EP0149854B1 - Device for cutting foamed plastic - Google Patents

Device for cutting foamed plastic Download PDF

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Publication number
EP0149854B1
EP0149854B1 EP84116463A EP84116463A EP0149854B1 EP 0149854 B1 EP0149854 B1 EP 0149854B1 EP 84116463 A EP84116463 A EP 84116463A EP 84116463 A EP84116463 A EP 84116463A EP 0149854 B1 EP0149854 B1 EP 0149854B1
Authority
EP
European Patent Office
Prior art keywords
equipment according
frame
cutting
supporting construction
holding rods
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
Application number
EP84116463A
Other languages
German (de)
French (fr)
Other versions
EP0149854A2 (en
EP0149854A3 (en
Inventor
Siegmar Dipl. -Ing. Hühne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Muenchow und Huehne Maschinenbaugesellschaft Mbh
MUNCHOW und HUHNE MASCHINENBAUGESELLSCHAFT MBH
Original Assignee
Muenchow und Huehne Maschinenbaugesellschaft Mbh
MUNCHOW und HUHNE MASCHINENBAUGESELLSCHAFT MBH
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Application filed by Muenchow und Huehne Maschinenbaugesellschaft Mbh, MUNCHOW und HUHNE MASCHINENBAUGESELLSCHAFT MBH filed Critical Muenchow und Huehne Maschinenbaugesellschaft Mbh
Publication of EP0149854A2 publication Critical patent/EP0149854A2/en
Publication of EP0149854A3 publication Critical patent/EP0149854A3/en
Application granted granted Critical
Publication of EP0149854B1 publication Critical patent/EP0149854B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B26D1/547—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 wire-like cutting member
    • B26D1/553—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 wire-like cutting member with a plurality of wire-like cutting members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0267—Splitting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/283—With means to control or modify temperature of apparatus or work
    • Y10T83/293—Of tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/687—By tool reciprocable along elongated edge
    • Y10T83/6895—Plural reciprocable tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9292—Wire tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9454—Reciprocable type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection

Definitions

  • the invention relates to a device for cutting a foam plastic body or the like, with a cutting wire system, the cutting wires of which are essentially parallel to one another and are eccentrically fastened with their ends to at least two holding rods arranged at a distance from one another, parallel to one another and perpendicular to the cutting wires, which are in the region of their ends in a support frame encompassing the foam plastic body, designed as a U-frame with an upper cross member, and rotatable about its longitudinal axis by means of an oscillation drive assigned to the lower ends of the holding rods.
  • Such a device is known from EP-A-0 003 167 and US-A-4 222 299 belonging to the same patent family.
  • cutting wire tears and / or breaks of the end coil springs which tension the cutting wires can occur.
  • the known device is designed for changing all cutting wires.
  • the cutting wires are connected to the mounting bars via additional strips that can be detached from the mounting bars.
  • the additional strips with all cutting wires are therefore removed from the holding rods and other additional strips with cutting wires are fastened to the holding rods.
  • the invention has for its object to design the device of the type mentioned so that the changing of all cutting wires can be carried out by a single person in a relatively short time.
  • the support frame is pivotally mounted at its upper end with lateral pins about an axis parallel to the cutting wires in mounting recesses of an auxiliary support structure and is held at its lower end by means of a releasable pressing device against supporting abutments on the auxiliary support structure, wherein the auxiliary support structure is designed as a U-frame with an upper cross member, and that the free lower ends of the support rods are connected to the oscillation drive via radial plug-in couplings.
  • the invention uses the knowledge that the desired goal can only be achieved if the support frame, which is a more or less rigid component, as a whole, i.e. including the support rods is interchangeable. To remove this support frame, only the pressing device has to be released, whereupon the support frame can be easily lifted out of the device.
  • the device is used to cut a foam plastic body 1, for example cuboid polystyrene foam plastic body into sheets, with the aid of a cutting wire system.
  • this cutting wire system can be stationary, in which case the foam plastic body 1 to be cut is moved in the direction of the arrow 2.
  • mount the cutting wire system on a carriage that can be moved on a machine frame and to move it along the stationary foam plastic body.
  • the cutting wire arrangement can be designed in various ways, e.g. with only two counter-rotating support rods 3, as described in EP-A-0 003 167 and US-A-4 222 299 belonging to the same patent family, or with only two support rods 3 oscillating in the same direction, but also with four support rods oscillate in pairs in the same or opposite directions, as described in DE-A-2 508 625 and US-A-4018116 belonging to the same patent family.
  • the cutting wire system in any case has a plurality of cutting wires 4 which are essentially parallel to one another and which are eccentrically fastened with at their ends to at least two holding rods 3 which are arranged at a distance from one another and run parallel to one another and perpendicular to the cutting wires 4 and are assigned to two sets of cutting wire which oscillate in opposite directions are.
  • the support rods 3 are rotatably supported in the region of their ends in a support frame 5 encompassing the foam plastic body 1 and can be pivoted back and forth about their longitudinal axis with the aid of an oscillation drive 6 assigned to the lower ends of the support rods 3.
  • the oscillation drive 6 consists of an eccentric drive with a motor 7, a flywheel 8 and a connecting rod 9 that engages a mounting rod 3.
  • the second mounting rod 3 is coupled to the first mounting rod 3 via an indicated synchronous connection 10. A corresponding procedure can be followed if further mounting rods 3 are present.
  • the upper end of the support frame 5 is about an axis parallel to the cutting wires 4 11 pivotally suspended in suspension recesses 12 of an auxiliary support structure 13 and held at its lower end by means of a releasable pressing device 14 against abutments 15 on the auxiliary support structure 13.
  • the free lower ends of the support rods 3 are connected to the oscillation drive 6 via radial plug-in couplings 16.
  • the support frame 5 is suspended with lateral pins 17 in the suspension recesses 12 and, like the auxiliary support structure 13, is designed as a U-frame with an upper cross member. A lower crossbeam is missing because there are other machine parts at the corresponding location, such as a conveyor belt for the foam plastic body 1.
  • the auxiliary support structure 13 is shown as part of the machine frame; however, as has already been indicated above, it could also be arranged on a carriage which can be moved in the machine frame.
  • the abutment 15 holding the support frame 5 in position consists of spherical cap recesses 18 on the auxiliary support structure 13, into which correspondingly shaped spherical cap projections 10 on the support frame 5 engage when the pressing device 14 is actuated.
  • the power connections for the electrically heatable cutting wires 4 consist of carbon brushes, which are spring-loaded against the pressing device 14, for the mounting rods 3, which carbon brushes thus provide an automatic power connection when the pressing device 14 is actuated.
  • FIG. 1 shows that the support frame 5 can be removed from the auxiliary support structure 13 after the pressing device 14 has been loosened with the aid of a lifting device 20, which can cooperate with a support frame magazine.
  • the support frame 5 is guided with lower lateral pins 21 on inclined guides 22 of the auxiliary support structure 13.
  • these oblique guides 22 also ensure that the latter comes into the correct position.
  • the pressing device 14 consists of two pneumatic cylinder piston assemblies assigned to the ends of the support frame 5.
  • the lifting device 20 can also consist of such a pneumatic cylinder piston arrangement.
  • Fig. 2 shows how the radial plug-in couplings 16 are designed; seen in the longitudinal direction of the support rods 3, they have trapezoidal coupling halves which taper in the pressing direction.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Zerschneiden eines Schaumkunststoffkörpers oder dergleichen, mit einem Schneiddrahtsystem, dessen zueinander im wesentlichen parallele Schneiddrähte mit ihren Enden an zumindest zwei mit Abstand voneinander angeordneten, parallel zueinander und senkrecht zu den Schneiddrähten verlaufenden Halterungsstäben exzentrisch befestigtsind, welche im Bereich ihrer Enden in einem den Schaumkunststoffkörper umgreifenden, als U-Rahmen mit oberer Traverse ausgebildeten Tragrahmen drehbar gelagert und mit Hilfe eines den unteren Enden der Halterungsstäbe zugeordneten Oszillationsantriebes um ihre Längsachse hin und her verschwenkbar sind.The invention relates to a device for cutting a foam plastic body or the like, with a cutting wire system, the cutting wires of which are essentially parallel to one another and are eccentrically fastened with their ends to at least two holding rods arranged at a distance from one another, parallel to one another and perpendicular to the cutting wires, which are in the region of their ends in a support frame encompassing the foam plastic body, designed as a U-frame with an upper cross member, and rotatable about its longitudinal axis by means of an oscillation drive assigned to the lower ends of the holding rods.

Eine derartige Vorrichtung ist aus der EP-A-0 003 167 und der zur selben Patentfamilie gehörenden US-A-4 222 299 bekannt. Beim Betrieb solcher Vorrichtungen kann es zu Schneiddrahtrissen und/oder Brüchen von die Schneiddrähte spannenden endseitigen Schraubenfedern kommen. Grundsätzlich besteht dann zwar die Möglichkeit, nur diesen Schneiddraht bzw. die betreffende Schraubenfeder auszuwechseln. Hierfür wird jedoch verhältnismäßig viel Zeit benötigt, in der die Vorrichtung nicht weiter arbeiten kann. Zur Verkürzung dieser Stillstandszeiten ist die bekannte Vorrichtung für Wechslung sämtlicher Schneiddrähte ausgelegt. Zu diesem Zweck sind die Schneiddrähte über von den Halterungsstäben lösbare Zusatzleisten mit den Halterungsstäben verbunden. Zum Wechsel der Gesamtheit der Schneiddrähte werden daher die Zusatzleisten mit sämtlichen Schneiddrähten von den Halterungsstäben abgenommen und andere Zusatzleisten mit Schneiddrähten an den Halterungsstäben befestigt. Diese Maßnahmen erfordern mindestens zwei Personen mit hoher Geschwindigkeit, weil die Halterungsstäbe einen verhältnismäßig großen Abstand voneinander haben und die Zusatzleisten mit den zwischenliegenden Schneiddrähten kein starres Bauteil bilden.Such a device is known from EP-A-0 003 167 and US-A-4 222 299 belonging to the same patent family. During the operation of such devices, cutting wire tears and / or breaks of the end coil springs which tension the cutting wires can occur. In principle, it is then possible to replace only this cutting wire or the coil spring in question. However, this takes a relatively long time in which the device cannot continue to work. In order to shorten these downtimes, the known device is designed for changing all cutting wires. For this purpose, the cutting wires are connected to the mounting bars via additional strips that can be detached from the mounting bars. In order to change the entirety of the cutting wires, the additional strips with all cutting wires are therefore removed from the holding rods and other additional strips with cutting wires are fastened to the holding rods. These measures require at least two people at high speed, because the support rods are at a relatively large distance from one another and the additional strips with the intermediate cutting wires do not form a rigid component.

Der Erfindung liegt die Aufgabe zugrunde, die Vorrichtung der eingangs genannten Art so auszubilden, daß das Wechseln sämtlicher Schneiddrähte von nur einer Person in verhältnismäßig kurzer Zeit durchgeführt werden kann.The invention has for its object to design the device of the type mentioned so that the changing of all cutting wires can be carried out by a single person in a relatively short time.

Die erfindungsgemäße Lösung dieser Aufgabe besteht darin, daß der Tragrahmen an seinem oberen Ende mit seitlichen Zapfen um eine zu den Schneiddrähten parallele Achse verschwenkbar in Einhängeausnehmungen einer Hilfstragkonstruktion eingehängt und mit seinem unteren Ende mit Hilfe einer lösbaren Anpreßeinrichtung gegen haltende Widerlager an der Hilfstragkonstruktion gehalten ist, wobei die Hilfstragkonstruktion als U-Rahmen mit oberer Traverse ausgebildet ist, und daß die freien unteren Enden der Halterungsstäbe über radiale Steckkupplungen mit dem Oszillationsantrieb verbunden sind.The solution to this problem according to the invention is that the support frame is pivotally mounted at its upper end with lateral pins about an axis parallel to the cutting wires in mounting recesses of an auxiliary support structure and is held at its lower end by means of a releasable pressing device against supporting abutments on the auxiliary support structure, wherein the auxiliary support structure is designed as a U-frame with an upper cross member, and that the free lower ends of the support rods are connected to the oscillation drive via radial plug-in couplings.

Die Erfindung nutzt hierbei die Erkenntnis, daß das gewünschte Ziel nur erreichbar ist, wenn der ein mehr oder weniger starres Bauteil darstellende Tragrahmen als ganzes, d.h. einschließlich der Halterungsstäbe auswechselbar ist. Zum Entfernen dieses Tragrahmens ist lediglich die Anpreßeinrichtung zu lösen, woraufhin der Tragrahmen ohne weiteres aus der Vorrichtung heraushebbar ist.The invention uses the knowledge that the desired goal can only be achieved if the support frame, which is a more or less rigid component, as a whole, i.e. including the support rods is interchangeable. To remove this support frame, only the pressing device has to be released, whereupon the support frame can be easily lifted out of the device.

Im folgenden werden die Erfindung und vorteilhafte Ausgestaltung derselben anhand einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen in schematischer Darstellung

  • Fig. 1 eine Seitenansicht einer Vorrichtung zum Zerschneiden eines Schaumkunststoffkörpers und
  • Fig. 2 einen Schnitt A-A durch den Gegenstand der Fig. 1.
In the following the invention and advantageous embodiment of the same will be explained in more detail with reference to a drawing showing an embodiment. They show a schematic representation
  • Fig. 1 is a side view of a device for cutting a foam plastic body and
  • 2 shows a section AA through the object of FIG. 1st

Die Vorrichtung dient zum Zerschneiden eines Schaumkunststoffkörpers 1, beispielsweise quaderförmigen Polystyrolschaumkunststoffkörpers in Platten, und zwar mit Hilfe eines Schneiddrahtsystems. Dieses Schneiddrahtsystem kann, wie in Fig. 1 dargestellt ist, ortsfest sein, wobei dann der zu zerschneidende Schaumkunststoffkörper 1 in Richtung des Pfeiles 2 bewegt wird. Es besteht aber ohne weiteres auch die Möglichkeit, das Schneiddrahtsystem auf einem Maschinengestell verfahrbaren Wagen zu montieren und längs des ortsfest gehaltenen Schaumkunststoffkörpers zu verfahren.The device is used to cut a foam plastic body 1, for example cuboid polystyrene foam plastic body into sheets, with the aid of a cutting wire system. As shown in FIG. 1, this cutting wire system can be stationary, in which case the foam plastic body 1 to be cut is moved in the direction of the arrow 2. However, it is also readily possible to mount the cutting wire system on a carriage that can be moved on a machine frame and to move it along the stationary foam plastic body.

Die in Einzelheiten nicht näher gezeigte Schneiddrahtanordnung kann auf verschiedene Weise gestaltet sein, so z.B. mit nur zwei gegenläufig oszillierenden Halterungsstäben 3, wie es in der EP-A-0 003 167 und der zur selben Patentfamilie gehörenden US-A-4 222 299 beschrieben ist, oder nur zwei gleichsinnig oszillierenden Halterungsstäben 3, aber auch mit vier Halterungsstäben, die paarweise gleich- bzw. gegensinnig oszillieren, so wie es in der DE-A-2 508 625 und der zur selben Patentfamilie gehörenden US-A-4018116 beschrieben ist. In all diesen Fällen weist das Schneiddrahtsystem jedenfalls mehrere zueinander im wesentlichen parallele Schneiddrähte 4 auf, die mit an ihren Enden an zumindest zwei mit Abstand voneinander angeordneten, parallel zueinander und senkrecht zu den Schneiddrähten 4 verlaufenden Halterungsstäben 3 exzentrisch befestigt sind und zwei gegenläufig oszillierenden Schneiddrahtsätzen zugeordnet sind.The cutting wire arrangement, not shown in detail, can be designed in various ways, e.g. with only two counter-rotating support rods 3, as described in EP-A-0 003 167 and US-A-4 222 299 belonging to the same patent family, or with only two support rods 3 oscillating in the same direction, but also with four support rods oscillate in pairs in the same or opposite directions, as described in DE-A-2 508 625 and US-A-4018116 belonging to the same patent family. In all these cases, the cutting wire system in any case has a plurality of cutting wires 4 which are essentially parallel to one another and which are eccentrically fastened with at their ends to at least two holding rods 3 which are arranged at a distance from one another and run parallel to one another and perpendicular to the cutting wires 4 and are assigned to two sets of cutting wire which oscillate in opposite directions are.

Die Halterungsstäbe 3 sind im Bereich ihrer Enden in einem den Schaumkunststoffkörper 1 umgreifenden Tragrahmen 5 drehbar gelagert und mit Hilfe eines den unteren Enden der Halterungsstäbe 3 zugeordneten Oszillationsantriebes 6 um ihre Längsachse hin und her verschwenkbar. Der Oszillationsantrieb 6 besteht ausweislich Fig. 1 aus einem Exzenterantrieb mit Motor 7, Schwungscheibe 8 und an einem Halterungsstab 3 angreifender Pleuelstange 9. Nach Fig. 2 ist der zweite Halterungsstab 3 über eine angedeutete Synchronverbindung 10 mit dem ersten Halterungsstab 3 verkuppelt. Entsprechend kann verfahren werden, wenn weitere Halterungsstäbe 3 vorhanden sind.The support rods 3 are rotatably supported in the region of their ends in a support frame 5 encompassing the foam plastic body 1 and can be pivoted back and forth about their longitudinal axis with the aid of an oscillation drive 6 assigned to the lower ends of the support rods 3. As shown in FIG. 1, the oscillation drive 6 consists of an eccentric drive with a motor 7, a flywheel 8 and a connecting rod 9 that engages a mounting rod 3. According to FIG. 2, the second mounting rod 3 is coupled to the first mounting rod 3 via an indicated synchronous connection 10. A corresponding procedure can be followed if further mounting rods 3 are present.

Der Tragrahmen 5 ist mit seinem oberen Ende um eine zu den Schneiddrähten 4 parallele Achse 11 verschwenkbar in Einhängeausnehmungen 12 einer Hilfstragkonstruktion 13 eingehängt und mit seinem unteren Ende mit Hilfe einer lösbaren Anpreßeinrichtung 14 gegen haltende Widerlager 15 an der Hilfstragkonstruktion 13 gehalten. Die freien unteren Enden der Halterungsstäbe 3 sind über radiale Steckkupplungen 16 mit dem Oszillationsantrieb 6 verbunden.The upper end of the support frame 5 is about an axis parallel to the cutting wires 4 11 pivotally suspended in suspension recesses 12 of an auxiliary support structure 13 and held at its lower end by means of a releasable pressing device 14 against abutments 15 on the auxiliary support structure 13. The free lower ends of the support rods 3 are connected to the oscillation drive 6 via radial plug-in couplings 16.

Der Tragrahmen 5 ist mit seitlichen Zapfen 17 in die Einhängeausnehmungen 12 eingehängt und ebenso wie die Hilfstragkonstruktion 13 als U-Rahmen mit oberer Traverse ausgebildet. Eine untere Traverse fehlt, weil sich an der entsprechenden Stelle andere Maschinenteile befinden, wie beispielsweise ein Transportband für den Schaumkunststoffkörper 1. Jedenfalls ist die Hilfstragkonstruktion 13 als Teil des Maschinengestells dargestellt; sie könnte aber auch, wie oben schon einmal angedeutet worden ist, auf einem im Maschinengestell verfahrbaren Wagen angeordnet sein. Die den Tragrahmen 5 in Position haltenden Widerlager 15 bestehen aus Kugelkalottenausnehmungen 18 an der Hilfstragkonstruktion 13, in die bei betätigter Anpreßeinrichtung 14 entsprechend geformte Kugelkalottenvorsprünge 10 am Tragrahmen 5 eingreifen. Nicht dargestellt ist, daß die Stromanschlüsse für die elektrisch beheizbaren Schneiddrähte 4 aus entgegen der Anpreßeinrichtung 14 federbelasteten Kohlebürsten für die Halterungsstäbe 3 bestehen, welche Kohlebürsten somit beim Betätigen der Anpreßeinrichtung 14 einen selbsttätigen Stromanschluß besorgen.The support frame 5 is suspended with lateral pins 17 in the suspension recesses 12 and, like the auxiliary support structure 13, is designed as a U-frame with an upper cross member. A lower crossbeam is missing because there are other machine parts at the corresponding location, such as a conveyor belt for the foam plastic body 1. In any case, the auxiliary support structure 13 is shown as part of the machine frame; however, as has already been indicated above, it could also be arranged on a carriage which can be moved in the machine frame. The abutment 15 holding the support frame 5 in position consists of spherical cap recesses 18 on the auxiliary support structure 13, into which correspondingly shaped spherical cap projections 10 on the support frame 5 engage when the pressing device 14 is actuated. It is not shown that the power connections for the electrically heatable cutting wires 4 consist of carbon brushes, which are spring-loaded against the pressing device 14, for the mounting rods 3, which carbon brushes thus provide an automatic power connection when the pressing device 14 is actuated.

Fig. 1 entnimmt man, daß der Tragrahmen 5 nach Lösen der Anpreßeinrichtung 14 mit Hilfe einer Hubeinrichtung 20, die mit einem Tragrahmenmagazin zusammenarbeiten kann, von der Hilfstragkonstruktion 13 entfernbar ist. Hierbei wird der Tragrahmen 5 mit unteren seitlichen Zapfen 21 auf Schrägführungen 22 der Hilfstragkonstruktion 13 geführt. Diese Schrägführungen 22 tragen beim Einführen eines anderen Tragrahmens 5 auch dafür Sorge, daß letzterer in die zutreffende Stellung gelangt. Die Anpreßeinrichtung 14 besteht aus zwei den Enden des Tragrahmens 5 zugeordneten Pneumatikzylinderkolbenanordnungen. Auch die Hubeinrichtung 20 kann aus einer solchen Pneumatikzylinderkolbenanordnung bestehen. Fig. 2 zeigt, wie die radialen Steckkupplungen 16 ausgebildet sind; sie weisen in Längsrichtung der Halterungsstäbe 3 gesehen trapezförmige Kupplungshälften auf, die sich in Anpreßrichtung verjüngen.1 shows that the support frame 5 can be removed from the auxiliary support structure 13 after the pressing device 14 has been loosened with the aid of a lifting device 20, which can cooperate with a support frame magazine. Here, the support frame 5 is guided with lower lateral pins 21 on inclined guides 22 of the auxiliary support structure 13. When inserting another support frame 5, these oblique guides 22 also ensure that the latter comes into the correct position. The pressing device 14 consists of two pneumatic cylinder piston assemblies assigned to the ends of the support frame 5. The lifting device 20 can also consist of such a pneumatic cylinder piston arrangement. Fig. 2 shows how the radial plug-in couplings 16 are designed; seen in the longitudinal direction of the support rods 3, they have trapezoidal coupling halves which taper in the pressing direction.

Claims (8)

1. Equipment for cutting up a block of foamed plastics or the like, with a cutting-wire system the wires (4) of which, essentially parallel to one another, are eccentrically fastened by their ends to at least two holding rods (3) that are arranged with a spacing from one another, are parallel to one another, and extend transversely to the cutting wires (4), are rotatably supported in the region of their ends in a supporting frame (5) constructed as a U-frame with upper cross-bar and embracing the block of foamed plastics, and are swingable to and fro about their longitudinal axes by means of an oscillation drive (6) linked to the lower ends of the holding rods (3), characterised in that the supporting frame (5) is suspended at its upper end by transverse pegs (17) in suspension recesses (12) of an auxiliary supporting construction (13) so that it is swingable about an axis (11) parallel to the cutting wires (4), and at its lower end is held by means of a releasable compression device (14) against retaining abutments (15) on the auxiliary supporting construction (13), in which the auxiliary supporting construction (13) is constructed as a U-frame with an upper cross-bar, and the free lower ends of the holding rods (3) are connected via radial plug-in couplings (16) to the oscillation drive (6).
2. Equipment according to Claim 1, characterised in that the auxiliary supporting construction (13) is part of the machine frame.
3. Equipment according to Claim 1 or 2, characterised in that the retaining abutments (15) consist of spherical segment recesses (18) for correspondingly-shaped spherical segment projections (19) on the supporting frame (5).
4. Equipment according to one of Claims 1 to 3, characterised in that the current connections for the electrically-heatable cutting wires (4) consist of carbon brushes for the holding rods (3), springloaded against the compression device (14).
5. Equipment according to one of Claims 1 to 4, characterised in that the supporting frame (5), after release of compression device (14), is removable from the auxiliary supporting construction (13) by means of a lifting device (20).
6. Equipment according to Claim 5, characterised in that the supporting frame, when lifted by the lifting device (20), is guided by lower transverse pegs (21) along sloping guideways (22) of the auxiliary supporting construction (13).
7. Equipment according to one of Claims 1 to 6, characterised in that the compression device (14) and the lifting device (20) consist of pneumatic piston-cylinder mechanisms.
8. Equipment according to one of Claims 1 to 7, characterised in that the radial plug-in couplings (16) possess halves of the coupling that are of trapezium shape when viewed in the direction of length of the holding rods (3) and taper in the direction of compression.
EP84116463A 1984-01-20 1984-12-28 Device for cutting foamed plastic Expired EP0149854B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3401869A DE3401869C1 (en) 1984-01-20 1984-01-20 Device for cutting a foam body or the like
DE3401869 1984-01-20

Publications (3)

Publication Number Publication Date
EP0149854A2 EP0149854A2 (en) 1985-07-31
EP0149854A3 EP0149854A3 (en) 1986-04-30
EP0149854B1 true EP0149854B1 (en) 1989-06-14

Family

ID=6225439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84116463A Expired EP0149854B1 (en) 1984-01-20 1984-12-28 Device for cutting foamed plastic

Country Status (3)

Country Link
US (1) US4574677A (en)
EP (1) EP0149854B1 (en)
DE (1) DE3401869C1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700271A (en) * 1987-02-04 1988-09-01 Durox Gasbeton Bv METHOD AND APPARATUS FOR CUTTING GAS CONCRETE.
US4850844A (en) * 1987-09-11 1989-07-25 Hunting William E Apparatus for making tapered plastic shingles
GB8917324D0 (en) * 1989-07-28 1989-09-13 A Foam Co Ltd Improvements in shaping bodies
EP3135593B1 (en) * 2012-03-23 2019-02-20 C.G. Bretting Manufacturing Company, Inc. High speed small pack wrapper
SE539954C2 (en) 2014-07-08 2018-02-13 Grade Group As Cutting device
CN106142223B (en) * 2016-08-17 2018-12-25 重庆市盛塑包装制品有限公司 foam cutting machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1841144A (en) * 1929-09-12 1932-01-12 Franz K Krag Knife construction for bread slicing machines
US2101002A (en) * 1936-12-10 1937-11-30 American Mach & Foundry Mounting for slicer blades
US2430160A (en) * 1944-05-15 1947-11-04 Bush Ag Reciprocating endless band knife bread-slicing machine
US2479908A (en) * 1946-09-25 1949-08-23 Bush Ag Reciprocating bread slicing machine
AU7815375A (en) * 1974-02-27 1976-08-12 Treffner P Method and apparatus for cutting plastics materials
AU4306579A (en) * 1978-01-09 1979-07-19 Charles Treffner Multi-bladed cutting apparatus

Also Published As

Publication number Publication date
US4574677A (en) 1986-03-11
DE3401869C1 (en) 1985-03-14
EP0149854A2 (en) 1985-07-31
EP0149854A3 (en) 1986-04-30

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