JP6738184B2 - Method and system for operating a complex system consisting of at least one ring spinning machine and at least one winder - Google Patents

Description

The invention consists of at least one ring spinning machine with a number of spinning units in which the cups are manufactured, and at least one winding machine with a number of winding units in which the cups are rewound into a twill winding package. A method of operating a complex system for detecting and storing information about a spinning process. The invention further relates to a complex system with a control system for implementing the method.

In a combined system consisting of a ring spinning machine and a winding machine, which is disclosed in DE-A 43 06 095, which belongs to the same technical field, state data in the ring spinning machine is detected. The status data is also sent to the winding unit. The processing of each individual cup supplied from the ring spinning machine to the winding machine is matched to the state data detected during the formation of the cup in the ring spinning machine. Such state data is particularly the occurrence of yarn breakage. Furthermore, it is proposed to carry out a length measurement on a ring spinning machine in order to determine the position of the thread break inside the cup. The length measurement can be performed by the total amount of supply of the stretching unit. The supply amount is obtained from the rotation speed of the supply roller of the stretching unit. The feed rate is generally represented by yarn length data per unit time. In addition to the feed rate, machine operating programs can be used to obtain further information on the spinning process. Here, the movement history of the ring rail is particularly mentioned. In this way it is possible to determine the exact position of the defect inside the cup. In order to produce the highest quality twill package, it is desirable to only rewind the unbroken cup into the twill package. The exact location of the defects in the cup is stated to allow the good parts to be fully used and the less good parts to be treated as poor parts. In addition, the possibility of adapting the winding speed and the thread tension in the defective area during payout of the cup is described. It is known from DE-A-4209203 to detect data, in particular yarn clearer data, on a winder and thus to infer defects in a ring spinning machine. When the yarn clearer finds periodic yarn defects during winding, this makes it possible to infer defects in the drawing unit during ring spinning.

DE 102007058857 discloses a winding unit of a winding machine with a pay-out assisting device, i.e. a special balloon restrictor. The balloon restrictor is here a tubular element, which is lowered onto the cup as the payout progresses. As a result, the diameter of the yarn balloon generated at the time of feeding is limited. The balloon limiter thereby prevents an unacceptable increase in thread tension and thus also allows a relatively high withdrawal speed. Therefore, such a balloon restrictor is also called a drawer accelerator. In order to be able to lower the balloon restrictor as required, the balloon restrictor has a sensor device for detecting the cup cone, so that such a device is correspondingly expensive to construct. Has been done.

DE 195 19 827 discloses a cup preparation device with a movable yarn end catching device. The yarn end catching device serves to find the yarn end in the cup and unwind it so that it can be easily found in the winding unit of the winder. The yarn end catching device is designed as a suction nozzle which is adjustable in working height. This allows the suction nozzle to be aligned with the position of the cup cone. The suction nozzle has a sensor device for detecting the position of the cup cone. The suction nozzle is positioned in the region of the cup cone to catch the yarn.

German Patent Application Publication No. 4306095 German Patent Invention No. 4209203 German Patent Application Publication No. 102007058857 German Patent Application Publication No. 19519827

An object of the present invention is to simplify the handling of cups and improve the quality of the cups in a combined system consisting of a ring spinning machine and a winding machine.

This problem is solved according to the invention by a method with the characteristic features of the characterizing part of claim 1 and a complex system according to claim 13. Preferred embodiments of the invention are described in the dependent claims.

In order to solve the above problems, by using the information about the spinning progress at the end of the spinning process, the position of the cup cone of the cup is determined, the determined position of the cup cone, in the further processing of the cup outside the ring spinning machine. use.

Recognition of the position of the cup cone is necessary for a series of process steps after the spinning process. By using the information on the spinning process, it is possible to dispense with a sensor which detects the cup cone during further processing and thus to simplify the corresponding handling device. Furthermore, recognition for improving the quality can be obtained from the recognition of the position of the cup cone.

The spinning progress can be detected using the spinning parameters and the yarn breakage detected in the spinning unit of the ring spinning machine. At this time, the spinning parameter may include a value indicating the ring rail movement and/or the supply amount.

A spinning ring with a ring traveler is located on the ring rail. The ring traveler guides the thread. The yarn is wound into a cup cone by the lifting movement of the ring rail. As the cup grows, the lifting movement of the ring rail is superimposed on the lifting movement. That is, the ring rail motion determines the position of the cup cone. Normally, the position of the cup cone results from the last ring rail position before the end of spinning (Abspinnen). Only if the thread breakage is not eliminated, the cup cone will be located at the ring rail position at the time of thread breakage. Therefore, in addition to the ring rail movement, thread breaks are preferably detected in order to ensure that the position of the cup cone can be determined even in a cup that is not completely wound.

If, in addition to the ring rail movement, a value indicative of the feed rate is also detected, it is possible to create a relationship between the yarn wound on the cup and the position of the cup cone. This makes it possible to continuously determine the changing cup cone position during the withdrawal of the yarn from the cup in the winding unit.

For that purpose, preferably, in the winding unit, the length of the yarn pulled out from the cup is detected. Preferably, the position of the cup cone of the cup located in the winding unit is obtained from the information on the spinning progress and the yarn length drawn in each winding unit.

According to a preferred embodiment, a drawer accelerator provided on the winding unit is lowered in relation to the determined position of the cup cone. This can eliminate the sensor that detects the cup cone.

The method according to the invention can also be used in the context of a cup preparation device, in which a cup is prepared for processing in a winding unit and for preparing a cup in a cup preparation device. , The yarn end is captured using a movable yarn end capturing device. Such a cup preparation device is used in particular in cups which are not completely wound. According to the prior art, in this case the position of the yarn end is not confirmed at all. The present invention is now able to utilize information about the position of the cup cone. This causes the yarn end catching device to move to the desired position of the cup cone in order to catch the yarn end. The sensor device in the cup preparation device for detecting the cup cone can be omitted.

The comparable cup preparation device is also used for cups that have not been fully dispensed in the winding unit. After a corresponding preparation, the cup can be freshly processed in the winding unit. Moreover, according to the prior art, the position of the yarn end is not confirmed at all. According to another aspect of the present invention, the position of the cup cone of the cup that has not been completely fed out is obtained from the information about the spinning progress and the yarn length drawn in each of the winding units, and the yarn end catching device is provided. Move the cup cone to catch the yarn end to the desired position. In this case as well, the sensor can be omitted.

According to another aspect of the invention, the winding unit monitors for defects in the yarn withdrawn from the cup. The determined position of the cup cone is used to detect and store the position of the defect inside the cup. Such detection allows speculation for problems in the spinning unit. Therefore, the frequent occurrence of defects at a specific position inside the cup is detected. The spinning parameters can be adapted in relation to the frequent occurrence of defects at specific locations inside the cup. In this way, it is possible to prevent further occurrence of this defect during feeding of the cup.

The spindle speed to be adapted is considered as the spindle speed. The spindle speed is reduced at the ring rail height which corresponds to the position of the defect inside the cup.

The problem is further solved by a complex system implementing the method according to the invention. The combined system comprises at least one ring spinning machine with multiple spinning units for producing cups, at least one winder with multiple winding units for rewinding the cups into a twill package, and a control system. , And the control system is configured to detect and store information regarding spinning progress. In order to solve the above problems, the control system further uses the information on the spinning progress at the end of the spinning process to determine the position of the cup cone of the cup, and the determined position of the cup cone of the ring spinning machine. It is adapted for use during further processing of the cup externally.

It is a figure which shows the composite system which consists of a ring spinning machine and a winding machine. It is a figure which shows roughly the spinning unit of a ring spinning machine. It is a figure which shows the winding unit of a winding machine roughly. It is a figure which shows the cup in a cup preparation device.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a composite system 60 including a ring spinning machine 30 and a winding machine 1. As shown in FIG. 3, this composite system 60 has a bobbin/winding tube transport system 3, and this bobbin/winding tube transport system 3 is a spinning cup manufactured from the ring spinning machine 30 (hereinafter simply referred to as “cup”). 9) is conveyed to the winding unit 2 of the winding machine 1, and the unwound winding tube 34 is returned and conveyed to the ring spinning machine 30. The cup 9 is positioned on the transport tray 8 for transport. The bobbin/winding tube transport system 3 has a cup supply section 4 on the winding machine side. Before entering the cup supply section 4, the cup 9 placed on the transport tray 8 passes through the cup preparation device 47. The cup preparation device 47 prepares the yarn end of the cup 9, so that the yarn end can be easily caught in the winding unit 2. The prepared cup 9 is further conveyed to the reversibly drivable storage section 5 via the branch section 44, and is guided from the storage section 5 to the winding unit 2 via the lateral transfer section 6. The unwound winding tube 34 is returned and conveyed to the ring spinning machine 30 via the winding tube returning section 7. The cup 9 which has not been fully dispensed is guided via a branch section 45 to a cup preparation device 46 for a residual cup. The residual cup is then fed again to the winding unit 2 via the storage section 5 and the lateral transport section 6.

The complex system 60 has a control system 55. In the illustrated embodiment, the control system 55 has a control unit 56 arranged corresponding to the winding machine 1 and a control unit 57 arranged corresponding to the ring spinning machine 30. The control units 56, 57 enable control of the winder 1 and the ring spinning machine 30 respectively with preset parameters. The control units 56, 57 evaluate the sensor data and control the actuator. The control units 56, 57 may have subordinate control units that control the particular distributed process. The control units 56, 57 are connected to each other by means of a bus system 58, by means of which data and parameters can be exchanged between the ring spinning machine 30 and the winding machine 1.

FIG. 2 shows the spinning unit 50 of the ring spinning machine 30. Such a ring spinning machine 30 is shown here only schematically because its principle is known. The structure of the cup 9 is also shown here more accurately. The cup 9 is wound into a somewhat conical winding tube 34 that tapers from the winding tube base 16 toward the winding tube tip 15. The yarn package (Garnkoerper) of the cup 9 has a somewhat rounded appendage 21 on the tube base 16 and a cup cone 20 in the region of the tube tip 15.

The cup 9 is arranged on a rotating spindle 41, while the ring rail 27 moves up and down. In this ascending/descending movement, the movement toward the tip 15 of the winding tube is superimposed on the structure of the cup 9. The ring spinning machine 30 has a stretching unit 38. The yarn 39 supplied from the drawing unit 38 passes through the yarn guide 36 and then the ring traveler 31. The ring traveler 31 rotates around the cup cone 20 in the spinning ring 29. The spinning ring 29 is arranged on the ring rail 27 and moves up and down together with the ring rail 27, so that the yarn 39 is wound in the cup 9 in the region of the cup cone 20. After completion of the cup 9, the ring rail 27 moves to the winding base 16 as quickly as possible so that only a minimum number of reserve windings in the cup 9 occur. After winding the underwinding around the spindle 41, the doffing process can be started. That is, the completed cup 9 is doffed from the spindle 41 of the ring spinning machine 30 and delivered to the bobbin/winding tube transport system 3. The spinning unit 50 of the ring spinning machine 30 is controlled in the center as much as possible. Thereby, the doffing or doffing (Abzug) of the cups 9 of all the spinning units 50 is simultaneously performed.

In the winding unit 2, the cup 9 is positioned at the feeding position 10. FIG. 3 schematically shows the structure of the winding unit 2. In the winding unit 2, the yarn is rewound from the cup 9 to the twill package 11. A drawer accelerator 23 is located above the spinning cup 9 at the payout position 10. The draw-out accelerator 23 is formed as a pipe that can descend, and is lowered as the cup 9 is fed out. A winding device 24 is provided to wind up the twill winding package 11. The winding device 24 has a package frame 18, and the package frame 18 can swivel around a swivel axis 19. The traverse package 11 is in contact with the package drive roller 26 and is driven by the package drive roller 26. The yarn is wound on the traverse package 11 using the traverse device 28. A yarn splicing device 13 formed as a splicer is provided to form the yarn splicing part after the yarn breaks. A swirlable suction nozzle 12 is provided for capturing the upper yarn coming from the twill package 11 and inserting it into the yarn splicing device 13, which suction nozzle 12 has a negative pressure extending over the machine length. It is connected to a negative pressure source 33 via a traverse 32. A swivel gripper tube 25 is provided for inserting the bobbin thread coming from the cup 9 into the thread splicing device 13. A yarn tensioner 14 is arranged below the yarn joining device 13, and the yarn tensioner 14 can be used to clamp the lower yarn after the yarn is cut. The lower thread sensor 22 detects the presence of the lower thread.

Upon breaking of the thread under the thread tensioner 14 or after complete unwinding of the cup 9, a cup changing operation (Kopswechselschaltung) is started and a new cup 9 is positioned in the unwinding position 10. If the discharged cup 9 still has residual winding, this cup 9 is fed to the cup preparation device 46. In order to feed the residual wound body also in the winding unit 2, the yarn end portion is newly prepared in the cup preparation device 46. The completely wound winding tube 34, that is, the empty tube is supplied to the ring spinning machine 30 again.

If the yarn end of a new cup cannot be captured in the winding unit 2, for example on the basis that the yarn end was not prepared correctly in the cup preparation device 47, such a cup 9 will also be wound. It is discharged from 2 and supplied to a cup preparation device 46 for the residual cup.

Both the cup preparation device 46 and the cup preparation device 47 can have a device 48 as shown in FIG. This device 48 is suitable both for cups 9 that have not been completely wound by the ring spinning machine 30 and for cups 9 that have not been completely pulled out in the winding unit 2, so that only the cup preparation device 47 is a device 48. It is also possible to omit the cup preparation device 46. In such a case, the residual cup discharged from the winding unit 2 is supplied again to the cup preparation device 47 via the branch section 45.

The device 48 serves to find the yarn end in a cup 9 that is not completely wound in the ring spinning machine 30 or in a cup 9 that is not fully unwound in the winding unit 2 and has a residual winding. The yarn end is then located in the region of the cup cone 20. The device 48 has a yarn end catching device 51, which is movable along a guide 52. This allows the yarn end catching device 51 to move up and down in the direction of arrow 54 in the longitudinal direction of the cup 9. In order to catch the yarn end, the yarn end catcher 51 is then moved to the height of the cup cone and the suction air is supplied by means of the negative pressure supply 53.

According to the invention, the position of the cup cone 20 is determined from information on the spinning progress. The control system 55 is used to detect, store and evaluate information regarding the spinning process. This allows the determined position of the cup cone 20 to be utilized in the complex system 60 at any time.

The spinning progress is detected using the spinning parameters and the yarn breakage detected in the spinning unit. In order to obtain the position of the cup cone 20, first, it is important to detect the ring rail movement which is one spinning parameter. This is because the ring rail wraps the thread in the region of the cup cone 20 and the position of the cup cone 20 changes corresponding to the ring rail movement. In a cup that is wound without any defects, the position of the cup cone 20 corresponds to the last position of the ring rail before the formation of the reserve winding (Hinterwindung). When a yarn breakage that cannot be eliminated by the end of doffing (Abzug) occurs, the position of the cup cone 20 of this cup corresponds to the position of the ring rail when the yarn breakage occurs. The thread breakage can be monitored by monitoring the ring traveler 31 as is known. This is because the ring traveler 31 that rotates during normal operation stops when the yarn breaks. The ring rail 27 of the ring spinning machine 30 is driven in the center. That is, the ring rail 27 continues its movement when the yarn is broken in the spinning unit 50. Since the yarn breakage elimination in the ring spinning machine 30 is usually performed manually, a certain amount of time elapses before the yarn breakage is eliminated.

With the information provided, it is already possible to determine the position of the cup cone 20 of the doffed cup from the ring spinning machine 30. In a subsequent step of the processing of the cup 9, in order to be able to detect changes in the position of the cup cone 20, a tie or relationship is already formed during the spinning process between the wound yarn length and the ring rail movement. It is necessary to. The number of rotations of the pair of supply rollers of the stretching unit 38 determines the supply amount (Lieferung) of the ring spinning machine 30. The supply amount is represented by the yarn length per unit time, for example, meters per minute (m/min). The length of the yarn wound around the cup can be easily obtained from the supply amount and the time measurement.

If the ring rail parameters are set in advance, the yarn length for each ring rail stroke can also be used instead of the supply amount. In this case, in order to obtain the length of the yarn wound around the cup, it is only necessary to detect the number of strokes of the ring rail 27 at the time of forming the cup. When obtaining the length of the wound-up yarn, it is necessary to further consider the yarn breakage. This is because the yarn is not wound around the cup 9 during the continuation of the yarn break.

If the length of the yarn to be withdrawn is detected during the unwinding of the cup 9 in the winding unit 2, it is always not completely unwound during the unwinding process, in connection with the information mentioned above regarding the spinning process. Also in the cup 9, the position of the cup cone 20 can be obtained.

With the information obtained about the position of the cup 9, it is possible to control the progress or the progress inside the complex system 60 and save the sensor. Accurately recognizing the position of the cup cone 20 during the unwinding of the cup 9 in the winding unit 2 allows the drawer accelerator 23 to descend. The descendable tube of the drawer accelerator 23 is tracked so that the spacing between the tube end and the cup cone 20 is constant. On the basis of the method according to the invention, the winding unit 2 does not require a sensor for detecting the cup cone 20. In the cup preparation devices 46, 47, the yarn end catching device 51 can be moved directly to the position of the cup cone 20. This not only saves a corresponding sensor for detecting or recognizing the cup cone 20, but also increases productivity. This is because the cup cone 20 and thus the thread end can be found quickly. At this time, the present invention not only recognizes the position of the cup cone 20 of the cup 9 just doffed from the ring spinning machine 30, but also detects the cup 9 discharged from the winding unit 2 with the residual wound body. The position of the cup cone 20 can also be recognized.

In the winding unit 2, the drawn yarn is monitored for defects using a clearer (not shown). Accurate recognition of the position of the cup cone 20 during payout makes it possible to adapt the position inside the cup to any defects detected in the yarn. The position of the defect inside the cup corresponds to the position of the cup cone when the defect occurs. Defects in the spinning process can be estimated if the defects are repeated at specific locations inside the cup. The spinning program can be adapted to eliminate defects. At this time, preferably, the spindle rotation speed is reduced at the ring rail height corresponding to the position of the defect inside the cup 9.

The carrier tray 8 of the bobbin/roller carrier system 3 can have a tip that allows identification of a particular cup 9. In this way, the information regarding the spinning process stored in the control system 55 of the specific cup 9 can be associated with the correct cup again in the subsequent processing process. Alternatively, it is also possible to write the information directly on the chip of the carrier tray 8.

Claims (11)

At least one ring spinning machine (30) having a number of spinning units (50) in which the cup (9) is manufactured, and a number of winding units in which the cup (9) is rewound into a twill winding package (11). A method for operating a complex system (60) consisting of at least one winder (1) with (2), the method comprising detecting and storing information about the spinning progress,
At the end of the spinning process, the position of the cup cone (20) of the cup (9) is obtained by using the information about the spinning progress, and the obtained position of the cup cone (20) is determined by the ring spinning machine (30). Method for operating a combined system of at least one ring spinning machine and at least one winding machine, characterized in that it is used in the further processing of said cup (9) externally. 2. The method according to claim 1, wherein the spinning progress is detected using spinning parameters and yarn breakage detected in the spinning unit ( 50 ) of the ring spinning machine (30). The method according to claim 2, wherein the spinning parameters include a value indicating a ring rail movement and/or a yarn length per unit time wound around the cup (9) . Method according to any one of claims 1 to 3, characterized in that in the winding unit (2) of the winding machine (1) the length of the yarn drawn from the cup (9) is detected. The position of the cup cone (20) of the cup (9) located in the winding unit (2) is determined from the information on the spinning progress and the yarn length drawn in each of the winding units (2). The method of claim 4. A draw-out accelerator (23), which is provided in the winding unit (2) and constitutes a balloon restrictor formed as a tube that can be lowered with respect to the cup (9), and a tube end portion of the descendable tube. Method according to claim 5, characterized in that the distance with respect to the cup cone (20) is lowered in relation to the determined position of the cup cone (20). A yarn whose yarn end is movable in order to prepare the cup in a cup preparation device (47) for processing in the winding unit (2) and to prepare the cup in the cup preparation device (47) Capturing with an end catcher (51) and moving the yarn end catcher (51) to the determined position of the cup cone (20) to catch the yarn end. Item 4. A method according to any one of items 1 to 3. The cup (9) that has not been completely paid out in the winding unit (2) is prepared in another cup preparing device (46) for new processing in the winding unit, and the other cup preparing device (46). 46), in order to prepare the cup, the yarn end is captured by using a movable yarn end capturing device (51), and the information regarding the spinning progress and the winding unit (2) are pulled out respectively. The position of the cup cone (20) of the cup (9) that has not been fully paid out is determined from the yarn length and the yarn end capturing device (51) is used to capture the yarn end. Method according to claim 4, characterized in that the cone (20) is moved to the desired position. In the winding unit (2), the defects of the yarn drawn out of the cup (9) are monitored and the determined position of the cup cone (20) is used to detect defects inside the cup (9). 9. A method according to any one of claims 5 to 8 for detecting and storing the position of. In relation to the occurrence of a defect at a specific position inside the cup (9), the spindle rotation speed of the spindle (41) for rotating the cup (9) of the ring spinning machine (30) is set to the inside of the cup. 10. The method of claim 9 , wherein the ring rail height is reduced corresponding to the location of the defect at . A composite system (60) for carrying out the method according to any one of claims 1 to 10, comprising at least one ring spinning machine (10) comprising a number of spinning units (50) for producing a cup (9). 30), at least one winder (1) with a number of winding units (2) for rewinding the cup (9) into a twill package (11), and a control system (55) In the combined system (60), the control system (55) is configured to detect and store information regarding spinning progress,
The control system (55) further determines the position of the cup cone (20) of the cup (9) using the information about the spinning progress at the end of the spinning process, and the control of the cup cone (20). Combined system, characterized in that the determined position is adapted for use in further processing of the cup (9) outside the ring spinning machine (30).

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