TW202304345A - Method and device for fastening bristles in a bristle carrier - Google Patents

Abstract

A method for anchorless fastening of at least one bristle in an assigned opening, in the form of a blind hole, in a bristle carrier made of plastic as part of a subsequent brush, which has a front side from which the opening into the bristle carrier extends, wherein the at least one bristle has a thickened fastening end. After inserting the at least one bristle in the opening from the front side of the bristle carrier, wherein an impact pulse is exerted on part of the circumference or the whole circumference of the front rim of the opening, the rim is plastically deformed. The present invention further relates to a corresponding device.

Description

Method and device for securing bristles in a bristle carrier

The invention relates to a method for fastening at least one bristle without an anchor in an associated opening formed as a blind hole in a bristle carrier made of plastic as part of a later brush and a corresponding installation.

Such a bristle carrier has a front side from which openings extend into the bristle carrier, at least one bristle having a thickened fastening end.

In the meantime, there are new methods for fastening bristles without anchors in blind holes of the bristle carrier. According to one method, the bristles are inserted into the storage bin. Such that the silo has the same hole pattern as the bristle carrier. Firstly by means of the thickened ends, the magazine pushes the bristles into the blind holes. The magazine is heated on the front side and eventually contacts the front side of the bristle carrier and the edge of the opening is shaped due to the temperature and pressure. Another method provides for accommodating the bristles in a sonotrode and shaping the edge of the opening with the sonotrode.

The object of the present invention is to provide a method and a device with which the cycle time can be further increased.

The method according to the invention is characterized by the following steps:

At least one bristle with a thickened fastening end is first pushed into the opening from the front side of the bristle carrier, wherein the bristle carrier has an ambient temperature,

applying a shock pulse by means of a deformation tool to part or all of the circumference of the edge of the front face of the opening delimiting the mouth of the front face of the opening, and

In the case of reducing the cross-section of the opening only at the mouth and not in the end region on the bottom side of the opening, the edge is plastically deformed by the impact pulse to a smaller cross-section than the thickened fixed end .

The method according to the invention does not provide for heating of the bristle carrier, since said bristle carrier deforms at ambient temperature. It is therefore no longer necessary to cool the bristle carrier. Furthermore, it has been assumed so far that the plastic can be deformed plastically by high pressure and a longer exposure time, but this would require longer cycle times than when heating and compressing the bristle carrier. However, it has now been surprisingly found that only the edge section of the opening in the region close to the front side can be deformed in a targeted manner by short impact pulses, which makes extremely short cycle times possible. The entire front side is also not shaped, but only the region of the edge of the opening, ie the region adjoining the opening on the front side. It is important that the walls of the entire blind hole are not deformed. Rather, the bottom section of the blind hole also has at least a section of lateral play relative to the thickened end, ie there are at most few contact points in order not to change the orientation of the bristles of the bristles or of the bristle bundles. This results in a significantly simplified tool compared to a sonotrode. In the case of a sonotrode, the sonotrode must have a closed, surrounding front face in order to be able to provide good deformation results, but this requires insertion of the bristles from the front end, thus resulting in less flexibility when filling.

The brush body is made of thermoplastic material, especially polypropylene or PET (Polyethylene Terephthalate, polyethylene terephthalate). It has been found that especially recycled PET is advantageously shaped by new methods and new devices, since this recycled material no longer fully has the properties of a "virgin material". Due to the absence of heating of the recycled material, the resulting brushes have excellent product properties, especially the precision of the formed areas and the pull-out force of the bristles.

According to one embodiment, the entire brush is made of the same material, for example polypropylene or PET, but in particular recycled PET. As a result of this measure in relation to the lack of heating, the material and the individual components retain their original properties. No compromises are therefore sought with respect to the heating temperature in order, for example, to be able to achieve an easy formability of the bristle carrier without causing negative properties of the fine bristles. As a side effect from this, brushes are able to be recycled by type, Because it is not made of plastic compound and does not use metal anchors.

Of course, the edge of the opening does not have to be a circular ring, since all hole shapes (elongated, curved, L-shaped, X-shaped, etc.) can be processed by the method according to the invention and the device according to the invention.

With the method according to the invention, it is irrelevant whether the bristles are inserted into the shaping tool from the front, from the side or from the rear. The deformation tool also does not have to be a circumferentially closed tube, multiple, for example rod-shaped, deformation tools can also deform the edge of the front in sections.

The size of the shock pulse depends on the mass to be deformed, which in turn depends to a large extent on the size of the hole.

The deformation tool does not necessarily have to hit the front face vertically, but can also hit the front face obliquely.

Furthermore, the deformation tool does not necessarily have to follow a linear path, but can also follow a sloped or curved path, such as a circular segment path.

Finally, the deformation tool does not have to move parallel to the longitudinal axis of the bristles or bristle tufts, but can be inclined thereto or extend at a slight angle.

The impact pulse can be applied to the bristle carrier with an impact time of less than 250 milliseconds, in particular less than 50 milliseconds, ie the impact time is the contact time of the deforming tool on the bristle carrier.

Advantageously, as found in tests, the duration of action is at least 3 milliseconds.

If a plurality of openings are provided in the brush, the openings are for example individually equipped with at least one bristle associated therewith in turn, ie hole by hole. Shock pulses are therefore used very specifically and point by point.

The deformation tool itself is also able to fill any openings and plastically deforms to hold the bristles in the openings. This can be carried out in one operation: the deformation tool with the bristles protruding in the direction of motion pushes the bristle end or the end of the bristle bundle into the opening and tightens The front side adjoining this end then hits the front side of the bristle carrier.

As an alternative thereto, there is a separate tool which first inserts the bristles into the opening and only then the deformation tool comes into play.

It is advantageous to use a tubular forming tool in the contact area with the bristle carrier in order to deform the edge in a closed circumferential manner. Alternatively, a forming tool is used which has a plurality of spaced apart tappets which deform the edge in sections. The latter option provides, for example, a point-by-point shaping or a ring-segment-shaped shaping, wherein the shaped segments are spaced apart from each other, similar to dashed or dotted lines.

As an alternative to hole-to-hole filling and sequential shaping, the deformation tool can have a plurality of receptacles for the bristles and simultaneously push the bristles into the associated openings and allow the edges of the openings to be plastically deformed by impact pulses. Alternatively to this, it might even be possible to fill all openings with one tool and then deform the edges with the same or another tool.

In this case, in particular a deformation tool is used which has a plurality of annular or ring-segment-shaped frontal extensions, wherein each extension is associated with an opening and the extensions make the edge of the frontal side of the gate at least sectionally Geoplastic deformation. It is therefore ruled out that the entire front side of the bristle carrier becomes and must be formed as a contact surface.

The deformation tool can strike the bristle carrier perpendicularly to the mouth cross section, or the deformation tool can have a plurality of spaced apart tappets which are inclined from the lateral exterior towards the edge and simultaneously strike inwards against the bristle carrier. Here, a plurality of tappets push the material obliquely downwards and against each other, ie into the opening in the region of its mouth.

Optionally, a bristle carrier is used with a front face which can be flat or convexly curved. In this case, the opening runs obliquely to a tangent on the front side in the area of the opening, wherein the front side has a planar contact surface adjoining the opening, which is vertical or at an angle of 70 to 90° relative to the center of the opening. The axis is stretched, wherein the deformation tool hits the contact surface. This option makes it possible to fix the bristles or bristle bundles in the bristle carrier obliquely to the front without risking the bristles or bristle bundles being bent or tilted during shaping.

A variant of the invention provides that the shaping tool has a planar front, with which it hits the bristle carrier and/or tapers conically at the front, or has a conical recess on the end side, so that The recess forms a receptacle for at least one bristle.

The deformation tool acquires its kinetic energy and releases it during deformation, for example via a drive mechanism or drive mass set in motion, in particular via a flywheel. Alternatively or in combination with a drive motor, the deformation tool or the intervening drive mechanism is driven by a servomotor or a cam.

If the deforming tool has a contact part placed on the front side and a striking part which strikes against the contact part in order to drive said contact part into the bristle carrier, the moving part does not directly hit the plastic. By means of this concept, the shape of the deformed edge can be predetermined very well.

The deformation tool should impact 0.2-3mm deep into the front, where the plastic can also rebound slightly.

As already mentioned, at least one bristle can first be introduced into the opening by means of a delivery tool and then anchored in the brush body by means of a deformation tool.

The above-mentioned object is also achieved by a device for producing a brush and carrying out the method according to the invention, said device having a holding device for a bristle carrier against which the bristle carrier rests on the rear; and a deformation A tool is designed to hit the front side of the bristle carrier and deform the front side.

It should be emphasized that all the features mentioned above can also be used in the device according to the invention and can be implemented there, and conversely, the following features of the device can also be used in the method.

Thus, as mentioned, for example, a delivery tool is provided which pushes the bristles into their openings, which is not part of the deformation tool.

The deformation tool can have a contact part placed on the front and a striking part which strikes against the contact part in order to be able to push the contact part into the bristle carrier.

The opening can have a center axis which runs obliquely to the tangent of the front side in the region of the opening, which can be flat or convex, wherein the front side has a flat contact surface adjoining the opening. , the contact surface extends at an angle of 70 to 90° relative to the central axis of the opening, wherein the deformation tool can strike the contact surface.

In order to enable a lateral transport of the bristles into the shaping tool, the shaping tool can be divided. For this purpose, a bristle feed is provided that enters the forming tool from the side.

10: Bristle carrier

12: opening

14:Bristle bundle

16:Drilling tool

18,31: Front

20: Opening edge

22: Inner side of the wall

24:Thickened fixed end

26: Morph Tool

28:Accommodating Department

29: Bottom

32: Holding device

36: contraction part

38: Concave

40: end area

42:Bristle storage bin

44: Separation device

46: Heating device

50: Tappet

52: Slit

60: Conveyor

70: Extension

71: Cone

72: Groove

74: rounded part

76: flywheel

78:Slider

80: contact part

82: Impact part

90: Concave contact surface

100: Bristle delivery device

S: Depth

Further characteristics and advantages of the invention emerge from the following description and the drawings referred to below. Shown in the diagram:

Figure 1 shows a view of the bristle carrier as part of a brush made later with a drilling tool;

Fig. 2 shows that according to the method according to the invention the bristle bundle is pushed and fixed in the opening of the bristle carrier;

Figure 3 shows a variant of a deformation tool as part of the device according to the invention;

Figure 4 shows an enlarged view of the deformation tool as part of the method according to the invention and the device according to the invention as it impinges on the bristle carrier;

Figure 5 shows a sectional view through the enlarged bristle carrier and the bristle bundle fixed thereon;

FIG. 6 shows a variant of the device according to the invention for carrying out the method according to the invention;

FIG. 7 shows another variant of a deformation tool as part of the device according to the invention;

Figure 8 shows a perspective view of a bristle carrier with obliquely running openings;

FIG. 9 shows a sectional view through the bristle carrier according to FIG. 8 with pushed-in bristle tufts;

Figure 10 shows a sectional view through a variant of a deformation tool that can be used in the present invention;

Figure 11 shows a sectional view through another variant of the deformation tool;

Figure 12 shows an additional variant of the deformation tool;

Figure 13 shows a deformation tool having a plurality of spaced apart tappets which together form a deformation tool;

Figure 14 shows a sectional view of another variant of the device according to the invention with a flywheel drive; and

FIG. 15 shows a further variant of the device according to the invention with a contact part and an impact part which together form a deformation tool.

FIG. 1 shows a bristle carrier 10 which is part of the finished brush. The bristle carrier 10 is made of thermoplastic, especially polypropylene or new or recycled PET, and has a plurality of openings 12 into which one or more bristles, that is to say also bristle bundles 14 (see FIG. 2 ), are inserted. And it can be fastened in the bristle carrier 10 without anchors.

According to one embodiment, the entire brush is made of the same material, for example polypropylene or PET, but in particular recycled PET.

The later brush can be any type of brush, it can be a household brush, a toothbrush, etc. The bristle carrier 10, for example, can also be the entire bristle carrier or a part of the bristle carrier, such as a small plate with bristle bundles prepared later, which is combined with the rest of the bristle body, for example by overmolding, welding, gluing Wait for the combination.

The openings 12 in the bristle carrier 10 are produced by drilling, as indicated symbolically by the shown drilling tool 16 , or when the bristle carrier 10 is injection molded.

The opening 12 is in particular a blind hole.

A further feature is that the opening 12 has a cylindrical design up to the base, ie has no undercuts or the like.

The opening starts from the front side 18 of the bristle carrier 10 and the mouth of the opening is surrounded on the front side 18 by an opening edge 20 which annularly surrounds the opening 12 on the front side 18 .

The opening 12 itself is delimited by the inner side 22 of the wall delimiting the opening 12 .

In the embodiment according to FIG. 1 , the opening 12 runs at right angles to the front face 18 , but can also run obliquely thereto (see FIGS. 8 and 9 ).

At least one bristle or bristle bundle 14 is inserted into the corresponding opening 12 and fixed therein, wherein at least one bristle or bristle bundle has a thickened fastening end 24 .

This thickened fixed end 24 is produced as follows: the single or multiple bristles of the bristle bundle are heated and melted together so that a plug or a type of ball made of plastic material is formed, thicker in cross-section than the individual bristles, Or if the bristle bundle 14 is inserted into the bristle carrier 10 , its cross-section is thicker than the cross-section of the bristle bundle 14 . In the case of the bristle bundle 14 , the thickened fastening end is the common fastening end of all the bristles of the bristle bundle 14 , since the melted plastic of the bristle ends fuses together so that the bristles of the bristle bundle 14 are connected to each other.

The individual bristles or bristle bundles 14 are anchored in the bristle carrier 10 by means of a deformation tool 26 (see FIG. 2 ), that is to say anchored without anchors. This is described below in an embodiment with reference to FIGS. 3 and 4 .

The deformation tool 26 is tubular and has a receptacle 28 in the form of a central channel.

For example, a bristle bundle 14 with a thickened fastening end 24 is pushed into the receptacle 28 from the front (this should not be understood as restrictive), so that, as shown in FIG. 4 , the fastening end is at the front Protrudes from the deformation tool 26 .

Subsequently, the deformation tool 26 on the displaceable and movable tool holder is moved to the associated opening 12 into which the bristle tuft 14 is to be inserted.

As shown in FIG. 4, the deformation tool 26 hits the front face 18, wherein the fixed end 24 of the protruding deformation tool 26 is pushed into the opening before the front face 31 of the deformation tool 26 comes into contact with the front face 18 of the bristle carrier 10. 12 in.

In this case, preferably, but this is not to be understood as restrictive, however, the fastening end 24 bears against the bottom 29 of the opening 12 .

The cross section of the opening 12 here (perpendicular to the longitudinal extension of the bristles or bristle bundles 14) is adjusted to a cross section that is at least as large as the cross section of the thickened fastening end 24, preferably slightly larger than the thickened fastening end cross-section of the section. Thus, the fixed end 24 can be inserted into the opening 12 without pinching or friction.

As soon as the front faces 18 , 31 are in contact with each other, the so-called exposure time, ie the contact time of the deforming tool with the bristle carrier, begins. This continuous contact, which lasts only at most 250 milliseconds, in particular less than 50 milliseconds, causes a plastic deformation of the section of edge 20 close to front face 18 at a depth s of at most 70% of the entire depth of opening 12 which is deformed later. In this region, the cross-section of the opening, ie the mouth region of the opening 12, tapers in cross-section towards the front face 18 to form a constriction 36 (see FIG. 4 ), so that the bristle bundles 14 can no longer be pull out.

The contact time should be at least 3 milliseconds long.

Optionally, the thickened end 24 can press slightly towards the bottom of the opening.

The deeper region of the opening, that is to say the bottom-side end region 40 remains undeformed, ie no permanent force is exerted on the thickened end 24 by impact here. In particular, there can also be a lateral gap here between the end 24 and the inner side of the opening.

The bristle bundle 14 can be clamped in the region of the constriction.

As can be recognized in FIG. 4, the thickened fixed end 24 has no corresponding For the front side 18 protruding outwards, but on the contrary, it is located below the front side 18 at a certain distance from the front side 18 formed on the edge side.

For example, the front face 31 can be flat.

The cross-section of the receptacle 28 can be minimally larger than the cross-section of the bristle bundle 14 or can also be minimally slightly smaller, wherein in this case the bristle bundle 14 is introduced into the receptacle 28 via a funnel-shaped insertion aid or accommodated The section 28 has a funnel-shaped widening in the region of the front side 31 in order to facilitate the insertion of the bristle bundles 14 .

Another variant provides that the deformation tool 26 is slotted longitudinally like the jaws of a drill chuck (see FIG. 3 ) or is formed from a plurality of (for example shell-shaped) tappets 50 (see FIG. 13 ), wherein here the tappets 50 do not strike perpendicularly to the front as in the other variants, but obliquely to the front and hit each other slightly. The deformed regions are then sections of the ring that are spaced apart from one another in terms of the circumference.

In the case of a slotted shaping tool or a shaping tool consisting of a plurality of tappets 50 , the bristle bundles 14 or individual bristles can be pushed laterally into the slots 52 or in the gaps between the tappets 50 . Alternatively, the bristle bundles 14 can also be transported from the rear into the receptacle 28 .

During this method, the bristle carrier 10 is held firmly in the holding device 32 of the corresponding device, see FIG. 14 .

It should also be emphasized that a delivery means 60 (see FIG. 2 ) can also be provided for all embodiments, by means of which first a single bristle or a plurality of individual bristles or a bristle bundle 14 or a plurality of bristle bundles 14 are conveyed to the bristle carrier 10 and move into the associated opening 12. Only then are one or more deformation tools 26 moved towards them, which then strike the front opening edge 20 in order to plastically deform the bristle carrier in the region of the opening edge or edges 20 .

FIG. 5 shows the establishment of a recess 38 in the finished deformed bristle carrier 10 in the region of the opening edge 20 after the deformation tool 26 enters the bristle carrier Create a recess at the position in 10. As already mentioned, the recess can surround completely annularly or also only form a section of the edge of the opening.

In the device according to FIG. 2 , each opening 12 is filled in succession and its opening edge is shaped by means of the forming tool 26 , so that the openings are filled one after the other. This is easy to achieve due to the very short cycle times.

However, it is also conceivable, as this is shown in FIG. 7 , that the shaping tool has a receptacle for a plurality of bristle bundles 14 or even for all bristle bundles (or individual bristles) of a bristle carrier.

However, because avoiding having to shape an excessively large area, the deformation tool does not impinge on the entire front side of the bristle carrier, but actually in the region of the edge around the opening.

In the variant according to FIG. 4 , the deformation tool therefore has a plurality of annular or ring-segment-shaped frontal extensions 70 which surround corresponding receiving openings in the deformation tool 26 . Each of these extensions 70 is then associated with an opening in the bristle carrier, and this extension 70 then plastically deforms the edge of the front face of the opening at least in sections.

The shape of the deformation tool 26 in the region of its front side 31 can vary. Typically, the front face 31 is flat, as this is shown in FIG. 3 .

In the embodiment according to FIG. 4 , the front side of the shaping tool 26 has a tapering cone 71 which is intended to facilitate penetration into the plastic.

FIG. 10 shows this variant and also shows that the front side 31 surrounds as a closed ring.

In the variant according to FIG. 11 , the recess for receiving the bristle bundle 24 in the forming tool 26 widens conically towards the front end. The conical recess 72 simplifies the receiving of the bristles or bristle bundles 14 when the bristles or bristle bundles are pushed in from the front. also, The front end is also slightly wedge-shaped, ie the plastic material is pushed in here from the outside inwards through the aforementioned conical recess 72 .

In the variant according to FIG. 12 , the deformation tool 26 is not flat at its front end but has a rounding 74 .

The variant according to FIG. 6 shows a further option of the invention, in which the bristle bundles 14 are always removed from the bristle magazine 42 via the rotating separating device 44 . The fastening end is then melted by means of a symbolically indicated heating device 46 to form the thickening.

The bristle bundles 14 are then removed from the separating device 44 and conveyed by means of the bristle transport device 100 into the forming tool 26 . Alternatively, the deformation tool 26 removes the bristle bundle 14 from the separating device 44 .

It should also be emphasized that in the embodiment shown, the openings 12 are equipped one after the other, more precisely with the aid of the forming tool 26 .

In this case, for example, the holding device 32 with the brush body performs a positioning movement after each fixed cycle of the bristle tufts in order to position the next opening relative to the deformation tool 26 (so-called hole-to-hole movement) in order to then be able to Start the next fixed cycle. Alternatively, the deformation tool 26 can be moved relative to the stationary brush body holder 32 .

The devices and mechanisms that can be used to cause this hole-to-hole movement are similar or identical to those in well known brush drilling and packing machines.

In order to achieve fast cycle times, as shown, the device according to the invention can also be driven by the quality of the flywheel (here flywheel 76 ) according to FIG. The flywheel 76 can be driven via a servo motor or a rotating cam. As an alternative thereto, the shaping tool is driven directly by a servomotor or a rotating cam or by an intervening drive mechanism.

It is also possible that, as it is shown in FIG. The bristle bundle 14 is pushed further out of the receptacle 28 . Then, if the thickened end 24 bears against the bottom 29 of the opening 12 , the deformation tool 26 is pushed further down the bristle bundle 14 towards the bristle carrier 10 .

The deformation tool 26 preferably only penetrates into the front side 18 of the bristle carrier 10 to a depth of 0.2 to 3 mm.

Whereas in the previous embodiment the deformation tool moved completely and hit the front face 18 , in the embodiment according to FIG. 15 the deformation tool is designed in multiple parts. The deformation tool comprises a so-called contact part 80 which is placed on the front face 18 before the impact pulse and which, if it is designed over a larger area, can have one or more of the above-mentioned extensions. 70. Alternatively, the contact portion 80 is instead a tube with a cross-section adapted to the edge of the opening.

The deforming tool then additionally comprises an impact part 82, which strikes with high pulses the contact part 80 already resting on the bristle carrier, which can penetrate into the plastic so that the contact part is plastically deformed . In this variant it is simpler to adapt the shape and position of the opening 12 by means of different contact portions 80 .

Whereas in the described embodiment the bristle bundles 14 are always inserted perpendicularly to the front side, in the variant according to FIGS. 8 and 9 provision is made for the bristle bundles 14 to be inserted obliquely with respect to the front side 18 . The front side 18 can here be flat or also be curved convexly or concavely. What is important in this variant is that the front side has a stepped recess facing the opening 12 . This means that adjoining the actual opening 12 is a flat, concave contact surface 90 which runs vertically or at least at an angle of 70-90° relative to the central axis A of the opening 12 . Due to this special recess leading to the opening 12, the bristle bundles 14 are not reoriented or bent during shaping.

The deformation tool then strikes the contact surface forming the edge of the opening.

In the case of a convex or concave front face 18 , the opening 12 runs obliquely to the corresponding tangent on the front face in the region of the opening 12 . 18 on the flat front In the case of , the tangents of course lie in the corresponding planes.

10: Bristle carrier

12: opening

14:Bristle bundle

20: Opening edge

22: Inner side of the wall

24:Thickened fixed end

26: Morph tool

28:Accommodating Department

29: Bottom

32: Holding device

76: flywheel

78:Slider

Claims (19)

A method for anchor-free fixing of at least one bristle in an associated opening (12) formed as a blind hole in a bristle carrier made of plastic as part of a later brush, The brush has a front side (18), from which the opening (12) extends into the bristle carrier (10), wherein at least one of the bristles has a thickened fixed end (24), characterized in lies in the following steps: (a) At least one bristle with a thickened fixed end (24) is first pushed into the opening (12) from the front side (18) of the bristle carrier (10), wherein the bristle carrier (10 ) with ambient temperature, (b) applying a shock pulse by means of a deformation tool (26) to part or all of the circumference of the frontal edge (22) of said opening (12), said edge facing the frontal side of said opening (12) The oral confinement of , and (c) The case where the cross-section of the opening (12) is reduced by the shock pulse only at the mouth, but not in the bottom-side end region of the opening (12) Next, the edge (22) is plastically deformed to a cross-section smaller than the cross-section of the thickened fixed end (24). The method according to claim 1, wherein the impact pulse is applied to the bristle carrier (10) with an action time of less than 250 milliseconds, in particular less than 50 milliseconds. The method according to claim 1 or 2, wherein, in a brush having a plurality of openings (12), the openings (12) are individually and sequentially equipped with at least one bristle associated therewith. The method of claim 3, wherein said deformation tool fills all openings (12) and fixes said bristles in said openings (12) by plastic deformation. The method according to claim 3, wherein a tubularly formed deformation tool (26) is used in the area of contact with the bristle carrier (10) in order to deform the edge (22) in a closed circumferential manner, Alternatively, a deformation tool ( 26 ) with a plurality of spaced apart tappets ( 50 ), which deform the edge ( 22 ) in sections, is used. The method according to claim 1 or 2, wherein the deforming tool (26) has a plurality of housings for bristles and simultaneously pushes the bristles into the associated openings (12) and makes the bristles The edge (22) of the opening is plastically deformed by the shock pulse. The method according to claim 6, wherein a deformation tool (26) with extensions (70) of a plurality of annular or ring-segment-shaped fronts is used, wherein each extension (70) is associated with an opening (12) associated, and said extension (70) plastically deforms, at least in sections, the edge (22) of the front face of said opening (12). The method as claimed in claim 1 or 2, wherein the deformation tool (26) is perpendicular to the mouth cross section and bumps into the bristle carrier (10), or the deformation tool (26) has a plurality of spaced apart Tappets (50) which run obliquely from the lateral exterior towards the edge (22) and at the same time strike inwards against the bristle carrier (10). The method according to claim 1 or 2, wherein a bristle carrier (10) with a front side (18) is used, the front side is curved, and the opening (12) is inclined to the The tangent runs on the front face (18) in the region, wherein the front face (18) has a flat contact surface adjoining the opening (12) at an angle of 70 to 90° relative to the opening The central axis of (12) extends, wherein the deformation tool (26) strikes the contact surface. The method according to claim 1 or 2, wherein the deformation tool has a flat front face (18), with which the deformation tool hits the bristle carrier (10) and/or conically tapered or have a conical groove (72) on the end side, The recess forms a receptacle for at least one of the bristles. The method according to claim 1 or 2, wherein the deformation tool (26) obtains its kinetic energy through a drive mechanism placed in motion, especially through a flywheel (76), or the drive mechanism is driven by a servo motor or a cam , or the deforming tool is directly driven by a servo motor or a cam. The method according to claim 1 or 2, wherein said deforming tool (26) has a contact portion (80) placed on said front face (18) and has an impact portion (82) which impacts against The contact portion (80) in order to knock the contact portion into the bristle carrier (10). The method according to claim 1 or 2, characterized in that the deformation tool penetrates into the front face (18) to a depth of 0.2mm-3mm. The method according to claim 1 or 2, wherein first at least one of said bristles is introduced into said opening (12) by means of a delivery tool (60), and then said bristles are introduced by means of said deformation tool (26) anchored in said brush body (10). A device for producing a brush and for carrying out the method as claimed in claim 1 or 2, said device having a holding device (32) for said bristle carrier (10) attached to the back resting against the holding device (32); and a deformation tool (26), which is designed to hit the front side (18) of the bristle carrier (10) and deform the bristle carrier. The device according to claim 15, wherein a delivery means (60) is provided which pushes the bristles into the opening (12) thereof. Apparatus according to claim 15, wherein said deforming tool (26) has a contact portion (80) placed on said front face (18) and has an impact portion (82) which strikes against said A contact portion (80) for pushing said contact portion into said bristle carrier (10). The device according to claim 15, wherein the opening (12) has a central axis (A) extending obliquely to a tangent on the front face (18) in the region of the opening (12), Wherein said front side (18) has a flat contact surface (90) adjacent to said opening (12), said contact surface is relative to the central axis (A) of said opening (12) at an angle of 70° to 90° ) stretches, wherein the deformation tool (26) can hit the contact surface (90). The device according to claim 15, wherein the deformation tool is divided and there is a bristle delivery device (100) entering the deformation tool (26) from the side.

Images