CN114959969A - Method for operating a textile machine and textile machine - Google Patents

Abstract

In a method of wiring (12) at a workstation (2) of a textile machine (1), a plurality of sub-steps are performed in succession at the workstation (2) to perform a piecing process, wherein at least one sub-step is performed independently in time from the other sub-steps. The workstation (2) has at least one individually driven working mechanism (3) and at least one positioning drive (22) for the at least one working mechanism (3), and the at least one temporally independently performed sub-step comprises a home-position operation of the at least one positioning drive (22). In a corresponding textile machine (1) having a plurality of workstations (2) of the same type, which are arranged side by side on at least one longitudinal side of the textile machine (1), and at least one control unit (13), the control unit (13) is designed to operate the textile machine (1) according to the method.

Description

Method and textile machine for operating a textile machine

technical field

The invention relates to a method for wiring at a work station of a textile machine, in which a plurality of sub-steps are executed successively at the work station for the execution of a piecing process, wherein at least one sub-step is executed independently of the other sub-steps in time. Furthermore, the invention relates to a corresponding textile machine having a large number of workstations of the same type and at least one control unit arranged side by side on at least one longitudinal side of the textile machine.

Background technique

Such a textile machine is designed either as a spinning machine for producing yarn or as a winder for winding already produced yarn. A textile machine has a large number of workstations of the same type, which are arranged side by side on one or both longitudinal sides of the textile machine. The workstations of a textile machine have many working mechanisms for producing or processing yarns or threads, such as spinning units, take-off units and winding units. In addition, the workplace has working mechanisms to restore it in the event of an interruption in routine operation, i.e. to perform service operations such as splicing processes (splicing or splicing) and changing spools. Examples of this include suction nozzles for finding thread ends, blowing nozzles for cleaning purposes, or also working mechanisms for thread processing.

In order to carry out the jointing process, the working mechanism requires a certain amount of energy resources, i.e. electricity, compressed air or negative pressure. However, since the total energy resources available on the textile machine are limited, only a certain number of workstations can be simultaneously provided with energy resources. It is therefore implemented in the prior art that workstations requiring energy resources request them. As long as the total available energy resources are not exceeded, the control unit allocates the requested energy resources to the workstations. Conversely, requests from workstations that exceed available energy resources are delayed. As a result, the connection process can usually only be performed simultaneously at one or two workstations. As a result, other workstations have very long waiting times until the joining process can be performed and production can be resumed again. This is disadvantageous, especially when a textile machine or a production group of textile machines is started, in which several workstations are waiting for piecing. The splicing process consists of several sub-steps, which are carried out successively at the workstation. On this basis, DE 10 2016 106 107 A1 proposes to divide a service operation, eg a splice procedure, into subsequences, and accordingly not to request and allocate resources for the entire service operation or the entire splice procedure, but only for the corresponding subsequence. When the energy resources required to execute the subsequence are available, the pending subsequence is executed independently of the other subsequences of the corresponding service operation. Thus, subsequences can be processed even if sufficient energy resources are not yet available for the entire service operation. For example, during the splicing process, wire finding is performed independently of the running station. As a result, energy resources are better utilized and service operations at the workstations can be performed faster overall.

SUMMARY OF THE INVENTION

The aim of the present invention is to further improve the prior art and reduce the unproductive downtime of the workstations.

This task is solved by a method and a textile machine with the features of the independent patent claims.

In a method of wiring at a work station of a textile machine, in order to carry out the piecing process, a plurality of sub-steps are carried out successively at the work station. At least one sub-step is performed independently of the other sub-steps in time. The invention proposes that the workstation has at least one individually driven working mechanism and at least one positioning drive for the at least one working mechanism, and that the at least one temporally independent substep comprises the at least one Locate the home run of the drive.

The respective textile machine has a large number of workstations and at least one control unit of the same type arranged side by side on at least one longitudinal side of the textile machine. In this case, the workstations each have at least one individually driven working mechanism and at least one positioning drive for the at least one working mechanism. The at least one control unit is now designed to operate the textile machine according to the method.

In the context of the present application, a piecing process is understood to mean a piecing process on a spinning machine and a splicing process on a spinning machine or winding machine. In addition, the splicing process includes splicing after wire breakage and splicing on empty tubes with sample lines.

In early textile machines, the working members for the production and processing of yarn were usually driven centrally. Likewise, in early textile machines, service operations such as the piecing process were performed either manually by operators or by maintenance devices that could be moved along the workstations. In contrast, in the proposed method or the proposed textile machine, the work station has at least one individually driven working member for producing and/or processing the thread and/or for performing a piecing process driven by a positioning drive. The at least one working element can thus be moved in a targeted manner relative to the work station in order to carry out the relevant service operations or the relevant sub-steps of the joining process and can be precisely positioned for this purpose. To perform the splice process, the positioning drive must first be moved to its home position.

According to the invention, the in-situ operation of the at least one positioning drive now takes place independently of the other sub-steps of the joining process. The present invention has recognized that the in-situ operation can be performed as a separate sub-step temporally separate from the entire rest of the joining process before the working member is actually required for the joining process. By "splitting" the in situ operation in time, the cycle time of the actual splice process can be significantly reduced. For example, a total time saving of approximately 6-8 seconds can be achieved by performing the in-situ run independently of the rest of the splice process in time. In this case, the in-situ operation can already be carried out on the waiting station before the station is arranged for the splicing. This is a significant advantage, especially if multiple jobs are launched in large numbers.

It is therefore also advantageous if the workstation has a plurality of individually driven working mechanisms and a plurality of positioning drives for the plurality of working mechanisms, wherein at least one sub-step executed independently in time comprises a plurality of positioning drives, In-situ operation of all positioning drives is preferred.

It is also advantageous that the textile machine is configured as an open-end spinning machine and that a further sub-step, which is performed independently in time, comprises the preparation of fiber tufts on the relevant workstation. The preparation of the fiber tufts consists in the targeted preparation of the ends of the fiber strands which are conveyed to the spinning station, in which the feed rollers are driven with a specific movement profile and the opening rollers are briefly accelerated to comb the fiber tufts. That is, this sub-step can also be separated in time from the overall splicing process, thereby saving about 5-6 seconds of time in the remaining splicing process performed later.

It is particularly advantageous if the in-situ operation of the at least one positioning drive is carried out as a first sub-step of the joining process. As a result, waiting times during the joining process or during the execution of the remaining sub-steps of the joining process due to the necessary in-situ operation of the at least one positioning drive can be avoided.

It is accordingly also advantageous that the preparation of the fiber tufts is carried out as a first sub-step of the joining process. Here too, waiting times during the subsequent joining process or during the execution of the remaining sub-steps of the joining process can be avoided.

According to an advantageous embodiment of the invention, at least one sub-step, which is executed independently in time, has already been carried out when the workstation is switched off. For example, in the case of a rotor spinning machine, the at least one positioning drive of the work station can already complete its in-situ operation when the work station is closed during pneumatic rotor cleaning.

It is also very advantageous that during and/or after the execution of the time-independently executed sub-steps at the workstation, the associated time-independently executed sub-steps are executed at at least one other workstation. For example, in-situ operation of at least one positioning drive and/or fiber tuft preparation can already be performed on a further workstation during the start of the actual piecing cycle at the workstation. If further workstations then start the actual or remaining splicing process or perform other sub-steps of the splicing process, the cycle time of the remaining splicing process is significantly reduced. Since the first sub-step, which is performed independently in time, can already be performed in parallel with the splicing process of the further workstations, significant time savings can be achieved overall when splicing at several workstations.

It is also advantageous that, in the case of batch splicing of several or all stations of a textile machine, the sub-steps, which are performed independently in time, are carried out simultaneously on a plurality of stations. Such batch splice is performed, for example, when the machine is completely shut down overnight. On machines with multiple production groups, batch splicing is also performed when starting a new production group. In particular, the in-situ operation requires very little power resources here, so that the sub-steps can be carried out simultaneously on several workstations. In the case of batch splices, huge time advantages can be achieved here. Fiber tuft preparation also requires very few resources, so it can also be performed on multiple workstations simultaneously.

For example, it is advantageous, in the case of a textile machine divided into several sections, that the sub-steps, which are performed independently in time, are carried out simultaneously on all the workstations of the section when a plurality of workstations of the textile machine are joined in batches. This is advantageous, for example, when jointly supplying power resources to the workstations of a segment.

If several production groups are set up on the textile machine, it is also conceivable that, in the case of batch splicing of several workstations of the textile machine, substeps which are executed independently in time are executed simultaneously on all workstations of the production group

It is also advantageous that, in the case of a textile machine with two mutually opposite longitudinal sides, when a plurality or all of the stations of the textile machine are batch-joined, on all stations of at least one longitudinal side of the textile machine, preferably The sub-steps, which are performed independently in time, are performed simultaneously on all workstations on both longitudinal sides of the textile machine. In this way, a particularly large amount of time can be saved with respect to a method in which all sub-steps of the coupling cycle are executed immediately one after the other.

According to an alternative embodiment, it is advantageous if, during batch splicing of several stations of a textile machine, the temporally staggered execution of the temporally staggered execution of the temporally staggered operation of the plurality of stations, preferably at regular time intervals Substeps that execute independently. Even if the associated substeps overall require few resources, the resources available may not be sufficient if the substeps are executed concurrently on many workstations. Thereby, better utilization of resources can be obtained by staggering in time, and time can still be saved by temporally separating at least one independently executed sub-step.

It is advantageous, for example, in the case of a large number of workstations to be activated, to carry out the drive-in-place of a particular drive continuously, ie from one workstation to another job with a slight delay.

Description of drawings

Other advantages of the present invention are described in the following examples. The figures show schematically:

Figure 1 shows an overview of the front view of the textile machine, and

Figure 2 shows a detail of the work station of the textile machine in a partially cut-away side view.

Detailed ways

In the following description of the exemplary embodiments, identical features or features that are at least comparable in terms of their design and/or mode of operation are provided with the same reference numerals. Furthermore, these are described in detail only when first mentioned, and only the differences from the already described embodiments are discussed in the following embodiments. Furthermore, for the sake of clarity, often only one or only a few are labeled for several identical components or features.

FIG. 1 shows a textile machine 1 in a schematic front view. The textile machine 1 has a large number of workstations 2 arranged side by side. The workstations 2 are here divided into structural groups, so-called sections 19 , in a manner known per se, as indicated by the bold borders. In the present case, only the workstations 2 on one longitudinal side 20 of the textile machine 1 are visible. However, the textile machine 1 can also be constructed as a double-sided machine, wherein the workstations 2 are also arranged on the longitudinal side 20 opposite the longitudinal side 20 shown.

Each workstation 2 has a number of different components and a working mechanism 3, which can be driven by means of a positioning drive 22 (see FIG. 2), with which the wire 12 can be produced or manipulated or a joining process can be performed. In the present case, the workstations 2 each have a feed device 6 for conveying the fibrous material 11 , a feed-out device 16 for the wire 12 and a winding device 9 , by which the wire 12 is wound on a spool 10 .

In the present example, the textile machine 1 is constructed as a rotor spinning machine and accordingly has a feed roller 5 and an opening roller 4 as feed devices. In the present case, the delivery device 16 is constructed as a spinning device 7 with a spinning rotor (see FIG. 2 ). In the present case, the produced thread 12 is drawn by means of the drafting device 8 from the spinning device 7 or the feeding device 16 and conveyed to the winding device 9 where it is wound onto the spool 10 .

The winding device 9 contains as a traversing drive thread guide 25 of the working mechanism 3, which thread guide can be driven by means of a positioning drive 22 (see FIG. 2). As an alternative to the embodiment embodied as a rotor spinning machine, the textile machine 1 can also be designed as an open-end spinning machine or another spinning machine. The feeding device 6 in this case comprises, for example, a drafting system (not shown). The textile machine 1 can also be designed as a winder. The feeding device 16 in this case comprises an unwinding spool (not shown).

The enumeration of components and working mechanisms 3 should not be construed as exhaustive. For example, there may be other components and working mechanisms 3 for handling the thread 12, for connecting the thread 12, for cleaning the spinning device 7 or other components of the textile machine 1 or for other activities. The components and working mechanism 3 may include, for example, a mouthpiece, a suction nozzle 21 (see Fig. 2) and movable members. A further working mechanism 3 driven by means of a positioning drive is shown by way of example in FIG. 2 .

The components and working bodies 3 require energy resources, in particular compressed air, negative pressure and electricity, for their operation, which are supplied to them in different ways. For example, the supply of negative pressure is supplied via one or more negative pressure channels 14 extending along the workstation 2 and loaded by a negative pressure source 15 . The other components and the working mechanism 3 are supplied with compressed air via a compressed air line 17 extending along the workstation 2 and a compressed air source 18 . Furthermore, supply lines (not shown) for supplying current are provided.

Furthermore, the textile machine 1 has a control unit 13 which controls the processes on the textile machine 1 as a whole. In the present case, each workstation 2 also has a control unit 13 , which controls the individual working units 3 and is connected to the central control unit 13 of the textile machine. Additionally or alternatively, there can also be one control unit per segment 19 .

The workstation 2 of the textile machine 1 is preferably constructed to be at least partially self-sufficient. This means that each workstation 2 is able to carry out the joining process at least independently.

If the workstations 2 are constructed to be completely self-sufficient, they have several individually driven components and several working mechanisms 3 driven by means of positioning drives 22 (see FIG. 2 ) for the production line 12 . On such textile machines 1 equipped with self-contained work stations 2, it is also possible to divide the work stations 2 into different production groups 28, irrespective of which sections 19 the work stations are divided into. The workstations 2 belonging to a production group 28 are here linked in that they produce the same product or the same line 12 .

FIG. 2 shows the workstation 2 of the textile machine 1 in a schematic side view. In this case, the work station 2 is also designed as the work station 2 of the rotor spinning machine. However, as mentioned above, the textile machine 1 may also be other spinning or winding machines. In addition to the thread guide 25 already described in connection with FIG. 1 , the suction nozzle 21 , the shut-off valve 27 , the thread catcher 26 and the exchangeable measuring head 24 are shown in the present case as the working mechanism 3 . All working mechanisms 3 of the workstation 2 can each be driven individually by means of a positioning drive 22 . In contrast, said components of the work station 2 can be both stationary and movable by means of drives (not specified) with respect to the textile machine 1 or with respect to the work station 2 . However, the present invention only concerns the working mechanism 3 driven by means of the positioning drive 22 .

If a splicing process is now to be carried out at the workstation 2 , the spool-side wire end must be grasped for this and ready for connection to the output-side wire end or feeding it to the dispensing device 16 . This is done by means of the working mechanism 3 driven by means of the positioning drive 22 . The following takes the workstation 2 of the rotor spinning machine as an example to illustrate the piecing process and the function of the working mechanism 3:

After the thread is broken, first, the thread ends on the bobbin side accumulated on the surface of the bobbin 10 are found by the suction nozzle 21 . In this case, the suction nozzle 21 is transferred from the home position to the thread take-up position by its positioning drive 22 . Furthermore, the shut-off valve 27 is opened by its positioning drive 22 in order to generate suction in the suction nozzle 21 . For this purpose, the thread guide 25 is moved by its positioning drive 22 to, for example, the edge of its traversing area. Once the thread take-up is complete, the shut-off valve 27 is closed again by the positioning drive 22 . As soon as the thread end is sucked into the suction nozzle 21 , it is caught there by the thread catcher 26 and is returned directly to the spinning device 7 by it, or is handed over to the delivery device 16 or to further work at the workstation 3 Mechanism 3 or another component. For this purpose, the thread catcher 26 is transferred by its positioning drive 22 from the home position shown in solid line to the transport position shown in dashed line. Movement of the wire catcher 26 simultaneously inserts the wire 12 into the traverse measuring head 24 . For this purpose, the measuring head 24 is moved by its positioning drive 22 into the yarn receiving position. In the present example, the measuring head 24 has a blowing unit (not shown here, only the connection to the compressed air line 17 is shown here). The wire guide 25 is then periodically moved to the wire receiving position to receive the newly attached wire 12 . After being hooked up, the line 12 then resumes its original course as shown at the workstation 2 .

It goes without saying that the enumeration of the working mechanisms 3 and the piecing procedures are only to be understood as examples, and that other working mechanisms 3 and other procedures can be provided on other textile machines 1 .

In order to determine their position, the positioning drive 22 must perform an in-situ operation for the splice process. According to the prior art, the positioning drive 22 performs an in-situ operation as soon as the joining process should be performed at the relevant workstation 2 . According to the invention, it is now provided that at least one, preferably several or even all of the positioning drives 22 execute in-situ operation independently of the other sub-steps of the joining process in time, ie the sub-steps of in-situ operation are temporally different from other sub-steps of the joining process. Substep separation. Thereby, at least in the case of some positioning drives 22, an in-situ operation can already be performed before it is actually needed at the relevant workstation 2. The in-situ operation can thus also be carried out simultaneously with other sub-steps at other workstations 2 or simultaneously with in-situ operation at other workstations 2 . The piecing process can thus be carried out faster overall, which is particularly evident when piecing is to be performed on a plurality of workstations 2 simultaneously or in rapid succession.

The same applies to the sub-steps of tuft preparation. The tuft preparation is carried out, for example, at the workstation 2 of the rotor spinning machine within the scope of the piecing process in order to always produce the same spinning conditions. For this purpose, the feed roller 5 is driven according to a predetermined curve, wherein the tufts are combed for a predetermined period of time. Then, the tufts are pulled back by a predetermined distance by reversing the feeding roller 5 for a short time, thereby separating the action of the loosening roller 4 . This sub-step can also be separated in time from the other sub-steps of the linking process and can be performed independently of them in time.

Thus, when the first workstation 2 starts the splicing process, the further workstation 2 is already able to perform in-situ operation and/or tuft preparation of its one or more positioning drives 22 . The rest of the piecing process at the other workstation 2 can thus be carried out with a much shorter time expenditure, and overall a considerable time saving can be achieved. In this way, up to 15 seconds of time can be saved overall during the piecing process at the second workstation if, for example, the in-situ run and tuft preparation have been carried out in advance. It is also conceivable here to carry out in-situ operation and tuft preparation simultaneously.

The invention is not limited to the embodiments shown and described. Modifications within the scope of the patent claims are also possible, such as any combination of the described features, even if they are shown and described in different parts of the description or the claims or in different embodiments, provided that they are not related to the independent claims. The guidelines contradict.

List of reference signs

1 Textile machine

2 workstations

3 working organizations

4 Open the rollers

5 Feeding rollers

6 Feeding device

7 Spinning unit

8 Drafting device

9 Winding device

10 Spools

11 Fiber Materials

12 lines

13 Control unit

14 negative pressure channels

15 Negative pressure source

16 Sending device

17 Compressed air line

18 Compressed air source

19 Sections

20 Longitudinal side

21 nozzle

22 Positioning the drive

23 Workstation Controller

24 Measuring head

25 Thread guide

26 Thread catcher

27 Globe valve

28 Production Group

Claims (12)

1. A method of wiring (12) at a work station (2) of a textile machine (1), wherein, in order to carry out the joining process, a plurality of sub-steps are carried out successively at the workstation (2), wherein at least one sub-step is carried out independently of the other sub-steps in time, It is characterized in that, The workstation (2) has at least one individually driven working mechanism (3) and at least one positioning drive (22) for the at least one working mechanism (3), The at least one time-independently performed sub-step includes an in-situ operation of the at least one positioning drive (22). 2. The method according to the preceding claim, characterized in that the workstation (2) has a plurality of individually driven working mechanisms (3), each working mechanism having a positioning drive (22), wherein the At least one sub-step, which is performed independently in time, comprises the in-situ operation of a plurality of positioning drives (22) of the workstation (2), preferably all positioning drives (22). 3. The method according to any one of the preceding claims, characterized in that the textile machine (1) is configured as an open-end spinning machine and the further sub-steps, which are performed independently in time, comprise at the work station in question (2) Fiber clusters are prepared on the above. 4. The method according to any of the preceding claims, characterized in that the in-situ operation of the at least one positioning drive (22) is performed as a first sub-step of the joining process. 5. The method according to any of the preceding claims, characterized in that the preparation of the fiber tufts is carried out as a first sub-step of the joining process. 6. The method according to any one of the preceding claims, characterized in that the at least one sub-step which is performed independently in time has already been performed when the workstation (2) is switched off. 7. The method according to any of the preceding claims, characterized in that during and/or after execution of sub-steps performed independently in time at the workstation (2), at least one other workstation (2) The associated, time-independently executed sub-steps are performed. 8. The method according to any one of the preceding claims, characterized in that the time-independently executed sub-times are performed when several or all workstations (2) of the textile machine (1) are batch spliced. The steps are performed on multiple workstations (2) simultaneously. 9. The method according to any of the preceding claims, characterized in that, in the case of a textile machine (1) divided into a plurality of sections (19), in several or all of the textile machines (1) When the workstations (2) are batch spliced, the sub-steps, which are performed independently in time, are carried out simultaneously on all the workstations (2) of the section (19). 10. The method according to any of the preceding claims, characterized in that, in the case of a textile machine (1) having two opposite longitudinal sides (20), when the textile machine (1) has more than one On at least one longitudinal side (20) of the textile machine (1), preferably all the workstations ( 2) The sub-steps that are performed independently in time are performed simultaneously. 11. The method according to any one of the preceding claims, characterized in that when a plurality of or all stations (2) of the textile machine (1) are batch spliced, on a plurality of stations (2) at a time The sub-steps, which are performed independently in time, are performed staggered in time, preferably staggered in time at regular time intervals. 12. A textile machine (1) having a large number of similar work stations (2) arranged next to each other on at least one longitudinal side of the textile machine (1) and having at least one control unit (13), characterized in that Each workstation (2) has at least one individually driven working mechanism (3) and at least one positioning drive (22) for at least one working mechanism (3), And the at least one control unit (13) is designed to operate the textile machine (1) according to the method of any one of claims 1-11.

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