EP0090248B1 - Dispositif de déchiquetage de documents - Google Patents

Dispositif de déchiquetage de documents Download PDF

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Publication number
EP0090248B1
EP0090248B1 EP83102494A EP83102494A EP0090248B1 EP 0090248 B1 EP0090248 B1 EP 0090248B1 EP 83102494 A EP83102494 A EP 83102494A EP 83102494 A EP83102494 A EP 83102494A EP 0090248 B1 EP0090248 B1 EP 0090248B1
Authority
EP
European Patent Office
Prior art keywords
teeth
height
tooth
drum
smaller
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
EP83102494A
Other languages
German (de)
English (en)
Other versions
EP0090248A3 (en
EP0090248A2 (fr
Inventor
Zoltan Berger
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.)
Borbe Wanner AG
Original Assignee
Borbe Wanner AG
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 Borbe Wanner AG filed Critical Borbe Wanner AG
Priority to AT83102494T priority Critical patent/ATE17661T1/de
Publication of EP0090248A2 publication Critical patent/EP0090248A2/fr
Publication of EP0090248A3 publication Critical patent/EP0090248A3/de
Application granted granted Critical
Publication of EP0090248B1 publication Critical patent/EP0090248B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a device for shredding document material, which has a rotating cutting roller with at least one row of teeth formed from teeth of different tooth heights and a firmly supported toothed bar which interacts with the cutting roller and is profiled in accordance with the teeth of the cutting roller.
  • Document material is understood to mean all types of documents made of film, sheet and ribbon material.
  • the material can also be different and e.g. Include paper, plastic or the like.
  • Plastic tapes of all kinds play an important role as document material today, e.g. Magnetic tapes, microfilm tapes and the like.
  • the document material mentioned occurs in significant quantities at different locations and must be used for various reasons, e.g. in terms of secrecy or in terms of removal due to aging and obsolescence. Here, however, it is necessary that the destruction takes place in such a way that no information can be extracted from the document material, even if it would fall into unauthorized and unauthorized hands.
  • a particularly reliable impossibility of extracting information from document material consists in rendering the document material to be destroyed unusable by breaking it down into extremely small parts.
  • Various designs are known for this purpose, which break down the document material into more or less small parts.
  • a high-speed rotor is used which is equipped with one or two rows of teeth, which interact with a fixed toothed rack.
  • the teeth of one row of teeth are alternately designed with different tooth heights.
  • the toothed rack is also crenellated according to this tooth sequence. So that a uniform shredding of the document material is achieved, a feed pad is provided, on which a feed roller is arranged.
  • the tooth height of the small teeth measured from the tooth base on the circumference of the roller body, is equal to or less than the difference between the tooth heights of a larger and smaller tooth.
  • the cutting roller 1 shown in FIG. 1 is a schematic illustration, since an accurate graphic representation is not possible in view of the small tooth height.
  • the cutting roller 1 has, see FIG. 2, a number of rows of teeth extending axially across the width of the cutting roller 1, of which two rows of teeth 2, 3 are shown in FIG.
  • the rows of teeth 2 and 3 are composed of teeth, of which a larger tooth 4 is followed by a smaller tooth 5, which is followed by a larger tooth 4.
  • the larger teeth 4 of all rows of teeth 2, 3 form protruding sections 6 on cutting roller 1, while the smaller teeth 5 of all rows of teeth 2, 3 form recessed sections 7 on cutting drum 1.
  • the tooth height, see FIG. 2, of the larger teeth 4 is denoted by a and the tooth height of the smaller teeth 5 by b.
  • This equation states that the difference in the tooth heights of the larger and smaller teeth 4, 5 must be greater than the tooth height of the smaller tooth 5. If this condition is observed on the cutting roller 1, the undesirable case of the formation of long strips cannot occur, even if the feed is not set correctly or is not working properly.
  • This condition can also be represented as the ratio between the tooth heights of the two teeth 4, 5, which must be at least 2.0 according to the above statements. Appropriate values of this ratio are between 2.1 and 3.5.
  • the cutting roller 1 is supported in two bearing blocks 11, 12 by means of roller bearings 9, 10.
  • the two bearing blocks 11, 12 are connected to one another by a toothed strip 13, which has a profile which corresponds to that of the protruding and recessed parts 6, 7 of the cutting roller 1.
  • the toothed rack 13 can be adjusted in its distance from the cutting roller 1.
  • FIGS. 1 and 2 are not dimensionally correct, it should be mentioned that the tooth height of the larger teeth 4 is chosen to be less than 1 mm. Accordingly, the difference A is on the order of a few tenths of a millimeter.
  • the speed of the cutting roller 1 can be chosen to be small, e.g. less than 250 rpm, but preferably less than 150 rpm. The low speed also means that the power for driving the cutting roller 1 is small and is less than 100-200 watts. Nevertheless, the performance of a cutting roller 1 designed in this way is very high and comparable to the performance of known designs which, however, require a performance which is at least a power of ten higher.
  • a machine for shredding document material is schematically shown, which is equipped with a cutting roller 1 according to FIGS. 1 and 2.
  • the machine essentially consists of three parts, a comminution part 1, a collecting part and a ventilation part III.
  • the shredding part shown in section has a cutting roller 1, which is arranged at the end of a practically vertical feed nip 14 through which the document material is introduced.
  • the document material is fed through its own weight.
  • the material is properly shredded because the teeth 4, 5 arranged on the roller body of the cutting roller 1 have the tooth heights according to the invention.
  • the toothed rack 13 is arranged at the end of the feed gap 14.
  • the cutting roller 1 is driven by a drive motor 15, e.g. a geared motor, via an enveloping drive 16, e.g. a toothed belt drive, driven.
  • the shredded material is collected in a bag 17 arranged in the collecting part 11.
  • a fan arranged in the ventilation part III generates a suction flow through which the shredded document material reliably reaches the sack 17.
  • the machine can be provided with castors so that it can be used in different places.
  • parts 1-111 of the machine can be arranged in another way, e.g. lying.
  • a feed device can also be provided in the gap 14, in particular when the gap 14 is not arranged vertically, but rather at an angle or horizontally. It is essential, however, that in any case the cutting roller 1 is designed in the manner described in order to take advantage of such a machine, i.e. low drive power, low speeds of the cutting roller 1 with a correspondingly low noise level and reliable shredding of the document material into the smallest fragments.
  • the cutting roller 1 can expediently be produced from a single hardened piece of material.
  • the walls of the machine according to FIG. 3 can expediently be made of light metal or plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Lubricants (AREA)

Claims (8)

1. Dispositif de déchiquetage de documents qui comprend un cylindre fendeur rotatif (1 ) comportant au moins une rangée de dents (2, 3) composée de dents (4, 5) de différentes hauteurs et une barre dentée (13) solidement appuyée, coopérant avec le cylindre fendeur (1) et présentant un profil correspondant à celui des dents (4, 5) du cylindre fendeur (1), caractérisé en ce que, pour les dents (4, 5) montées sur le corps de cylindre (8) du cylindre fendeur ( 1 ) et constituant la rangée de dents (2, 3), la hauteur de dents (b) des petites dents, mesurée depuis la base de la dent au niveau de la périphérie du corps de cylindre (8) est égale ou inférieure à la différence A des hauters de dents (a, b) d'une grande et d'une petite dent (4, 5).
2. Dispositif selon la revendication 1, caractérisé en ce que la différence A des hauteurs de dents (a, b) est la même pour toutes les rangées de dents (2, 3) réparties sur le pourtour du corps de cylindre (8).
3. Dispositif selon lune des revendications 1 ou 2, caractérisé en ce que sur le pourtour du corps de cylindre (8) au moins quarante et, de préférence, au moins soixante rangées de dents (2, 3) sont uniformément réparties.
4. Dispositif selon la revendication 1, caractérisé en ce que la surface frontale des dents (4, 5) est inclinée vers l'avant dans le sens de la rotation.
5. Dispositif selon la revendication 1, caractérisé en ce que la hauteur de dents de la grande dent (4) est inférieure à 1 mm.
6. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que le rapport entre la hauteur de dents (a) de la grande dent (4) et la hauteur de dents (b) de la petite dent (5) est au moins égal à 2,0 et, de préférence, compris entre 2,1 et 3,3.
7. Dispositif selon la revendication 1, caractérisé en ce que la vitesse angulaire du cylindre fendeur 1 est inférieure à 250 tours/min et de préférence inférieure à 150 tours/min.
8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce qu'il est monté dans une enveloppe (I), cette enveloppe (I) comportant une fente d'amenée (14) orientée à peu près verticalement dont l'un des côtés est limité par une surface d'appui à l'extrémité intérieure de laquelle se raccorde la barre dentée (13).
EP83102494A 1982-03-30 1983-03-14 Dispositif de déchiquetage de documents Expired EP0090248B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83102494T ATE17661T1 (de) 1982-03-30 1983-03-14 Vorrichtung zum zerkleinern von dokumentmaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1950/82A CH656076A5 (de) 1982-03-30 1982-03-30 Vorrichtung zum zerkleinern von dokumentmaterial.
CH1950/82 1982-03-30

Publications (3)

Publication Number Publication Date
EP0090248A2 EP0090248A2 (fr) 1983-10-05
EP0090248A3 EP0090248A3 (en) 1984-08-01
EP0090248B1 true EP0090248B1 (fr) 1986-01-29

Family

ID=4222382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102494A Expired EP0090248B1 (fr) 1982-03-30 1983-03-14 Dispositif de déchiquetage de documents

Country Status (6)

Country Link
US (1) US4558827A (fr)
EP (1) EP0090248B1 (fr)
JP (1) JPS58180243A (fr)
AT (1) ATE17661T1 (fr)
CH (1) CH656076A5 (fr)
DE (1) DE3361954D1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444709C2 (de) * 1984-12-07 1996-05-30 Gao Ges Automation Org Vorrichtung zum Vernichten von Banknoten
US5071080A (en) * 1990-02-27 1991-12-10 Fellowes Manufacturing Company Document shredding machine
DE4114793A1 (de) * 1991-05-06 1992-11-12 Klaus Meier Aktenvernichter
US5295633A (en) * 1992-01-13 1994-03-22 Fellowes Manufacturing Company Document shredding machine with stripper and cutting mechanism therefore
SE510873C2 (sv) * 1992-06-18 1999-07-05 Masma Ab Anordning för att av skivformiga produkter framställa utfyllnadsmaterial avsett att användas som dämpmedel i förpackningar
US5676321A (en) * 1995-04-03 1997-10-14 Fellowes Mfg. Co. Cutting disk
US5636801A (en) * 1995-08-02 1997-06-10 Fellowes Mfg. Co. One piece molded stripper for shredders
US5829697A (en) * 1995-08-24 1998-11-03 Fellowes Manufacturing Company Support for cylinders in a paper shredder
US5655725A (en) * 1995-08-24 1997-08-12 Fellowes Manufacturing Co. Retaining plate for gearing
DE19626504C2 (de) * 1996-04-04 1998-03-05 Gemeinnuetzige Werkstaetten Gm Schneidvorrichtung für Aktenvernichter
US5799887A (en) * 1996-10-24 1998-09-01 Fellowes Mfg. Co. Cutting cylinder for a document shredding machine
DE19739341A1 (de) * 1997-09-09 1999-03-11 Albrecht Fritzsche Schneidwelle
DE19934818B4 (de) * 1999-07-24 2004-02-05 Schleicher & Co International Ag Anlage zur Dokumentenvernichtung
US6938844B2 (en) * 2001-12-26 2005-09-06 Charles A. Castronovo Zero-clearance cutting systems
JP4958038B2 (ja) * 2006-12-27 2012-06-20 三和産業株式会社 シュレッダー装置
US9463465B2 (en) 2012-09-06 2016-10-11 Charles A. Castronovo Compact high-security destruction machine
RU2737143C1 (ru) * 2020-02-26 2020-11-25 Государственное бюджетное образовательное учреждение высшего образования Нижегородский государственный инженерно-экономический университет (НГИЭУ) Измельчитель сыпучих продуктов
CN112473905A (zh) * 2020-11-10 2021-03-12 李河龙 一种中药粉碎机

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2335515A (en) * 1940-06-11 1943-11-30 Condor Solvents Inc Cutting method and apparatus
US2297782A (en) * 1940-06-12 1942-10-06 Pennsylvania Crusher Co Crushing machine
US2655213A (en) * 1950-06-30 1953-10-13 Du Pont Cutting machine for plastic sheeting
US2669271A (en) * 1950-10-16 1954-02-16 Matepa Nv Centrifugal blower and cutter for comminuting and conveying fodder
CH343780A (de) * 1955-09-04 1959-12-31 Bueroma Bueromaschinenvertrieb Zerkleinerungsvorrichtung
GB1342354A (en) * 1970-05-19 1974-01-03 Ici Ltd Dicing sheet material
US3960335A (en) * 1971-12-24 1976-06-01 Wilhelm Haberle Comminution device for scrap plastics
US4015782A (en) * 1975-07-09 1977-04-05 Granite Bernard H Device for reducing polymers or the like to substantially uniform small size pieces
DE2641370A1 (de) * 1976-09-15 1978-03-23 Wigand G Geraet zum vernichten von mikrofilmen und dergleichen
CA1138399A (fr) * 1977-04-20 1982-12-28 Gerhard Wigand Dechiqueteur de microfilms et autres objets semblables
US4200239A (en) * 1978-07-14 1980-04-29 Wright Line Inc. Machine that quadrates documents
US4394983A (en) * 1981-03-02 1983-07-26 Kaca Corporation Tire and refuse shredder
DE3112639A1 (de) * 1981-03-30 1982-10-07 Feinwerktechnik Schleicher & Co, 7778 Markdorf Vorrichtung zum zerkleinern von abfallmaterial, z.b. papierbloecken
EP0064596B1 (fr) * 1981-05-07 1986-07-02 Colortronic Reinhard GmbH + Co.KG Broyeur granulateur pour le broyage de carottes, de pièces moulées par injection, de corps creux soufflés, etc.

Also Published As

Publication number Publication date
EP0090248A3 (en) 1984-08-01
JPS6132064B2 (fr) 1986-07-24
JPS58180243A (ja) 1983-10-21
EP0090248A2 (fr) 1983-10-05
DE3361954D1 (en) 1986-03-13
US4558827A (en) 1985-12-17
CH656076A5 (de) 1986-06-13
ATE17661T1 (de) 1986-02-15

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