Device and method for processing filament strands for the production of bristle goods

Description

BE2025 / 5736 2 proposes a device for processing filament strands which has the means and features of the independent claim directed to such a device. To solve the problem, a device for processing filament strands is thus proposed in particular, wherein the device comprises a grinding station with a grinding device for grinding free filament ends of filament strands and a scraper which is configured to move a sheath surrounding the filament strand between a covering position and a recessed position in which the free filament ends are exposed for processing. Filament strands have a sheath which holds the bristle filaments together in the filament strand. For further processing of the bristle filaments in the manufacture of bristle goods, the bristle filaments are rounded at the ends. This is done with the Grinding device of the apparatus.15 In order to be able to process the free filament ends of the filament strand with the grinding device, it is necessary,to remove the sheathing of the filament strand and expose the filament ends. By means of its scraper, the device is designed to move the sheathing between a covering position, in which the sheathing also covers the filament ends of the filament strand, and a position set back in comparison, in which the free filament ends are exposed for processing. Manual effort to expose the free filament ends of the filament strand to be processed can thus be avoided. The device may have at least one fixing device, for example a fixing gripper. The fixing device is designed to fix the sheathing in its set-back position during the processing of the free filament ends. When processing the free filament ends of a filament strand to be processed on the grinding device, the movements occurring during this process can be 2025 / 5736 BE2025 / 5736 3 Add bristle filaments,that the sheathing, which has been shifted into the recessed position, slips back into its covering position over the free filament ends. This is effectively prevented by the fixing agent, so that the processing of the free filament ends can be carried out undisturbed. 5 In one embodiment of the device, the fixing agent is fixedly arranged in the grinding station. In another embodiment of the device, a fixing agent is arranged on the filament strand holder. Another embodiment has a fixing agent on the filament strand holder and another fixing agent in the grinding station. 10 In one embodiment of the device, the wiper is a gripper. A parallel gripper is preferably used. The scraper can have gripper jaws with a friction-enhancing surface. The friction-enhancing surface can consist, for example, of rubber and / or a soft plastic. The friction-enhancing surface makes it possible to grip the casing, which can consist of a plastic film.to grip the filament with the wiper and to reliably transfer the forces required to move the casing to the casing. The device can have at least one movable filament strand holder 20. The filament strand holder allows the filament strand to be fed, for example, to the grinding device of the device. The filament strand holder also makes it possible to transport a filament strand back and forth between individual stations of the device. This is particularly advantageous if the device has a grinding station and 25 at least one other station, for example, a puck cutting station and / or a suction station. For moving the movable filament strand holder, the device can have at least one positioning drive. By means of the at least one positioning drive, the device can be configured to perform 30 different movements of the filament strand holder, for example, linear movements or pivoting movements. In one embodiment of the device, it is provided thatthat a positioning drive is configured to execute a pivoting movement of the filament strand holder around a rotation axis aligned in the direction of a longitudinal axis of a held filament strand. The rotation axis can, for example, be vertically oriented. The rotation axis can be aligned in the direction of a longitudinal axis of the filament strand holder and / or vertically. Furthermore, at least one positioning drive can be configured to move the filament strand holder along a linear axis of the device. The linear axis can, for example, be aligned in the longitudinal direction of the held filament strand and / or vertically and / or in the direction of a longitudinal axis of the filament strand holder. Thus, a feed of a filament strand held by the filament strand holder to a puck cutting station and / or the grinding station and its grinding device mentioned above is possible. It is also conceivable thatto adjust the filament strand holder in a linear movement, particularly horizontally oriented, along a corresponding linear axis of the device. In a preferred embodiment of the device, the filament strand holder is height-adjustable and / or pivotable about a vertically oriented rotational axis of the device. This makes it possible to move the filament strand holder in different movement patterns. The filament strand to be processed can, for example, first be fed to the grinding station and the grinding device using the filament strand holder and its positioning drive. At the grinding device, the filament strand holder can position the filament strand with its filament ends to be ground against an abrasive, for example, a grinding belt, of the grinding device and, if necessary, also guide it in a movement over the abrasive. 2025 / 5736 BE2025 / 5736 5 Furthermore, it is possible toThe filament strand can be fed to the abrasive of the grinding device in at least two different feed positions. This allows for particularly good end rounding of the filament ends. In a first step, filament ends can be positioned and ground against the surface of the abrasive of the grinding device in a first feed position. Subsequently, the filament strand can be fed further towards or against the abrasive. In this case, the filament strand can assume a second feed position closer to the abrasive of the grinding device. In this second feed position, the bristle filaments can then be bent and thus pressed against the surface of the abrasive at different angles and thereby rounded accordingly. The device can have at least one corresponding axis for the filament strand holder.for example, a rotational axis and / or at least a linear axis. The filament holder can perform pivoting or rotating movements around the rotational axis. Along the linear axis, the filament holder, together with a filament strand arranged on the filament holder, can be adjusted linearly, 20 for example, raised or lowered vertically or moved horizontally. This enables the filament strand to be fed to the grinding device, the extraction device, and / or the puck cutting station of the device already described. The filament holder can have a clamping device 25 that is designed to fix a filament strand to the filament holder. With the help of the clamping device, a filament strand can be fixed to the filament holder.when the filament strand holder is moved through the device together with the filament strand. In one embodiment of the device, the grinding device 30 has at least two abrasives. The abrasives can be, for example, 2025 / 5736 BE2025 / 5736 6 abrasive belts and / or have different grit sizes. The grinding device can be designed as a belt sander, preferably as a double belt sander. With the aid of a double belt sander, it is possible, if necessary, to process two filament strands simultaneously. If the grinding device 5 has at least two abrasives with different grit sizes, a filament strand can be ground successively with different grit sizes. The grinding device can be configured to drive the at least two abrasives in different and / or alternating directions of rotation 10 and / or at different and / or alternating speeds. This makes it possible toto process a filament strand with correspondingly complex grinding movements. In particular, the alternating direction of travel of the abrasives can be advantageous in order to achieve a reliable rounding of the free filament ends of the filament strand 15 during grinding. Even if the grinding device has only one abrasive, it can be advantageous for the grinding result if the grinding device is set up to drive at least one abrasive in alternating directions and / or at alternating speeds. 20 The grinding station can have a linear axis along which the grinding device can be positioned linearly relative to a filament strand to be processed. In this way it is possible to process a filament strand successively with two different abrasives of a grinding device,without having to change the position of the filament strand 25 on the grinding device. The relative position change between the filament strand and the grinding device can then be made by changing the position of the grinding device. The grinding station can also have a rotation axis oriented in the direction of a longitudinal axis of a 30 filament strand holder and / or a longitudinal axis of a 2025 / 5736 BE2025 / 5736 7 filament strand to be extracted, about which the grinding device can be swiveled and / or rotated. The swiveling or rotating ability of the grinding device can promote reliable rounding of the free filament ends of the filament strand. The device can, particularly in the grinding station, have a 5 extraction housing in which the grinding device is arranged. The extraction housing can have an insertion opening for a filament strand; with a corresponding number of insertion openings or a corresponding size of an insertion opening, it is also possible toIf necessary, more than one filament strand can be inserted into the extraction housing 10 and fed to the grinding device arranged therein. In one embodiment of the device, the extraction housing may have an aperture, in particular an iris aperture, with which the cross-sectional area of ​​the insertion opening of the extraction housing can be changed and / or closed. The aperture can be used 15 to hold the filament strand in its position inserted into the insertion opening and / or also to regulate the airflow into the extraction housing. After grinding, the aperture can also be used, if necessary, to realign the bristle filament of the filament strand, which has been fanned out by the grinding process, in the direction of a longitudinal center axis 20 of the filament strand. This reduces or completely eliminates any fanning of the filament strand. Inside the suction housing, at least one blower nozzle, for example at least a ring blower nozzle, can be arranged. With the help of the blower nozzle, it is possible toThe device may have at least one extraction station with an extraction device for extracting the ground filament ends. The particles generated during grinding of the filament strands can be loosened and then ultimately extracted. At least one suction nozzle, for example a ring suction nozzle, may be arranged within the extraction housing. Grinding dust generated during processing of 30 filament strands can be extracted via the suction nozzle within the extraction housing. 2025 / 5736 BE2025 / 5736 8 The device may have at least one extraction station with an extraction device for extracting the ground filament ends. After grinding the filament ends, the filament strands can be cleaned at the extraction stations and thereby freed from adhering particles and grinding dust. 5 If the device has two extraction stations, between which the grinding device may be arranged,The extraction of the ground filament ends from processed filament strands can be carried out with twice the cycle time of the grinding station. This enables thorough cleaning of the ground filament strands. 10 The device can have a puck cutting station with a cutting device. The cutting device can have at least one cutting blade. The cutting device of the grinding station is designed to separate filament pucks from the processed filament strand after grinding the free filament ends. As mentioned at the beginning, filament pucks are bundles in which length-cut bristle filaments are bundled for the manufacture of bristle products. In one embodiment of the device, the cutting device has a reversible cutting blade with at least two cutting edges. This allows for easy replacement of a dull cutting edge.without having to replace the entire cutting blade. To change the cutting edge, the reversible cutting blade can simply be turned around and the still intact cutting edge brought into cutting position 25 for separating filament pucks. The puck cutting station can have a support element that is designed to support a filament strand when separating a filament puck from the filament strand. In this context, it is advantageous if the support element is a laterally adjustable support element 30 that is designed to support the filament strand preferably laterally and 2025 / 5736 BE2025 / 5736 9 thereby against a feed movement of a cutting blade of the cutting device. The device may include a measuring system designed to determine and / or specify a cross-sectional area, diameter, radius and / or circumference of a filament strand and / or an individual gripping force of a filament strand, which is applied with the wiper or, for example, the aforementioned,Fixing agent must be applied to the filament strand during use. In this way, it is possible to grip filament strands of different dimensions individually and reliably, depending on their dimensions, for example, to move the sheathing between its covering position and the recessed position on the filament strand with the aforementioned wiper, or also to fix the filament strand with the fixing agent when processing it in the grinding device. The device can, for example, include a displacement measuring system, a length measuring rod, a camera, and / or a force measuring device with at least one force sensor. The device may have a receiving surface, in particular on a puck receiving table of the device, for receiving filament pucks 20 that have been separated from a filament strand. The receiving surface may be arranged below the aforementioned cutting device. It is advantageous if the receiving surface is movable between at least one receiving position and one discharge position.in particular height-adjustable, is.25 In the receiving position, the receiving surface can then receive a filament puck separated from the filament strand and then move it to the dispensing position. From the dispensing position, a separated filament puck can then be fed into a storage box of the filament puck device.30 With the aid of the height-adjustable receiving surface, it is also possible to determine the 2025 / 5736 BE2025 / 5736 10 length of the bristle filaments contained in the filament puck to be separated and thereby specify the height of the filament puck to be separated. For this purpose, the receiving surface of the device, in particular the aforementioned puck receiving table, can be moved at a corresponding 5 distance to a separating plane of the cutting device, within which a cutting blade of the cutting device is moved,The filament strand is arranged. Subsequently, the filament strand with its ground filament ends is moved against the receiving surface held in position. The filament strand can be fixed in this position. Then, the filament puck can be separated from the filament strand using the cutting device. To solve the problem, a method for processing filament strands is also proposed, wherein a sheathing of a filament strand is moved from a covering position to a recessed position using a wiper, thereby exposing the filament ends of the filament strand. Subsequently, the exposed filament ends are ground. The filament ends can be rounded in the process. When carrying out the method, a device according to one of the claims directed to such a device can preferably be used. In one embodiment of the process, after grinding the filament ends, the sheathing is pushed back into its covering position using a scraper, preferably the one mentioned above. 25 Subsequently, a filament puck can bethe ground filament ends are separated from the filament strand. The bristle filaments grouped in the filament puck are surrounded by a separated part of the filament strand's sheath. During the separation process, a portion of the filament strand's sheath is thus cut and remains attached to the bristle filaments contained within the filament puck. In one embodiment of the process, the filament ends are vacuumed off before the sheath is pushed back into its covering position. In this way, particles adhering to the filaments, which may reach the bristle filaments during the grinding of the filament ends, can be removed.to be removed. Extracting bristle filaments facilitates the subsequent processing of the bristle filaments in the manufacture of bristle products. The filament strand can be positioned with its filament ends against an abrasive of the grinding device in at least two different feed positions for grinding the filament ends. Positioning the filament ends to be ground in two different feed positions against an abrasive of the grinding device enables a particularly good end rounding of the filament ends. The sheathing of the filament strand can be held in its recessed position on the filament strand with a fixing device, for example with a fixing gripper, during grinding of the filament ends. This prevents,that the sheathing, due to the movements transferred to the bristle filaments of the filament strand 20 during grinding of the filament ends, slips back into its covering position on the filament strand and impairs the processing of the filament ends with the grinding device. The fixative can also be used to realign fanned-out bristle filaments of the filament strand after grinding the 25 filament ends back into the filament strand in the direction of a longitudinal center axis of the filament strand. In doing so, the fixative can be opened to such an extent compared to its fixative position that it releases the sheathing of the filament strand and the filament strand can be moved relative to the fixative 30 applied to it.without displacing the 2025 / 5736 BE2025 / 5736 12 sheathing. Subsequently, the filament strand can be moved through the opened fixative while the bristle filaments are attached, and / or the opened fixative can be moved past the filament strand. This allows the fanned-out bristle filaments to be reattached. After grinding off the free filament ends, a filament puck can be separated from the filament strand. A cutting blade of a cutting device of the apparatus on which the process is carried out can be used for this purpose. The height of the filament puck, and thus the length of the bristle filaments contained within the filament puck, can be defined by a distance of 10 between a cutting plane, in which the cutting blade of the cutting device moves when separating the filament puck from the filament strand, and a receiving surface for the separated filament puck. The receiving surface for the separated filament puck is positioned at the corresponding distance to the 15 cutting plane.The cutting blade of the cutting device is to be guided through the filament strand in order to separate a filament puck of the corresponding puck height from the filament strand. Before separating the filament puck, the filament strand can first be positioned with the ground filament ends 20 against the receiving surface. Subsequently, the separation cut can be made and the filament puck of the desired puck height can be separated from the filament strand. The filament strand can be supported against the feed direction of the cutting blade when separating a filament puck. The filament strand can also be fixed during the separation of a filament puck. For this purpose, the previously mentioned scraper, which allows the casing to be moved into the covered and retracted positions, can be used, for example. In this way, a separate gripper is avoided, thus reducing the cost of the device on which the process is carried out.can reduce. 2025 / 5736 BE2025 / 5736 13 When separating a filament puck, the wiper can preferably grip the filament strand with a higher force than when stripping the sheath of the filament strand. This facilitates the precise separation of filament pucks from the processed filament strand. After separating a filament puck, the filament strand can be temporarily placed on the cutting blade to reposition a filament strand holder in the longitudinal direction of the filament strand relative to the filament strand. Once the filament strand holder is repositioned relative to the filament strand, the filament strand can be clamped on the filament strand holder and a new cycle for processing the filament strand and separating a filament puck from the filament strand can begin. The invention is described in more detail below using an exemplary embodiment.However, it is not limited to this example. Further embodiments result from combining the features of one or more claims with each other and / or from combining one or more features of the embodiment. Figure 1 shows a perspective view of a device according to the invention for processing filament strands, comprising two filament strand holders movably mounted on a stand, a grinding station with a grinding device for grinding bare filament ends of filament strands, two extraction stations, each comprising an extraction device for extracting ground filament ends and a filament wiper positioned in an extraction stream of the respective extraction device, and a puck cutting station in which filament pucks are cut from a filament strand held at a puck cutting station. 2025 / 5736 BE2025 / 5736 14 storage boxes can be supplied,Figure 2: A perspective close-up view of the storage box with a total of four compartments for receiving filament pucks; Figure 3: A front view of the storage box shown in Figure 2, looking into the compartments of the storage box; Figure 5: The device shown in Figure 1 in a protective housing; Figure 5: The device shown in Figures 1 and 4, looking towards the puck cutting station; Figure 6: The detail marked with a circle in Figure 5, enlarged in Figure 10, with a scraper designed to push back a sheath surrounding the filament strand into a recessed position, in which the filament ends to be processed are exposed; Figure 7: A representation illustrating the pushing back of the sheath of the filament strand, with the filament strand still surrounded by the sheath at the end on the left side of the representation and on the The right side with the scraper from Figure 6 is freed from the sheathing at the end, so that the filament ends of the filament strand are exposed for processing by the grinding device of the apparatus,Figure 8 is another representation of the device with a view of the puck cutting station; Figure 9 is the detail marked with a circle in Figure 8 in an enlarged view, showing the filament strand exposed at the end on its way to the grinding station; Figure 10 is a perspective view of the device with a view of the grinding station and one of the extraction stations, wherein a filament strand is being processed in the grinding station and another filament strand, whose exposed filament ends have already been ground, is arranged in one of the two extraction stations; Figure 11 is the detail marked with a circle in Figure 10 in an enlarged view, showing the filament strand located in extraction station 5 with its free filament ends on the filament wiper arranged in the extraction stream of the extraction device.Figure 12 is a detailed view of the filament wiper shown in Figure 11, designed as a wire mesh, to illustrate the wire spacing between two adjacent mesh wires and the diameter and cross-section of the mesh wires used. Figure 13 is a perspective view of the device shown in the previous figures, wherein the extraction stations are equipped with alternative filament wipers in the form of wiper grids. Figure 14 is the detail marked with a circle in Figure 13 in an enlarged view. Figure 15 is a perspective view of the device shown in the previous Figure 20, looking towards the grinding station, to illustrate an extraction housing of the grinding station. Figure 16 is the detail marked with a circle in Figure 15 in an enlarged view, wherein on the top of the 25 The extraction housing of the grinding station has a housing opening with a cover arranged on it.Figure 17: A perspective view of the device shown in the previous figures, looking towards the grinding station and the partially broken-out extraction housing. Figure 18: The detail marked with a circle in Figure 17 in an enlarged view to illustrate the grinding device arranged inside the extraction housing, wherein the grinding device is designed as a belt sander with two independently driven grinding belts and is linearly movable along a linear guide inside the extraction housing and rotatable about a rotary axis. Figure 19: A perspective view of the device shown in the previous figures, looking towards the puck cutting station to illustrate the function of the wiper, with which the casing, previously moved to the rear position, is returned to its covering position. filament strand is brought, in order to subsequently separate a filament puck from the filament strand, Figure 20, the detail marked with the circle in Figure 19 in Figure 15 enlarged representation,Figure 21 shows a close-up of the filament strand on the left side of the illustration, with the sheathing still removed at one end, and the filament strand covered again with the sheathing after the use of the wiper; Figure 22 shows a perspective view of the device with a view of the puck cutting station of the device; Figure 23 shows an enlarged view of the detail marked with a circle in Figure 22, where it can be seen that the wiper previously used to move the sheathing of the filament strand is used to fix the filament strand when separating a filament puck using the cutting device; Figure 24 shows a representation of the filament strand before and after the creation of a cut to separate a filament puck. 2025 / 5736 BE2025 / 5736 17 Filament pucks from the filament strand. The figure includes a device designated as a whole by 1 for processing filament strands 2. The device 1 features a grinding station 3 with a grinding device 4 for grinding 5 filament ends 5 of filament strands 2 and a wiper 6.which is designed to move a sheath 7 surrounding the filament strand 2 between a cover position 8 and a recessed position 9, in which the free filament ends 5 of the filament strand 2 are exposed for processing. 10 The cover position 8 and the recessed position 9 of the sheath 7 on the filament strand 2 are illustrated in Figures 7 and 21. On the left side of Figure 7, the filament strand 2 with the sheath 7 in its cover position 8 is shown. The right side of Figure 7 shows the filament strand 2 with the sheath 7 arranged in the recessed position 915. Figure 21 shows on its left side the filament strand 2 with the sheath 7 in the recessed position 9. The right side of Figure 21 shows the filament strand 2 with the sheath 7 in its covering position. 20 The device 1 has a fixing means 10 in the form of a fixing gripper, which is designed toto fix the sheathing 7 in its recessed position 9 during the processing of the free filament ends 5. The fixing device 10 in use is shown, for example, in the enlarged views of Figures 11, 14, 16 and 18. 25 The stripper 6 for the sheathing 7 is designed as a gripper, namely as a parallel gripper, and has two gripper jaws 11 and 12 which have a friction-enhancing surface. The friction-enhancing surface of the gripper jaws 11 and 12 can, for example, consist of rubber and / or a soft plastic. The stripper 6 designed as a parallel gripper 30 is shown, for example, in Figures 6, 9, 20 and 23. 2025 / 5736 BE2025 / 5736 18. The stripper 6 can thus also be called a stripping gripper. The device 1 shown in the figures has two filament strand holders 14 movably arranged on a stand 13 of the device 1 and positioning drives 15 assigned to the filament strand holders 14,with which the filament strand holders 14 can be moved. The filament strand holders 14 are arranged on the stand 13 of the device 1 and can also be pivoted around a rotation axis 16 of the device 1 to move filament strands 2 to the individual stations of the device 1. 10 Each filament strand holder 14 has a clamping device 10 which is designed to fix a filament strand 2 to the respective filament strand holder 14. The clamping devices 17 are each arranged at the lower end of their respective filament strand holder 14. The clamping devices 17 can be seen particularly well in the enlarged views of Figures 6, 11, 14, 15, 16, 18, 20 and 23. In one embodiment of the device 1, the fixing means 10, with which the sheathing 7 can be fixed in its recessed position 9 on its filament strand 2 during the processing of the filament strand 2 on the grinding device 4,The grinding station 320 is arranged in a fixed position. In both devices 1 shown in the figures, each filament strand holder 14 has a fixing means 10 at its lower end, which can be moved together with the respective filament strand holder 14. 25 Figures 13, 17 and 18 show details of the grinding device 4. The grinding device 4 shown in the figures has two abrasives 18 and 19, which are designed as grinding belts and have different grit sizes. The grinding device 4 is essentially a belt sander, namely a double belt sander. The grinding device 4 is 30 designed to allow its two abrasives 18 and 19 to be moved in different and also changing directions of travel and at different or also changing speeds as required. to drive. This facilitates reliable grinding of the free filament ends 5 of a filament strand 2 to be processed. For example, Figure 18 illustrates that the grinding station 3 has a linear axis 205,along which the grinding device 4 can be positioned linearly relative to a filament strand 2 held in a processing position. This allows the grinding media 18 and 19 engaged with the filament strand 2 to be changed. The grinding station 3 also has a rotation axis 21 oriented in the direction of a longitudinal axis of a filament strand 2 arranged on a filament strand holder 1410, about which the grinding device 4 can be pivoted or rotated. The superposition of a pivoting or rotating movement of the grinding device 4 about the rotation axis 21 with the movement of the grinding media 18 and 19 enables a particularly good rounding of the 15 filament ends 5 of a filament strand 2. The device 1 also has an extraction housing 22 in the grinding station 3. The grinding device 4 is arranged in the extraction housing 22. The extraction housing 22 has an insertion opening 23 for a filament strand 2 on its upper side. The extraction housing 22 has a diaphragm 24, namely an iris diaphragm, on its 20 upper side.with the opening cross-section of the insertion opening 23 of the extraction housing 22 being variable and also largely closable when the filament strand 2 is inserted. The aperture 24 can be used to regulate the airflow into the extraction housing 22. With the aperture 25 open, more air can be drawn past the filament strand 2 located in the insertion opening 23 into the extraction housing 22. The extraction housing 22 is connected to a vacuum source designated 25. At least one blow nozzle and / or at least one suction nozzle can be arranged inside the extraction housing 24. Preferably, at least one ring blow nozzle and at least one ring suction nozzle 20 is used. The device 1 also has two extraction stations 26,each is equipped with an extraction device 27 for extracting the ground filament ends 5. The grinding device 4 and thus also the grinding station 3 are arranged between the two extraction stations 265. For example, Figure 10 illustrates the position of the grinding station 3 between the two extraction stations 26 particularly well. With the aid of the filament strand holders 14, filament strands 2 can be fed from the grinding station 3 and the grinding device 4 located therein to the extraction stations 26 and the extraction devices 2710 located therein. In both devices 1 shown in the figures, each of the two filament strand holders 14 serves one of the extraction stations 26. For this purpose, the filament strand holders 14 can be pivoted about the rotation axis 16 on the stand 13 of the device 1 by means of their positioning drives 15. 15 The device 1 also includes a puck cutting station 28 with a cutting device 29. The cutting device 29 is set up by its cutting blade 31 toFilament pucks 30 are separated from the filament strand 2. The separation of the filament pucks takes place after the free filament ends 5 have been ground and cleaned at 20 one of the extraction stations 26. The cutting device 29 has a reversible cutting knife 31 with at least two cutting edges. The puck cutting station 28 has a laterally adjustable support element 32. 25 The support element 32 is designed to laterally support a filament strand 2 when separating a filament puck 30 from the filament strand 2 against the feed direction of the cutting knife 31, namely transversely to the longitudinal direction of the filament strand 2. 30 The device1 further features a measuring system33 in the form of a 2025 / 5736 BE2025 / 5736 21 length measuring rod, which is designed to measure a cross-sectional area, a diameter,to determine at least indirectly a radius and / or circumference of a filament strand 2 and thus at least indirectly define an individual gripping force and / or positioning of the gripper jaws 11 and 12 of the wiper 6 and the aforementioned 5 fixing means 10. The length measuring rod is designed to determine the quantities of interest via an exact position of the gripper jaws 11 and 12. In this way, the cross-sectional dimension of the gripped filament strand 2 can be deduced from the position of the gripper jaws 11 and 12. Furthermore, the gripper jaws 11 and 12 of the 10 wiper 6 can be controlled precisely using the information determined with the length measuring rod.to grip the filament strand 2 and the sheath 7 precisely. Below the cutting device 29 of the puck cutting station 28, the device 15 has a receiving surface 34. The receiving surface 34 is formed on a puck receiving table 35. The receiving surface 34 on the puck receiving table 35 serves to receive cut filament pucks 30. The receiving surface 34 is arranged below the cutting device 29 and can be moved between a receiving position 20 (Figure 23) and a discharge position 20 (Figure 20), i.e., adjusted in height. Each extraction station 26 has an extraction device 27 for extracting ground filament ends 5 and at least one filament wiper 36 25, which is positioned in an extraction stream of the respective extraction device 27. The respective filament wiper 36 is designed toThe ground filament ends 5 are deflected and wiped during suction by a relative movement between the filament ends 5 and the filament wiper 36, thus releasing particles adhering to the 30 filament ends 5. The filament wipers 36 2025 / 5736 BE2025 / 5736 22 are particularly well shown in Figures 11, 12 and 14. Figures 11 and 12 show an embodiment of a filament wiper 36 which includes a wiper grid 37 or is designed as a wiper grid 37. Figures 13 and 14 show filament wipers 36 in the form of wiper grates 38. The wiper grates 38 shown in Figure 5 are cut or stamped from stainless steel sheets. The stripping grids 37 are wire grids made of intersecting grid wires 39. The grid wires 39 of the stripping grids 37 shown in the figures have a square cross-section and are each also twisted. This leads 10 tothat the edges of the grid wires 39 are aligned in different positions relative to the filament ends 5 to be stripped along the path of the grid wires 39 in the respective stripping grid 37. This promotes good cleaning of the filament ends 5 of a filament strand 2.15. Figure 12 illustrates a wire spacing 40 between two adjacent grid wires 39. The wire spacing 40 between two adjacent grid wires 39 can, for example, correspond to one to ten times the diameter 41 of the grid wires 39. The device 1 has a 20 drive device 42 for each filament wiper 36, with which the respective filament wiper 36 can be moved relative to the filament ends 5 to be suctioned, in order to deflect and wipe off the filament ends 5. The drive devices 42 are designed toThe filament wipers 36 move linearly in two spatial directions oriented perpendicular to each other and also rotate around a rotation axis 43 oriented in one direction of a longitudinal axis of the filament strand 2. The aforementioned relative movement for wiping the filament ends 5 of a processed filament strand 2 can also be generated by a positioning movement of the filament strand holders 14 and the 30 filament wipers 36. Thus, the positioning drives 2025 / 5736 BE2025 / 5736 23 15 of the filament strand holders 14 can be used to move the filament strand holders 14 and the filament strands 2 arranged thereon past the filament wipers 36. The device 1 described above is set up to carry out the procedure 5 described below for processing filament strands 2. It is intended thatA sheath 7 of a filament strand 2 is moved from a cover position 8 to a recessed position 9 on the filament strand 2 using the aforementioned wiper 6, thereby exposing the filament ends 5 of the filament strand 2 for 10 processing. Subsequently, the exposed filament ends 5 are ground and end-rounded in the grinding station 3 of the device 1 using the aforementioned grinding device 4. After grinding the filament ends 5, the sheath 7 is pushed back 15 into its cover position 8 using the aforementioned wiper 6. The wiper 6 is located in the area of ​​the puck cutting station 28. Before the sheath 7 is pushed back into its cover position 8,The previously ground filament ends 5, and thus also the bristle filaments of the filament strand 2, are vacuumed away. 20 To grind its filament ends 5, the filament strand 2 can be positioned with its filament ends 5 against one of the abrasives 18 and 19 of the grinding device 4 in at least two different feed positions. The feed of the filament ends 5 against the abrasives 18, 19 of the grinding device 4 can be carried out with the positioning drive 15 of the filament strand holder 14, which is responsible for 25 the vertical movement of the filament strand holder 14, on which the filament strand 2 to be processed is arranged. The feed of the filament strand 2 takes place in the direction of the axis of rotation 16, around which the filament strand holders 14 can be moved around the stand 1330 of the device 1. 2025 / 5736 BE2025 / 5736 24 The sheathing 7 is held in its recessed position 9 on the filament strand 2 by the fixing agent 10 on the filament strand holder 14 when grinding off the filament ends 5. This preventsthat the sheathing 7, through the movements transmitted to the bristle filaments of the filament strand 2 during the grinding of the filament ends 5, moves from its recessed position 9 into its covering position 8, thereby disrupting the grinding of the filament ends 5. The fixing agent 10 can also be used to reattach fanned-out bristle filaments of a filament strand 2 after the grinding of the filament ends 5 to the filament strand 2. 10 In both embodiments of the device 1 shown in the figures, the aperture 24 on the suction housing 22, which has been explained in more detail above, can also be used to attach fanned-out bristle filaments. After grinding off the free filament ends 5, a filament puck 30 is cut from the filament strand 2 by the cutting blade 31 of the cutting device 29 of the device 15 1. The puck height of the filament puck 30 to be cut off is determined by a distance between a cutting plane in which the cutting blade 31 is moved through the filament strand 2 when cutting off the filament puck 30.and the aforementioned receiving surface 34 on the puck receiving table 3520 of the device 1 is defined. When a filament puck 30 is separated, the filament strand 2 is supported by the support element 32 against a feed direction of the cutting knife 31 and also fixed by the wiper 6. In doing so, the wiper 6 grips the filament strand 2 with a higher force than when 25 stripping the casing 7. After a filament puck 30 is separated, the filament strand 2 is temporarily placed on the cutting knife 31 to hold the filament strand holder 14, on which the filament strand 2 is arranged.in the longitudinal direction of the filament strand 2 relative to the 30 filament strand 2. In this way, the 2025 / 5736 BE2025 / 5736 25 filament strand 2 can be grasped with the filament strand holder 14 and then fixed in its new relative position on the filament strand holder 14 using the clamping means 17 of the filament strand holder 14. After grinding the free filament ends 5 of a filament strand 2, the filament ends 5 and thus also the exposed 5 bristle filaments of the filament strand 2 are suctioned with one of the suction devices 27 of the device 1. During suction, the filament ends 5 are deflected by the filament wiper 36, which is positioned in the suction flow of the respective suction device 27, and wiped off at the filament wiper 36.to detach any particles possibly adhering to the 10 filament ends 5 and the bristle filaments and transfer them to the suction flow of the extraction device 27. For this purpose, the filament strand 2 with its free filament ends 5 is moved in a wiping motion against the filament wiper 36 and / or the filament wiper 36 is moved in a wiping motion against the filament strand 2. The extraction housing 24 of the grinding station 3 and the extraction devices 27 of the extraction stations 26 are connected to a common vacuum source 25. Via a valve device 44 between the vacuum source 25 and the extraction housing 24 and the 20 extraction devices 27, a vacuum flow generated by the vacuum source 35 can be individually regulated for the extraction housing 24 and each of the two extraction devices 27. Figure 4 shows the device 1 in a protective enclosure 44. The device 25 has two storage boxes 46 for cut filament pucks 30 adjacent to the puck cutting station 38. Each storage box 46 is divided into four compartments 47.which serve to hold filament pucks 30. Figure 4, with the device 130 located in the protective housing 45, illustrates that the storage boxes 46 extend with a removal area from the protective housing 45. This allows the removal of filament pucks 30 from the storage boxes 46 and, if necessary, also the removal of the storage boxes 46 without having to open the protective housing 45. The separated filament pucks 30 are sorted into the compartments 47 of the storage boxes 46 according to specified 5 sorting criteria. Figures 2 and 3 show one of the two filled storage boxes 46 in a detailed view. The view of,

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