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DE3806119A1 - Cutting mechanism for document shredders - Google Patents

Cutting mechanism for document shredders

Info

Publication number
DE3806119A1
DE3806119A1 DE3806119A DE3806119A DE3806119A1 DE 3806119 A1 DE3806119 A1 DE 3806119A1 DE 3806119 A DE3806119 A DE 3806119A DE 3806119 A DE3806119 A DE 3806119A DE 3806119 A1 DE3806119 A1 DE 3806119A1
Authority
DE
Germany
Prior art keywords
cutting
outer circumference
iii
cutting mechanism
rollers
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
DE3806119A
Other languages
German (de)
Other versions
DE3806119C2 (en
Inventor
Hermann 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 and Co Kg 88682 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 DE3806119A priority Critical patent/DE3806119C2/en
Publication of DE3806119A1 publication Critical patent/DE3806119A1/en
Application granted granted Critical
Publication of DE3806119C2 publication Critical patent/DE3806119C2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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

Landscapes

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

Abstract

In a document shredder cutting mechanism, bevels (I or II), which extend in the direction of rotation of the cutting rollers (1, 2), or corresponding recesses (III) for improving the transverse severing by the helical grooves (3), are arranged in the outer periphery of the cutting discs (1a, 2a). <IMAGE>

Description

Die Erfindung bezieht sich auf ein Aktenvernichter- Schneidwerk nach dem Oberbegriff des Hauptanspruchs.The invention relates to a document shredder. Cutting device according to the preamble of the main claim.

Bei Verwendung der bekannten, insbesondere den mit zu­ sätzlichen wendelförmigen Nuten am Schneidwalzenum­ fang zu sogenannten Partikelschneidern ausgebildeten Schneidwerken, treten bei allen bisherigen Nut- und Schneidscheibenausbildungen Mängel in der gefordert exakten Quertrennung der Streifen zu Partikelchen auf.When using the known, in particular with additional helical grooves on the cutting drum start to become so-called particle cutters  Cutters, occur with all previous groove and Cutting disc training defects in the required exact cross-separation of the strips into particles.

Diese Nachteile durch eine besondere Formgebung des Außenumfangs der Schneidscheiben zu beseitigen, ist da­ her Aufgabe der vorliegenden Erfindung.These disadvantages due to a special shape of the Eliminate the outer circumference of the cutting discs is there forth object of the present invention.

Die überraschend einfache Lösung dieser Aufgabe ist den Patentansprüchen, der System-Zeichnung und deren Beschrei­ bung zu entnehmen.The surprisingly simple solution to this problem is Claims, the system drawing and their description exercise.

In der Zeichnung stellt Fig. 1 schematisch eine Teilan­ sicht auf ein neues Schneidwerk dar und Fig. 2 einen Querschnitt dazu in Seitenansicht.In the drawing, Fig. 1 shows schematically a partial view of a new cutting unit and Fig. 2 shows a cross-section in side view.

Das Schneidwerk besteht wie üblich aus einem Schneid­ walzenpaar 1, 2 mit jeweiligem Walzenkern 1 b, 2 b und sich im Bereich des Papiereinzugspalts "E" teilweise überdek­ kenden Schneidscheiben 1 a, 2 a.The cutting unit consists, as usual, of a pair of cutting rollers 1 , 2 with respective roller core 1 b , 2 b and in the area of the paper feed gap "E" partially overlapping cutting disks 1 a , 2 a .

Als neues Merkmal ist hierbei nun vorgesehen, daß der Außenumfang der Schneidscheiben 1 a und 2 a in Umlauf­ richtung einseitig abgeschrägt I oder V- bzw. bogenför­ mig nach innen verlaufend II bzw. III ausgebildet ist, also nicht mehr wie bisher parallel zur Schneidwalzen­ längsachse liegt. Bei den für sogenannte Partikelschnei­ der gedachten Schneidwerken ist es zudem wichtig, daß die in den Außenumfang der Schneidwalzen 1, 2 zusätzlich eingefrästen Wendelnuten 3 tiefer "T 1" ausgebildet sind, als die Tiefe "T₀" der nach innen gerichteten Schrägen I bzw. II bzw. der Auskehlung III. Durch diese Maßnahme erfolgt nun im Nutbereich eine Art ziehender Schnitt vom Außenumfang her nach innen und somit stets eine saubere und absolute Quertrennung, auch bei hoher Blattzahl. Die bei solchen Schneidwerken noch erforderlichen Abstreifer zwischen den Schneidscheiben 1 a, 2 a wurden zeichnerisch hier weggelassen, da das Wesen der vorliegenden Erfindung lediglich in der erstmals vorgeschlagenen Kombination bzw. dem erstmals offenbarten funktionellen Zusammenwirken von profilierten Schneidscheiben mit zusätzlich eingefrästen Wendelnuten liegt.As a new feature, it is now provided that the outer circumference of the cutting discs 1 a and 2 a in the circumferential direction bevelled on one side I or V or bogenför mig inwardly extending II or III is formed, so no longer parallel to the longitudinal axis parallel to the cutting rollers lies. In the case of so-called particle cutting of the imaginary cutting units, it is also important that the helical grooves 3 additionally milled into the outer circumference of the cutting rollers 1 , 2 are formed deeper “ T 1 ” than the depth “ T ₀” of the inward slopes I or II or the grooving III. As a result of this measure, a kind of pulling cut is now made in the groove area from the outer circumference inwards and thus always a clean and absolute transverse separation, even with a large number of sheets. The wipers between the cutting disks 1 a , 2 a that are still required in such cutting devices have been omitted here in the drawing, since the essence of the present invention lies only in the combination proposed for the first time or the functional interaction of profiled cutting disks with additionally milled spiral grooves that was first disclosed.

Die im übrigen hier so einfach erscheinende Aufgabenlösung konnte vom Fachmann aber erst vorgenommen werden, nachdem das auf detaillierten Überlegungen und Versuchen basierende Grundkonzept gefunden wurde. Auf dieser Tatsache beruht auch die erfinderische Tätigkeit beim Auffinden der hier beschriebenen Aufgabenlösung. The task solution that seems so simple here could only be carried out by the specialist after that is based on detailed considerations and experiments Basic concept was found. It is based on this fact also inventive step in finding the here described task solution.  

  • Bezugsziffernverzeichnis: 1Schneidwalze2Schneidwalze1 aSchneidscheibe2 aSchneidscheibe1 bWalzenkern2 bWalzenkern3WendelnutEPapiereinzugsrichtungT₀Tiefe der Schrägen T₁Tiefe der WendelnutIAbschrägung einseitig IIAbschrägung einseitig V-förmig IIIAuskehlungReference numerals index: 1 cutting roller 2 cutting roller 1 a cutting disc 2 a cutting disc 1 b 2 b roll core roll core 3 E helical paper feed direction T on one side IIAbschrägung unilaterally V-shaped ₀Tiefe the slope T ₁Tiefe the WendelnutIAbschrägung IIIAuskehlung

Claims (2)

1. Schneidwerk für Aktenvernichter mit paarweise zusam­ menwirkenden Schneidwalzen und sich teilweise im Be­ reich des Einzugsspaltes überdeckenden, d.h. auf Lücke stehend ineinandergreifenden Schneidscheiben, dadurch gekennzeichnet, daß der Außenumfang der Schneidscheiben (1 a und 2 a) in Umlaufrichtung einseitig abgeschrägt (I) oder V- bzw. bogenförmig nach innen verlaufend (II bzw. III) ausgebildet ist und in den Außenumfang der Schneid­ walzen (1, 2) zudem wendelförmige Nuten (3) einge­ fräst sind. 1. Cutting device for document shredders with cutting rollers interacting in pairs and partially overlapping in the loading gap, ie interlocking cutting disks standing at a gap, characterized in that the outer circumference of the cutting disks ( 1 a and 2 a ) bevelled on one side in the circumferential direction (I) or V or arcuate inward (II or III) is formed and in the outer circumference of the cutting rollers ( 1 , 2 ) also helical grooves ( 3 ) are milled. 2. Schneidwerk nach Anspruch 1, dadurch gekennzeichnet, daß die in den Außenumfang der Schneidwalzen (1, 2) zusätzlich eingefrästen Wendelnuten (3) tiefer (T 1) ausgebildet sind, als die Tiefe (T₀) der nach innen gerichteten Schrägen (I bzw. II) bzw. der Auskehlung (III).2. Cutting device according to claim 1, characterized in that in the outer circumference of the cutting rollers ( 1 , 2 ) additionally milled spiral grooves ( 3 ) are formed deeper ( T 1 ) than the depth ( T ₀) of the inward bevel (I or II) or the groove (III).
DE3806119A 1987-04-04 1988-02-26 Cutting device for shredders Expired - Lifetime DE3806119C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3806119A DE3806119C2 (en) 1987-04-04 1988-02-26 Cutting device for shredders

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8705031U DE8705031U1 (en) 1987-04-04 1987-04-04 Cutting unit for document shredders
DE3806119A DE3806119C2 (en) 1987-04-04 1988-02-26 Cutting device for shredders

Publications (2)

Publication Number Publication Date
DE3806119A1 true DE3806119A1 (en) 1988-10-13
DE3806119C2 DE3806119C2 (en) 1995-11-23

Family

ID=6806714

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8705031U Expired DE8705031U1 (en) 1987-04-04 1987-04-04 Cutting unit for document shredders
DE3806119A Expired - Lifetime DE3806119C2 (en) 1987-04-04 1988-02-26 Cutting device for shredders

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE8705031U Expired DE8705031U1 (en) 1987-04-04 1987-04-04 Cutting unit for document shredders

Country Status (1)

Country Link
DE (2) DE8705031U1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944462A (en) * 1989-05-02 1990-07-31 Cummins-Allison Corp. Shredder
FR2652281A1 (en) * 1989-09-25 1991-03-29 Courbet Gerard SHREDDER-SHREDDER.
EP0511535A1 (en) * 1991-05-01 1992-11-04 Cummins-Allison Corporation Shredder cutting discs
DE4236121A1 (en) * 1992-10-27 1994-04-28 Hermann Schwelling Pre-shredding and dosing device, especially for large plants for the destruction of files and. waste materials
WO2005046876A1 (en) * 2003-11-13 2005-05-26 Hermann Schwelling Device for comminuting empty containers
JP2015098038A (en) * 2013-11-18 2015-05-28 高橋金属株式会社 Vacuum container compacting device and compacting rotor thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0602580A1 (en) 1992-12-14 1994-06-22 Tokuji Watanabe Method and apparatus for manufacturing paper cushioning members

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1953681C3 (en) * 1969-10-24 1973-01-25 Schleicher Co Feinwerktech Device for cutting up documents
DE2335360A1 (en) * 1973-07-11 1975-02-06 Schleicher Co Feinwerktech Waste paper comminuter - has V-profiled strippers with fingers engaging in grooves of cutter rollers
DE2247901C3 (en) * 1972-09-29 1977-04-07 Feinwerktechnik Schleicher & Co, 7778 Markdorf Device for shredding sheets of paper
DE3112639C2 (en) * 1981-03-30 1987-12-23 Feinwerktechnik Schleicher & Co, 7778 Markdorf, De

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860180A (en) * 1972-09-29 1975-01-14 Albert Goldhammer Method and apparatus for destroying documents
DE2404075A1 (en) * 1974-01-29 1975-07-31 Geb Wohlfarth Iris Ziegler Tyre disintegrator with helically bladed rolls in oppositely rotating - giving reduced noise vibration and wear
GB1552269A (en) * 1977-04-07 1979-09-12 Brierley Z Shredder
US4194698A (en) * 1978-07-21 1980-03-25 American Delphi, Inc. Shredder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1953681C3 (en) * 1969-10-24 1973-01-25 Schleicher Co Feinwerktech Device for cutting up documents
DE2247901C3 (en) * 1972-09-29 1977-04-07 Feinwerktechnik Schleicher & Co, 7778 Markdorf Device for shredding sheets of paper
DE2335360A1 (en) * 1973-07-11 1975-02-06 Schleicher Co Feinwerktech Waste paper comminuter - has V-profiled strippers with fingers engaging in grooves of cutter rollers
DE3112639C2 (en) * 1981-03-30 1987-12-23 Feinwerktechnik Schleicher & Co, 7778 Markdorf, De

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944462A (en) * 1989-05-02 1990-07-31 Cummins-Allison Corp. Shredder
EP0395935A2 (en) * 1989-05-02 1990-11-07 Cummins-Allison Corporation Shredder
EP0395935A3 (en) * 1989-05-02 1991-01-30 Cummins-Allison Corporation Shredder
AU621445B2 (en) * 1989-05-02 1992-03-12 Cummins-Allison Corp. Shredder
FR2652281A1 (en) * 1989-09-25 1991-03-29 Courbet Gerard SHREDDER-SHREDDER.
EP0420731A1 (en) * 1989-09-25 1991-04-03 Gérard Courbet Knifecrusher-shredder for refuse
EP0511535A1 (en) * 1991-05-01 1992-11-04 Cummins-Allison Corporation Shredder cutting discs
DE4236121A1 (en) * 1992-10-27 1994-04-28 Hermann Schwelling Pre-shredding and dosing device, especially for large plants for the destruction of files and. waste materials
EP0595048A2 (en) * 1992-10-27 1994-05-04 Hermann Schwelling Pregrinding and dosing device, especially for large plants for shredding documents or other waste
EP0595048A3 (en) * 1992-10-27 1994-06-01 Hermann Schwelling Pregrinding and dosing device, especially for large plants for shredding documents or other waste
WO2005046876A1 (en) * 2003-11-13 2005-05-26 Hermann Schwelling Device for comminuting empty containers
US7556213B2 (en) 2003-11-13 2009-07-07 Hermann Schwelling Device for comminuting empty containers
JP2015098038A (en) * 2013-11-18 2015-05-28 高橋金属株式会社 Vacuum container compacting device and compacting rotor thereof

Also Published As

Publication number Publication date
DE3806119C2 (en) 1995-11-23
DE8705031U1 (en) 1988-08-04

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

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

8181 Inventor (new situation)

Free format text: SCHWELLING, HERMANN, 7777 SALEM, DE

8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HSM PRESSEN GMBH + CO. KG, 88682 SALEM, DE