EP0441907A1 - Dispositif pour la coupe thermique d'une bande mobile en matiere thermoplastique. - Google Patents

Dispositif pour la coupe thermique d'une bande mobile en matiere thermoplastique.

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)
English (en)
Other versions
EP0441907B1 (fr
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/fr
Application granted granted Critical
Publication of EP0441907B1 publication Critical patent/EP0441907B1/fr
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).
EP19900910512 1989-09-07 1990-07-24 Dispositif pour la coupe thermique d'une bande mobile en matiere thermoplastique Expired - Lifetime EP0441907B1 (fr)

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 (fr) 1991-08-21
EP0441907B1 EP0441907B1 (fr) 1993-09-29

Family

ID=4252156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900910512 Expired - Lifetime EP0441907B1 (fr) 1989-09-07 1990-07-24 Dispositif pour la coupe thermique d'une bande mobile en matiere thermoplastique

Country Status (3)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW203106B (fr) * 1991-07-18 1993-04-01 Textilma Ag
WO1993002242A1 (fr) * 1991-07-18 1993-02-04 Textilma Ag Procede et installation pour la fabrication de bandes, en particulier de bandes d'etiquettes a motifs
IT236706Y1 (it) * 1995-03-03 2000-08-17 Giancarlo Saporiti Dispositivo per taglio di materiali particolarmente tessuti confilo di resistenza fissato con rivetti
CH697695B1 (de) * 2003-02-06 2009-01-15 Textilma Ag Schneidvorrichtung zum thermischen Schneiden einer laufenden, insbesondere gemusterten Textilbahn.
JP2009167569A (ja) * 2008-01-18 2009-07-30 Tsudakoma Corp 織機の電熱式カッタの退避装置およびその退避方法

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 (de) * 1973-03-28 1975-11-06 Seidenweberei Reutlingen Gerstenberg & Tritschler, 7410 Reutlingen Vorrichtung zum Beschneiden der Ränder von Textilbahnen
CH600027A5 (fr) * 1976-10-20 1978-06-15 Mueller Jakob Forschungs Und F
DE3248574C2 (de) * 1982-12-30 1985-05-09 VTM Maschinen- und Apparatebau GmbH & Co KG, 4350 Recklinghausen Querschneider zum Durchtrennen von Folienbahnen z.B. in Verpackungsmaschinen
DE3422570A1 (de) * 1984-06-18 1985-12-19 Wilhelm Bilstein Spezialfabrik für Rundmesser und Plattenventile, 5063 Overath Messerhalter fuer ein scherenschnittmesser an rollenschneidmaschinen

Non-Patent Citations (1)

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

Also Published As

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

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