EP2802439A1 - Procédé permettant de faciliter le détachement sur une feuille d'une tôle en feuille - Google Patents

Procédé permettant de faciliter le détachement sur une feuille d'une tôle en feuille

Info

Publication number
EP2802439A1
EP2802439A1 EP13700532.8A EP13700532A EP2802439A1 EP 2802439 A1 EP2802439 A1 EP 2802439A1 EP 13700532 A EP13700532 A EP 13700532A EP 2802439 A1 EP2802439 A1 EP 2802439A1
Authority
EP
European Patent Office
Prior art keywords
film
sheet
cut
acute
angled
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
EP13700532.8A
Other languages
German (de)
English (en)
Other versions
EP2802439B1 (fr
Inventor
Markus Wilhelm
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.)
Trumpf Werkzeugmaschinen SE and Co KG
Original Assignee
Trumpf Werkzeugmaschinen SE and Co KG
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 Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Publication of EP2802439A1 publication Critical patent/EP2802439A1/fr
Application granted granted Critical
Publication of EP2802439B1 publication Critical patent/EP2802439B1/fr
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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/12—Slitting marginal portions of the work, i.e. forming cuts, without removal of material, at an angle, e.g. a right angle, to the edge of the work
    • 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
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B26D3/085—On sheet material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/889—Tool with either work holder or means to hold work supply

Definitions

  • the present invention relates to a method for producing a film cut to a film of a foiled sheet by means of a film separating tool, which is moved with a tool tip on the sheet lying along a predetermined trajectory and thereby mechanically generates the film separation cut by displacing sheet material, as well as a coated foil processed by this method.
  • a film separation method for foiled sheets has become known, for example, by the so-called "TRUMPF film separating tool.”
  • Foil sheets are provided with a protective film which protects the sheet from damage during processing, storage and handling and usually only removes this immediately before further processing of the sheet becomes.
  • the known TRUMPF film separating tool has a ball rotatably mounted in a stamp, which is moved with a rolling movement on a foiled sheet and thereby separates the film without leaving scratches or marks on the sheet. More precisely, when machining the ball on the sheet surface, wherein the ball tip penetrates the film and then rolls on the sheet during the process on the sheet. In this way, the film is cut easily and quickly along the worn web. In particular, with the aid of the film separating tool, individual fields or segments can be separated on the film, which can then be removed manually from the metal sheet.
  • the separation gap created by the film dividing tool is inherently very narrow and therefore does not facilitate manual detachment of the film or of a film segment.
  • a special separating cut contour with one or more acute-angled cutting teeth is separated with the film separating tool.
  • a cutting tooth of ⁇ 90 °, preferably of ⁇ 45 ° without discontinuation of the film cutting tool, the foil is thrown up at the reversal point of the processing direction and thereby the corresponding acute-angled foil corner is detached Foil segments facilitated.
  • the detached foil corner thus represents a removal aid.
  • the tool tip is formed rotationally symmetrical and in particular formed by a rotatably mounted ball which is moved with a rolling movement on the sheet and thereby cuts the film.
  • the tool tip can also be formed by the needle tip of a pointed needle.
  • the film separating cut has a plurality of acute-angled serrations, which are lined up in a suitable sequence.
  • acute-angled prongs mean many detached foil corners, which are available as a removal aid.
  • they can each be connected to one another via curved cut-away sections, so that an uncontrolled tearing of the film is prevented during the subsequent removal of the film or the film segment.
  • the film-cutting section has at least one zigzag section with a plurality of oppositely directed, pointed-angled serrations. If the points are short and close enough to each other, the film lifts on both sides of the two opposing teeth rows, so that a continuous separation gap is formed, which is wider than the actual film cut.
  • the film separation section can either be formed at a distance from the outer edges of the film or at the segment edges of a film segment cut off on the film, or extend on one or both sides in each case to an outer or segment edge. In the latter case, it is advantageous if the film separation cut asymptotically or at an acute angle in the outer or edge of the segment to prevent uncontrolled tearing of the film or the film segment when peeled off.
  • the trepanning section cutting the acute-angled tine can be carried out either as a single continuous cut, ie without lifting the film tapping tool from the sheet, or through two discontinuous cuts, of which the last cut made either begins in the cut nip of the first cut or at least partially therein runs.
  • the invention also relates, in a further aspect, to a foiled sheet processed by this method and having at least one film separating cut, wherein according to the invention the film cutting cut has at least one pointed angled edge and the associated acute-angled foil corner is detached from the metal sheet.
  • the invention further relates to a sheet metal working machine according to claim 18, a computer program product according to claim 19 and a CAD / CAM system for creating an NC program for the sheet metal working machine.
  • FIG. 1 shows a foiled sheet with a plurality of mutually separate Foliensegmen- th, each having different inventive film dividing cuts to form a detached from the sheet foil corner;
  • FIG. 2 shows a longitudinal section of a known film separating tool for producing the film separating cuts shown in FIG. 1
  • FIG. 3 shows a longitudinal section of a further known film separating tool for producing the film separating cuts shown in FIG. 1;
  • Fig. 5 shows a further foiled sheet with a plurality of separate foil segments, each having further inventive film separation cuts to form a detached from the sheet foil corner.
  • FIG. 2 shows a known foil-separating tool 20 for foiled sheets 1, that is to say for sheets 2 which are provided with a foil 3 for protection against damage.
  • the film release tool 20 serves to generate a film separation cut 24 on the film 3 of the foiled sheet 1, without leaving scratches or marks on the sheet 2.
  • the film separating tool 20 has a blunt tool tip in the form of a ball 22 rotatably mounted in a punch 21, which is moved with a rolling movement on the foiled sheet 1, thereby severing the film 3. More precisely, the ball 22 penetrates the film 3 and, when the film-separating tool 20 is moved over the foiled sheet 1 in the direction A, rolls on the sheet 2, thereby mechanically producing the film-separating cut 24 by displacing sheet material along the worn web ,
  • FIG. 3 shows another known film-separating tool ("film-tearing tool”) in the form of a tapered needle 30.
  • the needle 30 is moved on the foiled sheet 1, thereby severing the film 3. More precisely, the needle tip 31 penetrates the film 3 and When the needle 30 is moved over the foiled sheet 2 in the direction A, the film separation cut 32 is generated mechanically by displacing sheet material along the trajectory 12. If the needle tip 31 is made of a softer material than the sheet, eg brass, there are no scratches on the Sheet 2. If 2 scratches are not relevant to the sheet, a needle tip 31 made of a harder material than the sheet can be used.
  • FIG. 1 shows a foiled sheet 1 in whose foil 3 six square foil segments 5a-5f are each separated by means of a self-contained separating gap 6. If, e.g. Welding work to be performed at certain processing points, then only needs to be manually removed at those processing points, the respective film segment. However, at a ball diameter of less than 1 mm, the separation gap 6 formed with the film dividing tool 20 is very narrow (smaller than 0.5 mm) and thus does not facilitate manual peeling of a film segment.
  • each of the foil segments 5a-5f has at least one foil corner 7a-7f detached from the sheet 2, which can be grasped manually.
  • These detached foil corners 7a-7f are formed in the respective foil segment 5a-5f as follows:
  • an additional film separation section 8a-8f which has at least one acute-angled point 9a-9f, is in each case embodied with the film dividing tool 20.
  • an acute angle of ⁇ 90 °, preferably of ⁇ 45 ° without discontinuation of the film separating tool 20 occurs at the reversal point of the processing direction, ie at the point of the spike, to a raising of the film 3.
  • the film-separating section 8a-8c, 8e, 8f extends only on one side to the separating gap 6, that is to the segment edge of the film segment 5a, and at an acute angle ⁇ 90 ° in the segment edge over to prevent uncontrolled tearing of the film or the film segment during peeling.
  • the film dividing cut can also extend on both sides to the segment edge of the film segment.
  • the film-separating cut 8 a has three indentations 9 a in the same direction at an acute angle, which are connected to each other via arch-shaped separating cut sections 10. Overall, therefore, three detached foil corners 7a are present.
  • the film-separating cut 8b has two pointed angles 9b in opposite directions, which are each connected to one another via an S-shaped separating cut section 11. Overall, therefore, two detached foil corners 7b are present.
  • the film-separating section 8c has a zigzag section 12 with a plurality of mutually juxtaposed, oppositely opposing acute-angled serrations 9c, whereby a plurality of detached foil corners 7c are formed.
  • the film-separating section 8b has a single acute-angled point 9d between two S-shaped curve sections 11.
  • the film separation section 8d is spaced on both sides of the segment edge, that is, completely formed within the film segment 5d.
  • the film separation section 8e has a zigzag section 12, the serrations 9e are so acute and are arranged side by side, that between the detached foil corners 7e of the two opposing teeth rows 13a, 13b, a continuous separation gap 14 is present, the wider than the Folientrennrough 8e of the film separating tool 20 is.
  • the detached on both sides of the separation gap 14 foil corners 7e each form a film edge, which can be used as a dressing aid.
  • two separate film cut sections 8f are provided, each having an acute-angled tine 9f and an S-shaped separating cut section 11 extending to the edge of the segment. Overall, therefore, two detached foil corners 7f are present.
  • FIG. 4 shows a numerically controlled sheet-metal processing machine 40 with which the above-described separating cuts with acute-angled teeth can be carried out on a foiled sheet 1.
  • This sheet-metal working machine 40 comprises a workpiece support 41 for laying a foiled sheet 1, a workpiece moving device 42 for moving the foiled sheet 1 resting on the workpiece support 41 in the x and y directions, a tool holder 43 movable in the z direction and holding the film separating tool 20, 30, and one only schematically indicated NC machine control 44, which is programmed by means of an NC program, the actuators of the workpiece moving device 42 and the tool holder 43 to execute the above-described cuts with acute-angled prongs on the foiled sheet 1 to control.
  • FIG. 5 shows a further foiled sheet 1, in the foil 3 of which four square foil segments 5g-5j are each separated by means of a separating gap 6 which is closed in itself.
  • each of the foil segments 5g-5j has at least one foil corner 7g-7j detached from the sheet 2, which can be grasped manually.
  • an additional foil separation cut 8g-8j is in each case carried out within the foil segments 5g-5j with the foil dividing tool 20, which has an acute-angled tine 9g-9j with an acute angle of ⁇ 90 °, preferably of ⁇ 45 °, having.
  • the foil 3 is thrown open.
  • the associated acute-angled foil corner 7g-7j separates from the plate 2 and stands up as a removal aid.
  • the film separation section 8g has an acute-angled point 9g, which are formed by two mutually facing arcuate separating cut sections 8gi, 8g 2 , which are pointed or asymptotic to one another and meet in the point of the point.
  • the two separating cut sections 8gi, 8g 2 can be cut as a continuous cut, ie without lifting off the film separating tool 20, whereby at the point of reversal of the processing direction, ie at the point of the serration, the film 3 comes up and thereby the acute-angled foil corner 7g of FIG Detach sheet metal 2 and stand up as a peel-off aid.
  • the two separating cut sections 8gi, 8g 2 can also be two non-contiguous cuts, the last cut (eg the separating cut section 8g 2 ) starting in the cutting gap of the first cut cut section 8gi and extending away in the cutting direction 15 away from the pointed tip.
  • the film separation section 8h has an acute-angled tine 9h, which is formed by two mutually facing arcuate separating cut sections 8hi, 8h 2 , which touch each other at an intersection and continue on both sides of this intersection.
  • the two separating cut sections 8hi, 8h 2 are two discontinuous cuts, the last one executed section (eg the separating cut section 8h 2 ) from the cutting direction 15, that is, from the side of the point of intersection to be detached 7h comes and partially in the kerf of the first running cut section 8h-i runs.
  • the film dividing section 8i of the film segment 5i differs only in that here only the one separating cut section 8ii is arcuate and the other separating cut section 8h 2 is straight.
  • the film dividing section 8j of the film segment 5j differs only in that here the straight dividing section is formed by the dividing nip 6 and the arcuate dividing section 8j begins in the dividing nip 6 and is then carried out in the direction 15 to peel the film corner 7j.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Materials For Medical Uses (AREA)

Abstract

L'invention concerne un procédé permettant de produire une coupe de séparation (8a-8j) sur une feuille (3) d'une tôle (1) en feuille au moyen d'un outil de séparation de feuille (20 ; 30) dont une pointe d'outil (22 ; 31) se trouvant sur la tôle (2) est déplacée le long d'une trajectoire prédéterminée et produit ainsi la coupe de séparation de feuille (8a-8j) en pénétrant dans le matériau de la feuille. Selon l'invention, la coupe de séparation de feuille (8a-8j) présente au moins un pic à angle aigu (9a-9j) pour la formation d'au moins un coin de feuille (7a-7j) détaché de la tôle (2).
EP13700532.8A 2012-01-10 2013-01-09 Procédé destiné à créer une aide au détachement d'un film appliqué sur une tôle Not-in-force EP2802439B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012200240A DE102012200240A1 (de) 2012-01-10 2012-01-10 Verfahren zum Erzeugen einer Abziehhilfe an einer Folie eines folierten Blechs
PCT/EP2013/050292 WO2013104662A1 (fr) 2012-01-10 2013-01-09 Procédé permettant de faciliter le détachement sur une feuille d'une tôle en feuille

Publications (2)

Publication Number Publication Date
EP2802439A1 true EP2802439A1 (fr) 2014-11-19
EP2802439B1 EP2802439B1 (fr) 2016-07-27

Family

ID=47563475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13700532.8A Not-in-force EP2802439B1 (fr) 2012-01-10 2013-01-09 Procédé destiné à créer une aide au détachement d'un film appliqué sur une tôle

Country Status (6)

Country Link
US (1) US10131068B2 (fr)
EP (1) EP2802439B1 (fr)
CN (1) CN104039516B (fr)
DE (1) DE102012200240A1 (fr)
PL (1) PL2802439T3 (fr)
WO (1) WO2013104662A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111231490B (zh) * 2020-01-08 2022-04-15 上海赛摩电气有限公司 一种覆膜板自动撕膜装置及方法

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US2188310A (en) * 1937-08-11 1940-01-30 Charles S Price Sheet of stars and method of manufacture
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US4373412A (en) * 1980-07-10 1983-02-15 Gerber Garment Technology, Inc. Method and apparatus for cutting sheet material with a cutting wheel
US4401001A (en) * 1980-07-10 1983-08-30 Gerber Garment Technology, Inc. Apparatus for cutting sheet material with a cutting wheel
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DE202005011908U1 (de) * 2005-07-29 2005-10-13 Pass Stanztechnik Ag Rollenwerkzeug zum Schneiden einer auf einem Werkstück aufgebrachten Folie sowie Schneidvorrichtung mit einem derartigen Rollenwerkzeug
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DE102007008554A1 (de) * 2007-02-21 2008-08-28 Welser Profile Ag Verfahren und Vorrichtung zum Herstellen von Profilen
DE502007005140D1 (de) * 2007-06-30 2010-11-04 Trumpf Werkzeugmaschinen Gmbh Maschine zum Bearbeiten von Werkstücken und Verfahren zum maschinellen Bearbeiten von Werkstücken
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Also Published As

Publication number Publication date
WO2013104662A1 (fr) 2013-07-18
CN104039516B (zh) 2016-11-23
PL2802439T3 (pl) 2017-01-31
CN104039516A (zh) 2014-09-10
US20140322556A1 (en) 2014-10-30
US10131068B2 (en) 2018-11-20
DE102012200240A1 (de) 2013-07-11
EP2802439B1 (fr) 2016-07-27

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