阅读说明：本技术 借助清洁头清洁纺纱转杯的转杯盘的清洁装置 (Cleaning device for cleaning a rotor plate of a spinning rotor by means of a cleaning head ) 是由 H·威德纳 塞巴斯蒂安·弗里茨 于 2019-07-15 设计创作，主要内容包括：一种用于清洁纺纱转杯(3)的转杯盘(2)的清洁装置(1),其包括：容置部(6)；支承于容置部(6)上的清洁头(4),该清洁头(4)能向纺纱转杯(3)推进以进行清洁并且具有至少一个清洁元件(5、5a、5b)；以及用于在推进的清洁头(4)中制动和/或保持纺纱转杯(3)的制动装置(11),清洁头(4)具有用于纺纱转杯(3)的容置区域(7),该容置区域(7)至少部分地构造为圆柱形并且限定清洁头(4)的轴向方向(AR)和径向方向(RR)。制动装置(11)包含多个、特别是两个制动元件(12),多个制动元件(12)以能从息止位置移动到制动位置的方式支承于清洁头(4)上,并且多个制动元件(12)中的每个制动元件能借助自己的驱动器(13)来移动。(A cleaning device (1) for cleaning a rotor disc (2) of a spinning rotor (3), comprising: a receptacle (6); a cleaning head (4) supported on the receptacle (6), the cleaning head (4) being able to be pushed towards the spinning rotor (3) for cleaning and having at least one cleaning element (5, 5a, 5 b); and a braking device (11) for braking and/or holding the spinning rotor (3) in the advancing cleaning head (4), wherein the cleaning head (4) has a receiving region (7) for the spinning rotor (3), the receiving region (7) is at least partially cylindrical and defines an axial direction (AR) and a radial direction (RR) of the cleaning head (4). The braking device (11) comprises a plurality of, in particular two, braking elements (12), the plurality of braking elements (12) being mounted on the cleaning head (4) so as to be movable from a rest position into a braking position, and each braking element of the plurality of braking elements (12) being movable by means of a separate drive (13).)

1. A cleaning device (1) for cleaning a rotor disc (2) of a spinning rotor (3), comprising:

a receptacle (6);

a cleaning head (4) supported on the receptacle (6), the cleaning head (4) being able to be pushed towards the spinning rotor (3) for cleaning and having at least one cleaning element (5, 5a, 5 b); and

a braking device (11) for braking and/or holding the spinning rotor (3) in an advancing cleaning head (4), wherein the cleaning head (4) has a receiving region (7) for the spinning rotor (3), the receiving region (7) is at least partially cylindrical and defines an axial direction (AR) and a radial direction (RR) of the cleaning head (4),

it is characterized in that the preparation method is characterized in that,

the braking device (11) comprises a plurality of braking elements (12), wherein the plurality of braking elements (12) are supported on the cleaning head (4) in a manner that the braking elements can move from a rest position to a braking position, and each braking element (12) can be moved by means of an own drive (13).

2. Cleaning device (1) according to claim 1, characterized in that the braking device (11) comprises two braking elements (12).

3. Cleaning device (1) according to claim 1, characterized in that the drives (13) of the plurality of braking elements (12) are jointly actuatable.

4. Cleaning device (1) according to claim 1, characterized in that the drive (13) is configured as a pneumatic cylinder (10).

5. Cleaning device (1) according to claim 4, characterized in that the pneumatic cylinders (10) are connected to a common compressed air source (18) and/or a common control valve (17).

6. Cleaning device (1) according to claim 1, characterized in that the braking elements (12) are movably arranged on the cleaning device (1) such that the braking elements (12) can be advanced to the periphery of the spinning rotor (3) by means of their respective drives (13).

7. Cleaning device (1) according to claim 6, characterized in that the braking element (12) is arranged on the cleaning device (1) in a manner movable in the radial direction (RR) of the cleaning head (4).

8. Cleaning device (1) according to claim 6, characterized in that the braking element (12) is configured as a brake lever (12a) and is rotatably supported on the cleaning head (4).

9. Cleaning device (1) according to claim 1, characterized in that the cleaning head (4) is supported on the receptacle (6) in a resiliently flexible manner at least in the radial direction (RR).

10. Cleaning device (1) according to claim 9, characterized in that the cleaning head (4) is supported on the receptacle (6) by means of one or more elastic support elements (14).

11. Cleaning device (1) according to claim 10, characterized in that the elastic support element (14) is configured as one or more rubber cushions.

12. A cleaning device (1) according to claim 1, characterized in that the cleaning device (1) has a propulsion unit (9), the housing (6) and the cleaning head (4) being arranged on the propulsion unit (9).

13. Cleaning device (1) according to claim 12, characterized in that the propulsion unit (9) comprises at least two linear units (21) connected in series one after the other.

14. Cleaning device (1) according to claim 13, characterized in that the linear units (21) of the propulsion unit (9) have different linear drives (22).

15. Cleaning device (1) according to claim 14, characterized in that said linear unit (21) comprises different pneumatic cylinders (10).

16. Cleaning device (1) according to claim 15, characterized in that the linear unit (21) comprises pneumatic cylinders (10) with different actuation forces.

17. A cleaning device (1) according to claim 12, characterized in that the cleaning head (4) and receptacle (6) are pivotably arranged on the propulsion unit (9).

18. A cleaning device (1) according to claim 17, characterized in that the cleaning head (4) and the receiving portion (6) are pivotably arranged on one of the linear units (21).

19. Cleaning device (1) according to claim 18, characterized in that the cleaning head (4) is pivotable from a working position (I) flipped open at the linear unit (21) to a maintenance position (II).

20. Cleaning device (1) according to claim 19, characterized in that the cleaning head (4) is lockable in the working position (I).

21. Cleaning device (1) according to claim 19, characterized in that the maintenance position (II) is offset with respect to the working position (I) by a pivot angle (α) of at least 45 °.

22. Cleaning device (1) according to claim 19, characterized in that the maintenance position (II) is offset with respect to the working position (I) by a pivot angle (α) of at least 60 °.

23. Cleaning device (1) according to claim 19, characterized in that the maintenance position (II) is offset with respect to the working position (I) by a pivot angle (α) of at least 90 °.

24. Cleaning device (1) according to claim 19, characterized in that the maintenance position (II) is offset with respect to the working position (I) by a pivot angle (α) greater than 180 °.

25. Cleaning device (1) according to claim 1, characterized in that the cleaning head (4) has at least two linearly extendable scrapers (5a) as cleaning elements (5).

Technical Field

The invention relates to a cleaning device for cleaning a rotor plate of a spinning rotor, comprising: a receptacle portion; a cleaning head supported on the receptacle, the cleaning head being capable of being advanced towards the spinning rotor for cleaning and having at least one cleaning element; and a braking device for braking and/or holding the spinning rotor in the advancing cleaning head. In this case, the cleaning head has a receiving region for the spinning rotor, which is at least partially cylindrical and defines an axial direction and a radial direction of the cleaning head.

Background

DE 3313926 a1 has disclosed a cleaning device for a spinning rotor, in which a cleaning brush is introduced as a cleaning element into the spinning rotor in order to clean a fiber collection groove of the spinning rotor. The cleaning device is provided with a bell-shaped brake having a brake lining at its edge. The cleaning head of the cleaning device can be pushed onto the spinning rotor, wherein the bell-shaped brake is supported on the outer surface of the spinning rotor and thereby brakes it. For cleaning the spinning rotor, the cleaning brush or the spinning rotor, if necessary, can also be driven. Insufficient cleaning may occur if the cleaning head with the bell brake and cleaning brush is offset relative to the bowl.

DE 10314936 a1 discloses a cleaning head in which a doctor blade is guided into the interior of a spinning rotor and is set in a rotating motion. For axial positioning of the cleaning head relative to the spinning rotor, an abutment element is provided on the cleaning head, which abutment element is supported on the outer surface of the spinning rotor. The engagement surface of the abutment member may also be inclined so as to achieve centring of the axis of the cleaning device relative to the axis of the bowl. In order to hold the spinning rotor during the cleaning process, an additional braking element can be arranged on the cleaning head, which additional braking element also acts on the outer circumference of the spinning rotor. However, the cleaning head is always not aligned with respect to the spinning rotor, for example due to an angular offset between the cleaning head and the spinning rotor, which may result in insufficient cleaning. It can also happen that, for example, only one of the braking elements actually bears against the spinning rotor or the braking element acts unevenly, so that the spinning rotor is not adequately held during cleaning.

Disclosure of Invention

In view of the above, it is an object of the present invention to improve the braking device of a cleaning head.

The solution of the invention to achieve the above object is a cleaning device having the features of claim 1.

A cleaning device for cleaning a rotor plate of a spinning rotor, comprising: a receptacle portion; a cleaning head supported on the receptacle, the cleaning head being capable of being advanced towards the spinning rotor for cleaning and having at least one cleaning element; and a braking device for braking and/or holding the spinning rotor in the advancing cleaning head. The cleaning head has a receiving region for a spinning rotor, which is at least partially cylindrical in shape. The axial and radial directions of the cleaning head are defined by the receiving area.

It is conceivable for the braking device to comprise a plurality of, in particular two, braking elements which are mounted on the cleaning head so as to be movable from a rest position into a braking position and each of which can be moved by means of its own drive. Since the braking elements are embodied as active braking elements by means of the drive and each braking element is driven by its own individual drive, the respective braking element can always be advanced correctly to the spinning rotor. By means of a separate drive, even if the cleaning head has a lateral or angular offset with respect to the spinning rotor,

or each braking element can firmly abut the spinning rotor even if the position of the braking element in its rest position with respect to the spinning rotor is different. The braking element is thus always able to exert a uniform braking force on the spinning rotor and can hold the spinning rotor firmly during cleaning.

According to a development of the invention, it is advantageous if the drives of a plurality of braking elements can be actuated jointly. This ensures that a plurality of braking elements are simultaneously moved from the rest position into the braking position and thus simultaneously act on the spinning rotor. For example, the drives may be provided with a common control signal for actuating the drives, thereby ensuring synchronous operation.

It is also advantageous if the drive of the brake element is configured as a pneumatic cylinder. Generally, such a cleaning device or a maintenance apparatus arranged with such a cleaning device inherently has compressed air, so that efficient driving of the brake element and quick response can be achieved.

It is also advantageous that the pneumatic cylinders are connected to a common source of compressed air and/or a common control valve.

If the pneumatic cylinders are connected to a common control valve, as described above, it is possible to ensure time-synchronized operation of the plurality of pneumatic cylinders, and thus simultaneous propulsion of the plurality of braking elements. It is of course also conceivable that the pneumatic cylinders are each connected to their own control valve, but that both control valves are controlled by means of a common control signal.

If the pneumatic cylinders are also connected to a common source of compressed air, they exert the same force on the spinning rotor due to the same operating pressure. Therefore, the action of the brake lever does not produce uneven braking effect, thereby avoiding the spinning rotor from slipping. Another advantage of this embodiment is that it is possible to support the cleaning head centered relative to the spinning rotor. Usually, the cleaning head rests on a special centering step surface of the rotor housing when it is advanced into the spinning position. However, if the cleaning head is not sufficiently centered relative to the spinning rotor, this can be compensated by a separate and actively drivable braking element. If the cleaning head is also supported on the cleaning device in a movement-limited manner and can also perform a certain alignment movement relative to the spinning rotor after it is advanced to the spinning position and centered on the centering surface or also has a certain play relative to the spinning rotor, a fine positioning of the cleaning head can also be performed by advancing the braking element.

It is particularly advantageous here if the braking elements are arranged movably on the cleaning device, so that they can be pushed by means of their drive to the outer circumference of the spinning rotor. The braking device is thus independent of the size of the spinning rotor, since in spinning rotors of different sizes the braking elements only have to travel different lengths of the path between their rest position and their braking position. In principle, however, it is also possible to advance the braking element, for example, to the opening edge of the spinning rotor.

It is also advantageous if the braking element is arranged on the cleaning device in such a way that it can be moved in the radial direction of the cleaning head. Since the braking element engages the inclined outer surface of the spinning rotor in the radial direction, a correct alignment of the cleaning head can be achieved in a simple manner even if the cleaning head is angularly offset with respect to the spinning rotor. It is of course also conceivable to bring the braking element in the axial direction of the cleaning head from its rest position into the braking position.

According to an advantageous development of the brake device, the brake element is designed as a brake lever. In this way, the brake element can be moved from the rest position into the braking position by means of the pneumatic cylinder in a particularly simple manner. In addition, due to the leverage, a sufficient braking force can be ensured in a simple manner. As an alternative, the braking element can also be designed as a brake shoe which is arranged on the cleaning head so as to be movable in the radial direction.

If the braking elements are designed as brake levers, they are preferably mounted on the cleaning head in a rotatable manner. The braking element can also be supported on a receptacle for the cleaning head connected to the cleaning head.

In order to be able to align the cleaning head relative to the spinning rotor in a simple manner by means of the braking element, it is advantageous if the cleaning head is supported on the receptacle by means of one or more elastic supporting elements. In this way, a radial offset of the cleaning head relative to the spinning rotor, and if necessary also an angular offset of the cleaning head relative to the spinning rotor, can be compensated. By this compensation, alignment of the cleaning head on the centering face of the cup shell can advantageously be carried out during advancement of the cleaning head.

For example, rubber cushions can be envisaged as elastic bearing elements which allow the cleaning head to be aligned in the radial direction and based on an angle relative to the axis of the spinning rotor. It is also conceivable to support the cleaning head on the receptacle by means of a spring element, such as a helical spring. It is also conceivable, instead of the cleaning head, for the receptacle connected to the cleaning head to be connected to the propulsion unit by means of an elastic support element.

It is also advantageous if the cleaning device has a propulsion unit on which the receptacle with the cleaning head is arranged. Thereby, the cleaning head can be arranged in a fully automatic maintenance device displaceable along the spinning machine and advanced to the spinning rotor for cleaning the spinning rotor. While during the displacement of the maintenance device the cleaning head is seated within the maintenance device.

It is advantageous here if the propulsion unit comprises at least two linear units connected in series one after the other. The cleaning device with the propulsion unit can thus be arranged in a space-saving manner in a displaceable maintenance device, and a relatively long propulsion path can be realized. In order to implement a particularly space-saving propulsion unit, it is possible here for the two linear units to be arranged spatially next to one another or one above the other, although they are functionally connected in series.

According to an advantageous development of the propulsion unit, the linear unit has different linear drives, in particular different pneumatic cylinders.

Different linear actuators may for example have different strokes. Thereby, for example, various possible arrangements of the cleaning device in the movable maintenance device are available. It is likewise conceivable to use the cleaning device for different spinning machines. In this case, for example, a first linear unit with a large stroke is implemented, a second linear unit with a small stroke is implemented, to match the propulsion paths of different spinning machines.

Alternatively or additionally, the linear units may also have different actuating forces or comprise pneumatic cylinders with different actuating forces. For example, the main advancing path can be realized by a first, larger pneumatic cylinder, and the contact pressure of the cleaning device against the spinning box (rotor housing) or the spinning rotor can be limited by a second, smaller pneumatic cylinder. For this purpose, the two linear units or the two pneumatic cylinders are displaced in time one after the other.

According to a further development of the cleaning device, it is advantageous if the cleaning head, in particular the cleaning head and the receptacle, are arranged pivotably on the propulsion unit, in particular on one of the linear units. Thereby facilitating replacement of the cleaning elements on the cleaning head or other maintenance work on the cleaning apparatus.

It is therefore particularly advantageous if the cleaning head can be pivoted from an operating position in which the linear unit is folded open into a maintenance position in which it is folded up from the linear unit. Thus, for example, even if the displaceable maintenance device is placed together with the cleaning device at the spinning machine and positioned in front of the workstation, maintenance work can be carried out on the cleaning device, in particular on the cleaning head.

It is also advantageous that the cleaning head can be locked in the working position. This prevents the cleaning head from folding accidentally during the advance into the spinning device or during the displacement of the maintenance device. It is particularly advantageous to provide the cleaning device with a locking device which can be locked autonomously when the cleaning head is transferred into the operating position. Therefore, the locking cannot be forgotten, and the operation safety of the cleaning device is improved.

Advantageously, the pivot angle by which the maintenance position is offset relative to the operating position is at least 45 °, preferably at least 60 °, particularly preferably at least 90 °. If the cleaning device is arranged in a displaceable maintenance device, the cleaning head can also be accessed from the side of the maintenance device facing away from the spinning machine after the cleaning head has been brought into the maintenance position.

It is also advantageous if the pivot angle by which the maintenance position is offset relative to the operating position is greater than 180 °. In particular, when the cleaning device is arranged on a higher machine or at a higher location in the displaceable maintenance device, the cleaning head can thereby be pivoted to a lower position facing the operator. This facilitates maintenance of the cleaning head.

It is also advantageous if the cleaning head has at least two linearly extendable scrapers as cleaning elements. These scrapers can be arranged in the cleaning head in a particularly simple and space-saving manner. Of course, the scraper can also be designed as a pivotable scraper, although other cleaning elements, such as blowing openings, wipers or the like, can also be provided in addition or alternatively.

Drawings

Further advantages of the invention are described below in connection with the examples. In the figure:

fig. 1 shows a schematic side section of a cleaning device and a spinning rotor, wherein the cleaning head of the cleaning device is just advanced towards the spinning rotor;

figure 2 shows a schematic cross-sectional side view of the cleaning device in figure 1, wherein the cleaning head has been advanced to the spinning rotor;

FIG. 3 shows a front view with a cleaning device and a cleaning head;

figure 4 shows a schematic cross-sectional side view of a cleaning device according to another embodiment;

figure 5 shows a schematic cross-sectional side view of another embodiment of a cleaning device and cleaning head;

figure 6 shows a side view of the cleaning apparatus with the cleaning head and propulsion unit in a retracted position;

FIG. 7 shows a side view of the cleaning device of FIG. 6 in an advanced position; and

figure 8 shows a side view of the cleaning apparatus with the cleaning head pivotable from the working position to the maintenance position.

Detailed Description

In the description of the following figures, the same reference numerals are used for the same and/or at least comparable features in the various exemplary embodiments with respect to their design and/or mode of action. If certain features are not repeated in detail in a certain figure, their design and/or mode of action correspond to the design and mode of action of the features described above with reference to other figures. Likewise, for the sake of clarity, only a corresponding one of a plurality of identical features or components is generally illustrated in the figures and labeled in the figures.

Fig. 1 shows a schematic side section of a cleaning device 1 for cleaning a rotor disk 2 of a spinning rotor 3. The spinning rotor 3 is built into a spinning box of an open-end spinning machine as usual (the spinning box and the spinning machine are not shown in this figure, the spinning machine 24 is only schematically shown in fig. 8) and is used for spinning the fiber material into a yarn. For this purpose, the fibers are introduced into the rotor disk 2 of the spinning rotor 3, are lowered into the rotor groove 8 of the spinning rotor 3 and are twisted into the end of the already produced yarn. During operation, various contaminants accumulate in the spinning rotor 3 and in particular in the rotor slot 8, which must be removed from time to time, otherwise they may cause disturbances in the spinning operation.

For cleaning the spinning rotor 3, a cleaning device 1 is therefore provided, which cleaning device 1 is usually arranged in a maintenance device 35 (fig. 8) not shown in the present figure, which can be displaced along the spinning machine. The cleaning device 1 has a receptacle 6, the cleaning head 4 being arranged on this receptacle 6 in a known manner. At least one cleaning element 5 is arranged on the cleaning head 4, which cleaning element 5 can clean the interior of the spinning rotor 3, in particular the rotor slot 8. In this example, two blades 5a are pivotably arranged as cleaning elements 5 on the cleaning head 4. The cleaning head 4 has an at least partially cylindrical receiving region 7, in which receiving region 7 the cleaning head 4 can receive the rotor disk 2 of the spinning rotor 3 for cleaning. At the same time, the cylindrical receiving region 7 defines with its axis 15 (longitudinal axis of the cylindrical receiving region 7) an axial direction AR of the cleaning head 4 and a radial direction RR of the cleaning head 4 oriented perpendicular to the axis 15 and thus perpendicular to the axial direction AR. At least one cleaning element 5, in this case two scraper blades 5a, is arranged in a manner known per se on a carrier element 31, which carrier element 31 is connected to the electric motor 26 via a drive shaft 25. The motor 26 is shown only in fig. 5 to 8. In this way, the carrier element 31 can be set in rotation with the cleaning element 5 for cleaning the spinning rotor 3.

In order to hold the spinning rotor 3 during the cleaning process and prevent it from rotating concomitantly, the cleaning head 4 is also provided with a braking device 11. The braking device 11 has a plurality of (in this case two) braking elements 12. In this case, these braking elements 12 are configured such that they can be advanced to the outside or periphery of the spinning rotor 3 or rotor disk 2. In this example, the braking element 12 is arranged inside the cleaning head 4.

Fig. 2 shows the cleaning head 4 or the cleaning device 1 from fig. 1 after the cleaning head 4 has been advanced into the spinning rotor 3. The rotor disc 2 of the spinning rotor 3 is now accommodated in the accommodation area 7 of the cleaning head 4. During the accommodation of the rotor disk 2 in the accommodation region 7 or even after the accommodation of the rotor disk 2 in the accommodation region 7, the braking element 12 is actuated and thereby brought from its rest position shown in fig. 1 into the braking position shown in fig. 2. In the rest position, the braking element 12 is arranged close to a wall or bottom of the cleaning head 4, so that the rotor disc 2 can be easily introduced into the receiving region 7. In the braking position, the braking element 12 is pushed into the spinning rotor 3, in particular into the outer wall of the rotor disk 2 as shown, and is thus in a position in which it can exert a braking force thereon. In the present example, the braking element 12 is designed as a brake lever 12 a. Furthermore, after the cleaning head 4 has been advanced to the spinning rotor 3, the cleaning elements 5 (in this figure the scrapers 5a) are pivoted so that they project into the rotor slot 8. In this way, the cleaning elements 5 can clean the cup well 8 (see fig. 5 to 8) as soon as the carrier element 31 is set in rotation by the electric motor 26.

Fig. 3 shows a front view of the cleaning device 1, wherein the receiving region 7 can be seen directly. As can be seen from the figures, the brake element 12 is likewise designed here as a brake lever 12a, which brake lever 12a can be pivoted from a rest position shown in solid lines into a braking position shown in dashed lines. In this case, the braking element is arranged on the cleaning device 1 in such a way that it can move in the radial direction RR of the cleaning head 4. In contrast, the brake lever 12a is supported on the cleaning head 4 so as to be rotatable about the rotational axis 32.

For the movement of the brake elements 12 (brake levers 12a in the present illustration), in each case a separate actuator 13 is provided. In the present case, the actuators 13 each comprise a pneumatic cylinder 10, the piston rod 16 of which is connected to the respective associated brake lever 12a via a pivot lever 19. In this example, the pivot lever 19 is directly coupled to the rotational shaft 32 of the brake lever 12 a. It is of course also conceivable for each drive 13 to be provided as an electric motor. Wherein each braking element 12 has its own drive 13, so that the braking element 12 can be moved from the rest position to the braking position alone, so as to abut against the spinning rotor 3 even in adverse conditions such as a shift between the spinning rotor 3 and the cleaning head 4.

In this case, the braking elements 12 are connected to the common control valve 17 via respective pneumatic lines 20 and are in turn supplied with air by a common compressed air source 18. By means of the common control valve 17, a time-synchronized joint actuation of the pneumatic cylinders 10 or the brake elements 12 can be ensured. Furthermore, the same working pressure is supplied to the pneumatic cylinders 10 by means of a common control valve 17 and/or a common compressed air source 18, respectively. The brake lever 12a or the brake element 12 thus exerts exactly the same braking force on the spinning rotor 3, so that the spinning rotor 3 is always held firmly during the cleaning process.

The described cleaning head 4 with the individually drivable braking elements 12 can be used in a particularly advantageous manner in combination with a cleaning head 4 supported in a movement-limited manner in order to align the cleaning head 4 relative to the spinning rotor 3.

Fig. 4 shows such a cleaning device 1, wherein the cleaning head 4 is supported in a movement-limited manner. In the present case, the cleaning head 4 is supported on the receptacle 6 by means of a plurality of elastic supporting elements 14, the elastic supporting elements 14 being configured here as rubber cushions. The cleaning head 4 can move in the radial direction RR relative to the accommodating portion 6, as indicated by the two-dot chain line. Thereby, the cleaning head 4 may also be slightly inclined with respect to the accommodating portion 6, as indicated by the single-dot chain line. In this way, when the cleaning head 4 abuts against a counter surface (not shown) of the rotor housing correctly positioned with respect to the spinning rotor 3, the cleaning head 4 can automatically align with respect to the spinning rotor 3 due to its limited mobility. However, if the cleaning head 4 is not centered enough or is angularly offset relative to the spinning rotor 3, it is ensured by a plurality of braking elements 12 which are each actively actuated that they all act with the same braking force on the spinning rotor 3. In this way, the braking element 12 can compensate for any positional deviations that may remain after centering or even fine positioning of the cleaning head 4 relative to the spinning rotor 3.

Furthermore, a blow hole 5b is exemplarily shown in fig. 4 as an additional cleaning element 5. For example, the blow holes 5b can be activated during the burial of the rotor disc 2 in the accommodation area 7 in order to purge the open edge and the slide wall of the spinning rotor 3. It should be understood that the cleaning elements 5 in fig. 4 and other figures are shown by way of example only. In each of the illustrated embodiments, not only the blade 5a but also other cleaning members 5 in addition to or instead of the blade 5a may be provided.

Furthermore, variants with regard to the doctor blade 5a are also possible. For example, fig. 5 shows a cleaning head 4 in which a blade 5a is arranged on a carrier element 31 in a non-pivotable but linearly movable manner. It goes without saying that not only two blades 5a but also a plurality of blades 5a may be arranged in each embodiment.

Finally, fig. 6 and 7 also show a cleaning device 1, in which the cleaning head 4 can be pushed into the spinning rotor 3 by means of a pushing unit 9. For this purpose, the receptacle 6 with the cleaning head 4 is arranged on the propulsion unit 9 by means of a holding arm 27. In this example, the propulsion unit 9 comprises two linear units 21 arranged one after the other. In this case, each linear unit 21 has a linear drive 22 (in this case configured as a pneumatic cylinder 10), a displaceable carriage 28 and a guide 33 which guides the carriage 28 in each case. In this case, the guide 33 is formed in the form of an elongated hole in the base body 34 of the propulsion unit 9, wherein the carriage 28 can slide in the guide 33 by means of the rollers 30.

In this example, the linear actuator 22 (in this figure, the pneumatic cylinder 10 of the linear unit 21) is of a different construction. In this case, the first carriage 28 of the two carriages 28 (in this case the lower carriage 28) is driven by means of a larger pneumatic cylinder 10 shown at the bottom in the figure, which has a longer stroke and, because of its size, also has a larger actuating force. The pneumatic cylinder 10 is directly fixed to the base body 34 of the propulsion unit 9 and actuates the lower carriage 28 with its piston rod 16. The lower carriage 28 has a connecting element 29 and is connected to the second linear unit 21 shown at the top in the figure by means of this connecting element 29. For this purpose, the pneumatic cylinder 10 of the upper linear unit 21 is fixed to the connecting element 29 and actuates the carriage 28 of the upper linear unit 21 with its piston rod 16. The pneumatic cylinder 10 of the upper linear unit 21 is implemented smaller than the lower or first pneumatic cylinder 10 and therefore has a shorter stroke and a lower actuation force.

Fig. 6 shows the propulsion unit 9 in a retracted position as it is arranged in the maintenance device, for example during a standstill. In this case, the piston rod 16 is retracted into the pneumatic cylinder 10 and the two carriages 28 are at the beginning of their respective ranges of motion, in this case to the right in the figure. In this example, the two carriages 28 are placed substantially one above the other.

At this time, if the first pneumatic cylinder 10 (the pneumatic cylinder 10 shown at the lower side in the drawing) is extended, the first carriage 28 (the lower carriage 28 in this example) moves to the end of its range of motion (the left side in the drawing in this example). The carriage 28 is also carried along by the second linear unit 21 through the connecting element 29 to which the second linear unit 21 is fixed. After the first carriage 28 has reached the end of its range of motion, it is also possible, if necessary, to actuate the second pneumatic cylinder 10 during the displacement of the first carriage 28, so that the second carriage 28 is displaced even further to the end of its range of motion. This fully extended condition of the two pneumatic cylinders 10 is shown in figure 7.

By using two different linear actuators 22 (in this figure two different pneumatic cylinders 10) a larger propelling movement can be achieved by means of the large pneumatic cylinder 10, while by means of the small pneumatic cylinder 10 the contact pressure of the cleaning head 4 against the cup housing supporting the cleaning head can also be limited. Also, with a small pneumatic cylinder 10, different propulsion paths can be achieved to accommodate different machines. In this case, it is particularly advantageous if standard components can be used, but a variety of different feed paths or contact pressures can be realized.

Fig. 8 shows a further embodiment of the cleaning device 1, in which the cleaning head 4 is pivotably supported on the propulsion unit 9. In this example, the cleaning head 4 and the accommodating portion 6 are pivotably arranged on the carriage 28 of the second linear unit 21 via the holding arm 27. Thereby, the cleaning head 4 can be pivoted from an operating position I shown by a solid line, in which the cleaning head 4 is folded over at the propulsion unit 9 (in this figure, the upper linear unit 21), to a maintenance position II shown by a double-dashed line, in which the cleaning head 4 is folded up from the propulsion unit 9 (in this figure, the upper linear unit 21).

AS can be seen from fig. 8, the cleaning device 1 is arranged in a displaceable maintenance apparatus 35 such that the cleaning head 4 faces the spinning machine 24 and is thus located on the working side AS of the maintenance apparatus 35, whereby the cleaning head 4 can be advanced to the individual spinning positions of the spinning machine 24, however, such that the cleaning head 4 is inaccessible for maintenance work, for example for exchanging the cleaning element 5 or the cleaning head 4 itself, by pivoting the cleaning head 4 into the maintenance position II, the cleaning head 4 is accessible from the operating side BS of the maintenance apparatus 35, the pivoting angle α between the working position I and the maintenance position II is preferably at least 90 °, particularly preferably greater than 120 ° AS shown, in order to ensure easy access to the cleaning head 4 from the operating side BS, in this case a locking element 23 is also provided which secures the cleaning head 4 in the working position I, in this case the locking element 23 locks the holding arm 27 in the working position I.

Depending on the arrangement of the cleaning device 1 in the maintenance arrangement 35 and the arrangement of the cleaning head 4 on the cleaning device 1, it may also be reasonable for the pivot angle α between the working position I and the maintenance position II to be greater than 180 °, whereby the receiving region 7 of the cleaning head 4 is slightly downward in the maintenance position II, so that the accessibility of the operator is improved.

The invention is not limited to the embodiments shown in the drawings and described herein. Even if features are shown and described in different embodiments, combinations of these features may also fall within the scope of the claims as variants.

List of reference numerals

1 cleaning device

2 revolving cup plate

3 spinning rotor

4 cleaning head

5 cleaning element

5a scraper

5b air blowing hole

6 locus of containment

7 accommodating area

8 revolving cup groove

9 Propulsion Unit

10 pneumatic cylinder

11 brake device

12 braking element

12a brake lever

13 driver

14 support element

15 axis

16 piston rod

17 control valve

18 compressed air source

19 pivoting lever

20 pneumatic pipeline

21 linear unit

22 linear driver

23 locking element

24 spinning machine

25 drive shaft

26 electric motor

27 holding arm

28 carriage

29 connecting element

30 rollers

31 load bearing element

32 rotating shaft

33 guide part

34 base body

35 maintenance device

Axial direction of AR

RR radial direction

I working position

II maintenance location

α pivot angle

AS working side

BS operation side