EP0795353B1 - Déchiqueteur de documents - Google Patents

Déchiqueteur de documents Download PDF

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Publication number
EP0795353B1
EP0795353B1 EP97102396A EP97102396A EP0795353B1 EP 0795353 B1 EP0795353 B1 EP 0795353B1 EP 97102396 A EP97102396 A EP 97102396A EP 97102396 A EP97102396 A EP 97102396A EP 0795353 B1 EP0795353 B1 EP 0795353B1
Authority
EP
European Patent Office
Prior art keywords
cutting
strippers
document shredder
elements
shredder according
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 - Lifetime
Application number
EP97102396A
Other languages
German (de)
English (en)
Other versions
EP0795353A1 (fr
Inventor
Franz Maier
Helmuth Maier
Bruno Lang
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.)
Schleicher and Co International AG
Schleicher and Company of America Inc
Original Assignee
Schleicher and Co International AG
Schleicher and Company of America Inc
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 Schleicher and Co International AG, Schleicher and Company of America Inc filed Critical Schleicher and Co International AG
Publication of EP0795353A1 publication Critical patent/EP0795353A1/fr
Application granted granted Critical
Publication of EP0795353B1 publication Critical patent/EP0795353B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a document shredder with a Cutting unit, the cutting rollers with interlocking Has cutting discs, in the spaces between wipers engage with wipers that follow one another axially related.
  • a wiper system has become known from DE 36 31 363 A, in the single, disc-shaped and on support rods the wipers are completely lined up. They each consist of two in the circumferential direction contiguous halves. The same goes for the EP 260 636 A and the corresponding DE-U 94 13 845.
  • the object of the invention is to destroy a document create with the very effective scraper simple and can be manufactured and assembled inexpensively.
  • the wipers can therefore be separate from the housing, but itself integrally connected over a large part, preferred the entire length of the cutting rollers, go through and thus be designed in the manner of a disc comb.
  • the wipers can cut the cutting roller by more than 180 ° include and two opposed to each other in the circumferential direction directed sharp-edged, especially acute-angled, with the shaft sections between the cutting disks have interacting scraper edges.
  • there are at least two per cutting roller adjacent stripping units may be provided connect to each other and also to each other lead, the individual wipers with e.g. wedge and groove-shaped engagement elements are centered to each other.
  • the longitudinal connections can be continuous, in the circumferential direction curved webs, which are in the manner of the cutting rollers partially surrounding elongated shells are. This gives the stripping unit stability. Sequels these longitudinal connections can be made accordingly Shaped protrusions form into corresponding breakthroughs engage in the cross beams in which the cutting roller bearings also are provided.
  • the wipers are so directly to the crossmember belonging to the cutting unit chassis or end shields attached.
  • the wiper units can also be used for document shredders, which are constructed without a chassis with a self-supporting housing. When in connection with this invention of document shredders is spoken, including all crushing Devices of this type are meant for flat materials, ie also for packaging materials made of paper, cardboard or other materials, such as foils, are used can be.
  • the Scraper at least adjacent to the exit side of the shredded written material afterwards provided there Scraper a substantially over the outer circumference of the Section outgoing section and one behind Have free space in which the outer boundary of the wipers preferably set back below the circumference of the cutting disc is.
  • the resulting free space makes it possible Particles e.g. in the tooth gaps of grooved cutting discs got stuck after going between the after outside protruding "horns" on the scraper edges follow, have passed, to expand, so that they then at the end of the free space when the wipers turn Raise over the circumference of the cutting disc, be wiped off can.
  • the scraper not only ensures clearing out of the gaps between the cutting discs, but also for one Keep clear of those intended for particle cutting mostly spiral grooves in the cutting discs formed teeth and the circumference of the cutting disks mostly have a V-shaped depression.
  • the wiper unit can also hold a sensor serve to control the cutting unit.
  • a sensor serve to control the cutting unit.
  • On the relatively stable Scraper element can thus be protected and secure e.g. a Photodiode arrangement for a control of the cutting unit Photoelectric sensor can be attached.
  • the cutting unit is put together by the scraper units with the cross members to a rigid and well the substantial Blocked chassis absorbing cutting forces.
  • the crossbeams can preferably hold one Stand made of bar material in the form of a bow exhibit.
  • the forces can thus be absorbed immediately become, without them the outer, because of the outer appearance trained from optically high-quality plastic Affect housing, accordingly, specifically on its Function and trained without special wearing properties can be.
  • Parts of this housing can be on the stripping unit support, especially in the area of the insertion slot. This is narrow and relatively wide. Due to the support on the stripping units a Deformation in this area avoided.
  • the invention in particular also the wide embrace of the cutting shaft and the one there close distance from the sharp scraper edges the wiping effect is so good that it is not necessary the wipers very precisely to the cutting wheel width and thus the groove in which they run.
  • This also makes the previous arrangement "floating" in the axial direction of Wipers unnecessary.
  • the thickness of the wipers can therefore considerably, preferably by 20 to 40%, less than that the cutting discs. With that, all problems are caused by different tolerances or strains of the cutting discs and the wiper block could occur avoided.
  • a cutting unit designed as a chassis can have in the cutting rollers driven in opposite directions are stored. They are preferably double-sided cutting discs designed for particle cutting. There are as stripper elements extending over the entire length of the cutting rollers provided, the individual wiper discs via longitudinal connecting elements to form a block are summarized. Since it is more than 180 °, almost 270 °, around reach around the shaft cross-section, there are two per cutting roller Scraper elements match each other in the circumferential direction connected.
  • the wiper elements can be made in one piece Plastic injection molding and are also used Connection of the two side cheeks of the cutting unit.
  • the core of a document shredder 11 is the cutter 12, which is designed in a chassis design. It contains two side cheeks or cross members 14, 15 (Fig. 4), of which the cross member 15 simultaneously a gear box 17th contains, in the gear wheels, not shown in Fig. 4 for a reduction of the one not shown Electric motor originating drive speed to the working speed the cutting rollers 16 (Fig. 1 and 2) care.
  • the cutting rollers 16 are made in one piece from steel and have, based on a continuous wave cross-section 18, outwardly projecting cutting disks 19 with provided in this, 20 leading inclined in the direction of rotation Grooves or tooth gaps 21, the one accordingly form forward-facing cutting tooth 22. Because of the Details of the cutting wheel formation and its effect attention is drawn to DE 22 47 901 B.
  • Grooves are circumferential between the individual cutting disks 23 formed, the width of which is such that it with a to Cutting between the peripheral edges of the cutting disks 19 suitable fit with the corresponding cutting disc other cutting roller interact. It is particularly out Fig. 2 can be seen that the cutting rollers so one inside the other intervene that each cutting roller with its circumference 24 relatively short distance to the groove bottom 25 of the groove 23 of the opposite cutting roller works together.
  • the Cutting discs are made according to the desired dimensions Dimension particles, i.e. for example 4 mm wide and have on the circumference some, in the present example 4 grooves or Tooth gaps 21. These work together with the extent 24 of the opposite cutting disc for that of the circumferential edges of the strips cut strips torn apart or cut into individual particles become.
  • the cutting discs are synchronized, i.e. with the same Speed, driven in opposite directions in the direction of rotation 20, see above that the material in the area of the entry gap 26th grasp and release the particles at the material outlet 27.
  • Scraper units 30 are assigned to cutting rollers 16, those for each cutting roller 16 made of two separately Wiper elements 28, 29 exist. They are considered elongated One-piece elements made of plastic injection molding according to Art of a disc comb. Yours as flat segments or discs formed wipers 31 are by a Longitudinal connection running over the entire length of the scraper 32 connected together. This has the shape of a Cutting wheel circumference 24 in the ring shell segment surrounding it at a distance, what good stiffness with little material worries. In extension of this longitudinal connecting web 32 are connecting elements 33 on both sides, which in corresponding crescent-shaped cutouts 34 on the two Cross members 14, 15 are used (Fig. 4). By an as Paragraph trained shoulder 35 (Fig. 3) they put the Cross members 14, 15 also fixed in their distance. By appropriate Connection means, for example clamping connection means or the like., The connecting elements in the cross member also be set against train.
  • the shape of the wipers 31 is in particular from the figures 2 and 5 to recognize, because of the form expressly Reference is made. Although for every document shredder Two stripper elements 28 and 29 are necessary however, the entry-side elements 28 and the exit-side elements Elements 29 will be the same for both sides. you will be only mounted in mirror image to each other.
  • connection section 43 which in the example shown as a V-shaped rib or spring 43 is shown (Fig. 6).
  • the wipers 31 of the wiper element 29 near the outlet also have a sharp-edged scraper blade 40 and then an exit gap 27 delimiting edge 39.
  • these edges 39 are like this arranged that they are wedge-shaped or funnel-shaped limit opening exit slit 27 during the entry slit 26 is relatively narrow. Then to the edge 39 is a far beyond the circumference 24 of the cutting discs projecting horn 45 is provided on the stripped Particles are pushed along by the cutting discs until they fall down from the cutting gap area.
  • a space 46 is thereby connected to this horn created that the outer edge of the scraper to within the circumference 24 of the cutting disc 19 is excluded. That then the outer circumference goes back to the big one Distance from the center of the horn back.
  • the longitudinal connections are in both stripper elements 28, 29 32 arranged so that they connected to each other via the V-connection 43, 44, for example enclose a third circle.
  • the one from the two elements 28, 29 assembled wipers comprise the cutting roller at the bottom of the groove 25 by more than 180 °, preferably close to 270 °.
  • Both wiper elements have approximately in their wipers semi- to third-circular recesses 47 in which the Longitudinal beams 36 lie, which thus the stripper elements 28, 29 define and manage.
  • the individual wipers 31 are compared to the thickness of the cutting disc relatively thin. 3 and 4 show that each Cutting roller and thus also every stripper element has thirty side by side wipers in one Graduation of 8 mm to each other are arranged, which results in a cutting disc thickness of a little less than 4 mm results. In contrast, the wipers themselves are only approx. 2.6 mm thick, i.e. about 35% narrower than the cutting discs or the circumferential groove 23 formed between them. Despite the The resulting stripping is the stripping result good because the scraper blades 40 directly on the Nutgrund 25 can run and thus for a good wiping to care.
  • FIG. 3 and 4 show that the upper stripping elements 28 shown primarily in these drawings are in the middle of a receptacle 48 for the sensor 49 one Cutting unit motor control, for example a light barrier, Has. It can be snapped in there and is protected and directly at entry gap 26.
  • one Cutting unit motor control for example a light barrier, Has. It can be snapped in there and is protected and directly at entry gap 26.
  • Fig. 1 shows that a not shown in detail Housing with the entry gap 26 delimiting Housing sections 50, 51 (shown in phantom) can support the outer boundary of the edge 39, so for a precise alignment of the narrow and wide insertion slot 26 to worry about.
  • Figures 1 and 4 also show that removed from the cutting rollers End of the cross member mounts 52 for a pedestal 54 are formed. This is as extending downward Bracket formed from rod material, and its upper ends are in the receptacle 52 in the form of a cylindrical Recording added.
  • the document shredder 11 works as follows: Entry gap 26 becomes documents or other flat material brought into the area of the cutting gap 42. In doing so, after switching on the device, a signal from sensor 49 generates the drive, not shown (motor and Gear) in forward gear. The cutting rollers turn in the opposite direction 20 and take that Documents into the cutting gap. It will be between the cutting edges of the cutting discs in the cutting disc width appropriate strips cut and at the same time through the interaction of the cutting discs with the transverse grooves 23 separated into particles. These fall down the exit gap 27 into one under the document shredder arranged container.

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

Claims (10)

  1. Destructeur de documents avec un mécanisme de coupe (12), qui présente des arbres de coupe (16) avec des disques de coupe (19) s'engageant l'un dans l'autre, dans les espaces intermédiaires (23) desquels s'engagent des racleurs (31) étant en relation avec des racleurs qui s'ensuivent axialement, les racleurs (31) étant réalisés sur une unité de raclage (28, 29) distincte du boítier, continue sur une partie essentielle de l'étendue axiale de l'arbre de coupe (16) respectif, et en une seule pièce avec les racleurs (31) et les raccords longitudinaux (32) qui les joignent et au moins deux éléments de raclage (28, 29) étant prévus par arbre de coupe (19), caractérisé en ce que les éléments de raclage (28, 29) sont adjoints à la mesure en direction de circonférence, les racleurs (31) individuels des éléments étant centrés l'un par rapport à l'autre avec des éléments d'engagement (43, 44).
  2. Destructeur de documents d'après la revendication 1, caractérisé en ce que les racleurs (31) entourent l'arbre de coupe (16) respectif d'un angle de plus de 180° et présentent de préférence deux arêtes de raclage (40) orientées l'une contre l'autre en direction de circonférence, affilées, notamment acutangulaires et agissant ensemble avec le fond (25) de gorge entre les disques de coupe (19).
  3. Destructeur de documents d'après la revendication 1 ou 2, caractérisé en ce que les éléments d'engagement (43, 44) sont réalisés en forme de coin et d'encoche.
  4. Destructeur de documents d'après une des revendications précédentes, caractérisé en ce que les raccords longitudinaux (32) sont des traverses s'étendant de manière courbée en direction de circonférence.
  5. Destructeur de documents d'après une des revendications précédentes, caractérisé en ce que les racleurs (31) présentent, au moins de manière contiguë au côté de sortie (27), pour les documents fractionnés à la suite d'arêtes de raclage (40) une section (corne 45) saillant de manière substantielle au-delà de la circonférence extérieure (24) des disques de coupe (19) et derrière ceci un espace libre (46), dans lequel la délimitation extérieure des racleurs (31) est reculée de préférence jusqu'au-dessous de la circonférence (24) des disques de coupe.
  6. Destructeur de documents d'après une des revendications précédentes, caractérisé en ce que les éléments de raclage présentent des creux (47) s'étendant en direction longitudinale pour le logement et le support partiels à des supports longitudinaux (36) du chassis de mécanisme de coupe, supports qui sont réalisés de préférence en tant que goujons et/ou que les éléments de raclage (28, 29) présentent de préférence des saillies (33) en tant que prolongement des raccords longitudinaux (32), qui s'engagent dans des supports transversaux (14, 15) logeant des paliers d'arbres de coupe et qui y sont éventuellement fixées en tant que supports longitudinaux joignant les supports transversaux, où notamment un des supports transversaux (15) forme une boíte d'engrenages (17), et/ou que les éléments de raclage (28, 29) et éventuellement les supports transversaux (14, 15) sont des pièces en matière plastique produites par moulage par injection en une seule pièce, où de préférence les supports transversaux (14, 15) présentent des logements pour un montant de piédestal (54) réalisé de préférence en matériau de tige en forme d'archet.
  7. Destructeur de documents d'après une des revendications précédentes, caractérisé en ce qu'au moins un élément de raclage (28, 29) présente du côté de l'entrée de matériau (26) un logement (48) pour un détecteur (49) prévu pour le contrôle du mécanisme de coupe.
  8. Destructeur de documents d'après une des revendications précédentes, caractérisé en ce que les disques de coupe (19) sont réalisés pour la coupe en petits morceaux, de préférence au moyen d'encoches (21) dans la circonférence de disque de coupe (24).
  9. Destructeur de documents d'après une des revendications précédentes, caractérisé en ce que des parties (50, 51) d'un boítier enveloppant le mécanisme de coupe (12) s'appuient sur au moins un des éléments de raclage (28, 29).
  10. Destructeur de documents d'après une des revendications précédentes, caractérisé en ce que les racleurs (31) délimitent entre eux une fente d'introduction de matériau (26) mince et une fente de sortie (27) essentiellement plus large, s'ouvrant de préférence en forme de cale, ainsi qu'éventuellement l'épaisseur des racleurs (31) est considérablement plus petite, de préférence de 20 à 40%, par rapport aux disques de coupe (19).
EP97102396A 1996-03-14 1997-02-14 Déchiqueteur de documents Expired - Lifetime EP0795353B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19610048A DE19610048A1 (de) 1996-03-14 1996-03-14 Schriftgutvernichter
DE19610048 1996-03-14

Publications (2)

Publication Number Publication Date
EP0795353A1 EP0795353A1 (fr) 1997-09-17
EP0795353B1 true EP0795353B1 (fr) 2000-12-20

Family

ID=7788277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102396A Expired - Lifetime EP0795353B1 (fr) 1996-03-14 1997-02-14 Déchiqueteur de documents

Country Status (3)

Country Link
US (1) US5934580A (fr)
EP (1) EP0795353B1 (fr)
DE (2) DE19610048A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
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DE19712661C2 (de) * 1997-03-26 2003-04-10 Schleicher & Co Int Ag Abstreifer für ein Schneidwerk eines Dokumentenvernichters
DE19742754C5 (de) * 1997-09-27 2007-04-26 Martin Yale International Gmbh Schneidwerk für einen Dokumentenvernichter mit unterschiedlichen Schneidscheibenteilungen
DE10058082C2 (de) * 2000-11-23 2002-11-14 Mewa Recycling Maschinen Und A Verfahren zur Wiederherrichtung eines Scheibensatzes einer Zerkleinerungseinrichtung und Scheibensaz hierfür
US20060049291A1 (en) * 2004-09-08 2006-03-09 Rajewski David E Blade system for a shredding apparatus
ES2315796T3 (es) * 2005-06-08 2009-04-01 Saab Ab Aparato de colocacion automatica de bandas y procedimiento que utiliza este aparato.
US20100095805A1 (en) * 2008-10-20 2010-04-22 Michilin Prosperity Co., Ltd. Plate elements for preventing rotary shafts of shredder from bending
US8157014B2 (en) * 2008-12-12 2012-04-17 Hydril Usa Manufacturing Llc Subsea solids processing apparatuses and methods
US20100181405A1 (en) * 2009-01-05 2010-07-22 Royal Appliance Mfg. Co.D/B/A Tti Floor Care North America Blade assembly for shredders of sheet-like material
US20100327092A1 (en) * 2009-06-29 2010-12-30 Fellowes, Inc. Active stripper elements for shredder assembly
US9003625B2 (en) 2009-12-17 2015-04-14 Identisys, Inc. Shredder feeder
US8348185B2 (en) * 2009-12-17 2013-01-08 Identisys, Inc. Shredder feeder
US8439286B2 (en) * 2010-06-04 2013-05-14 Michilin Prosperity Co., Ltd. Paper cleaning device for a shredder
US8783359B2 (en) * 2010-10-05 2014-07-22 Chevron U.S.A. Inc. Apparatus and system for processing solids in subsea drilling or excavation
US10988293B2 (en) * 2011-03-17 2021-04-27 The Jel Sert Company Flexible tubular package for edible product
WO2014113589A1 (fr) * 2013-01-17 2014-07-24 Merit Medical Systems, Inc. Appareils et kits pour usiner ou couper de la mousse chirurgicale et procédés associés
CN105983471A (zh) * 2015-02-12 2016-10-05 上海震旦办公设备有限公司 碎纸机切割组合

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Also Published As

Publication number Publication date
EP0795353A1 (fr) 1997-09-17
DE19610048A1 (de) 1997-09-18
US5934580A (en) 1999-08-10
DE59702776D1 (de) 2001-01-25

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