DE820997C - Serrated knife, especially for cross-cutting webs of paper - Google Patents
Serrated knife, especially for cross-cutting webs of paperInfo
- Publication number
- DE820997C DE820997C DEJ1686A DEJ0001686A DE820997C DE 820997 C DE820997 C DE 820997C DE J1686 A DEJ1686 A DE J1686A DE J0001686 A DEJ0001686 A DE J0001686A DE 820997 C DE820997 C DE 820997C
- Authority
- DE
- Germany
- Prior art keywords
- knife
- paper
- cross
- cutting
- prongs
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting 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
- B26D1/0006—Cutting members therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting 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
- B26D1/0006—Cutting members therefor
- B26D2001/0033—Cutting members therefor assembled from multiple blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting 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
- B26D1/0006—Cutting members therefor
- B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Description
Zum Schneiden von Papierbahnen mittels eines Stanzschnittes werden vielfach Messer mit nackenförmigen Schneiden verwendet, die einen Schnitt quer zur Bahn des Arbeitsgutes, ausführen. Bei derartigen Messern ist es schwierig, eine gleichmäßige Schneidkante auf der ganzen Länge der Zacken zu erhalten,da dieHohlkehlen derZacken nicht geschliffen werden können. Es kann daher kein gleichmäßiger Stanzschnitt erreicht werden, und an den Hohlkehlen der Schneide wird die Papierbahn nicht geschnitten, sondern abgerissen.For cutting paper webs by means of a die cut often knives with neck-shaped cutting edges are used, which cut across the The path of the work item. With knives like this it is difficult to get a to get an even cutting edge along the entire length of the prongs, as the flutes the prongs cannot be ground. It can therefore not be a uniform die cut can be reached, and the paper web is not cut at the flutes of the cutting edge, but demolished.
Diese Nachteile werden gemäß der vorliegenden Erfindung dadurch vermieden, daß das Messer aus zwei mit gleichen Zacken versehenen Teilen zusammengesetzt ist, die um den halben Abstand der Zacken gegeneinander versetzt sind, so daß nur der untere Teil der Zacken eines jeden Messerteiles als Schneidkante wirksam ist. Dadurch wird bis zu der Kreuzungsstelle der Zacken der beiden Messerteile eine gleichmäßige Schneide erhalten. Jeder Messerteil kann für sich geschliffen werden, und der an der Hohlkehle jedes ?Messerteiles fehlende Schliff kommt bei dem zusammengesetzten Messer nicht zur Geltung, da der obere Teil der Zacken eines jeden Messerteiles durch den anderen Messerteil verdeckt ist. Mit dem auf diese Weise ausgebildeten, zusammengesetzten Messer wird daher ein sauberer gleichmäßiger Schnitt erzielt. Da die Zacken eines jeden Messerteiles einen doppelt so großen Abstand voneinander haben wie bei dem aus einem Stück bestehenden Messer, wird der Schleifvorgang außerdem erleichtert.According to the present invention, these disadvantages are avoided by that the knife is composed of two parts provided with the same teeth, which are offset from one another by half the distance between the prongs, so that only the lower part of the prongs of each knife part acts as a cutting edge. Through this becomes uniform up to the point of intersection of the prongs of the two knife parts Preserved cutting edge. Each part of the knife can be sharpened on its own, and the the chamfer of each part of the knife is missing a sharp point in the assembled one Knife does not come into its own because the upper part of the prongs of each knife part is covered by the other part of the knife. With the trained in this way, When the knife is assembled, a clean, even cut is achieved. Because the teeth of each knife part are twice as far apart As with the one-piece knife, the sharpening process will also be relieved.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt, und zwar zeigt Fig. i eine Ansicht und Fig.2 einen Schnitt eines Zackenmessers für Stanzschnitt.An embodiment of the invention is shown in the drawing, namely FIG. 1 shows a view and FIG. 2 shows a section of a serrated knife for Die cut.
Das Messer besteht aus den beiden Teilen i rnd 2, die mit den nackenförmigen Schneiden 3 und 4 versehen sind. Die Schneiden 3 bilden die Zacke 5 und die Schneiden 4 die Zacke 6, deren Hohlkehlen 7 bzw. 8 durch die Zacken des anderen Messerteiles abgedeckt sind, da beide Messerteile i und 2 um den halben Abstand ihrer Zacken 5 bzw. 6 gegeneinander versetzt sind. Die wirksame Schneidkante wird daher nur von der unteren Hälfte jeder Schneidkante 3 bzw. 4 der einzelnen Messerteile i und 2 gebildet. Der zwischen den wirksamen Schneidkanten 3 bzw. 4 der beiden Messerteile i und 2 liegende :Messergrund 9 wird daher von den Kreuzungsstellen der Schneidkanten 3,4 gebildet, so daß die wirksamen Schneidkanten 3, :4 von der Zaekenspitze 5, 6 bis zu ihrem Kreuzungspunkt 9 gleichmäßig scharf sind.The knife consists of the two parts i rnd 2, those with the neck-shaped Cutting 3 and 4 are provided. The cutting edges 3 form the prong 5 and the cutting edges 4 the prong 6, its flutes 7 and 8 through the prongs of the other knife part are covered, since both knife parts i and 2 by half the distance between their prongs 5 and 6 are offset from one another. The effective cutting edge is therefore only from the lower half of each cutting edge 3 or 4 of the individual knife parts i and 2 educated. The one between the effective cutting edges 3 and 4 of the two knife parts i and 2 lying: Knife base 9 is therefore from the intersection of the cutting edges 3, 4 formed so that the effective cutting edges 3,: 4 of the prong tip 5, 6 are equally sharp up to their intersection point 9.
Das gemäß der Erfindung ausgebildete Zackenmesser kommt hauptsächlich als Querschneider zum Abtrennen einzelner Stücke aus einer Bahn von Papier, Stoff o. dgl. in Betracht und wird zweckmäßig auswechselbar in einer Haltevorrichtung, z. B. in umlaufenden Messerwalzen o. dgl. angeordnet, in denen die beiden Messerteile zusammengespannt sind.The serrated knife formed according to the invention comes mainly As a cross cutter for cutting off individual pieces from a web of paper or fabric or the like and is expediently exchangeable in a holding device, z. B. in rotating knife rollers o. The like. Arranged in which the two knife parts are clamped together.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ1686A DE820997C (en) | 1950-08-02 | 1950-08-02 | Serrated knife, especially for cross-cutting webs of paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ1686A DE820997C (en) | 1950-08-02 | 1950-08-02 | Serrated knife, especially for cross-cutting webs of paper |
Publications (1)
Publication Number | Publication Date |
---|---|
DE820997C true DE820997C (en) | 1951-11-15 |
Family
ID=7197742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEJ1686A Expired DE820997C (en) | 1950-08-02 | 1950-08-02 | Serrated knife, especially for cross-cutting webs of paper |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE820997C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2814344A (en) * | 1954-03-16 | 1957-11-26 | Colt S Mfg Co | Slotting tool and associated parts for a box blank forming machine |
US3255648A (en) * | 1964-11-16 | 1966-06-14 | Kvp Sutherland Paper Co | Severance line construction for cartons and the like |
US3255649A (en) * | 1964-11-16 | 1966-06-14 | Kvp Sutherland Paper Co | Severance line construction for cartons and the like |
DE3539986A1 (en) * | 1985-11-11 | 1987-06-04 | Anger Wolfgang | Device for laminating both sides of carrier panels with associated cutting device |
-
1950
- 1950-08-02 DE DEJ1686A patent/DE820997C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2814344A (en) * | 1954-03-16 | 1957-11-26 | Colt S Mfg Co | Slotting tool and associated parts for a box blank forming machine |
US3255648A (en) * | 1964-11-16 | 1966-06-14 | Kvp Sutherland Paper Co | Severance line construction for cartons and the like |
US3255649A (en) * | 1964-11-16 | 1966-06-14 | Kvp Sutherland Paper Co | Severance line construction for cartons and the like |
DE3539986A1 (en) * | 1985-11-11 | 1987-06-04 | Anger Wolfgang | Device for laminating both sides of carrier panels with associated cutting device |
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