DE102016114900B4 - Method of making paintbrushes and brushes - Google Patents

Abstract

An alternative method for producing brushes (6) is proposed, comprising the following method steps: - producing at least one bundle (1) of at least two bristles, - folding the bundle (1), so that in each case the two ends of the bristles point in the same direction Inserting the at least one bundle (1) into a bristle holder (3).

Description

The invention relates to a method for the production of paint brushes and a brush.

It is known from the prior art to produce brushes from bristles, in particular natural bristles of pigs, wherein a certain amount of bristles is combined into a bundle and introduced into a metal or plastic ferrule. The bristles are glued inside the ferrule; then this entire structure is connected to a stem, such as by gluing or by introducing a nail.

The object of the invention is to be able to provide an alternative production method for brushes, which in particular can also offer advantages in the mechanical production of brushes.

The problem is solved, starting from a method of the type mentioned, by the features of claim 1 and by the features of claim 12.

The measures mentioned in the dependent claims advantageous embodiments and modifications of the invention are possible.

• – Erstellung wenigstens eines Bündels von wenigstens zwei Borsten: Unter dem Begriff Borsten werden nicht nur Naturborsten, etwa tierischer Herkunft, verstanden, sondern es kann sich auch um synthetische Borsten oder um Mischungen aus Naturborsten und synthetischen Borsten handeln. In einem Bündel werden wenigstens 2, in der Regel jedoch wesentlich mehr als lediglich 2 Borsten zusammengefasst, wobei das Bündel an Borsten in der Regel maschinell ergriffen wird und zusammengehalten wird.
• – Falten des Bündels, sodass jeweils die beiden Enden der Borsten in die gleiche Richtung weisen: Jede Borste besitzt zwei Enden. Die Borsten können so gebogen werden, dass ihre Enden etwa in die gleiche Richtung zeigen. Bei diesem Faltvorgang wird also die Borste, ausgehend von einer in etwa geradlinigen Ausrichtung, gekrümmt und so gefaltet, dass die beiden Borstenabschnitte mit den jeweiligen Enden im Wesentlichen parallel oder fast parallel zueinander liegen können.
• – Einsetzen des wenigstens einen Bündels in eine Borstenhalterung: Schließlich ergibt das wenigstens eine Bündel zusammen mit der Borstenhalterung sowie einem Stiel den späteren Pinsel. Je nach Ausführungsform können insbesondere 2 oder wesentlich mehr Bündel verwendet werden. Denkbar sind im Übrigen zumidnest zwei Varianten, nämlich eine, bei welcher die Borstenhalterung bei der Fertigung mit einem Stiel verbunden wird und eine, bei welcher Borstenhalterung und Stiel einteilig ausgebildet sind. Dadurch, dass die Borsten gefaltet werden, kann sich grundsätzlich die Anzahl der benötigten Borsten halbieren, da für die spätere Funktion des Pinsels beide Borstenenden zur Verfügung stehen. Mit der Faltung und dem anschließenden Einsetzen kann bei der Fertigung ein maschineller Vorgang verbunden sein. Dieser Vorgang kann damit einhergehen, eine Halterung der Borsten in der Borstenhalterung herzustellen. Deshalb ermöglicht die Erfindung nicht nur, eine bloße Alternative zu bisherigen herkömmlichen Verfahren zur Pinselherstellung bereitzustellen, sondern es kann auch die maschinelle Verarbeitung und Fertigung vereinfacht werden. Zudem kann die Haltefähigkeit der Borsten bei derartigen Pinselns verbessert werden, da bei einem bloßen Verkleben oder Verklemmen geradlinig ausgerichteter Borsten es leicht dazu kommen kann, dass mit der Zeit Borsten ausfallen.

Accordingly, the manufacturing method according to the invention for the production of brushes comprises the following method steps:

• - Preparation of at least one bundle of at least two bristles: The term bristles not only natural bristles, such as animal origin, understood, but it may also be synthetic bristles or mixtures of natural bristles and synthetic bristles. In a bundle at least 2, but usually much more than just two bristles are summarized, the bundle of bristles is usually taken by machine and held together.
• - Folding the bundle so that the two ends of the bristles point in the same direction: Each bristle has two ends. The bristles can be bent so that their ends point approximately in the same direction. In this folding process, therefore, the bristle, starting from an approximately rectilinear orientation, curved and folded so that the two bristle portions with the respective ends can be substantially parallel or almost parallel to each other.
• - Inserting the at least one bundle in a bristle holder: Finally, the at least one bundle together with the bristle holder and a stem the later brush. Depending on the embodiment, in particular 2 or substantially more bundles can be used. Incidentally, two variants are conceivable, namely one in which the bristle holder is connected to a handle during manufacture and one in which the bristle holder and handle are integrally formed. Because the bristles are folded, the number of bristles required can generally be halved, since both bristle ends are available for the later function of the brush. With the folding and the subsequent insertion, a mechanical process can be connected during production. This process can be accompanied by making a holder of the bristles in the bristle holder. Therefore, not only does the invention make it possible to provide a mere alternative to conventional brush making methods, but also the machining and manufacturing can be simplified. In addition, the holding ability of the bristles in such brushes can be improved, since a mere sticking or jamming of rectilinearly aligned bristles can easily cause bristles to fail over time.

In a particularly advantageous manner, especially in a mechanical production, the folding and the insertion in a process step, in particular be carried out simultaneously. The folding can be done, for example, by pressing the bristles with a web which presses laterally on the respective bristles, takes them along and uses them in the bristle holder. Thus, machining can be faster and easier than if both steps had to be performed separately. In addition, basically less space is required in the brush production when two steps are combined.

In a further embodiment of the invention, the bundle or bundles can be held or fixed in the region of the fold in the bristle holder. As a result of the folding, the bristle acquires a V- or U-shaped form, so that it can be fixed or held in an advantageous manner in the region in which the fold is present with the bristle holder. This area effectively forms a new end of the folded bristle. The brush hairs can protrude more or less far out of the holder depending on the embodiment. The holding in the bristle position or fixing can basically be done in various ways. In particular, for this purpose, a fixing element such as a wire, a metal clip or a plate can be used. In addition, this wire, this clip or the plate can also be used for folding.

It has already been mentioned above that a kind of web can be used to exert a force on the bristles and thus to fold the bristles. Advantageously, as a web corresponding to a wire, a metal clip or a plate or the like can be used to press the side of the bristles to insert them into the bristle holder, so that the bristles remain there with this holding or fixing element.

Alternatively, it is also conceivable to hold the bristles in the region of the fold, ie on the side of the bristle holder by welding. This can be done either by welding the bristles to the bristle holder and / or by deforming the bristles at the folded end so that they can no longer slip out of the bristle holder. The holder via a fixing element advantageously allows the folding, insertion and holding or fixing can be done in one step, so to speak, 3 steps in a process. The welding in turn can be realized very reliably by machine (by a heating element, a laser or the like) and ensure a secure fit.

Possibly. It may be necessary in the metal clip, plates or wires to pay attention to the choice of materials in which are selected only about inert materials, which are not rusting and in the course of corrosion in contact with liquids such. B. leave residues that are undesirable. For example. Stainless steel could be chosen as appropriate material. It is also conceivable that the materials should also have antiallergic properties depending on the use of the brush, such. Brass.

Welding generally offers the advantage that no additional materials (in particular metal) are used in addition, but only a deformation of the bristle materials used anyway is provided. Thus, if necessary, costs for other materials can be saved.

Accordingly, depending on the embodiment of the invention, the holding or fixing during insertion into the bristle holder can be made. It is also conceivable that the process takes place according to the folding of the bristles. It is basically not ruled out that the bristles in the folded area z. B. fixed before insertion or especially after insertion with each other, are welded about.

As mentioned above, the bristles may be those made entirely of a synthetic material. In particular, the synthetic material may in turn be a plastic or a plastic mixture, wherein as plastics z. As polyesters or polyamides in question, in particular polybutylene terephthalate (PBT) or polyethylene terephthalate (PET). In this way one can obtain synthetic bristles so that no animal material is needed. On the one hand, the properties of the brushes can be selected especially well. Furthermore, it is also possible to produce pure vegan brush. It is also conceivable, however, to provide a mixture of natural bristles (animal bristles and synthetic bristles).

Depending on the intended use of the brush, it may be advantageous that the bristle ends do not run out blunt, but instead have a tapering course (conical shape) for a particularly defined application. Natural bristles usually have such a tapering course at one end. Synthetic bristles can be formed so that they have a tapering course at both ends. But it is also possible to use bristles without tapering course, if this is not required for the application accordingly.

In the production of the bristles, correspondingly different process steps can be carried out, which are generally preceded by the process steps described above. For example, bristles of synthetic material can be extruded or possibly sprayed. The corresponding advantages are depending on the physical properties of the material, which make different processing necessary. If necessary, the tapering course can be produced during the production or shaping of the bristles, both during the extrusion and during the spraying. If this is not the case, the bristles may also be sharpened at the ends in order to produce the desired conical shape. Subsequent sharpening may be necessary in particular if the bristles are initially present as very long thread-like structures and are then cut or cut to their actual length. In this way, for example, the production costs for the bristles can be reduced.

In order to make the process as simple as possible and to produce the bristles as evenly as possible, the bristles can be folded in particular in their middle with respect to the longitudinal direction. In this way arise in relation to the folding path 2 Same-length sections that are available later after insertion into the holder like individual bristles of the same length in the brush.

In a further development of the invention, a bristle holder may be provided which has at least one receiving opening. In this receiving opening / a corresponding bundle or possibly several bundles can be introduced. In general, it may be advisable to introduce exactly one bundle per receiving opening, which is then matched to the size of the receiving opening in relation to the number of bristles present therein. The receiving opening may in principle have any desired shape, for. B. round (circular or oval), square, etc. Depending on how tightly the brush should be occupied with bristles, the receiving openings can be correspondingly larger or smaller, or can also be adjusted how densely occupied the receiving openings on the surface the mounting device are arranged. Accordingly, for this purpose, the distance between the receiving openings can be varied depending on the application form. The number of bristles in total can be adjusted by how many receiving openings are provided in the mounting device and how many bristles are used in the receiving openings.

In a further development of the invention, it is particularly conceivable to provide a non-planar surface on the mounting device, so that the arrangement of the bristles or bristle bundles can assume virtually any surface shape. This is particularly advantageous when special brushes are to be made in which, for example, an application process is improved by such a surface design. Concerning. Such an arrangement of manufacture is particularly advantageous over an embodiment as a conventional brush according to the prior art, because here the bristles themselves either with respect to their length or. With respect to their displacement must be aligned against each other, which can be accomplished only with difficulty and what problems the holder would bring with it. Thus, advantageously, a virtually arbitrary gradation of the height of the bristles can be made.

As already mentioned, in particular each of the bundles can be folded by pressing the fixing element and at the same time inserted into the corresponding receiving opening. In addition, the fixing element can serve here to support the bristles or the bundle of bristles in the receiving opening.

Accordingly, a brush according to the invention is characterized in that it can be produced by the method according to the invention or by an exemplary embodiment of the invention, that is to say above all its properties, so that the advantages already mentioned can also be used here.

Embodiment:

An embodiment of the invention is illustrated in the drawings and will be explained in more detail below, giving further details and advantages. In detail shows:

1 a schematic representation of the manufacturing method for brush according to the invention.

The method according to 1 shows the following process steps:
In method step A, bundling of individual bristles takes place 1 , where the bristles 1 have a conical shape at both ends. In method step B becomes perpendicular to the bundle 1 a slide 2 led that against the bunch 1' presses while folding the bristles 1 performs. In the appropriate direction is a bristle holder 3 with receiving openings 4 , which are circular here. The tile 2 is complete with the bristle bundle 1' in this receiving opening 4 pressed so that the slide 2 completely disappears here. The tile 2 is elastic, so it fits with the receiving opening 4 comes into contact with it (essentially) elastically deformed and then when completely through the receiving opening 4 is pushed back, deformed back to its original state, so it according to the bristles 1 in the receiving opening 4 stops without them slipping out. The tile 2 is therefore slightly larger in diameter than the receiving opening 4 , The density of bristles 1 in the bundle is always chosen so that this the receiving opening 4 each completely complete. The bristle holder 3 also has a stem 5 on. Folding, inserting and holding thus take place in the same process step B. The assembled parts yield the brush 6 ,

LIST OF REFERENCE NUMBERS

1

bristles

1'

bunch

2

Tile

3

bristle holder

4

receiving opening

5

stalk

6

brush

A, B

steps

Claims (12)

Method for producing paintbrushes ( 6 ), comprising the following method steps: - creation of at least one bundle ( 1' ) of at least two bristles, - folds of the bundle ( 1 ), so that each of the two ends of the bristles point in the same direction, Inserting the at least one bundle ( 1 ) in a bristle holder ( 3 ). Process for the production of claim 1, characterized in that the folding and the insertion are carried out in a process step (B), in particular simultaneously. Manufacturing method according to one of the preceding claims, characterized in that the at least one bundle ( 1' ) is held in the region of the fold in the bristle holder and / or fixed, in particular with a fixing element ( 2 ), preferably with a wire, a metal clip or a plate and / or by welding. Manufacturing method according to one of the preceding claims, characterized in that the holding and / or fixing of the bristles during insertion into the bristle holder ( 3 ) and / or during folding. Manufacturing process according to one of the preceding claims, characterized in that the bristles ( 1 ) are made of a synthetic material, in particular a plastic and / or a plastic mixture. Manufacturing process according to one of the preceding claims, characterized in that bristles (at least in part) 1 ) are used, which have a tapering course at both ends. Method for the production according to one of the preceding claims, characterized in that during the production of the bristles ( 1 ) at least one of the following process steps is carried out: extruding the bristles and / or spraying the bristles and / or cutting the bristles and / or sharpening the bristles at both ends to produce a conical shape, and / or conical Extruding the bristles. Manufacturing process according to one of the preceding claims, characterized in that the bristles ( 1 ) are folded in their middle with respect to their longitudinal direction. Manufacturing process according to one of the preceding claims, characterized in that as a bristle holder ( 3 ) one with at least one receiving opening ( 4 ) provided holding device ( 3 ), in which the at least one bundle ( 1 ) in the at least one receiving opening ( 4 ) is used. Manufacturing method according to one of the preceding claims, characterized in that as a holding device ( 3 ) is used, which in the region in which the at least one receiving opening ( 4 ), has a non-planar surface, so that the bristles ( 1 ) and / or the bundles ( 1' ) can be arranged at different heights and / or graduated. Manufacturing method according to one of the preceding claims, characterized in that the at least one bundle ( 1' ) by pressing the fixing element ( 2 ) against the respective bundle ( 1' ) and / or into the corresponding receiving opening ( 4 ) is used. Brush ( 6 ), obtainable by a process for the preparation according to one of the preceding claims.

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