EP1986828A1 - Separating device for cutting profiled plastic elements - Google Patents

Separating device for cutting profiled plastic elements

Info

Publication number
EP1986828A1
EP1986828A1 EP07703112A EP07703112A EP1986828A1 EP 1986828 A1 EP1986828 A1 EP 1986828A1 EP 07703112 A EP07703112 A EP 07703112A EP 07703112 A EP07703112 A EP 07703112A EP 1986828 A1 EP1986828 A1 EP 1986828A1
Authority
EP
European Patent Office
Prior art keywords
separating
knife
heating
temperature sensor
separating device
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.)
Granted
Application number
EP07703112A
Other languages
German (de)
French (fr)
Other versions
EP1986828B1 (en
Inventor
Jörg Gräbener
Jörg HILBERS
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP1986828A1 publication Critical patent/EP1986828A1/en
Application granted granted Critical
Publication of EP1986828B1 publication Critical patent/EP1986828B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating
    • 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
    • B26D1/04—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 linearly-movable cutting member
    • B26D1/06—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 linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08—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 linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely
    • B26D3/167—Cutting tubes having a non-circular cross-section

Definitions

  • the invention relates to a separating device for cutting plastic profiles according to the preamble of claim 1.
  • the invention further relates to a separating device for cutting plastic profiles according to the preamble of claim 6.
  • a heater according to claim 2 can be easily constructed, since in particular no provision must be made for a movable supply of the heater.
  • the heating induction coil to the work table can also be driven driven, if necessary, for example, to avoid a collision between the induction coil and the cutting knife, should be required.
  • An adjusting device allows optimal alignment of the induction coil to be heated separating knife. The latter is thus heated exactly where this is necessary for optimal cutting.
  • An induction coil according to claim 4 ensures an energy-efficient blade heater.
  • a heating control according to claim 5 allows adaptation of the induction heating to changing operating conditions of the separator, z. B. to changing cutting blades or to be cut off various plastic materials or profile geometries.
  • Another object of the invention is to develop a separating device according to the preamble of claim 6 such that an increased cutting performance results.
  • the temperature sensor allows an objective control of the operation of the separator. Deviations of the blade temperature from default values can be detected in this way and corrected if necessary.
  • a calibration and also a monitoring of the energy source on the basis of the measured values of the temperature sensor is ensured.
  • a separator according to claim 8 enables an automated calibration or monitoring of the energy source and thus the blade heater based on the temperature data detected by the temperature sensor.
  • An arrangement of the temperature sensor according to claim 9 ensures an unadulterated temperature measurement.
  • An arrangement of the temperature sensor according to claim 10 prevents a falsification of the measurement result by a deposit formation on the knife due to the cutting process.
  • An infrared detector according to claim 11 ensures a non-contact temperature measurement.
  • the infrared detector can also be designed as a thermal imaging camera, thus also providing information on the spatial temperature distribution on the separating knife.
  • An alternative temperature sensor according to claim 12 can be realized inexpensively.
  • a temperature sensor according to claim 13 allows a fine monitoring of the thermal behavior of the cutting blade. Corresponding temporally resolved measurement results can be used for a corresponding temporal heating control. So it is z. B. possible to perform the control of the heater via the heating control synchronized to the separation cycle. As an alternative to detecting the separation knife temperature several times during a separation cycle, a continuous measurement of the temperature by the temperature sensor is possible.
  • a regional temperature detection according to claim 14 provides further detail information on the thermal behavior of the blade. Based on this information, the separating knife z. B. be optimized in terms of its shape or strength. In addition, it is possible to carry out a corresponding spatially selective heating of the blade on the basis of the spatial information.
  • the spatially selective detection can be realized by a plurality of individual detectors or, in the case of areal detection, by a plurality of detection areas.
  • Fig. 1 is a side view of a cut adjacent to a knife plane
  • Fig. 2 is a partially sectioned side view according to line of sight Il in Fig. 1st
  • a generally designated 1 separating device is used to cut to length plastic profiles, which were produced in particular by extrusion.
  • the plastic profiles to be cut are conveyed on a worktable 2 along a conveying direction 2a (see Fig. 2).
  • Guide rails are used before and after a separating station 3 of the separating device 1, of which the guide rail 4 (see Fig. 2) is representative of the guidance of the plastic profiles to be shortened or cut to length.
  • the separation station 3 is constructed in the manner of a guillotine.
  • a metallic cutting knife 5 with respect to a table plane 6 of the work table 2 obliquely extending cutting edge 7 is clamped between knife tensioner 8, 9.
  • the knife tensioners 8, 9 are fixed by fastening screws on a knife holder 10.
  • the fair holder 10 is, driven on two guide rods 11, 12, driven in the manner of a guillotine between a rest position shown in the drawing and one of these opposite to shifted separating position displaced.
  • the metallic separating knife 5 is heated in the region of a cutting surface 13, that is, between the two knife spars 8, 9.
  • the latter comprises an induction coil 15, which is the cutting surface 13 adjacent, but not touching, arranged.
  • the induction coil 15 has a power supply connection 16 for connection to an electrical supply unit 18 and a control connection 17 for connection to a schematically illustrated heating control 19.
  • the induction coil 15 is attached to a bracket 20.
  • an insulating plate 21 for heat insulation of the induction coil 15 is arranged.
  • the bracket 20 is bolted to a horizontally extending guide rod 22.
  • the latter is part of an adjusting device 23 for adjusting the induction coil 15 relative to the work table 2.
  • the guide rod 22 is fixed to a base 24 of the heater 14, which in turn is adjustable relative to the work table 2 via guide rails 25.
  • the induction coil 15 can be adjusted in its spatial position relative to the cutting blade 5 so that a desired portion of the cutting surface 13 can be heated by the induction coil 15.
  • the latter is arranged fixedly to the work table 2, that is, it does not participate in the displacement of the separating knife 5 between the rest position and the separating position.
  • the heating of the cutting surface 13 via the induction coil 15 takes place in the rest position of the separating knife 5.
  • the induction coil 15 has a heat transfer surface 26 whose geometry is adapted to the geometry of the cut surface 13 to be honed, that is, to the geometry of the cutting blade 5. Adjacent to the separating blade 5, the heat transfer surface 26 thus has a geometry corresponding to the cutting surface 13.
  • a temperature sensor 27 For detecting the temperature of the separating knife 5 is a temperature sensor 27.
  • the latter is designed as a non-contact measuring infrared detector.
  • the temperature sensor 27 is arranged adjacent to a section of the cut surface 13 which does not come into contact with the plastic profile to be cut during cutting. Such sections of the cut surface 13 are in particular adjacent to the blade tensioners 8, 9.
  • Via a sensor holder 28, the temperature sensor 27 is fixed to the knife holder 10.
  • the temperature sensor 27 is thus arranged fixed to the knife.
  • the temperature sensor with the heater control 19 is in signal communication.
  • the latter is connected to the electrical supply unit 18 in a manner not shown in signal connection.
  • the temperature sensor is thus at least temporarily in signal connection with the, an energy source for the induction coil 15 representing, electrical supply unit 18.
  • the temperature sensor is designed as a contact sensor.
  • the temperature sensor is arranged in a receptacle of the separating knife 5 or in a receptacle of a component which is in good thermal contact with the separating knife 5.
  • a component may, for example, be one of the knife tensioners 8, 9 or a section of the knife holder 10 adjacent to the separating knife 5.
  • the separation device 1 is prepared for its operation and then operated as follows: First, using the temperature sensor 27, a calibration of the heating of the separating blade 5 by the induction coil 15. The aim of this calibration is about a separation cycle of the separation device 1, ie over the period from Beginning of a separating cut to the beginning, after a corresponding advance of the plastic profile to be cut, the next separating cut, a given temporal and possibly also spatial course of the blade temperature in the region of the cut surface 13.
  • the knife temperature is maintained at +/- 5 0 C, preferably at +/- 3 0 C, exactly at a temperature between 120 and 200 0 C. When cutting while the cutting surface 13 is to maintain a predetermined cutting temperature within this tolerance.
  • the endless plastic profile along the conveying direction 2a is advanced by means of a conveyor drive, not shown.
  • a typical feed rate is 15 m / min.
  • the separating station 3 is conveyed synchronously with this profile feed in the conveying direction 2a.
  • the heating station 14 is not moved with the feed, but remains stationary.
  • the separating knife 5 is at least 5 s, preferably 10 s, heated, so that the required temperature stability is ensured.
  • synchronized advancing the cutting blade 5 moves away from the induction coil 15 in the conveying direction 2a. From the release of the severing blade 5 from the induction coil 15 to the actual separating cut, typically 2 to 3 seconds pass, so that no appreciable temperature drop of the separating blade 5 takes place.
  • a control of the electrical supply unit 18 synchronized in time with the disconnection cycle by the heating control 19 can be carried out on the basis of corresponding default values as a result of the calibration.
  • the temperature of the cut surface 13 can be monitored at random by means of the temperature sensor 27 during selected separation cycles.
  • drift effects such. B. by a plastic coating on the cut surface 13, detected and corrected by appropriate signals to the heater control 19.
  • Such drift effects by plastic coating formation as measurements have shown by the Applicant, lead to an undesirable drop in the actual knife temperature up to 30 ° C.
  • the temperature sensor 27 can detect the separation knife temperature several times during the separation cycle. Alternatively, it is possible to continuously measure the severing blade temperature.
  • the temperature sensor may be formed in a variant, not shown, so that it detects the Trennmessertemperatur separately in multiple Trennmesser Symposiumen.
  • the temperature sensor can have a plurality of spatially distributed individual detectors or, in the case of a two-dimensional detection, several detection ranges.
  • the temperature sensor z. B. be designed as a thermal imaging camera with a two-dimensional detection area, are evaluated separately at the different detection areas.

Abstract

In separating apparatus (1) for cutting plastics profiles to length, having a work table (2) over which the profile is guided, a metallic separating blade (5) movable relative to the table, a heater (14) for the blade and an energy source (18) for the heater, the heater comprises an induction heating coil (15) spaced from the blade and the energy source consists of an electrical unit for supplying potential to the coil. An independent claim is included for a variant of the separating device, comprising a driven separating blade (5), a heater (14) for the blade and an energy source (18) for the heater, where a temperature sensor (27) is included for determining the blade temperature.

Description

Trennvorrichtung zum Ablängen von Kunststoffprofilen Separating device for cutting plastic profiles
Die Erfindung betrifft eine Trennvorrichtung zum Ablängen von Kunststoffprofilen nach dem Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung eine Trennvorrichtung zum Ablängen von Kunststoffprofilen nach dem Oberbegriff des Anspruchs 6.The invention relates to a separating device for cutting plastic profiles according to the preamble of claim 1. The invention further relates to a separating device for cutting plastic profiles according to the preamble of claim 6.
Derartige Trennvorrichtungen sind durch offenkundige Vorbenutzung bekannt. Die Schneidleistung der bekannten Trennvorrichtungen ist für anspruchsvolle Anwendungen zu niedrig.Such separation devices are known by public prior use. The cutting performance of known separators is too low for demanding applications.
Es ist daher eine Aufgabe der vorliegenden Erfindung, eine Trennvorrichtung nach dem Oberbegriff des Anspruchs 1 derart weiterzubilden, dass eine erhöhte Schneidleistung resultiert.It is therefore an object of the present invention to develop a separating device according to the preamble of claim 1 such that an increased cutting performance results.
Diese Aufgabe ist erfindungsgemäß gelöst durch eine Trennvorrichtung mit den im Kennzeichnungsteil des Anspruchs 1 genannten Merkmalen.This object is achieved by a separation device with the features mentioned in the characterizing part of claim 1.
Bei den bekannten Trennvorrichtungen erfolgte eine Messerbeheizung durch Strahlung bzw. Konvektion. Erfindungsgemäß wird hingegen über Induktion beheizt. Hierfür ist also kein Wärmeübertragungsmedium notwendig, wie dies bei der Konvektionsheizung der Fall ist. Die elektrische Energie wird dem Trennmesser durch ein Magnetfeld übertragen. Der durch die Induktionsspule fließende Wechselstrom erzeugt ein magnetisches Wechselfeld, welches im Messer einen bestimmten Strom zur Folge hat. Die über die Induktionsspule zugeführte elektrische Energie wird daher zunächst in magnetische Energie und diese dann im Messer als Wärme umgewandelt. Aufgrund des Skineffekts ist die Stromdichte an der Messeroberfläche, also dort, wo die Beheizung des Messers erwünscht ist, am größten. Es wird also insbesondere auch eine von der Induktionsspule abgewandte Messerrückseite beheizt, was zum Erzeugen eines sauberen Schnitts wesentlich sein kann. Im Inneren des Trennmessers erfolgt hingegen, da hier praktisch kein Strom mehr fließt, keine induktive Erwärmung. Induktiv wird also die Wärme dort erzeugt, wo sie zum Schneiden benötigt wird. Ein so optimiert beheiztes Messer führt zu einer Trennvorrichtung mit erhöhter Schneidleistung. Die Messertemperatur wird dabei durch die Heizeinrichtung auf der optimalen Schneidtemperatur gehalten. Letztere liegt je nach zu schneidendem Kunststoff material zwischen 120 und 200 0C. Die optimale Schneidtemperatur kann mit der Heizeinrichtung innerhalb eines Toleranzbereichs von +/- 5 0C, bevorzugt von +/- 3 CC, gehalten werden.In the known separation devices was a knife heating by radiation or convection. According to the invention, however, is heated by induction. For this reason, no heat transfer medium is necessary, as is the case with convection heating. The electrical energy is transmitted to the separating knife by a magnetic field. The alternating current flowing through the induction coil generates a magnetic alternating field, which results in a certain current in the knife. The electrical energy supplied via the induction coil is therefore first converted into magnetic energy and this then in the knife as heat. Due to the skin effect, the current density at the knife surface, ie where the heating of the knife is desired, is the greatest. Thus, in particular, a knife rear side facing away from the induction coil is also heated, which may be essential for producing a clean cut. On the other hand, no inductive heating takes place in the interior of the separating knife, since virtually no current flows here. Inductive, therefore, the heat is generated where it is needed for cutting. An optimally heated knife leads to a cutting device with increased cutting performance. The knife temperature is kept at the optimum cutting temperature by the heater. The latter is depending on the plastic material to be cut between 120 and 200 0 C. The optimum cutting temperature can be maintained with the heater within a tolerance range of +/- 5 0 C, preferably of +/- 3 C C.
Eine Heizeinrichtung nach Anspruch 2 lässt sich einfach aufbauen, da insbesondere keine Vorkehrungen für eine bewegliche Versorgung der Heizeinrichtung getroffen werden müssen. Alternativ kann die Heiz-Induktionsspule zum Arbeitstisch auch angetrieben verlagerbar sein, falls dies, zum Beispiel zur Vermeidung einer Kollision zwischen der Induktionsspule und dem Trennmesser, erforderlich sein sollte.A heater according to claim 2 can be easily constructed, since in particular no provision must be made for a movable supply of the heater. Alternatively, the heating induction coil to the work table can also be driven driven, if necessary, for example, to avoid a collision between the induction coil and the cutting knife, should be required.
Eine Verstelleinrichtung nach Anspruch 3 ermöglicht eine optimale Ausrichtung der Induktionsspule zum zu beheizenden Trennmesser. Letzteres wird also genau dort beheizt, wo dies zum optimalen Schneiden erforderlich ist.An adjusting device according to claim 3 allows optimal alignment of the induction coil to be heated separating knife. The latter is thus heated exactly where this is necessary for optimal cutting.
Eine Induktionsspule nach Anspruch 4 gewährleistet eine energieeffiziente Messerheizung.An induction coil according to claim 4 ensures an energy-efficient blade heater.
Eine Heizungssteuerung nach Anspruch 5 ermöglicht eine Anpassung der Induktionsheizung an sich ändernde Betriebsbedingungen der Trennvorrichtung, z. B. an wechselnde Trennmesser oder an verschiedene abzulängende Kunststoffmaterialien bzw. Profilgeometrien.A heating control according to claim 5 allows adaptation of the induction heating to changing operating conditions of the separator, z. B. to changing cutting blades or to be cut off various plastic materials or profile geometries.
Eine weitere Aufgabe der Erfindung ist es, eine Trennvorrichtung nach dem Oberbegriff des Anspruchs 6 derart weiterzubilden, dass eine erhöhte Schneidleistung resultiert.Another object of the invention is to develop a separating device according to the preamble of claim 6 such that an increased cutting performance results.
Diese Aufgabe ist erfindungsgemäß gelöst durch eine Trennvorrichtung mit den im Kennzeichnungsteil des Anspruchs 6 angegebenen Merkmalen.This object is achieved by a separation device with the features specified in the characterizing part of claim 6.
Erfindungsgemäß wurde erkannt, dass es in vielen Fällen nicht ausreicht, die Heizeinrichtung alleine aufgrund von Erfahrungswerten anzusteuern. Der Temperatursensor ermöglicht eine objektive Kontrolle des Betriebs der Trennvorrichtung. Abweichungen der Messertemperatur von Vorgabewerten können auf diese Weise erfasst und gegebenenfalls korrigiert werden. Bei einer Trennvorrichtung nach Anspruch 7 ist eine Kalibrierung und auch eine Überwachung der Energiequelle auf Basis der Messwerte des Temperatursensors gewährleistet.According to the invention, it has been recognized that in many cases it is not sufficient to control the heating device on the basis of empirical values alone. The temperature sensor allows an objective control of the operation of the separator. Deviations of the blade temperature from default values can be detected in this way and corrected if necessary. In a separating device according to claim 7, a calibration and also a monitoring of the energy source on the basis of the measured values of the temperature sensor is ensured.
Eine Trennvorrichtung nach Anspruch 8 ermöglicht eine automatisierte Kalibrierung bzw. Überwachung der Energiequelle und damit der Messerheizung auf Grundlage der vom Temperatursensor erfassten Temperaturdaten.A separator according to claim 8 enables an automated calibration or monitoring of the energy source and thus the blade heater based on the temperature data detected by the temperature sensor.
Eine Anordnung des Temperatursensors nach Anspruch 9 gewährleistet eine unverfälschte Temperaturmessung.An arrangement of the temperature sensor according to claim 9 ensures an unadulterated temperature measurement.
Eine Anordnung des Temperatursensors nach Anspruch 10 verhindert eine Verfälschung des Messergebnisses durch eine Belagbildung auf dem Messer aufgrund des Schneidvorgangs.An arrangement of the temperature sensor according to claim 10 prevents a falsification of the measurement result by a deposit formation on the knife due to the cutting process.
Ein Infrarot-Detektor nach Anspruch 11 gewährleistet eine berührungslose Temperaturmessung. Der Infrarot-Detektor kann insbesondere auch als Wärmebildkamera ausgeführt sein, und so auch Informationen zur räumlichen Temperaturverteilung auf dem Trennmesser liefern.An infrared detector according to claim 11 ensures a non-contact temperature measurement. In particular, the infrared detector can also be designed as a thermal imaging camera, thus also providing information on the spatial temperature distribution on the separating knife.
Ein alternativer Temperatursensor nach Anspruch 12 lässt sich kostengünstig realisieren.An alternative temperature sensor according to claim 12 can be realized inexpensively.
Ein Temperatursensor nach Anspruch 13 erlaubt eine feine Überwachung des thermischen Verhaltens des Trennmessers. Entsprechende zeitlich aufgelöste Messergebnisse können für eine entsprechende zeitliche Heizungssteuerung herangezogen werden. So ist es z. B. möglich, die Ansteuerung der Heizeinrichtung über die Heizungssteuerung synchronisiert zum Trennzyklus durchzuführen. Alternativ zur Erfassung der Trennmessertemperatur mehrmals während eines Trennzyklus ist auch ein kontinuierliches Messen der Temperatur durch den Temperatursensor möglich.A temperature sensor according to claim 13 allows a fine monitoring of the thermal behavior of the cutting blade. Corresponding temporally resolved measurement results can be used for a corresponding temporal heating control. So it is z. B. possible to perform the control of the heater via the heating control synchronized to the separation cycle. As an alternative to detecting the separation knife temperature several times during a separation cycle, a continuous measurement of the temperature by the temperature sensor is possible.
Eine bereichsweise Temperaturerfassung nach Anspruch 14 liefert weitere Detailinformationen zum thermischen Verhalten des Messers. Auf Grundlage dieser Informationen kann das Trennmesser z. B. hinsichtlich seiner Form oder Stärke optimiert werden. Zudem ist es möglich, auf Basis der räumlichen Informationen eine entsprechende, räumlich selektive Beheizung des Messers vorzunehmen. Die räumlich selektive Erfassung kann durch mehrere Einzeldetektoren oder, bei flächiger Erfassung, durch mehrere Erfassungsbereiche realisiert werden.A regional temperature detection according to claim 14 provides further detail information on the thermal behavior of the blade. Based on this information, the separating knife z. B. be optimized in terms of its shape or strength. In addition, it is possible to carry out a corresponding spatially selective heating of the blade on the basis of the spatial information. The spatially selective detection can be realized by a plurality of individual detectors or, in the case of areal detection, by a plurality of detection areas.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:An embodiment of the invention will be explained in more detail with reference to the drawing. In this show:
Fig. 1 eine benachbart zu einer Messerebene geschnittene Seitenansicht einerFig. 1 is a side view of a cut adjacent to a knife plane
Trennvorrichtung zum Ablängen von Kunststoffprofilen, wobei die Zeichenebene parallel zu einer Messebene der Trennvorrichtung liegt;Separating device for cutting plastic profiles, wherein the plane of the drawing is parallel to a measuring plane of the separating device;
Fig. 2 eine teilweise geschnittene Seitenansicht gemäß Sichtlinie Il in Fig. 1.Fig. 2 is a partially sectioned side view according to line of sight Il in Fig. 1st
Eine insgesamt mit 1 bezeichnete Trennvorrichtung dient zum Ablängen von Endlos- Kunststoffprofilen, die insbesondere durch Extrusion erzeugt wurden. Die abzulängenden Kunststoffprofile werden auf einem Arbeitstisch 2 längs einer Förderrichtung 2a (vgl. Fig. 2) gefördert. Zur Führung der abzulängenden bzw. abgelängten Kunststoffprofile dienen Führungsschienen vor und nach einer Trennstation 3 der Trennvorrichtung 1 , von denen stellvertretend die Führungsschiene 4 (vgl. Fig. 2) dargestellt ist.A generally designated 1 separating device is used to cut to length plastic profiles, which were produced in particular by extrusion. The plastic profiles to be cut are conveyed on a worktable 2 along a conveying direction 2a (see Fig. 2). Guide rails are used before and after a separating station 3 of the separating device 1, of which the guide rail 4 (see Fig. 2) is representative of the guidance of the plastic profiles to be shortened or cut to length.
Die Trennstation 3 ist nach Art einer Guillotine aufgebaut. Ein metallisches Trennmesser 5 mit gegenüber einer Tischebene 6 des Arbeitstisches 2 schräg verlaufender Schneidkante 7 ist zwischen Messerspanner 8, 9 eingespannt. Die Messerspanner 8, 9 sind über Befestigungsschrauben an einem Messerhalter 10 festgelegt. Der Messehalter 10 ist, geführt an zwei Führungsstangen 11 , 12, nach Art einer Guillotine zwischen einer in der Zeichnung dargestellten Ruheposition und einer dieser gegenüber nach unten verlagerten Trennposition angetrieben verlagerbar.The separation station 3 is constructed in the manner of a guillotine. A metallic cutting knife 5 with respect to a table plane 6 of the work table 2 obliquely extending cutting edge 7 is clamped between knife tensioner 8, 9. The knife tensioners 8, 9 are fixed by fastening screws on a knife holder 10. The fair holder 10 is, driven on two guide rods 11, 12, driven in the manner of a guillotine between a rest position shown in the drawing and one of these opposite to shifted separating position displaced.
Beim Betrieb der Trennvorrichtung 1 wird das metallische Trennmesser 5 im Bereich einer Schnittfläche 13, also zwischen den beiden Messerspannern 8, 9, beheizt. Hierzu dient eine insgesamt mit 14 bezeichnete Heizeinrichtung. Letztere umfasst eine Induktionsspule 15, die der Schnittfläche 13 benachbart, diese aber nicht berührend, angeordnet ist. Die Induktionsspule 15 hat einen Stromversorgungsanschluss 16 zum Anschluss an eine elektrische Versorgungseinheit 18 und einen Steuerungsanschluss 17 zum Anschluss an eine schematisch dargestellte Heizungssteuerung 19. Über Befestigungsschrauben ist die Induktionsspule 15 an einem Haltewinkel 20 angebracht. Zwischen dem Haltewinkel 20 und der Induktionsspule 15 ist eine Isolierplatte 21 zur Wärmeisolation der Induktionsspule 15 angeordnet. Der Haltewinkel 20 ist mit einer horizontal verlaufenden Führungsstange 22 verschraubt. Letztere ist Teil einer Verstelleinrichtung 23 zur Verstellung der Induktionsspule 15 relativ zum Arbeitstisch 2. Zur Ermöglichung weiterer Verstell-Freiheitsgrade ist die Führungsstange 22 an einem Grundkörper 24 der Heizeinrichtung 14 festgelegt, welcher wiederum gegenüber dem Arbeitstisch 2 über Führungsschienen 25 verstellbar ist. Mit der Verstelleinrichtung 23 kann die Induktionsspule 15 in ihrer räumlichen Position relativ zum Trennmesser 5 so einjustiert werden, dass ein gewünschter Abschnitt der Schnittfläche 13 durch die Induktionsspule 15 beheizt werden kann. In der so einjustierten Betriebsposition der Induktionsspule 15 ist Letztere fest zum Arbeitstisch 2 angeordnet, macht also die Verlagerung des Trennmessers 5 zwischen der Ruheposition und der Trennposition nicht mit. Das Beheizen der Schnittfläche 13 über die Induktionsspule 15 erfolgt in der Ruheposition des Trennmessers 5.During operation of the separating device 1, the metallic separating knife 5 is heated in the region of a cutting surface 13, that is, between the two knife spars 8, 9. This purpose is served by a heater designated as a whole by 14. The latter comprises an induction coil 15, which is the cutting surface 13 adjacent, but not touching, arranged. The induction coil 15 has a power supply connection 16 for connection to an electrical supply unit 18 and a control connection 17 for connection to a schematically illustrated heating control 19. About fastening screws, the induction coil 15 is attached to a bracket 20. Between the bracket 20 and the induction coil 15, an insulating plate 21 for heat insulation of the induction coil 15 is arranged. The bracket 20 is bolted to a horizontally extending guide rod 22. The latter is part of an adjusting device 23 for adjusting the induction coil 15 relative to the work table 2. To enable further adjustment degrees of freedom, the guide rod 22 is fixed to a base 24 of the heater 14, which in turn is adjustable relative to the work table 2 via guide rails 25. With the adjusting device 23, the induction coil 15 can be adjusted in its spatial position relative to the cutting blade 5 so that a desired portion of the cutting surface 13 can be heated by the induction coil 15. In the thus adjusted operating position of the induction coil 15, the latter is arranged fixedly to the work table 2, that is, it does not participate in the displacement of the separating knife 5 between the rest position and the separating position. The heating of the cutting surface 13 via the induction coil 15 takes place in the rest position of the separating knife 5.
Die Induktionsspule 15 hat eine Wärmübertragungsfläche 26, deren Geometrie an die Geometrie der zu beizenden Schnittfläche 13, also an die Geometrie des Trennmessers 5, angepasst ist. Benachbart zum Trennmesser 5 hat die Wärmeübertragungsfläche 26 also eine der Schnittfläche 13 entsprechende Geometrie.The induction coil 15 has a heat transfer surface 26 whose geometry is adapted to the geometry of the cut surface 13 to be honed, that is, to the geometry of the cutting blade 5. Adjacent to the separating blade 5, the heat transfer surface 26 thus has a geometry corresponding to the cutting surface 13.
Zur Erfassung der Temperatur des Trennmessers 5 dient ein Temperatursensor 27. Letzterer ist als berührungslos messender Infrarot-Detektor ausgebildet. Der Temperatursensor 27 ist einem Abschnitt der Schnittfläche 13 benachbart angeordnet, welcher beim Schneiden nicht mit dem abzulängenden Kunststoffprofil in Kontakt kommt. Derartige Abschnitte der Schnittfläche 13 liegen insbesondere benachbart zu den Messerspannern 8, 9 vor. Über einen Sensorhalter 28 ist der Temperatursensor 27 am Messerhalter 10 festgelegt. Der Temperatursensor 27 ist also messerfest angeordnet. Über eine nicht dargestellte Signalverbindung steht der Temperatursensor mit der Heizungssteuerung 19 in Signalverbindung. Letztere steht mit der elektrischen Versorgungseinheit 18 in ebenfalls nicht dargestellter Weise in Signalverbindung. Der Temperatursensor steht also mit der, eine Energiequelle für die Induktionsspule 15 darstellenden, elektrischen Versorgungseinheit 18 zumindest zeitweilig in Signalverbindung. Bei einer nicht dargestellten Variante ist der Temperatursensor als Kontaktsensor ausgebildet. In diesem Falle ist der Temperatursensor in einer Aufnahme des Trennmessers 5 oder in einer Aufnahme einer Komponente, die mit dem Trennmesser 5 in gutem Wärmekontakt steht, angeordnet. Bei einer derartigen Komponente kann es sich beispielsweise um einen der Messerspanner 8, 9 oder um einen dem Trennmesser 5 benachbarten Abschnitt des Messerhalters 10 handeln.For detecting the temperature of the separating knife 5 is a temperature sensor 27. The latter is designed as a non-contact measuring infrared detector. The temperature sensor 27 is arranged adjacent to a section of the cut surface 13 which does not come into contact with the plastic profile to be cut during cutting. Such sections of the cut surface 13 are in particular adjacent to the blade tensioners 8, 9. Via a sensor holder 28, the temperature sensor 27 is fixed to the knife holder 10. The temperature sensor 27 is thus arranged fixed to the knife. About a signal connection, not shown, the temperature sensor with the heater control 19 is in signal communication. The latter is connected to the electrical supply unit 18 in a manner not shown in signal connection. The temperature sensor is thus at least temporarily in signal connection with the, an energy source for the induction coil 15 representing, electrical supply unit 18. In a variant, not shown, the temperature sensor is designed as a contact sensor. In this case, the temperature sensor is arranged in a receptacle of the separating knife 5 or in a receptacle of a component which is in good thermal contact with the separating knife 5. Such a component may, for example, be one of the knife tensioners 8, 9 or a section of the knife holder 10 adjacent to the separating knife 5.
Die Trennvorrichtung 1 wird folgendermaßen auf ihren Betrieb vorbereitet und dann betrieben: Zunächst erfolgt mit Hilfe des Temperatursensors 27 eine Kalibrierung der Beheizung des Trennmessers 5 durch die Induktionsspule 15. Ziel dieser Kalibrierung ist es, über einen Trennzyklus der Trennvorrichtung 1 , also über den Zeitraum vom Beginn eines Trennschnitts bis zum Beginn, nach einem entsprechenden Vorschub des abzulängenden Kunststoffprofils, des nächsten Trennschnitts, einen vorgegebenen zeitlichen und gegebenenfalls auch räumlichen Verlauf der Messertemperatur im Bereich der Schnittfläche 13 einzuhalten. Die Messertemperatur wird auf +/- 5 0C, bevorzugt auf +/- 3 0C, genau auf einer Temperatur zwischen 120 und 200 0C gehalten. Beim Schneiden soll dabei die Schnittfläche 13 eine vorgegebene Schneidtemperatur innerhalb dieses Toleranzbereichs einhalten. Zur Kalibrierung erfolgt zunächst die Versorgung der Induktionsspule 15, gesteuert über die Heizungssteuerung 19, durch die elektrische Versorgungseinheit 18 anhand eines Erfahrungswertes. Anschließend werden in einem Testlauf der Trennvorrichtung 1 mehrere Trennzyklen durchlaufen und es wird der zeitliche Verlauf der Temperatur des Trennmessers 5, gemessen mit Hilfe des Temperatursensors 27, aufgezeichnet. Anhand der Abweichung des gemessenen zeitlichen Temperaturverlaufes von einem Soll-Temperaturverlauf erfolgt nun eine Korrektur der Vorgabewerte für die elektrische Versorgungseinheit 18 durch die Heizungssteuerung 19. Dieser Testlauf-Betrieb wird solange wiederholt, bis, in einem iterativen Prozess, der gemessene zeitliche Temperaturverlauf sich ausreichend an den Soll-Temperaturverlauf angenähert hat. Anschließend ist die Trennvorrichtung 1 betriebsbereit. Das Trennmesser 5 hat dann zum Ablängen des Kunststoffprofils während aufeinander folgender Trennzyklen stets die optimale Temperatur. Während der Trennzyklen wird das Endlos-Kunststoffprofil längs der Förderrichtung 2a mit Hilfe eines nicht dargestellten Förderantriebs vorgeschoben. Eine typische Vorschubgeschwindigkeit liegt bei 15 m/min. Während der Durchführung des Trennschnittes wird die Trennstation 3 synchron mit diesem Profilvorschub in der Förderrichtung 2a mitgefördert. Bei dem angegebenen Profilvorschub können zum Beispiel zwei bis fünf Trennschnitte mit der Trennvorrichtung 1 durchgeführt werden. Die Heizstation 14 wird nicht mit dem Vorschub mitbewegt, sondern bleibt ortsfest. Pro Trennzyklus wird das Trennmesser 5 mindestens 5 s, bevorzugt 10 s, beheizt, sodass die erforderliche Temperaturkonstanz gewährleistet ist. Beim synchronisierten Vorschieben entfernt sich das Trennmesser 5 von der Induktionsspule 15 in der Förderrichtung 2a. Ab dem Lösen des Trennmessers 5 von der Induktionsspule 15 bis zum eigentlichen Trennschnitt vergehen typisch 2 bis 3 s, sodass kein nennenswerter Temperaturabfall des Trennmessers 5 stattfindet.The separation device 1 is prepared for its operation and then operated as follows: First, using the temperature sensor 27, a calibration of the heating of the separating blade 5 by the induction coil 15. The aim of this calibration is about a separation cycle of the separation device 1, ie over the period from Beginning of a separating cut to the beginning, after a corresponding advance of the plastic profile to be cut, the next separating cut, a given temporal and possibly also spatial course of the blade temperature in the region of the cut surface 13. The knife temperature is maintained at +/- 5 0 C, preferably at +/- 3 0 C, exactly at a temperature between 120 and 200 0 C. When cutting while the cutting surface 13 is to maintain a predetermined cutting temperature within this tolerance. For the calibration, the supply of the induction coil 15, controlled by the heating control 19, by the electrical supply unit 18 on the basis of empirical value, first takes place. Subsequently, several separation cycles are run through in a test run of the separation device 1 and it is the time course of the temperature of the separation blade 5, measured by means of the temperature sensor 27, recorded. Based on the deviation of the measured temporal temperature profile from a target temperature profile, the default values for the electrical supply unit 18 are corrected by the heating controller 19. This test run mode is repeated until, in an iterative process, the measured temporal temperature profile is sufficient has approached the desired temperature profile. Subsequently, the separator 1 is ready for operation. The cutting knife 5 then has to cut the plastic profile during successive separation cycles always the optimum temperature. During the separation cycles, the endless plastic profile along the conveying direction 2a is advanced by means of a conveyor drive, not shown. A typical feed rate is 15 m / min. During the execution of the separating cut, the separating station 3 is conveyed synchronously with this profile feed in the conveying direction 2a. At the specified profile feed, for example, two to five cuts with the separator 1 can be performed. The heating station 14 is not moved with the feed, but remains stationary. Per separation cycle, the separating knife 5 is at least 5 s, preferably 10 s, heated, so that the required temperature stability is ensured. When synchronized advancing the cutting blade 5 moves away from the induction coil 15 in the conveying direction 2a. From the release of the severing blade 5 from the induction coil 15 to the actual separating cut, typically 2 to 3 seconds pass, so that no appreciable temperature drop of the separating blade 5 takes place.
Es kann insbesondere eine zeitlich auf den Trennzyklus hin synchronisierte Ansteuerung der elektrischen Versorgungseinheit 18 durch die Heizungssteuerung 19 anhand entsprechender Vorgabewerte als Ergebnis der Kalibrierung erfolgen.In particular, a control of the electrical supply unit 18 synchronized in time with the disconnection cycle by the heating control 19 can be carried out on the basis of corresponding default values as a result of the calibration.
Während des Betriebs der Trennvorrichtung 1 kann stichprobenweise die Temperatur der Schnittfläche 13 mit Hilfe des Temperatursensors 27 während ausgewählter Trennzyklen überwacht werden. Auf diese Weise können Drifteffekte, z. B. durch eine Kunststoffbelagbildung auf der Schnittfläche 13, erkannt und durch entsprechende Signale an die Heizungssteuerung 19 auskorrigiert werden. Derartige Drifteffekte durch Kunststoffbelagbildung können, wie Messungen der Anmelderin gezeigt haben, zu einem unerwünschten Abfall der Ist-Messertemperatur bis zu 30 0C führen.During operation of the separation device 1, the temperature of the cut surface 13 can be monitored at random by means of the temperature sensor 27 during selected separation cycles. In this way, drift effects, such. B. by a plastic coating on the cut surface 13, detected and corrected by appropriate signals to the heater control 19. Such drift effects by plastic coating formation, as measurements have shown by the Applicant, lead to an undesirable drop in the actual knife temperature up to 30 ° C.
Zur Erfassung des zeitlichen Temperaturverlaufes während eines Trennzyklus kann der Temperatursensor 27 die Trennmessertemperatur mehrmals während des Trennzyklus erfassen. Alternativ ist es möglich, die Trennmessertemperatur kontinuierlich zu messen.To detect the temporal temperature profile during a separation cycle, the temperature sensor 27 can detect the separation knife temperature several times during the separation cycle. Alternatively, it is possible to continuously measure the severing blade temperature.
Der Temperatursensor kann bei einer nicht dargestellten Variante so ausgebildet sein, dass er die Trennmessertemperatur in mehreren Trennmesserbereichen separat erfasst. Hierzu kann der Temperatursensor mehrere, räumlich verteilte Einzeldetektoren oder, bei einer flächigen Erfassung, mehrere Erfassungsbereiche aufweisen. Bei der letzten Variante kann der Temperatursensor z. B. als Wärmebildkamera mit einem zweidimensionalen Erfassungsbereich gestaltet sein, bei der verschiedene Erfassungsbereiche getrennt ausgewertet werden.The temperature sensor may be formed in a variant, not shown, so that it detects the Trennmessertemperatur separately in multiple Trennmesserbereichen. For this purpose, the temperature sensor can have a plurality of spatially distributed individual detectors or, in the case of a two-dimensional detection, several detection ranges. In the last variant, the temperature sensor z. B. be designed as a thermal imaging camera with a two-dimensional detection area, are evaluated separately at the different detection areas.
Durch die somit erfolgende, räumlich selektive Trennmessertemperaturerfassung lassen sich exakte Rückschlüsse auf die Temperaturverteilung im Trennmesser z. B. während des Schnitts ziehen. Aufgrund der so gewonnen Informationen kann beispielsweise eine Anpassung der Form der Wärmeübertragungsfläche 26 der Induktionsspule 15 erfolgen. Alternativ ist eine selektive räumliche Anpassung der Wärmeübertragung durch eine entsprechende Unterteilung der Induktionsspule in verschiedene, separat angesteuerte Einzelspulen möglich.By thus taking place, spatially selective Trennmessertemperaturerfassung can be accurate conclusions about the temperature distribution in the separating knife z. B. during the cut. On the basis of the information thus obtained, it is possible, for example, to adapt the shape of the heat transfer surface 26 of the induction coil 15. Alternatively, a selective spatial adaptation of the heat transfer by a corresponding subdivision of the induction coil in different, individually controlled individual coils is possible.
Durch die exakte Vorgabe der Messertemperatur mit Hilfe der Trennvorrichtung 1 wird ein optimierter Trennschnitt erzeugt. Insbesondere erfolgt beim Trennen keine unerwünschte plastische Verformung des Kunststoffprofils im Bereich der Trennebene, wie dies bei einer zu geringen Messertemperatur der Fall sein kann. Auch eine übermäßige Belagbildung auf dem Trennmesser wird vermieden, wie dies bei einer zu hohen Messertemperatur der Fall sein kann.By the exact specification of the blade temperature by means of the separator 1, an optimized separation cut is generated. In particular, no undesired plastic deformation of the plastic profile in the region of the parting plane occurs during cutting, as may be the case when the blade temperature is too low. Excessive deposit formation on the separating knife is also avoided, as can be the case if the knife temperature is too high.
- Patentansprüche - - Claims -

Claims

Patentansprüche claims
1. Trennvorrichtung (1 ) zum Ablängen von Kunststoffprofilen mit einem Arbeitstisch (2), über den das Kunststoffprofil geführt ist, mit einem relativ zum Arbeitstisch (2) angetriebenen, metallischen Trennmesser1. separating device (1) for cutting plastic profiles with a work table (2) over which the plastic profile is guided, with a relative to the work table (2) driven, metallic cutting knife
(5), mit einer Heizeinrichtung (14) zum Beheizen des Trennmessers (5), mit einer Energiequelle (18) für die Heizeinrichtung (14), dadurch gekennzeichnet, dass die Heizeinrichtung (14) aufweist:(5), with a heating device (14) for heating the separating knife (5), with a power source (18) for the heating device (14), characterized in that the heating device (14) comprises:
- eine vom Trennmesser (5) beabstandete, induktive Heiz-Induktionsspule (15),a inductive heating induction coil (15) spaced from the separating knife (5),
- wobei die Energiequelle (18) eine elektrische Versorgungseinheit zur Spannungsversorgung der Induktionsspule (15) aufweist.- Wherein the energy source (18) has an electrical supply unit for supplying power to the induction coil (15).
2. Trennvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Heiz- Induktionsspule (15) arbeitstischfest angeordnet ist.2. Separating device according to claim 1, characterized in that the heating induction coil (15) is arranged table fixed.
3. Trennvorrichtung nach Anspruch 1 oder 2, gekennzeichnet durch eine Verstelleinrichtung (23) zur Vorgabe einer Relativposition der Heiz-Induktionsspule (15) zum Trennmesser (5).3. Separating device according to claim 1 or 2, characterized by an adjusting device (23) for specifying a relative position of the heating induction coil (15) for the separating knife (5).
4. Trennvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Heiz-Induktionsspule (15) eine Wärmeübertragungsfläche (26) aufweist, deren Geometrie an die Geometrie des Trennmessers (5) angepasst ist.4. Separating device according to one of claims 1 to 3, characterized in that the heating induction coil (15) has a heat transfer surface (26) whose geometry is adapted to the geometry of the separating knife (5).
5. Trennvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Heizeinrichtung (14) eine Heizungssteuerung (19) umfasst, die mit der elektrischen Versorgungseinheit (18) in Signalverbindung steht. 5. Separating device according to one of claims 1 to 4, characterized in that the heating device (14) comprises a heating control (19) which is in signal communication with the electrical supply unit (18).
6. Trennvorrichtung (1) zum Ablängen von Kunststoff profilen mit einem angetriebenen Trennmesser (5), mit einer Heizeinrichtung (14) zum Beheizen des Trennmessers (5), mit einer Energiequelle (18) für die Heizeinrichtung (14), gekennzeichnet durch einen Temperatursensor (27) zur Erfassung der Temperatur des Trennmessers (5).6. separation device (1) for cutting plastic profiles with a driven cutting knife (5), with a heater (14) for heating the separating knife (5), with an energy source (18) for the heating device (14), characterized by a temperature sensor (27) for detecting the temperature of the separating knife (5).
7. Trennvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Temperatursensor (27) mit der Energiequelle (18) zumindest zeitweilig in Signalverbindung steht.7. Separating device according to claim 6, characterized in that the temperature sensor (27) is at least temporarily in signal communication with the energy source (18).
8. Trennvorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Temperatursensor (27) mit einer Heizungssteuerung (19) in Signalverbindung steht.8. Separating device according to claim 6 or 7, characterized in that the temperature sensor (27) with a heating control (19) is in signal communication.
9. Trennvorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass der Temperatursensor (27) messerfest angeordnet ist.9. Separating device according to one of claims 6 to 8, characterized in that the temperature sensor (27) is arranged fixed to the knife.
10. Trennvorrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass der Temperatursensor (27) so angeordnet ist, dass er die Trennmessertemperatur dort misst, wo das Trennmesser (5) beim Schneiden nicht mit dem Kunststoffprofil in Kontakt kommt.10. Separating device according to one of claims 6 to 9, characterized in that the temperature sensor (27) is arranged so that it measures the separating blade temperature where the cutting blade (5) does not come into contact with the plastic profile during cutting.
11. Trennvorrichtung nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, dass der Temperatursensor (27) als Infrarot-Detektor ausgebildet ist, der dem Trennmesser (5) benachbart angeordnet ist.11. Separating device according to one of claims 6 to 10, characterized in that the temperature sensor (27) is designed as an infrared detector, which is arranged adjacent to the separating knife (5).
12. Trennvorrichtung nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, dass der Temperatursensor (27) als Kontaktsensor ausgebildet ist, der in einer Aufnahme des Trennmessers (5) oder einer mit dem Trennmesser (5) in gutem Wärmekontakt stehenden Komponente (8, 9, 10) angeordnet ist.12. Separating device according to one of claims 6 to 10, characterized in that the temperature sensor (27) is designed as a contact sensor which in a recording of the separating knife (5) or with the separating knife (5) in good thermal contact component (8, 9, 10) is arranged.
13. Trennvorrichtung nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, dass der Temperatursensor (27) so ausgebildet ist, dass er die Trennmessertemperatur mehrmals während eines Trennzyklus erfasst. 13. Separating device according to one of claims 6 to 12, characterized in that the temperature sensor (27) is formed so that it detects the separating knife temperature several times during a separation cycle.
4. Trennvorrichtung nach einem der Ansprüche 6 bis 13, dadurch gekennzeichnet, dass der Temperatursensor (27) so ausgebildet ist, dass er die Trennmessertemperatur in mehreren Trennmesserbereichen separat erfasst. 4. Separating device according to one of claims 6 to 13, characterized in that the temperature sensor (27) is formed so that it detects the Trennmessertemperatur separately in several Trennmesserbereichen.
EP07703112A 2006-02-24 2007-01-30 Separating device for cutting profiled plastic elements Not-in-force EP1986828B1 (en)

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DE102006008622A DE102006008622A1 (en) 2006-02-24 2006-02-24 Separating apparatus for cutting plastics profiles to length, has metallic separating blade heated by induction heating coil spaced from blade, giving accurate temperature control and good cutting performance
PCT/EP2007/000756 WO2007098839A1 (en) 2006-02-24 2007-01-30 Separating device for cutting profiled plastic elements

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WO2007098839A1 (en) 2007-09-07
DE502007003143D1 (en) 2010-04-29
DE102006008622A1 (en) 2007-08-30
EP1986828B1 (en) 2010-03-17
ATE461022T1 (en) 2010-04-15

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