DE1757495C

DE1757495C - Round brush and method of making it

Info

Publication number: DE1757495C
Authority: DE
Inventors: Rueben B. Lakewood Ohio Warner (V.St.A)
Original assignee: Sherwin Williams Co
Current assignee: Sherwin Williams Co
Publication date: 1971-08-05

Description

1 21 2

■ Die Erfindung bezieht sich auf eine RundbUrate, Fig.3 eine Draufsicht auf den unteren FormteilThe invention relates to a RundbUrate, Fig.3 a plan view of the lower molded part

insbesondere eine umlaufend« Topf-, Becher-, Schei· entlang einer Linie 3-3 von F i g. 1,
: ben- oder Walzenbürste,.bei der die Borston in eine Fig.4 eine Draufsicht auf eine derartige Becherelastomere Schlitzmasse eingebettet sind, sowie auf bUrste nach Beendigung des Formvorgangs, so ciaii ein Verfahren zu ihrer Herstellung. ' s die Bürstenflüche des Werkzeugs zu sehen ist, und Verschieden gestaltete Bürsten, deren Borsten in Fig.5 einen vergrößerten Teilschnitt durch die einem Körper aus elastomerer Schutzmasse einge- BUrstenflache der zusammengesetzten geformten bettet sind, sind bereits bekannt. Bei der Herstellung Bechorbürste von F i g. 4 entlang deren L nie 5-5.
derartiger Bürsten tritt die Schwierigkeit auf, die In der Zeichnung ist die Herstellung eines bevor-Borsten im Bereich der Bürstenoberflllche wahrend io zugten Ausflihrungsbeispieis gcmüß der Erfindung, der Formgebung gleichmüßin verteilt zu halten, so und s:war eines becherförmigen zusammengesetzten daß die Borstenenden ebenfalls gleichmäßig über die BUrstenwerkzeugs erläutert. Es ist aber ersichtlich, Arbeitsfläche des hergestellten Gegenstands verteilt daß die Erfindung auch bei der Herstellung ähnlicher sind. Eine andere auftretende Schwierigkeit besteht zusammengesetzter Bürsten, wie beispielsweise Scheidann, daß die Bürste für eine gewisse Zeit einem 15 benbürsten oder Topfbürsten, angewendet werden Abrieb unterworfen werden muß, bevor sie für ihren kann. Eine untere Formmatrize 1 hat einen Innenvorgesehenen Zweck voll anwendbar ist. Da das raum 2 und eine axiale Gewindeöffnung 3 in ihrem äußere Ende der Borsten vollständig im Elastomer- Boden für einen noch zu erläuternden Zweck. Ein körper eingebettet ist, muß die Bürste vor ihrer vollen oberes Ringformteil 4 hat eine Mittelöffnung 5 und Einsatzfähigkeit eine gewisse Zeit an einem Werk- ao eine nach unten vorspringende Ringrippe 6, die in stück od. dgl. bürsten, um eine bestimmte Menge des den oberen Abschnitt eines in seinem Innenteil eine Elastomeren zwischen den BUrstenenden zu ent- umgedrehte Kegelstumpffläche aufweisenden Formfernen, damit die Enden z. B. etwa 0,3 cm vorstehen. raums 2 eingepaßt ist. Eine kegelstumpfförmige Da eine derartige Abriebzeit dem Käufer der Bürste innere Formmatrize 7 besitzt eine vertikale zylinnicht zumutbar ist, unterzieht üblicherweise der as drische Außentläche an ihrem oberen Abschnitt, die Hersteller vor dem Verkauf die Arbeitsfläche der verschiebbar in die radiale innere Fläche der Rippe 6 Bürste einem Abrieb, gewöhnlich mittels einer ange- eingepaßt ist.in particular a circumferential “pot, mug, and note” along a line 3-3 in FIG. 1,
: ben- or roller brush, in which the Borston are embedded in a Fig. 4 a plan view of such a cup elastomer slot compound, as well as on brush after completion of the molding process, so ciaii a method for their production. The brush surfaces of the tool can be seen, and differently designed brushes, the bristles of which in FIG. In the manufacture of the beaker brush from FIG. 4 along their L never 5-5.
In the drawing, the production of a bristle in the area of the brush surface during the example shown in the implementation of the invention is to keep the shape evenly distributed, so and s: was a cup-shaped composite that the bristle ends were also evenly distributed explained about the brush tool. It can be seen, however, that the work surface of the manufactured article is distributed that the invention are also more similar in manufacture. Another problem that arises is with composite brushes, such as Scheidann, that the brush must be subjected to abrasion for a period of time before it can be used for its use. A lower molding die 1 has an internal purpose that is fully applicable. Since the space 2 and an axial threaded opening 3 in their outer end of the bristles completely in the elastomer bottom for a purpose yet to be explained. A body is embedded, the brush must in front of its full upper ring molding 4 has a central opening 5 and usability for a certain time at a work ao a downwardly projecting annular rib 6, which in pieces or the like. Brush to a certain amount of the Remove the upper section of a truncated conical surface having an elastomer in its inner part between the brush ends to be inverted, so that the ends z. B. protrude about 0.3 cm. room 2 is fitted. A frustoconical Since such an abrasion time for the buyer of the brush inner mold 7 has a vertical cylinder is unreasonable, usually the As drical outer surface on its upper section, the manufacturer subjects the working surface of the brush slidable in the radial inner surface of the rib 6 before the sale Abrasion, usually by means of a fitted.

triebenen, drehbaren Drahtbürste, damit eine kleine Weitere Einzelheiten des Formaufbaus sind ausdriven, rotatable wire brush, so that a little more details of the mold construction are from

Menge des Elastomeren von der Arbeitsfläche der der folgenden Beschreibung der Verformung ersicht-Biirste entfernt wird. Eine derartige Behandlung 30 lieh.Amount of elastomer from the working surface of the brush shown in the following description of the deformation Will get removed. Such a treatment 30 borrowed.

erhöht naturgemäß die Fertigungskosten der Bürste, Eine Becherbürste mit insgesamt üblichem Aufbau, kann ferner nicht gleichmäßig vorgenommen werden, die eine in der Mitte gelochte Nabe 8, einen Blechda sie von der Erfahrung und Geschicklichkeit eines becher 9 und Borsten 10 aufweist, wird in die Form-Arbeiters abhängt, und verleiht der Bürste ein etwas matrize 1, wie abgebildet, eingesetzt, so daß der schlechteres Aussehen, obwohl sie für den Abnehmer 35.Becher9 hinreichend dicht gegen eine Schultern der besser einsatzfähig ist. Form abgedichtet ist. Die Formmatrize 7 wird so innaturally increases the manufacturing costs of the brush, a cup brush with an overall common structure, can also not be made evenly, which has a perforated in the center hub 8, a sheet metal Having the experience and skill of a mug 9 and bristles 10 will be in the form of a worker depends, and gives the brush a bit of a die 1, as shown, inserted so that the inferior appearance, although they are sufficiently tight against one of the shoulders of the 35.Becher9 is more operational. Form is sealed. The molding die 7 is so in

firfindungsgemäß soll daher eine Rundbürste ge- die Bürste eingesetzt, daß sie auf der Nabe 8 ruht schallen werden, bei welcher die Borsten im wesent- und an der radial inneren Fläche des Ringes aus liehen gleichmäßig über die Arbeitsfläche des Werk- Borsten 10 anliegt. Das obere Formteil 4 wird dann zcugs verteilt sind. Ferner sollen die Bürsten so her- 40 auf die Formmatrize 7 gesetzt, so daß die Unterseite gestellt werden können, daß das Arbeitsende der der Ringrippe 6 an den Bürstenenden anliegt.
Borsten ein kurzes Stück aus dem Elastomerkörper Gemäß Fig. 1 und 2 weist die Unterseite 12 der vorspringt und keine weitere Bearbeitung der Arbeits- Rippe 6 eine gezahnte WaiTelform auf, die eine fläche vor der Verwendung der Bürste für den vor- größere Anzahl kleiner, eng benachbarter pyramidengesehenen Zweck notwendig ist. Schließlich soll die 45 förmiger Vorsprünge besitzt, welche durch entBürste so beschaffen sein, daß das äußere Ende der sprechende enge Nuten getrennt sind, in die die Borsten gleichmäßig verteilt und in einer größeren Borstenenden eintreten. Auf diese Weise werden die Anzahl leicht vorspringender Abschnitte des Elasto- Borstenenden sicher und gleichmäßig verteilt an der merkörpers so eingebettet ist, daß die Bürste sofort Bürstenfläche während der anschließend vorgenomeingesetzt werden kann. 50 menen Verformung festgehalten.According to the invention, a round brush should therefore be used so that it rests on the hub 8, in which the bristles essentially and on the radially inner surface of the ring borrowed evenly over the working surface of the work bristles 10. The upper mold part 4 will then be distributed zcugs. Furthermore, the brushes should be placed on the molding die 7 in such a way that the underside can be positioned so that the working end of the annular rib 6 rests against the brush ends.
Bristles a short piece from the elastomer body According to FIGS. 1 and 2, the underside 12 of the protruding and no further processing of the working rib 6 has a serrated WaiTel shape, which is a smaller, narrow surface before the brush is used for the front larger number adjacent pyramidal purpose is necessary. Finally, the 45-shaped projections should have, which are designed by EntBürste so that the outer end of the speaking narrow grooves are separated into which the bristles evenly distributed and enter in a larger bristle end. In this way, the number of slightly protruding sections of the elasto bristle ends are safely and evenly distributed on the marker body is embedded in such a way that the brush can be used immediately during the brush surface. 50 menen deformation recorded.

Gegenstand der Erfindung ist eine Rundbürste, Ein länglicher Bolzen 13 wird durch die Mittelinsbesondere eine umlaufende Topf-, Becher-, Schei- öffnung S im Formteil 4, eine Mittelöffnung 14 der ben- oder Walzenbürste, bei der die Borsten in eine Formmatrize 7 vnd durch die Mittelöffnung der elastomere Schutzmasse eingebettet sind. Die erfin- Bürstennabe 8 eingesetzt und in die axiale Öffnung 3 dungsgemäße Rundbürste ist dadurch gekennzeich- 55 im Boden der Formmatrize 1 eingeschraubt. Die net, daß die Schutzmasse an der Arbeitsfläche der Unterseite des Bolzenkopfs 14 liegt an der Oberseite Bürste in eine größere Anzahl kleiner Vorsprünge der Formmatrize 7 dicht an, so daß die Formmatrize mit dazwischenliegenden Aussparungen verformt ist, in ihrer Lage festgehalten wird, während sie den wobei jeweils mehrere freie Borstenenden (Spitzen) Becher9 gegen die Schultern abgedichtet hält. Ein in jedem Vorsprung festgelegt sind. 60 Keil 15 wird durch einen Schlitz 16 im Bolzenkopf 14The subject of the invention is a round brush, an elongated bolt 13 is through the means in particular a circumferential pot, cup, disk opening S in the molded part 4, a central opening 14 of the ben- or roller brush, in which the bristles in a molding die 7 and through the central opening of the elastomeric protective mass are embedded. The inventive brush hub 8 is inserted and inserted into the axial opening 3 The round brush according to the invention is thereby marked 55 screwed into the bottom of the molding die 1. the net that the protective mass on the working surface of the underside of the bolt head 14 is on the top Brush into a large number of small projections of the molding die 7 tightly so that the molding die is deformed with intervening recesses, is held in place while it is each holding several free bristle ends (tips) cup 9 sealed against the shoulders. A are set in each ledge. 60 Wedge 15 is inserted through a slot 16 in the bolt head 14

Die Erfindung soll an Hand der Zeichnung näher geschoben, so daß das Formteil 4 fest gegen dieThe invention is to be pushed closer to the drawing, so that the molded part 4 firmly against the

erläutert werden. Formmatrize 1 gehalten wird.explained. Form die 1 is held.

Es zeigt Gemäß F i g. 1 und 3 hat die Formmatrize 1 zweiAccording to FIG. 1 and 3, the molding die 1 has two

Fig. 1 einen Vertikalschnitt durch eine Form- Ausschlagöffnungen 17 und 18 sowie mehrere flache einheit, in der sich eine Becherbürste befindet, um 65 radiale Nuten 19, die vom Außenrand der Formgemäß der Erfindung geformt zu werden, matrize 1 sich so weit nach unten erstrecken, daß sie Fig. 1 is a vertical section through a shape deflection openings 17 and 18 and several flat ones Unit in which there is a cup brush to 65 radial grooves 19 to be formed from the outer edge of the mold according to the invention, die 1 so far down that they extend

Fig. 2 eine Draufsicht auf den oberen Formteil mit der in der Form sitzenden Rippe 6 abschließen,Fig. 2 is a top view of the upper mold part with the rib 6 seated in the mold,

entlang einer Linie2-2 von Fig. 1, Bevor das obere Formteil 4 in die oben beschrie-along a line 2-2 of Fig. 1, before the upper mold part 4 into the above-described

Claims

3 · 43 · 4

beno position is brought about, a free-flowing elnst - an existing lump of water is released. More is poured into the mold and the excess gas can penetrate through the grooves 19. After the mold has finally softened, which has also been formed, sealed and secured in the mold, the elastomeric material is ventilated which can easily be removed from mere to a desired height, usually 5 of the finished brush,
so strong that it is easily elastically deformable. For the production of a preferred polyform is then poured and the finished urethane, toluene diisocyanate is removed from it with a polybrush. A ring recess 20 in ester or a polyether converted into a polyurethane with the molding die 7 and the knockout openings 17 long chain. By adding and 18 are provided to facilitate the opening of the water to the reaction mixture, if necessary, a cross-linking of the mold, but with many elastomer or polyurethane chains, carbon types and the use of correct separating materials are released, and dioxide, which serves as a foaming agent, is released no stronger adhesion of the molded parts. The following composition is suitable:

As from the previous description ciewichticilu

is _visible , the formed composite resembles 15 _, 1fM, »

Brush shown in FIG. 4 and 5 is shown, heavily the polyester · »". "

• Original cup brush in its shape only with toluene diisocyanate 35.0

the exception that the ring of the bristles 10 is now water ² < ⁴

in an elastically deformable elastomer body N-Nethylmorpholine 1.3

21 is embedded. Furthermore, the »oivcerin munoricinoleate 1.»

Brush a shaped work surface that has a larger ulcerin monoricinoicat

Number of closely spaced, intersecting elasto- Other suitable materials are foamed

has mi-ribs 22 and 23, which are about 0.5 cm epoxies and vinyl plastisols. You own against

aiis protrude from the main elastomer body, and those over the foamed elastomers the additional

overall evenly distributed ends of the bristles 25 advantage that they are lighter and less material

included (see. Fig. 5). These bristle ends can be required for a given brush urolie. The

therefore, a workpiece needs to be elastomers in the desired manner does not necessarily look up

work as soon as the brush is on the workpiece one to extend all the way to the hub. The ribs or

acts without prior abrasion of the brush other projections on the brush surface can

work surface must be made. The so 30 evenly by z. B. i), separated by 3 cm

Brushes manufactured are therefore in this regard and about 0.15 to about 0.6 cm deep. Instead of

more uniform and have a better appearance. an initially liquid elastomer can also

It can be seen that instead of the above-described solid, but flowable, unhardened natural

waffle shape of the ribs on the work surface and synthetic rubbers are used

surface of the brush also has a different shape in question 35, which softens through heat and through a

comes, z. B. closely spaced radial ribs, closely suitable foaming agent brought to foam

adjacent circumferential ribs and a larger number can be, after which the material subsequently

closely spaced individual protrusions or fingers. is cured to the desired elasticity. In any case, the brush tips are formed from recesses in the molding surface of the molding rib 6 40

included and evenly distributed by this patent claims:
held during the deformation. This is special

advantageous when bristles are used 1. Round brush, especially all-round pot,

be because their local crowding a cup, disc or roller brush, in the

is a common difficulty, however, the bristles are encased in an elastomeric protective compound.

advantages even when curved bristles are embedded, characterized

be turned. that the Schutzniasse (21) on the work surface

A wide variety of elastomers can be used in a larger number of smaller brushes what is only of the desired jumps (22, 23) with intermediate properties the brush depends. Often a 50 savings is deformed, each with several Elastomer is preferred, which is foamed free bristle ends (tips) in each protrusion can be set to a slightly larger relative bristle movement.

when using the brush and a gradual 2. Brush according to claim 1, thereby

Lichen abrasion of the elastomer between the bristles shows that the projections (22, 23) on the

end when these wear out, allow. There 55 protective mass (21) closely adjacent, narrow riI-

For example, refer to U.S. Patent 3,076,219 or form crossed ribs.

grasslands. This contains information about various 3rd brush according to claims I and 2, there-

suitable brush bristles, on plastics for characterized in that the elastomer one

Deformation, via fillers, which is the plastics polyurethane, which is a larger number smaller

can be added so that their abrasion resistance contains 60 cells.

to increase, and abrasives that can be added to the plastic 4. Brush according to Claims 1 to 3, if desired. characterized in that the bristles are straight. Polyurethanes are particularly suitable for many purposes and are made of wire,
above all the types of polyurethane rubber and the 5. Process for producing a brush from foamed elastomer polyurethanes. The latter can 65 the preceding claims, characterized in that the bristles (10) are introduced in a three-dimensional form, the reaction part form (1,4,7) in which they are rooted in the Form runs under foams, which through lateral ends between two socket parts (8,9,

ϊ 757 49δ

10) are clamped with their outer free ends to a ring section (6) of the molded part (4) that is used to create the workspace the brush is provided with a larger number of shallow recesses (grooves) in order to take up the bristle ends so that the bristles (10) held in their predetermined position after which the plastic compound (21) is introduced around and between the bristles and is shaped in such a way that the bristles are supported with their ends slightly out of the Main body (21) of the molded plastic compound protrude into the projections (22, 23).

6. Mold for the production of a brush according to claims 1 to 4 according to the method according to claim 5, characterized in that the three-part mold (1, 4, 7) on the ring portion (6) has an inner surface (12) with a larger Number of flat recesses (grooves) is provided on which the outer ends of the bristles (10) rest in order to hold them evenly distributed during the deformation in the mold.

1 sheet of drawings