JP4991482B2 - Method for preparing a spinning cup formed with a spinning device for the rewinding process in an automatic traverse winding device and device for carrying out the method - Google Patents

Description

  The present invention relates to a method for preparing a spinning cup formed in a spinning device for a subsequent rewinding process in an automatic traverse winding device of the type described in the superordinate concept of claim 1, and in claim 5 It relates to an apparatus for carrying out the method.

  Spinning cups, especially spinning cups produced on ring spinning machines, often have so-called reserve winds based on the type of working of such textile machines. That is, the yarn end of such a spinning cup cannot be accommodated at the take-up point of the automatic traverse winding device unless special measures are taken in advance, and is therefore handed over to the yarn supply mechanism at the take-up point. Placed so that it can not.

  For this reason, the spinning cup usually passes through a so-called preparatory device along the path from the ring spinning machine to the winding point of the automatic traverse winding device, and the yarn end of the spinning cup is peeled off by this preparatory device. Prepared for the rewinding process. Such types of preparation devices are known in a wide variety of configurations and are described in more detail in a number of patent specifications. Known preparation devices often have a wide variety of yarn processing stations arranged one after the other, each yarn processing station sequentially processing the spinning cup.

  In the first yarn processing station, for example, the yarn end is first peeled off. This yarn end is then accommodated in a second yarn processing station and prepared for delivery to the take-up point of the automatic traversing device by means of a corresponding yarn supply mechanism.

  German patent application DE 199 170 33 describes, for example, a so-called yarn peeling station. This works with a special probe gauge that can contact the surface of the spinning cup roll. That is, in this known yarn peeling station, a probe gauge is applied to the surface of the spinning cup winding, and then the spinning cup is rotated at a predetermined rotational speed, preferably in the feeding direction. At this time, the probe gauge grips the reserve winding thread, and peels off the reserve winding thread when the probe gauge rotates backward to the starting position at the latest.

  Regarding the treatment of so-called problem cups, further yarn release stations are known in which the mechanical yarn release means are formed as balloon-like elements, which abut against the winding cone of the spinning cup. Also in this case, the spinning cup is rotated in the feeding direction after the yarn peeling means abuts. In such a yarn peeling station, which is known, for example, from DE 195 199917, the yarn peeling means carefully peels the yarn end from the surface of the winding cone of the spinning cup.

  The spinning cup processed at the above-mentioned yarn peeling station is then sent to a so-called yarn end receiving station where the yarn end is received and at the delivery position, for example in the region of the bobbin tip of the spinning cup or empty. Inside the spinning cup bobbin, it is prepared for the yarn feeding mechanism at the winding point.

  Such yarn end receiving stations are also known in a wide variety of configurations, for example described in DE 44 24 462 or DE 195 198 27. This type of yarn end receiving station is usually a drive for reversible rotation of the spinning cup, a pneumatic device for receiving the yarn end, a sensor for monitoring the success of the yarn end receiving The apparatus has a yarn cutting device that can cut the yarn in a predetermined manner. The preparation of the yarn end is preferably effected in the form of a tip winding at the yarn end receiving station. That is, the spinning cup bobbin is wound a predetermined number of times in the region of the bobbin tip.

  In known yarn end storage stations, spinning cups for storing yarn are usually rotated until the sensor device detects successful storage of the yarn end or until a predetermined operating time has elapsed. That is, if the yarn end portion is successfully stored, the spinning cup is immediately stopped in the unwinding direction and the leading end is wound, but if the yarn end portion is unsuccessful, Only after a predetermined time or after a predetermined number of revolutions of the spinning cup is interrupted and the spinning cup is discharged.

  The above preparation device has been demonstrated in practice. However, the disadvantage of this device is that spinning cups are always treated in the same way, regardless of their state.

At the yarn end storage station, if no attempt is made in the yarn end containment attempt, for example, whether the spinning cup still has a chance to accommodate the yarn end within the adjusted speed or adjustment. All spinning cups are rotated to a predetermined maximum number of revolutions, regardless of whether or not the spinning cup has a problem that it is almost impossible to expect the yarn end portion to be successfully accommodated within the set number of revolutions.
German Patent Application Publication No. 19917033 German Patent Application Publication No. 19519917 German Patent Application Publication No. 4424462 German Patent No. 19519827

  Starting from the above prior art, the problem that forms the basis of the present invention is to determine the maximum number of rotations of the spinning cup at the yarn end receiving station when the result of the yarn end receiving attempt is not successful. It is to provide a method and apparatus that can adapt to the actual situation and thus optimize the throughput of the preparation device.

  This problem is solved according to the invention by the method according to claim 1 and the device according to claim 5.

  Advantageous configurations of the invention are described in the dependent claims.

  The method according to the invention has the advantage that the average state of the spinning cup to be processed is automatically evaluated and taken into account accordingly when adjusting the maximum spinning speed of the spinning cup at the yarn end receiving station. is doing. That is, if the yarn handling station is fed with a cracked cup that is difficult or impossible to prepare, such a spinning cup will be rotated at the maximum adjusted maximum number of revolutions of the yarn section. Instead, it is rotated at the maximum number of rotations obtained from the calculated average value. For example, when processing a spinning cup at a yarn end receiving station, it can be seen that, under a plurality of spinning cups, successful yarn end receiving is already obtained after a relatively small number of revolutions, i.e. If the average value of the rotation speed of the spinning cup at the yarn end receiving station is relatively small, the maximum rotation speed at which the spinning cup can rotate while no results are seen in the attempt to receive the yarn end is also obtained. It is adapted by the control device, ie reduced accordingly.

  By reducing the number of rotations that the spinning cup rotates with no success in the yarn end containment attempt, the processing capacity of the preparation device is improved. At this time, the quality of the work of the yarn end containment station is improved. There is no reduction.

  In this case, it is advantageous to adjust the number of rotations of the spinning cup to the maximum value when there is no success in the yarn end accommodation attempt at the yarn end accommodation station as described in claim 2 Is possible. In this way, it is ensured that the spinning cup is ejected from the yarn end receiving station after a predetermined number of revolutions when no attempt is made to attempt to store the yarn end. Thus, on the one hand, such a “crack cup” avoids significantly distorting the average number of rotations the spinning cup rotates at the yarn end receiving station, and on the other hand such a “crack cup”. Guarantee that "having" does not unnecessarily shut off at the yarn end receiving station.

  According to the advantageous configuration of claim 3, at the start of a new yarn portion, the maximum number of rotations that the spinning cup should rotate is set at the yarn end receiving station without any success in attempts to receive the yarn end. To do. In this way, the base is first determined, and the control device automatically optimizes from there. That is, the control device automatically considers the state of the spinning cup and automatically sets the optimum value for the maximum number of rotations that the spinning cup should perform without any success in attempts to receive the yarn end at the yarn end receiving station. Get closer to.

  More advantageously, the spinning cup continuously detects the number of rotations at the yarn end receiving station until a successful attempt to receive the yarn end is detected, thereby calculating an average value in the control unit, Always updated (Claim 4).

  In this way, the control device of the preparation device is advantageous for adapting the maximum rotation speed at which the spinning cup rotates when no result is obtained in the yarn end accommodation attempt at the yarn end accommodation station with respect to the state of the spinning cup. It can react relatively quickly when changes that seem to occur.

  An apparatus for carrying out the method of the invention as claimed in claim 5 comprises a drive device for rotating the spinning cup in the region of the yarn end receiving station, the drive device being prepared Connected to the control device of the device. In this case, the drive device is controlled by the control device so that the maximum number of rotations of the spinning cup when the result of the yarn end accommodation attempt at the yarn end accommodation station is not successful is the value of the yarn end accommodation of the preceding spinning cup. It can be controlled to be adjusted according to an average value representing the number of rotations in the yarn end receiving station until success.

  Embodiments of the present invention will now be described in detail with reference to the drawings.

  FIG. 1 schematically shows in plan view the connection between a ring spinning machine and an automatic traversing device.

  In this case, the ring spinning machine is denoted by reference numeral 1, and the automatic traverse winding apparatus is denoted by reference numeral 2. As is known, both textile machines are connected via a spinning cup / empty bobbin conveying system 30 as indicated only schematically by arrows. In the spinning cup / empty bobbin conveying system 30, the conveying section arranged in the area of the automatic traverse winding apparatus includes a cup supply section 3, a bobbin return guide section 4, a reversibly drivable storage section 5, and a spinning section. This is a horizontal conveyance section 6 that leads to a location. At least one so-called preparation section 7 is further connected to the cup supply section 3, and this preparation section 7 is connected to the storage section 5 or again to the cup supply section 3 via the branch sections 8 and 9 on the end side. Yes.

  In the area of the preparation section 7, a preparation device 10 for the spinning cup 16 is arranged. In the preparation device 10, the spinning cup 16 manufactured in the ring spinning machine 1 is prepared so that it can be processed next at the spinning point of the automatic traverse winding device 2. The preparation device 10 shown in FIG. 1 has a yarn peeling station 11 and a yarn end receiving station 12 for this purpose. The yarn peeling station 11 and the yarn end housing station 12 will be described in detail later with reference to FIGS. 2 and 3, but are connected to the control device 15 of the preparation device 10 via signals and control lines 13 and 14. .

  The yarn peeling station 11 shown as an example in FIG. 2 is described in detail in German Offenlegungsschrift 199 17033. As shown in FIG. 1 and described above, the yarn peeling station 11 is disposed in the region of the preparation section 7 and processes the spinning cup 16. The spinning cup 16 is sent in a vertical direction from the ring spinning machine 1 to the conveying plate 25 via the spinning cup / empty bobbin conveying system 30. That is, the bobbin 22 of the spinning cup 16 is fixed to the insertion pin 28 of the transport plate 25. In this case, the base plate 26 of the transport plate 25 is on the transport belt 31 of the preparation section 7 that is always driven.

  A sensor 35 is arranged in front of the yarn peeling station 11 in the conveying direction. When the conveying plate 25 is detected by the sensor 35 and the spinning cup 16 arrives at the yarn peeling station 11, the yarn peeling station 11 The corresponding capture means for positioning the transport plate 25 are activated. Such catching means comprises, for example, a belt pulley 29. The belt pulley 29 can turn through the notch 32 in the preparation section 7, and the roller 19 located on the opposite side is the same. The triangle formed by the belt pulley 29 and the roller 19 ensures that the position of the conveying plate 25 during yarn separation is accurately maintained and allows the specified rotation of the spinning cup 16 about the longitudinal axis. Is done. At least one belt pulley 29 is driven by a motor 24 for driving the spinning cup 16. The motor 24 is connected to the control device 15 via the control line 14.

  In this embodiment, the yarn peeling station 11 is provided with a lower probe gauge 41 and an upper probe gauge 42.

  The probe gauges 41 and 42 are supported so as to be able to turn, and can contact the surface of the spinning cup 16 via a pneumatic cylinder 43. The pneumatic cylinder 43 advantageously has a spring arranged in the pneumatic cylinder 43, which causes the piston to run when the pneumatic cylinder 43 is exhausted. When the piston is loaded with spring force in this way, the probe gauges 41 and 42 rotate away from the surface of the spinning cup 16 and finally peel off the reserve winding yarn.

  In the state shown in FIG. 2, the spinning cup 16 standing on the transport plate 25 is positioned just at the yarn peeling station 11. Both probe gauges 41 and 42 are swung and applied to the surface of the spinning cup 16. After the transport plate 25 is positioned and the probe gauges 41 and 42 are swung and applied, the motor 24 is controlled by the control device 15 via the control line 14 and driven via the belt pulley 29. The spinning cup 16 is rotated in the winding direction, that is, counterclockwise in the illustrated embodiment. In this case, the roller 19 is entrained in a frictional connection. As the spinning cup 16 rotates counterclockwise, the probe gauges 41 and 42 enter between the surface of the spinning cup 16 and the reserve winding 40 extending around the surface. When further rotating, the point at which the reserve thread 40 is lifted further moves in the direction of the yarn end in the area of the bobbin leg, where the yarn end is usually peeled off. Next, the transport plate 25 provided with the spinning cup 16 is sent to the yarn end receiving station 12 shown in FIG. 3, where the peeled end of the reserve winding yarn 40 is gripped by the suction air and cut. And placed in a predetermined place of the spinning cup 16.

  Various types of configurations of the yarn end receiving station 12 of this type are known and described in the patent literature. The yarn end receiving station 12 serving as an embodiment shown in FIG. 3 is described in greater detail, for example, in DE 195 198 27.

  The yarn end receiving device 12 preferably has a relatively large volume casing 20. This casing is connected to a negative pressure source via a suction air connection portion 21 or a negative pressure line (not shown). In the operating state, a negative pressure of about 60 to 90 mbar is formed inside the casing 20. The casing 20 preferably has a wall 27 that has a vertical extension and is convexly curved in the region of the suction slit 23, which is approximately the length of the spinning cup 16.

  The casing 20 further has a viewing window 33 opened if necessary, from which the inside of the casing can be accessed. Turning elements 34 and 36 are arranged on the upper side or the lower side of the casing 20, and a seal belt 37 is guided through the turning elements 34 and 36. The diverting element 34 is in this case advantageously formed as a diverting roller that can be driven by a controllable drive, and the diverting element 36 is shaped, for example, as a sliding member.

  The seal belt 37 has an air flow hole 38 provided with a suction nozzle 39 provided in front.

  In the operating position, the suction nozzle 39 is directly connected to the large-volume negative pressure casing 20 via the air flow hole 38 and the suction slit 23, and the negative pressure casing 20 itself is connected to the suction air connection portion. It is connected to a negative pressure source (not shown) through 21.

  A sensor device 17 is further incorporated in the area of the suction nozzle 39. The sensor device 17 detects the housed yarn end 49 and is connected to the control device 15 of the preparation device 10 via the signal line 18. Further, a yarn cutting device 48 capable of cutting the accommodated yarn end portion 49 as prescribed is disposed inside the casing 20.

  The yarn end accommodating device 12 further includes a device 44 for centering the spinning cup 16 sent onto the conveying plate 25 and a driving device 45 for rotating the spinning cup 16 about the longitudinal axis. ing. As shown in FIG. 3, the drive device 45 has a drive roller 47 that can be loaded by the drive device 46 in this case. The drive roller 47 can turn to the base plate 26 of the transport plate 25 positioned at the yarn accommodation position.

  The driving device 46 is also connected to the control device 15 of the preparation device 10 via the signal / control line 13.

  The maximum number of rotations in which one spinning cup 16 continues to rotate in the yarn end portion receiving station 12 in a state where the yarn end portion is not received is adjusted to the state of the spinning cup 16 as described above. That is, the control device 15 calculates an average value from the number of rotations that the plurality of spinning cups 16 rotate until the yarn end portion accommodation is successful in the yarn end portion accommodation station 12, and from this average value, the spinning cup 16 Deriving the maximum number of rotations that continue to rotate without yielding yarn end accommodation.

  The suction nozzle 39 moves along the surface of the spinning cup 16 to accommodate the yarn end portion 49, and in this case, the spinning cup 16 is rotated in the feeding direction by the driving device 46. In this case, the suction nozzle 39 grips the yarn end portion 49 by the negative pressure generated from the negative pressure source. Such gripping of the yarn end is detected by, for example, the sensor device 17 disposed in the region of the suction nozzle 39 and transmitted to the control device 15.

  Subsequently, the control device 15 stops the rotation of the spinning cup 16 in the feeding direction and activates the yarn cutting device 48 that cuts the yarn end portion 49. Next, the driving device 46 is controlled by the control device 15 so that the spinning cup 16 rotates in the winding direction. At the same time, the suction nozzle 39 is positioned so that the yarn end 49 pulled out from the suction nozzle 39 by the rotation of the spinning cup 16 in the winding direction is guaranteed to be placed in the region of the bobbin tip of the spinning cup 16. Moved.

FIG. 6 is a diagram schematically showing a coupling portion between a ring spinning machine and an automatic traverse winding device, in which case a preparation device for a spinning cup is inserted in the area of the automatic traverse winding device for performing the method according to the present invention. Has been. It is a figure which shows the yarn peeling station used with a preparation apparatus. It is a figure which shows the yarn end part accommodation station actually used.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Ring spinning machine, 2 Automatic traverse winding device, 3 Cup supply area, 4 Sleeve return guide area, 5 Storage area, 6 Horizontal conveyance area, 7 Preparation area, 8, 9 Branch area, 10 Preparation apparatus, 11 Yarn peeling station, 12 yarn end accommodating station, 13, 14 signal and control line, 15 control device, 16 spinning cup, 17 sensor device, 18 signal line, 20 casing, 21 suction air connection, 22 bobbin, 23 suction slit, 24 motor, 25 Conveying plate, 26 Base plate, 27 Wall, 28 Insertion pin, 29 Belt pulley, 32 Notch, 33 Viewing window, 34 Turning element, 35 Sensor, 36 Turning element, 37 Seal belt, 38 Air through hole, 39 Suction Nozzle, 40 reserve winding thread, 41, 42 probe gauge, 43 pneumatic cylinder, 46 drive device, 47 drive roller, 48 yarn cutting device, 49 yarn end

Claims (5)

A method for preparing a spinning cup formed by a spinning device for a rewinding process in an automatic traverse winding device, comprising a yarn peeling station for peeling the yarn end and a yarn end accommodated at the preparation position And a yarn end accommodating station for placing, a driving device for rotating the spinning cup around the longitudinal axis is provided at each of the yarn peeling station and the yarn end accommodating station, In the type in which the yarn end accommodating station has a sensor device for detecting the success of the yarn end accommodating,
Before the sensor device (17) detects the success of the yarn end portion accommodation, the number of rotations that each spinning cup (16) rotates at the yarn end portion accommodation station (12) is detected and sent to the control device (15),
In the control device (15), an average value (MW) for the average number of such rotations of the spinning cup (16) in the yarn end receiving station (12) is detected and then this average value (MW) The automatic traverse winding is characterized in that the maximum number of rotations when the subsequent spinning cup (16) rotates in a state where the yarn end portion accommodation is not performed in the yarn end portion accommodation station (12) is set. A method for preparing a spinning cup formed with a spinning device for a rewinding process in the device.   The method according to claim 1, wherein the spinning cup (16) is discharged from the yarn end receiving station (12) when the maximum number of revolutions has been reached if no attempt has been made to attempt to store the yarn end.   To start processing a new yarn portion, set the maximum number of rotations that the spinning cup (16) rotates when no results are seen in the yarn end accommodation attempt at the yarn end accommodation station (12). The method of claim 1.   Each spinning cup (16) detects the number of rotations until the yarn end portion is successfully received in the yarn end portion receiving station (12), and from the number of rotations, the controller (15) continuously updates the latest number. The method according to claim 1, wherein an average value (MW) is calculated.   An apparatus for carrying out the method according to claim 1, comprising a drive device (46) arranged in the region of the yarn end receiving station (12), which allows a predetermined rotation of the spinning cup (16). The spinning cup (16) is connected to the control device (15) and the drive device (46) is controlled by the control device (15) according to the average value (MW) calculated in the control device (15). The apparatus for carrying out the method according to claim 1, wherein the apparatus is controllable to rotate at a predetermined maximum number of revolutions when no attempt is made to attempt to contain the yarn end.

Images