speed v is plotted on the ordinate.
  • the maximum possible cop weight is 170 g and the sleeve weight is 40 g.
  • the maximum winding time is 350 s.
  • Any start speeds can be selected on the winding speed curve 45, from which the winding speed follows the further course of the winding speed curve 45 as a function of time.
  • the winding speed control program according to FIG. 3 differs from the program according to FIG. 2 by a different course of the winding speed curve 46, which also has an influence on the respective remaining winding time.
  • the bobbin feed device 5, 29, 30, 32 has a yarn quantity measuring device 47.
  • the bobbin requested by the respective winding unit, for example the winding unit 8, for example the bobbin 31, passes the yarn quantity measuring device 47.
  • the yarn quantity measuring device 47 has a Kopswaage 43.
  • the Kopswaage 43 is designed as a belt scale.
  • the upper run of the conveyor belt 32 lies on the Kopswaage 43.
  • the Kopswaage 43 rests on springs 48 and 49, which are supported against a base 23.
  • the Kopswaage 43 is provided with a rod 24 pointing vertically downwards.
  • the switching element 27 of a switch 28 is connected to the rod 24 by a spring 38.
  • the switch 28 closes a circuit which is connected to the rod 24 by an electrical voltage source 52 via the switch 28, the line 53, the flexible line 57 connected slide 59, a sliding resistor 61, the line 54, a line selector 64 and the line 66 leads to a timing relay 65.
  • the drive roller 20' drives the cheese 21 'by friction.
  • the sliding resistor 61 is a wire resistor on which the slide 59 picks up more or less turns depending on the altitude.
  • the switching bridge 70 of the line selector 64 is set to the line which belongs to the winding unit requesting a cop. In the present case, this is the winding unit 8.
  • the switching bridge 70 can be changed automatically in a manner not shown here before the switch 28 is closed or before a cop lies over the cop scale 43.
  • the control devices 33 to 37 have means which determine the starting speed of the respective drive motor 12 to 16 according to a yarn quantity signal generated by the yarn quantity measuring device 47 based on measurements on the bobbin requested by the winding unit, for example the winding unit 8, for example on the bobbin 31 set, whereby the starting speed is lower the smaller the thread quantity signal.
  • the rod 24 moves vertically downwards, whereby the switch 28 is closed. However, the closed switch 28 allows the rod 24 to move further down.
  • the slide 59 assumes a position on the sliding resistor 61 which corresponds to the respective cop weight.
  • the switching bridge 70 has previously been placed on line 55. This already happened at the time when the winding unit 8 requested a cop. Depending on the position of the slide 59 on the sliding resistor 61 after the switch 28 is closed, more or less turns of resistance wire are tapped. From the constant voltage source 52, a more or less strong current flows through the timing relay 65 of the control device 33 via the line 56 to ground. As soon as the current flows, the timing relay 65 switches on a switch 71, which switches a fast-running motor 72 to a voltage source 75 via lines 73, 74. The switch-on time of the timer relay 65 depends on the current in the line 55. After the time has elapsed, the timer relay 65 switches the switch 71 off again.
  • the rotor of the high-speed motor 72 sits on a shaft 76, which is mounted in the control device 33 and carries an eccentric cam 77.
  • the outer edge of the cam disk 77 is designed according to the winding speed curve 45 of FIG. 2.
  • the fast-running motor 72 rotates the shaft 76 by an angle of rotation, the size of which depends on the respective head weight.
  • the cam plate 77 from its dash-dotted zero position 77 'out, for example, up to that shown in Fig. 4, the cop weight of the cop 31 corresponding position rotated with a solid line.
  • the rotor of a slow-running motor 79 is also seated on the same shaft 76, or the rotor of this motor is also connected to the shaft 76, for example via an overhaulable coupling.
  • the slow-running motor 79 - it can be a geared motor - can be connected to an electrical voltage source 87 via lines 80 to 82 and a switching element 84.
  • a two-armed scanning lever 88 which is pivotable about the pivot point 89, carries a scanning roller 90 at the upper end, which rests on the outer edge of the cam disk 77.
  • a spring 91 is also attached to the upper end of the sensing lever 88. It carries a switching plunger 92 which, in the position shown in FIG. 4, resiliently holds a microswitch 93 in the switched-on state.
  • the microswitch 93 is closed except for the zero position in all other positions of the cam plate 77. In the zero position 77 ', however, the force of the spring 91 is no longer sufficient to keep the microswitch 93 in the switched-on state.
  • the scanning lever 88 carries the slide 60 of a sliding resistor 62.
  • the slide 60 is connected to a flexible line 58 designed as a tension spring, which is connected to the drive motor 12 via a further line 94.
  • the tension spring 58 also serves to load the scanning lever 88, so that the scanning roller 90 always bears against the outer contour of the cam plate 77.
  • a line 95 leads from the sliding resistor 62 via a switch 86 and line 96 to a switching element 85. From there, a line 83 goes to line 82.
  • the switch 86 is opened, for example, with each thread break or with each thread cleaning process. It is otherwise closed as long as the automatic winder 1 is in operation.
  • the one in mass connected microswitch 93 is connected via a line 97, a switching element 99 and a line 98 to the switching coil of a contactor 100, the switching coil of which is also connected to the line 82.
  • a switching rod 101 made of insulating material of the contactor 100 carries the three switching elements 84, 85 and 99, which are always switched on and off together.
  • 4 shows in the control device 34 the switching elements 84, 85 and 89 as well as the switches 71 and 86 in the switched-off state, the microswitch 93 in the switched-on state. 4 shows the switch 28 in the switched-on state and the line selector 64 on the line 66 in the yarn quantity measuring device 47.
  • the line selector 64 can be set manually or automatically on the winding unit requesting a cop or on the line leading to the winding unit.
  • the line selector 64 can also be replaced by a number of individual contactors corresponding to the number of winding positions.
  • the switching rod 101 of the contactor 100 can be actuated either by its coil, by hand or by the plunger moving back and forth of an electromagnet (not shown here), which is actuated briefly when the winding unit needs a cop, so that all three switching elements 84, 85 and 99 are closed.
  • the switch 86 can be switched on and off manually or by means of a yarn cleaner, not shown here. In normal operation, switch 86 is closed.
  • the cam 77 is after unwinding a cop in the position 77 'and in this position the microswitch 93 is open so that the switching coil of the contactor 100 is de-energized and thereby the switching elements 84, 85 and 99 automatically get into the open position shown in FIG. 4.
  • Fig. 1 shows that at the winding unit 8 a cop has expired and that the sleeve of the expired cop has already been removed.
  • the winding unit 8 now causes the control device 5 via the control line 19 to deliver a cop from the cop delivery device 30 via the cop deposit 29 onto the running conveyor belt 32.
  • the line selector 64 is placed on the line 66 leading to the control device 34. As mentioned above, this can be done automatically, for example by means of a pulse switching mechanism, not shown here, which switches the switching bridge 70 step by step.
  • the switch 28 Since the switch 28 is initially still open, nothing changes in the switching state until, for example, the cop 31 is transported over the scale 43. Now the scale swings out, closes the switch 28, at the same time briefly sets the sliding resistor 61 to a certain resistance value corresponding to the weight of the cops and thereby causes the timing relay 65 to keep the switch 71 switched on until the fast-running motor 72 moves the cam disk 77 in has rotated the position shown in Fig. 4. Since the cam 77 embodies the winding speed control program according to FIG. 2 and the bobbin weight should be 100 g, the starting speed III is selected. Instead of a maximum possible winding speed of 1,100 m / min, unwinding will start at a starting speed of around 780 m / min. The winding time will not take a maximum of 350 s, but only about 210 s.
  • the winding speed curve 45 runs in a straight line from 400 to 1,100 m / min.
  • Four selected starting speeds I to IV are shown on this straight line, which lead to cop weights of 160, 120, 100 and 80 g, corresponding to yarn weights of 120, 80, 60 and 40 g.
  • the associated start speeds are 1,000, 850, 775 and 700 m / min.
  • the zero point of the runtime is a cop weight of 30g, which is 10 g less than the actual cop weight of 40 g. This ensures that a cop is actually completely wound up.
  • the winding time extends 10 s beyond the point in time at which the cop is completely processed by calculation. After the remaining time, the cam 77 is in the zero position 77 'according to FIG. 4th
  • the time relay 65 has been switched on for the time corresponding to the cop weight and the motor 72 has rotated the cam plate 77 accordingly, the cop 31 moves on to the requesting winding unit, and there it becomes by opening a switch derived from volume 32.
  • this is the switch 51 which opens so that the cop slides down onto the pin 22 at the outlet 17.
  • the end of the yarn is held.
  • the example of the winding unit 7 shows that the yarn 102 runs over the yarn guide unit 26 and the drive roller 20 to the cheese 21.
  • the connection of the new yarn end with the yarn end 103 of the cheese 21' is made.
  • a yarn cleaner (not shown here) or the yarn connection device (not shown here) first switches on the switch 86 mechanically, if it was previously switched off, and also mechanically actuates the shift rod 101 by briefly shifting it to the right, so that all three switching elements 84, 85 and 99 close.
  • the switching element 84 switches on the slowly running motor 79, so that from now on the cam 77 rotates slowly in the direction of the arrow 103, namely to its zero position 77 'corresponding to the predetermined remaining time.
  • the switching rod 101 is actuated only briefly, but the switching element 99 closes, which serves as a holding contact for the switching coil of the contactor 100.
  • the contactor 100 can then only be switched off by the microswitch 93, and this only occurs after the cam disk 77 has rotated.
  • the drive motor 13 receives current from the voltage source 87 via the sliding resistor 62 in accordance with the resistance tapped there. It starts at the intended starting speed and continuously reduces its speed in accordance with the further increasing resistance of the sliding resistor 62.
  • the yarn runs out of the cop 31 and Absence is found in the yarn guide unit 26 '.
  • the existing yarn monitor or yarn cleaner first opens the switch 83, whereby the drive motor 13 comes to a standstill and then the cheese 21 'is brought to rest.
  • the motor 79 runs for about 10 s longer until the scanning roller 90 jumps to the zero position, whereby the microswitch 93 is switched off.
  • the switching coil of the contactor 100 is no longer flowed through by current, so that the switching rod 101 falls back to the left and all switching elements 84, 85 and 99 open. Reconnection is now prevented by opening the holding contact. A new cop can be requested and the processes are repeated.
  • the winding speed runs according to the winding speed curve 46 according to FIG. 3.
  • the starting speeds V to VIII likewise relate to the bobbin weights 160, 120, 100 and 80 g.
  • the starting speeds of the The height is differently staggered, they range from 1,000 m / min to 940 m / min to 780 m / min and are therefore at a higher level overall than the starting speeds according to FIG. 2.
  • the switching element 85 is bridged by a switch 105, which can be actuated, for example, by a thread monitor or thread cleaner, until the signal "thread missing" occurs. This ensures that the yarn is safely unwound with minimum spooling time.
  • an optoelectric sensor 104 which detects the passing cops by measuring technology, can be arranged instead of the cop scales 43, the head signal of which, for example, acts on a servomotor which adjusts the slide 59 of the sliding resistor 61 in accordance with the amount of yarn.
  • the optoelectric sensor 105 is arranged to generate a signal when there is only a third or less of the normal yarn package on the sleeve of the bobbin to be unwound.
  • the signal is fed to the control device 34, which specifies a corresponding control of the drive motor 13.
  • a controllable thread brake 107 is provided between the cop 18 of the winding unit 7 and the package 21 of the same winding unit, the actuating element 108 thereof, a solenoid, through a line 109 to the thread tension sensor 110 between the thread brake 107 and the package 21 arranged thread tension sensor 111 connected.
  • the thread tension sensor 110 is connected to the control device 33 of the drive motor 12 by a line 112. From 111 to 107 there is a first, from 111 to 112 and 21 a second control loop.
  • the drive motor 12 is set to the maximum predetermined winding speed and the thread brake 107 to a suitable braking force, which is measured at the measuring location 111 as a corresponding thread tension.
  • the yarn tension is adjusted to a constant value with the aid of the first control loop, without any change in the winding speed.
  • the braking force of the thread brake 107 is gradually reduced until it is finally out of function. If the yarn tension then rises because the cop 18 has been unwound to at least 2/3, the winding speed is reduced more and more with the help of the second control loop in order to continue to keep the yarn tension at a constant value.
  • the result is a winding cycle at the highest possible speed level using a thread brake or a thread tensioner.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Textile Engineering (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
EP88115259A 1987-10-05 1988-09-17 Méthode et dispositif pour égaliser la tension du fil pendant le rebobinage d'une cannette sur une bobine croisée Expired - Lifetime EP0311815B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3733597 1987-10-05
DE19873733597 DE3733597A1 (de) 1987-10-05 1987-10-05 Verfahren und vorrichtung zum umspulen von kopsen
DE19873734395 DE3734395A1 (de) 1987-10-10 1987-10-10 Verfahren und vorrichtung zum vergleichmaessigen der garnspannung beim umspulen eines kopses auf eine kreuzspule mittels einer spuleinrichtung
DE3734395 1987-10-10

Publications (3)

Publication Number Publication Date
EP0311815A2 true EP0311815A2 (fr) 1989-04-19
EP0311815A3 EP0311815A3 (en) 1989-05-10
EP0311815B1 EP0311815B1 (fr) 1992-06-03

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Application Number Title Priority Date Filing Date
EP88115259A Expired - Lifetime EP0311815B1 (fr) 1987-10-05 1988-09-17 Méthode et dispositif pour égaliser la tension du fil pendant le rebobinage d'une cannette sur une bobine croisée

Country Status (2)

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EP (1) EP0311815B1 (fr)
JP (1) JPH01231769A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691298A1 (fr) * 1994-07-06 1996-01-10 SAVIO MACCHINE TESSILI S.r.l. Procédé pour la régulation automatique de la tension du fil dans un bobinoir
EP2664572A3 (fr) * 2012-05-18 2014-06-18 Murata Machinery, Ltd. Dispositif d'enroulement de fil et procédé d'enroulage de fil
CN104709770A (zh) * 2013-12-16 2015-06-17 索若德国两合股份有限公司 操作络筒机的方法以及络筒机

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JPH03249067A (ja) * 1990-02-23 1991-11-07 Murata Mach Ltd パッケージの巻取方法
JP2011105460A (ja) * 2009-11-18 2011-06-02 Murata Machinery Ltd 糸巻取機
JP2018090379A (ja) * 2016-12-02 2018-06-14 村田機械株式会社 自動ワインダ、糸巻取システム及び糸巻取方法
CN110884100A (zh) * 2019-11-25 2020-03-17 陈金招 一种用于制造纤维球的绕球机

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EP0064579A1 (fr) * 1981-05-08 1982-11-17 Toray Industries, Inc. Bobinoir pour fil textile
EP0165511A2 (fr) * 1984-06-19 1985-12-27 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Dispositif pour bobiner un fil livré à vitesse constante sur une bobine conique
WO1986000605A1 (fr) * 1984-07-02 1986-01-30 White Frances H Procede et appareil de bobinage
EP0237892A1 (fr) * 1986-03-17 1987-09-23 Schweiter Maschinenfabrik A.G. Procédé et dispositif pour rebobiner des fils
EP0287892A2 (fr) * 1987-04-16 1988-10-26 Hitachi Metals, Ltd. Lubrifiant synthétique pour la lubrification en film fin et support d'enregistrement magnétique

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Publication number Priority date Publication date Assignee Title
EP0064579A1 (fr) * 1981-05-08 1982-11-17 Toray Industries, Inc. Bobinoir pour fil textile
EP0165511A2 (fr) * 1984-06-19 1985-12-27 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Dispositif pour bobiner un fil livré à vitesse constante sur une bobine conique
WO1986000605A1 (fr) * 1984-07-02 1986-01-30 White Frances H Procede et appareil de bobinage
EP0237892A1 (fr) * 1986-03-17 1987-09-23 Schweiter Maschinenfabrik A.G. Procédé et dispositif pour rebobiner des fils
EP0287892A2 (fr) * 1987-04-16 1988-10-26 Hitachi Metals, Ltd. Lubrifiant synthétique pour la lubrification en film fin et support d'enregistrement magnétique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691298A1 (fr) * 1994-07-06 1996-01-10 SAVIO MACCHINE TESSILI S.r.l. Procédé pour la régulation automatique de la tension du fil dans un bobinoir
US5676329A (en) * 1994-07-06 1997-10-14 Savio Macchine Tessili S.R.L. Method for the automatic regulation of the thread tension in a bobbin-winding machine
EP2664572A3 (fr) * 2012-05-18 2014-06-18 Murata Machinery, Ltd. Dispositif d'enroulement de fil et procédé d'enroulage de fil
CN104709770A (zh) * 2013-12-16 2015-06-17 索若德国两合股份有限公司 操作络筒机的方法以及络筒机
EP2883825A1 (fr) * 2013-12-16 2015-06-17 Saurer Germany GmbH & Co. KG Procédé de fonctionnement d'un bobinoir et bobinoir
CN104709770B (zh) * 2013-12-16 2017-05-31 索若德国两合股份有限公司 操作络筒机的方法以及络筒机

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Publication number Publication date
EP0311815A3 (en) 1989-05-10
JPH01231769A (ja) 1989-09-18
EP0311815B1 (fr) 1992-06-03

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