EP3019287B1 - Method for producing annular parts, and use of said method - Google Patents
Method for producing annular parts, and use of said method Download PDFInfo
- Publication number
- EP3019287B1 EP3019287B1 EP13737525.9A EP13737525A EP3019287B1 EP 3019287 B1 EP3019287 B1 EP 3019287B1 EP 13737525 A EP13737525 A EP 13737525A EP 3019287 B1 EP3019287 B1 EP 3019287B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- cutting
- machine
- spool
- head
- 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.)
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Links
- 238000000034 method Methods 0.000 title claims description 41
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000003466 welding Methods 0.000 claims description 35
- 238000005520 cutting process Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000013000 roll bending Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 description 6
- 239000007858 starting material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0815—Making tubes with welded or soldered seams without continuous longitudinal movement of the sheet during the bending operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0085—Joining ends of material to continuous strip, bar or sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
- B21C47/247—Joining wire or band ends
-
- 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
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
Definitions
- the present invention relates to a method for producing annular or tubular parts according to the preamble of claim 1, in particular a method for cutting, rounding and welding of thin steel strip from a coil and an application of the method.
- the invention presented here describes a method which makes it possible, in a continuous processing process, to cut thin-walled, sheet-like starting material to the desired dimensions by means of the same equipment - a combination machine - in a first subprocess, then round it in a second subprocess and finally in a third subprocess to be provided with a welded longitudinal seam.
- This results in lower investment costs for machines and there are also lower variable costs in the operation of such an inventive plant, as in production with changing production lots no Tools need to be changed.
- this innovative process results in a favorable cost - benefit ratio for such end products which do not demand very high requirements from the tolerances, for example for drums of washing machines or dishwashers.
- Fig. 1 shows a schematic representation of the production of annular parts according to the prior art.
- Thin plate is supplied from a decoiler 1 in the form of a coil 7 of the cutting machine 2, where the sheet 10 is cut to the required initial dimension.
- the metal sheet 10 is subjected to a mechanical and / or thermal rounding process in one or more steps in a rounding machine 3, so that an annular open workpiece 34 with two longitudinal edges 29a, 29b is produced which is then welded together in a welding machine 4 by means of a weld seam 36 are formed, whereby an annular part 35 is formed, which is optionally further processed in an additional processing step by means of an expansion machine 5.
- Fig. 2 shows, again in a schematic representation, the inventive production of annular parts.
- thin sheet metal having a thickness in the range of 0.4 mm to 1 mm from a decoiler 1 in the form of a coil 7 is continuously supplied to the combination machine 9, wherein the workpiece is fed into one and the same combination machine 9 via a roller mechanism, clamped, conveyed on the required initial dimension is cut, formed on a rotary rounding machine into an annular or cylindrical part, welded and thus provided with a longitudinal seam 36.
- annular member 35 is automatically or manually removed from the combination machine 9 via a mechanism.
- an additional processing in an expansion machine 5 can take place in an additional work step.
- FIG. 3 shows a cross section of the combination machine according to the invention 9 for producing annular parts 35, wherein the workpiece 16 automatically fed in the conveying direction F of the combination machine 9 and on the guide rollers 19a and the roller guides 18a, 18b and the feed rollers 19b between the clamping device 22 through to the Feed roller 15 is also promoted.
- the coil start piece 27 usually has an unsuitable for optimal welding, non-straight edge 30 and is therefore fixed by means of the clamping device 22 and cut by means of integrated in the carrier 17 cutting head 24 and deposited in a garbage 11a, 11b, or promoted via flap 20 from the machine, wherein by cutting on the first good piece 31, a straight welding edge 29a is formed.
- the workpiece 16 after opening the clamping device 22 further promoted to the rotary tool 21 to the holding device 14 at the end of the rotatable magnetic beam 13, wherein the front end of the workpiece 16 by pneumatic and / or magnetic Force action is held by means of the holding device 14 and is further promoted by means of rotating in the direction of rotation R round tool 21.
- Fig. 4 shows in a further cross-section of a combination machine according to the invention 9, wherein the workpiece 16 in comparison with the in Fig. 3 shown position by a half turn in the direction of rotation R has been further promoted and has an approximately semicircular cross-section.
- a further half turn in the direction of rotation R so that the workpiece 16 has the desired extent and can now be fixed by exerting a force by means of the clamping device 22 so that by means of cutting head 24, the rounded, slightly elliptical Workpiece 34 can be separated from the coil 7 to form two straight welding edges 29a, 29b and forming a gap B.
- the gap B between the two welding edges 29a, 29b is closed to a small residual gap wherein the workpiece 34 is deformed with a slightly elliptical cross-section to an annular workpiece 35 with a circular cross-section and then fixed by means of the clamping device 22, after which the force on the holding device 14 can be reduced or repealed.
- the two straight welding edges 29a, 29b are firmly joined together by means of longitudinal seam welding, and the annular workpiece 35 can are then removed by a not-shown removal mechanism from the combination machine 9.
- Fig. 5 shows the carrier 17 of the combination machine according to the invention with an integrated cutting and welding device in longitudinal section, wherein the source 23, preferably a laser source is designed switchable so that they either with the displaceable in the transverse direction Q cutting head 24 or with the also displaceable in the transverse direction Q welding head 25 is mechanically and electrically connected, and is also configured with a feeder 26 for additional material with the purpose to fill the gap resulting from the joining of two edges when welding with additional material as needed and thus close the residual gap, whereby an optimal weld can be made can.
- the source 23 preferably a laser source is designed switchable so that they either with the displaceable in the transverse direction Q cutting head 24 or with the also displaceable in the transverse direction Q welding head 25 is mechanically and electrically connected, and is also configured with a feeder 26 for additional material with the purpose to fill the gap resulting from the joining of two edges when welding with additional material as needed and thus close the residual gap, whereby an optimal weld can be made can.
- the workpiece 16 is guided between the upper and the lower part of the clamping device 22, wherein the mismatch rollers 12 serve to compensate for any arising mismatch of the two Greekzuschweissenden edges of the workpiece 16 and thus to allow an additional increase in the quality of welding.
- Fig. 6 3 shows a schematic representation of a coil 7 from which, in a first processing step, the coil starting piece 27, which has a non-straight edge 30, was cut off and from which, in a second processing step, a first good piece 31 with the straight welding edges 29a, 29b was cut off. Furthermore, the coil end piece 28 is with the non-straight Edge 30, the last good piece 32 of the coil 7 and the penultimate good piece 33 shown, each with the two straight welding edges 29a, 29b.
- Fig. 7 shows a slightly elliptical workpiece 34 produced by the innovative method in the combination machine 9 after cutting and rounding but before welding, and an annular part 35 after cutting, rounding and welding, applied to the longitudinally welded weld 36th
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von ringförmigen oder rohrförmigen Teilen nach dem Oberbegriff von Anspruch 1, insbesondere ein Verfahren zum Schneiden, Runden und Schweissen von dünnem Stahlband ab einem Coil sowie eine Anwendung des Verfahrens.The present invention relates to a method for producing annular or tubular parts according to the preamble of
Allgemein bekannt ist, dass bei Verfahren zur Herstellung von rohrförmigen, zylinderförmigen oder ringförmigen Gegenständen aus ebenen oder aus aufgewickelten Ausgangsmaterialien mehrere aufwändige Arbeitsschritte notwendig sind, um erstens das Zuschneiden auf die gewünschten Ausgangsdimensionen durchzuführen, zweitens um die gewünschte Biegung als Summe von mehreren Teilbiegeprozessen zu erreichen und drittens um das gerundete Teil mittels einer geschweissten Längsnaht zu versehen, wodurch dann das fertige rohrförmige Produkt entsteht. Ein wesentlicher Nachteil der bekannten Biegeverfahren liegt darin, dass die geforderte Formgenauigkeit auch bei der Aufteilung des ganzen Biegeprozesses auf mehrere einzelne Biegeschritte oft nicht oder nur mit beträchtlichem mechanischem und elektronischem Aufwand erreicht werden kann. Die bekannten Rundbiegeverfahren sind für einen vollautomatischen Einsatz in Fertigungsstrassen nur bedingt geeignet, weil insbesondere bei einem Produktwechsel infolge Werkzeugwechsel die auf Grund der aufwändigen Formprozesse bereits relativ langen Maschinenzeiten weiter erhöht werden und damit die Wirtschaftlichkeit weiter reduziert wird.It is generally known that in processes for the production of tubular, cylindrical or annular articles from flat or wound starting materials, several expensive operations are necessary to firstly cut to the desired initial dimensions, secondly to achieve the desired bend as the sum of several partial bending processes and third, to provide the rounded part by means of a welded longitudinal seam, whereby the finished tubular product is formed. A major disadvantage of the known bending method is that the required dimensional accuracy even when dividing the entire bending process on several individual bending steps often can not be achieved or only with considerable mechanical and electronic effort. The known round bending process are only partially suitable for fully automatic use in production lines, because in particular in a product change due to tool change due to the complex molding processes already relatively long machine times are further increased and thus the profitability is further reduced.
Bekannte Verfahren zum Formen von Blechen sind das klassische Zweiwalzen- oder das Dreiwalzen-Biegeverfahren - auch Runden genannt. Nachteilig bei diesen Verfahren ist, dass unterschiedliche Rohrdurchmesser ein Auswechseln von Teilen der Vorrichtung - insbesondere der Spannwerkzeuge - erfordert, womit auch die Wirtschaftlichkeit der Anlage abnimmt. Eine Erfindung, welche für unterschiedliche Rohrdurchmesser das Auswechseln von Teilen der Vorrichtung vermeidet, ist in der Patentschrift
In der Patentschrift
Es ist offensichtlich, dass diese vorgängig erwähnten Verfahren mit einem nicht unerheblichen Aufwand verbunden sind. Es liegt der vorliegenden Erfindung daher die Aufgabe zu Grunde, ein Verfahren anzugeben, das die vorstehend genannten Nachteile nicht aufweist.
Diese Aufgabe wird durch die in Anspruch 1 angegebenen Merkmale gelöst. Vorteilhafte Ausführungsvarianten sind in den abhängigen Ansprüchen angegeben.
Die hier vorgestellte Erfindung beschreibt ein Verfahren das es erlaubt, in einem kontinuierlichen Verarbeitungsprozess dünnwandiges, blechförmiges Ausgangsmaterial mittels demselben Equipment - einer Kombimaschine - in einem ersten Subprozess auf die gewünschten Dimensionen zu schneiden, anschliessend in einem zweiten Subprozess zu runden und zuletzt in einem dritten Subprozess mit einer geschweissten Längsnaht zu versehen. Dadurch entstehen geringere Investitionskosten für Maschinen und es entstehen auch geringere variable Kosten im Betrieb einer solchen erfinderischen Anlage, da in der Produktion bei sich ändernden Produktionslosen keine Werkzeuge gewechselt werden müssen. Insgesamt ergibt sich mit diesem innovativen Verfahren ein günstiges Kosten - Nutzen Verhältnis für solche Endprodukte, die von den Toleranzen her nicht sehr hohe Anforderungen verlangen, beispielsweise für Trommeln von Waschmaschinen oder von Geschirrspülmaschinen.
It is obvious that these previously mentioned methods are associated with a not inconsiderable expense. It is therefore an object of the present invention to provide a method which does not have the abovementioned disadvantages.
This object is achieved by the features specified in
The invention presented here describes a method which makes it possible, in a continuous processing process, to cut thin-walled, sheet-like starting material to the desired dimensions by means of the same equipment - a combination machine - in a first subprocess, then round it in a second subprocess and finally in a third subprocess to be provided with a welded longitudinal seam. This results in lower investment costs for machines and there are also lower variable costs in the operation of such an inventive plant, as in production with changing production lots no Tools need to be changed. Overall, this innovative process results in a favorable cost - benefit ratio for such end products which do not demand very high requirements from the tolerances, for example for drums of washing machines or dishwashers.
Die vorliegende Erfindung wird im Folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf Zeichnungen weiter erläutert. Dabei zeigen:
- Fig. 1
- eine schematische Darstellung zur Herstellung von ringförmigen Teilen gemäss Stand der Technik,
- Fig. 2
- eine schematische Darstellung zur erfindungsgemässen Herstellung von ringförmigen Teilen,
- Fig. 3
- ein erster Querschnitt einer erfindungsgemässen Kombimaschine zur Herstellung von ringförmigen Teilen,
- Fig. 4
- ein zweiter Querschnitt einer erfindungsgemässen Kombimaschine zur Herstellung von ringförmigen Teilen,
- Fig. 5
- ein Längsschnitt einer erfindungsgemässen Kombimaschine zur Herstellung von ringförmigen Teilen,
- Fig. 6
- eine schematische Darstellung eines Coils mit dem Coil-Anfangsstück und dem Coil-Endstück sowie
- Fig. 7
- ein ringförmiges Werkstück hergestellt mit einer erfindungsgemässen Kombimaschine.
- Fig. 1
- a schematic representation of the production of annular parts according to the prior art,
- Fig. 2
- a schematic representation of the inventive production of annular parts,
- Fig. 3
- a first cross section of a combination machine according to the invention for the production of annular parts,
- Fig. 4
- a second cross section of a combination machine according to the invention for the production of annular parts,
- Fig. 5
- a longitudinal section of a combination machine according to the invention for the production of annular parts,
- Fig. 6
- a schematic representation of a coil with the coil start piece and the coil end piece and
- Fig. 7
- an annular workpiece produced with a combination machine according to the invention.
Anschliessend wird das ringförmige Teil 35 über einen Mechanismus automatisch oder manuell aus der Kombimaschine 9 entnommen. Optional kann bei diesem Verfahren in einem zusätzlichen Arbeitsschritt eine Weiterverarbeitung in einer Expansionsmaschine 5 erfolgen.Subsequently, the
Anstelle der Zuführung des Ausgangsmaterials ab einem Coil 7 ist alternativ in einer nicht erfindungsgemässen Ausführung auch die Zuführung von vorgeschnittenen Platten 8 erwähnt.
Claims (9)
- Method for processing a thin steel strip with a thickness in the range of preferably 0.4 mm to 1 mm, which is continually supplied from a spool (7), to yield tools, particularly for roll bending substantially flat, sheet-shaped initial material to yield substantially tubular or annular objects like drums or other preferably cylindrical objects or the like, wherein the processing method is influenced and monitored by at least an operator from at least one operating station and wherein the workpiece (16) is conveyed continually from a spool (7) by means of an electronic control unit, is first supplied to an aligning tool and subsequently is processed in a combination machine (9) in at least three further process steps, wherein, after creating a straight welding edge (29a) by cutting the initial spool part (27), which is placed in the at least one scrap bin (11a, 11b), the tool is subjected to a rounding process in such a way that the workpiece (16) is fixed by a holding device (14) by applying a force and is conveyed continually by means of a rotatable rounding tool (21) until the entire circumferential length is reached and is subjected during a second processing step to a cutting tool, thereby generating two straight welding edges (29a, 29b) at the cutting position, and during a third processing step is subjected to a welding process, wherein a first welding edge (29a) is welded to a second welding edge (29b) in such a way that an annular part (35) is produced with a welding seam (36) and the annular part (35) is ejected from the combination machine (9) by means of an extraction mechanism or is manually removed, characterized in that the three steps for processing the workpiece (16), the cutting in the cutting machine (2) and the rounding in the rounding machine (3) and the welding in the welding machine (4) are carried out with the same equipment in a combination machine (9).
- Method according to claim 1, characterized in that the cutting and the welding are performed in the combination machine (9) preferably by means of a laser method or by means of a plasma method.
- Method according to claim 1 or 2, characterized in that the welding head (25) and the cutting head (24) are arranged at the same gantry on a support (17), wherein the welding head (25) and the cutting head (24) are each shiftable in horizontal and vertical direction.
- Method according to claim 3, characterized in that the welding and the cutting are performed by means of a combined head.
- Method according to the claims 1 - 4, characterized in that at least in case a laser method is used the welding head (25) and the cutting head (24) use one and the same source (23), however preferably not exclusively one laser source.
- Method according to the claims 1 - 5, characterized in that the welding is performed with or without supply of additional material.
- Method according to the claims 1 - 6, characterized in that the initial spool part (27) of the spool (7) generated during the first cut is placed into a first scrap bin (11a) and the end spool part (28) of the spool (7) generated during the last cut is placed into a second scrap bin (11b).
- Method according to the claims 1 - 7, characterized in that the welding edges (29a, 29b) have for example but not exclusively a saw tooth shape or wave shape.
- Use of the method according to the claims 1 - 8 for manufacturing drums for a washing machine or a dishwasher or the like.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2013/000120 WO2015003276A1 (en) | 2013-07-08 | 2013-07-08 | Method for producing annular parts, and use of said method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3019287A1 EP3019287A1 (en) | 2016-05-18 |
EP3019287B1 true EP3019287B1 (en) | 2017-05-17 |
Family
ID=48793845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13737525.9A Active EP3019287B1 (en) | 2013-07-08 | 2013-07-08 | Method for producing annular parts, and use of said method |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160136703A1 (en) |
EP (1) | EP3019287B1 (en) |
CN (1) | CN105555430A (en) |
WO (1) | WO2015003276A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108480881A (en) * | 2018-03-21 | 2018-09-04 | 鞍钢未来钢铁研究院有限公司 | A kind of cold-rolled steel coils core welding method based on articulated robot |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6877097B2 (en) * | 2016-06-28 | 2021-05-26 | 昭和アルミニウム缶株式会社 | Manufacturing method for printing equipment and beverage cans |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3215107A (en) * | 1962-07-05 | 1965-11-02 | Reynolds Metals Co | Production of containers by formation of slits and holes in strip material |
US3285490A (en) * | 1963-06-25 | 1966-11-15 | Wallace Expanding Machines | Apparatus for making tubular members |
US3578935A (en) * | 1969-02-10 | 1971-05-18 | Stampco Inc | Automatic drum-forming machine |
US3662940A (en) * | 1969-05-13 | 1972-05-16 | Grotnes Machine Works Inc | Method and apparatus for forming cylinders from strip material |
US3675460A (en) * | 1970-06-08 | 1972-07-11 | Torin Corp | Four-slide machine with improved mandrel for producing bearings and the like |
US4073260A (en) * | 1976-04-19 | 1978-02-14 | British Steel Corporation | Apparatus for removing cross welds from metal tubes and marking the same |
CA1033199A (en) * | 1978-01-16 | 1978-06-20 | Cyril J. Astill | Method of producing seam welded tube |
JPS6076220A (en) * | 1983-10-03 | 1985-04-30 | Furukawa Electric Co Ltd:The | Manufacture of metallic small tube |
US4911209A (en) * | 1989-03-15 | 1990-03-27 | Expo Wire Company | Method and apparatus for forming wire mesh cages |
IT1256688B (en) * | 1992-03-04 | 1995-12-12 | Lara Consultants Srl | PROCEDURE FOR THE CREATION OF STRUCTURAL MANUFACTURES THROUGH, COMBINED PROCESSING OF CUTTING AND WELDING, EQUIPMENT FOR THE EXECUTION OF SUCH PROCEDURE AND MANUFACTURES SO OBTAINED |
CN1091062A (en) * | 1993-02-19 | 1994-08-24 | 休麦尔罗米尼斯有限公司 | Device with the sheet metal tubulation |
EP0696486B1 (en) * | 1994-08-10 | 2002-05-22 | Elpatronic Ag | Method and device for bending sheet metal blanks |
DE4432674C1 (en) | 1994-09-14 | 1996-02-22 | Weil Eng Gmbh | Device and method for producing pipes |
KR100657465B1 (en) * | 2004-05-15 | 2006-12-13 | 엘지전자 주식회사 | Drum manufacturing method of washing machine |
US20070095001A1 (en) * | 2005-10-04 | 2007-05-03 | Shape Corporation | Continuous process of roll-forming pre-stamped varying shapes |
KR101246935B1 (en) * | 2006-10-12 | 2013-03-25 | 제이에프이 스틸 가부시키가이샤 | Apparatus for manufacturing seam-welded pipe excelling in welded portion characteristic |
DE102008027807B4 (en) | 2008-06-06 | 2011-05-12 | Eisenbau Krämer mbH | Method for producing a large steel pipe |
JP2011020159A (en) * | 2009-07-17 | 2011-02-03 | Nippon Steel & Sumikin Metal Products Co Ltd | Scraper device for squeeze roll in electric resistance welded tube production equipment |
-
2013
- 2013-07-08 WO PCT/CH2013/000120 patent/WO2015003276A1/en active Application Filing
- 2013-07-08 US US14/903,220 patent/US20160136703A1/en not_active Abandoned
- 2013-07-08 CN CN201380076827.4A patent/CN105555430A/en active Pending
- 2013-07-08 EP EP13737525.9A patent/EP3019287B1/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108480881A (en) * | 2018-03-21 | 2018-09-04 | 鞍钢未来钢铁研究院有限公司 | A kind of cold-rolled steel coils core welding method based on articulated robot |
Also Published As
Publication number | Publication date |
---|---|
CN105555430A (en) | 2016-05-04 |
EP3019287A1 (en) | 2016-05-18 |
US20160136703A1 (en) | 2016-05-19 |
WO2015003276A1 (en) | 2015-01-15 |
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