EP0415290B1 - Procédé pour la commande de la vitesse de travail d'un métier à piler à anneaux - Google Patents

Procédé pour la commande de la vitesse de travail d'un métier à piler à anneaux Download PDF

Info

Publication number
EP0415290B1
EP0415290B1 EP90116285A EP90116285A EP0415290B1 EP 0415290 B1 EP0415290 B1 EP 0415290B1 EP 90116285 A EP90116285 A EP 90116285A EP 90116285 A EP90116285 A EP 90116285A EP 0415290 B1 EP0415290 B1 EP 0415290B1
Authority
EP
European Patent Office
Prior art keywords
yarn
spinning
robot
breakages
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.)
Expired - Lifetime
Application number
EP90116285A
Other languages
German (de)
English (en)
Other versions
EP0415290A1 (fr
Inventor
Markus Erni
Reinhard Oehler
Urs Dr. Meyer
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter 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
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0415290A1 publication Critical patent/EP0415290A1/fr
Application granted granted Critical
Publication of EP0415290B1 publication Critical patent/EP0415290B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/32—Driving or stopping arrangements for complete machines
    • D01H1/34—Driving or stopping arrangements for complete machines with two or more speeds; with variable-speed arrangements, e.g. variation of machine speed according to growing bobbin diameter

Definitions

  • the present invention relates to a method and a device for regulating the operating speed of a spinning machine, in particular a ring spinning machine with a plurality of spinning positions on which yarn can be produced, the yarn breaks occurring being determined and the speed of the spindles of the spinning positions depending on the number of occurring thread breaks per unit time is regulated.
  • a method of this type is known from DE-AS 21 40 067 and from DE-OS 2 336 081.
  • the method just described is based on the consideration that the yarn production of an intact thread point increases with increasing working speed, but on the other hand also the thread break frequency and thus the temporary failure of individual spinning points.
  • the method described one wants to put himself in a position to always automatically maintain a state of the thread break frequency, once these two opposing influences have been weighed as being correct in the sense of optimal yarn production.
  • This also takes into account the fact that a yarn break condition which provides optimum yarn production depends on the type of material being processed, in particular but also depends on the state of the bobbin formation at the individual spinning positions.
  • the object of the present invention is to design a method or a device of the type mentioned at the outset in such a way that a production yield which is close to the maximum of the achievable economic yield is obtained without a significant increase in the cost of the ring spinning machine, taking into account all essential factors .
  • the procedure is such that the thread breakage repair capacity actually present or a value corresponding thereto is determined such that a target specification for the speed of the spindles is dependent on the number of thread breaks determined per unit of time and the actual value existing thread breakage capacity is determined, and that the operating speed of the spinning machine is controlled in such a way that a maximum of production is achieved.
  • the setpoint for the speed is preferably determined by correcting a fixedly specified speed setpoint profile, which represents a basic value for the speed as a function of the spinning scope build-up cycle, with a correction value which is calculated from the number of thread breaks occurring per unit of time and the thread breakage removal capacity actually present .
  • the correction value is preferably determined on the basis of a simulation with a variant calculation, the simulation being optimized for the best efficiency.
  • the thread breakage repair capacity for both ring spinning machines must be set to 30 per hour. Since the operator gets tired in the course of the shift, one can also take into account, for example, that the thread breakage repair capacity decreases over the course of the shift, for example linearly reduced from 60 to 40 thread breaks per hour.
  • the method according to the invention is particularly easy to handle if the removal of the thread breaks is carried out by at least one robot or automatic thread applicator.
  • the thread breaking capacity of the operating robot is usually determined, it depends on it Construction. However, it can happen that, for example, two operating robots, possibly with different thread breakage repair capacities, are used on the same ring spinning machine, or that one or more operating robots fails temporarily due to mechanical damage.
  • the thread breaks that are determined are preferably classified into at least two classes, namely thread breaks that are statistically distributed over time and into other thread breaks that form the base, the base, for example, from the number of spinning positions with thread breaks occurring above average and from the number of Spinning stations that are defective exist, the defective spinning stations being, for example, those where there are windings, the ring traveler is missing, a sliver break is present or those are damaged, and are therefore registered as thread breaks that cannot be repaired by the robot, and that the target specification for the The speed of the spindles is determined as a function of the time-statistically distributed yarn breaks per unit time and the actually existing yarn break removal capacity for such yarn breaks.
  • This method of operation takes into account that, according to the invention, primarily an operating robot for eliminating thread breaks, ie spontaneous, statistically distributed thread breaks should be used, but not for the more complicated tasks, such as the repair of mechanical, damaged spinning positions or for the replacement of a worn ring traveler or the repair of a match break. Such tasks are preferably still carried out by the operator or by specialists or they are taken over by other machines.
  • the thread breakage capacity is preferably given in the form of an average waiting time until the robot can fix a thread break, while the number of determined thread breaks per unit time is treated as a reciprocal value, i.e. the mean time available to remedy a thread break, and in this case the correction value mentioned is calculated from the reciprocal value and the mean waiting time until a thread break is remedied with the aid of a control algorithm.
  • a reciprocal value i.e. the mean time available to remedy a thread break
  • This can also be a control algorithm according to the PID control method.
  • both the actually existing manual operating capacity and the actually existing robot capacity for eliminating thread breaks is taken into account when simulating the overall system of the ring spinning machine in order to determine a speed value that is optimized for the best efficiency.
  • the available capacity of both the manual operation or the otherwise available automatic repair machines, as well as the robot is fully exhausted, so that the ring spinning machine with the given capacities achieved a maximum of production.
  • the information about the thread breaks determined is statistically evaluated, the cadence of the thread breaks distributed over time, based on the phase of the spinning head formation, is determined and the predetermined speed setpoint profile is corrected accordingly. This results in a corrected speed setpoint profile that differentiates strongly between the individual phases of the scope build cycle. If, for example, the statistical evaluation of the thread break information shows that an increased number of statistically distributed thread breaks occurs during the start-up phase, i.e. at the beginning of the scope build cycle, the speed setpoint profile for this phase is corrected, for example in such a way that the inclination of the profile becomes less steep and therefore lasts a little longer until the plateau area is reached.
  • This correction of the speed setpoint profile enables a very sensitive adjustment of the profile to the respective machine and to the respective fiber mixture or thread type and / or thread number.
  • the control process can be operated according to a kind of self-learning system, which means that when changing to another thread type or thread number, the basic setting of the ring spinning machine is based on a Corrected speed setpoint profile already saved can be made for this other thread type or thread number.
  • the thread breaks determined are subdivided into thread breaks distributed over time and thread breaks belonging to the base preferably by the robot attempting to remedy this thread break when a thread break occurs, the thread break initially being considered as a statistically distributed thread break in the event of success and in the case of a break Failure is classified as a thread break that cannot be rectified by the robot and belongs to the base.
  • the statistics can be used, for example, to detect frequent thread breaks at certain ring spinning positions, from which it can be concluded that there is mechanical damage here, for example that the associated ring traveler is worn out. This means that in the event of repeated thread breaks at the same spinning position within a certain time interval, the thread breaks are no longer initially regarded as statistically distributed thread breaks, but as base thread breaks. The spinning station in question is then in a list of those requiring maintenance Spinning positions entered and will be repaired by the operator over time.
  • the method according to the invention can be used particularly advantageously with an operating robot that patrols along the spinning machine or ring spinning machine, determines the yarn breaks to be repaired during a run, which have arisen since its last run and only tries the new yarn breaks during the subsequent run to be remedied, while the thread breaks that have arisen since the last run are simultaneously determined, but are not remedied, this work cycle is repeated continuously and the operating robot reports the thread breaks it has recognized and corrected, as well as the thread breaks that have not been remedied to the control system.
  • the present invention also includes a method for Operation of a spinning machine, in particular a ring spinning machine with a large number of spinning positions at which yarn can be produced and thread breaks occur during operation, the method being characterized in that the spinning points at which thread breakage is indicated are examined to determine the base thread breaks, i.e. the Determine thread breaks that are not statistically distributed over time.
  • FIG. 1 shows a side view of a ring spinning machine 10, which has a head part 12 and a foot part 14. Between the head part 12 and the foot part 14 are on both On the side of the machines, only one of which can be seen in FIG. 1, a series of individual spinning positions, which are usually present today in the number from 500 to 600. For the sake of illustration, however, only seven such spinning positions are shown in FIG. 1, in fact the distance between the head part and the foot part 14 is much larger.
  • Each spinning station, for example 16 serves to draw roving 20 coming from a roving spool 18 in a drafting device 22 and to wind the drawn yarn on a spinning tube 26 by means of a ring traveler 24.
  • the resulting package 28 is built up in a known manner from below on the spinning sleeve 26 and results in the so-called spinning cop.
  • the spinning sleeve 26 is driven by a spindle 30 for a rotary movement.
  • the drawn roving passes through a yarn guide 32 and a so-called anti-balloon ring 34 to the ring traveler 24, which is caused to rotate on an annular path 36 due to the rotating movement of the spinning cop, whereby the drawn roving undergoes a rotation that produces its strength.
  • the spindles 30 are driven in pairs by revolving belts 38, which run in the direction of the arrow 40, for rotary movement.
  • the spindles 30 themselves are rotatably mounted in a crossbar 42 of the ring spinning machine.
  • the ring tracks 36 are located on the so-called ring bench 44 which, in a manner known per se, executes a steady upward lifting movement when it forms the spinning cops and an oscillating movement superimposed thereon.
  • the roving 20 runs through a respective funnel 46 at each spinning station, the funnels 46 being mounted on a rail 48 which carries out an oscillating back and forth movement in the direction of the double arrow 50.
  • the roving 20 then runs by a so-called roving stop device 52.
  • roving stop devices also known as sliver stop devices, are well known and can be operated to break off the roving 20 and thus to stop the supply of material to the respectively assigned drafting system 22.
  • the drafting system which is also very well known and can be seen in a side view in FIG. 3, is driven by three driven shafts 54, 56 and 58, these shafts extending over the entire length of the ring spinning machine and usually being driven on both end faces to prevent excessive shaft rotation.
  • Beneath each drafting system is a suction nozzle 60 which, in the event of a thread break, sucks the fiber sliver produced by the drafting system, thus keeping the machine clean and largely preventing the formation of unwanted fiber coils around the individual rollers of the drafting system.
  • the left spinning station 16 on the right side of the machine is shown as if a thread breakage existed, the stretched fiber sliver running into the corresponding suction nozzle 60.
  • the roving bobbins 18 are arranged as usual on rails above the ring spinning machine and can be replaced, for example.
  • the roving 20 coming from the bobbins 18 is deflected via deflection rails such as 62, for example, before it runs into the funnel 46.
  • the ring spinning machine as far as described so far, is known per se in practice.
  • Two rails are mounted on this ring spinning machine, namely an upper guide rail 64 and a lower guide and positioning rail 66, both of which extend at least essentially over the entire length of the ring spinning machine extend and serve to carry and guide an operating robot 68 and enable it to be precisely positioned.
  • the operating robot 68 can be moved in the direction of the double arrow 70, specifically by means of a motor 74 flanged to the frame 72 of the operating robot, which, as can also be seen in FIG. 2, drives wheels 76 that can be rolled on the lower rail.
  • the power supply to the drive motor 74 and the other electrical and electronic parts of the operating robot takes place via the line 75, 77, which are in contact with current paths 79, 81 in the rail 66 via sliding contacts (not shown).
  • an attaching machine 80 which is arranged to move up and down in accordance with the double arrow 83.
  • the batching machine 80 is guided on two vertically extending rods 82 and 84.
  • the rod 82 is a pure guide rod, but the rod 84 is designed as a threaded spindle and can be driven by a motor 86.
  • the threaded spindle 84 runs within a ball nut attached to the automatic attachment 80 and thus forms the drive for the automatic attachment 80.
  • a first light barrier 88 which is the edge of the ring rail 44 detects and sends control signals to the drive motor 86 via the computer installed in the frame 72, so that the automatic attachment 80 always follows the movement of the ring rail.
  • limit switches 90 and 92 are furthermore attached at the top and bottom, which determine the upper and lower limits of the displacement path of the automatic attachment machine.
  • the automatic attachment has a further light barrier 94. It detects the yarn at the outlet of the drafting system and in this way determines whether there is a thread break or not.
  • the piecing machine 80 also carries a supply spool 96 for foreign thread 98 for the piecing process described later.
  • the foreign thread 98 is introduced by this bobbin 96, which can also be any spinning cop, into a holding chamber 100 which is equipped with a separating knife 102.
  • a winder 104 Above the chamber 100 there is a winder 104 which can be advanced in the direction of the double arrow 106 until its U-shaped front end 108 engages around the spinning cop.
  • the front of winder 104 is shown on a large scale in plan view in FIG. 4 and in side view in FIG. 5.
  • a slotted ring 110 which is rotatably guided by the winder 104, is located within the U-shaped opening of the winder 104.
  • the ring 110 is driven by two pinions 112 spaced apart from one another, only one of which can be seen in FIG. 4.
  • the purpose of these two pinions is to ensure that the ring 110 is always in drive with at least one of the pinions.
  • the drive motor for the pinion 112 is also not shown here for the sake of simplicity.
  • a pin 114 with a button-like head 116 is mounted in the ring 110.
  • the pin 114 can be pressed down by a lever 118 and an electromagnet 120 in the direction of the arrow 122 in order to push the head 116 away from the underside of the ring.
  • the foreign thread as will be described later, can be held between the head 116 and the underside of the ring 110.
  • a holding member 124 which is also adjustable in the direction of arrow 106 and which can be advanced independently of the winder 104 by a separate drive in order to position the foreign thread.
  • a brush 111 attached to it.
  • an arm device consisting of a shoulder 123, an upper arm 126, a forearm 128 and a hand 130 which carries a suction pistol 132.
  • the axes 134, 135 and 136 enable targeted movements of the suction gun 132, as will be described in more detail below.
  • a separate motor is provided for each axis 134, 135 and 136, these motors not being shown for the sake of simplicity. However, these motors allow targeted positions of the shoulder, arm and hand parts of the arm device around the corresponding axes.
  • hose 140 At the end of the suction gun 132 facing away from the winder 104 there is a hose 140 which is bent approximately in a U-shape and is connected to a suction source 142 at its end remote from the suction gun. Another light barrier is located within the suction source 142 144.
  • a brake device is fastened to the frame 72 below the automatic attachment machine with an arm 146, which serves to decouple the spindle from the drive belt 38 and to brake the individual spindles.
  • the adjustment mechanism for the brake arm 146 is not shown here for the sake of brevity.
  • the brake arm 146 is controlled so that it can perform the following movements. First of all, it should be said that the arm 146 has at its front end an upstanding brake shoe, which is not shown in FIG. 2, but is arranged between the pairs of spindles 13, within the loop of the drive belt 38. This brake shoe therefore stands 2 vertically upwards in the drawing according to FIG.
  • the brake arm 146 can be pulled in the direction of arrow 148 and simultaneously pivoted to the left or right in Fig. 1, i.e.
  • the suction gun 132 is moved from the point shown in FIG. 2 to the exit hole 152 of the foreign thread chamber 100 brought, whereby the suction air from the suction source 142 sucks the foreign thread into the suction gun and into the pipe 140 until the foreign thread end is detected by the light barrier 144.
  • the foreign thread 98 can now be clamped (but not yet cut through), for example by the delivery system, which pulls the foreign thread from the supply spool 96.
  • the suction gun 132 now moves around the front of the winder 104 to the other side of the foreign thread chamber 100.
  • the foreign thread is brought into the area of the button 116 by this movement, which is now pressed down by means of the electromagnet 120 and the lever 118.
  • the electromagnet 120 is set in the de-energized state, as a result of which the pin 114 moves up again due to a built-in spring (not shown), and which the end of the foreign thread chamber 100 facing Holds foreign thread.
  • the knife 102 is now operated to separate the foreign thread from the supply spool.
  • the brake arm 146 is now actuated so that the drive 38 is decoupled from the spindle 30.
  • the winder 104 moves up to a position above the top position of the ring bench and then forward until the spinning cop is within the U-shaped opening of the winder.
  • the ring 110 is now driven to rotate about the ring axis, as a result of which the foreign thread, pulled by the pin 114, lies around the spinning head mounted on the freely rotatable spindle 30 and the resulting friction is finally sufficient to close the spindle turn, whereby the foreign thread is pulled out of the tube 140 and windings arise on the spinning cop.
  • the suction gun 132 moves due to the preprogrammed movements of the arm device, so that a cross turn occurs; then another, for example four windings are placed around the spinning cop, and the suction gun moves up again.
  • one end of the foreign thread is now wrapped around the spinning head.
  • the holding member 124 is now pushed forward, i.e. to the right in Fig. 2 to prepare the foreign thread for threading.
  • the brake arm 146 is pushed forward to now stop the spindle.
  • the suction gun 132 is moved into a position where the foreign thread, which is still partially inside the tube 140, runs obliquely downwards and tangentially to the ring path.
  • the ring traveler is now rotated on the ring track 36 by means of the brush 111. He moves over the foreign thread and this is threaded into the ring traveler.
  • the holding member 124 is withdrawn and the suction gun 132 is raised up to the balloon ring 34 by changing the geometry of the arm device.
  • the foreign thread is controlled by specific movements of the suction gun 132 (caused by specific movements of the arm device) such that the foreign thread is threaded through the insertion slot 154 of the anti-balloon ring 34.
  • the attaching machine then moves upward and the suction gun is again controlled so that the foreign thread is threaded through the threading slot 156 of the thread guide 32.
  • the attaching machine is then moved further upward and the arm device is stretched so that the tip of the suction gun assumes the position shown in FIG. 2 with 132.1.
  • the foreign thread now comes to rest on the front side of the upper roller 158 of the pair of rollers on the feed side of this pair of rollers.
  • the drive of the spindle 30 and thus the spinning cop 26 is now picked up and at the same time a targeted movement of the suction gun in the axial direction of the delivery cylinder is carried out.
  • the foreign thread is gripped by the stretched roving executing a traversing movement and twisted with it, so that a connection is created between the foreign thread and the stretched roving.
  • the newly spun yarn is then wound over the foreign thread on the spinning head 26 in the usual manner.
  • the repair of the thread break ie the preparation process, is now over.
  • the light barrier 94 is now used to check whether the thread and therefore the ring traveler 24 runs normally. If this is not the case, then this is a clear indication that there is an error of some other kind that cannot be remedied by the operating robot.
  • the roving stop device 52 is actuated by the operating robot, for example in a manner known per se by means of a compressed air blast, whereby the further supply of roving to the drafting system 22 is prevented.
  • a lever 160 of the roving stop device 52 folds up, the reflecting end 162 of which is regarded by the operator as an indication of a defective spinning position, so that the necessary corrective measures can be taken.
  • the operating robot 68 also carries a further light barrier 164 which, as the operating robot passes, can determine whether such levers 160 are folded up. If the operating robot 68 determines that this is the case at a specific spinning position, then it knows that it cannot remedy this thread break.
  • the attaching machine 80 detects the upper edge of the ring bench 44 via the light barrier 88, and it is always held at a height corresponding to the respective uppermost position of the ring bench. While a thread break is being repaired, however, the piecing machine remains largely at a constant height during the winding on the spinning cop, but moves up slightly to form the cross-windings on the thread tube (approximately 5 mm). Only when the foreign thread is threaded in by the ring traveler does the automatic piecing machine move with the holding member 124 downward, so that the holding member comes near the ring rail 36 but does not touch it. This downward movement is also controlled by the light barrier 88, starting from the previous position, which corresponds to the uppermost position of the ring rail.
  • the long leg 66 of the guide and positioning rail 66 has two holes 166, 167 aligned with each spinning position, which are detected by two correspondingly arranged inductive sensors 170, 172 and ensure the exact positioning of the operating robot 68.
  • the rail 66 On its upper short leg, the rail 66 has elongated holes 174 and 176 at both ends. To scan these slots, i.e. To detect, the frame 72 carries a further inductive sensor 177. When the hole 174 or the hole 176 is detected, the operating robot 68 knows that it is at the end of its working area on the machine head 12 or at its reversal point on the machine base 14 and guides one appropriate braking process so that it comes to a standstill at the respective end of the rail 66.
  • the operating robot is positioned exactly opposite the machine head at the end of its working area, so that information can be transmitted from the operating robot to the machine head or from the machine head to the robot.
  • each inductive sensor forms part of an oscillating circuit, with a change in the inductance of the oscillating circuit due to the arrangement of the holes, which leads to a change in the oscillation amplitude, which leads to the generation of the actuating signals or the determination of the exact position of the operating robot 68 is used.
  • two operating robots 68 of exactly the same design can use the same side of the ring spinning machine serve.
  • a slightly modified rail 66.1 is used, the arrangement of the holes on the left end of the rail being symmetrical to the hole arrangement on the right end of the rail, as a result of which the two rail ends determine the ends of the respective working areas of the two operating robots. That is, the left robot 28 stops at the machine base at the end of its working area, while the right robot 68 stops at the machine head 12 at the end of its working area.
  • Each operating robot carries respective light barriers 186, 188 on the left and right, the left and right light barriers 186, 188 being displaced relative to one another on an operating robot 68 in the direction perpendicular to the plane of FIG. 3.
  • the light barrier 188 is on the right side of the left operating robot, opposite the retroreflector 192.
  • the retroreflector 190 of the left operating robot 68 of FIG. 3 lies behind the light barrier 186 on the left side of the right operating robot 68.
  • the operating robots can carry further light barriers on both sides, which serve for personal protection. For example, a certain spinning station may be repaired by an operator while the operating robot is approaching.
  • Such light barriers are also useful because an operating person can at any time cause an operating robot to make a reversing movement by bringing his hand in the area of the personal protective light barrier.
  • the operating robot is put into operation by placing it on the spinning machine and switching it on at some point.
  • the operating robot then reaches a longitudinal opening, for example the longitudinal opening 174 of FIG. 1, it knows that it is at the end of its working area.
  • the ring spinning machine itself gives the operating robot an enable signal, provided that a doffing process is not imminent or another obstacle is present.
  • the operating robot is informed in a first run about the operating behavior of the spinning stations, i.e. he remembers those spinning positions where there are no thread breaks, those spinning positions where there are thread breaks and possibly those spinning positions that have been put out of operation, which he can recognize from the levers of the roving stop devices.
  • the assignment of the thread breaks to the individual spinning positions is determined on the basis of the signals from the positioning devices, by passing the spinning positions, i.e. starting from the end of his working area, he counts the number of ring spinning stations on the basis of the signals from the positioning device and stores these numbers with the associated information about the operating state at the individual spinning stations.
  • the operating robot After reaching the reversal points on the machine base, the operating robot reverses.
  • the operating robot In the return run, he corrects the thread breaks found in the first pass and at the same time detects the spinning positions where new thread breaks have occurred after the first pass.
  • the operating robot After the return run has been completed and the resulting thread breaks have been rectified, the operating robot again reaches the end of its working area. He positions himself again at the start position and transmits the information he has stored regarding existing thread breaks, thread breaks he has repaired, thread breaks that he has not corrected, i.e. also spinning stations that he has stopped, to the ring spinning machine, and the corresponding data is saved Operating person displayed so that they can make the necessary interventions. At the same time, all this information is collected for operational statistics. The information can also be continuously transferred from the robot to the system via an optical serial ON-LINE connection.
  • the operating robot waits for an enable signal from the spinning machine at the end of its working area. As soon as he receives the corresponding release signal, he runs again in the direction of his reversal point and corrects the thread breaks found in the previous pass, at the same time detecting those thread breaks that have arisen in the meantime. At the reversal point he turns around again, the work cycle just described is repeated until the spinning heads are so full that a doffing operation is required. In this case, the operating robot is held by the ring spinning machine at the start position and the doffing process is carried out, in which the full spinning heads are exchanged for empty ones, but not when the operating robot is on the move.
  • the procedure runs essentially as described, except that no fixed reversal point is specified for each operating robot, but the reversal point is determined electronically each time the operating robot runs, depending on where the meet both operating robots.
  • the altitudes or the mutual distances between the antiballoon ring 34 of the thread guide 156 and the drafting system are the same for all common types, so that the relevant facts can be incorporated into the programming of the microprocessor of the operating robot.
  • Another possibility is to have the appropriate movements of the suction pistol and the attaching machine carried out manually by an operator after inserting the operating robot on the ring spinning machine, and the programming of the microprocessor can be such that the movements to be carried out by him from this movement learns. It would also be possible to read these movements into the microprocessor in the form of a program specific to a specific ring spinning machine or to use them in the form of a corresponding program module.
  • the operating robot remembers the newly formed thread breaks during a run and only corrects these thread breaks during the subsequent run, it is possible to have it patrolled at high speed along the ring spinning machine; a distance corresponding to twice the mutual distance from spinning positions is usually sufficient to brake the operating robot from its patrol speed to the crawling speed. At this creep speed, it automatically determines the exact positioning in relation to a specific spinning position using the two holes, as previously described.
  • Thread breaks are always corrected in order, but only those that were determined during the previous run of the operating robot.
  • FIG. 2 The shape of a partially wound spinning cop can best be seen in FIG. 2, where the resulting yarn package 28 can be seen on the spinning tube 26.
  • the combination of the package 28 with the spinning sleeve 26 forms the so-called spinning cop. 2, the package is still shown in its initial stage. In the case of the full spinning cop, the turns extend almost to the upper end of the spinning sleeve 26.
  • the spindle 30 carrying the spinning cops In order to produce the specific shape of the spinning cop and to be in accordance with the manufacturing process, the spindle 30 carrying the spinning cops must be driven according to an approximately predetermined speed profile, which in Fig. 6 is shown in more detail.
  • FIG. 6 shows the speed D of the spindle 30 as the abscissa and the height S of the ring bench as the ordinate.
  • the speed n is first increased rapidly until point 202 is reached.
  • This section concerns the formation of the so-called underwind crown, ie the start-up phase.
  • the speed is increased further from point 202 to point 204, however the speed setpoint profile runs with a much smaller gradient than in section 200 to 202.
  • the lower part of the spinning cop is already wound and this has approximately the shape , which is shown in Fig. 2, but wherein the upper conical part merges directly into the lower approximately hemispherical part without a cylindrical piece in between.
  • Point 204 represents the beginning of the plateau area that extends to point 206.
  • the cylindrical part of the spinning cop is formed in such a way that the ring bench 44 first moves upward and winds a conical layer of yarn turns on the already existing conical layer. Then the ring bench 44 moves down a little faster, so that some cross windings arise which firmly anchor the previous position. The ring bench then moves up again and another cone-shaped layer of windings is created, which is also anchored by the cross-wound layer underneath.
  • This structure of the spinning cop is particularly important in the subsequent rewinding; it is well known in practice.
  • the point 206 is somewhat higher in speed than the point 204. This can be explained by the fact that the yarn length between the antiballoon ring 154 and the ring traveler 24 is substantially shorter in the corresponding raised position of the ring bank, so that the yarn balloon is small in diameter or one has changed spinning geometry and can work at higher speeds with a constant yarn tension. From point 206, the speed of the full spinning cop initially decreases to point 208 and then further to point 210. The last windings, the so-called upper wind crown, are wound on the spinning cops that are being formed, and from point 210 the speed of the ring bank finally decreases rapidly, while the ring bank is lowered to the lowest position, so that one gets to point 212. Once point 212 is reached, a doffing process can be performed.
  • Points 202.1, 204.1 and 206.1 indicate that for different fiber compositions, i.e. Yarn types or yarn numbers can be worked with a different speed setpoint profile. Such profiles are usually permanently programmed into the computer control of the ring spinning machine.
  • FIG. 7 now shows, using a first example, how, with the aid of the attachment robot 80 and a predetermined speed setpoint profile 228 corresponding to FIG. 6 using a microprocessor controller 214, a speed control device 216 receives the respective speed setpoint Dsetpoint from the microprocessor controller 214 and the speed of the Spindle 30 of the ring spinning machine 10 controls according to this setpoint Dsetpoint.
  • the speed controller may also be part of the microprocessor controller 214.
  • the fixed speed setpoint profile is shown in an operator input field 218 of the microprocessor controller 214, specifically because the profile is entered by the operator.
  • the thread breaking removal capacity of the piecing robot 80 is specified via the operator input field 218, which is indicated schematically by the box 220.
  • the thread breakage removal capacity in the operating state is a fixed value, which is designated N2set in this drawing and is typically 100 thread breaks per hour.
  • This information is stored, for example, in a spinning station status memory 222.
  • the successfully eliminated thread breaks represent the time-statistically distributed thread breaks.
  • the number of spinning positions affected by thread breaks is indicated in the drawing according to FIG. 7 with N2.
  • the values for N2 are determined in the microprocessor 214 with the aid of conventional control algorithms, for example a proportional, differential, integral algorithm, taking into account the times in which they were created (which is known from the movement sequence of the piecing robot or the thread monitor) with the
  • the value N2 should be compared and, as is generally the case with control methods, a correction value N k is generated from this in the speed correction computer 224.
  • the correction value N k is then multiplied by a speed value from the fixed speed setpoint profile. This speed value from the speed setpoint profile is selected by the microprocessor according to the respective height of the ring bench.
  • the result of this multiplication which is carried out here schematically in the field 226, forms the target input Dsetpoint for the speed control device 216.
  • the detected thread breaks where the attaching robot has not yet attempted to correct these thread breaks, can initially be viewed in whole or in part as thread breaks that are statistically distributed over time, whereby older, statistically distributed thread breaks, i.e. thread breaks that lie further back, are not taken into account can.
  • the operating robot can also be equipped with various other sensors that provide further information about the type of socket thread breaks. For example, sensors can determine whether the fuse is missing, whether there are coils or whether the runner is missing.
  • the status information provided by the attaching robot is used to build up statistics which are specified in field 223 and indicate the individual sources of error, and information on how to remedy them. These statistics are usually displayed at least in part to the operator so that spinning stations in need of repair are promptly repaired.
  • FIG. 8 The schematic diagram of FIG. 8 is very similar to that of FIG. 7, which is why the same reference numerals have been used for similar parts.
  • the operator input field 218.1 contains two boxes, the lower box 228 containing a memory with the fixed speed setpoint profile corresponding to FIG. 6 and the upper box 220 indicating the actually existing removal capacity for speed-dependent thread breaks.
  • This is also a piecing robot 80, however, in contrast to the diagram in FIG. 7, the actually existing removal capacity is specified here as the average waiting time for the removal of a thread break by the robot. This value is identified in FIG. 8 with Tmsoll.
  • the microprocessor 214 is designed or programmed so that it continuously calculates a value for the actual mean waiting time Tm, to a spinning station having a thread break can be operated by the operating robot.
  • Tm the actual mean waiting time
  • the operating state of the robot is first taken into account via line 232. This determines whether the approach robot is operational or whether there is a fault that prevents the robot from being used.
  • this correction value Nk is multiplied by the respective speed setpoint from the lower field 228 of the input field 218.1 in order to generate the target input Dsoll for the speed controller device 216.
  • This simulation unit which also receives information on the existing removal capacity for thread breaks by the robot, then carries out a simulation of the overall system based on simulation with variant calculation, optimized for the best benefit, and determines an optimized speed Nopt for the best production performance of the overall system, consisting of a ring spinning machine + Robot + operator.
  • the simulation programs required for the variant calculation do not have to run particularly quickly since there is sufficient time for optimizing the overall system, ie a relatively small microprocessor is sufficient to carry out the simulation.
  • the computer uses a program to determine what the future state of the spinning machine will look like if the specified values are observed.
  • the computer takes into account the effects of various events or a doffing process or a power failure and also carries out a sensitivity analysis to see whether the individual variants could possibly lead to an undesired crash of the machine.
  • a speed correction value Nk is then determined from the value Nopt with the aid of conventional control algorithms and, as previously in connection with the embodiment variants according to FIGS. 7 and 8, a speed setpoint value Dsoll is determined by multiplying the correction value Nk by the respectively valid value of the speed setpoint value profile and supplied to the speed control device 216 which, as before, controls the speed of the ring spinning machine towards this target value.
  • FIG. 10 largely corresponds to that of FIG. 9, only here the statistics about the course of the process at the individual spinning positions are actively used during the operation of the ring spinning machine in order to correct the predefined speed setpoint profile and thereby keep the control deviations smaller.
  • the cadence of the time-statistically distributed disturbances is stored in a spinning station disturbance memory 242.
  • the average cadence and the phase-by-phase deviation from the average are then determined in a disturbance cadence optimization computer 244, the expression “in phases” referring here to the phase of the coping.
  • a correction value Npk for the target speed profile is calculated from this phase-wise deviation from the average and the average cadence, the value Npk being phase-related.
  • a corrected speed setpoint profile is generated, which is then used to determine the speed setpoint Dsetpoint instead of the fixedly specified speed setpoint profile.
  • the speed setpoint profile in this area is changed so that the speed increases less rapidly, from which it can be expected that the deviation the statistically distributed thread breaks from the average in this area becomes smaller.
  • This in turn means that the correction value Nk gets closer to 1, so that the control deviation becomes smaller overall.
  • the correction of the speed setpoint profile with the value Npk is of course not limited to the start-up phase, but is used in all phases if there is a phase-by-phase deviation from the average.
  • spinning positions are also separated out, at which, for example, frequent thread breaks occur, but which always prove to be remediable by the attaching robot. If such increased thread breaks occur at certain spinning positions, this should be regarded as an indication that, for example, the ring traveler is damaged at this point and must be replaced. In any case, the increased occurrence of thread breaks at certain spinning points indicates technical defects that have to be remedied, i.e. to defective spinning positions, where thread breaks should not be considered as statistically distributed thread breaks.
  • the creation of such information and the determination of the base thread breaks is possible in all exemplary embodiments, and the corresponding information must also be taken into account when creating the information for the spinning station status memory. It should also be noted that the base can be determined relatively shortly after doffing, for example after a back and forth movement, so that it is available in time and forms a secure basis for the regulation according to the invention.
  • the central block 260 represents a program block which, taking into account the actual state of the spinning machine, which is currently stored in the program block 262, is able to predict the production of the respective spinning machine for a specific period of time.
  • a period of around 8 hours would be favorable here, i.e. the computer is programmed so that it can calculate the total production of the next 8 hours based on the known actual state, taking into account the specified speed setpoint profile and all other essential operating parameters, such as doffing processes, etc.
  • Such programs are known in the art and are already becoming now used to simulate an actual system.
  • program block 260 taking into account the current state of block 262, can predict the future state of production after a certain period of time, which is stored in block 264.
  • the computer is able, by presupposing various assumptions, which are also stored in program block 266 as possible variants of a sub-strategy, taking into account the saved data of the current state and the removal capacities for the different thread breaks Carry out a large number of variant calculations in order to calculate the production within the next 8 hours. Since the computer can perform these calculations in seconds, it is easily possible to run through a relatively large number of variants and to look at the result in order to determine which variant should then be accepted for the actual operation of the system.
  • program block 268 is provided by doing this Enter optimization target, for example highest production during the next 8 hours.
  • the entry itself can be made via the keyboard 269.
  • This program block 268 automatically compares results of the variant calculations in order to determine the cheapest variant in each case.
  • program block 268 is also a little smarter: it determines, for example, that successive changes in speed initially lead to an improvement, but then to a poorer result.
  • the optimization goal becomes the goal through targeted changes to the parameters that can be influenced certainly.
  • program block 268 is able to specify the variants to be checked by the computer, which is indicated by coupling 270 to block 266.
  • the program block 268 must receive the respective results via the calculated variants, which is why it is schematically coupled to the block 264 via the line 272.
  • program block 268 dynamically optimizes with sensitivity analysis.
  • this variant can be put into practice immediately by adapting the real operating parameters of the machine, so that the system actually continues to run according to this variant. This is drawn using line 274, for example.
  • line 274 for example.
  • the newly selected variant then naturally leads to changed data about the current state and this data is communicated to block 262 via line 276.
  • the selected variant does not have to be determined for the entire 8 hours, but the computer can use the changing actual state to check the extent to which the method runs according to its simulation forecast. Should deviations occur, a new simulation can be carried out on the basis of the current state, taking into account the changed current state.
  • the microprocessor has been separated into different fields or blocks for the sake of illustration only.
  • the corresponding operations are carried out by software, that is to say by the programming of the microprocessor, the speed control device also possibly being able to be integrated into the microprocessor, ie it does not have to be carried out as an independent component.
  • an optimization goal is first set. This can be, for example, the maximum profit after a certain period of time, the maximum production after a certain production period or the minimum loss over a certain production period.
  • the maximum profit and the maximum production are with each other related, because profit is calculated from the cost of the raw material (here the cost of the roving), from the sales value of the production and from the costs of the waste incurred during production and from the operating costs.
  • Each target can be considered mathematically as a function of the speeds in the different areas of the cop formation.
  • Z Z (F1, F2, F3 ...), where F1, F2, F3 etc. represent the speed correction factors for the individual areas of the bobbin formation according to FIG. 6.
  • the goal of the simulation is therefore the factors F1, F2, F3 as above to choose that over the selected simulation time of 30 hours in this example, the production represents a maximum.
  • the weight of a full cop is 62.4 g and the spindle speed at point 204 in FIG. 6 is 16000 rpm and the cop run time for a trigger (time between doffing operations) is 3 hours 54 minutes, the time for the last 5 mm of the cop filling 7 minutes 33 seconds. During this time, the robot must return to its parking position, regardless of the thread breakage removal work still to be done.
  • the parameters of the spinning machine itself must be taken into account as follows: Doff time (minutes): 6.0 Spindles not usable on the machine: 0 Distributed thread breaks / 1000 spindle hours at 16000 rpm: 100 Share of which cannot be remedied in%: 1.00 Doffad breaks in% of running spindles: 02 Proportion of winding in% of all thread breaks: 0.50 From this it can be seen that the doffing process takes 6 minutes, during which time no production takes place. The ring spinning machine to be simulated has no spindles that cannot be used. However, this value O could be 2, for example, if two spindles can no longer be put into operation due to mechanical damage.
  • the ring spinning machine is operated both by the attachment robot and by an operator.
  • the maximum permitted winding time is set at 15 minutes. In fact, this boils down to the fact that no thread break may remain uncovered for more than 15 minutes, since winding can begin immediately after a thread break. If the robot stops at one point, it takes 3 seconds to position yourself and prepare to fix the thread break.
  • m indicates the current efficiency of the ring spinning machine in%
  • t represents the total efficiency, i.e. the integrated value of m over time. As mentioned above, this is only an extract. The simulation actually started with the time 0 hours, 0 minutes and 0 seconds with deduction 01 (first attachment after doffing) and with empty tubes, so that the initial percentage in the penultimate column is 0%.
  • the last column shows the lap time of the attachment robot, i.e. the duration of a back and forth run from the machine head to the machine base and back to the machine head.
  • the table in FIG. 14 only begins with the result of the simulation after 5 hours and 15 minutes. We have already hoped here, that means we are at trigger 02 and the heads of this trigger are already 32.1% full if there is no thread breakage. The operating robot runs back and forth normally and has reached a lap time of 5 minutes and 31 seconds for the last 15 minutes.
  • the simulation continues in this pattern up to the full 30 hours. During this simulation period, seven full deductions and part of the deduction 08 were completed, whereby the cops are 51.3% full after 30 hours, ie on the eighth deduction, if no thread breakage has occurred. The results of this simulation are recorded below.
  • the simulation takes 30 hours, we are 08 for the current deduction, with the cops having a theoretical fill of 51.3%.
  • the current efficiency is 98.60% and the total efficiency is 98.68%.
  • the robot has spun a total of 1499 positions and decommissioned 21 spinning positions.
  • the computer carries out further simulation steps, namely trying to determine the mountain peak at which the production is highest according to the standards of the optimization method used here (preferably the so-called axis-parallel search method). If no impermissible conditions arise (for example, coils that last longer than 15 minutes), the ring spinning machine is operated with the optimized data, otherwise the two permissible parameters are determined.
  • the factors F1, F2, F3 etc. can then be calculated from the optimized values compared to the basic profile and can be used for the current setting of the ring spinning machine.
  • FIG. 13 shows schematically how the optimization works.
  • the quality function for example the profit Z achieved here
  • the optimization method for example using the method of axis parallel search, leads to the selection of new parameters F1, F2, F3 for the next simulation.
  • the most favorable parameters have been determined, they are passed on, the current speed curve is then determined and the corresponding values are set on the ring spinning machine RSM, as shown in the lower part of the schematic diagram.
  • condition measurement and condition monitoring whereby the behavior of the ring spinning machine is measured and the result of this condition monitoring is fed back into the simulation so that the simulation program can make a comparison between the current values and the simulated values. If the two values are far apart, you can raise the alarm here.
  • This information and the essential status information of each production cycle are still stored in a database and are then available to the computer or the simulation program.
  • thread breaks are relatively rare events and one can assume that statistically distributed thread breaks occur independently of one another, it can be assumed that the occurrence of the thread breaks corresponds to a Poisson process. This makes it possible to statistically simulate and determine the individual routes and travel times.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (23)

  1. Procédé pour la régulation de la vitesse de travail d'une machine à filer, particulièrement d'une machine à filer à anneaux possédant une pluralité de postes de filage, dans lesquels un fil peut être produit, et où les casses de fil se produisant sont détectées et le nombre de tours de broches des postes de filage est réglé en fonction du nombre de casses de fil se produisant par unité de temps,
    caractérisé par le fait que
    la capacité d'élimination des casses de fil effectivement à disposition, respectivement une valeur correspondant à celle-ci, est déterminée, qu'une valeur de consigne donnée pour le nombre de tours des broches est déterminée en fonction du nombre de casses de fil détectées par unité de temps et de la capacité d'élimination des casses de fil effectivement à disposition, et que la vitesse de travail de la machine à filer est réglée de telle façon que l'on obtienne une production maximum.
  2. Procédé selon revendication 1,
    caractérisé par le fait que
    la valeur de consigne donnée pour le nombre de tours est déterminée par le fait qu'un profil de valeur de consigne du nombre de tours prédéterminé d'une manière fixe, qui représente une valeur de base pour le nombre de tours comme fonction du cycle de construction de la bobine de filage, est corrigé par une valeur de correction qui est calculée à partir du nombre de casses de fil se produisant par unité de temps et la capacité d'élimination des casses de fil effectivement à disposition.
  3. Procédé selon revendication 2,
    caractérisé par le fait que
    la valeur de correction est déterminée à l'aide d'une simulation avec calcul alternatif, optimisée sur le meilleur effet de rendement.
  4. Procédé selon l'une des revendications précédentes,
    caractérisé par le fait que
    la capacité d'élimination des casses de fil effectivement à disposition est introduite manuellement dans un régleur réalisant le procédé de régulation, et est introduite nouvel lement lors d'un changement de la capacité d'élimination des casses de fil.
  5. Procédé selon l'une des revendications 1 à 3,
    caractérisé par te fait que
    l'élimination des casses de fil est effectuée par au moins un robot, respectivement un automate de rattache de fil.
  6. Procédé selon revendication 5,
    caractérisé par le fait que,
    lors de l'utilisation d'un robot de service, les casses de fil se produisant et étant détectées, sont classifiées en au moins deux classes, c'est-à-dire en casses de fil répartics statistiquement dans le temps et en d'autres casses de fil formant le socle et où le socle est constitué par le nombre de postes de filage ayant une fréquence de casses de fil située au-dessus de la moyenne, et par le nombre de postes de filage qui sont défectueux, et où, par exemple, les postes de filage défectueux sont ceux où des enroulements se produisent, où le curseur d'anneau est absent, et où une mèche cassée ou défectueuse se présente, ce par quoi ces casses de fil sont enregistrées par le robot comme ne pouvant être éliminées, et que la valeur de consigne donnée pour le nombre de tours de broches est déterminée en fonction des casses de fil par unité de temps réparties statistiquement dans le temps et la capacité d'élimination des casses de fil effectivement à disposition pour de telles casses de fil.
  7. Procédé selon revendication 6,
    caractérisé par le fait que
    la capacité d'élimination des casses de fil est donnée sous forme d'un temps d'attente moyen, jusqu'à ce que le robot puisse éliminer une casse de fil, que le nombre des casses de fil déterminees par unité de temps est traité comme valeur réciproque, c'est-à-dire le temps moyen à disposition pour éliminer une casse de fil, et que ladite valeur de correction est calculée à partir de la valeur réciproque et le temps d'attente moyen, jusqu'a l'élimination d'une casse de fil à l'aide d'un algorithme de réglage.
  8. Procédé selon l'une des revendications précédentes,
    caractérisé par le fait
    qu'au moins les casses de fil réparties statistiquement dans le temps sont éliminées par un robot de service, respectivement un automate de rattache, alors que d'autres postes de filage, ayant une fréquence de casses de fil située au-dessus de la moyenne, respectivement des casses de fil ne pouvant être éliminées par le robot, c'est-à-dire des postes de filage de socle, sont remis en état par une intervention manuelle, et que la capacité d'intervention manuelle effectivement à disposition ainsi que la capacité de robot effectivement à disposition pour l'élimination des casses de fil sont prises en considération lors d'une simulation du système entier, afin de déterminer une valeur de nombre de tours qui est optimisée sur le meilleur effet de rendement.
  9. Procédé selon revendication 2 et revendication 8,
    caractérisé par le fait que
    l'information concernant les casses de fil détectées est évaluée statistiquement, la cadence des casses de fil réparties statistiquement dans le temps, relative à la phase de formation de la bobine de filage, est déterminée, et le profil de valeur de consigne du nombre de tours prédéterminé est corrigé en correspondance.
  10. Procédé selon l'une des revendications précédentes 2 à 9,
    caractérisé par le fait que
    la subdivision en casses de fil réparties statistiquement dans le temps et en postes de filage ayant une fréquence de casses de fil siutée au-dessus de la moyenne est réalisée en ce que, lors de l'apparition d'une casse de fil, le robot essaie d'éliminer cette casse de fil, et où, en cas de réussite, la casse de fil est d'abord considérée comme étant une casse de fil répartie statistiquement dans le temps, et, en cas d'échec, elle est cataloguée comme étant une casse de fil ne pouvant être éliminée par le robot et appartenant au socle.
  11. Procédé selon l'une des revendications précédentes 2 à 9,
    caractérisé par le fait que,
    en cas de casses de fil répétées dans un intervalle de temps prédéterminé dans le même poste de filage, les casses de fil ne sont plus considérées comme étant réparties statistiquement dans le temps, mais comme casses de fil appartenant au socle.
  12. Procédé selon l'une des revendications précédentes 2 à 12,
    caractérisé par le fait que
    le robot de service, respectivement l'automate de rattache donne automatiquement sa capacité d'élimination des casses de fil effectivement à disposition, dans la régulation, et actualise celle-ci d'une manière continue respectivement intermittente.
  13. Procédé selon l'une des revendications précédentes,
    caractérisé par le fait que
    des valeurs limites sont données pour le profil de la valeur du nombre de tours effectif, lesquelles représentent des valeurs limites mécaniques et/ou technologiques de la machine à filer qui, pendant le procédé, ne doivent pas être surpassées respectivement rester en dessous.
  14. Procédé selon l'une des revendications précédentes,
    caractérisé par le fait que
    le robot de service patrouille le long de la machine à filer, respectivement de la machine à filer à anneaux, détecte, pendant un passage, les casses de fil à éliminer qui se sont nouvellement produites depuis son dernier passage, et essaie d'éliminer les casses de fil nouvellement produites, seulement lors du passage suivant et où, simultanément, les casses de fil nouvellement produites depuis le dernier passage sont détectées, cependant pas éliminées, et où ce cycle de travail se répète continuellement, et le robot de service annonce au système de régulation les casses de fil reconnues et éliminées par lui, ainsi que les casses de fil non éliminées.
  15. Procédé selon revendications 5 et 14,
    caractérisé par le fait que
    le robot de service détecte également d'autres types de défauts ne pouvant être éliminés par lui, lors de son mouvement de patrouille, et donne également au système de régulation l'information correspondante.
  16. Procédé selon l'une des revendications précédentes,
    dans lequel la capacité d'élimination des casses de fil est utilisée en moyenne à un peu moins de 50%.
  17. Procédé pour le fonctionnement d'une machine à filer, particulièrement d'une machine à filer à anneaux ayant une pluralité de postes de filage, dans lesquels un fil peut être produit et des casses de fil se produisent pendant la marche, caractérisé par le fait que
    les postes de filage, dans lesquels une casse de fil est indiqué, sont examinés, afin de déterminer les casses de fil de socle, c'est-à-dire les casses de fil réparties non statistiquement dans le temps.
  18. Dispositif servant à la régulation de la vitesse de travail d'une machine à filer à anneaux possédant une pluralité de postes de filage, dans lesquels un fil peut être produit, et où les casses de fil se produisant sont détectées et le nombre de tours de broches des postes de filage est réglé en fonction du nombre de casses de fil se produisant par unité de temps, particulièrement pour la réalisation du procédé selon revendication 1,
    caractérisé par
    un microprocesseur (214) avec des entrées (220; 232) pour les données concernant la capacité d'élimination des casses de fil et les casses de fil produites, et avec une sortie réglant le nombre de tours des broches (30) de la machine à filer à anneaux (10), et où le microprocesseur (214) est pourvu d'un programme qui produit un signal déterminant le nombre de tours des broches (30), en prenant en considération aussi bien les casses de fil produites que la capacité d'élimination des casses de fil à disposition, signal qui se situe à ladite sortie, et est réglé de telle manière qu'un maximum de production peut être obtenu.
  19. Dispositif selon revendication 18,
    caractérisé par le fait que
    le microprocesseur (214) possède un calculateur de correction du nombre de tours (224) qui produit une valeur de correction qui peut être utilisée pour la correction d'une valeur de nombre de tours, laquelle peut être lue par un profil de valeur de consigne du nombre de tours (228) pouvant être prédéterminé, en fonction de la hauteur momentanée S du banc porte-anneaux (44) ou d'un paramètre accouplé avec cette hauteur, par exemple le temps écoulé depuis le dernier processus d'échange de bobines, et que la valeur corrigée du nombre de tours représente le nombre de tours prescrit Dsoll pour un appareil de réglage de nombre de tours (216) réglant le nombre de tours de broche.
  20. Dispositif selon revendication 19,
    caractérisé par le fait que
    l'appareil de réglage de nombre de tours (216) est intégré dans le microprocesseur (214).
  21. Dispositif selon revendication 19 ou revendication 20,
    caractérisé par une unité de correction (244) pour la correction du profil de valeur de consigne du nombre de tours (228) correspondant à la cadence détectée des casses de fil réparties statistiquement dans le temps.
  22. Dispositif, particulièrement selon les revendications 18 - 21,
    caractérisé par la combinaison avec un ordinateur qui est programmé de telie sorte qu'il peut déterminer les casses de fil de socle, c'est-à-dire les casses de fil non réparties statistiquement dans le temps.
  23. Dispositif selon revendication 22,
    caractérisé par le fait que
    l'ordinateur est équipé d'un programme de simulation, et où, en prenant en considération le nombre des casses de fil de socle ainsi que le nombre des casses de fil réparties statistiquement dans le temps et les capacités d'élimination, l'ordinateur réalise des calculs alternatifs pour ces deux types de casses de fil afin de calculer une optimisation du fonctionnement de la machine à filer sur le meilleur effet de rendement pour un temps prédéterminé, et fait ensuite fonctionner la machine à filer selon ces alternatives, au moins jusqu'à ce que le déroulement de la production correspond au déroulement projeté par l'alternative choisie.
EP90116285A 1989-08-30 1990-08-24 Procédé pour la commande de la vitesse de travail d'un métier à piler à anneaux Expired - Lifetime EP0415290B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3928755 1989-08-30
DE3928755A DE3928755A1 (de) 1989-08-30 1989-08-30 Verfahren zur regelung der arbeitsgeschwindigkeit einer ringspinnmaschine

Publications (2)

Publication Number Publication Date
EP0415290A1 EP0415290A1 (fr) 1991-03-06
EP0415290B1 true EP0415290B1 (fr) 1995-06-28

Family

ID=6388228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90116285A Expired - Lifetime EP0415290B1 (fr) 1989-08-30 1990-08-24 Procédé pour la commande de la vitesse de travail d'un métier à piler à anneaux

Country Status (4)

Country Link
EP (1) EP0415290B1 (fr)
JP (1) JPH0390633A (fr)
CS (1) CS415790A2 (fr)
DE (2) DE3928755A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2565306B1 (fr) 2011-09-02 2017-07-26 Saurer Germany GmbH & Co. KG Métier à tisser à rotor à extrémité ouverte

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127990A1 (de) * 1991-08-23 1993-02-25 Rieter Ag Maschf Verfahren und vorrichtung zum betrieb wenigstens eines bereichs einer spinnerei unter anwendung eines dem bereich zugeordneten prozessleitrechners einer prozessleitebene
EP0515311A1 (fr) * 1991-05-22 1992-11-25 Maschinenfabrik Rieter Ag Procédé et dispositif pour le fonctionnement d'au moins une zone d'une filature en utilisant un processeur associé avec cette zone sur un niveau de commande du processus
DE4402582C2 (de) * 1994-01-28 1997-12-04 Zinser Textilmaschinen Gmbh Verfahren und Vorrichtung zur Optimierung der Spinngeometrie einer Ringspinnmaschine
DE10129201A1 (de) * 2001-06-18 2002-12-19 Rieter Ingolstadt Spinnerei Eigenoptimierung für fadenführende Maschinen
DE10137081B4 (de) * 2001-07-28 2017-02-23 Rieter Ingolstadt Gmbh Textilmaschine mit einer Wartungseinrichtung und Verfahren zur Kollisionsvermeidung
DE102004053505A1 (de) * 2004-11-02 2006-05-04 Wilhelm Stahlecker Gmbh Verfahren zum Optimieren der Produktionsleistung einer Spinnmaschine
DE102006003941A1 (de) * 2005-09-19 2007-03-22 Maschinenfabrik Rieter Ag Spinnmaschine mit Drehungs- und Verzugsanpassung
JP2007326675A (ja) * 2006-06-07 2007-12-20 Okamura Corp 袋保持具
CH702009A1 (de) * 2009-10-02 2011-04-15 Uster Technologies Ag Verfahren zur Optimierung eines textilen Produktionsprozesses.
CH715390A1 (de) 2018-09-27 2020-03-31 Rieter Ag Maschf Verfahren zum Betreiben einer Ringspinnmaschine.
JP7052683B2 (ja) * 2018-11-13 2022-04-12 株式会社豊田自動織機 紡機のスピンドル制御方法およびスピンドル制御装置
CN112880665A (zh) * 2021-01-26 2021-06-01 微山县微山湖微电子产业研究院有限公司 一种纱线质量自动追踪方法及系统
CZ2022522A3 (cs) * 2022-12-12 2024-06-19 Rieter Cz S.R.O. Způsob řízení technologického procesu na dopřádacím stroji, dopřádací stroj k provádění způsobu, počítačový program k provádění způsobu na dopřádacím stroji a počítačem čitelné médium s počítačovým programem

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693340A (en) * 1969-08-07 1972-09-26 Hiroyuki Kanai Spindle speed controlling device for ring spinning and twisting machines
US3680299A (en) * 1970-08-10 1972-08-01 Parks Cramer Co Textile yarn production control apparatus and method
CH555422A (de) * 1973-02-20 1974-10-31 Heberlein Hispano Sa Verfahren und vorrichtung zur regelung von spinnmaschinen.
DE2454721C2 (de) * 1974-11-19 1986-10-23 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Verfahren und Einrichtung zum Betrieb eines Ansetzwagens
DE2502426A1 (de) * 1975-01-22 1976-07-29 Zinser Textilmaschinen Gmbh Verfahren und vorrichtung zum ueberwachen der arbeitsfaehigkeit eines fadenansetzgeraetes zum selbsttaetigen beheben von fadenbruechen an spinn- oder zwirnmaschinen
DE2528475A1 (de) * 1975-06-26 1977-01-20 Schlafhorst & Co W Verfahren und vorrichtung zur gemeinsamen laufenden ueberwachung der arbeitsstellen einer oder mehrerer textilmaschinen
GB2192646B (en) * 1986-07-16 1989-12-13 Tsnii Promy Lubyanykh Volokon Method of, and apparatus for, controlling a spinning machine
DE3624212A1 (de) * 1986-07-16 1988-01-28 Tsnii Promy Lubyanykh Volokon Verfahren und anordnung zur steuerung einer spinnmaschine
DE3717749A1 (de) * 1987-05-26 1988-12-15 Zubler Geraetebau Verfahren zur aktiven fadenbruchverhinderung an spinn-, zwirn- und spulmaschinenantrieben sowie deren vollautomatisches ausregeln auf maximale produktionsdrehzahlen
EP0321124A3 (fr) * 1987-12-04 1990-11-14 Daishin Denko Company Limited Moyen et appareil de commande de vitesse pour un appareil de traitement de matière à processus répétitif
JPH0720800B2 (ja) * 1988-03-01 1995-03-08 村田機械株式会社 紡績工場における品質管理システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2565306B1 (fr) 2011-09-02 2017-07-26 Saurer Germany GmbH & Co. KG Métier à tisser à rotor à extrémité ouverte

Also Published As

Publication number Publication date
JPH0390633A (ja) 1991-04-16
DE59009323D1 (de) 1995-08-03
DE3928755A1 (de) 1991-03-07
EP0415290A1 (fr) 1991-03-06
CS415790A2 (en) 1991-12-17

Similar Documents

Publication Publication Date Title
EP0415290B1 (fr) Procédé pour la commande de la vitesse de travail d'un métier à piler à anneaux
EP3802927B1 (fr) Ligne de filature à anneau et son procédé de fonctionnement
EP0090911B1 (fr) Procédé et dispositif pour rendre optimum un événement de travail à chaque poste de travail d'une machine textile
EP3260584B1 (fr) Procédé destiné à optimiser la production d'une machine à filer à bout libre
DE102007056561A1 (de) Kreuzspulen herstellende Textilmaschine
EP0394671B1 (fr) Procédé pour faire fonctionner un métier à filer et robot de manipulation pour la mise en oeuvre de ce procédé
EP2017377A2 (fr) Procédé destiné au fonctionnement d'un métier à tisser
EP3533739B1 (fr) Procédé de fonctionnement d'une machine textile et machine textile
EP2955143B1 (fr) Machine textile semi-automatique fabriquant des bobines
DE10137056C5 (de) Verfahren zur Wartung einer Textilmaschine
EP2966201A2 (fr) Métier à tisser à rotor semi-automatique à extrémité ouverte
EP3144418A1 (fr) Procede d'adaptation d'une conception usine concernant une fabrication de lot de fil d'un metier a tisser a rotor a extremite ouverte
EP2762617A1 (fr) Procédé d'optimisation de changement de lot sur un métier à filer à fibres libérées
DE19917968B4 (de) Serviceaggregat für eine Kreuzspulen herstellende Textilmaschine
DE4306095A1 (de) Verfahren und Einrichtung zum Steuern einer vernetzten Anlage
DE3717749C2 (fr)
DE102004041051A1 (de) Intelligentes Störungsmanagement
DE3216218C2 (fr)
DE102006001565A1 (de) Verfahren zum Aufspulen eines Fadens an einer Kreuzspulen herstellenden Textilmaschine sowie Kreuzspulen herstellende Textilmaschine
EP2078770A2 (fr) Procédé d'opération d'une position de filature d'une machine open-end semi automatique et position de filature destinée à l'exécution du procédé
DE102016108391A1 (de) Verfahren zum Garnmassenanspinnen auf den Arbeitsstellen einer Rotorspinnmaschine und Einrichtung zu dessen Ausführung
DE3909746A1 (de) Verfahren zum betrieb einer ringspinnmaschine sowie bedienroboter zur durchfuehrung des verfahrens
DE2519221C2 (de) Verfahren und Vorrichtung zum Fühlen von Fadenbrüchen an Spinn- oder Zwirnmaschinen
DE102007038871A1 (de) Verfahren zum Anspinnen an Textilmaschinen mit einer Mehrzahl von Spinnstellen
EP3967797A1 (fr) Machine textile, ainsi que procédé de fonctionnement d'une telle machine textile

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE IT LI

17P Request for examination filed

Effective date: 19910426

17Q First examination report despatched

Effective date: 19931129

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19950628

REF Corresponds to:

Ref document number: 59009323

Country of ref document: DE

Date of ref document: 19950803

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960722

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970728

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990601