Device for feeding bristle bundles for the production of bristle goods and bristle goods production machine

Description

[0001] The invention relates to a device for feeding bristle bundles for the production of bristle products, in particular toothbrushes. The device comprises at least one perforated plate with at least one perforated array of receiving holes into which the bristle bundles can be transported by means of a flow generated by negative pressure, and at least one impact plate arranged downstream of the perforated plate, wherein the impact plate comprises at least one impact surface as a stop for bristle bundles to be transported into the receiving holes of the perforated plate. Furthermore, the invention also relates to a bristle product manufacturing machine, in particular a brush manufacturing machine, comprising such a device. Devices of the type mentioned above are previously known in practice in various embodiments.They are used to feed bristle bundles in the production of bristle products, such as toothbrushes, by transporting the bristle bundles previously separated from a bristle supply through suction lines, for example, hoses, into perforated plates using a gas or air stream under negative pressure. Document US2020383469 deals with a filament transport device in which filaments are transported through tubular elements by means of an air stream and at the end of which an aerodynamically shaped impact plate is provided to stop the filaments.

[0002] The impact plates located downstream of the perforated plates have the task of stopping the bundles of bristles arriving at a comparatively high speed.

[0003] The baffle plates can be positioned directly behind the perforated plates and spaced just a few tenths of a millimeter apart. This creates lateral gaps between the baffle plates and the perforated plates, through which a negative pressure can be applied to generate a gas or air flow into the suction lines. In practice, the baffle surfaces of the baffle plates are often formed by a close-meshed fabric, allowing part of the gas or air flow to flow through the fabric, i.e., through the baffle surface, to suck up the bristle bundles.

[0004] Over time, such fabrics can become clogged with contaminants, such as grinding dust, that can adhere to the bristle filaments that make up the bristle bundles. As a result, the negative pressure in the suction lines steadily decreases as the fabric becomes increasingly contaminated. The impact plates then need to be cleaned using ultrasound or replaced entirely.

[0005] The object of the invention is therefore to simplify the feeding of bristle bundles for the production of bristle goods.

[0006] To achieve this object, a device having the features of the independent claim is proposed, which is particularly characterized in that the impact plate has an aerodynamic shape.

[0007] The aerodynamic shape of the impact plate can reduce or even completely prevent the formation of turbulence in the flow or a disruption of the flow for transporting the bristle bundles into the receiving holes of the perforated plate.

[0008] In one embodiment of the device, the aerodynamic shape of the impact plate comprises at least one streamlined section located downstream of the at least one impact surface of the impact plate in the flow direction. The streamlined section, located downstream of the at least one impact surface of the impact plate, promotes the formation of a gas or air flow guided by a contour of the streamlined section in such a way that flow separation is avoided and turbulence is minimized. The flow-optimized contour of the streamlined section can promote laminar flow when the bristle bundles are sucked into the perforated plate. Additional suction openings in the area of ​​the impact surface and in particular the aforementioned fabric can then be dispensed with.The streamlined section with its flow-optimized contour makes it possible to provide a baffle plate that no longer has flow openings that are comparatively easily clogged with dirt.

[0009] The aerodynamic shape of the impact plate can comprise an impact surface that is adapted to the shape of a perforation field of the perforated plate. The shape of the impact surface, which in one embodiment of the device is adapted to the shape of the at least one perforation field of the perforated plate, makes it possible to reduce the distance taken by a flow, in particular a gas or air flow, from the receiving holes of the perforated plate past the impact plate through the device. The shape of the at least one impact surface, which is adapted to the shape of the at least one perforation field of the perforated plate, means that the flow needs to be deflected comparatively little, which helps prevent the previously mentioned flow separation or the formation of turbulence in the flow. The at least one perforation field and the at least one impact surface can have the same shape, for example, be round or circular.

[0010] Turbulence in the flow can cause contaminants, such as the grinding dust mentioned above, to settle in certain areas of the device, for example in the area of ​​the impact plate, and can impair the function of the device.

[0011] By ensuring that the flow through the device is as turbulence-free or laminar as possible, the removal of such contaminants is improved, so that contamination of the device during operation can be largely avoided.

[0012] The perforated plate of the device can, for example, have at least two perforated fields with receiving holes. Furthermore, the impact plate can have a number of impact surfaces that corresponds to the number of perforated fields of the perforated plate. In this way, each perforated field of the perforated plate can be assigned a perforated surface of the impact plate.

[0013] Each impact surface of the impact plate can be followed by a streamlined section. Using such a streamlined section, the flow for sucking bristle bundles into the receiving holes of the perforated plate can be optimized for each hole field.

[0014] The at least one streamlined section of the impact plate can have a geometry that tapers in the flow direction, in particular conically or spherically. Such a geometry can promote the formation of a low-turbulence, preferably turbulence-free and / or laminar flow.

[0015] In principle, it is advantageous if the impact plate has as few, preferably no sharp-edged transitions as possible on surfaces that come into contact with the flow. It is particularly advantageous if the aerodynamic shape of the impact plate has a rounded transition between the at least one impact surface of the impact plate and the streamlined section of the impact plate. In this way, a sharp-edged transition, which can promote the formation of turbulence in the flow, is avoided between the impact surface and the streamlined section of the impact plate. This promotes the formation of a low-turbulence or turbulence-free flow in the region of the transition between the impact surface and the streamlined section.

[0016] In one embodiment of the impact plate, the aerodynamic shape of the impact plate has a constriction between two adjacent impact surfaces of the impact plate. The constriction can be contained in a cross-section of the impact plate that contains the two adjacent impact surfaces of the impact plate. Thus, in the area of ​​the constriction, there is no material of the impact plate present that would impede the formation of the preferably laminar flow for transporting the bristle bundles into the receiving holes of the perforated plate. The aerodynamic shape of the impact plate can include rounded contours between adjacent impact surfaces, for example, in the area of ​​a constriction, as previously explained, in order to avoid sharp-edged transitions or geometries.

[0017] The at least one streamlined section may have a mirror-symmetrical longitudinal section and / or be rotationally symmetrical.

[0018] The longitudinal section can be contained in a sectional plane aligned along a longitudinal axis of the streamlined section. The longitudinal axis of the streamlined section can be aligned in a main transport direction of the bristle bundles into the receiving holes of the perforated plate and / or in the main flow direction of a flow passing through the streamlined section during operation of the device.

[0019] The at least one streamlined section can have a longitudinal section defined by a plurality of curved lines. Two curved lines, each of which can be arranged on different sides of a central axis of the longitudinal section, can be connected to one another on a side of the impact plate facing away from the impact surface. The curved lines can each extend around a center point located outside the impact plate. The two curved lines thus have a comparatively large radius, which can promote the streamlined shape of the streamlined section. The streamlined section can have a drop-shaped or egg-shaped geometry when viewed in longitudinal section.

[0020] A longitudinal section of the streamlined section may have a rounded end facing away from the impact surface. This avoids a sharp edge or point at the end of the streamlined section, which in turn promotes the formation of low-turbulence or turbulence-free flow around the streamlined section.

[0021] The baffle plate can have at least one flow-guiding structure. The at least one flow-guiding structure can be formed at least partially on the at least one streamlined section. The at least one flow-guiding structure can also promote the formation of a low-turbulence or turbulence-free, preferably laminar flow.

[0022] In one embodiment of the device, the impact plate has at least one flow channel as a flow-guiding structure. A flow channel can, for example, be formed on an outer side of the section. The flow channel can then be referred to as a flow groove. In one embodiment of the device, the impact plate has at least one flow channel as a flow-guiding structure that passes through the impact plate, preferably the streamlined section of the impact plate. Such a flow channel can be divided into two or more subchannels and / or exit at a rear side of the impact plate facing away from the impact surface.

[0023] The at least one impact surface of the impact plate can have at least one inlet opening into a flow channel of the impact plate. In this way, a negative pressure is applied close to the receiving holes of the perforated plate to create a flow for transporting the bristle bundles into the receiving holes of the perforated plate. In this context, it should be mentioned that it can be advantageous if such an inlet opening is arranged on an impact surface of the impact plate offset from the receiving holes of the impact plate. In this way, it is avoided that a bristle bundle that is transported into a receiving hole of the perforated plate is sucked through the inlet opening into the flow channel of the impact plate. An inlet opening arranged in this way offset from the receiving holes of the perforated plate in the impact surface does not then have to be covered with a close-meshed fabric to prevent bristle filaments from being sucked in.In addition, the inlet opening can be comparatively large, which can prevent the inlet opening from becoming blocked by dirt.

[0024] In one embodiment of the device, the impact surface of the impact plate is perforated. For this purpose, the impact surface can have at least one flow opening, preferably a bore, particularly preferably a laser bore.

[0025] The device can further comprise a housing with a receptacle for the impact plate. The housing and its receptacle can then serve as a suction bell, to which the negative pressure can be applied to transport the bristle bundles into the receiving holes of the perforated plate.

[0026] To create the flow described above, it may be advantageous for the housing receptacle to have a streamlined inner contour corresponding to at least one streamlined section. Here, too, the inner contour can be kept as free as possible from sharp edges and / or transitions. This helps prevent turbulence when flowing through the receptacle and improves the aerodynamics within the device, which is beneficial for the device's function.

[0027] The housing can have at least one flow channel oriented in the direction of a longitudinal axis of the impact plate and / or at least one flow channel oriented transversely to a longitudinal axis of the impact plate. The flow channels can be defined by the inner contour of the receptacle and / or the outer contour of the impact plate, in particular by the outer contour of the streamlined section.

[0028] The impact plate may have at least one fixing means, for example, at least one holding magnet, with which the impact plate can be secured, for example, in a housing. The fixing means can facilitate easy, preferably tool-free, replacement of the impact plate.

[0029] The housing and the impact plate can be made from a single piece and / or form a materially homogeneous, monolithic unit. The impact plate and / or the housing, in particular the at least one streamlined section of the impact plate and / or the housing receptacle, can be manufactured using an additive manufacturing process. The use of an additive manufacturing process to produce the comparatively complex geometries of the impact plate and / or the housing can reduce the manufacturing costs of the impact plate and / or the housing.

[0030] The device can have a suction line for each receiving hole in the perforated plate. A vacuum can be applied via the suction line to suck in the bristle bundles. The suction lines can open into the receiving holes in the perforated plate. Each receiving hole is preferably connected to a suction line. Individual or multiple suction lines can be combined into a common suction line. This can be advantageous for joining bristle bundles from sub-bundles during their transport into the perforated plate.

[0031] The device can be connected to a vacuum source and / or comprise a vacuum source. The vacuum generated by the vacuum source can act on the bristle bundles to be transported into the receiving holes of the perforated plate, thereby sucking them into the receiving holes of the perforated plate.

[0032] The outlet ends of the suction lines can be arranged or formed on a holding plate of the device. The holding plate is then positioned upstream of the perforated plate in the transport direction of the bristle bundles.

[0033] To achieve the object, a bristle product manufacturing machine is also proposed, which comprises a device for feeding bundles of bristles for the production of bristle products according to one of the claims directed to such a device.

[0034] The invention is described in more detail below using exemplary embodiments, but is not limited to these exemplary embodiments. Further exemplary embodiments result from combining the features of individual or multiple claims with one another and / or by combining individual or multiple features of the exemplary embodiments. They show: Figure 1: a sectional side view of a bristle manufacturing machine with a device for transporting bristle bundles by means of negative pressure into receiving holes of a perforated plate, wherein the device is arranged downstream of a separating device for separating bristle bundles from a supply of loose bristle filaments and has several suction lines for transporting the bristle bundles into receiving holes of a perforated plate, wherein a baffle plate is arranged downstream of the perforated plate, which baffle plate comprises a baffle surface, which is followed by a streamlined section of the baffle plate in order to promote a low-turbulence or turbulence-free flow towards a negative pressure source of the device, Figures 2-5: different views of a first embodiment of a baffle plate, wherein the baffle plate has two substantially circular baffles that are assigned to two circular hole fields of a perforated plate of the device, Figures 6 and 7: different,perspective views of a further embodiment of a baffle plate with two baffles, each baffle having a streamlined section downstream thereof, and the baffle plate having a plurality of flow-guiding structures in the form of flow channels formed on the outside of the baffle plate, Figures 8-11: different views of a further embodiment of a baffle plate, the two baffles of the baffle plate each having four inlet openings into flow-guiding structures, namely flow channels passing through the baffle plate, the flow channels splitting into a plurality of sub-channels as they extend towards their outlet ends, as shown in the sectional view according to, Figure 11clarifies, Figures 12-14: different views of a further embodiment of a baffle plate, which has a total of two baffles, between which a constriction of the baffle plate is formed, on the one hand to minimize the area of ​​the baffle plate and, on the other hand, to adapt the baffle surfaces of the baffle plate to the geometries of the hole fields of the corresponding hole plate to which the baffle plate is assigned, Figure 15: a perspective view of two baffles arranged in a common housing, each having two separate baffles, wherein the housing and the baffles consist of one part and are manufactured by means of an additive manufacturing process, for example by means of 3D printing, Figure 16: a view of a further housing with two baffles arranged therein, wherein the baffles have fixing means in the form of holding magnets,by means of which they are fixed in the housing and can be removed quickly and easily without the use of tools, Figure 17: a along the in , Figure 16 shown line XVII-XVII sectioned side view of the Figure 16 shown housing and the two baffle plates, wherein it can be seen that between the baffle plates and their receptacles in the housing, in addition to central flow channels in the flow direction behind the baffle plates, lateral flow channels are also provided, which ensure that a negative pressure or a resulting flow can also be guided to a certain extent over the sides of the receptacle of the housing, so that the entire flow does not have to undergo a 90° deflection at the edge of the baffle plates after hitting the baffle plate.

[0035] In the following description of various embodiments of the invention, elements that correspond in their function are given the same reference numerals even if they have a different design or shape.

[0036] Figure 1shows at least parts of a bristle product manufacturing machine, designated as a whole by 100, with a device, designated as a whole by 1, for feeding bristle bundles 2 for the production of bristle products, in particular toothbrushes. The device 1 has at least one perforated plate 3 and at least one impact plate 4. The perforated plate 3 comprises at least one perforated field 5 of receiving holes 6, into which the bristle bundles 2 can be transported by means of a flow generated by negative pressure. The impact plate 4 is arranged downstream of the perforated plate 3 in the transport direction of the bristle bundles 2 through the device 1. The transport direction of the bristle bundles 2 and the flow through the device 1 for transporting the bristle bundles 2 into the receiving holes 6 of the perforated plate 3 are indicated by the arrows 19 in Figure 1 illustrated.

[0037] The impact plate 4 has at least one impact surface 7 for bristle bundles 2. The impact surface 7 can be used to slow down the bristle bundles 2 sucked into the receiving holes 6 of the perforated plate 3. The impact surface 7 thus serves as a stop for the bristle bundles 2.

[0038] The Figures 2-17 show different embodiments of baffle plates 4, which are used instead of the Figure 1 baffle plate 4 shown in section. All of the baffle plates 4 shown in the figures have an aerodynamic shape that can favorably influence the flow for transporting the bristle bundles 2 into the receiving holes 6 of the perforated plates 3.

[0039] Except for those in the Figures 12-14In the baffle plate 4 shown, each of the baffle plates 4 has, for each of its baffle surfaces 7, a streamlined section 8 arranged downstream of the corresponding baffle surface 7. Each of the baffle plates 4 shown in the figures further has baffle surfaces 7 whose shape is adapted to a shape of the perforated fields 5 of the perforated plates 3 assigned to the baffle plates 4. In the embodiments shown, the perforated fields 5 are round, preferably circular.

[0040] The perforated plates 3, which are inserted into the Figures 2-17 The baffle plates 4 shown are each assigned at least two perforated fields 5 with receiving holes 6. The baffle plates 4 have a number of baffle surfaces 7 that corresponds to the number of perforated fields 5 of the perforated plates 3. This ensures that each perforated field 5 of the perforated plates 3 is assigned a baffle surface 7 of a baffle plate 4.

[0041] The Figures 1-11and 15-17 illustrate that each impact surface 7 of a baffle plate 4 is followed by a streamlined section 8.

[0042] The streamlined sections 8 have a conical or spherical geometry tapering in the flow direction through the device 1. The impact plates 4 have as few as possible, preferably no sharp-edged transitions on their surfaces that come into contact with the flow, especially those that are oriented transversely to the flow direction.

[0043] The figures further illustrate that the aerodynamic shapes of the impact plates 4 include rounded transitions 9 between the impact surfaces 7 and the streamlined sections 8 of the impact plate 4.

[0044] The Figures 2-17 show that the aerodynamic shape of the impact plates 4 includes a constriction 10 between the impact surfaces 7.

[0045] Figure 4with a longitudinal section through a streamlined section 8 of the Figures 2-5 The baffle plate 4 shown in the drawing illustrates that the streamlined section 8 has a mirror-symmetrical longitudinal section and is also rotationally symmetrical. The same applies to the Figures 8-11 shown impact plate 4 and its longitudinal section, which is shown in Figure 11 is shown.

[0046] These streamlined sections 8 each have a longitudinal section defined by several curved lines 11, two of which are connected to one another on a side of the impact plate 4 facing away from the impact surface 7. The curved lines 11 each extend around a center point located outside the respective impact plate 4. At their end facing away from the impact surface 7, the streamlined sections 8 are rounded.

[0047] The Figures 6 and 7and 8-11 are provided with flow-guiding structures 12 which promote the formation of a low-turbulence or turbulence-free flow around the baffle plate 4.

[0048] In the Figures 6 and 7 In the embodiment of a baffle plate 4 shown, flow-guiding structures 12 are provided in the form of flow channels 13 introduced into the outside of the baffle plate 4.

[0049] The Figures 8-11 The baffle plate 4 shown has flow-guiding structures 12 in the form of flow channels 13, which pass through the baffle plate 4 and the section 8 of the baffle plate 4. This is clearly visible in the sectional view of the baffle plate 4 according to Figure 11 The one in the Figures 8-11In the embodiment of a baffle plate 4 shown, a total of four inlet openings 14 are formed within the baffles 7 into a flow channel 13 of the baffle plate 4. The flow channels 13 branch out into several sub-channels 15 as they extend towards a rear end of the baffle plate 4. This is shown in the sectional view according to Figure 11 The inlet openings 14 are located at positions on the respective impact surface 7 that are offset from areas where bristle bundles 2 impact the impact surfaces 7. The inlet openings 14 are thus offset from the receiving holes 6 of the perforated plates 3, so that vertical projections of the receiving holes 6 onto the impact surfaces 7 are positioned outside the inlet openings 14.

[0050] If required, it is possible to perforate the impact surfaces 7 of the impact plates 4 with flow openings. For example, holes, preferably laser holes, can be made in the impact plates 4 as flow openings. In particular, the holes shown in the Figures 12-14 The embodiment of the impact plate 4 shown, which does not have a streamlined section 8 arranged downstream of the impact surfaces 7 of this impact plate 4, is suitable for such a perforation. Such a perforation eliminates the need for a close-meshed fabric, which is often used on impact plates used in practice.

[0051] The Figures 1 and 15 to 17 show that the device 1 further comprises a housing 16 with a receptacle 17 for at least one impact plate 4. The receptacle 17 has a streamlined inner contour formed corresponding to the at least one streamlined section 8.

[0052] The housing 16, together with the at least one impact plate 4, forms at least one flow channel 27 oriented in the direction of a longitudinal axis of the impact plate 4 or the housing 16 and at least one flow channel 28 oriented transversely to the longitudinal axis of the impact plate 4 or the housing 16.

[0053] In the Figures 2-14 and 16-17, these have a plurality of fixing means 18 in the form of holding magnets, with which the baffle plates 4 can be fixed in the receptacles 17 of the housing 16 of the device 1 without the use of tools.

[0054] In the Figure 15 In the illustrated embodiment of a housing 16, the housing is made from a single piece together with the two impact plates 4. The housing 16 and impact plates 4 thus form a materially homogeneous, monolithic unit, which can be manufactured, for example, using an additive manufacturing process.

[0055] In the Figures 16 and 17In the embodiment shown, the housing 16 has a plurality of flow guide surfaces 29 within the receptacles 17 for the impact plates 4, which delimit and form the flow channels 27, 28 between the impact plates 4 and the inner contours of the receptacles 17.

[0056] As with the other designs of impact plates 4, the same applies to the Figure 15 shown embodiment that the impact plates 4 and the housings 16, in particular the at least one streamlined section 8 of the impact plates 4 and / or the receptacles 17 of the housings 16 can be manufactured by means of an additive manufacturing process.

[0057] The device 1 according to Figure 1 has a suction line 20 for each receiving hole 6 of the respective perforated plate 3. Furthermore, the device 1 according to Figure 1equipped or connected to a vacuum source 21, the vacuum of which can be applied to the flow-conducting parts of the device 1, namely to the housing 16, the baffle plates 4, the perforated plates 3, the suction lines 20 and ultimately the bristle bundles 2 arranged therein.

[0058] Outlet ends 22 of the suction lines 20 are attached to a holding plate 23 of the device 1. The holding plate 23 is positioned upstream of the perforated plate 3.

[0059] The functioning of the device 1 is as follows: By means of a bundle separator 24 of the device 1, bristle bundles 2 are separated from a supply of 25 loose bristle filaments and placed in the Figure 1 shown transfer position on the device 1.

[0060] The bristle bundles 2 still arranged in the bundle separator 24 are in the Figure 1shown transfer position in front of the inlet openings of the suction lines 20 on a further holding plate 26 of the device 1, to which the suction lines 20 are fastened with their inlet ends.

[0061] If the vacuum source 21 of the device 1 is now activated, the bristle bundles 2 held ready are moved according to the arrows 19 in Figure 1 , which symbolize the transport direction of the bristle bundles 2 through the device 1, are drawn into the suction lines 20 and transported into the receiving holes 6 of the perforated plate 3 by the flow generated by the negative pressure. The bristle bundles 2 are decelerated by the impact plate 4 arranged behind the perforated plate 3. In doing so, the bristle bundles 2 hit the impact surface 7 of the perforated plate 3.

[0062] Due to the aerodynamic shape of the impact plate 4, which is characterized, among other things, by the streamlined geometry of the streamlined section 8, a flow generated by the vacuum source 21 is guided in such a way that turbulence is reduced or even completely eliminated. This can promote the transport of the bristle bundles 2 into the receiving holes 6 of the perforated plate 3 and / or the reliable removal of contaminants, such as grinding dust, that may adhere to the bristle bundles 2.

[0063] Figure 1shows that the vacuum source 21 is connected via the receptacle 17 of the housing 16, the flow channels 27, 28, which form the impact plate 4 together with the inner contour of the receptacle 17 of the housing 16, the receiving holes 6 of the perforated plate 3 and the suction lines 20 to the bristle bundles 2 located in the transfer position in such a way that the bristle bundles 2 can be sucked through the suction lines 20 into the receiving holes 6 of the perforated plate 3. The bristle bundles 2 are braked by the impact surface 7 of the impact plate 4.

[0064] The invention relates to improvements in the technical field of the production of bristle goods 2. For this purpose, a device 1 for feeding bristle bundles 2 for the production of bristle goods is proposed, which device has a baffle plate 4 with an aerodynamic shape. List of reference symbols

[0065] 1Device 2Bristle bundle 3Perforated plate 4Baffle plate 5Perforated field in 3 6Hole in 3 7Baffle surface of 4 8Streamlined section of 4 9Transition between 7 and 8 10Constriction 11Curved line 12Flow-guiding structure 13Flow channel in or on 4 14Inlet opening 15Partial channel 16Housing 17Receiver in 16 18Fixing agent 19Transport direction of the bristle bundles through the device / flow 20Suction line 21Vacuum source 22Exit end of 20 23Holding plate 24Bundle separator 25Supply of loose bristle filaments 26Further holding plate 27Flow channel in 17 28Flow channel in 17 29Flow guide surface 100Brushware manufacturing machine

Claims

1. Device (1) for feeding bristle bundles (2) for the production of bristle products, in particular toothbrushes, wherein the device (1) has at least one perforated plate (3) having at least one hole array (5) made of receiving holes (6) into which the bristle bundles (2) can be transported by means of a flow generated by a vacuum, and at least one baffle plate (4) arranged downstream of the perforated plate (3), which baffle plate (4) has at least one baffle surface (7) as a stop for bristle bundles (2) to be transported into the receiving holes (6) of the perforated plate (2), characterized in that the baffle plate (4) has an aerodynamic shape and the device (1) has a housing (16) with a receptacle (17) for the baffle plate (4), wherein the receptacle (17) has a streamlined inner contour corresponding to the aerodynamically shaped baffle plate (4).

2. Device (1) according to claim 1, wherein the aerodynamic shape of the baffle plate (4) comprises at least one streamlined section (8) which is arranged downstream of the at least one baffle surface (7), and / or that the aerodynamic shape comprises at least one baffle surface (7) which is adapted to the shape of a hole array (5) of the perforated plate (3).

3. Device (1) according to claim 1 or 2, wherein the perforated plate (3) has at least two hole arrays (5) with receiving holes (6), and / or wherein a baffle surface (7) is associated with each hole array (5), preferably wherein the baffle plate (4) has a number of baffle surfaces (7) which corresponds to the number of hole arrays (5) of the perforated plate (3).

4. Device (1) according to one of the preceding claims, characterized in that a streamlined section (8) is located downstream of each baffle surface (7) of the baffle plate (4).

5. Device (1) according to one of the preceding claims, characterized in that at least one streamlined section (8) of the baffle plate (4) has a geometry which tapers in the direction of flow, in particular in a conical or spherical manner, and / or wherein the baffle plate (4) has rounded transitions on surfaces coming into contact with the flow.

6. Device (1) according to one of the preceding claims, wherein the aerodynamic shape of the baffle plate (4) has a rounded transition (9) between the at least one baffle surface (7) and a streamlined section (8) of the baffle plate (4), and / or wherein the aerodynamic shape of the baffle plate (4) has a constriction (10) between adjacent baffle surfaces (7), and / or wherein the aerodynamic shape of the baffle plate (4) has rounded contours between baffle surfaces (7) of the baffle plate (4).

7. Device (1) according to one of the preceding claims, wherein at least one streamlined section (8) has a mirror-symmetrical longitudinal section and / or is rotationally symmetrical.

8. Device (1) according to one of the preceding claims, wherein at least one streamlined section (8) has a longitudinal section which is bounded by at least two or more arcs (11), wherein two arcs (11) are connected to one another on a side of the baffle plate (4) facing away from the baffle surface (7) and / or each run around a center point which is arranged outside the baffle plate (4).

9. Device (1) according to one of the preceding claims, wherein a longitudinal section of at least one streamlined section (8) has a rounded end facing away from the baffle surface (7).

10. Device (1) according to one of the preceding claims, wherein the baffle plate (4) has at least one flow-guiding structure (12).

11. Device (1) according to one of the preceding claims, wherein the baffle plate (4) has at least one flow channel (13) as the flow-guiding structure (12), in particular wherein at least one flow channel (13) is formed on an outer side of a streamlined section (8) and / or wherein at least one flow channel (13) passes through the baffle plate (4), in particular a streamlined section (8) of the baffle plate (4).

12. Device (1) according to one of the preceding claims, wherein the at least one baffle surface (7) has at least one inlet opening (14) into a flow channel (13) of the baffle plate (4).

13. Device (1) according to one of the preceding claims, wherein at least one baffle surface (7) is perforated, in particular by at least one flow opening, preferably a bore, particularly preferably by a laser bore.

14. Device (1) according to one of the preceding claims, wherein the housing (16) has at least one flow channel (13) aligned in the direction of a longitudinal axis of the baffle plate (4) and / or at least one flow channel (13) aligned transversely to a longitudinal axis of the baffle plate (4).

15. Device (1) according to one of the preceding claims, wherein the baffle plate (4) comprises at least one fixing means (18), in particular at least one holding magnet, and / or wherein the housing (16) and the at least one baffle plate (4) are manufactured from one piece and / or form a materially homogeneous, monolithic unit.

16. Device (1) according to one of the preceding claims, wherein the baffle plate (4) and / or the housing (16), in particular at least one streamlined section (8) and / or the receptacle (17), is / are produced by means of an additive manufacturing process.

17. Device (1) according to one of the preceding claims, wherein the device (1) has a suction line (20) for each receiving hole (6) of the perforated plate (3) and / or is connected to a vacuum source (21) and / or has a vacuum source (21).

18. Device (1) according to the preceding claim, wherein outlet ends (22) of the suction lines (20) are arranged or formed on a holding plate (23), in particular wherein the holding plate (23) is mounted in front of the perforated plate (3).

19. Bristle goods production machine (100) comprising a device (1) according to one of the preceding claims.