JP6362365B2 - Method for operating a working part of a textile machine for manufacturing a traverse package and a working part for carrying out the method - Google Patents

Description

  The present invention relates to a method for operating a working part of a textile machine for producing a trawl package as described in the premise part of claim 1 and to a working part for carrying out the method according to claim 10.

  A working unit of a textile machine for manufacturing a traverse winding package, comprising a winding device for winding the traverse winding package, and a suction nozzle for receiving the yarn wound on the surface of the traverse winding package after the winding is interrupted, In the context of automatic winding winders, it has been known for a long time and is described in detail in many patent specifications.

  For example, the working unit described in Patent Document 1 has a suction nozzle, which accepts a so-called upper thread wound on the surface of the traverse package after the thread breakage or after the prescribed cut by the thread clearer. Can be inserted into a pneumatically operated yarn splicing device, in which the upper yarn is then spliced with the lower yarn prepared by the gripper tube.

  The suction nozzle movable between the two end positions is pulled by a tension spring and is in contact with the cam plate of a so-called cam plate unit. In this case, the cam plate unit itself is the central drive device of the corresponding working unit It is connected to the. The suction nozzle can be pivoted to the yarn end receiving position by means of a corresponding control of the rotation of the working part drive device and the cam plate unit associated with the working part drive device, at which the suction end The opening of the nozzle is positioned in the region of the surface of the winding package held by the package frame. The suction nozzle comes into contact with a so-called suction nozzle stopper at this yarn end receiving position, and through this suction nozzle stopper, the opening of the suction nozzle and the winding package that rotates in the feeding direction during the yarn end receiving operation. The optimal spacing between the surfaces can be adjusted.

  In order to ensure this optimum spacing at the beginning of the package formation process, i.e. in small winding packages as well as in large winding packages at the end of the package formation process, the suction nozzle stopper is attached to the package frame. By means of a connected lever mechanism, it is guided automatically, ie in relation to the package diameter.

  Such an automatic follow-up mechanical suction nozzle stopper has been shown to be effective in principle in practice, but still has some drawbacks.

  In these known devices, for example, if an obstacle that would be desirable to correct the spacing of the suction nozzle opening relative to the surface of the traverse package occurs at the time of yarn end acceptance, it will first have some relatively cumbersome. Adjustment work is necessary.

  That is, in these apparatuses, each change of the position of the suction nozzle stopper requires time-consuming manual work by an operator. Therefore, in practice, new adjustments of the suction nozzle stopper are often postponed, which often degrades the working efficiency of the corresponding textile machine, based on increasing error trials during yarn end acceptance. It will be.

  In connection with automatic traverse winders, it is further known that the suction nozzles of the working part are each driven by an individual motor, preferably using a step motor.

  For example, in the working section of the automatic traverse winder disclosed in Patent Document 2, the gripper pipe, the suction nozzle, and the yarn splicing device are each driven by an individual motor. In this case, each of the associated drive devices is connected to the working unit control device via an electronic device, and this working unit control device works for operation according to the necessity of the device.

  However, in Patent Document 2, for example, at the time of receiving the yarn end, the opening of the suction nozzle is always positioned at an optimal interval that can be set in advance with respect to the surface of the winding package that rotates in the feeding direction. There is no description on whether this can be guaranteed.

  In the method of operating a working unit of a textile machine for manufacturing a traverse package described in Patent Document 3, a suction nozzle driven by an individual motor is formed on the surface of the traverse package after thread breakage or controlled clearer cutting. In order to receive the wound yarn, it is swung to the preset yarn end receiving position accurately each time. In this case, the suction nozzle is swung to the yarn end receiving position by a driving device that performs a preset number of switching steps each time starting from a clear position that can be detected by the sensor during inward turning. At the yarn end receiving position, the opening of the suction nozzle has an optimally defined optimum spacing with respect to the surface of the winding package.

  The number of steps of the suction nozzle drive device, preferably formed as a stepping motor, is adjusted during the course of the package formation process and takes into account each position change on the surface of the traverse package due to an increase in diameter. That is, the opening of the suction nozzle is positioned at different yarn end receiving positions each time in relation to the existing diameter of the winding package.

  The method described in Patent Document 3 has received very good evaluation in practice, that is, at least a relatively long time or a relatively large number of yarn end acceptance trials in a working part using this known method. On the other hand, the number of successful thread end acceptance trials is extremely high.

  However, even in this known method, the rate of successful thread end acceptance attempts decreases with time. This is because, for example, when the opening of the suction nozzle is positioned at a preset yarn end receiving position, there is a deviation that cannot be recognized at all or almost by the operator. That is, in practice, the suboptimal yarn end receiving position of the suction nozzle opening is usually only when the efficiency of the corresponding textile machine has already been reduced due to an increase in error trials during yarn end receiving. This is because it is recognized.

  In this case, in addition to the suction nozzle interval, there are various other causes for a decrease in the yarn catching rate, such as changes in suction negative pressure, package formation, various paraffin treatments, changes in yarn tension, etc. Must be taken into account. Therefore, changing the position of the suction nozzle only based on the yarn catch rate may be a false method in specific cases.

DE10150590A1 EP0717001B1 DE102006026548A1

  Therefore, an object of the present invention is to eliminate the drawbacks in the prior art and always accurately detect the opening of the suction nozzle for receiving the yarn end when receiving the yarn end of the yarn wound on the surface of the winding package. It is to provide a method or a working unit for performing the method, which can be relatively easily ensured that the yarn end portion is positioned at a presettable yarn end receiving position.

  According to the invention, this problem is solved by the method according to claim 1 or the working part according to claim 9.

  Preferred embodiments of the method according to the invention are described in the dependent claims.

  In order to solve the above-mentioned problems, the method according to the invention adjusts the rotation circuit of the suction nozzle by at least firstly using the individual drive device of the suction nozzle by: Times, the exact position is brought into contact with a known defined reference point, and then the suction nozzle is swiveled back to the position detected by the sensor, i.e. the swivel position, to determine the number of increments required at this time, The number of increments determined at this time is compared with the number of increments determined in advance in the same manner, which is regarded as a reference value, and a correction value is generated by this comparison, and the correction value is determined after the suction nozzle at the yarn end receiving position. This is done by taking into account when positioning.

  Such a method according to the invention, in particular, between the suction nozzle drive and the suction nozzle head, which results in an undesirable change in the spacing of the suction nozzle openings relative to the package surface during the yarn catching process. There is an advantage that it is possible to prevent a decrease in the yarn end portion capture rate based on the mechanical displacement.

  As described in claims 2 to 4, the adjustment of the rotation circuit of the suction nozzle can be introduced automatically within a specific cycle.

  In a preferred aspect of the present invention, the rotation circuit of the suction nozzle is adjusted each time after performing a presettable number of attempts to receive the yarn end of the suction nozzle.

  In another preferred aspect of the present invention, adjustment of the rotation circuit of the suction nozzle is performed each time after a presettable time.

  However, as described in claim 4, it is also preferable to adjust the rotation circuit of the suction nozzle each time after the presettable number of winding packages are manufactured.

  The three aspects described above have proven to be suitable in practice, in which case the aspect as claimed in claim 2 most strongly considers the actual load on the suction nozzle and is therefore very suitable. I think that the.

  According to the fifth aspect of the present invention, the adjustment process according to the present invention is performed when the yarn end portion capture rate is reduced, that is, when necessary, and this is caused by the displacement of the suction nozzle. Can be eliminated. Only when the yarn end catch rate is still not sufficient after adjustment, the working section is inspected for other causes that may be problematic for a decrease in the yarn end catch rate.

  Even when the adjustment can be performed only when necessary as described above, it is preferable to adjust the yarn regularly so as not to decrease the yarn end portion capture rate.

  As is well known, the diameter of a traverse package always changes during the package formation process, so of course the thread end receiving position is adapted accordingly and continuously in different positions. For example, it must be stored as a curve. That is, at the time of adjusting the turning circuit of the suction nozzle, the yarn end portion receiving position is actually moved along this curve while taking into account the last obtained correction value.

  In an embodiment according to claim 6, in order to ensure accurate positioning or adjustment, an incremental counter located in the area of the individual drive of the suction nozzle is used to determine the reference point, the position detected by the sensor and the yarn end. Count the increment to / from the receiving position. Therefore, there is no restriction on the individual drive device.

  Alternatively, according to the seventh aspect of the present invention, a step motor is used as the individual driving device, and a necessary switching step between the reference point and the position of the step motor detected by the sensor (this is finally the same). The step motor is first driven from the position detected by the sensor toward the reference point with more switching steps than expected for that purpose. Let When the suction head of the suction nozzle reaches the reference point, the step motor extinguishes the step. The suction nozzle is then swiveled from this position back to the position detected by the sensor, at which time the switching step for the return path required by the step motor is determined. The number of steps toward the reference point is shortened in subsequent turning processes until the turning process is the same in both directions.

  The use of a stepper motor in the context of the method described above makes it possible to omit the sensor mechanism provided therefor for determining the increment. This is because the step at the time of control of the step motor can be automatically used.

  According to a preferred aspect of the present invention, the reference point where the suction head of the suction head comes into contact is held on the surface of the winding package held on the package frame and in contact with the package driving roller, or on the package frame. Use the surface of the winding tube of the twill package that is in contact with the package drive roller.

  It has been found that when the traverse package used as the reference point has a diameter of 130 mm to 150 mm (Claim 9), the best state can be obtained when adjusting the turning circuit of the suction nozzle.

  Utilizing a traverse package or traverse package tube as a reference point has the advantage that an additional special stopper can be omitted, as well as retaining the traverse package or traverse package tube. Based on the known stable configuration of the package frame, it is also ensured that the reference points are well protected against inconvenient movement or displacement.

  That is, in order to adjust the rotation circuit of the suction nozzle, a traverse winding package having a diameter of 130 mm to 150 mm in the package frame is used, respectively, or the traverse winding package holding the package frame is 130 mm to 150 mm. Adjustments are made if they have a diameter. In both cases, the surface of the twill package forms a known reference point with which the suction nozzle opening can contact.

  Alternatively, in the aspect of the tenth aspect, a gripper pipe positioned at a presettable position in the region of the rotation circuit of the suction nozzle is used as the reference point. For this purpose, a sensor for detecting the adjustment position of the gripper tube can be used.

  In this case, the fact that such a gripper tube is very insensitive to mechanical displacements or movements due to its extremely robust construction is utilized. That is, the gripper tube positions a stable obstacle in the swirl circuit of the suction nozzle, and this obstacle forms an immovable preset reference point due to the opening of the suction nozzle rotating upward.

  In another alternative aspect of the present invention, a stopper that can be advanced in the winding-back housing is used as a reference point.

  Claim 12 describes a working part for carrying out the method according to the invention, the working part being a winding device for winding a traverse package and a suction nozzle that can be driven by an individual motor, A suction nozzle for receiving the yarn wound up on the surface of the winding package after the winding interruption, and a sensor element for detecting the swiveling position of the suction nozzle, and the working unit further has a reference point The suction head of the suction nozzle is movable to the reference point to adjust the position of the suction nozzle, the working unit has a control device, and the control device moves the suction nozzle to the reference point. To determine the increment between the detected turning position and the reference point, and the obtained value is regarded as the reference value. Comparison, the differences that have been identified during this, for subsequent positioning of the suction nozzle in the yarn end receiving position, are designed to be used to obtain the correction value.

  In order to swivel the suction nozzle from its contact position at the reference point back to the rest position or the intermediate swivel position preset by the sensor element, using a reference point with a known exact position from the sensor element and thus the angular distance, How many switching steps need to be performed by the suction nozzle drive device formed as a step motor, and thus how many switching steps are required to reach the optimum yarn end receiving position Can be identified relatively easily.

  Suction nozzles that are pivotally supported are configured with sensor elements, for example permanent magnet inserts, for this purpose in the region of their drive, and these sensor elements swivel together with the suction nozzles, for example windings. It communicates with a sensor that is immovably disposed in the return housing. The reverse arrangement is also possible.

  Alternatively, to detect the number of steps, it is also possible to provide an incrementing device and an incrementing counter that rotate together (Claim 13) or a step motor (Claim 14) in which the switching step is automatically detected. It is.

FIG. 3 is a side view showing a working part of a textile machine for manufacturing a twill wound package in which the method according to the present invention is used, in a state where the opening of the suction nozzle is positioned at the yarn end receiving position after interruption of the rewinding process FIG. It is the schematic which shows the aspect in which the surface of the winding package currently hold | maintained at the package frame is used as a reference point in the state which the suction head is contacting the 1st reference point. It is a figure which shows the aspect in which the suction nozzle is in the state which is contacting the 2nd reference point, Comprising: This 2nd reference point is formed by the gripper pipe | tube located in the preset position.

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

  The working part of FIG. 1 corresponds to the working part which is known with respect to its main components, for example on the basis of DE 102006026548 A1, and which has already been described in detail in this application.

  FIG. 1 shows a textile machine 1 for forming a traverse winding package, in the illustrated embodiment a working part 2 of an automatic traverse winder (Kreuzspulautomat).

  Such textile machines usually have a number of similar working parts 2 between their end points (not shown).

  In these working parts 2, often also called rewinding parts, a spinning cup 3 having a relatively small amount of yarn material, which is usually produced in advance in a ring spinning machine, is rewound onto a large volume traverse winding package 5.

  Such an automatic traverse winder 1 often has a supply device (Logistikeinrichtung) formed as a spinning cup / winding tube conveying system 6. In the spinning cup / winding tube conveying system 6, The spinning cup 3 or the fed empty pipe circulates.

  Of the spinning cup / winding tube conveyance system 6, FIG. 1 simply shows a spinning cup supply section 17, a storage section 18 that can be driven reversibly, a lateral transportation section 19 that leads to the working unit 2, and a winding pipe return section 20. It has only been done.

  Each of the supplied spinning cups 3 is rewound onto the large volume traverse package 5 at the feeding portion AS located in the region of the lateral conveyance section 19.

  For this purpose, the individual working units 2 are known per se and therefore have a variety of devices that enable an orderly operation of the working unit 2 as only a part is shown here.

  As usual, these devices are connected to a computer 31 specific to the working unit via control lines, respectively. The computer 31 itself is connected to the central control of the automatic winding winder 1 via a machine bus 33. Connected to the unit 32.

  As can further be seen from FIG. 1, each working part 2 has in particular a suction nozzle 24 supported in a pivotable manner and a gripper tube 25 likewise supported in a pivotable manner. The suction nozzle 24 is supported so as to be rotatable within a limited range around the turning axis 23, and has an individual drive device 15 formed as a step motor as shown in FIG. The computer 31 is connected to the working unit-specific computer 31 via the control line 36. The suction nozzle 24 further includes a yarn sensor 41, and the yarn sensor 41 is used to inspect whether or not the attempt to receive the yarn end portion of the suction nozzle 24 (hereinafter referred to as a yarn end portion acceptance trial) is successful. can do.

  According to the embodiment shown in FIGS. 1 and 2, a sensor 40, which is formed as a hall sensor, for example, is installed in a fixed position in the region of the drive device of the suction nozzle 24. 40 cooperates with the sensor element 43 or the sensor element 44 (FIG. 2) at a specific turning position of the suction nozzle 24.

  Sensor elements 43, 44 which are preferably permanent magnet inserts are fixed to the suction nozzle 24 so that these sensor elements 43, 44 pivot together with the suction nozzle 24. Whether the drive portion of the sensor nozzle 24 arranged in the region of the turning axis 23 of the sensor nozzle 24 is positioned at a specific turning position using the sensor 40 and the sensor elements 43 and 44 supported so as to be capable of turning. You can check whether or not.

  For example, if the sensor 40 reacts to the sensor element 43, this means that the suction nozzle 24 is in the rest position R. Correspondingly, if the sensor 40 reacts to the sensor element 44, this indicates that the suction nozzle 24 is positioned at the intermediate turning position Z, which is the turning position detected by the sensor. As a result, it works as a starting point for adjustment.

  As further shown in FIG. 1 and generally known, the working part 2 of the automatic traverse winder 1 is typically a yarn tensioning device (Fadenspannvorrichtung), also called a winding device 4, a yarn splicing device 26, and a yarn tensioner, respectively. ) 30, a thread cutting device 27, a thread clearer 28, a thread tension sensor 29, and a lower thread sensor 22.

  The winding device 4 includes a package frame 8 that is movably supported around a pivot axis 12, and the package frame 8 includes a package frame arm having a rotatable winding tube receiving tray (not shown). The winding tube of the traverse winding package 5 can be securely fixed between the two package frame arms.

  In the illustrated embodiment, the surface 35 of the traverse package 5 held in a freely rotatable manner by the package frame 8 is in contact with the package drive roller 9 during the rewinding process, and this package drive roller 9 causes frictional coupling. Taken away. During the rewinding process, the yarn 16 extending from the spinning cup 3 to the traverse package 5 is further traversed between both ends of the traverse package 5 by the yarn traversing device 10. The yarn traversing device 10 is formed in a finger shape, for example, and has a yarn guide 13 that is driven by an individual driving device 14 that is an electric motor.

  Such a yarn traversing device 10 has been known for a long time in the textile machine industry and is described in detail, for example, in DE198585548A1.

  Further, a traverse package transporting device 7 is disposed behind the winding device 4, and the traverse package 5 is unloaded via the traverse package transporting device 7 after completion.

  As further shown in FIG. 1, the suction nozzle 24 can be swung from the rest position R to the yarn end receiving position FA, preferably using an individual drive 15 formed as a step motor. At the yarn end receiving position, the opening 34 of the suction nozzle 24 is positioned with respect to the surface 35 of the traverse package 5 at a specified optimum distance a, for example, a distance a of 5 mm. The traverse package 5 is rotated in the feeding direction 37 at this time.

  As already described in the introduction section, in such a working section 2 that receives a considerable load during the rewinding operation, a deviation or deviation from the original adjustment occurs with time, particularly in a member that receives a particularly strong load. This cannot always be avoided reliably. In other words, in relation to the optimal operation of the working unit 2, the attachment position of a member subjected to a strong load is inspected after a specific time or after a number of rewinding processes, and in some cases it is newly adjusted or adjusted. It is very suitable.

  In the suction nozzle 24 that receives the yarn end portion of the upper yarn wound around the surface 35 of the traverse winding package 5 and interrupts it to the yarn splicing device 26 after the winding is interrupted, for example, there is the following possibility. That is, in this case, the distance a which is important in the yarn end portion acceptance trial, that is, the distance a which defines the distance between the opening 34 of the suction nozzle 24 and the surface 35 of the traverse package 5 changes somewhat. This usually increases the number of error trials when receiving the yarn end.

  In order to avoid the occurrence of error attempts thus occurring from the beginning as much as possible, the method according to the invention detailed below is used.

  Using the method according to the present invention, the change in the optimum spacing between the suction nozzle opening and the traversed package surface is usually already a step where the reduced yarn end catch rate still has no significant effect. Is detected.

  However, it should be considered in this connection that the reduced capture rate may also have a cause other than the wrong yarn end receiving position of the suction nozzle, in this case as another cause. Examples thereof include negative pressure change, package formation, and yarn tension. However, according to the present invention, when this cause is eliminated, other causes can be removed according to the purpose when the yarn catching rate is reduced.

The method shown in FIG. 2 in connection with FIG.
For example, when changing lots, at least one adjustment operation is first performed before the start of the original rewinding process, and during this adjustment operation, the suction nozzle 24 does not have the necessary data that can be received. The yarn end receiving position FA is optimum for this lot. That is, first, a traverse package 5 having a diameter d of preferably 130 mm to 150 mm is formed. This traverse package 5 is used as an adjustment package and is mounted on a package frame. Next, the suction nozzle 24 uses the drive device 15 from, for example, a rest position R detected by a sensor (in this rest position R, the sensor element 43 supported so as to be pivotable is located facing the sensor 40). Or from the intermediate turning position detected by the sensor (in this intermediate turning position, the sensor element 44, which is likewise supported so as to be able to turn, is located facing the sensor 40), is swung further upwards, In this case, the suction head 24 'of the suction nozzle 24 moves at least partly through the turning circuit 21, and the opening 34 of the suction nozzle 24 is preferably shown in FIG. 1 using mechanical spacer means (not shown). As shown in FIG. 5, the optimum distance a for yarn catching is set on the surface of the adjustment package or other traverse package 5. As with respect to 5, it is positioned. In this work step, a switching step required for the individual driving device 15 is required to turn the suction nozzle 24 from the intermediate turning position to the yarn end receiving position FA. The determined number of switching steps of the step motor 5 is recognized as a reference value for the work point, and this reference value is stored in the working unit calculator 31.

  The suction nozzle 24 is then swung upwards by an individual drive formed as a stepping motor 15, this swiveling movement being carried out until the suction head 24 ′ of the suction nozzle 24 contacts the reference point 38; 39. The exact position of this reference point 38; 39 is known as well as the rest position R or the intermediate position Z. For this purpose, the number of steps of the step motor is first selected to be greater than the number of steps expected based on the known position. When the traversing package 5 that is held by the package frame 8 and is in contact with the package driving roller 9 is used as the reference point 38, the suction head 24 'is traversed in the region of the opening 34 of the suction nozzle 24 when turning upward. It is stopped at the surface 35 of the package 5. The step motor 15 then loses the step. The suction nozzle 24 is then turned back to its rest position R or intermediate position Z, at which time the number of switching steps required by the step motor 15 to reach the position detected by the sensor is detected.

  The adjustment movement (Kontrolllauf) described above is then repeated, i.e. the suction nozzle 24 is swung upwards with a new but somewhat reduced number of switching steps and then swung back. In this case, the necessary switching steps of the step motor 15 are counted when the suction nozzle 24 turns upward and when the suction nozzle 24 returns. In the adjustment movement, the number of switching steps of the step motor 15 when the suction nozzle 24 is swung upward is changed according to the number of switching steps when the suction nozzle 24 is swung upward. It repeats until it corresponds to the number of steps. This is an index for the opening 34 of the suction nozzle 24 to reach the surface 35 of the traverse package 5 without step loss.

  The adjustment value obtained in this way is an adjustment target value.

  Later, after the lot has progressed for some time and a specific number of switching has been performed, or after a preset number of traversed packages have been completed, further adjustment movements are performed by the suction nozzle 24, During these adjustment movements, an adjustment value for the number of steps is determined, and this adjustment value enables information or judgment (Aussage) regarding the current adjustment state of the suction nozzle 24. In other words, in order to obtain an optimum distance between the suction opening 34 and the surface 35 of the traverse package 5, it is required how many times the driving device has moved with respect to the actual angular position of the suction head 24 '.

  A correction value is obtained by collating this adjustment actual measurement value with the adjustment target value obtained first, and this correction value is a position detected by the sensor, in this case, the intermediate turning position Z and the yarn end receiving position. Used during subsequent adjustments of the turning circuit of the suction nozzle 24 with the FA. In the simplest case, this number of steps is determined in the trigonometry.

  Of course, it is necessary to take into account that the diameter of the traverse package always changes during the package formation process. Therefore, of course, the actual yarn end receiving position FA of the suction nozzle 24 continuously changes or follows, for example, a preset curve, that is, a curve that is geometrically generated from a diameter change that is always monitored. Must be moved. That is, after one adjustment, the optimized yarn end receiving position adapted to the instantaneous diameter, and the yarn end at the start of the lot in which the suction nozzle opening is spaced from the surface 35 of the traverse package 5 It is necessary to multiply the number of steps corresponding to the part receiving position by a correction value.

  That is, at the time of adjusting the turning circuit of the suction nozzle, the movement of the yarn end portion receiving position along this curve is actually performed while taking into consideration the correction value obtained last.

  For the sake of completeness, in connection with this, the sensor 40 and the pivotable sensor element 44 are used to move the suction nozzle 24 from the intermediate pivot position Z to the yarn end receiving position FA. The number of switching steps that the individual drive 15 of the suction nozzle 24 needs to carry out is as small as possible, however, even in a full-pile traverse package, there is still an intermediate swivel position and a thread end receiving position. It is preferred that it be arranged in a manner sufficient to leave a turning circuit in between.

  When the time for adjustment of the turning circuit of the suction nozzle 24 is reached, an interruption of the rewinding process in the diameter range of the traverse package 5, for example, is introduced for carrying out the adjustment.

  In particular, when it is indicated that adjustment outside the preset cycle is performed based on the decrease in the capture rate, the suction head 24 of the suction nozzle 24 is required on the basis of the instantaneous diameter of the traverse package 5 each time. The thread end receiving position of ′ can be used as a basis. However, for example, at the start of a lot, the number of steps between the working point, i.e. the optimum distance a of the suction opening 34 with respect to the surface 35 of the winding package 5 and the reference point 38 on the surface 35 can be determined and stored. Is possible. This number of steps remains equal regardless of the traverse package diameter and the movement or displacement of the suction nozzle 24 from the associated drive. In this way, the opening 34 of the suction nozzle 24 is always automatically and accurately again with respect to the surface 35 of the traverse winding package 5 even if movement or displacement in the region of the suction nozzle 24 occurs during the rewinding operation. In other words, it is guaranteed that positioning is performed at the optimum distance a.

  In FIG. 1, unlike FIG. 2, the disc 42 is not shown with an incremental device cooperating with the sensor 45 around it. In the structure of FIG. 1, a step motor 15 is used, which does not require an additional sensor device because the controlled step forms the basis, and for that purpose the method described above, ie during adjustment It is also possible to use the above method in which the end positions are obtained sequentially. On the other hand, the sensor 45 serves as an increment counter for accurately specifying the angular position of the disc 42 connected to the individual driving device 15 '.

  Therefore, the individual driving device 15 ′ shown in FIG. 2 may be an EK motor, for example, instead of a step motor. Here, since the sensor 45 counts the increment, it is only necessary to travel once through the adjustment point.

The method shown in FIG.
In the embodiment shown in FIG. 3, the reference point 39 is formed by the gripper tube 25, which is positioned at a known position S, which is preset, for example, by the sensor element 47 and the associated sensor element 46. Has been. In this embodiment, before the adjustment movement of the suction nozzle 24 is started, the gripper pipe 25 is first moved from its rest position RS along the turning circuit 48 to the upper position S set in advance immovably. This position S forms a reference point 39 for the opening 34 of the suction nozzle 24 during the adjustment movement. That is, during this adjustment movement, the suction nozzle 24 is swung by the individual driving device 15 from the rest position RS detected using the sensor 40 and the sensor element 43 to the contact position of the suction nozzle 25. In this case, it is necessary for this purpose. Increments are counted by one of the methods described above.

  The suction nozzle 24 is then swiveled back to the rest position R again as described above in connection with the embodiment of FIG. Similarly, the gripper tube 25 also returns to its rest position RS.

  As an alternative reference point 49 additionally shown in FIG. 3, a stopper that can advance in the housing 2 ′ of the winding-up part 2 can act, and this stopper is adjusted by the suction head 24 ′ of the suction nozzle 24. It is arranged so that it can move toward the stopper. It should be mentioned here that the suction head 24 'does not necessarily have its opening 34 moved to the reference point, so that other areas of the surface of the suction head 24' move to the reference point. It may be.

  In any case, the important thing in this case is as follows. In other words, in this case, the distance between the positions detected by the sensors of the sensor element directly coupled to the drive device is always compared with the stopper of the suction head 24 ′ at the stationary reference point for adjustment. The turning circuit detected by the sensor in the region of the drive device can be adjusted so that any mechanical movement or displacement in the middle between the drive device and the suction head disappears.

  In addition, other parts of the suction nozzle 24, which move undetectably relative to the suction head 24 ', run towards a correspondingly arranged reference point (in this case of course not the traversing package 5). Such configurations are also included within the scope of the present invention. However, the accuracy of adjustment decreases as the distance to the suction head increases.

  DESCRIPTION OF SYMBOLS 1 Textile machine, 2 Working part, 3 Spinning cup, 4 Winding device, 5 Twill winding package, 6 Cup and winding tube conveyance system, 7 Twill winding package conveyance device, 8 Package frame, 9 Package drive roller, 10 Yarn traverse Device, 11 Conveying pan, 12 Rotating axis, 13 Thread guide, 14 Individual drive device, 15 Individual drive device, 16 Thread, 17 Spinning cup supply section, 18 Storage section, 19 Lateral transport section, 20 Winding pipe return section, 21 Rotation circuit, 22 Lower thread sensor, 23 Swivel axis, 24 Suction nozzle, 24 'Suction head, 25 Gripper tube, 26 Thread splicing device, 27 Thread cutting device, 28 Thread clearer, 29 Thread tension sensor, 30 Thread tensioning device, 31 computers, 32 central control Unit, 33 Mechanical bus, 34 Opening, 35 Surface, 36 Control line, 37 Feeding direction, 38,39 Reference point, 40 Sensor, 41 Thread sensor, 42 Disc, 43,44 Sensor element, 48 Rotation circuit

Claims (11)

A method of operating a working unit of a textile machine for manufacturing a traverse package, the working unit comprising a winding device that winds the traverse package and a suction nozzle that can be driven by an individual motor The suction nozzle is positioned at a yarn end receiving position for receiving the yarn wound on the surface of the traverse package after the winding is interrupted, and at the yarn end receiving position, the suction nozzle is positioned at the yarn end receiving position. The opening has a predetermined spacing with respect to the surface of the traverse package, and the suction nozzle is swung using the individual drive device of the suction nozzle, starting from the swiveling position detected by the sensor. And after stopping the predetermined number of increments of the individual drive device, the method is stopped at the yarn end receiving position,
The adjustment of the turning circuit (21) of the suction nozzle (24) is made by:
The suction head (24 ') of the suction nozzle (24) is first defined at least once using the individual drive (15) of the suction nozzle (24) to a defined reference point (38) whose known position is known. 39; 49) and then swiveling the suction nozzle (24) back to the swivel position detected by a sensor to determine the number of increments required at this time;
The number of increments determined at this time is compared with the number of increments determined in advance in the same way, which is regarded as a reference value
This comparison produces a correction value, and the correction value is taken into account during subsequent positioning of the suction nozzle (24) at the yarn end receiving position, producing a traverse package A method of operating the working part of a textile machine.   Adjustment of the turning circuit (21) of the suction nozzle (24) can be performed each time after performing a presettable number of yarn end portion acceptance trials of the suction nozzle (24), or can be preset. The method according to claim 1, wherein the method is carried out each time after a certain time, or after each production of a pre-settable number of the twill winding packages.   The method according to claim 1, wherein the adjustment of the turning circuit (21) of the suction nozzle (24) is performed as required.   The method according to claim 1, wherein the increment is determined using an increment counter located in the region of the individual drive (15) of the suction nozzle (24). Using the step motor (15) as an individual drive, the step motor (15) is first used to determine the required switching step between the reference point and the position of the step motor (15) detected by the sensor. Starting from the position detected by the sensor, and operating toward the reference point with a number of switching steps greater than the number of switching steps expected for that purpose, and at this time, the suction of the suction nozzle (24) Moving the head (34) toward the reference point (38; 39; 49), stopping the step motor (15) at the reference point (38; 39; 49);
The suction nozzle (24) is then swung back from this position to the position detected by the sensor, at which time the stepping motor (15) requires the switching steps for the return path, The step motor (15) is rotated in both the direction from the starting point to the reference point and the direction from the reference point to the starting point by turning the turning process from the starting point to the reference point with a slightly reduced number of switching steps each time. The method of claim 1, wherein the method is repeated until the number of switching steps is the same.   A winding package which is held by the package frame (8) and is in contact with the package driving roller (9) as a reference point (38) where the suction head (24 ') of the suction nozzle (24) contacts. Use the surface (35) of (5) or the surface of the winding tube of the traverse package (5) held on the package frame (8) and in contact with the package drive roller (9). Item 6. The method according to Item 1, 4 or 5.   The method according to claim 6, wherein the twill package (5) used as the reference point (38) has a diameter (d) of 130-150 mm.   As the reference point (39), a gripper pipe (25) positioned at a preset position (S) in the region of the turning circuit (21) of the suction nozzle (24) is used, or a winding part housing 6. The method according to claim 1, 4 or 5, wherein an advanceable stopper in (2 ') is used. A working unit of a textile machine for manufacturing a traverse package, a winding device that winds the traverse package, and a suction nozzle that can be driven by an individual motor, the surface of the traverse package after the winding is interrupted The working unit for carrying out the method according to claim 1, comprising: a suction nozzle for receiving the yarn wound up around the sensor; and a sensor element for detecting a turning position of the suction nozzle.
The working part (2) has at least one reference point (38; 39; 49), at which the suction head (24 ') of the suction nozzle (24) is connected to the suction nozzle (24). The working unit has a control device, which controls the movement of the suction nozzle to the reference point, and detects the swiveling position and the reference point. And the obtained value is compared with the number of increments determined in advance in the same way, which is regarded as a reference value, and the difference confirmed at this time is compared with that of the suction nozzle at the yarn end receiving position. A working part of a textile machine for producing a twill package, characterized in that it is designed to be used for obtaining a correction value for subsequent positioning.   10. The operation according to claim 9, wherein in the region of the individual drive device of the suction nozzle, an increment device corresponding to an increment counter arranged adjacent to the portion that rotates together when the suction nozzle rotates is attached. Department.   The working unit according to claim 9, wherein the individual driving device is a step motor, and the control device is designed to monitor the number of steps in both rotation directions of the step motor.

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