EP1684612B1 - Method and device for producing brushes with bristle bundles and knobs - Google Patents
Method and device for producing brushes with bristle bundles and knobs Download PDFInfo
- Publication number
- EP1684612B1 EP1684612B1 EP04797812A EP04797812A EP1684612B1 EP 1684612 B1 EP1684612 B1 EP 1684612B1 EP 04797812 A EP04797812 A EP 04797812A EP 04797812 A EP04797812 A EP 04797812A EP 1684612 B1 EP1684612 B1 EP 1684612B1
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- EP
- European Patent Office
- Prior art keywords
- injection
- brush body
- projections
- tufts
- bristles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
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Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
- A46B15/0016—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means
- A46B15/0032—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means with protrusion for polishing teeth
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/06—Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
Definitions
- the invention relates to a method for the production of brushes with bristle bundles as well as knobs of plastic, rubber or gummiartigem material.
- the invention relates to a device for the production of brushes with bristle bundles and knobs of plastic, rubber or gummiartigem material, with at least one injection molding machine for the production of brush bodies and nubs and with a stuffing device for the bristle bundles.
- Brushes are already known, in particular toothbrushes, which, in addition to the cleaning bristles, have rubber-like nubs which serve, for example, for gum massage or for polishing the teeth.
- Such brushes are made by first the brush body is sprayed with the bundle holes and then the nubs are sprayed in a second injection process. Finally, the bristle bundles are stuffed into the bundle holes.
- knobs and bundle holes In determining the bristle field, a certain minimum distance between knobs and bundle holes must be taken into account in order to allow the plug at all. After tamping the bundles of bristles they are sheared off, but this is only possible up to the length of the nubs, as they are otherwise damaged. Although individual knobs can also be displaced during shearing, which is complicated and limits the possibilities of shearing off. Also problematic is the rounding of the bristle bundle ends with grinding wheels, as in this case the bristles are bent and thereby engage the grinding wheels deeper than a Abscheraggregat. Pushing away the knobs to avoid damage is even more problematic. In addition, the rounding of the bristle bundles produces fine dust, which deposits on the rubber knobs and is difficult to remove.
- Toothbrushes which have a brush body with at least one directly connected, soft-elastic cleaning element.
- the brush body has a receptacle for connection to a carrier element to which bristles are attached.
- These toothbrushes are composed of two assemblies, the compound must withstand relatively high loads, which is particularly problematic in a version with detachable support member.
- the object is to provide a method and a device create, with which brushes with bristle bundles and nubs are easy to produce while the nubs are not damaged and / or contaminated.
- the knobs should be arranged comparatively close to the bristle bundles.
- the solution according to the invention with regard to the method is that first the bristle bundles are stuffed into a brush body and reworked as sheared, ground and / or polished, that then the stocked with bristle bundles brush body are inserted into an injection mold and then sprayed the knobs and with be connected to the brush body.
- the brush is conventionally equipped with bristle bundles and then processed the bristle field in the usual way, so in particular sheared and ground. Only then, this, equipped with bristle bundles brush is inserted into the injection mold, where then the nubs are injected and thereby connected to the brush body.
- the brush body serves both for the bristle bundles and for the nubs as a common carrier part.
- the bristle bundles can be produced conventionally using conventional brush-making machines.
- brush body can be fed to a tamping machine and equipped there with bristle bundles.
- the post-processing device for shearing and grinding can also be used unchanged as before. This contributes to a cost-effective production, since existing, widely used and proven machines can be used.
- knobs allow a largely independent design of the knobs.
- different embodiments such as pin-like knobs, broad or arcuate knobs can be injected.
- Other sprayed components can also be connected to the brush body.
- the nubs may be sprayed onto the brush body for splicing onto the brush body or may be injected into nub-receiving holes of the brush body.
- the brush body in addition to the bundle receiving holes on corresponding receiving holes for the knobs, which cause anchoring and thus a particularly good hold of the knobs on the brush body.
- the spraying of the studs on the brush body, ie directly on the brush body surface results in a firm connection, since both the brush body and the knobs are made of plastic material.
- the bristle bundles adjacent to the position of the knobs to be introduced are displaced when the bristle body with the displaced bristle bundles is fed to an injection mold for spraying the knobs and, if appropriate, the displacing means after inserting the brush body into the bristle Injection mold is withdrawn.
- the displacement of the bristle bundles is easier compared to the displacement of the stronger and less compliant nubs and allows a safe feeding the bristled brush body in the injection mold for the nubs.
- the invention is characterized in that an equipping device for equipping a bristled brush body is provided at least with nubs, and that the equipping device comprises an injection molding machine with an injection mold for spraying the nubs.
- An embodiment provides in this case that it has a displacement device for the bristle bundles and a transfer gripper for inserting the bristle bundles equipped brush body into the injection mold.
- the bristled brush body is inserted into the injection mold by means of the transfer gripper from a post-processing station in which the knobs are sprayed onto the brush body or injected into correspondingly provided stud receiving openings.
- the transfer gripper from a post-processing station in which the knobs are sprayed onto the brush body or injected into correspondingly provided stud receiving openings.
- the injection molding machine for spraying the knobs can be designed as a multi-component injection molding machine for spraying different knobs.
- the different nubs can differ in terms of color and / or shape.
- an injection molding machine is provided with an injection mold for spraying additional parts, such as a suction cup on or in the brush body equipped with bristle bundles.
- the multi-component injection molding machine can be designed both for spraying possibly different knobs as well as for spraying or molding at least one additional part.
- the optionally additionally provided parts can also be supplied as finished parts and then connected by injection molding with the brush body.
- a mounting device for attaching at least one additional be provided in the injection molding machine to be molded part.
- FIGS. 1 to 4 and 6 to 9 are each one to one Device for the production of brushes with bristle bundles and nubs belonging transfer gripper 1 shown, which holds a bristle bundles 2 bristled brush body 3.
- the transfer gripper 1 is used in each case for converting the brush body 3 of a in Fig. 14 1 and 2 to an injection molding machine 29 with an injection mold 4a (FIG. Figures 5 and 10 ) for spraying the pimples.
- the bristle field can be completely processed, sheared and ground, so that the nubs introduced after that are not hindered by these steps and take no damage.
- the device shown has a brush body feed 23 to a stuffing device 24, to which a finishing device 25 is connected. From this, the brush body equipped with in particular sheared and rounded at the ends bristles brush body with the transfer gripper 1 having transfer device 27 are transported to a subsequent mounting device 26.
- the mounting device 26 has in the exemplary embodiment a rotary table or turntable 28, in which additional parts, such as suction cups for attachment to the brush bodies, can be supplied. These additional, in each case mounted on the brush body parts can be additionally encapsulated in a downstream injection molding machine 29. In particular, there is the possibility that in the rotary table or turntable 28 nubs 18 are injected with the injection molding machine 29, as well as additional parts such as the suction cups.
- the injection molding machine 29 may be formed as a multi-component injection molding machine. This can be injected with different pimples and possibly also additional Parts. Furthermore, with a multi-component injection molding machine both the injection molding and an encapsulation of the additional parts can be made.
- a guide 5 for a Sp Drardgabel 6 is provided at the transfer gripper 1 ( Fig.1 to 4 . 6 to 9 ) at each case a guide 5 for a Sp Drardl 6 is provided.
- the Sp Drardard 6 can between one in the FIGS. 1, 2 . 6 and 7 illustrated rest position outside the bristle field and an engaging in the bristle field and individual bristle bundles 2 acting and displacing expansion position ( Fig. 3, 4 . 8, 9 ) are adjusted.
- the spreader fork 6 has chamfers 8, which displace the free ends of the bristle bundles 2 arranged in the loading region of the spreader fork 6 when the spreader fork 6 retracts into the bristle field in the insertion direction (Pf1).
- a bristle-free area 7 on the brush body 3 (FIG. Fig. 2, 4 . 7, 9 ) are provided, are to be mounted in the knobs.
- the brush body 3 may for this purpose have recesses into which the nubs are introduced. However, it is also possible to spray the nubs directly on the brush body surface.
- the brush body 3 with the displaced or laterally deflected bristle bundles 2 is supplied to the transfer gripper 1 of an injection mold 4a, wherein the bristle-free region 7 is guided via an outlet opening 9 for the rubber material of the nubs.
- the transfer gripper 1 can already before reaching the injection position, in which the brush body 3 at the free ends 10 of the outlet opening (s) 9 is applied ( Fig. 5 and 10 ) the Sp Dahlgabel 6 are retracted to facilitate the flush insertion of the brush body 3.
- the knobs can be molded onto the brush body 3.
- the brush body 3 can be implemented with the transfer gripper 1 in a further injection mold to inject more pimples, for example in a different color.
- FIGS. 1 to 5 each show an arrangement with a transverse to the bristle longitudinal direction in the bristle field retractable Sp Dahlgabel 6, while in the arrangement according to FIGS. 6 to 10 the spreader fork 6 in the longitudinal direction of the brush can be inserted into the bristle field.
- an injection mold 4b which has a receiving area 11 for a bristled brush body 3 and a spray nozzle 12 for injecting or injecting nubs on or in the brush body 3.
- the injection mold 4b has on its insertion side 13 a molding 14 as a displacement device.
- the molded part 14 tapers from the spray nozzle 12 to its free end at the insertion side 13.
- FIG. 13 shows a schematic representation of a device 15a according to the invention with a finishing device 16 for shearing, grinding and / or polishing the bristle bundles 2 of a bristled brush body 3 and with a transfer gripper 1 for transferring the brush body 3 from the finisher 16 to an injection molding machine 17, in which one or several nubs 18 on the brush body 3a or be injected.
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von Bürsten mit Borstenbündeln sowie Noppen aus Kunststoff, Gummi oder gummiartigem Material.
Außerdem bezieht sich die Erfindung auf eine Vorrichtung zur Herstellung von Bürsten mit Borstenbündeln sowie Noppen aus Kunststoff, Gummi oder gummiartigem Material, mit wenigstens einer Spritzgießmaschine zum Herstellen von Bürstenkörpern und von Noppen sowie mit einer Stopfeinrichtung für die Borstenbündel.The invention relates to a method for the production of brushes with bristle bundles as well as knobs of plastic, rubber or gummiartigem material.
In addition, the invention relates to a device for the production of brushes with bristle bundles and knobs of plastic, rubber or gummiartigem material, with at least one injection molding machine for the production of brush bodies and nubs and with a stuffing device for the bristle bundles.
Man kennt bereits Bürsten, insbesondere Zahnbürsten, die zusätzlich zu den Reinigungsborsten gummiartige Noppen aufweisen, die beispielsweise zur Zahnfleisch-Massage oder zum Polieren der Zähne dienen. Derartige Bürsten werden gefertigt, indem zunächst der Bürstenkörper mit den Bündellöchern gespritzt wird und anschließend werden in einem zweiten Spritzvorgang die Noppen gespritzt. Schließlich werden die Borstenbündel in die Bündellöcher eingestopft.Brushes are already known, in particular toothbrushes, which, in addition to the cleaning bristles, have rubber-like nubs which serve, for example, for gum massage or for polishing the teeth. Such brushes are made by first the brush body is sprayed with the bundle holes and then the nubs are sprayed in a second injection process. Finally, the bristle bundles are stuffed into the bundle holes.
Bei der Festlegung des Borstenfeldes muss ein bestimmter Mindestabstand zwischen Noppen und Bündellöchern berücksichtigt werden, um das Stopfen überhaupt zu ermöglichen. Nach dem Stopfen der Borstenbündel werden diese abgeschert, wobei dies jedoch nur bis zur Länge der Noppen möglich ist, da diese sonst beschädigt werden. Zwar können einzelne Noppen während dem Abscheren auch verdrängt werden, was jedoch aufwändig ist und die Möglichkeiten beim Abscheren einschränkt. Problematisch ist auch das Abrunden der Borstenbündelenden mit Schleifscheiben, da hierbei die Borsten umgebogen werden und dabei die Schleifscheiben tiefer eingreifen als ein Abscheraggregat. Ein Wegdrücken der Noppen, um Beschädigungen zu vermeiden, ist dabei noch problematischer. Zudem entsteht beim Abrunden der Borstenbündel feiner Staub, der sich auf den Gummi-Noppen ablagert und nur schwer entfernt werden kann.In determining the bristle field, a certain minimum distance between knobs and bundle holes must be taken into account in order to allow the plug at all. After tamping the bundles of bristles they are sheared off, but this is only possible up to the length of the nubs, as they are otherwise damaged. Although individual knobs can also be displaced during shearing, which is complicated and limits the possibilities of shearing off. Also problematic is the rounding of the bristle bundle ends with grinding wheels, as in this case the bristles are bent and thereby engage the grinding wheels deeper than a Abscheraggregat. Pushing away the knobs to avoid damage is even more problematic. In addition, the rounding of the bristle bundles produces fine dust, which deposits on the rubber knobs and is difficult to remove.
Man kennt bereits aus der
Derartige Bürsten werden gemäß der
Bei Zahnbürsten gemäß der
Aus der
Such brushes are according to the
In toothbrushes according to the
From the
Es besteht die Aufgabe, ein Verfahren und eine Vorrichtung zu schaffen, womit Bürsten mit Borstenbündeln und Noppen einfach herstellbar sind und dabei die Noppen nicht beschädigt und/oder verunreinigt werden. Zudem sollen die Noppen vergleichsweise nah den Borstenbündeln anordenbar sein.The object is to provide a method and a device create, with which brushes with bristle bundles and nubs are easy to produce while the nubs are not damaged and / or contaminated. In addition, the knobs should be arranged comparatively close to the bristle bundles.
Die erfindungsgemäße Lösung besteht hinsichtlich des Verfahrens darin, dass zunächst die Borstenbündel in einen Bürstenkörper gestopft und nachbearbeitet wie abgeschert, geschliffen und/oder poliert werden, dass anschließend die mit Borstenbündeln bestückten Bürstenkörper in eine Spritzgießform eingesetzt werden und dass dann die Noppen gespritzt und dabei mit dem Bürstenkörper verbunden werden.The solution according to the invention with regard to the method is that first the bristle bundles are stuffed into a brush body and reworked as sheared, ground and / or polished, that then the stocked with bristle bundles brush body are inserted into an injection mold and then sprayed the knobs and with be connected to the brush body.
Somit wird zunächst die Bürste konventionell mit Borstenbündeln bestückt und dann das Borstenfeld in gewohnter Weise bearbeitet, also insbesondere abgeschert und geschliffen. Erst danach wird diese, mit Borstenbündeln bestückte Bürste in die Spritzgießform eingesetzt, wo dann die Noppen gespritzt und dabei mit dem Bürstenkörper verbunden werden.
Der Bürstenkörper dient sowohl für die Borstenbündel als auch für die Noppen als gemeinsames Trägerteil.Thus, first the brush is conventionally equipped with bristle bundles and then processed the bristle field in the usual way, so in particular sheared and ground. Only then, this, equipped with bristle bundles brush is inserted into the injection mold, where then the nubs are injected and thereby connected to the brush body.
The brush body serves both for the bristle bundles and for the nubs as a common carrier part.
Besonders vorteilhaft ist bei dem erfindungsgemäßen Verfahren, dass das Herstellen der mit Borstenbündeln bestückten Bürste konventionell mit gängigen Bürstenherstellungsmaschinen erfolgen kann. Dabei können mit Bündellöchern versehene Bürstenkörper einer Stopfmaschine zugeführt und dort mit Borstenbündeln bestückt werden. Auch die Nachbearbeitungseinrichtung zum Abscheren und Schleifen kann unverändert wie bisher verwendet werden. Dies trägt mit zu einer kostengünstigen Produktion bei, da bereits vorhandene, vielfach eingesetzte und bewährte Maschinen verwendet werden können.
Durch das Spritzen und Verbinden der Noppen erst am Ende des Fertigungsvorgangs können die Noppen während des Stopfens der Borstenbündel und deren Bearbeitung auch nicht hinderlich sein und können so auch keinen Schaden nehmen. Darüber hinaus kommen die Noppen nicht mit abgescherten Borstenteilen und Schleifstaub in Berührung. Ein aufwendiges Entfernen solcher Ablagerungen von den Gummi-Noppen wird dadurch vermieden.
Durch das Spritzen der Noppen und dem dabei erfolgenden Anbringen am Bürstenkörper wird eine feste Verbindung der Noppen mit dem Bürstenkörper hergestellt. Insgesamt erhält man so eine aus einer Baueinheit bestehende, stabile Bürste.
Das Anbringen der Noppen nach dem Stopfen der Borstenbündel erlaubt zudem einen reduzierten Abstand zwischen Noppen und Borstenbündeln, was eine flexiblere Gestaltung des Borstenfeldes ermöglicht.In the method according to the invention, it is particularly advantageous that the bristle bundles can be produced conventionally using conventional brush-making machines. In this case provided with bundle holes brush body can be fed to a tamping machine and equipped there with bristle bundles. The post-processing device for shearing and grinding can also be used unchanged as before. This contributes to a cost-effective production, since existing, widely used and proven machines can be used.
By spraying and connecting the pimples only at the end of the Manufacturing process, the nubs during the stuffing of the bristle bundles and their processing also not be a hindrance and can take so no damage. In addition, the nubs do not come with sheared bristle parts and sanding dust in touch. A complex removal of such deposits from the rubber knobs is thereby avoided.
By spraying the knobs and thereby attaching to the brush body a firm connection of the knobs is made with the brush body. Overall, you get so a one-unit, stable brush.
The attachment of the nubs after the tamping of the bristle bundles also allows a reduced distance between nubs and bristle bundles, which allows a more flexible design of the bristle field.
Das Spritzen der Noppen ermöglicht eine weitgehend unabhängige Gestaltung der Noppen. Somit können unterschiedliche Ausführungsformen wie beispielsweise stiftartige Noppen, breite oder bogenförmig verlaufende Noppen gespritzt werden. Auch andere gespritzte Komponenten können mit dem Bürstenkörper verbunden werden.The spraying of the knobs allows a largely independent design of the knobs. Thus, different embodiments such as pin-like knobs, broad or arcuate knobs can be injected. Other sprayed components can also be connected to the brush body.
Die Noppen können zum Verbinden mit dem Bürstenkörper auf diesen aufgespritzt oder aber in Noppen-Aufnahmelöcher des Bürstenkörpers eingespritzt werden. Im letzteren Fall weist der Bürstenkörper neben den Bündel-Aufnahmelöchern auch entsprechende Aufnahmelöcher für die Noppen auf, die eine Verankerung und somit einen besonders guten Halt der Noppen an dem Bürstenkörper bewirken. Auch das Aufspritzen der Noppen auf den Bürstenkörper, also direkt auf die Bürstenkörper-Oberfläche ergibt eine feste Verbindung, da sowohl der Bürstenkörper als auch die Noppen aus Kunststoffmaterial bestehen.The nubs may be sprayed onto the brush body for splicing onto the brush body or may be injected into nub-receiving holes of the brush body. In the latter case, the brush body in addition to the bundle receiving holes on corresponding receiving holes for the knobs, which cause anchoring and thus a particularly good hold of the knobs on the brush body. Also, the spraying of the studs on the brush body, ie directly on the brush body surface results in a firm connection, since both the brush body and the knobs are made of plastic material.
Zum Spritzen der Noppen ist es zweckmäßig, wenn zumindest die der Position der einzubringenden Noppen am Bürstenkörper benachbarten Borstenbündel verdrängt werden, wenn der Bürstenkörper mit den verdrängten Borstenbündeln einer Spritzgießform zum Spritzen der Noppen zugeführt wird und wenn gegebenenfalls die Verdrängereinrichtung nach dem Einsetzen des Bürstenkörpers in die Spritzgießform zurückgezogen wird.
Das Verdrängen der Borstenbündel ist im Vergleich zum Verdrängen der stärkeren und weniger nachgiebigen Noppen einfacher möglich und erlaubt ein sicheres Zuführen der beborsteten Bürstenkörper in die Spritzgießform für die Noppen.For spraying the knobs, it is expedient if at least the bristle bundles adjacent to the position of the knobs to be introduced are displaced when the bristle body with the displaced bristle bundles is fed to an injection mold for spraying the knobs and, if appropriate, the displacing means after inserting the brush body into the bristle Injection mold is withdrawn.
The displacement of the bristle bundles is easier compared to the displacement of the stronger and less compliant nubs and allows a safe feeding the bristled brush body in the injection mold for the nubs.
Hinsichtlich der Vorrichtung ist die Erfindung dadurch gekennzeichnet, dass eine Bestückungseinrichtung zum Bestücken eines beborsteten Bürstenkörpers zumindest mit Noppen vorgesehen ist und dass die Bestückungseinrichtung eine Spritzgießmaschine mit einer Spritzgießform zum Spritzen der Noppen aufweist.
Es ergeben sich damit die bereits bei der Beschreibung des erfindungsgemäßen Verfahrens erläuterten Vorteile.With regard to the device, the invention is characterized in that an equipping device for equipping a bristled brush body is provided at least with nubs, and that the equipping device comprises an injection molding machine with an injection mold for spraying the nubs.
This results in the already explained in the description of the method advantages.
Eine Ausführungsform sieht dabei vor, dass sie eine Verdrängereinrichtung für die Borstenbündel sowie einen Übergabegreifer zum Einsetzen des mit Borstenbündeln bestückten Bürstenkörpers in die Spritzgießform aufweist.
Nach dem Bearbeiten der Borstenbündel wird der beborstete Bürstenkörper mittels dem Übergabegreifer von einer Nachbearbeitungsstation in die Spritzgießform eingesetzt, in der die Noppen auf den Bürstenkörper aufgespritzt oder in entsprechend vorgesehene Noppen-Aufnahmeöffnungen eingespritzt werden.
Um zu verhindern, dass beim Einsetzen des Bürstenkörpers in die Spritzgießform einzelne Filamente der Borstenbündel abgeknickt werden oder in den Spritzbereich für die Noppen gelangen, werden zumindest die der Noppen-Spritzposition benachbarten Borstenbündel mit einer Verdrängereinrichtung aus dem unmittelbaren Spritzbereich verdrängt.An embodiment provides in this case that it has a displacement device for the bristle bundles and a transfer gripper for inserting the bristle bundles equipped brush body into the injection mold.
After processing the bundles of bristles, the bristled brush body is inserted into the injection mold by means of the transfer gripper from a post-processing station in which the knobs are sprayed onto the brush body or injected into correspondingly provided stud receiving openings.
In order to prevent that when inserting the brush body in the injection mold individual filaments of the bristle bundles kinked be or get into the injection area for the knobs, at least the bristle bundles adjacent to the nub spraying position are displaced with a displacement device from the immediate injection area.
Nach einer Weiterbildung der Erfindung kann die Spritzgießmaschine zum Spritzen der Noppen als Mehrkomponenten-Spritzgießmaschine zum Spritzen unterschiedlicher Noppen ausgebildet sein. Die unterschiedlichen Noppen können sich dabei hinsichtlich der Farbe und/oder der Form unterscheiden.
Weiterhin besteht die Möglichkeit, dass eine Spritzgießmaschine mit einer Spritzgießform zum Spritzen zusätzlicher Teile, beispielsweise eines Saugnapfes an oder in den mit Borstenbündeln bestückten Bürstenkörper vorgesehen ist.
Die Mehrkomponenten-Spritzgießmaschine kann sowohl zum Spritzen gegebenenfalls unterschiedlicher Noppen als auch zum Spritzen oder Umspritzen wenigsten eines zusätzlichen Teiles ausgebildet sein.
Die gegebenenfalls zusätzlich vorgesehenen Teile können auch als fertige Teile zugeführt und dann durch Umspritzen mit dem Bürstenkörper verbunden werden. Dazu kann vor der oder den Spritzgießmaschine(n) eine Montageeinrichtung zum Anbringen wenigsten eines zusätzlichen, bei der Spritzgießmaschine zu umspritzenden Teiles vorgesehen sein.According to a development of the invention, the injection molding machine for spraying the knobs can be designed as a multi-component injection molding machine for spraying different knobs. The different nubs can differ in terms of color and / or shape.
Furthermore, there is the possibility that an injection molding machine is provided with an injection mold for spraying additional parts, such as a suction cup on or in the brush body equipped with bristle bundles.
The multi-component injection molding machine can be designed both for spraying possibly different knobs as well as for spraying or molding at least one additional part.
The optionally additionally provided parts can also be supplied as finished parts and then connected by injection molding with the brush body. For this purpose, in front of the or the injection molding machine (s) a mounting device for attaching at least one additional, be provided in the injection molding machine to be molded part.
Weitere Ausgestaltungen der erfindungsgemäßen Vorrichtung ergeben sich aus den Ansprüchen sowie den nachfolgend erläuterten Zeichnungen.Further embodiments of the device according to the invention will become apparent from the claims and the drawings explained below.
Es zeigt:
- Fig. 1
- einen Übergabegreifer mit einem von diesem gehaltenen Bürstenkörper und mit einer außerhalb des Borstenfeldes des Bürstenkörpers angeordneten Verdrängereinrichtung in Stirnseitenansicht,
- Fig. 2
- die Anordnung gemäß
in Seitenansicht,Figur 1 - Fig. 3
- die Anordnung gemäß
mit in das Borstenfeld eingefahrener Verdrängereinrichtung,Figur 1 - Fig. 4
- die Anordnung gemäß
in Seitenansicht,Figur 3 - Fig. 5
- den in eine Spritzgießform eingesetzten, beborsteten Bürstenkörper aus den
,Figuren 1 bis 4 - Fig. 6 bis Fig. 10
- eine Anordnung ähnlich
den Figuren 1 mit einer anders angeordneten Verdrängereinrichtung,bis 5 - Fig. 11
- eine Spritzgießform mit abgeschrägten Formteilen als Verdrängereinrichtung für die Borsten einer Zahnbürste,
- Fig. 12
- die
Anordnung gemäß Figur 11 mit in die Spritzgießform eingesetzter Bürste, - Fig. 13
- eine schematische Darstellung einer Vorrichtung mit einer Borstenbearbeitungsvorrichtung, einem Übergabegreifer und einer Spritzgießmaschine und
- Fig. 14
- eine schematische Darstellung einer Vorrichtung mit einer Stopf- und Endbearbeitungseinrichtung sowie einer Spritzgießmaschine.
- Fig. 1
- a transfer gripper with a brush body held by it and with one outside the bristle field the brush body arranged displacement device in front view,
- Fig. 2
- the arrangement according to
FIG. 1 in side view, - Fig. 3
- the arrangement according to
FIG. 1 with displacer retracted into the bristle field, - Fig. 4
- the arrangement according to
FIG. 3 in side view, - Fig. 5
- used in an injection mold, bristled brush body from the
FIGS. 1 to 4 . - FIG. 6 to FIG. 10
- an arrangement similar to the
FIGS. 1 to 5 with a differently arranged displacement device, - Fig. 11
- an injection mold with beveled moldings as a displacement device for the bristles of a toothbrush,
- Fig. 12
- the arrangement according to
FIG. 11 with a brush inserted in the injection mold, - Fig. 13
- a schematic representation of a device with a bristle processing device, a transfer gripper and an injection molding machine and
- Fig. 14
- a schematic representation of a device with a stuffing and finishing device and an injection molding machine.
In den
Die in
Insbesondere besteht die Möglichkeit, dass bei dem Rundtisch oder Drehteller 28 Noppen 18 mit der Spritzgießmaschine 29 gespritzt werden, ebenso zusätzliche Teile wie beispielsweise die Saugnäpfe.
Die Spritzgießmaschine 29 kann als Mehrkomponenten-Spritzgießmaschine ausgebildet sein. Damit können unterschiedliche Noppen gespritzt werden und gegebenenfalls auch zusätzliche Teile.
Weiterhin kann mit einer Mehrkomponenten-Spritzgießmaschine sowohl das Spritzgießen als auch ein Umspritzen der zusätzlichen Teile vorgenommen werden.In the
In particular, there is the possibility that in the rotary table or
The
Furthermore, with a multi-component injection molding machine both the injection molding and an encapsulation of the additional parts can be made.
An dem Übergabegreifer 1 (
Zwischen den verdrängten Borstenbündeln 2 ist an dem Bürstenkörper 3 jeweils ein borstenfreier Bereich 7 (
Between the displaced bundles of
Der Bürstenkörper 3 mit den verdrängten beziehungsweise seitlich ausgelenkten Borstenbündeln 2 wird mit dem Übergabegreifer 1 einer Spritzgießform 4a zugeführt, wobei der borstenfreie Bereich 7 über eine Austrittsöffnung 9 für das Gummimaterial der Noppen geführt wird. Je nach Art der Spritzgießform 4a und des Übergabegreifers 1 kann bereits vor Erreichen der Spritzposition, in der der Bürstenkörper 3 an den freien Enden 10 der Austrittsöffnung(en) 9 anliegt (
Die
In
Claims (13)
- Method of producing brushes having tufts of bristles and projections made of plastics, rubber or rubber-like material, characterised in that first of all the tufts (2) of bristles are fitted into a brush body (3) and finished, for example trimmed, ground and/or polished, the brush bodies (3) fitted with the tufts (2) of bristles are then placed in an injection mould (4a, 4b) and after that the projections (18) are injection moulded and at the same time attached to the brush body (3).
- Method according to claim 1, characterised in that the projections (18) are injection-moulded into or onto the brush body in projection receiving openings (20) in the brush body (3).
- Method according to claim 1 or 2, characterised in that at least the tufts (2) of bristles adjacent to the position of the projections (18) to be formed on the brush body (3) are displaced, in that the brush body (3) with the displaced tufts (2) is supplied to an injection mould (4a, 4b) for the injection of the projections (18) and optionally the displacing device is withdrawn after the brush body (3) has been placed in the injection mould (4a, 4b).
- Method according to one of claims 1 to 3, characterised in that projections of different designs, such as pin-like projections, broad or arcuate projections and/or other components are injection moulded and thereby attached to the brush body (3).
- Apparatus for producing brushes having tufts of bristles and projections made of plastics, rubber or rubber-like material, with at least one injection-moulding machine for producing brush bodies and projections and with a filling device for inserting the tufts of bristles, particularly for carrying out the method according to one of claims 1 to 4, characterised in that a fitting device (19) is provided, for fitting a bristle-filled brush body (3) at least with projections (18) and in that the fitting device (19) comprises an injection moulding machine having an injection mould (4a, 4b) for injection moulding the projections (18).
- Apparatus according to claim 5, characterised in that it comprises a displacement device for the tufts of bristles (2) and a transferring gripper (1) for placing the brush body (3) fitted with tufts of bristles (2) in the injection mould (4a, 4b).
- Apparatus according to claim 6, characterised in that the transferring gripper (1) comprises the displacement device, the displacement device being movably mounted on the transferring gripper (1) for extending into and withdrawing from the bristle area.
- Apparatus according to one of claims 5 to 7, characterised in that the displacement device is formed by chamfered mould sections (14), tapering towards the insertion end (13), in the brush body insertion area of the injection mould (4b), for injection-moulding the projections (18) .
- Apparatus according to one of claims 5 to 8, characterised in that the injection moulding machine for injection-moulding the projections (18) is constructed as a multi-component injection moulding machine for injection-moulding different projections.
- Apparatus according to one of claims 5 to 9, characterised in that an injection moulding machine is provided, having an injection mould for injection-moulding additional parts, e.g. a suction cup on or in the brush bodies (3) fitted with tufts (2) of bristles.
- Apparatus according to claim 10, characterised in that a multi-component injection moulding machine is formed, for injection-moulding optionally different projections (18) and for injection moulding or extrusion-coating at least one additional part.
- Apparatus according to one of claims 5 to 11, characterised in that in front of the injection moulding machine(s) is provided an assembly device for mounting at least one additional part that is to be extrusion-coated in the injection moulding machine.
- Product manufactured by a method according to one of claims 1 to 4, in particular using an apparatus according to one of claims 5 to 12.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10353541.1A DE10353541B4 (en) | 2003-11-14 | 2003-11-14 | Method and device for producing brushes with bundles of bristles and nubs |
PCT/EP2004/012778 WO2005048773A1 (en) | 2003-11-14 | 2004-11-11 | Method and device for producing brushes with bristle bundles and knobs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1684612A1 EP1684612A1 (en) | 2006-08-02 |
EP1684612B1 true EP1684612B1 (en) | 2008-12-31 |
Family
ID=34585161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04797812A Revoked EP1684612B1 (en) | 2003-11-14 | 2004-11-11 | Method and device for producing brushes with bristle bundles and knobs |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1684612B1 (en) |
DE (2) | DE10353541B4 (en) |
WO (1) | WO2005048773A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2551663A3 (en) * | 1983-09-14 | 1985-03-15 | Sinzo Tamura | Brush promoting the growth of hair |
DE3905043A1 (en) * | 1989-02-18 | 1990-08-23 | Stemme Otto | Body care brush |
DE9305163U1 (en) * | 1993-04-03 | 1993-07-01 | Lessmann Gmbh, 8867 Oettingen, De | |
US5628082A (en) * | 1995-03-22 | 1997-05-13 | Colgate-Palmolive Company | Toothbrush with improved efficacy |
WO2000064307A1 (en) * | 1999-04-22 | 2000-11-02 | Kao Corporation | Toothbrush |
DE10143673B4 (en) * | 2001-09-06 | 2014-03-13 | Braun Gmbh | A method of bristling a brush holder of a toothbrush having tufts made up of individual bristles |
DE10164336A1 (en) * | 2001-12-28 | 2003-07-17 | Trisa Holding Ag Triengen | Toothbrush and method of making such a toothbrush |
DE10216641A1 (en) * | 2002-04-15 | 2003-10-23 | Trisa Holding Ag Triengen | Molded plastic toothbrush has a bristle support inserted into a recess in the brush head and soft cleaning components attached to the head |
-
2003
- 2003-11-14 DE DE10353541.1A patent/DE10353541B4/en not_active Expired - Lifetime
-
2004
- 2004-11-11 EP EP04797812A patent/EP1684612B1/en not_active Revoked
- 2004-11-11 DE DE502004008792T patent/DE502004008792D1/en active Active
- 2004-11-11 WO PCT/EP2004/012778 patent/WO2005048773A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2005048773A1 (en) | 2005-06-02 |
DE10353541B4 (en) | 2017-11-30 |
EP1684612A1 (en) | 2006-08-02 |
DE502004008792D1 (en) | 2009-02-12 |
DE10353541A1 (en) | 2005-06-16 |
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