DE376005C - Knives for paper cutting machines - Google Patents

Knives for paper cutting machines

Info

Publication number
DE376005C
DE376005C DEK78704D DEK0078704D DE376005C DE 376005 C DE376005 C DE 376005C DE K78704 D DEK78704 D DE K78704D DE K0078704 D DEK0078704 D DE K0078704D DE 376005 C DE376005 C DE 376005C
Authority
DE
Germany
Prior art keywords
knife
knives
cutting machines
paper cutting
cut
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
DEK78704D
Other languages
German (de)
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.)
KARL KRAUSE AKT GES
Original Assignee
KARL KRAUSE AKT GES
Publication date
Priority to DEK78704D priority Critical patent/DE376005C/en
Application granted granted Critical
Publication of DE376005C publication Critical patent/DE376005C/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
    • B26D1/0006Cutting members therefor
    • 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
    • B26D1/0006Cutting members therefor
    • B26D2001/0053Cutting members therefor having a special cutting edge section or blade section

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Description

Messer für Papierschneidemaschinen Die Schneidemaschinen für Papier, Pappe u. dgl. sind in den letzten Jahren zu einer wesentlich größeren Leistungsfähigkeit ausgebaut worden, während das zugehörige Werkzeug, das Messer, seit vielen Jahren unverändert geblieben ist, so daß es den heutigen Anforderungen einer zeitgemäßen Schnellschneidemischine nicht mehr gewachsen ist. Die Erfindung betrifft ein Messer, welches den gesteigerten Ansprüchen Rechnung trägt.Knives for paper cutting machines The cutting machines for paper, Cardboard and the like have become much more powerful in recent years has been expanded, while the associated tool, the knife, has been for many years has remained unchanged, so that it meets today's requirements of a contemporary High-speed cutting machine is no longer able to cope. The invention relates to a knife, which takes the increased demands into account.

Die Zeichnung zeigt in Abb. i einea teilweisen O_ae-schnitt dir--h die Schneidem3.schine mit dem Messe-, und in Abb. 2 einen Qaerschnitt durch das Messec in ve-größerrtem Maßstabe.The drawing shows in Fig. I a partial O_ae-cut dir - h the cutting machine with the exhibition machine, and in Fig. 2 a cross-section through the Messec on a larger scale.

Bei d°r gesteige-te z Schnittgeschwindigkeit hat das durch das Messe:- i abgetrennte Schneidgut 2 wenig Zeit zum Ausweichen, so daß der Rückdruck auf die schräge Fläche des Messers i das Messer nach dem durch Preßbalken 3 gehaltenen Materialstapel q. hinüberzudrängen sucht. Dieses hat einmal den Nachteil, daß der Schnitt nicht gerade wird, dann auch, daß das Messer i an dem beschnittenen Stapel q. stark reibt. Letzte,-es bedeutet einen großen Reibungsverlust und unter Umständen eine Beschädigung des Schneidgutes. Um besonders letzteres zu vermeiden, hat man die Messer bisher hohl geschliffen.With the increased cutting speed, the mess has: - i separated cut material 2 little time to evade, so that the back pressure on the inclined surface of the knife i the knife after the stack of material held by the press beam 3 q. seeks to push over. This has the disadvantage that the cut is not just becomes, then also that the knife i on the trimmed pile q. rubs heavily. Last, it means a great loss of friction and possibly damage of the food to be cut. In order to avoid the latter in particular, knives have so far been used hollow ground.

Da das Messer i mittels Schrauben 5 am Messerhalter 6 auf einer möglichst kurzen Strecke a-b angeschraubt ist, so wird die Gefahr des Abdrängens mit abnehmender Breite des Messers i, also beim Abschliff der Breite c-d bis auf e-d, auch abnehmen.Since the knife i by means of screws 5 on the knife holder 6 on a possible screwed on a short distance a-b, the risk of being pushed away decreases the more Also decrease the width of the knife i, i.e. when grinding the width c-d down to e-d.

Das neue Papiermesser ist nun so eingerichtet, daß eine etwa der Abschlifflänge entsprechende Fläche c- f auf der Brustseite des Messers fein poliert und parallel zur Anschraubfläche a-b ausgeführt und die Brustseite mit der Fläche f-d gegen die Fläche c-f geneigt zurückgeschliffen ist. Auf diese Weise ist eine möglichst große Gegendruckfläche c- f vorhanden, die mit abnehmender Breite des Messers ebenfalls abnimmt, so daß zugleich eine möglichst große Strecke f-d infolge des gegen die Fläche c- f geneigten Schliffes vollständig frei am Stapel vorbeigeht. Die veränderliche polierte Fläche c-f gibt kleinsten Reibungsverlust bei größter Schonung des Schneidgutes.The new paper knife is now set up in such a way that a surface c- f on the chest side of the knife that corresponds approximately to the grinding length is finely polished and parallel to the screw-on surface ab and the chest side is ground back with the surface fd inclined towards the surface cf. In this way, the largest possible counterpressure surface c- f is present, which also decreases as the width of the knife decreases, so that at the same time the greatest possible distance fd as a result of the bevel inclined towards surface c-f passes the stack completely freely. The changeable polished surface cf results in the smallest loss of friction with the greatest protection of the food.

Die Knickung in der Brustfläche hat zugleich noch den wirtschaftlichen Vorteil für die Herstellung, daß nur eine schmale Fläche c-f fein zu polieren ist, so daß die He-stellungskosten der neuen besseren Ausführung niedriger sind als die des bisher auf der ganzen Brustseite fein geschliffenen (gepließten) Messers. Außerdem bedeutet die fein polierte Fläche c-f einen besseren Ausfall der Schneide und damit einen sauberen Schnitt.The kink in the chest surface also has the economic one Advantage for the production that only a narrow surface c-f needs to be polished finely, so that the production costs of the new, better version are lower than the of the knife that has been finely ground (peened) on the entire side of the chest. aside from that the finely polished surface c-f means a better failure of the cutting edge and thus a clean cut.

Claims (1)

PATENTANSPRUCH: Messer für Papierschneidemaschinen, dadurch gekennzeichnet, daß die stahlbelegte Brustseite aus zwei unter einem stumpfen Winkel zueinander stehenden Flächen (c- f und f-d) gebildet wird, von denen die an der Schneide liegende Fläche (c- f) etwa auf Abschlifflänge parallel zur Anschraubfläche (a-b) verläuft und fein poliert ist. PATENT CLAIM: Knife for paper cutting machines, characterized in that the steel-coated chest side is formed from two surfaces (c-f and fd) standing at an obtuse angle to one another, of which the surface (c-f) lying on the cutting edge is approximately parallel to the cut-off length The screw-on surface (ab) runs and is finely polished.
DEK78704D Knives for paper cutting machines Expired DE376005C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK78704D DE376005C (en) Knives for paper cutting machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK78704D DE376005C (en) Knives for paper cutting machines

Publications (1)

Publication Number Publication Date
DE376005C true DE376005C (en) 1923-05-22

Family

ID=7233352

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK78704D Expired DE376005C (en) Knives for paper cutting machines

Country Status (1)

Country Link
DE (1) DE376005C (en)

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