EP0441907A1 - Device for thermally cutting a travelling web of thermoplastic material. - Google Patents

Device for thermally cutting a travelling web of thermoplastic material.

Info

Publication number
EP0441907A1
EP0441907A1 EP19900910512 EP90910512A EP0441907A1 EP 0441907 A1 EP0441907 A1 EP 0441907A1 EP 19900910512 EP19900910512 EP 19900910512 EP 90910512 A EP90910512 A EP 90910512A EP 0441907 A1 EP0441907 A1 EP 0441907A1
Authority
EP
European Patent Office
Prior art keywords
cutting
material web
carrier
cutting head
web
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
EP19900910512
Other languages
German (de)
French (fr)
Other versions
EP0441907B1 (en
Inventor
Erich Buehler
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.)
Textilma AG
Original Assignee
Textilma AG
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 Textilma AG filed Critical Textilma AG
Publication of EP0441907A1 publication Critical patent/EP0441907A1/en
Application granted granted Critical
Publication of EP0441907B1 publication Critical patent/EP0441907B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B26D7/22—Safety devices specially adapted for cutting machines
    • B26D7/24—Safety devices specially adapted for cutting machines arranged to disable the operating means for the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/06—Severing by using heat
    • B26F3/08—Severing by using heat with heated members
    • B26F3/12—Severing by using heat with heated members with heated wires
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/22—Severing by heat or by chemical agents

Definitions

  • the invention relates to a device of the type mentioned in the preamble of claim 1.
  • This device contains a cutting element which is movable relative to the material web and which is arranged on a fastening foot and interacts with a spring device which pretensions the cutting element together with a cutting member against the direction of travel of the material web. Furthermore, the device is provided with an electrical heating of the cutting element, which can be controlled as a function of the position of the cutting element or cutting element. If the cutting resistance increases, the cutting member is pivoted in the direction of travel of the material web, whereby the pretensioning force increases on the one hand and the heating power is increased on the other hand in order to cut the material web even with increased resistance.
  • the object of the invention is to design a device of the type mentioned at the outset in such a way that damage to the cutting head with the cutting member and / or the material web is avoided even under the most unfavorable operating conditions and in the event of accidents.
  • the object is achieved according to the invention by the characterizing features of the claim. If the cutting resistance exceeds the normal cutting resistance during normal operation, for example as a result of a power failure on the cutting member or a defect in the material web, or if the cutting member breaks, for example cutting wire, the latching device is triggered and the cutting member disengages from the material web. This prevents damage or destruction of the cutting head with its elements on the one hand and the material web on the other hand.
  • the locking device facilitates maintenance and adjustment work on the cutting head.
  • Claim 3 describes a particularly simple advantageous embodiment of the locking device. Training according to claim 4 is also possible.
  • An embodiment of the device according to claim 6 prevents further damage to the material web, since the power supply to the cutting member is immediately interrupted when disengaging, so that damage to the material web by heat radiation of the cutting member is prevented. It is fundamentally possible to mount the cutting head on the side of the carrier opposite the running direction of the material web. However, an embodiment according to claim 7 is more advantageous, which enables a more compact design, since the space between the carrier and the material web can be kept smaller and no consideration needs to be given to jamming of the cutting head between the carrier and the material web.
  • the device can have a single cutting head if, for example, only the edge region of a material web has to be cut. However, if such a material web is to be divided into several strips, an embodiment according to claim 9 is advantageous.
  • the design of the device according to claim 10 makes it possible to adjust the position of the cutting head and thus the cutting element very subtly to the desired position on the material web.
  • the device is suitable for cutting a wide variety of material webs, such as foils and the like.
  • material webs such as foils and the like.
  • an embodiment according to claim 11 is advantageous for severing a textile web, preferably a fabric web.
  • Figure 1 A first cutting device in
  • Figure 2 shows a second device in side view transverse to the direction of the web
  • Figure 3 shows a third device in side view transverse to the direction of the web.
  • FIG. 1 shows a device for the thermal cutting of a material web 2, for example a fabric web, which is moved in the running direction 4.
  • a cutting head 8 is arranged on a carrier 6 that extends across the width of the fabric web.
  • the latter contains a fastening foot 10 which is fastened to the carrier 6 so as to be displaceable in the longitudinal direction thereof by means of a dovetail guide 12.
  • a latching device 14 is arranged on the side of the fastening foot 10 facing the material web 2. It has a leaf spring 16 which cooperates with an edge 18 of the dovetail profile 20 on the carrier 6.
  • the leaf spring contains an overrun part 22, which facilitates the attachment of the cutting head 8 to the carrier 6.
  • a rack 24 is arranged on the carrier 6 on the side facing the fastening foot 12, with which a toothed wheel 26 meshes, which is mounted in the fastening foot 10.
  • the gear 26 contains on its upper, free side means 28 for attaching a tool, for example a slot for attaching a screwdriver.
  • the cutting head 8 also contains a cutting element 30 fastened in the fastening foot 10, which consists of two arms 32 and 34 which protrude into the transport path of the material web 2 and which have at their free end an electrically heated cutting member 36, for example a resistance wire or a resistance lamella, which is heated to the necessary cutting temperature when the current flows. Both arms 32 and 34 are connected at their upper end to a power supply line 38, 40.
  • the design of the device is such that the locking device 14 has a retaining force in the running direction 4 of the material web 2, which essentially corresponds to the force of the intended cutting resistance of the cutting member 36 on the material web. If the cutting resistance of the cutting element 30 or cutting member 36 exceeds the normal cutting resistance, for example as a result of a power failure or material defect in the material web, the latching device 14 is triggered and the cutting head 8 swivels over the upper edge. 42 of the dovetail profile 20 of the carrier 6 from the material web 2 until the cutting element 30 disengages from the material web 2.
  • the cutting element 30 preferably contains on its lower arm 34 a shoe 44 with which it rests on the running material web 2, which is now not cut.
  • the device according to FIG. 2 corresponds essentially to that of FIG. 1, so that the same parts are provided with the same reference numerals and reference is made to the explanations for FIG. 1.
  • the latching device 14a of Figure 2 is adjustable in terms of the restraining force t.
  • the power supply to the cutting element 30 or to the cutting member 36 takes place via a switch 48, to which a power supply line 38a is connected.
  • the desk 48 contains a contact member 50 which is biased against the carrier 6 by means of a spring 52 and interrupts the power line 54 to the arm 32a when the cutting head 8 is disengaged, so that the cutting member 36 is de-energized when the cutting head 8 is disengaged.
  • the embodiment of FIG. 3 again essentially corresponds to the embodiment of the device according to FIG. 1, so that again the same parts are provided with the same reference numerals and reference is made to the above statements.
  • the device of FIG. 3 has a modified guidance of the fastening foot 10a on the carrier 6a and a modified locking device 14b.
  • the profile rail 56 running along the carrier 6a contains on the upper side a bar 58 which in cross section has an essentially circular head part 60 which is connected to the profile rail 56 via a web part 62.
  • the fastening foot 10a is attached to this bar 58 by means of a foot part 64 which has a part-circular recess 66, so that the fastening foot 10a can pivot about the bar 58.
  • the fastening foot 10a further contains a lower foot part 68, which engages under the profile rail 56 and carries the latching device 14b.
  • This preload can be set by means of an adjusting screw 76.
  • the retaining force of the latching device 14b can be set to a desired dimension and thus to the respective properties of the material web to be cut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

La tête de coupe (8) est disposée sur un support (6) au moyen d'un pied de fixation (10) et présente un élément de coupe (36) plongeant dans la bande de matière défilante (2). Pour éviter des endommagements lors d'un mauvais fonctionnement et pour faciliter les travaux de maintenance et de réglage, le pied de fixation (10) est fixé sur le support (6) au moyen d'un dispositif à crans (14). La force de rétention du dispositif à crans dans le sens du défilement de la bande de matière (2) correspond essentiellement à la force de la résistance à la coupe, conforme à la définition, de l'élément de coupe (36) dans la bande de matière (2), et ceci de telle sorte que l'élément de coupe se dégage dans le cas d'une résistance à la coupe non conforme à la définition dans la bande de matière (2).The cutting head (8) is arranged on a support (6) by means of a fixing foot (10) and has a cutting element (36) plunging into the strip of moving material (2). To avoid damage during a malfunction and to facilitate maintenance and adjustment work, the fixing foot (10) is fixed to the support (6) by means of a notch device (14). The retention force of the notched device in the direction of travel of the strip of material (2) essentially corresponds to the strength of the cutting resistance, as defined, of the cutting element (36) in the strip of material (2), and this so that the cutting element is released in the case of a resistance to cutting not in accordance with the definition in the strip of material (2).

Description

Vorrichtung zum thermischen Schneiden einer laufenden Materialbahn aus thermoplastischem Material  Device for the thermal cutting of a running material web made of thermoplastic material
Die Erfindung betrifft eine Vorrichtung der im Oberbegriff des Anspruches 1 genannten Art. The invention relates to a device of the type mentioned in the preamble of claim 1.
Vorrichtungen der eingangs genannten Art sind mehrfach bekannt , so beispielsweise aus der DE-OS 2 315 333 . Diese Vorrichtung enthält ein relativ zur Materialbahn bewegliches Schneidelement, dass an einem Befestigungsfuss angeordnet ist und mit einer Federvorrichtung zusammenwirkt, die das Schneidelement zusammen mit einem Schneidglied entgegen der Laufrichtung der Materialbahn vorspannt . Ferner ist die Vorrichtung mit einer elektrischen Heizung des Schneidgliedes versehen, welche in Abhängigkeit von der Stellung des Schneidelementes bzw Schneidgliedes steuerbar ist . Nimmt der Schneidwiderstand zu, so wird das Schneidglied in Laufrichtung der Materialbahn verschwenkt , wobei einerseits die Vorspannkraft zunimmt und andererseits die Heizleistung erhöht wird, um auch bei erhöhtem Widerstand die Materialbahn zu schneiden. Nachteilig ist es jedoch, dass im Falle eines durch Fehler in der Materialbahn bedingten besonders hohen Schneidwiderstandes oder beim Ausfallen des Heizstromes das Schneidglied die Materialbahn nicht mehr schneiden kann, wodurch das Schneidgl ied und gegebenenf alls der ganze Schneidkopf beschädigt oder zerstört wird. Auch die Materialbahn kann durch das nicht mehr betriebsbereite Schneidglied beschädigt werden. Devices of the type mentioned are known several times, for example from DE-OS 2 315 333. This device contains a cutting element which is movable relative to the material web and which is arranged on a fastening foot and interacts with a spring device which pretensions the cutting element together with a cutting member against the direction of travel of the material web. Furthermore, the device is provided with an electrical heating of the cutting element, which can be controlled as a function of the position of the cutting element or cutting element. If the cutting resistance increases, the cutting member is pivoted in the direction of travel of the material web, whereby the pretensioning force increases on the one hand and the heating power is increased on the other hand in order to cut the material web even with increased resistance. However, it is disadvantageous that in the event of a particularly high cutting resistance caused by defects in the material web or if the heating current fails, the cutting member can no longer cut the material web, as a result of which the cutting member and possibly the entire cutting head are damaged or destroyed. The material web can also be damaged by the cutting element, which is no longer operational.
Aufgabe der Erfindung ist es , eine Vorrichtung der eingangs genannten so auszubilden, dass Beschädigungen des Schneidkopfes mit dem Schneidglied und/oder der Materialbahn auch bei ungünstigsten Betriebsbedingungen und Störfällen vermieden werden. Die Aufgabe wird erfindungsgemäss durch die kennzeichnenden Merkmale des Anspruches eingelöst. Uebersteigt der Schneidwiderstand beispielsweise infolge Stromausfall an dem Schneidglied oder Fehler in der Materialbahn den normalen Schneidwiderstand bei ordnungsgemässen Betrieb, oder bei einem Bruch des Schneidgliedes, z.B. Schneiddrahtes so wird die Rastvorrichtung ausgelöst und das Schneidglied gelangt ausser Eingriff mit der Materialbahn. Dadurch wird eine Beschädigung oder Zerstörung einerseits des Schneidkopfes mit seinen Elementen und andererseits der Materialbahn vermieden. Im übrgen erleichtert die Rastvorrichtung Wartungs- und Einstellarbeiten des Schneidkopfes. The object of the invention is to design a device of the type mentioned at the outset in such a way that damage to the cutting head with the cutting member and / or the material web is avoided even under the most unfavorable operating conditions and in the event of accidents. The object is achieved according to the invention by the characterizing features of the claim. If the cutting resistance exceeds the normal cutting resistance during normal operation, for example as a result of a power failure on the cutting member or a defect in the material web, or if the cutting member breaks, for example cutting wire, the latching device is triggered and the cutting member disengages from the material web. This prevents damage or destruction of the cutting head with its elements on the one hand and the material web on the other hand. In addition, the locking device facilitates maintenance and adjustment work on the cutting head.
Vorteilhafte Ausgestaltungen der Vorrichtung sind in den Ansprüchen 2 bis 11 beschrieben. Advantageous embodiments of the device are described in claims 2 to 11.
Besonders vorteilhaft ist es, wenn die Rückhaltekraft gemäss Anspruch 2 einstellbar ist, so dass der Schneidkopf bzw. das Schneidglied auf Materialbahnen unterschiedlicher Schneideigenschaften eingestellt werden kann. Der Anspruch 3 beschreibt eine besonders einfache vorteilhafte Ausgestaltung der Rastvorrichtung. Auch eine Ausbildung nach Anspruch 4 ist möglich. It is particularly advantageous if the retention force can be adjusted, so that the cutting head or the cutting member can be adjusted to material webs with different cutting properties. Claim 3 describes a particularly simple advantageous embodiment of the locking device. Training according to claim 4 is also possible.
Es ist grundsätzlich denkbar, dass sich der Schneidkopf beim Ausrasten der Rastvorrichtung von dem Träger löst. Vorteilhafter ist jedoch eine Ausbildung nach Anspruch 5. It is fundamentally conceivable that the cutting head detaches from the carrier when the latching device is disengaged. However, an embodiment according to claim 5 is more advantageous.
Eine Ausgestaltung der Vorrichtung nach Anspruch 6 verhindert weitere Schäden an der Materialbahn, da die Stromzufuhr zum Schneidglied beim Ausrasten sofort unterbrochen wird, so dass auch eine Beschädigung der Materialbahn durch Hitzestrahlung des Schneidgliedes verhindert wird. Es ist grundsätzlich möglich, den Schneidkopf auf der der Laufrichtung der Materialbahn gegenüberliegenden Seite des Trägers anzubringen. Vorteilhafter ist jedoch eine Ausgestaltung nach Anspruch 7 , die eine gedrungenere Bauart ermöglicht , da der Freiraum zwischen Träger und Materialbahn kleiner gehalten werden kann und auf ein Verklemmen des Schneidkopfes zwischen Träger und Materialbahn keine Rücksicht genommen werden muss . An embodiment of the device according to claim 6 prevents further damage to the material web, since the power supply to the cutting member is immediately interrupted when disengaging, so that damage to the material web by heat radiation of the cutting member is prevented. It is fundamentally possible to mount the cutting head on the side of the carrier opposite the running direction of the material web. However, an embodiment according to claim 7 is more advantageous, which enables a more compact design, since the space between the carrier and the material web can be kept smaller and no consideration needs to be given to jamming of the cutting head between the carrier and the material web.
Eine besonders vorteilhafte Ausgestaltung der Befestigung des Schneidkopfes am Träger beschreibt Anspruch 8. A particularly advantageous embodiment of the attachment of the cutting head to the carrier is described in claim 8.
Die Vorrichtung kann einen einzelnen Schneidkopf aufweisen, wenn beispielsweise nur der Randbereich einer Materialbahn beschnitten werden muss . Soll eine solche Materialbahn jedoch in mehrere Streifen unterteilt werden, so ist eine Ausbildung nach Anspruch 9 von Vorteil . The device can have a single cutting head if, for example, only the edge region of a material web has to be cut. However, if such a material web is to be divided into several strips, an embodiment according to claim 9 is advantageous.
Die Ausbildung der Vorrichtung nach Anspruch 10 ermöglicht es , die Lage des Schneidkopfes und damit des Schneideϊementes sehr subtil auf die gewünschte Position an der Materialbahn einzustellen. The design of the device according to claim 10 makes it possible to adjust the position of the cutting head and thus the cutting element very subtly to the desired position on the material web.
Grundsätzlich ist die Vorrichtung zum Schneiden der verschiedensten Materialbahnen, wie Folien und dergleichen geeignet . Vorteilhaft ist jedoch eine Ausbildung nach Anspruch 11 zur Durchtrennung einer Textilbahn, vorzugsweise einer Gewebebahn. Basically, the device is suitable for cutting a wide variety of material webs, such as foils and the like. However, an embodiment according to claim 11 is advantageous for severing a textile web, preferably a fabric web.
Ausführungsbeispiele der erf indungsgemässen Vorrichtung werden nachfolgend anhand der Zeichnungen beschrieben, dabei zeigen: Figur 1 Eine erste Schneidvorrichtung in Exemplary embodiments of the device according to the invention are described below with reference to the drawings, in which: Figure 1 A first cutting device in
Seitenansicht quer zur Laufrichtung der Materialbahn;  Side view transverse to the direction of travel of the material web;
Figur 2 Eine zweite Vorrichtung in Seitenansicht quer zur Laufrichtung der Materialbahn; Figure 2 shows a second device in side view transverse to the direction of the web;
Figur 3 Eine dritte Vorrichtung in Seitenansicht quer zur Laufrichtung der Materialbahn. Figure 3 shows a third device in side view transverse to the direction of the web.
Die Figur 1 zeigt eine Vorrichtung zum thermischen Schneiden einer Materialbahn 2, beispielsweise eine Gewebebahn, die in Laufrichtung 4 bewegt wird. An einem über die Breite der Gewebebahn reichenden Träger 6 ist ein Schneidkopf 8 angeordnet. Letzterer enthält einen Befestigungsfuss 10, der mittels einer Schwalbenschwanzführung 12 am Träger 6 in dessen Längsrichtung verschiebbar befestigt ist. Eine Rastvorrichtung 14 ist an der der Materialbahn 2 zugewandten Seite des Befestigungsfusses 10 angeordnet. Sie weist eine Blattfeder 16 auf, die mit einer Kante 18 des Schwalbenschwanzprofils 20 am Träger 6 zusammenwirkt. Die Blattfeder enthält einen Auflaufteil 22, welcher das Ansetzen des Schneidkopfes 8 am Träger 6 erleichtert. FIG. 1 shows a device for the thermal cutting of a material web 2, for example a fabric web, which is moved in the running direction 4. A cutting head 8 is arranged on a carrier 6 that extends across the width of the fabric web. The latter contains a fastening foot 10 which is fastened to the carrier 6 so as to be displaceable in the longitudinal direction thereof by means of a dovetail guide 12. A latching device 14 is arranged on the side of the fastening foot 10 facing the material web 2. It has a leaf spring 16 which cooperates with an edge 18 of the dovetail profile 20 on the carrier 6. The leaf spring contains an overrun part 22, which facilitates the attachment of the cutting head 8 to the carrier 6.
Am Träger 6 ist auf der dem Befestigungsfuss 12 zugewandten Seite eine Zahnstange 24 angeordnet, mit der ein Zahnrad 26 kämmt, welches im Befestigungsfuss 10 gelagert ist. Das Zahnrad 26 enthält an seiner oberen, freien Seite Mittel 28 zum Ansetzen eines Werkzeuges, beispielsweise einen Schlitz zum Ansetzen eines Schraubenziehers. Mittels des Zahnrades 26 und der Zahnstange 24 kann der Schneidkopf 8 längs des Trägers 6 verschoben und auf die gewünschte Schneidposition eingestellt werden. Der Schneidkopf 8 enthält weiter ein im Befestigungsfuss 10 befestigtes Schneidelement 30 , welches aus zwei , in den Transportweg der Materialbahn 2 ragenden Armen 32 und 34 besteht , die an ihrem freien Ende ein elektrisch beheiztes Schneidglied 36 , beispielsweise einen Widerstandsdraht oder eine Widerstandslamelle aufweisen, das beim Stromdurchfluss auf die notwendige Schneidtemperatur erhitzt wird. Beide Arme 32 und 34 sind an ihrem oberen Ende mit einer Stromzuleitung 38 , 40 verbunden. A rack 24 is arranged on the carrier 6 on the side facing the fastening foot 12, with which a toothed wheel 26 meshes, which is mounted in the fastening foot 10. The gear 26 contains on its upper, free side means 28 for attaching a tool, for example a slot for attaching a screwdriver. By means of the gearwheel 26 and the toothed rack 24, the cutting head 8 can be moved along the carrier 6 and adjusted to the desired cutting position. The cutting head 8 also contains a cutting element 30 fastened in the fastening foot 10, which consists of two arms 32 and 34 which protrude into the transport path of the material web 2 and which have at their free end an electrically heated cutting member 36, for example a resistance wire or a resistance lamella, which is heated to the necessary cutting temperature when the current flows. Both arms 32 and 34 are connected at their upper end to a power supply line 38, 40.
Die Ausbildung der Vorrichtung ist so getroffen, dass die Rastvorrichtung 14 eine Rückhaltekraft in Laufrichtung 4 der Materialbahn 2 aufweist , die im wesentlichen der Kraft des bestimmungsgemässen Schneidwiderstandes des Schneidgliedes 36 an der Materialbahn entspricht . Übersteigt der Schneidwiderstand des Schneidelementes 30 bzw Schneidgliedes 36 beispielsweise infolge Stromausfall oder Materialfehler in der Materialbahn den normalen Schneidwiderstand, so wird die Rastvorrichtung 14 ausgelöst und der Schneidkopf 8 schwenkt über die obere Kante. 42 des Schwalbenschwanzprofils 20 des Trägers 6 soweit aus der Materialbahn 2 aus , bis das Schneidelement 30 an der Materialbahn 2 ausser Eingriff gelangt . Vorzugsweise enthält das Schneidelement 30 an seinem unteren Arm 34 einen Schuh 44 , mit dem es auf der nunmehr nicht geschnittenen laufenden Materialbahn 2 aufliegt. The design of the device is such that the locking device 14 has a retaining force in the running direction 4 of the material web 2, which essentially corresponds to the force of the intended cutting resistance of the cutting member 36 on the material web. If the cutting resistance of the cutting element 30 or cutting member 36 exceeds the normal cutting resistance, for example as a result of a power failure or material defect in the material web, the latching device 14 is triggered and the cutting head 8 swivels over the upper edge. 42 of the dovetail profile 20 of the carrier 6 from the material web 2 until the cutting element 30 disengages from the material web 2. The cutting element 30 preferably contains on its lower arm 34 a shoe 44 with which it rests on the running material web 2, which is now not cut.
Die Vorrichtung gemäss Figur 2 entspricht im wesentlichen jener der Figur 1, sodass gleiche Teile mit gleichen Bezugszeichen versehen sind und auf die Ausführungen zu Figur 1 verwiesen wird . In Ergänzung der Vorrichtung der Figur 1 ist die Rastvorrichtung 14a der Figur 2 hinsichtlich der Rückhaltekraf t einstellbar . Hierzu ist eine Stellschraube 46 vorhanden, mit der die Vorspannkraft der Blattfeder 16 einstellbar ist . Weiter erfolgt die Stromzuführung zum Schneidelement 30 bzw. zum Schneidglied 36 über einen Schalter 48 , an dem eine Stromzuleitung 38a angeschlossen ist . Der Schalter 48 enthält ein Kontaktglied 50, das mittels einer Feder 52 gegen den Träger 6 vorgespannt ist und beim Ausrasten des Schneidkopfes 8 die Stromleitung 54 zum Arm 32a unterbricht, sodass das Schneidglied 36 im ausgerasteten Zustand des Schneidkopfes 8 stromlos ist. The device according to FIG. 2 corresponds essentially to that of FIG. 1, so that the same parts are provided with the same reference numerals and reference is made to the explanations for FIG. 1. In addition to the device of Figure 1, the latching device 14a of Figure 2 is adjustable in terms of the restraining force t. For this purpose, there is an adjusting screw 46 with which the prestressing force of the leaf spring 16 can be adjusted. Furthermore, the power supply to the cutting element 30 or to the cutting member 36 takes place via a switch 48, to which a power supply line 38a is connected. The desk 48 contains a contact member 50 which is biased against the carrier 6 by means of a spring 52 and interrupts the power line 54 to the arm 32a when the cutting head 8 is disengaged, so that the cutting member 36 is de-energized when the cutting head 8 is disengaged.
Das Ausführungsbeispiel der Figur 3 entspricht wiederum im wesentlichen dem Ausführungsbeispiel der Vorrichtung nach Figur 1, sodass wiederum gleiche Teile mit gleichen Bezugszeichen versehen sind und auf obige Ausführungen verwiesen wird. Die Vorrichtung der Figur 3 hat eine abgewandelte Führung des Befestigungsfusses 10a am Träger 6a und eine abgewandelte Rastvorrichtung 14b. Die längs des Trägers 6a verlaufende Profilschiene 56 enthält an der oberen Seite eine Leiste 58, die im Querschnitt einen im wesentlichen kreisrunden Kopfteil 60 aufweist, der über einen Stegteil 62 mit der Profilschiene 56 verbunden ist. An dieser Leiste 58 ist der Befestigungsfuss 10a mittels eines Fussteiles 64 angesetzt, der eine teilkreisförmige Ausnehmung 66 aufweist, sodass der Befestigungsfuss 10a um die Leiste 58 schwenken kann. Der Befestigungsfuss 10a enthält weiter einen unteren Fussteil 68, der die Profilschiene 56 untergreift und die Rastvorrichtung 14b trägt. Diese enthält ein kugelartiges Rastelement 70, welches mittels einer Feder 72 gegen eine Rille 74 in der Profilschiene 56 vorgespannt ist. Diese Vorspannung kann mittels einer Stellschraube 76 eingestellt werden. Dadurch lässt sich die Rückhaltekraft der Rastvorrichtung 14b auf ein gewünschtes Mass und damit auf die jeweiligen Eigenschaften der zu schneidenden Materialbahn einstellen. B e z u g s z e i c h e n 2 MaterialbahnThe embodiment of FIG. 3 again essentially corresponds to the embodiment of the device according to FIG. 1, so that again the same parts are provided with the same reference numerals and reference is made to the above statements. The device of FIG. 3 has a modified guidance of the fastening foot 10a on the carrier 6a and a modified locking device 14b. The profile rail 56 running along the carrier 6a contains on the upper side a bar 58 which in cross section has an essentially circular head part 60 which is connected to the profile rail 56 via a web part 62. The fastening foot 10a is attached to this bar 58 by means of a foot part 64 which has a part-circular recess 66, so that the fastening foot 10a can pivot about the bar 58. The fastening foot 10a further contains a lower foot part 68, which engages under the profile rail 56 and carries the latching device 14b. This contains a spherical locking element 70 which is biased by means of a spring 72 against a groove 74 in the profile rail 56. This preload can be set by means of an adjusting screw 76. As a result, the retaining force of the latching device 14b can be set to a desired dimension and thus to the respective properties of the material web to be cut. Reference 2 material web
4 Laufrichtung 4 running direction
6 Träger 6 carriers
6a Träger6a carrier
8 Schneidkopf 8 cutting head
10 Befestigungsfuss10 mounting feet
10a Befestigungsfuss 10a mounting foot
12 Schwalbenschwanzführung 14 Rastvorrichtung 12 dovetail guide 14 locking device
14a Rastvorrichtung 14a locking device
14b Rastvorrichtung 14b locking device
16 Blattfeder  16 leaf spring
16a Blattfeder 16a leaf spring
18 untere Kante von 20 20 Schwalbenschwanzprofil 22 Auflaufteil18 lower edge of 20 20 dovetail profile 22 overrun part
24 Zahnstange 24 rack
26 Zahnrad  26 gear
28 Mittel für Werkzeug 30 Schneidelement 28 Means for tools 30 cutting element
32 Arm 32 arm
32a Arm  32a arm
34 Arm  34 arm
36 Schneidglied  36 cutting link
38 Stromzuleitung  38 power supply
38a Stromzuleitung  38a power supply
40 Stromzuleitung  40 power supply
42 obere Kante von 20 44 Schuh  42 upper edge of 20 44 shoe
46 Stellschraube für 14a 48 Schalter  46 Set screw for 14a 48 switches
50 Kontaktglied 50 contact link
52 Feder  52 spring
54 Stromleitung 56 Profilschiene54 power line 56 profile rail
58 Leiste 58 bar
60 Kopfteil 60 headboard
62 Stegteil62 bridge part
64 Fussteil64 foot section
66 Ausnehmung66 recess
68 Fussteil68 foot section
70 Rastglied70 locking member
72 Feder 72 spring
74 Rille  74 groove
76 Stellschraube  76 set screw

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Vorrichtung zum thermischen Schneiden einer laufenden Materialbahn (2) aus thermoplastischem Material, mit mindestens einem mittels eines Befestigungsfusses (10, 10a) an einem Träger (6, 6a) angeordneten Schneidkopf (8, 8a, 8b), der ein in die Materialbahn (2) eintauchendes, beheiztes Schneidglied (36) aufweist, dadurch gekennzeichnet, dass der Befestigungsfuss (10, 10a) mittels einer Rastvorrichtung (14, 14a, 14b) am Träger (6, 6a) befestigt ist, deren Rückhaltekraft in Laufrichtung der Materialbahn (2) im wesentlichen der Kraft des bestimmungsgemässen Schneidwiderstandes des Schneidgliedes (36) an der Materialbahn (2) entspricht derart, dass das Schneidglied (36) bei nicht bestimmungsgemässem Schneidwiderstand an der Materialbahn (2) ausser Eingriff kommt. 1. Device for the thermal cutting of a running material web (2) made of thermoplastic material, with at least one cutting head (8, 8a, 8b) arranged on the carrier (6, 6a) by means of a fastening foot (10, 10a), which is inserted into the material web (2) has immersed, heated cutting element (36), characterized in that the fastening foot (10, 10a) is fastened to the carrier (6, 6a) by means of a latching device (14, 14a, 14b), the retention force of which in the running direction of the material web ( 2) corresponds essentially to the force of the intended cutting resistance of the cutting member (36) on the material web (2) in such a way that the cutting member (36) disengages from the material web (2) if the cutting resistance is not as intended.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rückhaltekraft der Rastvorrichtung (14a, 14b) einstellbar ist. 2. Device according to claim 1, characterized in that the retaining force of the latching device (14a, 14b) is adjustable.
3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass die Rastvorrichtung (14a) eine, vorzugsweise mittels einer Stellschraube (46) einstellbare Blattfeder (16, 16a) aufweist. 3. Device according to claim 1 and 2, characterized in that the latching device (14a) has a, preferably by means of an adjusting screw (46) adjustable leaf spring (16, 16a).
4. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass die Rastvorrichtung (14b) ein mittels einer Feder (72) vorgespanntes Rastglied (70) auf weist, dessen Federkraft vorzugsweise mittels einer Stellschraube (76) einstellbar ist. 4. The device according to claim 1 and 2, characterized in that the latching device (14b) has a latching member (70) biased by means of a spring (72), the spring force of which is preferably adjustable by means of an adjusting screw (76).
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Befestigungsfuss (10, 10a) im ausgerasteten Zustand verschwenkbar am Träger (6, 6a) angeordnet ist, vorzugsweise derart, dass der Schneidkopf (8, 8a, 8b) mittels eines an dem das Schneidglied (36) tragenden Schneidelement (30) angeordneten Schuhs (44) auf der Materialbahn (2) gleitet. 5. Device according to one of claims 1 to 4, characterized in that the fastening foot (10, 10a) in disengaged state is pivotably arranged on the carrier (6, 6a), preferably in such a way that the cutting head (8, 8a, 8b) is arranged on the material web (2.) by means of a shoe (44) arranged on the cutting element (30) carrying the cutting element (36) ) slides.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Schneidkopf (8a) einen elektrischen Schalter (48) für ein elektrisch beheiztes Schneidglied (36) aufweist, der im ausgerasteten Zustand der Rastvorrichtung (14a) die elektrische Leitung (54) unterbricht. 6. Device according to one of claims 1 to 5, characterized in that the cutting head (8a) has an electrical switch (48) for an electrically heated cutting member (36) which, in the disengaged state of the latching device (14a), the electrical line (54 ) interrupts.
7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Schneidkopf (8, 8a, 8b) auf der in Laufrichtung (4) der Materialbahn (2) gelegenen Seite des Trägers (6, 6a) und die Rastvorrichtung (14, 14a, 14b) auf der der Materialbahn (2) zugewandten Seite des Befestigungsfusses (10, 10a) angeordnet sind. 7. Device according to one of claims 1 to 6, characterized in that the cutting head (8, 8a, 8b) on the side of the carrier (6, 6a) and the latching device (14.) Located in the running direction (4) of the material web (2) , 14a, 14b) are arranged on the side of the fastening foot (10, 10a) facing the material web (2).
8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Schneidkopf (8, 8a) über eine Schwalbenschwanzführung (12) mit dem Träger (6) verbunden ist. 8. Device according to one of claims 1 to 7, characterized in that the cutting head (8, 8a) via a dovetail guide (12) is connected to the carrier (6).
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Träger (6, 6a) als Längsträger ausgebildet ist, an dem mehrere Schneidköpfe (8, 8a, 8b) vorzugsweise in Längsrichtung des Längsträgers verstellbar angeordnet sind. 9. Device according to one of claims 1 to 8, characterized in that the carrier (6, 6a) is designed as a longitudinal beam on which a plurality of cutting heads (8, 8a, 8b) are preferably arranged to be adjustable in the longitudinal direction of the longitudinal beam.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass am Träger (6, 6a) in Verschieberichtung des Schneidkopfes (8) eine Zahnstange (24) angeordnet ist, mit der ein im Befestigungsfuss (10, 10a) angeordnetes von Hand betätigbares Zahnrad (26) kämmt. 10. The device according to claim 9, characterized in that a rack (24) is arranged on the carrier (6, 6a) in the displacement direction of the cutting head (8), with which a manually operated gear (26.) Arranged in the fastening foot (10, 10a) ) combs.
11. Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das Schneidglied zur Durchtrennung einer Textilbahn, vorzugsweise Gewebebahn ausgebildet ist. 11. The device according to one of claims 1 to 10, characterized in that the cutting member is designed to cut through a textile web, preferably fabric web.
EP19900910512 1989-09-07 1990-07-24 Device for thermally cutting a travelling web of thermoplastic material Expired - Lifetime EP0441907B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3261/89 1989-09-07
CH326189 1989-09-07

Publications (2)

Publication Number Publication Date
EP0441907A1 true EP0441907A1 (en) 1991-08-21
EP0441907B1 EP0441907B1 (en) 1993-09-29

Family

ID=4252156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900910512 Expired - Lifetime EP0441907B1 (en) 1989-09-07 1990-07-24 Device for thermally cutting a travelling web of thermoplastic material

Country Status (3)

Country Link
EP (1) EP0441907B1 (en)
DE (1) DE3941254A1 (en)
WO (1) WO1991003592A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW203106B (en) * 1991-07-18 1993-04-01 Textilma Ag
JPH06502230A (en) * 1991-07-18 1994-03-10 テキスティルマ，アクチェンゲゼルシャフト Method and equipment for manufacturing tapes, especially patterned label tapes
IT236706Y1 (en) * 1995-03-03 2000-08-17 Giancarlo Saporiti DEVICE FOR CUTTING MATERIALS PARTICULARLY FABRICS RESISTANCE CONFIGURE FIXED WITH RIVETS
CH697695B1 (en) * 2003-02-06 2009-01-15 Textilma Ag Electrically-heated hot-blade cutter for running, patterned textile web, has adjustable blade with controller selection of cutting location
JP2009167569A (en) * 2008-01-18 2009-07-30 Tsudakoma Corp Retraction device and retraction method of electric heat cutter for loom

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2097352A5 (en) * 1970-07-03 1972-03-03 Sopara Thermoplastics cutting blade - with electrical resistance heating
DE2315333C3 (en) * 1973-03-28 1975-11-06 Seidenweberei Reutlingen Gerstenberg & Tritschler, 7410 Reutlingen Device for trimming the edges of textile webs
CH600027A5 (en) * 1976-10-20 1978-06-15 Mueller Jakob Forschungs Und F
DE3248574C2 (en) * 1982-12-30 1985-05-09 VTM Maschinen- und Apparatebau GmbH & Co KG, 4350 Recklinghausen Cross cutter for cutting through webs of film, e.g. in packaging machines
DE3422570A1 (en) * 1984-06-18 1985-12-19 Wilhelm Bilstein Spezialfabrik für Rundmesser und Plattenventile, 5063 Overath Blade holder for a shear blade on reel slitting machines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9103592A1 *

Also Published As

Publication number Publication date
EP0441907B1 (en) 1993-09-29
WO1991003592A1 (en) 1991-03-21
DE3941254A1 (en) 1991-03-14

Similar Documents

Publication Publication Date Title
DE2914748A1 (en) GAME ADJUSTMENT DEVICE FOR AN ENDOSCOPE
DE2823557A1 (en) ELASTIC RAIL MOUNTING ON A RAIL ON YOUR SUPPORT
DE2714125A1 (en) SKI BINDING PART
DE2757723C2 (en)
EP0441907A1 (en) Device for thermally cutting a travelling web of thermoplastic material.
DE3228803A1 (en) SKI BRAKE
EP0295237B1 (en) Switch operation device
CH675060A5 (en)
DE69201575T2 (en) Connecting device of a steering column adjustable in the axial direction with impact-functioning means.
DE2215258B2 (en) Current collector in electric motor vehicle - has pantograph link mechanism with support arm on axle of lever system fixed by bolts in slotted holes
EP0114913A1 (en) Bellows connection for vehicle bodies
EP0853697A1 (en) Device for producing preferably patterned textile strips, in particular strips of labels, from a broad web comprising meltable material
EP0001379B1 (en) Drum brake
EP0226535B1 (en) Weather-proof blind
DE2619673A1 (en) Ski brake with side brake lever - is swivelled downwards into braking positon pivoting about axis at right angles to longitudinal axis of ski
EP0532032A1 (en) Length adjustment device for a webbing system
EP0473893A1 (en) Cutting device for agricultural mower
DE2836685C2 (en) Self-adjusting drum brake
EP0827703B1 (en) Fitting for adjustable mounting of a front panel
CH657166A5 (en) DEVICE FOR PROTECTIVE WEAVING CHAIRS FOR INSERTING THE WIRE THREADS AT THE FABRIC EDGE.
DE3144497A1 (en) Window lifter, especially for motor vehicles
AT382519B (en) SAFETY SKI BINDING
DE7632457U1 (en) Upper edge bracket for a tiltable sash of a window, door or the like
DE3335993C2 (en)
DE2600850A1 (en) BRAKE DEVICE FOR SKIS

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910307

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE GB IT LI

17Q First examination report despatched

Effective date: 19920910

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE GB IT LI

REF Corresponds to:

Ref document number: 59002945

Country of ref document: DE

Date of ref document: 19931104

ITF It: translation for a ep patent filed

Owner name: JACOBACCI CASETTA & PERANI S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19931019

GBCC Gb: corrected translation (of claims) filed (gb section 80(3)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20080715

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080722

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090722

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090724

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090723

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090724

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100724