EP3367843B1 - Device and method for producing bristle arrays for brushes - Google Patents
Device and method for producing bristle arrays for brushes Download PDFInfo
- Publication number
- EP3367843B1 EP3367843B1 EP16788498.0A EP16788498A EP3367843B1 EP 3367843 B1 EP3367843 B1 EP 3367843B1 EP 16788498 A EP16788498 A EP 16788498A EP 3367843 B1 EP3367843 B1 EP 3367843B1
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- European Patent Office
- Prior art keywords
- channel
- bristle
- projectile
- cluster
- opening
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- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000003491 array Methods 0.000 title claims 3
- 230000032258 transport Effects 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 241000031711 Cytophagaceae Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009732 tufting Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/08—Preparing uniform tufts of bristles
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
- A46D3/04—Machines for inserting or fixing bristles in bodies
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
- A46D3/08—Parts of brush-making machines
- A46D3/082—Magazines for bristles; Feeding bristles to magazines; Knot picking
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
- A46D3/08—Parts of brush-making machines
- A46D3/085—Magazines for brush bodies; Feeding bodies
Definitions
- the invention relates to a device for producing bristle fields for brushes, in particular toothbrushes, with a tuft singulating device which removes individual tufts of bristles from a tufting magazine and a tuft transporting device which has at least one channel through which an isolated bristle tuft is conveyed by means of a gas flow to a tuft picking unit ,
- the bristle holding member is otherwise either the brush body or a part of the finished brush, such as the brush head or a wafer, or, alternatively, a perforated plate or cassette with filling holes, from which the tufts can be pressed into another part or part of the finished brush ,
- the orifice plate or cassette can also be used as a tool insert in an injection mold, so that the bristle ends, which protrude from the perforated plate or cassette, are overmolded.
- the bristle holding part each has prefabricated openings, in which the individual bristle tufts are pressed.
- a first, the previously indicated variant of such a device is to transfer the isolated tufts of bristles directly into a Stopftechnik, by means of which the frets are stuffed or pressed into holes of a bristle holding part, for. B. EP 0 972 464 A1 and EP 0 972 465 A1 ,
- the second variant is the variant described in the aforementioned publication, in which isolated tufts of bristles via tubes by means of a gas flow freely fly through this channel and thus bridge a transport path.
- "Gas flow” in the context of the invention means that the bristle tufts either by compressed air or by negative pressure the channel be promoted.
- the cross section of the tuft must be matched very closely to the cross section of the channel. Namely, if the bristle tufts too small, the bristles fly individually through the channel and reach a relatively disordered one sitting after the channel receiving plate.
- the object of the invention is to improve a device of the type mentioned in order to achieve an even more controlled movement of the bristle tufts.
- This object is achieved in a device of the type mentioned above in that a moving in the channel by the gas flow projectile is provided, which is arranged in the conveying direction of the bristle tufts after introduced into the channel bristle tufts and contacted the bristle tufts back and through the channel for tufts suppressed.
- a projectile which forms an intermediate part which is moved by the gas flow and which mechanically presses against the tufts of bristles and drives it through the channel .
- the tufts can be compact by the invention already after the tuft picking or brought to the final compactness and optionally already transported through the channels. A densification of the tufts after the channel immediately following tufts is therefore unnecessary. Furthermore, there are no loose bristles in the channel.
- the projectile is preferably guided exclusively through the channel wall and is mechanically otherwise freely movable in the channel wall, d. H. There is no mechanical coupling to a drive via intermediate components.
- the projectile is in particular a cylindrical, elongated body or a sphere, preferably made of plastic.
- a minimum clearance which is smaller than the cross section of a conveyed bristle, preferably less than 0.04 mm, preferably 0.02 mm.
- the result is a tight fit between projectile and wall, which does not allow flow around the projectile.
- the tuft does not split in front of the projectile.
- a seal may be attached, which presses against the channel wall.
- a plurality of channels and a separate projectile are provided for each channel, so that substantially at the same time the separated several bristle tufts are transported to the tuft picking unit.
- one advantage of the present invention is that, due to the projectile, the position of the bristles of a tuft is defined in the tuft picking unit. Previously, it could happen that individual bristles were more or less pushed into the tuft pickup, so that the back end of the tufts in the tuft picking unit did not form a unitary structure similar to an end wall. Because the projectile abuts the individual bristles at its rear end, the entire bristle tuft has a unitary structure when seated in the tuft picking unit.
- the at least one channel may preferably be curved, for example in the form of an arc.
- a projectile it is particularly surprising to use a projectile here.
- the length and cross section of the projectile can be tuned to the channel cross section and the curvature of the channel as well as the cross section of the individual bristles so that the projectile easily transports the tufts of bristles through the curved channel without even clamping in the channel.
- the at least one channel can be formed through the interior of a tube, in particular a bent tube, preferably a metal tube.
- plastic tubes can be used, but here it must be ensured that due to the gas pressure no expansion of the tubes takes place in such a way that creates a game between the wall and projectile, blowing through the gas, which separates the tufts. It is optionally possible to provide the projectile on the outside with a seal.
- the plastic pipe as a channel can also stretch locally to push the closed against the projectile or its seal and to have no air gap.
- the transmission of energy, d. H. the gas flow, on the projectile can be achieved by a compressed air connection.
- This compressed air connection opens, for example, the back of the projectile in the tuft-transporting device.
- the arrangement is such that the projectile is supplied with compressed air at the rear.
- the projectile moves between a home position where it is located prior to transporting the bristle tufts and an end position where it has pushed the tufts of bristles into the tuft picking unit.
- a return device is present in order to easily transfer the projectile back to the starting position. This is compressed air operated (pressure surge or vacuum) and leads the projectile from the end position back to the starting position.
- the tuft picking unit may, for example, have a movable support with an opening aligned with the channel end (a plurality of openings corresponding to a plurality of channels), the support being disposed between a receiving position in which the opening receives the bristle tufts and a transfer position remote therefrom in which the bristle tufts the opening is moved out, is movable.
- the holder can in particular be designed to be movable back and forth or rotating, so that rapidly transported bristle tufts are moved away in cycles for further processing.
- the holder may have several in succession to the channel ends voran211bare openings and be moved so that during the movement of the filled opening in the transfer position already a free Opening is moved towards the channel, which serves either the next filling and / or only the introduction of compressed gas to move back the projectile.
- the aforementioned return device can be coupled to the holder such that after removal of the filled opening from the channel end of compressed air against the located at the channel end projectile can be acted upon.
- the compressed-air connections of the return device open, for example, at free openings in the holder, that is to say at openings which are next filled with bristle tufts.
- the compressed air connections must be moved very little, because the holder is an intermediate part between the end of the corresponding channel and the compressed air connection.
- the compressed air connection must be moved only slightly axially to the holder when the projectile is to be moved back.
- the return device comprises an exchange unit for projectiles, wherein the exchange unit clocks the projectile in its end position outside the associated channel to the starting position.
- the channels are immediately free again for feeding further tufts, and outside the channels, the projectiles are moved back again.
- a replaceable plate may be used, e.g. a turntable that clocks back the projectiles in one or more steps.
- a turntable has distributed over its circumference several openings or carries holding plates with several openings, which are then filled.
- a movable pin is provided for each opening in the tuft picking unit or the holder, which pushes out the tufts of bristles from the opening of the tuft picking unit or the holder.
- the transfer to a subsequent part is therefore purely mechanical, so that the perfect geometry of the bristle tufts, with which it sits in the tuft pickup unit, can be further maintained.
- the bristle holding member may be a head of a brush, a brush head or, for example, a holding plate.
- the projectile can be accommodated in its initial position in a projectile seat, which is arranged in the transport device for a loading unit for isolated bristle tufts.
- the loading unit transports the bristle tufts to the beginning of the channel.
- the channel beginning is thus defined by that part of the channel into which the bristle tufts are inserted.
- the projectile seat can be reversibly adjusted to and away from the beginning of the channel. This space is created in the initial position of the projectile seat by the movable projectile seat to deliver the bristle tufts in particular laterally to the channel beginning. After fitting the channel with a bristle tuft, the projectile seat is moved in the direction of the beginning of the channel.
- the projectile seat has z. B. a guide with a projectile stop on which a pressure line opens. Once the projectile has reached the projectile stop, it is in the starting position defined with it. Due to the projectile seat, a good tightness can be achieved, so that all the energy is transferred to the projectile when pressurized.
- the guide on the projectile seat may have a front end which abuts the back end of the tufted bristle tuft and pushes the bristle tuft into the channel upon delivery of the projectile seat to the bristle tuft.
- the projectile seat has a dual function, he takes on the projectile and presses shortly before pressurization of the projectile, the bristle tufts in the channel, so that the bristle tufts is guided on the front, before the projectile still acts on it.
- the channel beginning and / or the guide can have a funnel-shaped extension at their end facing the bristle tufts in order to also support the edge-side bristles of a tuft and press them inwards, so that the tufts of bristles are compact.
- the loading unit can be run as a laterally in the channel movable plate with a receiving hole for the bristle tufts.
- a plurality of bristle tuft receiving holes are provided which are aligned with associated channels and projectiles when the plate is in the so-called transfer position.
- the plate has openings that are large enough to allow the projectile to pass through the aperture.
- the loading unit can also be moved away before the projectile seat is delivered.
- the loading unit is so z. B. a kind of intermediate plate between the beginning of the channel and the projectile seat.
- bristle tufts which have bristles with ends which are sharpened on one or both sides.
- This sharpening can be done by chemical and / or mechanical processing. Just sharpened bristles were difficult to transport in the past by pure air blasts or vacuum.
- the projectile also transports such Bristle tufts reliably, for example by pressing against the pointed bristles.
- FIG. 1 a tuft separating device 10 is shown, which has a magazine 12 with bristles tufts arranged in parallel, the package being provided with bristle tufts with the reference numeral 14.
- a moving along the open end of the magazine pivot arm 16 has on its outer circumference a plurality of recesses 18 which are filled in the strip along the package 14 thereby separated bristle tufts 20.
- Not shown in FIG. 1 a complementary to the pivot arm 16 contoured counter-plate which closes the recesses 18 to the outside, so that the bristle tufts 20 are held laterally.
- the tufts 20 of the transport device are supplied.
- the swing arm 16 itself can either be in the in FIG. 2 shown tuft-conveying device are formed and form the loading unit 17, as shown at the left end, or the bristle tufts 20 are removed from the pivot arm 16 and inserted into a holder as a loading unit 17 with corresponding receiving holes, which is then transported to the tuft-transporting device.
- the tuft transport device is shown in detail. It comprises a plurality of, preferably parallel or substantially parallel channels 22, which are formed for example by bent metal tube.
- the channels have a channel beginning 24, which widens conically.
- the loading unit 17 is conveyed with the tufts 20 to the channel beginnings 24, in particular by lateral displacement or movement of the bristle tufts 20 together with the loading unit 17 relative to the channels 22.
- the bristle tufts 20 are opposite the loading unit 17 with their two ends in front.
- the front end of the bristle tufts adjoins directly to the channel beginnings 24, and the respective rear end adjoins so-called projectile seats 26.
- projectile seats can be carried out, for example, by a plate having a plurality of bores or by tubes.
- located in the projectile seats guides 28 are aligned with associated channel beginnings 24. That is, each channel 22 is assigned a projectile seat 26.
- the rear end of each projectile 30 lies in the in FIG. 2 shown starting position at a bottom or projectile stop 32, in which at the same time a Druckgaszu Beforeö réelle 34 is arranged.
- This Druckgaszu Beforeö réelle 34 forms a compressed air connection, via the abruptly compressed air can act on the projectile.
- Each projectile seat 26 thus forms inside the associated projectile a guide 28, wherein the guide 28 widens toward the rear end of the associated bristle tufts 20 in a funnel shape, as in FIG. 2 good to see.
- the unit of all projectile seats 26 is preferably linearly displaceable in the direction of the channel beginnings 24.
- a tuft picking unit 36 for example in the form of a plate with openings 38, 38 'at.
- the tuft picking unit 36 may be configured as a turntable that can be rotated about an axis A, either reversibly or circumferentially.
- Several groups of openings 38 are provided on this turntable so that, by turning and advancing from one group to the next, a group of openings 38, 38 'are moved laterally away from the channel ends and the next group are moved towards the channel ends and in alignment with them can.
- one group of openings 38 is positioned below the channel ends and another group of openings 38 'offset by 180 ° in a so-called stuffing station.
- This stuffing station comprises a plurality of linearly displaceable pins 40, which are aligned with the associated openings 38.
- the pins 40 are mounted in a guide plate 42.
- an alignment plate 44 is disposed adjacent, to which in turn directly a bristle holding member 46, here in the form of a small plate, adjacent.
- the bristle holding member 46 is a part of the later finished brush and is overmolded with the remaining brush body or glued, welded or clipped or is the brush body itself (including style, neck and head).
- the alignment plate 44 may, but not necessarily, have oblique openings to position, for example, laterally sloping bristle tufts in the bristle holding member 46. It is also possible under certain circumstances for a number of adjacent bristle tufts 20 to be combined to form a large bristle tuft 20, which is then inserted into the bristle holding part 46.
- FIG. 1 shows the loading of the tuft-transporting device with a group of scattered bristle tufts 20th
- FIG. 3 shows a subsequent situation in the tuft-transporting device, in which the projectile seats 26 are moved axially to the bristle tufts 20, and because of the funnel-shaped extension they very easily take up the rear ends of the bristle tufts.
- the projectiles 30 may abut the end face of the tuft picking unit 36, which could be minimally smaller than the tube diameter, in particular less than 0.3 mm in diameter. However, this is not absolutely necessary.
- the tuft picking unit 36 has a stopper plate under the exit of the openings 38. When the bristle tufts 20 have reached this stop plate, they may still protrude slightly back from the plate-like tuft picking unit 36 so that the projectiles 30 do not abut the tuft picking unit 36 but are still slightly spaced from the tuft picking unit 36 due to the stop of the tufts when they are in her in FIG. 5 are shown end position.
- the tuft picking unit 36 as shown in FIG. 6 is shown rotated, so that the next free group of openings 38 'is located below the projectiles still in the final position.
- the special transport device allows the bristle tufts to be compressed as they are taken from the magazine, also conveyed into the tuft picking unit 36 from the projectile and then no longer need to be compressed until they are finally installed in the brush.
- the openings 38 ' are shown smaller in cross section than the previously filled openings 38.
- these openings 38 ' would not be used for filling, but would serve only as part of a recirculation unit for the projectiles 30.
- the openings 38 'to allow it to flow compressed air against the front of the projectiles 30 to move the projectiles 30 via the channels 22 back to the starting position in which they are arranged in the projectile seats 26.
- the loaded bristle holding members 46 are then removed from the alignment plate 44, preferably by the unit of bristle tufts 20 and Borstenhalteteil 46 is simply pulled out. Usually, the bristles of all bristle tufts are then thermally fused together at the back (here at the top) of the bristle holding part 46.
- the tuft picking unit must be pivoted again so that the openings 38 are located below the channel ends. Otherwise, the openings 38 'can be large enough to fill them, d. h., the tuft picking unit does not have to be swiveled anymore. In this position, the next group of bristle tufts 20 can then be transported up.
- the channels 22 may have different distances from each other at the beginning and at the end of the channel or be positioned differently.
- bristle fields i. H. Groups of bristle tufts 20 are generated on the tuft picking unit 36, which substantially corresponds to the grouping, as it is found later in the bristle holding part of the brush.
- even minor shifts, transverse movements, etc. take place when the bristle tufts 20, the channels 22 and possibly also the tuft picking unit 36 have left.
- the bristles of a bristle tuft 20 may be sharpened, at one or both ends.
- FIG. 10 An alternative recycling device for the projectiles is in FIG. 10 shown.
- the return device is a change unit for projectiles 30, here a rotary plate or a turntable 50, in which the projectiles 30 sit in their final position.
- the turntable 50 is then rotated back toward the home position after the projectiles 30 have delivered the bristle tufts.
- the turntable can be clocked back, for example, in 90 ° or 180 ° increments or in even smaller steps.
- the cycle time is increased when the projectiles are returned so outside of the channels.
- the bristle tufts reach the channels 22 in the initial position, a space must be created between the turntable 50 and the channel beginning.
- the flexible tubes are lifted on a mounting part 52 so that space for lateral feeding of Loading unit 17 is there. Otherwise, the rest of the device may be configured as in the previous embodiment.
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Description
Die Erfindung betrifft eine Vorrichtung zum Erzeugen von Borstenfeldern für Bürsten, insbesondere Zahnbürsten, mit einer Büschelvereinzelungsvorrichtung, die einzelne Borstenbüschel einem Büschelmagazin entnimmt und einer Büschel-Transportvorrichtung, die wenigstens einen Kanal aufweist, durch den ein vereinzeltes Borstenbüschel mittels einer Gasströmung zu einer Büschelaufnahmeeinheit gefördert wird.The invention relates to a device for producing bristle fields for brushes, in particular toothbrushes, with a tuft singulating device which removes individual tufts of bristles from a tufting magazine and a tuft transporting device which has at least one channel through which an isolated bristle tuft is conveyed by means of a gas flow to a tuft picking unit ,
Eine solche Vorrichtung ist bereits aus der
Es gibt grundsätzlich verschiedene Varianten, wie die aus einem Borstenmagazin vereinzelten Borstenbüschel zum Borstenhalteteil transportiert werden. Das Borstenhalteteil ist im Übrigen entweder der Bürstenkörper oder ein Teil der fertigen Bürste, beispielsweise der Bürstenkopf oder ein Plättchen, oder, alternativ, eine Lochplatte oder Kassette mit Befülllöchern, aus denen die Büschel in ein anderes Teil oder ein Teil der fertigen Bürste gedrückt werden können. Ferner kann die Lochplatte oder Kassette auch als Werkzeugeinsatz in einem Spritzgußwerkzeug eingesetzt werden, so dass die Borstenenden, die aus der Lochplatte oder Kassette herausstehen, umspritzt werden. Das Borstenhalteteil hat jeweils vorgefertigte Öffnungen, in die die einzelnen Borstenbüschel eingedrückt werden.There are basically different variants of how the bristle tufts separated from a bristle magazine are transported to the bristle holding part. The bristle holding member is otherwise either the brush body or a part of the finished brush, such as the brush head or a wafer, or, alternatively, a perforated plate or cassette with filling holes, from which the tufts can be pressed into another part or part of the finished brush , Furthermore, the orifice plate or cassette can also be used as a tool insert in an injection mold, so that the bristle ends, which protrude from the perforated plate or cassette, are overmolded. The bristle holding part each has prefabricated openings, in which the individual bristle tufts are pressed.
Eine erste, der zuvor angedeuteten Variante einer solchen Vorrichtung besteht darin, die vereinzelten Borstenbüschel direkt in ein Stopfwerk zu überführen, mittels welchem die Bünde in Löcher eines Borstenhalteteils gestopft bzw. gedrückt werden, z. B.
Die zweite Variante ist die in der vorgenannten Druckschrift beschriebene Variante, bei der vereinzelte Borstenbüschel über Röhrchen mittels einer Gasströmung frei durch diesen Kanal fliegen und damit eine Transportstrecke überbrücken. "Gasströmung" bedeutet im Zusammenhang mit der Erfindung, dass die Borstenbüschel entweder durch Druckluft oder durch Unterdruck durch den Kanal gefördert werden. Nachteil an dieser zweiten Variante ist, dass der Querschnitt des Büschels sehr genau auf den Querschnitt des Kanals abgestimmt sein muss. Ist nämlich das Borstenbüschel zu klein, so fliegen die Borsten einzeln durch den Kanal und erreichen relativ ungeordnet eine nach dem Kanal sitzende Aufnahmeplatte. Ist das Borstenbüschel im Querschnitt zu groß, strömt zu wenig Luft durch die Borstenbüschel hindurch, mit der Folge, dass das Borstenbüschel verklemmen kann. Eine gewisse Durchströmung des Borstenbüschels mit Luft ist nämlich vorteilhaft für die Reduzierung der Reibung gerade zwischen der Kanalwand und dem Borstenbüschel. Wichtig ist hier also, dass die Borstenbüschel nicht auf den späteren Verdichtungsgrad zusammengepresst werden, um im Röhrchen durch die Luft transportiert werden zu können. Deshalb sind nach dem Röhrchen meist sogar mehrere Verdichtungsschritte nötig.The second variant is the variant described in the aforementioned publication, in which isolated tufts of bristles via tubes by means of a gas flow freely fly through this channel and thus bridge a transport path. "Gas flow" in the context of the invention means that the bristle tufts either by compressed air or by negative pressure the channel be promoted. Disadvantage of this second variant is that the cross section of the tuft must be matched very closely to the cross section of the channel. Namely, if the bristle tufts too small, the bristles fly individually through the channel and reach a relatively disordered one sitting after the channel receiving plate. If the bristle tufts are too large in cross-section, too little air flows through the bristle tufts, with the result that the bristle tufts can become jammed. A certain flow of the bristle tuft with air is advantageous for the reduction of the friction just between the channel wall and the bristle tufts. It is therefore important that the bristle tufts are not pressed together to the later degree of compaction in order to be transported through the air in the tube. Therefore, after the tube usually even more compression steps are necessary.
Aufgabe der Erfindung ist es, eine Vorrichtung der eingangs genannten Art zu verbessern, um eine noch kontrolliertere Bewegung der Borstenbüschel zu erreichen.The object of the invention is to improve a device of the type mentioned in order to achieve an even more controlled movement of the bristle tufts.
Diese Aufgabe wird bei einer Vorrichtung der eingangs genannten Art dadurch gelöst, dass ein im Kanal durch die Gasströmung bewegtes Projektil vorgesehen ist, das in Förderrichtung der Borstenbüschel nach dem in den Kanal eingeführten Borstenbüschel angeordnet ist und das Borstenbüschel rückseitig kontaktiert und durch den Kanal zur Büschelaufnahme drückt.This object is achieved in a device of the type mentioned above in that a moving in the channel by the gas flow projectile is provided, which is arranged in the conveying direction of the bristle tufts after introduced into the channel bristle tufts and contacted the bristle tufts back and through the channel for tufts suppressed.
Im Gegensatz zum Stand der Technik, bei welchem die Borstenbüschel ausschließlich durch die Gasströmung bewegt werden, ist bei der Erfindung ein Projektil vorgesehen, das ein Zwischenteil bildet, welches durch die Gasströmung bewegt wird und welches mechanisch gegen das Borstenbüschel drückt und es durch den Kanal fährt. Die Büschel können durch die Erfindung bereits nach der Büschelabnahme kompakt sein oder auf die endgültige Kompaktheit gebracht und gegebenenfalls bereits so durch die Kanäle transportiert werden. Eine Nachverdichtung der Büschel nach der dem Kanal unmittelbar nachfolgenden Büschelaufnahme ist damit unnötig. Ferner gibt es keine losen Borsten im Kanal.In contrast to the prior art, in which the bristle tufts are moved exclusively by the gas flow, in the invention a projectile is provided which forms an intermediate part which is moved by the gas flow and which mechanically presses against the tufts of bristles and drives it through the channel , The tufts can be compact by the invention already after the tuft picking or brought to the final compactness and optionally already transported through the channels. A densification of the tufts after the channel immediately following tufts is therefore unnecessary. Furthermore, there are no loose bristles in the channel.
Das Projektil ist vorzugweise ausschließlich durch die Kanalwand geführt und ist mechanisch ansonsten in der Kanalwand frei beweglich, d. h. es ist keine mechanische Koppelung zu einem Antrieb über Zwischenbauteile vorhanden.The projectile is preferably guided exclusively through the channel wall and is mechanically otherwise freely movable in the channel wall, d. H. There is no mechanical coupling to a drive via intermediate components.
Das Projektil ist insbesondere ein zylindrischer, länglicher Körper oder eine Kugel, vorzugsweise aus Kunststoff.The projectile is in particular a cylindrical, elongated body or a sphere, preferably made of plastic.
Zwischen dem Projektil und der Innenseite der Kanalwand ist ein minimales Spiel, das kleiner als der Querschnitt einer beförderten Borste ist, vorzugsweise kleiner 0,04 mm, bevorzugt 0,02 mm. Es entsteht eine enge Passung zwischen Projektil und Wand, die keine Umströmung des Projektils erlaubt. Somit spaltet sich das Büschel vor dem Projektil auch nicht auf.Between the projectile and the inside of the channel wall is a minimum clearance, which is smaller than the cross section of a conveyed bristle, preferably less than 0.04 mm, preferably 0.02 mm. The result is a tight fit between projectile and wall, which does not allow flow around the projectile. Thus, the tuft does not split in front of the projectile.
Alternativ kann am Außenumfang des Projektils auch eine Dichtung angebracht sein, die gegen die Kanalwand drückt.Alternatively, on the outer circumference of the projectile, a seal may be attached, which presses against the channel wall.
Vorzugsweise sind mehrere Kanäle und für jeden Kanal ein eigenes Projektil vorhanden, sodass im Wesentlichen gleichzeitig die vereinzelten mehreren Borstenbüschel zu der Büschelaufnahmeeinheit transportiert werden.Preferably, a plurality of channels and a separate projectile are provided for each channel, so that substantially at the same time the separated several bristle tufts are transported to the tuft picking unit.
Ein Vorteil der vorliegenden Erfindung besteht vor allem auch darin, dass aufgrund des Projektils die Lage der Borsten eines Büschels in der Büschelaufnahmeeinheit definiert ist. Bisher konnte es nämlich vorkommen, dass einzelne Borsten mehr oder weniger weit in die Büschelaufnahme hineingedrängt wurden, sodass das rückseitige Ende des Borstenbüschels in der Büschelaufnahmeeinheit keine einheitliche Struktur ähnlich einer Stirnwand bildete. Dadurch, dass das Projektil an den einzelnen Borsten an ihrem rückseitigen Ende anliegt, hat das ganze Borstenbüschel eine einheitliche Struktur, wenn es in der Büschelaufnahmeeinheit sitzt.Above all, one advantage of the present invention is that, due to the projectile, the position of the bristles of a tuft is defined in the tuft picking unit. Previously, it could happen that individual bristles were more or less pushed into the tuft pickup, so that the back end of the tufts in the tuft picking unit did not form a unitary structure similar to an end wall. Because the projectile abuts the individual bristles at its rear end, the entire bristle tuft has a unitary structure when seated in the tuft picking unit.
Der zumindest eine Kanal kann vorzugsweise gekrümmt verlaufen, beispielsweise in Form eines Bogens. Gerade bei gekrümmten Kanälen ist es besonders überraschend, hier ein Projektil einzusetzen. Jedoch kann das Projektil von seiner Länge und von seinem Querschnitt so auf den Kanalquerschnitt und die Krümmung des Kanals sowie auf den Querschnitt der einzelnen Borsten abgestimmt werden, dass das Projektil problemlos die Borstenbüschel durch den gekrümmten Kanal transportiert, ohne selbst im Kanal zu klemmen.The at least one channel may preferably be curved, for example in the form of an arc. Especially with curved channels, it is particularly surprising to use a projectile here. However, the length and cross section of the projectile can be tuned to the channel cross section and the curvature of the channel as well as the cross section of the individual bristles so that the projectile easily transports the tufts of bristles through the curved channel without even clamping in the channel.
Der zumindest eine Kanal kann durch das Innere eines insbesondere gebogenen Röhrchens, vorzugsweise eines Metallröhrchens gebildet sein. Natürlich können darüber hinaus auch Kunststoffröhrchen verwendet werden, wobei hier aber sichergestellt sein muss, dass aufgrund des Gasdrucks keine Ausdehnung der Röhrchen derart erfolgt, dass ein Spiel zwischen Wand und Projektil entsteht, durch das Gas bläst, welches das Büschel vereinzelt. Dabei ist es optional möglich, das Projektil außenseitig mit einer Dichtung zu versehen. Das Kunststoffrohr als Kanal kann sich auch lokal etwas dehnen, um die geschlossen gegen das Projektil oder seine Dichtung zu drücken und um keinen Luftspalt zu haben. The at least one channel can be formed through the interior of a tube, in particular a bent tube, preferably a metal tube. Of course, in addition, plastic tubes can be used, but here it must be ensured that due to the gas pressure no expansion of the tubes takes place in such a way that creates a game between the wall and projectile, blowing through the gas, which separates the tufts. It is optionally possible to provide the projectile on the outside with a seal. The plastic pipe as a channel can also stretch locally to push the closed against the projectile or its seal and to have no air gap.
Die Übertragung der Energie, d. h. der Gasströmung, auf das Projektil kann durch einen Druckluftanschluss erreicht werden. Dieser Druckluftanschluss mündet beispielsweise rückseitig des Projektils in die Büschel-Transportvorrichtung. Die Anordnung ist derart, dass das Projektil rückseitig mit Druckluft beaufschlagt wird.The transmission of energy, d. H. the gas flow, on the projectile can be achieved by a compressed air connection. This compressed air connection opens, for example, the back of the projectile in the tuft-transporting device. The arrangement is such that the projectile is supplied with compressed air at the rear.
Das Projektil bewegt sich zwischen einer Ausgangsposition, in der es vor dem Transport der Borstenbüschel angeordnet ist, und einer Endposition, in der es das Borstenbüschel in die Büschelaufnahmeeinheit gedrückt hat. Um auf einfache Weise das Projektil zurück in die Ausgangsposition zu überführen, ist eine Rückführvorrichtung vorhanden. Diese ist druckluftbetrieben (Druckstoß oder Vakuum) und führt das Projektil von der Endposition zurück in die Ausgangsposition.The projectile moves between a home position where it is located prior to transporting the bristle tufts and an end position where it has pushed the tufts of bristles into the tuft picking unit. In order to easily transfer the projectile back to the starting position, a return device is present. This is compressed air operated (pressure surge or vacuum) and leads the projectile from the end position back to the starting position.
Die Büschelaufnahmeeinheit kann beispielsweise eine bewegliche Halterung mit einer mit dem Kanalende fluchtenden Öffnung besitzen (bei mehreren Kanälen entsprechende mehrere Öffnungen), wobei die Halterung zwischen einer Aufnahmeposition, in der die Öffnung die Borstenbüschel erhält, und einer davon entfernten Übergabeposition, in der das Borstenbüschel aus der Öffnung herausbewegt wird, beweglich ist. Die Halterung kann insbesondere hin- und herbeweglich oder rotierend ausgeführt sein, damit schnell herantransportierte Borstenbüschel zur weiteren Verarbeitung taktweise wegbewegt werden.The tuft picking unit may, for example, have a movable support with an opening aligned with the channel end (a plurality of openings corresponding to a plurality of channels), the support being disposed between a receiving position in which the opening receives the bristle tufts and a transfer position remote therefrom in which the bristle tufts the opening is moved out, is movable. The holder can in particular be designed to be movable back and forth or rotating, so that rapidly transported bristle tufts are moved away in cycles for further processing.
In diesem Zusammenhang kann die Halterung mehrere nacheinander an die Kanalenden heranführbare Öffnungen besitzen und so bewegt werden, dass bei der Bewegung der befüllten Öffnung in die Übergabeposition bereits eine freie Öffnung zum Kanal hin bewegt wird, die entweder der nächsten Befüllung dient und/oder nur der Einleitung von Druckgas zum Zurückbewegen des Projektils.In this context, the holder may have several in succession to the channel ends voranführbare openings and be moved so that during the movement of the filled opening in the transfer position already a free Opening is moved towards the channel, which serves either the next filling and / or only the introduction of compressed gas to move back the projectile.
Die zuvor erwähnte Rückführvorrichtung lässt sich an die Halterung derart ankoppeln, dass nach Abtransport der befüllten Öffnung vom Kanalende aus Druckluft gegen das sich am Kanalende befindende Projektil beaufschlagbar ist.The aforementioned return device can be coupled to the holder such that after removal of the filled opening from the channel end of compressed air against the located at the channel end projectile can be acted upon.
Die Druckluftanschlüsse der Rückführvorrichtung münden beispielsweise an freien Öffnungen in der Halterung, also unter Umständen an Öffnungen, die als Nächstes mit Borstenbüscheln befüllt werden. Damit müssen die Druckluftanschlüsse sehr wenig bewegt werden, denn die Halterung stellt ein Zwischenteil zwischen dem Ende des entsprechenden Kanals und dem Druckluftanschluss dar. Beispielsweise muss der Druckluftanschluss nur etwas axial zu der Halterung hinbewegt werden, wenn das Projektil zurückbewegt werden soll.The compressed-air connections of the return device open, for example, at free openings in the holder, that is to say at openings which are next filled with bristle tufts. Thus, the compressed air connections must be moved very little, because the holder is an intermediate part between the end of the corresponding channel and the compressed air connection. For example, the compressed air connection must be moved only slightly axially to the holder when the projectile is to be moved back.
Eine alternative Rückführvorrichtung wird dadurch erreicht, dass die Rückführvorrichtung eine Wechseleinheit für Projektile aufweist, wobei die Wechseleinheit das Projektil in seiner Endposition außerhalb des zugeordneten Kanals in die Ausgangsposition taktet. Damit sind die Kanäle sofort wieder frei für das Zuführen weiterer Büschel, und außerhalb der Kanäle werden die Projektile wieder zurückbewegt. Insbesondere kann dabei eine Wechselplatte verwendet werden, z.B. ein Drehteller, der in einem oder mehreren Schritten die Projektile zurücktaktet.An alternative return device is achieved in that the return device comprises an exchange unit for projectiles, wherein the exchange unit clocks the projectile in its end position outside the associated channel to the starting position. Thus, the channels are immediately free again for feeding further tufts, and outside the channels, the projectiles are moved back again. In particular, a replaceable plate may be used, e.g. a turntable that clocks back the projectiles in one or more steps.
Eine Option, die Halterung besonders einfach und funktionssicher auszuführen, ist ein Drehteller. Ein solcher Drehteller hat an seinem Umfang verteilt mehrere Öffnungen oder trägt Halteplatten mit mehren Öffnungen, die dann befüllt werden.One option to make the holder particularly simple and reliable is a turntable. Such a turntable has distributed over its circumference several openings or carries holding plates with several openings, which are then filled.
Für jede Öffnung in der Büschelaufnahmeeinheit bzw. der Halterung ist gemäß einer Variante der Erfindung ein beweglicher Stift vorgesehen, der das Borstenbüschel aus der Öffnung der Büschelaufnahmeeinheit bzw. der Halterung herausdrückt. Die Übergabe in ein anschließendes Teil erfolgt also rein mechanisch, damit die perfekte Geometrie des Borstenbüschels, mit der es in der Büschelaufnahmeeinheit sitzt, weiter beibehalten werden kann.According to a variant of the invention, a movable pin is provided for each opening in the tuft picking unit or the holder, which pushes out the tufts of bristles from the opening of the tuft picking unit or the holder. The transfer to a subsequent part is therefore purely mechanical, so that the perfect geometry of the bristle tufts, with which it sits in the tuft pickup unit, can be further maintained.
Vorzugsweise wird über diesen Stift oder, bei mehreren Borstenbüscheln, über diese mehreren Stifte das oder die Borstenbüschel bereits in das Borstenhalteteil gedrückt, welches Teil der fertigen Bürste ist. Wie gesagt, das Borstenhalteteil kann ein Kopf einer Bürste, ein Bürstenkopf oder beispielsweise ein Halteplättchen sein.Preferably, via this pin or, in the case of several bristle tufts, the tuft or tufts are already pressed into the bristle holding part via these several pins, which part is part of the finished brush. As stated, the bristle holding member may be a head of a brush, a brush head or, for example, a holding plate.
Im Folgenden werden vorteilhafte Optionen dargestellt, die das Beladen des Kanals mit Borstenbüscheln beschreiben.In the following, advantageous options are described, which describe the loading of the channel with bristle tufts.
Das Projektil kann dabei in seiner Ausgangsstellung in einem Projektilsitz aufgenommen sein, der in der Transportvorrichtung nach einer Ladeeinheit für vereinzelte Borstenbüschel angeordnet ist. Die Ladeeinheit transportiert das Borstenbüschel zum Kanalanfang. Der Kanalanfang wird also durch denjenigen Teil des Kanals definiert, in den die Borstenbüschel eingesetzt werden.The projectile can be accommodated in its initial position in a projectile seat, which is arranged in the transport device for a loading unit for isolated bristle tufts. The loading unit transports the bristle tufts to the beginning of the channel. The channel beginning is thus defined by that part of the channel into which the bristle tufts are inserted.
Der Projektilsitz lässt sich reversibel zu und weg vom Kanalanfang verstellen. Damit ist in der Ausgangsstellung des Projektilsitzes durch den beweglichen Projektilsitz Platz geschaffen, um die Borstenbüschel insbesondere seitlich zum Kanalanfang zuzustellen. Nach Bestückung des Kanals mit einem Borstenbüschel wird der Projektilsitz in Richtung Kanalanfang verstellt.The projectile seat can be reversibly adjusted to and away from the beginning of the channel. This space is created in the initial position of the projectile seat by the movable projectile seat to deliver the bristle tufts in particular laterally to the channel beginning. After fitting the channel with a bristle tuft, the projectile seat is moved in the direction of the beginning of the channel.
Der Projektilsitz besitzt z. B. eine Führung mit einem Projektilanschlag, an welchem eine Druckleitung mündet. Sobald das Projektil den Projektilanschlag erreicht hat, ist es in der Ausgangsposition, die damit definiert ist. Durch den Projektilsitz lässt sich eine gute Dichtigkeit erreichen, sodass bei Druckbeaufschlagung die gesamte Energie auf das Projektil übertragen wird.The projectile seat has z. B. a guide with a projectile stop on which a pressure line opens. Once the projectile has reached the projectile stop, it is in the starting position defined with it. Due to the projectile seat, a good tightness can be achieved, so that all the energy is transferred to the projectile when pressurized.
Die Führung am Projektilsitz kann ein vorderseitiges Ende haben, welches an das rückseitige Ende des bestückten Borstenbüschels angrenzt und beim Zustellen des Projektilsitzes zum Borstenbüschel das Borstenbüschel in den Kanal drückt. Damit hat der Projektilsitz eine Doppelfunktion, er nimmt das Projektil auf und drückt kurz vor Druckbeaufschlagung des Projektils das Borstenbüschel in den Kanal, sodass das Borstenbüschel vorderseitig geführt ist, bevor noch das Projektil auf es einwirkt. Der Kanalanfang und/oder die Führung können an ihren dem Borstenbüschel zugewandten Ende eine trichterförmige Erweiterung haben, um auch die randseitigen Borsten eines Büschels zu haltern und sie nach innen zu drücken, damit das Borstenbüschel kompakt ist.The guide on the projectile seat may have a front end which abuts the back end of the tufted bristle tuft and pushes the bristle tuft into the channel upon delivery of the projectile seat to the bristle tuft. Thus, the projectile seat has a dual function, he takes on the projectile and presses shortly before pressurization of the projectile, the bristle tufts in the channel, so that the bristle tufts is guided on the front, before the projectile still acts on it. The channel beginning and / or the guide can have a funnel-shaped extension at their end facing the bristle tufts in order to also support the edge-side bristles of a tuft and press them inwards, so that the tufts of bristles are compact.
Die Ladeeinheit lässt sich als seitlich in den Kanal verfahrbare Platte mit einem Aufnahmeloch für das Borstenbüschel ausführen. Vorzugsweise sind mehrere Aufnahmelöcher für Borstenbüschel vorhanden, die mit zugeordneten Kanälen und Projektilen fluchten, wenn die Platte in der sogenannten Übergabeposition ist. Die Platte hat Öffnungen, die so groß sind, dass das Projektil durch die Öffnung hindurchbewegt werden kann. Damit ist es gegebenenfalls möglich, die Ladeeinheit in der Übergabeposition zu belassen, wenn das Projektil vom Ventilsitz weg in den Kanal bewegt wird. Die Ladeeinheit kann aber auch weggefahren werden, bevor der Projektilsitz zugestellt wird. Die Ladeeinheit ist also z. B. eine Art Zwischenplatte zwischen Kanalanfang und dem Projektilsitz.The loading unit can be run as a laterally in the channel movable plate with a receiving hole for the bristle tufts. Preferably, a plurality of bristle tuft receiving holes are provided which are aligned with associated channels and projectiles when the plate is in the so-called transfer position. The plate has openings that are large enough to allow the projectile to pass through the aperture. Thus, it may be possible to leave the loading unit in the transfer position when the projectile is moved away from the valve seat into the channel. The loading unit can also be moved away before the projectile seat is delivered. The loading unit is so z. B. a kind of intermediate plate between the beginning of the channel and the projectile seat.
Die vorliegende Erfindung betrifft ferner ein Verfahren zum Erzeugen von Borstenfeldern für Bürsten, insbesondere Zahnbürsten, mit den folgenden Schritten:
- Vereinzeln von Borstenbüscheln aus einem Borstenmagazin,
- Bewegen der vereinzelten Borstenbüschel zu einer Büschel-Transportvorrichtung, die wenigstens einen Kanal aufweist,
- Vorsehen eines Projektils,
- Bestücken des Kanals mit dem Borstenbüschel, und
- Bewegen des Projektils durch den Kanal und dadurch Transport des Borstenbüschels durch das bewegte Projektil zu einer Büschelaufnahmeeinheit mittels einer Gasströmung.
- Separating bristle tufts from a bristle magazine,
- Moving the singulated bristle tufts to a tuft transporting device having at least one channel,
- Providing a projectile,
- Equipping the canal with the bristle tufts, and
- Moving the projectile through the channel and thereby transporting the bristle tufts through the moving projectile to a tuft picking unit by means of a gas flow.
Zu betonen ist, dass das erfindungsgemäße Verfahren auch durch die zuvor im Zusammenhang mit der erfindungsgemäßen Vorrichtung beschriebenen Schritte und Merkmale erweitert und verbessert werden kann.It should be emphasized that the method according to the invention can also be extended and improved by the steps and features described above in connection with the device according to the invention.
Bei der erfindungsgemäßen Vorrichtung und dem erfindungsgemäßen Verfahren können auch Borstenbüschel transportiert werden, die Borsten mit auf einer oder auf beiden Seiten gespitzte Enden haben. Diese Anspitzung kann durch chemische und/oder mechanische Bearbeitung erfolgen. Gerade angespitze Borsten waren in der Vergangenheit schwer durch reine Luftstöße oder Vakuum zu transportieren. Das Projektil transportiert auch derartige Borstenbüschel zuverlässig, indem es z.B. gegen die angespitzen Borsten drückt.In the device according to the invention and the method according to the invention it is also possible to transport bristle tufts which have bristles with ends which are sharpened on one or both sides. This sharpening can be done by chemical and / or mechanical processing. Just sharpened bristles were difficult to transport in the past by pure air blasts or vacuum. The projectile also transports such Bristle tufts reliably, for example by pressing against the pointed bristles.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den nachfolgenden Zeichnungen, auf die Bezug genommen wird. In den Zeichnungen zeigen:
-
Figur 1 eine perspektivische Ansicht einer Büschelvereinzelungsvorrichtung, die bei der Erfindung eingesetzt wird, -
Figuren 2 bis 9 schematische Seitenansichten der erfindungsgemäßen Vorrichtung, die das erfindungsgemäße Verfahren ausübt, in acht aufeinanderfolgenden Schritten, die einen Zyklus darstellen, und -
eine alternative Ausführungsform in schematischer Seitenansicht.Figur 10
-
FIG. 1 a perspective view of a tuft separating device, which is used in the invention, -
FIGS. 2 to 9 schematic side views of the device according to the invention, which exercises the method according to the invention, in eight successive steps, which represent a cycle, and -
FIG. 10 an alternative embodiment in a schematic side view.
In
Der Schwenkarm 16 selbst kann entweder in die in
In
In
In den Projektilsitzen 26, d. h. in deren Öffnungen, sitzen Projektile 30, beispielsweise in Form von länglichen, zylindrischen Körpern oder Kugeln. Das rückseitige Ende jedes Projektils 30 liegt in der in
Jeder Projektilsitz 26 bildet somit im Inneren für das zugeordnete Projektil eine Führung 28, wobei sich die Führung 28 zum rückseitigen Ende des zugeordneten Borstenbüschels 20 hin trichterförmig aufweitet, wie in
Wie im Folgenden dann noch erläutert werden wird, ist die Einheit aus allen Projektilsitzen 26 vorzugsweise gemeinsam in Richtung zu den Kanalanfängen 24 hin linear verschiebbar.As will be explained in the following, the unit of all
An den Enden der Kanäle 22 grenzt unmittelbar, d. h. ohne merklichen Abstand, eine Büschelaufnahmeeinheit 36, beispielsweise in Form einer Platte mit Öffnungen 38, 38' an. Die Öffnungen 38, 38' fluchten mit den Kanälen 22, genauer gesagt mit den entsprechenden Kanalenden.At the ends of the
Die Büschelaufnahmeeinheit 36 kann als Drehteller ausgeführt sein, der sich um eine Achse A drehen lässt, entweder reversibel oder umlaufend. An diesem Drehteller sind mehrere Gruppen von Öffnungen 38 vorgesehen, sodass durch Drehen und Weitertakten von einer Gruppe zur nächsten immer wieder eine Gruppe von Öffnungen 38, 38' seitlich von den Kanalenden weg und die nächste Gruppe zu den Kanalenden und in Flucht zu diesen bewegt werden kann.The
In
An einer zur Platte 42 entgegengesetzten Seite der Büschelaufnahmeeinheit, hier der Platte des Drehtellers, ist eine Ausrichtplatte 44 angrenzend angeordnet, an die wiederum unmittelbar ein Borstenhalteteil 46, hier in Form eines Plättchens, angrenzt. Das Borstenhalteteil 46 ist ein Teil der später fertigen Bürste und wird mit dem restlichen Bürstenkörper umspritzt oder verklebt, verschweißt oder verklipst oder ist der Bürstenkörper selbst (inklusive Stil, Hals und Kopf).On an opposite side to the
Die Ausrichtplatte 44 kann, was jedoch nicht zwingend erforderlich ist, schräg verlaufende Öffnungen besitzen, um beispielsweise später schräg verlaufende Borstenbüschel in dem Borstenhalteteil 46 zu positionieren. Auch können hier unter Umständen mehrere benachbarte Borstenbüschel 20 zu einem großen Borstenbüschel 20 vereinigt werden, das dann in das Borstenhalteteil 46 eingeschoben wird.The
Im nächsten, in
Wird jedoch die Ladeeinheit 17 wegbewegt, so erfolgt noch eine letzte Zustellbewegung der Projektilsitze 26 zu den Kanalanfängen 24, bis diese von den Projektilsitzen vorderseitig kontaktiert werden. Damit ist kein Spalt oder kein wirksamer Spalt mehr zwischen den Kanalanfängen 24 und den Projektilsitzen 26 vorhanden.However, if the
Anschließend werden über die Druckluftanschlüsse abrupt Luftstöße in die Projektilsitze 26 eingeleitet, sodass die Projektile 30 gegen die Rückseite der Borstenbüschel 20 prallen und diese Borstenbüschel 20 durch die Kanäle 22 drücken, ohne dass ein derartiger Gasstrom seitlich am Projektil vorbei auf das Büschel prallt, der das Büschel aufspaltet. Somit wird die gesamte Einheit an Borsten eines Büschels 20 gleichmäßig ohne Aufgabe des Büschelverbandes bis zum Kanalende und anschließend in die Büschelaufnahmeeinheit 36, d. h. die entsprechenden Öffnungen 38, gedrückt.Subsequently, air jets are abruptly introduced into the
Die Projektile 30 stoßen gegebenenfalls an die Stirnseite der Büschelaufnahmeeinheit 36 an, die minimal kleiner sein könnte als der Röhrchendurchmesser, insbesondere um weniger als 0,3 mm im Durchmesser. Dies ist jedoch nicht zwingend nötig. Alternativ hierzu ist es möglich, dass die Büschelaufnahmeeinheit 36 unter dem Ausgang der Öffnungen 38 eine Anschlagplatte besitzt. Wenn die Borstenbüschel 20 diese Anschlagplatte erreicht haben, können sie noch rückseitig etwas gegenüber der plattenartigen Büschelaufnahmeeinheit 36 vorstehen, sodass die Projektile 30 nicht an der Büschelaufnahmeeinheit 36 anstoßen, sondern aufgrund des Anschlags der Borstenbüschel vorderseitig noch etwas von der Büschelaufnahmeeinheit 36 beabstandet sind, wenn sie in ihrer in
Anschließend wird die Büschelaufnahmeeinheit 36, wie es in
Die besondere Transportvorrichtung erlaubt es, dass die Borstenbüschel so komprimiert, wie sie dem Magazin entnommen werden, auch in die Büschelaufnahmeeinheit 36 vom Projektil hineingefördert und anschließend nicht mehr weiter komprimiert werden müssen, bis sie schließlich in der Bürste verbaut sind. Hintereinander angeordnete, aus dem Stand der Technik bekannte Kompressionsplatten mit zunehmend kleiner werdenden Öffnungen, durch die die Büschel mittels Stößeln durchgetrieben werden, um sie zu komprimieren, sind überflüssig.The special transport device allows the bristle tufts to be compressed as they are taken from the magazine, also conveyed into the
In
Zuvor jedoch, in der in
In der in
In der in
Anschließend wird gemäß
Die bestückten Borstenhalteteile 46 werden dann von der Ausrichtplatte 44 entfernt, vorzugsweise indem die Einheit aus Borstenbüschel 20 und Borstenhalteteil 46 einfach herausgezogen wird. Üblicherweise werden dann die Borsten aller Borstenbüschel rückseitig (hier an der Oberseite) des Borstenhalteteils 46 thermisch miteinander verschmolzen.The loaded bristle holding
Falls die Öffnungen 38' kleiner als die Öffnungen 38 sind, muss dann die Büschelaufnahmeeinheit wieder verschwenkt werden, damit die Öffnungen 38 unter den Kanalenden liegen. Ansonsten können auch die Öffnungen 38' groß genug sein, um sie befüllen zu können, d. h., die Büschelaufnahmeeinheit muss nicht mehr verschwenkt werden. In dieser Stellung kann dann die nächste Gruppe an Borstenbüscheln 20 herantransportiert werden.If the openings 38 'are smaller than the
Die Kanäle 22 können natürlich am Kanalanfang und am Kanalende unterschiedliche Abstände zueinander haben oder anders positioniert sein. Wichtig ist jedoch, dass Borstenfelder, d. h. Gruppen von Borstenbüscheln 20 an der Büschelaufnahmeeinheit 36 erzeugt werden, die im Wesentlichen der Gruppierung entspricht, wie sie später in dem Borstenhalteteil der Bürste wiederzufinden ist. Jedoch können natürlich auch noch geringfügige Verschiebungen, Querbewegungen usw. stattfinden, wenn die Borstenbüschel 20 die Kanäle 22 und gegebenenfalls auch die Büschelaufnahmeeinheit 36 verlassen haben.Of course, the
Die Borsten eines Borstenbüschels 20 können angespitzt sein, und zwar an einem oder beiden Enden.The bristles of a
Eine alternative Rückführvorrichtung für die Projektile ist in
Damit die Borstenbüschel in der Anfangsstellung in die Kanäle 22 gelangen, muss ein Platz zwischen dem Drehteller 50 und dem Kanalanfang geschaffen werden. Im dargestellten Beispiel werden die flexibel ausgeführten Röhrchen an einem Befestigungsteil 52 angehoben, damit Platz zum seitlichen Zuführen der Ladeeinheit 17 da ist. Ansonsten kann der Rest der Vorrichtung so wie in der vorherigen Ausführungsform ausgestaltet sein.So that the bristle tufts reach the
Claims (15)
- A device for producing bristle arrays for brushes, in particular toothbrushes, having a cluster separating device (10) that removes individual bristle clusters (20) from a bristle magazine (12), and a cluster transport device that has at least one channel (22) through which a separated bristle cluster (20) is conveyed by means of a gas stream to a cluster receiving unit (36), characterized in that a projectile (30) that is moved in the channel (22) by the gas stream is provided, and is situated downstream, in the conveying direction of the bristle clusters (30), from the bristle clusters (20) that are inserted into the channel, and the projectile contacts the bristle cluster on the rear side and pushes it through the channel (22) toward the cluster receiving unit (36).
- The device according to Claim 1, characterized in that multiple channels (22) are present, and one projectile (30) is present for each channel (22), and/or the at least one channel (22) extends in a curve.
- The device according to one of the preceding claims, characterized in that the channel (22) is formed by a wall, preferably made of metal, that is not expandable by the gas pressure, and/or the channel is formed by the interior of a tube that is in particular curved.
- The device according to one of the preceding claims, characterized in that a compressed air connection is present, and at the rear side of the projectile opens into the transport device and acts on the projectile (30) with compressed air.
- The device according to one of the preceding claims, characterized in that a return device that is operated in particular by compressed air is present which transfers the projectile (30) from an end position, in which the bristle cluster is delivered to the cluster receiving unit (36), into a starting position.
- The device according to one of the preceding claims, characterized in that the cluster receiving unit (36) has a movable mounting with an opening (38) that aligns with the end of the channel, wherein the mounting is movable between a holding position, in which the opening contains the bristle clusters, and a transfer position, remote therefrom, in which the bristle cluster is moved out of the opening.
- The device according to Claim 6, characterized in that the mounting has multiple openings (38) that are approachable in succession at the end of the channel, and is moved in such a way that when the filled opening is moved into the transfer position, a free opening (38') is moved toward the channel (22).
- The device according to Claim 5 and additionally according to Claim 6 or 7, characterized in that the return device is coupled to the mounting in such a way that after the filled opening (38) is transported away from the end of the channel, compressed air may act on the projectile (30) that is present at the end of the channel; in particular, the compressed air connection of the return device opens into the mounting at a free opening (38'), wherein the mounting in particular is a rotary plate.
- The device according to one of Claims 5 to 7, to the extent referenced back to Claim 5, characterized in that the return device has an exchange unit for projectiles, in particular an exchange plate, wherein the exchange unit moves the projectile, in its end position outside the associated channel (22), into the starting position in a clocked manner.
- The device according to one of Claims 6 to 9, characterized in that for each opening (38) in the mounting that is fillable with a bristle cluster (20), a movable pin (40) is provided that pushes the bristle cluster (20) out of the opening (38) in the mounting, in particular into a bristle holding part (46) that forms part of the finished brush.
- The device according to one of the preceding claims, characterized in that the projectile (30) in its starting position is accommodated in a projectile seat (26) situated downstream, in the transport direction, from a loading unit (17) for a separated bristle cluster (20), wherein the loading unit (17) transports the bristle cluster (20) to the start (24) of the channel.
- The device according to Claim 11, characterized in that the projectile seat (26) is reversibly adjustable toward and away from the start (24) of the channel, and after the channel (22) is fitted with a bristle cluster (20) the projectile seat is reversibly adjustable toward the start (24) of the channel, and in particular the projectile seat (26) has a guide with a projectile stop (32) to which a pressure line opens, and/or the guide has a front end that is movable against the rear end of the bristle cluster (20) and pushes it into the channel (22).
- The device according to Claim 12, characterized in that the start (24) of the channel and/or the guide in the projectile seat (26) have/has a funnel-shaped expansion at the end facing the bristle cluster (20).
- The device according to one of Claims 11 to 13, characterized in that the loading unit (17) has a plate that is movable laterally with respect to the channel (22) and that has at least one receiving hole for the at least one bristle cluster (20), preferably multiple receiving holes for bristle clusters (20), which align with associated channels (22) and projectiles (30) when the plate is in the transfer position.
- A method for producing bristle arrays for brushes, in particular toothbrushes, characterized by the following steps:Separating bristle clusters (20) from a bristle magazine (12),Moving the separated bristle clusters (20) to a cluster transport device in which at least one channel (22) for each bristle cluster (20) is provided,Providing a projectile (30),Fitting the channel (22) with the bristle cluster (20), andMoving the projectile (30) through the channel (22) and transporting the bristle cluster (20) via the moved projectile (30) to a cluster receiving unit (36) by means of a gas stream.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2015/5689A BE1023055B1 (en) | 2015-10-26 | 2015-10-26 | Apparatus and method for producing bristle pads for brushes |
PCT/EP2016/075863 WO2017072197A1 (en) | 2015-10-26 | 2016-10-26 | Device and method for producing bristle arrays for brushes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3367843A1 EP3367843A1 (en) | 2018-09-05 |
EP3367843B1 true EP3367843B1 (en) | 2019-10-09 |
Family
ID=55221182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16788498.0A Active EP3367843B1 (en) | 2015-10-26 | 2016-10-26 | Device and method for producing bristle arrays for brushes |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3367843B1 (en) |
CN (1) | CN107072391B (en) |
BE (1) | BE1023055B1 (en) |
ES (1) | ES2765239T3 (en) |
TW (2) | TWI697302B (en) |
WO (1) | WO2017072197A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017125046A1 (en) * | 2017-10-26 | 2019-05-02 | Zahoransky Ag | Method and device for producing bristle fields for brushes and bristle making machine |
EP3747310A1 (en) * | 2019-06-07 | 2020-12-09 | The Procter & Gamble Company | Filament transportation device |
CN114869044B (en) * | 2022-05-26 | 2023-03-24 | 广州傲群刷业科技有限公司 | Full-automatic equipment for producing twisted wire brush |
CN115227027B (en) * | 2022-07-04 | 2024-01-26 | 深圳市默孚龙科技有限公司 | Brush silk bundle forming equipment |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0149996A3 (en) * | 1984-01-10 | 1987-10-21 | Schlesinger GmbH & Co. Maschinenbau KG | Method and machine for manufacturing brushes |
ES2060869T3 (en) * | 1989-06-24 | 1994-12-01 | Frisetta Gmbh | PROCEDURE AND DEVICE TO PRODUCE SOW FIELDS OR SOWS. |
DE3920769A1 (en) * | 1989-06-24 | 1991-01-10 | Fritz Rueb | Machine for producing bristle tufts |
DE69915180T2 (en) | 1998-07-14 | 2004-12-30 | Firma G.B. Boucherie N.V. | Method of making brushes and brush making machine for performing this method |
DE102008061389B4 (en) * | 2008-12-10 | 2012-06-28 | Frisetta Kunststoff Gmbh | Method for producing bristle fields by means of molds |
DE102008061384A1 (en) * | 2008-12-10 | 2010-06-24 | Frisetta Kunststoff Gmbh | Method and device for producing drill fields or bristle bundles |
DE102009013723A1 (en) * | 2009-03-20 | 2010-09-23 | Zahoransky Ag | Method and device for producing and providing filament bundles and bristle fields |
DE102010055686A1 (en) * | 2010-12-22 | 2012-06-28 | Zahoransky Ag | Device for manufacturing bristle fields for brushes, has two sub-plates formed in receiving plate, where each of multiple downstream holes of individual sub-plate has different surface textures and diameters |
EP2534974B1 (en) * | 2011-06-15 | 2015-04-29 | Braun GmbH | Method for producing a brush head |
-
2015
- 2015-10-26 BE BE2015/5689A patent/BE1023055B1/en not_active IP Right Cessation
-
2016
- 2016-10-26 WO PCT/EP2016/075863 patent/WO2017072197A1/en active Application Filing
- 2016-10-26 TW TW105134518A patent/TWI697302B/en active
- 2016-10-26 CN CN201680002304.9A patent/CN107072391B/en active Active
- 2016-10-26 ES ES16788498T patent/ES2765239T3/en active Active
- 2016-10-26 EP EP16788498.0A patent/EP3367843B1/en active Active
- 2016-11-07 TW TW105136071A patent/TW201815314A/en unknown
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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TWI697302B (en) | 2020-07-01 |
TW201815314A (en) | 2018-05-01 |
CN107072391A (en) | 2017-08-18 |
WO2017072197A1 (en) | 2017-05-04 |
EP3367843A1 (en) | 2018-09-05 |
ES2765239T3 (en) | 2020-06-08 |
TW201724990A (en) | 2017-07-16 |
BE1023055B1 (en) | 2016-11-16 |
CN107072391B (en) | 2018-12-28 |
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