Method and device for machining screwed-in brushes

Abstract

A method and device (1) for producing and machining screwed-in brushes (2). In the method and in the device, at least one grinding sleeve (4) is used to grind down free bristle ends (5) of a brush (2) to be machined and thus remove edges and/or burrs on the free bristle ends (5).

Claims

1. A method for machining screwed-in brushes (2), the method comprising: providing a clamping device (3) for the brush (2), providing an abrasive sleeve (4) configured to abrade free bristle ends (5) of the brush (2) clamped in the clamping device (3), providing a stabilizing sleeve (38), including a clamp of the clamping device that is configured for the clamping of the brush (2), the clamp is arranged adjacent to a plug-in opening (44) of the stabilizing sleeve (38), through which the brush (2) is introducible by a handle (37) thereof into the stabilizing sleeve (38), and the clamp comprises a clamping sleeve (43) that is movable relative to the stabilizing sleeve (38) into a clamping position by an adjusting force of an adjusting element (45), with the adjusting force being oriented into the clamping position, introducing the handle of the brush into the stabilizing sleeve (38) and supporting the handle therein and at least one holder for the stabilizing sleeve, wherein the stabilizing sleeve at a distal end thereof faces a set of bristles of the brush, clamping the brush (2) via moving the clamping sleeve (43) relative to the stabilizing sleeve (38) into the clamping position by the adjusting force of the adjusting element (45), and abrading free bristle ends (5) of the brush (2) with an abrasive sleeve (4).

2. The method as claimed in claim 1, further comprising before the abrading of the bristle ends (5), introducing the brush (2) at least with a set of bristles (6) thereof into the abrasive sleeve (4), and at least one of moving the abrasive sleeve (4) relative to the brush (2) or moving the brush (2) relative to the abrasive sleeve (4), in order to produce an abrasive movement.

3. The method as claimed in claim 2, further comprising rotating at least one of the brush (2) or the abrasive sleeve (4) about a longitudinal center axis of the brush (2) or of the abrasive sleeve (4).

4. The method as claimed in claim 3, further comprising moving at least one of the brush (2) or the abrasive sleeve (4) linearly or axially with respect to a longitudinal center axis of the at least one of the brush (2) or the abrasive sleeve (4).

5. The method as claimed in claim 3, further comprising the at least one of the brush (2) or the abrasive sleeve (4) being first rotated in a first direction of rotation and subsequently rotated in a second opposite direction of rotation.

6. The method as claimed in claim 1, further comprising machining the brush (2) successively by at least two of the abrasive sleeves (4).

7. A device (1) for machining screwed-in brushes (2), the device (1) comprising, at least one clamping device (3) for a brush (2), at least one abrasive sleeve (4) configured to abrade free bristle ends (5) of the brush (2) clamped in the at least one clamping device (3), and at least one stabilizing sleeve (38) with which a handle (37) of the brush (2) can be supported during the machining of the brush (2) and at least one holder for the at least one stabilizing sleeve, wherein the at least one stabilizing sleeve at a distal end thereof faces a set of bristles of the brush, the at least one stabilizing sleeve (38) includes a clamp of the at least one clamping device that is configured for the clamping of the brush (2), the clamp is arranged adjacent to a plug-in opening (44) of the at least one stabilizing sleeve (38), through which the brush (2) is introducible by the handle (37) thereof into the at least one stabilizing sleeve (38), and the clamp comprises a clamping sleeve (43) that is movable relative to one of the at least one stabilizing sleeve (38) into a clamping position by an adjusting force of an adjusting element (45), with the adjusting force being oriented into the clamping position.

8. The device as claimed in claim 7, wherein the at least one abrasive sleeve (4) is configured at least for receiving at least one set of bristles (6) of the brush (2), and at least one of the at least one clamping device (3) or the at least one abrasive sleeve (4), is configured to move in order to produce an abrasion movement for machining the free bristle ends (5) of the brush (2).

9. The device (1) as claimed in claim 8, wherein at least one of the at least one clamping device (3) or the at least one abrasive sleeve (4) is (a) rotatable about a longitudinal center axis of the brush (2), the at least one abrasive sleeve (4), or the at least one clamping device (3), and (b) movable linearly with respect to the longitudinal center axis of the brush (2), the at least one abrasive sleeve (4), or the at least one clamping device (3).

10. The device (1) as claimed in claim 9, further comprising a rotation drive (7) with which the at least one of the at least one abrasive sleeve (4) or the at least one clamping device (3) is set into rotation, and a linear drive (9) with which at least one of the at least one clamping device (3) or the at least one abrasive sleeve (4) is movable linearly or axially.

11. The device (1) as claimed in claim 7, further comprising a suction device (13) with at least one suction opening (14) which is assigned to at least one of the at least one abrasive sleeve (4) or to the at least one clamping device (3).

12. The device (1) as claimed in claim 7, further comprising a carousel machine (15) which includes a plurality of the clamping devices (3) revolving along a closed path (16), with the clamping devices (3) arranged on a common holding ring (17), said common holding ring being movable about an axis of rotation (19) of the device (1) by a carousel drive (18).

13. The device (1) as claimed in claim 7, wherein there are at least two different abrasive sleeves of the at least one abrasive sleeves (4).

14. The device (1) as claimed in claim 7, further comprising at least one of a cleaning device (20) for machined brushes (2), or a cleaning station (21) for the at least one clamping device (3).

15. The device (1) as claimed in claim 7, wherein the at least one abrasive sleeve (4) has an inner abrasive surface (23) that is at least one of provided or coated with an abrasive material.

16. The device (1) as claimed in claim 7, wherein the at least one abrasive sleeve (4) comprises abrasive block or of an abrasive paper wound to form a sleeve, or is sintered or 3D-printed.

17. The device (1) as claimed in claim 7, wherein the at least one abrasive sleeve (4) has at least one cross-sectional constriction (24) on an inner circumferential wall (25) thereof, and the cross-sectional constriction (24) runs helically or two or more cross-sectional constrictions (24) are arranged or formed at an axial distance from each other in the abrasive sleeve (4).

18. The device (1) as claimed in claim 17, wherein between the at least one cross-sectional constriction (24) and an inner circumferential wall (25) of the abrasive sleeve (4), said inner circumferential wall being adjacent to the cross-sectional constriction (24), at least one oblique surface (26) is formed which connects the at least one cross-sectional constriction (24) and the inner circumferential wall (25) to each other.

19. The device (1) as claimed in claim 7, wherein an inside diameter of the at least one abrasive sleeve (4) is smaller than an outside diameter of a set of bristles (6) of the brush (2) which is to be machined with the device (1).

20. The device (1) as claimed in claim 7, wherein the at least one abrasive sleeve (4) comprises a single-part abrasive sleeve (4), or the at least one abrasive sleeve (4) comprises a multi-part abrasive sleeve (4) including two or more partial sleeves (4a).

21. The device (1) as claimed in claim 7, further comprising a funnel plate (27) arranged between the at least one clamping device (3) and the at least one abrasive sleeve (4), the funnel plate (27) has an introducing cone (28) which tapers toward the at least one abrasive sleeve (4), and a longitudinal center axis of the introducing cone (28) is congruent with a longitudinal center axis of the abrasive sleeve (4) arranged therebehind.

22. The device (1) as claimed in claim 7, wherein the at least one abrasive sleeve (4) has at least one inner suction opening (29) which opens into the abrasive sleeve (4).

23. The device (1) as claimed in claim 7, further comprising at least one of an input device (30) or a removal device (31) for at least one of inputting or removing brushes (2).

24. The device (1) as claimed in claim 23, wherein at least one of the input device (30) or the removal device (31) is configured to simultaneously input or remove a plurality of brushes (2) within one working cycle.

25. The device (1) as claimed in claim 23, wherein at least one of the input device (30) is configured to be connected via at least one supply line (59) for brushes (2) to a station clamped upstream of the device (1), or the removal device (31) is configured to be connected via at least one supply line (59) for brushes (2) to a station clamped downstream of the device (1).

26. The device (1) as claimed in claim 7, wherein the clamping device (3) comprises the at least one holder (39) for the at least one stabilizing sleeve (38), wherein the at least one stabilizing sleeve at the distal end (40) thereof facing the set of bristles (6) of the brush (2) in the use position has an outer bevel (41) which forms an encircling supporting surface for bristle filaments (42) of the brush (2), said bristle filaments being arranged proximally in the set of bristles (6).

27. The device (1) as claimed in claim 26, wherein the at least one clamping device (3) comprises at least the holder (39) for the stabilizing sleeve (38), and at least one of an adjusting element (45) or a pressure transmission element (47) connected to the clamping sleeve (43) is arranged in or on the holder (39).

28. The device (1) as claimed in claim 26, comprising a roller machine which has a clamping block (48) which is rotatable about a rotation axis (R) and on which a plurality of the clamping devices (3) are arranged.

29. The device (1) as claimed in claim 26, wherein the at least one clamping device (3) has at least one rapid clamp on the holder (39).

30. The device (1) as claimed in claim 7, wherein the clamping sleeve (43) has at least one slot (43a), is arranged within the at least one stabilizing sleeve (38), or has the at least one slot and is arranged within the stabilizing sleeve, and the at least one stabilizing sleeve (38) has, in an interior thereof, a clamping bevel (46) for deforming the clamp, and the clamping bevel (46) is arranged adjacent to the plug-in opening (44) of the stabilizing sleeve (38).

31. The device (1) as claimed in claim 7, further comprising a monitoring device (52) configured to monitor at least one of an inputting, removal, or clamping of the at least one brush (2).

32. The device (1) as claimed in claim 7, further comprising a rapid clamping device (58) for the at least one abrasive sleeve (4).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Exemplary embodiments of the invention are described in more detail below with reference to the drawing. The invention is not restricted to the exemplary embodiments shown in the figures. Further exemplary embodiments of the invention emerge through a combination of the features of individual or a plurality of claims with one another and/or in a combination of individual or a plurality of features of the exemplary embodiments. In a greatly schematized illustration:

(2) FIG. 1 shows a perspective view of a device according to the invention for machining screwed-in brushes, wherein the device is designed as a carousel machine and has a multiplicity of individual abrasive sleeves and clamping devices for screwed-in brushes,

(3) FIG. 2 shows the detail marked by the rectangle A in FIG. 1 in an enlarged illustration,

(4) FIGS. 3 to 8 show perspective side views of different embodiments of partial sleeves, from which abrasive sleeves are composed which can be used on the device illustrated in FIGS. 1 and 2, wherein some of the partial sleeves illustrated have inner cross-sectional constrictions and/or suction openings which open into the interior of the respective partial sleeve,

(5) FIG. 9 shows a highly schematized sectional illustration of a further abrasive sleeve with inner cross-sectional constrictions and with a brush which is introduced into the abrasive sleeve and the handle of which is surrounded at least in sections by a stabilizing sleeve,

(6) FIG. 10 shows a perspective side view of a further embodiment of a clamping device for the clamping of a brush, wherein the clamping device has a stabilizing sleeve, in the interior of which an axially displaceable clamping sleeve is arranged,

(7) FIG. 11 shows a sectioned side view of the clamping device shown in FIG. 10, and

(8) FIG. 12 shows a device designed as what is referred to as a roller machine for machining screwed-in brushes in a perspective view with clamping devices as are shown in FIGS. 10 and 11.

DETAILED DESCRIPTION

(9) In the description below of various embodiments of the invention, elements which correspond in terms of their function obtain corresponding reference numbers even if the design or shaping differs.

(10) FIGS. 1, 2 and 9 and 12 each show at least parts of a device, denoted as a whole by 1, for machining screwed-in brushes. The brushes 2 illustrated in FIGS. 1, 2 and 9 and also 10 to 12 are referred to as interdental brushes 2.

(11) The device 1 has a plurality of clamping devices 3 for screwed-in brushes 2 and a plurality of abrasive sleeves 4 for abrading free bristle ends 5 of the brushes 2 clamped in the clamping devices 3. Each of the abrasive sleeves 4 is configured for receiving at least one set of bristles 6 of the brushes 2 and is composed of two partial sleeves 4a. Some embodiments of suitable abrasive sleeves 4 and partial sleeves 4a are illustrated in FIGS. 3 to 9 and 12.

(12) The device 1 is configured to move at least the abrasive sleeves 4 in order to produce an abrasion movement for machining the free bristle ends 5 of the brushes 2.

(13) The abrasive sleeves 4 are rotatable about a longitudinal center axis of the brush 2, which is intended to be machined with the respective abrasive sleeve 4, and about a longitudinal center axis of the respective abrasive sleeve 4. The respective clamping device 3 together with the brush 2 clamped thereon is movable linearly with respect to a longitudinal center axis of the respective brush 2 and also with respect to a longitudinal center axis of the abrasive sleeve 4. An abrasion movement can thereby be produced if required even by combining a rotating relative movement of the abrasive sleeve 4 with respect to the clamping device 3 with a linear relative movement of the clamping device 3 with respect to the abrasive sleeve 4.

(14) The device 1 has rotation drives 7 for the abrasive sleeves 4. Each abrasive sleeve 4 is in each case assigned a rotation drive 7. FIG. 1 clarifies that all of the rotation drives 7 are arranged on an adjustment device 8. The arrangement of the rotation drives 7 and of the abrasive sleeves 4 relative to the clamping devices 3 can be adapted with the adjustment device 8. The clamping devices 3 of the device 1 can be moved linearly or axially, i.e. raised and lowered, via a plurality of linear drives 9.

(15) Each of the linear drives 9 in each case has a drive motor 10 which is drive-connected to a rack 12 via a drive pinion 11. A rotational movement of the drive motor 10 of the respective linear drive 9 can be converted into a lifting movement of the clamping devices 3 via the drive pinion 11 and the rack 12. For this purpose, the racks 12 are connected to a movable guide ring 12a which, in more precise terms, is in the form here of a ring segment which extends over an angular range of approximately 300 degrees. The guide ring 12a has a guide groove 12c on its circumferential side 12b. The clamping devices 3 are equipped with guide rollers 3a. The clamping devices 3 run with said guide rollers 3a through the guide groove 12c. Via the guide rollers 3a arranged in the guide groove 12c, a lifting movement of the guide ring 12a that is caused by the linear drives 9 can be transmitted to the clamping devices 3 and ultimately also to the brushes 2 clamped therein. The clamping devices 3 running in the guide groove 12c are therefore raised or lowered together with the guide ring 12a in order to position the brushes 2 in the abrasive sleeves 4 and optionally further machining stations of the device 1.

(16) According to FIG. 1, the device 1 has a suction device 13 with suction openings 14. Of said suction openings 14, a suction opening 14 is illustrated in highly schematized form in FIG. 1. Each clamping device 3 and/or each abrasive sleeve 4 can in each case be assigned one such suction opening 14 in order to reliably remove abrasion dust occurring during the abrading of the brushes 2. Advantageously, a sufficient number of such suction openings 14 are provided here in order to be able to grasp all of the abrasive sleeves 4 and/or clamping devices 3 with the suction.

(17) According to FIG. 1, the device 1 is designed as a carousel machine 15. The device 1 has a plurality of clamping devices 3 revolving along a closed path 16. The clamping devices 3 are arranged in a common holding ring 17 of the device 1 and are held in a manner guided in the guide ring 12a which has already been described previously. The holding ring 17 is rotated about an axis of rotation 19 of the device 1 by a carousel drive 18, but is neither raised nor lowered. The arrow Pf1 indicates the direction of rotation of the holding ring 17. The carousel drive 18 is connected to the axis of rotation 19 of the device 1 via a belt 18a. The axis of rotation 19, for its part, is connected to the holding ring 17 for rotation therewith, and therefore a rotation of the axis of rotation 19 can be transmitted to the holding ring 17 and to the clamping devices 3 arranged thereon. The clamping devices 3 which are arranged on the holding ring 17 can thereby revolve together with the holding ring 17 on the closed path 16 and can be supplied successively to the individual machining stations, in particular to the abrasive sleeves 4 of the device 1.

(18) The holding ring 17 has a respective receptacle 17a for each clamping device 3. In these receptacles 17a, the clamping devices 3 are indeed guided in a longitudinally displaceable manner in the direction of a longitudinal axis of the receptacles 17a, but in a manner secured against rotation.

(19) In addition, the device 1 has a cleaning device 20. The cleaning device 20 is designed as a compressed air cleaning device and serves to clean machined brushes 2 after they have been machined by abrasion.

(20) Apart from the cleaning device 20, the device 1 also has a cleaning station 21 for the clamping devices 3 of the device 1. In said cleaning station 21, collet chucks 22 of the individual clamping devices 3 can be cleaned after machining of brushes 2 is finished and can be prepared for a subsequent machining cycle.

(21) FIGS. 3 to 8 show different embodiments of divided abrasive sleeves 4 which can be used on the device 1 illustrated in FIGS. 1 and 2. For reasons of better clarity, for each of the abrasive sleeves 4 illustrated in FIGS. 3 to 8 in each case only one of two partial sleeves 4a, of which each abrasive sleeve 4 consists, is illustrated. Each of the illustrated abrasive sleeves 4 in each case has an inner abrasive surface 23 which is provided or is coated with an abrasive material.

(22) The abrasive sleeves 4 can be comprised of different materials and can be produced in different methods. For example, in one embodiment of such an abrasive sleeve 4 it is thus provided that the latter consists of a cast abrasive block. However, it is also possible to produce an abrasive sleeve 4 from an abrasive paper wound to form a sleeve. However, in particular what are referred to as single-part abrasive sleeves 4 can also be produced by generative production methods. It is, for example, conceivable in this case to sinter the abrasive sleeves 4 or to produce them by 3D printing.

(23) The abrasive sleeves 4 illustrated in FIGS. 5 to 9 each have a plurality of cross-sectional constrictions 24 on their inner circumferential walls 25. These cross-sectional constrictions 24 can be present, for example, in the form of a collar or an obstacle. In the case of the abrasive sleeves 4 illustrated in FIGS. 5 to 8, cross-sectional constrictions 24 are provided which are arranged at an axial distance from one another in the abrasive sleeve 4 in a manner distributed uniformly along the longitudinal center axis of the respective abrasive sleeve 4.

(24) The cross-sectional constrictions 4 are flanked on both sides by a respective oblique surface 26 which runs between an inner circumferential wall 25 of the abrasive sleeve 4 that is adjacent to the cross-sectional constriction 24 and the cross-sectional constriction 24. At least an average inside diameter of the abrasive sleeves 4 illustrated in FIGS. 3 to 8 is smaller than an outside diameter of a set of bristles 6 of the brushes 2 to be machined with the device 1.

(25) The abrasive sleeves 4 illustrated in FIGS. 3 to 8 are what are referred to as two-part abrasive sleeves 4 which consist of two partial sleeves 4a produced separately from each other. Each of the partial sleeves 4a of the abrasive sleeves 4 illustrated in FIGS. 3 to 8 can be, for example, first of all milled and then assembled together with a second partial sleeve 4a to form an abrasive sleeve 4.

(26) The abrasive sleeves 4 illustrated in FIG. 1 each consist of two such partial sleeves 4a. In addition, the device 1 has a funnel plate 27. This funnel plate 27 is of annular design and is arranged between the clamping devices 3 and the abrasive sleeves 4. The funnel plate 27 comprises a respective introducing cone 28 at least for each abrasive sleeve 4 into which a brush 2 is intended to be introduced for the machining. Each of the introducing cones 28 tapers toward the abrasive sleeve 4 assigned thereto. This makes it easier to introduce the brushes 2 into the abrasive sleeves 4. A longitudinal center axis of the respective introducing cone 28 is congruent here with a longitudinal center axis of the abrasive sleeve 4 which is assigned thereto and is arranged behind the introducing cone 28.

(27) The abrasive sleeves 4 illustrated in FIGS. 4, 6 and 8 each have between two and four inner suction openings 29 which open into the interior of the abrasive sleeves 4. The suction openings 29 are arranged here in the interior of the abrasive sleeves 4 in such a manner that they can as far as possible grasp the entire abrasive surface 23 with the suction.

(28) The device 1 also comprises an input device 30 and a removal device 31 in order to be able to insert brushes 2 comfortably into the device 1 and in particular into the clamping devices 3 of the device 1 and also to be able to remove them again from the clamping devices 3 after the brushes 2 have been machined.

(29) For the removal of brushes 2 from the clamping devices 3, the removal device 31 actuates an opening pin 32 which is connected to the respective collet chuck 22. By actuation of the opening pin 32, the respective collet chuck 22 of the clamping device 3 is opened and the brush 2 clamped therein can be removed from the clamping device 3. In order to operate the opening pins 32, openers 36 are provided which are arranged on a holder 35 of the removal device 31, actuate the opening pins 32 and therefore open the collet chucks 22 of the clamping devices 3.

(30) The device 1 has a guide segment 33 in the region of the input device 30 and of the removal device 31. The guide segment 33 is fixed on a framework 34 of the device 1 and is unchangeable in its position. The guide segment 33—like the guide ring 12a—has a guide groove 33a into which the clamping devices 3 run with their guide rollers 3a when they pass through the holding ring 17 into the corresponding position on the device 1.

(31) FIG. 9 shows a further embodiment of an abrasive sleeve 4. The length of the abrasive surface 23 of said abrasive sleeve 4, as can be measured in the plugging-in direction of the brush 2, is shorter than the length of the set of bristles 6 of the brush 2, as can be measured in the plugging-in direction of the brush 2.

(32) In order to machine the brush 2 with said abrasive sleeve 4, the brush 2 can be pushed once or repeatedly through the abrasive sleeve 4. For this purpose, it is advantageous to grasp the brush 2 as far to the rear as possible on its handle 37. According to FIG. 9, the collet chuck 22 of the clamping device 3 of the device 1 therefore also attaches to the proximal end of the handle 37 of the brush 2.

(33) A comparatively large distance which can impair the introducing of the brush 2 into the abrasive sleeve 4 arises between the collet chuck 22 and the set of bristles 6 of the brush 2. The clamping device 3 of the device 1, only illustrated in sections in FIG. 9, therefore has a stabilizing sleeve 38. The latter surrounds the handle 37 of the brush 2 in a supporting manner during the machining of the set of bristles 6 in the abrasive sleeve 4 and thereby stabilizes the brush 2.

(34) The device 1 illustrated in FIG. 9 is furthermore equipped with a holder 39. This holder 39 is an element of the clamping device 3 and holds the stabilizing sleeve 38 during the machining of the brush 2.

(35) FIG. 9 furthermore shows that the stabilizing sleeve 38 has an outer bevel 41 at its distal end 40 which faces the set of bristles 6 of the brush 2. This bevel 41 forms an encircling supporting surface against which at least the bristle filaments 42 arranged proximally in the set of bristles 6 can be placed during the introduction of the brush 2 through the introducing cone 28 of the funnel plate 27 into the abrasive sleeve 4.

(36) The method described below can be carried out on the device 1 described above:

(37) It is provided in the method for machining screwed-in brushes 2 that free bristle ends 5 of the brush 2 are abraded with an abrasive sleeve 4. This is undertaken with the aim of rounding off free bristle ends 5 of the brush 2. For this purpose, a screwed-in brush 2 is introduced with at least one section, namely with its set of bristles 6, into the abrasive sleeve 4.

(38) The abrasive sleeve 4 is then moved relative to the brush 2 and optionally the brush 2 is also moved relative to the abrasive sleeve 4, in order to produce an abrasion movement.

(39) While the abrasive sleeve 4 is rotated about a longitudinal center axis of the brush 2 and also about a longitudinal center axis of the abrasive sleeve 4, wherein the longitudinal center axis of the brush 2 and the longitudinal center axis of the abrasive sleeve 4 are congruent when the abrasive sleeve 4 and brush 2 are in the abrasion position, the brush 2 is moved relative to the abrasive sleeve linearly or axially with respect to a longitudinal center axis of the brush 2 and also with respect to a longitudinal center axis of the abrasive sleeve 4.

(40) The linear or axial relative movement is combined here with the rotating relative movement of brush 2 and abrasive sleeve 4. In one embodiment of the method, the abrasive sleeve 4 is rotated relative to the brush 2 first of all in a first direction of rotation and subsequently in a second opposite direction of rotation in order to abrade and to round off the free bristle ends 5 of the brush 2. In order to machine the bristle ends 5 of the brush 2 by abrasion, for example successively in different abrasive steps, the brush 2 can be successively supplied to at least two different abrasive sleeves 4 and machined by the latter.

(41) FIGS. 10 and 11 show a variant of a clamping device 3 which can likewise be used on the devices 1 shown in FIGS. 1 and 12.

(42) This type of the clamping device 3 likewise has a stabilizing sleeve 38 with which a handle 37 of a brush 2 can be supported on or at the device 1 during the machining of the brush 2. The stabilizing sleeve 38 comprises a clamping means 43, by which the stabilizing sleeve 38 is at least indirectly configured for clamping a brush 2. The clamping means 43 is arranged adjacent to a plug-in opening 44 of the stabilizing sleeve 38 through which the brush 2 can be introduced with its handle 37 into the stabilizing sleeve 38. In order to facilitate introduction of a handle 37 of a brush 2, the stabilizing sleeve 38 has an introducing cone 44a.

(43) As in the case of the embodiment of a clamping device 3 from FIG. 9, the stabilizing sleeve 38 of the clamping device 3 according to FIGS. 10 and 11 also has an outer bevel 41 at its distal end 40 which faces the set of bristles 6 of the brush 2. This bevel 41 forms an encircling supporting surface against which at least the bristle filaments of the brush 2 that are arranged proximally in the set of bristles 6 can be placed.

(44) The clamping means 43 of the stabilizing sleeve 38 shown in FIGS. 10 and 11 is a clamping sleeve 43. The clamping sleeve 43 can be moved relative to the stabilizing sleeve 38 from a starting position into a clamping position. The sectional illustration of the clamping device 3 from FIG. 11 shows the clamping sleeve 43 in its clamping position in the interior of the stabilizing sleeve 38. The clamping sleeve 43 is moved into the clamping position shown in FIG. 11 and is also held there by an adjusting force of an adjusting element 45, which is designed here as a compression spring 45, said adjusting force being oriented into the clamping position.

(45) The clamping sleeve 43 has a slot 43a, i.e. is slotted, and can thereby reduce its clear inside diameter by radially oriented pressure in order to securely clamp a handle 37 of a brush 2. In addition, the clamping sleeve 43, as already mentioned previously, is arranged within the stabilizing sleeve 38.

(46) The stabilizing sleeve 38 has, in its interior, a clamping bevel 46 for deforming the clamping sleeve 43. The clamping bevel 46 is arranged adjacent to the plug-in opening 44, already mentioned previously, of the stabilizing sleeve 38. If the clamping sleeve 43 is moved against the clamping bevel 46 by the compression spring 45, the adjusting force of the compression spring 45 is deflected radially inward onto the clamping sleeve 43. The clamping sleeve 43 is thereby deformed with its clear inside diameter being reduced, and a handle 37, which is arranged therein, of a brush 2 is firmly clamped.

(47) The clamping device 3 shown in FIGS. 10 and 11 has a holder 39 to which the stabilizing sleeve 38 is fastened. The adjusting element 45, namely the compression spring 45, and a pressure transmission element 47 connected to the clamping sleeve 43 are arranged in the holder 39. The pressure transmission element 47 is a pressure plate which is connected integrally to the clamping sleeve 43 and against which the compression spring 45 acts. The compression spring 45 transmits its adjusting force, which is oriented into the clamping position, to the clamping sleeve 43 via the pressure plate 47.

(48) FIG. 12 shows a further embodiment of a device 1 according to the invention which has a total of eight abrasive sleeves 4 and is configured for carrying out the method according to the invention. The embodiment of the device 1 that is shown in FIG. 12 is designed as what is referred to as a roller machine which has a clamping block 48 which is rotatable about a rotation axis R. A plurality of clamping devices 3 are arranged on said clamping block 48. The clamping devices 3 of the device 1 from FIG. 12 that is designed as a roller machine are the same clamping devices 3 as are shown in FIGS. 10 and 11.

(49) The clamping devices 3 shown in FIGS. 10 to 12 each have a plurality of holes 39b or bores for rapid clamping means 49 on their holder 39, more precisely on a baseplate 39a of their holder 39. With the aid of the rapid clamping means 49, the clamping devices 3 can be rapidly released from the clamping block 48 and ex-changed when required.

(50) The clamping block 48 has a total of four clamping sides 50. A respective carrier plate 51 is arranged on each of the clamping sides 50. Each of the carrier plates 51 is fastened in turn to the clamping block 48 by rapid clamping means 49. A respective carrier plate 51 is fastened to each of the therefore total of four clamping sides 50 of the clamping block 48. Each of the carrier plates 51 carries a total of four clamping devices 3, and therefore the device 1 illustrated in FIG. 12 has a total of 16 clamping devices 3 for clamping a total of 16 brushes 2.

(51) The clamping block 48 can be rotated about the rotation axis R of the clamping block 48 with the aid of a drive 18, which is connected to the clamping block 48 via a belt 18a, in order to be able to supply the total of four clamping sides 50 with the clamping devices 3 arranged thereon to the total of four stations of the device 1.

(52) The input device 30 of the device 1 shown in FIG. 12 is configured to equip the in each case four clamping devices 3, which are in the input position, successively or sequentially with brushes 2 which are to be machined. In contrast thereto, the removal device 31 of the device 1 shown in FIG. 12 is configured to remove the four brushes 2, which are clamped to the four clamping devices 3 in the removal position, from the device 1 simultaneously. The machined brushes 2 can therefore be unloaded particularly rapidly.

(53) The input device 30 has a pusher 55. The pusher 55 is used to act upon the pressure transmission element 47 and thus to move the clamping sleeve 43 from its clamping position into its starting position in order to introduce a handle 37 of a brush 2 into the stabilizing sleeve 38. For this purpose, the holder 39 of the clamping device 3 has an opening 56 from which the pressure transmission element 47 protrudes when the clamping sleeve 43 is in the clamping position. In this way, the pressure transmission element 47, although it is at least partially arranged within the holder 39, is accessible from the outside for the pusher 55 of the input device 30.

(54) With a compressive force of the pusher 55, the adjusting force of the adjusting element 45 acting on the pressure transmission element 47 is overcome and the clamping sleeve 43 is moved out of its clamping position. If the brush 2 is introduced with its handle 37 into the stabilizing sleeve 38, the pusher 55 can be pulled back, as a result of which the adjusting element/the compression spring 45 is relaxed and pushes the clamping sleeve 43 back into its clamping position. The result is that the brush 2 is clamped via its handle 37 to the clamping device 3 with the aid of the clamping sleeve 43 arranged in the stabilizing sleeve 38.

(55) The removal device 31 of the device 1 shown in FIG. 12 has a plurality of comparable pushers 55. The pushers 55 are used to open the clamping devices 3 which are in the removal position, i.e. to move the clamping sleeves 43 out of their clamping positions, in order to remove the brushes 2 clamped in the clamping devices 3.

(56) The device 1 shown in FIG. 12 furthermore has a monitoring device 52. The monitoring device 52 has two cameras 53, of which one camera 53 is assigned to the input device 30 and another camera 53 is assigned to the removal device 31.

(57) The camera 53 of the monitoring device 52 that is assigned to the input device 30 serves to monitor the inputting and correct clamping of the brushes 2 into/at the clamping devices 3 in the input position.

(58) The camera 53 of the monitoring device 52 that is assigned to the removal device 31 is used to check the removal of the brushes 2 from the clamping devices 3 in the removal position. With the aid of a control unit 54 of the device 1 shown in FIG. 12, the device 1 is furthermore configured to control or to regulate the machining of the brushes 2 even depending on the states determined by the monitoring device 52 with the aid of its two cameras 53.

(59) The device 1 shown in FIG. 12 has two abrasion stations 57 in which in each case four abrasive sleeves 4 are assembled. Each abrasive sleeve 4 consists of two partial sleeves 4a, as have already been described in detail further above. Each of the total of eight abrasive sleeves 4 of the device 1 illustrated in FIG. 12 is in each case assigned a rotation drive 7. In a variant of a device 1 that is not illustrated in the figures, a plurality of abrasive sleeves 4 can also be driven by a rotation drive 7.

(60) The abrasion stations 57 each have a rapid clamping device 58 for each of their abrasive sleeves 4. With the aid of the rapid clamping devices 58, the abrasive sleeves 4 can be changed rapidly when required and optionally even without the use of a tool.

(61) The input device 30 is connected via a supply line 59 in the form of a supply tube 59 for brushes 2 to a machine, which is mounted upstream of the device 1, for producing brushes 2. Brushes 2 can be supplied to the input device 30 and therefore to the device 1 by the supply tube 59. It is possible here to transport the brushes 2 by the supply tube 59 from the upstream machine to the input device 30 and thus to the device 1 by positive and/or negative pressure.

(62) The removal device 31 is connected via a total of four supply lines 59, which are likewise designed as supply tubes 59, to a further processing machine mounted downstream of the device 1. Brushes 2 machined on the device 1 can be transported via the supply tubes 59 of the removal device 31 to the further processing machine mounted downstream of the device 1. Positive and/or negative pressure and/or compressed air can also be used here for transporting the brushes 2.

(63) The invention is concerned with improvements in the technical field of producing and machining screwed-in brushes 2. To this end, the method and the device 1 are proposed. An abrasive sleeve 4 is used both in the method and in the device in order to abrade free bristle ends 5 of the brush 2 and thus to remove edges and/or burrs present at the free bristle ends 5.

LIST OF REFERENCE SIGNS

(64) 1 Device 2 Brush 3 Clamping device 3a Guide roller 4 Abrasive sleeve 4a Partial sleeve 5 Free bristle ends 6 Set of bristles 7 Rotation drive 8 Adjustment device 9 Linear drive 10 Drive motor 11 Drive pinion 12 Rack 12a Guide ring 12b Circumferential side of 12a 12c Guide groove 13 Suction device 14 Suction opening 15 Carousel machine 16 Closed path 17 Holding ring 17a Receptacles for 3 on 17 18 Carousel drive/drive 18a Belt 19 Axis of rotation 20 Cleaning device 21 Cleaning station 22 Collet chuck 23 Abrasive surface 24 Cross-sectional constriction 25 Inner circumferential wall 26 Oblique surface 27 Funnel plate 28 Introducing cone 29 Inner suction opening in 4 30 Input device 31 Removal device 32 Opening pin 33 Guide segment 33a Guide groove in 33 34 Framework 35 Holder 36 Opener 37 Handle of 2 38 Stabilizing sleeve 39 Holder for 38 39a Baseplate of 39 39b Hole in 39a 40 Distal end of 38 41 Bevel on 38 42 Proximal bristle filaments 43 Clamping means/clamping sleeve 43a Slot in 43 44 Plug-in opening 44a Introducing cone on 38 45 Adjusting element/compression spring 46 Clamping bevel 47 Pressure transmission element/pressure plate 48 Clamping block 49 Rapid clamping means 50 Clamping side 51 Carrier plate 52 Monitoring device 53 Camera 54 Control unit 55 Pusher of 30 56 Opening in 38 57 Abrasion station 58 Rapid clamping device 59 Supply line/supply tube