WO1996004113A1 - Device for producing shredded material - Google Patents
Device for producing shredded material Download PDFInfo
- 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
- 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.)
- Ceased
Links
Classifications
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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
- B02C18/0007—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
- B02C18/14—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
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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
- B02C18/186—Axially elongated knives
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- 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
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- 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.
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- 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
Description
Vorrichtung zur Herstellung von Schnipselmaterial Device for producing snippet material
Die Erfindung betrifft eine Vorrichtung zur Herstellung von Schnipselmaterial, insbesondere zur Herstellung von Packmaterial in Form von aus Karton oder dergleichen be¬ stehenden, etwa rechteckigen Streifenabschnitten, mit einem vorzugsweise einem LängsSchneider nachgeordneten QuerSchneider, der eine mittels einer Antriebseinrichtung rotierbare Messerwalze aufweist, die u fangsseitig mit Messern besetzt ist, die mit einem fest angeordneten Ge¬ genmesser zusammenwirken.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.
Eine Vorrichtung dieser Art ist aus der DE 39 03 382 C2 bekannt. Bei dieser bekannten Anordnung ist die Messer¬ walze des QuerSchneiders umfangsseitig mit gegenüber der Achsrichtung geschränkt verlaufenden, über die Arbeits¬ breite durchgehenden, radial vorstehenden Messerleisten versehen. Diese bewirken infolge ihrer Schrägstellung einen Seitentransport des dem Querschneider zugeführten, streifenförmigen Materials. Die Folge davon ist, daß es innerhalb des Querschneiders zu einem Seitenstau kommen kann. Gleichzeitig wird dabei das _ streifenförmige Material zur Transportrichtung schräg gestellt, sodaß rautenförmige Streifenabschnitte entstehen, deren Länge zum Streifenende hin zunimmt. Derartige Abweichungen von der angestrebten Rechteckkonfiguration der Streifenab¬ schnitte sind im Hinblick auf die Weiterverarbeitung un¬ erwünscht. Außerdem wird hierbei die Schnittlänge infolge der Schrägstellung der Streifen zum Streifenende hin immer größer, sodaß sich auch das erforderliche Antriebs¬ moment vergrößert. Hinzu kommt, daß infolge des Seitentransports mehrere Streifen übereinander gelegt werden können. Es besteht daher die Gefahr, daß die Mes¬ serwalze blockiert wird. Die bekannte Anordnung gewähr¬ leistet ersichtlich kein exaktes Arbeitsergebnis und er¬ weist sich zudem als störanfällig.A device of this type is known from DE 39 03 382 C2. In this known arrangement, 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. As a result of their inclined position, they cause the strip-shaped material fed to the cross cutter to be transported laterally. The consequence of this is that a side jam can occur within the cross cutter. At the same time, 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. In addition, the cutting length becomes ever greater as a result of the slanting of the strips towards the end of the strip, so that the required drive torque also increases. In addition, several strips can be placed one above the other as a result of the side transport. There is therefore a risk that the knife roller is blocked. The known arrangement obviously does not guarantee an exact work result and also proves to be prone to failure.
Hiervon ausgehend ist es daher die Aufgabe der vorliegenden Erfindung, eine Vorrichtung eingangs erwähnter Art mit einfachen und kostengünstigen Mitteln so zu verbessern, daß eine ver-gleichsweise hohe Produktionsgenauigkeit und Störungsfreiheit erreicht werden.Proceeding from this, it is therefore the object of the present invention to improve a device of the type mentioned at the outset with simple and inexpensive means in such a way that a comparatively high production accuracy and freedom from interference are achieved.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Messerwalze als mehrflügliger Rotor mit mehreren, von einer Welle radial abstehenden Messeraufnahmebalken aus¬ gebildet ist, die über der Arbeitsbreite jeweils mehrere, in Umfangsrichtung gegeneinander versetzte, achsparalelle Messerstücke tragen.This object is achieved according to the invention in that 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.
Auf Grund des achsparalellen Verlaufs der Messerstücke entfallen ein Seitentransport und damit die Gefahr eines Seitenstaus sowie einer Schrägstellung des streifen- förmigen Materials. Hierdurch ist sichergestellt, daß das erforderliche Antriebsdrehmoment minimiert wird und gleichzeitig eine exakt rechteckförmige Konfiguration der hergestellten Streifenabschnitte erreicht wird. Infolge der umfangsmaßigen Versetzung der Messerstücke ergeben sich pro Schnitt über der Arbeitsbreite mehrere Schnitt¬ folgen, was sich ebenfalls vorteilhaft auf den Abbau von Drehmomentspitzen auswirkt. Mit Hilfe der erfindungsgemäßen Maßnahmen lassen sich somit die eingangs geschilderten Nachteile des gattungsgemäßen Standes der Technik auf einfache und kostengünstige Weise beseitigen.Due to the axially parallel course of the knife pieces, there is no side transport and thus the risk of side jams and an inclined position of the strip-shaped material. This ensures that the required drive torque is minimized and at the same time an exactly rectangular configuration of the strip sections produced is achieved. As a result of the circumferential offset of the knife pieces, there are several cutting sequences per cut across the working width, which likewise has an advantageous effect on the reduction of torque peaks. With the help of the measures according to the invention, the disadvantages of the generic prior art described at the outset can thus be eliminated in a simple and inexpensive manner.
Vorteilhafte Ausgestaltungen und zweckmäßige Fortbildun¬ gen der übergeordneten Maßnahmen sind in den Unteran¬ sprüchen angegeben. So können die Messeraufnahmebalken zweckmäßig über der Arbeitsbreite mehrere, in Umfangsrichtung gegeneinander versetzte Balkenabschnitte aufweisen, denen jeweils ein Messerstück zugeordnet ist. Diese Maßnahme gewährleistet gleiche Einspann- und Schnittverhältnisse im Bereich jedes Messerstücks.Advantageous refinements and expedient further training of the superordinate measures are specified in the subclaims. For example, 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.
Eine weitere, zu bevorzugende Maßnahme kann darin be¬ stehen, daß die Messerstücke jeweils in Umfangsrichtung vorspringend angeordnet sind. Die Messerstücke sind hier¬ zu zweckmäßig als mit einer Messerschneide versehene Klinge ausgebildet, welche über die Messeraufnahmebalken¬ vorderkante vorspringt. Diese Maßnahmen ergeben einen Freiraum zwischen Schneide- und Messeraufnahmebalkenvor¬ derseite, der das jeweils abzutrennende Streifenstück aufnehmen kann. Hierdurch ist sichergestellt, daß auch ein dickeres Streifenpaket ohne Quetschung in Form eines zuverlässigen Hackschnitts durchschlagen wird. Die so hergestellten Streifenabschnitte bleiben dabei in vor¬ teilhafter Weise unbeschädigt.Another measure to be preferred can be that the knife pieces are each projecting in the circumferential direction. For this purpose, 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. These measures result in a free space between the cutting and knife receiving bar front side, which can accommodate the strip piece to be separated in each case. This ensures that even a thicker strip package without squeezing in the form of a reliable chop cut. The strip sections produced in this way advantageously remain undamaged.
Eine weitere zweckmäßige Maßnahme kann darin bestehen, daß die Messerstücke gegenüber einer Tangentsialebene ge¬ kippt angeordnet sind. Dies ergibt in vorteilhafter Weise eine vergleichsweise kleine Breite der zur Bildung der Schneide vorzusehenden Phase und gewährleistet damit eine hohe Messerstabilität.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.
Vorteilhaft können die Messerstücke in Umfangsrichtung nachstellbar angeordnet sein. Dies ermöglicht einen ein¬ fachen Verschleißausgleich.The knife pieces can advantageously be arranged to be adjustable in the circumferential direction. This enables simple wear compensation.
In weiterer Fortbildung der übergeordneten Maßnahmen kann zwischen Längsschneider und Querschneider ein Förder¬ schacht vorgesehen sein, der durch zwei Förderbandan¬ ordnungen begrenzt ist, die einen keilförmig sich ver¬ engenden Einlauf bilden und auslaufseitig federnd aneinander angestellt sind. Diese Maßnahmen ergeben eine doppelseitige Zwangsführung und damit einen zuverlässigen Transport des dem Querschneider zuzuführenden Streifen¬ materials. Gleichzeitig ist sichergestellt, daß die Streifen, die erfahrungsgemäß beim Verlassen des Längs¬ schneiders gegenüber der Transportebene gekippt sind, in die Transportebene umgelegt werden und so dem Querschnei¬ der in Form eines flachen Materialstroms zugeführt wer¬ den, was der Qualität des auszuführenden Querschnitts förderlich ist. Eine weitere zweckmäßige Maßnahme kann darin bestehen, daß der das feste Gegenmesser aufnehmende Messerhalter eine an den Förderschacht anschließende Leitfläche auf¬ weist, die zu der das Gegenmesser bildenden Messerleiste hin abfällt. Hierdurch ergibt sich eine zuverlässige Be¬ aufschlagung des Querschneiders auch bei vergleichsweise kurzem, streifenförmigem Material.In a further development of the superordinate measures, 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. These measures result in a double-sided positive guidance and thus a reliable transport of the strip material to be fed to the cross cutter. At the same time, it is ensured that the strips, which experience shows that when they leave the slitter are tilted in relation to the transport plane, are folded over into the transport plane and are thus fed to the cross cutter in the form of a flat material flow, which promotes the quality of the cross section to be carried out is. 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.
Weitere vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen ergeben sich aus den restlichen Unteransprüchen und der nachstehenden Beispie1sbeschreibung.Further advantageous refinements and expedient further training of the superordinate measures result from the remaining subclaims and the description of the example below.
Nachstehend wird ein bevorzugtes Ausführungsbeispiel der Erfindung anhand der Zeichnung näher beschrieben: Hierbei zeigen: Figur 1 eine schematische Seitenansicht einer erfindungsgemäßen Vorrichtung, Figur 2 einen Vertikalschnitt durch den Querschneider der Anordnung gemäß Figur 1, Figur 3 eine vergrößerte Darstellung des Rotors desA preferred exemplary embodiment of the invention is described in more detail below with reference to the drawing: 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, and FIG. 3 shows an enlarged illustration of the rotor of FIG
Querschneiders und Figur 4 eine schematische Draufsicht auf einenCross cutter and Figure 4 is a schematic plan view of a
Messeraufnahmebalken des Rotors.Knife holding beam of the rotor.
Zum Polstern von empfindlichen Versandgütern können mit aus Karton oder dergleichen bestehenden Schnipseln ge¬ füllte Beutel Verwendung finden. Der aufgrund von Vor¬ schriften und Erlassen zurückzunehmende Verpackungskarton kann so einer neuen Verwendung zugeführt werden. Die der Figur 1 zugrunde liegende Vorrichtung zur Her¬ stellung von Schnipseln oben genannter Art enthält einen LängsSchneider 1, dem ein Querschneider 2 nachgeordnet ist. Zwischen Längsschneider 1 und Querschneider 2 ist ein mit Gefälle nach unten verlaufender Förderschacht 3 vorgesehen. Der Längsschneider 1, der rotierende Messer¬ scheiben enthalten kann, wird mit bogenförmigem bzw. ta¬ felförmigem Karton beaufschlagt, der durch die Messer¬ scheiben in Längsstreifen gewünschter Breite unterteilt wird. Die Beaufschlagung des Längsschneiders l erfolgt entlang einer parallel zu den Achsen der Messerscheiben verlaufenden Zuführebene in liegender Formation.Bags filled with snippets made of cardboard or the like can be used for cushioning sensitive shipping goods. The packaging cardboard to be taken back on the basis of regulations and decrees can thus be used again. The device on which 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 slitter 1, which can contain rotating knife disks, is loaded with arcuate or tabular cardboard which is divided into longitudinal strips of the desired width by the knife disks. The longitudinal cutter 1 is acted upon in a lying formation along a feed plane running parallel to the axes of the knife disks.
Die Erfahrung zeigt, daß die den Längsschneider 1 verlassenden Streifen gegenüber der Ebene des dem Längs¬ schneider 1 zugeführten Materials um etwa 45° gekippt sind. Die so gekippten Längsstreifen werden im Förderschacht 3 flach gelegt. Hierzu ist der seitlich durch Leitbleche etc.. begrenzte Förderschacht nach oben und unten durch antreibbare Förderbandanordnungen 4,5 begrenzt. Diese sind so ausgebildet und angeordnet, daß sich ein in Förderrichtung keilförmig verjüngter Einlaufspalt 6 er-gibt und daß die einander zugewandten Förderbandtrums auslaufseitig etwa parallel verlaufen. Die einander ge-genüberliegenden Förderbandanordnungen 4,5 sind im Be-reich ihrer hinteren Umlenkwalzen 7 schwenkbar gelagert und im Bereich ihrer vorderen Umlenkwalzen 8 mittels einer Federanordnung 9 zusammengespannt. Hierdurch ist sichergestellt, daß sich der Abstand der einander zuge-wandten Trums der Förderbandanordnungen 4,5 selbsttätig entsprechend der Dicke des durchgeleiteten Förderstroms einstellen kann. Zur Stabilisierung der inneren Trums der Förderbandanordnungen 4,5 können den genannten Trums ins¬ besondere im an den Einlaufspalt 6 sich anschließenden Bereich Stützkufen 10 zugeordnet sein.Experience shows that 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. For this purpose, 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. This ensures that the distance between the mutually facing strands of the conveyor belt arrangements 4,5 automatically corresponds to the Can adjust the thickness of the conveyed flow. In order to stabilize the inner runs of the conveyor belt arrangements 4, 5, support runners 10 can be assigned to the said runs, in particular in the area adjoining the inlet gap 6.
Die Förderbandanordnungen 4,5 können aus mehreren, gleichmäßig über die Förderschachtbreite verteilten Gurt¬ bändern bestehen, denen gemeinsame Umlenkwalzen 7,8 zu¬ geordnet sein können. Die genannten Gurtbänder können zur Führung mit keilförmigen Leisten versehen sein. Die Um¬ lenkwalzen sind in diesem Falle mit geeigneten Nuten zu versehen, in welche die Keilleisten eingreifen können.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. In this case, the deflecting rollers are to be provided with suitable grooves in which the wedge strips can engage.
Die aus dem Förderschacht 3 herauslaufenden, flach gelegten Streifen 11 werden in Querschneider 2 eingeführt, der die Streifen zu Schnipseln 12 der ge¬ wünschten Länge zerhäckselt, das heißt aufeinander folgende Hackschnitte ausführt. Hierzu wirken jeweils ein festes Messer und ein hieran vorbeigeführtes bewegtes Messer zusammen. Die genannten Messer verlaufen parallel, sodaß sich ein auf der ganzen Messerlänge gleichzeitig erfolgender Schnitt, das heißt ein Hackschnitt ergibt. Die gewünschte Schnipsellänge läßt sich dabei einfach durch Regulierung der Zuführgeschwindigkeit und/oder der Hackschnittfolge einstellen.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. For this purpose, 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.
Der in vorstehend umrissener Weise arbeitende Querschneider 2 enthält einen mit zur Achse der Messer¬ scheiben des Längsschneiders 1 paralleler Achse ange¬ ordneten, in Umfangsrichtung antreibbaren, im Querschnitt etwa sternförmigen Rotor 13 der mit einer umfangsseitigen Messeranordnung versehen ist, die an einem auf einem stationären Messerhalter 14 aufgenommen Gegenmesser 15 vorbeilaufen. Dieses Gegenmesser 15 ist als über die Ar¬ beitsbreite durchgehende oder aus Fertigungs- und Montagegründen unterteile Messerleiste ausgebildet. Diese besitzt zweckmäßig einen bezüglich ihrer Mittelebenen symetrisehen Querschnitt, sodaß sich eine mehrfach verwendbare Wendeleiste ergibt, was hohe Gesamtstand¬ zeiten gewährleistet. Das Gegenmesser 15 ist in einer Randnut des als Traverse zwischen zwei Seitenwänden ausgebildeten Messerhalters 14 angeordnet. Dieser besitzt eine vom Gegenmesser 15 zum Auslauf des FörderSchachts 3 ansteigende, dessen Transportebene etwa fortsetzende Leitfläche 16, die eine zuverlässige Materialführung ge¬ währleistet. In manchen Fällen kann es sich hierzu an¬ bieten, wenn der Messerhalter 14 rechenförmig zwischen die Gurtbänder der benachbarten Förderbandanordnung ein¬ greift.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.
Der Rotor 13 ist, wie am besten aus Figur 2 erkennbar ist, in seitlichen Maschinenwänden 17 gelagert, die durch die den Messerhalter 14 bildende Traverse überbrückt sind. Der Rotor 13 ist hierzu mit seitlichen Lagerstummein 18 versehen, deren äußere Enden aufgekeilte Schwungräder 19 tragen. Im Bereich einer Seite ist zudem ein Antriebsrad 20 vorgesehen, das über ein Umlaufelement, etwa in Form einer Kette oder eines Zahn¬ riemens etc.. mit einem zugeordneten Antriebselement 21 eines Antriebsmotors 22 verbindbar ist. Dieser ist ver- stellbar an der der Antriebsseite zugeordneten Seitenwand 17 angeordnet.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. For this purpose, the rotor 13 is provided with lateral bearings 18, the outer ends of which carry flywheels 19 which are wedged on. In the area of one side, 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.
Der Rotor 13 ist im dargestellten Beispiel, wie am besten aus Figur 3 erkennbar ist, mit vier von einer zentralen Welle 23 radial abstehenden, gleichmäßig über den Wellenumfang verteilten Messeraufnahmebalken 24 versehen, auf denen jeweils eine über die ganze Arbeitsbreite sich erstreckende Messeranordnung aufgenommen ist. Diese be¬ steht, wie den Figuren 2 und 4 anschaulich entnehmbar ist, aus mehreren, hier jeweils drei, nebeneinander ange¬ ordneten Messerstücken 25. Diese sind achsparallel und in Umfangsrichtung gegeneinander versetzt angeordnet. Die umfangsmäßige Versetzung beträgt zwischen 2,5 ° bis 7,5 ° vorzugsweise 5 °. Durch diese umfangsmäßige Versetzung der nebeneinander angeordneten Messerstücke 25 wird erreicht, daß durch die jeweils einem Messer¬ aufnahmebalken 24 zugeordnete, über die Arbeitsbreite reichende Messeranordnung mehrere, jeweils über eine Teilstrecke reichende, zeitlich gestaffelte Hackschnitte durchgeführt werden, wodurch Drehmomentspitzen und damit Spitzen an Leistungs-bedarf abgebaut werden, ohne daß der achsparalelle Hack-schnitt beeinträchtigt würde.In the example shown, the rotor 13, as can best be seen from FIG. 3, 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. As can be clearly seen in FIGS. 2 and 4, 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 °. As a result of this circumferential displacement of the knife pieces 25 arranged next to one another, several knife cuts, staggered over time, are carried out by the knife arrangement, which extends over the working width and is assigned to a knife support bar 24, whereby torque peaks and thus peaks in power need to be dismantled without the axially parallel chopping cut being impaired.
Die Messeraufnahmebalken 24 können zweckmäßig ebenfalls umfangsmäßig gegeneinander versetzte, jeweils einem Mes¬ serstück 25 zugeordnete Abschnitte aufweisen. Diese kön¬ nen aneinander angefügt oder angeformt sein. Die über die ganze Arbeitsbreite durchgehenden Messeraufnahmebalken 24 sind im dargestellten Beispiel an die zentrale Welle 23 angesetzt. Der Rotor 13 ist dementsprechend als Schweiß- konstruktion ausgebildet. Es wäre aber auch denkbar, denThe 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
Rotor 13 als einteiligen Gußformling auszubilden. In diesem Fall bietet es sich an, die zentrale Welle 23 als Hohlwelle auszubilden.Form rotor 13 as a one-piece casting. In this case, it makes sense to design the central shaft 23 as a hollow shaft.
Die Messerstücke 25 sind jeweils, wie die Figuren 3 und 4 weiter zeigen, als mit einer Schneide 26 versehene Klinge ausgebildet, die so in eine zugeordnete Randnut des je¬ weils zugeordneten Messeraufnahmebalkens 24 eingesetzt ist, daß ihre Schneide 26 über die in Drehrichtung des Rotors 13 vordere Flanke des zugeordneten Messeraufnahme¬ balkens 24 in Drehrichtung vorspringt. Dieser Überstand entspricht praktisch der maximalen Schnitthöhe und ergibt radial innerhalb der Klinge einen Freiraum 27 zur guetsch-freien Aufnahme des Schnittguts. Die maximale Dicke des dem Querschneider 2 zugeführten Produktstroms wird durch die lichte Höhe des Freiraums 27 begrenzt.3 and 4, 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.
Die Messerstücke 25 sind durch Halteschrauben 28 auf dem zugeordneten Messeraufnahmebalken 24 festlegbar und bei gelöster Halterung mittels einer rückwärtigen Stellein¬ richtung in Umfangsrichtung nachstellbar. Zur Bildung der genannten Stelleinrichtung sind eine rückwärtige Schulter der Messeraufnahmebalken 24 durchgreifende Stellschrauben 29 vorgesehen. Den Halteschrauben 28 sind messerseitig Schlitze zugeordnet.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. To form the above-mentioned 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.
Die Schneide 26 wird durch eine angeschliffene Phase gebildet, die so gestaltet ist, daß sie während des Schneidsvorgangs etwa paralell zur zugewandten Flanke des Gegenmessers 15 verläuft. Die Messerstücke 25 sind gegenüber einer Tangetialebene leicht gekippt. Hierdurch wird erreicht, daß sich eine vergleichsweise kleine Phasenbreite ergibt, was eine vergleichweise große Klin¬ gendicke und damit eine hohe Messerstabilität gewährleistet.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.
Die über die Arbeitsbreite durchgehenden Messeraufnahme¬ balken können auch als Wurfleisten fungieren, die das im Freiraum 27 aufgenommene Schnittgut in tangentialer Richtung über einen Auswurfschacht etc.. auswerfen bzw. einer nachgeordneten Arbeitsstation zuführen. Hierbei kann es sich um eine Vorrichtung zur Verformung und Volumenver-größerung der hergestellten Schnipsel handeln. Durch den Rotor 30 wird auch der beim Schnitt entstehende Schneidstaub in Drehrichtung mitgenommen. Es empfiehlt sich daher, diesen im Bereich der Ausgangsseite des Quer¬ schneiders 2 abzusaugen. 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.
Claims
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 (en) | 1994-08-02 | 1994-08-02 | Device for producing snippet material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996004113A1 true WO1996004113A1 (en) | 1996-02-15 |
Family
ID=6524745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1995/003019 Ceased WO1996004113A1 (en) | 1994-08-02 | 1995-07-29 | Device for producing shredded material |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU3381995A (en) |
| DE (1) | DE4427347A1 (en) |
| TW (1) | TW282418B (en) |
| WO (1) | WO1996004113A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008025250B4 (en) * | 2008-05-27 | 2025-04-17 | Automatik Plastics Machinery Gmbh | Comminution device for producing particles from a band-shaped material |
| CN114525695B (en) * | 2022-04-24 | 2022-07-01 | 江苏互憓通包装有限公司 | Corrugated case recycling and reusing crushing treatment device |
Citations (5)
| 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 (en) * | 1967-11-27 | 1972-02-17 | Johanssons Chuckfabrik Ab | Granulator, especially for hot plastic mass |
| DE3903382A1 (en) * | 1989-02-04 | 1990-08-09 | Franz Sperner | SHOULDABLE PACKING MATERIAL |
-
1994
- 1994-08-02 DE DE19944427347 patent/DE4427347A1/en not_active Withdrawn
-
1995
- 1995-07-29 AU AU33819/95A patent/AU3381995A/en not_active Abandoned
- 1995-07-29 WO PCT/EP1995/003019 patent/WO1996004113A1/en not_active Ceased
- 1995-08-02 TW TW84108062A patent/TW282418B/zh active
Patent Citations (5)
| 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 (en) * | 1967-11-27 | 1972-02-17 | Johanssons Chuckfabrik Ab | Granulator, especially for hot plastic mass |
| DE3903382A1 (en) * | 1989-02-04 | 1990-08-09 | Franz Sperner | SHOULDABLE PACKING MATERIAL |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4427347A1 (en) | 1996-02-08 |
| AU3381995A (en) | 1996-03-04 |
| TW282418B (en) | 1996-08-01 |
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