CN114059204A

CN114059204A - Method for operating a textile machine and textile machine

Info

Publication number: CN114059204A
Application number: CN202110826112.2A
Authority: CN
Inventors: B·巴尔曼; Th-G·迈尔; A·斯蒂芬; M·马莱克; H·威德纳; F·霍廷格; 斯蒂芬·维德纳·伯恩博格; 克里斯汀·凯特纳
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG
Priority date: 2020-07-31
Filing date: 2021-07-21
Publication date: 2022-02-18
Also published as: EP3945149A1; DE102020120312A1

Abstract

A method for operating a textile machine (1), in particular a spinning machine or a winding machine, having a plurality of working places (2) of the same type arranged side by side and having at least one suction channel (3) extending along the working places (2), which suction channel (3) is connected to a negative pressure source (4) and is supplied with a working air flow during normal operation of the textile machine (1), wherein a cleaning air flow (5) is briefly supplied to the suction channel (3). At least several of the plurality of working positions (2) are opened a shut-off element (6) for disconnecting the negative pressure-consuming working means (7) and/or the negative pressure-consuming maintenance means (8) of the respective working position (2) from the suction channel (3), whereby a cleaning air flow (5) is generated, and/or the rotor and/or the cover element (27) of the combing roller housing (25) are opened at the several working positions (2) in order to generate an increased cleaning air flow (5). A corresponding textile machine has a control unit designed for carrying out the method according to any one of the preceding claims.

Description

Method for operating a textile machine and textile machine

Technical Field

The invention relates to a method for operating a textile machine, in particular a spinning machine or a winding machine, having a plurality of working positions of the same type arranged next to one another and having at least one suction channel extending along the working positions, which is connected to a source of underpressure and to which a working air flow is applied during normal operation of the textile machine, wherein in the method a cleaning air flow is briefly applied to the suction channel.

Background

In the case of textile machines, such as spinning or winding machines, it is often the case that a section of the yarn being manufactured or to be wound needs to be cut off. This can occur, for example, when the yarn is cut and then the yarn is pieced together, or when the cut is cleaned (reingerschnitt). Likewise, when jumping to an empty sleeve, waste yarn tends to accumulate. The cut yarn pieces need to be disposed of, which is usually done by suction with suction equipment of the textile machine. In the spinning device of the spinning machine, the fiber material is accumulated again and again as waste material to be disposed of. This fibrous material is also sucked by means of a suction device of the textile machine and conveyed to a disposal device. As a result, during operation of the textile machine, undesirable flying (verfluugung) and accumulation of fiber and yarn material can occur in the suction channel, so that the suction channel needs to be cleaned.

German patent application DE4240233a1 discloses a method and a device for operating a suction device of a spinning machine. The suction device comprises at least one suction channel which corresponds to a plurality of suction locations and is connected to a suction device. For cleaning the suction channel, a large suction cross section is opened at intervals, and a strong air flow is briefly applied to the suction device. For this purpose, the suction channel has a passage which can be closed off by an additional cover or slide and which has a large attachment cross section (Ansatzquerschnitt).

Disclosure of Invention

The object of the invention is to simplify the method already disclosed in the prior art. The invention also aims to provide a correspondingly simplified textile machine.

The above object is achieved by a method and a textile machine having the features of the independent claims.

The invention relates to a method for operating a textile machine, in particular a spinning machine or a winding machine, having a plurality of working positions of the same type arranged next to one another and having at least one suction channel extending along the working positions, which is connected to a source of underpressure and to which a working air flow is applied during normal operation of the textile machine. In the method, a cleaning gas flow is briefly applied to the suction channel.

The invention proposes that, in at least some of the plurality of working positions, a shut-off element for disconnecting the working means consuming the negative pressure and/or the maintenance means consuming the negative pressure of the respective working position from the suction channel is opened, whereby the cleaning air flow is generated. Alternatively or additionally, the invention provides that the cover element of the rotor and/or of the combing roller housing is opened in the several operating positions in order to generate an increased cleaning air flow. This releases the larger suction opening in the several operating positions and enables a correspondingly higher volume flow for the cleaning air flow. This is particularly advantageous in the case of spinning devices or rotors and/or combing roller housings which cannot be disconnected from the negative pressure by means of a shut-off element and are therefore continuously sucked. In this way, a clean air flow can be generated only with the components already present in the textile machine. The textile machine thereby has a structurally simple and cost-effective construction. This eliminates the need for expensive cleaning equipment for the suction device. Furthermore, advantageously, it is thereby possible to clean not only the suction channel itself but also the connection channel between the suction channel and the working component and/or the service component. Finally, it is also advantageous that the cleaning efficacy can be influenced on the basis of the number of working and/or maintenance components, and as the case may be, also on the basis of the type of the shut-off element that is opened.

The invention also proposes a textile machine, in particular a spinning machine or a winding machine, having a plurality of working stations of the same type arranged side by side and at least one suction channel extending along the working stations, which is connected to a source of underpressure and to which a working air flow is applied during normal operation of the textile machine. The textile machine also has a control unit designed to carry out the method.

For this purpose, the shut-off elements in the several operating positions are preferably opened simultaneously, so that a cleaning air flow is generated. However, it is also possible to open the closure element and/or the cover element sequentially, i.e. at short time intervals, until the desired number of closure elements is finally opened.

Advantageously, the number of working positions at which the shut-off element and/or the cover element are opened is located at a first end of the textile machine facing away from the source of underpressure. This enables the cleaning air flow to flow over nearly the entire length of the suction channel, and thus removes fiber accumulations, thread pieces and the like from the suction channel over its entire length. However, in particular for cleaning the connecting channel between the suction channel and the working component and/or the maintenance component consuming the negative pressure, it is also possible to open a shut-off element, for example, in the central region of the textile machine or in the working position close to the negative pressure source.

Furthermore, the textile machine is advantageously designed as a rotor spinning machine, wherein each work station has a rotor spinning device connected to the suction channel, which can be disconnected from the suction channel by means of a shut-off element. In this case, the shut-off element and/or the cover element of the rotor spinning device are opened in the several operating positions. These elements are already provided on the textile machine or rotor spinning machine and can be advantageously used to generate a clean air flow.

In addition or alternatively, it is advantageous if each of the working positions has a suction nozzle and/or a yarn storage nozzle, which can be disconnected from the suction channel by means of a shut-off element. In the method, the stop element of the suction nozzle and/or the stop element of the yarn storage nozzle are opened at the plurality of working positions. These elements must also be provided on the textile machine and can advantageously be used for generating a clean air flow. If the suction nozzle and/or the yarn storage nozzle is connected to its own suction channel exclusively for the suction nozzle and/or the yarn storage nozzle, this suction channel can advantageously be cleaned thereby. If, on the other hand, the suction channel to which the suction nozzle and/or the yarn storage nozzle is connected is also connected to the rotor spinning device, the cleaning air flow of the suction channel can be increased by opening the shut-off element of the suction nozzle and/or the shut-off element of the yarn storage nozzle.

Advantageously, a cleaning air flow is generated which is increased compared to the working air flow accordingly. In this connection, "increasing" means generating a larger volume flow for the cleaning gas flow than in conventional operation. An increased cleaning air flow compared to the working air flow can be generated, for example, as follows: in addition to the shut-off element of the rotor spinning device, the shut-off element of the suction nozzle and/or the shut-off element of the yarn storage nozzle are also opened.

An increased cleaning airflow compared to the working airflow can also be generated as follows: in addition to the shut-off element of the rotor spinning device, the cover element of the rotor spinning device is also opened. The rotor spinning device usually has a combined rotor and combing roller housing, which is closed by a cover element 27.

Furthermore, it is advantageous if the shut-off element and/or the cover element is opened after the textile machine has been started and before normal operation of the textile machine has begun. This does not interfere with the normal spinning operation or the normal operation of the textile machine.

Furthermore, it is advantageous for the textile machine that the negative pressure source is arranged at a second end of the textile machine.

In the case of the method, it is advantageous to start the fan of the negative pressure source and, after the start, to open the shut-off elements and/or the cover elements in the several operating positions, preferably to open these elements suddenly. This produces a cleaning air flow in a pulsed manner, so that the cleaning air flow carries impurities away more easily.

According to a further advantageous development of the method, the blocking element and/or the cover element are opened and closed repeatedly in a periodic manner, so that the cleaning air flow in the suction channel is vibrated. Wherein the optimum frequency of opening and closing is related to the length of the textile machine and thus also to the length of the suction channel. This helps to separate the dirt.

In the case of the method, it is advantageous if at least one dirt conveyor belt suction device is also switched on in order to generate the cleaning air flow. This also enables a further increase in the suction cross section and thus a high throughput of cleaning air flow. Accordingly, it is advantageous for the textile machine to have at least one dirt conveyor belt suction device. Preferably, the at least one dirt conveyor belt suction device is arranged at a first end of the textile machine, which first end faces away from the negative pressure source.

Drawings

Further advantages of the invention are described in the following description of the embodiments. Wherein:

figure 1 is a schematic front view of a textile machine comprising a suction device according to a first embodiment,

figure 2 is a schematic side view partly in section of a working position of the textile machine in a first state,

figure 3 is a schematic view of the operating position according to figure 2 in a second state,

figure 4 is a schematic front view of a textile machine comprising a suction device according to a second embodiment,

figure 5 is a side view in partial section of a working position of a textile machine according to another embodiment,

FIG. 6 is a side view, partly in section, of a working position of a textile machine according to another alternative embodiment, an

Fig. 7 is a schematic front view of a textile machine comprising a suction device according to a third embodiment.

Detailed Description

In the following description of the embodiments, identical features or features which are at least similar in terms of technical solution and/or operating principle are denoted by the same reference numerals. Furthermore, these features are explained in detail only when they are mentioned for the first time, while in the following exemplary embodiments only the differences from the exemplary embodiments already described are explained. Furthermore, for the sake of clarity, only one or a few of a plurality of identical components or features are generally labeled.

Fig. 1 is a schematic front view of a textile machine 1 comprising a suction device according to a first embodiment. The textile machine 1 comprises a large number of work stations 2 arranged side by side, which in this case are arranged between two frames 18 mounted on the

ends

9, 17 of the textile machine 1.

The textile machine 1 is designed as a spinning machine. Each of the work stations 2 has a feed device 19 for feeding the fibrous material to be spun, a spinning device 10 for spinning the fibrous material, and a take-off device 20 for taking off a spun thread 23. The yarn 23 is fed by the take-off device 20 to the winding device 21, where it is wound on the reel 22.

The spinning machine can be designed, for example, as a rotor spinning machine and in this case has a combing roller serving as a feed device 19 and a rotor spinning device 11 serving as a spinning device (see fig. 2 and 3). As an alternative, the spinning machine or textile machine 1 can also be designed as an air jet spinning machine, the working position 2 of which has a drawing device serving as a feeding device 19 and a spinneret serving as a spinning device 10. The textile machine 1 can however also be designed as a winding machine. In this case, instead of the feeding device 19 and the spinning device 10, a pay-off reel (Ablaufspule) is provided. The respective types of construction of the textile machine 1 are substantially identical in the course of the yarn after the take-off device 20.

In the present example, a spinning device 10 is shown as the working member 7 which consumes the negative pressure. However, the work station 2 may also have other work components, including also the work component 7 which consumes the negative pressure. Furthermore, several maintenance components can be provided on each of the work stations 2, including also the maintenance component 8 which consumes the underpressure (see fig. 2 and 3). Both the working member 7 consuming the negative pressure and, if provided, the service member 8 are connected to the suction channel 3 and the negative pressure is applied to these members through this suction channel. In the present example, the spinning device 10 is connected to the suction channel 3 by a connecting channel 26. The spinning device 10 can be disconnected from the suction channel 3 by means of the shut-off element 6 or can be connected to this suction channel. The suction channel 3 is in turn connected to a negative pressure source 4, which is arranged here at a second end 17 of the textile machine 1 in one of the machine frames 18. During operation of the textile machine 1, a working air flow (not shown) is caused to flow through the suction channel 3, said working air flow supplying the spinning device 10 with a negative pressure.

For controlling the various movements on the textile machine 1, the textile machine 1 also has at least one control unit 16.

The fibers and yarn sections accumulated during operation of the textile machine 1 are sucked through the suction channel 3 and conveyed to a disposal device. In which the adhesion of fibres or fibre accumulations, the flying of the channel and the hanging of the yarn sections in the suction channel 3 occur again and again, so that the suction channel needs to be cleaned from time to time. For this purpose, a cleaning air flow 5 is generated in the suction channel 3. For this purpose, in the prior art, a dedicated passage and a dedicated shut-off cover or slide for this passage are required for the suction channel 3, and it is now provided that the cleaning air flow 5 is generated by: the shut-off element 6 is briefly opened on the component that must be located in the working position 2.

In this example, two shut-off elements 6 of the spinning device 10 located at a first end 9 of the textile machine 1 are opened in order to generate the clean air flow 5. These spinning devices 10 are therefore located at a first end 9 of the textile machine opposite the negative pressure source 4, so that the cleaning air flow 5 passes through the entire suction channel 3. Of course, the number and position of the open working positions 2 of the shut-off element 6 can be varied. In this case, the shut-off element 6 of the working position 2 close to the negative pressure source 4 can also be opened, for example, in order to clean the region of the suction channel 3 close to the negative pressure source 4 and the connecting channel 26 of these working positions 2. Likewise, the number and position of the open working positions 2 of the shut-off element can be varied in order to adjust the volume flow and to gradually clean sections of the suction channel 3 and/or the connecting channels 26.

Fig. 2 is a schematic partial section through a working position 2 of a textile machine 1 designed as a rotor spinning machine. The feed device 19 is designed here as an opening roller (not shown), which is arranged here in a combined rotor and opening roller housing 25, which is closed by means of a cover element 27. The spinning device 10 is also constructed as a rotor spinning device 11. Furthermore, a suction nozzle 12 and a yarn storage nozzle 13 are provided on the working station 2, which nozzle serves as a maintenance means 8 for consuming the negative pressure, which maintenance means are required for the threading of the yarn 23 after an interruption in the spinning process. Furthermore, a work station control system 24 is provided, which is designed to control the operation on the work station 2 and is connected to the control unit 16.

Wherein in the example shown, the rotor spinning device 11, which acts as the working member 7 consuming the negative pressure, and the maintenance member 8 consuming the negative pressure are both connected to a single suction channel 3. The rotor spinning device 11, the suction nozzle 12 and the yarn storage nozzle 13 can be disconnected from the suction channel 3 by means of a separate shut-off element 6. The working position shown here is in a state in which all the shut-off elements 6 are closed. This corresponds, for example, to the state after the start of the textile machine 1 and before production begins.

In order to generate the cleaning air flow and, as the case may be, also to adjust the size of the cleaning air flow, different variants of the method can be used. Accordingly, it is possible, for example, as described in connection with fig. 1, to open only a part of the shut-off elements 6 of the rotor spinning device 11. This is preferably done after the textile machine 1 is started up and before production starts.

In connection with the operating position 2 in fig. 3, a further exemplary embodiment of the method is described, in which, in addition to the shut-off element 6 of the rotor spinning device 11, the cover element 27 of the rotor and the combing roller housing 25 is opened in order to generate the cleaning air flow 5 (see fig. 1). Thereby, a relatively large suction cross section can be released merely by opening the existing components of the textile machine 1 and an increased cleaning air flow 5 is generated compared to the working air flow. This makes it possible to remove the fibre and yarn accumulations very reliably.

Fig. 4 shows a further embodiment of the textile machine 1, in which, in addition to the spinning device 10, a maintenance component 8 consuming a negative pressure, namely a suction nozzle 12 in each case, and a yarn storage nozzle 13, are connected to the suction channel 3 in each of the working positions 2. In other respects, the structure of the textile machine 1 corresponds to that shown in fig. 1.

Fig. 5 is a schematic side view, partly in section, of a working position 2 of a textile machine 1, which is likewise designed as a rotor spinning machine. In the same way as in the operating position shown in fig. 2, the rotor spinning device 11, the suction nozzle 12 and the yarn storage nozzle 13 are each connected to the suction channel 3 by means of a respective shut-off element 6. In order to generate the cleaning air flow 5 (see fig. 1 and 4), in the present example, not only the shut-off element 6 of the rotor spinning device 11, but also the shut-off element of the suction nozzle 12 and, as the case may be, the shut-off element of the yarn storage nozzle 13 are opened.

Fig. 6 is a schematic partially sectional side view of a working position 2 of a textile machine 1 according to another embodiment. The difference from the previous example is that the suction nozzle 12 and the yarn storage nozzle 13 are connected here to the own suction channel 3. In this way, the suction channel 3 shown in the upper part of the figure can be cleaned by opening the shut-off element 6 of the suction nozzle 12 and/or the shut-off element 6 of the yarn storage nozzle 13. Such an embodiment is therefore advantageous even in the case where the textile machine 1 is constructed as a winding machine and the suction channel 3 for the spinning device 10 is not required.

In the present example, however, the spinning device 10 is connected to its own suction channel 3 as described above, so that it can be cleaned separately and independently of the suction channel 3 of the maintenance member 8 which consumes the negative pressure. For this purpose, the shut-off element 6 of the spinning device 10 is opened as described above. If the spinning device 10 is designed as a rotor spinning device 11, the rotor and/or a cover element 27 (not shown here) of the combing roller housing 25 can also be additionally opened here in order to generate a greater volume flow.

Fig. 7 shows a further embodiment of the textile machine 1 or a further variant of the method. In the present example, the textile machine 1 likewise has two suction channels 3, wherein the spinning device 10 is connected to a first suction channel 3 and the maintenance member 8 consuming the negative pressure is connected to the other suction channel 3. But it is also possible to provide only a single suction channel 3. On the textile machine 1, a dirt conveyor belt 14 is also shown, which conveys away dirt originating from the fibre material and, as the case may be, excess fibre that has accumulated on the working position 2. In order to remove and dispose of the dirt transported on the dirt transport belt 14, a dirt transport belt suction device 15 is provided at each

end

9, 17 of the textile machine 1. In contrast to the illustration, it is also possible to provide only a single dirt transport belt suction device 15, which in this case is preferably arranged at a first end 9 of the textile machine 1, which is opposite a second end 17 containing the negative pressure source 4.

In order to increase the cleaning air flow 5 in such a textile machine 1, the following is used: in addition to the blocking element 6 of the respectively selected working position 2, at least one dirt conveyor belt suction device 15, which is preferably arranged at the first end 9, is opened.

The invention is not limited to the embodiments shown and described. Variations may be employed which are within the scope of the claims, and features may be combined, even if the features are disclosed and described in different embodiments.

List of reference numerals

1 textile machine

2 working position

3 suction channel

4 negative pressure source

5 clean air flow

6 cut-off element

7 working member consuming negative pressure

8 maintenance component consuming negative pressure

9 first end

10 spinning device

11-rotor spinning device

12 suction nozzle

13 yarn storage nozzle

14 dirt conveyer belt

15 dirt conveyer belt suction device

16 control unit

17 second end

18 frame

19 feeding device

20 leading-out device

21 winding device

22 reel

23 yarn

24 work station control system

25 rotor and combing roller shell

26 connecting channel

27 cover element

Claims

1. Method for operating a textile machine (1), in particular a spinning machine or a winding machine, having a plurality of working places (2) of the same type arranged side by side and having at least one suction channel (3) extending along the working places (2), which suction channel (3) is connected to a source of underpressure (4) and to which a working air flow is applied during normal operation of the textile machine (1), wherein in the method a cleaning air flow (5) is applied briefly to the suction channel (3), characterized in that, on at least a number of working places (2) of the plurality of working places (2), a shut-off element (6) is opened, each for disconnecting a working member (7) of the respective working place (2) which consumes underpressure and/or a maintenance member (8) which consumes underpressure from the suction channel (3), whereby the cleaning air flow (5) is generated, and/or, in order to generate an increased cleaning air flow (5), the cover element (27) of the rotor and/or the combing roller housing (25) is opened at the plurality of working positions (2).

2. Method according to the preceding claim, characterized in that the number of working positions (2) at which the shut-off element (6) and/or the cover element (27) are opened is located on a first end (9) of the textile machine (1) facing away from the negative pressure source (4).

3. Method according to any one of the preceding claims, characterized in that the textile machine (1) is designed as a rotor spinning machine, wherein each working position (2) has a rotor spinning device (11) and that the shut-off element (6) and/or the cover element (27) of the rotor spinning device (11) is opened on the several working positions (2).

4. Method according to any of the preceding claims, characterized in that an increased cleaning air flow (5) compared to the working air flow is generated.

5. Method according to any one of the preceding claims, characterized in that each of the working positions (2) has a suction nozzle (12) and/or a yarn storage nozzle (13) and/or in that the shut-off element (6) of the suction nozzle (12) and/or the shut-off element (6) of the yarn storage nozzle (13) is opened on the number of working positions (2).

6. Method as in any claim hereinbefore, characterized in that the shut-off element (6) and/or the cover element (27) are opened after the textile machine (1) is started and before regular work of the textile machine (1) is started.

7. Method according to any one of the preceding claims, characterized in that the ventilator of the negative pressure source (4) is started and that the shut-off element (6) and/or the cover element (27) is suddenly opened after the start.

8. Method according to any one of the preceding claims, characterized in that the shut-off element (6) and/or the cover element (27) are opened and closed repeatedly periodically, so that the cleaning air flow (5) in the suction channel (3) is vibrated.

9. Method according to any of the preceding claims, characterized in that for generating the cleaning air flow (5) also at least one dirt conveyor belt suction device (15) is switched on.

10. Textile machine (1), in particular a spinning machine or a winding machine, having a large number of working locations (2) of the same type arranged side by side and having at least one suction channel (3) extending along the working locations (2), which is connected to a source of underpressure (4) and to which a working air flow is applied during normal operation of the textile machine (1), and having a control unit (16), characterized in that the control unit (16) is designed for carrying out the method as claimed in any one of the preceding claims.

11. The textile machine (1) according to the preceding claim, characterized in that the textile machine (1) is designed as a rotor spinning machine, wherein each work station (2) has a rotor spinning device (11) connected to the suction channel (3), the rotor spinning device (11) being disconnectable from the suction channel (3) by means of a shut-off element (6).

12. The textile machine (1) according to one of the preceding claims, characterized in that each of the working positions (2) has a suction nozzle (12) and/or a yarn storage nozzle (13), which can be disconnected from the suction channel (3) by means of a shut-off element (6).

13. Textile machine (1) according to any one of the preceding claims, characterized in that the negative pressure source (4) is arranged on a second end (17) of the textile machine (1).

14. Textile machine (1) according to one of the preceding claims, characterized in that the textile machine (1) has at least one dirt conveyor belt suction device (15), which is preferably arranged on the first end (9) of the textile machine (1).