DE913698C - Device for producing bristles from synthetic resin - Google Patents

Device for producing bristles from synthetic resin

Info

Publication number
DE913698C
DE913698C DER3411D DER0003411D DE913698C DE 913698 C DE913698 C DE 913698C DE R3411 D DER3411 D DE R3411D DE R0003411 D DER0003411 D DE R0003411D DE 913698 C DE913698 C DE 913698C
Authority
DE
Germany
Prior art keywords
synthetic resin
bristles
cutterhead
conveyor belt
knife
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.)
Expired
Application number
DER3411D
Other languages
German (de)
Inventor
Hermann Ellinghausen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rhodius Schmedding & Co
Original Assignee
Rhodius Schmedding & Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rhodius Schmedding & Co filed Critical Rhodius Schmedding & Co
Priority to DER3411D priority Critical patent/DE913698C/en
Application granted granted Critical
Publication of DE913698C publication Critical patent/DE913698C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B26D1/385Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B3/00Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)

Description

Vorrichtung zur Herstellung von Borsten aus Kunstharz Bei der Massenherstellung von Teilen aus Kunstharz werden diese mittels einer Schneidvorrichtung von einer Kunstharzfolie, -stange od. dgl. abgeschnitten, wobei die Kunstharzfolie oder -stange mit bestimmter gleichmäßiger Geschwindigkeit der Schneidvorrichtung zugeführt wird. Diese Art der Herstellung wird beispielsweise mit Vorteil zur Erzeugung von Borsten aus Kunstharz angewendet, die an Stelle der bisher aus Piassava hergestellten Borsten für Besen zur Straßenreinigung u. dgl. verwendet werden.Apparatus for making bristles from synthetic resin. In mass production of parts made of synthetic resin, these are cut from a Synthetic resin film, rod or the like. Cut off, the synthetic resin film or rod is fed to the cutting device at a certain uniform speed. This type of production is advantageous for producing bristles, for example made of synthetic resin, instead of the bristles previously made from piassava be used for brooms for street cleaning and the like.

Zur Herstellung solcher Kunstharzborsten hat man bisher eine Schneidvorrichtung mit Schwingmesser benutzt, die von einer zugeführten Kunstharzfolie schmale streifenförmige Teile abschneidet. Die Leistung derartiger Schwingmesser ist jedoch verhältnismäßig gering. Nach der Erfindung wird für den vorgenannten Zweck eine Schneidvorrichtung benutzt, die aus einer umlaufenden Trommel mit einer Mehrzahl von am Umfang angeordneten Messern besteht. Diese umlaufende Messertrommel arbeitet mit einem feststehenden Messer zusammen, über das die Kunstharzfolie od. dgl. zugeführt wird. Mit einer solchen Schneidvorrichtung kann gegenüber Schwingmessern etwa die zehnfache Leistung erzielt werden.A cutting device has hitherto been used to produce such synthetic resin bristles used with an oscillating knife, the narrow strip-shaped from a supplied synthetic resin film Cuts off parts. However, the performance of such vibrating knives is proportionate small amount. According to the invention, a cutting device is provided for the aforementioned purpose used, which consists of a rotating drum with a plurality of circumferentially arranged Knives. This rotating cutterhead works with a stationary one Knife together, via which the synthetic resin film or the like. Is fed. With a Such a cutting device can perform about ten times as much as swinging knives be achieved.

Beim Abschneiden von Kunstharzstücken mittels der vorgenannten Messertrommel hat sich eine Schwierigkeit insofern ergeben, als bei dem raschen Schneidvorgang Reibungselektrizität entsteht, die ein Ankleben der abgeschnittenen Kunstharzstreifen an der :Messertrommel zur Folge hat. Um nun die von der Messertrommel gerade abgeschnittenen Kunstharzstücke sofort auf ein Transportband zu befördern, wird erfindungsgemäß die Messertrommel mit einer so großen Umlaufzahl angetrieben, daß die Zentrifugalkraft der Kunstharzstücke die durch Reibungselektrizität entstehende Anziehungskraft der Messertrommel übersteigt. Auf diese Weise werden die Kunstharzstücke von der Messertrommel ab- und auf ein unter der Messertrommel befindliches Transportband geschleudert.When cutting off pieces of synthetic resin by means of the aforementioned knife drum There has been a problem in that the rapid cutting operation Static electricity is created, which causes the cut off synthetic resin strips to stick on the: knife drum. To now the ones just cut off by the cutterhead Resin pieces to be conveyed immediately onto a conveyor belt, according to the invention, is the knife drum driven with such a large number of revolutions that the centrifugal force of the synthetic resin pieces exceeds the force of attraction of the cutterhead caused by static electricity. In this way, the resin pieces are removed from the cutterhead and on The conveyor belt located under the cutterhead is thrown.

Die weiteren Einzelheiten der Erfindung sind im folgenden an Hand der Zeichnung näher erläutert, die ein Ausführungsbeispiel darstellt. Es zeigt Fig. i eine schematische Darstellung der neuen Schneidvorrichtung in Seitenansicht, Fig.2 eine teilweise Aufsicht auf die Vorrichtung der Fig. i.The further details of the invention are given below the drawing explained in more detail, which represents an embodiment. It shows Fig. i is a schematic representation of the new cutting device in side view, FIG a partial plan view of the device of FIG.

In der Zeichnung ist mit i eine Kunstharzfolie bezeichnet, die von einer Rolle 2 abgewickelt und mittels des Transportwalzenpaares 3 mit einer bestimmten gleichmäßigen Geschwindigkeit einer Schneidvorrichtung zugeführt wird. Die beispielsweise gezeigte Vorrichtung ist zum Schneiden von Borsten bestimmt. Demgemäß entspricht die Breite der Kunstharzfolie i der Länge der Borsten.In the drawing, i denotes a synthetic resin film, which is from a roll 2 unwound and by means of the transport roller pair 3 with a certain uniform speed is fed to a cutting device. The example The device shown is intended for cutting bristles. Accordingly, corresponds the width of the synthetic resin film i the length of the bristles.

Erfindungsgemäß besteht die neue Schneidvorrichtung aus einer Messertrommel 4 mit einer Mehrzahl von am Umfang angeordneten Messern 5, die mit einem feststehenden Messer 6 zusammenarbeiten. Um eine bestimmte gleichmäßige Breite der in Form von schmalen Streifen abgeschnittenen Borsten zu erhalten, muß die Vorschubgeschwindigkeit des Kunstharzbandes i und die Umlaufzahl der Messertrommel 4 aufeinander abgestimmt werden.According to the invention, the new cutting device consists of a knife drum 4 with a plurality of circumferentially arranged knives 5, which with a fixed Knife 6 work together. To a certain uniform width of the in the form of To obtain narrow strips of cut bristles, the feed speed has to be adjusted of the synthetic resin band i and the number of revolutions of the cutterhead 4 matched to one another will.

Um die durch die Reibungselektrizität hervorgerufene Anziehungskraft der Messertrommel 4 auf die Kunstharzborsten zu überwinden, läuft die Messertrommel mit großer Drehzahl, beispielsweise 1400 pro Minute, um, wobei der Durchmesser der Messertrommel etwa 8o mm beträgt.About the force of attraction created by static electricity the cutterhead 4 to overcome the synthetic resin bristles, the cutterhead runs at high speed, for example 1400 per minute, to, the diameter of the Knife drum is about 8o mm.

Die mit der Messertrommel abgeschnittenen Kunstharzborsten 7 werden auf ein Transportband 8, das über Rollen 9 umläuft, geschleudert. Auch hier haben sich wieder bei Verwendung der üblichen Transportbänder aus Hartpapier oder Gummigewebe gewisse Schwierigkeiten ergeben. Bei einem Transportband aus Hartpapier blieben die auf das Transportband fallenden Kunstharzborsten nicht liegen, sondern wurden vielmehr abgestoßen und in die Luft gewirbelt. Andererseits zeigte es sich, daß bei Verwendung eines Transportbandes aus Gummigewebe die Kunstharzborsten so fest auf dem Transportband klebten, daß sie von diesem nicht heruntergestreift werden konnten. Zur Beseitigung dieser Schwierigkeit wird erfindungsgemäß ein Transportband aus Metall, 'vorteilhaft ein Band aus Metallgaze, verwendet, das durch eine elektrische Leitung, und zwar zweckmäßig eine Leitung io, mit der Schneidmaschine bzw. :Messertrommel verbunden ist. Bei dieser Anordnung werden zwar die von der Messertrommel abgeschleuderten Borsten vom Metallband 8 angezogen und in annähernd paralleler Lage zueinander festgehalten. Die Anziehungskraft des Metallbandes auf die Borsten wird jedoch bei dem Weitertransport in Pfeilrichtung allmählich geringer, so daß schließlich die Borsten mit Abstreifern i i ohne Schwierigkeit von dem Transportband entfernt werden können und die Borsten dann in einen Sammelbehälter 12, gleiten. Wie aus der Zeichnung hervorgeht, werden zweckmäßig zwei Transportbänder 8 nebeneinander angeordnet, wobei der mittlere Abstreifer i i zwischen die Transportbänder eingreift, während die beiden äußeren Abstreifer i i an den Außenseiten der beiden Transportbänder angeordnet sind.The synthetic resin bristles 7 cut with the cutterhead are on a conveyor belt 8, which revolves over rollers 9, thrown. Have here too again when using the usual conveyor belts made of hard paper or rubber fabric give rise to certain difficulties. With a conveyor belt made of hard paper remained the synthetic resin bristles falling on the conveyor belt are not lying, but have become rather, repelled and whirled into the air. On the other hand, it turned out that when using a conveyor belt made of rubber fabric, the synthetic resin bristles are so tight stuck on the conveyor belt so that they are not pulled off by this could. According to the invention, a conveyor belt is used to eliminate this difficulty made of metal, 'advantageously a band of metal gauze, used by an electrical Line, expediently a line OK, with the cutting machine or: knife drum connected is. With this arrangement, those thrown off by the cutterhead are indeed The bristles are attracted to the metal band 8 and held in an approximately parallel position to one another. However, the force of attraction of the metal band on the bristles is reduced during the further transport gradually decreasing in the direction of the arrow, so that finally the bristles with scrapers i i can be removed from the conveyor belt without difficulty and the bristles then slide into a collecting container 12. As can be seen from the drawing expediently two conveyor belts 8 arranged side by side, the middle scraper i i engages between the conveyor belts while the two outer scrapers i i are arranged on the outside of the two conveyor belts.

Die Messertrommel 4. mit den Messern 5 besteht zweckmäßig aus einem einzigen Stück und bildet eine fräserartige Walze, bei der die Schneidkanten der einzelnen Messer schraubenförmig verlaufen, so daß in Zusammenarbeit mit dem Gegenmesser 6 ein scherenartiger Schnitt bewirkt wird.The knife drum 4. with the knives 5 expediently consists of one single piece and forms a cutter-like roller with the cutting edges of the individual knives run helically, so that in cooperation with the counter knife 6 a scissors-like cut is effected.

Claims (3)

PATENTANSPRÜCHE: i. Die Anwendung der für die Herstellung von Holzstäbchen bekannten Vorrichtung, bestehend aus Messerwalze und einem in Höhe der Welle derselben angeordneten starren Gegenmesser, für die Herstellung von längeren Borsten aus Kunstharz in Verbindung mit einem Förderwalzenpaar und einem unmittelbar unter der Messerwalze angeordneten Transportband aus Metall, das zweckmäßig mit der Messerwalze durch eine elektrische Leitung verbunden ist. PATENT CLAIMS: i. The application of the for the manufacture of wooden sticks known device, consisting of knife roller and one at the level of the shaft of the same arranged rigid counter knife, for the production of longer bristles from synthetic resin in connection with a pair of conveyor rollers and one directly below the knife roller arranged conveyor belt made of metal, which expediently with the knife roller through an electrical line is connected. 2. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß die Messertrommel mit einer so großen Umlaufzahl angetrieben wird, daß die Zentrifugalkraft der Kunstharzstücke die durch Reibungselektrizität entstehende Anziehungskraft der Messertrommel übersteigt. 2. Apparatus according to claim i, characterized characterized in that the cutterhead is driven with such a large number of revolutions becomes that the centrifugal force of the resin pieces is caused by static electricity the force of attraction of the cutterhead. 3. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß das Transportband geteilt ist und ein Abstreifer zwischen die beiden Teile desselben eingreift. Angezogene Druckschriften: USA.-Patentschriften N r. 507 499, 670 223, 874 131, 1473 545.3. Apparatus according to claim i, characterized in that the conveyor belt is divided and a scraper engages the same between the two parts. References: U.S. Patents N o. 507 499, 670 223, 874 131, 1 473 545.
DER3411D 1941-04-05 1941-04-05 Device for producing bristles from synthetic resin Expired DE913698C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER3411D DE913698C (en) 1941-04-05 1941-04-05 Device for producing bristles from synthetic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER3411D DE913698C (en) 1941-04-05 1941-04-05 Device for producing bristles from synthetic resin

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DE913698C true DE913698C (en) 1954-06-18

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DER3411D Expired DE913698C (en) 1941-04-05 1941-04-05 Device for producing bristles from synthetic resin

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1054962B (en) * 1955-09-06 1959-04-16 Dr Justus Petri Bristle trimmings for brush and brush goods made from a mixture of artificial bristles, threads or fibers
DE1604647B1 (en) * 1966-12-30 1971-02-11 Karl Mueller Ohg Device for cutting a film strip moved by a feed device for garlands or the like.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US507499A (en) * 1893-10-24 Wood-cutting machine
US670223A (en) * 1900-08-29 1901-03-19 James A Ekin Criswell Wood-cutting machine.
US874131A (en) * 1906-03-22 1907-12-17 George P Stanley Process of making toothpicks.
US1473545A (en) * 1921-10-24 1923-11-06 William H Collier Splint machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US507499A (en) * 1893-10-24 Wood-cutting machine
US670223A (en) * 1900-08-29 1901-03-19 James A Ekin Criswell Wood-cutting machine.
US874131A (en) * 1906-03-22 1907-12-17 George P Stanley Process of making toothpicks.
US1473545A (en) * 1921-10-24 1923-11-06 William H Collier Splint machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1054962B (en) * 1955-09-06 1959-04-16 Dr Justus Petri Bristle trimmings for brush and brush goods made from a mixture of artificial bristles, threads or fibers
DE1604647B1 (en) * 1966-12-30 1971-02-11 Karl Mueller Ohg Device for cutting a film strip moved by a feed device for garlands or the like.

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