Magazine for top rollers, and grinding machine

Abstract

The invention relates to a magazine (7) for providing a plurality of top rollers (1) to fiber-processing machines, wherein the magazine (7) has a plurality of rail pairs (14) which are arranged one over the other vertically, a separator (8), and a vertical conveyor (10), and the separator (8) is located between the rail pairs (14) and the vertical conveyor (10). Each rail pair (14) is positioned at an incline (15) relative to the separator (8), and a vertical mobility (9) of the separator (8) is provided. The invention additionally relates to a grinding machine (46) comprising such a magazine (7).

Description

[0001] Magazine for top rollers and grinding machine

[0002] The invention relates to a magazine for providing a plurality of top rollers of fiber processing machines for a grinding machine.

[0003] Various designs of magazines for grinding machines for grinding spinning cylinders are known from the state of the art. The magazines serve as supply magazines for storing and supplying the grinding machine with spinning cylinders to be ground. Spinning cylinders are usually mounted in pairs, rotatable on an axle pin to a top roller. In various fiber processing machines such as draw frames, roving frames, ring spinning machines, or air-jet spinning machines, drafting systems are used to draw fiber slivers. The drafting systems consist of several pairs of rollers arranged one behind the other and operated at different speeds. The fiber sliver passing between the pairs of rollers is subjected to drafting. The roller pairs consist of a bottom roller and a top roller, with the bottom roller usually being a steel roller and the top roller equipped with spinning cylinders that have an elastic covering.During operation, the cover is worn by the passing fiber slivers, causing the cover to lose its cylindrical shape and fail to function properly with the associated bottom roller. Therefore, the spinning cylinders, or rather their covers, must be ground periodically. During this grinding process, the top layer of the cover is removed and the cover's original, for example, cylindrical shape is restored. The shape and size of the spinning cylinders, or top rollers, vary depending on the type of fiber-processing machine in which they are used. Not only the diameters of the spinning cylinders vary, but also their spacing on the axle pin.

[0004] It is known to use feed magazines and storage magazines in grinding machines so that the spinning cylinders to be ground do not have to be manually transported to the grinding machine one by one. Various types of magazines are used, for example round magazines with a large number of guides arranged radially to a rotation center or rectangular magazines with a large number of guides stacked on top of one another and connected at their ends or even tiered magazines. The greatest storage capacities in a small space are achieved with tiered magazines. WO 2018 / 047196 A1, for example, discloses a tiered magazine. In order to transport the top rollers stored in a large number of tiers to the grinding machine, a corresponding conveyor device is provided. The conveyor device removes one top roller at a time from a specific tier and transports it to the grinding machine.The disadvantage of this design, however, is that the delivery rate is determined by the time the conveyor system takes from the removal of a top roll from a stack to its delivery to the grinding machine. To increase the delivery rate, the conveyor speed must therefore be increased.

[0005] The object of the invention is therefore to propose a magazine for top rollers which has a high capacity for storing top rollers and a high delivery performance, while enabling gentle transport of the top rollers to the grinding machine.

[0006] The problem is solved by a magazine with the features of the independent claim. To solve the problem, a magazine for providing a plurality of top rollers of fiber processing machines is proposed, wherein the magazine has a plurality of rail pairs arranged vertically one above the other and a separator and a vertical conveyor, and the separator is arranged between the rail pairs and the vertical conveyor. The spacing between the rails forming a rail pair is arranged such that the top rollers come to rest with their axle bolts on the rail pair. By splitting the tasks of vertically conveying the top rollers and removing the top rollers from a level between two separate mechanical components, the design is simplified and the conveyor capacity can be increased without having to increase the conveyor speed.The separator removes the top rollers individually from a specific level and transfers them to the vertical conveyor. This enables controlled and precise removal of top rollers and their transfer to the vertical conveyor, thus ensuring, among other things, optimal and trouble-free operation of the vertical conveyor. This is particularly advantageous for operating endless chain conveyors in certain embodiments of magazines according to the invention in a simple, cost-effective, and particularly energy-efficient manner.

[0007] The rail pairs are each arranged at an incline towards the separator and vertical movement of the separator is provided. The incline of the rail pairs towards the separator ensures that, regardless of the fill level of a level, the top rollers located therein are always located on the end of the respective rail pair facing the separator. The magazine is designed in such a way that the ends of the rail pairs of the individual levels facing away from the separator are freely accessible, so that individual levels can be refilled with top rollers to be ground at any time. When a top roller is removed from a rail pair by the separator, the top rollers still remaining on the rail pair roll along the rails towards the end of the rail pair facing the separator due to the incline of the rail pair, due to gravity and without the need for a drive.This also offers the advantage that the removal of a top roller from a respective pair of rails can always take place at the same position. This simplifies the necessary movement sequences of the individual elements of the separator.

[0008] To determine the position of the top roller ready for removal, the rails are preferably formed with a step at the ends facing the separator. The step is arranged in such a way that the top rollers rolling downwards due to the incline hit the step, thereby stopping the rolling movement. The step cancels out the incline so that the top rollers on the same pair of rails automatically pile up, with the distance between the individual top rollers being determined by the diameters of the spinning cylinders that meet. The vertical distance between the adjacent pairs of rails is determined by the spinning cylinders with the largest diameter that can be machined by the grinding machine. The pairs of rails are arranged vertically one above the other, and the design in identical levels means that a capacity of over 500 top rollers can be achieved in a full magazine.

[0009] The vertical conveyor is advantageously designed as an endless chain conveyor with a lower deflection wheel and an upper deflection wheel. Compared to an elevator, an endless chain conveyor has the advantage of enabling continuous conveying operation. With an elevator, an empty run to the transfer point of the next top roller is necessary between the lifting of each top roller. This is not necessary with an endless chain conveyor, as the endless chain is divided into a conveying strand and an empty strand via the lower and upper deflection wheels. The conveying strand is on the side of the deflection wheels on which the endless chain moves upwards, i.e., carries out the actual lifting movement of the top rollers. Accordingly, the empty strand is on the other side of the deflection wheels on which the endless chain moves downwards. For the purposes of the invention, an endless chain is understood to mean chains composed of individual chain links, as well as bands or belts.The endless chain is preferably a toothed belt with teeth on one side facing the idler pulleys. Conveyor elements for transporting the top rollers are provided on a side of the toothed belt facing away from the idler pulleys. Due to the smooth movement of the endless chain, a simple electric motor can also be used as the drive. A servo motor with a magnetic brake is preferably used. The servo motor enables the conveyor speed to be changed to adapt to the grinding machine's timing and eliminates the need for a gearbox. In the event of a power failure, the magnetic brake prevents the conveyor from rotating backward due to the top rollers located in the conveyor strand and holds the endless chain in its current position until it is restarted. The drive is advantageously attached to the lower idler pulley, which simplifies the design for the drive mount.

[0010] Furthermore, it is advantageous if the separator has a base body and a lifting device arranged on the base body so that it can move relative to the respective pair of rails, wherein the lifting device is provided for lifting a top roller from the respective pair of rails. The base body is connected to a drive which enables vertical movement, for example a pneumatic lifting drive, a rack and pinion drive, or a lift. In order to pick up a top roller from one of the pairs of rails, a lifting device is provided which engages under the axle bolt of the top roller and lifts the top roller from the pair of rails. However, since vertical movement of the separator is intended in order to move from one pair of rails to the next, the lifting device is arranged so that it can move.As soon as a pair of rails is reached by the separator, the lifting device is moved under or between the pair of rails and the corresponding top rollers are removed. Before the next pair of rails can be reached by vertically moving the separator, the lifting device must be moved out of the area of ​​the pair of rails or the axle pins of the top rollers to prevent the separator from colliding with top rollers that have not yet been removed. The separator advantageously has a pneumatic drive for moving the lifting device against the respective pair of rails. An electric motor drive is also conceivable, with pneumatics offering the advantage of a simple and space-saving design.

[0011] The lifting device itself, once moved into the area of ​​the top roller to be removed, is moved in such a way that the top roller is lifted out of the pair of rails. The movement required for this can be achieved using a variety of technical designs. For example, a gripper can be provided on the lifting device, which grips the top roller and lifts it out of the pair of rails. It has been found that a sufficient lift of the top roller can be achieved with a simple latch held around a pivot point in the lifting device, which engages under the axle bolt. By tilting the latch around the pivot point, the top roller is lifted out of the pair of rails. The lifting device is preferably equipped with a pneumatic drive to move the latch. The latch can also be used to lift all common types and sizes of top rollers out of the pair of rails without any adjustment work.

[0012] After the top roller has been lifted out of the pair of rails, it must be transferred to the vertical conveyor. For this purpose, the gripper of the lifting device can, for example, be provided with an appropriate range of motion. Preferably, however, the separator has a pair of guide rails to transfer the top roller from the pair of rails to the vertical conveyor. The pair of guide rails is designed such that the guide rails connect directly to the rails of the pair of rails, and the top roller, lifted in the pair of rails by the latch, rolls to the vertical conveyor without the need for a drive due to the inclination of the guide rails. This design eliminates the need for handling devices with additional moving components. There is also no need to grip or hold the top roller with a corresponding tool for transferring it from the pair of rails to the vertical conveyor.

[0013] Preferably, the vertical movement of the separator is achieved with a recirculating ball screw. Drives with a recirculating ball screw, or a recirculating ball nut, have the advantage of being backlash-free. This enables precise, repeated movement to predetermined positions. The separator can precisely move to each of the rail pairs via the recirculating ball screw without the need for separate sensors. A pitch of the recirculating ball screw results in a defined vertical displacement of the separator per revolution or fraction of a revolution of the recirculating ball screw. With a suitable drive for the recirculating ball screw, for example, a stepper motor, the separator can be moved from one rail pair to the next without the need for complex sensors thanks to the backlash-free control system.

[0014] Advantageously, an end sensor is provided for detecting the separator's zero position. The zero position is preferably located at the lower end of a possible travel path of the separator. The zero position is used to calibrate the separator's drive system. From the zero position, the first pair of rails is approached, or the zero position corresponds to the position of the first pair of rails. This allows the control system to know the position for approaching the subsequent pairs of rails. By performing a corresponding number of rotations of the drive or the ball screw, each of the pairs of rails can now be approached precisely.

[0015] The separator can remain at the position of a specific pair of rails until all of the top rollers on that pair of rails have been removed and fed to the vertical conveyor. The lifting device is then returned to its home position, and the separator is moved vertically to the next pair of rails. The separator is advantageously equipped with a sensor for detecting a top roller on a pair of rails. Because the magazine is filled manually, even while top rollers are being removed, not all pairs of rails are necessarily full. The sensor allows the separator, or rather the control system, to detect whether at least one top roller is present in a pair of rails. If no top roller is present, the separator can be moved directly to the next pair of rails.The sensor also allows the separator to remain on a pair of rails until all the top rollers on it have been removed. There's no need to follow a specific order for filling the rail pairs, as the sensor allows the separator to always find the rail pairs that have top rollers on them.

[0016] Preferably, an adjustment of the distance between the rails of a rail pair is provided, wherein the superimposed rails of the rail pairs of the magazine are connected to one another so that the adjustment of the distances for all rail pairs of a magazine takes place simultaneously. Due to the variety of top rollers in use, a magazine with rigid rail pairs can only be used to a limited extent. With an adjustability of the distance between the rails, a magazine can be used universally, within the scope of the possibilities offered by the grinding machine. This allows the distance between the rails of the rail pairs to be set for the top rollers to be machined, which results in optimal rolling of the top rollers on the rail pair.This also makes it possible to provide top rollers with different axial axle pin lengths or different spinning cylinder sizes in the same magazine for a grinding machine. The rails of the individual rail pairs, which are arranged vertically one above the other, are coupled with a rigid connection. This allows the distance between the rails to be adjusted via a central device, for example a handwheel with a spindle. Using such a device, the distance can be adjusted without the use of tools or replacing components. Due to the length of the rail pairs, an optimal design of the device for adjusting the distance results in an adjustment arranged at one start and one end of the rail pairs.It is also advantageous if the distance adjustment device has a scale indicating the set distance between the rails. Alternatively, the scale can also contain the type designation of the top rollers to which the set distance applies.

[0017] It is also advantageous if the guide rails of a separator's guide rail pair are also equipped with a device for adjusting their spacing. This means that adjusting the spacing between the rails does not require rebuilding the separator, but rather simply adjusting the spacing between the guide rails. This allows for a wider range of possible rail spacings and thus the range of processable top roller variants. When using guide rails with a fixed spacing, only a specific range of top roller variants can be removed from the rail pairs with the separator.

[0018] The endless chain conveyor advantageously has a plurality of paired carriers for receiving the top rollers from the separator. The paired carriers can be mounted on a single endless chain or on two adjacent endless chains, toothed belts, or bands. The carriers are advantageously designed as hooks angled upwards in a conveying direction, viewed from the upward lifting movement. During their upward movement, the carriers or hooks grasp the top rollers transferred from the separator by gripping under their spinning cylinders. The top rollers, with their spinning cylinders resting on a pair of hooks, are conveyed upwards with the lifting movement of the conveyor strand.Alternatively, the carriers can also be designed and arranged in such a way that the upper rollers are gripped by the carriers under their axle bolts and are subsequently conveyed upwards with their axle bolts resting on the carriers.

[0019] Preferably, an adjustment of the track width between the carriers of a carrier pair is provided. The carriers of a carrier pair are each arranged on separate chains, which are arranged on separate upper and lower deflection wheels on a common upper and lower rotational axis. The chains can be designed as link chains or also toothed belts or bands. The track width is adjusted by moving the upper and lower deflection wheels on their respective rotational axis. Such devices for adjusting track widths on a common axis are known from the prior art and can, for example, be provided with a handwheel as a manual drive. Due to the possibility of adjusting the track width, the design of the carriers can be limited to one variant.With the ability to adjust the track width, the carriers are suitable for transporting top rollers with different axle lengths or different sizes of spinning cylinders without any structural adjustments, and there is no need to convert the vertical conveyor when changing the type of top rollers.

[0020] Advantageously, a pair of transfer rails is provided above the upper deflection wheel for removing the top rollers from the endless chain conveyor. When the endless chain, or rather the carriers, are deflected around the upper deflection wheel, the top rollers are lifted out of the carriers by the pair of transfer rails. As the carriers move around the upper deflection wheel, the top rollers come to rest on the transfer rails with their axle bolts and are moved further along these transfer rails by the carriers. The transfer rails are arranged in such a way that, due to their geometry and layout, they cause the top rollers to leave a section of the carriers on their way around the upper deflection wheel. The geometry of the transfer rails is designed in such a way that the top rollers are pushed by the carriers on the transfer rails to an area where the transfer rails are designed with a gradient leading away from the separator.As a result, the top rollers roll on the transfer rails without any additional drive from the area of ​​the carriers guided around the upper deflection wheel and are guided to a takeover point where they are dispensed from the magazine.

[0021] Preferably, guide plates are provided outside the transfer rail pair to center the top rollers on the transfer rail pair. Since the top rollers can move during the individual transport phases via the rail pairs, the separator guide rails, and the carriers in the direction of their axle pin axes, guide plates are arranged on the transfer rails to define the axial arrangement of the top rollers. The guide plates are mounted on both sides of the transfer rails, with the distance between the guide plates narrowing evenly in the direction of movement of the carriers or the top rollers transported by the carriers. This centers the top rollers on the transfer rails before the transfer point.

[0022] It is also advantageous if the distance between the transfer rails of the transfer rail pair and the guide width between the guide plates are independently adjustable. Since the distance between the transfer rails is determined by the axial length of the axle pin between the spinning cylinders, while the guide width between the guide plates is determined by the total axial length of the top rollers, the distance can remain the same when changing the top rollers, for example, while the guide width changes. The reason for this is that the guide width is determined by the axial length of the axle pins and the type of spinning cylinder used.

[0023] It is advantageous to provide a synchronization sensor to synchronize the position of the separator and the flight of the endless chain conveyor. To ensure a smooth transition of the top rollers from the separator guide rails to the endless chain conveyor flights, the height at which the top rollers drop into the flights must be minimized. It must also be avoided that a top roller runs into a passing pair of flights. Since the top rollers, after being lifted out of the pair of rails, roll automatically over the separator guide rails, which are designed with a corresponding incline, to the flights of the endless chain conveyor, it is important that the timing of the top roller's lift out of the pair of rails is coordinated with the movement of the flights to ensure a smooth process.Since the separator operates at different heights, but the flight pairs of the endless chain conveyor are continuously moving, a relative position of the flight pairs in relation to a position of the separator is necessary to determine the ideal time for lifting the top roller from the pair of rails. By arranging the synchronization sensor on the moving separator, the position of the flight pairs determined by the synchronization sensor is always determined relative to the position of the separator. With the help of the synchronization sensor, it can be ensured that each flight pair of the endless chain conveyor is equipped with a top roller by the separator, thereby utilizing the possible conveying capacity of the endless chain conveyor and allowing it to be operated with the slowest possible lifting movement.

[0024] Furthermore, a grinding machine for grinding spinning cylinders of a top roller of fiber-processing machines is proposed, comprising a feed magazine, a discharge magazine, and a processing module. The processing module comprises at least one measuring device, a grinding device, and a transport element, and the feed magazine is designed as a magazine as described above. The top rollers are taken from the feed magazine or the measuring device by the transport element and transported by the grinding device to the discharge magazine. The current diameters of the spinning cylinders are measured in the measuring device before grinding. By measuring the diameters, the top rollers or their spinning cylinders can be individually ground.Without a measuring device, all spinning cylinders would be ground to a specified standard diameter, even if this would not be necessary for all top rollers or would result in insufficient removal of a worn surface. The measuring device is preferably located between the feed magazine and the transport element. This makes it possible to measure the spinning cylinders on their way to the transport element. Transfer guides are provided for transferring the top rollers from the feed magazine. Preferably, the processing module has two transport elements arranged parallel to one another. By doubling the transport element, the capacity of the grinding machine is also doubled. Accordingly, the feeds from the feed magazine are also duplicated.

[0025] In the following, the invention is explained using an exemplary embodiment and explained in more detail by the drawing.

[0026] Figure 1 shows a schematic representation of a top roller according to the prior art;

[0027] Figure 2 shows a schematic representation of an embodiment of a magazine;

[0028] Figures 3a to 3c show a schematic representation of a movement sequence of an embodiment of a separator;

[0029] Figure 4 shows a schematic representation of a cross-section at point XX in Figure 3c;

[0030] Figure 5 shows a schematic representation of an embodiment of a vertical conveyor;

[0031] Figure 6 shows a schematic representation of a view from direction Y of Figure 5 and Figure 7 shows a schematic representation of an embodiment of a grinding machine.

[0032] Figure 1 shows a schematic representation of a prior art top roller 1 with two spinning cylinders 2. The top roller 1 has an axle pin 3 with an axis 4, at each end of which a spinning cylinder 2 is mounted. The spinning cylinders 2 are rotatably mounted on the axle pin 3 and are fixed in position in the direction of the axis 4. The spinning cylinders 2 each have a sleeve 5 and a cover 6 applied to the sleeve 5.

[0033] Figure 2 shows a schematic representation of a first embodiment of a magazine 7. The magazine 7 has a plurality of rail pairs 17, a separator 8 and a vertical conveyor 10. The rail pairs 14 are each arranged vertically one above the other at an inclination 15 towards the separator 8. A plurality of top rollers 1 can be mounted in or on the individual rail pairs 14. The illustrated embodiment of the magazine 7 shows rail pairs 14 with individually different fillings of top rollers 1. For operation of the magazine 7, it is immaterial which rail pairs 14 are each equipped with how many top rollers 1. At an end of the rail pairs 14 opposite the separator 8, these can be manually filled with top rollers 1 on a so-called loading side 18 of the magazine 7. No specific order for filling the individual rail pairs 14 needs to be observed.The rails of a rail pair 14 each have a shoulder 17 at their end facing the separator 8. The shoulder 17 serves to stop the upper rollers 1 rolling on their axle bolts 3 on the rail pairs 14, due to the inclination 15, against the separator 8, and thus to enable filling of the individual rail pairs 14 with a number of upper rollers 1.

[0034] The separator 8, driven by a ball screw 26, has a vertical travel capability 9 and can thus be moved vertically along the ends of the rail pairs 14 facing it, from one rail pair 14 to the next rail pair 14. A zero position of the separator 8 is determined via an end sensor 32, whereby a position can be calibrated during the movement of the separator 8. The endless chain conveyor 10 has an endless chain 36, which rotates endlessly via an upper deflection wheel 40 and a lower deflection wheel 39 and thereby causes a lifting movement 11 on a side facing the separator 8. The lifting movement 11 feeds the top rollers 1 removed from the rail pairs 14 by the separator 8 to a transfer point 12. At the transfer point 12, the top rollers 1 are taken out of the magazine 7 and fed, for example, to a grinding machine 46 (see Figure 7).

[0035] Figures 3a to 3c show a schematic representation of a movement sequence of an embodiment of a separator 8. The separator 8 has a base body 19. On the base body 19 there is a lifting device 20 with a pawl 23 held thereon at a pivot point 24. Furthermore, the base body 19 is connected to a ball screw 26, which enables vertical mobility 9 of the separator 8. A pair of guide rails 29 is also arranged in the separator 8. In Figure 3a, the separator 8 is positioned on a pair of rails 14 by the vertical mobility 8. A first top roller 33 and a second top roller 34 with their respective axle bolts 3 are arranged on the pair of rails 14. The first top roller 33 is held in its position on the pair of rails 14 by the shoulder 17. The second top roller 34 is arranged adjacent to the first top roller 33.

[0036] Figure 3b shows the separator 8 with the lifting device 20 retracted into the pair of rails 14 by a displacement 22. The pawl 23 thereby passes under the axle bolt 3 of the first top roller 33.

[0037] Figure 3c shows the separator 8 with the pawl movement 25 effected by a latch movement around the pivot point 24. The latch movement 25 lifts the first top roller 33 from the pair of rails 14 to a level with the pair of guide rails 29. The first top roller 33 then rolls along the pair of guide rails 29 in the direction of the arrow over the separator 8. The second top roller 34 then rolls on the pair of rails 14 against the separator 8 until it is stopped by the shoulder 17. The latch movement 25 is then reversed and performed again to lift the second top roller 34 from the pair of rails 14 onto the pair of guide rails 29. This sequence is repeated until there are no more top rollers on the pair of rails 14. The lifting device 20 is then brought into a basic position by reversing the displacement 22 and can be moved to the next pair of rails 14 via the vertical movement 9.

[0038] Figure 4 shows a schematic representation of a cross-section at point XX in Figure 3c. The base body 19 is connected to the ball screw 26 via a ball nut 27. Spindle rotation 28 achieves vertical displacement of the base body 19 along the ball screw 26. The lifting device 20 is also held on the base body 19 via a sliding bearing 21. The lifting device 20 has the pawl 23 held by the pivot point 24. The rails 13 and the guide rails 30 are arranged at a distance 16 from each other on both sides of the pawl 23. The upper roller 1 rests with its axle bolt 3 on the rails 13 and the pawl 23. The pawl 23 lifts the upper roller 1 over the shoulder 17 of the rails 13 to a level with the guide rails 30 arranged behind the rails 13. A sensor 31 is also arranged on the base body 19, which serves to detect a top roller 1 on the rails 13.

[0039] Figure 5 shows a schematic representation of an embodiment of a vertical conveyor in the form of an endless chain conveyor 35. The endless chain conveyor 35 runs around a lower deflection wheel (not shown) and an upper deflection wheel 40 with an upper rotation axis 41. The endless chain conveyor 35 has a chain 36 with a plurality of carrier pairs 37 arranged at a specific distance from one another. The endless chain conveyor 35 is continuously moved in the direction of the arrow by a drive (not shown), resulting in the lifting movement 11. A top roller 1 moving along the guide rail pair 29 to the endless chain conveyor 35 is picked up by the carrier pair 37 of the endless chain conveyor 35 as it passes by and is transported upwards with the lifting movement 11. The carriers 38 of a carrier pair 37 engage under the spinning cylinders 2 of a top roller 1 lying on the guide rail pair 29.During the circular movement of the chain 36, or rather the pair of carriers 37, around the upper deflection wheel 40, the upper roller 1 runs with its axle pin 3 onto a pair of transfer rails 42 and is subsequently pushed forward by the pair of carriers 37 on the pair of transfer rails 42. The geometry of the pair of transfer rails 42 is designed such that the upper roller 1 is guided out of the area of ​​the pair of carriers 37 moving around the upper deflection wheel in the direction of the arrow and rolls to the transfer point 12. In order to center the upper roller 1 on the pair of transfer rails 42, guide plates 44 are arranged on both sides of the pair of transfer rails 42 in the area where the upper roller 1 is transferred from the pair of carriers 37 to the pair of transfer rails 42. Figure 5 only shows the guide plate 44 arranged behind the pair of transfer rails 42.Furthermore, a synchronization sensor 45 is shown, which determines a position of the driver pairs 37 relative to the transfer rail pair 42.

[0040] Figure 6 shows a schematic representation of a view from direction Y of Figure 5. In the embodiment shown, the endless chain conveyor 35 consists of two chains 36 arranged parallel to one another, which are identical in design. The two chains 36 each rotate around an upper deflection wheel 40, wherein the two deflection wheels 40 are connected to one another in a rotationally secure manner by an upper pivot axis 41. A plurality of carriers 36 are arranged at a distance from one another on the chains 36, with two opposing carriers 38 each forming a carrier pair 37. The adjacent chains 36 are arranged at a distance from one another with a track width 55, wherein the track width 55 corresponds to a distance between opposing carriers 38 of a carrier pair 37. An adjusting element 56 can be provided in the pivot axis 41, whereby the track width 55 can be increased or decreased, for example by means of a handwheel.Each of the carrier pairs 37 holds a top roller 1 with its spinning cylinders 2 and is conveyed upwards by the lifting movement 11 of the chains 36. The carrier pair 37 pushes the top roller 1 with its axle pin 3 onto the transition rails 43 in the area of ​​the upper deflection wheels 40 and guides it along these (see Figure 5). The transition rails 43 are arranged at a distance 57 from one another and between the carriers 38 of the carrier pair 37, so that the carriers 38 can be moved past the transition rails 43 with the chains 36 around the deflection wheels 40. A guide plate 44 is arranged on each of the two outer sides of the chains 36. As a result, the upper roller 1, which rests with its axle bolt 3 on the transition rails 43, is centered in its movement over the transition rails 43 and a defined axial position is ensured for a transfer of the upper rollers 1 to a subsequent grinding machine.The two guide plates 44 are spaced apart from each other by a guide width 58 and are arranged so far outside the transition rails 43 that centering can be achieved by the outer surfaces of the spinning cylinders 2 held on the axle bolt 3.

[0041] Figure 7 shows a schematic representation of an embodiment of a grinding machine 46. The grinding machine 46 has a feed magazine 47, a processing module 48, and a discharge magazine 49. The grinding machine 46 is, for example, constructed with the processing module 48 on a foundation 54, and the feed magazine 47 and the discharge magazine 49 are attached to the processing module 48. In the feed magazine 47, top rolls 1 to be ground are stored in several levels on pairs of rails 14. The feed magazine 47 further has a vertical conveyor 10 and a separator 8 arranged between the vertical conveyor 10 and the plurality of pairs of rails 14. The processing module 48 has a transport element 51 rotatably mounted in a transport direction 52. Furthermore, a grinding device 53 and a measuring device 50 are provided in the processing module 48.The top rollers 1 are removed from the rail pairs 14 by the separator 8 and transferred to the processing module 48 via the vertical conveyor 10 at a transfer point 12. The top rollers 1 then pass through the measuring device 50, in which the diameter of the spinning cylinders of the top rollers 1 is measured. The top rollers 1 are then transferred by the transport element 51 in the transport direction 52 into the grinding device 53 and, after grinding, transferred to the discharge magazine 49.

[0042] The present invention is not limited to the illustrated and described embodiments. Modifications within the scope of the patent claims are possible, as are combinations of features, even if they are illustrated and described in different embodiments. Legend

[0043] 1 top roller

[0044] 2 spinning cylinders

[0045] 3 axle bolts

[0046] 4 axis

[0047] 5 sleeve

[0048] 6 Reference

[0049] 7 Magazine

[0050] 8 separators

[0051] 9 Mobility

[0052] 10 vertical conveyors

[0053] 11 Lifting movement

[0054] 12 Transfer point

[0055] 13 Rail

[0056] 14 pairs of rails

[0057] 15 inclination

[0058] 16 Distance

[0059] 17 paragraph

[0060] 18 Loading side

[0061] 19 basic bodies

[0062] 20 Lifting device

[0063] 21 sliding bearings

[0064] 22 Postponement

[0065] 23 jack

[0066] 24 Pivot point

[0067] 25 latch movement

[0068] 26 ball screw

[0069] 27 Ball screw nut

[0070] 28 Spindle rotation

[0071] 29 pair of guardrails

[0072] 30 Guide rail 31 Sensor

[0073] 32 End sensor

[0074] 33 First top roller

[0075] 34 Second top roller

[0076] 35 endless chain conveyors

[0077] 36 chain

[0078] 37 pair of drivers

[0079] 38 drivers

[0080] 39 Lower idler wheel

[0081] 40 Upper pulley

[0082] 41 Upper rotation axis

[0083] 42 pair of transfer rails

[0084] 43 Transfer rail

[0085] 44 guide plate

[0086] 45 Synchronization sensor

[0087] 46 grinding machine

[0088] 47 template magazine

[0089] 48 Editing module

[0090] 49 Dispensing magazine

[0091] 50 measuring device

[0092] 51 Transport element

[0093] 52 Transport direction

[0094] 53 Grinding device

[0095] 54 Foundation

[0096] 55 gauge

[0097] 56 Adjustment element

[0098] 57 Distance

[0099] 58 guide width

Claims

Patent claims 1. Magazine (7) for providing a plurality of top rollers (1) of fiber-processing machines, wherein the magazine (7) has a plurality of pairs of rails (14) arranged vertically one above the other and a separator (8) and a vertical conveyor (10), and the separator (8) is arranged between the pairs of rails (14) and the vertical conveyor (10), characterized in that the pairs of rails (14) are each arranged with an inclination (15) towards the separator (8) and that a vertical mobility (9) of the separator (8) is provided.

2. Magazine (7) according to claim 1, characterized in that the vertical conveyor (10) is designed as an endless chain conveyor (35) with a lower deflection wheel (39) and an upper deflection wheel (40).

3. Magazine (7) according to claim 1 or 2, characterized in that the separator (8) has a base body (19) and a lifting device (20) arranged displaceably against the respective pair of rails (14) on the base body (19), wherein the lifting device (20) is provided for lifting a top roller (1) from the respective pair of rails (14).

4. Magazine (7) according to at least one of the preceding claims, characterized in that the separator (8) has a pair of guide rails (29) for transferring the upper roller (1) from the pair of rails (14) to the vertical conveyor (10).

5. Magazine (7) according to at least one of the preceding claims, characterized in that the vertical movement (9) of the separator (8) is carried out with a ball screw (26).

6. Magazine (7) according to at least one of the preceding claims, characterized in that an end sensor (32) is provided for detecting a zero position of the separator (8).

7. Magazine (7) according to at least one of the preceding claims, characterized in that the separator (8) has a sensor (31) for detecting a top roller (1) located on a pair of rails (14).

8. Magazine (7) according to at least one of the preceding claims, characterized in that an adjustment of a distance (16) between the rails (13) of a rail pair (14) is provided, wherein the superimposed rails (13) of the rail pairs (14) of the magazine (7) are connected to one another, so that an adjustment of the distances (16) for all rail pairs (14) of a magazine (7) takes place simultaneously.

9. Magazine (7) according to at least one of claims 2 to 8, characterized in that the endless chain conveyor (35) has a plurality of drivers (38) arranged in pairs for taking over the top rollers (1) from the separator (8).

10. Magazine (7) according to claim 9, characterized in that an adjustment of a track width (55) between the drivers (38) of a driver pair (37) is provided, wherein the drivers (38) of a driver pair (37) are arranged on separate chains (36) which are guided via separate upper and lower deflection wheels on a common upper and lower axis of rotation, and wherein the adjustment of the track width (55) is provided by a displacement of the upper and lower deflection wheels (39, 40) on their respective axis of rotation (41).

11. Magazine (7) according to at least one of claims 2 to 10, characterized in that a pair of transfer rails (42) for removing the upper rollers (1) from the endless chain conveyor (35) is provided above the upper deflection wheel (40).

12. Magazine (7) according to claim 11, characterized in that guide plates (44) for centering the upper rollers (1) on the transfer rail pair (42) are provided outside the transfer rail pair (42).

13. Magazine (7) according to claim 12, characterized in that a distance (57) between the transfer rails (43) of a transfer rail pair (42) and a guide width (58) between the guide plates (44) are adjustable independently of one another.

14. Magazine (7) according to claim 9, characterized in that a Synchronization sensor (45) is provided for synchronization between the separator (8) and a position of the carriers (38) of the endless chain conveyor (35).

15. Grinding machine (46) for grinding spinning cylinders (2) of a top roller (1) of fiber-processing machines with a feed magazine (47) and a discharge magazine (49) and a processing module (48), wherein the processing module (48) has at least one measuring device (50) and a grinding device (53) and a transport element (51), characterized in that the feed magazine (47) is designed as a magazine (7) according to at least one of the preceding claims.

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