Ramp device for a textile machine and textile machine

Abstract

The present invention relates to a ramp device (2; 3) for a textile machine (1) to be set up on a base (6) for overcoming a height difference (5) between the base (6) and a can storage area (40) of the textile machine (1) that is raised above the base (6), wherein the ramp device (2; 3) has a support structure (19) to be set up on the base (6) and defining a setup level (E), characterized in that the ramp device (2; 3) has a top surface (43) arranged on the support structure (19) which can be traversed by a driverless transported spinning can (4) and has two spaced-apart outer driving surfaces (20, 21) and at least one inner driving surface (22, 23) between them, wherein in a longitudinal direction (X) of the ramp the at least one inner driving surface (22, 23) is inclined more steeply at least sectionally relative to the setup level (E) than the respective outer driving surface (20, 21).Furthermore, the present invention relates to a textile machine (1) with at least one such ramp device (2, 3).

Description

[0001] The present invention relates to a ramp device for a textile machine that can be installed on a base for overcoming a height difference between the base and a can storage location of the textile machine that is elevated relative to the base. The ramp device comprises a support structure that can be installed on the base and defines a support plane. Furthermore, the present invention relates to a textile machine with such a ramp device.

[0002] In spinning mills, sliver cans, also called sliver cans or cans for short, are used to transport slivers between textile machines, where the slivers are deposited into empty sliver cans or removed from full sliver cans for further processing of the delivered slivers. To date, sliver cans have predominantly been moved between textile machines by hand. Various ramp devices are known for making it easier to move the cans into and out of the raised can storage area of ​​the textile machine. EP 3 165 635 B1 and EP 3 986 819 A1 each disclose a ramp device for a can pusher on a draw frame having an inclined plate with folded side walls. EP 3 331 791 B1 discloses another ramp device that is attached to the base plate of a can changer and is designed for jumbo cans with a diameter of 1200 millimeters.

[0003] Efforts to automate the labor-intensive transport of spinning cans have been underway for several decades. However, the automated handling of cans on a so-called overhead textile machine, which has a raised can storage area, remains a challenge.

[0004] DE 36 21 370 A1 discloses an automatically controlled transport carriage with a loading and unloading device for the spinning can. The transport carriage has a roller conveyor on which the spinning can is carried over the ground during transport. For unloading, the transport carriage moves up to the elevated filling station of the textile machine and moves the spinning can to the filling station using drivable rollers of the roller conveyor. However, a disadvantage of such transport carriages is that they are very expensive both to purchase and to operate.

[0005] The object of the present invention is to provide means that simplify the automatic handling of sliver cans on an above-floor textile machine. Furthermore, the object of the present invention is to provide an above-floor textile machine that enables automatic handling of the sliver cans in a simple and cost-effective manner.

[0006] The object is achieved by a ramp device of the type mentioned at the outset in that the ramp device has an upper side which is arranged on the support structure and can be driven over by a driverless sliver can and has two spaced-apart outer driving surfaces and at least one inner driving surface therebetween, wherein in a longitudinal direction of the ramp the at least one inner driving surface is at least partially inclined with respect to the installation plane than the respective outer driving surface.

[0007] An advantage is that the differently inclined driving surfaces of the accessible upper side prevent the driverless can from tipping over when driving over the ramp device. This allows the driverless can to drive over the ramp device independently in order to enter and exit the elevated can storage area. The ramp device eliminates the time-consuming process of unloading and loading the can from a driverless vehicle on the textile machine, as the ramp device is now designed so that the can can drive over the ramp device as a whole, i.e. together with its own drive system or a temporarily assigned driverless transport vehicle, AGV (automated guided vehicle), or the like.Regardless of whether the spinning can has its own drive, for example in the form of a permanently assigned AGV, or is transported by means of an automated guided vehicle, AGV or the like, this unit is referred to as a “driverless transported spinning can” in relation to the present invention.

[0008] For the sake of readability, "the at least one inner driving surface" will be referred to as "the inner driving surface," whereby this still refers to exactly one of the inner driving surfaces or several of the inner driving surfaces. Where the exact number is important, this will be indicated at the appropriate point.

[0009] Spatial terms such as "top," "bottom," "above," and "below," if used, are intended solely to describe the relative arrangement of the relevant components. These terms refer to the ramp device when it is positioned on the ground to overcome the height difference ("positioned position"). The top side can be located on a side of the support structure facing away from the installation plane.

[0010] The inclination in the longitudinal direction of the ramp can also be referred to as the longitudinal inclination. The longitudinal direction of the ramp can extend in the direction in which the ramp device can be driven over by the driverless spinning can. The inclination of the respective reference surface can be determined by specifying an associated angle of inclination. In particular, the respective angle of inclination indicates the inclination of the respective reference surface in the longitudinal direction of the ramp in relation to the installation plane. Depending on the inclination or angle of inclination specified, the respective reference surface is the respective outer driving surface or the inner driving surface, or even just individual sections thereof.

[0011] When erected, the installation plane can be aligned parallel to the ground or horizontally and can rest on the ground. Preferably, the outer running surfaces are equally inclined to one another and, in particular, also have the same design. Preferably, the inner running surfaces are equally inclined to one another and, in particular, also have the same design.

[0012] The ramp device can have at least three ramp sections in the longitudinal direction of the ramp, namely a lower ramp section, a middle ramp section, and an upper ramp section. The drivable upper surface expediently extends over the ramp sections.

[0013] A first angle of inclination between the inner running surface in the middle ramp section and the installation level can be greater than a second angle of inclination between the respective outer running surface in the middle ramp section and the installation level. This allows the height of the inner running surface in the middle ramp section to change more quickly than the height of the outer running surfaces. This allows the overall extension of the ramp device along the ramp's longitudinal direction to be kept as small as possible.

[0014] The inclination of the inner driving surface in the central ramp section, or the corresponding first angle of inclination, can be constant. This simplifies the manufacture of the ramp device. Alternatively, the inner driving surface of the central ramp section can have a curved profile. For example, the inner driving surface of the central ramp section can have an S-shaped curve.

[0015] The inner running surface of the lower ramp section can run parallel to the installation plane, or the incline of the inner running surface of the lower ramp section can be zero. Furthermore, the second angle of inclination between the respective outer running surface of the lower ramp section and the installation plane can be greater than zero degrees. Due to the differently inclined running surfaces, the ramp device is particularly well suited to be used by three-wheeled, four-wheeled, or more than four-wheeled driverless sliver cans, since their centrally arranged running wheels, in particular support wheels, can roll over the inner running surface. Because the inner running surface in the lower ramp section can run parallel to the installation plane, the starting line at which the inner running surface transitions into the incline is set back from the starting line of the two outer running surfaces, which are already inclined in the lower ramp section.This facilitates the transition of the driverless sliver can from the ground to the ramp device, and vice versa, thereby reducing the spring travel of the sprung support wheels of the driverless sliver cans and enabling the provision of an overall shorter ramp device.

[0016] The inner driving surface of the lower ramp section can comprise at least one flat, drivable plate, which can be attached to the support structure. This increases the stability of the ramp device. To reduce the dead weight of the ramp device and potentially make it more cost-effective to manufacture, the inner driving surface of the lower ramp section can also be formed by the subsurface, which is therefore only available when the ramp is in its erected state.

[0017] Furthermore, in the longitudinal direction of the ramp, the inner driving surface in the upper ramp section can be less inclined relative to the installation plane than the respective outer driving surface in the upper ramp section. In other words, the inclination of the inner driving surface of the upper ramp section can be less than the inclination of the outer driving surface in the upper ramp section. This increases the stability of the driverless sliver can when driving up and down and thus prevents it from tipping. Furthermore, the inclination of the inner driving surface of the upper ramp section can be more shallow than the inclination in the middle ramp section. For example, an angle of inclination between the inner driving surface in the upper ramp section and the installation plane can be zero degrees. In particular, the inner driving surface of the upper ramp section is aligned parallel to the installation plane of the ramp device.The inner running surface in the upper ramp section can thus determine the height level that the outer running surfaces reach at the end of the upper ramp section facing the textile machine. As an alternative to the horizontal alignment, the inner running surface in the upper ramp section can be inclined at a slight incline, in particular a maximum of 2 degrees. It is advantageous if the incline of the inner running surface in the upper ramp section is smaller than the incline of the outer running surfaces in the upper ramp section.

[0018] According to one embodiment, the respective outer driving surface has a constant incline across the ramp sections. This improves the drivability of the ramp device and reduces the manufacturing costs for the ramp device. The inner driving surface preferably has a constant incline in the respective ramp section, for example, zero degrees in the lower and upper ramp sections and, for example, a constant incline in the middle ramp section with an inclination angle in the range of 0.5 degrees to 7 degrees. For example, the middle ramp section can also have a curved profile instead of the constant incline.

[0019] According to an alternative embodiment, the outer driving surfaces have a curved profile across the ramp sections. For example, the outer driving surfaces can have an S-shaped curve. This also improves the accessibility of the ramp device. The inner driving surface preferably also has the same curved profile in the middle ramp section, although a constant incline is also possible in principle.

[0020] Furthermore, the ramp device can have a connecting section for connecting the ramp device to a stationary component of the textile machine. This allows the ramp device to be easily attached to the textile machine as a rigid or stationary ramp. To facilitate the transition of the driverless sliver can from the elevated can storage location to the ramp device, and vice versa, the inclination of the outer travel surfaces and the inclination of the inner travel surface of the connecting section can be equal to zero degrees relative to the installation plane of the ramp device. Thus, the ramp device is only inclined in the ramp sections in particular.

[0021] Furthermore, the inner running surface can be arranged to adjoin the adjacent outer running surfaces. This prevents gaps or crevices between the running surfaces in plan view, into which the wheels of the driverless spinning can could accidentally drive. To close any gaps that may arise due to possible height differences between the inner and outer running surfaces, side plates can be provided, which can be arranged on the support structure or enclosed by it.

[0022] The support structure can be constructed in multiple parts or in one piece. The support structure can include columns, beams, etc. The accessible upper surface of the ramp device can be formed by plates, metal profiles, rails, etc. The components of the ramp device and / or the support structure can be made of metal or another inherently stable and resilient material.

[0023] The ramp device is particularly suitable for driverless sliver cans that are designed with multiple tracks. For example, the ramp device has a separate running surface for each track of the driverless sliver can. Thus, the ramp device, for example, the width of the respective running surface, the distance between the running surfaces, the inclination of the respective running surfaces, etc., can be adapted to the arrangement of the running wheels, their distance in the vehicle's longitudinal and / or transverse direction, etc. In this way, the driverless sliver cans used in the spinning mill can be taken into account when designing and dimensioning the ramp device. For example, the ramp device can be configured so that the driverless sliver can rolls with its driven wheels over the two outer running surfaces and with at least one non-driven support wheel over the inner running surface.

[0024] Preferably, the outer driving surfaces are of equal length and / or width. The ramp device can serve as an entry ramp and / or exit ramp. Due to the inclined driving surfaces, the ramp device can also be referred to as an inclined ramp device. In particular, the driving surfaces of the ramp device extend in the longitudinal direction of the ramp. Thus, the ramp device can also be referred to as a straight ramp device or a straight inclined ramp device.

[0025] The total length of the ramp device can be between 500 millimeters and 2000 millimeters. Preferably, the total length is between 750 millimeters and 1250 millimeters. The lower ramp section and / or the upper ramp section can expediently be between 50 millimeters and 300 millimeters. In a further advantageous embodiment, the length of the lower ramp section and / or the upper ramp section can be between 100 millimeters and 200 millimeters. The upper ramp section can be at least approximately the same length as the lower ramp section.

[0026] Furthermore, the ramp device can be provided with at least one guide element for contactlessly guiding the driverless sliver can in the longitudinal direction of the ramp. In particular, the at least one guide element comprises a magnetic tape. The magnetic tape can be arranged on or at the inner travel surface. Other positions are also possible. This creates a guidance option that can be implemented inexpensively, in which a driverless sliver can equipped with a magnetic tape reading device can follow the course or path specified by the magnetic tape. Other or hybrid guidance systems are also conceivable, for example, optical tape tracking, inductive track guidance, etc.

[0027] A further solution to the above-mentioned problem consists in a textile machine that can be set up or is set up on the ground, wherein the textile machine has a can support space that is raised relative to the ground and at least one of the ramp devices described above. The textile machine according to the invention results in the same advantages as those described in connection with the ramp 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 configurations of the ramp device are transferable to the textile machine and vice versa.

[0028] The textile machine can have a base plate that encloses the raised can storage space. The can storage space can include a filling station for filling the driverlessly transported spinning can. The textile machine can have a depositing device at the filling station for depositing the fiber sliver into the spinning can. A can turntable, which defines the filling station, can be integrated into the base plate. Positioned on the can turntable, the driverlessly transported spinning can can be rotated in a conventional manner below the depositing device, in particular a deposit plate, during the filling process.

[0029] According to one embodiment, the textile machine has only one ramp device. The ramp device then serves as an entry and exit ramp. According to an alternative embodiment, the textile machine has exactly two of the ramp devices, so that a first of the two ramp devices is arranged as an entry ramp in front of the raised can storage area, and a second of the two ramp devices is arranged as an exit ramp behind the raised can storage area. The two ramp devices can, for example, be aligned as an extension of, parallel to, or at right angles to each other.

[0030] Furthermore, it can be provided that the textile machine has a guidance arrangement for the contactless guidance of the driverlessly transported spinning can over the at least one ramp device and up to the raised can storage location or the base plate. The guidance arrangement can have the guidance element on the respective ramp device and guidance elements on the raised can storage location or the base plate, which can comprise, for example, magnetic tapes. Furthermore, the guidance arrangement can comprise an RFID tag arranged at the can storage location, in particular the can turntable. "Radio Frequency Identification" technology - RFID for short - enables the contactless transmission of data stored on the RFID tags or transponders. Address information, for example, can be stored on the RFID tag so that the control unit of the driverlessly transported spinning can detects when the address point, in this case the can storage location of a defined textile machine, has been reached.

[0031] The contactless guidance of the driverless transported spinning can is not only feasible for the textile machine in the so-called above-floor variant with the raised can storage space, but can also be provided for a textile machine in the so-called underfloor variant, in which the can storage space is arranged without any difference in height to the ground.

[0032] The textile machine can be, for example, a spinning preparation machine, in particular a draw frame, a combing machine, a carding machine, a can changer or the like.

[0033] Preferred embodiments are explained below with reference to the drawing figures. Herein: Fig. 1 a perspective view of a textile machine according to an embodiment of the present invention with ramp devices according to the invention; Fig. 2 a perspective view of the ramp device according to the invention from Fig. 1; Fig. 3 a side view of the ramp device according to Fig. 2; Fig. 4 a sectional view through the ramp device according to section line IV-IV in Fig. 2; Fig. 5 a sectional view through the ramp device according to section line VV in Fig. 2; Fig. 6 a schematic side view of the ramp device according to Fig. 2; Fig. 7 is a schematic side view of a ramp device according to the invention according to a further embodiment; and Fig. 8 A driverless spinning can in bottom view, following a magnetic belt.

[0034] In the Fig. 1 shows a textile machine 1 according to an embodiment of the present invention with two ramp devices 2, 3 according to the invention. By means of the ramp devices 2, 3, driverless transported spinning cans 4 can overcome a height difference 5 between a base 6 on which the textile machine 1 is installed and an elevated can storage location 40 of the textile machine 1. For example, the Fig. 1. The left ramp device 2 serves as an entry ramp, and the right ramp device 3 serves as an exit ramp. Likewise, the textile machine 1 could also have only one of the two ramp devices, which could then serve as an entry and exit ramp, respectively.

[0035] The textile machine 1 has a drivable base plate 7, the upper side of which is raised by the height difference 5 relative to the ground surface 6 and encloses the can parking space 40. A can turntable 13 is embedded in the base plate 7, defining the can parking space 40, which can also be referred to here as the filling space, of the spinning can 4. Above the can turntable 13, the textile machine 1 has a depositing device 14 for filling the driverlessly transported spinning can 4 with fiber sliver. To guide the driverlessly transported spinning can 4 toward the can turntable 13 and away from it, the textile machine 1 can have a guide arrangement 15 for contactless guidance of the driverlessly transported spinning 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 guidance system 15 can have an RFID tag 42 arranged on the can turntable 13, by means of which the driverless transported spinning can 4 can register its reaching the can turntable 13. By means of the guidance system 15, the driverless transported spinning can 4 can, for example, drive up the left ramp device 2, which here serves as an access ramp, travel on the floor plate 7 to the can turntable 13, and then 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.

[0036] An exemplary design of the driverless sliver can 4 is shown in the Fig. 8, which shows its bottom view. Such a driverless sliver 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 to which reference is hereby made in its entirety. Fig. 8, the driverless sliver 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 around 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 sliver can 4 can also have a differently designed chassis 8, for example, with three lanes or a three-wheeled design.

[0037] The ramp devices 2, 3 are of identical construction. The structure of the ramp devices 2, 3 is described below with reference to the Fig. 2 to 6 are described by way of example using the ramp device 2, wherein the explanations apply equally to the ramp device 3.

[0038] The ramp device 2 extends along a ramp longitudinal direction X, a ramp transverse direction Y and a ramp vertical direction Z. The ramp device 2 has a support structure 19 which can be erected on the ground 6 and defines an installation plane E. In the erected state, which in the Fig. 1, the ramp device 2 is supported on the ground 6 so that the installation plane E is aligned parallel to the ground 6.

[0039] On the side of the support structure 19 facing away from the installation level E, two spaced apart outer driving surfaces 20, 21 and two inner driving surfaces 22, 23 are arranged on a drivable upper side 43 of the ramp device 2. In the Fig. In the embodiment of the driverless transported spinning can 4 shown as an example in Figure 8, when traveling along the ramp device 2, it travels with the two rigid wheels 9, 10 over the two outer driving surfaces 20, 21 and with the two support wheels 11, 12 over the two inner driving surfaces 22, 23. The magnetic tape 16 extends parallel to the ramp longitudinal direction X and is arranged between the two inner driving surfaces 22, 23.

[0040] The ramp device 2 has a connecting section 27 for connecting the ramp device 2 to the textile machine 1, for example a frame or the base plate 7. The running surfaces 20, 21, 22, 23 in the connecting section 27 are aligned parallel to the base plate 7 or parallel to the installation plane E. The connecting section 27 can, for example, rest on the base plate 7, as shown in the Fig. 1, or be flush with it, be inserted into recesses in the base plate 7 or the like.

[0041] Furthermore, the ramp device 2 has three ramp sections along the ramp longitudinal direction X, in which the drivable upper side 43 is inclined at least in some areas. The ramp sections comprise a lower ramp section 24, a middle ramp section 25, and an upper ramp section 26. The upper ramp section 26 directly adjoins the connecting section 27. The middle ramp section 25 can, as shown here, be the longest of the three ramp sections 24, 25, 26.

[0042] The outer driving surfaces 20, 21 have a constant inclination over the three ramp sections 24, 25, 26, as can be seen particularly in the schematic representation according to the Fig. 6. A second angle of inclination 28, which determines the inclination, between the respective outer running surface 20, 21 and the installation plane E is, for example, 2.5 degrees. The two outer running surfaces 20, 21 are equally inclined, so that the second angle of inclination 28 applies to the two outer running surfaces 20, 21. A larger or smaller second angle of inclination 28 is also possible, which can generally be in a range from 0.5 degrees to 7 degrees and preferably amounts to a maximum of 5 degrees. In principle, however, it is also possible for the outer running surfaces 20, 21 to have a curved profile over the ramp sections 24, 25, 26. For example, the outer running surfaces can have an S-shaped curved profile, as in the schematic representation according to the Fig. 7 is shown.

[0043] The upper side 43 of the lower ramp section 24 is recessed, here for reasons of weight savings, so that when the ramp device 2 is erected, the inner driving surfaces 22, 23 in a roadway section 48 are formed or replaced by the substructure 6. It is fundamentally possible, and for easier assembly, sometimes advantageous, for the upper side 43 to also cover the roadway section 48 and accordingly form the inner driving surfaces of the lower ramp section 24. What both options have in common is that the inner driving surfaces of the lower ramp section 23 are aligned horizontally and accordingly not inclined.

[0044] Especially in the Fig. 2 and Fig. 6 it is clearly visible that, starting from the ground 6, the inclination of the inner running surfaces 22, 23 only begins from a starting line 45, which is set back in the ramp longitudinal direction X compared to a starting line 44, from which the outer running surfaces 45 are already inclined. It is advantageous if the distance between the two starting lines 44, 45, i.e. the length of the lower ramp section 24, corresponds at least approximately to the distance 41 between the front support wheel 11 and the axis of rotation of the two rigid wheels 9, 10, see the Fig. 8. In this way, the driverless transported spinning can 4 only transitions with the support wheels 11, 12 into the slope of the inner running surfaces 22, 23 of the middle ramp section 25 when the rigid wheels 9, 10 reach the inclined lower ramp section 24.

[0045] The inner driving surfaces 22, 23 have a constant inclination in the middle ramp section 25, as can be seen particularly in the schematic representation according to the Fig. 6. A first angle of inclination 29, which determines the inclination, between the respective inner running surface 22, 23 and the installation plane E is, for example, 3.5 degrees. The two inner running surfaces 22, 23 are equally inclined, so that the first angle of inclination 29 applies to the two inner running surfaces 22, 23. A larger or smaller first angle of inclination 29 is also possible, which can generally be in a range from 0.5 degrees to 7 degrees and preferably amounts to a maximum of 6 degrees. Preferably, the first angle of inclination 29 of the inner running surfaces 22, 23 is always greater than the second angle of inclination 28 of the outer running surfaces 20, 21. In principle, however, it is also possible for the inner running surfaces 22, 23 to have a curved profile in the central ramp section 25. For example, the outer running surfaces can have an S-shaped curved profile, as in the schematic representation according to the Fig. 7 is shown.

[0046] In the upper ramp section 26, the inclination of the inner running surfaces 22, 23 is zero degrees, i.e., the inner running surfaces 22, 23 run in a height plane H parallel to the installation plane E and, in the erected state shown here, also parallel to the base plate 7. The inner running surfaces 22, 23 thus merge flush into the connecting section 27. Thus, the inner running surfaces 22, 23 already reach the final height level at a final line 46 in order to bridge the height difference 5.

[0047] The outer running surfaces 20, 21 are still inclined up to the connecting section 27 and only transition to a horizontal alignment at a connecting line 47 offset from the end line 46. In the connecting section 27, the inner running surfaces 22, 23 and the outer running surfaces 20, 21 are at the height level H.

[0048] Instead of angled transitions between the ramp sections 24, 25, 26, the subsurface 6 or the connecting section 27, rounded transitions can also be provided.

[0049] A groove-like recess is formed between the inner running surfaces 22, 23, for example, by means of a U-profile 30 attached from below. The magnetic tape 16 is inserted into the recess. The magnetic tape 18 arranged on the base plate 7 of the textile machine 1 can also be inserted into a similarly designed recess or glued to the base plate 7.

[0050] Among other things in the Fig. 5 it can be seen that the ramp device 2 can be made of several individual ramp parts 31, 32, 33. The Fig.The ramp section 31 shown on the left in Figure 5 comprises the left outer running surface 20, which is supported on side plates 34, 35 of the support structure 19. The middle ramp section 32 comprises the two inner running surfaces 22, 23, which are connected to one another by means of the U-profile 30 and supported on side plates 36, 37 of the support structure 19. The right ramp section 33 comprises the right outer running surface 21, which is supported on side plates 38, 39 of the support structure 19. The ramp sections 31, 32, 33 can be firmly connected to one another, for example, screwed, riveted, welded, or the like. Reference symbol 1 textile machine 2 ramp device 3 Ramp device 4 spinning can 5 Difference in altitude 6 Underground 7 Base plate 8 Chassis 9 rigid wheel 10 rigid wheel 11 Support wheel 12 support wheel 13 can turntables 14 Storage device 15 Guidance arrangement 16 magnetic tape 17 magnetic tape 18 magnetic tape 19 Support structure 20 Driving surface 21 Driving surface 22 Driving surface 23 Driving surface 24 Ramp section 25 Ramp section 26 Ramp section 27 connecting section 28 tilt angles 29 tilt angles 30 recess or U-profile 31 Ramp section 32 Ramp section 33 Ramp section 34 side panel 35 side panel 36 side panel 37 side panel 38 side panel 39 side panel 40 pitchers 41 distance 42 RFID tags 43 Top 44 Starting line 45 Starting line 46 final line 47 Final line 48 road section E Installation level H altitude level X Ramp longitudinal direction Y ramp transverse direction Z Ramp elevation direction QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3 165 635 B1

[0002] EP 3 986 819 A1

[0002] EP 3 331 791 B1

[0002] DE 36 21 370 A1

[0004]

Claims

[1] Ramp device (2; 3) for a textile machine (1) which can be set up on a base (6) for overcoming a height difference (5) between the base (6) and a can storage location (40) of the textile machine (1) which is raised relative to the base (6), wherein the ramp device (2; 3) has a support structure (19) which can be set up on the base (6) and defines a mounting plane (E), characterized by in that the ramp device (2; 3) has an upper side (43) which is arranged on the support structure (19) and can be driven over by a driverless sliver can (4), said upper side having two spaced-apart outer driving surfaces (20, 21) and at least one inner driving surface (22, 23) therebetween, wherein in a longitudinal direction (X) of the ramp the at least one inner driving surface (22, 23) is at least partially inclined relative to the installation plane (E) more than the respective outer driving surface (20, 21). [2] Ramp device (2; 3) according to claim 1, characterized bythat the ramp device (2; 3) has at least three ramp sections (24, 25, 26) in the ramp longitudinal direction (X), namely a lower ramp section (24), a middle ramp section (25) and an upper ramp section (26). [3] Ramp device (2; 3) according to claim 2, characterized by that a first angle of inclination (29) between the at least one inner driving surface (22, 23) of the middle ramp section (24) and the installation plane (E) is greater than a second angle of inclination (28) between the respective outer driving surface (20, 21) of the middle ramp section (24) and the installation plane (E). [4] Ramp device (2; 3) according to claim 3, characterized bythat the at least one inner driving surface (22, 23) in the lower ramp section (24) runs parallel to the installation plane (E), and that the second angle of inclination (28) between the respective outer driving surface (22, 23) in the lower ramp section (24) and the installation plane (E) is greater than zero degrees. [5] Ramp device (2; 3) according to one of claims 2 to 4, characterized by that the at least one inner driving surface (22, 23) in the middle ramp section (24) is constantly inclined. [6] Ramp device (2; 3) according to one of claims 2 to 4, characterized by that in the ramp longitudinal direction (X) the at least one inner driving surface (22, 23) of the central ramp section (24) has a curved course. [7] Ramp device (2; 3) according to one of claims 2 to 6, characterized bythat in the ramp longitudinal direction (X) the at least one inner driving surface (22, 23) in the upper ramp section (26) is less inclined relative to the installation plane (E) than the respective outer driving surface (20, 21) in the upper ramp section (26). [8] Ramp device (2; 3) according to claim 7, characterized by that the at least one inner driving surface (22, 23) in the upper ramp section (26) runs parallel to the installation plane (E). [9] Ramp device (2; 3) according to one of claims 2 to 8, characterized by that the respective outer driving surface (20, 21) is constantly inclined over the ramp sections (24, 25, 26). [10] Ramp device (2; 3) according to one of claims 2 to 8, characterized by that the respective outer driving surfaces (20, 21) have a curved course over the ramp sections (24, 25, 26). [11] Ramp device (2; 3) according to one of claims 1 to 10, characterized bythat the ramp device (2; 3) has a guide element (16; 17) for contactless guiding of the driverless transported spinning can (4) in the ramp longitudinal direction (X) over the ramp device (2; 3). [12] Textile machine (1) which can be set up on a base (6), wherein the textile machine (1) has a can storage space (40) which is raised relative to the base (6) and at least one ramp device (2, 3), characterized by that the ramp device (2, 3) is designed according to one of claims 1 to 11. [13] Textile machine (1) according to claim 12, characterized by that the textile machine (1) has two of the ramp devices (2, 3), wherein a first of the two ramp devices (2) serves as an entry ramp and a second of the two ramp devices (3) serves as an exit ramp. [14] Textile machine (1) according to claim 12 or 13, characterized bythat the textile machine (1) has a guide arrangement (15) for contactless guidance of the driverless transported spinning can (4) over the at least one ramp device (2, 3) and up to the raised can storage location (40). [15] Textile machine (1) according to claim 14, characterized by that the guide arrangement (15) comprises an RFID tag (42) arranged at the can placement location (40).

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