EP0732179B1 - Method and apparatus for cutting belts with reinforcing layers - Google Patents

Method and apparatus for cutting belts with reinforcing layers Download PDF

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Publication number
EP0732179B1
EP0732179B1 EP96102886A EP96102886A EP0732179B1 EP 0732179 B1 EP0732179 B1 EP 0732179B1 EP 96102886 A EP96102886 A EP 96102886A EP 96102886 A EP96102886 A EP 96102886A EP 0732179 B1 EP0732179 B1 EP 0732179B1
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EP
European Patent Office
Prior art keywords
cutting
belt
blade
carriage
cutting device
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Expired - Lifetime
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EP96102886A
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German (de)
French (fr)
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EP0732179A1 (en
Inventor
Etienne Ehkirch
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Wagener Schwelm GmbH and Co
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Wagener Schwelm GmbH and Co
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Publication of EP0732179A1 publication Critical patent/EP0732179A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting 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
    • B26D1/01Cutting 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
    • B26D1/04Cutting 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 linearly-movable cutting member
    • B26D1/045Cutting 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 linearly-movable cutting member for thin material, e.g. for sheets, strips or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08Means for treating work or cutting member to facilitate cutting
    • B26D7/084Means for treating work or cutting member to facilitate cutting specially adapted for cutting articles composed of at least two different materials, e.g. using cutters of different shapes

Definitions

  • the invention relates to a method for cutting with reinforcing inserts provided belts, in particular for cutting conveyor belts made of a reinforced elastomer, in which the band is between two clamping jaws is arranged, and the jaws to perform the cut are pressed against each other with the band in between, and at the same time a knife by means of a drive along the jaws and passed transversely to the longitudinal direction of the tape through the tape material becomes.
  • the invention further relates to a cutting device for Implementation of this method, suitable for conveyor belts from one reinforced with steel Elastomer, with a clamping device made of two arranged transversely to the band and clamping jaws which can be pressed against one another with the interposition of the band, and with one using a drive along the clamp movable knife with at least one cutting edge.
  • a method and a cutting device of the type mentioned are described in the French utility model certificate 2458497.
  • a elastic band which is a fabric with rubber coated Can act through a variety of transverse cuts in individual strips separated, the strips later for the production of Carcass of a tire can be used.
  • the used as raw material For this purpose, the belt is clamped between two clamping jaws that can be pressed against each other and there is then a horizontally movable knife through the Tape material passed through.
  • the belt material lies on a conveyor belt on rubber. To avoid the conveyor belt cut by the knife is located at the bottom of the with two sickle-shaped knives with a rounded one Widening in the manner of a bead.
  • the knife is rigid on one exactly along the top Clamp jaw guided cart attached.
  • the cutting height of the knife is adjusted so that the edge of the tape to be cut during the Cut on the top of the bead and thus in the transition between Bead and sickle-shaped knife edge slides along.
  • the known cutting device can be used to cut tissues and in particular also use rubber-coated fabrics.
  • Conveyor belts and in particular conveyor belts reinforced with steel wires to cut e.g. to transport coal and overburden in Surface and underground construction can be used.
  • the invention has for its object to provide a cutting method with which all types of tapes provided with reinforcing inserts and in particular also tapes provided with steel reinforcements can be severed quickly and with a long service life of the cutting tool used.
  • a cutting device suitable for this purpose is also to be created.
  • the strip material be gripped on both sides by cutting edges of the knife during the cut, which form an acute angle between them and are each straight or convexly curved towards the strip.
  • the knife is preferably passed through the band material with a clear vertical play, the knife automatically centering with respect to the reinforcement insert enclosed in the band.
  • a cutting device of the type mentioned at the outset in which the cutting edge is shaped straight or curved convexly towards the strip, a further cutting edge is arranged at an acute angle to the cutting edge, and the strip is between the two cutting edges during the cut located.
  • both cutting edges are located the cutting device on the knife.
  • the two cutting edges be designed symmetrically to each other, whereby they together the in form about a V-shaped cutting notch.
  • This shape of the cutting notch leads to that the knife automatically with respect to that enclosed in the tape Reinforced insert centered.
  • the highest cutting force is concentrated therefore precisely where the highest material resistance has to be overcome in the area of the reinforcement to be cut.
  • the knife can go in the direction perpendicular to the flat sides of the tape have a clear play, whereas the knife is in the longitudinal direction of the belt should behave essentially rigidly.
  • the knife along one the clamping device reciprocating carriage is arranged.
  • the knife may be rigidly attached to the cart, in which case the cart with clear vertical play on one of the two jaws of the clamping device is led.
  • the jaw can be used to prevent the knife from moving sideways be provided with a longitudinal slot through which the knife passes is. In this case the lateral guidance of the knife can be done entirely or partially through the longitudinal slot.
  • the implementation of the The cutting method used a fixed substructure 1, on the outer ends of two trestles 2 are arranged. Opposite each other are two horizontal U-profiles 8 arranged, as shown in Fig. 4, one Form the upper jaw 10 forming a cavity, the two profiles of this jaw 10 are firmly connected by bracket 9.
  • a movable frame 1 ' is mounted so that it is vertical on the base 1 can slide.
  • the movable frame contains a pair of horizontal U-profiles 3, which are arranged opposite each other, and in this way a lower one form troughed jaw 13.
  • Two pairs of vertical supports 4 are close to the Ends of this lower jaw 13 arranged, and by a front Traverse 5 connected.
  • two horizontal longitudinal beams 6 are provided, between which a plurality of rollers 7 arranged parallel to one another are mounted are in this way a horizontal wing for the to be cut Band to form.
  • the vertical supports 4 are in pairs connected by a strut 4 '.
  • Each strut 4 ' is doubled by one acting cylinder 12, the shaft with one of the bracket 9th is connected, which is attached to the upper jaws 10 and itself located between the carriers 4.
  • the cylinders 12 are hydraulic or pneumatically operated. You can work synchronously to the lower one movable jaw 13 to raise or lower, so that the upper fixed jaw 10 remains parallel.
  • Offset guide elements 15 are between the fixed profiles 8 and the vertically movable beams 4th intended. These elements can have guides on the Drawing are not shown.
  • the upper flanges 14 of the profiles 3 form the clamping surfaces of the lower ones Jaw 13 and are almost at the same level the surface of the Rollers 7. As FIG. 5 shows, the flanges 14 are separated by a slot 16, through which a knife 17 can slide.
  • the lower flanges 18 of the Profiles 8 form the clamping surface of the upper jaw 10 and are also separated by a slot 19, which allows the passage of the knife 17.
  • the two profiles 8, which form the upper fixed jaw 10, contain the Cutting means consisting of a carriage with the knife 17 and a Drive 21 by means of a chain which runs over two sprockets 22, 23 which are mounted at the ends of the profiles 8.
  • the sprocket 22 is through one electric gear motor 24 driven.
  • the other sprocket 23 is on a chain tensioner 25 is mounted, in the vicinity of which each profile 8 a has lateral opening 26, which the assembly and disassembly of the knife 17 relieved on the carriage 20.
  • a removable housing 27, above the lower jaw 13 arranged, protects the knife 17 in this Zone.
  • Another housing 28 protects the one used to drive the carriage 20 Chain.
  • the carriage 20 is shown, which essentially consists of there are two side plates 30, between which the knife 17 is located.
  • the ends of the chain are attached to the ends of the two plates 30.
  • each ball bearing 33 serving as rollers, the carriage is inside the Profile 8 led.
  • the outer diameter of each ball bearing is smaller than the clear height inside the profile 8 to a vertical play 34 of Obtain carriage 20 and knife 17 and self-centering of the knife 17 to allow on the tape to be cut, as will be described later becomes.
  • the plates 30 and the knife 17 are horizontal Connected screws that pass through holes.
  • each end of the knife 17 has a cutting notch is provided, which has approximately V-shape in the longitudinal profile, which two has just opposite parties 36 and 37, of which one to the other is symmetrical with respect to the horizontal center line 38.
  • Each V-shaped cutting edge ends in a central concave section 39.
  • the knife 17 is preferably made of high-speed steel, which means a laser is cut out.
  • the treatment of the cutting notch and the Cutting angle depends on the product to be cut. Generally is the sharpening is low in order not to make the cutting notch too sensitive. This construction makes it possible to produce a relatively thin knife 17 which Cut rubber or metal reinforcements and other material can, which is embedded in the rubber.
  • the symmetrical arrangement of the two cutting sections 36 and 37 of the knife creates one Self-centering of the knife 17 with respect to the element to be cut, which is held between the two jaws 10.13. in the in the present case it is the vertical play of the carriage 20 in the upper one Clamping jaw 10, which allows self-centering.
  • the game can also be achieved by moving the knife 17 on the carriage 20 is mounted. During the cut, the knife 17 becomes transverse to the belt and through the slots 16 and 19 which are between the two upper and lower jaws 10.13.
  • the knife 17 has two pairs of cutting sections 36, 37 allows if necessary, cuts alternately in one and then in the other Direction. But even in cases where an alternate cut is not This knife type may be of interest because it is intended If one cutting notch suffices, the working direction reverse and switch to the other notch.
  • FIGs 7 and 8 represent a variant compared to Figures 1 to 6 the knife guide to cut especially thick strips that are very strong steel cables are reinforced.
  • the knife 50 is the essential element a carriage 51, the upper jaw 10 having an axis 52 with two contains ball-bearing plain bearings 53. One sits in the lower jaw 13 Axis 54 with two ball-bearing plain bearings 55.
  • the knife 50 has one straight shaped cutting edge 50 'which runs obliquely in the cutting direction. It is preferably made of high-speed steel.
  • the flanges 14 of the lower one Clamping jaws 13 can be provided with fixed blades 56, which are also are made of cutting steel.
  • the blade 56 consists of two cutting edges 56 'on both sides of the slot 16 of the lower jaw 13.
  • Knife 50 As soon as that Knife 50 encounters resistance during the cut, it becomes in one Position held in which the slide bearing 53 of the carriage 51 against the upper Press the flanges of the profiles 8, with the plain bearings 55 against the back the flanges 14 of the profiles 3 are pressed. In this position she practices Cutting notch 50 'exerts a force on the strip to be cut, part of which focuses on the lower jaw 13 and tries the inner ropes of the band to be cut between the cutting edge 50 'of the knife 50 and to squeeze the cutting edges 56 'of the blades 56.
  • the knife 50 contains a notch of the type that a V-shaped cutting notch corresponding to that described above Embodiment arises.
  • control box 40 which i.a. the electrical Control unit and the power supply for the geared motor 24 contains as well as the electrohydraulic or electropneumatic units for Actuation of the cylinders 12.
  • Fig. 3 the band 41 to be cut is shown, which is e.g. around a rubber conveyor belt reinforced by wires or metal cables 42, which must be cut transversely according to a cutting line 43.
  • the belt 41 placed on the rollers 7 can be operated manually by an operator be pushed between the jaws 10 and 13 before that Cutting process begins. It is possible in this way, an old, worn one Quickly shred conveyor belt into easy-to-use pieces.
  • the jaws 10, 13 After the tape 41 is in the correct position of the desired cutting line 43 located between the jaws 10, 13 are first by actuation the cylinder 12, the jaws 10, 13 pressed against each other. Then begins the movement of the drive that begins one end of the jaws 10, 13 located knife 17. Since the two Cutting edges of the knife are arranged at an acute angle to one another, is the band 41 during the cut between these two Cutting edges, i.e. the knife 17 centers itself with respect to the Band 41. The band material is on both sides of the cutting edges of the knife 17 detected, so that a symmetrical and particularly powerful Cut is made, which also easily cuts through metal reinforcements.
  • FIGS. 9 to 12 show a further embodiment of the cutting device shown.
  • the jaws 10, 13 are at one end over a Swivel joint 60 connected.
  • the cutting device including the jaws 10, 13 open the end 61 facing away from the swivel 60 completely.
  • the piston rod 62 of the arranged there Cylinder 12 after loosening a locking bolt 63 from the lower jaw 13 separated.
  • the lower jaw 13 can be pivoted lower around hinge 60 with respect to upper jaw 10, and insert or run the tape 41 laterally.
  • This is with repair measures on endless conveyor belts that are not on the front side of the cutting device Let it slide in, a particular advantage.
  • the clamping device, on which the swivel joint 60 is also located is a fixed stop 64 which can be swiveled in between the two clamping jaws 10, 13, with which the maximum opening angle of the jaws 10, 13 limit.
  • Carrying eyelets 65 on the top of the cutting device allow this to be lifted to the desired location using a crane, and if necessary, make cuts in a raised position. Instead of Carrying eyelets 65 or, in addition, guides for the tines a forklift or another conveyor.
  • each of the two Clamping jaws 10, 13 made of two carriers arranged in parallel in the form of a Double.
  • the upper pair of supports forms the upper jaw 10, the lower one Carrier pair the lower jaw 13.
  • the distance between the carriers is so small that the remaining longitudinal slots 16, 19th just enough for the passage of the knife 17.
  • the guidance of the knife 17 takes place in this way predominantly through the edges of these longitudinal slots 16, 19. This guide is so scarce that the knife 17 in the longitudinal direction of the tape behaves essentially rigid.
  • FIG. 12 composed of an upper game 34 'and a lower game 34' '.
  • the Upper game 34 ' exists between support rollers 67 in the area of the upper long side of the carriage 20 and guide surfaces 68 of the carriage arranged there receiving jaw 10.
  • the lower game 34 "exists between the bottom 69 of the carriage 20 and the flange 18 there of the jaw 10.
  • the drive 21 in the form of the chain is close by a bolt 69 ' the bottom 69 of the carriage 20 attached to force transmission near the Knife 17 to reach.
  • the knife 17 instead of a sharpening of the knife 17 itself, it is also possible for the knife to be designed as a base body, in which suitable cutting inserts are then used e.g. Cutting inserts made of Widia steel or ceramic. In In this case, the knife cannot be dismantled after the knife becomes blunt Knife or even the carriage required. Rather, only that Cutting inserts are exchanged.
  • suitable cutting inserts e.g. Cutting inserts made of Widia steel or ceramic.
  • Appropriate bending line compensation can be provided to achieve length be, e.g. B. by a precisely determined, convex pre-bending of both Jaws 10, 13 to each other.

Description

Die Erfindung betrifft ein Verfahren zum Schneiden von mit Verstärkungseinlagen versehenen Bändern, insbesondere zum Schneiden von Förderbändern aus einem armierten Elastomer, bei dem das Band zwischen zwei Klemmbacken angeordnet wird, und zur Durchführung des Schnittes die Klemmbacken mit dem dazwischen angeordneten Band gegeneinander gepreßt werden, und zugleich ein Messer mittels eines Antriebes entlang der Klemmbacken und quer zur Bandlängsrichtung durch das Bandmaterial hindurchgeführt wird.The invention relates to a method for cutting with reinforcing inserts provided belts, in particular for cutting conveyor belts made of a reinforced elastomer, in which the band is between two clamping jaws is arranged, and the jaws to perform the cut are pressed against each other with the band in between, and at the same time a knife by means of a drive along the jaws and passed transversely to the longitudinal direction of the tape through the tape material becomes.

Die Erfindung betrifft ferner eine Schneidvorrichtung zur Durchführung dieses Verfahrens, geeignet für Förderbänder aus einem mit stahl armierten Elastomer, mit einer Klemmvorrichtung aus zwei quer zu dem Band angeordneten und unter Zwischenlage des Bandes gegeneinander preßbaren Klemmbacken, und mit einem unter Verwendung eines Antriebes entlang der Klemmvorrichtung beweglichen Messer mit mindestens einer Schneidkante.The invention further relates to a cutting device for Implementation of this method, suitable for conveyor belts from one reinforced with steel Elastomer, with a clamping device made of two arranged transversely to the band and clamping jaws which can be pressed against one another with the interposition of the band, and with one using a drive along the clamp movable knife with at least one cutting edge.

Ein Verfahren sowie eine Schneidvorrichtung der eingangs genannten Art sind in dem französischen Gebrauchsmusterzertifikat 2458497 beschrieben. Ein elastisches Band, bei dem es sich um ein Gewebe mit gummibeschichteten Fäden handeln kann, wird durch eine Vielzahl quer verlaufender Schnitte in einzelne Streifen aufgetrennt, wobei die Streifen später zur Herstellung der Karkasse eines Reifens verwendet werden. Das als Rohmaterial verwendete Band wird hierzu zwischen zwei zueinander preßbaren Klemmbacken eingespannt, und es wird sodann ein horizontal verfahrbares Messer durch das Bandmaterial hindurchgeführt. Das Bandmaterial liegt hierbei auf einem Transportband auf Gummi auf. Um zu vermeiden, daß auch das Transportband durch das Messer zerschnitten wird, befindet sich am unteren Rand des mit zwei sichelförmigen Schneiden versehenen Messers eine mit Rundungen versehene Verbreiterung nach Art eines Wulstes. Während des Schnittes drückt der Wulst das elastische Transportband partiell nach unten in eine breite Nut der unteren Klemmbacke, so daß das Transportband während des Schnittes keinen Schaden nimmt. Das Messer ist starr an einem exakt entlang der oberen Klemmbacke geführten Wagen befestigt. Die Schnitthöhe des Messers ist so eingestellt, daß die Kante des zu schneidenden Bandes während des Schnittes auf der Oberseite des Wulstes und damit im Übergang zwischen Wulst und sichelförmiger Messerschneide entlanggleitet.A method and a cutting device of the type mentioned are described in the French utility model certificate 2458497. A elastic band, which is a fabric with rubber coated Can act through a variety of transverse cuts in individual strips separated, the strips later for the production of Carcass of a tire can be used. The used as raw material For this purpose, the belt is clamped between two clamping jaws that can be pressed against each other and there is then a horizontally movable knife through the Tape material passed through. The belt material lies on a conveyor belt on rubber. To avoid the conveyor belt cut by the knife is located at the bottom of the with two sickle-shaped knives with a rounded one Widening in the manner of a bead. Presses during the cut the bead of the elastic conveyor belt partially down into a wide groove the lower jaw so that the conveyor belt during the cut takes no damage. The knife is rigid on one exactly along the top Clamp jaw guided cart attached. The cutting height of the knife is adjusted so that the edge of the tape to be cut during the Cut on the top of the bead and thus in the transition between Bead and sickle-shaped knife edge slides along.

Die bekannte Schneidvorrichtung läßt sich zum Durchtrennen von Geweben und insbesondere auch gummibeschichteten Geweben verwenden. Hingegen hat sie sich als ungeeignet herausgestellt, um für hohe Beanspruchungen ausgelegte Förderbänder und insbesondere mit Stahldrähten armierte Förderbänder zu durchtrennen, wie sie z.B. zum Transport von Kohle und Abraum im Über- und Untertagebau eingesetzt werden.The known cutting device can be used to cut tissues and in particular also use rubber-coated fabrics. On the other hand it has proven unsuitable to be designed for high loads Conveyor belts and in particular conveyor belts reinforced with steel wires to cut, e.g. to transport coal and overburden in Surface and underground construction can be used.

Förderbänder, die durch Stahlseile oder Drahtgeflechte verstärkt sind, werden derzeit noch weitgehend von Hand durchtrennt, da geeignete Maschinen und maschinelle Verfahren nicht verfügbar sind. In der Regel wird hierzu zunächst das die Armierung umschließende Elastomer von beiden Seiten her in Form eines möglichst tiefen Keiles aufgeschnitten. Anschließend wird mit Hilfe eines von Hand geführten, handelsüblichen Trennschleifers jeder einzelne Stahldraht aufgetrennt. Gerade diese Arbeit, zu deren Durchführung mindestens drei Personen erforderlich sind, ist äußerst mühselig und mit beträchtlichem Lärm sowie einer hohen Staubentwicklung verbunden. Während des Arbeitens mit dem Trennschleifer läßt es sich zudem nicht verhindern, daß auch das Gummimaterial von der Trennscheibe erfaßt wird, wodurch diese Arbeit zusätzlich mit der Entwicklung von Dämpfen sowie einer unangenehmen Geruchsbelästigung verbunden ist. Ein auf diese herkömmliche Weise durchgeführter Schnitt dauert bei einem stahlarmierten Förderband von 2 m Breite zwischen einer halben Stunde und einer Stunde. Ein solcher Zeitraum ist allenfalls zu akzeptieren, wenn es um die einmalige Durchtrennung des Bandes geht, etwa zu Reparaturzwecken. Sie ist hingegen indiskutabel, wenn es darum geht, ein insgesamt verschlissenes Förderband zum Zwecke von dessen Entsorgung in einzelne kurze Abschnitte zu zerschneiden, wie es in Zukunft wegen der zunehmend strengeren Umweltgesetze erforderlich sein wird. DE-C-819 802 offenbart ein anderes Verfahren, und die entsprechende Vorrichtung, zum Durchtrennen von mit Verstärkungseinlagen versehenen Bändern von Hand.Conveyor belts that are reinforced by steel cables or wire mesh currently still largely severed by hand as suitable machines and mechanical processes are not available. Usually this is done first the elastomer enclosing the reinforcement from both sides in the form of a Cut the wedge as deep as possible. Then using a hand-held, commercially available cut-off machine, every single steel wire separated. This work, at least three, to be carried out People are required is extremely cumbersome and with considerable noise and a high level of dust. While working with the grinder can also not prevent that Rubber material is gripped by the cutting disc, causing this work additionally with the development of vapors as well as an unpleasant one Odor nuisance is connected. One in this conventional way The cut is carried out on a steel-reinforced conveyor belt of 2 m Width between half an hour and an hour. Such a period is at most to be accepted when it comes to cutting the tape once goes, for example for repair purposes. However, it is out of the question if it is is about an overall worn out conveyor belt for the purpose of to cut its disposal into short sections as described in Future may be required because of increasingly stringent environmental laws becomes. DE-C-819 802 discloses another method and the Corresponding device for cutting through with reinforcing inserts tapes by hand.

Der Erfindung liegt die Aufgabe zugrunde, ein Schneidverfahren zu schaffen, mit dem sich alle Arten von mit Verstärkungseinlagen versehenen Bändern und insbesondere auch mit Stahlarmierungen versehene Bänder schnell und mit langer Standzeit des verwendeten Schneidwerkzeuges durchtrennen lassen. Ferner soll eine hierzu geeignete Schneidvorrichtung geschaffen werden.The invention has for its object to provide a cutting method with which all types of tapes provided with reinforcing inserts and in particular also tapes provided with steel reinforcements can be severed quickly and with a long service life of the cutting tool used. A cutting device suitable for this purpose is also to be created.

Zur Lösung wird hinsichtlich des Verfahrens vorgeschlagen, daß das Bandmaterial während des Schnittes beidseitig von Schneidkanten des Messers erfaßt wird, die zwischen sich einen spitzen Winkel bilden und jeweils gerade oder zu dem Band hin konvex gebogen geformt sind. Vorzugsweise wird das Messer mit deutlichem senkrechten Spiel durch das Bandmaterial hindurchgeführt, wobei sich das Messer selbsttätig in bezug auf die in dem Band eingeschlossene Verstärkungseinlage zentriert.As a solution to the method, it is proposed that the strip material be gripped on both sides by cutting edges of the knife during the cut, which form an acute angle between them and are each straight or convexly curved towards the strip. The knife is preferably passed through the band material with a clear vertical play, the knife automatically centering with respect to the reinforcement insert enclosed in the band.

Zur Lösung wird ferner eine Schneidvorrichtung der eingangs genannten Art vorgeschlagen, bei der die Schneidkante gerade oder zu dem Band hin konvex gebogen geformt ist, in spitzem Winkel zu der Schneidkante eine weitere Schneidkante angeordnet ist, und sich das Band während des Schnittes zwischen den beiden Schneidkanten befindet.To solve the problem , a cutting device of the type mentioned at the outset is also proposed, in which the cutting edge is shaped straight or curved convexly towards the strip, a further cutting edge is arranged at an acute angle to the cutting edge, and the strip is between the two cutting edges during the cut located.

Infolge der im wesentlichen V-förmigen Anordnung der beiden zusammenwirkenden Schneidkanten ist es möglich, selbst mit Stahlarmierungen versehene Bänder ungewöhnlich schnell und mit langer Standzeit der Messerschneiden zu durchtrennen. Das Durchtrennen eines etwa 2 m breiten Gummibandes mit Stahlseilarmierung ist in weniger als 2 Minuten durchführbar und erfolgt ohne Staubentwicklung und bei geringer Geräuschentwicklung. Während der Durchführung des Verfahrens ist allenfalls eine Aufsichtsperson erforderlich. As a result of the substantially V-shaped arrangement of the two interacting Cutting edges are possible, even with steel reinforcements Bands unusually fast and with a long service life of the knife edges to sever. Cutting an approximately 2 m wide rubber band with Steel cable reinforcement can be carried out in less than 2 minutes and is done without Development of dust and low noise. During the At most, a supervisor is required to carry out the procedure.

Gemäß einer bevorzugten Ausgestaltung befinden sich beide Schneidkanten der Schneidvorrichtung an dem Messer. Hierbei können die beiden Schneidkanten symmetrisch zueinander gestaltet sein, wobei sie gemeinsam die in etwa V-förmige Schneidkerbe bilden. Diese Gestalt der Schneidkerbe führt dazu, daß sich das Messer selbsttätig in bezug auf die in dem Band eingeschlossene Verstärkungseinlage zentriert. Die höchste Schneidkraft konzentriert sich daher gerade dort, wo der höchste Materialwiderstand zu überwinden ist, also im Bereich der zu durchtrennenden Armierung.According to a preferred embodiment, both cutting edges are located the cutting device on the knife. Here, the two cutting edges be designed symmetrically to each other, whereby they together the in form about a V-shaped cutting notch. This shape of the cutting notch leads to that the knife automatically with respect to that enclosed in the tape Reinforced insert centered. The highest cutting force is concentrated therefore precisely where the highest material resistance has to be overcome in the area of the reinforcement to be cut.

Um es dem Messer zu ermöglichen, sich bezüglich der Armierung zu zentrieren, kann das Messer in Richtung senkrecht zu den Flachseiten des Bandes ein deutliches Spiel aufweisen, wohingegen sich das Messer in Bandlängsrichtung im wesentlichen starr verhalten sollte.To allow the knife to center itself on the armouring, the knife can go in the direction perpendicular to the flat sides of the tape have a clear play, whereas the knife is in the longitudinal direction of the belt should behave essentially rigidly.

Mit der Erfindung wird ferner vorgeschlagen, daß das Messer an einem entlang der Klemmvorrichtung hin- und her beweglichen Wagen angeordnet ist. Um dem Messer hierbei den gewünschten Spielausgleich zu ermöglichen, kann das Messer starr an dem Wagen befestigt sein, in welchem Fall der Wagen mit deutlichem senkrechten Spiel an einer der beiden Klemmbacken der Klemmvorrichtung geführt ist.With the invention it is further proposed that the knife along one the clamping device reciprocating carriage is arranged. To enable the knife to achieve the desired play compensation, the knife may be rigidly attached to the cart, in which case the cart with clear vertical play on one of the two jaws of the clamping device is led.

Es hat sich ferner als vorteilhaft herausgestellt, wenn die Zugkräfte zur Bewegung des Wagens möglichst nahe an den Messerschneiden wirken. Hierzu wird mit einer Ausgestaltung der Erfindung vorgeschlagen, daß der Wagen an seiner dem Messer abgewandten Längsseite mit Stützrollen versehen ist, die an Führungsflächen der den Wagen aufnehmenden Klemmbacke ablaufen können, und daß zur Bewegung des Wagens Zugmittel vorgesehen sind, die in Höhe der dem Messer zugewandten Hälfte des Wagens an dem Wagen befestigt sind.It has also proven to be advantageous if the tensile forces for movement of the carriage as close as possible to the knife edges. For this is proposed with an embodiment of the invention that the car its long side facing away from the knife is provided with support rollers which run on guide surfaces of the clamping jaw receiving the carriage can, and that for the movement of the car traction means are provided, which in Height of the half of the carriage facing the knife attached to the carriage are.

Um ein seitliches Ausweichen des Messers zu verhindern, kann die Klemmbacke mit einem Längsschlitz versehen sein, durch den das Messer hindurchgeführt ist. In diesem Fall kann die seitliche Führung des Messers ganz oder teilweise durch den Längsschlitz erfolgen. The jaw can be used to prevent the knife from moving sideways be provided with a longitudinal slot through which the knife passes is. In this case the lateral guidance of the knife can be done entirely or partially through the longitudinal slot.

Für den praktischen Einsatz der Schneidvorrichtung in Transportanlagen hat es sich als vorteilhaft herausgestellt, wenn die Klemmbacken mittels eines Drehgelenks zueinander verschwenkbar sind, und sich die Schneidvorrichtung einschließlich der Klemmbacken an ihrem dem Drehgelenk abgewandten Ende vollständig öffnen läßt, um so das Band von der Seite her zwischen die geöffneten Klemmbacken einschieben zu können. Auf diese Weise ist es möglich, ohne ein Demontage der gesamten Schneidvorrichtung Schnitte an Ort und Stelle durchzuführen, z.B. an einem reparaturbedürftigen Förderband innerhalb eines Bandgerüstes. Zum leichteren Transport der Schneidvorrichtung kann diese an ihrer Oberseite mit Tragösen versehen sein, so daß sich die Schneidvorrichtung als Ganzes von einem Portalkran oder einem anderen Fördergerät anheben und an den gewünschten Einsatzort transportieren oder in ein Bandgerüst einschwenken läßt.It has for the practical use of the cutting device in transport systems turned out to be advantageous if the jaws by means of a Swivel joint are pivotable to each other, and the cutting device including the jaws at their end facing away from the swivel can be opened completely, so that the tape is from the side between the to be able to insert open jaws. That way it is possible without having to dismantle the entire cutting device Place, e.g. on a conveyor belt in need of repair within a band structure. For easier transport of the cutting device can this be provided on its top with eyelets, so that the cutting device as a whole from a gantry crane or another Raise the conveyor and transport it to the desired location or can be swung into a belt structure.

Weitere Eigenschaften und Vorteile werden nachfolgend anhand von Ausführungsbeispielen und unter Bezugnahme auf die beigefügten Zeichnungen erläutert. In den Zeichnungen zeigen:

Fig. 1
in Frontansicht eine schematische Darstellung einer Schneidvorrichtung zum Durchtrennen eines durch Stahlseile armierten Elastomers;
Fig. 2
eine Draufsicht auf die Vorrichtung gemäß Fig. 1;
Fig. 3
eine perspektivische Darstellung der Vorrichtungen gemäß den Figuren 1 und 2, wobei ein Teil zur besseren Deutlichkeit als Ausbruch dargestellt ist;
Fig. 4
in einer Detaildarstellung einen Querschnitt in der Ebene IV-IV der Fig. 1;
Fig. 5
ein Detail der Fig. 4 in nochmals vergrößertem Maßstab;
Fig. 6
in einer Schnittdarstellung in der Ebene VI-VI der Fig. 5 die Ansicht eines Wagens mit daran befestigtem Messer;
Fig. 7
eine der Fig. 5 entsprechende Darstellung bei einer zweiten Ausführungsform der Schneidvorrichtung;
Fig. 8
eine der Fig. 6 entsprechende Darstellung bei der zweiten Ausführungsform der Schneidvorrichtung;
Fig. 9
eine der Fig. 3 entsprechende Darstellung bei einer dritten Ausführungsform der Schneidvorrichtung;
Fig. 10
ein Detail der Schneidvorrichtung nach Fig. 9;
Fig. 11
einen vergrößerten Querschnitt im Bereich des Messers durch eine Schneidvorrichtung und
Fig. 12
einen Schnitt in der Ebene XII-XII der Fig. 11.
Further properties and advantages are explained below using exemplary embodiments and with reference to the accompanying drawings. The drawings show:
Fig. 1
in front view, a schematic representation of a cutting device for cutting an elastomer reinforced by steel cables;
Fig. 2
a plan view of the device of FIG. 1;
Fig. 3
a perspective view of the devices according to Figures 1 and 2, wherein a part is shown for clarity as a breakout;
Fig. 4
in a detailed representation a cross section in the plane IV-IV of Fig. 1;
Fig. 5
a detail of Figure 4 on a further enlarged scale.
Fig. 6
in a sectional view in the plane VI-VI of Figure 5, the view of a carriage with a knife attached.
Fig. 7
a representation corresponding to Figure 5 in a second embodiment of the cutting device.
Fig. 8
a representation corresponding to Figure 6 in the second embodiment of the cutting device.
Fig. 9
a representation corresponding to Figure 3 in a third embodiment of the cutting device.
Fig. 10
a detail of the cutting device of FIG. 9;
Fig. 11
an enlarged cross section in the area of the knife through a cutting device and
Fig. 12
a section in the plane XII-XII of Fig. 11th

Unter Bezug auf die Figuren 1 bis 4 umfaßt die zur Durchführung des Schneidverfahrens verwendete Vorrichtung einen festen Unterbau 1, an dessen äußeren Enden zwei Stützböcke 2 angeordnet sind. Einander gegenüberliegend sind zwei horizontale U-Profile 8 angeordnet, die, wie Fig. 4 zeigt, eine obere, innen einen Hohlraum bildende Klemmbacke 10 bilden, wobei die beiden Profile dieser Klemmbacke 10 fest durch Bügel 9 verbunden sind. Ein beweglicher Rahmen 1' ist so montiert, daß er vertikal auf dem Unterbau 1 gleiten kann. Der bewegliche Rahmen enthält ein Paar horizontaler U-Profile 3, die einander gegenüber angeordnet sind, und auf diese Weise eine untere gemuldete Klemmbacke 13 bilden. Zwei Paar vertikale Träger 4 sind nahe den Enden dieser unteren Klemmbacke 13 angeordnet, und stirnseitig durch eine Traverse 5 verbunden. Ferner sind zwei horizontale Längsträger 6 vorgesehen, zwischen denen mehrere parallel zueinander angeordnete Rollen 7 montiert sind, um auf diese Weise eine horizontale Tragfläche für das zu schneidende Band zu bilden. An den oberen Enden sind die vertikalen Träger 4 paarweise durch eine Strebe 4' verbunden. Jede Strebe 4' wird durch einen doppelt wirkenden Zylinder 12 getragen, dessen Schaft mit einem der Bügel 9 verbunden ist, der an den oberen Klemmbacken 10 angebaut ist und sich zwischen den Trägern 4 befindet. Die Zylinder 12 sind hydraulisch oder pneumatisch betätigt. Sie können synchron arbeiten, um die untere bewegliche Klemmbacke 13 anzuheben oder abzulassen, damit diese zur oberen festen Klemmbacke 10 parallel bleibt. Versetzte Führungselemente 15 sind zwischen den festen Profilen 8 und den vertikal beweglichen Trägern 4 vorgesehen. Diese Elemente können Führungen aufweisen, die auf der Zeichnung nicht dargestellt sind.With reference to Figures 1 to 4, the implementation of the The cutting method used a fixed substructure 1, on the outer ends of two trestles 2 are arranged. Opposite each other are two horizontal U-profiles 8 arranged, as shown in Fig. 4, one Form the upper jaw 10 forming a cavity, the two profiles of this jaw 10 are firmly connected by bracket 9. A movable frame 1 'is mounted so that it is vertical on the base 1 can slide. The movable frame contains a pair of horizontal U-profiles 3, which are arranged opposite each other, and in this way a lower one form troughed jaw 13. Two pairs of vertical supports 4 are close to the Ends of this lower jaw 13 arranged, and by a front Traverse 5 connected. Furthermore, two horizontal longitudinal beams 6 are provided, between which a plurality of rollers 7 arranged parallel to one another are mounted are in this way a horizontal wing for the to be cut Band to form. At the upper ends, the vertical supports 4 are in pairs connected by a strut 4 '. Each strut 4 'is doubled by one acting cylinder 12, the shaft with one of the bracket 9th is connected, which is attached to the upper jaws 10 and itself located between the carriers 4. The cylinders 12 are hydraulic or pneumatically operated. You can work synchronously to the lower one movable jaw 13 to raise or lower, so that the upper fixed jaw 10 remains parallel. Offset guide elements 15 are between the fixed profiles 8 and the vertically movable beams 4th intended. These elements can have guides on the Drawing are not shown.

Die oberen Flansche 14 der Profile 3 bilden die Klemmflächen der unteren Klemmbacke 13 und befinden sich fast auf gleicher Höhe die Oberfläche der Rollen 7. Wie die Fig. 5 zeigt, sind die Flansche 14 durch einen Schlitz 16 getrennt, durch den ein Messer 17 gleiten kann. Die unteren Flansche 18 der Profile 8 bilden die Klemmfläche der oberen Klemmbacke 10 und sind ebenfalls durch einen Schlitz 19 getrennt, der den Durchgang des Messers 17 ermöglicht.The upper flanges 14 of the profiles 3 form the clamping surfaces of the lower ones Jaw 13 and are almost at the same level the surface of the Rollers 7. As FIG. 5 shows, the flanges 14 are separated by a slot 16, through which a knife 17 can slide. The lower flanges 18 of the Profiles 8 form the clamping surface of the upper jaw 10 and are also separated by a slot 19, which allows the passage of the knife 17.

Die einander gegenüberliegenden Flansche 14 und 18 mit den daran ausgebildeten Klemmflächen sind auf der Zeichnung flach dargestellt. Sie können jedoch Erhebungen oder zusätzliche Formen in Gestalt von Krallen, Prismen etc. aufweisen, um das zu schneidende Band besser festhalten zu können, insbesondere wenn dieses Band aus einem deutlich elastischen Material besteht und ein erkennbares Verschleißbild zeigt.The opposing flanges 14 and 18 with those formed thereon Clamping surfaces are shown flat on the drawing. However, you can Elevations or additional forms in the form of claws, prisms etc. have, in order to be able to hold the tape to be cut better, in particular if this band is made of a clearly elastic material and shows a recognizable wear pattern.

Die beiden Profile 8, die die obere feste Klemmbacke 10 bilden, enthalten die Schneidmittel bestehend aus einem Wagen mit dem Messer 17 sowie einem Antrieb 21 mittels einer Kette, die über zwei Kettenräder 22, 23 läuft, welche an den Enden der Profile 8 montiert sind. Das Kettenrad 22 ist durch einen elektrischen Getriebemotor 24 angetrieben. Das andere Kettenrad 23 ist auf einer Kettenspannvorrichtung 25 montiert, in deren Nähe jedes Profil 8 eine seitliche Öffnung 26 aufweist, welche die Montage und Demontage des Messers 17 auf dem Wagen 20 erleichtert. Ein abnehmbares Gehäuse 27, oberhalb der unteren Klemmbacke 13 angeordnet, schützt das Messer 17 in dieser Zone. Ein anderes Gehäuse 28 schützt die zum Antrieb des Wagens 20 verwendete Kette.The two profiles 8, which form the upper fixed jaw 10, contain the Cutting means consisting of a carriage with the knife 17 and a Drive 21 by means of a chain which runs over two sprockets 22, 23 which are mounted at the ends of the profiles 8. The sprocket 22 is through one electric gear motor 24 driven. The other sprocket 23 is on a chain tensioner 25 is mounted, in the vicinity of which each profile 8 a has lateral opening 26, which the assembly and disassembly of the knife 17 relieved on the carriage 20. A removable housing 27, above the lower jaw 13 arranged, protects the knife 17 in this Zone. Another housing 28 protects the one used to drive the carriage 20 Chain.

In den Figuren 5 und 6 ist der Wagen 20 dargestellt, der im wesentlichen aus zwei seitlichen Platten 30 besteht, zwischen denen sich das Messer 17 befindet. An den Enden der zwei Platten 30 sind die Enden der Kette befestigt. 5 and 6, the carriage 20 is shown, which essentially consists of there are two side plates 30, between which the knife 17 is located. The ends of the chain are attached to the ends of the two plates 30.

Mittels als Rollen dienenden Kugellagern 33 ist der Wagen im Inneren des Profils 8 geführt. Hierbei ist der äußere Durchmesser jedes Kugellagers kleiner als die lichte Höhe im Inneren des Profils 8, um ein vertikales Spiel 34 von Wagen 20 und Messer 17 zu erhalten und eine Selbstzentrierung des Messers 17 auf dem zu schneidenden Band zu erlauben, wie dies später noch beschrieben wird. Die Platten 30 und das Messer 17 sind durch horizontale Schrauben miteinander verbunden, die durch Bohrungen hindurchführen.By means of ball bearings 33 serving as rollers, the carriage is inside the Profile 8 led. The outer diameter of each ball bearing is smaller than the clear height inside the profile 8 to a vertical play 34 of Obtain carriage 20 and knife 17 and self-centering of the knife 17 to allow on the tape to be cut, as will be described later becomes. The plates 30 and the knife 17 are horizontal Connected screws that pass through holes.

In Fig. 6 ist dargestellt, daß jedes Ende des Messers 17 mit einer Schneidkerbe versehen ist, die im Längsprofil ungefähr V-Form aufweist, welche zwei einander gerade gegenüberliegende Parteien 36 und 37 aufweist, von denen eine zur anderen symmetrisch in bezug auf die horizontale Mittellinie 38 ist. Jede V-förmige Schneide endet in einem mittleren konkaven Abschnitt 39. Das Messer 17 ist vorzugsweise aus Schnellstahl hergestellt, welcher mittels eines Lasers ausgeschnitten wird. Die Behandlung der Schneidkerbe und der Schneidwinkel hängt von dem zu schneidenden Produkt ab. Im allgemeinen ist die Schärfung gering, um die Schneidkerbe nicht zu empfindlich zu machen. Diese Konstruktion erlaubt es, ein relativ dünnes Messer 17 herzustellen, welches Gummi oder auch Metallarmierungen und anderes Material schneiden kann, welches in dem Gummi eingelassen ist. Die symmetrische Anordnung der beiden Schneidpartien 36 und 37 des Messers schafft eine Selbstzentrierung des Messers 17 in bezug auf das zu schneidende Element, welches zwischen den zwei Klemmbacken 10,13 gehalten wird. Im vorliegenden Fall ist es das vertikale Spiel des Wagens 20 in der oberen Klemmbacke 10, welches die Selbstzentrierung erlaubt.In Fig. 6 it is shown that each end of the knife 17 has a cutting notch is provided, which has approximately V-shape in the longitudinal profile, which two has just opposite parties 36 and 37, of which one to the other is symmetrical with respect to the horizontal center line 38. Each V-shaped cutting edge ends in a central concave section 39. The knife 17 is preferably made of high-speed steel, which means a laser is cut out. The treatment of the cutting notch and the Cutting angle depends on the product to be cut. Generally is the sharpening is low in order not to make the cutting notch too sensitive. This construction makes it possible to produce a relatively thin knife 17 which Cut rubber or metal reinforcements and other material can, which is embedded in the rubber. The symmetrical arrangement of the two cutting sections 36 and 37 of the knife creates one Self-centering of the knife 17 with respect to the element to be cut, which is held between the two jaws 10.13. in the in the present case it is the vertical play of the carriage 20 in the upper one Clamping jaw 10, which allows self-centering.

Das Spiel kann auch erreicht werden, indem das Messer 17 beweglich auf dem Wagen 20 montiert ist. Während des Schnittes wird das Messer 17 quer zu dem Band und durch die Schlitze 16 und 19 hindurchgeführt, die sich zwischen den beiden oberen und unteren Klemmbacken 10,13 befinden.The game can also be achieved by moving the knife 17 on the carriage 20 is mounted. During the cut, the knife 17 becomes transverse to the belt and through the slots 16 and 19 which are between the two upper and lower jaws 10.13.

Daß das Messer 17 zwei Paare von Schneidpartien 36, 37 hat, erlaubt gegebenenfalls Schnitte abwechselnd in der einen und dann in die andere Richtung. Aber selbst in Fällen, in denen ein wechselweiser Schnitt nicht beabsichtigt ist, kann diese Messerart von Interesse sein, weil es nach dem Stumpfwerden der einen Schneidkerbe ausreicht, die Arbeitsrichtung umzukehren und auf die jeweils andere Schneidkerbe zu wechseln.That the knife 17 has two pairs of cutting sections 36, 37 allows if necessary, cuts alternately in one and then in the other Direction. But even in cases where an alternate cut is not This knife type may be of interest because it is intended If one cutting notch suffices, the working direction reverse and switch to the other notch.

Die Figuren 7 und 8 stellen im Vergleich zu den Figuren 1 bis 6 eine Variante der Messerführung dar, um speziell dicke Bänder zu schneiden, die durch sehr starke Stahlseile verstärkt sind. Das Messer 50 ist das wesentliche Element eines Wagens 51, wobei die obere Klemmbacke 10 eine Achse 52 mit zwei kugelgelagerten Gleitlagern 53 enthält. In der unteren Klemmbacke 13 sitzt eine Achse 54 mit zwei kugelgelagerten Gleitlagern 55. Das Messer 50 hat eine gerade geformte, schräg in Schneidrichtung verlaufende Schneidkante 50'. Es ist vorzugsweise aus Schnellstahl hergestellt. Die Flansche 14 der unteren Klemmbacken 13 können mit festen Klingen 56 versehen sein, die ebenfalls aus Schneidstahl hergestellt sind. Die Klinge 56 besteht aus zwei Schneidkanten 56' beidseitig des Schlitzes 16 der unteren Klemmbacke 13. Sobald das Messer 50 während des Schnittes auf einen Widerstand trifft, wird es in einer Position gehalten, in der die Gleitlager 53 des Wagens 51 gegen die oberen Flansche der Profile 8 drücken, wobei die Gleitlager 55 gegen die Rückseite der Flansche 14 der Profile 3 gedrückt werden. In dieser Position übt die Schneidkerbe 50' eine Kraft auf das zu schneidende Band aus, wovon ein Teil sich auf die untere Klemmbacke 13 richtet und versucht, die inneren Seile des zu schneidenden Bandes zwischen der Schneidkante 50' des Messer 50 und den Schneidkanten 56' der Klingen 56 abzuquetschen. Bei einer Variante ist es ferner möglich, daß das Messer 50 eine Kerbe der Art enthält, daß eine Schneidkerbe in V-Form entsprechend dem voranstehend beschriebenen Ausführungsbeispiel entsteht.Figures 7 and 8 represent a variant compared to Figures 1 to 6 the knife guide to cut especially thick strips that are very strong steel cables are reinforced. The knife 50 is the essential element a carriage 51, the upper jaw 10 having an axis 52 with two contains ball-bearing plain bearings 53. One sits in the lower jaw 13 Axis 54 with two ball-bearing plain bearings 55. The knife 50 has one straight shaped cutting edge 50 'which runs obliquely in the cutting direction. It is preferably made of high-speed steel. The flanges 14 of the lower one Clamping jaws 13 can be provided with fixed blades 56, which are also are made of cutting steel. The blade 56 consists of two cutting edges 56 'on both sides of the slot 16 of the lower jaw 13. As soon as that Knife 50 encounters resistance during the cut, it becomes in one Position held in which the slide bearing 53 of the carriage 51 against the upper Press the flanges of the profiles 8, with the plain bearings 55 against the back the flanges 14 of the profiles 3 are pressed. In this position she practices Cutting notch 50 'exerts a force on the strip to be cut, part of which focuses on the lower jaw 13 and tries the inner ropes of the band to be cut between the cutting edge 50 'of the knife 50 and to squeeze the cutting edges 56 'of the blades 56. One variant is it is also possible that the knife 50 contains a notch of the type that a V-shaped cutting notch corresponding to that described above Embodiment arises.

Die Durchführung des Verfahrens erfolgt äußerst einfach und kann ohne Schwierigkeiten automatisiert werden. Die entsprechenden Bedienungseinrichtungen sind in einem Steuerkasten 40 installiert, welcher u.a. die elektrische Steuereinheit und die Stromversorgung für den Getriebemotor 24 enthält, sowie ferner die elektrohydraulischen oder elektropneumatischen Einheiten zur Betätigung der Zylinder 12.The procedure is extremely simple and can be done without Difficulties are automated. The corresponding controls are installed in a control box 40, which i.a. the electrical Control unit and the power supply for the geared motor 24 contains as well as the electrohydraulic or electropneumatic units for Actuation of the cylinders 12.

In Fig. 3 ist das zu schneidende Band 41 dargestellt, bei dem es sich z.B. um ein durch Drähte oder Metallseile 42 verstärktes Gummitransportband handelt, welches quer entsprechend einer Schneidlinie 43 geschnitten werden muß. In Fig. 3 the band 41 to be cut is shown, which is e.g. around a rubber conveyor belt reinforced by wires or metal cables 42, which must be cut transversely according to a cutting line 43.

Das auf den Rollen 7 plazierte Band 41 kann durch eine Bedienperson manuell zwischen die Klemmbacken 10 und 13 geschoben werden, bevor das Schneidverfahren beginnt. Es ist auf diese Weise möglich, ein altes, abgenutztes Transportband schnell in leicht zu handhabende Stücke zu zerkleinern.The belt 41 placed on the rollers 7 can be operated manually by an operator be pushed between the jaws 10 and 13 before that Cutting process begins. It is possible in this way, an old, worn one Quickly shred conveyor belt into easy-to-use pieces.

Nachdem sich das Band 41 mit richtiger Lage der gewünschten Schneidlinie 43 zwischen den Klemmbacken 10, 13 befindet, werden zunächst durch Betätigung der Zylinder 12 die Klemmbacken 10, 13 gegeneinander gepreßt. Sodann beginnt die durch den Antrieb erzeugte Bewegung des sich zunächst an einem Ende der Klemmbacken 10, 13 befindenden Messers 17. Da die beiden Schneidkanten des Messers in spitzem Winkel zueinander angeordnet sind, befindet sich das Band 41 während des Schnittes zwischen diesen beiden Schneidkanten, d.h. das Messer 17 zentriert sich selbsttätig bezüglich des Bandes 41. Dabei wird das Bandmaterial beidseitig von den Schneidkanten des Messers 17 erfaßt, so daß ein symmetrischer und besonders kraftvoller Schnitt erfolgt, der auch Metallarmierungen ohne weiteres durchtrennt.After the tape 41 is in the correct position of the desired cutting line 43 located between the jaws 10, 13 are first by actuation the cylinder 12, the jaws 10, 13 pressed against each other. Then begins the movement of the drive that begins one end of the jaws 10, 13 located knife 17. Since the two Cutting edges of the knife are arranged at an acute angle to one another, is the band 41 during the cut between these two Cutting edges, i.e. the knife 17 centers itself with respect to the Band 41. The band material is on both sides of the cutting edges of the knife 17 detected, so that a symmetrical and particularly powerful Cut is made, which also easily cuts through metal reinforcements.

In den Figuren 9 bis 12 ist eine weitere Ausführungsform der Schneidvorrichtung dargestellt. Die Klemmbacken 10, 13 sind an ihrem einen Ende über ein Drehgelenk 60 verbunden. Um das Band 41 von der anderen Seite her zwischen die maulartig geöffneten Klemmbacken 10, 13 einschieben zu können, läßt sich die Schneidvorrichtung einschließlich der Klemmbacken 10, 13 an dem dem Drehgelenk 60 abgewandten Ende 61 vollständig öffnen. Hierzu wird, wie Fig. 10 erkennen läßt, die Kolbenstange 62 des dort angeordneten Zylinders 12 nach Lösen eines Sicherungsbolzens 63 von der unteren Klemmbacke 13 getrennt. Sodann läßt sich die untere Klemmbacke 13 durch Verschwenken um das Gelenk 60 bezüglich der oberen Klemmbacke 10 absenken, und das Band 41 seitlich ein- oder ausführen. Dies ist bei Reparaturmaßnahmen an endlosen Förderbändern, die sich nicht stirnseitig in die Schneidvorrichtung einschieben lassen, von besonderem Vorteil. An demselben Ende der Klemmvorrichtung, an dem sich auch das Drehgelenk 60 befindet, ist ein zwischen die beiden Klemmbacken 10, 13 einschwenkbarer Anschlag 64 befestigt, mit dem sich der maximale Öffnungswinkel der Klemmbacken 10, 13 begrenzen läßt. FIGS. 9 to 12 show a further embodiment of the cutting device shown. The jaws 10, 13 are at one end over a Swivel joint 60 connected. To the band 41 from the other side between to be able to insert the jaw-like jaws 10, 13, can the cutting device including the jaws 10, 13 open the end 61 facing away from the swivel 60 completely. For this 10, the piston rod 62 of the arranged there Cylinder 12 after loosening a locking bolt 63 from the lower jaw 13 separated. Then the lower jaw 13 can be pivoted lower around hinge 60 with respect to upper jaw 10, and insert or run the tape 41 laterally. This is with repair measures on endless conveyor belts that are not on the front side of the cutting device Let it slide in, a particular advantage. At the same end the clamping device, on which the swivel joint 60 is also located, is a fixed stop 64 which can be swiveled in between the two clamping jaws 10, 13, with which the maximum opening angle of the jaws 10, 13 limit.

Tragösen 65 an der Oberseite der Schneidvorrichtung erlauben es, diese mittels eines Krans an den gewünschten Einsatzort zu heben, und gegebenenfalls in angehobener Lage Schnitte durchzuführen. Anstelle der Tragösen 65 oder zusätzlich hierzu können auch Führungen für die Zinken eines Gabelstaplers oder eines anderen Fördergerätes vorgesehen sein.Carrying eyelets 65 on the top of the cutting device allow this to be lifted to the desired location using a crane, and if necessary, make cuts in a raised position. Instead of Carrying eyelets 65 or, in addition, guides for the tines a forklift or another conveyor.

Bei der in den Figuren 11 und 12 dargestellten Ausführungsform der Klemmbacken 10, 13, des Wagens 20 und des Messers 17 besteht jede der beiden Klemmbacken 10, 13 aus zwei parallel angeordneten Trägern in Gestalt eines Doppel-T. Das obere Trägerpaar bildet die obere Klemmbacke 10, das untere Trägerpaar die untere Klemmbacke 13. Durch geeignete Distanzelemente ist der Abstand der Träger so gering, daß die verbleibenden Längsschlitze 16, 19 gerade für den Durchtritt des Messers 17 ausreichen. Die Führung des Messers 17 erfolgt auf diese Weise überwiegend durch die Kanten dieser Längsschlitze 16, 19. Diese Führung ist so knapp, daß sich das Messer 17 in Bandlängsrichtung im wesentlichen starr verhält.In the embodiment of the clamping jaws shown in FIGS. 11 and 12 10, 13, the carriage 20 and the knife 17 each of the two Clamping jaws 10, 13 made of two carriers arranged in parallel in the form of a Double. The upper pair of supports forms the upper jaw 10, the lower one Carrier pair the lower jaw 13. By means of suitable spacers the distance between the carriers is so small that the remaining longitudinal slots 16, 19th just enough for the passage of the knife 17. The guidance of the knife 17 takes place in this way predominantly through the edges of these longitudinal slots 16, 19. This guide is so scarce that the knife 17 in the longitudinal direction of the tape behaves essentially rigid.

Hingegen hat das Messer 17 in Richtung senkrecht zu den Flachseiten 66 des Bandes 41 ein deutliches Spiel 34. Dieses Spiel 34 setzt sich gemäß Fig. 12 aus einem oberen Spiel 34' und einem unteren Spiel 34'' zusammen. Das obere Spiel 34' besteht zwischen Stützrollen 67 im Bereich der oberen Längsseite des Wagens 20 und dort angeordneten Führungsflächen 68 der den Wagen aufnehmenden Klemmbacke 10. Das untere Spiel 34'' besteht zwischen der Unterseite 69 des Wagens 20 und dem dortigen Flansch 18 der Klemmbacke 10. Der Antrieb 21 in Gestalt der Kette ist über einen Bolzen 69' nahe der Unterseite 69 des Wagens 20 befestigt, um eine Krafteinleitung nahe des Messers 17 zu erreichen.In contrast, the knife 17 in the direction perpendicular to the flat sides 66 of the Volume 41 a clear game 34. This game 34 continues according to FIG. 12 composed of an upper game 34 'and a lower game 34' '. The Upper game 34 'exists between support rollers 67 in the area of the upper long side of the carriage 20 and guide surfaces 68 of the carriage arranged there receiving jaw 10. The lower game 34 "exists between the bottom 69 of the carriage 20 and the flange 18 there of the jaw 10. The drive 21 in the form of the chain is close by a bolt 69 ' the bottom 69 of the carriage 20 attached to force transmission near the Knife 17 to reach.

Infolge des Spiels des Wagens 20 zentriert sich das starr mit dem Wagen 20 verbundene Messer 17 selbsttätig in vertikaler Richtung bezüglich des Bandes 41 bzw. der darin eingelagerten Drähte und Metallseile 42. Die Drähte gelangen daher beim Schneiden genau in jenen konkav geschliffenen Abschnitt 39, an dem die beiden symmetrisch geschliffenen Schneidkanten 70, 71 des Messers zusammenlaufen. Der Abstand der Schneidkanten 70, 71 ist hier geringer als der Durchmesser der zu durchtrennenden Metalldrähte 42. Bei dem Ausführungsbeispiel gemäß Fig. 12 sind die V-förmig und damit in einem spitzen Winkel zueinander angeordneten Schneidkanten 70, 71 jeweils gerade geformt. Es ist aber auch möglich, die Schneidkanten 70, 71 mit einer leicht konvexen Kontur in Richtung auf das Band 41 zu versehen, z.B. mit der Kontur einer Parabel. Hierbei weisen die Schneidkanten 70, 71 in Richtung auf das Ende der Schneidkerbe bei dem Abschnitt 39 hin einen immer spitzer werdenden Winkel auf. Der mittlere Winkel zwischen den Schneidkanten 70, 71 sollte auch in diesem Fall mindestens 10° und höchstens 45° betragen.As a result of the play of the carriage 20, this is centered rigidly on the carriage 20 connected knife 17 automatically in the vertical direction with respect to the belt 41 or the wires and metal cables 42 stored therein. The wires arrive therefore when cutting exactly in that concavely ground section 39, on which the two symmetrically ground cutting edges 70, 71 of Knife converge. The distance between the cutting edges 70, 71 is here less than the diameter of the metal wires 42 to be cut 12 are V-shaped and thus in one acute angles to each other arranged cutting edges 70, 71 each straight shaped. But it is also possible to cut the cutting edges 70, 71 easily to provide a convex contour towards the band 41, e.g. with the Contour of a parabola. Here, the cutting edges 70, 71 point in the direction the end of the cutting notch at section 39 is always pointed increasing angle. The average angle between the cutting edges 70, 71 should also be at least 10 ° and at most 45 ° in this case.

Anstelle eines Schliffs des Messers 17 selbst ist es auch möglich, das Messer als Grundkörper auszubilden, in den dann geeignete Schneideinsätze eingesetzt werden, z.B. Schneideinsätze aus Widiastahl oder aus Keramik. In diesem Fall ist nach einem Stumpfwerden des Messers keine Demontage des Messers oder sogar des Wagens erforderlich. Vielmehr müssen nur die Schneideinsätze ausgetauscht werden.Instead of a sharpening of the knife 17 itself, it is also possible for the knife to be designed as a base body, in which suitable cutting inserts are then used e.g. Cutting inserts made of Widia steel or ceramic. In In this case, the knife cannot be dismantled after the knife becomes blunt Knife or even the carriage required. Rather, only that Cutting inserts are exchanged.

Um einen gleichmäßigen Preßdruck der Klemmbacken 10, 13 über deren gesamte Länge zu erreichen, kann eine geeignete Biegelinienkompensation vorgesehen sein, z. B. durch eine genau bestimmte, konvexe Vorbiegung beider Klemmbacken 10, 13 zueinander. To ensure a uniform pressure of the jaws 10, 13 over their entire Appropriate bending line compensation can be provided to achieve length be, e.g. B. by a precisely determined, convex pre-bending of both Jaws 10, 13 to each other.

BezugszeichenlisteReference list

11
UnterbauSubstructure
1'1'
Rahmenframe
22nd
StützbockTrestle
33rd
U-ProfilU profile
44th
Trägercarrier
4'4 '
Strebestrut
55
Traversetraverse
66
LängsträgerSide member
77
Rollerole
88th
U-ProfilU profile
99
Bügelhanger
1010th
obere Klemmbackeupper jaw
1212th
Zylindercylinder
1313
untere Klemmbackelower jaw
1414
Flanschflange
1616
Schlitzslot
1717th
Messerknife
1818th
Flanschflange
1919th
Schlitzslot
2020th
Wagendare
2121
Antriebdrive
2222
KettenradSprocket
2323
KettenradSprocket
2424th
GetriebemotorGear motor
2525th
KettenspannvorrichtungChain tensioner
2626
Öffnungopening
2727
Gehäusecasing
2828
Gehäusecasing
3030th
Platteplate
3333
Kugellager, StützrolleBall bearing, support roller
3434
Spielgame
34'34 '
Spielgame
34''34 ''
Spiel game
3636
erste Partie des Messersfirst batch of knife
3737
zweite Partie des Messerssecond batch of knife
3838
MittellinieCenter line
3939
konkaver Abschnittconcave section
4040
SteuerkastenControl box
4141
Bandtape
4242
Drähte, MetallseileWires, metal cables
4343
SchneidlinieCutting line
5050
Messerknife
50'50 '
SchneidkanteCutting edge
5151
Wagendare
5252
Achseaxis
5353
Gleitlagerbearings
5454
Achseaxis
5555
Gleitlagerbearings
5656
feste Klingefixed blade
56'56 '
SchneidkanteCutting edge
6060
DrehgelenkSwivel
6161
EndeThe End
6262
KolbenstangePiston rod
6363
SicherungsbolzenSafety bolt
6464
Anschlagattack
6565
TragöseTragose
6666
Flachseite des BandesFlat side of the tape
6767
StützrolleSupport roller
6868
FührungsflächeLeadership area
6969
Unterseite des WagensUnderside of the car
69'69 '
Bolzenbolt
7070
erste Schneidkantefirst cutting edge
7171
zweite Schneidkantesecond cutting edge

Claims (13)

  1. Method for cutting belts (41) which are provided with reinforcement inserts (42), in particular for cutting conveyor belts made from a reinforced elastomer, in which method the belt is arranged between two clamping jaws (10, 13), and to make the cut the clamping jaws are pressed together with the belt arranged between them, and at the same time a blade (17) is guided through the belt material along the clamping jaws and transversely to the longitudinal direction of the belt, by means of a drive (21), characterized in that the belt material, during the cutting, is taken hold of on both sides by cutting edges (36, 37, 70, 71, 50', 56') of the blade, which cutting edges between them form an acute angle and are each straight or curved convexly towards the belt.
  2. Method according to Claim 1, characterized in that the blade is guided through the belt material with a considerable degree of perpendicular play, the blade being automatically centred with respect to the reinforcement insert enclosed in the belt.
  3. Cutting device for carrying out the method according to Claim 1, which is suitable for conveyor belts made from a steel-reinforced elastomer, having a clamping device comprising two clamping jaws (10, 13) which are arranged transversely with respect to the belt (41) and can be pressed together with the belt (41) between them, and having a blade (17) which can be moved along the clamping device using a drive (21) and has at least one cutting edge (36, 70, 50'), characterized in that the cutting edge (36, 70, 50') is straight or is curved convexly towards the belt, in that a further cutting edge (37, 71, 56') is arranged at an acute angle to the cutting edge (36, 70, 50'), and in that the belt (41) is situated between the two cutting edges (36, 70, 50'; 37, 71, 56') during the cutting operation.
  4. Cutting device according to Claim 3, characterized in that both cutting edges (36, 70; 37, 71) are formed integrally on the blade (17).
  5. Cutting device according to Claim 3 or 4, characterized in that the two cutting edges (36, 70; 37, 71) are designed to be symmetrical with respect to one another and together form an approximately V-shaped cutting notch.
  6. Cutting device according to one of Claims 3 to 5, characterized in that the blade (17) has a considerable degree of play (34, 34', 34'') in the direction perpendicular to the flat sides of the belt (41), whereas the blade (17) is essentially rigid in the longitudinal direction of the belt.
  7. Cutting device according to one of Claims 3 to 6, characterized in that the blade (17) is arranged on a carriage (20) which can move to and fro along the clamping device.
  8. Cutting device according to Claim 7, characterized in that the blade (17) is rigidly attached to the carriage (20), and in that the carriage (20) is guided with a considerable degree of perpendicular play (34, 34', 34'') on one of the two clamping jaws (10, 13) of the clamping device.
  9. Cutting device according to Claim 8, characterized in that the carriage (20) is provided, on its longitudinal side which is remote from the blade (17), with supporting rollers (33, 67) which are able to run on guide faces (68) of the clamping jaw (10) which accommodates the carriage (20), and in that pulling means (21) are provided in order to move the carriage (20), which pulling means are attached to the carriage (20) in that half of the carriage (20) which faces towards the blade (17).
  10. Cutting device according to one of Claims 3 to 9, characterized in that the clamping jaw (10, 13) is provided with a longitudinal slot (16, 19) through which the blade (17) is guided.
  11. Cutting device according to Claim 10, characterized in that the lateral guidance of the blade (17) is effected completely or partly by the longitudinal slot (16, 19).
  12. Cutting device according to one of Claims 3 to 11, characterized in that the clamping jaws (10, 13) can be pivoted with respect to one another by means of a pivot joint (60), and in that the cutting device, including the clamping jaws (10, 13), can be opened completely at its end (61) which is remote from the pivot joint (60), in order in this way to be able to insert the belt (41) between the open clamping jaws (10, 13) from the side.
  13. Cutting device according to Claim 12, characterized by means (stop 64) for limiting the opening angle of the clamping jaws (10, 13).
EP96102886A 1995-03-15 1996-02-27 Method and apparatus for cutting belts with reinforcing layers Expired - Lifetime EP0732179B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9503176 1995-03-15
FR9503176A FR2731645B1 (en) 1995-03-15 1995-03-15 APPARATUS FOR CUTTING A FLEXIBLE FLAT ELEMENT, IN PARTICULAR A CONVEYOR BELT

Publications (2)

Publication Number Publication Date
EP0732179A1 EP0732179A1 (en) 1996-09-18
EP0732179B1 true EP0732179B1 (en) 1999-07-28

Family

ID=9477173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96102886A Expired - Lifetime EP0732179B1 (en) 1995-03-15 1996-02-27 Method and apparatus for cutting belts with reinforcing layers

Country Status (11)

Country Link
EP (1) EP0732179B1 (en)
CN (1) CN1141228A (en)
CA (1) CA2171799A1 (en)
CZ (1) CZ288169B6 (en)
DE (1) DE59602509D1 (en)
ES (1) ES2136334T3 (en)
FR (1) FR2731645B1 (en)
GR (1) GR3031676T3 (en)
PL (1) PL180263B1 (en)
RU (1) RU2159177C2 (en)
ZA (1) ZA962086B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103737951A (en) * 2013-12-26 2014-04-23 桂林橡胶机械厂 Anti-package adjusting device of waterstops

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3233459B1 (en) * 2014-12-17 2021-08-04 Pirelli Tyre S.p.A. Process and apparatus for building tyres for vehicle wheels
CN111284051A (en) * 2016-08-31 2020-06-16 马鞍山锐生工贸有限公司 Rubber V-belt processing system
CN109049776B (en) * 2016-08-31 2020-11-03 马鞍山锐生工贸有限公司 Conveying belt production system
CN109866260B (en) * 2019-03-11 2023-08-29 宇恒电池股份有限公司 Film cutting machine
CN114131676B (en) * 2022-01-29 2022-04-12 胜利油田长龙橡塑有限责任公司 Automatic cutting device is used in production of beam-pumping unit V belt

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Publication number Priority date Publication date Assignee Title
DE927315C (en) * 1948-10-02 1955-05-05 Curt Matthaei Cutting device for conveyor belts u. like
DE819802C (en) * 1950-09-07 1951-11-05 Hans Ziller Device for cutting conveyor belts, drive belts or the like.
DE834951C (en) * 1950-12-09 1952-03-27 Matthias Schlebusch Cross cutting device
GB839441A (en) * 1958-10-28 1960-06-29 Ernest Arthur Timson Improved means for cutting webs of paper or the like
FR1361430A (en) * 1963-03-29 1964-05-22 Cerclage Pierre Brunon Apparatus for unwinding and cutting roll paper
FR2098592A5 (en) * 1970-07-21 1972-03-10 Lagain Georges
FR2458497A3 (en) * 1979-06-05 1981-01-02 Kt Cutting machine for elastic material delivered as a web - holds fabric preventing wrinkling sepg. it from conveyor
US4329896A (en) * 1980-04-09 1982-05-18 Karl Singer Slitter for severing laminated objects
WO1989012532A1 (en) * 1988-06-24 1989-12-28 Hot Roller Laminating Co. (Melb.) Pty. Ltd. Cutter devices
DE4125917A1 (en) * 1991-08-05 1993-02-11 Stork Gmbh Regelungstechnik Un Flexible plate cutter - has retainer to hold the plate for cutting mechanism without limit stops

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103737951A (en) * 2013-12-26 2014-04-23 桂林橡胶机械厂 Anti-package adjusting device of waterstops

Also Published As

Publication number Publication date
FR2731645B1 (en) 1997-05-23
CA2171799A1 (en) 1996-09-16
AU4805596A (en) 1996-09-26
GR3031676T3 (en) 2000-02-29
ZA962086B (en) 1996-11-27
PL180263B1 (en) 2001-01-31
CN1141228A (en) 1997-01-29
AU688669B2 (en) 1998-03-12
CZ288169B6 (en) 2001-05-16
FR2731645A1 (en) 1996-09-20
RU2159177C2 (en) 2000-11-20
PL313206A1 (en) 1996-09-16
CZ61596A3 (en) 1996-10-16
EP0732179A1 (en) 1996-09-18
ES2136334T3 (en) 1999-11-16
DE59602509D1 (en) 1999-09-02

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