EP2119516B1 - Procédé de marquage de tôles et soudure en fonction du marquage de corps de récipients constitués de telles tôles - Google Patents

Procédé de marquage de tôles et soudure en fonction du marquage de corps de récipients constitués de telles tôles Download PDF

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Publication number
EP2119516B1
EP2119516B1 EP09006379.3A EP09006379A EP2119516B1 EP 2119516 B1 EP2119516 B1 EP 2119516B1 EP 09006379 A EP09006379 A EP 09006379A EP 2119516 B1 EP2119516 B1 EP 2119516B1
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EP
European Patent Office
Prior art keywords
welding
marking
single metal
sheet
sheets
Prior art date
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Active
Application number
EP09006379.3A
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German (de)
English (en)
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EP2119516A1 (fr
Inventor
Hanspeter Gysin
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.)
Soudronic AG
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Soudronic AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2676—Cans or tins having longitudinal or helical seams

Definitions

  • the invention relates to a method for producing Be Strukturerzargen according to the preamble of claim 1. Furthermore, the invention relates to a device for the production of Be dockerzargen according to the preamble of claim. 4
  • the individual sheets are stacked from the stack and fed to a round apparatus, which forms a rounded blank.
  • This is supplied to the welding apparatus of the machine, in which the longitudinal edges of the blank usually in overlapping position (or at best in stump position) are brought, after which the welding is carried out by roll seam welding usually with wire intermediate electrodes, which form the constantly renewing welding electrodes, which due the tinning of the sheets is advantageous.
  • the sheet rolls have at the edge of the sheet metal strip (rolled strip) production due to a higher tinning.
  • the tinning of the rolled strip in the middle may have a desired value of, for example, 1.0 g / m 2 ;
  • a narrow area with a too high tinning of eg 4.0 g / m 2 be present.
  • a different welding current is required during welding. For example, with 0.8 g / m2 tinning, a welding current of 4000 A may already be too high for high-quality welding, whereas with a tinning of 3 g / m2, a welding current of 4200 A may be necessary.
  • edge areas of the rolled strip therefore pose problems in the welding of container frames. This is particularly the case when the cutting of the metal sheets formed from the coil or rolled strip takes place so that the excessively tinned edge regions of the metal sheet in the case form the entire seam area (H-grain). In a different cutting position (C-grain), the edge areas of the metal sheet form the upper or lower edge of the frame blank, so that the higher tinning is disturbing only at the start of welding or at the end of the weld. However, this can also lead to Albertschweissungen, since just the start of welding and the welding are already critical areas of sweat.
  • AT 7297U1 shows a method for the cutting-optimized cutting of sheet metal parts from a sheet-metal strip, the cut is made across orders and the sheet metal parts are provided with order or commission numbers.
  • a cutting device with a printing device is shown.
  • GB 2123579A shows a cutting system with transport means, marking means and cutting means to mark sheets according to their sectional shape for later sorting.
  • the welding can be carried out coordinated to the respective coating thickness.
  • the detection of the marks takes place during or after the stacking of the individual sheets before they enter the round apparatus and rounded.
  • different welding parameters may be selected individually or in combination according to the coating, e.g. the welding pressure, the welding current with its current strength and / or current shape, the welding voltage and / or the welding current frequency.
  • the welding device has detection means which are able to recognize the markings and can accordingly act on the control of the welding machine, the welding parameter set suitable for the coating thickness can be selected.
  • the sheets in the welding apparatus can be processed differently due to the respective welding power requirement.
  • the markings are applied to the areas of the sheet material, of which production-related is known that the coating thickness deviates from the other areas of the sheet material.
  • the markings For tinned sheet metal rolled from a sheet metal roll, or for the sheets cut therefrom, these are the lateral edge regions.
  • the markers may have been applied in response to a coating thickness measurement such that the mark has been applied due to the measured actual coating thickness.
  • the markings have been applied during the production of the coated or tinned sheet, as long as it is still in strip form. In another option, this only happens when the long band is cut into individual metal sheets. In a further possibility, the application of the markers takes place only when the metal sheet is cut into the individual sheets.
  • the application of the markers is done with a marking substance invisible to the human eye, e.g. a visible only in ultraviolet light paint, paint, ink or a magnetic paint.
  • the marking can also be applied by a visible color or possibly marking.
  • FIG. 4 shows a schematic representation of a roller 37, which is formed by a rolled-rolled strip 36 of coated sheet metal.
  • a sheet coated with tin as it is used for the production of Be fiscalerzargen and in particular can bodies.
  • the rolled strip may be coated on both sides or only on one side.
  • the rolled strip may, for example, be 100 cm wide and, for example, have a length of 100 or more meters.
  • the tin could instead of tin plating also have any other known coating which is uneven over the width and / or length of the rolled strip.
  • the unevenness is generally such that the edge regions 38 and 39 of the rolled strip 36 have a significantly thicker tin layer than the remaining regions of the rolled strip.
  • the tinning on the edge about 3 times as thick as on the rest of the tape and eg in the middle, for example, 0.8 g / m2 amount, however, in the edge region of eg 1 cm wide 3.0 g / m2.
  • the cutting position is such that the width of the strips 7, 8, 9 corresponds in each case to the circumference of the container frame 30 formed from the individual sheets or determines their diameter, and the height h determines the height of the container frame 30 in accordance with the second section.
  • the edge regions 38 and 39 of the strips 7, 9 in the individual sheets formed therefrom form the seam region of the container frame 30.
  • the increased tinplate thickness in this area requires a different setting of the welding machine for good quality welding than for the sheets formed from the strip 8 and having no increased tinning along the seam area.
  • the increased tinning is present only at the beginning or end region of the weld at the can bodies formed from the sheet metal strips 7 and 9 (as an example 30 'from sheet 18').
  • this too can offer welding problems compared with the container frames formed from the middle metal strips 8, 8 'and 8 ".
  • FIG. 1 now shows a solution in which the individual sheets, which have an increased tinning in its edge region, are marked.
  • FIG. 1 schematically an angle cutting device 1 for the metal sheet 6 shown (the angle cutting device is also referred to as angle shears), which the sections according to variant I of FIG. 4 executing, in this example, only nine individual sheets are formed from each metal sheet 6 and not fifteen individual sheets as in FIG. 4 shown.
  • the angle shear 1 has in a known manner a pile receptacle for a stack of metal sheets 6. From this stack, in each case a sheet is stacked or pulled away and passed through a first cutting device 2 (which is usually provided with round, rotating cutting blades), which cuts the metal sheet 6 in the three metal strips 7, 8, 9.
  • a first cutting device 2 which is usually provided with round, rotating cutting blades
  • marking devices 4 and 5 are now provided which, when conveying a panel 6 towards the cutting device 2, provide the edge area 38 or 39 of the panel with a marking 20 or 21.
  • This marking may consist, for example, of a continuous application of paint in the form of a thin strip, as shown in FIG FIG. 1 is shown schematically with the broken lines 20 and 21.
  • the application of paint can be continuous in the form of a line or discontinuously in the form of individual dots or lines or other Symbols are applied, which are applied at a predetermined distance from each other on the plate.
  • the marking devices 4 and 5 can have corresponding nozzles for this purpose, which direct appropriate marking agent beams onto the metal sheet. Such markings 20 and 21 can be applied only on one side or on both sides of the sheet material of the metal sheet 6. As a result, individual sheets 10-18, of which the sheets 10-12 and 16-18, which have an increased edge-side tinning thickness, bear a marking 20 or 21. From the individual sheets of several panels thus formed, a stack 22 is formed. This contains sheets without marking and sheets with marking according to their respective edge tinning thickness.
  • the fixed position of the marking devices 4, 5 in front of the cutting device 2 is to be understood only as an example.
  • the marking devices may also be fixedly arranged after the cutting device, so that the cut sheet moves through them. Movable marking devices may also be provided downstream of the cutting device 3. The markings can be applied to the sheet on one or both sides.
  • the marking can be done accordingly for panels 6, according to the variant II of FIG. 4 be tailored.
  • the marking then preferably indicates the indication (eg by different colors or symbols) whether the increased tinplating thickness occurs at the beginning or at the end of the welded longitudinal seam of the container.
  • the marking can also be made in the formation of the rolled strip 36 or in its rolling to the roller 37.
  • the marking of the edge regions 38 and 39 also during the rolling of the rolled strip 36 of the roller 37th and cutting the individual panels 6 from the rolled strip.
  • the panels 6 then already have such markings 20 and 21, so that they are no longer applied in the angle shear 1 Need to become.
  • the angle shear has advantageously still the marking means 4 and 5, so that both types of panels 6 can be used.
  • the steps of rolled strip production and roll formation are usually carried out at the sheet metal manufacturer, which takes over the marking in this case.
  • the steps of unwinding the rolled strip and slitting the sheets are done separately, either also at the sheet metal manufacturer, who in turn handles the marking work, or at a frame manufacturer who performs this marking step in the panel making process.
  • the cutting of the metal sheets 6 to the individual sheets is usually carried out at the frame manufacturers, so that makes in this embodiment, the marking of the sheets.
  • container frames 30 are formed from the metal sheets.
  • FIGS. 2 and 3 schematically show corresponding devices in top view or from the side. From the stack 22 while individual sheets, the sheet 18 is shown as an example, stacked and promoted on a conveyor to a circular apparatus 24, which produces from the flat sheet a rounded frame blank 28, which is conveyed to the welding machine 25, in which the opposite Sheet edges of the blank are brought into overlapping or stumped position and welded by means of welding rollers 23 and 23 'and not shown wire electrodes in a known manner to the frame 30.
  • the frame blank 29 is located just between the welding rollers, wherein the lower welding roller 23 ', which is not visible per se, is also shown.
  • FIG. 3 In this case, the frame blank 29 is located just between the welding rollers, wherein the lower welding roller 23 ', which is not visible per se, is also shown.
  • the sheet 18 has the machine-readable mark 21, which is detected by a detector 26 which is designed to recognize the mark. Accordingly, the detector 36 provides via the signal line 31 a signal to the control device 27 of the welding machine 25 (or to a higher-level control, which is connected to the controller 27), depending on whether a sheet with marking or a sheet without marking passes through the detectors 26 and possibly 26 '. Accordingly, the welding machine control can determine whether or not the frame blank from the sheet 18 reaching the welding rollers 23, 23 'after a predetermined number of preceding blanks 28, 29 is provided with a high-thickness tinning along the weld. Accordingly, the welding parameters can be selected, in particular the welding current, ie its current, current shape and / or current frequency.
  • the welding pressure can be adjusted in addition or alternatively to the current accordingly.
  • These welding parameters are selected for the entire longitudinal seam of a container frame.
  • a single parameter or several parameters can only be selected for the start of welding or the end of welding.
  • the detectors 25, 26 ' may be located at any location on the device 35 where detection of the marks prior to welding is possible.
  • the arrangement shown in front of the round apparatus 24th is shown.
  • the marking may contain only a simple information, which merely consists in the fact that a tinning of increased thickness or that no such tinning of increased thickness or the normal tinning is present.
  • the marking also offers the possibility to give more precise information, for example, before applying the mark, a coating thickness measurement is carried out in a manner known in the art and the mark according to the measurement result different thickness specifications and thus can trigger different current parameters.
  • the marking device must be designed such that it opposes information from the coating thickness measurement take and process to perform the marking accordingly.
  • the marking device without coating thickness measurement, the marking device only has to deliver the marking substance continuously or discontinuously, possibly triggered by the leading edge of the sheet reaching into the region of the marking device.
  • the marking device can be stopped and restarted at the next plate, or it can go through to the last plate of the stack.
  • the marking can also indicate whether, in the case of cutting variant II, the welding parameter for the first or the last point should be changed.
  • the marking of different colors or only UV-visible paints or magnetic paints can be formed. Accordingly, the detector means 26, 26 'are designed to be able to recognize this kind of marking. Such agents are known in the art and need not be further explained here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Laminated Bodies (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Claims (5)

  1. Procédé pour la fabrication de corps de récipients (30) à partir de tôles individuelles (10-18) revêtues d'une face ou des deux faces, qui ont été formées d'un matériau de tôle (36, 37) revêtu sur une face ou les deux faces de manière non-uniforme et qui sont mises à disposition pour un traitement dans un dispositif de soudage, des marquages (20, 21) lisibles à machine ayant été appliqués au moins dans une région du matériau de tôle, sur une face ou les deux faces, indiquant des régions avec une épaisseur de couche élevée et/ou réduite, lesdites tôles étant arrondies et soudées pour la fabrication de corps de récipients, caractérisé en ce que les marquages lisibles à machine (20, 21) sur une tôle individuelle (10-18) sont détectés par machine avant le soudage et, dépendant de cela, des paramètres de soudage sont ajustés pour la tôle individuelle.
  2. Procédé selon la revendication 1, caractérisé en ce que les marquages sont détectés pendant ou après la décharge des tôles individuelles d'une pile et avant ou après l'arrondissement.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le soudage est effectué à l'aide d'un soudage par rouleaux avec des électrodes intermédiaires à fil et un ou plusieurs des paramètres pression de soudage, courant de soudage (intensité du courant et/ou forme du courant), tension de soudage, fréquence du courant de soudage sont ajustés comme paramètres de soudage.
  4. Dispositif (35) pour la fabrication des corps de récipient comprenant un dispositif de dépilage (33) pour des tôles individuelles, en aval un dispositif d'arrondissement (24) pour former un corps brute (28) et un dispositif de soudage (25) pour souder les arrêtes longitudinales du corps brute (28), caractérisé en ce que le dispositif (35) a des moyens de détection (26, 26') étant formés à détecter des marquages (20, 21) prédéterminés sur les tôles individuelles, et en ce que les moyens de détection (26, 26') sont opérationnellement connectés avec la commande (27) du dispositif de soudage (25) de sorte que des paramètres de soudage prédéterminés sont utilisables sur une tôle individuelle pendant la détection d'un marquage sur ladite tôle.
  5. Dispositif selon la revendication 4, caractérisé en ce que le dispositif de soudage (25) est un dispositif de soudage à rouleaux avec des électrodes intermédiaires à fil.
EP09006379.3A 2008-05-14 2009-05-12 Procédé de marquage de tôles et soudure en fonction du marquage de corps de récipients constitués de telles tôles Active EP2119516B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH7302008 2008-05-14

Publications (2)

Publication Number Publication Date
EP2119516A1 EP2119516A1 (fr) 2009-11-18
EP2119516B1 true EP2119516B1 (fr) 2013-07-17

Family

ID=41110934

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EP09006379.3A Active EP2119516B1 (fr) 2008-05-14 2009-05-12 Procédé de marquage de tôles et soudure en fonction du marquage de corps de récipients constitués de telles tôles

Country Status (4)

Country Link
US (1) US20090282887A1 (fr)
EP (1) EP2119516B1 (fr)
ES (1) ES2423938T3 (fr)
PT (1) PT2119516E (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704798A2 (de) * 2011-04-08 2012-10-15 Cosmobrain Ag Verfahren und Vorrichtung zum Herstellen von Dosenkörpern sowie Dosenkörper.

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654422A (en) * 1966-07-26 1972-04-04 Continental Can Co Square wave resistance welding
US3610862A (en) * 1969-01-31 1971-10-05 Continental Can Co Method and apparatus for resistance welding utilizing application of high pressure
US3584178A (en) * 1969-04-09 1971-06-08 Nat Can Corp Can body welding machine
JPS58192712A (ja) 1982-04-30 1983-11-10 Murata Mach Ltd 板金の切断システム
CH680200A5 (fr) * 1984-11-23 1992-07-15 Elpatronic Ag
FR2583317B1 (fr) * 1985-06-12 1987-09-11 Carnaud Emballage Sa Procede de fabrication d'un emballage cylindrique par soudage au moyen d'un faisceau laser et appareil pour la mise en oeuvre d'un tel procede.
EP0574670B1 (fr) * 1992-06-18 1996-12-11 Elpatronic Ag Procédé et dispositif pour former des tÔles en corps de boîtes et pour amener ceux-ci au soudage
TW227534B (fr) * 1992-06-29 1994-08-01 Elpatronic Ag
EP0646428A1 (fr) * 1993-09-30 1995-04-05 Elpatronic Ag Procédé et installation pour le revêtement intérieur et/ou extérieur de tôle, pour corps de boîtes en trois parties
EP0761368B1 (fr) * 1995-08-09 2000-02-02 Elpatronic Ag Procédé de soudage pour tôles revêtues, particulièrement en fer-blanc
ATE396797T1 (de) * 2000-01-20 2008-06-15 Rexam Aktiebolag Führungsvorrichtung für eine laser- markierungsanordnung
AUPR144100A0 (en) * 2000-11-13 2000-12-07 Amcor Packaging (Australia) Pty Ltd Process for can manufacture
AT7297U1 (de) 2003-09-18 2005-01-25 Heinz Ing Koelbl Verfahren für den zuschnitt von blechteilen
US20070235540A1 (en) * 2006-04-06 2007-10-11 Xerox Corporation Small field of view bar code reader
US7937233B2 (en) * 2008-04-17 2011-05-03 3M Innovative Properties Company Preferential defect marking on a web

Also Published As

Publication number Publication date
EP2119516A1 (fr) 2009-11-18
PT2119516E (pt) 2013-10-24
US20090282887A1 (en) 2009-11-19
ES2423938T3 (es) 2013-09-25

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