DE3128465A1 - Cutting mechanism for shredders - Google Patents
Cutting mechanism for shreddersInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
- B02C18/182—Disc-shaped knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
- B02C2018/0069—Disintegrating 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
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)
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)
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 |
-
1981
- 1981-07-18 DE DE19813128465 patent/DE3128465A1/en active Granted
Non-Patent Citations (1)
Title |
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NICHTS ERMITTELT * |
Cited By (6)
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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Legal Events
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D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: H.S.M. PRESSEN GMBH, 7777 SALEM, DE |
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8381 | Inventor (new situation) |
Free format text: SCHWELLING, HERMANN, 7777 SALEM, DE |
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8340 | Patent of addition ceased/non-payment of fee of main patent |