WO2016071161A1 - Presse plieuse de tube - Google Patents

Presse plieuse de tube Download PDF

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Publication number
WO2016071161A1
WO2016071161A1 PCT/EP2015/074881 EP2015074881W WO2016071161A1 WO 2016071161 A1 WO2016071161 A1 WO 2016071161A1 EP 2015074881 W EP2015074881 W EP 2015074881W WO 2016071161 A1 WO2016071161 A1 WO 2016071161A1
Authority
WO
WIPO (PCT)
Prior art keywords
bending
press
tool
tools
sheet
Prior art date
Application number
PCT/EP2015/074881
Other languages
German (de)
English (en)
Inventor
Frank BLÖMKE
Original Assignee
Siempelkamp Maschinen- Und Anlagenbau Gmbh
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 Siempelkamp Maschinen- Und Anlagenbau Gmbh filed Critical Siempelkamp Maschinen- Und Anlagenbau Gmbh
Publication of WO2016071161A1 publication Critical patent/WO2016071161A1/fr

Links

Classifications

    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes

Definitions

  • the invention relates to a tube bending press for bending sheets in the course of the production of pipes, with a arranged in or on a press upper part bending rate, at the lower end of an upper tool is fixed and arranged with two in or on a press base and from each other (transverse to the direction) spaced sub-tools.
  • Pipe in the context of the invention esp. A longitudinally welded pipe or slot pipe.
  • a tube bending press of the type described above which is also referred to as a step shape press
  • the sheet is bent in several temporally successive steps or bending operations.
  • the production of a pipe and esp. Large tube is also referred to as a step-forming process or progressive molding process.
  • the lower tools are usually designed as extending in the sheet longitudinal direction and consequently tube longitudinal direction moldings.
  • the upper tool arranged on the bending bar dips between the spaced lower tools or moldings, so that the bending force is applied to the metal sheet.
  • DE 18 14 066 discloses a tube bending press of the type described above, in which the two lower tools or moldings are moved against the upper tool during a working stroke together with the aid of a pressure ram.
  • a tube bending press in which the bending rate is lowered and depressed with the attached upper tool during a working stroke, which sets under the action of the bending load value and carried by this upper mold a deformation of the sheet.
  • the upper tool can be articulated hinged to the lower end of the bending load.
  • the bending bar can be articulated at the press end with its upper end. Upper part to be attached, so that a saugelenkige design is achieved. In this way moments in the sword should be avoided during bending.
  • the known tube bending presses have basically proven themselves in practice. However, they are subject to disadvantages and therefore capable of further development.
  • the invention has for its object to provide a tube bending press for bending sheets in the course of the production of pipes of the type described above, with which can be produced in a simple structure in an economical manner pipes with high quality.
  • the invention teaches in a generic tube bending press for bending sheets in the course of the production of tubes of the type described above, that at least one of the lower tools during a working stroke along the working direction against the upper tool and for bending an arranged between press upper part and press base sheet along the working direction relative to the other lower tool is movable.
  • moving does not mean, for example, the method transverse to the working direction in order, for. B. adjust the distance between the two sub-tools, but the method of the lower tools during a working stroke in the working direction.
  • Working direction is the direction in which upper and lower tools are moved towards each other, d. H. usually a vertical or approximately vertical working direction.
  • the invention is based on the problem that raises the sheet in the known bending method of the type described above with at least one end during bending.
  • the sheet metal is transformed step by step into several bending processes beginning on one longitudinal side. Then, the sheet rises with its not yet formed flat area in the known methods usually when the lower tools against the Upper tool are moved.
  • This lifting or lifting affects the bending process and thus the quality of the tubes produced.
  • this is associated with costly measures.
  • the invention has now recognized that the lifting of the sheet in the course of forming can be avoided in a simple manner, if not both lower tools are moved together against the upper tool, but if one of the lower tools during a working stroke against the upper tool and consequently is moved relative to the other lower tool.
  • the invention preferably proposes that lying in this feed direction first lower tool relative to the opposite to the feed direction arranged second lower tool method. For the fact that the process of this second lower tool is dispensed with, the lifting of the sheet is prevented in the not yet bent area.
  • both lower tools are moved, but not simultaneously over the same stroke, but always there is a relative movement between the two sub-tools instead.
  • only one of the two lower tools is moved, while the other lower tool is fixed.
  • the two lower tools can be moved independently of one another against the upper tool, relative to the respective other lower tool. There is then optionally the possibility of alternately successively moving both lower tools relative to the other lower tool.
  • each of the two lower tools is equipped with at least one own press drive and movable, wherein such a press drive z. B. as a hydraulic drive, z. B. be designed as a hydraulic cylinder can.
  • a press drive z. B. as a hydraulic drive
  • z. B. be designed as a hydraulic cylinder can.
  • sheets are formed, which have a certain length to produce tubes of a certain length, for each lower tool a (separate) series of longitudinal direction in sheet metal successively arranged drives, for.
  • cylinders may be provided.
  • the bending bar is rotatably or pivotally articulated in or on the press upper part and provided with at least one rotary drive.
  • the invention is based on the recognition that the loads of the bending rate in the course of forming can be minimized by rotation of the bending rate with the upper tool arranged thereon about an axis of rotation extending along the sheet longitudinal direction. Because when forming by simply a simple method of a lower tool is basically the problem that the bending forces are asymmetrically entered into the sword. This can lead to high loads. These loads are minimized when the sword is rotated or swiveled in a suitable manner prior to the process (or possibly also during the process) of the only one lower tool, specifically to the lower tool which is raised in this case.
  • the pipe bending press is provided with a control device, which with the sub-tools, z. B. the press drives on the one hand and with the bending rate, z. B. the rotary drive on the other hand is connected, wherein the rotational movement of the bending load value in dependence on the working movement of the lower tools or the lower tool is controllable.
  • a control device which with the sub-tools, z. B. the press drives on the one hand and with the bending rate, z. B. the rotary drive on the other hand is connected, wherein the rotational movement of the bending load value in dependence on the working movement of the lower tools or the lower tool is controllable.
  • the upper tool usually has a cross-sectionally circular working surface.
  • the invention also relates to a method for bending sheets in the course of the production of pipes with a tube bending press of the type described. This method is characterized in that for bending the sheet during a working stroke of the lower tools against the upper tool and along the working direction relative to the other lower tool is moved.
  • the sheet is bent in several temporally successive bending operations.
  • the invention proposes here optionally that during a bending process only one of the sub-tools is moved, while the other lower tool is fixed. It is always expedient if the bending rate is rotated prior to the process of one of the lower tools to a rotational axis extending in the sheet longitudinal direction or pipe longitudinal axis, so that the forces are introduced symmetrically in the bending rate in the manner described.
  • the bending rate can be preferably rotated in the direction of this lower tool prior to the process of one of the lower tools.
  • the bending rate is rotated before the working stroke of one of the lower tools in the desired working position and with the proviso that the introduced from the lower tool in the sheet resulting bending force along or substantially along the sword longitudinal direction.
  • the tube bending press according to the invention and with the working method according to the invention can be produced in a simple way slotted tubes with high quality. It can process a wide range of sheet types. In particular, sheets of different materials and sheets of different thickness can be processed.
  • the press can be used variably.
  • both lower tools can be lifted in a conventional manner.
  • work is done with separate press cylinders for each lower tool and consequently with a total of at least two press cylinders or two rows of press cylinders, the double press force can be applied with these two press cylinders or rows.
  • it is expedient to bend the sheets used before the described deformation in the region of the edges. This bending is usually done in a separate press brake, which is not the subject of this invention.
  • a separate press brake which is not the subject of this invention.
  • FIG. 3 shows the article of FIG. 2 in a modified, preferred
  • a tube bending press for bending a sheet 1 during the production of a tube.
  • Such a tube bending press consists in its basic structure of a press upper part 2 and a press lower part 3.
  • On the press upper part 2 is a bending rate 4 angeord- net, at the lower end of an upper tool 5 is attached.
  • On the lower press part 3, two lower tools 6a, 6b are arranged, wherein these lower tools 6a, 6b are spaced apart from one another transversely to the working direction A.
  • Working direction A is the direction along which the tools for bending are moved towards each other, ie in the embodiment the vertical direction.
  • the lower tools 6a, 6b can be moved along the working direction A during a working stroke, namely against the upper tool 5, so that the upper tool 5 can be moved between the spaced lower tools 6a, 6b dips.
  • Fig. 1 shows the operation of such a tube bending press in a conventional manner, namely, when the two lower tools 6a, 6b are moved together against the upper tool 5. It can be seen that in this way the sheet can be formed in the desired manner.
  • the problem is the fact that the sheet with its left in Fig. 1 shown end, which has not yet bent in the desired manner, lifts. This is indicated by the arrow P.
  • each of the two lower tools 6a, 6b is equipped with its own press drive 7a, 7b.
  • These press drives 7a, 7b are only indicated in simplified form in the figures.
  • Fig. 2 it can be seen that by lifting only one of the lower tools, namely the lower tool shown in Fig. 2 lower tool 6b, the lifting of the left end of the sheet can be prevented.
  • the tube bending press according to the invention is characterized, apart from the separately controllable press drives 7a, 7b for the two lower tools 6a, 6b in the embodiment shown in Fig.
  • the bending bar 4 is rotatably articulated to the press upper part 2.
  • the bending bar value 4 is provided with a merely indicated rotary drive 8, with which the bending bar value 4 can be rotated about an axis of rotation D running along the longitudinal direction of the plate.
  • FIGS. 3 to 8 This option is shown in FIGS. 3 to 8.
  • the tube bending method according to the invention can be further optimized. For it is now possible, as shown in FIGS. 3 to 8, to rotate the bending bar 4 in front of a working stroke and consequently prior to lifting one of the lower tools 6b about the axis of rotation D, in the direction of the respectively moved lower tool 6b.
  • the rotational movement of the bending rate value 4 takes place as a function of the subsequent feed movement of the lower tool 6b, with the proviso that the resultant bending force F introduced by the lower tool 6b into the metal sheet 1 extends substantially along the longitudinal direction L.
  • FIG. 3 shows these relationships and makes it clear that in this way an asymmetrical introduction of force into the bending load value 4 is avoided.
  • FIGS. 3 to 8. 3 shows the arrangement before or at the beginning of the forming in the region of the right side of the sheet 1.
  • the edges of the sheet (right and left) were already in one pre-bent and bent, not shown, in a separate bending press.
  • Fig. 5 shows the end of the forming process of the right side of the sheet.
  • FIGS. 6 to 8 the left side of the sheet can be reshaped so that FIG. 8 shows the end of the forming process in the region of the left side. It can be seen that during the forming of the right side of the sheet only the right lower tool 6b is working, whereas during the forming of the left side of the sheet only the left forming tool 6a is working. Also, the bending rate 4 is pivoted in both cases in different directions, namely each added to the working lower tool.
  • the tube bending press according to the invention and with the working method according to the invention can be produced in a simple way slotted tubes with high quality. It can handle a wide range of sheet types. In particular, sheets made of different materials and sheets of different thicknesses can be processed.
  • the press can be used variably. Thus, in particular, the possibility exists of processing thick sheets in a conventional manner in which both lower dies 6a, 6b are simultaneously lifted. Because with thick sheets is a lifting of the Sheet less critical.
  • the double pressing force can be applied by the embodiment according to the invention with two pressing cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

L'invention concerne une presse plieuse de tube, destinée à plier des tôles (1) dans le cadre de la production de tubes, qui comprend une lame de pliage (4) qui est disposée dans ou sur une partie supérieure (2) de la presse et à l'extrémité inférieure de laquelle est fixé un outil supérieur (5), et qui comprend deux outils inférieurs (6a, 6b) disposés dans ou sur une partie inférieure (3) de la presse et espacés l'un de l'autre (perpendiculairement à la direction de travail). Dans cette presse, pour plier une tôle disposée entre la partie supérieure (2) et la partie inférieure (3) de la presse, un ou plusieurs des outils inférieurs (6a, 6b) peuvent être déplacés, lors d'une course de travail, dans la direction de travail (A) contre l'outil supérieur (5) et par rapport à l'autre outil inférieur (6b, 6a).
PCT/EP2015/074881 2014-11-06 2015-10-27 Presse plieuse de tube WO2016071161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014116192.0A DE102014116192A1 (de) 2014-11-06 2014-11-06 Rohrbiegepresse
DE102014116192.0 2014-11-06

Publications (1)

Publication Number Publication Date
WO2016071161A1 true WO2016071161A1 (fr) 2016-05-12

Family

ID=54360451

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/074881 WO2016071161A1 (fr) 2014-11-06 2015-10-27 Presse plieuse de tube

Country Status (2)

Country Link
DE (1) DE102014116192A1 (fr)
WO (1) WO2016071161A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11097326B2 (en) * 2015-06-03 2021-08-24 Sms Group Gmbh Method for producing open-seam pipes from sheet metal panels

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016219706A1 (de) * 2016-10-11 2018-04-12 Sms Group Gmbh Formpresse mit Biegeschwert

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146819A (en) * 1960-10-31 1964-09-01 Waldemar Lindemann Press having automatic bend detector
DE1814066A1 (de) * 1967-12-13 1970-09-10 Ct De Rech S De Pont A Mousson Maschine zum Biegen von Blechen zwecks Herstellung von rohrfoermigen Koerpern und mit einer solchen Maschine ausgeruestete Anlage
DE3123319A1 (de) * 1980-06-19 1982-03-25 Aktiebolaget Carbox, 27100 Ystad Verfahren und einrichtung zum biegen von blechplattenrohlingen zu blechkoerpern zylindrischer form
DE10232098B4 (de) * 2002-07-15 2004-05-06 Sms Meer Gmbh Vorrichtung zum Herstellen von Rohren aus Blechtafeln
DE102011053676A1 (de) * 2011-09-16 2013-03-21 EISENBAU KRäMER GMBH Rohrbiegemaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146819A (en) * 1960-10-31 1964-09-01 Waldemar Lindemann Press having automatic bend detector
DE1814066A1 (de) * 1967-12-13 1970-09-10 Ct De Rech S De Pont A Mousson Maschine zum Biegen von Blechen zwecks Herstellung von rohrfoermigen Koerpern und mit einer solchen Maschine ausgeruestete Anlage
DE3123319A1 (de) * 1980-06-19 1982-03-25 Aktiebolaget Carbox, 27100 Ystad Verfahren und einrichtung zum biegen von blechplattenrohlingen zu blechkoerpern zylindrischer form
DE10232098B4 (de) * 2002-07-15 2004-05-06 Sms Meer Gmbh Vorrichtung zum Herstellen von Rohren aus Blechtafeln
DE102011053676A1 (de) * 2011-09-16 2013-03-21 EISENBAU KRäMER GMBH Rohrbiegemaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11097326B2 (en) * 2015-06-03 2021-08-24 Sms Group Gmbh Method for producing open-seam pipes from sheet metal panels

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DE102014116192A1 (de) 2016-05-12

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