Spinning can supporting device for rotating a spinning can, textile machine and method

Abstract

The invention relates to a spinning can supporting device (20) for rotating a spinning can (4), in particular an automatedly guided spinning can, underneath a depositing device (14) of a textile machine (1), wherein the spinning can supporting device (20) comprises: a holding device (43) which can be fixed to a base (7) of the textile machine (1); a can plate (13) along which the spinning can (4) can move, which can plate is fastened to the holding device (43) so as to be rotatable about a vertical axis (21); and a drive and braking system (22) for rotatingly driving the can plate (13) about the vertical axis (21) and braking the can plate (13), characterized in that, in order to repeatedly brake and hold the can plate (13) in a defined rotary loading position, the drive and braking system (22) comprises a rotary position sensor system (48) which is configured to detect the defined rotary loading position of the can plate (13). The invention also relates to a textile machine and to a method.

Description

[0001] Title: Spinning can support device for rotating a spinning can, textile machine and method

[0002] Description

[0003] The invention relates to a spinning can support device for rotating a spinning can, in particular a self-propelled spinning can, under a storage device of a textile machine. The spinning can support device comprises a holding device that can be secured to a base body of the textile machine, a can plate that the spinning can can move over and that is rotatably mounted on the holding device about a vertical axis, and a drive and braking system for rotating the can plate about the vertical axis and braking the can plate. Furthermore, the invention relates to a textile machine and a method.

[0004] DE102015110585 A1 discloses a can changer for the linear change of a spinning can on a spinning preparation system, such as a draw frame, carding machine, or combing machine. The can changer has a driven displacement device for transporting an empty spinning can on a base plate along a guide from a waiting position to a rotating can plate.

[0005] EP3331791 B1 discloses a device for filling a spinning can with fiber sliver produced in a spinning preparation plant. The device has two adjacent can placement stations for sequentially filling the spinning cans. A rotatably driven can plate is provided for each can placement station. Three rotation transmission profiles are mounted on the top surface of each can plate, which extend in a curved manner at their free ends in the working direction of rotation of the can plate. When the can plate begins to rotate, the rotation transmission rods engage the wheels of the spinning can from behind.

[0006] A disadvantage is that the can plate does not always remain in the same rotational position. This can lead to uncertainty regarding the alignment of the spinning can and negatively impact automated processes.

[0007] The object of the invention is to provide a spinning can carrying device or a textile machine that can be better integrated into automated processes. Furthermore, the object of the invention is to provide a method for filling the spinning can that makes automated operation smoother, more efficient, and more reliable.

[0008] The object is achieved by a spinning can carrying device of the type mentioned at the outset in that, for the repeatable braking and holding of the can plate in a defined loading rotational position, the drive and braking system has a rotational position sensor which is configured to detect the defined loading rotational position of the can plate.

[0009] The rotation position sensor system leads to improved control and reproducibility of the rotation position and optimizes the reliability of the sliver can carrying device. A benefit is that the drive and braking system can always bring the can plate to a standstill in the loading rotation position, which describes a fixed rotation position around the vertical axis of the can plate. Thus, the rotation position of the can plate at the beginning of each rotation can correspond to the position reached at the end of the rotation. This enables more convenient and smoother loading and / or unloading of the sliver can, since the orientation of the sliver can after the rotation is now known. This allows the sliver can carrying device to be better integrated into automated processes. This is particularly advantageous when the sliver can is self-propelled or driverless.

[0010] If the drive and braking system is configured to always bring the can plate to a standstill in the one defined loading rotational position, the one defined loading rotational position can also be referred to as the loading and unloading rotational position. In particular, only the one defined loading rotational position is provided. Alternatively, several defined loading rotational positions can be provided into which the drive and braking system can bring the can plate to a standstill in a defined manner. In particular, a maximum of four and more preferably a maximum of two defined loading rotational positions are provided. For example, a first defined loading rotational position, which can also be referred to as the loading rotational position, and a second defined loading rotational position, which can also be referred to as the unloading rotational position, can be provided.This can be advantageous if the can plate is to assume the loading position for loading and the unloading position for unloading. This position can be rotated around the vertical axis by 90, 180, or 270 degrees relative to the first loading position, for example, to realign the spinning can before it leaves the can plate. This allows the spinning can support device to be integrated into a particularly compact textile machine.

[0011] The rotary position sensor system can comprise a rotary position sensor fixed relative to the can plate and at least one position marker arranged on the can plate. This ensures, in a simple manner, that the can plate can always be brought to a stop in the desired loading rotary position, which significantly increases the efficiency and accuracy of tasks such as loading, unloading, automated processes, etc. In principle, the rotary position sensor can also be arranged on the can plate, with the position marker fixed. Alternatively or additionally, a rotary encoder can also be provided directly on the drive of the drive and braking system, for example, an electric motor.

[0012] The rotary position sensor can be an incremental rotary position sensor, in particular, that generates pulses when the position marker is passed. The generated pulses can be converted into electrical signals in a conventional manner and evaluated by a control unit of the drive and braking system or a higher-level control unit of the textile machine to detect the can plate's assumption of the loading rotary position. This allows for a simple and cost-effective detection of the assumption or reaching of the loading rotary position when the can plate is decelerated, in order to bring the can plate to a stop in the loading rotary position.In filling operation, in which the drive and braking system rotates the can plate, at least one position marking will repeatedly pass by the rotational position sensor and be recorded each time, so that this information can be used, for example, to determine the speed of the can plate.

[0013] The rotary position sensor can also include an absolute rotary position sensor, which provides the precise absolute rotary position. Since precise absolute detection of the rotary position of the can plate is not necessary, the incremental rotary position sensor is preferable for cost reasons. In principle, the rotary position sensor can also include a light barrier, an optical sensor, an ultrasonic sensor, a magnetic sensor, a switch, or the like to generate the pulses when the position mark is passed. The choice of rotary position sensor depends on the technical requirements, the environment, and other factors. For example, the at least one position mark can be a magnetic mark or an optical mark. A magnetic dot or a magnetic stripe can be detected by a magnetic sensor.A reflective or non-reflective stripe, color changes, or patterns can be detected by an optical sensor. A photoelectric sensor can also be used, interrupting a light beam to indicate a specific position. Depending on the requirements, the rotary position sensor can also include a Hall sensor that can detect changes in the magnetic field. Depending on the requirements, precision, and application, various types of marker points or sensors can be used to capture the desired position information.

[0014] For example, the at least one position marking can be a cam. The cam can be an eccentrically shaped elevation that is detected, for example, by the rotational position sensor. The at least one position marking, in particular a cam, can be arranged on the can plate. Furthermore, the at least one position marking, in particular a cam, can be arranged in a rotationally fixed manner on a driven element of the drive and braking system that is arranged concentrically to the vertical axis. For example, the at least one position marking, in particular a cam, can be arranged on a driven wheel, for example, be molded onto it. The at least one position marking, in particular a cam, can protrude radially to the vertical axis beyond a central outer circumference of the driven element.Alternatively, the at least one position marker can also be a defined defect, depression, or the like, which can be provided in an annular component with evenly distributed teeth or protrusions. If the rotary position sensor normally detects regularly spaced teeth, protrusions, or the like and suddenly encounters the defect where a tooth is missing or a depression is present, it can recognize this point as a position marker.

[0015] In a further embodiment, the rotational position sensor can be arranged such that it is aligned with the at least one position marker when in the loading rotational position. This increases the precision of assuming the loading rotational position.

[0016] According to a first embodiment, it can be provided that the rotational position sensor system has, in a working direction of rotation of the can plate, upstream of the one or first rotational position sensor, a further or second rotational position sensor for defining the braking point of the can plate. This allows the can plate to be braked more precisely and come to a standstill exactly in the loading rotational position. If the can plate is to be stopped, for example because the filling process of the sliver can is to be terminated, the braking process can be initiated as soon as the second rotational position sensor has detected the at least one position marking. For example, a distance in the circumferential direction around the vertical axis between the first rotational position sensor and the second rotational position sensor can be adjustable. The distance refers to a circumferential distance or an arc section around the vertical axis.By adjusting the distance, a braking angle of the can plate can be taken into account. The braking angle corresponds to the rotational movement of the can plate around the vertical axis as it decelerates and finally comes to a standstill. The braking angle can depend on various factors, such as the can size used and the associated maximum weight of the spinning can to be filled, the diameter of the can plate, the inertia of the can plate, the maximum rotational speed in the working direction of the can plate, and the like. This allows the loading rotation position to be achieved more precisely by adjusting the distance. The distance between the first rotational position sensor and the second rotational position sensor can also be fixed at the factory.

[0017] According to a second embodiment, which is an alternative to the aforementioned first embodiment, the rotational position sensor system can comprise precisely one rotational position sensor. This allows manufacturing costs to be reduced. Several position markings, for example, two, can be applied to the can plate. For example, the first position marking can serve to identify a braking point, upon reaching which the can plate can be braked. The second position marking, following in the working direction of rotation, can serve to identify the loading rotational position, upon reaching which the can plate is brought to a complete standstill.

[0018] Furthermore, the can plate can have at least one parking stop element on its upper side facing away from the holder for repeatable positioning of the spinning can during loading and for securing the spinning can in a defined loading position on the can plate when rotating around the vertical axis. This prevents the spinning can from slipping or changing its position during the rotation of the can plate. In other words, the at least one parking stop element ensures that the spinning can does not change its relative position to the can plate during the rotation process. This leads to precise and reproducible alignment of the spinning can on the can plate, which significantly increases the efficiency and accuracy of tasks such as loading, unloading, automated processes, etc. This ensures that the alignment of the spinning can is always the same when loading and unloading the spinning can onto the can plate while it is in the loading rotation position.This is particularly advantageous when the spinning can is self-propelled or driverless. The defined loading position can also be referred to as a defined entry and exit position.

[0019] According to one embodiment, the at least one parking stop element for accommodating a running wheel, in particular a drive wheel of the spinning can, can be designed as a recess. The typically unguided, driven wheel, or drive wheel, of the spinning can can be moved into the recess, which can be formed on or in the top surface of the can plate, during the loading process. This arrangement ensures that the spinning can remains stable and securely positioned on the can plate during the rotation process. In particular, the support plate has several of the parking stop elements. For example, exactly two of the parking stop elements can be provided to accommodate the typically two drive wheels of the driverless spinning can. Such a driverless transported spinning can is described in the applicant's German patent application dated May 10, 2022, with the file number 10 2022 111 675, which was still unpublished at the time of filing.1, to which reference is hereby made in its entirety. The driverless sliver can has a chassis with two rigid wheels driven by electric motors and, for example, two support wheels that can pivot freely about the vehicle's vertical axis. The at least one parking stop element can also be designed as a drive-over elevation on the top side of the plate, for example like a hump, a bump or the like, so that the impeller to be picked up, in particular the drive wheel of the sliver can, first drives over a first elevation and is held between two adjacent elevations. According to a further embodiment, the at least one parking stop element can be a non-slip coating on the top side of the plate. This increases the friction between the can plate and the sliver can, whereby the sliver can securely holds its position during the rotational movement of the can plate.Likewise, magnets for holding the spinning can or mechanical devices such as clamps, gripping devices or the like can be provided.

[0020] Furthermore, the at least one depression can be a transverse trough. The transverse trough can be designed as a depression or indentation in the top side of the can plate, which serves to accommodate the respective impeller. For this purpose, the depression, in particular the transverse trough, can be designed such that the impeller fits into it and can be placed therein. The at least one transverse trough can define a trough axis that runs perpendicular to a main axis of the can plate. The main axis can be a longitudinal axis running perpendicular to the vertical axis, which, in the loading rotational position of the can plate, is aligned parallel to a travel path for the sliver can. In this way, the sliver can pushed onto the can plate or is self-propelled can move into the transverse trough with the respective impeller.This ensures, on the one hand, safe and uncomplicated loading and unloading of the spinning can and, on the other hand, a secure hold of the spinning can on the can plate during the spinning process.

[0021] The profile of at least one parking stop element, in particular the transverse recess, can be V-shaped. This offers the advantage of increased stability and guidance of the sliver can's impeller. The impeller is guided and centered in the respective V-shaped parking stop element, in particular the transverse recess. This leads to precise positioning of the impeller in the recess and minimizes lateral movement or inaccuracies.

[0022] Furthermore, the can plate can have passage troughs on the top side for accommodating additional, in particular free-running, wheels of the spinning can. The passage troughs serve to bring the spinning can wheels not accommodated in the at least one parking stop element to the same height as the wheel accommodated in the at least one parking stop element. The can plate thus ensures that the spinning can is aligned horizontally in the loading position and is not tilted. In particular, the passage troughs are designed to allow the spinning can, or rather its wheels, to pass through without attempting to center or position the wheels.

[0023] The can plate can be arranged so that it can be replaced. Because the at least one parking stop element and optional passage troughs are formed on the can plate, the can plate can be easily adapted to the spinning cans used in the spinning mill. In particular, the distance between the elements, in particular the at least one parking stop element and the passage troughs, as well as their size, geometry, and number, can be adapted to the spinning cans used in the spinning mill. The at least one parking stop element can have a longitudinal extent, i.e. an extent along the longitudinal axis of the can plate, of at least 50 millimeters and / or a maximum of 150 millimeters. The longitudinal extent is preferably between 60 millimeters and 90 millimeters, and more preferably the longitudinal extent is at least approximately 75 millimeters.The at least one parking stop element can have a transverse extension, i.e., an extension along the transverse axis of the can plate, of at least 30 millimeters and / or a maximum of 1000 millimeters. Preferably, the transverse extension is between 45 millimeters and 90 millimeters, and more preferably, the transverse extension is at least approximately 60 millimeters. The at least one parking stop element can have a depth, i.e., an extension along the vertical axis of the can plate, of at least 3 millimeters and / or a maximum of 20 millimeters. Preferably, the depth is between 5 millimeters and 15 millimeters, and more preferably, the depth is at least approximately 9 millimeters.

[0024] The drive and braking system can comprise a drive motor, for example an electric motor. A driven wheel can be arranged on the can plate, which can be connected, for example, via a traction mechanism to a drive wheel, which can be located, for example, on a motor shaft of the drive motor. In particular, the traction mechanism can be a belt drive, wherein a belt can engage positively with the drive wheel and non-positively with the driven wheel. The belt can be, for example, a V-belt, toothed belt, etc. Alternatively, a chain, a rope, a band, or the like can be used as the traction mechanism. To brake the can plate, the drive force of the drive motor or the speed of the drive motor can be electronically controlled, in particular gradually reduced, in order to achieve controlled braking of the can plate. Additionally or alternatively, the can plate could be braked by friction.This can be achieved, for example, by increasing the pressure of the belt on the driven wheel. The belt tension can also be adjusted using an adjustable tensioning device, in particular with at least one tension pulley. Other means for braking a rotating can plate in a controlled manner are also possible. To brake the can plate, the can plate could also be decoupled from the drive train of the drive motor. The drive and braking system could also include an electromagnetic brake, a friction brake, a pneumatic or hydraulic brake, etc. Alternatively, a direct drive motor with brake is also possible, which drives the can plate directly during filling operation and brakes after the filling operation has been completed and stops in the loading rotation position.

[0025] Furthermore, the drive motor can be equipped with a parking brake. This allows the drive motor to securely hold the can plate in its rest position during standstill, simplifying loading and unloading. The parking brake can be activated when the can plate has come to a standstill in the loading position, or when the speed of the can plate is zero revolutions per minute. The parking brake could also be implemented using a frequency converter.

[0026] A further solution to the above-mentioned problem consists in a textile machine with the above-described sliver can support device and a control unit configured to control the sliver can support device. The textile machine according to the invention provides the same advantages as those described in connection with the sliver can support device according to the invention, so that reference is made here for short to the above description. It is understood that all of the aforementioned embodiments of the sliver can support device are transferable to the textile machine and vice versa.

[0027] Furthermore, it can be provided that the textile machine has a platform which can be traveled over by the spinning can and which defines a travel path for the spinning can and into which the can plate can be embedded, wherein the control unit is configured to control the drive and braking system in such a way that the can plate for loading and unloading the spinning can stands still or comes to a standstill in the loading rotational position, wherein the at least one parking stop element is arranged at a right angle to the travel path in the loading rotational position.

[0028] The holding device and other components, such as the drive and braking system, can be attached to the base body. The base body of the textile machine can comprise the base plate and / or a support structure that carries the base plate, etc. The can plate can be embedded in the base body, for example the base plate. Preferably, the top surface of the can plate is flush with the drivable top surface of the base body, in particular the base plate. This enables the spinning can to be easily driven onto or pushed from the base plate onto the can plate. This is particularly advantageous if the spinning can is self-propelled or driverless and / or the spinning can is pushed onto the can plate by means of a can pusher. In particular, the textile machine comprises the can pusher for pushing the spinning can or several of the spinning cans along the travel path.

[0029] The control unit can be signal-connected to the drive and braking system. In particular, the control unit is configured to control the drive and braking system such that the can plate is driven to rotate during a filling process of the sliver can placed on the can plate, is braked at the end of the filling process, and is brought to a standstill in the loading rotational position at the end of the filling process. The braking process can be initiated by the control unit when the sliver can is filled. The control unit can register this, for example, when a defined amount of fiber sliver has been produced by the textile machine. Likewise, the reaching of a predetermined filling quantity of the sliver cans can be detected by optical systems such as a camera or the like, or the filling process can be terminated by manual operator input.

[0030] The textile machine can be, for example, a spinning preparation machine, in particular a can filling station, such as the T-MOVE or T-MOVE2 of the Trützschler Group SE, a can changer, a draw frame, a combing machine, a carding machine, etc.

[0031] A further solution to the above-mentioned problem consists in a method for filling the spinning can, in particular a self-propelled spinning can, on the textile machine described above, the method comprising the following steps:

[0032] Holding the can plate in at least one loading rotation position;

[0033] Loading the spinning can onto the can plate, in particular wherein the spinning can is positioned and secured on the can plate in the loading position by means of the at least one parking stop element;

[0034] Filling the spinning can with fiber sliver delivered by the textile machine, while the drive and braking system rotates the can plate around its vertical axis; initiating a braking process of the can plate by the control unit;

[0035] Braking the can plate;

[0036] Holding the can plate in at least one loading rotational position when the rotational position sensor detects the loading rotational position; and unloading the spinning can from the can plate.

[0037] The method according to the invention results in the same advantages as those described in connection with the textile machine according to the invention or the spinning can support device, so that reference is made here for short to the above description. It is understood that all mentioned configurations of the spinning can support device or the textile machine are transferable to the method and vice versa.

[0038] In a further embodiment, if the rotary position sensor system comprises the first and the second rotary position sensor, the method can provide the following steps:

[0039] Holding the can plate in the at least one loading rotational position in which the at least one position marking is aligned with the first rotational position sensor;

[0040] Loading the spinning can onto the can plate, in particular wherein the spinning can is positioned and secured on the can plate in the loading position by means of the at least one parking stop element;

[0041] Filling the spinning can with fiber sliver delivered by the textile machine, while the drive and braking system rotates the can plate around the vertical axis;

[0042] Initiation of a braking process of the can plate by the control unit;

[0043] Braking the can plate when the second rotary position sensor detects the position mark;

[0044] Holding the can plate in the at least one loading rotational position when the first rotational position sensor detects the position marking; and unloading the spinning can from the can plate.

[0045] The braking process can be initiated when the spinning can has been filled with a specified length of the produced fiber sliver, when a manual user input has been made, etc. The control unit then waits until the second rotary position sensor detects the passing of at least one position marker. Only then does braking occur. The drive and braking system brings the can plate to a standstill when at least one position marker is detected by the first rotary position sensor. The can plate is then in the loading rotary position.

[0046] In an alternative embodiment, if the rotary position sensor system comprises only one rotary position sensor, the method may provide the following steps:

[0047] Holding the can plate in the at least one loading rotational position in which the at least one position marking is aligned with the rotational position sensor;

[0048] Loading the spinning can onto the can plate, in particular wherein the spinning can is positioned and secured on the can plate in the loading position by means of the at least one parking stop element;

[0049] Filling the spinning can with fiber sliver delivered by the textile machine, while the drive and braking system rotates the can plate around its vertical axis; initiating a braking process of the can plate by the control unit;

[0050] Braking of the can plate when the rotary position sensor detects the position mark;

[0051] Slowly continue to rotate the can plate around the vertical axis, especially around 360 degrees;

[0052] Holding the can plate in the at least one loading rotational position when the rotational position sensor detects the position mark again; and

[0053] Unloading the spinning can from the can plate.

[0054] The unloading of the spinning can from the can plate can be carried out, for example, with the assistance of the can pusher, manually or independently by the drive of the self-propelled spinning can.

[0055] Further measures improving the invention are described in more detail below together with the description of a preferred embodiment of the invention with reference to the figures.

[0056] They show:

[0057] Figure 1 is a perspective view of a textile machine according to an embodiment of the present invention;

[0058] Figure 2 is a plan view of a section of the textile machine comprising a spinning can support device according to the invention;

[0059] Figure 3 is a partially sectioned side view of a spinning can positioned on a can plate of the spinning can carrying device in a loading position;

[0060] Figure 4 is a perspective view of a plate top of the jug plate;

[0061] Figure 5 is a perspective view of the top of an alternative jug plate;

[0062] Figure 6 is a plan view of the sliver can support device positioned in a loading rotation position, with parts of the textile machine removed for clarity;

[0063] Figure 7 shows the spinning can carrying device from Figure 6, which is here located at a braking point;

[0064] Figure 8 shows a driverless sliver can in bottom view, following a magnetic belt; and

[0065] Figure 9 is a flow chart of a method for automatically filling the self-propelled spinning can of Figure 8 on the textile machine of Figure 1.

[0066] Figure 1 shows a textile machine 1 according to an embodiment of the present invention. Further details of the textile machine 1 are shown in Figures 2 to 7.

[0067] By means of ramp devices 2, 3, both manually and driverlessly transported spinning cans 4 can overcome a height difference 5 between a base 6 on which the textile machine 1 is installed and a raised base plate 7 of the textile machine 1. An exemplary embodiment of the driverlessly transported spinning can 4 is shown in Figure 8, which shows its bottom view. Such a driverlessly transported spinning can 4 is described in the applicant's German patent application dated May 10, 2022, with the file number 10 2022 111 675.1, which was still unpublished at the time of filing and is hereby incorporated by reference. According to Figure 8, the driverlessly transported spinning can 4 has a chassis 8 with two electric motor-driven rigid wheels 9, 10 and two support wheels 11, 12 that can pivot freely about the vehicle's vertical axis.The chassis 8 is designed with four wheels and, due to the offset arrangement of the wheels 9, 10, 11, 12 in the transverse direction of the vehicle, has a total of four lanes. It goes without saying that the driverless spinning can 4 can also have a differently designed chassis 8, for example, with three lanes or with three wheels, six wheels, etc.

[0068] With reference to Figure 1, for example, the left ramp device 2 can serve as an entry ramp and the right ramp device 3 as an exit ramp for the spinning can 4. Likewise, the textile machine 1 could also have only one of the two ramp devices 2, 3, which could then serve as an entry and exit ramp, respectively. Although the textile machine 1 in the embodiment shown here is designed in a so-called above-ground variant, the textile machine 1 can also be designed in an underfloor variant, in which the base plate 7 is flush with the base 6 and accordingly no ramp devices 2, 3 are necessary.

[0069] The textile machine 1 has a depositing device 14, which can have a depositing plate that can be driven to rotate about a vertical axis 21. A sliver can support device 20 with a rotatably driven can plate 13 is arranged below the depositing device 14 to rotate the sliver can 4 about the vertical axis 21 during a filling process in which fiber sliver (not shown) produced by the textile machine 1 is deposited into the sliver can 4 via the depositing device 14.

[0070] To guide the driverless sliver can 4 toward the can turntable 13 and, after completion of the filling process, back down from the base plate 7, the textile machine 1 can have a guide arrangement 15 for contactless guidance of the sliver can 4. The guide arrangement 15 comprises, for example, magnetic tapes 16, 17, 18, which are arranged on the two ramp devices 2, 3 and the base plate 7. Furthermore, the guide arrangement 15 can comprise RFID tags with address information representing the attachment location of the tag. For example, an RFID tag 42 can be arranged on or at the can turntable 13, by means of which the driverless sliver can 4 can register its reaching the can turntable 13. When the sliver can 4 or a reader of the sliver can 4 reads the RFID tag 42, it recognizes that it is standing on the can turntable 13.By means of the guide arrangement 15, the spinning can 4 can, for example, drive up the left ramp device 2, which here serves as an access ramp, travel along a predetermined path 19 on the base plate 7 to the can turntable 13 and, after completion of the filling process, drive down the right ramp device 3, which here serves as an exit ramp, back to the ground 6, which is, for example, a hall floor.

[0071] The can turntable 13, which the spinning can 4 can move over, is embedded in a recess in the base plate 7 and is connected to a drive and braking system 22 for rotating the can turntable around the vertical axis 21 and for braking the can turntable 13. The drive and braking system 22 has a drive motor 23, for example an electric motor. In Figures 1 to 6, the can turntable 13 is in a loading rotational position, into which the drive and braking system 22 brakes the can turntable 13 in a defined manner, so that when stationary, the can turntable 13 is always aligned in the loading rotational position. Thus, after the rotation process, the spinning can 4 resumes the same direction of travel 41 as before the rotation process and can simply continue straight ahead towards the exit ramp 3.If the textile machine 1 has only one of the ramp devices 2, 3, depending on the application, it is also possible for the can plate 13 to assume a loading rotational position and an unloading rotational position rotated 180 degrees around the vertical axis 21, so that the spinning can 4 can always leave the can plate 13 moving forward. However, it is also fundamentally possible for the spinning can 4 to move forward onto the can plate 13 and back down again.

[0072] Looking at Figure 2, it can be seen that on a plate upper side 24 of the can plate 13 facing the depositing device 14, here two parking stop elements 25, 26 are formed for repeatable positioning of the spinning can 4 during loading and for securing the spinning can 4 when rotating about the vertical axis 21 in a defined loading position on the can plate 13. In the loading rotation position, the parking stop elements 25, 26 are thus arranged at a right angle to the travel path 19. The parking stop elements 25, 26 thus serve to center the respective mounted drive wheel 9, 10 of the spinning can 4 and to position it in the direction of travel 41. Figure 3 shows the spinning can 4 in the loading position, which designates the relative position of the spinning can 4 to the can plate 13 and is maintained throughout the entire filling process.Furthermore, passage troughs 27, 28 are formed in the top surface 24 of the plate for accommodating the free-running support wheels 11, 12 of the spinning can 4 in the loading position. The top surface 24 of the plate is flush with the top surface of the base plate 7. The parking stop elements 25, 26 and the passage troughs 27, 28 are formed as depressions in the can plate 13. In other words, the at least one parking stop element 25, 26 and the optional passage troughs 27, 28 are recessed relative to a plane defined by the top surface 24 of the plate.

[0073] In particular, Figure 4 shows that the parking stop elements 25, 26 are each designed as a transverse trough with a V-shaped profile. The profile walls 29, 30, which are arranged in a V-shape relative to one another, touch at a profile base which runs in a linear shape and defines a trough axis 31. The trough axes 31 of the two parking stop elements 25, 26 lie on a common straight line which extends parallel to a transverse axis 32 of the can plate 13. The transverse axis 32 runs parallel to the plate upper side 24 and perpendicular to the vertical axis 21. The two trough axes 31 are aligned perpendicular to a longitudinal axis 33 of the can plate 13, which is aligned parallel to the travel path 19 in the loading rotational position of the can plate 13. The parking stop elements 25, 26 are axially spaced from one another along the transverse axis 32 in order to be able to accommodate the drive wheels 9, 10 of the spinning can 4, which are spaced from one another in the vehicle's transverse axis.The design, in particular the distances between the parking stop elements 25, 26 and the passage troughs 27, 28, their sizes, geometry and number can be adapted to the spinning cans 4 used in the spinning mill.

[0074] The passage troughs 27, 28 are designed to allow the free-running wheels 11, 12 to pass through without requiring centering or positioning of the accommodated wheels. Specifically, the passage troughs 27, 28 have a trough bottom 34 aligned parallel to the top surface 24 of the plate and set back from the top surface 24. The trough bottoms 34 of the passage troughs 27, 28 and the trough axis 31 of the parking stop elements 25, 26 are at the same height or have the same distance from the top surface 24 of the plate. Along the longitudinal axis 33, inclined ramp sections 35, 36 adjoin the trough bottom 34 on both sides. Their length along the longitudinal axis 33 can be shorter than that of the V-shaped profile walls 29, 30.The primary purpose of the passage troughs 27, 28 is to lower the accommodated wheels 11, 12 in the loading position to the height level of the wheels 9, 10 accommodated in the parking stop elements 25, 26.

[0075] To simplify moving out of the parking stop elements 25, 26, the textile machine 1 can have a driven can feed with a can pusher 37 that can move the spinning can 4 along the travel path 19. The can pusher 37 can push an empty spinning can 4 waiting in a waiting position 38 in front of the can plate 13 against a filled spinning can 4 standing on the can plate 13 in order to push the filled spinning can 4 along the travel path 19 out of the parking stop elements 25, 26 - at least a short distance - towards the exit ramp 3. As soon as the filled spinning can 4 is no longer above the RFID tag 42, it can drive the drive wheels 9, 10 again and follow the magnetic belt 17 towards the exit ramp 3. The spinning can 4 to be filled, coming from the waiting position 38, can move independently into the loading position, or into the parking stop elements 25, 26 and the passage troughs 27, 28.It stops automatically as soon as its reader has detected the RFID tag 42. Once the can pusher 37 has returned to its initial position, shown in Figure 1, the next empty spinning can 4 coming over the ramp 2 can move to the waiting position 38.

[0076] In Figure 4, the can plate 13 is shown, by way of example, with four recesses, namely two of the parking stop elements 25, 26 and two of the passage troughs 27, 28, in order to be able to hold a four-wheeled spinning can 4 in the loading position. Figure 5 shows an alternative embodiment of the can plate 13, which has six recesses, namely two of the parking stop elements 25, 26 and four of the passage troughs 27, 28, 39, 40. The alternative can plate 13 can also be used to hold a four-wheeled spinning can 4 in the loading position, and is also suitable for a spinning can 4 with four, five, or six wheels.

[0077] Both the front passage troughs 27, 39, which are located along the travel path 19 in the direction of travel 41 of the spinning can 4 in front of the rear passage troughs 28, 40, and the rear passage troughs 28, 40 are designed here as spatially separated and spaced-apart passage troughs. However, it is also possible for the front passage troughs 27, 39 to be connected to one another in the form of a passage trough. This increases the flexibility of the can plate 13, which can thus accommodate spinning cans 4 with different wheel spacings between the free-running wheels, in particular, without the can plate 13 having to be replaced. In a similar manner, the rear passage troughs 28, 40 can be connected to one another in a trough-like manner.

[0078] The drive and braking system 22 is shown in detail in Figures 6 and 7. Individual components, such as the base plate 7 and the can plate 13, have been omitted solely to clarify the structure. Viewing the drive and braking system 22 from above, it can be seen that the sliver can carrying device 20 has a holding device 43 to which the can plate 13 is rotatably mounted about the vertical axis 21. The holding device 43, in turn, is fixed to a base body of the textile machine 1, for example the base plate 7, and can, as shown here, be fastened to a lower plate 44 which is set back from the base plate 7 and firmly connected to the base plate 7. A driven wheel 45 of a belt drive is arranged on the holding device 43 concentrically to the vertical axis 21 and is connected, in particular screwed, to the can plate 13. A drive wheel of the belt transmission sits on a motor shaft of the drive motor 23.Due to the view chosen in Figures 6 and 7, the drive wheel is visually obscured by the drive motor 23. A belt 46 driven by the drive wheel drives the driven wheel 45, particularly in a working direction of rotation 47. Due to the ratio between the diameter of the drive wheel and the diameter of the driven wheel 45, the drive speed of the drive motor 23 is reduced.

[0079] To ensure that the can plate 13 always remains stationary in the loading rotational position, the drive and braking system 22 includes a rotational position sensor system 48. The rotational position sensor system 48 includes, for example, two rotational position sensors 49, 50 that are fixed relative to the can plate 13 and can be attached to the lower plate 44 or the base plate 7. The rotational position sensors 49, 50 are configured to detect a position marking 51. The position marking 51 is designed, for example, as a cam that projects radially relative to the vertical axis 21 beyond a central outer circumference of the driven wheel 45. In the loading rotational position shown in Figure 6, the position marking 51 is on the first rotational position sensor 49. The second rotational position sensor 50, arranged in front of the first rotational position sensor 49 in the working rotational direction 47, defines a braking point of the can plate 13.This means that when the second rotational position sensor 50 detects the position marking 51, the drive and braking system 22 decelerates the can plate 13 and brings it to a standstill when the position marking 51 is aligned with the first rotational position sensor 49. The can plate 13 is then in the loading rotational position. The deceleration of the can plate 13 can be achieved, for example, by reducing the drive speed of the drive motor 23. A distance 52 in the circumferential direction around the vertical axis 21 can be adjustable to set a braking angle 66 of the can plate 13. In the simplest embodiment, an elongated hole 53 curved in the circumferential direction around the vertical axis 21 can be provided for this purpose, along which the second rotational position sensor 50 can be guided displaceably in the released state and can be held stationary in the fixed state.In this way, the second rotary position sensor 50 can be adjusted, for example, within an angular range of up to 20 degrees. Alternatively, multiple plug holes, bores, etc., can be provided to enable the second rotary position sensor 50 to be positioned at different distances. If no adjustment is required, the second rotary position sensor 50 can also be permanently connected to the base plate 44 or the base plate 7, in particular by means of screws, rivets, adhesive, or the like.

[0080] Furthermore, the textile machine 1 has a control unit 54 which is configured to control the drive and braking system 22 in such a way that the can plate 13 for loading and unloading the spinning can 4 is stationary or comes to a standstill in the loading rotational position.

[0081] For this purpose, the control unit 54 is signal-connected to the rotational position sensor system 48 and the drive motor 23. Furthermore, the control unit 54 can be signal-connected to a sliver sensor (not shown), which can be configured, for example, to measure the sliver length of the produced or deposited fiber sliver. Figure 9 shows an exemplary flow diagram for an automated filling process on the textile machine 1 with the self-propelled spinning can 4. With start 55, the can plate 13 is in the loading rotational position. To prevent the can plate 13 from floating around the loading rotational position when stationary, the drive and braking system 22 can comprise a parking brake (not shown) which temporarily fixes the can plate 13 in the loading rotational position, in particular for loading and unloading the spinning can 4.

[0082] In step 56, the self-propelled can travels along the magnetic belt 17 from the waiting position 38 onto the can plate 13 and rolls with the driven running wheels 9, 10 into the parking stop elements 25, 26. The free-running support wheels 11, 12 of the empty spinning can 4 roll into the passage troughs 27, 28. Held in the recesses 25, 26, 27, 28, the spinning can 4 is in the loading position. The spinning can 4, or rather the drive wheels 9, 10, are aligned in the direction of travel 41. The can pusher 37 can be used to support or alternatively push the empty spinning can 4 toward the can plate 13 and optionally onto the can plate 13 into the loading position.If at that time there is already a particularly filled spinning can 4 on the can plate 13, it is pushed out of the loading position and along the travel path 19 in the direction of the departure ramp 3 by the empty spinning can 4 pushed from the waiting position 38 towards the can plate 13 or by the self-propelled, empty spinning can 4.

[0083] The assumption of the loading position can be reported, for example, by the spinning can 4 to the control unit 54. For this purpose, the spinning can 4 can have an RFID tag reader that reads the RFID tag 42 and detects that the spinning can 4 is on the can plate 13 (step 57). The parking brake, if present, is now released.

[0084] The textile machine 1 then discharges the fiber sliver via the depositing device 14, and the control unit 54 controls the drive and braking system 22 to increase the drive speed of the drive motor 23 to a predetermined working speed in order to drive the can plate 13 in the working direction of rotation 47, step 58.

[0085] If the control unit 54 registers that a predetermined fill level has been reached or a manual input to terminate the filling process has been received, the control unit 54 can initiate the braking process, step 59. To do this, the control unit 54 waits until the second rotary position sensor 50 detects the passing of the position markings 51. The registration of the predetermined fill level can occur, for example, when the sliver sensor of the textile machine 1 has measured a predetermined sliver length of deposited or produced fiber sliver.

[0086] As soon as the second rotational position sensor 50 detects the position marking 51, the control unit 54 detects that the braking point has been reached and reduces the drive speed of the drive motor 23. This decelerates the can plate 13 and the spinning can 4 positioned on the can plate 13 in the loading position (step 60). The can plate 13 is thus moved to the defined loading rotational position at a rotational speed reduced compared to the specified operating speed.

[0087] As soon as the first rotational position sensor 49 detects the position marking 51, the drive speed of the drive motor 23 is reduced to 0 revolutions per minute to bring the can plate 13 to a standstill in the loading rotational position, step 61. The spinning can 4 is again precisely aligned in the direction of travel 41. The can plate 13 can now be re-locked by the parking brake.

[0088] If the control unit 54 registers or receives a notification of the next spinning can 4 to be filled at the waiting position 38 (step 62 "yes"), the next filling process is carried out in step 56. The waiting position 38 can, for example, be equipped with a sensor for can registration, or the spinning can 4 can report this to the control unit 54 upon reaching the waiting position 38. For example, the guide arrangement 15 can have another RFID tag 65 containing address information assigned to the waiting position 38 of the textile machine 1. If no other spinning can 4 is at the waiting position 38 (step 62 "no"), the filled spinning can 4, aligned in the direction of travel 41, can leave the can plate 13 under its own power, be pushed by the can pusher 37, or manually (step 63).

[0089] If there is no further spinning can 4 to be filled at the waiting position 38, the filling process is manually aborted by an operator of the textile machine 1, etc., the filling process ends, end 64.

[0090] Reference symbol

[0091] 1 textile machine 40 drive-through trough

[0092] 2 Ramp device 41 Direction of travel

[0093] 3 Ramp device 42 RFID tag

[0094] 4 Spinning can 43 Holding device

[0095] 5 Height difference 44 Base plate

[0096] 6 Subsurface 45 driven wheel

[0097] 7 base plate 46 belt

[0098] 8 Chassis 47 Working direction of rotation

[0099] 9 Impeller, especially rigid wheel 48 Rotational position sensor

[0100] 10 Impeller, especially rigid wheel 49 Rotational position sensor

[0101] 11 Running wheel, especially support wheel 50 Rotation position sensor

[0102] 12 Running wheel, especially support wheel 51 Position marking

[0103] 13 can plates 52 distance

[0104] 14 Storage device 53 Slot

[0105] 15 Control arrangement 54 Control unit

[0106] 16 Magnetic Tape 55 Start

[0107] 17 Magnetic tape 56 steps

[0108] 18 magnetic tape 57 step

[0109] 19 Track 58 Step

[0110] 20 Spinning can carrying device 59 Step

[0111] 21 Vertical axis 60 steps

[0112] 22 Drive and braking system 61 step

[0113] 23 Drive motor 62 steps

[0114] 24 Plate top 63 Step

[0115] 25 Parking stop element 64 End

[0116] 26 Parking stop element 65 RFID tag

[0117] 27 Passage trough 66 Braking angle

[0118] 28 drive-through trough

[0119] 29 Profile wall

[0120] 30 profile wall

[0121] 31 Trough axle

[0122] 32 Transverse axis

[0123] 33 Longitudinal axis

[0124] 34 Trough bottom

[0125] 35 Inclined ramp section

[0126] 36 Inclined ramp section

[0127] 37 can pushers

[0128] 38 Waiting position

[0129] 39 Drive-through trough

Claims

Patent claims 1. Spinning can carrying device (20) for rotating a spinning can (4), in particular a self-propelled spinning can, under a depositing device (14) of a textile machine (1), wherein the spinning can carrying device (20) has a holding device (43) that can be secured to a base body (7) of the textile machine (1), a can plate (13) that can be driven over by the spinning can (4), which can be rotated on the holding device (43) about a vertical axis (21), and a drive and braking system (22) for rotating the can plate (13) about the vertical axis (21) and braking the can plate (13), characterized in that for repeatable braking and holding of the can plate (13) in a defined loading rotational position, the drive and braking system (22) has a rotational position sensor system (48) that is configured to detect the defined loading rotational position of the can plate (13).

2. Spinning can carrying device (20) according to claim 1, characterized in that the rotational position sensor system (48) has a rotational position sensor (49) held stationary relative to the can plate (13) and at least one position marking (51) arranged on the can plate (13).

3. Spinning can carrying device (20) according to claim 2, characterized in that the at least one position marking (51) is a cam or a magnetic marking or an optical marking.

4. Spinning can carrying device (20) according to claim 2 or 3, characterized in that the rotational position sensor (49) is arranged such that the rotational position sensor (49) is aligned with the at least one position marking (51) in the loading rotational position.

5. Spinning can carrying device (20) according to claim 4, characterized in that the rotational position sensor system (48) has, in a working direction of rotation (47) of the can plate (13), a further rotational position sensor (50) for defining a braking point of the can plate (13) in front of the one rotational position sensor (49).

6. Spinning can carrying device (20) according to claim 5, characterized in that a distance (52) in the circumferential direction around the vertical axis (21) between the one rotational position sensor (49) and the further rotational position sensor (50) is adjustable for setting a braking angle (66) of the can plate (13).

7. Spinning can carrying device (20) according to one of claims 1 to 6, characterized in that the can plate (13) has at least one parking stop element (25, 26) on its plate upper side (24) facing away from the holding device (43) for repeatable positioning of the spinning can (4) during loading and for securing the spinning can (4) during rotation about the vertical axis (21) in a defined loading position on the can plate (13).

8. Spinning can carrying device (20) according to claim 7, characterized in that the at least one parking stop element (25, 26) for receiving a running wheel, in particular a drive wheel (9, 10) of the spinning can (4) is designed as a recess.

9. Spinning can carrying device (20) according to claim 7 or 8, characterized in that a profile of the at least one parking stop element (25, 26) is V-shaped.

10. Spinning can carrying device (20) according to one of claims 7 to 9, characterized in that the can plate (13) has exactly two of the parking stop elements (25, 26).

11. Spinning can carrying device (20) according to one of claims 7 to 10, characterized in that the can plate (13) has passage troughs (27, 28; 39, 40) on the plate upper side (24) for receiving further, in particular free-running, wheels (11, 12) of the spinning can (4).

12. Textile machine (1) with a sliver can carrying device (20) and a control unit (54) which is configured to control the sliver can carrying device (20), characterized in that the sliver can carrying device (20) is designed according to one of claims 1 to 11.

13. Textile machine (1) according to claim 12, characterized in that the textile machine (1) has a base plate (7) over which the spinning can (4) can travel and which defines a travel path (19) for the spinning can (4), into which base plate the can plate (13) is embedded, wherein the control unit (54) is configured to control the drive and braking system (22) such that the can plate (13) for loading and unloading the spinning can (4) is stationary or comes to a standstill in the at least one loading rotational position, wherein the at least one parking stop element (25, 26) is arranged at a right angle to the travel path (19) in the loading rotational position.

14. Textile machine (1) according to claim 13, characterized in that a can pusher (37) is provided for pushing the spinning can (4) or several of the spinning cans (4) along the travel path (19).

15. A method for filling a particularly self-propelled spinning can (4) on a textile machine (1) according to one of claims 12 to 14, wherein the method comprises the following steps: Holding (55) the can plate (13) in the at least one loading rotation position; Loading (56) the spinning can (4) onto the can plate (13), in particular wherein the spinning can (4) is positioned and secured on the can plate (13) in the loading position by means of the at least one parking stop element (25, 26); Filling (58) the spinning can (4) with fiber sliver delivered by the textile machine (1), while the drive and braking system (22) drives the can plate (13) to rotate about the vertical axis (21); Initiating (59) a braking process of the can plate (13) by the control unit (54), Braking (60) of the can plate (13); Holding (61) the can plate (13) in the at least one loading rotational position when the rotational position sensor detects the at least one loading rotational position; and Unloading (56; 63) the spinning can (4) from the can plate (13).

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