WO1996004113A1 - Dispositif de production d'un materiau en petits morceaux - Google Patents

Dispositif de production d'un materiau en petits morceaux Download PDF

Info

Publication number
WO1996004113A1
WO1996004113A1 PCT/EP1995/003019 EP9503019W WO9604113A1 WO 1996004113 A1 WO1996004113 A1 WO 1996004113A1 EP 9503019 W EP9503019 W EP 9503019W WO 9604113 A1 WO9604113 A1 WO 9604113A1
Authority
WO
WIPO (PCT)
Prior art keywords
knife
pieces
bar
circumferential direction
designed
Prior art date
Application number
PCT/EP1995/003019
Other languages
German (de)
English (en)
Inventor
Wolfgang Frick
Original Assignee
Rewipac Holding 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 Rewipac Holding Inc. filed Critical Rewipac Holding Inc.
Priority to AU33819/95A priority Critical patent/AU3381995A/en
Publication of WO1996004113A1 publication Critical patent/WO1996004113A1/fr

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
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/144—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with axially elongated 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
    • B02C18/06—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
    • B02C18/186—Axially elongated knives
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D21B1/08—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags
    • D21B1/10—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags by cutting actions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Definitions

  • the invention relates to a device for the production of snippet material, in particular for the production of packaging material in the form of approximately rectangular strip sections consisting of cardboard or the like, with a cross cutter preferably arranged downstream of a longitudinal cutter, which has a knife roller which can be rotated by means of a drive device and which is on the start side is equipped with knives which interact with a fixed counter knife.
  • a device of this type is known from DE 39 03 382 C2.
  • the knife roller of the cross cutter is provided on the circumferential side with radially protruding knife strips which extend obliquely with respect to the axial direction and extend over the working width.
  • they cause the strip-shaped material fed to the cross cutter to be transported laterally.
  • the _ strip-shaped material is inclined to the direction of transport, so that diamond-shaped strip sections are formed, their length increases towards the end of the strip. Such deviations from the desired rectangular configuration of the strip sections are undesirable with regard to further processing.
  • the knife roller is designed as a multi-bladed rotor with a plurality of knife receiving beams projecting radially from a shaft, each of which carries a plurality of axially parallel knife pieces offset in relation to one another in the circumferential direction.
  • the knife receiving beams can expediently have a plurality of beam sections offset in the circumferential direction from one another over the working width, each of which is assigned a knife piece. This measure ensures the same clamping and cutting conditions in the area of each knife piece.
  • the knife pieces are each projecting in the circumferential direction.
  • the knife pieces are expediently designed as a blade provided with a knife edge, which projects beyond the front edge of the knife holder bar.
  • Another expedient measure can consist in that the knife pieces are arranged tilted relative to a tangential plane. This advantageously results in a comparatively small width of the phase to be provided for the formation of the cutting edge and thus ensures high knife stability.
  • the knife pieces can advantageously be arranged to be adjustable in the circumferential direction. This enables simple wear compensation.
  • a conveyor shaft can be provided between the slitter and cross cutter, which is delimited by two conveyor belt arrangements, which form a wedge-shaped constricting inlet and are resiliently adjusted against one another on the outlet side.
  • a further expedient measure can consist in that the knife holder receiving the fixed counter knife has a guide surface adjoining the conveying shaft which drops towards the knife bar forming the counter knife. This results in a reliable loading of the cross cutter even with a comparatively short, strip-shaped material.
  • FIG. 1 shows a schematic side view of a device according to the invention
  • FIG. 2 shows a vertical section through the cross cutter of the arrangement according to FIG. 1
  • FIG. 3 shows an enlarged illustration of the rotor of FIG
  • Cross cutter and Figure 4 is a schematic plan view of a
  • Knife holding beam of the rotor Knife holding beam of the rotor.
  • FIG. 1 is based for the production of chips of the type mentioned above contains a longitudinal cutter 1, which is followed by a cross cutter 2. Between the longitudinal cutter 1 and the cross cutter 2, a downward sloping conveyor shaft 3 is provided.
  • the longitudinal cutter 1 is acted upon in a lying formation along a feed plane running parallel to the axes of the knife disks.
  • the strips leaving the slitter 1 are tilted by approximately 45 ° with respect to the plane of the material fed to the slitter 1.
  • the longitudinal strips so tilted are laid flat in the conveyor shaft 3.
  • the conveyor shaft which is laterally delimited by guide plates etc., is delimited at the top and bottom by drivable conveyor belt arrangements 4, 5.
  • These are designed and arranged in such a way that there is an inlet gap 6 which tapers in a wedge shape in the conveying direction and that the mutually facing conveyor belt runs run approximately parallel on the outlet side.
  • the mutually opposite conveyor belt arrangements 4, 5 are pivotally mounted in the area of their rear deflection rollers 7 and are clamped together in the region of their front deflection rollers 8 by means of a spring arrangement 9.
  • support runners 10 can be assigned to the said runs, in particular in the area adjoining the inlet gap 6.
  • the conveyor belt arrangements 4, 5 can consist of a plurality of belt belts, evenly distributed over the conveyor shaft width, to which common deflection rollers 7, 8 can be assigned.
  • the belt straps mentioned can be provided with wedge-shaped strips for guidance.
  • the deflecting rollers are to be provided with suitable grooves in which the wedge strips can engage.
  • the flat strips 11 running out of the conveying shaft 3 are introduced into cross cutter 2, which shreds the strips into chips 12 of the desired length, that is to say executes successive chopping cuts.
  • cross cutter 2 shreds the strips into chips 12 of the desired length, that is to say executes successive chopping cuts.
  • a fixed knife and a moving knife guided past each work together.
  • the mentioned knives run parallel, so that there is a cut that is simultaneous over the entire length of the knife, that is, a chop cut.
  • the desired snippet length can be set simply by regulating the feed speed and / or the chopping sequence.
  • the cross-cutter 2 which operates in the manner outlined above, contains a cross-section with a cross-section which is arranged with an axis parallel to the axis of the cutter discs of the longitudinal cutter 1 and which can be driven in the circumferential direction approximately star-shaped rotor 13 which is provided with a circumferential knife arrangement which runs past a counter knife 15 received on a stationary knife holder 14.
  • This counter knife 15 is designed as a knife bar which is continuous over the working width or is subdivided for manufacturing and assembly reasons. It expediently has a cross section that is symmetrical with respect to its central planes, so that there is a reusable spiral bar, which ensures high overall tool life.
  • the counter knife 15 is arranged in an edge groove of the knife holder 14 designed as a cross-piece between two side walls. This has a guiding surface 16 which rises from the counter knife 15 to the outlet of the conveyor shaft 3 and whose transport plane continues approximately, which ensures reliable material guidance. In some cases it can be appropriate for the knife holder 14 to engage in a rake-like manner between the belt belts of the adjacent conveyor belt arrangement.
  • the rotor 13 as can best be seen in FIG. 2, is mounted in lateral machine walls 17, which are bridged by the crossbar forming the knife holder 14.
  • the rotor 13 is provided with lateral bearings 18, the outer ends of which carry flywheels 19 which are wedged on.
  • a drive wheel 20 is also provided, which can be connected to an associated drive element 21 of a drive motor 22 via a revolving element, for example in the form of a chain or a toothed belt, etc. This is adjustably arranged on the side wall 17 assigned to the drive side.
  • the rotor 13 is provided with four knife receiving beams 24 projecting radially from a central shaft 23 and distributed uniformly over the shaft circumference, on each of which a knife arrangement extending over the entire working width is received.
  • this consists of several, here three, knife pieces 25 arranged next to one another. These are arranged axially parallel and offset from one another in the circumferential direction.
  • the circumferential offset is between 2.5 ° to 7.5 °, preferably 5 °.
  • the knife holding beams 24 can also expediently have sections which are offset circumferentially from one another and each associated with a knife piece 25. These can be attached to or molded onto one another. In the example shown, the knife receiving beams 24 which extend over the entire working width are attached to the central shaft 23.
  • the rotor 13 is accordingly a welding construction trained. But it would also be conceivable that
  • the knife pieces 25 are each designed as a blade provided with a cutting edge 26, which is inserted into an associated edge groove of the respectively associated knife receiving beam 24 so that its cutting edge 26 extends over the direction of rotation of the rotor 13 protrudes the front flank of the associated knife holder beam 24 in the direction of rotation.
  • This protrusion practically corresponds to the maximum cutting height and gives a free space 27 radially inside the blade for holding the cuttings free of gouges.
  • the maximum thickness of the product stream fed to the cross cutter 2 is limited by the clear height of the free space 27.
  • the knife pieces 25 can be fixed by means of retaining screws 28 on the associated knife receiving beam 24 and, when the holder is released, can be adjusted in the circumferential direction by means of a rear adjusting device.
  • a rear shoulder of the knife holding beam 24 is provided through adjusting screws 29. Slots are assigned to the holding screws 28 on the knife side.
  • the cutting edge 26 is formed by a ground phase, which is designed so that it runs approximately parallel to the facing flank of the counter knife 15 during the cutting process.
  • the knife pieces 25 are slightly tilted relative to a tangential plane. This ensures that a comparatively small phase width results, which ensures a comparatively large blade thickness and thus high knife stability.
  • the knife receiving beams which extend continuously over the working width can also function as throwing bars which eject the clippings received in the free space 27 in the tangential direction via an ejection chute etc. or feed them to a downstream work station.
  • This can be a device for deforming and increasing the volume of the snippets produced.
  • the cutting dust produced during the cutting is also carried in the direction of rotation by the rotor 30. It is therefore advisable to vacuum this in the area of the exit side of the cross cutter 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

L'invention concerne un dispositif qui permet de produire un matériau en petits morceaux, notamment de produire un matériau d'emballage se présentant sous forme de bandes (12) approximativement rectangulaires en carton ou similaire. Ce dispositif comprend un dispositif de coupe transversal (2) monté de préférence en aval d'un dispositif de coupe longitudinal (1) et qui comporte un rouleau porte-lames entraîné en rotation par un dispositif d'entraînement. A sa périphérie, ce rouleau porte-lames est pourvu de lames qui coopèrent avec une contre-lame (15) montée fixe. Ce dispositif offre une grande précision de travail et un fonctionnement sans défaut, étant donné que le rouleau porte-lames se présente sous forme de rotor (13) à plusieurs ailes, pourvu de plusieurs barres (24) porteuses de lames faisant saillie, dans le sens radial, à partir d'un arbre (23). Chacune de ces barres (24) porte plusieurs lames (25) parallèles à l'axe, réparties sur la largeur de travail et décalées les unes par rapport aux autres dans le sens de la circonférence.
PCT/EP1995/003019 1994-08-02 1995-07-29 Dispositif de production d'un materiau en petits morceaux WO1996004113A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU33819/95A AU3381995A (en) 1994-08-02 1995-07-29 Device for producing shredded material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4427347.9 1994-08-02
DE19944427347 DE4427347A1 (de) 1994-08-02 1994-08-02 Vorrichtung zur Herstellung von Schnipselmaterial

Publications (1)

Publication Number Publication Date
WO1996004113A1 true WO1996004113A1 (fr) 1996-02-15

Family

ID=6524745

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/003019 WO1996004113A1 (fr) 1994-08-02 1995-07-29 Dispositif de production d'un materiau en petits morceaux

Country Status (4)

Country Link
AU (1) AU3381995A (fr)
DE (1) DE4427347A1 (fr)
TW (1) TW282418B (fr)
WO (1) WO1996004113A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008025250A1 (de) 2008-05-27 2009-12-03 Automatik Plastics Machinery Gmbh Zerkleinerungsvorrichtung zum Herstellen von Partikeln aus einem bandförmigen Material
CN114525695B (zh) * 2022-04-24 2022-07-01 江苏互憓通包装有限公司 一种瓦楞纸箱回收再利用破碎处理装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB386357A (en) * 1931-09-04 1933-01-19 Louis Stanley Johnson Improvements in paper cutting machines
US2870840A (en) * 1957-05-16 1959-01-27 Paper Converting Machine Co Web cutting apparatus
US3401728A (en) * 1965-10-15 1968-09-17 Harper Inc Allen Potato slicer
DE1679801A1 (de) * 1967-11-27 1972-02-17 Johanssons Chuckfabrik Ab Granulator,insbesondere fuer heisse Kunststoffmasse
DE3903382A1 (de) * 1989-02-04 1990-08-09 Franz Sperner Schuettfaehiges packmaterial

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB386357A (en) * 1931-09-04 1933-01-19 Louis Stanley Johnson Improvements in paper cutting machines
US2870840A (en) * 1957-05-16 1959-01-27 Paper Converting Machine Co Web cutting apparatus
US3401728A (en) * 1965-10-15 1968-09-17 Harper Inc Allen Potato slicer
DE1679801A1 (de) * 1967-11-27 1972-02-17 Johanssons Chuckfabrik Ab Granulator,insbesondere fuer heisse Kunststoffmasse
DE3903382A1 (de) * 1989-02-04 1990-08-09 Franz Sperner Schuettfaehiges packmaterial

Also Published As

Publication number Publication date
AU3381995A (en) 1996-03-04
DE4427347A1 (de) 1996-02-08
TW282418B (fr) 1996-08-01

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