EP0615785B1 - Process and device for the disposal of discarded plastic packaging straps - Google Patents
Process and device for the disposal of discarded plastic packaging straps Download PDFInfo
- Publication number
- EP0615785B1 EP0615785B1 EP94103341A EP94103341A EP0615785B1 EP 0615785 B1 EP0615785 B1 EP 0615785B1 EP 94103341 A EP94103341 A EP 94103341A EP 94103341 A EP94103341 A EP 94103341A EP 0615785 B1 EP0615785 B1 EP 0615785B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- draw
- knife
- path
- strapping
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/003—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber
- B26D3/005—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber for cutting used tyres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
Definitions
- the invention relates to a method for shredding disused items Plastic strapping, which is essentially in radial direction of a cylindrical path, at least one rotating Cutting knife fed and cut into short pieces be arranged and between two of the path of the cutting knife feed rollers that can be pressed against each other are advanced, at least one of which is motor-driven.
- the invention relates to a device for shredding of worn strapping with at least one a cylindrical track rotating cutting knife, which the strapping essentially in the radial direction between two in front the path of the cutting knife arranged, can be pressed against each other Feed rollers can be fed, at least one of which is motorized is driven.
- Plastic strapping is used for transportation purposes and used to make packaging containers, like wooden boxes, Cardboard boxes or the like to prevent accidental opening secure during transportation, or to secure a plurality of To hold transport containers together or on a transport pallet, for example. Strapping is also used to counter heavy machine parts on transport pallets Secure slipping to bundle items transported such as pipes, steel mats, briquettes and much more or rolled up objects, for example holding carpets or other floor coverings together. The strapping is done by means of a tensioning device to be secured, held together or to be connected Packaging containers or objects strung around.
- the formerly mostly used strapping made of thin sheet steel have been increasingly characterized by strapping in recent years Polypropylene or replaced from other plastics.
- each at the recipient or purchaser of the transported goods disused strapping will either be after remelting recycled, or after cutting the waste fed. Because the strapping made of polypropylene Fold or fold poorly across their length leave and also have a high elasticity, you need however, proportionately in a collection or waste container lots of space and are also difficult to handle in large quantities.
- FR-A-2 621 835 is one Corresponding device has become known, with a feed channel is provided, through which the strapping of the cylindrical Path of the cutting knife is fed. There is a in the feed channel Scanner provided a switch, the one of the cutting knife driving drive controls. This scanner is not switched on Condition of the drive on the bottom of the feed channel on.
- this strapping lifts the scanner.
- the switch is actuated by raising the scanner switches on the drive of the cutting knife after lifting the scanner.
- the switch-on status remains unchanged whether the scanner is more or less high than the one introduced Strapping is raised.
- the cutting knife therefore rotates even when it is cylindrical Track one held together by metal clips or otherwise Junction approaching. Get the metal clip or another foreign body with the strapping into the cylindrical Path of the cutting knife, it must be feared that this will be damaged if it is on the metal clip or Foreign body or even on a thickened part of the strapping hits.
- the object of the present invention is therefore a method and to develop a device of the types mentioned in the introduction in order to improve the handling of the worn strapping, and, if necessary, to facilitate their recycling.
- this safety device With the help of this safety device is exceeded a prescribed mutual distance between the feed rollers, e.g. when passing a steel clamp or the like, between the feed rollers the mutual pressure of the feed rollers canceled until a new manual commissioning and thus the strapping is interrupted.
- This will not only prevents the cutting edges of the cutting knife damaged by foreign matter or thickened parts of the strapping but the straps can also be used for a Recycling sorted, i.e. without foreign matter, in one below the path of the cutting knife arranged container on a narrow Space is collected and stored temporarily.
- the Strapping the cylindrical path of the cutting knife so in fed their longitudinal direction from the outside that the strapping between the rotating cutting knife and a stationary one Stator knives are cut, the cutting edge of the Cutting knife at a short distance on a knife edge of the stator knife is led past.
- the invention provides that the cutting edge and the knife edge is slightly inclined towards each other so that the strapping, like cutting with scissors, continuously steadily over the broad sides of the strapping be cut away, the shearing each point takes place and progresses continuously over the broad side surfaces.
- the straps are advantageously fed at a uniform speed so that the strapping be cut diagonally to their longitudinal direction.
- the leadership for the strapping is advantageously by a arranged outside the path of the rotating cutting knife Stator knife and a guide surface opposite the stator knife formed with the stator knife one in radial Direction of the guide slot to be narrowed on the cutting knife forms, the stator knife when hitting the cutting knife on the strapping at the same time as an abutment for the same serves.
- the invention provides that the The strapping stops automatically when the Thickness of the foreign body exceeds a predetermined value.
- the straps are used to pull two against each other pressed feed rollers, of which at least one is motorized is driven.
- the feed rollers will change accordingly the strength of the strapping pressed apart, with the Exceeding a predetermined mutual distance, e.g. at the Passing a steel clamp or the like between the feed rollers the mutual pressure of the feed rollers preferably canceled until a new manual commissioning and thus the feeding of the strapping is interrupted.
- the cutting knives can rotate around a vertical axis of rotation, however, a preferred embodiment of the invention provides that the axis of rotation is aligned horizontally, which makes it in particular is facilitated, several straps at the same time the cutting knives because the strapping in this Case with broad and upside down side by side can be inserted into the guide slot, the Width here advantageously a multiple of the width of the strapping is.
- the drive is the The cutting knife is appropriate above the circular path of the cutting knife arranged so that it does not prevent the strapping from being pulled in, still contaminated by the small cut strapping pieces can be.
- Another preferred embodiment of the invention provides that the cutting edge of the cutting knife essentially in axial Direction, d. H. is aligned parallel to the axis of rotation and to Cut the strapping with the knife edge of the stator knife interacts, which is preferably opposite the cutting edge is inclined.
- the advantageously adjustable angle of inclination between the cutting edge and the knife edge is appropriate between 1 and 10 degrees, preferably about 5 degrees.
- the knife edge aligned in the axial direction and the Cutting edge inclined by a few degrees in relation to the knife edge be. If there are several cutting blades, the first alternative is mentioned however less expensive.
- the strapping before reaching the cutting knife path performed the leadership expediently at least partially one to narrow towards the path of the cutting knife Guide slot is formed.
- Shortly before reaching the Circular path of the cutting knife is advantageously the strapping in the direction of rotation by an abutment Side surface of the stator knife formed, against which the strapping when the cutting knife strikes with its broad side surface can put on.
- a regrinding of dull ones Cutting knife is according to a further advantageous embodiment simplified the invention in that the cutting knife releasably are arranged on the knife shaft.
- the knife shaft is in accordance with a further advantageous embodiment of the invention one-sided supported at its upper end in a radial / axial bearing and is directly from the output shaft of an electric motor or driven by a belt drive.
- Electric motor is expediently further behind at least one of two an insertion opening for the straps arranged and pressable feed rollers against each other, which the with its front end through straps fed through the insertion opening capture and inwards to the circular path of the cutting knife transport.
- a collecting container can be detached below the circular path of the cutting knife attachable, which is expediently designed as a sack or a bag is, and the upper edge of a lower outlet opening the entire cutter enclosing housing releasably is attachable.
- a gripping protection is arranged, which prevents with the collection container removed, hand into the bottom from below Path of the cutting knife can be intervened.
- this is conveniently fixed the housing wall connected and with at least one passage opening provided for the small-cut strapping pieces.
- the housing is advantageously designed so that it can be closed at the top by a lid on which the Drive motor or a gear connected to the drive motor is flanged, and in which the vertical axis of rotation Knife shaft and the feed rollers are stored. Between the lid and a contact switch can be arranged in the housing, so that the motor drive is automatically switched off when the lid is opened becomes.
- the safety device stops the strapping from being pulled in, to prevent the cutting knife from being caught by a foreign object be damaged, for example by a two ends of one Strapping band connecting steel clamp. she prevents the entry of this steel clamp and other foreign objects, which are larger in size than the strength of the strapping.
- the safety device interrupts for this purpose the strapping retraction when the distance between the feed rollers exceed a predetermined size.
- Another advantageous embodiment of the invention provides that an insertion funnel penetrating the housing wall for the strapping slidable together with the feed roller or is pivotable so that when a compressive force is exerted on a Area of the insertion funnel the distance between the feed rollers enlarged and thus the feed also immediately interrupted becomes.
- the device shown in the drawing for the disposal of disused strapping made of polypropylene or another Plastic material consists essentially of a cylindrical, by a stand (2) supported housing (4), one in Inside the housing (4) arranged cutting device (6), with who cut the straps into small pieces, one Feeding device (8) through which the strapping of Cutting device (6) are supplied, a drive motor (10) for driving the cutting device (6) and the feeding device (8), as well as a detachably attachable underneath the housing (4) Collection container (12).
- the cutting device (6) consists essentially of a motor driven, carrying a plurality of cutting knives (18) Knife shaft (14), the axis of rotation (22) of which in the figures 1 to 5 illustrated embodiments aligned vertically is, whereas the embodiment shown in Figures 6 to 9 has a horizontal axis of rotation (22).
- Both the first-mentioned exemplary embodiments is the knife shaft (14) protruding downward on one side in a housing (4) on it the top end of the closing lid (5) and has knife blocks (16) at regular angular intervals, which each carry a cutting knife (18).
- the knife shaft (14) can be provided with a knife plate (11) at its lower end, over which several welded at uniform angular intervals Knife blocks (16) protrude downwards, one at each Cutting knife (18) is releasably attached with retaining screws.
- two holding discs (9) concentric to the knife shaft (14) Distance from each other radially over this, with the cutting knife (18) arranged between the holding disks (9) and in slot recesses (7) rigidly inserted on the circumference of the holding disks (9) are.
- the cutting blades (18) are always attached so that their wedge-shaped ground cutting edge (20) points in the direction of rotation and describes a cylindrical path when rotating the knife shaft (14).
- the cutting knives (18) each have one pointing in the direction of rotation Broad side surface (21), from which the cut Strapping pieces tangentially outwards against the inside the cylindrical housing wall (23) or against a gripping protection (72) (Fig. 6) are thrown so that the knife blocks (16) themselves are not subject to wear.
- the cutting knives (18) are the ones shown in FIGS. 6 to 9 Embodiments with respect to the axis of rotation "slanted", i.e. H. its cutting edge (20) closes on the cylindrical path has an acute angle of inclination with the Axis of rotation (22) parallel straight lines.
- the inclination is achieved in that the Slot recesses (7) of the two holding disks (9) offset at an angle are arranged.
- the angle of inclination can also be changed be when the cutting knives (18) are each one with respect
- the axis of rotation (22) of the radial adjustment axis can be tilted on the knife stands (16) are screwed tight.
- the slanted cutting knives act with an outside of the cylindrical path of the cutting edges (20) arranged stator knife (17) together, the knife edge (15) is aligned parallel to the axis of rotation (22).
- the between the cutting edges (20) of the cutting knife (18) and the Knife edge (15) of the stator knife (17) causes angles formed, that the radially fed strapping like with scissors are cut across their broad sides, the Point at which the cutting edge (20) and the knife edge (15) cut when turning the knife shaft (14) continuously over the broad sides of the strapping migrates.
- the strapping this will depend on the ratio between the speed of rotation the cutting knife and the feed speed cut off more or less at an angle.
- the knife shaft (14) is formed by the electric motor drive motor attached to the cover (5) of the housing (4) (10) driven.
- the drive of the knife shaft (14) can be via a Belt drive (24) or rigid with the output shaft of the Be coupled to the electric motor.
- a drive motor (10) flanged bevel gear (27) on the cover (5) of the housing (4) is attached, a horizontal parallel to the axis of rotation (22)
- Output shaft (31) of the angular gear via a belt drive (24) is connected to the knife shaft (18).
- the feed device (8) consists essentially of two in opposite direction of rotation driven, can be pressed against each other Feed rollers (30, 32) that with their front end into an insertion funnel (34) on the peripheral surface of the housing (4) Detect introduced strapping and in the direction of the Move the cutting knife (18).
- the feed rollers (30, 32) each have a parallel to the axis of rotation (22) of the knife shaft (18) Axis of rotation on, so that the strapping with the axis of rotation (22) parallel broad side surfaces are drawn in.
- the two Feed rollers (30, 32) are against each other by spring force pressed so that their distance to the material thickness of the drawn Can adjust strapping.
- the insertion funnel is also in this embodiment (34) mounted on the rocker (56) so that when pressed on the radial outward-facing boundary surface (64) of the insertion funnel (34) the distance between the feed rollers (30,32) increases so that the move-in can be interrupted immediately.
- the upper feed roller (32) together with the knife shaft (18) on a support frame (57) fixed in the housing (4) and is shared with the knife shaft (18) driven by the belt drive (24) by the output shaft (31) of the angular gear (27) via one on the Knife shaft (18) attached pulley to the feed roller (32) and from there returned to the output shaft via a tensioning roller (59) is.
- the lower feed roller located on an arm (61) (30) is there together with the insertion funnel (34) Housing (4) slidably mounted in the vertical direction, wherein a pressure spring (58) acting on the arm (61) pressing the lower feed roller (30) against the driven feed roller (32) causes.
- the feed roller (30) By inserting a foreign body with a die Strapping thickness of the strapping straps exceeding a predetermined amount Thickness between the two feed rollers (30, 32) the feed roller (30) is pressed down and engages in one Position in which the contact between the two feed rollers (30, 32) is canceled. Another pulling in of the strapping, after the foreign body passes the feed rollers (30, 32) is prevented. At the same time, it guarantees together insertion funnel slidably mounted with the feed roller (30) (34) that by pushing down the insertion funnel, the Distance between the feed rollers (30, 32) increased and thus the move-in can be interrupted.
- the insertion funnel (34) is inserted into the cylindrical one by two Housing wall (36) each protruding from opposite Side edges of a rectangular recess (38) in the housing wall (36) wedge-shaped baffles (40, 41), the gap (42) between the inner ends of the Baffles (40, 41) is dimensioned so narrow that the strapping can only be inserted so that the feed rollers (30, 32) engage with their broad side surfaces.
- the insertion funnel (34) shown in FIGS. 12 and 13 a plurality of subdivisions (47) arranged perpendicular to the gap (42) to prevent two diagonally inserted straps overlay between the feed rollers (30, 32), whereby the Infeed should be interrupted as if a foreign body was passing through it could.
- a guide (43) is arranged, which has a narrow slot (45), in which the inner one of the feed rollers (30, 32) released end of the strapped tape until it is a little radial distance from the circular path the cutting knife (18) emerges from the slot (45).
- the slot (45) is both to the side, as well as up and down limited by guide surfaces, which prevents the strapping that is drawn in when the cutting knife strikes (18) bends and dodges or gets out of the way of the Cutting edges moved out.
- Each in the direction of rotation of the knife shaft (14) arranged limitation of the slot (45) also serves as an abutment for the strapping at the moment of impact the cutting knife (18).
- the housing (4) can be designed so that its upper part (48) around and opposite the insertion funnel (34) hinge (not shown) arranged below it the lower part (50) which is firmly connected to the stand (2) to open a horizontal swivel axis upwards.
- a Contact switch not shown, prevents the drive motor (10) can be switched on with the housing (4) open.
- At unfolded upper part (48) is both the cutting device (6) and the feed device (8) are easily accessible from below, so that the cutting knife (18) can be adjusted without difficulty or exchanged or maintenance work on the feed rollers without any problems (30, 32), the belt drives (18, 28) and the bearings can be carried out.
- the cylindrical housing wall is formed in one piece and has an upwardly open slot recess (70) into which Put on the housing cover (5) of the insertion funnel (34).
- a contact switch can also be provided here switching on the drive motor (10) with the housing (4) open prevented.
- a gripping protection (72) arranged with the Housing wall is welded.
- the grip guard (72) has the shape of a cone with the tip pointing upwards and is on its circumference through slot recesses (74) from the housing wall (23) separated so that the small-sized strapping pieces slide down the cone and down into the collection container (12) can fall.
- the gripping protection (72) should be in the event of an improper Handling an intervention into the web from below Prevent cutting knife (18).
- a gripping protection (72) is provided below and on the Feed rollers (30, 32) opposite side of the knife shaft (14) is arranged and a discharge opening in the lower part of its rear wall (73) for the small pieces of strapping having.
- the one used to catch the small pieces of strapping Plastic bag (12) is used to attach with its top Edge from below over the outer surface of the housing (4) and then using a clamp against the edge the outer surface of the housing (4) attachable clamp (52) or of a tensioned elastic rubber tension rope releasable attached.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Buffer Packaging (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Zerkleinern von ausgedienten Umreifungsbändern aus Kunststoff, die im wesentlichen in radialer Richtung einer zylindrischen Bahn, mindestens eines rotierenden Schneidmessers zugeführt und in kurze Stücke geschnitten werden und zwischen zwei von der Bahn des Schneidmessers angeordneten gegeneinander anpreßbaren Einzugsrollen vorgeschoben werden, von denen mindestens eine motorsich angetrieben wird.The invention relates to a method for shredding disused items Plastic strapping, which is essentially in radial direction of a cylindrical path, at least one rotating Cutting knife fed and cut into short pieces be arranged and between two of the path of the cutting knife feed rollers that can be pressed against each other are advanced, at least one of which is motor-driven.
Darüberhinaus betrifft die Erfindung eine Vorrichtung zum Zerkleiner von ausgedienten Umreifungsbändern mit mindestens einem auf einer zylindrischen Bahn rotierenden Schneidmesser, dem die Umreifungsbänder im wesentlichen in radialer Richtung zwischen zwei vor der Bahn des Schneidmessers angeordneten, gegeneinander anpreßbaren Einzugsrollen zuführbar sind, von denen mindestens eine motorisch angetrieben ist.In addition, the invention relates to a device for shredding of worn strapping with at least one a cylindrical track rotating cutting knife, which the strapping essentially in the radial direction between two in front the path of the cutting knife arranged, can be pressed against each other Feed rollers can be fed, at least one of which is motorized is driven.
Umreifungsbänder aus Kunststoff werden zu Transportzwecken eingesetzt und dabei verwendet, um Verpackungsbehälter, wie Holzkisten, Pappkartons oder dergleichen gegen unbeabsichtigtes Öffnen während des Transports zu sichern, oder um eine Mehrzahl von Transportbehältern beispielsweise auf einer Transportpalette zusammen- oder festzuhalten. Umreifungsbänder werden ferner eingesetzt, um schwerere Maschinenteile auf Transportpaletten gegen Verrutschen zu sichern, um bündelweise transportierte Gegenstände wie Rohre, Baustahlmatten, Briketts und vieles andere mehr zusammenzuschnüren oder um zusammengerollt transportierte Gegenstände, beispielsweise Teppiche oder andere Bodenbeläge zusammenzuhalten. Dabei werden die Umreifungsbänder mittels einer Spannvorrichtung um die zu sichernden, zusammenzuhaltenden oder miteinander zu verbindenden Verpackungsbehälter oder Gegenstände herumgespannt. Die früher zumeist verwendeten Umreifungsbänder aus dünnem Stahlblech wurden in den letzten Jahren zunehmend durch Umreifungsbänder aus Polypropylen oder aus anderen Kunststoffen ersetzt. Die jeweils beim Empfänger bzw. Abnehmer der transportierten Güter anfallenden ausgedienten Umreifungsbänder werden entweder nach einem Umschmelzen wiederverwertet, oder aber nach dem Durchtrennen dem Abfall zugeführt. Da sich die aus Polypropylen bestehenden Umreifungsbänder quer zu ihrer Längsrichtung nur schlecht falten oder knicken lassen und zudem eine hohe Elastizität aufweisen, benötigen sie allerdings in einem Sammel- oder Abfallbehälter verhältnismäßig viel Platz und sind zudem in größerer Menge nur schlecht handhabbar.Plastic strapping is used for transportation purposes and used to make packaging containers, like wooden boxes, Cardboard boxes or the like to prevent accidental opening secure during transportation, or to secure a plurality of To hold transport containers together or on a transport pallet, for example. Strapping is also used to counter heavy machine parts on transport pallets Secure slipping to bundle items transported such as pipes, steel mats, briquettes and much more or rolled up objects, for example holding carpets or other floor coverings together. The strapping is done by means of a tensioning device to be secured, held together or to be connected Packaging containers or objects strung around. The formerly mostly used strapping made of thin sheet steel have been increasingly characterized by strapping in recent years Polypropylene or replaced from other plastics. The each at the recipient or purchaser of the transported goods disused strapping will either be after remelting recycled, or after cutting the waste fed. Because the strapping made of polypropylene Fold or fold poorly across their length leave and also have a high elasticity, you need however, proportionately in a collection or waste container lots of space and are also difficult to handle in large quantities.
Aus diesem Grunde sind Vorrichtungen zum Zerkleinern der Umreifungsbänder bekannt. Diese besitzen ein rotierendes Schneidmesser, dessen Schneiden auf einer zylindrisichen Bahn bewegt werden. Dieser zylindrischen Bahn werden die Umreifungsbänder mit jeweils einem ihrer Enden zugeführt, so daß das Schneidmesser von jedem zugeführten Umreifungsband mit einem seiner Schneiden ein Stück abtrennt, das nach seinem Abtrennen in einen entsprechen angeordneten Aufbewahrungsbehälter fällt. Aus der FR-A-2 621 835 ist eine entsprechende Vorrichtung bekanntgeworden, die mit einem Zuführkanal versehen ist, durch den das Umreifungsband der zylindrischen Bahn des Schneidmessers zugeführt wird. In dem Zuführkanal ist ein Abtaster eines Schalters vorgesehenen, der einen das Schneidmesser antreibenden Antrieb steuert. Dieser Abtaster liegt im nicht eingeschalteten Zustand des Antriebs auf dem Boden des Zuführkanals auf. Sobald in den Zuführkanal ein zu verkleinerndes Umreifungsband eingeführt wird, hebt dieses Umreifungsband den Abtaster an. Durch die Anhebung des Abtasters wird der Schalter betätigt, der nach Anheben des Abtasters den Antrieb des Schneidmessers einschaltet. Dabei bleibt der Einschaltzustand bestehen, unanhängig davon, ob der Abtaster mehr oder minder hoch von dem eingeführten Umreifungsband angehoben wird.For this reason there are devices for crushing the strapping known. These have a rotating cutting knife, the cutting edges of which are moved on a cylindrical path. This The straps are cylindrical with one each fed their ends so that the cutting knife fed from each Strapping cuts off one piece with one of its cutting edges, that after its separation into a correspondingly arranged Storage container falls. FR-A-2 621 835 is one Corresponding device has become known, with a feed channel is provided, through which the strapping of the cylindrical Path of the cutting knife is fed. There is a in the feed channel Scanner provided a switch, the one of the cutting knife driving drive controls. This scanner is not switched on Condition of the drive on the bottom of the feed channel on. As soon as a strapping to be reduced into the feed channel is inserted, this strapping lifts the scanner. The switch is actuated by raising the scanner switches on the drive of the cutting knife after lifting the scanner. The switch-on status remains unchanged whether the scanner is more or less high than the one introduced Strapping is raised.
Das Schneidmesser rotiert daher auch dann, wenn sich seiner zylindrischen Bahn eine von Metallklammern oder auf sonstige Weise zusammengehaltene Verbindungsstelle nähert. Gelangt die Metallklammer oder ein anderer Fremdkörper mit dem Umreifungsband in die zylindrische Bahn des Schneidmessers, so muß befürchtet werden, daß dieses beschädigt wird, wenn es auf die Metallklammer bzw. den Fremdkörper oder auch nur auf eine verdickte Stelle des Umreifungsbandes auftrifft. The cutting knife therefore rotates even when it is cylindrical Track one held together by metal clips or otherwise Junction approaching. Get the metal clip or another foreign body with the strapping into the cylindrical Path of the cutting knife, it must be feared that this will be damaged if it is on the metal clip or Foreign body or even on a thickened part of the strapping hits.
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren und eine Vorrichtung der eingangs genannten Arten zu entwickeln, um die Handhabung der ausgedienten Umreifungsbänder zu verbessern, und gegebenenfalls ihr Wiederverwertung zu erleichtern.The object of the present invention is therefore a method and to develop a device of the types mentioned in the introduction in order to improve the handling of the worn strapping, and, if necessary, to facilitate their recycling.
Diese Aufgabe ist beim Verfahren nunmehr dadurch gelöst, daß der Einzug der Umreifungsbänder bei Überschreiten eines zwischen den Einzugsrollen vorgegebenen Abstandes unterbrochen wird.This problem is now solved in the method in that the The strapping is pulled in if one is exceeded between the Feed rollers is interrupted predetermined distance.
Dadurch wird verhindert, daß zum Zusammenhalten der Umreifungsbänder dienende Metallklammern oder dergleichen Fremdkörper zu einer Beschädigung des Schneidmessers führen. Hinsichtlich der Vorrichtung wird diese Aufgabe nunmehr dadurch gelöst, daß eine eine weitere Zufuhr von Umreifungsbändern zum Schneidmesser automatisch unterbrechende Sicherheitsvorrichtung vorgesehen ist, die bei Überschreiten eines zwischen den Einzugsrollen vorgegebenen Abstandes eingeschaltet ist.This prevents the straps from being held together serving metal clips or the like foreign objects to one Damage to the cutting knife. Regarding the device this problem is now solved in that a further Automatic feeding of strapping to the cutting knife interrupting safety device is provided, which at Exceeding a predetermined distance between the feed rollers is switched on.
Mit Hilfe dieser Sicherheitsvorrichtung wird beim Überschreiten eines vorgeschriebenen gegenseitigen Abstandes der Einzugsrollen, z.B. beim Passieren einer Stahlklammer oder dergleichen, zwischen den Einzugsrollen die gegenseitige Anpressung der Einzugsrollen bis zu einem erneuten manuellen Inbetriebsetzen aufgehoben und damit der Einzug des Umreifungsbandes unterbrochen. Dadurch wird nicht nur verhindert, daß die Schneidkanten des Schneidmessers durch Fremdstoffe oder verdickte Teile des Umreifungsbandes beschädigt werden, sondern die Umreifungsbänder können auch für eine Wiederverwertung sortenrein, d.h. ohne Fremdstoffe, in einem unterhalb der Bahn der Schneidmesser angeordneten Behälter auf engem Raum gesammelt und zwischengelagert werden.With the help of this safety device is exceeded a prescribed mutual distance between the feed rollers, e.g. when passing a steel clamp or the like, between the feed rollers the mutual pressure of the feed rollers canceled until a new manual commissioning and thus the strapping is interrupted. This will not only prevents the cutting edges of the cutting knife damaged by foreign matter or thickened parts of the strapping but the straps can also be used for a Recycling sorted, i.e. without foreign matter, in one below the path of the cutting knife arranged container on a narrow Space is collected and stored temporarily.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung werden die Umreifungsbänder der zylindrischen Bahn des Schneidmessers so in ihrer Längsrichtung von außen her zugeführt, daß die Umreifungsbänder zwischen dem rotierenden Schneidmesser und einem stationären Statormesser zerschnitten werden, wobei die Schneidkante des Schneidmessers in geringem Abstand an einer Messerkante des Statormessers vorbeigeführt wird. Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht dabei vor, daß die Schneidkante und die Messerkante leicht gegeneinander geneigt sind, so daß die Umreifungsbänder, wie bei einem Durchtrennen mit einer Schere, fortlaufend stetig über die Breitseitenflächen der Umreifungsbänder hinweg durchtrennt werden, wobei das Abscheren jeweils punktförmig erfolgt und kontinuierlich über die Breitseitenflächen fortschreitet. Gleichzeitig erfolgt der Vorschub der Umreifungsbänder vorteilhaft mit gleichförmiger Geschwindigkeit, so daß die Umreifungsbänder schräg zu ihrer Längsrichtung durchtrennt werden. Durch diese Maßnahmen wird erreicht, daß die auf die Bauteile der Vorrichtung ausgeübten Reaktionskräfte geringer sind und daß die das Schneidmesser tragende Messerwelle runder läuft.According to an advantageous embodiment of the invention, the Strapping the cylindrical path of the cutting knife so in fed their longitudinal direction from the outside that the strapping between the rotating cutting knife and a stationary one Stator knives are cut, the cutting edge of the Cutting knife at a short distance on a knife edge of the stator knife is led past. Another advantageous embodiment the invention provides that the cutting edge and the knife edge is slightly inclined towards each other so that the strapping, like cutting with scissors, continuously steadily over the broad sides of the strapping be cut away, the shearing each point takes place and progresses continuously over the broad side surfaces. At the same time, the straps are advantageously fed at a uniform speed so that the strapping be cut diagonally to their longitudinal direction. These measures ensure that the components of the Applied reaction forces are lower and that the the cutter shaft carrying the cutter shaft runs more smoothly.
Um sicherzustellen, daß die Umreifungsbänder beim Auftreffen des Schneidmessers nicht ausweichen, sieht eine weitere vorteilhafte Ausgestaltung der Erfindung vor, daß die Umreifungsbänder vor Erreichen der Bahn des Schneidmessers geführt werden. Die Führung für die Umreifungsbänder wird dabei vorteilhafterweise durch ein außerhalb der Bahn des rotierenden Schneidmessers angeordnetes Statormesser sowie eine dem Statormesser gegenüberliegende Führungsfläche gebildet, die mit dem Statormesser einen sich in radialer Richtung auf das Schneidmesser zu verengenden Führungsschlitz bildet, wobei das Statormesser beim Auftreffen des Schneidmessers auf das Umreifungsband gleichzeitig als Widerlager für dasselbe dient.To ensure that the strapping when the Cutting knife does not dodge, sees another beneficial Embodiment of the invention that the strapping before reaching the path of the cutting knife. The leadership for the strapping is advantageously by a arranged outside the path of the rotating cutting knife Stator knife and a guide surface opposite the stator knife formed with the stator knife one in radial Direction of the guide slot to be narrowed on the cutting knife forms, the stator knife when hitting the cutting knife on the strapping at the same time as an abutment for the same serves.
Um zu verhindern, daß zum Zusammenhalten der Umreifungsbänder dienende Metallklammern oder dergleichen Fremdkörper zu einer Beschädigung des Schneidmessers führen, sieht die Erfindung vor, daß der Einzug der Umreifungsbänder automatisch gestoppt wird, wenn die Dicke der Fremdkörper einen vorgegebenen Wert übersteigt.To prevent the straps used to hold the straps together Metal clips or similar foreign objects to damage lead of the cutting knife, the invention provides that the The strapping stops automatically when the Thickness of the foreign body exceeds a predetermined value.
Die Umreifungsbänder werden zum Einziehen von zwei gegeneinander angepreßten Einzugsrollen erfaßt, von denen mindestens eine motorisch angetrieben wird. Die Einzugsrollen werden entsprechend der Stärke der Umreifungsbänder auseinandergedrückt, wobei beim Überschreiten eines vorgegebenen gegenseitigen Abstands, z.B. beim Passieren einer Stahlklammer oder dergleichen zwischen den Einzugsrollen die gegenseitige Anpressung der Einzugsrollen vorzugsweise bis zu einem erneuten manuellen Inbetriebsetzen aufgehoben und damit der Einzug des Umreifungsbandes unterbrochen wird.The straps are used to pull two against each other pressed feed rollers, of which at least one is motorized is driven. The feed rollers will change accordingly the strength of the strapping pressed apart, with the Exceeding a predetermined mutual distance, e.g. at the Passing a steel clamp or the like between the feed rollers the mutual pressure of the feed rollers preferably canceled until a new manual commissioning and thus the feeding of the strapping is interrupted.
Die Schneidmesser können um eine vertikale Drehachse rotieren, eine bevorzugte Ausgestaltung der Erfindung sieht allerdings vor, daß die Drehachse horizontal ausgerichtet ist, wodurch es insbesondere erleichtert wird, mehrere Umreifungsbänder gleichzeitig den Schneidmessern zuzuführen, da die Umreifungsbänder in diesem Fall mit nach oben und unten weisenden Breitseitenflächen nebeneinander in den Führungsschlitz eingeführt werden können, dessen Breite hier vorteilhafterweise ein Mehrfaches des Breite der Umreifungsbänder beträgt. In beiden Fällen ist der Antrieb der Schneidmesser zweckmäßig oberhalb der Kreisbahn der Schneidmesser angeordnet, so daß er weder den Einzug der Umreifungsbänder behindert, noch durch die kleingeschnittenen Umreifungsbandstücke verschmutzt werden kann.The cutting knives can rotate around a vertical axis of rotation, however, a preferred embodiment of the invention provides that the axis of rotation is aligned horizontally, which makes it in particular is facilitated, several straps at the same time the cutting knives because the strapping in this Case with broad and upside down side by side can be inserted into the guide slot, the Width here advantageously a multiple of the width of the strapping is. In both cases the drive is the The cutting knife is appropriate above the circular path of the cutting knife arranged so that it does not prevent the strapping from being pulled in, still contaminated by the small cut strapping pieces can be.
Eine weitere bevorzugte Ausgestaltung der Erfindung sieht vor, daß die Schneidkante des Schneidmessers im wesentlichen in axialer Richtung, d. h. parallel zur Drehachse ausgerichtet ist und zum Zerschneiden der Umreifungsbänder mit der Messerkante des Statormessers zusammenwirkt, die vorzugsweise gegenüber der Schneidkante geneigt ist. Der vorteilhafterweise verstellbare Neigungswinkel zwischen der Schneidkante und der Messerkante beträgt zweckmäßig zwischen 1 und 10 Grad, vorzugsweise etwa 5 Grad. Prinzipiell kann auch die Messerkante in axialer Richtung ausgerichtet und die Schneidkante gegenüber der Messerkante um einige Grad geneigt sein. Bei mehreren Schneidmessern ist die zuerst genannte Alternative allerdings weniger aufwendig.Another preferred embodiment of the invention provides that the cutting edge of the cutting knife essentially in axial Direction, d. H. is aligned parallel to the axis of rotation and to Cut the strapping with the knife edge of the stator knife interacts, which is preferably opposite the cutting edge is inclined. The advantageously adjustable angle of inclination between the cutting edge and the knife edge is appropriate between 1 and 10 degrees, preferably about 5 degrees. In principle can also the knife edge aligned in the axial direction and the Cutting edge inclined by a few degrees in relation to the knife edge be. If there are several cutting blades, the first alternative is mentioned however less expensive.
Gemäß einer weiteren bevorzugten Ausgestaltung der Erfindung werden die Umreifungsbänder vor Erreichen der Bahn des Schneidmessers geführt, wobei die Führung zweckmäßig mindestens teilweise durch einen sich in Richtung auf die Bahn des Schneidmessers zu verengenden Führungsschlitz gebildet wird. Kurz vor Erreichen der Kreisbahn der Schneidmesser wird die Umreifungsbandführung vorteilhafterweise in Drehrichtung durch eine ein Widerlager bildende Seitenfläche des Statormessers gebildet, gegen die sich das Umreifungsband beim Auftreffen des Schneidmessers mit seiner Breitseitenfläche anlegen kann.According to a further preferred embodiment of the invention the strapping before reaching the cutting knife path performed, the leadership expediently at least partially one to narrow towards the path of the cutting knife Guide slot is formed. Shortly before reaching the Circular path of the cutting knife is advantageously the strapping in the direction of rotation by an abutment Side surface of the stator knife formed, against which the strapping when the cutting knife strikes with its broad side surface can put on.
Um eine Unwucht einer die Schneidmesser tragenden Messerwelle zu vermeiden, sieht eine vorteilhafte Ausgestaltung der Erfindung vor, daß mehrere Schneidmesser in regelmäßigen Winkelabständen voneinander jeweils im gleichen Abstand von der Drehachse auf der Messerwelle angeordnet sind. Ein Nachschleifen stumpf gewordener Schneidmesser wird gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung dadurch vereinfacht, daß die Schneidmesser lösbar auf der Messerwelle angeordnet sind.To unbalance a knife shaft carrying the cutting knives avoid sees an advantageous embodiment of the invention before that several cutting knives at regular angular intervals from each other at the same distance from the axis of rotation on the Knife shaft are arranged. A regrinding of dull ones Cutting knife is according to a further advantageous embodiment simplified the invention in that the cutting knife releasably are arranged on the knife shaft.
Bei Vorrichtungen mit vertikaler Drehachse ist die Messerwelle gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung einseitig an ihrem oberen Ende in einem Radial/Axiallager gelagert und wird unmittelbar von der Abtriebswelle eines Elektromotors oder über einen Riementrieb angetrieben. Demgegenüber kann die Messerwelle bei Vorrichtungen mit horizontaler Drehachse an beiden Stirnenden gelagert sein. Von dem die Messerwelle antreibenden Elektromotor wird zweckmäßig weiter mindestens eine von zwei hinter einer Einführöffnung für die Umreifungsbänder angeordneten und gegeneinander anpreßbaren Einzugsrollen angetrieben, welche die mit ihrem vorderen Ende durch die Einführöffnung zugeführten Umreifungsbänder erfassen und nach innen zur Kreisbahn des Schneidmessers transportieren.For devices with a vertical axis of rotation, the knife shaft is in accordance with a further advantageous embodiment of the invention one-sided supported at its upper end in a radial / axial bearing and is directly from the output shaft of an electric motor or driven by a belt drive. In contrast, the Knife shaft for devices with a horizontal axis of rotation on both Be front-mounted. Of which drives the knife shaft Electric motor is expediently further behind at least one of two an insertion opening for the straps arranged and pressable feed rollers against each other, which the with its front end through straps fed through the insertion opening capture and inwards to the circular path of the cutting knife transport.
Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung ist unterhalb der Kreisbahn des Schneidmessers ein Sammelbehälter lösbar befestigbar, der zweckmäßig als Sack oder als Beutel ausgebildet ist, und dessen oberen Rand an einer unteren Auslaßöffnung eines die gesamte Schneidvorrichtung einschließenden Gehäuses lösbar befestigbar ist. According to a further advantageous embodiment of the invention a collecting container can be detached below the circular path of the cutting knife attachable, which is expediently designed as a sack or a bag is, and the upper edge of a lower outlet opening the entire cutter enclosing housing releasably is attachable.
Um eine mögliche Verletzungsgefahr bei unsachgemäßer Handhabung auszuschließen, sieht eine weitere vorteilhafte Ausgestaltung der Erfindung vor, daß zwischen dem Sammelbehälter und der Bahn des Schneidmessers ein Greifschutz angeordnet ist, der verhindert, daß bei abgenommenem Sammelbehälter mit der Hand von unten her in die Bahn des Schneidmessers eingegriffen werden kann. Um ein Abnehmen des Greifschutzes zu erschweren, ist dieser zweckmäßig fest mit der Gehäusewand verbunden und mit mindestens einer Durchtrittsöffnung für die kleingeschnittenen Umreifungsbandstücke versehen.To a possible risk of injury from improper handling exclude sees a further advantageous embodiment of the Invention before that between the container and the web of Cutting knife a gripping protection is arranged, which prevents with the collection container removed, hand into the bottom from below Path of the cutting knife can be intervened. To lose weight to make gripping protection more difficult, this is conveniently fixed the housing wall connected and with at least one passage opening provided for the small-cut strapping pieces.
Das Gehäuse ist dabei in vorteilhafter Weise so ausgebildet, daß es nach oben durch einen Deckel verschließbar ist, auf welchem der Antriebsmotor oder ein mit dem Antriebsmotor verbundenes Getriebe angeflanscht ist, und in welchem bei vertikaler Drehachse die Messerwelle und die Einzugsrollen gelagert sind. Zwischen dem Deckel und dem Gehäuse kann ein Kontaktschalter angeordnet sein, so daß der Antrieb des Motors beim Öffnen des Deckels automatisch abgeschaltet wird.The housing is advantageously designed so that it can be closed at the top by a lid on which the Drive motor or a gear connected to the drive motor is flanged, and in which the vertical axis of rotation Knife shaft and the feed rollers are stored. Between the lid and a contact switch can be arranged in the housing, so that the motor drive is automatically switched off when the lid is opened becomes.
Die Sicherheitsvorrichtung unterbricht den Einzug der Umreifungsbänder, um zu verhindern, daß die Schneidmesser durch einen Fremdkörper beschädigt werden, beispielsweise durch eine zwei Enden eines Umreifungsbandes miteinander verbindende Stahlklammer. Sie verhindert den Einzug dieser Stahlklammer und anderer Fremdkörper, die in ihren Abmessungen größer sind als die Stärke der Umreifungsbänder. Zu diesem Zwecke unterbricht die Sicherheitsvorrichtung den Einzug der Umreifungsbänder, wenn der Abstand zwischen den Einzugsrollen ein vorgegebenes Maß übersteigt.The safety device stops the strapping from being pulled in, to prevent the cutting knife from being caught by a foreign object be damaged, for example by a two ends of one Strapping band connecting steel clamp. she prevents the entry of this steel clamp and other foreign objects, which are larger in size than the strength of the strapping. The safety device interrupts for this purpose the strapping retraction when the distance between the feed rollers exceed a predetermined size.
Dabei sieht eine weitere vorteilhafte Ausgestaltung der Erfindung vor, daß eine der Einzugsrollen auf einem verschiebbaren oder verschwenkbaren Arm gelagert ist, der unter Vergrößerung des Abstands zwischen den Einzugsrollen entgegen der Kraft einer Feder verschoben oder verschwenkt wird und bei Überschreiten eines vorgegebenen Schwenkweges automatisch in dieser Schwenkstellung arretiert wird. Die auf dem Arm gelagerte Einzugsrolle wird so nicht länger gegen die andere Einzugsrolle angepreßt, wodurch der Einzug, unmittelbar nachdem der Fremdkörper die Einzugsrollen passiert hat bzw. schom beim Passieren der Einzugsrollen unterbrochen wird. Der Abstand der Einzugsrollen von der Bahn des Schneidmessers ist dabei zweckmäßigerweise so groß gewählt, daß der Fremdkörper zu diesem Zeitpunkt mit seinem vorderen Ende die Bahn des Schneidmessers noch nicht erreicht hat.This provides a further advantageous embodiment of the invention before that one of the feed rollers on a slidable or pivotable Arm is mounted, increasing the distance shifted between the feed rollers against the force of a spring or is pivoted and when a predetermined one is exceeded Swivel path is automatically locked in this swivel position. The feed roller mounted on the arm is no longer counter pressed the other feed roller, causing the feed, immediately after the foreign body has passed through the feed rollers or schom is interrupted when passing through the feed rollers. The distance the feed rollers from the path of the cutting knife is expedient chosen so large that the foreign body at that time with its front end the path of the cutting knife still has not reached.
Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, daß ein die Gehäusewand durchsetzender Einführtrichter für die Umreifungsbänder zusammen mit der Einzugsrolle verschiebbar oder verschwenkbar ist, so daß bei Ausüben einer Druckkraft auf eine Fläche des Einführtrichters der Abstand zwischen den Einzugsrollen vergrößert und damit der Einzug ebenfalls sofort unterbrochen wird.Another advantageous embodiment of the invention provides that an insertion funnel penetrating the housing wall for the strapping slidable together with the feed roller or is pivotable so that when a compressive force is exerted on a Area of the insertion funnel the distance between the feed rollers enlarged and thus the feed also immediately interrupted becomes.
Im folgenden wird die Erfindung anhand dreier in der Zeichnung in
schematischer Weise dargestellter Ausführungsbeispiele näher erläutert.
Es zeigen:
Die in der Zeichnung dargestellte Vorrichtung zum Entsorgen von ausgedienten Umreifungsbändern aus Polypropylen oder einem anderen Kunststoffmaterial besteht im wesentlichen aus einem zylindrischen, von einem Ständer (2) getragenen Gehäuse (4), einer im Inneren des Gehäuses (4) angeordneten Schneidvorrichtung (6), mit der die Umreifungsbänder in kleine Stücke zerschnitten werden, einer Einzugsvorrichtung (8), durch welche die Umreifungsbänder der Schneidvorrichtung (6) zugeführt werden, einem Antriebsmotor (10) zum Antreiben der Schneidvorrichtung (6) und der Einzugsvorrichtung (8), sowie einem unterhalb des Gehäuses (4) lösbar befestigbaren Sammelbehälter (12).The device shown in the drawing for the disposal of disused strapping made of polypropylene or another Plastic material consists essentially of a cylindrical, by a stand (2) supported housing (4), one in Inside the housing (4) arranged cutting device (6), with who cut the straps into small pieces, one Feeding device (8) through which the strapping of Cutting device (6) are supplied, a drive motor (10) for driving the cutting device (6) and the feeding device (8), as well as a detachably attachable underneath the housing (4) Collection container (12).
Die Schneidvorrichtung (6) besteht im wesentlichen aus einer motorisch angetriebenen, eine Mehrzahl von Schneidmessern (18) tragenden Messerwelle (14), deren Drehachse (22) bei den in den Figuren 1 bis 5 dargestellten Ausführungsbeispielen vertikal ausgerichtet ist, wohingegen das in den Figuren 6 bis 9 dargestellte Ausführungsbeispiel eine horizontale Drehachse (22) aufweist. Bei den zuerst genannten Ausführungsbeispielen ist die Messerwelle (14) einseitig nach unten überstehend in einem das Gehäuse (4) auf seiner oberen Stirnseite verschließenden Deckel (5) gelagert und weist in gleichmäßigen Winkelabständen Messerböcke (16) auf, die jeweils ein Schneidmesser (18) tragen. Die Messerwelle (14) kann an ihrem unteren Ende mit einem Messerteller (11) versehen sein, über welchen mehrere in gleichmäßigen Winkelabständen angeschweißte Messerböcke (16) nach unten überstehen, an denen jeweils ein Schneidmesser (18) mit Halteschrauben lösbar befestigt ist. Bei dem in den Figuren 5 bis 9 dargestellten Ausführungsbeispiel stehen zwei zur Messerwelle (14) konzentrische Haltescheiben (9) im Abstand voneinander radial über diese über, wobei die Schneidmesser (18) zwischen den Haltescheiben (9) angeordnet und in Schlitzausnehmungen (7) am Umfang der Haltescheiben (9) starr eingesetzt sind. Die Schneidmesser (18) sind stets derart befestigt, daß ihre keilförmig geschliffene Schneidkante (20) in Drehrichtung weist und beim Drehen der Messerwelle (14) eine zylindrische Bahn beschreibt.The cutting device (6) consists essentially of a motor driven, carrying a plurality of cutting knives (18) Knife shaft (14), the axis of rotation (22) of which in the figures 1 to 5 illustrated embodiments aligned vertically is, whereas the embodiment shown in Figures 6 to 9 has a horizontal axis of rotation (22). Both the first-mentioned exemplary embodiments is the knife shaft (14) protruding downward on one side in a housing (4) on it the top end of the closing lid (5) and has knife blocks (16) at regular angular intervals, which each carry a cutting knife (18). The knife shaft (14) can be provided with a knife plate (11) at its lower end, over which several welded at uniform angular intervals Knife blocks (16) protrude downwards, one at each Cutting knife (18) is releasably attached with retaining screws. At are the embodiment shown in Figures 5 to 9 two holding discs (9) concentric to the knife shaft (14) Distance from each other radially over this, with the cutting knife (18) arranged between the holding disks (9) and in slot recesses (7) rigidly inserted on the circumference of the holding disks (9) are. The cutting blades (18) are always attached so that their wedge-shaped ground cutting edge (20) points in the direction of rotation and describes a cylindrical path when rotating the knife shaft (14).
Die Schneidmesser (18) weisen jeweils eine in Drehrichtung weisende Breitseitenfläche (21) auf, von welcher die abgeschnittenen Umreifungsbandstücke tangential nach außen gegen die Innenseite der zylindrischen Gehäusewand (23) bzw. gegen einen Greifschutz (72) (Fig.6) geschleudert werden, so daß die Messerböcke (16) selbst keinem Verschleiß unterliegen.The cutting knives (18) each have one pointing in the direction of rotation Broad side surface (21), from which the cut Strapping pieces tangentially outwards against the inside the cylindrical housing wall (23) or against a gripping protection (72) (Fig. 6) are thrown so that the knife blocks (16) themselves are not subject to wear.
Die Schneidmesser (18) sind bei den in den Figuren 6 bis 9 dargestellten Ausführungsbeispielen jeweils bezüglich der Drehachse "schräg gestellt", d. h. ihre Schneidkante (20) schließt auf der zylindrischen Bahn einen spitzen Neigungswinkel mit den zur Drehachse (22) parallelen Geraden ein. Bei dem Ausführungsbeispiel in Figur 6 und 7 wird die Schrägstellung dadurch erreicht, daß die Schlitzausnehmungen (7) der beiden Haltescheiben (9) winkelversetzt angeordnet sind. Der Neigungswinkel kann zudem veränderbar sein, wenn die Schneidmesser (18) jeweils um eine bezüglich der Drehachse (22) radiale Verstellachse kippbar auf den Messerböcken (16) festgeschraubt sind. Die schräg gestellten Schneidmesser wirken mit einem außerhalb der zylindrischen Bahn der Schneidkanten (20) angeordneten Statormesser (17) zusammen, dessen Messerkante (15) parallel zur Drehachse (22) ausgerichtet ist.The cutting knives (18) are the ones shown in FIGS. 6 to 9 Embodiments with respect to the axis of rotation "slanted", i.e. H. its cutting edge (20) closes on the cylindrical path has an acute angle of inclination with the Axis of rotation (22) parallel straight lines. In the embodiment in Figures 6 and 7, the inclination is achieved in that the Slot recesses (7) of the two holding disks (9) offset at an angle are arranged. The angle of inclination can also be changed be when the cutting knives (18) are each one with respect The axis of rotation (22) of the radial adjustment axis can be tilted on the knife stands (16) are screwed tight. The slanted cutting knives act with an outside of the cylindrical path of the cutting edges (20) arranged stator knife (17) together, the knife edge (15) is aligned parallel to the axis of rotation (22).
Demgegenüber sind die Schneidkanten (20) der Schneidmesser (18) bei dem in den Figuren 1 bis 5 dargestellten Ausführungsbeispiel parallel zur Drehachse (22) ausgerichtet und wirken dort mit einem Statormesser (17) zusammen, das derart auf einer Messerhalterung (19) befestigt ist, daß seine in geringem radialem Abstand außerhalb der Bahn der Schneidkanten (20) angeordnete Messerkante gegenüber den Schneidkanten (20) um etwa 5° geneigt ist.In contrast, the cutting edges (20) of the cutting knives (18) in the embodiment shown in Figures 1 to 5 aligned parallel to the axis of rotation (22) and act there with a Stator knife (17) together, so on a knife holder (19) is attached that its a short radial distance outside opposite the path of the cutting edges (20) arranged knife edge the cutting edges (20) is inclined by approximately 5 °.
Der zwischen den Schneidkanten (20) der Schneidmesser (18) und der Messerkante (15) des Statormessers (17) gebildete Winkel bewirkt, daß die radial zugeführten Umreifungsbänder wie mit einer Schere über ihre Breitseiten hinweg durchschnitten werden, wobei der Punkt, an dem sich die Schneidkante (20) und die Messerkante (15) schneiden, beim Drehen der Messerwelle (14) kontinuierlich über die Breitseitenflächen der Umreifungsbänder wandert. Die Umreifungsbänder werden dadurch je nach dem Verhältnis zwischen der Umdrehungsgeschwindigkeit der Schneidmesser und der Einzugsgeschwindigkeit mehr oder weniger schräg abgeschnitten.The between the cutting edges (20) of the cutting knife (18) and the Knife edge (15) of the stator knife (17) causes angles formed, that the radially fed strapping like with scissors are cut across their broad sides, the Point at which the cutting edge (20) and the knife edge (15) cut when turning the knife shaft (14) continuously over the broad sides of the strapping migrates. The strapping this will depend on the ratio between the speed of rotation the cutting knife and the feed speed cut off more or less at an angle.
Die Messerwelle (14) wird von dem als Elektromotor ausgebildeten, auf dem Deckel (5) des Gehäuses (4) angebrachten Antriebsmotor (10) angetrieben. Der Antrieb der Messerwelle (14) kann über einen Riementrieb (24) erfolgen oder starr mit der Abtriebswelle des Elektromotors gekuppelt sein. In den Figuren 6 bis 9 ist ein Ausführungsbeispiel dargestellt, bei dem ein am Antriebsmotor (10) angeflanschtes Winkelgetriebe (27) auf dem Deckel (5) des Gehäuses (4) befestigt ist, wobei eine zur Drehachse (22) parallele horizontale Abtriebswelle (31) des Winkelgetriebes über einen Riementrieb (24) mit der Messerwelle (18) verbunden ist.The knife shaft (14) is formed by the electric motor drive motor attached to the cover (5) of the housing (4) (10) driven. The drive of the knife shaft (14) can be via a Belt drive (24) or rigid with the output shaft of the Be coupled to the electric motor. In Figures 6 to 9 is a Exemplary embodiment shown, in which a drive motor (10) flanged bevel gear (27) on the cover (5) of the housing (4) is attached, a horizontal parallel to the axis of rotation (22) Output shaft (31) of the angular gear via a belt drive (24) is connected to the knife shaft (18).
Die Einzugsvorrichtung (8) besteht im wesentlichen aus zwei in entgegengesetzter Drehrichtung angetriebenen, gegeneinander anpreßbaren Einzugsrollen (30, 32), die die mit ihrem vorderen Ende in einen Einführtrichter (34) auf der Umfangsfläche des Gehäuses (4) eingeführte Umreifungsbänder erfassen und in Richtung auf die Bahn der Schneidmesser (18) zu bewegen. Die Einzugsrollen (30, 32) weisen jeweils eine zur Drehachse (22) der Messerwelle (18) parallele Drehachse auf, so daß die Umreifungsbänder mit zur Drehachse (22) parallelen Breitseitenflächen eingezogen werden. Die beiden Einzugsrollen (30, 32) werden durch Federkraft gegeneinander angepreßt, so daß sich ihr Abstand an die Materialstärke des eingezogenen Umreifungsbands anpassen kann. The feed device (8) consists essentially of two in opposite direction of rotation driven, can be pressed against each other Feed rollers (30, 32) that with their front end into an insertion funnel (34) on the peripheral surface of the housing (4) Detect introduced strapping and in the direction of the Move the cutting knife (18). The feed rollers (30, 32) each have a parallel to the axis of rotation (22) of the knife shaft (18) Axis of rotation on, so that the strapping with the axis of rotation (22) parallel broad side surfaces are drawn in. The two Feed rollers (30, 32) are against each other by spring force pressed so that their distance to the material thickness of the drawn Can adjust strapping.
Im Unterschied dazu kann jeweils nur eine der beiden Einzugsrollen (32) von einem Riemenantrieb (24, 28) angetrieben werden. Bei dem Ausführungsbeispiel der Figuren 1 bis 5 ist die andere Einzugsrolle (30) auf einer um eine Schwenkachse (54) verschwenkbaren Schwinge (56) schwenkbar gelagert. Eine auf die Schwinge (56) einwirkende Druckfeder (58) bewirkt, daß die auf der Schwinge (56) gelagerte Einzugsrolle (30) gegen die angetriebene Einzugsrolle (32) angepreßt wird. Im Deckel (5) des Gehäuses ist ein Arretierungsorgan (60) in vertikaler Richtung verschiebbar gelagert, dessen unteres Ende auf der Oberseite der Schwinge (56) gleitet und bei Überschreiten eines vorgegebenen Schwenkwinkels an einer vertikalen Begrenzungsfläche (61) der Schwinge (56) entlang nach unten gleitet, so daß die Schwinge (56) in ihrer Schwenklage arretiert wird. Zum Lösen der Arretierung weist das Arretierungsorgan (60) einen nach oben über den Gehäusedeckel (5) überstehenden Handgriff (62) auf, an welchem sie nach oben gezogen werden kann. Neben der Druckfeder (58) ist ein nicht dargestellter Anschlag vorgesehen, der den Schwenkwinkel der Schwinge (56) auf einen vorgegebenen Wert begrenzt.In contrast, only one of the two feed rollers can be used at a time (32) are driven by a belt drive (24, 28). In which Embodiment of Figures 1 to 5 is the other feed roller (30) on a pivotable about a pivot axis (54) Swing arm (56) is pivotally mounted. One acting on the rocker (56) Compression spring (58) causes that on the rocker (56) mounted feed roller (30) against the driven feed roller (32) is pressed. There is a locking element in the cover (5) of the housing (60) slidably mounted in the vertical direction, the lower end on the top of the rocker (56) slides and when a predetermined swivel angle on a vertical is exceeded Boundary surface (61) of the rocker (56) downwards slides so that the rocker (56) locks in its pivoted position becomes. The locking member has to release the locking (60) one protruding upwards over the housing cover (5) Handle (62) on which it can be pulled upwards. In addition to the compression spring (58) is a stop, not shown provided that the pivot angle of the rocker (56) to a predetermined Value limited.
Weiter ist bei diesem Ausführungsbeispiel auch der Einführtrichter (34) auf der Schwinge (56) montiert, so daß bei Druck auf die radial nach außen gerichtete Begrenzungsfläche (64) des Einführtrichters (34) der Abstand zwischen den Einzugsrollen (30,32) vergrößert und damit der Einzug unmittelbar unterbrochen werden kann.Furthermore, the insertion funnel is also in this embodiment (34) mounted on the rocker (56) so that when pressed on the radial outward-facing boundary surface (64) of the insertion funnel (34) the distance between the feed rollers (30,32) increases so that the move-in can be interrupted immediately.
Bei dem Ausführungsbeispiel der Figuren 6 bis 9 ist die obere Einzugsrolle (32) gemeinsam mit der Messerwelle (18) auf einem Tragrahmen (57) im Gehäuse (4) ortsfest gelagert und wird gemeinsam mit der Messerwelle (18) vom Riementrieb (24) angetrieben, der von der Abtriebswelle (31) des Winkelgetriebes (27) über eine auf der Messerwelle (18) befestigte Riemenscheibe zur Einzugsrolle (32) und von dort über eine Spannrolle (59) zur Abtriebswelle zurückgeführt ist. Die untere, auf einem Arm (61) angeordnete Einzugsrolle (30) ist dort zusammen mit dem Einführtrichter (34) im Gehäuse (4) in vertikaler Richtung verschiebbar gelagert, wobei eine auf den Arm (61) einwirkende Druckfeder (58) ein Anpressen der unteren Einzugsrolle (30) gegen die angetriebene Einzugsrolle (32) bewirkt. Durch Einführen eines Fremdkörpers mit einer die Bandstärke der Umreifungsbänder um ein vorgegebenes Maß überschreitenden Dicke zwischen die beiden Einzugsrollen (30, 32) wird die Einzugsrolle (30) nach unten gedrückt, und rastet in einer Stellung ein, in der der Kontakt zwischen den beiden Einzugsrollen (30, 32) aufgehoben ist. Ein weiteres Einziehen des Umreifungsbands, nachdem der Fremdkörper die Einzugsrollen (30, 32) passiert hat, wird dadurch verhindert. Gleichzeitig gewährleistet der zusammen mit der Einzugsrolle (30) verschiebbar gelagerte Einführtrichter (34), daß durch Nachuntendrücken des Einführtrichters der Abstand zwischen den Einzugsrollen (30, 32) vergrößert und damit der Einzug unterbrochen werden kann.In the embodiment of Figures 6 to 9 is the upper feed roller (32) together with the knife shaft (18) on a support frame (57) fixed in the housing (4) and is shared with the knife shaft (18) driven by the belt drive (24) by the output shaft (31) of the angular gear (27) via one on the Knife shaft (18) attached pulley to the feed roller (32) and from there returned to the output shaft via a tensioning roller (59) is. The lower feed roller located on an arm (61) (30) is there together with the insertion funnel (34) Housing (4) slidably mounted in the vertical direction, wherein a pressure spring (58) acting on the arm (61) pressing the lower feed roller (30) against the driven feed roller (32) causes. By inserting a foreign body with a die Strapping thickness of the strapping straps exceeding a predetermined amount Thickness between the two feed rollers (30, 32) the feed roller (30) is pressed down and engages in one Position in which the contact between the two feed rollers (30, 32) is canceled. Another pulling in of the strapping, after the foreign body passes the feed rollers (30, 32) is prevented. At the same time, it guarantees together insertion funnel slidably mounted with the feed roller (30) (34) that by pushing down the insertion funnel, the Distance between the feed rollers (30, 32) increased and thus the move-in can be interrupted.
Der Einführtrichter (34) wird durch zwei nach innen über die zylindrische Gehäusewand (36) überstehende jeweils von gegenüberliegenden Seitenrändern einer rechteckigen Ausnehmung (38) der Gehäusewand (36) keilförmig aufeinanderzu gerichteten Leitblechen (40, 41) gebildet, wobei der Spalt (42) zwischen den inneren Enden der Leitbleche (40, 41) so eng bemessen ist, daß die Umreifungsbänder nur so eingeführt werden können, daß die Einzugsrollen (30, 32) mit deren Breitseitenflächen in Eingriff treten. Um ein gleichzeitiges Einführen mehrerer Umreifungsbänder zu ermöglichen, weist der in den Figuren 12 und 13 dargestellte Einführtrichter (34) mehrere senkrecht zum Spalt (42) angeordnete Unterteilungen (47) auf, die verhindern, daß sich zwei schräg eingeführte Umreifungsbänder zwischen den Einzugsrollen (30, 32) überlagern, wodurch der Einzug wie bei Passieren eines Fremdkörpers unterbrochen werden könnte.The insertion funnel (34) is inserted into the cylindrical one by two Housing wall (36) each protruding from opposite Side edges of a rectangular recess (38) in the housing wall (36) wedge-shaped baffles (40, 41), the gap (42) between the inner ends of the Baffles (40, 41) is dimensioned so narrow that the strapping can only be inserted so that the feed rollers (30, 32) engage with their broad side surfaces. To a simultaneous Allows insertion of multiple straps the insertion funnel (34) shown in FIGS. 12 and 13 a plurality of subdivisions (47) arranged perpendicular to the gap (42) to prevent two diagonally inserted straps overlay between the feed rollers (30, 32), whereby the Infeed should be interrupted as if a foreign body was passing through it could.
Zwischen den Einzugsrollen (30,32) und der Bahn der Schneidmesser (18) ist eine Führung (43) angeordnet, die einen schmalen Schlitz (45) aufweist, in welchem das innere, von den Einzugsrollen (30, 32) freigegebene Ende des jeweils eingezogenen Umreifungsbands geführt wird, bis es in geringem radialen Abstand von der Kreisbahn der Schneidmesser (18) aus dem Schlitz (45) austritt. Der Schlitz (45) ist dabei sowohl nach den Seiten, als auch nach oben und unten durch Führungsflächen begrenzt, wodurch verhindert wird, daß sich das eingezogene Umreifungsband beim Auftreffen des Schneidmessers (18) umbiegt und ausweicht oder sich aus der Bahn der Schneidkanten heraus bewegt. Die jeweils in Drehrichtung der Messerwelle (14) angeordnete Begrenzung des Schlitzes (45) dient zudem als Widerlager für das Umreifungsband im Augenblick des Auftreffens des Schneidmessers (18).Between the feed rollers (30,32) and the cutting knife path (18) a guide (43) is arranged, which has a narrow slot (45), in which the inner one of the feed rollers (30, 32) released end of the strapped tape until it is a little radial distance from the circular path the cutting knife (18) emerges from the slot (45). The slot (45) is both to the side, as well as up and down limited by guide surfaces, which prevents the strapping that is drawn in when the cutting knife strikes (18) bends and dodges or gets out of the way of the Cutting edges moved out. Each in the direction of rotation of the knife shaft (14) arranged limitation of the slot (45) also serves as an abutment for the strapping at the moment of impact the cutting knife (18).
Das Gehäuse (4) kann so ausgebildet sein, daß sich sein Oberteil (48) um ein dem Einführtrichter (34) gegenüberliegendes und etwas unterhalb desselben angeordnetes Scharnier (nicht dargestellt) gegenüber dem mit dem Ständer (2) fest verbundenen Unterteil (50) um eine horizontale Schwenkachse nach oben zu aufklappen läßt. Ein nicht dargestellter Kontaktschalter verhindert, daß der Antriebsmotor (10) bei offenem Gehäuse (4) eingeschaltet werden kann. Bei aufgeklapptem Oberteil (48) ist sowohl die Schneidvorrichtung (6) als auch die Einzugsvorrichtung (8) von unten her leicht zugänglich, so daß die Schneidmesser (18) ohne Schwierigkeiten verstellt oder ausgetauscht bzw. problemlos Wartungsarbeiten an den Einzugsrollen (30, 32), den Riementrieben (18, 28) und den Lagern durchgeführt werden können.The housing (4) can be designed so that its upper part (48) around and opposite the insertion funnel (34) hinge (not shown) arranged below it the lower part (50) which is firmly connected to the stand (2) to open a horizontal swivel axis upwards. A Contact switch, not shown, prevents the drive motor (10) can be switched on with the housing (4) open. At unfolded upper part (48) is both the cutting device (6) and the feed device (8) are easily accessible from below, so that the cutting knife (18) can be adjusted without difficulty or exchanged or maintenance work on the feed rollers without any problems (30, 32), the belt drives (18, 28) and the bearings can be carried out.
Bei dem in den Figuren 1 bis 5 dargestellten Ausführungsbeispiel ist die zylindrische Gehäusewand einteilig ausgebildet und weist eine nach oben offene Schlitzausnehmung (70) auf, in welche beim Aufsetzen des Gehäusedeckels (5) der Einführtrichter (34) eingreift. Auch hier kann ein Kontaktschalter vorgesehen sein, der ein Einschalten des Antriebsmotors (10) bei offenem Gehäuse (4) verhindert.In the embodiment shown in Figures 1 to 5 the cylindrical housing wall is formed in one piece and has an upwardly open slot recess (70) into which Put on the housing cover (5) of the insertion funnel (34). A contact switch can also be provided here switching on the drive motor (10) with the housing (4) open prevented.
Unterhalb der Bahn der Schneidmesser (18) ist bei diesem Ausführungsbeispiel weiter ein Greifschutz (72) angeordnet, der mit der Gehäusewand verschweißt ist. Der Greifschutz (72) weist die Gestalt eines Kegels mit nach oben gerichteter Spitze auf und ist an seinem Umfang durch Schlitzausnehmungen (74) von der Gehäusewand (23) getrennt, so daß die kleingeschnittenen Umreifungsbandstücke am Kegel herabgleiten und nach unten in den Sammelbehälter (12) fallen können. Der Greifschutz (72) soll dabei bei einer unsachgemäßen Handhabung ein Eingreifen von unten her in die Bahn der Schneidmesser (18) verhindern.Below the path of the cutting knife (18) is in this embodiment further a gripping protection (72) arranged with the Housing wall is welded. The grip guard (72) has the shape of a cone with the tip pointing upwards and is on its circumference through slot recesses (74) from the housing wall (23) separated so that the small-sized strapping pieces slide down the cone and down into the collection container (12) can fall. The gripping protection (72) should be in the event of an improper Handling an intervention into the web from below Prevent cutting knife (18).
Bei dem in Figur 6 dargestellten Ausführungsbeispiel ist ebenfalls ein Greifschutz (72) vorgesehen, der unterhalb und auf der den Einzugsrollen (30, 32) entgegengesetzten Seite der Messerwelle (14) angeordnet ist und im unteren Teil seiner Rückwand eine Austragsöffnung (73) für die kleingeschnittenen Umreifungsbandstücke aufweist.In the embodiment shown in Figure 6 is also a gripping protection (72) is provided below and on the Feed rollers (30, 32) opposite side of the knife shaft (14) is arranged and a discharge opening in the lower part of its rear wall (73) for the small pieces of strapping having.
Der zum Auffangen der kleingeschnittenen Umreifungsbandstücke dienende Kunststoffsack (12) wird zum Befestigen mit seinem oberen Rand von unten her über die Außenfläche des Gehäuses (4) gestülpt und anschließend mittels eines unter Festklemmen des Randes gegen die Außenfläche des Gehäuses (4) anlegbaren Spannbügels (52) oder eines unter Zugspannung stehenden gummielastischen Spannseils lösbar befestigt.The one used to catch the small pieces of strapping Plastic bag (12) is used to attach with its top Edge from below over the outer surface of the housing (4) and then using a clamp against the edge the outer surface of the housing (4) attachable clamp (52) or of a tensioned elastic rubber tension rope releasable attached.
Claims (14)
- A method of cutting up used-up hooping bands of plastic material which are fed substantially in a radial direction to a cylindrical path of at least one rotating cutting blade (18) and cut into short pieces and advanced between two draw-in rollers (30, 32) which are arranged in front of the path of the cutting blade (18) and which can be pressed towards each other and of which at least one is motor-driven, characterised in that the draw-in of the hooping bands is interrupted when a predetermined spacing between the draw-in rollers (30, 32) is exceeded.
- A method according to claim 1 characterised in that the hooping bands are severed inclinedly relative to their longitudinal direction.
- A method according to claim 1 or claim 2 characterised in that the hooping bands are fed to the cylindrical path of the cutting blade (18) at a uniform speed.
- Apparatus for cutting up used-up hooping bands comprising at least one cutting blade (18) which rotates on a cylindrical path and to which the hooping bands are fed substantially in the radial direction between two draw-in rollers (30, 32) which are arranged in front of the path of the cutting blade (18) and which can be pressed against each other and of which at least one is motor-driven, characterised in that there is provided a safety device which automatically interrupts a further feed of hooping bands to the cutting blade (18) and which is switched on when a predetermined spacing between the draw-in rollers (30, 32) is exceeded.
- Apparatus according to claim 4 characterised by at least one stationary stator blade (17) which is arranged outside the path of the rotating cutting blade (18) and which has a blade edge (15) arranged at a small radial spacing from the cutting edge (20) of the cutting blade (18).
- Apparatus according to claim 5 characterised in that the blade edge (15) and the cutting edge (20) are inclined relative to each other.
- Apparatus according to claim 6 characterised in that the angle of inclination between the cutting edge (20) and the blade edge (15) is between 1 and 10 degrees, preferably about 5 degrees.
- Apparatus according to one of claims 6 and 7 characterised in that the angle of inclination is adjustable.
- Apparatus according to one of claims 4 to 8 characterised by a gripping-prevention protection means (72) disposed between a collecting container (12) and the path of the cutting blade (18).
- Apparatus according to one of claims 4 to 9 characterised in that one of the draw-in rollers (30) can be automatically arrested in its position when a predetermined spacing is exceeded.
- Apparatus according to claim 10 characterised in that the arresting means is manually releasable.
- Apparatus according to one of claims 4 to 11 characterised in that motor-driven draw-in of the hooping bands can be interrupted by applying a pushing or pulling force to an introduction hopper (34).
- Apparatus according to one of claims 4 to 12 characterised by an introduction hopper (34) for the hooping bands, the hopper being mounted pivotably or displaceably together with a draw-in roller (30).
- Apparatus according to claim 12 or claim 13 characterised in that the spacing between two draw-in rollers (30, 32) is increased when a pulling force is applied to the introduction hopper (34).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4307985A DE4307985A1 (en) | 1993-03-13 | 1993-03-13 | Method and device for disposing of used plastic strapping |
DE4307985 | 1993-03-13 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0615785A2 EP0615785A2 (en) | 1994-09-21 |
EP0615785A3 EP0615785A3 (en) | 1994-11-17 |
EP0615785B1 true EP0615785B1 (en) | 1999-12-08 |
Family
ID=6482689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94103341A Expired - Lifetime EP0615785B1 (en) | 1993-03-13 | 1994-03-05 | Process and device for the disposal of discarded plastic packaging straps |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0615785B1 (en) |
AT (1) | ATE187359T1 (en) |
DE (2) | DE4307985A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0674982B1 (en) * | 1994-03-30 | 1999-06-30 | Rieter Automatik GmbH | Granulator device for filamentary material |
DE4411165C1 (en) * | 1994-03-30 | 1994-12-15 | Rieter Automatik Gmbh | Granulating apparatus for extruded materials |
ITRO20090004A1 (en) * | 2009-07-01 | 2011-01-02 | Gianfranco Stefani | SIZE - STRAP MACHINE SUITABLE FOR BEING PUT IN NEAR OF PACKAGING AREAS WHERE THERE ARE THROWING MACHINES OR LOGISTICS WAREHOUSES. THE PURPOSE OF THE MACHINE IS TO SMOOTH THE STRAP AND MAKE IT FALL INTO A SACC |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2621835A1 (en) * | 1987-10-19 | 1989-04-21 | Stockman Mecanique Generale | Grinder for plastic binding tape and similar products |
DD289939A5 (en) * | 1989-12-11 | 1991-05-16 | Dkk Scharfenstein,De | GRANULATOR FOR PLASTBAND |
DE9115134U1 (en) * | 1991-12-05 | 1992-02-06 | Böcker, Heinrich-Georg, Dipl.-Ing., 4712 Werne | Device for shredding band-shaped material, in particular plastic bands |
DE9311356U1 (en) * | 1993-07-30 | 1993-10-14 | Klopfer, Siegfried, 86695 Allmannshofen | Device for shredding packaging tapes |
-
1993
- 1993-03-13 DE DE4307985A patent/DE4307985A1/en not_active Withdrawn
-
1994
- 1994-03-05 AT AT94103341T patent/ATE187359T1/en not_active IP Right Cessation
- 1994-03-05 EP EP94103341A patent/EP0615785B1/en not_active Expired - Lifetime
- 1994-03-05 DE DE59408974T patent/DE59408974D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4307985A1 (en) | 1994-09-15 |
DE59408974D1 (en) | 2000-01-13 |
ATE187359T1 (en) | 1999-12-15 |
EP0615785A2 (en) | 1994-09-21 |
EP0615785A3 (en) | 1994-11-17 |
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