DE3128465A1 - Cutting mechanism for shredders - Google Patents

Cutting mechanism for shredders

Info

Publication number
DE3128465A1
DE3128465A1 DE19813128465 DE3128465A DE3128465A1 DE 3128465 A1 DE3128465 A1 DE 3128465A1 DE 19813128465 DE19813128465 DE 19813128465 DE 3128465 A DE3128465 A DE 3128465A DE 3128465 A1 DE3128465 A1 DE 3128465A1
Authority
DE
Germany
Prior art keywords
cutting
guide rods
foot parts
parts
strippers
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.)
Granted
Application number
DE19813128465
Other languages
German (de)
Other versions
DE3128465C2 (en
Inventor
Hermann 7777 Salem Schwelling
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.)
Hsm Pressen 7777 Salem De GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19813128465 priority Critical patent/DE3128465A1/en
Priority to FR8205828A priority patent/FR2502980B1/en
Priority to GB8209462A priority patent/GB2096017B/en
Publication of DE3128465A1 publication Critical patent/DE3128465A1/en
Application granted granted Critical
Publication of DE3128465C2 publication Critical patent/DE3128465C2/de
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16Details
    • B02C18/18Knives; Mountings thereof
    • B02C18/182Disc-shaped knives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0069Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents with stripping devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The cutting mechanism of a shredder is to be improved in that the strippers which have, up until now, always been designed in one piece and are located between the individual discs of the cutting rollers are now designed from two portions (3), lying in a mirror-inverted manner with respect to each other, per cutting gap. The stripper parts (3) lying in a row (R) in each case are simultaneously mounted, via rods (5), separately in the two mounting plates (4) without connection to the neighbouring row (R). It is important, in addition, that the head pieces (3a), directed towards the cutting-roller part (1) in the form of a shaft, terminate above the shaft centre (M), the guide rods (5'), passing through the foot parts (3b') of the strippers (3'), or the imaginary connection axes (E1) of said guide rods running, at least on the outlet side (5') of the shredded paper strips, at an acute angle ( alpha ) with respect to the common roller centre axis (M') and being arranged such that they diverge from the roller centre (M). <IMAGE>

Description

Schneidwerk für Aktenvernichter Cutting unit for document shredders

Die Erfindung bezieht sich auf ein Schneidwerk für Aktenvernichter gemaß dem Hauptpatent ................ ( Patentanmeldung P 31 12 838.6.The invention relates to a cutting mechanism for document shredders according to the main patent ................ (patent application P 31 12 838.6.

Bei diesen Aktenvernichtern hat es sich in der Praxis gezeigt, daß trotz der in den tangentialen Austrittsbereich der geschnittenen Papierstreifen hochgezogenen Kopfteile der Abstreifer auf diese noch derart erhebliche Kräfte einwirken konnen, daß nach einer gewissen Zeit oder bei stark stoßartiger Belastung insbesondere im Bereich der Walzenmitte, eine Ausbiegung der die Abstreiferfußteile fuhrenden Stangen eintreten kann.With these shredders it has been shown in practice that despite being in the tangential exit area of the cut paper strips Pulled up head parts of the scrapers act on this still such considerable forces can that after a certain period of time or with strong shock loads in particular in the area of the roll center, a deflection of the leading parts of the wiper foot Poles can enter.

Dies hat aber zur Folg-, daß sich auch die Kopfstücke der Abstreifer teilweise vom Walzengrund abheben und somit Papier in diesen Spalt eintreten sowie letzteren in einem solchen Maße erweitern kann, daß keine guten Arbeitsergebnisse mehr za erzielen sind.However, this has the consequence that the head pieces of the scrapers partially lift off the bottom of the roller and thus paper enter this gap as well the latter can expand to such an extent that it does not produce good results more za are to be achieved.

Da eine stärkere Dimensionierung dieser Teile aus Gewichts- und Kostengrunden ausscheidet, ist es Aufgabe der vorliegenden Erfindung eine Anordnung der Fußteile bzw. ihrer Halterungen zu schaffen, die die zuvor erwähnten Kräfte, bei annähernd gleicher Dimensionierung besser und für die Belastungsverteilung gleichmäßiger aufnehmen kann.As a larger dimensioning of these parts for weight and cost reasons ruled out, it is the object of the present invention to provide an arrangement of the foot parts or their brackets to create the aforementioned forces, at approximately the same dimensioning better and more evenly for the load distribution can.

Gelöst wird diese Aufgsbe dabei im wesentlichen dadurch, daB die die Fußteile der Abstreifer durchdringenden Führungsstangen bzw.This problem is essentially solved by the fact that the Guide rods or guide rods penetrating the wiper base

deren gedachte Uerbindungsachsen, zumindest auf der Austrittsseite der geschnittenen Papierstreifen in einem spitzen Winkel zur gemeinsamen Walzenmittelachse verlaufen.their imaginary connection axes, at least on the exit side of the cut paper strips at an acute angle to the common roll center axis get lost.

Durch diese erfindungsgemäße Anordnung der Fußteile bzw. ihrer Halte- und Fuhrungsetangen wird erreicht, daß eine recht erhebliche Teilkomponente der auf die Abstreifer wirkenden Schiebekraft aus den geschnittenen Papierstreifen in Richtung der Halterungen abgeleitet wird, also zentrisch auf diese gerichtet ist und einer Kippung der Abstreifer vom Walzengrund weg, entgegenwirkt.This inventive arrangement of the foot parts or their holding and guide rails is achieved that a quite significant sub-component of the pushing force acting on the scraper from the cut paper strips in Direction of the brackets is derived, so is directed centrally on this and a tilting of the scrapers away from the roll base counteracts.

Weitere Einzelheiten dieser erfindungsgemäßen Anordnung sind den Unteranspruchen sowie der Zeichnung und Zeichnungsbeschreibung zu entnehmen.Further details of this arrangement according to the invention are the dependent claims as well as the drawing and description of the drawing.

Die Zeichnung zeigt den Querschnitt eines erfindungsgemäßen Schneidwerks. Das dargestellte Schneidwerk besteht aus einem in der Zeichnung nur angedeuteten Gehäuse , in dessen seitlichen Lagerplatten 4 die aus Welle 1 und Schneidscheiben 2 einstückig aus Profilstahl hergestellten Schneidwalzen gelagert sind. Im Bereich des Förderspaltes F, F' haben die jeweils auf Lücke zueinander stehenden Schneidscheiben 2 der beiden zusammenwirkenden Walzen in an sich bekannter Weise eine leichte Überdeckung ü.The drawing shows the cross section of a cutting mechanism according to the invention. The cutting unit shown consists of one that is only indicated in the drawing Housing, in the side bearing plates 4 of the shaft 1 and cutting disks 2 cutting rollers made in one piece from profile steel are mounted. In the area of the conveyor gap F, F 'have the cutting disks that are spaced apart from one another 2 of the two interacting rollers in a known manner a slight overlap ü.

In die Zwischenräume zwischen den scheibenfDrmigen Schneidwalzenteilen 2 ragen in ebenfalls bekannter Weise die Abstreifereinheiten 3'für die geschnittenen Papierstreifen hinein. Erfindungsgemäß sind diese Einheiten hierbei jedoch aus zwei spiegelbildlich zueinander angeordneten Teilstücken 3 gebildet, die mit gegenseitigem Abstand, also unter Bildung eines Freiraumes FR' in zwei Reihen je Walze über Stangen 5, die die Fußteile 3b' der Abstreifer 3 durchdringen, in den seitlichen Lagerplatten 4 gehalten sind. Ein weiteres, wesentliches Erfindungsmerkmal besteht nun darin, daß die die Fußteile 3b'- der Abstreifer 3' durchdringenden Führungsstangen 5', bzw. deren gedachte Uerbindungsachaen E1, zumindest auf der Austrittsseite S' der geschnittenen Papierstreifen in einem spitzen Winkel E zur gemeinsamen Walzenmittelachse M' verlaufen. Hierdurch haben auch die Fußteile 3b' selbst einen von der Walzenmitte M her divergierenden Verlauf, wodurch sich der unter- bzw. oberhalb der Walzen 2 befindliche Freiraum FR' zwischen den einander jeweils gegenflberliegenden Abatreiferfußteilen 3b' vom Salzenkörper 1 aus trichterförmig erweitert.In the spaces between the disc-shaped cutting drum parts 2, the stripper units 3 'for the cut ones protrude in a likewise known manner Paper strips into it. According to the invention, however, these units are made up of two parts 3 arranged in mirror image to one another are formed, the with mutual spacing, that is, with the formation of a free space FR 'in two rows per roller over rods 5, which penetrate the foot parts 3b 'of the scraper 3, in the side bearing plates 4 are held. Another essential feature of the invention consists in the fact that the guide rods penetrating the foot parts 3b'- the stripper 3 ' 5 ', or their imaginary Uerbindungsachaen E1, at least on the exit side S' of the cut paper strips at an acute angle E to the common roll center axis M 'run. As a result, the foot parts 3b 'themselves also have one from the center of the roll M her diverging course, whereby the below or above the rollers 2 located free space FR 'between the respective opposing Abatreiferfußteile 3b 'expanded in a funnel shape from the salt body 1.

Auf den Vorteil dieser Anordnung ist bereits in der Beschreibungseinleitung hingewiesen worden. Pfeil P1 soll dabei in der zeichnerischen Darstellung die Komponente der Schiebekraft P andeuten, die in Richtung der Stangen 5 und somit einer Kippung der Abstreifer 3' entgegenwirkt.The advantage of this arrangement is already in the introduction to the description been pointed out. Arrow P1 should indicate the component in the graphic representation the pushing force P indicate that in the direction of the rods 5 and thus a tilt the scraper 3 'counteracts this.

Claims (3)

Patentanspruche Schneidwerk für Aktenvernichter nach dem Hauptpatent ....... Patent claims cutting mechanism for document shredders according to the main patent ....... ............( Patentanmeldung P 31 12 838.6 ), dadurch gekennzeichnet, daß die die Fußteile ( 3b' ) der Abstreifer ( 3V ) durchdringenden Fuhrungsstangen ( 5' ), bzw. deren gedachte Verbindungsachsen ( E1 ), zumindest auf der Austrittsseite ( Sl ) der geschnittenen Papierstreifen in einem spitzen Winkel ( ) zur gemeinsamen Walzenmittelachse ( M' ) verlaufen. ............ (patent application P 31 12 838.6), characterized in that that the foot parts (3b ') of the scrapers (3V) penetrating guide rods (5 '), or their imaginary connecting axes (E1), at least on the exit side (Sl) the cut paper strips at an acute angle () to the joint Roll center axis (M ') run. 2. Schneidwerk nach Anspruch 1, dadurch gekennzeichnet, daß die Fußteile ( 3b' ) der Abstreifer ( 3' ) einen von der tilalzenmitte ( M ) her divergierenden Verlauf haben.2. Cutting device according to claim 1, characterized in that the foot parts (3b ') the scraper (3') one diverging from the center of the tilalzen (M) Have course. 3. Schneidwerk nach den Ansprüchen 1 und 2, d a d u r c h g e k e n n z e i c h n-e t , daß sich der unter- hzz. oberhalb der Walzen ( 1, 2 ) befindliche Freiraum ( FR' ) zuischen den einander jeweils gegenüberliegenden Abstreiferfußteilen ( 3b' ) vom Walzenkörper ( 1 ) aus trichterförmig erweitert.3. Cutting device according to claims 1 and 2, d a d u r c h g e k e n n z e i c h n-e t that the under- hzz. located above the rollers (1, 2) Free space (FR ') is added to the respectively opposite scraper foot parts (3b ') expanded in a funnel shape from the roller body (1).
DE19813128465 1981-03-31 1981-07-18 Cutting mechanism for shredders Granted DE3128465A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19813128465 DE3128465A1 (en) 1981-07-18 1981-07-18 Cutting mechanism for shredders
FR8205828A FR2502980B1 (en) 1981-03-31 1982-03-30 CUTTING MECHANISM FOR DOCUMENT DESTROYER
GB8209462A GB2096017B (en) 1981-03-31 1982-03-31 Cutting mechanism for paper shredders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813128465 DE3128465A1 (en) 1981-07-18 1981-07-18 Cutting mechanism for shredders

Publications (2)

Publication Number Publication Date
DE3128465A1 true DE3128465A1 (en) 1983-01-27
DE3128465C2 DE3128465C2 (en) 1987-12-23

Family

ID=6137229

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813128465 Granted DE3128465A1 (en) 1981-03-31 1981-07-18 Cutting mechanism for shredders

Country Status (1)

Country Link
DE (1) DE3128465A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311331A1 (en) * 1983-03-29 1984-10-11 Hermann 7777 Salem Schwelling SCRAPER SYSTEM FOR THE CUTTERS OR TORCH ROLLERS OF PAPER CRUSHERS
DE3539503A1 (en) * 1984-11-23 1986-06-05 Wilhelm Dahle Büro- und Zeichengerätefabrik, 8630 Coburg Cutting mechanism for a document shredder
US4688730A (en) * 1984-11-23 1987-08-25 Wilhelm Dahle Buro- Und Zeichengeratefabrik Paper shredder and method of making the same
DE3610539A1 (en) * 1986-03-27 1987-10-01 Hermann Schwelling Stripping unit for the pair of cutting rollers of a document shredder
DE3610537A1 (en) * 1986-03-27 1987-10-01 Hermann Schwelling SCRAPER FOR THE CUTTER ROLLERS OF PAPER CRUSHERS
DE3631363A1 (en) * 1986-09-15 1988-03-24 Hermann Schwelling Stripping system for document shredders having cutting rollers which are primarily integrally worked from solid material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS ERMITTELT *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311331A1 (en) * 1983-03-29 1984-10-11 Hermann 7777 Salem Schwelling SCRAPER SYSTEM FOR THE CUTTERS OR TORCH ROLLERS OF PAPER CRUSHERS
DE3539503A1 (en) * 1984-11-23 1986-06-05 Wilhelm Dahle Büro- und Zeichengerätefabrik, 8630 Coburg Cutting mechanism for a document shredder
US4688730A (en) * 1984-11-23 1987-08-25 Wilhelm Dahle Buro- Und Zeichengeratefabrik Paper shredder and method of making the same
DE3610539A1 (en) * 1986-03-27 1987-10-01 Hermann Schwelling Stripping unit for the pair of cutting rollers of a document shredder
DE3610537A1 (en) * 1986-03-27 1987-10-01 Hermann Schwelling SCRAPER FOR THE CUTTER ROLLERS OF PAPER CRUSHERS
DE3631363A1 (en) * 1986-09-15 1988-03-24 Hermann Schwelling Stripping system for document shredders having cutting rollers which are primarily integrally worked from solid material

Also Published As

Publication number Publication date
DE3128465C2 (en) 1987-12-23

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Owner name: H.S.M. PRESSEN GMBH, 7777 SALEM, DE

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