CN108342797B

CN108342797B - Method for maintaining spinning station of spinning machine and spinning machine

Info

Publication number: CN108342797B
Application number: CN201711128754.5A
Authority: CN
Inventors: B·巴尔曼; R·波赫; M·马莱克; F·拜尔; 斯蒂芬·维德纳·伯恩博格; T·格鲁伯; 罗宾·维茵; 克里斯汀·凯特纳
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG
Priority date: 2017-01-24
Filing date: 2017-11-15
Publication date: 2022-08-23
Anticipated expiration: 2037-11-15
Also published as: US20180209077A1; CN108342797A; CN115323543A; DE102017101317A1; EP3351663A1; EP3351663B1; CN115323543B

Abstract

The invention relates to a method for servicing a spinning station (2) of a spinning machine (1), wherein the spinning machine (1) has a plurality of spinning stations (2) arranged next to one another and at least one servicing device (3) which can be moved along the spinning stations (2) and by means of which the spinning stations (2) are serviced, wherein a housing (8) of the spinning stations (2) is opened before servicing the spinning stations (2), the spinning stations (2) are serviced by the servicing device (3) and the housing (8) is closed again after servicing the spinning stations (2). According to the invention, the housing (8) of the spinning station (2) is opened for servicing by itself before servicing and/or closed by itself after servicing by means of a closure (9) arranged at the spinning station (2).

Description

Method for maintaining spinning station of spinning machine and spinning machine

Technical Field

The invention relates to a method for maintaining a spinning station of a spinning machine, comprising a plurality of spinning stations arranged next to one another and at least one maintenance device which can be moved along the spinning station and by means of which the spinning station is maintained. In this case, the housing of the spinning station is opened before the maintenance of the spinning station, the spinning station is maintained by the maintenance device and the housing is closed again after the maintenance of the spinning station. The invention also relates to a corresponding spinning machine for carrying out the method.

Background

A method and a device for operating an open-end rotor spinning machine (offnend-rotorspinmashine) are known from DE102007048720a 1. The spinning machine has a plurality of similar operating stations, each of which is equipped with a spinning device for producing the yarn and a winding device for creating a cross-wound bobbin (Kreuzyarn) and is designed in such a way that the yarn end, which is withdrawn from the cross-wound bobbin after the spinning interruption, is ready for the joining process and is placed in the joining position, can be automatically joined again by the spinning device (spinning). The time-critical steps of the process are carried out in such a way that the prepared yarn end is guided back into the spinning rotor in a defined manner, the yarn feed is precisely started, and the yarn withdrawal from the open-end spinning device is precisely started by means of a device specific to the working area. The necessary maintenance work, such as, for example, rotor cleaning, before the actual start-up of the subsequent process is carried out here by a service unit which autonomously operates the working location. The maintenance unit is arranged to travel along the open-end rotor spinning machine.

A disadvantage of such a method is that the spinning device must be opened manually or by a maintenance unit before the auxiliary work can be carried out by the service unit which can be moved. However, this is time-consuming, which leads to a loss of power for the spinning machine.

Disclosure of Invention

The aim of the invention is therefore to reduce the time required for maintaining the spinning stations (Spinnstelle) in order to increase the efficiency of the spinning machine.

This object is achieved by a method for operating a spinning machine having the features of the independent claim.

A method for maintaining a spinning station of a spinning machine is proposed. The spinning machine has a plurality of spinning stations arranged next to one another and at least one maintenance device. Yarns are spun from the fibrous material by means of a spinning station. Furthermore, the servicing device can travel along the spinning station in order to service the spinning station. The servicing of the spinning station comprises in particular cleaning of the spinning rotor. In this case, the housing of the spinning station is opened before the maintenance of the spinning station, the spinning station is maintained by the maintenance device and the housing is closed again after the maintenance of the spinning station. Furthermore, a spinning machine for carrying out the method is proposed, which has a plurality of spinning stations arranged next to one another and at least one maintenance device, which can be moved along the spinning stations and by means of which the spinning stations can be maintained. Each spinning station has a housing which is closed during the spinning process and which can be opened for servicing of the spinning station.

According to the invention, the housing of the spinning station to be serviced is opened for servicing by means of a closure element arranged at the spinning station. In addition or alternatively, the housing of the spinning station is closed autonomously after servicing by the closure. The spinning position therefore no longer has to be opened and/or closed by the service person or the service device itself. The time required for the servicing device for servicing is thereby reduced, so that the servicing device can service more spinning stations on the other hand. The servicing device does not have to wait until the service person opens the spinning station to be serviced. Thereby improving productivity of the spinning machine.

At the spinning station, a closure is respectively arranged for autonomously opening the housing before servicing by the servicing device and/or for autonomously closing the housing after servicing by the servicing device. The closure is accordingly designed to open and/or close the housing.

It is advantageous here if the servicing comprises cleaning the spinning element, in particular the spinning rotor and/or the yarn withdrawal nozzle. The cleaning of the spinning element is carried out here by means of a cleaning device arranged in the service device which can be moved along, wherein the spinning device or the housing of the spinning station is already opened by the spinning station itself before, but in an advantageous manner. However, the servicing may also comprise other steps in which it is necessary to open the housing. The spinning machine can be designed as a rotor spinning machine (rotorspinmashine), but the invention can also be used in air-flow spinning machines (luffspinmashine).

It is also advantageous if the housing of the spinning station to be serviced is opened before the service device reaches or is positioned in front of the spinning station. The servicing device can therefore be started directly after its positioning at the relevant spinning station, so that the time for which the servicing device remains at the spinning station is also shortened again. The servicing device can thereby service more spinning stations in the same time.

It is also advantageous if the spinning machine and/or the spinning station has a control unit which recognizes the approach of the servicing device to the spinning station to be serviced and actuates the closing element in such a way that the housing is open when the servicing device reaches the spinning station. In the method for servicing a spinning station, the approach of the servicing device to the spinning station to be serviced is preferably recognized by means of a controller of the spinning machine and the opening of the housing of the spinning station to be serviced is brought about in such a way that the housing is opened when the servicing device has reached the spinning station.

The proximity of the servicing device can be defined, for example, as a certain distance of the servicing device from the spinning station, which is detected by means of a certain measuring element. The controller can, for example, continuously measure the position and the speed of the servicing device at the spinning machine, at which the servicing device travels in the direction of the spinning station to be serviced. The controller may calculate therefrom an estimated travel time of the servicing device until reaching the spinning station to be serviced and cause opening of the housing of the spinning station before the servicing device reaches the spinning station. The spinning position can wait for the service device with the housing open. The controller must be configured in a suitable manner for this purpose.

Furthermore, a time value can be stored in the control unit, which time value indicates how long the spinning station is opened. It is therefore possible to calculate the position of the approaching service device, which when reached causes the housing to open. The opening is thus just finished when the servicing device reaches the spinning station. This results in production being carried out at the spinning station to be maintained for as long as possible while production is still being carried out at said spinning station and the time during which the spinning station is out of service is reduced.

It is also advantageous if a peripheral region of the spinning station to be serviced is defined and it is detected by means of a control unit of the spinning machine whether the servicing device is located in the peripheral region of the spinning station. Opening of the housing is only caused if the or, in the case of a plurality of service devices, one of the service devices is in the surrounding area and therefore a short travel of the service device is foreseen. This prevents unnecessary or premature opening of the housing.

In order to carry out a preventive maintenance of the spinning station, in particular a preventive rotor cleaning, it is furthermore advantageous if the spinning station is stopped and the housing of the spinning station is opened as soon as the maintenance device or one of the maintenance devices is detected in the surrounding area of the spinning station. For this purpose, the controller of the spinning machine must also be configured in a suitable manner. In this case, the time of the last servicing can also be taken into account and, only if this time has elapsed for a relatively long time, the opening of the spinning station and the subsequent servicing operation, in particular the preventive cleaning of the spinning rotor, are initiated during the travel of the servicing device.

It is also advantageous to check whether the servicing device is located in the peripheral region when the production of the spinning station is interrupted, for example by a yarn break. The check can also be carried out by means of a controller of the spinning machine. When a maintenance device is located in the region of the spinning stations, the maintenance device is moved to the relevant spinning station for maintenance, maintenance is carried out and then production is resumed again, in particular the yarn is connected again. This embodiment is therefore advantageous in particular for spinning machines which have a service-specific connecting device. If the servicing device can be used in the vicinity after a production interruption, i.e. if the travel path is short, the spinning rotor can be cleaned, in particular in the case of a rotor spinning machine, before production is resumed again, with only a small amount of time. If, on the other hand, there is no service device in the vicinity, production is resumed immediately and without service in order to keep the downtime of the spinning station as short as possible.

Advantageously, the housing of the spinning station is automatically closed by the closure of the spinning station after the maintenance of the spinning station. In this case, the closing can take place independently of the position of the maintenance device, i.e. already at a time before the maintenance device is still positioned at the spinning station, for example.

However, it is particularly advantageous if after the maintenance of the spinning station the maintenance device resumes its further travel and only then does the housing of the spinning station automatically close by the closure of the spinning station and resume production again at the spinning station. The servicing device can thus already be driven to the next spinning position and wait, which further increases the productivity of the spinning machine.

In an alternative embodiment, however, it is also possible for the servicing device to also undertake a rapid sequence of closing the spinning position before it resumes its further travel.

In this case, in an advantageous development of the invention, the yarn is again applied by a spinning-station-specific application device by autonomously closing the housing. The spinning machine can thus be serviced more quickly overall, so that the efficiency of the spinning machine is increased.

It is also advantageous if the closure element comprises an actuator, in particular an electromagnetic switch, a pneumatic and/or hydraulic piston and/or an electric motor, which opens and/or closes the housing.

Drawings

Other advantages of the present invention are described in the following examples. Wherein:

FIG. 1 shows a schematic representation of a spinning machine with a plurality of spinning stations and a maintenance device which can be moved, an

Fig. 2 shows a schematic side view of a spinning station with a closure element.

Detailed Description

Fig. 1 shows a schematic representation of a spinning machine 1 with a plurality of spinning stations 2 (of which only one spinning station 2 is provided with reference numerals for the sake of simplicity) and an operable maintenance device 3. The service device 3 is arranged on the rail 4 in such a way that it can travel in the direction of travel 6. Preferably, as shown in the present case, the rail 4 extends around the spinning station 2, so that the servicing device 3 can reach from one side of the spinning machine 1 to the other side of the spinning machine 1.

In the case of the spinning machines 1 that are conventional at present, the cover 5 of the housing 8 of the spinning station 2 (shown here schematically at the spinning station 2) is opened for servicing by a service person or by the service device 3. The cover 5 of the housing 8 of the spinning station 2 can be pivoted in the pivoting direction 7, so that the housing 8 of the spinning station 2 can be opened and/or closed. Opening the cover 5 by a service person is very time-consuming in this case. Opening the cover 5 by the servicing device 3 is also quite time consuming, so that the productivity of the spinning machine 1 is reduced. In the case of a rotor spinning machine, the cover 5 is arranged here on a housing 8 of a spinning rotor 10 (see fig. 2), which is open.

In the method according to the invention, the housing 8 of the spinning station 2 of the spinning machine 1 is opened for maintenance purposes in an autonomous manner. Additionally or alternatively, the housing 8 of the spinning station 2 is also closed again automatically after maintenance. The opening and/or closing is performed here by a closure 9, which is shown in fig. 2.

Fig. 2 shows a schematic side view of the spinning station 2 with a closure 9 for opening and/or closing the housing 8 of the spinning station 2. The spinning station 2 is embodied as a spinning station 2 of a rotor spinning machine and has a spinning rotor 10 as a spinning element, which is mounted rotatably in a housing 8. The yarn F produced by the spinning rotor 10 is drawn off here by a yarn draw-off nozzle 11 and fed to a winding device not shown here. The cover 5 for closing the housing 8 can also be seen. The opening and closing of the housing 8 is effected by means of a closure member 9 which in the present case comprises a spindle with a drive motor and which swings the cover away from the housing 8 or pulls the cover towards the housing 8. After the housing 8 has been opened by means of the closure element 9, the servicing device 3 can service the spinning station, in particular clean the spinning rotor 10 of the spinning station 2.

When the service device 3 no longer has to open the spinning station 2 by itself, the service device 3 can end the service work at another spinning station 2 or use this time for the travel path to the next spinning station 2 to be serviced. As a result, more spinning stations 2 can be serviced overall, so that the productivity of the spinning machine 1 is increased.

The cover 5 of the spinning station 2 can advantageously already be opened when the servicing device 3 is foreseen to travel past the spinning station 2. For example, the spinning machine 1 comprises a control device, not shown here, in which the spinning stations 2 are stored for a longer time without further maintenance. The control furthermore recognizes that the servicing device 3 is moving in the direction of the spinning position 2. A preventive maintenance of the spinning station 2 can now be initiated, wherein the spinning station 2 is stopped, the housing 8 of the spinning station 2 is opened and the spinning station 2 waits for the maintenance device 3 with the housing 8 already opened. The servicing device 3 can then service the spinning station 2 and then proceed directly to the next spinning station 2 to be serviced.

Preferably the maintenance action of the maintenance device 3 comprises cleaning the spinning rotor. The spinning station 2 is first shut down and the yarn is clamped in order to be able to be connected again after the rotor has been cleaned. After the rotor cleaning, the spinning station 2 is closed again autonomously and the yarn F is again connected autonomously. It is therefore particularly advantageous if the spinning station 2 has a suitable attachment device. In principle, however, it is also possible for the servicing device 3 to carry out other actions, such as, for example, changing the spinning rotor or applying a thread.

The opening of the cover 5 can be brought about in such a way that the opening of the cover 5 of the housing 8 is just finished when the holding device 3 reaches the spinning station 2. The spinning station 2 can thus still be manufactured for as long as possible. The service device 3 can then immediately begin servicing.

If, on the other hand, a yarn break occurs at the spinning position 2, the control unit can still bring the service device 3 to the spinning position 2 before the spinning position 2 autonomously picks up the yarn again. In this case, it is advantageous to define in advance the surrounding area of the spinning position 2, for example in the interval of up to five spinning positions 2. Of course, the surrounding area can also be defined for the maximum permissible time period of the travel path of the service device 3 to the spinning station 2. In the event of a yarn break, it is first checked by means of the control unit of the spinning machine 1 whether the servicing device 3 is located in the area around the spinning station 2. If this is the case, the spinning station 2 is already opened autonomously, so that the servicing device 3 can perform servicing work, in particular rotor cleaning, directly after reaching the spinning station 2. If, on the other hand, there is no servicing device 3 in the area around the spinning station 2, the spinning station is again engaged with the yarn F by means of its dedicated engagement device, without rotor cleaning having been carried out before, since otherwise the spinning station would be shut down unproductively for too long.

The invention is not limited to the embodiments shown and described. Even if the invention is described in terms of a rotor spinning machine, the spinning machine can be embodied in particular as a rotor spinning machine. Variants within the scope of the claims are equally possible with combinations of features, even if these features are shown and described in different embodiments.

List of reference numerals

1 spinning machine

2 spinning station

3 maintenance device

4 track

5 cover cap

6 direction of travel

7 direction of oscillation

8 casing

9 closure element

10 spinning rotor

11 drawnwork nozzle

F yarn

Claims

1. A method for servicing spinning stations (2) of a spinning machine (1), wherein the spinning machine (1) has a plurality of spinning stations (2) arranged next to one another and at least one servicing device (3), the maintenance device travels along the spinning station (2) and maintains the spinning station (2) by means of the maintenance device, wherein a housing (8) of the spinning station (2) is opened before the spinning station (2) is maintained, servicing the spinning station (2) by the servicing device (3) and closing the housing (8) again after servicing the spinning station (2), characterized in that a housing (8) of the spinning station (2) is opened autonomously before the service and/or closed autonomously after the service for the service by means of a closure (9) arranged at the spinning station (2);

wherein the approach of the maintenance device (3) to the spinning station (2) to be maintained, which means that the distance of the maintenance device (3) from the spinning station (2) to be maintained is detected by a measuring element, is recognized by means of a controller of the spinning machine (1), which calculates the travel time of the maintenance device (3) until the spinning station (2) to be maintained is reached and causes the opening of the housing (8) of the spinning station (2) to be maintained, so that the housing (8) is open when the maintenance device (3) has reached the spinning station (2).

2. The method of claim 1, wherein the servicing comprises cleaning the spinning member.

3. Method according to claim 2, characterized in that the spinning member is a spinning rotor (10) and/or a yarn drawing nozzle (11).

4. Method according to claim 1, characterized in that the surrounding area of the spinning station (2) to be serviced is defined and it is detected by means of the controller of the spinning machine (1) whether the servicing device (3) is located in the surrounding area of the spinning station (2).

5. A method according to claim 4, characterized in that, in order to perform preventive maintenance of the spinning station (2), the spinning station (2) is stopped and the housing (8) of the spinning station (2) is caused to open as soon as the maintenance device (3) is detected in the surrounding area of the spinning station (2).

6. Method according to claim 4, characterized in that it is checked if the service device (3) is located in the surrounding area when production of the spinning station (2) is interrupted, and that the service device is brought to the spinning station (2) for the service when a service device (3) is located in the surrounding area, the service is performed and production is then resumed again.

7. Method according to claim 6, characterized in that it is checked if the service device (3) is located in the surrounding area when the yarn breaks.

8. Method according to claim 6, characterized in that said renewed production is a renewed yarn-joining.

9. Method according to claim 6, characterized in that after the spinning station (2) is maintained the maintenance device (3) resumes its further travel and the housing (8) of the spinning station (2) is closed thereafter.

10. A method according to claim 6, characterized in that after the spinning station (2) is serviced the service device (3) closes the housing (8) of the spinning station (2) and only thereafter resumes its continued travel.

11. Method according to claim 8, characterized in that the re-joining of the yarn is performed by a joining device of a spinning station.

12. Method according to any of the preceding claims, characterized in that the closure (9) of the spinning station (2) comprises an actuator which opens and/or closes the housing (8) of the spinning station (2) to be serviced.

13. The method of claim 12, wherein the actuator is an electromagnetic switch, a pneumatic piston, a hydraulic piston, or an electric motor.

14. Spinning machine (1) for carrying out the method according to any one of the preceding claims, wherein the spinning machine (1) has a plurality of spinning stations (2) arranged side by side and at least one maintenance device (3), the maintenance device travels along the spinning station (2) and maintains the spinning station (2) by means of the maintenance device, wherein each spinning station has a housing (8) which is closed during the spinning process and which can be opened for servicing of the spinning station (2), characterized in that a closure (9) is arranged at the spinning station (2) for autonomously opening the housing (8) before servicing by the servicing device (3) and/or for autonomously closing the housing (8) after servicing by the servicing device (3);

wherein the spinning machine (1) has a control unit which recognizes that the maintenance device (3) is close to the spinning station (2) to be maintained, wherein close to the spinning station to be maintained means that the distance of the maintenance device (3) from the spinning station (2) to be maintained is detected by a measuring element, calculates the travel time of the maintenance device (3) until the spinning station (2) to be maintained is reached, and actuates the closing element (9) in such a way that the housing (8) is open when the maintenance device (3) reaches the spinning station (2).

15. Spinning machine according to claim 14, characterized in that the spinning station (2) has a take-up device.

16. Spinning machine according to claim 14 or 15, characterised in that the closure element (9) of the spinning station (2) comprises an actuator.

17. Spinning machine according to claim 16, characterized in that the actuator is an electromagnetic switch, a pneumatic piston, a hydraulic piston or an electric motor.